h264: drop unused H264Context.gb
[libav.git] / libavcodec / vaapi_encode_h264.c
CommitLineData
2c62fcdf
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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 "internal.h"
30#include "vaapi_encode.h"
31#include "vaapi_encode_h26x.h"
32
33enum {
34 SLICE_TYPE_P = 0,
35 SLICE_TYPE_B = 1,
36 SLICE_TYPE_I = 2,
37 SLICE_TYPE_SP = 3,
38 SLICE_TYPE_SI = 4,
39};
40
41// This structure contains all possibly-useful per-sequence syntax elements
42// which are not already contained in the various VAAPI structures.
43typedef struct VAAPIEncodeH264MiscSequenceParams {
44 unsigned int profile_idc;
45 char constraint_set0_flag;
46 char constraint_set1_flag;
47 char constraint_set2_flag;
48 char constraint_set3_flag;
49 char constraint_set4_flag;
50 char constraint_set5_flag;
51
52 char separate_colour_plane_flag;
53 char qpprime_y_zero_transform_bypass_flag;
54
55 char gaps_in_frame_num_allowed_flag;
56 char delta_pic_order_always_zero_flag;
57 char bottom_field_pic_order_in_frame_present_flag;
58
59 unsigned int num_slice_groups_minus1;
60 unsigned int slice_group_map_type;
61
62 int pic_init_qs_minus26;
63
64 char vui_parameters_present_flag;
65} VAAPIEncodeH264MiscSequenceParams;
66
67// This structure contains all possibly-useful per-slice syntax elements
68// which are not already contained in the various VAAPI structures.
69typedef struct VAAPIEncodeH264MiscSliceParams {
70 unsigned int nal_unit_type;
71 unsigned int nal_ref_idc;
72
73 unsigned int colour_plane_id;
74 char field_pic_flag;
75 char bottom_field_flag;
76
77 unsigned int redundant_pic_cnt;
78
79 char sp_for_switch_flag;
80 int slice_qs_delta;
81
82 char ref_pic_list_modification_flag_l0;
83 char ref_pic_list_modification_flag_l1;
84
85 char no_output_of_prior_pics_flag;
86 char long_term_reference_flag;
87 char adaptive_ref_pic_marking_mode_flag;
88} VAAPIEncodeH264MiscSliceParams;
89
90typedef struct VAAPIEncodeH264Slice {
91 VAAPIEncodeH264MiscSliceParams misc_slice_params;
92} VAAPIEncodeH264Slice;
93
94typedef struct VAAPIEncodeH264Context {
95 VAAPIEncodeH264MiscSequenceParams misc_sequence_params;
96
97 int mb_width;
98 int mb_height;
99
100 int fixed_qp_idr;
101 int fixed_qp_p;
102 int fixed_qp_b;
103
b51c7c6b 104 int next_frame_num;
2c62fcdf 105 int64_t idr_pic_count;
2c62fcdf 106
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107 // Rate control configuration.
108 struct {
109 VAEncMiscParameterBuffer misc;
110 VAEncMiscParameterRateControl rc;
111 } rc_params;
112 struct {
113 VAEncMiscParameterBuffer misc;
114 VAEncMiscParameterHRD hrd;
115 } hrd_params;
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116
117#if VA_CHECK_VERSION(0, 36, 0)
118 // Speed-quality tradeoff setting.
119 struct {
120 VAEncMiscParameterBuffer misc;
121 VAEncMiscParameterBufferQualityLevel quality;
122 } quality_params;
123#endif
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124} VAAPIEncodeH264Context;
125
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126typedef struct VAAPIEncodeH264Options {
127 int qp;
fcf536b1 128 int quality;
a86aa160 129 int low_power;
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130} VAAPIEncodeH264Options;
131
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132
133#define vseq_var(name) vseq->name, name
134#define vseq_field(name) vseq->seq_fields.bits.name, name
135#define vpic_var(name) vpic->name, name
136#define vpic_field(name) vpic->pic_fields.bits.name, name
137#define vslice_var(name) vslice->name, name
138#define vslice_field(name) vslice->slice_fields.bits.name, name
139#define mseq_var(name) mseq->name, name
140#define mslice_var(name) mslice->name, name
141
142static void vaapi_encode_h264_write_nal_header(PutBitContext *pbc,
143 int nal_unit_type, int nal_ref_idc)
144{
145 u(1, 0, forbidden_zero_bit);
146 u(2, nal_ref_idc, nal_ref_idc);
147 u(5, nal_unit_type, nal_unit_type);
148}
149
150static void vaapi_encode_h264_write_trailing_rbsp(PutBitContext *pbc)
151{
152 u(1, 1, rbsp_stop_one_bit);
153 while (put_bits_count(pbc) & 7)
154 u(1, 0, rbsp_alignment_zero_bit);
155}
156
157static void vaapi_encode_h264_write_sps(PutBitContext *pbc,
158 VAAPIEncodeContext *ctx)
159{
160 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
161 VAAPIEncodeH264Context *priv = ctx->priv_data;
162 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
163 int i;
164
165 vaapi_encode_h264_write_nal_header(pbc, NAL_SPS, 3);
166
167 u(8, mseq_var(profile_idc));
168 u(1, mseq_var(constraint_set0_flag));
169 u(1, mseq_var(constraint_set1_flag));
170 u(1, mseq_var(constraint_set2_flag));
171 u(1, mseq_var(constraint_set3_flag));
172 u(1, mseq_var(constraint_set4_flag));
173 u(1, mseq_var(constraint_set5_flag));
174 u(2, 0, reserved_zero_2bits);
175
176 u(8, vseq_var(level_idc));
177
178 ue(vseq_var(seq_parameter_set_id));
179
180 if (mseq->profile_idc == 100 || mseq->profile_idc == 110 ||
181 mseq->profile_idc == 122 || mseq->profile_idc == 244 ||
182 mseq->profile_idc == 44 || mseq->profile_idc == 83 ||
183 mseq->profile_idc == 86 || mseq->profile_idc == 118 ||
184 mseq->profile_idc == 128 || mseq->profile_idc == 138) {
185 ue(vseq_field(chroma_format_idc));
186
187 if (vseq->seq_fields.bits.chroma_format_idc == 3)
188 u(1, mseq_var(separate_colour_plane_flag));
189
190 ue(vseq_var(bit_depth_luma_minus8));
191 ue(vseq_var(bit_depth_chroma_minus8));
192
193 u(1, mseq_var(qpprime_y_zero_transform_bypass_flag));
194
195 u(1, vseq_field(seq_scaling_matrix_present_flag));
196 if (vseq->seq_fields.bits.seq_scaling_matrix_present_flag) {
197 av_assert0(0 && "scaling matrices not supported");
198 }
199 }
200
201 ue(vseq_field(log2_max_frame_num_minus4));
202 ue(vseq_field(pic_order_cnt_type));
203
204 if (vseq->seq_fields.bits.pic_order_cnt_type == 0) {
205 ue(vseq_field(log2_max_pic_order_cnt_lsb_minus4));
206 } else if (vseq->seq_fields.bits.pic_order_cnt_type == 1) {
207 u(1, mseq_var(delta_pic_order_always_zero_flag));
208 se(vseq_var(offset_for_non_ref_pic));
209 se(vseq_var(offset_for_top_to_bottom_field));
210 ue(vseq_var(num_ref_frames_in_pic_order_cnt_cycle));
211
212 for (i = 0; i < vseq->num_ref_frames_in_pic_order_cnt_cycle; i++)
213 se(vseq_var(offset_for_ref_frame[i]));
214 }
215
216 ue(vseq_var(max_num_ref_frames));
217 u(1, mseq_var(gaps_in_frame_num_allowed_flag));
218
219 ue(vseq->picture_width_in_mbs - 1, pic_width_in_mbs_minus1);
220 ue(vseq->picture_height_in_mbs - 1, pic_height_in_mbs_minus1);
221
222 u(1, vseq_field(frame_mbs_only_flag));
223 if (!vseq->seq_fields.bits.frame_mbs_only_flag)
224 u(1, vseq_field(mb_adaptive_frame_field_flag));
225
226 u(1, vseq_field(direct_8x8_inference_flag));
227
228 u(1, vseq_var(frame_cropping_flag));
229 if (vseq->frame_cropping_flag) {
230 ue(vseq_var(frame_crop_left_offset));
231 ue(vseq_var(frame_crop_right_offset));
232 ue(vseq_var(frame_crop_top_offset));
233 ue(vseq_var(frame_crop_bottom_offset));
234 }
235
236 u(1, mseq_var(vui_parameters_present_flag));
237
238 vaapi_encode_h264_write_trailing_rbsp(pbc);
239}
240
241static void vaapi_encode_h264_write_pps(PutBitContext *pbc,
242 VAAPIEncodeContext *ctx)
243{
244 VAEncPictureParameterBufferH264 *vpic = ctx->codec_picture_params;
245 VAAPIEncodeH264Context *priv = ctx->priv_data;
246 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
247
248 vaapi_encode_h264_write_nal_header(pbc, NAL_PPS, 3);
249
250 ue(vpic_var(pic_parameter_set_id));
251 ue(vpic_var(seq_parameter_set_id));
252
253 u(1, vpic_field(entropy_coding_mode_flag));
254 u(1, mseq_var(bottom_field_pic_order_in_frame_present_flag));
255
256 ue(mseq_var(num_slice_groups_minus1));
257 if (mseq->num_slice_groups_minus1 > 0) {
258 ue(mseq_var(slice_group_map_type));
259 av_assert0(0 && "slice groups not supported");
260 }
261
262 ue(vpic_var(num_ref_idx_l0_active_minus1));
263 ue(vpic_var(num_ref_idx_l1_active_minus1));
264
265 u(1, vpic_field(weighted_pred_flag));
266 u(2, vpic_field(weighted_bipred_idc));
267
268 se(vpic->pic_init_qp - 26, pic_init_qp_minus26);
269 se(mseq_var(pic_init_qs_minus26));
270 se(vpic_var(chroma_qp_index_offset));
271
272 u(1, vpic_field(deblocking_filter_control_present_flag));
273 u(1, vpic_field(constrained_intra_pred_flag));
274 u(1, vpic_field(redundant_pic_cnt_present_flag));
275 u(1, vpic_field(transform_8x8_mode_flag));
276
277 u(1, vpic_field(pic_scaling_matrix_present_flag));
278 if (vpic->pic_fields.bits.pic_scaling_matrix_present_flag) {
279 av_assert0(0 && "scaling matrices not supported");
280 }
281
282 se(vpic_var(second_chroma_qp_index_offset));
283
284 vaapi_encode_h264_write_trailing_rbsp(pbc);
285}
286
287static void vaapi_encode_h264_write_slice_header2(PutBitContext *pbc,
288 VAAPIEncodeContext *ctx,
289 VAAPIEncodePicture *pic,
290 VAAPIEncodeSlice *slice)
291{
292 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
293 VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
294 VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
295 VAAPIEncodeH264Context *priv = ctx->priv_data;
296 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
297 VAAPIEncodeH264Slice *pslice = slice->priv_data;
298 VAAPIEncodeH264MiscSliceParams *mslice = &pslice->misc_slice_params;
299
300 vaapi_encode_h264_write_nal_header(pbc, mslice->nal_unit_type,
301 mslice->nal_ref_idc);
302
303 ue(vslice->macroblock_address, first_mb_in_slice);
304 ue(vslice_var(slice_type));
305 ue(vpic_var(pic_parameter_set_id));
306
307 if (mseq->separate_colour_plane_flag) {
308 u(2, mslice_var(colour_plane_id));
309 }
310
311 u(4 + vseq->seq_fields.bits.log2_max_frame_num_minus4,
312 (vpic->frame_num &
313 ((1 << (4 + vseq->seq_fields.bits.log2_max_frame_num_minus4)) - 1)),
314 frame_num);
315
316 if (!vseq->seq_fields.bits.frame_mbs_only_flag) {
317 u(1, mslice_var(field_pic_flag));
318 if (mslice->field_pic_flag)
319 u(1, mslice_var(bottom_field_flag));
320 }
321
322 if (vpic->pic_fields.bits.idr_pic_flag) {
323 ue(vslice_var(idr_pic_id));
324 }
325
326 if (vseq->seq_fields.bits.pic_order_cnt_type == 0) {
327 u(4 + vseq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4,
328 vslice_var(pic_order_cnt_lsb));
329 if (mseq->bottom_field_pic_order_in_frame_present_flag &&
330 !mslice->field_pic_flag) {
331 se(vslice_var(delta_pic_order_cnt_bottom));
332 }
333 }
334
335 if (vseq->seq_fields.bits.pic_order_cnt_type == 1 &&
336 !vseq->seq_fields.bits.delta_pic_order_always_zero_flag) {
337 se(vslice_var(delta_pic_order_cnt[0]));
338 if (mseq->bottom_field_pic_order_in_frame_present_flag &&
339 !mslice->field_pic_flag) {
340 se(vslice_var(delta_pic_order_cnt[1]));
341 }
342 }
343
344 if (vpic->pic_fields.bits.redundant_pic_cnt_present_flag) {
345 ue(mslice_var(redundant_pic_cnt));
346 }
347
348 if (vslice->slice_type == SLICE_TYPE_B) {
349 u(1, vslice_var(direct_spatial_mv_pred_flag));
350 }
351
352 if (vslice->slice_type == SLICE_TYPE_P ||
353 vslice->slice_type == SLICE_TYPE_SP ||
354 vslice->slice_type == SLICE_TYPE_B) {
355 u(1, vslice_var(num_ref_idx_active_override_flag));
356 if (vslice->num_ref_idx_active_override_flag) {
357 ue(vslice_var(num_ref_idx_l0_active_minus1));
358 if (vslice->slice_type == SLICE_TYPE_B)
359 ue(vslice_var(num_ref_idx_l1_active_minus1));
360 }
361 }
362
363 if (mslice->nal_unit_type == 20 || mslice->nal_unit_type == 21) {
364 av_assert0(0 && "no MVC support");
365 } else {
366 if (vslice->slice_type % 5 != 2 && vslice->slice_type % 5 != 4) {
367 u(1, mslice_var(ref_pic_list_modification_flag_l0));
368 if (mslice->ref_pic_list_modification_flag_l0) {
369 av_assert0(0 && "ref pic list modification");
370 }
371 }
372 if (vslice->slice_type % 5 == 1) {
373 u(1, mslice_var(ref_pic_list_modification_flag_l1));
374 if (mslice->ref_pic_list_modification_flag_l1) {
375 av_assert0(0 && "ref pic list modification");
376 }
377 }
378 }
379
380 if ((vpic->pic_fields.bits.weighted_pred_flag &&
381 (vslice->slice_type == SLICE_TYPE_P ||
382 vslice->slice_type == SLICE_TYPE_SP)) ||
383 (vpic->pic_fields.bits.weighted_bipred_idc == 1 &&
384 vslice->slice_type == SLICE_TYPE_B)) {
385 av_assert0(0 && "prediction weights not supported");
386 }
387
388 av_assert0(mslice->nal_ref_idc > 0 ==
389 vpic->pic_fields.bits.reference_pic_flag);
390 if (mslice->nal_ref_idc != 0) {
391 if (vpic->pic_fields.bits.idr_pic_flag) {
392 u(1, mslice_var(no_output_of_prior_pics_flag));
393 u(1, mslice_var(long_term_reference_flag));
394 } else {
395 u(1, mslice_var(adaptive_ref_pic_marking_mode_flag));
396 if (mslice->adaptive_ref_pic_marking_mode_flag) {
397 av_assert0(0 && "MMCOs not supported");
398 }
399 }
400 }
401
402 if (vpic->pic_fields.bits.entropy_coding_mode_flag &&
403 vslice->slice_type != SLICE_TYPE_I &&
404 vslice->slice_type != SLICE_TYPE_SI) {
405 ue(vslice_var(cabac_init_idc));
406 }
407
408 se(vslice_var(slice_qp_delta));
409 if (vslice->slice_type == SLICE_TYPE_SP ||
410 vslice->slice_type == SLICE_TYPE_SI) {
411 if (vslice->slice_type == SLICE_TYPE_SP)
412 u(1, mslice_var(sp_for_switch_flag));
413 se(mslice_var(slice_qs_delta));
414 }
415
416 if (vpic->pic_fields.bits.deblocking_filter_control_present_flag) {
417 ue(vslice_var(disable_deblocking_filter_idc));
418 if (vslice->disable_deblocking_filter_idc != 1) {
419 se(vslice_var(slice_alpha_c0_offset_div2));
420 se(vslice_var(slice_beta_offset_div2));
421 }
422 }
423
424 if (mseq->num_slice_groups_minus1 > 0 &&
425 mseq->slice_group_map_type >= 3 && mseq->slice_group_map_type <= 5) {
426 av_assert0(0 && "slice groups not supported");
427 }
428
429 // No alignment - this need not be a byte boundary.
430}
431
432static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,
433 char *data, size_t *data_len)
434{
435 VAAPIEncodeContext *ctx = avctx->priv_data;
436 PutBitContext pbc;
437 char tmp[256];
438 int err;
439 size_t nal_len, bit_len, bit_pos, next_len;
440
441 bit_len = *data_len;
442 bit_pos = 0;
443
444 init_put_bits(&pbc, tmp, sizeof(tmp));
445 vaapi_encode_h264_write_sps(&pbc, ctx);
446 nal_len = put_bits_count(&pbc);
447 flush_put_bits(&pbc);
448
449 next_len = bit_len - bit_pos;
450 err = ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data + bit_pos / 8,
451 &next_len,
452 tmp, nal_len);
453 if (err < 0)
454 return err;
455 bit_pos += next_len;
456
457 init_put_bits(&pbc, tmp, sizeof(tmp));
458 vaapi_encode_h264_write_pps(&pbc, ctx);
459 nal_len = put_bits_count(&pbc);
460 flush_put_bits(&pbc);
461
462 next_len = bit_len - bit_pos;
463 err = ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data + bit_pos / 8,
464 &next_len,
465 tmp, nal_len);
466 if (err < 0)
467 return err;
468 bit_pos += next_len;
469
470 *data_len = bit_pos;
471 return 0;
472}
473
474static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,
475 VAAPIEncodePicture *pic,
476 VAAPIEncodeSlice *slice,
477 char *data, size_t *data_len)
478{
479 VAAPIEncodeContext *ctx = avctx->priv_data;
480 PutBitContext pbc;
481 char tmp[256];
482 size_t header_len;
483
484 init_put_bits(&pbc, tmp, sizeof(tmp));
485 vaapi_encode_h264_write_slice_header2(&pbc, ctx, pic, slice);
486 header_len = put_bits_count(&pbc);
487 flush_put_bits(&pbc);
488
489 return ff_vaapi_encode_h26x_nal_unit_to_byte_stream(data, data_len,
490 tmp, header_len);
491}
492
493static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
494{
495 VAAPIEncodeContext *ctx = avctx->priv_data;
496 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
497 VAEncPictureParameterBufferH264 *vpic = ctx->codec_picture_params;
498 VAAPIEncodeH264Context *priv = ctx->priv_data;
499 VAAPIEncodeH264MiscSequenceParams *mseq = &priv->misc_sequence_params;
500 int i;
501
502 {
503 vseq->seq_parameter_set_id = 0;
504
505 vseq->level_idc = avctx->level;
506
507 vseq->max_num_ref_frames = 2;
508
509 vseq->picture_width_in_mbs = priv->mb_width;
510 vseq->picture_height_in_mbs = priv->mb_height;
511
512 vseq->seq_fields.bits.chroma_format_idc = 1;
513 vseq->seq_fields.bits.frame_mbs_only_flag = 1;
514 vseq->seq_fields.bits.direct_8x8_inference_flag = 1;
515 vseq->seq_fields.bits.log2_max_frame_num_minus4 = 4;
516 vseq->seq_fields.bits.pic_order_cnt_type = 0;
517
518 if (ctx->input_width != ctx->aligned_width ||
519 ctx->input_height != ctx->aligned_height) {
520 vseq->frame_cropping_flag = 1;
521
522 vseq->frame_crop_left_offset = 0;
523 vseq->frame_crop_right_offset =
524 (ctx->aligned_width - ctx->input_width) / 2;
525 vseq->frame_crop_top_offset = 0;
526 vseq->frame_crop_bottom_offset =
527 (ctx->aligned_height - ctx->input_height) / 2;
528 } else {
529 vseq->frame_cropping_flag = 0;
530 }
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531
532 vseq->bits_per_second = avctx->bit_rate;
533 if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
534 vseq->num_units_in_tick = avctx->framerate.num;
535 vseq->time_scale = 2 * avctx->framerate.den;
536 } else {
537 vseq->num_units_in_tick = avctx->time_base.num;
538 vseq->time_scale = 2 * avctx->time_base.den;
539 }
540
541 vseq->intra_period = ctx->p_per_i * (ctx->b_per_p + 1);
542 vseq->intra_idr_period = vseq->intra_period;
543 vseq->ip_period = ctx->b_per_p + 1;
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544 }
545
546 {
547 vpic->CurrPic.picture_id = VA_INVALID_ID;
548 vpic->CurrPic.flags = VA_PICTURE_H264_INVALID;
549
550 for (i = 0; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
551 vpic->ReferenceFrames[i].picture_id = VA_INVALID_ID;
552 vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
553 }
554
555 vpic->coded_buf = VA_INVALID_ID;
556
557 vpic->pic_parameter_set_id = 0;
558 vpic->seq_parameter_set_id = 0;
559
560 vpic->num_ref_idx_l0_active_minus1 = 0;
561 vpic->num_ref_idx_l1_active_minus1 = 0;
562
563 vpic->pic_fields.bits.entropy_coding_mode_flag =
564 ((avctx->profile & 0xff) != 66);
565 vpic->pic_fields.bits.weighted_pred_flag = 0;
566 vpic->pic_fields.bits.weighted_bipred_idc = 0;
567 vpic->pic_fields.bits.transform_8x8_mode_flag =
568 ((avctx->profile & 0xff) >= 100);
569
570 vpic->pic_init_qp = priv->fixed_qp_idr;
571 }
572
573 {
574 mseq->profile_idc = avctx->profile & 0xff;
575
576 if (avctx->profile & FF_PROFILE_H264_CONSTRAINED)
577 mseq->constraint_set1_flag = 1;
578 if (avctx->profile & FF_PROFILE_H264_INTRA)
579 mseq->constraint_set3_flag = 1;
580 }
581
582 return 0;
583}
584
585static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
586 VAAPIEncodePicture *pic)
587{
588 VAAPIEncodeContext *ctx = avctx->priv_data;
589 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
590 VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
591 VAAPIEncodeH264Context *priv = ctx->priv_data;
592 int i;
593
594 if (pic->type == PICTURE_TYPE_IDR) {
595 av_assert0(pic->display_order == pic->encode_order);
b51c7c6b
MT
596 vpic->frame_num = 0;
597 priv->next_frame_num = 1;
2c62fcdf 598 } else {
b51c7c6b
MT
599 vpic->frame_num = priv->next_frame_num;
600 if (pic->type != PICTURE_TYPE_B) {
601 // nal_ref_idc != 0
602 ++priv->next_frame_num;
603 }
2c62fcdf
MT
604 }
605
b51c7c6b 606 vpic->frame_num = vpic->frame_num &
2c62fcdf
MT
607 ((1 << (4 + vseq->seq_fields.bits.log2_max_frame_num_minus4)) - 1);
608
609 vpic->CurrPic.picture_id = pic->recon_surface;
610 vpic->CurrPic.frame_idx = vpic->frame_num;
611 vpic->CurrPic.flags = 0;
612 vpic->CurrPic.TopFieldOrderCnt = pic->display_order;
613 vpic->CurrPic.BottomFieldOrderCnt = pic->display_order;
614
615 for (i = 0; i < pic->nb_refs; i++) {
616 VAAPIEncodePicture *ref = pic->refs[i];
b51c7c6b 617 av_assert0(ref && ref->encode_order < pic->encode_order);
2c62fcdf 618 vpic->ReferenceFrames[i].picture_id = ref->recon_surface;
b51c7c6b 619 vpic->ReferenceFrames[i].frame_idx = ref->encode_order;
2c62fcdf
MT
620 vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_SHORT_TERM_REFERENCE;
621 vpic->ReferenceFrames[i].TopFieldOrderCnt = ref->display_order;
622 vpic->ReferenceFrames[i].BottomFieldOrderCnt = ref->display_order;
623 }
624 for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
625 vpic->ReferenceFrames[i].picture_id = VA_INVALID_ID;
626 vpic->ReferenceFrames[i].flags = VA_PICTURE_H264_INVALID;
627 }
628
629 vpic->coded_buf = pic->output_buffer;
630
631 vpic->pic_fields.bits.idr_pic_flag = (pic->type == PICTURE_TYPE_IDR);
632 vpic->pic_fields.bits.reference_pic_flag = (pic->type != PICTURE_TYPE_B);
633
634 pic->nb_slices = 1;
635
636 return 0;
637}
638
639static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,
640 VAAPIEncodePicture *pic,
641 VAAPIEncodeSlice *slice)
642{
643 VAAPIEncodeContext *ctx = avctx->priv_data;
644 VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
645 VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
646 VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
647 VAAPIEncodeH264Context *priv = ctx->priv_data;
648 VAAPIEncodeH264Slice *pslice;
649 VAAPIEncodeH264MiscSliceParams *mslice;
650 int i;
651
652 slice->priv_data = av_mallocz(sizeof(*pslice));
653 if (!slice->priv_data)
654 return AVERROR(ENOMEM);
655 pslice = slice->priv_data;
656 mslice = &pslice->misc_slice_params;
657
658 if (pic->type == PICTURE_TYPE_IDR)
659 mslice->nal_unit_type = NAL_IDR_SLICE;
660 else
661 mslice->nal_unit_type = NAL_SLICE;
662
663 switch (pic->type) {
664 case PICTURE_TYPE_IDR:
665 vslice->slice_type = SLICE_TYPE_I;
666 mslice->nal_ref_idc = 3;
667 break;
668 case PICTURE_TYPE_I:
669 vslice->slice_type = SLICE_TYPE_I;
670 mslice->nal_ref_idc = 2;
671 break;
672 case PICTURE_TYPE_P:
673 vslice->slice_type = SLICE_TYPE_P;
674 mslice->nal_ref_idc = 1;
675 break;
676 case PICTURE_TYPE_B:
677 vslice->slice_type = SLICE_TYPE_B;
678 mslice->nal_ref_idc = 0;
679 break;
680 default:
681 av_assert0(0 && "invalid picture type");
682 }
683
684 // Only one slice per frame.
685 vslice->macroblock_address = 0;
686 vslice->num_macroblocks = priv->mb_width * priv->mb_height;
687
688 vslice->macroblock_info = VA_INVALID_ID;
689
690 vslice->pic_parameter_set_id = vpic->pic_parameter_set_id;
691 vslice->idr_pic_id = priv->idr_pic_count++;
692
693 vslice->pic_order_cnt_lsb = pic->display_order &
694 ((1 << (4 + vseq->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4)) - 1);
695
696 for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {
697 vslice->RefPicList0[i].picture_id = VA_INVALID_ID;
698 vslice->RefPicList0[i].flags = VA_PICTURE_H264_INVALID;
699 vslice->RefPicList1[i].picture_id = VA_INVALID_ID;
700 vslice->RefPicList1[i].flags = VA_PICTURE_H264_INVALID;
701 }
702
703 av_assert0(pic->nb_refs <= 2);
704 if (pic->nb_refs >= 1) {
41ed7ab4 705 // Backward reference for P- or B-frame.
2c62fcdf
MT
706 av_assert0(pic->type == PICTURE_TYPE_P ||
707 pic->type == PICTURE_TYPE_B);
708
709 vslice->num_ref_idx_l0_active_minus1 = 0;
710 vslice->RefPicList0[0] = vpic->ReferenceFrames[0];
711 }
712 if (pic->nb_refs >= 2) {
41ed7ab4 713 // Forward reference for B-frame.
2c62fcdf
MT
714 av_assert0(pic->type == PICTURE_TYPE_B);
715
716 vslice->num_ref_idx_l1_active_minus1 = 0;
717 vslice->RefPicList1[0] = vpic->ReferenceFrames[1];
718 }
719
720 if (pic->type == PICTURE_TYPE_B)
721 vslice->slice_qp_delta = priv->fixed_qp_b - vpic->pic_init_qp;
722 else if (pic->type == PICTURE_TYPE_P)
723 vslice->slice_qp_delta = priv->fixed_qp_p - vpic->pic_init_qp;
724 else
725 vslice->slice_qp_delta = priv->fixed_qp_idr - vpic->pic_init_qp;
726
727 vslice->direct_spatial_mv_pred_flag = 1;
728
729 return 0;
730}
731
6e8f66fc
MT
732static av_cold int vaapi_encode_h264_init_constant_bitrate(AVCodecContext *avctx)
733{
734 VAAPIEncodeContext *ctx = avctx->priv_data;
735 VAAPIEncodeH264Context *priv = ctx->priv_data;
736 int hrd_buffer_size;
737 int hrd_initial_buffer_fullness;
738
739 if (avctx->rc_buffer_size)
740 hrd_buffer_size = avctx->rc_buffer_size;
741 else
742 hrd_buffer_size = avctx->bit_rate;
743 if (avctx->rc_initial_buffer_occupancy)
744 hrd_initial_buffer_fullness = avctx->rc_initial_buffer_occupancy;
745 else
746 hrd_initial_buffer_fullness = hrd_buffer_size * 3 / 4;
747
748 priv->rc_params.misc.type = VAEncMiscParameterTypeRateControl;
749 priv->rc_params.rc = (VAEncMiscParameterRateControl) {
750 .bits_per_second = avctx->bit_rate,
751 .target_percentage = 66,
752 .window_size = 1000,
753 .initial_qp = (avctx->qmax >= 0 ? avctx->qmax : 40),
754 .min_qp = (avctx->qmin >= 0 ? avctx->qmin : 18),
755 .basic_unit_size = 0,
756 };
757 ctx->global_params[ctx->nb_global_params] =
758 &priv->rc_params.misc;
759 ctx->global_params_size[ctx->nb_global_params++] =
760 sizeof(priv->rc_params);
761
762 priv->hrd_params.misc.type = VAEncMiscParameterTypeHRD;
763 priv->hrd_params.hrd = (VAEncMiscParameterHRD) {
764 .initial_buffer_fullness = hrd_initial_buffer_fullness,
765 .buffer_size = hrd_buffer_size,
766 };
767 ctx->global_params[ctx->nb_global_params] =
768 &priv->hrd_params.misc;
769 ctx->global_params_size[ctx->nb_global_params++] =
770 sizeof(priv->hrd_params);
771
772 // These still need to be set for pic_init_qp/slice_qp_delta.
773 priv->fixed_qp_idr = 26;
774 priv->fixed_qp_p = 26;
775 priv->fixed_qp_b = 26;
776
777 av_log(avctx, AV_LOG_DEBUG, "Using constant-bitrate = %d bps.\n",
778 avctx->bit_rate);
779 return 0;
780}
781
782static av_cold int vaapi_encode_h264_init_fixed_qp(AVCodecContext *avctx)
783{
784 VAAPIEncodeContext *ctx = avctx->priv_data;
785 VAAPIEncodeH264Context *priv = ctx->priv_data;
9629701c 786 VAAPIEncodeH264Options *opt = ctx->codec_options;
6e8f66fc 787
9629701c 788 priv->fixed_qp_p = opt->qp;
6e8f66fc
MT
789 if (avctx->i_quant_factor > 0.0)
790 priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +
791 avctx->i_quant_offset) + 0.5);
792 else
793 priv->fixed_qp_idr = priv->fixed_qp_p;
794 if (avctx->b_quant_factor > 0.0)
795 priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +
796 avctx->b_quant_offset) + 0.5);
797 else
798 priv->fixed_qp_b = priv->fixed_qp_p;
799
800 av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
41ed7ab4 801 "%d / %d / %d for IDR- / P- / B-frames.\n",
6e8f66fc
MT
802 priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
803 return 0;
804}
805
2c62fcdf
MT
806static av_cold int vaapi_encode_h264_init_internal(AVCodecContext *avctx)
807{
f6b85523
MT
808 static const VAConfigAttrib default_config_attributes[] = {
809 { .type = VAConfigAttribRTFormat,
810 .value = VA_RT_FORMAT_YUV420 },
f6b85523
MT
811 { .type = VAConfigAttribEncPackedHeaders,
812 .value = (VA_ENC_PACKED_HEADER_SEQUENCE |
813 VA_ENC_PACKED_HEADER_SLICE) },
814 };
815
2c62fcdf
MT
816 VAAPIEncodeContext *ctx = avctx->priv_data;
817 VAAPIEncodeH264Context *priv = ctx->priv_data;
fcf536b1 818 VAAPIEncodeH264Options *opt = ctx->codec_options;
6e8f66fc 819 int i, err;
2c62fcdf
MT
820
821 switch (avctx->profile) {
822 case FF_PROFILE_H264_CONSTRAINED_BASELINE:
823 ctx->va_profile = VAProfileH264ConstrainedBaseline;
824 break;
825 case FF_PROFILE_H264_BASELINE:
826 ctx->va_profile = VAProfileH264Baseline;
827 break;
828 case FF_PROFILE_H264_MAIN:
829 ctx->va_profile = VAProfileH264Main;
830 break;
831 case FF_PROFILE_H264_EXTENDED:
832 av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "
833 "is not supported.\n");
834 return AVERROR_PATCHWELCOME;
835 case FF_PROFILE_UNKNOWN:
836 case FF_PROFILE_H264_HIGH:
837 ctx->va_profile = VAProfileH264High;
838 break;
839 case FF_PROFILE_H264_HIGH_10:
840 case FF_PROFILE_H264_HIGH_10_INTRA:
841 av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "
842 "are not supported.\n");
843 return AVERROR_PATCHWELCOME;
844 case FF_PROFILE_H264_HIGH_422:
845 case FF_PROFILE_H264_HIGH_422_INTRA:
846 case FF_PROFILE_H264_HIGH_444:
847 case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
848 case FF_PROFILE_H264_HIGH_444_INTRA:
849 case FF_PROFILE_H264_CAVLC_444:
850 av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "
851 "are not supported.\n");
852 return AVERROR_PATCHWELCOME;
853 default:
854 av_log(avctx, AV_LOG_ERROR, "Unknown H.264 profile %d.\n",
855 avctx->profile);
856 return AVERROR(EINVAL);
857 }
a86aa160
MT
858 if (opt->low_power) {
859#if VA_CHECK_VERSION(0, 39, 1)
860 ctx->va_entrypoint = VAEntrypointEncSliceLP;
861#else
862 av_log(avctx, AV_LOG_ERROR, "Low-power encoding is not "
863 "supported with this VAAPI version.\n");
864 return AVERROR(EINVAL);
865#endif
866 } else {
867 ctx->va_entrypoint = VAEntrypointEncSlice;
868 }
2c62fcdf 869
2c62fcdf
MT
870 ctx->input_width = avctx->width;
871 ctx->input_height = avctx->height;
872 ctx->aligned_width = FFALIGN(ctx->input_width, 16);
873 ctx->aligned_height = FFALIGN(ctx->input_height, 16);
874 priv->mb_width = ctx->aligned_width / 16;
875 priv->mb_height = ctx->aligned_height / 16;
876
f6b85523
MT
877 for (i = 0; i < FF_ARRAY_ELEMS(default_config_attributes); i++) {
878 ctx->config_attributes[ctx->nb_config_attributes++] =
879 default_config_attributes[i];
880 }
881
6e8f66fc
MT
882 if (avctx->bit_rate > 0) {
883 ctx->va_rc_mode = VA_RC_CBR;
884 err = vaapi_encode_h264_init_constant_bitrate(avctx);
885 } else {
886 ctx->va_rc_mode = VA_RC_CQP;
887 err = vaapi_encode_h264_init_fixed_qp(avctx);
888 }
889 if (err < 0)
890 return err;
891
892 ctx->config_attributes[ctx->nb_config_attributes++] = (VAConfigAttrib) {
893 .type = VAConfigAttribRateControl,
894 .value = ctx->va_rc_mode,
895 };
2c62fcdf 896
fcf536b1
MT
897 if (opt->quality > 0) {
898#if VA_CHECK_VERSION(0, 36, 0)
899 priv->quality_params.misc.type =
900 VAEncMiscParameterTypeQualityLevel;
901 priv->quality_params.quality.quality_level = opt->quality;
902
903 ctx->global_params[ctx->nb_global_params] =
904 &priv->quality_params.misc;
905 ctx->global_params_size[ctx->nb_global_params++] =
906 sizeof(priv->quality_params);
907#else
908 av_log(avctx, AV_LOG_WARNING, "The encode quality option is not "
909 "supported with this VAAPI version.\n");
910#endif
911 }
912
2c62fcdf
MT
913 ctx->nb_recon_frames = 20;
914
915 return 0;
916}
917
918static VAAPIEncodeType vaapi_encode_type_h264 = {
919 .priv_data_size = sizeof(VAAPIEncodeH264Context),
920
921 .init = &vaapi_encode_h264_init_internal,
922
923 .sequence_params_size = sizeof(VAEncSequenceParameterBufferH264),
924 .init_sequence_params = &vaapi_encode_h264_init_sequence_params,
925
926 .picture_params_size = sizeof(VAEncPictureParameterBufferH264),
927 .init_picture_params = &vaapi_encode_h264_init_picture_params,
928
929 .slice_params_size = sizeof(VAEncSliceParameterBufferH264),
930 .init_slice_params = &vaapi_encode_h264_init_slice_params,
931
932 .sequence_header_type = VAEncPackedHeaderSequence,
933 .write_sequence_header = &vaapi_encode_h264_write_sequence_header,
934
935 .slice_header_type = VAEncPackedHeaderH264_Slice,
936 .write_slice_header = &vaapi_encode_h264_write_slice_header,
937};
938
939static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
940{
941 return ff_vaapi_encode_init(avctx, &vaapi_encode_type_h264);
942}
943
9629701c
MT
944#define OFFSET(x) (offsetof(VAAPIEncodeContext, codec_options_data) + \
945 offsetof(VAAPIEncodeH264Options, x))
946#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
947static const AVOption vaapi_encode_h264_options[] = {
41ed7ab4 948 { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
9629701c 949 OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },
fcf536b1 950 { "quality", "Set encode quality (trades off against speed, higher is faster)",
a86aa160
MT
951 OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8, FLAGS },
952 { "low_power", "Use low-power encoding mode (experimental: only supported "
953 "on some platforms, does not support all features)",
954 OFFSET(low_power), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
9629701c
MT
955 { NULL },
956};
957
2c62fcdf
MT
958static const AVCodecDefault vaapi_encode_h264_defaults[] = {
959 { "profile", "100" },
960 { "level", "51" },
961 { "b", "0" },
962 { "bf", "2" },
963 { "g", "120" },
2c62fcdf
MT
964 { "i_qfactor", "1.0" },
965 { "i_qoffset", "0.0" },
966 { "b_qfactor", "1.2" },
967 { "b_qoffset", "0.0" },
968 { NULL },
969};
970
971static const AVClass vaapi_encode_h264_class = {
972 .class_name = "h264_vaapi",
973 .item_name = av_default_item_name,
9629701c 974 .option = vaapi_encode_h264_options,
2c62fcdf
MT
975 .version = LIBAVUTIL_VERSION_INT,
976};
977
978AVCodec ff_h264_vaapi_encoder = {
979 .name = "h264_vaapi",
980 .long_name = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),
981 .type = AVMEDIA_TYPE_VIDEO,
982 .id = AV_CODEC_ID_H264,
9629701c
MT
983 .priv_data_size = (sizeof(VAAPIEncodeContext) +
984 sizeof(VAAPIEncodeH264Options)),
2c62fcdf
MT
985 .init = &vaapi_encode_h264_init,
986 .encode2 = &ff_vaapi_encode2,
987 .close = &ff_vaapi_encode_close,
988 .priv_class = &vaapi_encode_h264_class,
989 .capabilities = AV_CODEC_CAP_DELAY,
990 .defaults = vaapi_encode_h264_defaults,
991 .pix_fmts = (const enum AVPixelFormat[]) {
992 AV_PIX_FMT_VAAPI,
993 AV_PIX_FMT_NONE,
994 },
995};