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path: root/libavcodec/dxva2_vc1.c (plain)
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1/*
2 * DXVA2 WMV3/VC-1 HW acceleration.
3 *
4 * copyright (c) 2010 Laurent Aimar
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23#include "mpegutils.h"
24#include "vc1.h"
25#include "vc1data.h"
26
27// The headers above may include w32threads.h, which uses the original
28// _WIN32_WINNT define, while dxva2_internal.h redefines it to target a
29// potentially newer version.
30#include "dxva2_internal.h"
31
32#define MAX_SLICES 1024
33struct dxva2_picture_context {
34 DXVA_PictureParameters pp;
35 unsigned slice_count;
36 DXVA_SliceInfo slice[MAX_SLICES];
37
38 const uint8_t *bitstream;
39 unsigned bitstream_size;
40};
41
42static void fill_picture_parameters(AVCodecContext *avctx,
43 AVDXVAContext *ctx, const VC1Context *v,
44 DXVA_PictureParameters *pp)
45{
46 const MpegEncContext *s = &v->s;
47 const Picture *current_picture = s->current_picture_ptr;
48 int intcomp = 0;
49
50 // determine if intensity compensation is needed
51 if (s->pict_type == AV_PICTURE_TYPE_P) {
52 if ((v->fcm == ILACE_FRAME && v->intcomp) || (v->fcm != ILACE_FRAME && v->mv_mode == MV_PMODE_INTENSITY_COMP)) {
53 if (v->lumscale != 32 || v->lumshift != 0 || (s->picture_structure != PICT_FRAME && (v->lumscale2 != 32 || v->lumshift2 != 0)))
54 intcomp = 1;
55 }
56 }
57
58 memset(pp, 0, sizeof(*pp));
59 pp->wDecodedPictureIndex =
60 pp->wDeblockedPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, current_picture->f);
61 if (s->pict_type != AV_PICTURE_TYPE_I && !v->bi_type)
62 pp->wForwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->last_picture.f);
63 else
64 pp->wForwardRefPictureIndex = 0xffff;
65 if (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type)
66 pp->wBackwardRefPictureIndex = ff_dxva2_get_surface_index(avctx, ctx, s->next_picture.f);
67 else
68 pp->wBackwardRefPictureIndex = 0xffff;
69 if (v->profile == PROFILE_ADVANCED) {
70 /* It is the cropped width/height -1 of the frame */
71 pp->wPicWidthInMBminus1 = avctx->width - 1;
72 pp->wPicHeightInMBminus1= avctx->height - 1;
73 } else {
74 /* It is the coded width/height in macroblock -1 of the frame */
75 pp->wPicWidthInMBminus1 = s->mb_width - 1;
76 pp->wPicHeightInMBminus1= s->mb_height - 1;
77 }
78 pp->bMacroblockWidthMinus1 = 15;
79 pp->bMacroblockHeightMinus1 = 15;
80 pp->bBlockWidthMinus1 = 7;
81 pp->bBlockHeightMinus1 = 7;
82 pp->bBPPminus1 = 7;
83 if (s->picture_structure & PICT_TOP_FIELD)
84 pp->bPicStructure |= 0x01;
85 if (s->picture_structure & PICT_BOTTOM_FIELD)
86 pp->bPicStructure |= 0x02;
87 pp->bSecondField = v->interlace && v->fcm == ILACE_FIELD && v->second_field;
88 pp->bPicIntra = s->pict_type == AV_PICTURE_TYPE_I || v->bi_type;
89 pp->bPicBackwardPrediction = s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type;
90 pp->bBidirectionalAveragingMode = (1 << 7) |
91 ((DXVA_CONTEXT_CFG_INTRARESID(avctx, ctx) != 0) << 6) |
92 ((DXVA_CONTEXT_CFG_RESIDACCEL(avctx, ctx) != 0) << 5) |
93 (intcomp << 4) |
94 ((v->profile == PROFILE_ADVANCED) << 3);
95 pp->bMVprecisionAndChromaRelation = ((v->mv_mode == MV_PMODE_1MV_HPEL_BILIN) << 3) |
96 (1 << 2) |
97 (0 << 1) |
98 (!s->quarter_sample );
99 pp->bChromaFormat = v->chromaformat;
100 DXVA_CONTEXT_REPORT_ID(avctx, ctx)++;
101 if (DXVA_CONTEXT_REPORT_ID(avctx, ctx) >= (1 << 16))
102 DXVA_CONTEXT_REPORT_ID(avctx, ctx) = 1;
103 pp->bPicScanFixed = DXVA_CONTEXT_REPORT_ID(avctx, ctx) >> 8;
104 pp->bPicScanMethod = DXVA_CONTEXT_REPORT_ID(avctx, ctx) & 0xff;
105 pp->bPicReadbackRequests = 0;
106 pp->bRcontrol = v->rnd;
107 pp->bPicSpatialResid8 = (v->panscanflag << 7) |
108 (v->refdist_flag << 6) |
109 (s->loop_filter << 5) |
110 (v->fastuvmc << 4) |
111 (v->extended_mv << 3) |
112 (v->dquant << 1) |
113 (v->vstransform );
114 pp->bPicOverflowBlocks = (v->quantizer_mode << 6) |
115 (v->multires << 5) |
116 (v->resync_marker << 4) |
117 (v->rangered << 3) |
118 (s->max_b_frames );
119 pp->bPicExtrapolation = (!v->interlace || v->fcm == PROGRESSIVE) ? 1 : 2;
120 pp->bPicDeblocked = ((!pp->bPicBackwardPrediction && v->overlap) << 6) |
121 ((v->profile != PROFILE_ADVANCED && v->rangeredfrm) << 5) |
122 (s->loop_filter << 1);
123 pp->bPicDeblockConfined = (v->postprocflag << 7) |
124 (v->broadcast << 6) |
125 (v->interlace << 5) |
126 (v->tfcntrflag << 4) |
127 (v->finterpflag << 3) |
128 ((s->pict_type != AV_PICTURE_TYPE_B) << 2) |
129 (v->psf << 1) |
130 (v->extended_dmv );
131 if (s->pict_type != AV_PICTURE_TYPE_I)
132 pp->bPic4MVallowed = v->mv_mode == MV_PMODE_MIXED_MV ||
133 (v->mv_mode == MV_PMODE_INTENSITY_COMP &&
134 v->mv_mode2 == MV_PMODE_MIXED_MV);
135 if (v->profile == PROFILE_ADVANCED)
136 pp->bPicOBMC = (v->range_mapy_flag << 7) |
137 (v->range_mapy << 4) |
138 (v->range_mapuv_flag << 3) |
139 (v->range_mapuv );
140 pp->bPicBinPB = 0;
141 pp->bMV_RPS = (v->fcm == ILACE_FIELD && pp->bPicBackwardPrediction) ? v->refdist + 9 : 0;
142 pp->bReservedBits = v->pq;
143 if (s->picture_structure == PICT_FRAME) {
144 if (intcomp) {
145 pp->wBitstreamFcodes = v->lumscale;
146 pp->wBitstreamPCEelements = v->lumshift;
147 } else {
148 pp->wBitstreamFcodes = 32;
149 pp->wBitstreamPCEelements = 0;
150 }
151 } else {
152 /* Syntax: (top_field_param << 8) | bottom_field_param */
153 if (intcomp) {
154 pp->wBitstreamFcodes = (v->lumscale << 8) | v->lumscale2;
155 pp->wBitstreamPCEelements = (v->lumshift << 8) | v->lumshift2;
156 } else {
157 pp->wBitstreamFcodes = (32 << 8) | 32;
158 pp->wBitstreamPCEelements = 0;
159 }
160 }
161 pp->bBitstreamConcealmentNeed = 0;
162 pp->bBitstreamConcealmentMethod = 0;
163}
164
165static void fill_slice(AVCodecContext *avctx, DXVA_SliceInfo *slice,
166 unsigned position, unsigned size)
167{
168 const VC1Context *v = avctx->priv_data;
169 const MpegEncContext *s = &v->s;
170
171 memset(slice, 0, sizeof(*slice));
172 slice->wHorizontalPosition = 0;
173 slice->wVerticalPosition = s->mb_y;
174 slice->dwSliceBitsInBuffer = 8 * size;
175 slice->dwSliceDataLocation = position;
176 slice->bStartCodeBitOffset = 0;
177 slice->bReservedBits = (s->pict_type == AV_PICTURE_TYPE_B && !v->bi_type) ? v->bfraction_lut_index + 9 : 0;
178 slice->wMBbitOffset = v->p_frame_skipped ? 0xffff : get_bits_count(&s->gb) + (avctx->codec_id == AV_CODEC_ID_VC1 ? 32 : 0);
179 /* XXX We store the index of the first MB and it will be fixed later */
180 slice->wNumberMBsInSlice = (s->mb_y >> v->field_mode) * s->mb_width + s->mb_x;
181 slice->wQuantizerScaleCode = v->pq;
182 slice->wBadSliceChopping = 0;
183}
184
185static int commit_bitstream_and_slice_buffer(AVCodecContext *avctx,
186 DECODER_BUFFER_DESC *bs,
187 DECODER_BUFFER_DESC *sc)
188{
189 const VC1Context *v = avctx->priv_data;
190 AVDXVAContext *ctx = avctx->hwaccel_context;
191 const MpegEncContext *s = &v->s;
192 struct dxva2_picture_context *ctx_pic = s->current_picture_ptr->hwaccel_picture_private;
193
194 static const uint8_t start_code[] = { 0, 0, 1, 0x0d };
195 const unsigned start_code_size = avctx->codec_id == AV_CODEC_ID_VC1 ? sizeof(start_code) : 0;
196 const unsigned mb_count = s->mb_width * (s->mb_height >> v->field_mode);
197 DXVA_SliceInfo *slice = NULL;
198 void *dxva_data_ptr;
199 uint8_t *dxva_data, *current, *end;
200 unsigned dxva_size;
201 unsigned padding;
202 unsigned i;
203 unsigned type;
204
205#if CONFIG_D3D11VA
206 if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
207 type = D3D11_VIDEO_DECODER_BUFFER_BITSTREAM;
208 if (FAILED(ID3D11VideoContext_GetDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context,
209 D3D11VA_CONTEXT(ctx)->decoder,
210 type,
211 &dxva_size, &dxva_data_ptr)))
212 return -1;
213 }
214#endif
215#if CONFIG_DXVA2
216 if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
217 type = DXVA2_BitStreamDateBufferType;
218 if (FAILED(IDirectXVideoDecoder_GetBuffer(DXVA2_CONTEXT(ctx)->decoder,
219 type,
220 &dxva_data_ptr, &dxva_size)))
221 return -1;
222 }
223#endif
224
225 dxva_data = dxva_data_ptr;
226 current = dxva_data;
227 end = dxva_data + dxva_size;
228
229 for (i = 0; i < ctx_pic->slice_count; i++) {
230 unsigned position, size;
231 slice = &ctx_pic->slice[i];
232 position = slice->dwSliceDataLocation;
233 size = slice->dwSliceBitsInBuffer / 8;
234 if (start_code_size + size > end - current) {
235 av_log(avctx, AV_LOG_ERROR, "Failed to build bitstream");
236 break;
237 }
238 slice->dwSliceDataLocation = current - dxva_data;
239
240 if (i < ctx_pic->slice_count - 1)
241 slice->wNumberMBsInSlice =
242 slice[1].wNumberMBsInSlice - slice[0].wNumberMBsInSlice;
243 else
244 slice->wNumberMBsInSlice =
245 mb_count - slice[0].wNumberMBsInSlice;
246
247 /* write the appropriate frame, field or slice start code */
248 if (start_code_size) {
249 memcpy(current, start_code, start_code_size);
250 if (i == 0 && v->second_field)
251 current[3] = 0x0c;
252 else if (i > 0)
253 current[3] = 0x0b;
254
255 current += start_code_size;
256 slice->dwSliceBitsInBuffer += start_code_size * 8;
257 }
258
259 memcpy(current, &ctx_pic->bitstream[position], size);
260 current += size;
261 }
262 padding = FFMIN(128 - ((current - dxva_data) & 127), end - current);
263 if (slice && padding > 0) {
264 memset(current, 0, padding);
265 current += padding;
266 slice->dwSliceBitsInBuffer += padding * 8;
267 }
268
269#if CONFIG_D3D11VA
270 if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD)
271 if (FAILED(ID3D11VideoContext_ReleaseDecoderBuffer(D3D11VA_CONTEXT(ctx)->video_context, D3D11VA_CONTEXT(ctx)->decoder, type)))
272 return -1;
273#endif
274#if CONFIG_DXVA2
275 if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD)
276 if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(DXVA2_CONTEXT(ctx)->decoder, type)))
277 return -1;
278#endif
279 if (i < ctx_pic->slice_count)
280 return -1;
281
282#if CONFIG_D3D11VA
283 if (avctx->pix_fmt == AV_PIX_FMT_D3D11VA_VLD) {
284 D3D11_VIDEO_DECODER_BUFFER_DESC *dsc11 = bs;
285 memset(dsc11, 0, sizeof(*dsc11));
286 dsc11->BufferType = type;
287 dsc11->DataSize = current - dxva_data;
288 dsc11->NumMBsInBuffer = mb_count;
289
290 type = D3D11_VIDEO_DECODER_BUFFER_SLICE_CONTROL;
291 }
292#endif
293#if CONFIG_DXVA2
294 if (avctx->pix_fmt == AV_PIX_FMT_DXVA2_VLD) {
295 DXVA2_DecodeBufferDesc *dsc2 = bs;
296 memset(dsc2, 0, sizeof(*dsc2));
297 dsc2->CompressedBufferType = type;
298 dsc2->DataSize = current - dxva_data;
299 dsc2->NumMBsInBuffer = mb_count;
300
301 type = DXVA2_SliceControlBufferType;
302 }
303#endif
304
305 return ff_dxva2_commit_buffer(avctx, ctx, sc,
306 type,
307 ctx_pic->slice,
308 ctx_pic->slice_count * sizeof(*ctx_pic->slice),
309 mb_count);
310}
311
312static int dxva2_vc1_start_frame(AVCodecContext *avctx,
313 av_unused const uint8_t *buffer,
314 av_unused uint32_t size)
315{
316 const VC1Context *v = avctx->priv_data;
317 AVDXVAContext *ctx = avctx->hwaccel_context;
318 struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
319
320 if (!DXVA_CONTEXT_VALID(avctx, ctx))
321 return -1;
322 assert(ctx_pic);
323
324 fill_picture_parameters(avctx, ctx, v, &ctx_pic->pp);
325
326 ctx_pic->slice_count = 0;
327 ctx_pic->bitstream_size = 0;
328 ctx_pic->bitstream = NULL;
329 return 0;
330}
331
332static int dxva2_vc1_decode_slice(AVCodecContext *avctx,
333 const uint8_t *buffer,
334 uint32_t size)
335{
336 const VC1Context *v = avctx->priv_data;
337 const Picture *current_picture = v->s.current_picture_ptr;
338 struct dxva2_picture_context *ctx_pic = current_picture->hwaccel_picture_private;
339 unsigned position;
340
341 if (ctx_pic->slice_count >= MAX_SLICES) {
342 avpriv_request_sample(avctx, "%d slices in dxva2",
343 ctx_pic->slice_count);
344 return -1;
345 }
346
347 if (avctx->codec_id == AV_CODEC_ID_VC1 &&
348 size >= 4 && IS_MARKER(AV_RB32(buffer))) {
349 buffer += 4;
350 size -= 4;
351 }
352
353 if (!ctx_pic->bitstream)
354 ctx_pic->bitstream = buffer;
355 ctx_pic->bitstream_size += size;
356
357 position = buffer - ctx_pic->bitstream;
358 fill_slice(avctx, &ctx_pic->slice[ctx_pic->slice_count++], position, size);
359 return 0;
360}
361
362static int dxva2_vc1_end_frame(AVCodecContext *avctx)
363{
364 VC1Context *v = avctx->priv_data;
365 struct dxva2_picture_context *ctx_pic = v->s.current_picture_ptr->hwaccel_picture_private;
366 int ret;
367
368 if (ctx_pic->slice_count <= 0 || ctx_pic->bitstream_size <= 0)
369 return -1;
370
371 ret = ff_dxva2_common_end_frame(avctx, v->s.current_picture_ptr->f,
372 &ctx_pic->pp, sizeof(ctx_pic->pp),
373 NULL, 0,
374 commit_bitstream_and_slice_buffer);
375 if (!ret)
376 ff_mpeg_draw_horiz_band(&v->s, 0, avctx->height);
377 return ret;
378}
379
380#if CONFIG_WMV3_DXVA2_HWACCEL
381AVHWAccel ff_wmv3_dxva2_hwaccel = {
382 .name = "wmv3_dxva2",
383 .type = AVMEDIA_TYPE_VIDEO,
384 .id = AV_CODEC_ID_WMV3,
385 .pix_fmt = AV_PIX_FMT_DXVA2_VLD,
386 .start_frame = dxva2_vc1_start_frame,
387 .decode_slice = dxva2_vc1_decode_slice,
388 .end_frame = dxva2_vc1_end_frame,
389 .frame_priv_data_size = sizeof(struct dxva2_picture_context),
390};
391#endif
392
393#if CONFIG_VC1_DXVA2_HWACCEL
394AVHWAccel ff_vc1_dxva2_hwaccel = {
395 .name = "vc1_dxva2",
396 .type = AVMEDIA_TYPE_VIDEO,
397 .id = AV_CODEC_ID_VC1,
398 .pix_fmt = AV_PIX_FMT_DXVA2_VLD,
399 .start_frame = dxva2_vc1_start_frame,
400 .decode_slice = dxva2_vc1_decode_slice,
401 .end_frame = dxva2_vc1_end_frame,
402 .frame_priv_data_size = sizeof(struct dxva2_picture_context),
403};
404#endif
405
406#if CONFIG_WMV3_D3D11VA_HWACCEL
407AVHWAccel ff_wmv3_d3d11va_hwaccel = {
408 .name = "wmv3_d3d11va",
409 .type = AVMEDIA_TYPE_VIDEO,
410 .id = AV_CODEC_ID_WMV3,
411 .pix_fmt = AV_PIX_FMT_D3D11VA_VLD,
412 .start_frame = dxva2_vc1_start_frame,
413 .decode_slice = dxva2_vc1_decode_slice,
414 .end_frame = dxva2_vc1_end_frame,
415 .frame_priv_data_size = sizeof(struct dxva2_picture_context),
416};
417#endif
418
419#if CONFIG_VC1_D3D11VA_HWACCEL
420AVHWAccel ff_vc1_d3d11va_hwaccel = {
421 .name = "vc1_d3d11va",
422 .type = AVMEDIA_TYPE_VIDEO,
423 .id = AV_CODEC_ID_VC1,
424 .pix_fmt = AV_PIX_FMT_D3D11VA_VLD,
425 .start_frame = dxva2_vc1_start_frame,
426 .decode_slice = dxva2_vc1_decode_slice,
427 .end_frame = dxva2_vc1_end_frame,
428 .frame_priv_data_size = sizeof(struct dxva2_picture_context),
429};
430#endif
431
generated by cgit at 2024-05-17 05:47:25 (GMT)