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path: root/libavcodec/vaapi_encode_h264.c (plain)
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1/*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19#include <va/va.h>
20#include <va/va_enc_h264.h>
21
22#include "libavutil/avassert.h"
23#include "libavutil/internal.h"
24#include "libavutil/opt.h"
25#include "libavutil/pixfmt.h"
26
27#include "avcodec.h"
28#include "h264.h"
29#include "h264_sei.h"
30#include "internal.h"
31#include "vaapi_encode.h"
32#include "vaapi_encode_h26x.h"
33
34enum {
35 SLICE_TYPE_P = 0,
36 SLICE_TYPE_B = 1,
37 SLICE_TYPE_I = 2,
38 SLICE_TYPE_SP = 3,
39 SLICE_TYPE_SI = 4,
40};
41
42// This structure contains all possibly-useful per-sequence syntax elements
43// which are not already contained in the various VAAPI structures.
44typedef struct VAAPIEncodeH264MiscSequenceParams {
45 unsigned int profile_idc;
46 char constraint_set0_flag;
47 char constraint_set1_flag;
48 char constraint_set2_flag;
49 char constraint_set3_flag;
50 char constraint_set4_flag;
51 char constraint_set5_flag;
52
53 char separate_colour_plane_flag;
54 char qpprime_y_zero_transform_bypass_flag;
55
56 char gaps_in_frame_num_allowed_flag;
57 char delta_pic_order_always_zero_flag;
58 char bottom_field_pic_order_in_frame_present_flag;
59
60 unsigned int num_slice_groups_minus1;
61 unsigned int slice_group_map_type;
62
63 int pic_init_qs_minus26;
64
65 char overscan_info_present_flag;
66 char overscan_appropriate_flag;
67
68 char video_signal_type_present_flag;
69 unsigned int video_format;
70 char video_full_range_flag;
71 char colour_description_present_flag;
72 unsigned int colour_primaries;
73 unsigned int transfer_characteristics;
74 unsigned int matrix_coefficients;
75
76 char chroma_loc_info_present_flag;
77 unsigned int chroma_sample_loc_type_top_field;
78 unsigned int chroma_sample_loc_type_bottom_field;
79
80 // Some timing elements are in VAEncSequenceParameterBufferH264.
81 char fixed_frame_rate_flag;
82
83 char nal_hrd_parameters_present_flag;
84 char vcl_hrd_parameters_present_flag;
85 char low_delay_hrd_flag;
86 char pic_struct_present_flag;
87
88 char motion_vectors_over_pic_boundaries_flag;
89 unsigned int max_bytes_per_pic_denom;
90 unsigned int max_bits_per_mb_denom;
91 unsigned int max_num_reorder_frames;
92 unsigned int max_dec_pic_buffering;
93
94 unsigned int cpb_cnt_minus1;
95 unsigned int bit_rate_scale;
96 unsigned int cpb_size_scale;
97 unsigned int bit_rate_value_minus1[32];
98 unsigned int cpb_size_value_minus1[32];
99 char cbr_flag[32];
100 unsigned int initial_cpb_removal_delay_length_minus1;
101 unsigned int cpb_removal_delay_length_minus1;
102 unsigned int dpb_output_delay_length_minus1;
103 unsigned int time_offset_length;
104
105 unsigned int initial_cpb_removal_delay;
106 unsigned int initial_cpb_removal_delay_offset;
107
108 unsigned int pic_struct;
109} VAAPIEncodeH264MiscSequenceParams;
110
111// This structure contains all possibly-useful per-slice syntax elements
112// which are not already contained in the various VAAPI structures.
113typedef struct VAAPIEncodeH264MiscSliceParams {
114 unsigned int nal_unit_type;
115 unsigned int nal_ref_idc;
116
117 unsigned int colour_plane_id;
118 char field_pic_flag;
119 char bottom_field_flag;
120
121 unsigned int redundant_pic_cnt;
122
123 char sp_for_switch_flag;
124 int slice_qs_delta;
125
126 char ref_pic_list_modification_flag_l0;
127 char ref_pic_list_modification_flag_l1;
128
129 char no_output_of_prior_pics_flag;
130 char long_term_reference_flag;
131 char adaptive_ref_pic_marking_mode_flag;
132} VAAPIEncodeH264MiscSliceParams;
133
134typedef struct VAAPIEncodeH264Slice {
135 VAAPIEncodeH264MiscSliceParams misc_slice_params;
136} VAAPIEncodeH264Slice;
137
138typedef struct VAAPIEncodeH264Context {
139 VAAPIEncodeH264MiscSequenceParams misc_sequence_params;
140
141 int mb_width;
142 int mb_height;
143
144 int fixed_qp_idr;
145 int fixed_qp_p;
146 int fixed_qp_b;
147
148 int next_frame_num;
149 int64_t last_idr_frame;
150 int64_t idr_pic_count;
151
152 int cpb_delay;
153 int dpb_delay;
154
155 // Rate control configuration.
156 int send_timing_sei;
157
158#if VA_CHECK_VERSION(0, 36, 0)
159 // Speed-quality tradeoff setting.
160 struct {
161 VAEncMiscParameterBuffer misc;
162 VAEncMiscParameterBufferQualityLevel quality;
163 } quality_params;
164#endif
165} VAAPIEncodeH264Context;
166
167typedef struct VAAPIEncodeH264Options {
168 int qp;
169 int quality;
170 int low_power;
171} VAAPIEncodeH264Options;
172
173
174#define vseq_var(name) vseq->name, name
175#define vseq_field(name) vseq->seq_fields.bits.name, name
176#define vvui_field(name) vseq->vui_fields.bits.name, name
177#define vpic_var(name) vpic->name, name
178#define vpic_field(name) vpic->pic_fields.bits.name, name
179#define vslice_var(name) vslice->name, name
180#define vslice_field(name) vslice->slice_fields.bits.name, name
181#define mseq_var(name) mseq->name, name
182#define mslice_var(name) mslice->name, name
183
184static void vaapi_encode_h264_write_nal_header(PutBitContext *pbc,
185 int nal_unit_type, int nal_ref_idc)
186{
187 u(1, 0, forbidden_zero_bit);
188 u(2, nal_ref_idc, nal_ref_idc);
189 u(5, nal_unit_type, nal_unit_type);
190}
191
192static void vaapi_encode_h264_write_trailing_rbsp(PutBitContext *pbc)
193{
194 u(1, 1, rbsp_stop_one_bit);
195 while (put_bits_count(pbc) & 7)
196 u(1, 0, rbsp_alignment_zero_bit);
197}
198
199static void vaapi_encode_h264_write_vui(PutBitContext *pbc,
200 VAAPIEncodeContext *ctx)
201{
202 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
203 VAAPIEncodeH264Context *priv = ctx->priv_data;
204 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
205 int i;
206
207 u(1, vvui_field(aspect_ratio_info_present_flag));
208 if (vseq->vui_fields.bits.aspect_ratio_info_present_flag) {
209 u(8, vseq_var(aspect_ratio_idc));
210 if (vseq->aspect_ratio_idc == 255) {
211 u(16, vseq_var(sar_width));
212 u(16, vseq_var(sar_height));
213 }
214 }
215
216 u(1, mseq_var(overscan_info_present_flag));
217 if (mseq->overscan_info_present_flag)
218 u(1, mseq_var(overscan_appropriate_flag));
219
220 u(1, mseq_var(video_signal_type_present_flag));
221 if (mseq->video_signal_type_present_flag) {
222 u(3, mseq_var(video_format));
223 u(1, mseq_var(video_full_range_flag));
224 u(1, mseq_var(colour_description_present_flag));
225 if (mseq->colour_description_present_flag) {
226 u(8, mseq_var(colour_primaries));
227 u(8, mseq_var(transfer_characteristics));
228 u(8, mseq_var(matrix_coefficients));
229 }
230 }
231
232 u(1, mseq_var(chroma_loc_info_present_flag));
233 if (mseq->chroma_loc_info_present_flag) {
234 ue(mseq_var(chroma_sample_loc_type_top_field));
235 ue(mseq_var(chroma_sample_loc_type_bottom_field));
236 }
237
238 u(1, vvui_field(timing_info_present_flag));
239 if (vseq->vui_fields.bits.timing_info_present_flag) {
240 u(32, vseq_var(num_units_in_tick));
241 u(32, vseq_var(time_scale));
242 u(1, mseq_var(fixed_frame_rate_flag));
243 }
244
245 u(1, mseq_var(nal_hrd_parameters_present_flag));
246 if (mseq->nal_hrd_parameters_present_flag) {
247 ue(mseq_var(cpb_cnt_minus1));
248 u(4, mseq_var(bit_rate_scale));
249 u(4, mseq_var(cpb_size_scale));
250 for (i = 0; i <= mseq->cpb_cnt_minus1; i++) {
251 ue(mseq_var(bit_rate_value_minus1[i]));
252 ue(mseq_var(cpb_size_value_minus1[i]));
253 u(1, mseq_var(cbr_flag[i]));
254 }
255 u(5, mseq_var(initial_cpb_removal_delay_length_minus1));
256 u(5, mseq_var(cpb_removal_delay_length_minus1));
257 u(5, mseq_var(dpb_output_delay_length_minus1));
258 u(5, mseq_var(time_offset_length));
259 }
260 u(1, mseq_var(vcl_hrd_parameters_present_flag));
261 if (mseq->vcl_hrd_parameters_present_flag) {
262 av_assert0(0 && "vcl hrd parameters not supported");
263 }
264
265 if (mseq->nal_hrd_parameters_present_flag ||
266 mseq->vcl_hrd_parameters_present_flag)
267 u(1, mseq_var(low_delay_hrd_flag));
268 u(1, mseq_var(pic_struct_present_flag));
269
270 u(1, vvui_field(bitstream_restriction_flag));
271 if (vseq->vui_fields.bits.bitstream_restriction_flag) {
272 u(1, mseq_var(motion_vectors_over_pic_boundaries_flag));
273 ue(mseq_var(max_bytes_per_pic_denom));
274 ue(mseq_var(max_bits_per_mb_denom));
275 ue(vvui_field(log2_max_mv_length_horizontal));
276 ue(vvui_field(log2_max_mv_length_vertical));
277 ue(mseq_var(max_num_reorder_frames));
278 ue(mseq_var(max_dec_pic_buffering));
279 }
280}
281
282static void vaapi_encode_h264_write_sps(PutBitContext *pbc,
283 VAAPIEncodeContext *ctx)
284{
285 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
286 VAAPIEncodeH264Context *priv = ctx->priv_data;
287 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
288 int i;
289
290 vaapi_encode_h264_write_nal_header(pbc, H264_NAL_SPS, 3);
291
292 u(8, mseq_var(profile_idc));
293 u(1, mseq_var(constraint_set0_flag));
294 u(1, mseq_var(constraint_set1_flag));
295 u(1, mseq_var(constraint_set2_flag));
296 u(1, mseq_var(constraint_set3_flag));
297 u(1, mseq_var(constraint_set4_flag));
298 u(1, mseq_var(constraint_set5_flag));
299 u(2, 0, reserved_zero_2bits);
300
301 u(8, vseq_var(level_idc));
302
303 ue(vseq_var(seq_parameter_set_id));
304
305 if (mseq->profile_idc == 100 || mseq->profile_idc == 110 ||
306 mseq->profile_idc == 122 || mseq->profile_idc == 244 ||
307 mseq->profile_idc == 44 || mseq->profile_idc == 83 ||
308 mseq->profile_idc == 86 || mseq->profile_idc == 118 ||
309 mseq->profile_idc == 128 || mseq->profile_idc == 138) {
310 ue(vseq_field(chroma_format_idc));
311
312 if (vseq->seq_fields.bits.chroma_format_idc == 3)
313 u(1, mseq_var(separate_colour_plane_flag));
314
315 ue(vseq_var(bit_depth_luma_minus8));
316 ue(vseq_var(bit_depth_chroma_minus8));
317
318 u(1, mseq_var(qpprime_y_zero_transform_bypass_flag));
319
320 u(1, vseq_field(seq_scaling_matrix_present_flag));
321 if (vseq->seq_fields.bits.seq_scaling_matrix_present_flag) {
322 av_assert0(0 && "scaling matrices not supported");
323 }
324 }
325
326 ue(vseq_field(log2_max_frame_num_minus4));
327 ue(vseq_field(pic_order_cnt_type));
328
329 if (vseq->seq_fields.bits.pic_order_cnt_type == 0) {
330 ue(vseq_field(log2_max_pic_order_cnt_lsb_minus4));
331 } else if (vseq->seq_fields.bits.pic_order_cnt_type == 1) {
332 u(1, mseq_var(delta_pic_order_always_zero_flag));
333 se(vseq_var(offset_for_non_ref_pic));
334 se(vseq_var(offset_for_top_to_bottom_field));
335 ue(vseq_var(num_ref_frames_in_pic_order_cnt_cycle));
336
337 for (i = 0; i < vseq->num_ref_frames_in_pic_order_cnt_cycle; i++)
338 se(vseq_var(offset_for_ref_frame[i]));
339 }
340
341 ue(vseq_var(max_num_ref_frames));
342 u(1, mseq_var(gaps_in_frame_num_allowed_flag));
343
344 ue(vseq->picture_width_in_mbs - 1, pic_width_in_mbs_minus1);
345 ue(vseq->picture_height_in_mbs - 1, pic_height_in_mbs_minus1);
346
347 u(1, vseq_field(frame_mbs_only_flag));
348 if (!vseq->seq_fields.bits.frame_mbs_only_flag)
349 u(1, vseq_field(mb_adaptive_frame_field_flag));
350
351 u(1, vseq_field(direct_8x8_inference_flag));
352
353 u(1, vseq_var(frame_cropping_flag));
354 if (vseq->frame_cropping_flag) {
355 ue(vseq_var(frame_crop_left_offset));
356 ue(vseq_var(frame_crop_right_offset));
357 ue(vseq_var(frame_crop_top_offset));
358 ue(vseq_var(frame_crop_bottom_offset));
359 }
360
361 u(1, vseq_var(vui_parameters_present_flag));
362 if (vseq->vui_parameters_present_flag)
363 vaapi_encode_h264_write_vui(pbc, ctx);
364
365 vaapi_encode_h264_write_trailing_rbsp(pbc);
366}
367
368static void vaapi_encode_h264_write_pps(PutBitContext *pbc,
369 VAAPIEncodeContext *ctx)
370{
371 VAEncPictureParameterBufferH264 *vpic = ctx->codec_picture_params;
372 VAAPIEncodeH264Context *priv = ctx->priv_data;
373 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
374
375 vaapi_encode_h264_write_nal_header(pbc, H264_NAL_PPS, 3);
376
377 ue(vpic_var(pic_parameter_set_id));
378 ue(vpic_var(seq_parameter_set_id));
379
380 u(1, vpic_field(entropy_coding_mode_flag));
381 u(1, mseq_var(bottom_field_pic_order_in_frame_present_flag));
382
383 ue(mseq_var(num_slice_groups_minus1));
384 if (mseq->num_slice_groups_minus1 > 0) {
385 ue(mseq_var(slice_group_map_type));
386 av_assert0(0 && "slice groups not supported");
387 }
388
389 ue(vpic_var(num_ref_idx_l0_active_minus1));
390 ue(vpic_var(num_ref_idx_l1_active_minus1));
391
392 u(1, vpic_field(weighted_pred_flag));
393 u(2, vpic_field(weighted_bipred_idc));
394
395 se(vpic->pic_init_qp - 26, pic_init_qp_minus26);
396 se(mseq_var(pic_init_qs_minus26));
397 se(vpic_var(chroma_qp_index_offset));
398
399 u(1, vpic_field(deblocking_filter_control_present_flag));
400 u(1, vpic_field(constrained_intra_pred_flag));
401 u(1, vpic_field(redundant_pic_cnt_present_flag));
402 u(1, vpic_field(transform_8x8_mode_flag));
403
404 u(1, vpic_field(pic_scaling_matrix_present_flag));
405 if (vpic->pic_fields.bits.pic_scaling_matrix_present_flag) {
406 av_assert0(0 && "scaling matrices not supported");
407 }
408
409 se(vpic_var(second_chroma_qp_index_offset));
410
411 vaapi_encode_h264_write_trailing_rbsp(pbc);
412}
413
414static void vaapi_encode_h264_write_slice_header2(PutBitContext *pbc,
415 VAAPIEncodeContext *ctx,
416 VAAPIEncodePicture *pic,
417 VAAPIEncodeSlice *slice)
418{
419 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
420 VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
421 VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
422 VAAPIEncodeH264Context *priv = ctx->priv_data;
423 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
424 VAAPIEncodeH264Slice *pslice = slice->priv_data;
425 VAAPIEncodeH264MiscSliceParams *mslice = &pslice->misc_slice_params;
426
427 vaapi_encode_h264_write_nal_header(pbc, mslice->nal_unit_type,
428 mslice->nal_ref_idc);
429
430 ue(vslice->macroblock_address, first_mb_in_slice);
431 ue(vslice_var(slice_type));
432 ue(vpic_var(pic_parameter_set_id));
433
434 if (mseq->separate_colour_plane_flag) {
435 u(2, mslice_var(colour_plane_id));
436 }
437
438 u(4 + vseq->seq_fields.bits.log2_max_frame_num_minus4,
439 (vpic->frame_num &
440 ((1 << (4 + vseq->seq_fields.bits.log2_max_frame_num_minus4)) - 1)),
441 frame_num);
442
443 if (!vseq->seq_fields.bits.frame_mbs_only_flag) {
444 u(1, mslice_var(field_pic_flag));
445 if (mslice->field_pic_flag)
446 u(1, mslice_var(bottom_field_flag));
447 }
448
449 if (vpic->pic_fields.bits.idr_pic_flag) {
450 ue(vslice_var(idr_pic_id));
451 }
452
453 if (vseq->seq_fields.bits.pic_order_cnt_type == 0) {
454 u(4 + vseq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4,
455 vslice_var(pic_order_cnt_lsb));
456 if (mseq->bottom_field_pic_order_in_frame_present_flag &&
457 !mslice->field_pic_flag) {
458 se(vslice_var(delta_pic_order_cnt_bottom));
459 }
460 }
461
462 if (vseq->seq_fields.bits.pic_order_cnt_type == 1 &&
463 !vseq->seq_fields.bits.delta_pic_order_always_zero_flag) {
464 se(vslice_var(delta_pic_order_cnt[0]));
465 if (mseq->bottom_field_pic_order_in_frame_present_flag &&
466 !mslice->field_pic_flag) {
467 se(vslice_var(delta_pic_order_cnt[1]));
468 }
469 }
470
471 if (vpic->pic_fields.bits.redundant_pic_cnt_present_flag) {
472 ue(mslice_var(redundant_pic_cnt));
473 }
474
475 if (vslice->slice_type == SLICE_TYPE_B) {
476 u(1, vslice_var(direct_spatial_mv_pred_flag));
477 }
478
479 if (vslice->slice_type == SLICE_TYPE_P ||
480 vslice->slice_type == SLICE_TYPE_SP ||
481 vslice->slice_type == SLICE_TYPE_B) {
482 u(1, vslice_var(num_ref_idx_active_override_flag));
483 if (vslice->num_ref_idx_active_override_flag) {
484 ue(vslice_var(num_ref_idx_l0_active_minus1));
485 if (vslice->slice_type == SLICE_TYPE_B)
486 ue(vslice_var(num_ref_idx_l1_active_minus1));
487 }
488 }
489
490 if (mslice->nal_unit_type == 20 || mslice->nal_unit_type == 21) {
491 av_assert0(0 && "no MVC support");
492 } else {
493 if (vslice->slice_type % 5 != 2 && vslice->slice_type % 5 != 4) {
494 u(1, mslice_var(ref_pic_list_modification_flag_l0));
495 if (mslice->ref_pic_list_modification_flag_l0) {
496 av_assert0(0 && "ref pic list modification");
497 }
498 }
499 if (vslice->slice_type % 5 == 1) {
500 u(1, mslice_var(ref_pic_list_modification_flag_l1));
501 if (mslice->ref_pic_list_modification_flag_l1) {
502 av_assert0(0 && "ref pic list modification");
503 }
504 }
505 }
506
507 if ((vpic->pic_fields.bits.weighted_pred_flag &&
508 (vslice->slice_type == SLICE_TYPE_P ||
509 vslice->slice_type == SLICE_TYPE_SP)) ||
510 (vpic->pic_fields.bits.weighted_bipred_idc == 1 &&
511 vslice->slice_type == SLICE_TYPE_B)) {
512 av_assert0(0 && "prediction weights not supported");
513 }
514
515 av_assert0(mslice->nal_ref_idc > 0 ==
516 vpic->pic_fields.bits.reference_pic_flag);
517 if (mslice->nal_ref_idc != 0) {
518 if (vpic->pic_fields.bits.idr_pic_flag) {
519 u(1, mslice_var(no_output_of_prior_pics_flag));
520 u(1, mslice_var(long_term_reference_flag));
521 } else {
522 u(1, mslice_var(adaptive_ref_pic_marking_mode_flag));
523 if (mslice->adaptive_ref_pic_marking_mode_flag) {
524 av_assert0(0 && "MMCOs not supported");
525 }
526 }
527 }
528
529 if (vpic->pic_fields.bits.entropy_coding_mode_flag &&
530 vslice->slice_type != SLICE_TYPE_I &&
531 vslice->slice_type != SLICE_TYPE_SI) {
532 ue(vslice_var(cabac_init_idc));
533 }
534
535 se(vslice_var(slice_qp_delta));
536 if (vslice->slice_type == SLICE_TYPE_SP ||
537 vslice->slice_type == SLICE_TYPE_SI) {
538 if (vslice->slice_type == SLICE_TYPE_SP)
539 u(1, mslice_var(sp_for_switch_flag));
540 se(mslice_var(slice_qs_delta));
541 }
542
543 if (vpic->pic_fields.bits.deblocking_filter_control_present_flag) {
544 ue(vslice_var(disable_deblocking_filter_idc));
545 if (vslice->disable_deblocking_filter_idc != 1) {
546 se(vslice_var(slice_alpha_c0_offset_div2));
547 se(vslice_var(slice_beta_offset_div2));
548 }
549 }
550
551 if (mseq->num_slice_groups_minus1 > 0 &&
552 mseq->slice_group_map_type >= 3 && mseq->slice_group_map_type <= 5) {
553 av_assert0(0 && "slice groups not supported");
554 }
555
556 // No alignment - this need not be a byte boundary.
557}
558
559static void vaapi_encode_h264_write_buffering_period(PutBitContext *pbc,
560 VAAPIEncodeContext *ctx,
561 VAAPIEncodePicture *pic)
562{
563 VAAPIEncodeH264Context *priv = ctx->priv_data;
564 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
565 VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
566 int i;
567
568 ue(vpic_var(seq_parameter_set_id));
569
570 if (mseq->nal_hrd_parameters_present_flag) {
571 for (i = 0; i <= mseq->cpb_cnt_minus1; i++) {
572 u(mseq->initial_cpb_removal_delay_length_minus1 + 1,
573 mseq_var(initial_cpb_removal_delay));
574 u(mseq->initial_cpb_removal_delay_length_minus1 + 1,
575 mseq_var(initial_cpb_removal_delay_offset));
576 }
577 }
578 if (mseq->vcl_hrd_parameters_present_flag) {
579 av_assert0(0 && "vcl hrd parameters not supported");
580 }
581}
582
583static void vaapi_encode_h264_write_pic_timing(PutBitContext *pbc,
584 VAAPIEncodeContext *ctx,
585 VAAPIEncodePicture *pic)
586{
587 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
588 VAAPIEncodeH264Context *priv = ctx->priv_data;
589 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
590 int i, num_clock_ts;
591
592 if (mseq->nal_hrd_parameters_present_flag ||
593 mseq->vcl_hrd_parameters_present_flag) {
594 u(mseq->cpb_removal_delay_length_minus1 + 1,
595 2 * vseq->num_units_in_tick * priv->cpb_delay,
596 cpb_removal_delay);
597 u(mseq->dpb_output_delay_length_minus1 + 1,
598 2 * vseq->num_units_in_tick * priv->dpb_delay,
599 dpb_output_delay);
600 }
601 if (mseq->pic_struct_present_flag) {
602 u(4, mseq_var(pic_struct));
603 num_clock_ts = (mseq->pic_struct <= 2 ? 1 :
604 mseq->pic_struct <= 4 ? 2 :
605 mseq->pic_struct <= 8 ? 3 : 0);
606 for (i = 0; i < num_clock_ts; i++) {
607 u(1, 0, clock_timestamp_flag[i]);
608 // No full timestamp information.
609 }
610 }
611}
612
613static void vaapi_encode_h264_write_identifier(PutBitContext *pbc,
614 VAAPIEncodeContext *ctx,
615 VAAPIEncodePicture *pic)
616{
617 const char *lavc = LIBAVCODEC_IDENT;
618 const char *vaapi = VA_VERSION_S;
619 const char *driver = vaQueryVendorString(ctx->hwctx->display);
620 char tmp[256];
621 int i;
622
623 // Random (version 4) ISO 11578 UUID.
624 uint8_t uuid[16] = {
625 0x59, 0x94, 0x8b, 0x28, 0x11, 0xec, 0x45, 0xaf,
626 0x96, 0x75, 0x19, 0xd4, 0x1f, 0xea, 0xa9, 0x4d,
627 };
628
629 for (i = 0; i < 16; i++)
630 u(8, uuid[i], uuid_iso_iec_11578);
631
632 snprintf(tmp, sizeof(tmp), "%s / VAAPI %s / %s", lavc, vaapi, driver);
633 for (i = 0; i < sizeof(tmp) && tmp[i]; i++)
634 u(8, tmp[i], user_data_payload_byte);
635}
636
637static void vaapi_encode_h264_write_sei(PutBitContext *pbc,
638 VAAPIEncodeContext *ctx,
639 VAAPIEncodePicture *pic)
640{
641 VAAPIEncodeH264Context *priv = ctx->priv_data;
642 PutBitContext payload_bits;
643 char payload[256];
644 int payload_type, payload_size, i;
645 void (*write_payload)(PutBitContext *pbc,
646 VAAPIEncodeContext *ctx,
647 VAAPIEncodePicture *pic) = NULL;
648
649 vaapi_encode_h264_write_nal_header(pbc, H264_NAL_SEI, 0);
650
651 for (payload_type = 0; payload_type < 64; payload_type++) {
652 switch (payload_type) {
653 case SEI_TYPE_BUFFERING_PERIOD:
654 if (!priv->send_timing_sei ||
655 pic->type != PICTURE_TYPE_IDR)
656 continue;
657 write_payload = &vaapi_encode_h264_write_buffering_period;
658 break;
659 case SEI_TYPE_PIC_TIMING:
660 if (!priv->send_timing_sei)
661 continue;
662 write_payload = &vaapi_encode_h264_write_pic_timing;
663 break;
664 case SEI_TYPE_USER_DATA_UNREGISTERED:
665 if (pic->encode_order != 0)
666 continue;
667 write_payload = &vaapi_encode_h264_write_identifier;
668 break;
669 default:
670 continue;
671 }
672
673 init_put_bits(&payload_bits, payload, sizeof(payload));
674 write_payload(&payload_bits, ctx, pic);
675 if (put_bits_count(&payload_bits) & 7) {
676 write_u(&payload_bits, 1, 1, bit_equal_to_one);
677 while (put_bits_count(&payload_bits) & 7)
678 write_u(&payload_bits, 1, 0, bit_equal_to_zero);
679 }
680 payload_size = put_bits_count(&payload_bits) / 8;
681 flush_put_bits(&payload_bits);
682
683 u(8, payload_type, last_payload_type_byte);
684 u(8, payload_size, last_payload_size_byte);
685 for (i = 0; i < payload_size; i++)
686 u(8, payload[i] & 0xff, sei_payload);
687 }
688
689 vaapi_encode_h264_write_trailing_rbsp(pbc);
690}
691
692static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,
693 char *data, size_t *data_len)
694{
695 VAAPIEncodeContext *ctx = avctx->priv_data;
696 PutBitContext pbc;
697 char tmp[256];
698 int err;
699 size_t nal_len, bit_len, bit_pos, next_len;
700
701 bit_len = *data_len;
702 bit_pos = 0;
703
704 init_put_bits(&pbc, tmp, sizeof(tmp));
705 vaapi_encode_h264_write_sps(&pbc, ctx);
706 nal_len = put_bits_count(&pbc);
707 flush_put_bits(&pbc);
708
709 next_len = bit_len - bit_pos;
710 err = ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data + bit_pos / 8,
711 &next_len,
712 tmp, nal_len);
713 if (err < 0)
714 return err;
715 bit_pos += next_len;
716
717 init_put_bits(&pbc, tmp, sizeof(tmp));
718 vaapi_encode_h264_write_pps(&pbc, ctx);
719 nal_len = put_bits_count(&pbc);
720 flush_put_bits(&pbc);
721
722 next_len = bit_len - bit_pos;
723 err = ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data + bit_pos / 8,
724 &next_len,
725 tmp, nal_len);
726 if (err < 0)
727 return err;
728 bit_pos += next_len;
729
730 *data_len = bit_pos;
731 return 0;
732}
733
734static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,
735 VAAPIEncodePicture *pic,
736 VAAPIEncodeSlice *slice,
737 char *data, size_t *data_len)
738{
739 VAAPIEncodeContext *ctx = avctx->priv_data;
740 PutBitContext pbc;
741 char tmp[256];
742 size_t header_len;
743
744 init_put_bits(&pbc, tmp, sizeof(tmp));
745 vaapi_encode_h264_write_slice_header2(&pbc, ctx, pic, slice);
746 header_len = put_bits_count(&pbc);
747 flush_put_bits(&pbc);
748
749 return ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data, data_len,
750 tmp, header_len);
751}
752
753static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,
754 VAAPIEncodePicture *pic,
755 int index, int *type,
756 char *data, size_t *data_len)
757{
758 VAAPIEncodeContext *ctx = avctx->priv_data;
759 PutBitContext pbc;
760 char tmp[256];
761 size_t header_len;
762
763 if (index == 0 && ctx->va_rc_mode == VA_RC_CBR) {
764 *type = VAEncPackedHeaderH264_SEI;
765
766 init_put_bits(&pbc, tmp, sizeof(tmp));
767 vaapi_encode_h264_write_sei(&pbc, ctx, pic);
768 header_len = put_bits_count(&pbc);
769 flush_put_bits(&pbc);
770
771 return ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data, data_len,
772 tmp, header_len);
773
774 } else {
775 return AVERROR_EOF;
776 }
777}
778
779static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
780{
781 VAAPIEncodeContext *ctx = avctx->priv_data;
782 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
783 VAEncPictureParameterBufferH264 *vpic = ctx->codec_picture_params;
784 VAAPIEncodeH264Context *priv = ctx->priv_data;
785 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
786 int i;
787
788 {
789 vseq->seq_parameter_set_id = 0;
790
791 vseq->level_idc = avctx->level;
792
793 vseq->max_num_ref_frames = 1 + (avctx->max_b_frames > 0);
794
795 vseq->picture_width_in_mbs = priv->mb_width;
796 vseq->picture_height_in_mbs = priv->mb_height;
797
798 vseq->seq_fields.bits.chroma_format_idc = 1;
799 vseq->seq_fields.bits.frame_mbs_only_flag = 1;
800 vseq->seq_fields.bits.direct_8x8_inference_flag = 1;
801 vseq->seq_fields.bits.log2_max_frame_num_minus4 = 4;
802 vseq->seq_fields.bits.pic_order_cnt_type = 0;
803 vseq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 =
804 av_clip(av_log2(avctx->max_b_frames + 1) - 2, 0, 12);
805
806 if (avctx->width != ctx->surface_width ||
807 avctx->height != ctx->surface_height) {
808 vseq->frame_cropping_flag = 1;
809
810 vseq->frame_crop_left_offset = 0;
811 vseq->frame_crop_right_offset =
812 (ctx->surface_width - avctx->width) / 2;
813 vseq->frame_crop_top_offset = 0;
814 vseq->frame_crop_bottom_offset =
815 (ctx->surface_height - avctx->height) / 2;
816 } else {
817 vseq->frame_cropping_flag = 0;
818 }
819
820 vseq->vui_parameters_present_flag = 1;
821 if (avctx->sample_aspect_ratio.num != 0) {
822 vseq->vui_fields.bits.aspect_ratio_info_present_flag = 1;
823 // There is a large enum of these which we could support
824 // individually rather than using the generic X/Y form?
825 if (avctx->sample_aspect_ratio.num ==
826 avctx->sample_aspect_ratio.den) {
827 vseq->aspect_ratio_idc = 1;
828 } else {
829 vseq->aspect_ratio_idc = 255; // Extended SAR.
830 vseq->sar_width = avctx->sample_aspect_ratio.num;
831 vseq->sar_height = avctx->sample_aspect_ratio.den;
832 }
833 }
834 if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
835 avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
836 avctx->colorspace != AVCOL_SPC_UNSPECIFIED) {
837 mseq->video_signal_type_present_flag = 1;
838 mseq->video_format = 5; // Unspecified.
839 mseq->video_full_range_flag = 0;
840 mseq->colour_description_present_flag = 1;
841 // These enums are derived from the standard and hence
842 // we can just use the values directly.
843 mseq->colour_primaries = avctx->color_primaries;
844 mseq->transfer_characteristics = avctx->color_trc;
845 mseq->matrix_coefficients = avctx->colorspace;
846 }
847
848 vseq->vui_fields.bits.bitstream_restriction_flag = 1;
849 mseq->motion_vectors_over_pic_boundaries_flag = 1;
850 mseq->max_bytes_per_pic_denom = 0;
851 mseq->max_bits_per_mb_denom = 0;
852 vseq->vui_fields.bits.log2_max_mv_length_horizontal = 16;
853 vseq->vui_fields.bits.log2_max_mv_length_vertical = 16;
854
855 mseq->max_num_reorder_frames = (avctx->max_b_frames > 0);
856 mseq->max_dec_pic_buffering = vseq->max_num_ref_frames;
857
858 vseq->bits_per_second = avctx->bit_rate;
859
860 vseq->vui_fields.bits.timing_info_present_flag = 1;
861 if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
862 vseq->num_units_in_tick = avctx->framerate.den;
863 vseq->time_scale = 2 * avctx->framerate.num;
864 mseq->fixed_frame_rate_flag = 1;
865 } else {
866 vseq->num_units_in_tick = avctx->time_base.num;
867 vseq->time_scale = 2 * avctx->time_base.den;
868 mseq->fixed_frame_rate_flag = 0;
869 }
870
871 if (ctx->va_rc_mode == VA_RC_CBR) {
872 priv->send_timing_sei = 1;
873 mseq->nal_hrd_parameters_present_flag = 1;
874
875 mseq->cpb_cnt_minus1 = 0;
876
877 // Try to scale these to a sensible range so that the
878 // golomb encode of the value is not overlong.
879 mseq->bit_rate_scale =
880 av_clip_uintp2(av_log2(avctx->bit_rate) - 15 - 6, 4);
881 mseq->bit_rate_value_minus1[0] =
882 (avctx->bit_rate >> mseq->bit_rate_scale + 6) - 1;
883
884 mseq->cpb_size_scale =
885 av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4);
886 mseq->cpb_size_value_minus1[0] =
887 (ctx->hrd_params.hrd.buffer_size >> mseq->cpb_size_scale + 4) - 1;
888
889 // CBR mode isn't actually available here, despite naming.
890 mseq->cbr_flag[0] = 0;
891
892 mseq->initial_cpb_removal_delay_length_minus1 = 23;
893 mseq->cpb_removal_delay_length_minus1 = 23;
894 mseq->dpb_output_delay_length_minus1 = 7;
895 mseq->time_offset_length = 0;
896
897 // This calculation can easily overflow 32 bits.
898 mseq->initial_cpb_removal_delay = 90000 *
899 (uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness /
900 ctx->hrd_params.hrd.buffer_size;
901
902 mseq->initial_cpb_removal_delay_offset = 0;
903 } else {
904 priv->send_timing_sei = 0;
905 mseq->nal_hrd_parameters_present_flag = 0;
906 }
907
908 vseq->intra_period = ctx->p_per_i * (ctx->b_per_p + 1);
909 vseq->intra_idr_period = vseq->intra_period;
910 vseq->ip_period = ctx->b_per_p + 1;
911 }
912
913 {
914 vpic->CurrPic.picture_id = VA_INVALID_ID;
915 vpic->CurrPic.flags = VA_PICTURE_H264_INVALID;
916
917 for (i = 0; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
918 vpic->ReferenceFrames[i].picture_id = VA_INVALID_ID;
919 vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
920 }
921
922 vpic->coded_buf = VA_INVALID_ID;
923
924 vpic->pic_parameter_set_id = 0;
925 vpic->seq_parameter_set_id = 0;
926
927 vpic->num_ref_idx_l0_active_minus1 = 0;
928 vpic->num_ref_idx_l1_active_minus1 = 0;
929
930 vpic->pic_fields.bits.entropy_coding_mode_flag =
931 ((avctx->profile & 0xff) != 66);
932 vpic->pic_fields.bits.weighted_pred_flag = 0;
933 vpic->pic_fields.bits.weighted_bipred_idc = 0;
934 vpic->pic_fields.bits.transform_8x8_mode_flag =
935 ((avctx->profile & 0xff) >= 100);
936
937 vpic->pic_init_qp = priv->fixed_qp_idr;
938 }
939
940 {
941 mseq->profile_idc = avctx->profile & 0xff;
942
943 if (avctx->profile & FF_PROFILE_H264_CONSTRAINED)
944 mseq->constraint_set1_flag = 1;
945 if (avctx->profile & FF_PROFILE_H264_INTRA)
946 mseq->constraint_set3_flag = 1;
947 }
948
949 return 0;
950}
951
952static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
953 VAAPIEncodePicture *pic)
954{
955 VAAPIEncodeContext *ctx = avctx->priv_data;
956 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
957 VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
958 VAAPIEncodeH264Context *priv = ctx->priv_data;
959 int i;
960
961 if (pic->type == PICTURE_TYPE_IDR) {
962 av_assert0(pic->display_order == pic->encode_order);
963 vpic->frame_num = 0;
964 priv->next_frame_num = 1;
965 priv->cpb_delay = 0;
966 priv->last_idr_frame = pic->display_order;
967 } else {
968 vpic->frame_num = priv->next_frame_num;
969 if (pic->type != PICTURE_TYPE_B) {
970 // nal_ref_idc != 0
971 ++priv->next_frame_num;
972 }
973 ++priv->cpb_delay;
974 }
975 priv->dpb_delay = pic->display_order - pic->encode_order + 1;
976
977 vpic->frame_num = vpic->frame_num &
978 ((1 << (4 + vseq->seq_fields.bits.log2_max_frame_num_minus4)) - 1);
979
980 vpic->CurrPic.picture_id = pic->recon_surface;
981 vpic->CurrPic.frame_idx = vpic->frame_num;
982 vpic->CurrPic.flags = 0;
983 vpic->CurrPic.TopFieldOrderCnt = pic->display_order - priv->last_idr_frame;
984 vpic->CurrPic.BottomFieldOrderCnt = pic->display_order - priv->last_idr_frame;
985
986 for (i = 0; i < pic->nb_refs; i++) {
987 VAAPIEncodePicture *ref = pic->refs[i];
988 av_assert0(ref && ref->encode_order < pic->encode_order);
989 vpic->ReferenceFrames[i].picture_id = ref->recon_surface;
990 vpic->ReferenceFrames[i].frame_idx = ref->encode_order;
991 vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
992 vpic->ReferenceFrames[i].TopFieldOrderCnt = ref->display_order - priv->last_idr_frame;
993 vpic->ReferenceFrames[i].BottomFieldOrderCnt = ref->display_order - priv->last_idr_frame;
994 }
995 for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
996 vpic->ReferenceFrames[i].picture_id = VA_INVALID_ID;
997 vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
998 }
999
1000 vpic->coded_buf = pic->output_buffer;
1001
1002 vpic->pic_fields.bits.idr_pic_flag = (pic->type == PICTURE_TYPE_IDR);
1003 vpic->pic_fields.bits.reference_pic_flag = (pic->type != PICTURE_TYPE_B);
1004
1005 pic->nb_slices = 1;
1006
1007 return 0;
1008}
1009
1010static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,
1011 VAAPIEncodePicture *pic,
1012 VAAPIEncodeSlice *slice)
1013{
1014 VAAPIEncodeContext *ctx = avctx->priv_data;
1015 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
1016 VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
1017 VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
1018 VAAPIEncodeH264Context *priv = ctx->priv_data;
1019 VAAPIEncodeH264Slice *pslice;
1020 VAAPIEncodeH264MiscSliceParams *mslice;
1021 int i;
1022
1023 slice->priv_data = av_mallocz(sizeof(*pslice));
1024 if (!slice->priv_data)
1025 return AVERROR(ENOMEM);
1026 pslice = slice->priv_data;
1027 mslice = &pslice->misc_slice_params;
1028
1029 if (pic->type == PICTURE_TYPE_IDR)
1030 mslice->nal_unit_type = H264_NAL_IDR_SLICE;
1031 else
1032 mslice->nal_unit_type = H264_NAL_SLICE;
1033
1034 switch (pic->type) {
1035 case PICTURE_TYPE_IDR:
1036 vslice->slice_type = SLICE_TYPE_I;
1037 mslice->nal_ref_idc = 3;
1038 break;
1039 case PICTURE_TYPE_I:
1040 vslice->slice_type = SLICE_TYPE_I;
1041 mslice->nal_ref_idc = 2;
1042 break;
1043 case PICTURE_TYPE_P:
1044 vslice->slice_type = SLICE_TYPE_P;
1045 mslice->nal_ref_idc = 1;
1046 break;
1047 case PICTURE_TYPE_B:
1048 vslice->slice_type = SLICE_TYPE_B;
1049 mslice->nal_ref_idc = 0;
1050 break;
1051 default:
1052 av_assert0(0 && "invalid picture type");
1053 }
1054
1055 // Only one slice per frame.
1056 vslice->macroblock_address = 0;
1057 vslice->num_macroblocks = priv->mb_width * priv->mb_height;
1058
1059 vslice->macroblock_info = VA_INVALID_ID;
1060
1061 vslice->pic_parameter_set_id = vpic->pic_parameter_set_id;
1062 vslice->idr_pic_id = priv->idr_pic_count++;
1063
1064 vslice->pic_order_cnt_lsb = (pic->display_order - priv->last_idr_frame) &
1065 ((1 << (4 + vseq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4)) - 1);
1066
1067 for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {
1068 vslice->RefPicList0[i].picture_id = VA_INVALID_ID;
1069 vslice->RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1070 vslice->RefPicList1[i].picture_id = VA_INVALID_ID;
1071 vslice->RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
1072 }
1073
1074 av_assert0(pic->nb_refs <= 2);
1075 if (pic->nb_refs >= 1) {
1076 // Backward reference for P- or B-frame.
1077 av_assert0(pic->type == PICTURE_TYPE_P ||
1078 pic->type == PICTURE_TYPE_B);
1079
1080 vslice->num_ref_idx_l0_active_minus1 = 0;
1081 vslice->RefPicList0[0] = vpic->ReferenceFrames[0];
1082 }
1083 if (pic->nb_refs >= 2) {
1084 // Forward reference for B-frame.
1085 av_assert0(pic->type == PICTURE_TYPE_B);
1086
1087 vslice->num_ref_idx_l1_active_minus1 = 0;
1088 vslice->RefPicList1[0] = vpic->ReferenceFrames[1];
1089 }
1090
1091 if (pic->type == PICTURE_TYPE_B)
1092 vslice->slice_qp_delta = priv->fixed_qp_b - vpic->pic_init_qp;
1093 else if (pic->type == PICTURE_TYPE_P)
1094 vslice->slice_qp_delta = priv->fixed_qp_p - vpic->pic_init_qp;
1095 else
1096 vslice->slice_qp_delta = priv->fixed_qp_idr - vpic->pic_init_qp;
1097
1098 vslice->direct_spatial_mv_pred_flag = 1;
1099
1100 return 0;
1101}
1102
1103static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)
1104{
1105 VAAPIEncodeContext *ctx = avctx->priv_data;
1106 VAAPIEncodeH264Context *priv = ctx->priv_data;
1107 VAAPIEncodeH264Options *opt = ctx->codec_options;
1108
1109 priv->mb_width = FFALIGN(avctx->width, 16) / 16;
1110 priv->mb_height = FFALIGN(avctx->height, 16) / 16;
1111
1112 if (ctx->va_rc_mode == VA_RC_CQP) {
1113 priv->fixed_qp_p = opt->qp;
1114 if (avctx->i_quant_factor > 0.0)
1115 priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +
1116 avctx->i_quant_offset) + 0.5);
1117 else
1118 priv->fixed_qp_idr = priv->fixed_qp_p;
1119 if (avctx->b_quant_factor > 0.0)
1120 priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +
1121 avctx->b_quant_offset) + 0.5);
1122 else
1123 priv->fixed_qp_b = priv->fixed_qp_p;
1124
1125 av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
1126 "%d / %d / %d for IDR- / P- / B-frames.\n",
1127 priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
1128
1129 } else if (ctx->va_rc_mode == VA_RC_CBR ||
1130 ctx->va_rc_mode == VA_RC_VBR) {
1131 // These still need to be set for pic_init_qp/slice_qp_delta.
1132 priv->fixed_qp_idr = 26;
1133 priv->fixed_qp_p = 26;
1134 priv->fixed_qp_b = 26;
1135
1136 av_log(avctx, AV_LOG_DEBUG, "Using %s-bitrate = %"PRId64" bps.\n",
1137 ctx->va_rc_mode == VA_RC_CBR ? "constant" : "variable",
1138 avctx->bit_rate);
1139
1140 } else {
1141 av_assert0(0 && "Invalid RC mode.");
1142 }
1143
1144 if (opt->quality > 0) {
1145#if VA_CHECK_VERSION(0, 36, 0)
1146 priv->quality_params.misc.type =
1147 VAEncMiscParameterTypeQualityLevel;
1148 priv->quality_params.quality.quality_level = opt->quality;
1149
1150 ctx->global_params[ctx->nb_global_params] =
1151 &priv->quality_params.misc;
1152 ctx->global_params_size[ctx->nb_global_params++] =
1153 sizeof(priv->quality_params);
1154#else
1155 av_log(avctx, AV_LOG_WARNING, "The encode quality option is not "
1156 "supported with this VAAPI version.\n");
1157#endif
1158 }
1159
1160 return 0;
1161}
1162
1163static const VAAPIEncodeType vaapi_encode_type_h264 = {
1164 .priv_data_size = sizeof(VAAPIEncodeH264Context),
1165
1166 .configure = &vaapi_encode_h264_configure,
1167
1168 .sequence_params_size = sizeof(VAEncSequenceParameterBufferH264),
1169 .init_sequence_params = &vaapi_encode_h264_init_sequence_params,
1170
1171 .picture_params_size = sizeof(VAEncPictureParameterBufferH264),
1172 .init_picture_params = &vaapi_encode_h264_init_picture_params,
1173
1174 .slice_params_size = sizeof(VAEncSliceParameterBufferH264),
1175 .init_slice_params = &vaapi_encode_h264_init_slice_params,
1176
1177 .sequence_header_type = VAEncPackedHeaderSequence,
1178 .write_sequence_header = &vaapi_encode_h264_write_sequence_header,
1179
1180 .slice_header_type = VAEncPackedHeaderH264_Slice,
1181 .write_slice_header = &vaapi_encode_h264_write_slice_header,
1182
1183 .write_extra_header = &vaapi_encode_h264_write_extra_header,
1184};
1185
1186static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
1187{
1188 VAAPIEncodeContext *ctx = avctx->priv_data;
1189 VAAPIEncodeH264Options *opt =
1190 (VAAPIEncodeH264Options*)ctx->codec_options_data;
1191
1192 ctx->codec = &vaapi_encode_type_h264;
1193
1194 switch (avctx->profile) {
1195 case FF_PROFILE_H264_CONSTRAINED_BASELINE:
1196 ctx->va_profile = VAProfileH264ConstrainedBaseline;
1197 if (avctx->max_b_frames != 0) {
1198 avctx->max_b_frames = 0;
1199 av_log(avctx, AV_LOG_WARNING, "H.264 constrained baseline profile "
1200 "doesn't support encoding with B frames, disabling them.\n");
1201 }
1202 break;
1203 case FF_PROFILE_H264_BASELINE:
1204 ctx->va_profile = VAProfileH264Baseline;
1205 if (avctx->max_b_frames != 0) {
1206 avctx->max_b_frames = 0;
1207 av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile "
1208 "doesn't support encoding with B frames, disabling them.\n");
1209 }
1210 break;
1211 case FF_PROFILE_H264_MAIN:
1212 ctx->va_profile = VAProfileH264Main;
1213 break;
1214 case FF_PROFILE_H264_EXTENDED:
1215 av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "
1216 "is not supported.\n");
1217 return AVERROR_PATCHWELCOME;
1218 case FF_PROFILE_UNKNOWN:
1219 case FF_PROFILE_H264_HIGH:
1220 ctx->va_profile = VAProfileH264High;
1221 break;
1222 case FF_PROFILE_H264_HIGH_10:
1223 case FF_PROFILE_H264_HIGH_10_INTRA:
1224 av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "
1225 "are not supported.\n");
1226 return AVERROR_PATCHWELCOME;
1227 case FF_PROFILE_H264_HIGH_422:
1228 case FF_PROFILE_H264_HIGH_422_INTRA:
1229 case FF_PROFILE_H264_HIGH_444:
1230 case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
1231 case FF_PROFILE_H264_HIGH_444_INTRA:
1232 case FF_PROFILE_H264_CAVLC_444:
1233 av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "
1234 "are not supported.\n");
1235 return AVERROR_PATCHWELCOME;
1236 default:
1237 av_log(avctx, AV_LOG_ERROR, "Unknown H.264 profile %d.\n",
1238 avctx->profile);
1239 return AVERROR(EINVAL);
1240 }
1241 if (opt->low_power) {
1242#if VA_CHECK_VERSION(0, 39, 2)
1243 ctx->va_entrypoint = VAEntrypointEncSliceLP;
1244#else
1245 av_log(avctx, AV_LOG_ERROR, "Low-power encoding is not "
1246 "supported with this VAAPI version.\n");
1247 return AVERROR(EINVAL);
1248#endif
1249 } else {
1250 ctx->va_entrypoint = VAEntrypointEncSlice;
1251 }
1252
1253 // Only 8-bit encode is supported.
1254 ctx->va_rt_format = VA_RT_FORMAT_YUV420;
1255
1256 if (avctx->bit_rate > 0) {
1257 if (avctx->rc_max_rate == avctx->bit_rate)
1258 ctx->va_rc_mode = VA_RC_CBR;
1259 else
1260 ctx->va_rc_mode = VA_RC_VBR;
1261 } else
1262 ctx->va_rc_mode = VA_RC_CQP;
1263
1264 ctx->va_packed_headers =
1265 VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.
1266 VA_ENC_PACKED_HEADER_SLICE | // Slice headers.
1267 VA_ENC_PACKED_HEADER_MISC; // SEI.
1268
1269 ctx->surface_width = FFALIGN(avctx->width, 16);
1270 ctx->surface_height = FFALIGN(avctx->height, 16);
1271
1272 return ff_vaapi_encode_init(avctx);
1273}
1274
1275#define OFFSET(x) (offsetof(VAAPIEncodeContext, codec_options_data) + \
1276 offsetof(VAAPIEncodeH264Options, x))
1277#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
1278static const AVOption vaapi_encode_h264_options[] = {
1279 { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
1280 OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },
1281 { "quality", "Set encode quality (trades off against speed, higher is faster)",
1282 OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8, FLAGS },
1283 { "low_power", "Use low-power encoding mode (experimental: only supported "
1284 "on some platforms, does not support all features)",
1285 OFFSET(low_power), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
1286 { NULL },
1287};
1288
1289static const AVCodecDefault vaapi_encode_h264_defaults[] = {
1290 { "profile", "100" },
1291 { "level", "51" },
1292 { "b", "0" },
1293 { "bf", "2" },
1294 { "g", "120" },
1295 { "i_qfactor", "1" },
1296 { "i_qoffset", "0" },
1297 { "b_qfactor", "6/5" },
1298 { "b_qoffset", "0" },
1299 { "qmin", "0" },
1300 { NULL },
1301};
1302
1303static const AVClass vaapi_encode_h264_class = {
1304 .class_name = "h264_vaapi",
1305 .item_name = av_default_item_name,
1306 .option = vaapi_encode_h264_options,
1307 .version = LIBAVUTIL_VERSION_INT,
1308};
1309
1310AVCodec ff_h264_vaapi_encoder = {
1311 .name = "h264_vaapi",
1312 .long_name = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),
1313 .type = AVMEDIA_TYPE_VIDEO,
1314 .id = AV_CODEC_ID_H264,
1315 .priv_data_size = (sizeof(VAAPIEncodeContext) +
1316 sizeof(VAAPIEncodeH264Options)),
1317 .init = &vaapi_encode_h264_init,
1318 .encode2 = &ff_vaapi_encode2,
1319 .close = &ff_vaapi_encode_close,
1320 .priv_class = &vaapi_encode_h264_class,
1321 .capabilities = AV_CODEC_CAP_DELAY,
1322 .defaults = vaapi_encode_h264_defaults,
1323 .pix_fmts = (const enum AVPixelFormat[]) {
1324 AV_PIX_FMT_VAAPI,
1325 AV_PIX_FMT_NONE,
1326 },
1327};
1328
generated by cgit at 2024-05-17 02:04:48 (GMT)