git.sesse.net Git - ffmpeg/blob - libavcodec/vaapi_encode_h264.c

   1 /*
   2  * This file is part of FFmpeg.
   3  *
   4  * FFmpeg is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * FFmpeg is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with FFmpeg; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  17  */
  18
  19 #include <string.h>
  20
  21 #include <va/va.h>
  22 #include <va/va_enc_h264.h>
  23
  24 #include "libavutil/avassert.h"
  25 #include "libavutil/common.h"
  26 #include "libavutil/internal.h"
  27 #include "libavutil/opt.h"
  28
  29 #include "avcodec.h"
  30 #include "cbs.h"
  31 #include "cbs_h264.h"
  32 #include "h264.h"
  33 #include "h264_sei.h"
  34 #include "internal.h"
  35 #include "vaapi_encode.h"
  36
  37 enum {
  38     SEI_TIMING         = 0x01,
  39     SEI_IDENTIFIER     = 0x02,
  40     SEI_RECOVERY_POINT = 0x04,
  41 };
  42
  43 // Random (version 4) ISO 11578 UUID.
  44 static const uint8_t vaapi_encode_h264_sei_identifier_uuid[16] = {
  45     0x59, 0x94, 0x8b, 0x28, 0x11, 0xec, 0x45, 0xaf,
  46     0x96, 0x75, 0x19, 0xd4, 0x1f, 0xea, 0xa9, 0x4d,
  47 };
  48
  49 typedef struct VAAPIEncodeH264Context {
  50     int mb_width;
  51     int mb_height;
  52
  53     int fixed_qp_idr;
  54     int fixed_qp_p;
  55     int fixed_qp_b;
  56
  57     H264RawAUD aud;
  58     H264RawSPS sps;
  59     H264RawPPS pps;
  60     H264RawSEI sei;
  61     H264RawSlice slice;
  62
  63     H264RawSEIBufferingPeriod buffering_period;
  64     H264RawSEIPicTiming pic_timing;
  65     H264RawSEIRecoveryPoint recovery_point;
  66     H264RawSEIUserDataUnregistered identifier;
  67     char *identifier_string;
  68
  69     int frame_num;
  70     int pic_order_cnt;
  71     int next_frame_num;
  72     int64_t last_idr_frame;
  73     int64_t idr_pic_count;
  74
  75     int primary_pic_type;
  76     int slice_type;
  77
  78     int cpb_delay;
  79     int dpb_delay;
  80
  81     CodedBitstreamContext *cbc;
  82     CodedBitstreamFragment current_access_unit;
  83     int aud_needed;
  84     int sei_needed;
  85 } VAAPIEncodeH264Context;
  86
  87 typedef struct VAAPIEncodeH264Options {
  88     int qp;
  89     int quality;
  90     int low_power;
  91     // Entropy encoder type.
  92     int coder;
  93     int aud;
  94     int sei;
  95 } VAAPIEncodeH264Options;
  96
  97
  98 static int vaapi_encode_h264_write_access_unit(AVCodecContext *avctx,
  99                                                char *data, size_t *data_len,
 100                                                CodedBitstreamFragment *au)
 101 {
 102     VAAPIEncodeContext      *ctx = avctx->priv_data;
 103     VAAPIEncodeH264Context *priv = ctx->priv_data;
 104     int err;
 105
 106     err = ff_cbs_write_fragment_data(priv->cbc, au);
 107     if (err < 0) {
 108         av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
 109         return err;
 110     }
 111
 112     if (*data_len < 8 * au->data_size - au->data_bit_padding) {
 113         av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
 114                "%zu < %zu.\n", *data_len,
 115                8 * au->data_size - au->data_bit_padding);
 116         return AVERROR(ENOSPC);
 117     }
 118
 119     memcpy(data, au->data, au->data_size);
 120     *data_len = 8 * au->data_size - au->data_bit_padding;
 121
 122     return 0;
 123 }
 124
 125 static int vaapi_encode_h264_add_nal(AVCodecContext *avctx,
 126                                      CodedBitstreamFragment *au,
 127                                      void *nal_unit)
 128 {
 129     VAAPIEncodeContext      *ctx = avctx->priv_data;
 130     VAAPIEncodeH264Context *priv = ctx->priv_data;
 131     H264RawNALUnitHeader *header = nal_unit;
 132     int err;
 133
 134     err = ff_cbs_insert_unit_content(priv->cbc, au, -1,
 135                                      header->nal_unit_type, nal_unit);
 136     if (err < 0) {
 137         av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: "
 138                "type = %d.\n", header->nal_unit_type);
 139         return err;
 140     }
 141
 142     return 0;
 143 }
 144
 145 static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,
 146                                                    char *data, size_t *data_len)
 147 {
 148     VAAPIEncodeContext      *ctx = avctx->priv_data;
 149     VAAPIEncodeH264Context *priv = ctx->priv_data;
 150     CodedBitstreamFragment   *au = &priv->current_access_unit;
 151     int err;
 152
 153     if (priv->aud_needed) {
 154         err = vaapi_encode_h264_add_nal(avctx, au, &priv->aud);
 155         if (err < 0)
 156             goto fail;
 157         priv->aud_needed = 0;
 158     }
 159
 160     err = vaapi_encode_h264_add_nal(avctx, au, &priv->sps);
 161     if (err < 0)
 162         goto fail;
 163
 164     err = vaapi_encode_h264_add_nal(avctx, au, &priv->pps);
 165     if (err < 0)
 166         goto fail;
 167
 168     err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 169 fail:
 170     ff_cbs_fragment_uninit(priv->cbc, au);
 171     return err;
 172 }
 173
 174 static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,
 175                                                 VAAPIEncodePicture *pic,
 176                                                 VAAPIEncodeSlice *slice,
 177                                                 char *data, size_t *data_len)
 178 {
 179     VAAPIEncodeContext      *ctx = avctx->priv_data;
 180     VAAPIEncodeH264Context *priv = ctx->priv_data;
 181     CodedBitstreamFragment   *au = &priv->current_access_unit;
 182     int err;
 183
 184     if (priv->aud_needed) {
 185         err = vaapi_encode_h264_add_nal(avctx, au, &priv->aud);
 186         if (err < 0)
 187             goto fail;
 188         priv->aud_needed = 0;
 189     }
 190
 191     err = vaapi_encode_h264_add_nal(avctx, au, &priv->slice);
 192     if (err < 0)
 193         goto fail;
 194
 195     err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 196 fail:
 197     ff_cbs_fragment_uninit(priv->cbc, au);
 198     return err;
 199 }
 200
 201 static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,
 202                                                 VAAPIEncodePicture *pic,
 203                                                 int index, int *type,
 204                                                 char *data, size_t *data_len)
 205 {
 206     VAAPIEncodeContext      *ctx = avctx->priv_data;
 207     VAAPIEncodeH264Context *priv = ctx->priv_data;
 208     VAAPIEncodeH264Options  *opt = ctx->codec_options;
 209     CodedBitstreamFragment   *au = &priv->current_access_unit;
 210     int err, i;
 211
 212     if (priv->sei_needed) {
 213         if (priv->aud_needed) {
 214             err = vaapi_encode_h264_add_nal(avctx, au, &priv->aud);
 215             if (err < 0)
 216                 goto fail;
 217             priv->aud_needed = 0;
 218         }
 219
 220         memset(&priv->sei, 0, sizeof(priv->sei));
 221         priv->sei.nal_unit_header.nal_unit_type = H264_NAL_SEI;
 222
 223         i = 0;
 224         if (pic->encode_order == 0 && opt->sei & SEI_IDENTIFIER) {
 225             priv->sei.payload[i].payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED;
 226             priv->sei.payload[i].payload.user_data_unregistered = priv->identifier;
 227             ++i;
 228         }
 229         if (opt->sei & SEI_TIMING) {
 230             if (pic->type == PICTURE_TYPE_IDR) {
 231                 priv->sei.payload[i].payload_type = H264_SEI_TYPE_BUFFERING_PERIOD;
 232                 priv->sei.payload[i].payload.buffering_period = priv->buffering_period;
 233                 ++i;
 234             }
 235             priv->sei.payload[i].payload_type = H264_SEI_TYPE_PIC_TIMING;
 236             priv->sei.payload[i].payload.pic_timing = priv->pic_timing;
 237             ++i;
 238         }
 239         if (opt->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) {
 240             priv->sei.payload[i].payload_type = H264_SEI_TYPE_RECOVERY_POINT;
 241             priv->sei.payload[i].payload.recovery_point = priv->recovery_point;
 242             ++i;
 243         }
 244
 245         priv->sei.payload_count = i;
 246         av_assert0(priv->sei.payload_count > 0);
 247
 248         err = vaapi_encode_h264_add_nal(avctx, au, &priv->sei);
 249         if (err < 0)
 250             goto fail;
 251         priv->sei_needed = 0;
 252
 253         err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 254         if (err < 0)
 255             goto fail;
 256
 257         ff_cbs_fragment_uninit(priv->cbc, au);
 258
 259         *type = VAEncPackedHeaderRawData;
 260         return 0;
 261     } else {
 262         return AVERROR_EOF;
 263     }
 264
 265 fail:
 266     ff_cbs_fragment_uninit(priv->cbc, au);
 267     return err;
 268 }
 269
 270 static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
 271 {
 272     VAAPIEncodeContext                *ctx = avctx->priv_data;
 273     VAAPIEncodeH264Context           *priv = ctx->priv_data;
 274     VAAPIEncodeH264Options            *opt = ctx->codec_options;
 275     H264RawSPS                        *sps = &priv->sps;
 276     H264RawPPS                        *pps = &priv->pps;
 277     VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
 278     VAEncPictureParameterBufferH264  *vpic = ctx->codec_picture_params;
 279
 280     memset(&priv->current_access_unit, 0,
 281            sizeof(priv->current_access_unit));
 282
 283     memset(sps, 0, sizeof(*sps));
 284     memset(pps, 0, sizeof(*pps));
 285
 286     sps->nal_unit_header.nal_ref_idc   = 3;
 287     sps->nal_unit_header.nal_unit_type = H264_NAL_SPS;
 288
 289     sps->profile_idc = avctx->profile & 0xff;
 290     sps->constraint_set1_flag =
 291         !!(avctx->profile & FF_PROFILE_H264_CONSTRAINED);
 292     sps->constraint_set3_flag =
 293         !!(avctx->profile & FF_PROFILE_H264_INTRA);
 294
 295     sps->level_idc = avctx->level;
 296
 297     sps->seq_parameter_set_id = 0;
 298     sps->chroma_format_idc    = 1;
 299
 300     sps->log2_max_frame_num_minus4 = 4;
 301     sps->pic_order_cnt_type        = 0;
 302     sps->log2_max_pic_order_cnt_lsb_minus4 =
 303         av_clip(av_log2(ctx->b_per_p + 1) - 2, 0, 12);
 304
 305     sps->max_num_ref_frames =
 306         (avctx->profile & FF_PROFILE_H264_INTRA) ? 0 :
 307         1 + (ctx->b_per_p > 0);
 308
 309     sps->pic_width_in_mbs_minus1        = priv->mb_width  - 1;
 310     sps->pic_height_in_map_units_minus1 = priv->mb_height - 1;
 311
 312     sps->frame_mbs_only_flag = 1;
 313     sps->direct_8x8_inference_flag = 1;
 314
 315     if (avctx->width  != 16 * priv->mb_width ||
 316         avctx->height != 16 * priv->mb_height) {
 317         sps->frame_cropping_flag = 1;
 318
 319         sps->frame_crop_left_offset   = 0;
 320         sps->frame_crop_right_offset  =
 321             (16 * priv->mb_width - avctx->width) / 2;
 322         sps->frame_crop_top_offset    = 0;
 323         sps->frame_crop_bottom_offset =
 324             (16 * priv->mb_height - avctx->height) / 2;
 325     } else {
 326         sps->frame_cropping_flag = 0;
 327     }
 328
 329     sps->vui_parameters_present_flag = 1;
 330
 331     if (avctx->sample_aspect_ratio.num != 0 &&
 332         avctx->sample_aspect_ratio.den != 0) {
 333         static const AVRational sar_idc[] = {
 334             {   0,  0 },
 335             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },
 336             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },
 337             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },
 338             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },
 339         };
 340         int i;
 341         for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) {
 342             if (avctx->sample_aspect_ratio.num == sar_idc[i].num &&
 343                 avctx->sample_aspect_ratio.den == sar_idc[i].den) {
 344                 sps->vui.aspect_ratio_idc = i;
 345                 break;
 346             }
 347         }
 348         if (i >= FF_ARRAY_ELEMS(sar_idc)) {
 349             sps->vui.aspect_ratio_idc = 255;
 350             sps->vui.sar_width  = avctx->sample_aspect_ratio.num;
 351             sps->vui.sar_height = avctx->sample_aspect_ratio.den;
 352         }
 353         sps->vui.aspect_ratio_info_present_flag = 1;
 354     }
 355
 356     if (avctx->color_range     != AVCOL_RANGE_UNSPECIFIED ||
 357         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 358         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 359         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 360         sps->vui.video_signal_type_present_flag = 1;
 361         sps->vui.video_format      = 5; // Unspecified.
 362         sps->vui.video_full_range_flag =
 363             avctx->color_range == AVCOL_RANGE_JPEG;
 364
 365         if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 366             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 367             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 368             sps->vui.colour_description_present_flag = 1;
 369             sps->vui.colour_primaries         = avctx->color_primaries;
 370             sps->vui.transfer_characteristics = avctx->color_trc;
 371             sps->vui.matrix_coefficients      = avctx->colorspace;
 372         }
 373     } else {
 374         sps->vui.video_format             = 5;
 375         sps->vui.video_full_range_flag    = 0;
 376         sps->vui.colour_primaries         = avctx->color_primaries;
 377         sps->vui.transfer_characteristics = avctx->color_trc;
 378         sps->vui.matrix_coefficients      = avctx->colorspace;
 379     }
 380
 381     if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
 382         sps->vui.chroma_loc_info_present_flag = 1;
 383         sps->vui.chroma_sample_loc_type_top_field    =
 384         sps->vui.chroma_sample_loc_type_bottom_field =
 385             avctx->chroma_sample_location - 1;
 386     }
 387
 388     sps->vui.timing_info_present_flag = 1;
 389     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
 390         sps->vui.num_units_in_tick = avctx->framerate.den;
 391         sps->vui.time_scale        = 2 * avctx->framerate.num;
 392         sps->vui.fixed_frame_rate_flag = 1;
 393     } else {
 394         sps->vui.num_units_in_tick = avctx->time_base.num;
 395         sps->vui.time_scale        = 2 * avctx->time_base.den;
 396         sps->vui.fixed_frame_rate_flag = 0;
 397     }
 398
 399     if (opt->sei & SEI_TIMING) {
 400         H264RawHRD *hrd = &sps->vui.nal_hrd_parameters;
 401
 402         sps->vui.nal_hrd_parameters_present_flag = 1;
 403
 404         hrd->cpb_cnt_minus1 = 0;
 405
 406         // Try to scale these to a sensible range so that the
 407         // golomb encode of the value is not overlong.
 408         hrd->bit_rate_scale =
 409             av_clip_uintp2(av_log2(avctx->bit_rate) - 15 - 6, 4);
 410         hrd->bit_rate_value_minus1[0] =
 411             (avctx->bit_rate >> hrd->bit_rate_scale + 6) - 1;
 412
 413         hrd->cpb_size_scale =
 414             av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4);
 415         hrd->cpb_size_value_minus1[0] =
 416             (ctx->hrd_params.hrd.buffer_size >> hrd->cpb_size_scale + 4) - 1;
 417
 418         // CBR mode as defined for the HRD cannot be achieved without filler
 419         // data, so this flag cannot be set even with VAAPI CBR modes.
 420         hrd->cbr_flag[0] = 0;
 421
 422         hrd->initial_cpb_removal_delay_length_minus1 = 23;
 423         hrd->cpb_removal_delay_length_minus1         = 23;
 424         hrd->dpb_output_delay_length_minus1          = 7;
 425         hrd->time_offset_length                      = 0;
 426
 427         priv->buffering_period.seq_parameter_set_id = sps->seq_parameter_set_id;
 428
 429         // This calculation can easily overflow 32 bits.
 430         priv->buffering_period.nal.initial_cpb_removal_delay[0] = 90000 *
 431             (uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness /
 432             ctx->hrd_params.hrd.buffer_size;
 433         priv->buffering_period.nal.initial_cpb_removal_delay_offset[0] = 0;
 434     } else {
 435         sps->vui.nal_hrd_parameters_present_flag = 0;
 436         sps->vui.low_delay_hrd_flag = 1 - sps->vui.fixed_frame_rate_flag;
 437     }
 438
 439     sps->vui.bitstream_restriction_flag    = 1;
 440     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;
 441     sps->vui.log2_max_mv_length_horizontal = 16;
 442     sps->vui.log2_max_mv_length_vertical   = 16;
 443     sps->vui.max_num_reorder_frames        = (ctx->b_per_p > 0);
 444     sps->vui.max_dec_frame_buffering       = sps->max_num_ref_frames;
 445
 446     pps->nal_unit_header.nal_ref_idc = 3;
 447     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;
 448
 449     pps->pic_parameter_set_id = 0;
 450     pps->seq_parameter_set_id = 0;
 451
 452     pps->entropy_coding_mode_flag =
 453         !(sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 454           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 455           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);
 456     if (!opt->coder && pps->entropy_coding_mode_flag)
 457         pps->entropy_coding_mode_flag = 0;
 458
 459     pps->num_ref_idx_l0_default_active_minus1 = 0;
 460     pps->num_ref_idx_l1_default_active_minus1 = 0;
 461
 462     pps->pic_init_qp_minus26 = priv->fixed_qp_idr - 26;
 463
 464     if (sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 465         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 466         sps->profile_idc == FF_PROFILE_H264_MAIN) {
 467         pps->more_rbsp_data = 0;
 468     } else {
 469         pps->more_rbsp_data = 1;
 470
 471         pps->transform_8x8_mode_flag = 1;
 472     }
 473
 474     *vseq = (VAEncSequenceParameterBufferH264) {
 475         .seq_parameter_set_id = sps->seq_parameter_set_id,
 476         .level_idc        = sps->level_idc,
 477         .intra_period     = avctx->gop_size,
 478         .intra_idr_period = avctx->gop_size,
 479         .ip_period        = ctx->b_per_p + 1,
 480
 481         .bits_per_second       = avctx->bit_rate,
 482         .max_num_ref_frames    = sps->max_num_ref_frames,
 483         .picture_width_in_mbs  = sps->pic_width_in_mbs_minus1 + 1,
 484         .picture_height_in_mbs = sps->pic_height_in_map_units_minus1 + 1,
 485
 486         .seq_fields.bits = {
 487             .chroma_format_idc                 = sps->chroma_format_idc,
 488             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,
 489             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,
 490             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,
 491             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,
 492             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,
 493             .pic_order_cnt_type                = sps->pic_order_cnt_type,
 494             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,
 495             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,
 496         },
 497
 498         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,
 499         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,
 500
 501         .frame_cropping_flag      = sps->frame_cropping_flag,
 502         .frame_crop_left_offset   = sps->frame_crop_left_offset,
 503         .frame_crop_right_offset  = sps->frame_crop_right_offset,
 504         .frame_crop_top_offset    = sps->frame_crop_top_offset,
 505         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,
 506
 507         .vui_parameters_present_flag = sps->vui_parameters_present_flag,
 508
 509         .vui_fields.bits = {
 510             .aspect_ratio_info_present_flag = sps->vui.aspect_ratio_info_present_flag,
 511             .timing_info_present_flag       = sps->vui.timing_info_present_flag,
 512             .bitstream_restriction_flag     = sps->vui.bitstream_restriction_flag,
 513             .log2_max_mv_length_horizontal  = sps->vui.log2_max_mv_length_horizontal,
 514             .log2_max_mv_length_vertical    = sps->vui.log2_max_mv_length_vertical,
 515         },
 516
 517         .aspect_ratio_idc  = sps->vui.aspect_ratio_idc,
 518         .sar_width         = sps->vui.sar_width,
 519         .sar_height        = sps->vui.sar_height,
 520         .num_units_in_tick = sps->vui.num_units_in_tick,
 521         .time_scale        = sps->vui.time_scale,
 522     };
 523
 524     *vpic = (VAEncPictureParameterBufferH264) {
 525         .CurrPic = {
 526             .picture_id = VA_INVALID_ID,
 527             .flags      = VA_PICTURE_H264_INVALID,
 528         },
 529
 530         .coded_buf = VA_INVALID_ID,
 531
 532         .pic_parameter_set_id = pps->pic_parameter_set_id,
 533         .seq_parameter_set_id = pps->seq_parameter_set_id,
 534
 535         .pic_init_qp                  = pps->pic_init_qp_minus26 + 26,
 536         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,
 537         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,
 538
 539         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,
 540         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,
 541
 542         .pic_fields.bits = {
 543             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,
 544             .weighted_pred_flag              = pps->weighted_pred_flag,
 545             .weighted_bipred_idc             = pps->weighted_bipred_idc,
 546             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,
 547             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,
 548             .deblocking_filter_control_present_flag =
 549                 pps->deblocking_filter_control_present_flag,
 550             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,
 551             .pic_order_present_flag          =
 552                 pps->bottom_field_pic_order_in_frame_present_flag,
 553             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,
 554         },
 555     };
 556
 557     return 0;
 558 }
 559
 560 static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
 561                                                  VAAPIEncodePicture *pic)
 562 {
 563     VAAPIEncodeContext               *ctx = avctx->priv_data;
 564     VAAPIEncodeH264Context          *priv = ctx->priv_data;
 565     VAAPIEncodeH264Options           *opt = ctx->codec_options;
 566     H264RawSPS                       *sps = &priv->sps;
 567     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 568     int i;
 569
 570     memset(&priv->current_access_unit, 0,
 571            sizeof(priv->current_access_unit));
 572
 573     if (pic->type == PICTURE_TYPE_IDR) {
 574         av_assert0(pic->display_order == pic->encode_order);
 575         priv->frame_num      = 0;
 576         priv->next_frame_num = 1;
 577         priv->cpb_delay      = 0;
 578         priv->last_idr_frame = pic->display_order;
 579         ++priv->idr_pic_count;
 580
 581         priv->slice_type       = 7;
 582         priv->primary_pic_type = 0;
 583     } else {
 584         priv->frame_num      = priv->next_frame_num;
 585
 586         if (pic->type != PICTURE_TYPE_B) {
 587             // Reference picture, so frame_num advances.
 588             priv->next_frame_num = (priv->frame_num + 1) &
 589                 ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
 590         }
 591         ++priv->cpb_delay;
 592
 593         if (pic->type == PICTURE_TYPE_I) {
 594             priv->slice_type       = 7;
 595             priv->primary_pic_type = 0;
 596         } else if (pic->type == PICTURE_TYPE_P) {
 597             priv->slice_type       = 5;
 598             priv->primary_pic_type = 1;
 599         } else {
 600             priv->slice_type       = 6;
 601             priv->primary_pic_type = 2;
 602         }
 603     }
 604     priv->pic_order_cnt = pic->display_order - priv->last_idr_frame;
 605     priv->dpb_delay     = pic->display_order - pic->encode_order + 1;
 606
 607     if (opt->aud) {
 608         priv->aud_needed = 1;
 609         priv->aud.nal_unit_header.nal_unit_type = H264_NAL_AUD;
 610         priv->aud.primary_pic_type = priv->primary_pic_type;
 611     } else {
 612         priv->aud_needed = 0;
 613     }
 614
 615     if (opt->sei & SEI_IDENTIFIER && pic->encode_order == 0)
 616         priv->sei_needed = 1;
 617
 618     if (opt->sei & SEI_TIMING) {
 619         memset(&priv->pic_timing, 0, sizeof(priv->pic_timing));
 620
 621         priv->pic_timing.cpb_removal_delay = 2 * priv->cpb_delay;
 622         priv->pic_timing.dpb_output_delay  = 2 * priv->dpb_delay;
 623
 624         priv->sei_needed = 1;
 625     }
 626
 627     if (opt->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) {
 628         priv->recovery_point.recovery_frame_cnt = 0;
 629         priv->recovery_point.exact_match_flag   = 1;
 630         priv->recovery_point.broken_link_flag   = ctx->b_per_p > 0;
 631
 632         priv->sei_needed = 1;
 633     }
 634
 635     vpic->CurrPic = (VAPictureH264) {
 636         .picture_id          = pic->recon_surface,
 637         .frame_idx           = priv->frame_num,
 638         .flags               = 0,
 639         .TopFieldOrderCnt    = priv->pic_order_cnt,
 640         .BottomFieldOrderCnt = priv->pic_order_cnt,
 641     };
 642
 643     for (i = 0; i < pic->nb_refs; i++) {
 644         VAAPIEncodePicture *ref = pic->refs[i];
 645         unsigned int frame_num = (ref->encode_order - priv->last_idr_frame) &
 646             ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
 647         unsigned int pic_order_cnt = ref->display_order - priv->last_idr_frame;
 648
 649         av_assert0(ref && ref->encode_order < pic->encode_order);
 650         vpic->ReferenceFrames[i] = (VAPictureH264) {
 651             .picture_id          = ref->recon_surface,
 652             .frame_idx           = frame_num,
 653             .flags               = VA_PICTURE_H264_SHORT_TERM_REFERENCE,
 654             .TopFieldOrderCnt    = pic_order_cnt,
 655             .BottomFieldOrderCnt = pic_order_cnt,
 656         };
 657     }
 658     for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
 659         vpic->ReferenceFrames[i] = (VAPictureH264) {
 660             .picture_id = VA_INVALID_ID,
 661             .flags      = VA_PICTURE_H264_INVALID,
 662         };
 663     }
 664
 665     vpic->coded_buf = pic->output_buffer;
 666
 667     vpic->frame_num = priv->frame_num;
 668
 669     vpic->pic_fields.bits.idr_pic_flag       = (pic->type == PICTURE_TYPE_IDR);
 670     vpic->pic_fields.bits.reference_pic_flag = (pic->type != PICTURE_TYPE_B);
 671
 672     pic->nb_slices = 1;
 673
 674     return 0;
 675 }
 676
 677 static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,
 678                                                VAAPIEncodePicture *pic,
 679                                                VAAPIEncodeSlice *slice)
 680 {
 681     VAAPIEncodeContext               *ctx = avctx->priv_data;
 682     VAAPIEncodeH264Context          *priv = ctx->priv_data;
 683     H264RawSPS                       *sps = &priv->sps;
 684     H264RawPPS                       *pps = &priv->pps;
 685     H264RawSliceHeader                *sh = &priv->slice.header;
 686     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 687     VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
 688     int i;
 689
 690     if (pic->type == PICTURE_TYPE_IDR) {
 691         sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;
 692         sh->nal_unit_header.nal_ref_idc   = 3;
 693     } else {
 694         sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;
 695         sh->nal_unit_header.nal_ref_idc   = pic->type != PICTURE_TYPE_B;
 696     }
 697
 698     // Only one slice per frame.
 699     sh->first_mb_in_slice = 0;
 700     sh->slice_type        = priv->slice_type;
 701
 702     sh->pic_parameter_set_id = pps->pic_parameter_set_id;
 703
 704     sh->frame_num  = priv->frame_num;
 705     sh->idr_pic_id = priv->idr_pic_count;
 706
 707     sh->pic_order_cnt_lsb = priv->pic_order_cnt &
 708         ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);
 709
 710     sh->direct_spatial_mv_pred_flag = 1;
 711
 712     if (pic->type == PICTURE_TYPE_B)
 713         sh->slice_qp_delta = priv->fixed_qp_b - (pps->pic_init_qp_minus26 + 26);
 714     else if (pic->type == PICTURE_TYPE_P)
 715         sh->slice_qp_delta = priv->fixed_qp_p - (pps->pic_init_qp_minus26 + 26);
 716     else
 717         sh->slice_qp_delta = priv->fixed_qp_idr - (pps->pic_init_qp_minus26 + 26);
 718
 719
 720     vslice->macroblock_address = sh->first_mb_in_slice;
 721     vslice->num_macroblocks    = priv->mb_width * priv->mb_height;
 722
 723     vslice->macroblock_info = VA_INVALID_ID;
 724
 725     vslice->slice_type           = sh->slice_type % 5;
 726     vslice->pic_parameter_set_id = sh->pic_parameter_set_id;
 727     vslice->idr_pic_id           = sh->idr_pic_id;
 728
 729     vslice->pic_order_cnt_lsb = sh->pic_order_cnt_lsb;
 730
 731     vslice->direct_spatial_mv_pred_flag = sh->direct_spatial_mv_pred_flag;
 732
 733     for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {
 734         vslice->RefPicList0[i].picture_id = VA_INVALID_ID;
 735         vslice->RefPicList0[i].flags      = VA_PICTURE_H264_INVALID;
 736         vslice->RefPicList1[i].picture_id = VA_INVALID_ID;
 737         vslice->RefPicList1[i].flags      = VA_PICTURE_H264_INVALID;
 738     }
 739
 740     av_assert0(pic->nb_refs <= 2);
 741     if (pic->nb_refs >= 1) {
 742         // Backward reference for P- or B-frame.
 743         av_assert0(pic->type == PICTURE_TYPE_P ||
 744                    pic->type == PICTURE_TYPE_B);
 745         vslice->RefPicList0[0] = vpic->ReferenceFrames[0];
 746     }
 747     if (pic->nb_refs >= 2) {
 748         // Forward reference for B-frame.
 749         av_assert0(pic->type == PICTURE_TYPE_B);
 750         vslice->RefPicList1[0] = vpic->ReferenceFrames[1];
 751     }
 752
 753     vslice->slice_qp_delta = sh->slice_qp_delta;
 754
 755     return 0;
 756 }
 757
 758 static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)
 759 {
 760     VAAPIEncodeContext      *ctx = avctx->priv_data;
 761     VAAPIEncodeH264Context *priv = ctx->priv_data;
 762     VAAPIEncodeH264Options  *opt = ctx->codec_options;
 763     int err;
 764
 765     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_H264, avctx);
 766     if (err < 0)
 767         return err;
 768
 769     priv->mb_width  = FFALIGN(avctx->width,  16) / 16;
 770     priv->mb_height = FFALIGN(avctx->height, 16) / 16;
 771
 772     if (ctx->va_rc_mode == VA_RC_CQP) {
 773         priv->fixed_qp_p = opt->qp;
 774         if (avctx->i_quant_factor > 0.0)
 775             priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +
 776                                         avctx->i_quant_offset) + 0.5);
 777         else
 778             priv->fixed_qp_idr = priv->fixed_qp_p;
 779         if (avctx->b_quant_factor > 0.0)
 780             priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +
 781                                       avctx->b_quant_offset) + 0.5);
 782         else
 783             priv->fixed_qp_b = priv->fixed_qp_p;
 784
 785         opt->sei &= ~SEI_TIMING;
 786
 787         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
 788                "%d / %d / %d for IDR- / P- / B-frames.\n",
 789                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
 790
 791     } else if (ctx->va_rc_mode == VA_RC_CBR ||
 792                ctx->va_rc_mode == VA_RC_VBR) {
 793         // These still need to be  set for pic_init_qp/slice_qp_delta.
 794         priv->fixed_qp_idr = 26;
 795         priv->fixed_qp_p   = 26;
 796         priv->fixed_qp_b   = 26;
 797
 798         av_log(avctx, AV_LOG_DEBUG, "Using %s-bitrate = %"PRId64" bps.\n",
 799                ctx->va_rc_mode == VA_RC_CBR ? "constant" : "variable",
 800                avctx->bit_rate);
 801
 802     } else {
 803         av_assert0(0 && "Invalid RC mode.");
 804     }
 805
 806     if (avctx->compression_level == FF_COMPRESSION_DEFAULT)
 807         avctx->compression_level = opt->quality;
 808
 809     if (opt->sei & SEI_IDENTIFIER) {
 810         const char *lavc  = LIBAVCODEC_IDENT;
 811         const char *vaapi = VA_VERSION_S;
 812         const char *driver;
 813         int len;
 814
 815         memcpy(priv->identifier.uuid_iso_iec_11578,
 816                vaapi_encode_h264_sei_identifier_uuid,
 817                sizeof(priv->identifier.uuid_iso_iec_11578));
 818
 819         driver = vaQueryVendorString(ctx->hwctx->display);
 820         if (!driver)
 821             driver = "unknown driver";
 822
 823         len = snprintf(NULL, 0, "%s / VAAPI %s / %s", lavc, vaapi, driver);
 824         if (len >= 0) {
 825             priv->identifier_string = av_malloc(len + 1);
 826             if (!priv->identifier_string)
 827                 return AVERROR(ENOMEM);
 828
 829             snprintf(priv->identifier_string, len + 1,
 830                      "%s / VAAPI %s / %s", lavc, vaapi, driver);
 831
 832             priv->identifier.data = priv->identifier_string;
 833             priv->identifier.data_length = len + 1;
 834         }
 835     }
 836
 837     return 0;
 838 }
 839
 840 static const VAAPIEncodeType vaapi_encode_type_h264 = {
 841     .priv_data_size        = sizeof(VAAPIEncodeH264Context),
 842
 843     .configure             = &vaapi_encode_h264_configure,
 844
 845     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),
 846     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,
 847
 848     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),
 849     .init_picture_params   = &vaapi_encode_h264_init_picture_params,
 850
 851     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),
 852     .init_slice_params     = &vaapi_encode_h264_init_slice_params,
 853
 854     .sequence_header_type  = VAEncPackedHeaderSequence,
 855     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,
 856
 857     .slice_header_type     = VAEncPackedHeaderH264_Slice,
 858     .write_slice_header    = &vaapi_encode_h264_write_slice_header,
 859
 860     .write_extra_header    = &vaapi_encode_h264_write_extra_header,
 861 };
 862
 863 static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
 864 {
 865     VAAPIEncodeContext     *ctx = avctx->priv_data;
 866     VAAPIEncodeH264Options *opt =
 867         (VAAPIEncodeH264Options*)ctx->codec_options_data;
 868
 869     ctx->codec = &vaapi_encode_type_h264;
 870
 871     switch (avctx->profile) {
 872     case FF_PROFILE_H264_BASELINE:
 873         av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile is not "
 874                "supported, using constrained baseline profile instead.\n");
 875         avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;
 876     case FF_PROFILE_H264_CONSTRAINED_BASELINE:
 877         ctx->va_profile = VAProfileH264ConstrainedBaseline;
 878         if (avctx->max_b_frames != 0) {
 879             avctx->max_b_frames = 0;
 880             av_log(avctx, AV_LOG_WARNING, "H.264 constrained baseline profile "
 881                    "doesn't support encoding with B frames, disabling them.\n");
 882         }
 883         break;
 884     case FF_PROFILE_H264_MAIN:
 885         ctx->va_profile = VAProfileH264Main;
 886         break;
 887     case FF_PROFILE_H264_EXTENDED:
 888         av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "
 889                "is not supported.\n");
 890         return AVERROR_PATCHWELCOME;
 891     case FF_PROFILE_UNKNOWN:
 892     case FF_PROFILE_H264_HIGH:
 893         ctx->va_profile = VAProfileH264High;
 894         break;
 895     case FF_PROFILE_H264_HIGH_10:
 896     case FF_PROFILE_H264_HIGH_10_INTRA:
 897         av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "
 898                "are not supported.\n");
 899         return AVERROR_PATCHWELCOME;
 900     case FF_PROFILE_H264_HIGH_422:
 901     case FF_PROFILE_H264_HIGH_422_INTRA:
 902     case FF_PROFILE_H264_HIGH_444:
 903     case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
 904     case FF_PROFILE_H264_HIGH_444_INTRA:
 905     case FF_PROFILE_H264_CAVLC_444:
 906         av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "
 907                "are not supported.\n");
 908         return AVERROR_PATCHWELCOME;
 909     default:
 910         av_log(avctx, AV_LOG_ERROR, "Unknown H.264 profile %d.\n",
 911                avctx->profile);
 912         return AVERROR(EINVAL);
 913     }
 914     if (opt->low_power) {
 915 #if VA_CHECK_VERSION(0, 39, 2)
 916         ctx->va_entrypoint = VAEntrypointEncSliceLP;
 917 #else
 918         av_log(avctx, AV_LOG_ERROR, "Low-power encoding is not "
 919                "supported with this VAAPI version.\n");
 920         return AVERROR(EINVAL);
 921 #endif
 922     } else {
 923         ctx->va_entrypoint = VAEntrypointEncSlice;
 924     }
 925
 926     // Only 8-bit encode is supported.
 927     ctx->va_rt_format = VA_RT_FORMAT_YUV420;
 928
 929     if (avctx->bit_rate > 0) {
 930         if (avctx->rc_max_rate == avctx->bit_rate)
 931             ctx->va_rc_mode = VA_RC_CBR;
 932         else
 933             ctx->va_rc_mode = VA_RC_VBR;
 934     } else
 935         ctx->va_rc_mode = VA_RC_CQP;
 936
 937     ctx->va_packed_headers =
 938         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.
 939         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.
 940         VA_ENC_PACKED_HEADER_MISC;      // SEI.
 941
 942     ctx->surface_width  = FFALIGN(avctx->width,  16);
 943     ctx->surface_height = FFALIGN(avctx->height, 16);
 944
 945     return ff_vaapi_encode_init(avctx);
 946 }
 947
 948 static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)
 949 {
 950     VAAPIEncodeContext *ctx = avctx->priv_data;
 951     VAAPIEncodeH264Context *priv = ctx->priv_data;
 952
 953     if (priv) {
 954         ff_cbs_close(&priv->cbc);
 955         av_freep(&priv->identifier_string);
 956     }
 957
 958     return ff_vaapi_encode_close(avctx);
 959 }
 960
 961 #define OFFSET(x) (offsetof(VAAPIEncodeContext, codec_options_data) + \
 962                    offsetof(VAAPIEncodeH264Options, x))
 963 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 964 static const AVOption vaapi_encode_h264_options[] = {
 965     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
 966       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },
 967     { "quality", "Set encode quality (trades off against speed, higher is faster)",
 968       OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8, FLAGS },
 969     { "low_power", "Use low-power encoding mode (experimental: only supported "
 970       "on some platforms, does not support all features)",
 971       OFFSET(low_power), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
 972     { "coder", "Entropy coder type",
 973       OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },
 974         { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
 975         { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
 976         { "vlc",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
 977         { "ac",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
 978
 979     { "aud", "Include AUD",
 980       OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
 981
 982     { "sei", "Set SEI to include",
 983       OFFSET(sei), AV_OPT_TYPE_FLAGS,
 984       { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },
 985       0, INT_MAX, FLAGS, "sei" },
 986     { "identifier", "Include encoder version identifier",
 987       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },
 988       INT_MIN, INT_MAX, FLAGS, "sei" },
 989     { "timing", "Include timing parameters (buffering_period and pic_timing)",
 990       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },
 991       INT_MIN, INT_MAX, FLAGS, "sei" },
 992     { "recovery_point", "Include recovery points where appropriate",
 993       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },
 994       INT_MIN, INT_MAX, FLAGS, "sei" },
 995     { NULL },
 996 };
 997
 998 static const AVCodecDefault vaapi_encode_h264_defaults[] = {
 999     { "profile",        "100" },
1000     { "level",          "51"  },
1001     { "b",              "0"   },
1002     { "bf",             "2"   },
1003     { "g",              "120" },
1004     { "i_qfactor",      "1"   },
1005     { "i_qoffset",      "0"   },
1006     { "b_qfactor",      "6/5" },
1007     { "b_qoffset",      "0"   },
1008     { "qmin",           "0"   },
1009     { NULL },
1010 };
1011
1012 static const AVClass vaapi_encode_h264_class = {
1013     .class_name = "h264_vaapi",
1014     .item_name  = av_default_item_name,
1015     .option     = vaapi_encode_h264_options,
1016     .version    = LIBAVUTIL_VERSION_INT,
1017 };
1018
1019 AVCodec ff_h264_vaapi_encoder = {
1020     .name           = "h264_vaapi",
1021     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),
1022     .type           = AVMEDIA_TYPE_VIDEO,
1023     .id             = AV_CODEC_ID_H264,
1024     .priv_data_size = (sizeof(VAAPIEncodeContext) +
1025                        sizeof(VAAPIEncodeH264Options)),
1026     .init           = &vaapi_encode_h264_init,
1027     .encode2        = &ff_vaapi_encode2,
1028     .close          = &vaapi_encode_h264_close,
1029     .priv_class     = &vaapi_encode_h264_class,
1030     .capabilities   = AV_CODEC_CAP_DELAY,
1031     .defaults       = vaapi_encode_h264_defaults,
1032     .pix_fmts = (const enum AVPixelFormat[]) {
1033         AV_PIX_FMT_VAAPI,
1034         AV_PIX_FMT_NONE,
1035     },
1036 };