f61dfaa1a932f2a843a211fb063175501bb58f9b
[libav.git] / libavcodec / vaapi_encode_h265.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 <string.h>
20
21 #include <va/va.h>
22 #include <va/va_enc_hevc.h>
23
24 #include "libavutil/avassert.h"
25 #include "libavutil/common.h"
26 #include "libavutil/opt.h"
27
28 #include "avcodec.h"
29 #include "cbs.h"
30 #include "cbs_h265.h"
31 #include "hevc.h"
32 #include "internal.h"
33 #include "put_bits.h"
34 #include "vaapi_encode.h"
35
36
37 typedef struct VAAPIEncodeH265Context {
38 unsigned int ctu_width;
39 unsigned int ctu_height;
40
41 int fixed_qp_idr;
42 int fixed_qp_p;
43 int fixed_qp_b;
44
45 H265RawVPS vps;
46 H265RawSPS sps;
47 H265RawPPS pps;
48 H265RawSlice slice;
49
50 int64_t last_idr_frame;
51 int pic_order_cnt;
52
53 int slice_nal_unit;
54 int slice_type;
55
56 CodedBitstreamContext cbc;
57 CodedBitstreamFragment current_access_unit;
58 } VAAPIEncodeH265Context;
59
60 typedef struct VAAPIEncodeH265Options {
61 int qp;
62 } VAAPIEncodeH265Options;
63
64
65 static int vaapi_encode_h265_write_access_unit(AVCodecContext *avctx,
66 char *data, size_t *data_len,
67 CodedBitstreamFragment *au)
68 {
69 VAAPIEncodeContext *ctx = avctx->priv_data;
70 VAAPIEncodeH265Context *priv = ctx->priv_data;
71 int err;
72
73 err = ff_cbs_write_fragment_data(&priv->cbc, au);
74 if (err < 0) {
75 av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
76 return err;
77 }
78
79 if (*data_len < 8 * au->data_size - au->data_bit_padding) {
80 av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
81 "%zu < %zu.\n", *data_len,
82 8 * au->data_size - au->data_bit_padding);
83 return AVERROR(ENOSPC);
84 }
85
86 memcpy(data, au->data, au->data_size);
87 *data_len = 8 * au->data_size - au->data_bit_padding;
88
89 return 0;
90 }
91
92 static int vaapi_encode_h265_add_nal(AVCodecContext *avctx,
93 CodedBitstreamFragment *au,
94 void *nal_unit)
95 {
96 VAAPIEncodeContext *ctx = avctx->priv_data;
97 VAAPIEncodeH265Context *priv = ctx->priv_data;
98 H265RawNALUnitHeader *header = nal_unit;
99 int err;
100
101 err = ff_cbs_insert_unit_content(&priv->cbc, au, -1,
102 header->nal_unit_type, nal_unit);
103 if (err < 0) {
104 av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: "
105 "type = %d.\n", header->nal_unit_type);
106 return err;
107 }
108
109 return 0;
110 }
111
112 static int vaapi_encode_h265_write_sequence_header(AVCodecContext *avctx,
113 char *data, size_t *data_len)
114 {
115 VAAPIEncodeContext *ctx = avctx->priv_data;
116 VAAPIEncodeH265Context *priv = ctx->priv_data;
117 CodedBitstreamFragment *au = &priv->current_access_unit;
118 int err;
119
120 err = vaapi_encode_h265_add_nal(avctx, au, &priv->vps);
121 if (err < 0)
122 goto fail;
123
124 err = vaapi_encode_h265_add_nal(avctx, au, &priv->sps);
125 if (err < 0)
126 goto fail;
127
128 err = vaapi_encode_h265_add_nal(avctx, au, &priv->pps);
129 if (err < 0)
130 goto fail;
131
132 err = vaapi_encode_h265_write_access_unit(avctx, data, data_len, au);
133 fail:
134 ff_cbs_fragment_uninit(&priv->cbc, au);
135 return err;
136 }
137
138 static int vaapi_encode_h265_write_slice_header(AVCodecContext *avctx,
139 VAAPIEncodePicture *pic,
140 VAAPIEncodeSlice *slice,
141 char *data, size_t *data_len)
142 {
143 VAAPIEncodeContext *ctx = avctx->priv_data;
144 VAAPIEncodeH265Context *priv = ctx->priv_data;
145 CodedBitstreamFragment *au = &priv->current_access_unit;
146 int err;
147
148 err = vaapi_encode_h265_add_nal(avctx, au, &priv->slice);
149 if (err < 0)
150 goto fail;
151
152 err = vaapi_encode_h265_write_access_unit(avctx, data, data_len, au);
153 fail:
154 ff_cbs_fragment_uninit(&priv->cbc, au);
155 return err;
156 }
157
158 static int vaapi_encode_h265_init_sequence_params(AVCodecContext *avctx)
159 {
160 VAAPIEncodeContext *ctx = avctx->priv_data;
161 VAAPIEncodeH265Context *priv = ctx->priv_data;
162 H265RawVPS *vps = &priv->vps;
163 H265RawSPS *sps = &priv->sps;
164 H265RawPPS *pps = &priv->pps;
165 H265RawVUI *vui = &sps->vui;
166 VAEncSequenceParameterBufferHEVC *vseq = ctx->codec_sequence_params;
167 VAEncPictureParameterBufferHEVC *vpic = ctx->codec_picture_params;
168 int i;
169
170 memset(&priv->current_access_unit, 0,
171 sizeof(priv->current_access_unit));
172
173 memset(vps, 0, sizeof(*vps));
174 memset(sps, 0, sizeof(*sps));
175 memset(pps, 0, sizeof(*pps));
176
177
178 // VPS
179
180 vps->nal_unit_header = (H265RawNALUnitHeader) {
181 .nal_unit_type = HEVC_NAL_VPS,
182 .nuh_layer_id = 0,
183 .nuh_temporal_id_plus1 = 1,
184 };
185
186 vps->vps_video_parameter_set_id = 0;
187
188 vps->vps_base_layer_internal_flag = 1;
189 vps->vps_base_layer_available_flag = 1;
190 vps->vps_max_layers_minus1 = 0;
191 vps->vps_max_sub_layers_minus1 = 0;
192 vps->vps_temporal_id_nesting_flag = 1;
193
194 vps->profile_tier_level = (H265RawProfileTierLevel) {
195 .general_profile_space = 0,
196 .general_profile_idc = avctx->profile,
197 .general_tier_flag = 0,
198
199 .general_progressive_source_flag = 1,
200 .general_interlaced_source_flag = 0,
201 .general_non_packed_constraint_flag = 1,
202 .general_frame_only_constraint_flag = 1,
203
204 .general_level_idc = avctx->level,
205 };
206 vps->profile_tier_level.general_profile_compatibility_flag[avctx->profile & 31] = 1;
207
208 vps->vps_sub_layer_ordering_info_present_flag = 0;
209 vps->vps_max_dec_pic_buffering_minus1[0] = (ctx->b_per_p > 0) + 1;
210 vps->vps_max_num_reorder_pics[0] = (ctx->b_per_p > 0);
211 vps->vps_max_latency_increase_plus1[0] = 0;
212
213 vps->vps_max_layer_id = 0;
214 vps->vps_num_layer_sets_minus1 = 0;
215 vps->layer_id_included_flag[0][0] = 1;
216
217 vps->vps_timing_info_present_flag = 1;
218 if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
219 vps->vps_num_units_in_tick = avctx->framerate.den;
220 vps->vps_time_scale = avctx->framerate.num;
221 vps->vps_poc_proportional_to_timing_flag = 1;
222 vps->vps_num_ticks_poc_diff_one_minus1 = 0;
223 } else {
224 vps->vps_num_units_in_tick = avctx->time_base.num;
225 vps->vps_time_scale = avctx->time_base.den;
226 vps->vps_poc_proportional_to_timing_flag = 0;
227 }
228 vps->vps_num_hrd_parameters = 0;
229
230
231 // SPS
232
233 sps->nal_unit_header = (H265RawNALUnitHeader) {
234 .nal_unit_type = HEVC_NAL_SPS,
235 .nuh_layer_id = 0,
236 .nuh_temporal_id_plus1 = 1,
237 };
238
239 sps->sps_video_parameter_set_id = vps->vps_video_parameter_set_id;
240
241 sps->sps_max_sub_layers_minus1 = vps->vps_max_sub_layers_minus1;
242 sps->sps_temporal_id_nesting_flag = vps->vps_temporal_id_nesting_flag;
243
244 sps->profile_tier_level = vps->profile_tier_level;
245
246 sps->sps_seq_parameter_set_id = 0;
247
248 sps->chroma_format_idc = 1; // YUV 4:2:0.
249 sps->separate_colour_plane_flag = 0;
250
251 sps->pic_width_in_luma_samples = ctx->surface_width;
252 sps->pic_height_in_luma_samples = ctx->surface_height;
253
254 if (avctx->width != ctx->surface_width ||
255 avctx->height != ctx->surface_height) {
256 sps->conformance_window_flag = 1;
257 sps->conf_win_left_offset = 0;
258 sps->conf_win_right_offset =
259 (ctx->surface_width - avctx->width) / 2;
260 sps->conf_win_top_offset = 0;
261 sps->conf_win_bottom_offset =
262 (ctx->surface_height - avctx->height) / 2;
263 } else {
264 sps->conformance_window_flag = 0;
265 }
266
267 sps->bit_depth_luma_minus8 =
268 avctx->profile == FF_PROFILE_HEVC_MAIN_10 ? 2 : 0;
269 sps->bit_depth_chroma_minus8 = sps->bit_depth_luma_minus8;
270
271 sps->log2_max_pic_order_cnt_lsb_minus4 = 8;
272
273 sps->sps_sub_layer_ordering_info_present_flag =
274 vps->vps_sub_layer_ordering_info_present_flag;
275 for (i = 0; i <= sps->sps_max_sub_layers_minus1; i++) {
276 sps->sps_max_dec_pic_buffering_minus1[i] =
277 vps->vps_max_dec_pic_buffering_minus1[i];
278 sps->sps_max_num_reorder_pics[i] =
279 vps->vps_max_num_reorder_pics[i];
280 sps->sps_max_latency_increase_plus1[i] =
281 vps->vps_max_latency_increase_plus1[i];
282 }
283
284 // These have to come from the capabilities of the encoder. We have no
285 // way to query them, so just hardcode parameters which work on the Intel
286 // driver.
287 // CTB size from 8x8 to 32x32.
288 sps->log2_min_luma_coding_block_size_minus3 = 0;
289 sps->log2_diff_max_min_luma_coding_block_size = 2;
290 // Transform size from 4x4 to 32x32.
291 sps->log2_min_luma_transform_block_size_minus2 = 0;
292 sps->log2_diff_max_min_luma_transform_block_size = 3;
293 // Full transform hierarchy allowed (2-5).
294 sps->max_transform_hierarchy_depth_inter = 3;
295 sps->max_transform_hierarchy_depth_intra = 3;
296 // AMP works.
297 sps->amp_enabled_flag = 1;
298 // SAO and temporal MVP do not work.
299 sps->sample_adaptive_offset_enabled_flag = 0;
300 sps->sps_temporal_mvp_enabled_flag = 0;
301
302 sps->pcm_enabled_flag = 0;
303
304 // STRPSs should ideally be here rather than defined individually in
305 // each slice, but the structure isn't completely fixed so for now
306 // don't bother.
307 sps->num_short_term_ref_pic_sets = 0;
308 sps->long_term_ref_pics_present_flag = 0;
309
310 sps->vui_parameters_present_flag = 1;
311
312 if (avctx->sample_aspect_ratio.num != 0 &&
313 avctx->sample_aspect_ratio.den != 0) {
314 static const AVRational sar_idc[] = {
315 { 0, 0 },
316 { 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 },
317 { 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 },
318 { 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 },
319 { 160, 99 }, { 4, 3 }, { 3, 2 }, { 2, 1 },
320 };
321 int i;
322 for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) {
323 if (avctx->sample_aspect_ratio.num == sar_idc[i].num &&
324 avctx->sample_aspect_ratio.den == sar_idc[i].den) {
325 vui->aspect_ratio_idc = i;
326 break;
327 }
328 }
329 if (i >= FF_ARRAY_ELEMS(sar_idc)) {
330 vui->aspect_ratio_idc = 255;
331 vui->sar_width = avctx->sample_aspect_ratio.num;
332 vui->sar_height = avctx->sample_aspect_ratio.den;
333 }
334 vui->aspect_ratio_info_present_flag = 1;
335 }
336
337 if (avctx->color_range != AVCOL_RANGE_UNSPECIFIED ||
338 avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
339 avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
340 avctx->colorspace != AVCOL_SPC_UNSPECIFIED) {
341 vui->video_signal_type_present_flag = 1;
342 vui->video_format = 5; // Unspecified.
343 vui->video_full_range_flag =
344 avctx->color_range == AVCOL_RANGE_JPEG;
345
346 if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
347 avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||
348 avctx->colorspace != AVCOL_SPC_UNSPECIFIED) {
349 vui->colour_description_present_flag = 1;
350 vui->colour_primaries = avctx->color_primaries;
351 vui->transfer_characteristics = avctx->color_trc;
352 vui->matrix_coefficients = avctx->colorspace;
353 }
354 } else {
355 vui->video_format = 5;
356 vui->video_full_range_flag = 0;
357 vui->colour_primaries = avctx->color_primaries;
358 vui->transfer_characteristics = avctx->color_trc;
359 vui->matrix_coefficients = avctx->colorspace;
360 }
361
362 if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
363 vui->chroma_loc_info_present_flag = 1;
364 vui->chroma_sample_loc_type_top_field =
365 vui->chroma_sample_loc_type_bottom_field =
366 avctx->chroma_sample_location - 1;
367 }
368
369 vui->vui_timing_info_present_flag = 1;
370 vui->vui_num_units_in_tick = vps->vps_num_units_in_tick;
371 vui->vui_time_scale = vps->vps_time_scale;
372 vui->vui_poc_proportional_to_timing_flag = vps->vps_poc_proportional_to_timing_flag;
373 vui->vui_num_ticks_poc_diff_one_minus1 = vps->vps_num_ticks_poc_diff_one_minus1;
374 vui->vui_hrd_parameters_present_flag = 0;
375
376 vui->bitstream_restriction_flag = 1;
377 vui->motion_vectors_over_pic_boundaries_flag = 1;
378 vui->restricted_ref_pic_lists_flag = 1;
379 vui->max_bytes_per_pic_denom = 0;
380 vui->max_bits_per_min_cu_denom = 0;
381 vui->log2_max_mv_length_horizontal = 15;
382 vui->log2_max_mv_length_vertical = 15;
383
384
385 // PPS
386
387 pps->nal_unit_header = (H265RawNALUnitHeader) {
388 .nal_unit_type = HEVC_NAL_PPS,
389 .nuh_layer_id = 0,
390 .nuh_temporal_id_plus1 = 1,
391 };
392
393 pps->pps_pic_parameter_set_id = 0;
394 pps->pps_seq_parameter_set_id = sps->sps_seq_parameter_set_id;
395
396 pps->num_ref_idx_l0_default_active_minus1 = 0;
397 pps->num_ref_idx_l1_default_active_minus1 = 0;
398
399 pps->init_qp_minus26 = priv->fixed_qp_idr - 26;
400
401 pps->cu_qp_delta_enabled_flag = (ctx->va_rc_mode != VA_RC_CQP);
402 pps->diff_cu_qp_delta_depth = 0;
403
404 pps->pps_loop_filter_across_slices_enabled_flag = 1;
405
406
407 // Fill VAAPI parameter buffers.
408
409 *vseq = (VAEncSequenceParameterBufferHEVC) {
410 .general_profile_idc = vps->profile_tier_level.general_profile_idc,
411 .general_level_idc = vps->profile_tier_level.general_level_idc,
412 .general_tier_flag = vps->profile_tier_level.general_tier_flag,
413
414 .intra_period = avctx->gop_size,
415 .intra_idr_period = avctx->gop_size,
416 .ip_period = ctx->b_per_p + 1,
417 .bits_per_second = avctx->bit_rate,
418
419 .pic_width_in_luma_samples = sps->pic_width_in_luma_samples,
420 .pic_height_in_luma_samples = sps->pic_height_in_luma_samples,
421
422 .seq_fields.bits = {
423 .chroma_format_idc = sps->chroma_format_idc,
424 .separate_colour_plane_flag = sps->separate_colour_plane_flag,
425 .bit_depth_luma_minus8 = sps->bit_depth_luma_minus8,
426 .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,
427 .scaling_list_enabled_flag = sps->scaling_list_enabled_flag,
428 .strong_intra_smoothing_enabled_flag =
429 sps->strong_intra_smoothing_enabled_flag,
430 .amp_enabled_flag = sps->amp_enabled_flag,
431 .sample_adaptive_offset_enabled_flag =
432 sps->sample_adaptive_offset_enabled_flag,
433 .pcm_enabled_flag = sps->pcm_enabled_flag,
434 .pcm_loop_filter_disabled_flag = sps->pcm_loop_filter_disabled_flag,
435 .sps_temporal_mvp_enabled_flag = sps->sps_temporal_mvp_enabled_flag,
436 },
437
438 .log2_min_luma_coding_block_size_minus3 =
439 sps->log2_min_luma_coding_block_size_minus3,
440 .log2_diff_max_min_luma_coding_block_size =
441 sps->log2_diff_max_min_luma_coding_block_size,
442 .log2_min_transform_block_size_minus2 =
443 sps->log2_min_luma_transform_block_size_minus2,
444 .log2_diff_max_min_transform_block_size =
445 sps->log2_diff_max_min_luma_transform_block_size,
446 .max_transform_hierarchy_depth_inter =
447 sps->max_transform_hierarchy_depth_inter,
448 .max_transform_hierarchy_depth_intra =
449 sps->max_transform_hierarchy_depth_intra,
450
451 .pcm_sample_bit_depth_luma_minus1 =
452 sps->pcm_sample_bit_depth_luma_minus1,
453 .pcm_sample_bit_depth_chroma_minus1 =
454 sps->pcm_sample_bit_depth_chroma_minus1,
455 .log2_min_pcm_luma_coding_block_size_minus3 =
456 sps->log2_min_pcm_luma_coding_block_size_minus3,
457 .log2_max_pcm_luma_coding_block_size_minus3 =
458 sps->log2_min_pcm_luma_coding_block_size_minus3 +
459 sps->log2_diff_max_min_pcm_luma_coding_block_size,
460
461 .vui_parameters_present_flag = 0,
462 };
463
464 *vpic = (VAEncPictureParameterBufferHEVC) {
465 .decoded_curr_pic = {
466 .picture_id = VA_INVALID_ID,
467 .flags = VA_PICTURE_HEVC_INVALID,
468 },
469
470 .coded_buf = VA_INVALID_ID,
471
472 .collocated_ref_pic_index = 0xff,
473
474 .last_picture = 0,
475
476 .pic_init_qp = pps->init_qp_minus26 + 26,
477 .diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth,
478 .pps_cb_qp_offset = pps->pps_cb_qp_offset,
479 .pps_cr_qp_offset = pps->pps_cr_qp_offset,
480
481 .num_tile_columns_minus1 = pps->num_tile_columns_minus1,
482 .num_tile_rows_minus1 = pps->num_tile_rows_minus1,
483
484 .log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level_minus2,
485 .ctu_max_bitsize_allowed = 0,
486
487 .num_ref_idx_l0_default_active_minus1 =
488 pps->num_ref_idx_l0_default_active_minus1,
489 .num_ref_idx_l1_default_active_minus1 =
490 pps->num_ref_idx_l1_default_active_minus1,
491
492 .slice_pic_parameter_set_id = pps->pps_pic_parameter_set_id,
493
494 .pic_fields.bits = {
495 .sign_data_hiding_enabled_flag = pps->sign_data_hiding_enabled_flag,
496 .constrained_intra_pred_flag = pps->constrained_intra_pred_flag,
497 .transform_skip_enabled_flag = pps->transform_skip_enabled_flag,
498 .cu_qp_delta_enabled_flag = pps->cu_qp_delta_enabled_flag,
499 .weighted_pred_flag = pps->weighted_pred_flag,
500 .weighted_bipred_flag = pps->weighted_bipred_flag,
501 .transquant_bypass_enabled_flag = pps->transquant_bypass_enabled_flag,
502 .tiles_enabled_flag = pps->tiles_enabled_flag,
503 .entropy_coding_sync_enabled_flag = pps->entropy_coding_sync_enabled_flag,
504 .loop_filter_across_tiles_enabled_flag =
505 pps->loop_filter_across_tiles_enabled_flag,
506 .scaling_list_data_present_flag = (sps->sps_scaling_list_data_present_flag |
507 pps->pps_scaling_list_data_present_flag),
508 .screen_content_flag = 0,
509 .enable_gpu_weighted_prediction = 0,
510 .no_output_of_prior_pics_flag = 0,
511 },
512 };
513
514 return 0;
515 }
516
517 static int vaapi_encode_h265_init_picture_params(AVCodecContext *avctx,
518 VAAPIEncodePicture *pic)
519 {
520 VAAPIEncodeContext *ctx = avctx->priv_data;
521 VAAPIEncodeH265Context *priv = ctx->priv_data;
522 VAEncPictureParameterBufferHEVC *vpic = pic->codec_picture_params;
523 int i;
524
525 if (pic->type == PICTURE_TYPE_IDR) {
526 av_assert0(pic->display_order == pic->encode_order);
527
528 priv->last_idr_frame = pic->display_order;
529
530 priv->slice_nal_unit = HEVC_NAL_IDR_W_RADL;
531 priv->slice_type = HEVC_SLICE_I;
532 } else {
533 av_assert0(pic->encode_order > priv->last_idr_frame);
534
535 if (pic->type == PICTURE_TYPE_I) {
536 priv->slice_nal_unit = HEVC_NAL_CRA_NUT;
537 priv->slice_type = HEVC_SLICE_I;
538 } else if (pic->type == PICTURE_TYPE_P) {
539 av_assert0(pic->refs[0]);
540 priv->slice_nal_unit = HEVC_NAL_TRAIL_R;
541 priv->slice_type = HEVC_SLICE_P;
542 } else {
543 av_assert0(pic->refs[0] && pic->refs[1]);
544 if (pic->refs[1]->type == PICTURE_TYPE_I)
545 priv->slice_nal_unit = HEVC_NAL_RASL_N;
546 else
547 priv->slice_nal_unit = HEVC_NAL_TRAIL_N;
548 priv->slice_type = HEVC_SLICE_B;
549 }
550 }
551 priv->pic_order_cnt = pic->display_order - priv->last_idr_frame;
552
553 vpic->decoded_curr_pic = (VAPictureHEVC) {
554 .picture_id = pic->recon_surface,
555 .pic_order_cnt = priv->pic_order_cnt,
556 .flags = 0,
557 };
558
559 for (i = 0; i < pic->nb_refs; i++) {
560 VAAPIEncodePicture *ref = pic->refs[i];
561 av_assert0(ref && ref->encode_order < pic->encode_order);
562
563 vpic->reference_frames[i] = (VAPictureHEVC) {
564 .picture_id = ref->recon_surface,
565 .pic_order_cnt = ref->display_order - priv->last_idr_frame,
566 .flags = (ref->display_order < pic->display_order ?
567 VA_PICTURE_HEVC_RPS_ST_CURR_BEFORE : 0) |
568 (ref->display_order > pic->display_order ?
569 VA_PICTURE_HEVC_RPS_ST_CURR_AFTER : 0),
570 };
571 }
572 for (; i < FF_ARRAY_ELEMS(vpic->reference_frames); i++) {
573 vpic->reference_frames[i] = (VAPictureHEVC) {
574 .picture_id = VA_INVALID_ID,
575 .flags = VA_PICTURE_HEVC_INVALID,
576 };
577 }
578
579 vpic->coded_buf = pic->output_buffer;
580
581 vpic->nal_unit_type = priv->slice_nal_unit;
582
583 switch (pic->type) {
584 case PICTURE_TYPE_IDR:
585 vpic->pic_fields.bits.idr_pic_flag = 1;
586 vpic->pic_fields.bits.coding_type = 1;
587 vpic->pic_fields.bits.reference_pic_flag = 1;
588 break;
589 case PICTURE_TYPE_I:
590 vpic->pic_fields.bits.idr_pic_flag = 0;
591 vpic->pic_fields.bits.coding_type = 1;
592 vpic->pic_fields.bits.reference_pic_flag = 1;
593 break;
594 case PICTURE_TYPE_P:
595 vpic->pic_fields.bits.idr_pic_flag = 0;
596 vpic->pic_fields.bits.coding_type = 2;
597 vpic->pic_fields.bits.reference_pic_flag = 1;
598 break;
599 case PICTURE_TYPE_B:
600 vpic->pic_fields.bits.idr_pic_flag = 0;
601 vpic->pic_fields.bits.coding_type = 3;
602 vpic->pic_fields.bits.reference_pic_flag = 0;
603 break;
604 default:
605 av_assert0(0 && "invalid picture type");
606 }
607
608 pic->nb_slices = 1;
609
610 return 0;
611 }
612
613 static int vaapi_encode_h265_init_slice_params(AVCodecContext *avctx,
614 VAAPIEncodePicture *pic,
615 VAAPIEncodeSlice *slice)
616 {
617 VAAPIEncodeContext *ctx = avctx->priv_data;
618 VAAPIEncodeH265Context *priv = ctx->priv_data;
619 const H265RawSPS *sps = &priv->sps;
620 const H265RawPPS *pps = &priv->pps;
621 H265RawSliceHeader *sh = &priv->slice.header;
622 VAEncPictureParameterBufferHEVC *vpic = pic->codec_picture_params;
623 VAEncSliceParameterBufferHEVC *vslice = slice->codec_slice_params;
624 int i;
625
626 sh->nal_unit_header = (H265RawNALUnitHeader) {
627 .nal_unit_type = priv->slice_nal_unit,
628 .nuh_layer_id = 0,
629 .nuh_temporal_id_plus1 = 1,
630 };
631
632 sh->slice_pic_parameter_set_id = pps->pps_pic_parameter_set_id;
633
634 // Currently we only support one slice per frame.
635 sh->first_slice_segment_in_pic_flag = 1;
636 sh->slice_segment_address = 0;
637
638 sh->slice_type = priv->slice_type;
639
640 sh->slice_pic_order_cnt_lsb = priv->pic_order_cnt &
641 (1 << (sps->log2_max_pic_order_cnt_lsb_minus4 + 4)) - 1;
642
643 if (pic->type != PICTURE_TYPE_IDR) {
644 H265RawSTRefPicSet *rps;
645 VAAPIEncodePicture *st;
646 int used;
647
648 sh->short_term_ref_pic_set_sps_flag = 0;
649
650 rps = &sh->short_term_ref_pic_set;
651 memset(rps, 0, sizeof(*rps));
652
653 for (st = ctx->pic_start; st; st = st->next) {
654 if (st->encode_order >= pic->encode_order) {
655 // Not yet in DPB.
656 continue;
657 }
658 used = 0;
659 for (i = 0; i < pic->nb_refs; i++) {
660 if (pic->refs[i] == st)
661 used = 1;
662 }
663 if (!used) {
664 // Usually each picture always uses all of the others in the
665 // DPB as references. The one case we have to treat here is
666 // a non-IDR IRAP picture, which may need to hold unused
667 // references across itself to be used for the decoding of
668 // following RASL pictures. This looks for such an RASL
669 // picture, and keeps the reference if there is one.
670 VAAPIEncodePicture *rp;
671 for (rp = ctx->pic_start; rp; rp = rp->next) {
672 if (rp->encode_order < pic->encode_order)
673 continue;
674 if (rp->type != PICTURE_TYPE_B)
675 continue;
676 if (rp->refs[0] == st && rp->refs[1] == pic)
677 break;
678 }
679 if (!rp)
680 continue;
681 }
682 // This only works for one instance of each (delta_poc_sN_minus1
683 // is relative to the previous frame in the list, not relative to
684 // the current frame directly).
685 if (st->display_order < pic->display_order) {
686 rps->delta_poc_s0_minus1[rps->num_negative_pics] =
687 pic->display_order - st->display_order - 1;
688 rps->used_by_curr_pic_s0_flag[rps->num_negative_pics] = used;
689 ++rps->num_negative_pics;
690 } else {
691 rps->delta_poc_s1_minus1[rps->num_positive_pics] =
692 st->display_order - pic->display_order - 1;
693 rps->used_by_curr_pic_s1_flag[rps->num_positive_pics] = used;
694 ++rps->num_positive_pics;
695 }
696 }
697
698 sh->num_long_term_sps = 0;
699 sh->num_long_term_pics = 0;
700
701 sh->slice_temporal_mvp_enabled_flag =
702 sps->sps_temporal_mvp_enabled_flag;
703 if (sh->slice_temporal_mvp_enabled_flag) {
704 sh->collocated_from_l0_flag = sh->slice_type == HEVC_SLICE_B;
705 sh->collocated_ref_idx = 0;
706 }
707
708 sh->num_ref_idx_active_override_flag = 0;
709 sh->num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1;
710 sh->num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1;
711 }
712
713 sh->slice_sao_luma_flag = sh->slice_sao_chroma_flag =
714 sps->sample_adaptive_offset_enabled_flag;
715
716 if (pic->type == PICTURE_TYPE_B)
717 sh->slice_qp_delta = priv->fixed_qp_b - (pps->init_qp_minus26 + 26);
718 else if (pic->type == PICTURE_TYPE_P)
719 sh->slice_qp_delta = priv->fixed_qp_p - (pps->init_qp_minus26 + 26);
720 else
721 sh->slice_qp_delta = priv->fixed_qp_idr - (pps->init_qp_minus26 + 26);
722
723
724 *vslice = (VAEncSliceParameterBufferHEVC) {
725 .slice_segment_address = sh->slice_segment_address,
726 .num_ctu_in_slice = priv->ctu_width * priv->ctu_height,
727
728 .slice_type = sh->slice_type,
729 .slice_pic_parameter_set_id = sh->slice_pic_parameter_set_id,
730
731 .num_ref_idx_l0_active_minus1 = sh->num_ref_idx_l0_active_minus1,
732 .num_ref_idx_l1_active_minus1 = sh->num_ref_idx_l1_active_minus1,
733 .ref_pic_list0[0] = vpic->reference_frames[0],
734 .ref_pic_list1[0] = vpic->reference_frames[1],
735
736 .luma_log2_weight_denom = sh->luma_log2_weight_denom,
737 .delta_chroma_log2_weight_denom = sh->delta_chroma_log2_weight_denom,
738
739 .max_num_merge_cand = 5 - sh->five_minus_max_num_merge_cand,
740
741 .slice_qp_delta = sh->slice_qp_delta,
742 .slice_cb_qp_offset = sh->slice_cb_qp_offset,
743 .slice_cr_qp_offset = sh->slice_cr_qp_offset,
744
745 .slice_beta_offset_div2 = sh->slice_beta_offset_div2,
746 .slice_tc_offset_div2 = sh->slice_tc_offset_div2,
747
748 .slice_fields.bits = {
749 .last_slice_of_pic_flag = 1,
750 .dependent_slice_segment_flag = sh->dependent_slice_segment_flag,
751 .colour_plane_id = sh->colour_plane_id,
752 .slice_temporal_mvp_enabled_flag =
753 sh->slice_temporal_mvp_enabled_flag,
754 .slice_sao_luma_flag = sh->slice_sao_luma_flag,
755 .slice_sao_chroma_flag = sh->slice_sao_chroma_flag,
756 .num_ref_idx_active_override_flag =
757 sh->num_ref_idx_active_override_flag,
758 .mvd_l1_zero_flag = sh->mvd_l1_zero_flag,
759 .cabac_init_flag = sh->cabac_init_flag,
760 .slice_deblocking_filter_disabled_flag =
761 sh->slice_deblocking_filter_disabled_flag,
762 .slice_loop_filter_across_slices_enabled_flag =
763 sh->slice_loop_filter_across_slices_enabled_flag,
764 .collocated_from_l0_flag = sh->collocated_from_l0_flag,
765 },
766 };
767
768
769 return 0;
770 }
771
772 static av_cold int vaapi_encode_h265_configure(AVCodecContext *avctx)
773 {
774 VAAPIEncodeContext *ctx = avctx->priv_data;
775 VAAPIEncodeH265Context *priv = ctx->priv_data;
776 VAAPIEncodeH265Options *opt = ctx->codec_options;
777 int err;
778
779 err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_HEVC, avctx);
780 if (err < 0)
781 return err;
782
783 priv->ctu_width = FFALIGN(ctx->surface_width, 32) / 32;
784 priv->ctu_height = FFALIGN(ctx->surface_height, 32) / 32;
785
786 av_log(avctx, AV_LOG_VERBOSE, "Input %ux%u -> Surface %ux%u -> CTU %ux%u.\n",
787 avctx->width, avctx->height, ctx->surface_width,
788 ctx->surface_height, priv->ctu_width, priv->ctu_height);
789
790 if (ctx->va_rc_mode == VA_RC_CQP) {
791 priv->fixed_qp_p = opt->qp;
792 if (avctx->i_quant_factor > 0.0)
793 priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +
794 avctx->i_quant_offset) + 0.5);
795 else
796 priv->fixed_qp_idr = priv->fixed_qp_p;
797 if (avctx->b_quant_factor > 0.0)
798 priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +
799 avctx->b_quant_offset) + 0.5);
800 else
801 priv->fixed_qp_b = priv->fixed_qp_p;
802
803 av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
804 "%d / %d / %d for IDR- / P- / B-frames.\n",
805 priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
806
807 } else if (ctx->va_rc_mode == VA_RC_CBR) {
808 // These still need to be set for pic_init_qp/slice_qp_delta.
809 priv->fixed_qp_idr = 30;
810 priv->fixed_qp_p = 30;
811 priv->fixed_qp_b = 30;
812
813 av_log(avctx, AV_LOG_DEBUG, "Using constant-bitrate = %d bps.\n",
814 avctx->bit_rate);
815
816 } else {
817 av_assert0(0 && "Invalid RC mode.");
818 }
819
820 return 0;
821 }
822
823 static const VAAPIEncodeType vaapi_encode_type_h265 = {
824 .priv_data_size = sizeof(VAAPIEncodeH265Context),
825
826 .configure = &vaapi_encode_h265_configure,
827
828 .sequence_params_size = sizeof(VAEncSequenceParameterBufferHEVC),
829 .init_sequence_params = &vaapi_encode_h265_init_sequence_params,
830
831 .picture_params_size = sizeof(VAEncPictureParameterBufferHEVC),
832 .init_picture_params = &vaapi_encode_h265_init_picture_params,
833
834 .slice_params_size = sizeof(VAEncSliceParameterBufferHEVC),
835 .init_slice_params = &vaapi_encode_h265_init_slice_params,
836
837 .sequence_header_type = VAEncPackedHeaderSequence,
838 .write_sequence_header = &vaapi_encode_h265_write_sequence_header,
839
840 .slice_header_type = VAEncPackedHeaderHEVC_Slice,
841 .write_slice_header = &vaapi_encode_h265_write_slice_header,
842 };
843
844 static av_cold int vaapi_encode_h265_init(AVCodecContext *avctx)
845 {
846 VAAPIEncodeContext *ctx = avctx->priv_data;
847
848 ctx->codec = &vaapi_encode_type_h265;
849
850 switch (avctx->profile) {
851 case FF_PROFILE_HEVC_MAIN:
852 case FF_PROFILE_UNKNOWN:
853 ctx->va_profile = VAProfileHEVCMain;
854 ctx->va_rt_format = VA_RT_FORMAT_YUV420;
855 break;
856 case FF_PROFILE_HEVC_MAIN_10:
857 #ifdef VA_RT_FORMAT_YUV420_10BPP
858 ctx->va_profile = VAProfileHEVCMain10;
859 ctx->va_rt_format = VA_RT_FORMAT_YUV420_10BPP;
860 break;
861 #else
862 av_log(avctx, AV_LOG_ERROR, "10-bit encoding is not "
863 "supported with this VAAPI version.\n");
864 return AVERROR(ENOSYS);
865 #endif
866 default:
867 av_log(avctx, AV_LOG_ERROR, "Unknown H.265 profile %d.\n",
868 avctx->profile);
869 return AVERROR(EINVAL);
870 }
871 ctx->va_entrypoint = VAEntrypointEncSlice;
872
873 if (avctx->bit_rate > 0)
874 ctx->va_rc_mode = VA_RC_CBR;
875 else
876 ctx->va_rc_mode = VA_RC_CQP;
877
878 ctx->va_packed_headers =
879 VA_ENC_PACKED_HEADER_SEQUENCE | // VPS, SPS and PPS.
880 VA_ENC_PACKED_HEADER_SLICE; // Slice headers.
881
882 ctx->surface_width = FFALIGN(avctx->width, 16);
883 ctx->surface_height = FFALIGN(avctx->height, 16);
884
885 return ff_vaapi_encode_init(avctx);
886 }
887
888 static av_cold int vaapi_encode_h265_close(AVCodecContext *avctx)
889 {
890 VAAPIEncodeContext *ctx = avctx->priv_data;
891 VAAPIEncodeH265Context *priv = ctx->priv_data;
892
893 if (priv)
894 ff_cbs_close(&priv->cbc);
895
896 return ff_vaapi_encode_close(avctx);
897 }
898
899 #define OFFSET(x) (offsetof(VAAPIEncodeContext, codec_options_data) + \
900 offsetof(VAAPIEncodeH265Options, x))
901 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
902 static const AVOption vaapi_encode_h265_options[] = {
903 { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
904 OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 25 }, 0, 52, FLAGS },
905 { NULL },
906 };
907
908 static const AVCodecDefault vaapi_encode_h265_defaults[] = {
909 { "profile", "1" },
910 { "level", "51" },
911 { "b", "0" },
912 { "bf", "2" },
913 { "g", "120" },
914 { "i_qfactor", "1.0" },
915 { "i_qoffset", "0.0" },
916 { "b_qfactor", "1.2" },
917 { "b_qoffset", "0.0" },
918 { NULL },
919 };
920
921 static const AVClass vaapi_encode_h265_class = {
922 .class_name = "h265_vaapi",
923 .item_name = av_default_item_name,
924 .option = vaapi_encode_h265_options,
925 .version = LIBAVUTIL_VERSION_INT,
926 };
927
928 AVCodec ff_hevc_vaapi_encoder = {
929 .name = "hevc_vaapi",
930 .long_name = NULL_IF_CONFIG_SMALL("H.265/HEVC (VAAPI)"),
931 .type = AVMEDIA_TYPE_VIDEO,
932 .id = AV_CODEC_ID_HEVC,
933 .priv_data_size = (sizeof(VAAPIEncodeContext) +
934 sizeof(VAAPIEncodeH265Options)),
935 .init = &vaapi_encode_h265_init,
936 .encode2 = &ff_vaapi_encode2,
937 .close = &vaapi_encode_h265_close,
938 .priv_class = &vaapi_encode_h265_class,
939 .capabilities = AV_CODEC_CAP_DELAY,
940 .defaults = vaapi_encode_h265_defaults,
941 .pix_fmts = (const enum AVPixelFormat[]) {
942 AV_PIX_FMT_VAAPI,
943 AV_PIX_FMT_NONE,
944 },
945 };