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     int sei_cbr_workaround_needed;
  86 } VAAPIEncodeH264Context;
  87
  88 typedef struct VAAPIEncodeH264Options {
  89     int qp;
  90     int quality;
  91     int low_power;
  92     // Entropy encoder type.
  93     int coder;
  94     int aud;
  95     int sei;
  96     int profile;
  97     int level;
  98 } VAAPIEncodeH264Options;
  99
 100
 101 static int vaapi_encode_h264_write_access_unit(AVCodecContext *avctx,
 102                                                char *data, size_t *data_len,
 103                                                CodedBitstreamFragment *au)
 104 {
 105     VAAPIEncodeContext      *ctx = avctx->priv_data;
 106     VAAPIEncodeH264Context *priv = ctx->priv_data;
 107     int err;
 108
 109     err = ff_cbs_write_fragment_data(priv->cbc, au);
 110     if (err < 0) {
 111         av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
 112         return err;
 113     }
 114
 115     if (*data_len < 8 * au->data_size - au->data_bit_padding) {
 116         av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
 117                "%zu < %zu.\n", *data_len,
 118                8 * au->data_size - au->data_bit_padding);
 119         return AVERROR(ENOSPC);
 120     }
 121
 122     memcpy(data, au->data, au->data_size);
 123     *data_len = 8 * au->data_size - au->data_bit_padding;
 124
 125     return 0;
 126 }
 127
 128 static int vaapi_encode_h264_add_nal(AVCodecContext *avctx,
 129                                      CodedBitstreamFragment *au,
 130                                      void *nal_unit)
 131 {
 132     VAAPIEncodeContext      *ctx = avctx->priv_data;
 133     VAAPIEncodeH264Context *priv = ctx->priv_data;
 134     H264RawNALUnitHeader *header = nal_unit;
 135     int err;
 136
 137     err = ff_cbs_insert_unit_content(priv->cbc, au, -1,
 138                                      header->nal_unit_type, nal_unit, NULL);
 139     if (err < 0) {
 140         av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: "
 141                "type = %d.\n", header->nal_unit_type);
 142         return err;
 143     }
 144
 145     return 0;
 146 }
 147
 148 static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,
 149                                                    char *data, size_t *data_len)
 150 {
 151     VAAPIEncodeContext      *ctx = avctx->priv_data;
 152     VAAPIEncodeH264Context *priv = ctx->priv_data;
 153     CodedBitstreamFragment   *au = &priv->current_access_unit;
 154     int err;
 155
 156     if (priv->aud_needed) {
 157         err = vaapi_encode_h264_add_nal(avctx, au, &priv->aud);
 158         if (err < 0)
 159             goto fail;
 160         priv->aud_needed = 0;
 161     }
 162
 163     err = vaapi_encode_h264_add_nal(avctx, au, &priv->sps);
 164     if (err < 0)
 165         goto fail;
 166
 167     err = vaapi_encode_h264_add_nal(avctx, au, &priv->pps);
 168     if (err < 0)
 169         goto fail;
 170
 171     err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 172 fail:
 173     ff_cbs_fragment_uninit(priv->cbc, au);
 174     return err;
 175 }
 176
 177 static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,
 178                                                 VAAPIEncodePicture *pic,
 179                                                 VAAPIEncodeSlice *slice,
 180                                                 char *data, size_t *data_len)
 181 {
 182     VAAPIEncodeContext      *ctx = avctx->priv_data;
 183     VAAPIEncodeH264Context *priv = ctx->priv_data;
 184     CodedBitstreamFragment   *au = &priv->current_access_unit;
 185     int err;
 186
 187     if (priv->aud_needed) {
 188         err = vaapi_encode_h264_add_nal(avctx, au, &priv->aud);
 189         if (err < 0)
 190             goto fail;
 191         priv->aud_needed = 0;
 192     }
 193
 194     err = vaapi_encode_h264_add_nal(avctx, au, &priv->slice);
 195     if (err < 0)
 196         goto fail;
 197
 198     err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 199 fail:
 200     ff_cbs_fragment_uninit(priv->cbc, au);
 201     return err;
 202 }
 203
 204 static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,
 205                                                 VAAPIEncodePicture *pic,
 206                                                 int index, int *type,
 207                                                 char *data, size_t *data_len)
 208 {
 209     VAAPIEncodeContext      *ctx = avctx->priv_data;
 210     VAAPIEncodeH264Context *priv = ctx->priv_data;
 211     CodedBitstreamFragment   *au = &priv->current_access_unit;
 212     int err, i;
 213
 214     if (priv->sei_needed) {
 215         if (priv->aud_needed) {
 216             err = vaapi_encode_h264_add_nal(avctx, au, &priv->aud);
 217             if (err < 0)
 218                 goto fail;
 219             priv->aud_needed = 0;
 220         }
 221
 222         memset(&priv->sei, 0, sizeof(priv->sei));
 223         priv->sei.nal_unit_header.nal_unit_type = H264_NAL_SEI;
 224
 225         i = 0;
 226         if (priv->sei_needed & SEI_IDENTIFIER) {
 227             priv->sei.payload[i].payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED;
 228             priv->sei.payload[i].payload.user_data_unregistered = priv->identifier;
 229             ++i;
 230         }
 231         if (priv->sei_needed & SEI_TIMING) {
 232             if (pic->type == PICTURE_TYPE_IDR) {
 233                 priv->sei.payload[i].payload_type = H264_SEI_TYPE_BUFFERING_PERIOD;
 234                 priv->sei.payload[i].payload.buffering_period = priv->buffering_period;
 235                 ++i;
 236             }
 237             priv->sei.payload[i].payload_type = H264_SEI_TYPE_PIC_TIMING;
 238             priv->sei.payload[i].payload.pic_timing = priv->pic_timing;
 239             ++i;
 240         }
 241         if (priv->sei_needed & SEI_RECOVERY_POINT) {
 242             priv->sei.payload[i].payload_type = H264_SEI_TYPE_RECOVERY_POINT;
 243             priv->sei.payload[i].payload.recovery_point = priv->recovery_point;
 244             ++i;
 245         }
 246
 247         priv->sei.payload_count = i;
 248         av_assert0(priv->sei.payload_count > 0);
 249
 250         err = vaapi_encode_h264_add_nal(avctx, au, &priv->sei);
 251         if (err < 0)
 252             goto fail;
 253         priv->sei_needed = 0;
 254
 255         err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 256         if (err < 0)
 257             goto fail;
 258
 259         ff_cbs_fragment_uninit(priv->cbc, au);
 260
 261         *type = VAEncPackedHeaderRawData;
 262         return 0;
 263
 264 #if !CONFIG_VAAPI_1
 265     } else if (priv->sei_cbr_workaround_needed) {
 266         // Insert a zero-length header using the old SEI type.  This is
 267         // required to avoid triggering broken behaviour on Intel platforms
 268         // in CBR mode where an invalid SEI message is generated by the
 269         // driver and inserted into the stream.
 270         *data_len = 0;
 271         *type = VAEncPackedHeaderH264_SEI;
 272         priv->sei_cbr_workaround_needed = 0;
 273         return 0;
 274 #endif
 275
 276     } else {
 277         return AVERROR_EOF;
 278     }
 279
 280 fail:
 281     ff_cbs_fragment_uninit(priv->cbc, au);
 282     return err;
 283 }
 284
 285 static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
 286 {
 287     VAAPIEncodeContext                *ctx = avctx->priv_data;
 288     VAAPIEncodeH264Context           *priv = ctx->priv_data;
 289     VAAPIEncodeH264Options            *opt = ctx->codec_options;
 290     H264RawSPS                        *sps = &priv->sps;
 291     H264RawPPS                        *pps = &priv->pps;
 292     VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
 293     VAEncPictureParameterBufferH264  *vpic = ctx->codec_picture_params;
 294
 295     memset(&priv->current_access_unit, 0,
 296            sizeof(priv->current_access_unit));
 297
 298     memset(sps, 0, sizeof(*sps));
 299     memset(pps, 0, sizeof(*pps));
 300
 301     sps->nal_unit_header.nal_ref_idc   = 3;
 302     sps->nal_unit_header.nal_unit_type = H264_NAL_SPS;
 303
 304     sps->profile_idc = avctx->profile & 0xff;
 305     sps->constraint_set1_flag =
 306         !!(avctx->profile & FF_PROFILE_H264_CONSTRAINED);
 307     sps->constraint_set3_flag =
 308         !!(avctx->profile & FF_PROFILE_H264_INTRA);
 309
 310     sps->level_idc = avctx->level;
 311
 312     sps->seq_parameter_set_id = 0;
 313     sps->chroma_format_idc    = 1;
 314
 315     sps->log2_max_frame_num_minus4 = 4;
 316     sps->pic_order_cnt_type        = 0;
 317     sps->log2_max_pic_order_cnt_lsb_minus4 =
 318         av_clip(av_log2(ctx->b_per_p + 1) - 2, 0, 12);
 319
 320     sps->max_num_ref_frames =
 321         (avctx->profile & FF_PROFILE_H264_INTRA) ? 0 :
 322         1 + (ctx->b_per_p > 0);
 323
 324     sps->pic_width_in_mbs_minus1        = priv->mb_width  - 1;
 325     sps->pic_height_in_map_units_minus1 = priv->mb_height - 1;
 326
 327     sps->frame_mbs_only_flag = 1;
 328     sps->direct_8x8_inference_flag = 1;
 329
 330     if (avctx->width  != 16 * priv->mb_width ||
 331         avctx->height != 16 * priv->mb_height) {
 332         sps->frame_cropping_flag = 1;
 333
 334         sps->frame_crop_left_offset   = 0;
 335         sps->frame_crop_right_offset  =
 336             (16 * priv->mb_width - avctx->width) / 2;
 337         sps->frame_crop_top_offset    = 0;
 338         sps->frame_crop_bottom_offset =
 339             (16 * priv->mb_height - avctx->height) / 2;
 340     } else {
 341         sps->frame_cropping_flag = 0;
 342     }
 343
 344     sps->vui_parameters_present_flag = 1;
 345
 346     if (avctx->sample_aspect_ratio.num != 0 &&
 347         avctx->sample_aspect_ratio.den != 0) {
 348         static const AVRational sar_idc[] = {
 349             {   0,  0 },
 350             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },
 351             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },
 352             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },
 353             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },
 354         };
 355         int i;
 356         for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) {
 357             if (avctx->sample_aspect_ratio.num == sar_idc[i].num &&
 358                 avctx->sample_aspect_ratio.den == sar_idc[i].den) {
 359                 sps->vui.aspect_ratio_idc = i;
 360                 break;
 361             }
 362         }
 363         if (i >= FF_ARRAY_ELEMS(sar_idc)) {
 364             sps->vui.aspect_ratio_idc = 255;
 365             sps->vui.sar_width  = avctx->sample_aspect_ratio.num;
 366             sps->vui.sar_height = avctx->sample_aspect_ratio.den;
 367         }
 368         sps->vui.aspect_ratio_info_present_flag = 1;
 369     }
 370
 371     if (avctx->color_range     != AVCOL_RANGE_UNSPECIFIED ||
 372         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 373         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 374         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 375         sps->vui.video_signal_type_present_flag = 1;
 376         sps->vui.video_format      = 5; // Unspecified.
 377         sps->vui.video_full_range_flag =
 378             avctx->color_range == AVCOL_RANGE_JPEG;
 379
 380         if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 381             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 382             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 383             sps->vui.colour_description_present_flag = 1;
 384             sps->vui.colour_primaries         = avctx->color_primaries;
 385             sps->vui.transfer_characteristics = avctx->color_trc;
 386             sps->vui.matrix_coefficients      = avctx->colorspace;
 387         }
 388     } else {
 389         sps->vui.video_format             = 5;
 390         sps->vui.video_full_range_flag    = 0;
 391         sps->vui.colour_primaries         = avctx->color_primaries;
 392         sps->vui.transfer_characteristics = avctx->color_trc;
 393         sps->vui.matrix_coefficients      = avctx->colorspace;
 394     }
 395
 396     if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
 397         sps->vui.chroma_loc_info_present_flag = 1;
 398         sps->vui.chroma_sample_loc_type_top_field    =
 399         sps->vui.chroma_sample_loc_type_bottom_field =
 400             avctx->chroma_sample_location - 1;
 401     }
 402
 403     sps->vui.timing_info_present_flag = 1;
 404     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
 405         sps->vui.num_units_in_tick = avctx->framerate.den;
 406         sps->vui.time_scale        = 2 * avctx->framerate.num;
 407         sps->vui.fixed_frame_rate_flag = 1;
 408     } else {
 409         sps->vui.num_units_in_tick = avctx->time_base.num;
 410         sps->vui.time_scale        = 2 * avctx->time_base.den;
 411         sps->vui.fixed_frame_rate_flag = 0;
 412     }
 413
 414     if (opt->sei & SEI_TIMING) {
 415         H264RawHRD *hrd = &sps->vui.nal_hrd_parameters;
 416
 417         sps->vui.nal_hrd_parameters_present_flag = 1;
 418
 419         hrd->cpb_cnt_minus1 = 0;
 420
 421         // Try to scale these to a sensible range so that the
 422         // golomb encode of the value is not overlong.
 423         hrd->bit_rate_scale =
 424             av_clip_uintp2(av_log2(avctx->bit_rate) - 15 - 6, 4);
 425         hrd->bit_rate_value_minus1[0] =
 426             (avctx->bit_rate >> hrd->bit_rate_scale + 6) - 1;
 427
 428         hrd->cpb_size_scale =
 429             av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4);
 430         hrd->cpb_size_value_minus1[0] =
 431             (ctx->hrd_params.hrd.buffer_size >> hrd->cpb_size_scale + 4) - 1;
 432
 433         // CBR mode as defined for the HRD cannot be achieved without filler
 434         // data, so this flag cannot be set even with VAAPI CBR modes.
 435         hrd->cbr_flag[0] = 0;
 436
 437         hrd->initial_cpb_removal_delay_length_minus1 = 23;
 438         hrd->cpb_removal_delay_length_minus1         = 23;
 439         hrd->dpb_output_delay_length_minus1          = 7;
 440         hrd->time_offset_length                      = 0;
 441
 442         priv->buffering_period.seq_parameter_set_id = sps->seq_parameter_set_id;
 443
 444         // This calculation can easily overflow 32 bits.
 445         priv->buffering_period.nal.initial_cpb_removal_delay[0] = 90000 *
 446             (uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness /
 447             ctx->hrd_params.hrd.buffer_size;
 448         priv->buffering_period.nal.initial_cpb_removal_delay_offset[0] = 0;
 449     } else {
 450         sps->vui.nal_hrd_parameters_present_flag = 0;
 451         sps->vui.low_delay_hrd_flag = 1 - sps->vui.fixed_frame_rate_flag;
 452     }
 453
 454     sps->vui.bitstream_restriction_flag    = 1;
 455     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;
 456     sps->vui.log2_max_mv_length_horizontal = 16;
 457     sps->vui.log2_max_mv_length_vertical   = 16;
 458     sps->vui.max_num_reorder_frames        = (ctx->b_per_p > 0);
 459     sps->vui.max_dec_frame_buffering       = sps->max_num_ref_frames;
 460
 461     pps->nal_unit_header.nal_ref_idc = 3;
 462     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;
 463
 464     pps->pic_parameter_set_id = 0;
 465     pps->seq_parameter_set_id = 0;
 466
 467     pps->entropy_coding_mode_flag =
 468         !(sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 469           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 470           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);
 471     if (!opt->coder && pps->entropy_coding_mode_flag)
 472         pps->entropy_coding_mode_flag = 0;
 473
 474     pps->num_ref_idx_l0_default_active_minus1 = 0;
 475     pps->num_ref_idx_l1_default_active_minus1 = 0;
 476
 477     pps->pic_init_qp_minus26 = priv->fixed_qp_idr - 26;
 478
 479     if (sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 480         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 481         sps->profile_idc == FF_PROFILE_H264_MAIN) {
 482         pps->more_rbsp_data = 0;
 483     } else {
 484         pps->more_rbsp_data = 1;
 485
 486         pps->transform_8x8_mode_flag = 1;
 487     }
 488
 489     *vseq = (VAEncSequenceParameterBufferH264) {
 490         .seq_parameter_set_id = sps->seq_parameter_set_id,
 491         .level_idc        = sps->level_idc,
 492         .intra_period     = avctx->gop_size,
 493         .intra_idr_period = avctx->gop_size,
 494         .ip_period        = ctx->b_per_p + 1,
 495
 496         .bits_per_second       = avctx->bit_rate,
 497         .max_num_ref_frames    = sps->max_num_ref_frames,
 498         .picture_width_in_mbs  = sps->pic_width_in_mbs_minus1 + 1,
 499         .picture_height_in_mbs = sps->pic_height_in_map_units_minus1 + 1,
 500
 501         .seq_fields.bits = {
 502             .chroma_format_idc                 = sps->chroma_format_idc,
 503             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,
 504             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,
 505             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,
 506             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,
 507             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,
 508             .pic_order_cnt_type                = sps->pic_order_cnt_type,
 509             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,
 510             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,
 511         },
 512
 513         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,
 514         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,
 515
 516         .frame_cropping_flag      = sps->frame_cropping_flag,
 517         .frame_crop_left_offset   = sps->frame_crop_left_offset,
 518         .frame_crop_right_offset  = sps->frame_crop_right_offset,
 519         .frame_crop_top_offset    = sps->frame_crop_top_offset,
 520         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,
 521
 522         .vui_parameters_present_flag = sps->vui_parameters_present_flag,
 523
 524         .vui_fields.bits = {
 525             .aspect_ratio_info_present_flag = sps->vui.aspect_ratio_info_present_flag,
 526             .timing_info_present_flag       = sps->vui.timing_info_present_flag,
 527             .bitstream_restriction_flag     = sps->vui.bitstream_restriction_flag,
 528             .log2_max_mv_length_horizontal  = sps->vui.log2_max_mv_length_horizontal,
 529             .log2_max_mv_length_vertical    = sps->vui.log2_max_mv_length_vertical,
 530         },
 531
 532         .aspect_ratio_idc  = sps->vui.aspect_ratio_idc,
 533         .sar_width         = sps->vui.sar_width,
 534         .sar_height        = sps->vui.sar_height,
 535         .num_units_in_tick = sps->vui.num_units_in_tick,
 536         .time_scale        = sps->vui.time_scale,
 537     };
 538
 539     *vpic = (VAEncPictureParameterBufferH264) {
 540         .CurrPic = {
 541             .picture_id = VA_INVALID_ID,
 542             .flags      = VA_PICTURE_H264_INVALID,
 543         },
 544
 545         .coded_buf = VA_INVALID_ID,
 546
 547         .pic_parameter_set_id = pps->pic_parameter_set_id,
 548         .seq_parameter_set_id = pps->seq_parameter_set_id,
 549
 550         .pic_init_qp                  = pps->pic_init_qp_minus26 + 26,
 551         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,
 552         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,
 553
 554         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,
 555         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,
 556
 557         .pic_fields.bits = {
 558             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,
 559             .weighted_pred_flag              = pps->weighted_pred_flag,
 560             .weighted_bipred_idc             = pps->weighted_bipred_idc,
 561             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,
 562             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,
 563             .deblocking_filter_control_present_flag =
 564                 pps->deblocking_filter_control_present_flag,
 565             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,
 566             .pic_order_present_flag          =
 567                 pps->bottom_field_pic_order_in_frame_present_flag,
 568             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,
 569         },
 570     };
 571
 572     return 0;
 573 }
 574
 575 static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
 576                                                  VAAPIEncodePicture *pic)
 577 {
 578     VAAPIEncodeContext               *ctx = avctx->priv_data;
 579     VAAPIEncodeH264Context          *priv = ctx->priv_data;
 580     VAAPIEncodeH264Options           *opt = ctx->codec_options;
 581     H264RawSPS                       *sps = &priv->sps;
 582     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 583     int i;
 584
 585     memset(&priv->current_access_unit, 0,
 586            sizeof(priv->current_access_unit));
 587
 588     if (pic->type == PICTURE_TYPE_IDR) {
 589         av_assert0(pic->display_order == pic->encode_order);
 590         priv->frame_num      = 0;
 591         priv->next_frame_num = 1;
 592         priv->cpb_delay      = 0;
 593         priv->last_idr_frame = pic->display_order;
 594         ++priv->idr_pic_count;
 595
 596         priv->slice_type       = 7;
 597         priv->primary_pic_type = 0;
 598     } else {
 599         priv->frame_num      = priv->next_frame_num;
 600
 601         if (pic->type != PICTURE_TYPE_B) {
 602             // Reference picture, so frame_num advances.
 603             priv->next_frame_num = (priv->frame_num + 1) &
 604                 ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
 605         }
 606         ++priv->cpb_delay;
 607
 608         if (pic->type == PICTURE_TYPE_I) {
 609             priv->slice_type       = 7;
 610             priv->primary_pic_type = 0;
 611         } else if (pic->type == PICTURE_TYPE_P) {
 612             priv->slice_type       = 5;
 613             priv->primary_pic_type = 1;
 614         } else {
 615             priv->slice_type       = 6;
 616             priv->primary_pic_type = 2;
 617         }
 618     }
 619     priv->pic_order_cnt = pic->display_order - priv->last_idr_frame;
 620     priv->dpb_delay     = pic->display_order - pic->encode_order + 1;
 621
 622     if (opt->aud) {
 623         priv->aud_needed = 1;
 624         priv->aud.nal_unit_header.nal_unit_type = H264_NAL_AUD;
 625         priv->aud.primary_pic_type = priv->primary_pic_type;
 626     } else {
 627         priv->aud_needed = 0;
 628     }
 629
 630     priv->sei_needed = 0;
 631
 632     if (opt->sei & SEI_IDENTIFIER && pic->encode_order == 0)
 633         priv->sei_needed |= SEI_IDENTIFIER;
 634 #if !CONFIG_VAAPI_1
 635     if (ctx->va_rc_mode == VA_RC_CBR)
 636         priv->sei_cbr_workaround_needed = 1;
 637 #endif
 638
 639     if (opt->sei & SEI_TIMING) {
 640         memset(&priv->pic_timing, 0, sizeof(priv->pic_timing));
 641
 642         priv->pic_timing.cpb_removal_delay = 2 * priv->cpb_delay;
 643         priv->pic_timing.dpb_output_delay  = 2 * priv->dpb_delay;
 644
 645         priv->sei_needed |= SEI_TIMING;
 646     }
 647
 648     if (opt->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) {
 649         priv->recovery_point.recovery_frame_cnt = 0;
 650         priv->recovery_point.exact_match_flag   = 1;
 651         priv->recovery_point.broken_link_flag   = ctx->b_per_p > 0;
 652
 653         priv->sei_needed |= SEI_RECOVERY_POINT;
 654     }
 655
 656     vpic->CurrPic = (VAPictureH264) {
 657         .picture_id          = pic->recon_surface,
 658         .frame_idx           = priv->frame_num,
 659         .flags               = 0,
 660         .TopFieldOrderCnt    = priv->pic_order_cnt,
 661         .BottomFieldOrderCnt = priv->pic_order_cnt,
 662     };
 663
 664     for (i = 0; i < pic->nb_refs; i++) {
 665         VAAPIEncodePicture *ref = pic->refs[i];
 666         unsigned int frame_num = (ref->encode_order - priv->last_idr_frame) &
 667             ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
 668         unsigned int pic_order_cnt = ref->display_order - priv->last_idr_frame;
 669
 670         av_assert0(ref && ref->encode_order < pic->encode_order);
 671         vpic->ReferenceFrames[i] = (VAPictureH264) {
 672             .picture_id          = ref->recon_surface,
 673             .frame_idx           = frame_num,
 674             .flags               = VA_PICTURE_H264_SHORT_TERM_REFERENCE,
 675             .TopFieldOrderCnt    = pic_order_cnt,
 676             .BottomFieldOrderCnt = pic_order_cnt,
 677         };
 678     }
 679     for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
 680         vpic->ReferenceFrames[i] = (VAPictureH264) {
 681             .picture_id = VA_INVALID_ID,
 682             .flags      = VA_PICTURE_H264_INVALID,
 683         };
 684     }
 685
 686     vpic->coded_buf = pic->output_buffer;
 687
 688     vpic->frame_num = priv->frame_num;
 689
 690     vpic->pic_fields.bits.idr_pic_flag       = (pic->type == PICTURE_TYPE_IDR);
 691     vpic->pic_fields.bits.reference_pic_flag = (pic->type != PICTURE_TYPE_B);
 692
 693     pic->nb_slices = 1;
 694
 695     return 0;
 696 }
 697
 698 static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,
 699                                                VAAPIEncodePicture *pic,
 700                                                VAAPIEncodeSlice *slice)
 701 {
 702     VAAPIEncodeContext               *ctx = avctx->priv_data;
 703     VAAPIEncodeH264Context          *priv = ctx->priv_data;
 704     H264RawSPS                       *sps = &priv->sps;
 705     H264RawPPS                       *pps = &priv->pps;
 706     H264RawSliceHeader                *sh = &priv->slice.header;
 707     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 708     VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
 709     int i;
 710
 711     if (pic->type == PICTURE_TYPE_IDR) {
 712         sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;
 713         sh->nal_unit_header.nal_ref_idc   = 3;
 714     } else {
 715         sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;
 716         sh->nal_unit_header.nal_ref_idc   = pic->type != PICTURE_TYPE_B;
 717     }
 718
 719     // Only one slice per frame.
 720     sh->first_mb_in_slice = 0;
 721     sh->slice_type        = priv->slice_type;
 722
 723     sh->pic_parameter_set_id = pps->pic_parameter_set_id;
 724
 725     sh->frame_num  = priv->frame_num;
 726     sh->idr_pic_id = priv->idr_pic_count;
 727
 728     sh->pic_order_cnt_lsb = priv->pic_order_cnt &
 729         ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);
 730
 731     sh->direct_spatial_mv_pred_flag = 1;
 732
 733     if (pic->type == PICTURE_TYPE_B)
 734         sh->slice_qp_delta = priv->fixed_qp_b - (pps->pic_init_qp_minus26 + 26);
 735     else if (pic->type == PICTURE_TYPE_P)
 736         sh->slice_qp_delta = priv->fixed_qp_p - (pps->pic_init_qp_minus26 + 26);
 737     else
 738         sh->slice_qp_delta = priv->fixed_qp_idr - (pps->pic_init_qp_minus26 + 26);
 739
 740
 741     vslice->macroblock_address = sh->first_mb_in_slice;
 742     vslice->num_macroblocks    = priv->mb_width * priv->mb_height;
 743
 744     vslice->macroblock_info = VA_INVALID_ID;
 745
 746     vslice->slice_type           = sh->slice_type % 5;
 747     vslice->pic_parameter_set_id = sh->pic_parameter_set_id;
 748     vslice->idr_pic_id           = sh->idr_pic_id;
 749
 750     vslice->pic_order_cnt_lsb = sh->pic_order_cnt_lsb;
 751
 752     vslice->direct_spatial_mv_pred_flag = sh->direct_spatial_mv_pred_flag;
 753
 754     for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {
 755         vslice->RefPicList0[i].picture_id = VA_INVALID_ID;
 756         vslice->RefPicList0[i].flags      = VA_PICTURE_H264_INVALID;
 757         vslice->RefPicList1[i].picture_id = VA_INVALID_ID;
 758         vslice->RefPicList1[i].flags      = VA_PICTURE_H264_INVALID;
 759     }
 760
 761     av_assert0(pic->nb_refs <= 2);
 762     if (pic->nb_refs >= 1) {
 763         // Backward reference for P- or B-frame.
 764         av_assert0(pic->type == PICTURE_TYPE_P ||
 765                    pic->type == PICTURE_TYPE_B);
 766         vslice->RefPicList0[0] = vpic->ReferenceFrames[0];
 767     }
 768     if (pic->nb_refs >= 2) {
 769         // Forward reference for B-frame.
 770         av_assert0(pic->type == PICTURE_TYPE_B);
 771         vslice->RefPicList1[0] = vpic->ReferenceFrames[1];
 772     }
 773
 774     vslice->slice_qp_delta = sh->slice_qp_delta;
 775
 776     return 0;
 777 }
 778
 779 static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)
 780 {
 781     VAAPIEncodeContext      *ctx = avctx->priv_data;
 782     VAAPIEncodeH264Context *priv = ctx->priv_data;
 783     VAAPIEncodeH264Options  *opt = ctx->codec_options;
 784     int err;
 785
 786     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_H264, avctx);
 787     if (err < 0)
 788         return err;
 789
 790     priv->mb_width  = FFALIGN(avctx->width,  16) / 16;
 791     priv->mb_height = FFALIGN(avctx->height, 16) / 16;
 792
 793     if (ctx->va_rc_mode == VA_RC_CQP) {
 794         priv->fixed_qp_p = opt->qp;
 795         if (avctx->i_quant_factor > 0.0)
 796             priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +
 797                                         avctx->i_quant_offset) + 0.5);
 798         else
 799             priv->fixed_qp_idr = priv->fixed_qp_p;
 800         if (avctx->b_quant_factor > 0.0)
 801             priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +
 802                                       avctx->b_quant_offset) + 0.5);
 803         else
 804             priv->fixed_qp_b = priv->fixed_qp_p;
 805
 806         opt->sei &= ~SEI_TIMING;
 807
 808         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
 809                "%d / %d / %d for IDR- / P- / B-frames.\n",
 810                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
 811
 812     } else if (ctx->va_rc_mode == VA_RC_CBR ||
 813                ctx->va_rc_mode == VA_RC_VBR) {
 814         // These still need to be  set for pic_init_qp/slice_qp_delta.
 815         priv->fixed_qp_idr = 26;
 816         priv->fixed_qp_p   = 26;
 817         priv->fixed_qp_b   = 26;
 818
 819         av_log(avctx, AV_LOG_DEBUG, "Using %s-bitrate = %"PRId64" bps.\n",
 820                ctx->va_rc_mode == VA_RC_CBR ? "constant" : "variable",
 821                avctx->bit_rate);
 822
 823     } else {
 824         av_assert0(0 && "Invalid RC mode.");
 825     }
 826
 827     if (avctx->compression_level == FF_COMPRESSION_DEFAULT)
 828         avctx->compression_level = opt->quality;
 829
 830     if (opt->sei & SEI_IDENTIFIER) {
 831         const char *lavc  = LIBAVCODEC_IDENT;
 832         const char *vaapi = VA_VERSION_S;
 833         const char *driver;
 834         int len;
 835
 836         memcpy(priv->identifier.uuid_iso_iec_11578,
 837                vaapi_encode_h264_sei_identifier_uuid,
 838                sizeof(priv->identifier.uuid_iso_iec_11578));
 839
 840         driver = vaQueryVendorString(ctx->hwctx->display);
 841         if (!driver)
 842             driver = "unknown driver";
 843
 844         len = snprintf(NULL, 0, "%s / VAAPI %s / %s", lavc, vaapi, driver);
 845         if (len >= 0) {
 846             priv->identifier_string = av_malloc(len + 1);
 847             if (!priv->identifier_string)
 848                 return AVERROR(ENOMEM);
 849
 850             snprintf(priv->identifier_string, len + 1,
 851                      "%s / VAAPI %s / %s", lavc, vaapi, driver);
 852
 853             priv->identifier.data = priv->identifier_string;
 854             priv->identifier.data_length = len + 1;
 855         }
 856     }
 857
 858     return 0;
 859 }
 860
 861 static const VAAPIEncodeType vaapi_encode_type_h264 = {
 862     .priv_data_size        = sizeof(VAAPIEncodeH264Context),
 863
 864     .configure             = &vaapi_encode_h264_configure,
 865
 866     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),
 867     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,
 868
 869     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),
 870     .init_picture_params   = &vaapi_encode_h264_init_picture_params,
 871
 872     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),
 873     .init_slice_params     = &vaapi_encode_h264_init_slice_params,
 874
 875     .sequence_header_type  = VAEncPackedHeaderSequence,
 876     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,
 877
 878     .slice_header_type     = VAEncPackedHeaderH264_Slice,
 879     .write_slice_header    = &vaapi_encode_h264_write_slice_header,
 880
 881     .write_extra_header    = &vaapi_encode_h264_write_extra_header,
 882 };
 883
 884 static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
 885 {
 886     VAAPIEncodeContext     *ctx = avctx->priv_data;
 887     VAAPIEncodeH264Options *opt =
 888         (VAAPIEncodeH264Options*)ctx->codec_options_data;
 889
 890     ctx->codec = &vaapi_encode_type_h264;
 891
 892     if (avctx->profile == FF_PROFILE_UNKNOWN)
 893         avctx->profile = opt->profile;
 894     if (avctx->level == FF_LEVEL_UNKNOWN)
 895         avctx->level = opt->level;
 896
 897     switch (avctx->profile) {
 898     case FF_PROFILE_H264_BASELINE:
 899         av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile is not "
 900                "supported, using constrained baseline profile instead.\n");
 901         avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;
 902     case FF_PROFILE_H264_CONSTRAINED_BASELINE:
 903         ctx->va_profile = VAProfileH264ConstrainedBaseline;
 904         if (avctx->max_b_frames != 0) {
 905             avctx->max_b_frames = 0;
 906             av_log(avctx, AV_LOG_WARNING, "H.264 constrained baseline profile "
 907                    "doesn't support encoding with B frames, disabling them.\n");
 908         }
 909         break;
 910     case FF_PROFILE_H264_MAIN:
 911         ctx->va_profile = VAProfileH264Main;
 912         break;
 913     case FF_PROFILE_H264_EXTENDED:
 914         av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "
 915                "is not supported.\n");
 916         return AVERROR_PATCHWELCOME;
 917     case FF_PROFILE_UNKNOWN:
 918     case FF_PROFILE_H264_HIGH:
 919         ctx->va_profile = VAProfileH264High;
 920         break;
 921     case FF_PROFILE_H264_HIGH_10:
 922     case FF_PROFILE_H264_HIGH_10_INTRA:
 923         av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "
 924                "are not supported.\n");
 925         return AVERROR_PATCHWELCOME;
 926     case FF_PROFILE_H264_HIGH_422:
 927     case FF_PROFILE_H264_HIGH_422_INTRA:
 928     case FF_PROFILE_H264_HIGH_444:
 929     case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
 930     case FF_PROFILE_H264_HIGH_444_INTRA:
 931     case FF_PROFILE_H264_CAVLC_444:
 932         av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "
 933                "are not supported.\n");
 934         return AVERROR_PATCHWELCOME;
 935     default:
 936         av_log(avctx, AV_LOG_ERROR, "Unknown H.264 profile %d.\n",
 937                avctx->profile);
 938         return AVERROR(EINVAL);
 939     }
 940     if (opt->low_power) {
 941 #if VA_CHECK_VERSION(0, 39, 2)
 942         ctx->va_entrypoint = VAEntrypointEncSliceLP;
 943 #else
 944         av_log(avctx, AV_LOG_ERROR, "Low-power encoding is not "
 945                "supported with this VAAPI version.\n");
 946         return AVERROR(EINVAL);
 947 #endif
 948     } else {
 949         ctx->va_entrypoint = VAEntrypointEncSlice;
 950     }
 951
 952     // Only 8-bit encode is supported.
 953     ctx->va_rt_format = VA_RT_FORMAT_YUV420;
 954
 955     if (avctx->bit_rate > 0) {
 956         if (avctx->rc_max_rate == avctx->bit_rate)
 957             ctx->va_rc_mode = VA_RC_CBR;
 958         else
 959             ctx->va_rc_mode = VA_RC_VBR;
 960     } else
 961         ctx->va_rc_mode = VA_RC_CQP;
 962
 963     ctx->va_packed_headers =
 964         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.
 965         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.
 966         VA_ENC_PACKED_HEADER_MISC;      // SEI.
 967
 968     ctx->surface_width  = FFALIGN(avctx->width,  16);
 969     ctx->surface_height = FFALIGN(avctx->height, 16);
 970
 971     return ff_vaapi_encode_init(avctx);
 972 }
 973
 974 static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)
 975 {
 976     VAAPIEncodeContext *ctx = avctx->priv_data;
 977     VAAPIEncodeH264Context *priv = ctx->priv_data;
 978
 979     if (priv) {
 980         ff_cbs_close(&priv->cbc);
 981         av_freep(&priv->identifier_string);
 982     }
 983
 984     return ff_vaapi_encode_close(avctx);
 985 }
 986
 987 #define OFFSET(x) (offsetof(VAAPIEncodeContext, codec_options_data) + \
 988                    offsetof(VAAPIEncodeH264Options, x))
 989 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 990 static const AVOption vaapi_encode_h264_options[] = {
 991     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
 992       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },
 993     { "quality", "Set encode quality (trades off against speed, higher is faster)",
 994       OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 8, FLAGS },
 995     { "low_power", "Use low-power encoding mode (experimental: only supported "
 996       "on some platforms, does not support all features)",
 997       OFFSET(low_power), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
 998     { "coder", "Entropy coder type",
 999       OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },
1000         { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1001         { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1002         { "vlc",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1003         { "ac",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1004
1005     { "aud", "Include AUD",
1006       OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
1007
1008     { "sei", "Set SEI to include",
1009       OFFSET(sei), AV_OPT_TYPE_FLAGS,
1010       { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },
1011       0, INT_MAX, FLAGS, "sei" },
1012     { "identifier", "Include encoder version identifier",
1013       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },
1014       INT_MIN, INT_MAX, FLAGS, "sei" },
1015     { "timing", "Include timing parameters (buffering_period and pic_timing)",
1016       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },
1017       INT_MIN, INT_MAX, FLAGS, "sei" },
1018     { "recovery_point", "Include recovery points where appropriate",
1019       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },
1020       INT_MIN, INT_MAX, FLAGS, "sei" },
1021
1022     { "profile", "Set profile (profile_idc and constraint_set*_flag)",
1023       OFFSET(profile), AV_OPT_TYPE_INT,
1024       { .i64 = FF_PROFILE_H264_HIGH }, 0x0000, 0xffff, FLAGS, "profile" },
1025
1026 #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \
1027       { .i64 = value }, 0, 0, FLAGS, "profile"
1028     { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },
1029     { PROFILE("main",                 FF_PROFILE_H264_MAIN) },
1030     { PROFILE("high",                 FF_PROFILE_H264_HIGH) },
1031 #undef PROFILE
1032
1033     { "level", "Set level (level_idc)",
1034       OFFSET(level), AV_OPT_TYPE_INT,
1035       { .i64 = 51 }, 0x00, 0xff, FLAGS, "level" },
1036
1037 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
1038       { .i64 = value }, 0, 0, FLAGS, "level"
1039     { LEVEL("1",   10) },
1040     { LEVEL("1.1", 11) },
1041     { LEVEL("1.2", 12) },
1042     { LEVEL("1.3", 13) },
1043     { LEVEL("2",   20) },
1044     { LEVEL("2.1", 21) },
1045     { LEVEL("2.2", 22) },
1046     { LEVEL("3",   30) },
1047     { LEVEL("3.1", 31) },
1048     { LEVEL("3.2", 32) },
1049     { LEVEL("4",   40) },
1050     { LEVEL("4.1", 41) },
1051     { LEVEL("4.2", 42) },
1052     { LEVEL("5",   50) },
1053     { LEVEL("5.1", 51) },
1054     { LEVEL("5.2", 52) },
1055     { LEVEL("6",   60) },
1056     { LEVEL("6.1", 61) },
1057     { LEVEL("6.2", 62) },
1058 #undef LEVEL
1059
1060     { NULL },
1061 };
1062
1063 static const AVCodecDefault vaapi_encode_h264_defaults[] = {
1064     { "b",              "0"   },
1065     { "bf",             "2"   },
1066     { "g",              "120" },
1067     { "i_qfactor",      "1"   },
1068     { "i_qoffset",      "0"   },
1069     { "b_qfactor",      "6/5" },
1070     { "b_qoffset",      "0"   },
1071     { "qmin",           "0"   },
1072     { NULL },
1073 };
1074
1075 static const AVClass vaapi_encode_h264_class = {
1076     .class_name = "h264_vaapi",
1077     .item_name  = av_default_item_name,
1078     .option     = vaapi_encode_h264_options,
1079     .version    = LIBAVUTIL_VERSION_INT,
1080 };
1081
1082 AVCodec ff_h264_vaapi_encoder = {
1083     .name           = "h264_vaapi",
1084     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),
1085     .type           = AVMEDIA_TYPE_VIDEO,
1086     .id             = AV_CODEC_ID_H264,
1087     .priv_data_size = (sizeof(VAAPIEncodeContext) +
1088                        sizeof(VAAPIEncodeH264Options)),
1089     .init           = &vaapi_encode_h264_init,
1090     .encode2        = &ff_vaapi_encode2,
1091     .close          = &vaapi_encode_h264_close,
1092     .priv_class     = &vaapi_encode_h264_class,
1093     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
1094     .defaults       = vaapi_encode_h264_defaults,
1095     .pix_fmts = (const enum AVPixelFormat[]) {
1096         AV_PIX_FMT_VAAPI,
1097         AV_PIX_FMT_NONE,
1098     },
1099     .wrapper_name   = "vaapi",
1100 };