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