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1/*
2 * H.26L/H.264/AVC/JVT/14496-10/... decoder
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22/**
23 * @file
24 * H.264 / AVC / MPEG4 part10 codec.
25 * @author Michael Niedermayer <michaelni@gmx.at>
26 */
27
28#define UNCHECKED_BITSTREAM_READER 1
29
30#include "libavutil/avassert.h"
31#include "libavutil/imgutils.h"
32#include "libavutil/opt.h"
33#include "internal.h"
34#include "cabac.h"
35#include "cabac_functions.h"
36#include "dsputil.h"
37#include "error_resilience.h"
38#include "avcodec.h"
39#include "mpegvideo.h"
40#include "h264.h"
41#include "h264data.h"
42#include "h264chroma.h"
43#include "h264_mvpred.h"
44#include "golomb.h"
45#include "mathops.h"
46#include "rectangle.h"
47#include "svq3.h"
48#include "thread.h"
49#include "vdpau_internal.h"
50
51#include <assert.h>
52
53static void flush_change(H264Context *h);
54
55const uint16_t ff_h264_mb_sizes[4] = { 256, 384, 512, 768 };
56
57static const uint8_t rem6[QP_MAX_NUM + 1] = {
58 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2,
59 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
60 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2,
61 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5,
62 0, 1, 2, 3,
63};
64
65static const uint8_t div6[QP_MAX_NUM + 1] = {
66 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3,
67 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6,
68 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10,
69 10,10,10,11,11,11,11,11,11,12,12,12,12,12,12,13,13,13, 13, 13, 13,
70 14,14,14,14,
71};
72
73static const uint8_t field_scan[16+1] = {
74 0 + 0 * 4, 0 + 1 * 4, 1 + 0 * 4, 0 + 2 * 4,
75 0 + 3 * 4, 1 + 1 * 4, 1 + 2 * 4, 1 + 3 * 4,
76 2 + 0 * 4, 2 + 1 * 4, 2 + 2 * 4, 2 + 3 * 4,
77 3 + 0 * 4, 3 + 1 * 4, 3 + 2 * 4, 3 + 3 * 4,
78};
79
80static const uint8_t field_scan8x8[64+1] = {
81 0 + 0 * 8, 0 + 1 * 8, 0 + 2 * 8, 1 + 0 * 8,
82 1 + 1 * 8, 0 + 3 * 8, 0 + 4 * 8, 1 + 2 * 8,
83 2 + 0 * 8, 1 + 3 * 8, 0 + 5 * 8, 0 + 6 * 8,
84 0 + 7 * 8, 1 + 4 * 8, 2 + 1 * 8, 3 + 0 * 8,
85 2 + 2 * 8, 1 + 5 * 8, 1 + 6 * 8, 1 + 7 * 8,
86 2 + 3 * 8, 3 + 1 * 8, 4 + 0 * 8, 3 + 2 * 8,
87 2 + 4 * 8, 2 + 5 * 8, 2 + 6 * 8, 2 + 7 * 8,
88 3 + 3 * 8, 4 + 1 * 8, 5 + 0 * 8, 4 + 2 * 8,
89 3 + 4 * 8, 3 + 5 * 8, 3 + 6 * 8, 3 + 7 * 8,
90 4 + 3 * 8, 5 + 1 * 8, 6 + 0 * 8, 5 + 2 * 8,
91 4 + 4 * 8, 4 + 5 * 8, 4 + 6 * 8, 4 + 7 * 8,
92 5 + 3 * 8, 6 + 1 * 8, 6 + 2 * 8, 5 + 4 * 8,
93 5 + 5 * 8, 5 + 6 * 8, 5 + 7 * 8, 6 + 3 * 8,
94 7 + 0 * 8, 7 + 1 * 8, 6 + 4 * 8, 6 + 5 * 8,
95 6 + 6 * 8, 6 + 7 * 8, 7 + 2 * 8, 7 + 3 * 8,
96 7 + 4 * 8, 7 + 5 * 8, 7 + 6 * 8, 7 + 7 * 8,
97};
98
99static const uint8_t field_scan8x8_cavlc[64+1] = {
100 0 + 0 * 8, 1 + 1 * 8, 2 + 0 * 8, 0 + 7 * 8,
101 2 + 2 * 8, 2 + 3 * 8, 2 + 4 * 8, 3 + 3 * 8,
102 3 + 4 * 8, 4 + 3 * 8, 4 + 4 * 8, 5 + 3 * 8,
103 5 + 5 * 8, 7 + 0 * 8, 6 + 6 * 8, 7 + 4 * 8,
104 0 + 1 * 8, 0 + 3 * 8, 1 + 3 * 8, 1 + 4 * 8,
105 1 + 5 * 8, 3 + 1 * 8, 2 + 5 * 8, 4 + 1 * 8,
106 3 + 5 * 8, 5 + 1 * 8, 4 + 5 * 8, 6 + 1 * 8,
107 5 + 6 * 8, 7 + 1 * 8, 6 + 7 * 8, 7 + 5 * 8,
108 0 + 2 * 8, 0 + 4 * 8, 0 + 5 * 8, 2 + 1 * 8,
109 1 + 6 * 8, 4 + 0 * 8, 2 + 6 * 8, 5 + 0 * 8,
110 3 + 6 * 8, 6 + 0 * 8, 4 + 6 * 8, 6 + 2 * 8,
111 5 + 7 * 8, 6 + 4 * 8, 7 + 2 * 8, 7 + 6 * 8,
112 1 + 0 * 8, 1 + 2 * 8, 0 + 6 * 8, 3 + 0 * 8,
113 1 + 7 * 8, 3 + 2 * 8, 2 + 7 * 8, 4 + 2 * 8,
114 3 + 7 * 8, 5 + 2 * 8, 4 + 7 * 8, 5 + 4 * 8,
115 6 + 3 * 8, 6 + 5 * 8, 7 + 3 * 8, 7 + 7 * 8,
116};
117
118// zigzag_scan8x8_cavlc[i] = zigzag_scan8x8[(i/4) + 16*(i%4)]
119static const uint8_t zigzag_scan8x8_cavlc[64+1] = {
120 0 + 0 * 8, 1 + 1 * 8, 1 + 2 * 8, 2 + 2 * 8,
121 4 + 1 * 8, 0 + 5 * 8, 3 + 3 * 8, 7 + 0 * 8,
122 3 + 4 * 8, 1 + 7 * 8, 5 + 3 * 8, 6 + 3 * 8,
123 2 + 7 * 8, 6 + 4 * 8, 5 + 6 * 8, 7 + 5 * 8,
124 1 + 0 * 8, 2 + 0 * 8, 0 + 3 * 8, 3 + 1 * 8,
125 3 + 2 * 8, 0 + 6 * 8, 4 + 2 * 8, 6 + 1 * 8,
126 2 + 5 * 8, 2 + 6 * 8, 6 + 2 * 8, 5 + 4 * 8,
127 3 + 7 * 8, 7 + 3 * 8, 4 + 7 * 8, 7 + 6 * 8,
128 0 + 1 * 8, 3 + 0 * 8, 0 + 4 * 8, 4 + 0 * 8,
129 2 + 3 * 8, 1 + 5 * 8, 5 + 1 * 8, 5 + 2 * 8,
130 1 + 6 * 8, 3 + 5 * 8, 7 + 1 * 8, 4 + 5 * 8,
131 4 + 6 * 8, 7 + 4 * 8, 5 + 7 * 8, 6 + 7 * 8,
132 0 + 2 * 8, 2 + 1 * 8, 1 + 3 * 8, 5 + 0 * 8,
133 1 + 4 * 8, 2 + 4 * 8, 6 + 0 * 8, 4 + 3 * 8,
134 0 + 7 * 8, 4 + 4 * 8, 7 + 2 * 8, 3 + 6 * 8,
135 5 + 5 * 8, 6 + 5 * 8, 6 + 6 * 8, 7 + 7 * 8,
136};
137
138static const uint8_t dequant4_coeff_init[6][3] = {
139 { 10, 13, 16 },
140 { 11, 14, 18 },
141 { 13, 16, 20 },
142 { 14, 18, 23 },
143 { 16, 20, 25 },
144 { 18, 23, 29 },
145};
146
147static const uint8_t dequant8_coeff_init_scan[16] = {
148 0, 3, 4, 3, 3, 1, 5, 1, 4, 5, 2, 5, 3, 1, 5, 1
149};
150
151static const uint8_t dequant8_coeff_init[6][6] = {
152 { 20, 18, 32, 19, 25, 24 },
153 { 22, 19, 35, 21, 28, 26 },
154 { 26, 23, 42, 24, 33, 31 },
155 { 28, 25, 45, 26, 35, 33 },
156 { 32, 28, 51, 30, 40, 38 },
157 { 36, 32, 58, 34, 46, 43 },
158};
159
160static const enum AVPixelFormat h264_hwaccel_pixfmt_list_420[] = {
161#if CONFIG_H264_DXVA2_HWACCEL
162 AV_PIX_FMT_DXVA2_VLD,
163#endif
164#if CONFIG_H264_VAAPI_HWACCEL
165 AV_PIX_FMT_VAAPI_VLD,
166#endif
167#if CONFIG_H264_VDA_HWACCEL
168 AV_PIX_FMT_VDA_VLD,
169#endif
170#if CONFIG_H264_VDPAU_HWACCEL
171 AV_PIX_FMT_VDPAU,
172#endif
173 AV_PIX_FMT_YUV420P,
174 AV_PIX_FMT_NONE
175};
176
177static const enum AVPixelFormat h264_hwaccel_pixfmt_list_jpeg_420[] = {
178#if CONFIG_H264_DXVA2_HWACCEL
179 AV_PIX_FMT_DXVA2_VLD,
180#endif
181#if CONFIG_H264_VAAPI_HWACCEL
182 AV_PIX_FMT_VAAPI_VLD,
183#endif
184#if CONFIG_H264_VDA_HWACCEL
185 AV_PIX_FMT_VDA_VLD,
186#endif
187#if CONFIG_H264_VDPAU_HWACCEL
188 AV_PIX_FMT_VDPAU,
189#endif
190 AV_PIX_FMT_YUVJ420P,
191 AV_PIX_FMT_NONE
192};
193
194int avpriv_h264_has_num_reorder_frames(AVCodecContext *avctx)
195{
196 H264Context *h = avctx->priv_data;
197 return h ? h->sps.num_reorder_frames : 0;
198}
199
200static void h264_er_decode_mb(void *opaque, int ref, int mv_dir, int mv_type,
201 int (*mv)[2][4][2],
202 int mb_x, int mb_y, int mb_intra, int mb_skipped)
203{
204 H264Context *h = opaque;
205
206 h->mb_x = mb_x;
207 h->mb_y = mb_y;
208 h->mb_xy = mb_x + mb_y * h->mb_stride;
209 memset(h->non_zero_count_cache, 0, sizeof(h->non_zero_count_cache));
210 av_assert1(ref >= 0);
211 /* FIXME: It is possible albeit uncommon that slice references
212 * differ between slices. We take the easy approach and ignore
213 * it for now. If this turns out to have any relevance in
214 * practice then correct remapping should be added. */
215 if (ref >= h->ref_count[0])
216 ref = 0;
217 if (!h->ref_list[0][ref].f.data[0]) {
218 av_log(h->avctx, AV_LOG_DEBUG, "Reference not available for error concealing\n");
219 ref = 0;
220 }
221 if ((h->ref_list[0][ref].reference&3) != 3) {
222 av_log(h->avctx, AV_LOG_DEBUG, "Reference invalid\n");
223 return;
224 }
225 fill_rectangle(&h->cur_pic.ref_index[0][4 * h->mb_xy],
226 2, 2, 2, ref, 1);
227 fill_rectangle(&h->ref_cache[0][scan8[0]], 4, 4, 8, ref, 1);
228 fill_rectangle(h->mv_cache[0][scan8[0]], 4, 4, 8,
229 pack16to32((*mv)[0][0][0], (*mv)[0][0][1]), 4);
230 h->mb_mbaff =
231 h->mb_field_decoding_flag = 0;
232 ff_h264_hl_decode_mb(h);
233}
234
235void ff_h264_draw_horiz_band(H264Context *h, int y, int height)
236{
237 AVCodecContext *avctx = h->avctx;
238 Picture *cur = &h->cur_pic;
239 Picture *last = h->ref_list[0][0].f.data[0] ? &h->ref_list[0][0] : NULL;
240 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
241 int vshift = desc->log2_chroma_h;
242 const int field_pic = h->picture_structure != PICT_FRAME;
243 if (field_pic) {
244 height <<= 1;
245 y <<= 1;
246 }
247
248 height = FFMIN(height, avctx->height - y);
249
250 if (field_pic && h->first_field && !(avctx->slice_flags & SLICE_FLAG_ALLOW_FIELD))
251 return;
252
253 if (avctx->draw_horiz_band) {
254 AVFrame *src;
255 int offset[AV_NUM_DATA_POINTERS];
256 int i;
257
258 if (cur->f.pict_type == AV_PICTURE_TYPE_B || h->low_delay ||
259 (avctx->slice_flags & SLICE_FLAG_CODED_ORDER))
260 src = &cur->f;
261 else if (last)
262 src = &last->f;
263 else
264 return;
265
266 offset[0] = y * src->linesize[0];
267 offset[1] =
268 offset[2] = (y >> vshift) * src->linesize[1];
269 for (i = 3; i < AV_NUM_DATA_POINTERS; i++)
270 offset[i] = 0;
271
272 emms_c();
273
274 avctx->draw_horiz_band(avctx, src, offset,
275 y, h->picture_structure, height);
276 }
277}
278
279static void unref_picture(H264Context *h, Picture *pic)
280{
281 int off = offsetof(Picture, tf) + sizeof(pic->tf);
282 int i;
283
284 if (!pic->f.data[0])
285 return;
286
287 ff_thread_release_buffer(h->avctx, &pic->tf);
288 av_buffer_unref(&pic->hwaccel_priv_buf);
289
290 av_buffer_unref(&pic->qscale_table_buf);
291 av_buffer_unref(&pic->mb_type_buf);
292 for (i = 0; i < 2; i++) {
293 av_buffer_unref(&pic->motion_val_buf[i]);
294 av_buffer_unref(&pic->ref_index_buf[i]);
295 }
296
297 memset((uint8_t*)pic + off, 0, sizeof(*pic) - off);
298}
299
300static void release_unused_pictures(H264Context *h, int remove_current)
301{
302 int i;
303
304 /* release non reference frames */
305 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
306 if (h->DPB[i].f.data[0] && !h->DPB[i].reference &&
307 (remove_current || &h->DPB[i] != h->cur_pic_ptr)) {
308 unref_picture(h, &h->DPB[i]);
309 }
310 }
311}
312
313static int ref_picture(H264Context *h, Picture *dst, Picture *src)
314{
315 int ret, i;
316
317 av_assert0(!dst->f.buf[0]);
318 av_assert0(src->f.buf[0]);
319
320 src->tf.f = &src->f;
321 dst->tf.f = &dst->f;
322 ret = ff_thread_ref_frame(&dst->tf, &src->tf);
323 if (ret < 0)
324 goto fail;
325
326 dst->qscale_table_buf = av_buffer_ref(src->qscale_table_buf);
327 dst->mb_type_buf = av_buffer_ref(src->mb_type_buf);
328 if (!dst->qscale_table_buf || !dst->mb_type_buf)
329 goto fail;
330 dst->qscale_table = src->qscale_table;
331 dst->mb_type = src->mb_type;
332
333 for (i = 0; i < 2; i++) {
334 dst->motion_val_buf[i] = av_buffer_ref(src->motion_val_buf[i]);
335 dst->ref_index_buf[i] = av_buffer_ref(src->ref_index_buf[i]);
336 if (!dst->motion_val_buf[i] || !dst->ref_index_buf[i])
337 goto fail;
338 dst->motion_val[i] = src->motion_val[i];
339 dst->ref_index[i] = src->ref_index[i];
340 }
341
342 if (src->hwaccel_picture_private) {
343 dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf);
344 if (!dst->hwaccel_priv_buf)
345 goto fail;
346 dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data;
347 }
348
349 for (i = 0; i < 2; i++)
350 dst->field_poc[i] = src->field_poc[i];
351
352 memcpy(dst->ref_poc, src->ref_poc, sizeof(src->ref_poc));
353 memcpy(dst->ref_count, src->ref_count, sizeof(src->ref_count));
354
355 dst->poc = src->poc;
356 dst->frame_num = src->frame_num;
357 dst->mmco_reset = src->mmco_reset;
358 dst->pic_id = src->pic_id;
359 dst->long_ref = src->long_ref;
360 dst->mbaff = src->mbaff;
361 dst->field_picture = src->field_picture;
362 dst->needs_realloc = src->needs_realloc;
363 dst->reference = src->reference;
364 dst->sync = src->sync;
365 dst->crop = src->crop;
366 dst->crop_left = src->crop_left;
367 dst->crop_top = src->crop_top;
368
369 return 0;
370fail:
371 unref_picture(h, dst);
372 return ret;
373}
374
375static int alloc_scratch_buffers(H264Context *h, int linesize)
376{
377 int alloc_size = FFALIGN(FFABS(linesize) + 32, 32);
378
379 if (h->bipred_scratchpad)
380 return 0;
381
382 h->bipred_scratchpad = av_malloc(16 * 6 * alloc_size);
383 // edge emu needs blocksize + filter length - 1
384 // (= 21x21 for h264)
385 h->edge_emu_buffer = av_mallocz(alloc_size * 2 * 21);
386 h->me.scratchpad = av_mallocz(alloc_size * 2 * 16 * 2);
387
388 if (!h->bipred_scratchpad || !h->edge_emu_buffer || !h->me.scratchpad) {
389 av_freep(&h->bipred_scratchpad);
390 av_freep(&h->edge_emu_buffer);
391 av_freep(&h->me.scratchpad);
392 return AVERROR(ENOMEM);
393 }
394
395 h->me.temp = h->me.scratchpad;
396
397 return 0;
398}
399
400static int init_table_pools(H264Context *h)
401{
402 const int big_mb_num = h->mb_stride * (h->mb_height + 1) + 1;
403 const int mb_array_size = h->mb_stride * h->mb_height;
404 const int b4_stride = h->mb_width * 4 + 1;
405 const int b4_array_size = b4_stride * h->mb_height * 4;
406
407 h->qscale_table_pool = av_buffer_pool_init(big_mb_num + h->mb_stride,
408 av_buffer_allocz);
409 h->mb_type_pool = av_buffer_pool_init((big_mb_num + h->mb_stride) *
410 sizeof(uint32_t), av_buffer_allocz);
411 h->motion_val_pool = av_buffer_pool_init(2 * (b4_array_size + 4) *
412 sizeof(int16_t), av_buffer_allocz);
413 h->ref_index_pool = av_buffer_pool_init(4 * mb_array_size, av_buffer_allocz);
414
415 if (!h->qscale_table_pool || !h->mb_type_pool || !h->motion_val_pool ||
416 !h->ref_index_pool) {
417 av_buffer_pool_uninit(&h->qscale_table_pool);
418 av_buffer_pool_uninit(&h->mb_type_pool);
419 av_buffer_pool_uninit(&h->motion_val_pool);
420 av_buffer_pool_uninit(&h->ref_index_pool);
421 return AVERROR(ENOMEM);
422 }
423
424 return 0;
425}
426
427static int alloc_picture(H264Context *h, Picture *pic)
428{
429 int i, ret = 0;
430
431 av_assert0(!pic->f.data[0]);
432
433 pic->tf.f = &pic->f;
434 ret = ff_thread_get_buffer(h->avctx, &pic->tf, pic->reference ?
435 AV_GET_BUFFER_FLAG_REF : 0);
436 if (ret < 0)
437 goto fail;
438
439 h->linesize = pic->f.linesize[0];
440 h->uvlinesize = pic->f.linesize[1];
441 pic->crop = h->sps.crop;
442 pic->crop_top = h->sps.crop_top;
443 pic->crop_left= h->sps.crop_left;
444
445 if (h->avctx->hwaccel) {
446 const AVHWAccel *hwaccel = h->avctx->hwaccel;
447 av_assert0(!pic->hwaccel_picture_private);
448 if (hwaccel->priv_data_size) {
449 pic->hwaccel_priv_buf = av_buffer_allocz(hwaccel->priv_data_size);
450 if (!pic->hwaccel_priv_buf)
451 return AVERROR(ENOMEM);
452 pic->hwaccel_picture_private = pic->hwaccel_priv_buf->data;
453 }
454 }
455
456 if (!h->qscale_table_pool) {
457 ret = init_table_pools(h);
458 if (ret < 0)
459 goto fail;
460 }
461
462 pic->qscale_table_buf = av_buffer_pool_get(h->qscale_table_pool);
463 pic->mb_type_buf = av_buffer_pool_get(h->mb_type_pool);
464 if (!pic->qscale_table_buf || !pic->mb_type_buf)
465 goto fail;
466
467 pic->mb_type = (uint32_t*)pic->mb_type_buf->data + 2 * h->mb_stride + 1;
468 pic->qscale_table = pic->qscale_table_buf->data + 2 * h->mb_stride + 1;
469
470 for (i = 0; i < 2; i++) {
471 pic->motion_val_buf[i] = av_buffer_pool_get(h->motion_val_pool);
472 pic->ref_index_buf[i] = av_buffer_pool_get(h->ref_index_pool);
473 if (!pic->motion_val_buf[i] || !pic->ref_index_buf[i])
474 goto fail;
475
476 pic->motion_val[i] = (int16_t (*)[2])pic->motion_val_buf[i]->data + 4;
477 pic->ref_index[i] = pic->ref_index_buf[i]->data;
478 }
479
480 return 0;
481fail:
482 unref_picture(h, pic);
483 return (ret < 0) ? ret : AVERROR(ENOMEM);
484}
485
486static inline int pic_is_unused(H264Context *h, Picture *pic)
487{
488 if (pic->f.data[0] == NULL)
489 return 1;
490 if (pic->needs_realloc && !(pic->reference & DELAYED_PIC_REF))
491 return 1;
492 return 0;
493}
494
495static int find_unused_picture(H264Context *h)
496{
497 int i;
498
499 for (i = 0; i < MAX_PICTURE_COUNT; i++) {
500 if (pic_is_unused(h, &h->DPB[i]))
501 break;
502 }
503 if (i == MAX_PICTURE_COUNT)
504 return AVERROR_INVALIDDATA;
505
506 if (h->DPB[i].needs_realloc) {
507 h->DPB[i].needs_realloc = 0;
508 unref_picture(h, &h->DPB[i]);
509 }
510
511 return i;
512}
513
514/**
515 * Check if the top & left blocks are available if needed and
516 * change the dc mode so it only uses the available blocks.
517 */
518int ff_h264_check_intra4x4_pred_mode(H264Context *h)
519{
520 static const int8_t top[12] = {
521 -1, 0, LEFT_DC_PRED, -1, -1, -1, -1, -1, 0
522 };
523 static const int8_t left[12] = {
524 0, -1, TOP_DC_PRED, 0, -1, -1, -1, 0, -1, DC_128_PRED
525 };
526 int i;
527
528 if (!(h->top_samples_available & 0x8000)) {
529 for (i = 0; i < 4; i++) {
530 int status = top[h->intra4x4_pred_mode_cache[scan8[0] + i]];
531 if (status < 0) {
532 av_log(h->avctx, AV_LOG_ERROR,
533 "top block unavailable for requested intra4x4 mode %d at %d %d\n",
534 status, h->mb_x, h->mb_y);
535 return AVERROR_INVALIDDATA;
536 } else if (status) {
537 h->intra4x4_pred_mode_cache[scan8[0] + i] = status;
538 }
539 }
540 }
541
542 if ((h->left_samples_available & 0x8888) != 0x8888) {
543 static const int mask[4] = { 0x8000, 0x2000, 0x80, 0x20 };
544 for (i = 0; i < 4; i++)
545 if (!(h->left_samples_available & mask[i])) {
546 int status = left[h->intra4x4_pred_mode_cache[scan8[0] + 8 * i]];
547 if (status < 0) {
548 av_log(h->avctx, AV_LOG_ERROR,
549 "left block unavailable for requested intra4x4 mode %d at %d %d\n",
550 status, h->mb_x, h->mb_y);
551 return AVERROR_INVALIDDATA;
552 } else if (status) {
553 h->intra4x4_pred_mode_cache[scan8[0] + 8 * i] = status;
554 }
555 }
556 }
557
558 return 0;
559} // FIXME cleanup like ff_h264_check_intra_pred_mode
560
561/**
562 * Check if the top & left blocks are available if needed and
563 * change the dc mode so it only uses the available blocks.
564 */
565int ff_h264_check_intra_pred_mode(H264Context *h, int mode, int is_chroma)
566{
567 static const int8_t top[4] = { LEFT_DC_PRED8x8, 1, -1, -1 };
568 static const int8_t left[5] = { TOP_DC_PRED8x8, -1, 2, -1, DC_128_PRED8x8 };
569
570 if (mode > 3U) {
571 av_log(h->avctx, AV_LOG_ERROR,
572 "out of range intra chroma pred mode at %d %d\n",
573 h->mb_x, h->mb_y);
574 return AVERROR_INVALIDDATA;
575 }
576
577 if (!(h->top_samples_available & 0x8000)) {
578 mode = top[mode];
579 if (mode < 0) {
580 av_log(h->avctx, AV_LOG_ERROR,
581 "top block unavailable for requested intra mode at %d %d\n",
582 h->mb_x, h->mb_y);
583 return AVERROR_INVALIDDATA;
584 }
585 }
586
587 if ((h->left_samples_available & 0x8080) != 0x8080) {
588 mode = left[mode];
589 if (is_chroma && (h->left_samples_available & 0x8080)) {
590 // mad cow disease mode, aka MBAFF + constrained_intra_pred
591 mode = ALZHEIMER_DC_L0T_PRED8x8 +
592 (!(h->left_samples_available & 0x8000)) +
593 2 * (mode == DC_128_PRED8x8);
594 }
595 if (mode < 0) {
596 av_log(h->avctx, AV_LOG_ERROR,
597 "left block unavailable for requested intra mode at %d %d\n",
598 h->mb_x, h->mb_y);
599 return AVERROR_INVALIDDATA;
600 }
601 }
602
603 return mode;
604}
605
606const uint8_t *ff_h264_decode_nal(H264Context *h, const uint8_t *src,
607 int *dst_length, int *consumed, int length)
608{
609 int i, si, di;
610 uint8_t *dst;
611 int bufidx;
612
613 // src[0]&0x80; // forbidden bit
614 h->nal_ref_idc = src[0] >> 5;
615 h->nal_unit_type = src[0] & 0x1F;
616
617 src++;
618 length--;
619
620#define STARTCODE_TEST \
621 if (i + 2 < length && src[i + 1] == 0 && src[i + 2] <= 3) { \
622 if (src[i + 2] != 3) { \
623 /* startcode, so we must be past the end */ \
624 length = i; \
625 } \
626 break; \
627 }
628
629#if HAVE_FAST_UNALIGNED
630#define FIND_FIRST_ZERO \
631 if (i > 0 && !src[i]) \
632 i--; \
633 while (src[i]) \
634 i++
635
636#if HAVE_FAST_64BIT
637 for (i = 0; i + 1 < length; i += 9) {
638 if (!((~AV_RN64A(src + i) &
639 (AV_RN64A(src + i) - 0x0100010001000101ULL)) &
640 0x8000800080008080ULL))
641 continue;
642 FIND_FIRST_ZERO;
643 STARTCODE_TEST;
644 i -= 7;
645 }
646#else
647 for (i = 0; i + 1 < length; i += 5) {
648 if (!((~AV_RN32A(src + i) &
649 (AV_RN32A(src + i) - 0x01000101U)) &
650 0x80008080U))
651 continue;
652 FIND_FIRST_ZERO;
653 STARTCODE_TEST;
654 i -= 3;
655 }
656#endif
657#else
658 for (i = 0; i + 1 < length; i += 2) {
659 if (src[i])
660 continue;
661 if (i > 0 && src[i - 1] == 0)
662 i--;
663 STARTCODE_TEST;
664 }
665#endif
666
667 // use second escape buffer for inter data
668 bufidx = h->nal_unit_type == NAL_DPC ? 1 : 0;
669
670 si = h->rbsp_buffer_size[bufidx];
671 av_fast_padded_malloc(&h->rbsp_buffer[bufidx], &h->rbsp_buffer_size[bufidx], length+MAX_MBPAIR_SIZE);
672 dst = h->rbsp_buffer[bufidx];
673
674 if (dst == NULL)
675 return NULL;
676
677 if(i>=length-1){ //no escaped 0
678 *dst_length= length;
679 *consumed= length+1; //+1 for the header
680 if(h->avctx->flags2 & CODEC_FLAG2_FAST){
681 return src;
682 }else{
683 memcpy(dst, src, length);
684 return dst;
685 }
686 }
687
688 memcpy(dst, src, i);
689 si = di = i;
690 while (si + 2 < length) {
691 // remove escapes (very rare 1:2^22)
692 if (src[si + 2] > 3) {
693 dst[di++] = src[si++];
694 dst[di++] = src[si++];
695 } else if (src[si] == 0 && src[si + 1] == 0) {
696 if (src[si + 2] == 3) { // escape
697 dst[di++] = 0;
698 dst[di++] = 0;
699 si += 3;
700 continue;
701 } else // next start code
702 goto nsc;
703 }
704
705 dst[di++] = src[si++];
706 }
707 while (si < length)
708 dst[di++] = src[si++];
709
710nsc:
711 memset(dst + di, 0, FF_INPUT_BUFFER_PADDING_SIZE);
712
713 *dst_length = di;
714 *consumed = si + 1; // +1 for the header
715 /* FIXME store exact number of bits in the getbitcontext
716 * (it is needed for decoding) */
717 return dst;
718}
719
720/**
721 * Identify the exact end of the bitstream
722 * @return the length of the trailing, or 0 if damaged
723 */
724static int decode_rbsp_trailing(H264Context *h, const uint8_t *src)
725{
726 int v = *src;
727 int r;
728
729 tprintf(h->avctx, "rbsp trailing %X\n", v);
730
731 for (r = 1; r < 9; r++) {
732 if (v & 1)
733 return r;
734 v >>= 1;
735 }
736 return 0;
737}
738
739static inline int get_lowest_part_list_y(H264Context *h, Picture *pic, int n,
740 int height, int y_offset, int list)
741{
742 int raw_my = h->mv_cache[list][scan8[n]][1];
743 int filter_height_down = (raw_my & 3) ? 3 : 0;
744 int full_my = (raw_my >> 2) + y_offset;
745 int bottom = full_my + filter_height_down + height;
746
747 av_assert2(height >= 0);
748
749 return FFMAX(0, bottom);
750}
751
752static inline void get_lowest_part_y(H264Context *h, int refs[2][48], int n,
753 int height, int y_offset, int list0,
754 int list1, int *nrefs)
755{
756 int my;
757
758 y_offset += 16 * (h->mb_y >> MB_FIELD(h));
759
760 if (list0) {
761 int ref_n = h->ref_cache[0][scan8[n]];
762 Picture *ref = &h->ref_list[0][ref_n];
763
764 // Error resilience puts the current picture in the ref list.
765 // Don't try to wait on these as it will cause a deadlock.
766 // Fields can wait on each other, though.
767 if (ref->tf.progress->data != h->cur_pic.tf.progress->data ||
768 (ref->reference & 3) != h->picture_structure) {
769 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 0);
770 if (refs[0][ref_n] < 0)
771 nrefs[0] += 1;
772 refs[0][ref_n] = FFMAX(refs[0][ref_n], my);
773 }
774 }
775
776 if (list1) {
777 int ref_n = h->ref_cache[1][scan8[n]];
778 Picture *ref = &h->ref_list[1][ref_n];
779
780 if (ref->tf.progress->data != h->cur_pic.tf.progress->data ||
781 (ref->reference & 3) != h->picture_structure) {
782 my = get_lowest_part_list_y(h, ref, n, height, y_offset, 1);
783 if (refs[1][ref_n] < 0)
784 nrefs[1] += 1;
785 refs[1][ref_n] = FFMAX(refs[1][ref_n], my);
786 }
787 }
788}
789
790/**
791 * Wait until all reference frames are available for MC operations.
792 *
793 * @param h the H264 context
794 */
795static void await_references(H264Context *h)
796{
797 const int mb_xy = h->mb_xy;
798 const int mb_type = h->cur_pic.mb_type[mb_xy];
799 int refs[2][48];
800 int nrefs[2] = { 0 };
801 int ref, list;
802
803 memset(refs, -1, sizeof(refs));
804
805 if (IS_16X16(mb_type)) {
806 get_lowest_part_y(h, refs, 0, 16, 0,
807 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
808 } else if (IS_16X8(mb_type)) {
809 get_lowest_part_y(h, refs, 0, 8, 0,
810 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
811 get_lowest_part_y(h, refs, 8, 8, 8,
812 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
813 } else if (IS_8X16(mb_type)) {
814 get_lowest_part_y(h, refs, 0, 16, 0,
815 IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
816 get_lowest_part_y(h, refs, 4, 16, 0,
817 IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
818 } else {
819 int i;
820
821 av_assert2(IS_8X8(mb_type));
822
823 for (i = 0; i < 4; i++) {
824 const int sub_mb_type = h->sub_mb_type[i];
825 const int n = 4 * i;
826 int y_offset = (i & 2) << 2;
827
828 if (IS_SUB_8X8(sub_mb_type)) {
829 get_lowest_part_y(h, refs, n, 8, y_offset,
830 IS_DIR(sub_mb_type, 0, 0),
831 IS_DIR(sub_mb_type, 0, 1),
832 nrefs);
833 } else if (IS_SUB_8X4(sub_mb_type)) {
834 get_lowest_part_y(h, refs, n, 4, y_offset,
835 IS_DIR(sub_mb_type, 0, 0),
836 IS_DIR(sub_mb_type, 0, 1),
837 nrefs);
838 get_lowest_part_y(h, refs, n + 2, 4, y_offset + 4,
839 IS_DIR(sub_mb_type, 0, 0),
840 IS_DIR(sub_mb_type, 0, 1),
841 nrefs);
842 } else if (IS_SUB_4X8(sub_mb_type)) {
843 get_lowest_part_y(h, refs, n, 8, y_offset,
844 IS_DIR(sub_mb_type, 0, 0),
845 IS_DIR(sub_mb_type, 0, 1),
846 nrefs);
847 get_lowest_part_y(h, refs, n + 1, 8, y_offset,
848 IS_DIR(sub_mb_type, 0, 0),
849 IS_DIR(sub_mb_type, 0, 1),
850 nrefs);
851 } else {
852 int j;
853 av_assert2(IS_SUB_4X4(sub_mb_type));
854 for (j = 0; j < 4; j++) {
855 int sub_y_offset = y_offset + 2 * (j & 2);
856 get_lowest_part_y(h, refs, n + j, 4, sub_y_offset,
857 IS_DIR(sub_mb_type, 0, 0),
858 IS_DIR(sub_mb_type, 0, 1),
859 nrefs);
860 }
861 }
862 }
863 }
864
865 for (list = h->list_count - 1; list >= 0; list--)
866 for (ref = 0; ref < 48 && nrefs[list]; ref++) {
867 int row = refs[list][ref];
868 if (row >= 0) {
869 Picture *ref_pic = &h->ref_list[list][ref];
870 int ref_field = ref_pic->reference - 1;
871 int ref_field_picture = ref_pic->field_picture;
872 int pic_height = 16 * h->mb_height >> ref_field_picture;
873
874 row <<= MB_MBAFF(h);
875 nrefs[list]--;
876
877 if (!FIELD_PICTURE(h) && ref_field_picture) { // frame referencing two fields
878 ff_thread_await_progress(&ref_pic->tf,
879 FFMIN((row >> 1) - !(row & 1),
880 pic_height - 1),
881 1);
882 ff_thread_await_progress(&ref_pic->tf,
883 FFMIN((row >> 1), pic_height - 1),
884 0);
885 } else if (FIELD_PICTURE(h) && !ref_field_picture) { // field referencing one field of a frame
886 ff_thread_await_progress(&ref_pic->tf,
887 FFMIN(row * 2 + ref_field,
888 pic_height - 1),
889 0);
890 } else if (FIELD_PICTURE(h)) {
891 ff_thread_await_progress(&ref_pic->tf,
892 FFMIN(row, pic_height - 1),
893 ref_field);
894 } else {
895 ff_thread_await_progress(&ref_pic->tf,
896 FFMIN(row, pic_height - 1),
897 0);
898 }
899 }
900 }
901}
902
903static av_always_inline void mc_dir_part(H264Context *h, Picture *pic,
904 int n, int square, int height,
905 int delta, int list,
906 uint8_t *dest_y, uint8_t *dest_cb,
907 uint8_t *dest_cr,
908 int src_x_offset, int src_y_offset,
909 qpel_mc_func *qpix_op,
910 h264_chroma_mc_func chroma_op,
911 int pixel_shift, int chroma_idc)
912{
913 const int mx = h->mv_cache[list][scan8[n]][0] + src_x_offset * 8;
914 int my = h->mv_cache[list][scan8[n]][1] + src_y_offset * 8;
915 const int luma_xy = (mx & 3) + ((my & 3) << 2);
916 ptrdiff_t offset = ((mx >> 2) << pixel_shift) + (my >> 2) * h->mb_linesize;
917 uint8_t *src_y = pic->f.data[0] + offset;
918 uint8_t *src_cb, *src_cr;
919 int extra_width = 0;
920 int extra_height = 0;
921 int emu = 0;
922 const int full_mx = mx >> 2;
923 const int full_my = my >> 2;
924 const int pic_width = 16 * h->mb_width;
925 const int pic_height = 16 * h->mb_height >> MB_FIELD(h);
926 int ysh;
927
928 if (mx & 7)
929 extra_width -= 3;
930 if (my & 7)
931 extra_height -= 3;
932
933 if (full_mx < 0 - extra_width ||
934 full_my < 0 - extra_height ||
935 full_mx + 16 /*FIXME*/ > pic_width + extra_width ||
936 full_my + 16 /*FIXME*/ > pic_height + extra_height) {
937 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, h->mb_linesize,
938 src_y - (2 << pixel_shift) - 2 * h->mb_linesize,
939 h->mb_linesize,
940 16 + 5, 16 + 5 /*FIXME*/, full_mx - 2,
941 full_my - 2, pic_width, pic_height);
942 src_y = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
943 emu = 1;
944 }
945
946 qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); // FIXME try variable height perhaps?
947 if (!square)
948 qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);
949
950 if (CONFIG_GRAY && h->flags & CODEC_FLAG_GRAY)
951 return;
952
953 if (chroma_idc == 3 /* yuv444 */) {
954 src_cb = pic->f.data[1] + offset;
955 if (emu) {
956 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, h->mb_linesize,
957 src_cb - (2 << pixel_shift) - 2 * h->mb_linesize,
958 h->mb_linesize,
959 16 + 5, 16 + 5 /*FIXME*/,
960 full_mx - 2, full_my - 2,
961 pic_width, pic_height);
962 src_cb = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
963 }
964 qpix_op[luma_xy](dest_cb, src_cb, h->mb_linesize); // FIXME try variable height perhaps?
965 if (!square)
966 qpix_op[luma_xy](dest_cb + delta, src_cb + delta, h->mb_linesize);
967
968 src_cr = pic->f.data[2] + offset;
969 if (emu) {
970 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, h->mb_linesize,
971 src_cr - (2 << pixel_shift) - 2 * h->mb_linesize,
972 h->mb_linesize,
973 16 + 5, 16 + 5 /*FIXME*/,
974 full_mx - 2, full_my - 2,
975 pic_width, pic_height);
976 src_cr = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;
977 }
978 qpix_op[luma_xy](dest_cr, src_cr, h->mb_linesize); // FIXME try variable height perhaps?
979 if (!square)
980 qpix_op[luma_xy](dest_cr + delta, src_cr + delta, h->mb_linesize);
981 return;
982 }
983
984 ysh = 3 - (chroma_idc == 2 /* yuv422 */);
985 if (chroma_idc == 1 /* yuv420 */ && MB_FIELD(h)) {
986 // chroma offset when predicting from a field of opposite parity
987 my += 2 * ((h->mb_y & 1) - (pic->reference - 1));
988 emu |= (my >> 3) < 0 || (my >> 3) + 8 >= (pic_height >> 1);
989 }
990
991 src_cb = pic->f.data[1] + ((mx >> 3) << pixel_shift) +
992 (my >> ysh) * h->mb_uvlinesize;
993 src_cr = pic->f.data[2] + ((mx >> 3) << pixel_shift) +
994 (my >> ysh) * h->mb_uvlinesize;
995
996 if (emu) {
997 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, h->mb_uvlinesize, src_cb, h->mb_uvlinesize,
998 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
999 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
1000 src_cb = h->edge_emu_buffer;
1001 }
1002 chroma_op(dest_cb, src_cb, h->mb_uvlinesize,
1003 height >> (chroma_idc == 1 /* yuv420 */),
1004 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
1005
1006 if (emu) {
1007 h->vdsp.emulated_edge_mc(h->edge_emu_buffer, h->mb_uvlinesize, src_cr, h->mb_uvlinesize,
1008 9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
1009 pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
1010 src_cr = h->edge_emu_buffer;
1011 }
1012 chroma_op(dest_cr, src_cr, h->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */),
1013 mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
1014}
1015
1016static av_always_inline void mc_part_std(H264Context *h, int n, int square,
1017 int height, int delta,
1018 uint8_t *dest_y, uint8_t *dest_cb,
1019 uint8_t *dest_cr,
1020 int x_offset, int y_offset,
1021 qpel_mc_func *qpix_put,
1022 h264_chroma_mc_func chroma_put,
1023 qpel_mc_func *qpix_avg,
1024 h264_chroma_mc_func chroma_avg,
1025 int list0, int list1,
1026 int pixel_shift, int chroma_idc)
1027{
1028 qpel_mc_func *qpix_op = qpix_put;
1029 h264_chroma_mc_func chroma_op = chroma_put;
1030
1031 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
1032 if (chroma_idc == 3 /* yuv444 */) {
1033 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
1034 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
1035 } else if (chroma_idc == 2 /* yuv422 */) {
1036 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
1037 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
1038 } else { /* yuv420 */
1039 dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
1040 dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
1041 }
1042 x_offset += 8 * h->mb_x;
1043 y_offset += 8 * (h->mb_y >> MB_FIELD(h));
1044
1045 if (list0) {
1046 Picture *ref = &h->ref_list[0][h->ref_cache[0][scan8[n]]];
1047 mc_dir_part(h, ref, n, square, height, delta, 0,
1048 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1049 qpix_op, chroma_op, pixel_shift, chroma_idc);
1050
1051 qpix_op = qpix_avg;
1052 chroma_op = chroma_avg;
1053 }
1054
1055 if (list1) {
1056 Picture *ref = &h->ref_list[1][h->ref_cache[1][scan8[n]]];
1057 mc_dir_part(h, ref, n, square, height, delta, 1,
1058 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1059 qpix_op, chroma_op, pixel_shift, chroma_idc);
1060 }
1061}
1062
1063static av_always_inline void mc_part_weighted(H264Context *h, int n, int square,
1064 int height, int delta,
1065 uint8_t *dest_y, uint8_t *dest_cb,
1066 uint8_t *dest_cr,
1067 int x_offset, int y_offset,
1068 qpel_mc_func *qpix_put,
1069 h264_chroma_mc_func chroma_put,
1070 h264_weight_func luma_weight_op,
1071 h264_weight_func chroma_weight_op,
1072 h264_biweight_func luma_weight_avg,
1073 h264_biweight_func chroma_weight_avg,
1074 int list0, int list1,
1075 int pixel_shift, int chroma_idc)
1076{
1077 int chroma_height;
1078
1079 dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
1080 if (chroma_idc == 3 /* yuv444 */) {
1081 chroma_height = height;
1082 chroma_weight_avg = luma_weight_avg;
1083 chroma_weight_op = luma_weight_op;
1084 dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
1085 dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;
1086 } else if (chroma_idc == 2 /* yuv422 */) {
1087 chroma_height = height;
1088 dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
1089 dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;
1090 } else { /* yuv420 */
1091 chroma_height = height >> 1;
1092 dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
1093 dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;
1094 }
1095 x_offset += 8 * h->mb_x;
1096 y_offset += 8 * (h->mb_y >> MB_FIELD(h));
1097
1098 if (list0 && list1) {
1099 /* don't optimize for luma-only case, since B-frames usually
1100 * use implicit weights => chroma too. */
1101 uint8_t *tmp_cb = h->bipred_scratchpad;
1102 uint8_t *tmp_cr = h->bipred_scratchpad + (16 << pixel_shift);
1103 uint8_t *tmp_y = h->bipred_scratchpad + 16 * h->mb_uvlinesize;
1104 int refn0 = h->ref_cache[0][scan8[n]];
1105 int refn1 = h->ref_cache[1][scan8[n]];
1106
1107 mc_dir_part(h, &h->ref_list[0][refn0], n, square, height, delta, 0,
1108 dest_y, dest_cb, dest_cr,
1109 x_offset, y_offset, qpix_put, chroma_put,
1110 pixel_shift, chroma_idc);
1111 mc_dir_part(h, &h->ref_list[1][refn1], n, square, height, delta, 1,
1112 tmp_y, tmp_cb, tmp_cr,
1113 x_offset, y_offset, qpix_put, chroma_put,
1114 pixel_shift, chroma_idc);
1115
1116 if (h->use_weight == 2) {
1117 int weight0 = h->implicit_weight[refn0][refn1][h->mb_y & 1];
1118 int weight1 = 64 - weight0;
1119 luma_weight_avg(dest_y, tmp_y, h->mb_linesize,
1120 height, 5, weight0, weight1, 0);
1121 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize,
1122 chroma_height, 5, weight0, weight1, 0);
1123 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize,
1124 chroma_height, 5, weight0, weight1, 0);
1125 } else {
1126 luma_weight_avg(dest_y, tmp_y, h->mb_linesize, height,
1127 h->luma_log2_weight_denom,
1128 h->luma_weight[refn0][0][0],
1129 h->luma_weight[refn1][1][0],
1130 h->luma_weight[refn0][0][1] +
1131 h->luma_weight[refn1][1][1]);
1132 chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, chroma_height,
1133 h->chroma_log2_weight_denom,
1134 h->chroma_weight[refn0][0][0][0],
1135 h->chroma_weight[refn1][1][0][0],
1136 h->chroma_weight[refn0][0][0][1] +
1137 h->chroma_weight[refn1][1][0][1]);
1138 chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, chroma_height,
1139 h->chroma_log2_weight_denom,
1140 h->chroma_weight[refn0][0][1][0],
1141 h->chroma_weight[refn1][1][1][0],
1142 h->chroma_weight[refn0][0][1][1] +
1143 h->chroma_weight[refn1][1][1][1]);
1144 }
1145 } else {
1146 int list = list1 ? 1 : 0;
1147 int refn = h->ref_cache[list][scan8[n]];
1148 Picture *ref = &h->ref_list[list][refn];
1149 mc_dir_part(h, ref, n, square, height, delta, list,
1150 dest_y, dest_cb, dest_cr, x_offset, y_offset,
1151 qpix_put, chroma_put, pixel_shift, chroma_idc);
1152
1153 luma_weight_op(dest_y, h->mb_linesize, height,
1154 h->luma_log2_weight_denom,
1155 h->luma_weight[refn][list][0],
1156 h->luma_weight[refn][list][1]);
1157 if (h->use_weight_chroma) {
1158 chroma_weight_op(dest_cb, h->mb_uvlinesize, chroma_height,
1159 h->chroma_log2_weight_denom,
1160 h->chroma_weight[refn][list][0][0],
1161 h->chroma_weight[refn][list][0][1]);
1162 chroma_weight_op(dest_cr, h->mb_uvlinesize, chroma_height,
1163 h->chroma_log2_weight_denom,
1164 h->chroma_weight[refn][list][1][0],
1165 h->chroma_weight[refn][list][1][1]);
1166 }
1167 }
1168}
1169
1170static av_always_inline void prefetch_motion(H264Context *h, int list,
1171 int pixel_shift, int chroma_idc)
1172{
1173 /* fetch pixels for estimated mv 4 macroblocks ahead
1174 * optimized for 64byte cache lines */
1175 const int refn = h->ref_cache[list][scan8[0]];
1176 if (refn >= 0) {
1177 const int mx = (h->mv_cache[list][scan8[0]][0] >> 2) + 16 * h->mb_x + 8;
1178 const int my = (h->mv_cache[list][scan8[0]][1] >> 2) + 16 * h->mb_y;
1179 uint8_t **src = h->ref_list[list][refn].f.data;
1180 int off = (mx << pixel_shift) +
1181 (my + (h->mb_x & 3) * 4) * h->mb_linesize +
1182 (64 << pixel_shift);
1183 h->vdsp.prefetch(src[0] + off, h->linesize, 4);
1184 if (chroma_idc == 3 /* yuv444 */) {
1185 h->vdsp.prefetch(src[1] + off, h->linesize, 4);
1186 h->vdsp.prefetch(src[2] + off, h->linesize, 4);
1187 } else {
1188 off= (((mx>>1)+64)<<pixel_shift) + ((my>>1) + (h->mb_x&7))*h->uvlinesize;
1189 h->vdsp.prefetch(src[1] + off, src[2] - src[1], 2);
1190 }
1191 }
1192}
1193
1194static void free_tables(H264Context *h, int free_rbsp)
1195{
1196 int i;
1197 H264Context *hx;
1198
1199 av_freep(&h->intra4x4_pred_mode);
1200 av_freep(&h->chroma_pred_mode_table);
1201 av_freep(&h->cbp_table);
1202 av_freep(&h->mvd_table[0]);
1203 av_freep(&h->mvd_table[1]);
1204 av_freep(&h->direct_table);
1205 av_freep(&h->non_zero_count);
1206 av_freep(&h->slice_table_base);
1207 h->slice_table = NULL;
1208 av_freep(&h->list_counts);
1209
1210 av_freep(&h->mb2b_xy);
1211 av_freep(&h->mb2br_xy);
1212
1213 for (i = 0; i < 3; i++)
1214 av_freep(&h->visualization_buffer[i]);
1215
1216 av_buffer_pool_uninit(&h->qscale_table_pool);
1217 av_buffer_pool_uninit(&h->mb_type_pool);
1218 av_buffer_pool_uninit(&h->motion_val_pool);
1219 av_buffer_pool_uninit(&h->ref_index_pool);
1220
1221 if (free_rbsp && h->DPB) {
1222 for (i = 0; i < MAX_PICTURE_COUNT; i++)
1223 unref_picture(h, &h->DPB[i]);
1224 av_freep(&h->DPB);
1225 } else if (h->DPB) {
1226 for (i = 0; i < MAX_PICTURE_COUNT; i++)
1227 h->DPB[i].needs_realloc = 1;
1228 }
1229
1230 h->cur_pic_ptr = NULL;
1231
1232 for (i = 0; i < MAX_THREADS; i++) {
1233 hx = h->thread_context[i];
1234 if (!hx)
1235 continue;
1236 av_freep(&hx->top_borders[1]);
1237 av_freep(&hx->top_borders[0]);
1238 av_freep(&hx->bipred_scratchpad);
1239 av_freep(&hx->edge_emu_buffer);
1240 av_freep(&hx->dc_val_base);
1241 av_freep(&hx->me.scratchpad);
1242 av_freep(&hx->er.mb_index2xy);
1243 av_freep(&hx->er.error_status_table);
1244 av_freep(&hx->er.er_temp_buffer);
1245 av_freep(&hx->er.mbintra_table);
1246 av_freep(&hx->er.mbskip_table);
1247
1248 if (free_rbsp) {
1249 av_freep(&hx->rbsp_buffer[1]);
1250 av_freep(&hx->rbsp_buffer[0]);
1251 hx->rbsp_buffer_size[0] = 0;
1252 hx->rbsp_buffer_size[1] = 0;
1253 }
1254 if (i)
1255 av_freep(&h->thread_context[i]);
1256 }
1257}
1258
1259static void init_dequant8_coeff_table(H264Context *h)
1260{
1261 int i, j, q, x;
1262 const int max_qp = 51 + 6 * (h->sps.bit_depth_luma - 8);
1263
1264 for (i = 0; i < 6; i++) {
1265 h->dequant8_coeff[i] = h->dequant8_buffer[i];
1266 for (j = 0; j < i; j++)
1267 if (!memcmp(h->pps.scaling_matrix8[j], h->pps.scaling_matrix8[i],
1268 64 * sizeof(uint8_t))) {
1269 h->dequant8_coeff[i] = h->dequant8_buffer[j];
1270 break;
1271 }
1272 if (j < i)
1273 continue;
1274
1275 for (q = 0; q < max_qp + 1; q++) {
1276 int shift = div6[q];
1277 int idx = rem6[q];
1278 for (x = 0; x < 64; x++)
1279 h->dequant8_coeff[i][q][(x >> 3) | ((x & 7) << 3)] =
1280 ((uint32_t)dequant8_coeff_init[idx][dequant8_coeff_init_scan[((x >> 1) & 12) | (x & 3)]] *
1281 h->pps.scaling_matrix8[i][x]) << shift;
1282 }
1283 }
1284}
1285
1286static void init_dequant4_coeff_table(H264Context *h)
1287{
1288 int i, j, q, x;
1289 const int max_qp = 51 + 6 * (h->sps.bit_depth_luma - 8);
1290 for (i = 0; i < 6; i++) {
1291 h->dequant4_coeff[i] = h->dequant4_buffer[i];
1292 for (j = 0; j < i; j++)
1293 if (!memcmp(h->pps.scaling_matrix4[j], h->pps.scaling_matrix4[i],
1294 16 * sizeof(uint8_t))) {
1295 h->dequant4_coeff[i] = h->dequant4_buffer[j];
1296 break;
1297 }
1298 if (j < i)
1299 continue;
1300
1301 for (q = 0; q < max_qp + 1; q++) {
1302 int shift = div6[q] + 2;
1303 int idx = rem6[q];
1304 for (x = 0; x < 16; x++)
1305 h->dequant4_coeff[i][q][(x >> 2) | ((x << 2) & 0xF)] =
1306 ((uint32_t)dequant4_coeff_init[idx][(x & 1) + ((x >> 2) & 1)] *
1307 h->pps.scaling_matrix4[i][x]) << shift;
1308 }
1309 }
1310}
1311
1312static void init_dequant_tables(H264Context *h)
1313{
1314 int i, x;
1315 init_dequant4_coeff_table(h);
1316 if (h->pps.transform_8x8_mode)
1317 init_dequant8_coeff_table(h);
1318 if (h->sps.transform_bypass) {
1319 for (i = 0; i < 6; i++)
1320 for (x = 0; x < 16; x++)
1321 h->dequant4_coeff[i][0][x] = 1 << 6;
1322 if (h->pps.transform_8x8_mode)
1323 for (i = 0; i < 6; i++)
1324 for (x = 0; x < 64; x++)
1325 h->dequant8_coeff[i][0][x] = 1 << 6;
1326 }
1327}
1328
1329int ff_h264_alloc_tables(H264Context *h)
1330{
1331 const int big_mb_num = h->mb_stride * (h->mb_height + 1);
1332 const int row_mb_num = 2*h->mb_stride*FFMAX(h->avctx->thread_count, 1);
1333 int x, y, i;
1334
1335 FF_ALLOCZ_OR_GOTO(h->avctx, h->intra4x4_pred_mode,
1336 row_mb_num * 8 * sizeof(uint8_t), fail)
1337 FF_ALLOCZ_OR_GOTO(h->avctx, h->non_zero_count,
1338 big_mb_num * 48 * sizeof(uint8_t), fail)
1339 FF_ALLOCZ_OR_GOTO(h->avctx, h->slice_table_base,
1340 (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base), fail)
1341 FF_ALLOCZ_OR_GOTO(h->avctx, h->cbp_table,
1342 big_mb_num * sizeof(uint16_t), fail)
1343 FF_ALLOCZ_OR_GOTO(h->avctx, h->chroma_pred_mode_table,
1344 big_mb_num * sizeof(uint8_t), fail)
1345 FF_ALLOCZ_OR_GOTO(h->avctx, h->mvd_table[0],
1346 16 * row_mb_num * sizeof(uint8_t), fail);
1347 FF_ALLOCZ_OR_GOTO(h->avctx, h->mvd_table[1],
1348 16 * row_mb_num * sizeof(uint8_t), fail);
1349 FF_ALLOCZ_OR_GOTO(h->avctx, h->direct_table,
1350 4 * big_mb_num * sizeof(uint8_t), fail);
1351 FF_ALLOCZ_OR_GOTO(h->avctx, h->list_counts,
1352 big_mb_num * sizeof(uint8_t), fail)
1353
1354 memset(h->slice_table_base, -1,
1355 (big_mb_num + h->mb_stride) * sizeof(*h->slice_table_base));
1356 h->slice_table = h->slice_table_base + h->mb_stride * 2 + 1;
1357
1358 FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2b_xy,
1359 big_mb_num * sizeof(uint32_t), fail);
1360 FF_ALLOCZ_OR_GOTO(h->avctx, h->mb2br_xy,
1361 big_mb_num * sizeof(uint32_t), fail);
1362 for (y = 0; y < h->mb_height; y++)
1363 for (x = 0; x < h->mb_width; x++) {
1364 const int mb_xy = x + y * h->mb_stride;
1365 const int b_xy = 4 * x + 4 * y * h->b_stride;
1366
1367 h->mb2b_xy[mb_xy] = b_xy;
1368 h->mb2br_xy[mb_xy] = 8 * (FMO ? mb_xy : (mb_xy % (2 * h->mb_stride)));
1369 }
1370
1371 if (!h->dequant4_coeff[0])
1372 init_dequant_tables(h);
1373
1374 if (!h->DPB) {
1375 h->DPB = av_mallocz_array(MAX_PICTURE_COUNT, sizeof(*h->DPB));
1376 if (!h->DPB)
1377 return AVERROR(ENOMEM);
1378 for (i = 0; i < MAX_PICTURE_COUNT; i++)
1379 avcodec_get_frame_defaults(&h->DPB[i].f);
1380 avcodec_get_frame_defaults(&h->cur_pic.f);
1381 }
1382
1383 return 0;
1384
1385fail:
1386 free_tables(h, 1);
1387 return AVERROR(ENOMEM);
1388}
1389
1390/**
1391 * Mimic alloc_tables(), but for every context thread.
1392 */
1393static void clone_tables(H264Context *dst, H264Context *src, int i)
1394{
1395 dst->intra4x4_pred_mode = src->intra4x4_pred_mode + i * 8 * 2 * src->mb_stride;
1396 dst->non_zero_count = src->non_zero_count;
1397 dst->slice_table = src->slice_table;
1398 dst->cbp_table = src->cbp_table;
1399 dst->mb2b_xy = src->mb2b_xy;
1400 dst->mb2br_xy = src->mb2br_xy;
1401 dst->chroma_pred_mode_table = src->chroma_pred_mode_table;
1402 dst->mvd_table[0] = src->mvd_table[0] + i * 8 * 2 * src->mb_stride;
1403 dst->mvd_table[1] = src->mvd_table[1] + i * 8 * 2 * src->mb_stride;
1404 dst->direct_table = src->direct_table;
1405 dst->list_counts = src->list_counts;
1406 dst->DPB = src->DPB;
1407 dst->cur_pic_ptr = src->cur_pic_ptr;
1408 dst->cur_pic = src->cur_pic;
1409 dst->bipred_scratchpad = NULL;
1410 dst->edge_emu_buffer = NULL;
1411 dst->me.scratchpad = NULL;
1412 ff_h264_pred_init(&dst->hpc, src->avctx->codec_id, src->sps.bit_depth_luma,
1413 src->sps.chroma_format_idc);
1414}
1415
1416/**
1417 * Init context
1418 * Allocate buffers which are not shared amongst multiple threads.
1419 */
1420static int context_init(H264Context *h)
1421{
1422 ERContext *er = &h->er;
1423 int mb_array_size = h->mb_height * h->mb_stride;
1424 int y_size = (2 * h->mb_width + 1) * (2 * h->mb_height + 1);
1425 int c_size = h->mb_stride * (h->mb_height + 1);
1426 int yc_size = y_size + 2 * c_size;
1427 int x, y, i;
1428
1429 FF_ALLOCZ_OR_GOTO(h->avctx, h->top_borders[0],
1430 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2, fail)
1431 FF_ALLOCZ_OR_GOTO(h->avctx, h->top_borders[1],
1432 h->mb_width * 16 * 3 * sizeof(uint8_t) * 2, fail)
1433
1434 h->ref_cache[0][scan8[5] + 1] =
1435 h->ref_cache[0][scan8[7] + 1] =
1436 h->ref_cache[0][scan8[13] + 1] =
1437 h->ref_cache[1][scan8[5] + 1] =
1438 h->ref_cache[1][scan8[7] + 1] =
1439 h->ref_cache[1][scan8[13] + 1] = PART_NOT_AVAILABLE;
1440
1441 if (CONFIG_ERROR_RESILIENCE) {
1442 /* init ER */
1443 er->avctx = h->avctx;
1444 er->dsp = &h->dsp;
1445 er->decode_mb = h264_er_decode_mb;
1446 er->opaque = h;
1447 er->quarter_sample = 1;
1448
1449 er->mb_num = h->mb_num;
1450 er->mb_width = h->mb_width;
1451 er->mb_height = h->mb_height;
1452 er->mb_stride = h->mb_stride;
1453 er->b8_stride = h->mb_width * 2 + 1;
1454
1455 FF_ALLOCZ_OR_GOTO(h->avctx, er->mb_index2xy, (h->mb_num + 1) * sizeof(int),
1456 fail); // error ressilience code looks cleaner with this
1457 for (y = 0; y < h->mb_height; y++)
1458 for (x = 0; x < h->mb_width; x++)
1459 er->mb_index2xy[x + y * h->mb_width] = x + y * h->mb_stride;
1460
1461 er->mb_index2xy[h->mb_height * h->mb_width] = (h->mb_height - 1) *
1462 h->mb_stride + h->mb_width;
1463
1464 FF_ALLOCZ_OR_GOTO(h->avctx, er->error_status_table,
1465 mb_array_size * sizeof(uint8_t), fail);
1466
1467 FF_ALLOC_OR_GOTO(h->avctx, er->mbintra_table, mb_array_size, fail);
1468 memset(er->mbintra_table, 1, mb_array_size);
1469
1470 FF_ALLOCZ_OR_GOTO(h->avctx, er->mbskip_table, mb_array_size + 2, fail);
1471
1472 FF_ALLOC_OR_GOTO(h->avctx, er->er_temp_buffer, h->mb_height * h->mb_stride,
1473 fail);
1474
1475 FF_ALLOCZ_OR_GOTO(h->avctx, h->dc_val_base, yc_size * sizeof(int16_t), fail);
1476 er->dc_val[0] = h->dc_val_base + h->mb_width * 2 + 2;
1477 er->dc_val[1] = h->dc_val_base + y_size + h->mb_stride + 1;
1478 er->dc_val[2] = er->dc_val[1] + c_size;
1479 for (i = 0; i < yc_size; i++)
1480 h->dc_val_base[i] = 1024;
1481 }
1482
1483 return 0;
1484
1485fail:
1486 return AVERROR(ENOMEM); // free_tables will clean up for us
1487}
1488
1489static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size,
1490 int parse_extradata);
1491
1492int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size)
1493{
1494 AVCodecContext *avctx = h->avctx;
1495 int ret;
1496
1497 if (!buf || size <= 0)
1498 return -1;
1499
1500 if (buf[0] == 1) {
1501 int i, cnt, nalsize;
1502 const unsigned char *p = buf;
1503
1504 h->is_avc = 1;
1505
1506 if (size < 7) {
1507 av_log(avctx, AV_LOG_ERROR, "avcC too short\n");
1508 return AVERROR_INVALIDDATA;
1509 }
1510 /* sps and pps in the avcC always have length coded with 2 bytes,
1511 * so put a fake nal_length_size = 2 while parsing them */
1512 h->nal_length_size = 2;
1513 // Decode sps from avcC
1514 cnt = *(p + 5) & 0x1f; // Number of sps
1515 p += 6;
1516 for (i = 0; i < cnt; i++) {
1517 nalsize = AV_RB16(p) + 2;
1518 if(nalsize > size - (p-buf))
1519 return AVERROR_INVALIDDATA;
1520 ret = decode_nal_units(h, p, nalsize, 1);
1521 if (ret < 0) {
1522 av_log(avctx, AV_LOG_ERROR,
1523 "Decoding sps %d from avcC failed\n", i);
1524 return ret;
1525 }
1526 p += nalsize;
1527 }
1528 // Decode pps from avcC
1529 cnt = *(p++); // Number of pps
1530 for (i = 0; i < cnt; i++) {
1531 nalsize = AV_RB16(p) + 2;
1532 if(nalsize > size - (p-buf))
1533 return AVERROR_INVALIDDATA;
1534 ret = decode_nal_units(h, p, nalsize, 1);
1535 if (ret < 0) {
1536 av_log(avctx, AV_LOG_ERROR,
1537 "Decoding pps %d from avcC failed\n", i);
1538 return ret;
1539 }
1540 p += nalsize;
1541 }
1542 // Now store right nal length size, that will be used to parse all other nals
1543 h->nal_length_size = (buf[4] & 0x03) + 1;
1544 } else {
1545 h->is_avc = 0;
1546 ret = decode_nal_units(h, buf, size, 1);
1547 if (ret < 0)
1548 return ret;
1549 }
1550 return size;
1551}
1552
1553av_cold int ff_h264_decode_init(AVCodecContext *avctx)
1554{
1555 H264Context *h = avctx->priv_data;
1556 int i;
1557 int ret;
1558
1559 h->avctx = avctx;
1560
1561 h->bit_depth_luma = 8;
1562 h->chroma_format_idc = 1;
1563
1564 h->avctx->bits_per_raw_sample = 8;
1565 h->cur_chroma_format_idc = 1;
1566
1567 ff_h264dsp_init(&h->h264dsp, 8, 1);
1568 av_assert0(h->sps.bit_depth_chroma == 0);
1569 ff_h264chroma_init(&h->h264chroma, h->sps.bit_depth_chroma);
1570 ff_h264qpel_init(&h->h264qpel, 8);
1571 ff_h264_pred_init(&h->hpc, h->avctx->codec_id, 8, 1);
1572
1573 h->dequant_coeff_pps = -1;
1574 h->current_sps_id = -1;
1575
1576 /* needed so that IDCT permutation is known early */
1577 if (CONFIG_ERROR_RESILIENCE)
1578 ff_dsputil_init(&h->dsp, h->avctx);
1579 ff_videodsp_init(&h->vdsp, 8);
1580
1581 memset(h->pps.scaling_matrix4, 16, 6 * 16 * sizeof(uint8_t));
1582 memset(h->pps.scaling_matrix8, 16, 2 * 64 * sizeof(uint8_t));
1583
1584 h->picture_structure = PICT_FRAME;
1585 h->slice_context_count = 1;
1586 h->workaround_bugs = avctx->workaround_bugs;
1587 h->flags = avctx->flags;
1588
1589 /* set defaults */
1590 // s->decode_mb = ff_h263_decode_mb;
1591 if (!avctx->has_b_frames)
1592 h->low_delay = 1;
1593
1594 avctx->chroma_sample_location = AVCHROMA_LOC_LEFT;
1595
1596 ff_h264_decode_init_vlc();
1597
1598 ff_init_cabac_states();
1599
1600 h->pixel_shift = 0;
1601 h->sps.bit_depth_luma = avctx->bits_per_raw_sample = 8;
1602
1603 h->thread_context[0] = h;
1604 h->outputed_poc = h->next_outputed_poc = INT_MIN;
1605 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
1606 h->last_pocs[i] = INT_MIN;
1607 h->prev_poc_msb = 1 << 16;
1608 h->prev_frame_num = -1;
1609 h->x264_build = -1;
1610 h->sei_fpa.frame_packing_arrangement_cancel_flag = -1;
1611 ff_h264_reset_sei(h);
1612 if (avctx->codec_id == AV_CODEC_ID_H264) {
1613 if (avctx->ticks_per_frame == 1) {
1614 if(h->avctx->time_base.den < INT_MAX/2) {
1615 h->avctx->time_base.den *= 2;
1616 } else
1617 h->avctx->time_base.num /= 2;
1618 }
1619 avctx->ticks_per_frame = 2;
1620 }
1621
1622 if (avctx->extradata_size > 0 && avctx->extradata) {
1623 ret = ff_h264_decode_extradata(h, avctx->extradata, avctx->extradata_size);
1624 if (ret < 0) {
1625 ff_h264_free_context(h);
1626 return ret;
1627 }
1628 }
1629
1630 if (h->sps.bitstream_restriction_flag &&
1631 h->avctx->has_b_frames < h->sps.num_reorder_frames) {
1632 h->avctx->has_b_frames = h->sps.num_reorder_frames;
1633 h->low_delay = 0;
1634 }
1635
1636 avctx->internal->allocate_progress = 1;
1637
1638 flush_change(h);
1639
1640 return 0;
1641}
1642
1643#define IN_RANGE(a, b, size) (((a) >= (b)) && ((a) < ((b) + (size))))
1644#undef REBASE_PICTURE
1645#define REBASE_PICTURE(pic, new_ctx, old_ctx) \
1646 ((pic && pic >= old_ctx->DPB && \
1647 pic < old_ctx->DPB + MAX_PICTURE_COUNT) ? \
1648 &new_ctx->DPB[pic - old_ctx->DPB] : NULL)
1649
1650static void copy_picture_range(Picture **to, Picture **from, int count,
1651 H264Context *new_base,
1652 H264Context *old_base)
1653{
1654 int i;
1655
1656 for (i = 0; i < count; i++) {
1657 assert((IN_RANGE(from[i], old_base, sizeof(*old_base)) ||
1658 IN_RANGE(from[i], old_base->DPB,
1659 sizeof(Picture) * MAX_PICTURE_COUNT) ||
1660 !from[i]));
1661 to[i] = REBASE_PICTURE(from[i], new_base, old_base);
1662 }
1663}
1664
1665static int copy_parameter_set(void **to, void **from, int count, int size)
1666{
1667 int i;
1668
1669 for (i = 0; i < count; i++) {
1670 if (to[i] && !from[i]) {
1671 av_freep(&to[i]);
1672 } else if (from[i] && !to[i]) {
1673 to[i] = av_malloc(size);
1674 if (!to[i])
1675 return AVERROR(ENOMEM);
1676 }
1677
1678 if (from[i])
1679 memcpy(to[i], from[i], size);
1680 }
1681
1682 return 0;
1683}
1684
1685static int decode_init_thread_copy(AVCodecContext *avctx)
1686{
1687 H264Context *h = avctx->priv_data;
1688
1689 if (!avctx->internal->is_copy)
1690 return 0;
1691 memset(h->sps_buffers, 0, sizeof(h->sps_buffers));
1692 memset(h->pps_buffers, 0, sizeof(h->pps_buffers));
1693
1694 h->rbsp_buffer[0] = NULL;
1695 h->rbsp_buffer[1] = NULL;
1696 h->rbsp_buffer_size[0] = 0;
1697 h->rbsp_buffer_size[1] = 0;
1698 h->context_initialized = 0;
1699
1700 return 0;
1701}
1702
1703#define copy_fields(to, from, start_field, end_field) \
1704 memcpy(&to->start_field, &from->start_field, \
1705 (char *)&to->end_field - (char *)&to->start_field)
1706
1707static int h264_slice_header_init(H264Context *, int);
1708
1709static int h264_set_parameter_from_sps(H264Context *h);
1710
1711static int decode_update_thread_context(AVCodecContext *dst,
1712 const AVCodecContext *src)
1713{
1714 H264Context *h = dst->priv_data, *h1 = src->priv_data;
1715 int inited = h->context_initialized, err = 0;
1716 int context_reinitialized = 0;
1717 int i, ret;
1718
1719 if (dst == src)
1720 return 0;
1721
1722 if (inited &&
1723 (h->width != h1->width ||
1724 h->height != h1->height ||
1725 h->mb_width != h1->mb_width ||
1726 h->mb_height != h1->mb_height ||
1727 h->sps.bit_depth_luma != h1->sps.bit_depth_luma ||
1728 h->sps.chroma_format_idc != h1->sps.chroma_format_idc ||
1729 h->sps.colorspace != h1->sps.colorspace)) {
1730
1731 /* set bits_per_raw_sample to the previous value. the check for changed
1732 * bit depth in h264_set_parameter_from_sps() uses it and sets it to
1733 * the current value */
1734 h->avctx->bits_per_raw_sample = h->sps.bit_depth_luma;
1735
1736 av_freep(&h->bipred_scratchpad);
1737
1738 h->width = h1->width;
1739 h->height = h1->height;
1740 h->mb_height = h1->mb_height;
1741 h->mb_width = h1->mb_width;
1742 h->mb_num = h1->mb_num;
1743 h->mb_stride = h1->mb_stride;
1744 h->b_stride = h1->b_stride;
1745 // SPS/PPS
1746 if ((ret = copy_parameter_set((void **)h->sps_buffers,
1747 (void **)h1->sps_buffers,
1748 MAX_SPS_COUNT, sizeof(SPS))) < 0)
1749 return ret;
1750 h->sps = h1->sps;
1751 if ((ret = copy_parameter_set((void **)h->pps_buffers,
1752 (void **)h1->pps_buffers,
1753 MAX_PPS_COUNT, sizeof(PPS))) < 0)
1754 return ret;
1755 h->pps = h1->pps;
1756
1757 if ((err = h264_slice_header_init(h, 1)) < 0) {
1758 av_log(h->avctx, AV_LOG_ERROR, "h264_slice_header_init() failed");
1759 return err;
1760 }
1761 context_reinitialized = 1;
1762
1763#if 0
1764 h264_set_parameter_from_sps(h);
1765 //Note we set context_reinitialized which will cause h264_set_parameter_from_sps to be reexecuted
1766 h->cur_chroma_format_idc = h1->cur_chroma_format_idc;
1767#endif
1768 }
1769 /* update linesize on resize for h264. The h264 decoder doesn't
1770 * necessarily call ff_MPV_frame_start in the new thread */
1771 h->linesize = h1->linesize;
1772 h->uvlinesize = h1->uvlinesize;
1773
1774 /* copy block_offset since frame_start may not be called */
1775 memcpy(h->block_offset, h1->block_offset, sizeof(h->block_offset));
1776
1777 if (!inited) {
1778 for (i = 0; i < MAX_SPS_COUNT; i++)
1779 av_freep(h->sps_buffers + i);
1780
1781 for (i = 0; i < MAX_PPS_COUNT; i++)
1782 av_freep(h->pps_buffers + i);
1783
1784 av_freep(&h->rbsp_buffer[0]);
1785 av_freep(&h->rbsp_buffer[1]);
1786 memcpy(h, h1, offsetof(H264Context, intra_pcm_ptr));
1787 memcpy(&h->cabac, &h1->cabac,
1788 sizeof(H264Context) - offsetof(H264Context, cabac));
1789 av_assert0((void*)&h->cabac == &h->mb_padding + 1);
1790
1791 memset(h->sps_buffers, 0, sizeof(h->sps_buffers));
1792 memset(h->pps_buffers, 0, sizeof(h->pps_buffers));
1793
1794 memset(&h->er, 0, sizeof(h->er));
1795 memset(&h->me, 0, sizeof(h->me));
1796 memset(&h->mb, 0, sizeof(h->mb));
1797 memset(&h->mb_luma_dc, 0, sizeof(h->mb_luma_dc));
1798 memset(&h->mb_padding, 0, sizeof(h->mb_padding));
1799
1800 h->avctx = dst;
1801 h->DPB = NULL;
1802 h->qscale_table_pool = NULL;
1803 h->mb_type_pool = NULL;
1804 h->ref_index_pool = NULL;
1805 h->motion_val_pool = NULL;
1806 for (i = 0; i < 2; i++) {
1807 h->rbsp_buffer[i] = NULL;
1808 h->rbsp_buffer_size[i] = 0;
1809 }
1810
1811 if (h1->context_initialized) {
1812 h->context_initialized = 0;
1813
1814 memset(&h->cur_pic, 0, sizeof(h->cur_pic));
1815 avcodec_get_frame_defaults(&h->cur_pic.f);
1816 h->cur_pic.tf.f = &h->cur_pic.f;
1817
1818 ret = ff_h264_alloc_tables(h);
1819 if (ret < 0) {
1820 av_log(dst, AV_LOG_ERROR, "Could not allocate memory for h264\n");
1821 return ret;
1822 }
1823 ret = context_init(h);
1824 if (ret < 0) {
1825 av_log(dst, AV_LOG_ERROR, "context_init() failed.\n");
1826 return ret;
1827 }
1828 }
1829
1830 h->bipred_scratchpad = NULL;
1831 h->edge_emu_buffer = NULL;
1832
1833 h->thread_context[0] = h;
1834 h->context_initialized = h1->context_initialized;
1835 }
1836
1837 h->avctx->coded_height = h1->avctx->coded_height;
1838 h->avctx->coded_width = h1->avctx->coded_width;
1839 h->avctx->width = h1->avctx->width;
1840 h->avctx->height = h1->avctx->height;
1841 h->coded_picture_number = h1->coded_picture_number;
1842 h->first_field = h1->first_field;
1843 h->picture_structure = h1->picture_structure;
1844 h->qscale = h1->qscale;
1845 h->droppable = h1->droppable;
1846 h->data_partitioning = h1->data_partitioning;
1847 h->low_delay = h1->low_delay;
1848
1849 for (i = 0; h->DPB && i < MAX_PICTURE_COUNT; i++) {
1850 unref_picture(h, &h->DPB[i]);
1851 if (h1->DPB[i].f.data[0] &&
1852 (ret = ref_picture(h, &h->DPB[i], &h1->DPB[i])) < 0)
1853 return ret;
1854 }
1855
1856 h->cur_pic_ptr = REBASE_PICTURE(h1->cur_pic_ptr, h, h1);
1857 unref_picture(h, &h->cur_pic);
1858 if (h1->cur_pic.f.buf[0] && (ret = ref_picture(h, &h->cur_pic, &h1->cur_pic)) < 0)
1859 return ret;
1860
1861 h->workaround_bugs = h1->workaround_bugs;
1862 h->low_delay = h1->low_delay;
1863 h->droppable = h1->droppable;
1864
1865 // extradata/NAL handling
1866 h->is_avc = h1->is_avc;
1867
1868 // SPS/PPS
1869 if ((ret = copy_parameter_set((void **)h->sps_buffers,
1870 (void **)h1->sps_buffers,
1871 MAX_SPS_COUNT, sizeof(SPS))) < 0)
1872 return ret;
1873 h->sps = h1->sps;
1874 if ((ret = copy_parameter_set((void **)h->pps_buffers,
1875 (void **)h1->pps_buffers,
1876 MAX_PPS_COUNT, sizeof(PPS))) < 0)
1877 return ret;
1878 h->pps = h1->pps;
1879
1880 // Dequantization matrices
1881 // FIXME these are big - can they be only copied when PPS changes?
1882 copy_fields(h, h1, dequant4_buffer, dequant4_coeff);
1883
1884 for (i = 0; i < 6; i++)
1885 h->dequant4_coeff[i] = h->dequant4_buffer[0] +
1886 (h1->dequant4_coeff[i] - h1->dequant4_buffer[0]);
1887
1888 for (i = 0; i < 6; i++)
1889 h->dequant8_coeff[i] = h->dequant8_buffer[0] +
1890 (h1->dequant8_coeff[i] - h1->dequant8_buffer[0]);
1891
1892 h->dequant_coeff_pps = h1->dequant_coeff_pps;
1893
1894 // POC timing
1895 copy_fields(h, h1, poc_lsb, redundant_pic_count);
1896
1897 // reference lists
1898 copy_fields(h, h1, short_ref, cabac_init_idc);
1899
1900 copy_picture_range(h->short_ref, h1->short_ref, 32, h, h1);
1901 copy_picture_range(h->long_ref, h1->long_ref, 32, h, h1);
1902 copy_picture_range(h->delayed_pic, h1->delayed_pic,
1903 MAX_DELAYED_PIC_COUNT + 2, h, h1);
1904
1905 h->sync = h1->sync;
1906
1907 if (context_reinitialized)
1908 h264_set_parameter_from_sps(h);
1909
1910 if (!h->cur_pic_ptr)
1911 return 0;
1912
1913 if (!h->droppable) {
1914 err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
1915 h->prev_poc_msb = h->poc_msb;
1916 h->prev_poc_lsb = h->poc_lsb;
1917 }
1918 h->prev_frame_num_offset = h->frame_num_offset;
1919 h->prev_frame_num = h->frame_num;
1920 h->outputed_poc = h->next_outputed_poc;
1921
1922 return err;
1923}
1924
1925static int h264_frame_start(H264Context *h)
1926{
1927 Picture *pic;
1928 int i, ret;
1929 const int pixel_shift = h->pixel_shift;
1930 int c[4] = {
1931 1<<(h->sps.bit_depth_luma-1),
1932 1<<(h->sps.bit_depth_chroma-1),
1933 1<<(h->sps.bit_depth_chroma-1),
1934 -1
1935 };
1936
1937 if (!ff_thread_can_start_frame(h->avctx)) {
1938 av_log(h->avctx, AV_LOG_ERROR, "Attempt to start a frame outside SETUP state\n");
1939 return -1;
1940 }
1941
1942 release_unused_pictures(h, 1);
1943 h->cur_pic_ptr = NULL;
1944
1945 i = find_unused_picture(h);
1946 if (i < 0) {
1947 av_log(h->avctx, AV_LOG_ERROR, "no frame buffer available\n");
1948 return i;
1949 }
1950 pic = &h->DPB[i];
1951
1952 pic->reference = h->droppable ? 0 : h->picture_structure;
1953 pic->f.coded_picture_number = h->coded_picture_number++;
1954 pic->field_picture = h->picture_structure != PICT_FRAME;
1955
1956 /*
1957 * Zero key_frame here; IDR markings per slice in frame or fields are ORed
1958 * in later.
1959 * See decode_nal_units().
1960 */
1961 pic->f.key_frame = 0;
1962 pic->sync = 0;
1963 pic->mmco_reset = 0;
1964
1965 if ((ret = alloc_picture(h, pic)) < 0)
1966 return ret;
1967 if(!h->sync && !h->avctx->hwaccel &&
1968 !(h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU))
1969 avpriv_color_frame(&pic->f, c);
1970
1971 h->cur_pic_ptr = pic;
1972 unref_picture(h, &h->cur_pic);
1973 if ((ret = ref_picture(h, &h->cur_pic, h->cur_pic_ptr)) < 0)
1974 return ret;
1975
1976 if (CONFIG_ERROR_RESILIENCE) {
1977 ff_er_frame_start(&h->er);
1978 h->er.last_pic =
1979 h->er.next_pic = NULL;
1980 }
1981
1982 assert(h->linesize && h->uvlinesize);
1983
1984 for (i = 0; i < 16; i++) {
1985 h->block_offset[i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * h->linesize * ((scan8[i] - scan8[0]) >> 3);
1986 h->block_offset[48 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * h->linesize * ((scan8[i] - scan8[0]) >> 3);
1987 }
1988 for (i = 0; i < 16; i++) {
1989 h->block_offset[16 + i] =
1990 h->block_offset[32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 4 * h->uvlinesize * ((scan8[i] - scan8[0]) >> 3);
1991 h->block_offset[48 + 16 + i] =
1992 h->block_offset[48 + 32 + i] = (4 * ((scan8[i] - scan8[0]) & 7) << pixel_shift) + 8 * h->uvlinesize * ((scan8[i] - scan8[0]) >> 3);
1993 }
1994
1995 // s->decode = (h->flags & CODEC_FLAG_PSNR) || !s->encoding ||
1996 // h->cur_pic.reference /* || h->contains_intra */ || 1;
1997
1998 /* We mark the current picture as non-reference after allocating it, so
1999 * that if we break out due to an error it can be released automatically
2000 * in the next ff_MPV_frame_start().
2001 */
2002 h->cur_pic_ptr->reference = 0;
2003
2004 h->cur_pic_ptr->field_poc[0] = h->cur_pic_ptr->field_poc[1] = INT_MAX;
2005
2006 h->next_output_pic = NULL;
2007
2008 assert(h->cur_pic_ptr->long_ref == 0);
2009
2010 return 0;
2011}
2012
2013/**
2014 * Run setup operations that must be run after slice header decoding.
2015 * This includes finding the next displayed frame.
2016 *
2017 * @param h h264 master context
2018 * @param setup_finished enough NALs have been read that we can call
2019 * ff_thread_finish_setup()
2020 */
2021static void decode_postinit(H264Context *h, int setup_finished)
2022{
2023 Picture *out = h->cur_pic_ptr;
2024 Picture *cur = h->cur_pic_ptr;
2025 int i, pics, out_of_order, out_idx;
2026
2027 h->cur_pic_ptr->f.pict_type = h->pict_type;
2028
2029 if (h->next_output_pic)
2030 return;
2031
2032 if (cur->field_poc[0] == INT_MAX || cur->field_poc[1] == INT_MAX) {
2033 /* FIXME: if we have two PAFF fields in one packet, we can't start
2034 * the next thread here. If we have one field per packet, we can.
2035 * The check in decode_nal_units() is not good enough to find this
2036 * yet, so we assume the worst for now. */
2037 // if (setup_finished)
2038 // ff_thread_finish_setup(h->avctx);
2039 return;
2040 }
2041
2042 cur->f.interlaced_frame = 0;
2043 cur->f.repeat_pict = 0;
2044
2045 /* Signal interlacing information externally. */
2046 /* Prioritize picture timing SEI information over used
2047 * decoding process if it exists. */
2048
2049 if (h->sps.pic_struct_present_flag) {
2050 switch (h->sei_pic_struct) {
2051 case SEI_PIC_STRUCT_FRAME:
2052 break;
2053 case SEI_PIC_STRUCT_TOP_FIELD:
2054 case SEI_PIC_STRUCT_BOTTOM_FIELD:
2055 cur->f.interlaced_frame = 1;
2056 break;
2057 case SEI_PIC_STRUCT_TOP_BOTTOM:
2058 case SEI_PIC_STRUCT_BOTTOM_TOP:
2059 if (FIELD_OR_MBAFF_PICTURE(h))
2060 cur->f.interlaced_frame = 1;
2061 else
2062 // try to flag soft telecine progressive
2063 cur->f.interlaced_frame = h->prev_interlaced_frame;
2064 break;
2065 case SEI_PIC_STRUCT_TOP_BOTTOM_TOP:
2066 case SEI_PIC_STRUCT_BOTTOM_TOP_BOTTOM:
2067 /* Signal the possibility of telecined film externally
2068 * (pic_struct 5,6). From these hints, let the applications
2069 * decide if they apply deinterlacing. */
2070 cur->f.repeat_pict = 1;
2071 break;
2072 case SEI_PIC_STRUCT_FRAME_DOUBLING:
2073 cur->f.repeat_pict = 2;
2074 break;
2075 case SEI_PIC_STRUCT_FRAME_TRIPLING:
2076 cur->f.repeat_pict = 4;
2077 break;
2078 }
2079
2080 if ((h->sei_ct_type & 3) &&
2081 h->sei_pic_struct <= SEI_PIC_STRUCT_BOTTOM_TOP)
2082 cur->f.interlaced_frame = (h->sei_ct_type & (1 << 1)) != 0;
2083 } else {
2084 /* Derive interlacing flag from used decoding process. */
2085 cur->f.interlaced_frame = FIELD_OR_MBAFF_PICTURE(h);
2086 }
2087 h->prev_interlaced_frame = cur->f.interlaced_frame;
2088
2089 if (cur->field_poc[0] != cur->field_poc[1]) {
2090 /* Derive top_field_first from field pocs. */
2091 cur->f.top_field_first = cur->field_poc[0] < cur->field_poc[1];
2092 } else {
2093 if (cur->f.interlaced_frame || h->sps.pic_struct_present_flag) {
2094 /* Use picture timing SEI information. Even if it is a
2095 * information of a past frame, better than nothing. */
2096 if (h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM ||
2097 h->sei_pic_struct == SEI_PIC_STRUCT_TOP_BOTTOM_TOP)
2098 cur->f.top_field_first = 1;
2099 else
2100 cur->f.top_field_first = 0;
2101 } else {
2102 /* Most likely progressive */
2103 cur->f.top_field_first = 0;
2104 }
2105 }
2106
2107 cur->mmco_reset = h->mmco_reset;
2108 h->mmco_reset = 0;
2109 // FIXME do something with unavailable reference frames
2110
2111 /* Sort B-frames into display order */
2112
2113 if (h->sps.bitstream_restriction_flag &&
2114 h->avctx->has_b_frames < h->sps.num_reorder_frames) {
2115 h->avctx->has_b_frames = h->sps.num_reorder_frames;
2116 h->low_delay = 0;
2117 }
2118
2119 if (h->avctx->strict_std_compliance >= FF_COMPLIANCE_STRICT &&
2120 !h->sps.bitstream_restriction_flag) {
2121 h->avctx->has_b_frames = MAX_DELAYED_PIC_COUNT - 1;
2122 h->low_delay = 0;
2123 }
2124
2125 for (i = 0; 1; i++) {
2126 if(i == MAX_DELAYED_PIC_COUNT || cur->poc < h->last_pocs[i]){
2127 if(i)
2128 h->last_pocs[i-1] = cur->poc;
2129 break;
2130 } else if(i) {
2131 h->last_pocs[i-1]= h->last_pocs[i];
2132 }
2133 }
2134 out_of_order = MAX_DELAYED_PIC_COUNT - i;
2135 if( cur->f.pict_type == AV_PICTURE_TYPE_B
2136 || (h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > INT_MIN && h->last_pocs[MAX_DELAYED_PIC_COUNT-1] - h->last_pocs[MAX_DELAYED_PIC_COUNT-2] > 2))
2137 out_of_order = FFMAX(out_of_order, 1);
2138 if (out_of_order == MAX_DELAYED_PIC_COUNT) {
2139 av_log(h->avctx, AV_LOG_VERBOSE, "Invalid POC %d<%d\n", cur->poc, h->last_pocs[0]);
2140 for (i = 1; i < MAX_DELAYED_PIC_COUNT; i++)
2141 h->last_pocs[i] = INT_MIN;
2142 h->last_pocs[0] = cur->poc;
2143 cur->mmco_reset = 1;
2144 } else if(h->avctx->has_b_frames < out_of_order && !h->sps.bitstream_restriction_flag){
2145 av_log(h->avctx, AV_LOG_VERBOSE, "Increasing reorder buffer to %d\n", out_of_order);
2146 h->avctx->has_b_frames = out_of_order;
2147 h->low_delay = 0;
2148 }
2149
2150 pics = 0;
2151 while (h->delayed_pic[pics])
2152 pics++;
2153
2154 av_assert0(pics <= MAX_DELAYED_PIC_COUNT);
2155
2156 h->delayed_pic[pics++] = cur;
2157 if (cur->reference == 0)
2158 cur->reference = DELAYED_PIC_REF;
2159
2160 out = h->delayed_pic[0];
2161 out_idx = 0;
2162 for (i = 1; h->delayed_pic[i] &&
2163 !h->delayed_pic[i]->f.key_frame &&
2164 !h->delayed_pic[i]->mmco_reset;
2165 i++)
2166 if (h->delayed_pic[i]->poc < out->poc) {
2167 out = h->delayed_pic[i];
2168 out_idx = i;
2169 }
2170 if (h->avctx->has_b_frames == 0 &&
2171 (h->delayed_pic[0]->f.key_frame || h->delayed_pic[0]->mmco_reset))
2172 h->next_outputed_poc = INT_MIN;
2173 out_of_order = out->poc < h->next_outputed_poc;
2174
2175 if (out_of_order || pics > h->avctx->has_b_frames) {
2176 out->reference &= ~DELAYED_PIC_REF;
2177 // for frame threading, the owner must be the second field's thread or
2178 // else the first thread can release the picture and reuse it unsafely
2179 for (i = out_idx; h->delayed_pic[i]; i++)
2180 h->delayed_pic[i] = h->delayed_pic[i + 1];
2181 }
2182 if (!out_of_order && pics > h->avctx->has_b_frames) {
2183 h->next_output_pic = out;
2184 if (out_idx == 0 && h->delayed_pic[0] && (h->delayed_pic[0]->f.key_frame || h->delayed_pic[0]->mmco_reset)) {
2185 h->next_outputed_poc = INT_MIN;
2186 } else
2187 h->next_outputed_poc = out->poc;
2188 } else {
2189 av_log(h->avctx, AV_LOG_DEBUG, "no picture %s\n", out_of_order ? "ooo" : "");
2190 }
2191
2192 if (h->next_output_pic && h->next_output_pic->sync) {
2193 h->sync |= 2;
2194 }
2195
2196 if (setup_finished && !h->avctx->hwaccel)
2197 ff_thread_finish_setup(h->avctx);
2198}
2199
2200static av_always_inline void backup_mb_border(H264Context *h, uint8_t *src_y,
2201 uint8_t *src_cb, uint8_t *src_cr,
2202 int linesize, int uvlinesize,
2203 int simple)
2204{
2205 uint8_t *top_border;
2206 int top_idx = 1;
2207 const int pixel_shift = h->pixel_shift;
2208 int chroma444 = CHROMA444(h);
2209 int chroma422 = CHROMA422(h);
2210
2211 src_y -= linesize;
2212 src_cb -= uvlinesize;
2213 src_cr -= uvlinesize;
2214
2215 if (!simple && FRAME_MBAFF(h)) {
2216 if (h->mb_y & 1) {
2217 if (!MB_MBAFF(h)) {
2218 top_border = h->top_borders[0][h->mb_x];
2219 AV_COPY128(top_border, src_y + 15 * linesize);
2220 if (pixel_shift)
2221 AV_COPY128(top_border + 16, src_y + 15 * linesize + 16);
2222 if (simple || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
2223 if (chroma444) {
2224 if (pixel_shift) {
2225 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
2226 AV_COPY128(top_border + 48, src_cb + 15 * uvlinesize + 16);
2227 AV_COPY128(top_border + 64, src_cr + 15 * uvlinesize);
2228 AV_COPY128(top_border + 80, src_cr + 15 * uvlinesize + 16);
2229 } else {
2230 AV_COPY128(top_border + 16, src_cb + 15 * uvlinesize);
2231 AV_COPY128(top_border + 32, src_cr + 15 * uvlinesize);
2232 }
2233 } else if (chroma422) {
2234 if (pixel_shift) {
2235 AV_COPY128(top_border + 32, src_cb + 15 * uvlinesize);
2236 AV_COPY128(top_border + 48, src_cr + 15 * uvlinesize);
2237 } else {
2238 AV_COPY64(top_border + 16, src_cb + 15 * uvlinesize);
2239 AV_COPY64(top_border + 24, src_cr + 15 * uvlinesize);
2240 }
2241 } else {
2242 if (pixel_shift) {
2243 AV_COPY128(top_border + 32, src_cb + 7 * uvlinesize);
2244 AV_COPY128(top_border + 48, src_cr + 7 * uvlinesize);
2245 } else {
2246 AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
2247 AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
2248 }
2249 }
2250 }
2251 }
2252 } else if (MB_MBAFF(h)) {
2253 top_idx = 0;
2254 } else
2255 return;
2256 }
2257
2258 top_border = h->top_borders[top_idx][h->mb_x];
2259 /* There are two lines saved, the line above the top macroblock
2260 * of a pair, and the line above the bottom macroblock. */
2261 AV_COPY128(top_border, src_y + 16 * linesize);
2262 if (pixel_shift)
2263 AV_COPY128(top_border + 16, src_y + 16 * linesize + 16);
2264
2265 if (simple || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
2266 if (chroma444) {
2267 if (pixel_shift) {
2268 AV_COPY128(top_border + 32, src_cb + 16 * linesize);
2269 AV_COPY128(top_border + 48, src_cb + 16 * linesize + 16);
2270 AV_COPY128(top_border + 64, src_cr + 16 * linesize);
2271 AV_COPY128(top_border + 80, src_cr + 16 * linesize + 16);
2272 } else {
2273 AV_COPY128(top_border + 16, src_cb + 16 * linesize);
2274 AV_COPY128(top_border + 32, src_cr + 16 * linesize);
2275 }
2276 } else if (chroma422) {
2277 if (pixel_shift) {
2278 AV_COPY128(top_border + 32, src_cb + 16 * uvlinesize);
2279 AV_COPY128(top_border + 48, src_cr + 16 * uvlinesize);
2280 } else {
2281 AV_COPY64(top_border + 16, src_cb + 16 * uvlinesize);
2282 AV_COPY64(top_border + 24, src_cr + 16 * uvlinesize);
2283 }
2284 } else {
2285 if (pixel_shift) {
2286 AV_COPY128(top_border + 32, src_cb + 8 * uvlinesize);
2287 AV_COPY128(top_border + 48, src_cr + 8 * uvlinesize);
2288 } else {
2289 AV_COPY64(top_border + 16, src_cb + 8 * uvlinesize);
2290 AV_COPY64(top_border + 24, src_cr + 8 * uvlinesize);
2291 }
2292 }
2293 }
2294}
2295
2296static av_always_inline void xchg_mb_border(H264Context *h, uint8_t *src_y,
2297 uint8_t *src_cb, uint8_t *src_cr,
2298 int linesize, int uvlinesize,
2299 int xchg, int chroma444,
2300 int simple, int pixel_shift)
2301{
2302 int deblock_topleft;
2303 int deblock_top;
2304 int top_idx = 1;
2305 uint8_t *top_border_m1;
2306 uint8_t *top_border;
2307
2308 if (!simple && FRAME_MBAFF(h)) {
2309 if (h->mb_y & 1) {
2310 if (!MB_MBAFF(h))
2311 return;
2312 } else {
2313 top_idx = MB_MBAFF(h) ? 0 : 1;
2314 }
2315 }
2316
2317 if (h->deblocking_filter == 2) {
2318 deblock_topleft = h->slice_table[h->mb_xy - 1 - h->mb_stride] == h->slice_num;
2319 deblock_top = h->top_type;
2320 } else {
2321 deblock_topleft = (h->mb_x > 0);
2322 deblock_top = (h->mb_y > !!MB_FIELD(h));
2323 }
2324
2325 src_y -= linesize + 1 + pixel_shift;
2326 src_cb -= uvlinesize + 1 + pixel_shift;
2327 src_cr -= uvlinesize + 1 + pixel_shift;
2328
2329 top_border_m1 = h->top_borders[top_idx][h->mb_x - 1];
2330 top_border = h->top_borders[top_idx][h->mb_x];
2331
2332#define XCHG(a, b, xchg) \
2333 if (pixel_shift) { \
2334 if (xchg) { \
2335 AV_SWAP64(b + 0, a + 0); \
2336 AV_SWAP64(b + 8, a + 8); \
2337 } else { \
2338 AV_COPY128(b, a); \
2339 } \
2340 } else if (xchg) \
2341 AV_SWAP64(b, a); \
2342 else \
2343 AV_COPY64(b, a);
2344
2345 if (deblock_top) {
2346 if (deblock_topleft) {
2347 XCHG(top_border_m1 + (8 << pixel_shift),
2348 src_y - (7 << pixel_shift), 1);
2349 }
2350 XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);
2351 XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);
2352 if (h->mb_x + 1 < h->mb_width) {
2353 XCHG(h->top_borders[top_idx][h->mb_x + 1],
2354 src_y + (17 << pixel_shift), 1);
2355 }
2356 if (simple || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {
2357 if (chroma444) {
2358 if (deblock_topleft) {
2359 XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1);
2360 XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1);
2361 }
2362 XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg);
2363 XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1);
2364 XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg);
2365 XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1);
2366 if (h->mb_x + 1 < h->mb_width) {
2367 XCHG(h->top_borders[top_idx][h->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1);
2368 XCHG(h->top_borders[top_idx][h->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1);
2369 }
2370 } else {
2371 if (deblock_topleft) {
2372 XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);
2373 XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);
2374 }
2375 XCHG(top_border + (16 << pixel_shift), src_cb + 1 + pixel_shift, 1);
2376 XCHG(top_border + (24 << pixel_shift), src_cr + 1 + pixel_shift, 1);
2377 }
2378 }
2379 }
2380}
2381
2382static av_always_inline int dctcoef_get(int16_t *mb, int high_bit_depth,
2383 int index)
2384{
2385 if (high_bit_depth) {
2386 return AV_RN32A(((int32_t *)mb) + index);
2387 } else
2388 return AV_RN16A(mb + index);
2389}
2390
2391static av_always_inline void dctcoef_set(int16_t *mb, int high_bit_depth,
2392 int index, int value)
2393{
2394 if (high_bit_depth) {
2395 AV_WN32A(((int32_t *)mb) + index, value);
2396 } else
2397 AV_WN16A(mb + index, value);
2398}
2399
2400static av_always_inline void hl_decode_mb_predict_luma(H264Context *h,
2401 int mb_type, int is_h264,
2402 int simple,
2403 int transform_bypass,
2404 int pixel_shift,
2405 int *block_offset,
2406 int linesize,
2407 uint8_t *dest_y, int p)
2408{
2409 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
2410 void (*idct_dc_add)(uint8_t *dst, int16_t *block, int stride);
2411 int i;
2412 int qscale = p == 0 ? h->qscale : h->chroma_qp[p - 1];
2413 block_offset += 16 * p;
2414 if (IS_INTRA4x4(mb_type)) {
2415 if (IS_8x8DCT(mb_type)) {
2416 if (transform_bypass) {
2417 idct_dc_add =
2418 idct_add = h->h264dsp.h264_add_pixels8_clear;
2419 } else {
2420 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
2421 idct_add = h->h264dsp.h264_idct8_add;
2422 }
2423 for (i = 0; i < 16; i += 4) {
2424 uint8_t *const ptr = dest_y + block_offset[i];
2425 const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
2426 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
2427 h->hpc.pred8x8l_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
2428 } else {
2429 const int nnz = h->non_zero_count_cache[scan8[i + p * 16]];
2430 h->hpc.pred8x8l[dir](ptr, (h->topleft_samples_available << i) & 0x8000,
2431 (h->topright_samples_available << i) & 0x4000, linesize);
2432 if (nnz) {
2433 if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
2434 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
2435 else
2436 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
2437 }
2438 }
2439 }
2440 } else {
2441 if (transform_bypass) {
2442 idct_dc_add =
2443 idct_add = h->h264dsp.h264_add_pixels4_clear;
2444 } else {
2445 idct_dc_add = h->h264dsp.h264_idct_dc_add;
2446 idct_add = h->h264dsp.h264_idct_add;
2447 }
2448 for (i = 0; i < 16; i++) {
2449 uint8_t *const ptr = dest_y + block_offset[i];
2450 const int dir = h->intra4x4_pred_mode_cache[scan8[i]];
2451
2452 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {
2453 h->hpc.pred4x4_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
2454 } else {
2455 uint8_t *topright;
2456 int nnz, tr;
2457 uint64_t tr_high;
2458 if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
2459 const int topright_avail = (h->topright_samples_available << i) & 0x8000;
2460 av_assert2(h->mb_y || linesize <= block_offset[i]);
2461 if (!topright_avail) {
2462 if (pixel_shift) {
2463 tr_high = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;
2464 topright = (uint8_t *)&tr_high;
2465 } else {
2466 tr = ptr[3 - linesize] * 0x01010101u;
2467 topright = (uint8_t *)&tr;
2468 }
2469 } else
2470 topright = ptr + (4 << pixel_shift) - linesize;
2471 } else
2472 topright = NULL;
2473
2474 h->hpc.pred4x4[dir](ptr, topright, linesize);
2475 nnz = h->non_zero_count_cache[scan8[i + p * 16]];
2476 if (nnz) {
2477 if (is_h264) {
2478 if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
2479 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
2480 else
2481 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);
2482 } else if (CONFIG_SVQ3_DECODER)
2483 ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize, qscale, 0);
2484 }
2485 }
2486 }
2487 }
2488 } else {
2489 h->hpc.pred16x16[h->intra16x16_pred_mode](dest_y, linesize);
2490 if (is_h264) {
2491 if (h->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) {
2492 if (!transform_bypass)
2493 h->h264dsp.h264_luma_dc_dequant_idct(h->mb + (p * 256 << pixel_shift),
2494 h->mb_luma_dc[p],
2495 h->dequant4_coeff[p][qscale][0]);
2496 else {
2497 static const uint8_t dc_mapping[16] = {
2498 0 * 16, 1 * 16, 4 * 16, 5 * 16,
2499 2 * 16, 3 * 16, 6 * 16, 7 * 16,
2500 8 * 16, 9 * 16, 12 * 16, 13 * 16,
2501 10 * 16, 11 * 16, 14 * 16, 15 * 16
2502 };
2503 for (i = 0; i < 16; i++)
2504 dctcoef_set(h->mb + (p * 256 << pixel_shift),
2505 pixel_shift, dc_mapping[i],
2506 dctcoef_get(h->mb_luma_dc[p],
2507 pixel_shift, i));
2508 }
2509 }
2510 } else if (CONFIG_SVQ3_DECODER)
2511 ff_svq3_luma_dc_dequant_idct_c(h->mb + p * 256,
2512 h->mb_luma_dc[p], qscale);
2513 }
2514}
2515
2516static av_always_inline void hl_decode_mb_idct_luma(H264Context *h, int mb_type,
2517 int is_h264, int simple,
2518 int transform_bypass,
2519 int pixel_shift,
2520 int *block_offset,
2521 int linesize,
2522 uint8_t *dest_y, int p)
2523{
2524 void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
2525 int i;
2526 block_offset += 16 * p;
2527 if (!IS_INTRA4x4(mb_type)) {
2528 if (is_h264) {
2529 if (IS_INTRA16x16(mb_type)) {
2530 if (transform_bypass) {
2531 if (h->sps.profile_idc == 244 &&
2532 (h->intra16x16_pred_mode == VERT_PRED8x8 ||
2533 h->intra16x16_pred_mode == HOR_PRED8x8)) {
2534 h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset,
2535 h->mb + (p * 256 << pixel_shift),
2536 linesize);
2537 } else {
2538 for (i = 0; i < 16; i++)
2539 if (h->non_zero_count_cache[scan8[i + p * 16]] ||
2540 dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))
2541 h->h264dsp.h264_add_pixels4_clear(dest_y + block_offset[i],
2542 h->mb + (i * 16 + p * 256 << pixel_shift),
2543 linesize);
2544 }
2545 } else {
2546 h->h264dsp.h264_idct_add16intra(dest_y, block_offset,
2547 h->mb + (p * 256 << pixel_shift),
2548 linesize,
2549 h->non_zero_count_cache + p * 5 * 8);
2550 }
2551 } else if (h->cbp & 15) {
2552 if (transform_bypass) {
2553 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
2554 idct_add = IS_8x8DCT(mb_type) ? h->h264dsp.h264_add_pixels8_clear
2555 : h->h264dsp.h264_add_pixels4_clear;
2556 for (i = 0; i < 16; i += di)
2557 if (h->non_zero_count_cache[scan8[i + p * 16]])
2558 idct_add(dest_y + block_offset[i],
2559 h->mb + (i * 16 + p * 256 << pixel_shift),
2560 linesize);
2561 } else {
2562 if (IS_8x8DCT(mb_type))
2563 h->h264dsp.h264_idct8_add4(dest_y, block_offset,
2564 h->mb + (p * 256 << pixel_shift),
2565 linesize,
2566 h->non_zero_count_cache + p * 5 * 8);
2567 else
2568 h->h264dsp.h264_idct_add16(dest_y, block_offset,
2569 h->mb + (p * 256 << pixel_shift),
2570 linesize,
2571 h->non_zero_count_cache + p * 5 * 8);
2572 }
2573 }
2574 } else if (CONFIG_SVQ3_DECODER) {
2575 for (i = 0; i < 16; i++)
2576 if (h->non_zero_count_cache[scan8[i + p * 16]] || h->mb[i * 16 + p * 256]) {
2577 // FIXME benchmark weird rule, & below
2578 uint8_t *const ptr = dest_y + block_offset[i];
2579 ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize,
2580 h->qscale, IS_INTRA(mb_type) ? 1 : 0);
2581 }
2582 }
2583 }
2584}
2585
2586#define BITS 8
2587#define SIMPLE 1
2588#include "h264_mb_template.c"
2589
2590#undef BITS
2591#define BITS 16
2592#include "h264_mb_template.c"
2593
2594#undef SIMPLE
2595#define SIMPLE 0
2596#include "h264_mb_template.c"
2597
2598void ff_h264_hl_decode_mb(H264Context *h)
2599{
2600 const int mb_xy = h->mb_xy;
2601 const int mb_type = h->cur_pic.mb_type[mb_xy];
2602 int is_complex = CONFIG_SMALL || h->is_complex ||
2603 IS_INTRA_PCM(mb_type) || h->qscale == 0;
2604
2605 if (CHROMA444(h)) {
2606 if (is_complex || h->pixel_shift)
2607 hl_decode_mb_444_complex(h);
2608 else
2609 hl_decode_mb_444_simple_8(h);
2610 } else if (is_complex) {
2611 hl_decode_mb_complex(h);
2612 } else if (h->pixel_shift) {
2613 hl_decode_mb_simple_16(h);
2614 } else
2615 hl_decode_mb_simple_8(h);
2616}
2617
2618int ff_pred_weight_table(H264Context *h)
2619{
2620 int list, i;
2621 int luma_def, chroma_def;
2622
2623 h->use_weight = 0;
2624 h->use_weight_chroma = 0;
2625 h->luma_log2_weight_denom = get_ue_golomb(&h->gb);
2626 if (h->sps.chroma_format_idc)
2627 h->chroma_log2_weight_denom = get_ue_golomb(&h->gb);
2628 luma_def = 1 << h->luma_log2_weight_denom;
2629 chroma_def = 1 << h->chroma_log2_weight_denom;
2630
2631 for (list = 0; list < 2; list++) {
2632 h->luma_weight_flag[list] = 0;
2633 h->chroma_weight_flag[list] = 0;
2634 for (i = 0; i < h->ref_count[list]; i++) {
2635 int luma_weight_flag, chroma_weight_flag;
2636
2637 luma_weight_flag = get_bits1(&h->gb);
2638 if (luma_weight_flag) {
2639 h->luma_weight[i][list][0] = get_se_golomb(&h->gb);
2640 h->luma_weight[i][list][1] = get_se_golomb(&h->gb);
2641 if (h->luma_weight[i][list][0] != luma_def ||
2642 h->luma_weight[i][list][1] != 0) {
2643 h->use_weight = 1;
2644 h->luma_weight_flag[list] = 1;
2645 }
2646 } else {
2647 h->luma_weight[i][list][0] = luma_def;
2648 h->luma_weight[i][list][1] = 0;
2649 }
2650
2651 if (h->sps.chroma_format_idc) {
2652 chroma_weight_flag = get_bits1(&h->gb);
2653 if (chroma_weight_flag) {
2654 int j;
2655 for (j = 0; j < 2; j++) {
2656 h->chroma_weight[i][list][j][0] = get_se_golomb(&h->gb);
2657 h->chroma_weight[i][list][j][1] = get_se_golomb(&h->gb);
2658 if (h->chroma_weight[i][list][j][0] != chroma_def ||
2659 h->chroma_weight[i][list][j][1] != 0) {
2660 h->use_weight_chroma = 1;
2661 h->chroma_weight_flag[list] = 1;
2662 }
2663 }
2664 } else {
2665 int j;
2666 for (j = 0; j < 2; j++) {
2667 h->chroma_weight[i][list][j][0] = chroma_def;
2668 h->chroma_weight[i][list][j][1] = 0;
2669 }
2670 }
2671 }
2672 }
2673 if (h->slice_type_nos != AV_PICTURE_TYPE_B)
2674 break;
2675 }
2676 h->use_weight = h->use_weight || h->use_weight_chroma;
2677 return 0;
2678}
2679
2680/**
2681 * Initialize implicit_weight table.
2682 * @param field 0/1 initialize the weight for interlaced MBAFF
2683 * -1 initializes the rest
2684 */
2685static void implicit_weight_table(H264Context *h, int field)
2686{
2687 int ref0, ref1, i, cur_poc, ref_start, ref_count0, ref_count1;
2688
2689 for (i = 0; i < 2; i++) {
2690 h->luma_weight_flag[i] = 0;
2691 h->chroma_weight_flag[i] = 0;
2692 }
2693
2694 if (field < 0) {
2695 if (h->picture_structure == PICT_FRAME) {
2696 cur_poc = h->cur_pic_ptr->poc;
2697 } else {
2698 cur_poc = h->cur_pic_ptr->field_poc[h->picture_structure - 1];
2699 }
2700 if (h->ref_count[0] == 1 && h->ref_count[1] == 1 && !FRAME_MBAFF(h) &&
2701 h->ref_list[0][0].poc + h->ref_list[1][0].poc == 2 * cur_poc) {
2702 h->use_weight = 0;
2703 h->use_weight_chroma = 0;
2704 return;
2705 }
2706 ref_start = 0;
2707 ref_count0 = h->ref_count[0];
2708 ref_count1 = h->ref_count[1];
2709 } else {
2710 cur_poc = h->cur_pic_ptr->field_poc[field];
2711 ref_start = 16;
2712 ref_count0 = 16 + 2 * h->ref_count[0];
2713 ref_count1 = 16 + 2 * h->ref_count[1];
2714 }
2715
2716 h->use_weight = 2;
2717 h->use_weight_chroma = 2;
2718 h->luma_log2_weight_denom = 5;
2719 h->chroma_log2_weight_denom = 5;
2720
2721 for (ref0 = ref_start; ref0 < ref_count0; ref0++) {
2722 int poc0 = h->ref_list[0][ref0].poc;
2723 for (ref1 = ref_start; ref1 < ref_count1; ref1++) {
2724 int w = 32;
2725 if (!h->ref_list[0][ref0].long_ref && !h->ref_list[1][ref1].long_ref) {
2726 int poc1 = h->ref_list[1][ref1].poc;
2727 int td = av_clip(poc1 - poc0, -128, 127);
2728 if (td) {
2729 int tb = av_clip(cur_poc - poc0, -128, 127);
2730 int tx = (16384 + (FFABS(td) >> 1)) / td;
2731 int dist_scale_factor = (tb * tx + 32) >> 8;
2732 if (dist_scale_factor >= -64 && dist_scale_factor <= 128)
2733 w = 64 - dist_scale_factor;
2734 }
2735 }
2736 if (field < 0) {
2737 h->implicit_weight[ref0][ref1][0] =
2738 h->implicit_weight[ref0][ref1][1] = w;
2739 } else {
2740 h->implicit_weight[ref0][ref1][field] = w;
2741 }
2742 }
2743 }
2744}
2745
2746/**
2747 * instantaneous decoder refresh.
2748 */
2749static void idr(H264Context *h)
2750{
2751 int i;
2752 ff_h264_remove_all_refs(h);
2753 h->prev_frame_num = 0;
2754 h->prev_frame_num_offset = 0;
2755 h->prev_poc_msb = 1<<16;
2756 h->prev_poc_lsb = 0;
2757 for (i = 0; i < MAX_DELAYED_PIC_COUNT; i++)
2758 h->last_pocs[i] = INT_MIN;
2759}
2760
2761/* forget old pics after a seek */
2762static void flush_change(H264Context *h)
2763{
2764 int i, j;
2765
2766 h->outputed_poc = h->next_outputed_poc = INT_MIN;
2767 h->prev_interlaced_frame = 1;
2768 idr(h);
2769
2770 h->prev_frame_num = -1;
2771 if (h->cur_pic_ptr) {
2772 h->cur_pic_ptr->reference = 0;
2773 for (j=i=0; h->delayed_pic[i]; i++)
2774 if (h->delayed_pic[i] != h->cur_pic_ptr)
2775 h->delayed_pic[j++] = h->delayed_pic[i];
2776 h->delayed_pic[j] = NULL;
2777 }
2778 h->first_field = 0;
2779 memset(h->ref_list[0], 0, sizeof(h->ref_list[0]));
2780 memset(h->ref_list[1], 0, sizeof(h->ref_list[1]));
2781 memset(h->default_ref_list[0], 0, sizeof(h->default_ref_list[0]));
2782 memset(h->default_ref_list[1], 0, sizeof(h->default_ref_list[1]));
2783 ff_h264_reset_sei(h);
2784 h->recovery_frame= -1;
2785 h->sync= 0;
2786 h->list_count = 0;
2787 h->current_slice = 0;
2788 h->mmco_reset = 1;
2789}
2790
2791/* forget old pics after a seek */
2792static void flush_dpb(AVCodecContext *avctx)
2793{
2794 H264Context *h = avctx->priv_data;
2795 int i;
2796
2797 for (i = 0; i <= MAX_DELAYED_PIC_COUNT; i++) {
2798 if (h->delayed_pic[i])
2799 h->delayed_pic[i]->reference = 0;
2800 h->delayed_pic[i] = NULL;
2801 }
2802
2803 flush_change(h);
2804
2805 if (h->DPB)
2806 for (i = 0; i < MAX_PICTURE_COUNT; i++)
2807 unref_picture(h, &h->DPB[i]);
2808 h->cur_pic_ptr = NULL;
2809 unref_picture(h, &h->cur_pic);
2810
2811 h->mb_x = h->mb_y = 0;
2812
2813 h->parse_context.state = -1;
2814 h->parse_context.frame_start_found = 0;
2815 h->parse_context.overread = 0;
2816 h->parse_context.overread_index = 0;
2817 h->parse_context.index = 0;
2818 h->parse_context.last_index = 0;
2819}
2820
2821int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc)
2822{
2823 const int max_frame_num = 1 << h->sps.log2_max_frame_num;
2824 int field_poc[2];
2825
2826 h->frame_num_offset = h->prev_frame_num_offset;
2827 if (h->frame_num < h->prev_frame_num)
2828 h->frame_num_offset += max_frame_num;
2829
2830 if (h->sps.poc_type == 0) {
2831 const int max_poc_lsb = 1 << h->sps.log2_max_poc_lsb;
2832
2833 if (h->poc_lsb < h->prev_poc_lsb &&
2834 h->prev_poc_lsb - h->poc_lsb >= max_poc_lsb / 2)
2835 h->poc_msb = h->prev_poc_msb + max_poc_lsb;
2836 else if (h->poc_lsb > h->prev_poc_lsb &&
2837 h->prev_poc_lsb - h->poc_lsb < -max_poc_lsb / 2)
2838 h->poc_msb = h->prev_poc_msb - max_poc_lsb;
2839 else
2840 h->poc_msb = h->prev_poc_msb;
2841 field_poc[0] =
2842 field_poc[1] = h->poc_msb + h->poc_lsb;
2843 if (h->picture_structure == PICT_FRAME)
2844 field_poc[1] += h->delta_poc_bottom;
2845 } else if (h->sps.poc_type == 1) {
2846 int abs_frame_num, expected_delta_per_poc_cycle, expectedpoc;
2847 int i;
2848
2849 if (h->sps.poc_cycle_length != 0)
2850 abs_frame_num = h->frame_num_offset + h->frame_num;
2851 else
2852 abs_frame_num = 0;
2853
2854 if (h->nal_ref_idc == 0 && abs_frame_num > 0)
2855 abs_frame_num--;
2856
2857 expected_delta_per_poc_cycle = 0;
2858 for (i = 0; i < h->sps.poc_cycle_length; i++)
2859 // FIXME integrate during sps parse
2860 expected_delta_per_poc_cycle += h->sps.offset_for_ref_frame[i];
2861
2862 if (abs_frame_num > 0) {
2863 int poc_cycle_cnt = (abs_frame_num - 1) / h->sps.poc_cycle_length;
2864 int frame_num_in_poc_cycle = (abs_frame_num - 1) % h->sps.poc_cycle_length;
2865
2866 expectedpoc = poc_cycle_cnt * expected_delta_per_poc_cycle;
2867 for (i = 0; i <= frame_num_in_poc_cycle; i++)
2868 expectedpoc = expectedpoc + h->sps.offset_for_ref_frame[i];
2869 } else
2870 expectedpoc = 0;
2871
2872 if (h->nal_ref_idc == 0)
2873 expectedpoc = expectedpoc + h->sps.offset_for_non_ref_pic;
2874
2875 field_poc[0] = expectedpoc + h->delta_poc[0];
2876 field_poc[1] = field_poc[0] + h->sps.offset_for_top_to_bottom_field;
2877
2878 if (h->picture_structure == PICT_FRAME)
2879 field_poc[1] += h->delta_poc[1];
2880 } else {
2881 int poc = 2 * (h->frame_num_offset + h->frame_num);
2882
2883 if (!h->nal_ref_idc)
2884 poc--;
2885
2886 field_poc[0] = poc;
2887 field_poc[1] = poc;
2888 }
2889
2890 if (h->picture_structure != PICT_BOTTOM_FIELD)
2891 pic_field_poc[0] = field_poc[0];
2892 if (h->picture_structure != PICT_TOP_FIELD)
2893 pic_field_poc[1] = field_poc[1];
2894 *pic_poc = FFMIN(pic_field_poc[0], pic_field_poc[1]);
2895
2896 return 0;
2897}
2898
2899/**
2900 * initialize scan tables
2901 */
2902static void init_scan_tables(H264Context *h)
2903{
2904 int i;
2905 for (i = 0; i < 16; i++) {
2906#define T(x) (x >> 2) | ((x << 2) & 0xF)
2907 h->zigzag_scan[i] = T(zigzag_scan[i]);
2908 h->field_scan[i] = T(field_scan[i]);
2909#undef T
2910 }
2911 for (i = 0; i < 64; i++) {
2912#define T(x) (x >> 3) | ((x & 7) << 3)
2913 h->zigzag_scan8x8[i] = T(ff_zigzag_direct[i]);
2914 h->zigzag_scan8x8_cavlc[i] = T(zigzag_scan8x8_cavlc[i]);
2915 h->field_scan8x8[i] = T(field_scan8x8[i]);
2916 h->field_scan8x8_cavlc[i] = T(field_scan8x8_cavlc[i]);
2917#undef T
2918 }
2919 if (h->sps.transform_bypass) { // FIXME same ugly
2920 memcpy(h->zigzag_scan_q0 , zigzag_scan , sizeof(h->zigzag_scan_q0 ));
2921 memcpy(h->zigzag_scan8x8_q0 , ff_zigzag_direct , sizeof(h->zigzag_scan8x8_q0 ));
2922 memcpy(h->zigzag_scan8x8_cavlc_q0 , zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
2923 memcpy(h->field_scan_q0 , field_scan , sizeof(h->field_scan_q0 ));
2924 memcpy(h->field_scan8x8_q0 , field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
2925 memcpy(h->field_scan8x8_cavlc_q0 , field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
2926 } else {
2927 memcpy(h->zigzag_scan_q0 , h->zigzag_scan , sizeof(h->zigzag_scan_q0 ));
2928 memcpy(h->zigzag_scan8x8_q0 , h->zigzag_scan8x8 , sizeof(h->zigzag_scan8x8_q0 ));
2929 memcpy(h->zigzag_scan8x8_cavlc_q0 , h->zigzag_scan8x8_cavlc , sizeof(h->zigzag_scan8x8_cavlc_q0));
2930 memcpy(h->field_scan_q0 , h->field_scan , sizeof(h->field_scan_q0 ));
2931 memcpy(h->field_scan8x8_q0 , h->field_scan8x8 , sizeof(h->field_scan8x8_q0 ));
2932 memcpy(h->field_scan8x8_cavlc_q0 , h->field_scan8x8_cavlc , sizeof(h->field_scan8x8_cavlc_q0 ));
2933 }
2934}
2935
2936static int field_end(H264Context *h, int in_setup)
2937{
2938 AVCodecContext *const avctx = h->avctx;
2939 int err = 0;
2940 h->mb_y = 0;
2941
2942 if (CONFIG_H264_VDPAU_DECODER &&
2943 h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
2944 ff_vdpau_h264_set_reference_frames(h);
2945
2946 if (in_setup || !(avctx->active_thread_type & FF_THREAD_FRAME)) {
2947 if (!h->droppable) {
2948 err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
2949 h->prev_poc_msb = h->poc_msb;
2950 h->prev_poc_lsb = h->poc_lsb;
2951 }
2952 h->prev_frame_num_offset = h->frame_num_offset;
2953 h->prev_frame_num = h->frame_num;
2954 h->outputed_poc = h->next_outputed_poc;
2955 }
2956
2957 if (avctx->hwaccel) {
2958 if (avctx->hwaccel->end_frame(avctx) < 0)
2959 av_log(avctx, AV_LOG_ERROR,
2960 "hardware accelerator failed to decode picture\n");
2961 }
2962
2963 if (CONFIG_H264_VDPAU_DECODER &&
2964 h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
2965 ff_vdpau_h264_picture_complete(h);
2966
2967 /*
2968 * FIXME: Error handling code does not seem to support interlaced
2969 * when slices span multiple rows
2970 * The ff_er_add_slice calls don't work right for bottom
2971 * fields; they cause massive erroneous error concealing
2972 * Error marking covers both fields (top and bottom).
2973 * This causes a mismatched s->error_count
2974 * and a bad error table. Further, the error count goes to
2975 * INT_MAX when called for bottom field, because mb_y is
2976 * past end by one (callers fault) and resync_mb_y != 0
2977 * causes problems for the first MB line, too.
2978 */
2979 if (CONFIG_ERROR_RESILIENCE &&
2980 !FIELD_PICTURE(h) && h->current_slice && !h->sps.new) {
2981 h->er.cur_pic = h->cur_pic_ptr;
2982 ff_er_frame_end(&h->er);
2983 }
2984 if (!in_setup && !h->droppable)
2985 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
2986 h->picture_structure == PICT_BOTTOM_FIELD);
2987 emms_c();
2988
2989 h->current_slice = 0;
2990
2991 return err;
2992}
2993
2994/**
2995 * Replicate H264 "master" context to thread contexts.
2996 */
2997static int clone_slice(H264Context *dst, H264Context *src)
2998{
2999 memcpy(dst->block_offset, src->block_offset, sizeof(dst->block_offset));
3000 dst->cur_pic_ptr = src->cur_pic_ptr;
3001 dst->cur_pic = src->cur_pic;
3002 dst->linesize = src->linesize;
3003 dst->uvlinesize = src->uvlinesize;
3004 dst->first_field = src->first_field;
3005
3006 dst->prev_poc_msb = src->prev_poc_msb;
3007 dst->prev_poc_lsb = src->prev_poc_lsb;
3008 dst->prev_frame_num_offset = src->prev_frame_num_offset;
3009 dst->prev_frame_num = src->prev_frame_num;
3010 dst->short_ref_count = src->short_ref_count;
3011
3012 memcpy(dst->short_ref, src->short_ref, sizeof(dst->short_ref));
3013 memcpy(dst->long_ref, src->long_ref, sizeof(dst->long_ref));
3014 memcpy(dst->default_ref_list, src->default_ref_list, sizeof(dst->default_ref_list));
3015
3016 memcpy(dst->dequant4_coeff, src->dequant4_coeff, sizeof(src->dequant4_coeff));
3017 memcpy(dst->dequant8_coeff, src->dequant8_coeff, sizeof(src->dequant8_coeff));
3018
3019 return 0;
3020}
3021
3022/**
3023 * Compute profile from profile_idc and constraint_set?_flags.
3024 *
3025 * @param sps SPS
3026 *
3027 * @return profile as defined by FF_PROFILE_H264_*
3028 */
3029int ff_h264_get_profile(SPS *sps)
3030{
3031 int profile = sps->profile_idc;
3032
3033 switch (sps->profile_idc) {
3034 case FF_PROFILE_H264_BASELINE:
3035 // constraint_set1_flag set to 1
3036 profile |= (sps->constraint_set_flags & 1 << 1) ? FF_PROFILE_H264_CONSTRAINED : 0;
3037 break;
3038 case FF_PROFILE_H264_HIGH_10:
3039 case FF_PROFILE_H264_HIGH_422:
3040 case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
3041 // constraint_set3_flag set to 1
3042 profile |= (sps->constraint_set_flags & 1 << 3) ? FF_PROFILE_H264_INTRA : 0;
3043 break;
3044 }
3045
3046 return profile;
3047}
3048
3049static int h264_set_parameter_from_sps(H264Context *h)
3050{
3051 if (h->flags & CODEC_FLAG_LOW_DELAY ||
3052 (h->sps.bitstream_restriction_flag &&
3053 !h->sps.num_reorder_frames)) {
3054 if (h->avctx->has_b_frames > 1 || h->delayed_pic[0])
3055 av_log(h->avctx, AV_LOG_WARNING, "Delayed frames seen. "
3056 "Reenabling low delay requires a codec flush.\n");
3057 else
3058 h->low_delay = 1;
3059 }
3060
3061 if (h->avctx->has_b_frames < 2)
3062 h->avctx->has_b_frames = !h->low_delay;
3063
3064 if (h->sps.bit_depth_luma != h->sps.bit_depth_chroma) {
3065 avpriv_request_sample(h->avctx,
3066 "Different chroma and luma bit depth");
3067 return AVERROR_PATCHWELCOME;
3068 }
3069
3070 if (h->avctx->bits_per_raw_sample != h->sps.bit_depth_luma ||
3071 h->cur_chroma_format_idc != h->sps.chroma_format_idc) {
3072 if (h->avctx->codec &&
3073 h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU &&
3074 (h->sps.bit_depth_luma != 8 || h->sps.chroma_format_idc > 1)) {
3075 av_log(h->avctx, AV_LOG_ERROR,
3076 "VDPAU decoding does not support video colorspace.\n");
3077 return AVERROR_INVALIDDATA;
3078 }
3079 if (h->sps.bit_depth_luma >= 8 && h->sps.bit_depth_luma <= 14 &&
3080 h->sps.bit_depth_luma != 11 && h->sps.bit_depth_luma != 13) {
3081 h->avctx->bits_per_raw_sample = h->sps.bit_depth_luma;
3082 h->cur_chroma_format_idc = h->sps.chroma_format_idc;
3083 h->pixel_shift = h->sps.bit_depth_luma > 8;
3084
3085 ff_h264dsp_init(&h->h264dsp, h->sps.bit_depth_luma,
3086 h->sps.chroma_format_idc);
3087 ff_h264chroma_init(&h->h264chroma, h->sps.bit_depth_chroma);
3088 ff_h264qpel_init(&h->h264qpel, h->sps.bit_depth_luma);
3089 ff_h264_pred_init(&h->hpc, h->avctx->codec_id, h->sps.bit_depth_luma,
3090 h->sps.chroma_format_idc);
3091
3092 if (CONFIG_ERROR_RESILIENCE)
3093 ff_dsputil_init(&h->dsp, h->avctx);
3094 ff_videodsp_init(&h->vdsp, h->sps.bit_depth_luma);
3095 } else {
3096 av_log(h->avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n",
3097 h->sps.bit_depth_luma);
3098 return AVERROR_INVALIDDATA;
3099 }
3100 }
3101 return 0;
3102}
3103
3104static enum AVPixelFormat get_pixel_format(H264Context *h, int force_callback)
3105{
3106 switch (h->sps.bit_depth_luma) {
3107 case 9:
3108 if (CHROMA444(h)) {
3109 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
3110 return AV_PIX_FMT_GBRP9;
3111 } else
3112 return AV_PIX_FMT_YUV444P9;
3113 } else if (CHROMA422(h))
3114 return AV_PIX_FMT_YUV422P9;
3115 else
3116 return AV_PIX_FMT_YUV420P9;
3117 break;
3118 case 10:
3119 if (CHROMA444(h)) {
3120 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
3121 return AV_PIX_FMT_GBRP10;
3122 } else
3123 return AV_PIX_FMT_YUV444P10;
3124 } else if (CHROMA422(h))
3125 return AV_PIX_FMT_YUV422P10;
3126 else
3127 return AV_PIX_FMT_YUV420P10;
3128 break;
3129 case 12:
3130 if (CHROMA444(h)) {
3131 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
3132 return AV_PIX_FMT_GBRP12;
3133 } else
3134 return AV_PIX_FMT_YUV444P12;
3135 } else if (CHROMA422(h))
3136 return AV_PIX_FMT_YUV422P12;
3137 else
3138 return AV_PIX_FMT_YUV420P12;
3139 break;
3140 case 14:
3141 if (CHROMA444(h)) {
3142 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
3143 return AV_PIX_FMT_GBRP14;
3144 } else
3145 return AV_PIX_FMT_YUV444P14;
3146 } else if (CHROMA422(h))
3147 return AV_PIX_FMT_YUV422P14;
3148 else
3149 return AV_PIX_FMT_YUV420P14;
3150 break;
3151 case 8:
3152 if (CHROMA444(h)) {
3153 if (h->avctx->colorspace == AVCOL_SPC_RGB) {
3154 av_log(h->avctx, AV_LOG_DEBUG, "Detected GBR colorspace.\n");
3155 return AV_PIX_FMT_GBR24P;
3156 } else if (h->avctx->colorspace == AVCOL_SPC_YCGCO) {
3157 av_log(h->avctx, AV_LOG_WARNING, "Detected unsupported YCgCo colorspace.\n");
3158 }
3159 return h->avctx->color_range == AVCOL_RANGE_JPEG ? AV_PIX_FMT_YUVJ444P
3160 : AV_PIX_FMT_YUV444P;
3161 } else if (CHROMA422(h)) {
3162 return h->avctx->color_range == AVCOL_RANGE_JPEG ? AV_PIX_FMT_YUVJ422P
3163 : AV_PIX_FMT_YUV422P;
3164 } else {
3165 int i;
3166 const enum AVPixelFormat * fmt = h->avctx->codec->pix_fmts ?
3167 h->avctx->codec->pix_fmts :
3168 h->avctx->color_range == AVCOL_RANGE_JPEG ?
3169 h264_hwaccel_pixfmt_list_jpeg_420 :
3170 h264_hwaccel_pixfmt_list_420;
3171
3172 for (i=0; fmt[i] != AV_PIX_FMT_NONE; i++)
3173 if (fmt[i] == h->avctx->pix_fmt && !force_callback)
3174 return fmt[i];
3175 return ff_thread_get_format(h->avctx, fmt);
3176 }
3177 break;
3178 default:
3179 av_log(h->avctx, AV_LOG_ERROR,
3180 "Unsupported bit depth: %d\n", h->sps.bit_depth_luma);
3181 return AVERROR_INVALIDDATA;
3182 }
3183}
3184
3185/* export coded and cropped frame dimensions to AVCodecContext */
3186static int init_dimensions(H264Context *h)
3187{
3188 int width = h->width - (h->sps.crop_right + h->sps.crop_left);
3189 int height = h->height - (h->sps.crop_top + h->sps.crop_bottom);
3190 av_assert0(h->sps.crop_right + h->sps.crop_left < (unsigned)h->width);
3191 av_assert0(h->sps.crop_top + h->sps.crop_bottom < (unsigned)h->height);
3192
3193 /* handle container cropping */
3194 if (!h->sps.crop &&
3195 FFALIGN(h->avctx->width, 16) == h->width &&
3196 FFALIGN(h->avctx->height, 16) == h->height) {
3197 width = h->avctx->width;
3198 height = h->avctx->height;
3199 }
3200
3201 if (width <= 0 || height <= 0) {
3202 av_log(h->avctx, AV_LOG_ERROR, "Invalid cropped dimensions: %dx%d.\n",
3203 width, height);
3204 if (h->avctx->err_recognition & AV_EF_EXPLODE)
3205 return AVERROR_INVALIDDATA;
3206
3207 av_log(h->avctx, AV_LOG_WARNING, "Ignoring cropping information.\n");
3208 h->sps.crop_bottom = h->sps.crop_top = h->sps.crop_right = h->sps.crop_left = 0;
3209 h->sps.crop = 0;
3210
3211 width = h->width;
3212 height = h->height;
3213 }
3214
3215 h->avctx->coded_width = h->width;
3216 h->avctx->coded_height = h->height;
3217 h->avctx->width = width;
3218 h->avctx->height = height;
3219
3220 return 0;
3221}
3222
3223static int h264_slice_header_init(H264Context *h, int reinit)
3224{
3225 int nb_slices = (HAVE_THREADS &&
3226 h->avctx->active_thread_type & FF_THREAD_SLICE) ?
3227 h->avctx->thread_count : 1;
3228 int i, ret;
3229
3230 h->avctx->sample_aspect_ratio = h->sps.sar;
3231 av_assert0(h->avctx->sample_aspect_ratio.den);
3232 av_pix_fmt_get_chroma_sub_sample(h->avctx->pix_fmt,
3233 &h->chroma_x_shift, &h->chroma_y_shift);
3234
3235 if (h->sps.timing_info_present_flag) {
3236 int64_t den = h->sps.time_scale;
3237 if (h->x264_build < 44U)
3238 den *= 2;
3239 av_reduce(&h->avctx->time_base.num, &h->avctx->time_base.den,
3240 h->sps.num_units_in_tick, den, 1 << 30);
3241 }
3242
3243 h->avctx->hwaccel = ff_find_hwaccel(h->avctx->codec->id, h->avctx->pix_fmt);
3244
3245 if (reinit)
3246 free_tables(h, 0);
3247 h->first_field = 0;
3248 h->prev_interlaced_frame = 1;
3249
3250 init_scan_tables(h);
3251 ret = ff_h264_alloc_tables(h);
3252 if (ret < 0) {
3253 av_log(h->avctx, AV_LOG_ERROR,
3254 "Could not allocate memory for h264\n");
3255 return ret;
3256 }
3257
3258 if (nb_slices > MAX_THREADS || (nb_slices > h->mb_height && h->mb_height)) {
3259 int max_slices;
3260 if (h->mb_height)
3261 max_slices = FFMIN(MAX_THREADS, h->mb_height);
3262 else
3263 max_slices = MAX_THREADS;
3264 av_log(h->avctx, AV_LOG_WARNING, "too many threads/slices (%d),"
3265 " reducing to %d\n", nb_slices, max_slices);
3266 nb_slices = max_slices;
3267 }
3268 h->slice_context_count = nb_slices;
3269
3270 if (!HAVE_THREADS || !(h->avctx->active_thread_type & FF_THREAD_SLICE)) {
3271 ret = context_init(h);
3272 if (ret < 0) {
3273 av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
3274 return ret;
3275 }
3276 } else {
3277 for (i = 1; i < h->slice_context_count; i++) {
3278 H264Context *c;
3279 c = h->thread_context[i] = av_mallocz(sizeof(H264Context));
3280 if (!c)
3281 return AVERROR(ENOMEM);
3282 c->avctx = h->avctx;
3283 if (CONFIG_ERROR_RESILIENCE) {
3284 c->dsp = h->dsp;
3285 }
3286 c->vdsp = h->vdsp;
3287 c->h264dsp = h->h264dsp;
3288 c->h264qpel = h->h264qpel;
3289 c->h264chroma = h->h264chroma;
3290 c->sps = h->sps;
3291 c->pps = h->pps;
3292 c->pixel_shift = h->pixel_shift;
3293 c->cur_chroma_format_idc = h->cur_chroma_format_idc;
3294 c->width = h->width;
3295 c->height = h->height;
3296 c->linesize = h->linesize;
3297 c->uvlinesize = h->uvlinesize;
3298 c->chroma_x_shift = h->chroma_x_shift;
3299 c->chroma_y_shift = h->chroma_y_shift;
3300 c->qscale = h->qscale;
3301 c->droppable = h->droppable;
3302 c->data_partitioning = h->data_partitioning;
3303 c->low_delay = h->low_delay;
3304 c->mb_width = h->mb_width;
3305 c->mb_height = h->mb_height;
3306 c->mb_stride = h->mb_stride;
3307 c->mb_num = h->mb_num;
3308 c->flags = h->flags;
3309 c->workaround_bugs = h->workaround_bugs;
3310 c->pict_type = h->pict_type;
3311
3312 init_scan_tables(c);
3313 clone_tables(c, h, i);
3314 c->context_initialized = 1;
3315 }
3316
3317 for (i = 0; i < h->slice_context_count; i++)
3318 if ((ret = context_init(h->thread_context[i])) < 0) {
3319 av_log(h->avctx, AV_LOG_ERROR, "context_init() failed.\n");
3320 return ret;
3321 }
3322 }
3323
3324 h->context_initialized = 1;
3325
3326 return 0;
3327}
3328
3329int ff_set_ref_count(H264Context *h)
3330{
3331 int num_ref_idx_active_override_flag;
3332
3333 // set defaults, might be overridden a few lines later
3334 h->ref_count[0] = h->pps.ref_count[0];
3335 h->ref_count[1] = h->pps.ref_count[1];
3336
3337 if (h->slice_type_nos != AV_PICTURE_TYPE_I) {
3338 unsigned max[2];
3339 max[0] = max[1] = h->picture_structure == PICT_FRAME ? 15 : 31;
3340
3341 if (h->slice_type_nos == AV_PICTURE_TYPE_B)
3342 h->direct_spatial_mv_pred = get_bits1(&h->gb);
3343 num_ref_idx_active_override_flag = get_bits1(&h->gb);
3344
3345 if (num_ref_idx_active_override_flag) {
3346 h->ref_count[0] = get_ue_golomb(&h->gb) + 1;
3347 if (h->slice_type_nos == AV_PICTURE_TYPE_B) {
3348 h->ref_count[1] = get_ue_golomb(&h->gb) + 1;
3349 } else
3350 // full range is spec-ok in this case, even for frames
3351 h->ref_count[1] = 1;
3352 }
3353
3354 if (h->ref_count[0]-1 > max[0] || h->ref_count[1]-1 > max[1]){
3355 av_log(h->avctx, AV_LOG_ERROR, "reference overflow %u > %u or %u > %u\n", h->ref_count[0]-1, max[0], h->ref_count[1]-1, max[1]);
3356 h->ref_count[0] = h->ref_count[1] = 0;
3357 return AVERROR_INVALIDDATA;
3358 }
3359
3360 if (h->slice_type_nos == AV_PICTURE_TYPE_B)
3361 h->list_count = 2;
3362 else
3363 h->list_count = 1;
3364 } else {
3365 h->list_count = 0;
3366 h->ref_count[0] = h->ref_count[1] = 0;
3367 }
3368
3369 return 0;
3370}
3371
3372/**
3373 * Decode a slice header.
3374 * This will also call ff_MPV_common_init() and frame_start() as needed.
3375 *
3376 * @param h h264context
3377 * @param h0 h264 master context (differs from 'h' when doing sliced based
3378 * parallel decoding)
3379 *
3380 * @return 0 if okay, <0 if an error occurred, 1 if decoding must not be multithreaded
3381 */
3382static int decode_slice_header(H264Context *h, H264Context *h0)
3383{
3384 unsigned int first_mb_in_slice;
3385 unsigned int pps_id;
3386 int ret;
3387 unsigned int slice_type, tmp, i, j;
3388 int last_pic_structure, last_pic_droppable;
3389 int must_reinit;
3390 int needs_reinit = 0;
3391 int field_pic_flag, bottom_field_flag;
3392
3393 h->me.qpel_put = h->h264qpel.put_h264_qpel_pixels_tab;
3394 h->me.qpel_avg = h->h264qpel.avg_h264_qpel_pixels_tab;
3395
3396 first_mb_in_slice = get_ue_golomb_long(&h->gb);
3397
3398 if (first_mb_in_slice == 0) { // FIXME better field boundary detection
3399 if (h0->current_slice && FIELD_PICTURE(h)) {
3400 field_end(h, 1);
3401 }
3402
3403 h0->current_slice = 0;
3404 if (!h0->first_field) {
3405 if (h->cur_pic_ptr && !h->droppable) {
3406 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
3407 h->picture_structure == PICT_BOTTOM_FIELD);
3408 }
3409 h->cur_pic_ptr = NULL;
3410 }
3411 }
3412
3413 slice_type = get_ue_golomb_31(&h->gb);
3414 if (slice_type > 9) {
3415 av_log(h->avctx, AV_LOG_ERROR,
3416 "slice type too large (%d) at %d %d\n",
3417 slice_type, h->mb_x, h->mb_y);
3418 return AVERROR_INVALIDDATA;
3419 }
3420 if (slice_type > 4) {
3421 slice_type -= 5;
3422 h->slice_type_fixed = 1;
3423 } else
3424 h->slice_type_fixed = 0;
3425
3426 slice_type = golomb_to_pict_type[slice_type];
3427 h->slice_type = slice_type;
3428 h->slice_type_nos = slice_type & 3;
3429
3430 // to make a few old functions happy, it's wrong though
3431 h->pict_type = h->slice_type;
3432
3433 pps_id = get_ue_golomb(&h->gb);
3434 if (pps_id >= MAX_PPS_COUNT) {
3435 av_log(h->avctx, AV_LOG_ERROR, "pps_id %d out of range\n", pps_id);
3436 return AVERROR_INVALIDDATA;
3437 }
3438 if (!h0->pps_buffers[pps_id]) {
3439 av_log(h->avctx, AV_LOG_ERROR,
3440 "non-existing PPS %u referenced\n",
3441 pps_id);
3442 return AVERROR_INVALIDDATA;
3443 }
3444 h->pps = *h0->pps_buffers[pps_id];
3445
3446 if (!h0->sps_buffers[h->pps.sps_id]) {
3447 av_log(h->avctx, AV_LOG_ERROR,
3448 "non-existing SPS %u referenced\n",
3449 h->pps.sps_id);
3450 return AVERROR_INVALIDDATA;
3451 }
3452
3453 if (h->pps.sps_id != h->current_sps_id ||
3454 h0->sps_buffers[h->pps.sps_id]->new) {
3455 h0->sps_buffers[h->pps.sps_id]->new = 0;
3456
3457 h->current_sps_id = h->pps.sps_id;
3458 h->sps = *h0->sps_buffers[h->pps.sps_id];
3459
3460 if (h->mb_width != h->sps.mb_width ||
3461 h->mb_height != h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag) ||
3462 h->avctx->bits_per_raw_sample != h->sps.bit_depth_luma ||
3463 h->cur_chroma_format_idc != h->sps.chroma_format_idc
3464 )
3465 needs_reinit = 1;
3466
3467 if (h->bit_depth_luma != h->sps.bit_depth_luma ||
3468 h->chroma_format_idc != h->sps.chroma_format_idc) {
3469 h->bit_depth_luma = h->sps.bit_depth_luma;
3470 h->chroma_format_idc = h->sps.chroma_format_idc;
3471 needs_reinit = 1;
3472 }
3473 if ((ret = h264_set_parameter_from_sps(h)) < 0)
3474 return ret;
3475 }
3476
3477 h->avctx->profile = ff_h264_get_profile(&h->sps);
3478 h->avctx->level = h->sps.level_idc;
3479 h->avctx->refs = h->sps.ref_frame_count;
3480
3481 must_reinit = (h->context_initialized &&
3482 ( 16*h->sps.mb_width != h->avctx->coded_width
3483 || 16*h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag) != h->avctx->coded_height
3484 || h->avctx->bits_per_raw_sample != h->sps.bit_depth_luma
3485 || h->cur_chroma_format_idc != h->sps.chroma_format_idc
3486 || av_cmp_q(h->sps.sar, h->avctx->sample_aspect_ratio)
3487 || h->mb_width != h->sps.mb_width
3488 || h->mb_height != h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag)
3489 ));
3490 if (h0->avctx->pix_fmt != get_pixel_format(h0, 0))
3491 must_reinit = 1;
3492
3493 h->mb_width = h->sps.mb_width;
3494 h->mb_height = h->sps.mb_height * (2 - h->sps.frame_mbs_only_flag);
3495 h->mb_num = h->mb_width * h->mb_height;
3496 h->mb_stride = h->mb_width + 1;
3497
3498 h->b_stride = h->mb_width * 4;
3499
3500 h->chroma_y_shift = h->sps.chroma_format_idc <= 1; // 400 uses yuv420p
3501
3502 h->width = 16 * h->mb_width;
3503 h->height = 16 * h->mb_height;
3504
3505 ret = init_dimensions(h);
3506 if (ret < 0)
3507 return ret;
3508
3509 if (h->sps.video_signal_type_present_flag) {
3510 h->avctx->color_range = h->sps.full_range>0 ? AVCOL_RANGE_JPEG
3511 : AVCOL_RANGE_MPEG;
3512 if (h->sps.colour_description_present_flag) {
3513 if (h->avctx->colorspace != h->sps.colorspace)
3514 needs_reinit = 1;
3515 h->avctx->color_primaries = h->sps.color_primaries;
3516 h->avctx->color_trc = h->sps.color_trc;
3517 h->avctx->colorspace = h->sps.colorspace;
3518 }
3519 }
3520
3521 if (h->context_initialized &&
3522 (h->width != h->avctx->coded_width ||
3523 h->height != h->avctx->coded_height ||
3524 must_reinit ||
3525 needs_reinit)) {
3526 if (h != h0) {
3527 av_log(h->avctx, AV_LOG_ERROR, "changing width/height on "
3528 "slice %d\n", h0->current_slice + 1);
3529 return AVERROR_INVALIDDATA;
3530 }
3531
3532 flush_change(h);
3533
3534 if ((ret = get_pixel_format(h, 1)) < 0)
3535 return ret;
3536 h->avctx->pix_fmt = ret;
3537
3538 av_log(h->avctx, AV_LOG_INFO, "Reinit context to %dx%d, "
3539 "pix_fmt: %s\n", h->width, h->height, av_get_pix_fmt_name(h->avctx->pix_fmt));
3540
3541 if ((ret = h264_slice_header_init(h, 1)) < 0) {
3542 av_log(h->avctx, AV_LOG_ERROR,
3543 "h264_slice_header_init() failed\n");
3544 return ret;
3545 }
3546 }
3547 if (!h->context_initialized) {
3548 if (h != h0) {
3549 av_log(h->avctx, AV_LOG_ERROR,
3550 "Cannot (re-)initialize context during parallel decoding.\n");
3551 return AVERROR_PATCHWELCOME;
3552 }
3553
3554 if ((ret = get_pixel_format(h, 1)) < 0)
3555 return ret;
3556 h->avctx->pix_fmt = ret;
3557
3558 if ((ret = h264_slice_header_init(h, 0)) < 0) {
3559 av_log(h->avctx, AV_LOG_ERROR,
3560 "h264_slice_header_init() failed\n");
3561 return ret;
3562 }
3563 }
3564
3565 if (h == h0 && h->dequant_coeff_pps != pps_id) {
3566 h->dequant_coeff_pps = pps_id;
3567 init_dequant_tables(h);
3568 }
3569
3570 h->frame_num = get_bits(&h->gb, h->sps.log2_max_frame_num);
3571
3572 h->mb_mbaff = 0;
3573 h->mb_aff_frame = 0;
3574 last_pic_structure = h0->picture_structure;
3575 last_pic_droppable = h0->droppable;
3576 h->droppable = h->nal_ref_idc == 0;
3577 if (h->sps.frame_mbs_only_flag) {
3578 h->picture_structure = PICT_FRAME;
3579 } else {
3580 if (!h->sps.direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B) {
3581 av_log(h->avctx, AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n");
3582 return -1;
3583 }
3584 field_pic_flag = get_bits1(&h->gb);
3585 if (field_pic_flag) {
3586 bottom_field_flag = get_bits1(&h->gb);
3587 h->picture_structure = PICT_TOP_FIELD + bottom_field_flag;
3588 } else {
3589 h->picture_structure = PICT_FRAME;
3590 h->mb_aff_frame = h->sps.mb_aff;
3591 }
3592 }
3593 h->mb_field_decoding_flag = h->picture_structure != PICT_FRAME;
3594
3595 if (h0->current_slice != 0) {
3596 if (last_pic_structure != h->picture_structure ||
3597 last_pic_droppable != h->droppable) {
3598 av_log(h->avctx, AV_LOG_ERROR,
3599 "Changing field mode (%d -> %d) between slices is not allowed\n",
3600 last_pic_structure, h->picture_structure);
3601 h->picture_structure = last_pic_structure;
3602 h->droppable = last_pic_droppable;
3603 return AVERROR_INVALIDDATA;
3604 } else if (!h0->cur_pic_ptr) {
3605 av_log(h->avctx, AV_LOG_ERROR,
3606 "unset cur_pic_ptr on %d. slice\n",
3607 h0->current_slice + 1);
3608 return AVERROR_INVALIDDATA;
3609 }
3610 } else {
3611 /* Shorten frame num gaps so we don't have to allocate reference
3612 * frames just to throw them away */
3613 if (h->frame_num != h->prev_frame_num && h->prev_frame_num >= 0) {
3614 int unwrap_prev_frame_num = h->prev_frame_num;
3615 int max_frame_num = 1 << h->sps.log2_max_frame_num;
3616
3617 if (unwrap_prev_frame_num > h->frame_num)
3618 unwrap_prev_frame_num -= max_frame_num;
3619
3620 if ((h->frame_num - unwrap_prev_frame_num) > h->sps.ref_frame_count) {
3621 unwrap_prev_frame_num = (h->frame_num - h->sps.ref_frame_count) - 1;
3622 if (unwrap_prev_frame_num < 0)
3623 unwrap_prev_frame_num += max_frame_num;
3624
3625 h->prev_frame_num = unwrap_prev_frame_num;
3626 }
3627 }
3628
3629 /* See if we have a decoded first field looking for a pair...
3630 * Here, we're using that to see if we should mark previously
3631 * decode frames as "finished".
3632 * We have to do that before the "dummy" in-between frame allocation,
3633 * since that can modify h->cur_pic_ptr. */
3634 if (h0->first_field) {
3635 assert(h0->cur_pic_ptr);
3636 assert(h0->cur_pic_ptr->f.data[0]);
3637 assert(h0->cur_pic_ptr->reference != DELAYED_PIC_REF);
3638
3639 /* Mark old field/frame as completed */
3640 if (h0->cur_pic_ptr->tf.owner == h0->avctx) {
3641 ff_thread_report_progress(&h0->cur_pic_ptr->tf, INT_MAX,
3642 last_pic_structure == PICT_BOTTOM_FIELD);
3643 }
3644
3645 /* figure out if we have a complementary field pair */
3646 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
3647 /* Previous field is unmatched. Don't display it, but let it
3648 * remain for reference if marked as such. */
3649 if (last_pic_structure != PICT_FRAME) {
3650 ff_thread_report_progress(&h0->cur_pic_ptr->tf, INT_MAX,
3651 last_pic_structure == PICT_TOP_FIELD);
3652 }
3653 } else {
3654 if (h0->cur_pic_ptr->frame_num != h->frame_num) {
3655 /* This and previous field were reference, but had
3656 * different frame_nums. Consider this field first in
3657 * pair. Throw away previous field except for reference
3658 * purposes. */
3659 if (last_pic_structure != PICT_FRAME) {
3660 ff_thread_report_progress(&h0->cur_pic_ptr->tf, INT_MAX,
3661 last_pic_structure == PICT_TOP_FIELD);
3662 }
3663 } else {
3664 /* Second field in complementary pair */
3665 if (!((last_pic_structure == PICT_TOP_FIELD &&
3666 h->picture_structure == PICT_BOTTOM_FIELD) ||
3667 (last_pic_structure == PICT_BOTTOM_FIELD &&
3668 h->picture_structure == PICT_TOP_FIELD))) {
3669 av_log(h->avctx, AV_LOG_ERROR,
3670 "Invalid field mode combination %d/%d\n",
3671 last_pic_structure, h->picture_structure);
3672 h->picture_structure = last_pic_structure;
3673 h->droppable = last_pic_droppable;
3674 return AVERROR_INVALIDDATA;
3675 } else if (last_pic_droppable != h->droppable) {
3676 avpriv_request_sample(h->avctx,
3677 "Found reference and non-reference fields in the same frame, which");
3678 h->picture_structure = last_pic_structure;
3679 h->droppable = last_pic_droppable;
3680 return AVERROR_PATCHWELCOME;
3681 }
3682 }
3683 }
3684 }
3685
3686 while (h->frame_num != h->prev_frame_num && h->prev_frame_num >= 0 && !h0->first_field &&
3687 h->frame_num != (h->prev_frame_num + 1) % (1 << h->sps.log2_max_frame_num)) {
3688 Picture *prev = h->short_ref_count ? h->short_ref[0] : NULL;
3689 av_log(h->avctx, AV_LOG_DEBUG, "Frame num gap %d %d\n",
3690 h->frame_num, h->prev_frame_num);
3691 if (!h->sps.gaps_in_frame_num_allowed_flag)
3692 for(i=0; i<FF_ARRAY_ELEMS(h->last_pocs); i++)
3693 h->last_pocs[i] = INT_MIN;
3694 ret = h264_frame_start(h);
3695 if (ret < 0)
3696 return ret;
3697 h->prev_frame_num++;
3698 h->prev_frame_num %= 1 << h->sps.log2_max_frame_num;
3699 h->cur_pic_ptr->frame_num = h->prev_frame_num;
3700 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 0);
3701 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, 1);
3702 ret = ff_generate_sliding_window_mmcos(h, 1);
3703 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
3704 return ret;
3705 ret = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index);
3706 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
3707 return ret;
3708 /* Error concealment: If a ref is missing, copy the previous ref
3709 * in its place.
3710 * FIXME: Avoiding a memcpy would be nice, but ref handling makes
3711 * many assumptions about there being no actual duplicates.
3712 * FIXME: This does not copy padding for out-of-frame motion
3713 * vectors. Given we are concealing a lost frame, this probably
3714 * is not noticeable by comparison, but it should be fixed. */
3715 if (h->short_ref_count) {
3716 if (prev) {
3717 av_image_copy(h->short_ref[0]->f.data,
3718 h->short_ref[0]->f.linesize,
3719 (const uint8_t **)prev->f.data,
3720 prev->f.linesize,
3721 h->avctx->pix_fmt,
3722 h->mb_width * 16,
3723 h->mb_height * 16);
3724 h->short_ref[0]->poc = prev->poc + 2;
3725 }
3726 h->short_ref[0]->frame_num = h->prev_frame_num;
3727 }
3728 }
3729
3730 /* See if we have a decoded first field looking for a pair...
3731 * We're using that to see whether to continue decoding in that
3732 * frame, or to allocate a new one. */
3733 if (h0->first_field) {
3734 assert(h0->cur_pic_ptr);
3735 assert(h0->cur_pic_ptr->f.data[0]);
3736 assert(h0->cur_pic_ptr->reference != DELAYED_PIC_REF);
3737
3738 /* figure out if we have a complementary field pair */
3739 if (!FIELD_PICTURE(h) || h->picture_structure == last_pic_structure) {
3740 /* Previous field is unmatched. Don't display it, but let it
3741 * remain for reference if marked as such. */
3742 h0->cur_pic_ptr = NULL;
3743 h0->first_field = FIELD_PICTURE(h);
3744 } else {
3745 if (h0->cur_pic_ptr->frame_num != h->frame_num) {
3746 ff_thread_report_progress(&h0->cur_pic_ptr->tf, INT_MAX,
3747 h0->picture_structure==PICT_BOTTOM_FIELD);
3748 /* This and the previous field had different frame_nums.
3749 * Consider this field first in pair. Throw away previous
3750 * one except for reference purposes. */
3751 h0->first_field = 1;
3752 h0->cur_pic_ptr = NULL;
3753 } else {
3754 /* Second field in complementary pair */
3755 h0->first_field = 0;
3756 }
3757 }
3758 } else {
3759 /* Frame or first field in a potentially complementary pair */
3760 h0->first_field = FIELD_PICTURE(h);
3761 }
3762
3763 if (!FIELD_PICTURE(h) || h0->first_field) {
3764 if (h264_frame_start(h) < 0) {
3765 h0->first_field = 0;
3766 return AVERROR_INVALIDDATA;
3767 }
3768 } else {
3769 release_unused_pictures(h, 0);
3770 }
3771 /* Some macroblocks can be accessed before they're available in case
3772 * of lost slices, MBAFF or threading. */
3773 if (FIELD_PICTURE(h)) {
3774 for(i = (h->picture_structure == PICT_BOTTOM_FIELD); i<h->mb_height; i++)
3775 memset(h->slice_table + i*h->mb_stride, -1, (h->mb_stride - (i+1==h->mb_height)) * sizeof(*h->slice_table));
3776 } else {
3777 memset(h->slice_table, -1,
3778 (h->mb_height * h->mb_stride - 1) * sizeof(*h->slice_table));
3779 }
3780 h0->last_slice_type = -1;
3781 }
3782 if (h != h0 && (ret = clone_slice(h, h0)) < 0)
3783 return ret;
3784
3785 /* can't be in alloc_tables because linesize isn't known there.
3786 * FIXME: redo bipred weight to not require extra buffer? */
3787 for (i = 0; i < h->slice_context_count; i++)
3788 if (h->thread_context[i]) {
3789 ret = alloc_scratch_buffers(h->thread_context[i], h->linesize);
3790 if (ret < 0)
3791 return ret;
3792 }
3793
3794 h->cur_pic_ptr->frame_num = h->frame_num; // FIXME frame_num cleanup
3795
3796 av_assert1(h->mb_num == h->mb_width * h->mb_height);
3797 if (first_mb_in_slice << FIELD_OR_MBAFF_PICTURE(h) >= h->mb_num ||
3798 first_mb_in_slice >= h->mb_num) {
3799 av_log(h->avctx, AV_LOG_ERROR, "first_mb_in_slice overflow\n");
3800 return AVERROR_INVALIDDATA;
3801 }
3802 h->resync_mb_x = h->mb_x = first_mb_in_slice % h->mb_width;
3803 h->resync_mb_y = h->mb_y = (first_mb_in_slice / h->mb_width) <<
3804 FIELD_OR_MBAFF_PICTURE(h);
3805 if (h->picture_structure == PICT_BOTTOM_FIELD)
3806 h->resync_mb_y = h->mb_y = h->mb_y + 1;
3807 av_assert1(h->mb_y < h->mb_height);
3808
3809 if (h->picture_structure == PICT_FRAME) {
3810 h->curr_pic_num = h->frame_num;
3811 h->max_pic_num = 1 << h->sps.log2_max_frame_num;
3812 } else {
3813 h->curr_pic_num = 2 * h->frame_num + 1;
3814 h->max_pic_num = 1 << (h->sps.log2_max_frame_num + 1);
3815 }
3816
3817 if (h->nal_unit_type == NAL_IDR_SLICE)
3818 get_ue_golomb(&h->gb); /* idr_pic_id */
3819
3820 if (h->sps.poc_type == 0) {
3821 h->poc_lsb = get_bits(&h->gb, h->sps.log2_max_poc_lsb);
3822
3823 if (h->pps.pic_order_present == 1 && h->picture_structure == PICT_FRAME)
3824 h->delta_poc_bottom = get_se_golomb(&h->gb);
3825 }
3826
3827 if (h->sps.poc_type == 1 && !h->sps.delta_pic_order_always_zero_flag) {
3828 h->delta_poc[0] = get_se_golomb(&h->gb);
3829
3830 if (h->pps.pic_order_present == 1 && h->picture_structure == PICT_FRAME)
3831 h->delta_poc[1] = get_se_golomb(&h->gb);
3832 }
3833
3834 ff_init_poc(h, h->cur_pic_ptr->field_poc, &h->cur_pic_ptr->poc);
3835
3836 if (h->pps.redundant_pic_cnt_present)
3837 h->redundant_pic_count = get_ue_golomb(&h->gb);
3838
3839 ret = ff_set_ref_count(h);
3840 if (ret < 0)
3841 return ret;
3842
3843 if (slice_type != AV_PICTURE_TYPE_I &&
3844 (h0->current_slice == 0 ||
3845 slice_type != h0->last_slice_type ||
3846 memcmp(h0->last_ref_count, h0->ref_count, sizeof(h0->ref_count)))) {
3847
3848 ff_h264_fill_default_ref_list(h);
3849 }
3850
3851 if (h->slice_type_nos != AV_PICTURE_TYPE_I) {
3852 ret = ff_h264_decode_ref_pic_list_reordering(h);
3853 if (ret < 0) {
3854 h->ref_count[1] = h->ref_count[0] = 0;
3855 return ret;
3856 }
3857 }
3858
3859 if ((h->pps.weighted_pred && h->slice_type_nos == AV_PICTURE_TYPE_P) ||
3860 (h->pps.weighted_bipred_idc == 1 &&
3861 h->slice_type_nos == AV_PICTURE_TYPE_B))
3862 ff_pred_weight_table(h);
3863 else if (h->pps.weighted_bipred_idc == 2 &&
3864 h->slice_type_nos == AV_PICTURE_TYPE_B) {
3865 implicit_weight_table(h, -1);
3866 } else {
3867 h->use_weight = 0;
3868 for (i = 0; i < 2; i++) {
3869 h->luma_weight_flag[i] = 0;
3870 h->chroma_weight_flag[i] = 0;
3871 }
3872 }
3873
3874 // If frame-mt is enabled, only update mmco tables for the first slice
3875 // in a field. Subsequent slices can temporarily clobber h->mmco_index
3876 // or h->mmco, which will cause ref list mix-ups and decoding errors
3877 // further down the line. This may break decoding if the first slice is
3878 // corrupt, thus we only do this if frame-mt is enabled.
3879 if (h->nal_ref_idc) {
3880 ret = ff_h264_decode_ref_pic_marking(h0, &h->gb,
3881 !(h->avctx->active_thread_type & FF_THREAD_FRAME) ||
3882 h0->current_slice == 0);
3883 if (ret < 0 && (h->avctx->err_recognition & AV_EF_EXPLODE))
3884 return AVERROR_INVALIDDATA;
3885 }
3886
3887 if (FRAME_MBAFF(h)) {
3888 ff_h264_fill_mbaff_ref_list(h);
3889
3890 if (h->pps.weighted_bipred_idc == 2 && h->slice_type_nos == AV_PICTURE_TYPE_B) {
3891 implicit_weight_table(h, 0);
3892 implicit_weight_table(h, 1);
3893 }
3894 }
3895
3896 if (h->slice_type_nos == AV_PICTURE_TYPE_B && !h->direct_spatial_mv_pred)
3897 ff_h264_direct_dist_scale_factor(h);
3898 ff_h264_direct_ref_list_init(h);
3899
3900 if (h->slice_type_nos != AV_PICTURE_TYPE_I && h->pps.cabac) {
3901 tmp = get_ue_golomb_31(&h->gb);
3902 if (tmp > 2) {
3903 av_log(h->avctx, AV_LOG_ERROR, "cabac_init_idc overflow\n");
3904 return AVERROR_INVALIDDATA;
3905 }
3906 h->cabac_init_idc = tmp;
3907 }
3908
3909 h->last_qscale_diff = 0;
3910 tmp = h->pps.init_qp + get_se_golomb(&h->gb);
3911 if (tmp > 51 + 6 * (h->sps.bit_depth_luma - 8)) {
3912 av_log(h->avctx, AV_LOG_ERROR, "QP %u out of range\n", tmp);
3913 return AVERROR_INVALIDDATA;
3914 }
3915 h->qscale = tmp;
3916 h->chroma_qp[0] = get_chroma_qp(h, 0, h->qscale);
3917 h->chroma_qp[1] = get_chroma_qp(h, 1, h->qscale);
3918 // FIXME qscale / qp ... stuff
3919 if (h->slice_type == AV_PICTURE_TYPE_SP)
3920 get_bits1(&h->gb); /* sp_for_switch_flag */
3921 if (h->slice_type == AV_PICTURE_TYPE_SP ||
3922 h->slice_type == AV_PICTURE_TYPE_SI)
3923 get_se_golomb(&h->gb); /* slice_qs_delta */
3924
3925 h->deblocking_filter = 1;
3926 h->slice_alpha_c0_offset = 52;
3927 h->slice_beta_offset = 52;
3928 if (h->pps.deblocking_filter_parameters_present) {
3929 tmp = get_ue_golomb_31(&h->gb);
3930 if (tmp > 2) {
3931 av_log(h->avctx, AV_LOG_ERROR,
3932 "deblocking_filter_idc %u out of range\n", tmp);
3933 return AVERROR_INVALIDDATA;
3934 }
3935 h->deblocking_filter = tmp;
3936 if (h->deblocking_filter < 2)
3937 h->deblocking_filter ^= 1; // 1<->0
3938
3939 if (h->deblocking_filter) {
3940 h->slice_alpha_c0_offset += get_se_golomb(&h->gb) << 1;
3941 h->slice_beta_offset += get_se_golomb(&h->gb) << 1;
3942 if (h->slice_alpha_c0_offset > 104U ||
3943 h->slice_beta_offset > 104U) {
3944 av_log(h->avctx, AV_LOG_ERROR,
3945 "deblocking filter parameters %d %d out of range\n",
3946 h->slice_alpha_c0_offset, h->slice_beta_offset);
3947 return AVERROR_INVALIDDATA;
3948 }
3949 }
3950 }
3951
3952 if (h->avctx->skip_loop_filter >= AVDISCARD_ALL ||
3953 (h->avctx->skip_loop_filter >= AVDISCARD_NONKEY &&
3954 h->slice_type_nos != AV_PICTURE_TYPE_I) ||
3955 (h->avctx->skip_loop_filter >= AVDISCARD_BIDIR &&
3956 h->slice_type_nos == AV_PICTURE_TYPE_B) ||
3957 (h->avctx->skip_loop_filter >= AVDISCARD_NONREF &&
3958 h->nal_ref_idc == 0))
3959 h->deblocking_filter = 0;
3960
3961 if (h->deblocking_filter == 1 && h0->max_contexts > 1) {
3962 if (h->avctx->flags2 & CODEC_FLAG2_FAST) {
3963 /* Cheat slightly for speed:
3964 * Do not bother to deblock across slices. */
3965 h->deblocking_filter = 2;
3966 } else {
3967 h0->max_contexts = 1;
3968 if (!h0->single_decode_warning) {
3969 av_log(h->avctx, AV_LOG_INFO,
3970 "Cannot parallelize deblocking type 1, decoding such frames in sequential order\n");
3971 h0->single_decode_warning = 1;
3972 }
3973 if (h != h0) {
3974 av_log(h->avctx, AV_LOG_ERROR,
3975 "Deblocking switched inside frame.\n");
3976 return 1;
3977 }
3978 }
3979 }
3980 h->qp_thresh = 15 + 52 -
3981 FFMIN(h->slice_alpha_c0_offset, h->slice_beta_offset) -
3982 FFMAX3(0,
3983 h->pps.chroma_qp_index_offset[0],
3984 h->pps.chroma_qp_index_offset[1]) +
3985 6 * (h->sps.bit_depth_luma - 8);
3986
3987 h0->last_slice_type = slice_type;
3988 memcpy(h0->last_ref_count, h0->ref_count, sizeof(h0->last_ref_count));
3989 h->slice_num = ++h0->current_slice;
3990
3991 if (h->slice_num)
3992 h0->slice_row[(h->slice_num-1)&(MAX_SLICES-1)]= h->resync_mb_y;
3993 if ( h0->slice_row[h->slice_num&(MAX_SLICES-1)] + 3 >= h->resync_mb_y
3994 && h0->slice_row[h->slice_num&(MAX_SLICES-1)] <= h->resync_mb_y
3995 && h->slice_num >= MAX_SLICES) {
3996 //in case of ASO this check needs to be updated depending on how we decide to assign slice numbers in this case
3997 av_log(h->avctx, AV_LOG_WARNING, "Possibly too many slices (%d >= %d), increase MAX_SLICES and recompile if there are artifacts\n", h->slice_num, MAX_SLICES);
3998 }
3999
4000 for (j = 0; j < 2; j++) {
4001 int id_list[16];
4002 int *ref2frm = h->ref2frm[h->slice_num & (MAX_SLICES - 1)][j];
4003 for (i = 0; i < 16; i++) {
4004 id_list[i] = 60;
4005 if (j < h->list_count && i < h->ref_count[j] &&
4006 h->ref_list[j][i].f.buf[0]) {
4007 int k;
4008 AVBuffer *buf = h->ref_list[j][i].f.buf[0]->buffer;
4009 for (k = 0; k < h->short_ref_count; k++)
4010 if (h->short_ref[k]->f.buf[0]->buffer == buf) {
4011 id_list[i] = k;
4012 break;
4013 }
4014 for (k = 0; k < h->long_ref_count; k++)
4015 if (h->long_ref[k] && h->long_ref[k]->f.buf[0]->buffer == buf) {
4016 id_list[i] = h->short_ref_count + k;
4017 break;
4018 }
4019 }
4020 }
4021
4022 ref2frm[0] =
4023 ref2frm[1] = -1;
4024 for (i = 0; i < 16; i++)
4025 ref2frm[i + 2] = 4 * id_list[i] + (h->ref_list[j][i].reference & 3);
4026 ref2frm[18 + 0] =
4027 ref2frm[18 + 1] = -1;
4028 for (i = 16; i < 48; i++)
4029 ref2frm[i + 4] = 4 * id_list[(i - 16) >> 1] +
4030 (h->ref_list[j][i].reference & 3);
4031 }
4032
4033 if (h->ref_count[0]) h->er.last_pic = &h->ref_list[0][0];
4034 if (h->ref_count[1]) h->er.next_pic = &h->ref_list[1][0];
4035 h->er.ref_count = h->ref_count[0];
4036
4037 if (h->avctx->debug & FF_DEBUG_PICT_INFO) {
4038 av_log(h->avctx, AV_LOG_DEBUG,
4039 "slice:%d %s mb:%d %c%s%s pps:%u frame:%d poc:%d/%d ref:%d/%d qp:%d loop:%d:%d:%d weight:%d%s %s\n",
4040 h->slice_num,
4041 (h->picture_structure == PICT_FRAME ? "F" : h->picture_structure == PICT_TOP_FIELD ? "T" : "B"),
4042 first_mb_in_slice,
4043 av_get_picture_type_char(h->slice_type),
4044 h->slice_type_fixed ? " fix" : "",
4045 h->nal_unit_type == NAL_IDR_SLICE ? " IDR" : "",
4046 pps_id, h->frame_num,
4047 h->cur_pic_ptr->field_poc[0],
4048 h->cur_pic_ptr->field_poc[1],
4049 h->ref_count[0], h->ref_count[1],
4050 h->qscale,
4051 h->deblocking_filter,
4052 h->slice_alpha_c0_offset / 2 - 26, h->slice_beta_offset / 2 - 26,
4053 h->use_weight,
4054 h->use_weight == 1 && h->use_weight_chroma ? "c" : "",
4055 h->slice_type == AV_PICTURE_TYPE_B ? (h->direct_spatial_mv_pred ? "SPAT" : "TEMP") : "");
4056 }
4057
4058 return 0;
4059}
4060
4061int ff_h264_get_slice_type(const H264Context *h)
4062{
4063 switch (h->slice_type) {
4064 case AV_PICTURE_TYPE_P:
4065 return 0;
4066 case AV_PICTURE_TYPE_B:
4067 return 1;
4068 case AV_PICTURE_TYPE_I:
4069 return 2;
4070 case AV_PICTURE_TYPE_SP:
4071 return 3;
4072 case AV_PICTURE_TYPE_SI:
4073 return 4;
4074 default:
4075 return AVERROR_INVALIDDATA;
4076 }
4077}
4078
4079static av_always_inline void fill_filter_caches_inter(H264Context *h,
4080 int mb_type, int top_xy,
4081 int left_xy[LEFT_MBS],
4082 int top_type,
4083 int left_type[LEFT_MBS],
4084 int mb_xy, int list)
4085{
4086 int b_stride = h->b_stride;
4087 int16_t(*mv_dst)[2] = &h->mv_cache[list][scan8[0]];
4088 int8_t *ref_cache = &h->ref_cache[list][scan8[0]];
4089 if (IS_INTER(mb_type) || IS_DIRECT(mb_type)) {
4090 if (USES_LIST(top_type, list)) {
4091 const int b_xy = h->mb2b_xy[top_xy] + 3 * b_stride;
4092 const int b8_xy = 4 * top_xy + 2;
4093 int (*ref2frm)[64] = (void*)(h->ref2frm[h->slice_table[top_xy] & (MAX_SLICES - 1)][0] + (MB_MBAFF(h) ? 20 : 2));
4094 AV_COPY128(mv_dst - 1 * 8, h->cur_pic.motion_val[list][b_xy + 0]);
4095 ref_cache[0 - 1 * 8] =
4096 ref_cache[1 - 1 * 8] = ref2frm[list][h->cur_pic.ref_index[list][b8_xy + 0]];
4097 ref_cache[2 - 1 * 8] =
4098 ref_cache[3 - 1 * 8] = ref2frm[list][h->cur_pic.ref_index[list][b8_xy + 1]];
4099 } else {
4100 AV_ZERO128(mv_dst - 1 * 8);
4101 AV_WN32A(&ref_cache[0 - 1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
4102 }
4103
4104 if (!IS_INTERLACED(mb_type ^ left_type[LTOP])) {
4105 if (USES_LIST(left_type[LTOP], list)) {
4106 const int b_xy = h->mb2b_xy[left_xy[LTOP]] + 3;
4107 const int b8_xy = 4 * left_xy[LTOP] + 1;
4108 int (*ref2frm)[64] =(void*)( h->ref2frm[h->slice_table[left_xy[LTOP]] & (MAX_SLICES - 1)][0] + (MB_MBAFF(h) ? 20 : 2));
4109 AV_COPY32(mv_dst - 1 + 0, h->cur_pic.motion_val[list][b_xy + b_stride * 0]);
4110 AV_COPY32(mv_dst - 1 + 8, h->cur_pic.motion_val[list][b_xy + b_stride * 1]);
4111 AV_COPY32(mv_dst - 1 + 16, h->cur_pic.motion_val[list][b_xy + b_stride * 2]);
4112 AV_COPY32(mv_dst - 1 + 24, h->cur_pic.motion_val[list][b_xy + b_stride * 3]);
4113 ref_cache[-1 + 0] =
4114 ref_cache[-1 + 8] = ref2frm[list][h->cur_pic.ref_index[list][b8_xy + 2 * 0]];
4115 ref_cache[-1 + 16] =
4116 ref_cache[-1 + 24] = ref2frm[list][h->cur_pic.ref_index[list][b8_xy + 2 * 1]];
4117 } else {
4118 AV_ZERO32(mv_dst - 1 + 0);
4119 AV_ZERO32(mv_dst - 1 + 8);
4120 AV_ZERO32(mv_dst - 1 + 16);
4121 AV_ZERO32(mv_dst - 1 + 24);
4122 ref_cache[-1 + 0] =
4123 ref_cache[-1 + 8] =
4124 ref_cache[-1 + 16] =
4125 ref_cache[-1 + 24] = LIST_NOT_USED;
4126 }
4127 }
4128 }
4129
4130 if (!USES_LIST(mb_type, list)) {
4131 fill_rectangle(mv_dst, 4, 4, 8, pack16to32(0, 0), 4);
4132 AV_WN32A(&ref_cache[0 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
4133 AV_WN32A(&ref_cache[1 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
4134 AV_WN32A(&ref_cache[2 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
4135 AV_WN32A(&ref_cache[3 * 8], ((LIST_NOT_USED) & 0xFF) * 0x01010101u);
4136 return;
4137 }
4138
4139 {
4140 int8_t *ref = &h->cur_pic.ref_index[list][4 * mb_xy];
4141 int (*ref2frm)[64] = (void*)(h->ref2frm[h->slice_num & (MAX_SLICES - 1)][0] + (MB_MBAFF(h) ? 20 : 2));
4142 uint32_t ref01 = (pack16to32(ref2frm[list][ref[0]], ref2frm[list][ref[1]]) & 0x00FF00FF) * 0x0101;
4143 uint32_t ref23 = (pack16to32(ref2frm[list][ref[2]], ref2frm[list][ref[3]]) & 0x00FF00FF) * 0x0101;
4144 AV_WN32A(&ref_cache[0 * 8], ref01);
4145 AV_WN32A(&ref_cache[1 * 8], ref01);
4146 AV_WN32A(&ref_cache[2 * 8], ref23);
4147 AV_WN32A(&ref_cache[3 * 8], ref23);
4148 }
4149
4150 {
4151 int16_t(*mv_src)[2] = &h->cur_pic.motion_val[list][4 * h->mb_x + 4 * h->mb_y * b_stride];
4152 AV_COPY128(mv_dst + 8 * 0, mv_src + 0 * b_stride);
4153 AV_COPY128(mv_dst + 8 * 1, mv_src + 1 * b_stride);
4154 AV_COPY128(mv_dst + 8 * 2, mv_src + 2 * b_stride);
4155 AV_COPY128(mv_dst + 8 * 3, mv_src + 3 * b_stride);
4156 }
4157}
4158
4159/**
4160 *
4161 * @return non zero if the loop filter can be skipped
4162 */
4163static int fill_filter_caches(H264Context *h, int mb_type)
4164{
4165 const int mb_xy = h->mb_xy;
4166 int top_xy, left_xy[LEFT_MBS];
4167 int top_type, left_type[LEFT_MBS];
4168 uint8_t *nnz;
4169 uint8_t *nnz_cache;
4170
4171 top_xy = mb_xy - (h->mb_stride << MB_FIELD(h));
4172
4173 /* Wow, what a mess, why didn't they simplify the interlacing & intra
4174 * stuff, I can't imagine that these complex rules are worth it. */
4175
4176 left_xy[LBOT] = left_xy[LTOP] = mb_xy - 1;
4177 if (FRAME_MBAFF(h)) {
4178 const int left_mb_field_flag = IS_INTERLACED(h->cur_pic.mb_type[mb_xy - 1]);
4179 const int curr_mb_field_flag = IS_INTERLACED(mb_type);
4180 if (h->mb_y & 1) {
4181 if (left_mb_field_flag != curr_mb_field_flag)
4182 left_xy[LTOP] -= h->mb_stride;
4183 } else {
4184 if (curr_mb_field_flag)
4185 top_xy += h->mb_stride &
4186 (((h->cur_pic.mb_type[top_xy] >> 7) & 1) - 1);
4187 if (left_mb_field_flag != curr_mb_field_flag)
4188 left_xy[LBOT] += h->mb_stride;
4189 }
4190 }
4191
4192 h->top_mb_xy = top_xy;
4193 h->left_mb_xy[LTOP] = left_xy[LTOP];
4194 h->left_mb_xy[LBOT] = left_xy[LBOT];
4195 {
4196 /* For sufficiently low qp, filtering wouldn't do anything.
4197 * This is a conservative estimate: could also check beta_offset
4198 * and more accurate chroma_qp. */
4199 int qp_thresh = h->qp_thresh; // FIXME strictly we should store qp_thresh for each mb of a slice
4200 int qp = h->cur_pic.qscale_table[mb_xy];
4201 if (qp <= qp_thresh &&
4202 (left_xy[LTOP] < 0 ||
4203 ((qp + h->cur_pic.qscale_table[left_xy[LTOP]] + 1) >> 1) <= qp_thresh) &&
4204 (top_xy < 0 ||
4205 ((qp + h->cur_pic.qscale_table[top_xy] + 1) >> 1) <= qp_thresh)) {
4206 if (!FRAME_MBAFF(h))
4207 return 1;
4208 if ((left_xy[LTOP] < 0 ||
4209 ((qp + h->cur_pic.qscale_table[left_xy[LBOT]] + 1) >> 1) <= qp_thresh) &&
4210 (top_xy < h->mb_stride ||
4211 ((qp + h->cur_pic.qscale_table[top_xy - h->mb_stride] + 1) >> 1) <= qp_thresh))
4212 return 1;
4213 }
4214 }
4215
4216 top_type = h->cur_pic.mb_type[top_xy];
4217 left_type[LTOP] = h->cur_pic.mb_type[left_xy[LTOP]];
4218 left_type[LBOT] = h->cur_pic.mb_type[left_xy[LBOT]];
4219 if (h->deblocking_filter == 2) {
4220 if (h->slice_table[top_xy] != h->slice_num)
4221 top_type = 0;
4222 if (h->slice_table[left_xy[LBOT]] != h->slice_num)
4223 left_type[LTOP] = left_type[LBOT] = 0;
4224 } else {
4225 if (h->slice_table[top_xy] == 0xFFFF)
4226 top_type = 0;
4227 if (h->slice_table[left_xy[LBOT]] == 0xFFFF)
4228 left_type[LTOP] = left_type[LBOT] = 0;
4229 }
4230 h->top_type = top_type;
4231 h->left_type[LTOP] = left_type[LTOP];
4232 h->left_type[LBOT] = left_type[LBOT];
4233
4234 if (IS_INTRA(mb_type))
4235 return 0;
4236
4237 fill_filter_caches_inter(h, mb_type, top_xy, left_xy,
4238 top_type, left_type, mb_xy, 0);
4239 if (h->list_count == 2)
4240 fill_filter_caches_inter(h, mb_type, top_xy, left_xy,
4241 top_type, left_type, mb_xy, 1);
4242
4243 nnz = h->non_zero_count[mb_xy];
4244 nnz_cache = h->non_zero_count_cache;
4245 AV_COPY32(&nnz_cache[4 + 8 * 1], &nnz[0]);
4246 AV_COPY32(&nnz_cache[4 + 8 * 2], &nnz[4]);
4247 AV_COPY32(&nnz_cache[4 + 8 * 3], &nnz[8]);
4248 AV_COPY32(&nnz_cache[4 + 8 * 4], &nnz[12]);
4249 h->cbp = h->cbp_table[mb_xy];
4250
4251 if (top_type) {
4252 nnz = h->non_zero_count[top_xy];
4253 AV_COPY32(&nnz_cache[4 + 8 * 0], &nnz[3 * 4]);
4254 }
4255
4256 if (left_type[LTOP]) {
4257 nnz = h->non_zero_count[left_xy[LTOP]];
4258 nnz_cache[3 + 8 * 1] = nnz[3 + 0 * 4];
4259 nnz_cache[3 + 8 * 2] = nnz[3 + 1 * 4];
4260 nnz_cache[3 + 8 * 3] = nnz[3 + 2 * 4];
4261 nnz_cache[3 + 8 * 4] = nnz[3 + 3 * 4];
4262 }
4263
4264 /* CAVLC 8x8dct requires NNZ values for residual decoding that differ
4265 * from what the loop filter needs */
4266 if (!CABAC(h) && h->pps.transform_8x8_mode) {
4267 if (IS_8x8DCT(top_type)) {
4268 nnz_cache[4 + 8 * 0] =
4269 nnz_cache[5 + 8 * 0] = (h->cbp_table[top_xy] & 0x4000) >> 12;
4270 nnz_cache[6 + 8 * 0] =
4271 nnz_cache[7 + 8 * 0] = (h->cbp_table[top_xy] & 0x8000) >> 12;
4272 }
4273 if (IS_8x8DCT(left_type[LTOP])) {
4274 nnz_cache[3 + 8 * 1] =
4275 nnz_cache[3 + 8 * 2] = (h->cbp_table[left_xy[LTOP]] & 0x2000) >> 12; // FIXME check MBAFF
4276 }
4277 if (IS_8x8DCT(left_type[LBOT])) {
4278 nnz_cache[3 + 8 * 3] =
4279 nnz_cache[3 + 8 * 4] = (h->cbp_table[left_xy[LBOT]] & 0x8000) >> 12; // FIXME check MBAFF
4280 }
4281
4282 if (IS_8x8DCT(mb_type)) {
4283 nnz_cache[scan8[0]] =
4284 nnz_cache[scan8[1]] =
4285 nnz_cache[scan8[2]] =
4286 nnz_cache[scan8[3]] = (h->cbp & 0x1000) >> 12;
4287
4288 nnz_cache[scan8[0 + 4]] =
4289 nnz_cache[scan8[1 + 4]] =
4290 nnz_cache[scan8[2 + 4]] =
4291 nnz_cache[scan8[3 + 4]] = (h->cbp & 0x2000) >> 12;
4292
4293 nnz_cache[scan8[0 + 8]] =
4294 nnz_cache[scan8[1 + 8]] =
4295 nnz_cache[scan8[2 + 8]] =
4296 nnz_cache[scan8[3 + 8]] = (h->cbp & 0x4000) >> 12;
4297
4298 nnz_cache[scan8[0 + 12]] =
4299 nnz_cache[scan8[1 + 12]] =
4300 nnz_cache[scan8[2 + 12]] =
4301 nnz_cache[scan8[3 + 12]] = (h->cbp & 0x8000) >> 12;
4302 }
4303 }
4304
4305 return 0;
4306}
4307
4308static void loop_filter(H264Context *h, int start_x, int end_x)
4309{
4310 uint8_t *dest_y, *dest_cb, *dest_cr;
4311 int linesize, uvlinesize, mb_x, mb_y;
4312 const int end_mb_y = h->mb_y + FRAME_MBAFF(h);
4313 const int old_slice_type = h->slice_type;
4314 const int pixel_shift = h->pixel_shift;
4315 const int block_h = 16 >> h->chroma_y_shift;
4316
4317 if (h->deblocking_filter) {
4318 for (mb_x = start_x; mb_x < end_x; mb_x++)
4319 for (mb_y = end_mb_y - FRAME_MBAFF(h); mb_y <= end_mb_y; mb_y++) {
4320 int mb_xy, mb_type;
4321 mb_xy = h->mb_xy = mb_x + mb_y * h->mb_stride;
4322 h->slice_num = h->slice_table[mb_xy];
4323 mb_type = h->cur_pic.mb_type[mb_xy];
4324 h->list_count = h->list_counts[mb_xy];
4325
4326 if (FRAME_MBAFF(h))
4327 h->mb_mbaff =
4328 h->mb_field_decoding_flag = !!IS_INTERLACED(mb_type);
4329
4330 h->mb_x = mb_x;
4331 h->mb_y = mb_y;
4332 dest_y = h->cur_pic.f.data[0] +
4333 ((mb_x << pixel_shift) + mb_y * h->linesize) * 16;
4334 dest_cb = h->cur_pic.f.data[1] +
4335 (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
4336 mb_y * h->uvlinesize * block_h;
4337 dest_cr = h->cur_pic.f.data[2] +
4338 (mb_x << pixel_shift) * (8 << CHROMA444(h)) +
4339 mb_y * h->uvlinesize * block_h;
4340 // FIXME simplify above
4341
4342 if (MB_FIELD(h)) {
4343 linesize = h->mb_linesize = h->linesize * 2;
4344 uvlinesize = h->mb_uvlinesize = h->uvlinesize * 2;
4345 if (mb_y & 1) { // FIXME move out of this function?
4346 dest_y -= h->linesize * 15;
4347 dest_cb -= h->uvlinesize * (block_h - 1);
4348 dest_cr -= h->uvlinesize * (block_h - 1);
4349 }
4350 } else {
4351 linesize = h->mb_linesize = h->linesize;
4352 uvlinesize = h->mb_uvlinesize = h->uvlinesize;
4353 }
4354 backup_mb_border(h, dest_y, dest_cb, dest_cr, linesize,
4355 uvlinesize, 0);
4356 if (fill_filter_caches(h, mb_type))
4357 continue;
4358 h->chroma_qp[0] = get_chroma_qp(h, 0, h->cur_pic.qscale_table[mb_xy]);
4359 h->chroma_qp[1] = get_chroma_qp(h, 1, h->cur_pic.qscale_table[mb_xy]);
4360
4361 if (FRAME_MBAFF(h)) {
4362 ff_h264_filter_mb(h, mb_x, mb_y, dest_y, dest_cb, dest_cr,
4363 linesize, uvlinesize);
4364 } else {
4365 ff_h264_filter_mb_fast(h, mb_x, mb_y, dest_y, dest_cb,
4366 dest_cr, linesize, uvlinesize);
4367 }
4368 }
4369 }
4370 h->slice_type = old_slice_type;
4371 h->mb_x = end_x;
4372 h->mb_y = end_mb_y - FRAME_MBAFF(h);
4373 h->chroma_qp[0] = get_chroma_qp(h, 0, h->qscale);
4374 h->chroma_qp[1] = get_chroma_qp(h, 1, h->qscale);
4375}
4376
4377static void predict_field_decoding_flag(H264Context *h)
4378{
4379 const int mb_xy = h->mb_x + h->mb_y * h->mb_stride;
4380 int mb_type = (h->slice_table[mb_xy - 1] == h->slice_num) ?
4381 h->cur_pic.mb_type[mb_xy - 1] :
4382 (h->slice_table[mb_xy - h->mb_stride] == h->slice_num) ?
4383 h->cur_pic.mb_type[mb_xy - h->mb_stride] : 0;
4384 h->mb_mbaff = h->mb_field_decoding_flag = IS_INTERLACED(mb_type) ? 1 : 0;
4385}
4386
4387/**
4388 * Draw edges and report progress for the last MB row.
4389 */
4390static void decode_finish_row(H264Context *h)
4391{
4392 int top = 16 * (h->mb_y >> FIELD_PICTURE(h));
4393 int pic_height = 16 * h->mb_height >> FIELD_PICTURE(h);
4394 int height = 16 << FRAME_MBAFF(h);
4395 int deblock_border = (16 + 4) << FRAME_MBAFF(h);
4396
4397 if (h->deblocking_filter) {
4398 if ((top + height) >= pic_height)
4399 height += deblock_border;
4400 top -= deblock_border;
4401 }
4402
4403 if (top >= pic_height || (top + height) < 0)
4404 return;
4405
4406 height = FFMIN(height, pic_height - top);
4407 if (top < 0) {
4408 height = top + height;
4409 top = 0;
4410 }
4411
4412 ff_h264_draw_horiz_band(h, top, height);
4413
4414 if (h->droppable || h->er.error_occurred)
4415 return;
4416
4417 ff_thread_report_progress(&h->cur_pic_ptr->tf, top + height - 1,
4418 h->picture_structure == PICT_BOTTOM_FIELD);
4419}
4420
4421static void er_add_slice(H264Context *h, int startx, int starty,
4422 int endx, int endy, int status)
4423{
4424 if (CONFIG_ERROR_RESILIENCE) {
4425 ERContext *er = &h->er;
4426
4427 ff_er_add_slice(er, startx, starty, endx, endy, status);
4428 }
4429}
4430
4431static int decode_slice(struct AVCodecContext *avctx, void *arg)
4432{
4433 H264Context *h = *(void **)arg;
4434 int lf_x_start = h->mb_x;
4435
4436 h->mb_skip_run = -1;
4437
4438 av_assert0(h->block_offset[15] == (4 * ((scan8[15] - scan8[0]) & 7) << h->pixel_shift) + 4 * h->linesize * ((scan8[15] - scan8[0]) >> 3));
4439
4440 h->is_complex = FRAME_MBAFF(h) || h->picture_structure != PICT_FRAME ||
4441 avctx->codec_id != AV_CODEC_ID_H264 ||
4442 (CONFIG_GRAY && (h->flags & CODEC_FLAG_GRAY));
4443
4444 if (!(h->avctx->active_thread_type & FF_THREAD_SLICE) && h->picture_structure == PICT_FRAME && h->er.error_status_table) {
4445 const int start_i = av_clip(h->resync_mb_x + h->resync_mb_y * h->mb_width, 0, h->mb_num - 1);
4446 if (start_i) {
4447 int prev_status = h->er.error_status_table[h->er.mb_index2xy[start_i - 1]];
4448 prev_status &= ~ VP_START;
4449 if (prev_status != (ER_MV_END | ER_DC_END | ER_AC_END))
4450 h->er.error_occurred = 1;
4451 }
4452 }
4453
4454 if (h->pps.cabac) {
4455 /* realign */
4456 align_get_bits(&h->gb);
4457
4458 /* init cabac */
4459 ff_init_cabac_decoder(&h->cabac,
4460 h->gb.buffer + get_bits_count(&h->gb) / 8,
4461 (get_bits_left(&h->gb) + 7) / 8);
4462
4463 ff_h264_init_cabac_states(h);
4464
4465 for (;;) {
4466 // START_TIMER
4467 int ret = ff_h264_decode_mb_cabac(h);
4468 int eos;
4469 // STOP_TIMER("decode_mb_cabac")
4470
4471 if (ret >= 0)
4472 ff_h264_hl_decode_mb(h);
4473
4474 // FIXME optimal? or let mb_decode decode 16x32 ?
4475 if (ret >= 0 && FRAME_MBAFF(h)) {
4476 h->mb_y++;
4477
4478 ret = ff_h264_decode_mb_cabac(h);
4479
4480 if (ret >= 0)
4481 ff_h264_hl_decode_mb(h);
4482 h->mb_y--;
4483 }
4484 eos = get_cabac_terminate(&h->cabac);
4485
4486 if ((h->workaround_bugs & FF_BUG_TRUNCATED) &&
4487 h->cabac.bytestream > h->cabac.bytestream_end + 2) {
4488 er_add_slice(h, h->resync_mb_x, h->resync_mb_y, h->mb_x - 1,
4489 h->mb_y, ER_MB_END);
4490 if (h->mb_x >= lf_x_start)
4491 loop_filter(h, lf_x_start, h->mb_x + 1);
4492 return 0;
4493 }
4494 if (h->cabac.bytestream > h->cabac.bytestream_end + 2 )
4495 av_log(h->avctx, AV_LOG_DEBUG, "bytestream overread %td\n", h->cabac.bytestream_end - h->cabac.bytestream);
4496 if (ret < 0 || h->cabac.bytestream > h->cabac.bytestream_end + 4) {
4497 av_log(h->avctx, AV_LOG_ERROR,
4498 "error while decoding MB %d %d, bytestream (%td)\n",
4499 h->mb_x, h->mb_y,
4500 h->cabac.bytestream_end - h->cabac.bytestream);
4501 er_add_slice(h, h->resync_mb_x, h->resync_mb_y, h->mb_x,
4502 h->mb_y, ER_MB_ERROR);
4503 return AVERROR_INVALIDDATA;
4504 }
4505
4506 if (++h->mb_x >= h->mb_width) {
4507 loop_filter(h, lf_x_start, h->mb_x);
4508 h->mb_x = lf_x_start = 0;
4509 decode_finish_row(h);
4510 ++h->mb_y;
4511 if (FIELD_OR_MBAFF_PICTURE(h)) {
4512 ++h->mb_y;
4513 if (FRAME_MBAFF(h) && h->mb_y < h->mb_height)
4514 predict_field_decoding_flag(h);
4515 }
4516 }
4517
4518 if (eos || h->mb_y >= h->mb_height) {
4519 tprintf(h->avctx, "slice end %d %d\n",
4520 get_bits_count(&h->gb), h->gb.size_in_bits);
4521 er_add_slice(h, h->resync_mb_x, h->resync_mb_y, h->mb_x - 1,
4522 h->mb_y, ER_MB_END);
4523 if (h->mb_x > lf_x_start)
4524 loop_filter(h, lf_x_start, h->mb_x);
4525 return 0;
4526 }
4527 }
4528 } else {
4529 for (;;) {
4530 int ret = ff_h264_decode_mb_cavlc(h);
4531
4532 if (ret >= 0)
4533 ff_h264_hl_decode_mb(h);
4534
4535 // FIXME optimal? or let mb_decode decode 16x32 ?
4536 if (ret >= 0 && FRAME_MBAFF(h)) {
4537 h->mb_y++;
4538 ret = ff_h264_decode_mb_cavlc(h);
4539
4540 if (ret >= 0)
4541 ff_h264_hl_decode_mb(h);
4542 h->mb_y--;
4543 }
4544
4545 if (ret < 0) {
4546 av_log(h->avctx, AV_LOG_ERROR,
4547 "error while decoding MB %d %d\n", h->mb_x, h->mb_y);
4548 er_add_slice(h, h->resync_mb_x, h->resync_mb_y, h->mb_x,
4549 h->mb_y, ER_MB_ERROR);
4550 return ret;
4551 }
4552
4553 if (++h->mb_x >= h->mb_width) {
4554 loop_filter(h, lf_x_start, h->mb_x);
4555 h->mb_x = lf_x_start = 0;
4556 decode_finish_row(h);
4557 ++h->mb_y;
4558 if (FIELD_OR_MBAFF_PICTURE(h)) {
4559 ++h->mb_y;
4560 if (FRAME_MBAFF(h) && h->mb_y < h->mb_height)
4561 predict_field_decoding_flag(h);
4562 }
4563 if (h->mb_y >= h->mb_height) {
4564 tprintf(h->avctx, "slice end %d %d\n",
4565 get_bits_count(&h->gb), h->gb.size_in_bits);
4566
4567 if ( get_bits_left(&h->gb) == 0
4568 || get_bits_left(&h->gb) > 0 && !(h->avctx->err_recognition & AV_EF_AGGRESSIVE)) {
4569 er_add_slice(h, h->resync_mb_x, h->resync_mb_y,
4570 h->mb_x - 1, h->mb_y,
4571 ER_MB_END);
4572
4573 return 0;
4574 } else {
4575 er_add_slice(h, h->resync_mb_x, h->resync_mb_y,
4576 h->mb_x, h->mb_y,
4577 ER_MB_END);
4578
4579 return AVERROR_INVALIDDATA;
4580 }
4581 }
4582 }
4583
4584 if (get_bits_left(&h->gb) <= 0 && h->mb_skip_run <= 0) {
4585 tprintf(h->avctx, "slice end %d %d\n",
4586 get_bits_count(&h->gb), h->gb.size_in_bits);
4587
4588 if (get_bits_left(&h->gb) == 0) {
4589 er_add_slice(h, h->resync_mb_x, h->resync_mb_y,
4590 h->mb_x - 1, h->mb_y,
4591 ER_MB_END);
4592 if (h->mb_x > lf_x_start)
4593 loop_filter(h, lf_x_start, h->mb_x);
4594
4595 return 0;
4596 } else {
4597 er_add_slice(h, h->resync_mb_x, h->resync_mb_y, h->mb_x,
4598 h->mb_y, ER_MB_ERROR);
4599
4600 return AVERROR_INVALIDDATA;
4601 }
4602 }
4603 }
4604 }
4605}
4606
4607/**
4608 * Call decode_slice() for each context.
4609 *
4610 * @param h h264 master context
4611 * @param context_count number of contexts to execute
4612 */
4613static int execute_decode_slices(H264Context *h, int context_count)
4614{
4615 AVCodecContext *const avctx = h->avctx;
4616 H264Context *hx;
4617 int i;
4618
4619 if (h->avctx->hwaccel ||
4620 h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
4621 return 0;
4622 if (context_count == 1) {
4623 return decode_slice(avctx, &h);
4624 } else {
4625 av_assert0(context_count > 0);
4626 for (i = 1; i < context_count; i++) {
4627 hx = h->thread_context[i];
4628 if (CONFIG_ERROR_RESILIENCE) {
4629 hx->er.error_count = 0;
4630 }
4631 hx->x264_build = h->x264_build;
4632 }
4633
4634 avctx->execute(avctx, decode_slice, h->thread_context,
4635 NULL, context_count, sizeof(void *));
4636
4637 /* pull back stuff from slices to master context */
4638 hx = h->thread_context[context_count - 1];
4639 h->mb_x = hx->mb_x;
4640 h->mb_y = hx->mb_y;
4641 h->droppable = hx->droppable;
4642 h->picture_structure = hx->picture_structure;
4643 if (CONFIG_ERROR_RESILIENCE) {
4644 for (i = 1; i < context_count; i++)
4645 h->er.error_count += h->thread_context[i]->er.error_count;
4646 }
4647 }
4648
4649 return 0;
4650}
4651
4652static const uint8_t start_code[] = { 0x00, 0x00, 0x01 };
4653
4654static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size,
4655 int parse_extradata)
4656{
4657 AVCodecContext *const avctx = h->avctx;
4658 H264Context *hx; ///< thread context
4659 int buf_index;
4660 int context_count;
4661 int next_avc;
4662 int pass = !(avctx->active_thread_type & FF_THREAD_FRAME);
4663 int nals_needed = 0; ///< number of NALs that need decoding before the next frame thread starts
4664 int nal_index;
4665 int idr_cleared=0;
4666 int first_slice = 0;
4667 int ret = 0;
4668
4669 h->nal_unit_type= 0;
4670
4671 if(!h->slice_context_count)
4672 h->slice_context_count= 1;
4673 h->max_contexts = h->slice_context_count;
4674 if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS)) {
4675 h->current_slice = 0;
4676 if (!h->first_field)
4677 h->cur_pic_ptr = NULL;
4678 ff_h264_reset_sei(h);
4679 }
4680
4681 if (h->nal_length_size == 4) {
4682 if (buf_size > 8 && AV_RB32(buf) == 1 && AV_RB32(buf+5) > (unsigned)buf_size) {
4683 h->is_avc = 0;
4684 }else if(buf_size > 3 && AV_RB32(buf) > 1 && AV_RB32(buf) <= (unsigned)buf_size)
4685 h->is_avc = 1;
4686 }
4687
4688 for (; pass <= 1; pass++) {
4689 buf_index = 0;
4690 context_count = 0;
4691 next_avc = h->is_avc ? 0 : buf_size;
4692 nal_index = 0;
4693 for (;;) {
4694 int consumed;
4695 int dst_length;
4696 int bit_length;
4697 const uint8_t *ptr;
4698 int i, nalsize = 0;
4699 int err;
4700
4701 if (buf_index >= next_avc) {
4702 if (buf_index >= buf_size - h->nal_length_size)
4703 break;
4704 nalsize = 0;
4705 for (i = 0; i < h->nal_length_size; i++)
4706 nalsize = (nalsize << 8) | buf[buf_index++];
4707 if (nalsize <= 0 || nalsize > buf_size - buf_index) {
4708 av_log(h->avctx, AV_LOG_ERROR,
4709 "AVC: nal size %d\n", nalsize);
4710 break;
4711 }
4712 next_avc = buf_index + nalsize;
4713 } else {
4714 // start code prefix search
4715 for (; buf_index + 3 < next_avc; buf_index++)
4716 // This should always succeed in the first iteration.
4717 if (buf[buf_index] == 0 &&
4718 buf[buf_index + 1] == 0 &&
4719 buf[buf_index + 2] == 1)
4720 break;
4721
4722 if (buf_index + 3 >= buf_size) {
4723 buf_index = buf_size;
4724 break;
4725 }
4726
4727 buf_index += 3;
4728 if (buf_index >= next_avc)
4729 continue;
4730 }
4731
4732 hx = h->thread_context[context_count];
4733
4734 ptr = ff_h264_decode_nal(hx, buf + buf_index, &dst_length,
4735 &consumed, next_avc - buf_index);
4736 if (ptr == NULL || dst_length < 0) {
4737 ret = -1;
4738 goto end;
4739 }
4740 i = buf_index + consumed;
4741 if ((h->workaround_bugs & FF_BUG_AUTODETECT) && i + 3 < next_avc &&
4742 buf[i] == 0x00 && buf[i + 1] == 0x00 &&
4743 buf[i + 2] == 0x01 && buf[i + 3] == 0xE0)
4744 h->workaround_bugs |= FF_BUG_TRUNCATED;
4745
4746 if (!(h->workaround_bugs & FF_BUG_TRUNCATED))
4747 while(dst_length > 0 && ptr[dst_length - 1] == 0)
4748 dst_length--;
4749 bit_length = !dst_length ? 0
4750 : (8 * dst_length -
4751 decode_rbsp_trailing(h, ptr + dst_length - 1));
4752
4753 if (h->avctx->debug & FF_DEBUG_STARTCODE)
4754 av_log(h->avctx, AV_LOG_DEBUG, "NAL %d/%d at %d/%d length %d pass %d\n", hx->nal_unit_type, hx->nal_ref_idc, buf_index, buf_size, dst_length, pass);
4755
4756 if (h->is_avc && (nalsize != consumed) && nalsize)
4757 av_log(h->avctx, AV_LOG_DEBUG,
4758 "AVC: Consumed only %d bytes instead of %d\n",
4759 consumed, nalsize);
4760
4761 buf_index += consumed;
4762 nal_index++;
4763
4764 if (pass == 0) {
4765 /* packets can sometimes contain multiple PPS/SPS,
4766 * e.g. two PAFF field pictures in one packet, or a demuxer
4767 * which splits NALs strangely if so, when frame threading we
4768 * can't start the next thread until we've read all of them */
4769 switch (hx->nal_unit_type) {
4770 case NAL_SPS:
4771 case NAL_PPS:
4772 nals_needed = nal_index;
4773 break;
4774 case NAL_DPA:
4775 case NAL_IDR_SLICE:
4776 case NAL_SLICE:
4777 init_get_bits(&hx->gb, ptr, bit_length);
4778 if (!get_ue_golomb(&hx->gb) || !first_slice)
4779 nals_needed = nal_index;
4780 if (!first_slice)
4781 first_slice = hx->nal_unit_type;
4782 }
4783 continue;
4784 }
4785
4786 if (!first_slice)
4787 switch (hx->nal_unit_type) {
4788 case NAL_DPA:
4789 case NAL_IDR_SLICE:
4790 case NAL_SLICE:
4791 first_slice = hx->nal_unit_type;
4792 }
4793
4794 if (avctx->skip_frame >= AVDISCARD_NONREF &&
4795 h->nal_ref_idc == 0 &&
4796 h->nal_unit_type != NAL_SEI)
4797 continue;
4798
4799again:
4800 /* Ignore per frame NAL unit type during extradata
4801 * parsing. Decoding slices is not possible in codec init
4802 * with frame-mt */
4803 if (parse_extradata) {
4804 switch (hx->nal_unit_type) {
4805 case NAL_IDR_SLICE:
4806 case NAL_SLICE:
4807 case NAL_DPA:
4808 case NAL_DPB:
4809 case NAL_DPC:
4810 av_log(h->avctx, AV_LOG_WARNING,
4811 "Ignoring NAL %d in global header/extradata\n",
4812 hx->nal_unit_type);
4813 // fall through to next case
4814 case NAL_AUXILIARY_SLICE:
4815 hx->nal_unit_type = NAL_FF_IGNORE;
4816 }
4817 }
4818
4819 err = 0;
4820
4821 switch (hx->nal_unit_type) {
4822 case NAL_IDR_SLICE:
4823 if (first_slice != NAL_IDR_SLICE) {
4824 av_log(h->avctx, AV_LOG_ERROR,
4825 "Invalid mix of idr and non-idr slices\n");
4826 ret = -1;
4827 goto end;
4828 }
4829 if(!idr_cleared)
4830 idr(h); // FIXME ensure we don't lose some frames if there is reordering
4831 idr_cleared = 1;
4832 case NAL_SLICE:
4833 init_get_bits(&hx->gb, ptr, bit_length);
4834 hx->intra_gb_ptr =
4835 hx->inter_gb_ptr = &hx->gb;
4836 hx->data_partitioning = 0;
4837
4838 if ((err = decode_slice_header(hx, h)))
4839 break;
4840
4841 if (h->sei_recovery_frame_cnt >= 0 && (h->frame_num != h->sei_recovery_frame_cnt || hx->slice_type_nos != AV_PICTURE_TYPE_I))
4842 h->valid_recovery_point = 1;
4843
4844 if ( h->sei_recovery_frame_cnt >= 0
4845 && ( h->recovery_frame<0
4846 || ((h->recovery_frame - h->frame_num) & ((1 << h->sps.log2_max_frame_num)-1)) > h->sei_recovery_frame_cnt)) {
4847 h->recovery_frame = (h->frame_num + h->sei_recovery_frame_cnt) %
4848 (1 << h->sps.log2_max_frame_num);
4849
4850 if (!h->valid_recovery_point)
4851 h->recovery_frame = h->frame_num;
4852 }
4853
4854 h->cur_pic_ptr->f.key_frame |=
4855 (hx->nal_unit_type == NAL_IDR_SLICE);
4856
4857 if (h->recovery_frame == h->frame_num) {
4858 h->cur_pic_ptr->sync |= 1;
4859 h->recovery_frame = -1;
4860 }
4861
4862 h->sync |= !!h->cur_pic_ptr->f.key_frame;
4863 h->sync |= 3*!!(avctx->flags2 & CODEC_FLAG2_SHOW_ALL);
4864 h->cur_pic_ptr->sync |= h->sync;
4865
4866 if (h->current_slice == 1) {
4867 if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS))
4868 decode_postinit(h, nal_index >= nals_needed);
4869
4870 if (h->avctx->hwaccel &&
4871 (ret = h->avctx->hwaccel->start_frame(h->avctx, NULL, 0)) < 0)
4872 return ret;
4873 if (CONFIG_H264_VDPAU_DECODER &&
4874 h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU)
4875 ff_vdpau_h264_picture_start(h);
4876 }
4877
4878 if (hx->redundant_pic_count == 0 &&
4879 (avctx->skip_frame < AVDISCARD_NONREF ||
4880 hx->nal_ref_idc) &&
4881 (avctx->skip_frame < AVDISCARD_BIDIR ||
4882 hx->slice_type_nos != AV_PICTURE_TYPE_B) &&
4883 (avctx->skip_frame < AVDISCARD_NONKEY ||
4884 hx->slice_type_nos == AV_PICTURE_TYPE_I) &&
4885 avctx->skip_frame < AVDISCARD_ALL) {
4886 if (avctx->hwaccel) {
4887 ret = avctx->hwaccel->decode_slice(avctx,
4888 &buf[buf_index - consumed],
4889 consumed);
4890 if (ret < 0)
4891 return ret;
4892 } else if (CONFIG_H264_VDPAU_DECODER &&
4893 h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) {
4894 ff_vdpau_add_data_chunk(h->cur_pic_ptr->f.data[0],
4895 start_code,
4896 sizeof(start_code));
4897 ff_vdpau_add_data_chunk(h->cur_pic_ptr->f.data[0],
4898 &buf[buf_index - consumed],
4899 consumed);
4900 } else
4901 context_count++;
4902 }
4903 break;
4904 case NAL_DPA:
4905 init_get_bits(&hx->gb, ptr, bit_length);
4906 hx->intra_gb_ptr =
4907 hx->inter_gb_ptr = NULL;
4908
4909 if ((err = decode_slice_header(hx, h)) < 0)
4910 break;
4911
4912 hx->data_partitioning = 1;
4913 break;
4914 case NAL_DPB:
4915 init_get_bits(&hx->intra_gb, ptr, bit_length);
4916 hx->intra_gb_ptr = &hx->intra_gb;
4917 break;
4918 case NAL_DPC:
4919 init_get_bits(&hx->inter_gb, ptr, bit_length);
4920 hx->inter_gb_ptr = &hx->inter_gb;
4921
4922 av_log(h->avctx, AV_LOG_ERROR, "Partitioned H.264 support is incomplete\n");
4923 break;
4924
4925 if (hx->redundant_pic_count == 0 &&
4926 hx->intra_gb_ptr &&
4927 hx->data_partitioning &&
4928 h->cur_pic_ptr && h->context_initialized &&
4929 (avctx->skip_frame < AVDISCARD_NONREF || hx->nal_ref_idc) &&
4930 (avctx->skip_frame < AVDISCARD_BIDIR ||
4931 hx->slice_type_nos != AV_PICTURE_TYPE_B) &&
4932 (avctx->skip_frame < AVDISCARD_NONKEY ||
4933 hx->slice_type_nos == AV_PICTURE_TYPE_I) &&
4934 avctx->skip_frame < AVDISCARD_ALL)
4935 context_count++;
4936 break;
4937 case NAL_SEI:
4938 init_get_bits(&h->gb, ptr, bit_length);
4939 ff_h264_decode_sei(h);
4940 break;
4941 case NAL_SPS:
4942 init_get_bits(&h->gb, ptr, bit_length);
4943 if (ff_h264_decode_seq_parameter_set(h) < 0 && (h->is_avc ? nalsize : 1)) {
4944 av_log(h->avctx, AV_LOG_DEBUG,
4945 "SPS decoding failure, trying again with the complete NAL\n");
4946 if (h->is_avc)
4947 av_assert0(next_avc - buf_index + consumed == nalsize);
4948 if ((next_avc - buf_index + consumed - 1) >= INT_MAX/8)
4949 break;
4950 init_get_bits(&h->gb, &buf[buf_index + 1 - consumed],
4951 8*(next_avc - buf_index + consumed - 1));
4952 ff_h264_decode_seq_parameter_set(h);
4953 }
4954
4955 break;
4956 case NAL_PPS:
4957 init_get_bits(&h->gb, ptr, bit_length);
4958 ff_h264_decode_picture_parameter_set(h, bit_length);
4959 break;
4960 case NAL_AUD:
4961 case NAL_END_SEQUENCE:
4962 case NAL_END_STREAM:
4963 case NAL_FILLER_DATA:
4964 case NAL_SPS_EXT:
4965 case NAL_AUXILIARY_SLICE:
4966 break;
4967 case NAL_FF_IGNORE:
4968 break;
4969 default:
4970 av_log(avctx, AV_LOG_DEBUG, "Unknown NAL code: %d (%d bits)\n",
4971 hx->nal_unit_type, bit_length);
4972 }
4973
4974 if (context_count == h->max_contexts) {
4975 execute_decode_slices(h, context_count);
4976 context_count = 0;
4977 }
4978
4979 if (err < 0)
4980 av_log(h->avctx, AV_LOG_ERROR, "decode_slice_header error\n");
4981 else if (err == 1) {
4982 /* Slice could not be decoded in parallel mode, copy down
4983 * NAL unit stuff to context 0 and restart. Note that
4984 * rbsp_buffer is not transferred, but since we no longer
4985 * run in parallel mode this should not be an issue. */
4986 h->nal_unit_type = hx->nal_unit_type;
4987 h->nal_ref_idc = hx->nal_ref_idc;
4988 hx = h;
4989 goto again;
4990 }
4991 }
4992 }
4993 if (context_count)
4994 execute_decode_slices(h, context_count);
4995
4996end:
4997 /* clean up */
4998 if (h->cur_pic_ptr && !h->droppable) {
4999 ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX,
5000 h->picture_structure == PICT_BOTTOM_FIELD);
5001 }
5002
5003 return (ret < 0) ? ret : buf_index;
5004}
5005
5006/**
5007 * Return the number of bytes consumed for building the current frame.
5008 */
5009static int get_consumed_bytes(int pos, int buf_size)
5010{
5011 if (pos == 0)
5012 pos = 1; // avoid infinite loops (i doubt that is needed but ...)
5013 if (pos + 10 > buf_size)
5014 pos = buf_size; // oops ;)
5015
5016 return pos;
5017}
5018
5019static int output_frame(H264Context *h, AVFrame *dst, Picture *srcp)
5020{
5021 AVFrame *src = &srcp->f;
5022 int i;
5023 int ret = av_frame_ref(dst, src);
5024 if (ret < 0)
5025 return ret;
5026
5027 av_dict_set(&dst->metadata, "stereo_mode", ff_h264_sei_stereo_mode(h), 0);
5028
5029 if (!srcp->crop)
5030 return 0;
5031
5032 for (i = 0; i < 3; i++) {
5033 int hshift = (i > 0) ? h->chroma_x_shift : 0;
5034 int vshift = (i > 0) ? h->chroma_y_shift : 0;
5035 int off = ((srcp->crop_left >> hshift) << h->pixel_shift) +
5036 (srcp->crop_top >> vshift) * dst->linesize[i];
5037 dst->data[i] += off;
5038 }
5039 return 0;
5040}
5041
5042static int decode_frame(AVCodecContext *avctx, void *data,
5043 int *got_frame, AVPacket *avpkt)
5044{
5045 const uint8_t *buf = avpkt->data;
5046 int buf_size = avpkt->size;
5047 H264Context *h = avctx->priv_data;
5048 AVFrame *pict = data;
5049 int buf_index = 0;
5050 Picture *out;
5051 int i, out_idx;
5052 int ret;
5053
5054 h->flags = avctx->flags;
5055
5056 /* end of stream, output what is still in the buffers */
5057 if (buf_size == 0) {
5058 out:
5059
5060 h->cur_pic_ptr = NULL;
5061 h->first_field = 0;
5062
5063 // FIXME factorize this with the output code below
5064 out = h->delayed_pic[0];
5065 out_idx = 0;
5066 for (i = 1;
5067 h->delayed_pic[i] &&
5068 !h->delayed_pic[i]->f.key_frame &&
5069 !h->delayed_pic[i]->mmco_reset;
5070 i++)
5071 if (h->delayed_pic[i]->poc < out->poc) {
5072 out = h->delayed_pic[i];
5073 out_idx = i;
5074 }
5075
5076 for (i = out_idx; h->delayed_pic[i]; i++)
5077 h->delayed_pic[i] = h->delayed_pic[i + 1];
5078
5079 if (out) {
5080 out->reference &= ~DELAYED_PIC_REF;
5081 ret = output_frame(h, pict, out);
5082 if (ret < 0)
5083 return ret;
5084 *got_frame = 1;
5085 }
5086
5087 return buf_index;
5088 }
5089 if(h->is_avc && buf_size >= 9 && buf[0]==1 && buf[2]==0 && (buf[4]&0xFC)==0xFC && (buf[5]&0x1F) && buf[8]==0x67){
5090 int cnt= buf[5]&0x1f;
5091 const uint8_t *p= buf+6;
5092 while(cnt--){
5093 int nalsize= AV_RB16(p) + 2;
5094 if(nalsize > buf_size - (p-buf) || p[2]!=0x67)
5095 goto not_extra;
5096 p += nalsize;
5097 }
5098 cnt = *(p++);
5099 if(!cnt)
5100 goto not_extra;
5101 while(cnt--){
5102 int nalsize= AV_RB16(p) + 2;
5103 if(nalsize > buf_size - (p-buf) || p[2]!=0x68)
5104 goto not_extra;
5105 p += nalsize;
5106 }
5107
5108 return ff_h264_decode_extradata(h, buf, buf_size);
5109 }
5110not_extra:
5111
5112 buf_index = decode_nal_units(h, buf, buf_size, 0);
5113 if (buf_index < 0)
5114 return AVERROR_INVALIDDATA;
5115
5116 if (!h->cur_pic_ptr && h->nal_unit_type == NAL_END_SEQUENCE) {
5117 av_assert0(buf_index <= buf_size);
5118 goto out;
5119 }
5120
5121 if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS) && !h->cur_pic_ptr) {
5122 if (avctx->skip_frame >= AVDISCARD_NONREF ||
5123 buf_size >= 4 && !memcmp("Q264", buf, 4))
5124 return buf_size;
5125 av_log(avctx, AV_LOG_ERROR, "no frame!\n");
5126 return AVERROR_INVALIDDATA;
5127 }
5128
5129 if (!(avctx->flags2 & CODEC_FLAG2_CHUNKS) ||
5130 (h->mb_y >= h->mb_height && h->mb_height)) {
5131 if (avctx->flags2 & CODEC_FLAG2_CHUNKS)
5132 decode_postinit(h, 1);
5133
5134 field_end(h, 0);
5135
5136 /* Wait for second field. */
5137 *got_frame = 0;
5138 if (h->next_output_pic && (h->next_output_pic->sync || h->sync>1)) {
5139 ret = output_frame(h, pict, h->next_output_pic);
5140 if (ret < 0)
5141 return ret;
5142 *got_frame = 1;
5143 if (CONFIG_MPEGVIDEO) {
5144 ff_print_debug_info2(h->avctx, h->next_output_pic, pict, h->er.mbskip_table,
5145 &h->low_delay,
5146 h->mb_width, h->mb_height, h->mb_stride, 1);
5147 }
5148 }
5149 }
5150
5151 assert(pict->data[0] || !*got_frame);
5152
5153 return get_consumed_bytes(buf_index, buf_size);
5154}
5155
5156av_cold void ff_h264_free_context(H264Context *h)
5157{
5158 int i;
5159
5160 free_tables(h, 1); // FIXME cleanup init stuff perhaps
5161
5162 for (i = 0; i < MAX_SPS_COUNT; i++)
5163 av_freep(h->sps_buffers + i);
5164
5165 for (i = 0; i < MAX_PPS_COUNT; i++)
5166 av_freep(h->pps_buffers + i);
5167}
5168
5169static av_cold int h264_decode_end(AVCodecContext *avctx)
5170{
5171 H264Context *h = avctx->priv_data;
5172
5173 ff_h264_remove_all_refs(h);
5174 ff_h264_free_context(h);
5175
5176 unref_picture(h, &h->cur_pic);
5177
5178 return 0;
5179}
5180
5181static const AVProfile profiles[] = {
5182 { FF_PROFILE_H264_BASELINE, "Baseline" },
5183 { FF_PROFILE_H264_CONSTRAINED_BASELINE, "Constrained Baseline" },
5184 { FF_PROFILE_H264_MAIN, "Main" },
5185 { FF_PROFILE_H264_EXTENDED, "Extended" },
5186 { FF_PROFILE_H264_HIGH, "High" },
5187 { FF_PROFILE_H264_HIGH_10, "High 10" },
5188 { FF_PROFILE_H264_HIGH_10_INTRA, "High 10 Intra" },
5189 { FF_PROFILE_H264_HIGH_422, "High 4:2:2" },
5190 { FF_PROFILE_H264_HIGH_422_INTRA, "High 4:2:2 Intra" },
5191 { FF_PROFILE_H264_HIGH_444, "High 4:4:4" },
5192 { FF_PROFILE_H264_HIGH_444_PREDICTIVE, "High 4:4:4 Predictive" },
5193 { FF_PROFILE_H264_HIGH_444_INTRA, "High 4:4:4 Intra" },
5194 { FF_PROFILE_H264_CAVLC_444, "CAVLC 4:4:4" },
5195 { FF_PROFILE_UNKNOWN },
5196};
5197
5198static const AVOption h264_options[] = {
5199 {"is_avc", "is avc", offsetof(H264Context, is_avc), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 1, 0},
5200 {"nal_length_size", "nal_length_size", offsetof(H264Context, nal_length_size), FF_OPT_TYPE_INT, {.i64 = 0}, 0, 4, 0},
5201 {NULL}
5202};
5203
5204static const AVClass h264_class = {
5205 .class_name = "H264 Decoder",
5206 .item_name = av_default_item_name,
5207 .option = h264_options,
5208 .version = LIBAVUTIL_VERSION_INT,
5209};
5210
5211static const AVClass h264_vdpau_class = {
5212 .class_name = "H264 VDPAU Decoder",
5213 .item_name = av_default_item_name,
5214 .option = h264_options,
5215 .version = LIBAVUTIL_VERSION_INT,
5216};
5217
5218AVCodec ff_h264_decoder = {
5219 .name = "h264",
5220 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10"),
5221 .type = AVMEDIA_TYPE_VIDEO,
5222 .id = AV_CODEC_ID_H264,
5223 .priv_data_size = sizeof(H264Context),
5224 .init = ff_h264_decode_init,
5225 .close = h264_decode_end,
5226 .decode = decode_frame,
5227 .capabilities = /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 |
5228 CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS |
5229 CODEC_CAP_FRAME_THREADS,
5230 .flush = flush_dpb,
5231 .init_thread_copy = ONLY_IF_THREADS_ENABLED(decode_init_thread_copy),
5232 .update_thread_context = ONLY_IF_THREADS_ENABLED(decode_update_thread_context),
5233 .profiles = NULL_IF_CONFIG_SMALL(profiles),
5234 .priv_class = &h264_class,
5235};
5236
5237#if CONFIG_H264_VDPAU_DECODER
5238AVCodec ff_h264_vdpau_decoder = {
5239 .name = "h264_vdpau",
5240 .long_name = NULL_IF_CONFIG_SMALL("H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)"),
5241 .type = AVMEDIA_TYPE_VIDEO,
5242 .id = AV_CODEC_ID_H264,
5243 .priv_data_size = sizeof(H264Context),
5244 .init = ff_h264_decode_init,
5245 .close = h264_decode_end,
5246 .decode = decode_frame,
5247 .capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
5248 .flush = flush_dpb,
5249 .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_VDPAU_H264,
5250 AV_PIX_FMT_NONE},
5251 .profiles = NULL_IF_CONFIG_SMALL(profiles),
5252 .priv_class = &h264_vdpau_class,
5253};
5254#endif
5255
generated by cgit at 2024-05-17 05:47:47 (GMT)