b550f6f24a8c7fd287d8090eaacb5934fee5e744
[libav.git] / libavcodec / vaapi_encode_h264.c
1 /*
2 * This file is part of Libav.
3 *
4 * Libav 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 * Libav 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 Libav; 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
34 enum {
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.
44 typedef 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.
113 typedef 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
134 typedef struct VAAPIEncodeH264Slice {
135 VAAPIEncodeH264MiscSliceParams misc_slice_params;
136 } VAAPIEncodeH264Slice;
137
138 typedef 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 idr_pic_count;
150
151 int cpb_delay;
152 int dpb_delay;
153
154 // Rate control configuration.
155 int send_timing_sei;
156
157 #if VA_CHECK_VERSION(0, 36, 0)
158 // Speed-quality tradeoff setting.
159 struct {
160 VAEncMiscParameterBuffer misc;
161 VAEncMiscParameterBufferQualityLevel quality;
162 } quality_params;
163 #endif
164 } VAAPIEncodeH264Context;
165
166 typedef struct VAAPIEncodeH264Options {
167 int qp;
168 int quality;
169 int low_power;
170 } VAAPIEncodeH264Options;
171
172
173 #define vseq_var(name) vseq->name, name
174 #define vseq_field(name) vseq->seq_fields.bits.name, name
175 #define vvui_field(name) vseq->vui_fields.bits.name, name
176 #define vpic_var(name) vpic->name, name
177 #define vpic_field(name) vpic->pic_fields.bits.name, name
178 #define vslice_var(name) vslice->name, name
179 #define vslice_field(name) vslice->slice_fields.bits.name, name
180 #define mseq_var(name) mseq->name, name
181 #define mslice_var(name) mslice->name, name
182
183 static void vaapi_encode_h264_write_nal_header(PutBitContext *pbc,
184 int nal_unit_type, int nal_ref_idc)
185 {
186 u(1, 0, forbidden_zero_bit);
187 u(2, nal_ref_idc, nal_ref_idc);
188 u(5, nal_unit_type, nal_unit_type);
189 }
190
191 static void vaapi_encode_h264_write_trailing_rbsp(PutBitContext *pbc)
192 {
193 u(1, 1, rbsp_stop_one_bit);
194 while (put_bits_count(pbc) & 7)
195 u(1, 0, rbsp_alignment_zero_bit);
196 }
197
198 static void vaapi_encode_h264_write_vui(PutBitContext *pbc,
199 VAAPIEncodeContext *ctx)
200 {
201 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
202 VAAPIEncodeH264Context *priv = ctx->priv_data;
203 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
204 int i;
205
206 u(1, vvui_field(aspect_ratio_info_present_flag));
207 if (vseq->vui_fields.bits.aspect_ratio_info_present_flag) {
208 u(8, vseq_var(aspect_ratio_idc));
209 if (vseq->aspect_ratio_idc == 255) {
210 u(16, vseq_var(sar_width));
211 u(16, vseq_var(sar_height));
212 }
213 }
214
215 u(1, mseq_var(overscan_info_present_flag));
216 if (mseq->overscan_info_present_flag)
217 u(1, mseq_var(overscan_appropriate_flag));
218
219 u(1, mseq_var(video_signal_type_present_flag));
220 if (mseq->video_signal_type_present_flag) {
221 u(3, mseq_var(video_format));
222 u(1, mseq_var(video_full_range_flag));
223 u(1, mseq_var(colour_description_present_flag));
224 if (mseq->colour_description_present_flag) {
225 u(8, mseq_var(colour_primaries));
226 u(8, mseq_var(transfer_characteristics));
227 u(8, mseq_var(matrix_coefficients));
228 }
229 }
230
231 u(1, mseq_var(chroma_loc_info_present_flag));
232 if (mseq->chroma_loc_info_present_flag) {
233 ue(mseq_var(chroma_sample_loc_type_top_field));
234 ue(mseq_var(chroma_sample_loc_type_bottom_field));
235 }
236
237 u(1, vvui_field(timing_info_present_flag));
238 if (vseq->vui_fields.bits.timing_info_present_flag) {
239 u(32, vseq_var(num_units_in_tick));
240 u(32, vseq_var(time_scale));
241 u(1, mseq_var(fixed_frame_rate_flag));
242 }
243
244 u(1, mseq_var(nal_hrd_parameters_present_flag));
245 if (mseq->nal_hrd_parameters_present_flag) {
246 ue(mseq_var(cpb_cnt_minus1));
247 u(4, mseq_var(bit_rate_scale));
248 u(4, mseq_var(cpb_size_scale));
249 for (i = 0; i <= mseq->cpb_cnt_minus1; i++) {
250 ue(mseq_var(bit_rate_value_minus1[i]));
251 ue(mseq_var(cpb_size_value_minus1[i]));
252 u(1, mseq_var(cbr_flag[i]));
253 }
254 u(5, mseq_var(initial_cpb_removal_delay_length_minus1));
255 u(5, mseq_var(cpb_removal_delay_length_minus1));
256 u(5, mseq_var(dpb_output_delay_length_minus1));
257 u(5, mseq_var(time_offset_length));
258 }
259 u(1, mseq_var(vcl_hrd_parameters_present_flag));
260 if (mseq->vcl_hrd_parameters_present_flag) {
261 av_assert0(0 && "vcl hrd parameters not supported");
262 }
263
264 if (mseq->nal_hrd_parameters_present_flag ||
265 mseq->vcl_hrd_parameters_present_flag)
266 u(1, mseq_var(low_delay_hrd_flag));
267 u(1, mseq_var(pic_struct_present_flag));
268
269 u(1, vvui_field(bitstream_restriction_flag));
270 if (vseq->vui_fields.bits.bitstream_restriction_flag) {
271 u(1, mseq_var(motion_vectors_over_pic_boundaries_flag));
272 ue(mseq_var(max_bytes_per_pic_denom));
273 ue(mseq_var(max_bits_per_mb_denom));
274 ue(vvui_field(log2_max_mv_length_horizontal));
275 ue(vvui_field(log2_max_mv_length_vertical));
276 ue(mseq_var(max_num_reorder_frames));
277 ue(mseq_var(max_dec_pic_buffering));
278 }
279 }
280
281 static void vaapi_encode_h264_write_sps(PutBitContext *pbc,
282 VAAPIEncodeContext *ctx)
283 {
284 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
285 VAAPIEncodeH264Context *priv = ctx->priv_data;
286 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
287 int i;
288
289 vaapi_encode_h264_write_nal_header(pbc, H264_NAL_SPS, 3);
290
291 u(8, mseq_var(profile_idc));
292 u(1, mseq_var(constraint_set0_flag));
293 u(1, mseq_var(constraint_set1_flag));
294 u(1, mseq_var(constraint_set2_flag));
295 u(1, mseq_var(constraint_set3_flag));
296 u(1, mseq_var(constraint_set4_flag));
297 u(1, mseq_var(constraint_set5_flag));
298 u(2, 0, reserved_zero_2bits);
299
300 u(8, vseq_var(level_idc));
301
302 ue(vseq_var(seq_parameter_set_id));
303
304 if (mseq->profile_idc == 100 || mseq->profile_idc == 110 ||
305 mseq->profile_idc == 122 || mseq->profile_idc == 244 ||
306 mseq->profile_idc == 44 || mseq->profile_idc == 83 ||
307 mseq->profile_idc == 86 || mseq->profile_idc == 118 ||
308 mseq->profile_idc == 128 || mseq->profile_idc == 138) {
309 ue(vseq_field(chroma_format_idc));
310
311 if (vseq->seq_fields.bits.chroma_format_idc == 3)
312 u(1, mseq_var(separate_colour_plane_flag));
313
314 ue(vseq_var(bit_depth_luma_minus8));
315 ue(vseq_var(bit_depth_chroma_minus8));
316
317 u(1, mseq_var(qpprime_y_zero_transform_bypass_flag));
318
319 u(1, vseq_field(seq_scaling_matrix_present_flag));
320 if (vseq->seq_fields.bits.seq_scaling_matrix_present_flag) {
321 av_assert0(0 && "scaling matrices not supported");
322 }
323 }
324
325 ue(vseq_field(log2_max_frame_num_minus4));
326 ue(vseq_field(pic_order_cnt_type));
327
328 if (vseq->seq_fields.bits.pic_order_cnt_type == 0) {
329 ue(vseq_field(log2_max_pic_order_cnt_lsb_minus4));
330 } else if (vseq->seq_fields.bits.pic_order_cnt_type == 1) {
331 u(1, mseq_var(delta_pic_order_always_zero_flag));
332 se(vseq_var(offset_for_non_ref_pic));
333 se(vseq_var(offset_for_top_to_bottom_field));
334 ue(vseq_var(num_ref_frames_in_pic_order_cnt_cycle));
335
336 for (i = 0; i < vseq->num_ref_frames_in_pic_order_cnt_cycle; i++)
337 se(vseq_var(offset_for_ref_frame[i]));
338 }
339
340 ue(vseq_var(max_num_ref_frames));
341 u(1, mseq_var(gaps_in_frame_num_allowed_flag));
342
343 ue(vseq->picture_width_in_mbs - 1, pic_width_in_mbs_minus1);
344 ue(vseq->picture_height_in_mbs - 1, pic_height_in_mbs_minus1);
345
346 u(1, vseq_field(frame_mbs_only_flag));
347 if (!vseq->seq_fields.bits.frame_mbs_only_flag)
348 u(1, vseq_field(mb_adaptive_frame_field_flag));
349
350 u(1, vseq_field(direct_8x8_inference_flag));
351
352 u(1, vseq_var(frame_cropping_flag));
353 if (vseq->frame_cropping_flag) {
354 ue(vseq_var(frame_crop_left_offset));
355 ue(vseq_var(frame_crop_right_offset));
356 ue(vseq_var(frame_crop_top_offset));
357 ue(vseq_var(frame_crop_bottom_offset));
358 }
359
360 u(1, vseq_var(vui_parameters_present_flag));
361 if (vseq->vui_parameters_present_flag)
362 vaapi_encode_h264_write_vui(pbc, ctx);
363
364 vaapi_encode_h264_write_trailing_rbsp(pbc);
365 }
366
367 static void vaapi_encode_h264_write_pps(PutBitContext *pbc,
368 VAAPIEncodeContext *ctx)
369 {
370 VAEncPictureParameterBufferH264 *vpic = ctx->codec_picture_params;
371 VAAPIEncodeH264Context *priv = ctx->priv_data;
372 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
373
374 vaapi_encode_h264_write_nal_header(pbc, H264_NAL_PPS, 3);
375
376 ue(vpic_var(pic_parameter_set_id));
377 ue(vpic_var(seq_parameter_set_id));
378
379 u(1, vpic_field(entropy_coding_mode_flag));
380 u(1, mseq_var(bottom_field_pic_order_in_frame_present_flag));
381
382 ue(mseq_var(num_slice_groups_minus1));
383 if (mseq->num_slice_groups_minus1 > 0) {
384 ue(mseq_var(slice_group_map_type));
385 av_assert0(0 && "slice groups not supported");
386 }
387
388 ue(vpic_var(num_ref_idx_l0_active_minus1));
389 ue(vpic_var(num_ref_idx_l1_active_minus1));
390
391 u(1, vpic_field(weighted_pred_flag));
392 u(2, vpic_field(weighted_bipred_idc));
393
394 se(vpic->pic_init_qp - 26, pic_init_qp_minus26);
395 se(mseq_var(pic_init_qs_minus26));
396 se(vpic_var(chroma_qp_index_offset));
397
398 u(1, vpic_field(deblocking_filter_control_present_flag));
399 u(1, vpic_field(constrained_intra_pred_flag));
400 u(1, vpic_field(redundant_pic_cnt_present_flag));
401 u(1, vpic_field(transform_8x8_mode_flag));
402
403 u(1, vpic_field(pic_scaling_matrix_present_flag));
404 if (vpic->pic_fields.bits.pic_scaling_matrix_present_flag) {
405 av_assert0(0 && "scaling matrices not supported");
406 }
407
408 se(vpic_var(second_chroma_qp_index_offset));
409
410 vaapi_encode_h264_write_trailing_rbsp(pbc);
411 }
412
413 static void vaapi_encode_h264_write_slice_header2(PutBitContext *pbc,
414 VAAPIEncodeContext *ctx,
415 VAAPIEncodePicture *pic,
416 VAAPIEncodeSlice *slice)
417 {
418 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
419 VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
420 VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
421 VAAPIEncodeH264Context *priv = ctx->priv_data;
422 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
423 VAAPIEncodeH264Slice *pslice = slice->priv_data;
424 VAAPIEncodeH264MiscSliceParams *mslice = &pslice->misc_slice_params;
425
426 vaapi_encode_h264_write_nal_header(pbc, mslice->nal_unit_type,
427 mslice->nal_ref_idc);
428
429 ue(vslice->macroblock_address, first_mb_in_slice);
430 ue(vslice_var(slice_type));
431 ue(vpic_var(pic_parameter_set_id));
432
433 if (mseq->separate_colour_plane_flag) {
434 u(2, mslice_var(colour_plane_id));
435 }
436
437 u(4 + vseq->seq_fields.bits.log2_max_frame_num_minus4,
438 (vpic->frame_num &
439 ((1 << (4 + vseq->seq_fields.bits.log2_max_frame_num_minus4)) - 1)),
440 frame_num);
441
442 if (!vseq->seq_fields.bits.frame_mbs_only_flag) {
443 u(1, mslice_var(field_pic_flag));
444 if (mslice->field_pic_flag)
445 u(1, mslice_var(bottom_field_flag));
446 }
447
448 if (vpic->pic_fields.bits.idr_pic_flag) {
449 ue(vslice_var(idr_pic_id));
450 }
451
452 if (vseq->seq_fields.bits.pic_order_cnt_type == 0) {
453 u(4 + vseq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4,
454 vslice_var(pic_order_cnt_lsb));
455 if (mseq->bottom_field_pic_order_in_frame_present_flag &&
456 !mslice->field_pic_flag) {
457 se(vslice_var(delta_pic_order_cnt_bottom));
458 }
459 }
460
461 if (vseq->seq_fields.bits.pic_order_cnt_type == 1 &&
462 !vseq->seq_fields.bits.delta_pic_order_always_zero_flag) {
463 se(vslice_var(delta_pic_order_cnt[0]));
464 if (mseq->bottom_field_pic_order_in_frame_present_flag &&
465 !mslice->field_pic_flag) {
466 se(vslice_var(delta_pic_order_cnt[1]));
467 }
468 }
469
470 if (vpic->pic_fields.bits.redundant_pic_cnt_present_flag) {
471 ue(mslice_var(redundant_pic_cnt));
472 }
473
474 if (vslice->slice_type == SLICE_TYPE_B) {
475 u(1, vslice_var(direct_spatial_mv_pred_flag));
476 }
477
478 if (vslice->slice_type == SLICE_TYPE_P ||
479 vslice->slice_type == SLICE_TYPE_SP ||
480 vslice->slice_type == SLICE_TYPE_B) {
481 u(1, vslice_var(num_ref_idx_active_override_flag));
482 if (vslice->num_ref_idx_active_override_flag) {
483 ue(vslice_var(num_ref_idx_l0_active_minus1));
484 if (vslice->slice_type == SLICE_TYPE_B)
485 ue(vslice_var(num_ref_idx_l1_active_minus1));
486 }
487 }
488
489 if (mslice->nal_unit_type == 20 || mslice->nal_unit_type == 21) {
490 av_assert0(0 && "no MVC support");
491 } else {
492 if (vslice->slice_type % 5 != 2 && vslice->slice_type % 5 != 4) {
493 u(1, mslice_var(ref_pic_list_modification_flag_l0));
494 if (mslice->ref_pic_list_modification_flag_l0) {
495 av_assert0(0 && "ref pic list modification");
496 }
497 }
498 if (vslice->slice_type % 5 == 1) {
499 u(1, mslice_var(ref_pic_list_modification_flag_l1));
500 if (mslice->ref_pic_list_modification_flag_l1) {
501 av_assert0(0 && "ref pic list modification");
502 }
503 }
504 }
505
506 if ((vpic->pic_fields.bits.weighted_pred_flag &&
507 (vslice->slice_type == SLICE_TYPE_P ||
508 vslice->slice_type == SLICE_TYPE_SP)) ||
509 (vpic->pic_fields.bits.weighted_bipred_idc == 1 &&
510 vslice->slice_type == SLICE_TYPE_B)) {
511 av_assert0(0 && "prediction weights not supported");
512 }
513
514 av_assert0(mslice->nal_ref_idc > 0 ==
515 vpic->pic_fields.bits.reference_pic_flag);
516 if (mslice->nal_ref_idc != 0) {
517 if (vpic->pic_fields.bits.idr_pic_flag) {
518 u(1, mslice_var(no_output_of_prior_pics_flag));
519 u(1, mslice_var(long_term_reference_flag));
520 } else {
521 u(1, mslice_var(adaptive_ref_pic_marking_mode_flag));
522 if (mslice->adaptive_ref_pic_marking_mode_flag) {
523 av_assert0(0 && "MMCOs not supported");
524 }
525 }
526 }
527
528 if (vpic->pic_fields.bits.entropy_coding_mode_flag &&
529 vslice->slice_type != SLICE_TYPE_I &&
530 vslice->slice_type != SLICE_TYPE_SI) {
531 ue(vslice_var(cabac_init_idc));
532 }
533
534 se(vslice_var(slice_qp_delta));
535 if (vslice->slice_type == SLICE_TYPE_SP ||
536 vslice->slice_type == SLICE_TYPE_SI) {
537 if (vslice->slice_type == SLICE_TYPE_SP)
538 u(1, mslice_var(sp_for_switch_flag));
539 se(mslice_var(slice_qs_delta));
540 }
541
542 if (vpic->pic_fields.bits.deblocking_filter_control_present_flag) {
543 ue(vslice_var(disable_deblocking_filter_idc));
544 if (vslice->disable_deblocking_filter_idc != 1) {
545 se(vslice_var(slice_alpha_c0_offset_div2));
546 se(vslice_var(slice_beta_offset_div2));
547 }
548 }
549
550 if (mseq->num_slice_groups_minus1 > 0 &&
551 mseq->slice_group_map_type >= 3 && mseq->slice_group_map_type <= 5) {
552 av_assert0(0 && "slice groups not supported");
553 }
554
555 // No alignment - this need not be a byte boundary.
556 }
557
558 static void vaapi_encode_h264_write_buffering_period(PutBitContext *pbc,
559 VAAPIEncodeContext *ctx,
560 VAAPIEncodePicture *pic)
561 {
562 VAAPIEncodeH264Context *priv = ctx->priv_data;
563 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
564 VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
565 int i;
566
567 ue(vpic_var(seq_parameter_set_id));
568
569 if (mseq->nal_hrd_parameters_present_flag) {
570 for (i = 0; i <= mseq->cpb_cnt_minus1; i++) {
571 u(mseq->initial_cpb_removal_delay_length_minus1 + 1,
572 mseq_var(initial_cpb_removal_delay));
573 u(mseq->initial_cpb_removal_delay_length_minus1 + 1,
574 mseq_var(initial_cpb_removal_delay_offset));
575 }
576 }
577 if (mseq->vcl_hrd_parameters_present_flag) {
578 av_assert0(0 && "vcl hrd parameters not supported");
579 }
580 }
581
582 static void vaapi_encode_h264_write_pic_timing(PutBitContext *pbc,
583 VAAPIEncodeContext *ctx,
584 VAAPIEncodePicture *pic)
585 {
586 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
587 VAAPIEncodeH264Context *priv = ctx->priv_data;
588 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
589 int i, num_clock_ts;
590
591 if (mseq->nal_hrd_parameters_present_flag ||
592 mseq->vcl_hrd_parameters_present_flag) {
593 u(mseq->cpb_removal_delay_length_minus1 + 1,
594 2 * vseq->num_units_in_tick * priv->cpb_delay,
595 cpb_removal_delay);
596 u(mseq->dpb_output_delay_length_minus1 + 1,
597 2 * vseq->num_units_in_tick * priv->dpb_delay,
598 dpb_output_delay);
599 }
600 if (mseq->pic_struct_present_flag) {
601 u(4, mseq_var(pic_struct));
602 num_clock_ts = (mseq->pic_struct <= 2 ? 1 :
603 mseq->pic_struct <= 4 ? 2 :
604 mseq->pic_struct <= 8 ? 3 : 0);
605 for (i = 0; i < num_clock_ts; i++) {
606 u(1, 0, clock_timestamp_flag[i]);
607 // No full timestamp information.
608 }
609 }
610 }
611
612 static void vaapi_encode_h264_write_identifier(PutBitContext *pbc,
613 VAAPIEncodeContext *ctx,
614 VAAPIEncodePicture *pic)
615 {
616 const char *lavc = LIBAVCODEC_IDENT;
617 const char *vaapi = VA_VERSION_S;
618 const char *driver = vaQueryVendorString(ctx->hwctx->display);
619 char tmp[256];
620 int i;
621
622 // Random (version 4) ISO 11578 UUID.
623 uint8_t uuid[16] = {
624 0x59, 0x94, 0x8b, 0x28, 0x11, 0xec, 0x45, 0xaf,
625 0x96, 0x75, 0x19, 0xd4, 0x1f, 0xea, 0xa9, 0x4d,
626 };
627
628 for (i = 0; i < 16; i++)
629 u(8, uuid[i], uuid_iso_iec_11578);
630
631 snprintf(tmp, sizeof(tmp), "%s / VAAPI %s / %s", lavc, vaapi, driver);
632 for (i = 0; i < sizeof(tmp) && tmp[i]; i++)
633 u(8, tmp[i], user_data_payload_byte);
634 }
635
636 static void vaapi_encode_h264_write_sei(PutBitContext *pbc,
637 VAAPIEncodeContext *ctx,
638 VAAPIEncodePicture *pic)
639 {
640 VAAPIEncodeH264Context *priv = ctx->priv_data;
641 PutBitContext payload_bits;
642 char payload[256];
643 int payload_type, payload_size, i;
644 void (*write_payload)(PutBitContext *pbc,
645 VAAPIEncodeContext *ctx,
646 VAAPIEncodePicture *pic) = NULL;
647
648 vaapi_encode_h264_write_nal_header(pbc, H264_NAL_SEI, 0);
649
650 for (payload_type = 0; payload_type < 64; payload_type++) {
651 switch (payload_type) {
652 case SEI_TYPE_BUFFERING_PERIOD:
653 if (!priv->send_timing_sei ||
654 pic->type != PICTURE_TYPE_IDR)
655 continue;
656 write_payload = &vaapi_encode_h264_write_buffering_period;
657 break;
658 case SEI_TYPE_PIC_TIMING:
659 if (!priv->send_timing_sei)
660 continue;
661 write_payload = &vaapi_encode_h264_write_pic_timing;
662 break;
663 case SEI_TYPE_USER_DATA_UNREGISTERED:
664 if (pic->encode_order != 0)
665 continue;
666 write_payload = &vaapi_encode_h264_write_identifier;
667 break;
668 default:
669 continue;
670 }
671
672 init_put_bits(&payload_bits, payload, sizeof(payload));
673 write_payload(&payload_bits, ctx, pic);
674 if (put_bits_count(&payload_bits) & 7) {
675 write_u(&payload_bits, 1, 1, bit_equal_to_one);
676 while (put_bits_count(&payload_bits) & 7)
677 write_u(&payload_bits, 1, 0, bit_equal_to_zero);
678 }
679 payload_size = put_bits_count(&payload_bits) / 8;
680 flush_put_bits(&payload_bits);
681
682 u(8, payload_type, last_payload_type_byte);
683 u(8, payload_size, last_payload_size_byte);
684 for (i = 0; i < payload_size; i++)
685 u(8, payload[i] & 0xff, sei_payload);
686 }
687
688 vaapi_encode_h264_write_trailing_rbsp(pbc);
689 }
690
691 static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,
692 char *data, size_t *data_len)
693 {
694 VAAPIEncodeContext *ctx = avctx->priv_data;
695 PutBitContext pbc;
696 char tmp[256];
697 int err;
698 size_t nal_len, bit_len, bit_pos, next_len;
699
700 bit_len = *data_len;
701 bit_pos = 0;
702
703 init_put_bits(&pbc, tmp, sizeof(tmp));
704 vaapi_encode_h264_write_sps(&pbc, ctx);
705 nal_len = put_bits_count(&pbc);
706 flush_put_bits(&pbc);
707
708 next_len = bit_len - bit_pos;
709 err = ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data + bit_pos / 8,
710 &next_len,
711 tmp, nal_len);
712 if (err < 0)
713 return err;
714 bit_pos += next_len;
715
716 init_put_bits(&pbc, tmp, sizeof(tmp));
717 vaapi_encode_h264_write_pps(&pbc, ctx);
718 nal_len = put_bits_count(&pbc);
719 flush_put_bits(&pbc);
720
721 next_len = bit_len - bit_pos;
722 err = ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data + bit_pos / 8,
723 &next_len,
724 tmp, nal_len);
725 if (err < 0)
726 return err;
727 bit_pos += next_len;
728
729 *data_len = bit_pos;
730 return 0;
731 }
732
733 static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,
734 VAAPIEncodePicture *pic,
735 VAAPIEncodeSlice *slice,
736 char *data, size_t *data_len)
737 {
738 VAAPIEncodeContext *ctx = avctx->priv_data;
739 PutBitContext pbc;
740 char tmp[256];
741 size_t header_len;
742
743 init_put_bits(&pbc, tmp, sizeof(tmp));
744 vaapi_encode_h264_write_slice_header2(&pbc, ctx, pic, slice);
745 header_len = put_bits_count(&pbc);
746 flush_put_bits(&pbc);
747
748 return ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data, data_len,
749 tmp, header_len);
750 }
751
752 static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,
753 VAAPIEncodePicture *pic,
754 int index, int *type,
755 char *data, size_t *data_len)
756 {
757 VAAPIEncodeContext *ctx = avctx->priv_data;
758 PutBitContext pbc;
759 char tmp[256];
760 size_t header_len;
761
762 if (index == 0 && ctx->va_rc_mode == VA_RC_CBR) {
763 *type = VAEncPackedHeaderH264_SEI;
764
765 init_put_bits(&pbc, tmp, sizeof(tmp));
766 vaapi_encode_h264_write_sei(&pbc, ctx, pic);
767 header_len = put_bits_count(&pbc);
768 flush_put_bits(&pbc);
769
770 return ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data, data_len,
771 tmp, header_len);
772
773 } else {
774 return AVERROR_EOF;
775 }
776 }
777
778 static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
779 {
780 VAAPIEncodeContext *ctx = avctx->priv_data;
781 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
782 VAEncPictureParameterBufferH264 *vpic = ctx->codec_picture_params;
783 VAAPIEncodeH264Context *priv = ctx->priv_data;
784 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
785 int i;
786
787 {
788 vseq->seq_parameter_set_id = 0;
789
790 vseq->level_idc = avctx->level;
791
792 vseq->max_num_ref_frames = 1 + (avctx->max_b_frames > 0);
793
794 vseq->picture_width_in_mbs = priv->mb_width;
795 vseq->picture_height_in_mbs = priv->mb_height;
796
797 vseq->seq_fields.bits.chroma_format_idc = 1;
798 vseq->seq_fields.bits.frame_mbs_only_flag = 1;
799 vseq->seq_fields.bits.direct_8x8_inference_flag = 1;
800 vseq->seq_fields.bits.log2_max_frame_num_minus4 = 4;
801 vseq->seq_fields.bits.pic_order_cnt_type = 0;
802
803 if (avctx->width != ctx->surface_width ||
804 avctx->height != ctx->surface_height) {
805 vseq->frame_cropping_flag = 1;
806
807 vseq->frame_crop_left_offset = 0;
808 vseq->frame_crop_right_offset =
809 (ctx->surface_width - avctx->width) / 2;
810 vseq->frame_crop_top_offset = 0;
811 vseq->frame_crop_bottom_offset =
812 (ctx->surface_height - avctx->height) / 2;
813 } else {
814 vseq->frame_cropping_flag = 0;
815 }
816
817 vseq->vui_parameters_present_flag = 1;
818 if (avctx->sample_aspect_ratio.num != 0) {
819 vseq->vui_fields.bits.aspect_ratio_info_present_flag = 1;
820 // There is a large enum of these which we could support
821 // individually rather than using the generic X/Y form?
822 if (avctx->sample_aspect_ratio.num ==
823 avctx->sample_aspect_ratio.den) {
824 vseq->aspect_ratio_idc = 1;
825 } else {
826 vseq->aspect_ratio_idc = 255; // Extended SAR.
827 vseq->sar_width = avctx->sample_aspect_ratio.num;
828 vseq->sar_height = avctx->sample_aspect_ratio.den;
829 }
830 }
831 if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
832 avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
833 avctx->colorspace != AVCOL_SPC_UNSPECIFIED) {
834 mseq->video_signal_type_present_flag = 1;
835 mseq->video_format = 5; // Unspecified.
836 mseq->video_full_range_flag = 0;
837 mseq->colour_description_present_flag = 1;
838 // These enums are derived from the standard and hence
839 // we can just use the values directly.
840 mseq->colour_primaries = avctx->color_primaries;
841 mseq->transfer_characteristics = avctx->color_trc;
842 mseq->matrix_coefficients = avctx->colorspace;
843 }
844
845 vseq->vui_fields.bits.bitstream_restriction_flag = 1;
846 mseq->motion_vectors_over_pic_boundaries_flag = 1;
847 mseq->max_bytes_per_pic_denom = 0;
848 mseq->max_bits_per_mb_denom = 0;
849 vseq->vui_fields.bits.log2_max_mv_length_horizontal = 16;
850 vseq->vui_fields.bits.log2_max_mv_length_vertical = 16;
851
852 mseq->max_num_reorder_frames = (avctx->max_b_frames > 0);
853 mseq->max_dec_pic_buffering = vseq->max_num_ref_frames;
854
855 vseq->bits_per_second = avctx->bit_rate;
856
857 vseq->vui_fields.bits.timing_info_present_flag = 1;
858 if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
859 vseq->num_units_in_tick = avctx->framerate.den;
860 vseq->time_scale = 2 * avctx->framerate.num;
861 mseq->fixed_frame_rate_flag = 1;
862 } else {
863 vseq->num_units_in_tick = avctx->time_base.num;
864 vseq->time_scale = 2 * avctx->time_base.den;
865 mseq->fixed_frame_rate_flag = 0;
866 }
867
868 if (ctx->va_rc_mode == VA_RC_CBR) {
869 priv->send_timing_sei = 1;
870 mseq->nal_hrd_parameters_present_flag = 1;
871
872 mseq->cpb_cnt_minus1 = 0;
873
874 // Try to scale these to a sensible range so that the
875 // golomb encode of the value is not overlong.
876 mseq->bit_rate_scale =
877 av_clip_uintp2(av_log2(avctx->bit_rate) - 15 - 6, 4);
878 mseq->bit_rate_value_minus1[0] =
879 (avctx->bit_rate >> mseq->bit_rate_scale + 6) - 1;
880
881 mseq->cpb_size_scale =
882 av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4);
883 mseq->cpb_size_value_minus1[0] =
884 (ctx->hrd_params.hrd.buffer_size >> mseq->cpb_size_scale + 4) - 1;
885
886 // CBR mode isn't actually available here, despite naming.
887 mseq->cbr_flag[0] = 0;
888
889 mseq->initial_cpb_removal_delay_length_minus1 = 23;
890 mseq->cpb_removal_delay_length_minus1 = 23;
891 mseq->dpb_output_delay_length_minus1 = 7;
892 mseq->time_offset_length = 0;
893
894 // This calculation can easily overflow 32 bits.
895 mseq->initial_cpb_removal_delay = 90000 *
896 (uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness /
897 ctx->hrd_params.hrd.buffer_size;
898
899 mseq->initial_cpb_removal_delay_offset = 0;
900 } else {
901 priv->send_timing_sei = 0;
902 mseq->nal_hrd_parameters_present_flag = 0;
903 }
904
905 vseq->intra_period = ctx->p_per_i * (ctx->b_per_p + 1);
906 vseq->intra_idr_period = vseq->intra_period;
907 vseq->ip_period = ctx->b_per_p + 1;
908 }
909
910 {
911 vpic->CurrPic.picture_id = VA_INVALID_ID;
912 vpic->CurrPic.flags = VA_PICTURE_H264_INVALID;
913
914 for (i = 0; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
915 vpic->ReferenceFrames[i].picture_id = VA_INVALID_ID;
916 vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
917 }
918
919 vpic->coded_buf = VA_INVALID_ID;
920
921 vpic->pic_parameter_set_id = 0;
922 vpic->seq_parameter_set_id = 0;
923
924 vpic->num_ref_idx_l0_active_minus1 = 0;
925 vpic->num_ref_idx_l1_active_minus1 = 0;
926
927 vpic->pic_fields.bits.entropy_coding_mode_flag =
928 ((avctx->profile & 0xff) != 66);
929 vpic->pic_fields.bits.weighted_pred_flag = 0;
930 vpic->pic_fields.bits.weighted_bipred_idc = 0;
931 vpic->pic_fields.bits.transform_8x8_mode_flag =
932 ((avctx->profile & 0xff) >= 100);
933
934 vpic->pic_init_qp = priv->fixed_qp_idr;
935 }
936
937 {
938 mseq->profile_idc = avctx->profile & 0xff;
939
940 if (avctx->profile & FF_PROFILE_H264_CONSTRAINED)
941 mseq->constraint_set1_flag = 1;
942 if (avctx->profile & FF_PROFILE_H264_INTRA)
943 mseq->constraint_set3_flag = 1;
944 }
945
946 return 0;
947 }
948
949 static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
950 VAAPIEncodePicture *pic)
951 {
952 VAAPIEncodeContext *ctx = avctx->priv_data;
953 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
954 VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
955 VAAPIEncodeH264Context *priv = ctx->priv_data;
956 int i;
957
958 if (pic->type == PICTURE_TYPE_IDR) {
959 av_assert0(pic->display_order == pic->encode_order);
960 vpic->frame_num = 0;
961 priv->next_frame_num = 1;
962 priv->cpb_delay = 0;
963 } else {
964 vpic->frame_num = priv->next_frame_num;
965 if (pic->type != PICTURE_TYPE_B) {
966 // nal_ref_idc != 0
967 ++priv->next_frame_num;
968 }
969 ++priv->cpb_delay;
970 }
971 priv->dpb_delay = pic->display_order - pic->encode_order + 1;
972
973 vpic->frame_num = vpic->frame_num &
974 ((1 << (4 + vseq->seq_fields.bits.log2_max_frame_num_minus4)) - 1);
975
976 vpic->CurrPic.picture_id = pic->recon_surface;
977 vpic->CurrPic.frame_idx = vpic->frame_num;
978 vpic->CurrPic.flags = 0;
979 vpic->CurrPic.TopFieldOrderCnt = pic->display_order;
980 vpic->CurrPic.BottomFieldOrderCnt = pic->display_order;
981
982 for (i = 0; i < pic->nb_refs; i++) {
983 VAAPIEncodePicture *ref = pic->refs[i];
984 av_assert0(ref && ref->encode_order < pic->encode_order);
985 vpic->ReferenceFrames[i].picture_id = ref->recon_surface;
986 vpic->ReferenceFrames[i].frame_idx = ref->encode_order;
987 vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
988 vpic->ReferenceFrames[i].TopFieldOrderCnt = ref->display_order;
989 vpic->ReferenceFrames[i].BottomFieldOrderCnt = ref->display_order;
990 }
991 for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
992 vpic->ReferenceFrames[i].picture_id = VA_INVALID_ID;
993 vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
994 }
995
996 vpic->coded_buf = pic->output_buffer;
997
998 vpic->pic_fields.bits.idr_pic_flag = (pic->type == PICTURE_TYPE_IDR);
999 vpic->pic_fields.bits.reference_pic_flag = (pic->type != PICTURE_TYPE_B);
1000
1001 pic->nb_slices = 1;
1002
1003 return 0;
1004 }
1005
1006 static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,
1007 VAAPIEncodePicture *pic,
1008 VAAPIEncodeSlice *slice)
1009 {
1010 VAAPIEncodeContext *ctx = avctx->priv_data;
1011 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
1012 VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
1013 VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
1014 VAAPIEncodeH264Context *priv = ctx->priv_data;
1015 VAAPIEncodeH264Slice *pslice;
1016 VAAPIEncodeH264MiscSliceParams *mslice;
1017 int i;
1018
1019 slice->priv_data = av_mallocz(sizeof(*pslice));
1020 if (!slice->priv_data)
1021 return AVERROR(ENOMEM);
1022 pslice = slice->priv_data;
1023 mslice = &pslice->misc_slice_params;
1024
1025 if (pic->type == PICTURE_TYPE_IDR)
1026 mslice->nal_unit_type = H264_NAL_IDR_SLICE;
1027 else
1028 mslice->nal_unit_type = H264_NAL_SLICE;
1029
1030 switch (pic->type) {
1031 case PICTURE_TYPE_IDR:
1032 vslice->slice_type = SLICE_TYPE_I;
1033 mslice->nal_ref_idc = 3;
1034 break;
1035 case PICTURE_TYPE_I:
1036 vslice->slice_type = SLICE_TYPE_I;
1037 mslice->nal_ref_idc = 2;
1038 break;
1039 case PICTURE_TYPE_P:
1040 vslice->slice_type = SLICE_TYPE_P;
1041 mslice->nal_ref_idc = 1;
1042 break;
1043 case PICTURE_TYPE_B:
1044 vslice->slice_type = SLICE_TYPE_B;
1045 mslice->nal_ref_idc = 0;
1046 break;
1047 default:
1048 av_assert0(0 && "invalid picture type");
1049 }
1050
1051 // Only one slice per frame.
1052 vslice->macroblock_address = 0;
1053 vslice->num_macroblocks = priv->mb_width * priv->mb_height;
1054
1055 vslice->macroblock_info = VA_INVALID_ID;
1056
1057 vslice->pic_parameter_set_id = vpic->pic_parameter_set_id;
1058 vslice->idr_pic_id = priv->idr_pic_count++;
1059
1060 vslice->pic_order_cnt_lsb = pic->display_order &
1061 ((1 << (4 + vseq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4)) - 1);
1062
1063 for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {
1064 vslice->RefPicList0[i].picture_id = VA_INVALID_ID;
1065 vslice->RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
1066 vslice->RefPicList1[i].picture_id = VA_INVALID_ID;
1067 vslice->RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
1068 }
1069
1070 av_assert0(pic->nb_refs <= 2);
1071 if (pic->nb_refs >= 1) {
1072 // Backward reference for P- or B-frame.
1073 av_assert0(pic->type == PICTURE_TYPE_P ||
1074 pic->type == PICTURE_TYPE_B);
1075
1076 vslice->num_ref_idx_l0_active_minus1 = 0;
1077 vslice->RefPicList0[0] = vpic->ReferenceFrames[0];
1078 }
1079 if (pic->nb_refs >= 2) {
1080 // Forward reference for B-frame.
1081 av_assert0(pic->type == PICTURE_TYPE_B);
1082
1083 vslice->num_ref_idx_l1_active_minus1 = 0;
1084 vslice->RefPicList1[0] = vpic->ReferenceFrames[1];
1085 }
1086
1087 if (pic->type == PICTURE_TYPE_B)
1088 vslice->slice_qp_delta = priv->fixed_qp_b - vpic->pic_init_qp;
1089 else if (pic->type == PICTURE_TYPE_P)
1090 vslice->slice_qp_delta = priv->fixed_qp_p - vpic->pic_init_qp;
1091 else
1092 vslice->slice_qp_delta = priv->fixed_qp_idr - vpic->pic_init_qp;
1093
1094 vslice->direct_spatial_mv_pred_flag = 1;
1095
1096 return 0;
1097 }
1098
1099 static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)
1100 {
1101 VAAPIEncodeContext *ctx = avctx->priv_data;
1102 VAAPIEncodeH264Context *priv = ctx->priv_data;
1103 VAAPIEncodeH264Options *opt = ctx->codec_options;
1104
1105 priv->mb_width = FFALIGN(avctx->width, 16) / 16;
1106 priv->mb_height = FFALIGN(avctx->height, 16) / 16;
1107
1108 if (ctx->va_rc_mode == VA_RC_CQP) {
1109 priv->fixed_qp_p = opt->qp;
1110 if (avctx->i_quant_factor > 0.0)
1111 priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +
1112 avctx->i_quant_offset) + 0.5);
1113 else
1114 priv->fixed_qp_idr = priv->fixed_qp_p;
1115 if (avctx->b_quant_factor > 0.0)
1116 priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +
1117 avctx->b_quant_offset) + 0.5);
1118 else
1119 priv->fixed_qp_b = priv->fixed_qp_p;
1120
1121 av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
1122 "%d / %d / %d for IDR- / P- / B-frames.\n",
1123 priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
1124
1125 } else if (ctx->va_rc_mode == VA_RC_CBR) {
1126 // These still need to be set for pic_init_qp/slice_qp_delta.
1127 priv->fixed_qp_idr = 26;
1128 priv->fixed_qp_p = 26;
1129 priv->fixed_qp_b = 26;
1130
1131 av_log(avctx, AV_LOG_DEBUG, "Using constant-bitrate = %d bps.\n",
1132 avctx->bit_rate);
1133
1134 } else {
1135 av_assert0(0 && "Invalid RC mode.");
1136 }
1137
1138 if (opt->quality > 0) {
1139 #if VA_CHECK_VERSION(0, 36, 0)
1140 priv->quality_params.misc.type =
1141 VAEncMiscParameterTypeQualityLevel;
1142 priv->quality_params.quality.quality_level = opt->quality;
1143
1144 ctx->global_params[ctx->nb_global_params] =
1145 &priv->quality_params.misc;
1146 ctx->global_params_size[ctx->nb_global_params++] =
1147 sizeof(priv->quality_params);
1148 #else
1149 av_log(avctx, AV_LOG_WARNING, "The encode quality option is not "
1150 "supported with this VAAPI version.\n");
1151 #endif
1152 }
1153
1154 return 0;
1155 }
1156
1157 static const VAAPIEncodeType vaapi_encode_type_h264 = {
1158 .priv_data_size = sizeof(VAAPIEncodeH264Context),
1159
1160 .configure = &vaapi_encode_h264_configure,
1161
1162 .sequence_params_size = sizeof(VAEncSequenceParameterBufferH264),
1163 .init_sequence_params = &vaapi_encode_h264_init_sequence_params,
1164
1165 .picture_params_size = sizeof(VAEncPictureParameterBufferH264),
1166 .init_picture_params = &vaapi_encode_h264_init_picture_params,
1167
1168 .slice_params_size = sizeof(VAEncSliceParameterBufferH264),
1169 .init_slice_params = &vaapi_encode_h264_init_slice_params,
1170
1171 .sequence_header_type = VAEncPackedHeaderSequence,
1172 .write_sequence_header = &vaapi_encode_h264_write_sequence_header,
1173
1174 .slice_header_type = VAEncPackedHeaderH264_Slice,
1175 .write_slice_header = &vaapi_encode_h264_write_slice_header,
1176
1177 .write_extra_header = &vaapi_encode_h264_write_extra_header,
1178 };
1179
1180 static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
1181 {
1182 VAAPIEncodeContext *ctx = avctx->priv_data;
1183 VAAPIEncodeH264Options *opt =
1184 (VAAPIEncodeH264Options*)ctx->codec_options_data;
1185
1186 ctx->codec = &vaapi_encode_type_h264;
1187
1188 switch (avctx->profile) {
1189 case FF_PROFILE_H264_CONSTRAINED_BASELINE:
1190 ctx->va_profile = VAProfileH264ConstrainedBaseline;
1191 break;
1192 case FF_PROFILE_H264_BASELINE:
1193 ctx->va_profile = VAProfileH264Baseline;
1194 break;
1195 case FF_PROFILE_H264_MAIN:
1196 ctx->va_profile = VAProfileH264Main;
1197 break;
1198 case FF_PROFILE_H264_EXTENDED:
1199 av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "
1200 "is not supported.\n");
1201 return AVERROR_PATCHWELCOME;
1202 case FF_PROFILE_UNKNOWN:
1203 case FF_PROFILE_H264_HIGH:
1204 ctx->va_profile = VAProfileH264High;
1205 break;
1206 case FF_PROFILE_H264_HIGH_10:
1207 case FF_PROFILE_H264_HIGH_10_INTRA:
1208 av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "
1209 "are not supported.\n");
1210 return AVERROR_PATCHWELCOME;
1211 case FF_PROFILE_H264_HIGH_422:
1212 case FF_PROFILE_H264_HIGH_422_INTRA:
1213 case FF_PROFILE_H264_HIGH_444:
1214 case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
1215 case FF_PROFILE_H264_HIGH_444_INTRA:
1216 case FF_PROFILE_H264_CAVLC_444:
1217 av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "
1218 "are not supported.\n");
1219 return AVERROR_PATCHWELCOME;
1220 default:
1221 av_log(avctx, AV_LOG_ERROR, "Unknown H.264 profile %d.\n",
1222 avctx->profile);
1223 return AVERROR(EINVAL);
1224 }
1225 if (opt->low_power) {
1226 #if VA_CHECK_VERSION(0, 39, 2)
1227 ctx->va_entrypoint = VAEntrypointEncSliceLP;
1228 #else
1229 av_log(avctx, AV_LOG_ERROR, "Low-power encoding is not "
1230 "supported with this VAAPI version.\n");
1231 return AVERROR(EINVAL);
1232 #endif
1233 } else {
1234 ctx->va_entrypoint = VAEntrypointEncSlice;
1235 }
1236
1237 // Only 8-bit encode is supported.
1238 ctx->va_rt_format = VA_RT_FORMAT_YUV420;
1239
1240 if (avctx->bit_rate > 0)
1241 ctx->va_rc_mode = VA_RC_CBR;
1242 else
1243 ctx->va_rc_mode = VA_RC_CQP;
1244
1245 ctx->va_packed_headers =
1246 VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.
1247 VA_ENC_PACKED_HEADER_SLICE | // Slice headers.
1248 VA_ENC_PACKED_HEADER_MISC; // SEI.
1249
1250 ctx->surface_width = FFALIGN(avctx->width, 16);
1251 ctx->surface_height = FFALIGN(avctx->height, 16);
1252
1253 return ff_vaapi_encode_init(avctx);
1254 }
1255
1256 #define OFFSET(x) (offsetof(VAAPIEncodeContext, codec_options_data) + \
1257 offsetof(VAAPIEncodeH264Options, x))
1258 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
1259 static const AVOption vaapi_encode_h264_options[] = {
1260 { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
1261 OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },
1262 { "quality", "Set encode quality (trades off against speed, higher is faster)",
1263 OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8, FLAGS },
1264 { "low_power", "Use low-power encoding mode (experimental: only supported "
1265 "on some platforms, does not support all features)",
1266 OFFSET(low_power), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
1267 { NULL },
1268 };
1269
1270 static const AVCodecDefault vaapi_encode_h264_defaults[] = {
1271 { "profile", "100" },
1272 { "level", "51" },
1273 { "b", "0" },
1274 { "bf", "2" },
1275 { "g", "120" },
1276 { "i_qfactor", "1.0" },
1277 { "i_qoffset", "0.0" },
1278 { "b_qfactor", "1.2" },
1279 { "b_qoffset", "0.0" },
1280 { NULL },
1281 };
1282
1283 static const AVClass vaapi_encode_h264_class = {
1284 .class_name = "h264_vaapi",
1285 .item_name = av_default_item_name,
1286 .option = vaapi_encode_h264_options,
1287 .version = LIBAVUTIL_VERSION_INT,
1288 };
1289
1290 AVCodec ff_h264_vaapi_encoder = {
1291 .name = "h264_vaapi",
1292 .long_name = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),
1293 .type = AVMEDIA_TYPE_VIDEO,
1294 .id = AV_CODEC_ID_H264,
1295 .priv_data_size = (sizeof(VAAPIEncodeContext) +
1296 sizeof(VAAPIEncodeH264Options)),
1297 .init = &vaapi_encode_h264_init,
1298 .encode2 = &ff_vaapi_encode2,
1299 .close = &ff_vaapi_encode_close,
1300 .priv_class = &vaapi_encode_h264_class,
1301 .capabilities = AV_CODEC_CAP_DELAY,
1302 .defaults = vaapi_encode_h264_defaults,
1303 .pix_fmts = (const enum AVPixelFormat[]) {
1304 AV_PIX_FMT_VAAPI,
1305 AV_PIX_FMT_NONE,
1306 },
1307 };