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     VAAPIEncodeContext common;
  51
  52     // User options.
  53     int qp;
  54     int quality;
  55     int coder;
  56     int aud;
  57     int sei;
  58     int profile;
  59     int level;
  60
  61     // Derived settings.
  62     int mb_width;
  63     int mb_height;
  64
  65     int fixed_qp_idr;
  66     int fixed_qp_p;
  67     int fixed_qp_b;
  68
  69     // Stream state.
  70     int frame_num;
  71     int pic_order_cnt;
  72     int next_frame_num;
  73     int64_t last_idr_frame;
  74     int64_t idr_pic_count;
  75
  76     int primary_pic_type;
  77     int slice_type;
  78
  79     int cpb_delay;
  80     int dpb_delay;
  81
  82     // Writer structures.
  83     CodedBitstreamContext *cbc;
  84     CodedBitstreamFragment current_access_unit;
  85
  86     H264RawAUD   raw_aud;
  87     H264RawSPS   raw_sps;
  88     H264RawPPS   raw_pps;
  89     H264RawSEI   raw_sei;
  90     H264RawSlice raw_slice;
  91
  92     H264RawSEIBufferingPeriod      sei_buffering_period;
  93     H264RawSEIPicTiming            sei_pic_timing;
  94     H264RawSEIRecoveryPoint        sei_recovery_point;
  95     H264RawSEIUserDataUnregistered sei_identifier;
  96     char                          *sei_identifier_string;
  97
  98     int aud_needed;
  99     int sei_needed;
 100     int sei_cbr_workaround_needed;
 101 } VAAPIEncodeH264Context;
 102
 103
 104 static int vaapi_encode_h264_write_access_unit(AVCodecContext *avctx,
 105                                                char *data, size_t *data_len,
 106                                                CodedBitstreamFragment *au)
 107 {
 108     VAAPIEncodeH264Context *priv = avctx->priv_data;
 109     int err;
 110
 111     err = ff_cbs_write_fragment_data(priv->cbc, au);
 112     if (err < 0) {
 113         av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
 114         return err;
 115     }
 116
 117     if (*data_len < 8 * au->data_size - au->data_bit_padding) {
 118         av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
 119                "%zu < %zu.\n", *data_len,
 120                8 * au->data_size - au->data_bit_padding);
 121         return AVERROR(ENOSPC);
 122     }
 123
 124     memcpy(data, au->data, au->data_size);
 125     *data_len = 8 * au->data_size - au->data_bit_padding;
 126
 127     return 0;
 128 }
 129
 130 static int vaapi_encode_h264_add_nal(AVCodecContext *avctx,
 131                                      CodedBitstreamFragment *au,
 132                                      void *nal_unit)
 133 {
 134     VAAPIEncodeH264Context *priv = avctx->priv_data;
 135     H264RawNALUnitHeader *header = nal_unit;
 136     int err;
 137
 138     err = ff_cbs_insert_unit_content(priv->cbc, au, -1,
 139                                      header->nal_unit_type, nal_unit, NULL);
 140     if (err < 0) {
 141         av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: "
 142                "type = %d.\n", header->nal_unit_type);
 143         return err;
 144     }
 145
 146     return 0;
 147 }
 148
 149 static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,
 150                                                    char *data, size_t *data_len)
 151 {
 152     VAAPIEncodeH264Context *priv = avctx->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->raw_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->raw_sps);
 164     if (err < 0)
 165         goto fail;
 166
 167     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_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     VAAPIEncodeH264Context *priv = avctx->priv_data;
 183     CodedBitstreamFragment   *au = &priv->current_access_unit;
 184     int err;
 185
 186     if (priv->aud_needed) {
 187         err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);
 188         if (err < 0)
 189             goto fail;
 190         priv->aud_needed = 0;
 191     }
 192
 193     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_slice);
 194     if (err < 0)
 195         goto fail;
 196
 197     err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 198 fail:
 199     ff_cbs_fragment_uninit(priv->cbc, au);
 200     return err;
 201 }
 202
 203 static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,
 204                                                 VAAPIEncodePicture *pic,
 205                                                 int index, int *type,
 206                                                 char *data, size_t *data_len)
 207 {
 208     VAAPIEncodeH264Context *priv = avctx->priv_data;
 209     CodedBitstreamFragment   *au = &priv->current_access_unit;
 210     int err, i;
 211
 212     if (priv->sei_needed) {
 213         H264RawSEI *sei = &priv->raw_sei;
 214
 215         if (priv->aud_needed) {
 216             err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);
 217             if (err < 0)
 218                 goto fail;
 219             priv->aud_needed = 0;
 220         }
 221
 222         *sei = (H264RawSEI) {
 223             .nal_unit_header = {
 224                 .nal_unit_type = H264_NAL_SEI,
 225             },
 226         };
 227
 228         i = 0;
 229
 230         if (priv->sei_needed & SEI_IDENTIFIER) {
 231             sei->payload[i].payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED;
 232             sei->payload[i].payload.user_data_unregistered = priv->sei_identifier;
 233             ++i;
 234         }
 235         if (priv->sei_needed & SEI_TIMING) {
 236             if (pic->type == PICTURE_TYPE_IDR) {
 237                 sei->payload[i].payload_type = H264_SEI_TYPE_BUFFERING_PERIOD;
 238                 sei->payload[i].payload.buffering_period = priv->sei_buffering_period;
 239                 ++i;
 240             }
 241             sei->payload[i].payload_type = H264_SEI_TYPE_PIC_TIMING;
 242             sei->payload[i].payload.pic_timing = priv->sei_pic_timing;
 243             ++i;
 244         }
 245         if (priv->sei_needed & SEI_RECOVERY_POINT) {
 246             sei->payload[i].payload_type = H264_SEI_TYPE_RECOVERY_POINT;
 247             sei->payload[i].payload.recovery_point = priv->sei_recovery_point;
 248             ++i;
 249         }
 250
 251         sei->payload_count = i;
 252         av_assert0(sei->payload_count > 0);
 253
 254         err = vaapi_encode_h264_add_nal(avctx, au, sei);
 255         if (err < 0)
 256             goto fail;
 257         priv->sei_needed = 0;
 258
 259         err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 260         if (err < 0)
 261             goto fail;
 262
 263         ff_cbs_fragment_uninit(priv->cbc, au);
 264
 265         *type = VAEncPackedHeaderRawData;
 266         return 0;
 267
 268 #if !CONFIG_VAAPI_1
 269     } else if (priv->sei_cbr_workaround_needed) {
 270         // Insert a zero-length header using the old SEI type.  This is
 271         // required to avoid triggering broken behaviour on Intel platforms
 272         // in CBR mode where an invalid SEI message is generated by the
 273         // driver and inserted into the stream.
 274         *data_len = 0;
 275         *type = VAEncPackedHeaderH264_SEI;
 276         priv->sei_cbr_workaround_needed = 0;
 277         return 0;
 278 #endif
 279
 280     } else {
 281         return AVERROR_EOF;
 282     }
 283
 284 fail:
 285     ff_cbs_fragment_uninit(priv->cbc, au);
 286     return err;
 287 }
 288
 289 static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
 290 {
 291     VAAPIEncodeContext                *ctx = avctx->priv_data;
 292     VAAPIEncodeH264Context           *priv = avctx->priv_data;
 293     H264RawSPS                        *sps = &priv->raw_sps;
 294     H264RawPPS                        *pps = &priv->raw_pps;
 295     VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
 296     VAEncPictureParameterBufferH264  *vpic = ctx->codec_picture_params;
 297
 298     memset(&priv->current_access_unit, 0,
 299            sizeof(priv->current_access_unit));
 300
 301     memset(sps, 0, sizeof(*sps));
 302     memset(pps, 0, sizeof(*pps));
 303
 304     sps->nal_unit_header.nal_ref_idc   = 3;
 305     sps->nal_unit_header.nal_unit_type = H264_NAL_SPS;
 306
 307     sps->profile_idc = avctx->profile & 0xff;
 308
 309     if (avctx->profile == FF_PROFILE_H264_CONSTRAINED_BASELINE ||
 310         avctx->profile == FF_PROFILE_H264_MAIN)
 311         sps->constraint_set1_flag = 1;
 312
 313     if (avctx->profile == FF_PROFILE_H264_HIGH)
 314         sps->constraint_set3_flag = ctx->gop_size == 1;
 315
 316     if (avctx->profile == FF_PROFILE_H264_MAIN ||
 317         avctx->profile == FF_PROFILE_H264_HIGH) {
 318         sps->constraint_set4_flag = 1;
 319         sps->constraint_set5_flag = ctx->b_per_p == 0;
 320     }
 321
 322     sps->level_idc = avctx->level;
 323
 324     sps->seq_parameter_set_id = 0;
 325     sps->chroma_format_idc    = 1;
 326
 327     sps->log2_max_frame_num_minus4 = 4;
 328     sps->pic_order_cnt_type        = 0;
 329     sps->log2_max_pic_order_cnt_lsb_minus4 =
 330         av_clip(av_log2(ctx->b_per_p + 1) - 2, 0, 12);
 331
 332     sps->max_num_ref_frames =
 333         ctx->gop_size == 1 ? 0 : 1 + (ctx->b_per_p > 0);
 334
 335     sps->pic_width_in_mbs_minus1        = priv->mb_width  - 1;
 336     sps->pic_height_in_map_units_minus1 = priv->mb_height - 1;
 337
 338     sps->frame_mbs_only_flag = 1;
 339     sps->direct_8x8_inference_flag = 1;
 340
 341     if (avctx->width  != 16 * priv->mb_width ||
 342         avctx->height != 16 * priv->mb_height) {
 343         sps->frame_cropping_flag = 1;
 344
 345         sps->frame_crop_left_offset   = 0;
 346         sps->frame_crop_right_offset  =
 347             (16 * priv->mb_width - avctx->width) / 2;
 348         sps->frame_crop_top_offset    = 0;
 349         sps->frame_crop_bottom_offset =
 350             (16 * priv->mb_height - avctx->height) / 2;
 351     } else {
 352         sps->frame_cropping_flag = 0;
 353     }
 354
 355     sps->vui_parameters_present_flag = 1;
 356
 357     if (avctx->sample_aspect_ratio.num != 0 &&
 358         avctx->sample_aspect_ratio.den != 0) {
 359         static const AVRational sar_idc[] = {
 360             {   0,  0 },
 361             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },
 362             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },
 363             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },
 364             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },
 365         };
 366         int i;
 367         for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) {
 368             if (avctx->sample_aspect_ratio.num == sar_idc[i].num &&
 369                 avctx->sample_aspect_ratio.den == sar_idc[i].den) {
 370                 sps->vui.aspect_ratio_idc = i;
 371                 break;
 372             }
 373         }
 374         if (i >= FF_ARRAY_ELEMS(sar_idc)) {
 375             sps->vui.aspect_ratio_idc = 255;
 376             sps->vui.sar_width  = avctx->sample_aspect_ratio.num;
 377             sps->vui.sar_height = avctx->sample_aspect_ratio.den;
 378         }
 379         sps->vui.aspect_ratio_info_present_flag = 1;
 380     }
 381
 382     if (avctx->color_range     != AVCOL_RANGE_UNSPECIFIED ||
 383         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 384         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 385         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 386         sps->vui.video_signal_type_present_flag = 1;
 387         sps->vui.video_format      = 5; // Unspecified.
 388         sps->vui.video_full_range_flag =
 389             avctx->color_range == AVCOL_RANGE_JPEG;
 390
 391         if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 392             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 393             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 394             sps->vui.colour_description_present_flag = 1;
 395             sps->vui.colour_primaries         = avctx->color_primaries;
 396             sps->vui.transfer_characteristics = avctx->color_trc;
 397             sps->vui.matrix_coefficients      = avctx->colorspace;
 398         }
 399     } else {
 400         sps->vui.video_format             = 5;
 401         sps->vui.video_full_range_flag    = 0;
 402         sps->vui.colour_primaries         = avctx->color_primaries;
 403         sps->vui.transfer_characteristics = avctx->color_trc;
 404         sps->vui.matrix_coefficients      = avctx->colorspace;
 405     }
 406
 407     if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
 408         sps->vui.chroma_loc_info_present_flag = 1;
 409         sps->vui.chroma_sample_loc_type_top_field    =
 410         sps->vui.chroma_sample_loc_type_bottom_field =
 411             avctx->chroma_sample_location - 1;
 412     }
 413
 414     sps->vui.timing_info_present_flag = 1;
 415     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
 416         sps->vui.num_units_in_tick = avctx->framerate.den;
 417         sps->vui.time_scale        = 2 * avctx->framerate.num;
 418         sps->vui.fixed_frame_rate_flag = 1;
 419     } else {
 420         sps->vui.num_units_in_tick = avctx->time_base.num;
 421         sps->vui.time_scale        = 2 * avctx->time_base.den;
 422         sps->vui.fixed_frame_rate_flag = 0;
 423     }
 424
 425     if (priv->sei & SEI_TIMING) {
 426         H264RawHRD *hrd = &sps->vui.nal_hrd_parameters;
 427         H264RawSEIBufferingPeriod *bp = &priv->sei_buffering_period;
 428
 429         sps->vui.nal_hrd_parameters_present_flag = 1;
 430
 431         hrd->cpb_cnt_minus1 = 0;
 432
 433         // Try to scale these to a sensible range so that the
 434         // golomb encode of the value is not overlong.
 435         hrd->bit_rate_scale =
 436             av_clip_uintp2(av_log2(ctx->va_bit_rate) - 15 - 6, 4);
 437         hrd->bit_rate_value_minus1[0] =
 438             (ctx->va_bit_rate >> hrd->bit_rate_scale + 6) - 1;
 439
 440         hrd->cpb_size_scale =
 441             av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4);
 442         hrd->cpb_size_value_minus1[0] =
 443             (ctx->hrd_params.hrd.buffer_size >> hrd->cpb_size_scale + 4) - 1;
 444
 445         // CBR mode as defined for the HRD cannot be achieved without filler
 446         // data, so this flag cannot be set even with VAAPI CBR modes.
 447         hrd->cbr_flag[0] = 0;
 448
 449         hrd->initial_cpb_removal_delay_length_minus1 = 23;
 450         hrd->cpb_removal_delay_length_minus1         = 23;
 451         hrd->dpb_output_delay_length_minus1          = 7;
 452         hrd->time_offset_length                      = 0;
 453
 454         bp->seq_parameter_set_id = sps->seq_parameter_set_id;
 455
 456         // This calculation can easily overflow 32 bits.
 457         bp->nal.initial_cpb_removal_delay[0] = 90000 *
 458             (uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness /
 459             ctx->hrd_params.hrd.buffer_size;
 460         bp->nal.initial_cpb_removal_delay_offset[0] = 0;
 461     } else {
 462         sps->vui.nal_hrd_parameters_present_flag = 0;
 463         sps->vui.low_delay_hrd_flag = 1 - sps->vui.fixed_frame_rate_flag;
 464     }
 465
 466     sps->vui.bitstream_restriction_flag    = 1;
 467     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;
 468     sps->vui.log2_max_mv_length_horizontal = 16;
 469     sps->vui.log2_max_mv_length_vertical   = 16;
 470     sps->vui.max_num_reorder_frames        = (ctx->b_per_p > 0);
 471     sps->vui.max_dec_frame_buffering       = sps->max_num_ref_frames;
 472
 473     pps->nal_unit_header.nal_ref_idc = 3;
 474     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;
 475
 476     pps->pic_parameter_set_id = 0;
 477     pps->seq_parameter_set_id = 0;
 478
 479     pps->entropy_coding_mode_flag =
 480         !(sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 481           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 482           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);
 483     if (!priv->coder && pps->entropy_coding_mode_flag)
 484         pps->entropy_coding_mode_flag = 0;
 485
 486     pps->num_ref_idx_l0_default_active_minus1 = 0;
 487     pps->num_ref_idx_l1_default_active_minus1 = 0;
 488
 489     pps->pic_init_qp_minus26 = priv->fixed_qp_idr - 26;
 490
 491     if (sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 492         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 493         sps->profile_idc == FF_PROFILE_H264_MAIN) {
 494         pps->more_rbsp_data = 0;
 495     } else {
 496         pps->more_rbsp_data = 1;
 497
 498         pps->transform_8x8_mode_flag = 1;
 499     }
 500
 501     *vseq = (VAEncSequenceParameterBufferH264) {
 502         .seq_parameter_set_id = sps->seq_parameter_set_id,
 503         .level_idc        = sps->level_idc,
 504         .intra_period     = ctx->gop_size,
 505         .intra_idr_period = ctx->gop_size,
 506         .ip_period        = ctx->b_per_p + 1,
 507
 508         .bits_per_second       = ctx->va_bit_rate,
 509         .max_num_ref_frames    = sps->max_num_ref_frames,
 510         .picture_width_in_mbs  = sps->pic_width_in_mbs_minus1 + 1,
 511         .picture_height_in_mbs = sps->pic_height_in_map_units_minus1 + 1,
 512
 513         .seq_fields.bits = {
 514             .chroma_format_idc                 = sps->chroma_format_idc,
 515             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,
 516             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,
 517             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,
 518             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,
 519             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,
 520             .pic_order_cnt_type                = sps->pic_order_cnt_type,
 521             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,
 522             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,
 523         },
 524
 525         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,
 526         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,
 527
 528         .frame_cropping_flag      = sps->frame_cropping_flag,
 529         .frame_crop_left_offset   = sps->frame_crop_left_offset,
 530         .frame_crop_right_offset  = sps->frame_crop_right_offset,
 531         .frame_crop_top_offset    = sps->frame_crop_top_offset,
 532         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,
 533
 534         .vui_parameters_present_flag = sps->vui_parameters_present_flag,
 535
 536         .vui_fields.bits = {
 537             .aspect_ratio_info_present_flag = sps->vui.aspect_ratio_info_present_flag,
 538             .timing_info_present_flag       = sps->vui.timing_info_present_flag,
 539             .bitstream_restriction_flag     = sps->vui.bitstream_restriction_flag,
 540             .log2_max_mv_length_horizontal  = sps->vui.log2_max_mv_length_horizontal,
 541             .log2_max_mv_length_vertical    = sps->vui.log2_max_mv_length_vertical,
 542         },
 543
 544         .aspect_ratio_idc  = sps->vui.aspect_ratio_idc,
 545         .sar_width         = sps->vui.sar_width,
 546         .sar_height        = sps->vui.sar_height,
 547         .num_units_in_tick = sps->vui.num_units_in_tick,
 548         .time_scale        = sps->vui.time_scale,
 549     };
 550
 551     *vpic = (VAEncPictureParameterBufferH264) {
 552         .CurrPic = {
 553             .picture_id = VA_INVALID_ID,
 554             .flags      = VA_PICTURE_H264_INVALID,
 555         },
 556
 557         .coded_buf = VA_INVALID_ID,
 558
 559         .pic_parameter_set_id = pps->pic_parameter_set_id,
 560         .seq_parameter_set_id = pps->seq_parameter_set_id,
 561
 562         .pic_init_qp                  = pps->pic_init_qp_minus26 + 26,
 563         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,
 564         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,
 565
 566         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,
 567         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,
 568
 569         .pic_fields.bits = {
 570             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,
 571             .weighted_pred_flag              = pps->weighted_pred_flag,
 572             .weighted_bipred_idc             = pps->weighted_bipred_idc,
 573             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,
 574             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,
 575             .deblocking_filter_control_present_flag =
 576                 pps->deblocking_filter_control_present_flag,
 577             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,
 578             .pic_order_present_flag          =
 579                 pps->bottom_field_pic_order_in_frame_present_flag,
 580             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,
 581         },
 582     };
 583
 584     return 0;
 585 }
 586
 587 static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
 588                                                  VAAPIEncodePicture *pic)
 589 {
 590     VAAPIEncodeContext               *ctx = avctx->priv_data;
 591     VAAPIEncodeH264Context          *priv = avctx->priv_data;
 592     H264RawSPS                       *sps = &priv->raw_sps;
 593     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 594     int i;
 595
 596     memset(&priv->current_access_unit, 0,
 597            sizeof(priv->current_access_unit));
 598
 599     if (pic->type == PICTURE_TYPE_IDR) {
 600         av_assert0(pic->display_order == pic->encode_order);
 601         priv->frame_num      = 0;
 602         priv->next_frame_num = 1;
 603         priv->cpb_delay      = 0;
 604         priv->last_idr_frame = pic->display_order;
 605         ++priv->idr_pic_count;
 606
 607         priv->slice_type       = 7;
 608         priv->primary_pic_type = 0;
 609     } else {
 610         priv->frame_num      = priv->next_frame_num;
 611
 612         if (pic->type != PICTURE_TYPE_B) {
 613             // Reference picture, so frame_num advances.
 614             priv->next_frame_num = (priv->frame_num + 1) &
 615                 ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
 616         }
 617         ++priv->cpb_delay;
 618
 619         if (pic->type == PICTURE_TYPE_I) {
 620             priv->slice_type       = 7;
 621             priv->primary_pic_type = 0;
 622         } else if (pic->type == PICTURE_TYPE_P) {
 623             priv->slice_type       = 5;
 624             priv->primary_pic_type = 1;
 625         } else {
 626             priv->slice_type       = 6;
 627             priv->primary_pic_type = 2;
 628         }
 629     }
 630     priv->pic_order_cnt = pic->display_order - priv->last_idr_frame;
 631     priv->dpb_delay     = pic->display_order - pic->encode_order + 1;
 632
 633     if (priv->aud) {
 634         priv->aud_needed = 1;
 635         priv->raw_aud = (H264RawAUD) {
 636             .nal_unit_header = {
 637                 .nal_unit_type = H264_NAL_AUD,
 638             },
 639             .primary_pic_type  = priv->primary_pic_type,
 640         };
 641     } else {
 642         priv->aud_needed = 0;
 643     }
 644
 645     priv->sei_needed = 0;
 646
 647     if (priv->sei & SEI_IDENTIFIER && pic->encode_order == 0)
 648         priv->sei_needed |= SEI_IDENTIFIER;
 649 #if !CONFIG_VAAPI_1
 650     if (ctx->va_rc_mode == VA_RC_CBR)
 651         priv->sei_cbr_workaround_needed = 1;
 652 #endif
 653
 654     if (priv->sei & SEI_TIMING) {
 655         priv->sei_pic_timing = (H264RawSEIPicTiming) {
 656             .cpb_removal_delay = 2 * priv->cpb_delay,
 657             .dpb_output_delay  = 2 * priv->dpb_delay,
 658         };
 659
 660         priv->sei_needed |= SEI_TIMING;
 661     }
 662
 663     if (priv->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) {
 664         priv->sei_recovery_point = (H264RawSEIRecoveryPoint) {
 665             .recovery_frame_cnt = 0,
 666             .exact_match_flag   = 1,
 667             .broken_link_flag   = ctx->b_per_p > 0,
 668         };
 669
 670         priv->sei_needed |= SEI_RECOVERY_POINT;
 671     }
 672
 673     vpic->CurrPic = (VAPictureH264) {
 674         .picture_id          = pic->recon_surface,
 675         .frame_idx           = priv->frame_num,
 676         .flags               = 0,
 677         .TopFieldOrderCnt    = priv->pic_order_cnt,
 678         .BottomFieldOrderCnt = priv->pic_order_cnt,
 679     };
 680
 681     for (i = 0; i < pic->nb_refs; i++) {
 682         VAAPIEncodePicture *ref = pic->refs[i];
 683         unsigned int frame_num = (ref->encode_order - priv->last_idr_frame) &
 684             ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
 685         unsigned int pic_order_cnt = ref->display_order - priv->last_idr_frame;
 686
 687         av_assert0(ref && ref->encode_order < pic->encode_order);
 688         vpic->ReferenceFrames[i] = (VAPictureH264) {
 689             .picture_id          = ref->recon_surface,
 690             .frame_idx           = frame_num,
 691             .flags               = VA_PICTURE_H264_SHORT_TERM_REFERENCE,
 692             .TopFieldOrderCnt    = pic_order_cnt,
 693             .BottomFieldOrderCnt = pic_order_cnt,
 694         };
 695     }
 696     for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
 697         vpic->ReferenceFrames[i] = (VAPictureH264) {
 698             .picture_id = VA_INVALID_ID,
 699             .flags      = VA_PICTURE_H264_INVALID,
 700         };
 701     }
 702
 703     vpic->coded_buf = pic->output_buffer;
 704
 705     vpic->frame_num = priv->frame_num;
 706
 707     vpic->pic_fields.bits.idr_pic_flag       = (pic->type == PICTURE_TYPE_IDR);
 708     vpic->pic_fields.bits.reference_pic_flag = (pic->type != PICTURE_TYPE_B);
 709
 710     pic->nb_slices = 1;
 711
 712     return 0;
 713 }
 714
 715 static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,
 716                                                VAAPIEncodePicture *pic,
 717                                                VAAPIEncodeSlice *slice)
 718 {
 719     VAAPIEncodeH264Context          *priv = avctx->priv_data;
 720     H264RawSPS                       *sps = &priv->raw_sps;
 721     H264RawPPS                       *pps = &priv->raw_pps;
 722     H264RawSliceHeader                *sh = &priv->raw_slice.header;
 723     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 724     VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
 725     int i;
 726
 727     if (pic->type == PICTURE_TYPE_IDR) {
 728         sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;
 729         sh->nal_unit_header.nal_ref_idc   = 3;
 730     } else {
 731         sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;
 732         sh->nal_unit_header.nal_ref_idc   = pic->type != PICTURE_TYPE_B;
 733     }
 734
 735     // Only one slice per frame.
 736     sh->first_mb_in_slice = 0;
 737     sh->slice_type        = priv->slice_type;
 738
 739     sh->pic_parameter_set_id = pps->pic_parameter_set_id;
 740
 741     sh->frame_num  = priv->frame_num;
 742     sh->idr_pic_id = priv->idr_pic_count;
 743
 744     sh->pic_order_cnt_lsb = priv->pic_order_cnt &
 745         ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);
 746
 747     sh->direct_spatial_mv_pred_flag = 1;
 748
 749     if (pic->type == PICTURE_TYPE_B)
 750         sh->slice_qp_delta = priv->fixed_qp_b - (pps->pic_init_qp_minus26 + 26);
 751     else if (pic->type == PICTURE_TYPE_P)
 752         sh->slice_qp_delta = priv->fixed_qp_p - (pps->pic_init_qp_minus26 + 26);
 753     else
 754         sh->slice_qp_delta = priv->fixed_qp_idr - (pps->pic_init_qp_minus26 + 26);
 755
 756
 757     vslice->macroblock_address = sh->first_mb_in_slice;
 758     vslice->num_macroblocks    = priv->mb_width * priv->mb_height;
 759
 760     vslice->macroblock_info = VA_INVALID_ID;
 761
 762     vslice->slice_type           = sh->slice_type % 5;
 763     vslice->pic_parameter_set_id = sh->pic_parameter_set_id;
 764     vslice->idr_pic_id           = sh->idr_pic_id;
 765
 766     vslice->pic_order_cnt_lsb = sh->pic_order_cnt_lsb;
 767
 768     vslice->direct_spatial_mv_pred_flag = sh->direct_spatial_mv_pred_flag;
 769
 770     for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {
 771         vslice->RefPicList0[i].picture_id = VA_INVALID_ID;
 772         vslice->RefPicList0[i].flags      = VA_PICTURE_H264_INVALID;
 773         vslice->RefPicList1[i].picture_id = VA_INVALID_ID;
 774         vslice->RefPicList1[i].flags      = VA_PICTURE_H264_INVALID;
 775     }
 776
 777     av_assert0(pic->nb_refs <= 2);
 778     if (pic->nb_refs >= 1) {
 779         // Backward reference for P- or B-frame.
 780         av_assert0(pic->type == PICTURE_TYPE_P ||
 781                    pic->type == PICTURE_TYPE_B);
 782         vslice->RefPicList0[0] = vpic->ReferenceFrames[0];
 783     }
 784     if (pic->nb_refs >= 2) {
 785         // Forward reference for B-frame.
 786         av_assert0(pic->type == PICTURE_TYPE_B);
 787         vslice->RefPicList1[0] = vpic->ReferenceFrames[1];
 788     }
 789
 790     vslice->slice_qp_delta = sh->slice_qp_delta;
 791
 792     return 0;
 793 }
 794
 795 static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)
 796 {
 797     VAAPIEncodeContext      *ctx = avctx->priv_data;
 798     VAAPIEncodeH264Context *priv = avctx->priv_data;
 799     int err;
 800
 801     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_H264, avctx);
 802     if (err < 0)
 803         return err;
 804
 805     priv->mb_width  = FFALIGN(avctx->width,  16) / 16;
 806     priv->mb_height = FFALIGN(avctx->height, 16) / 16;
 807
 808     if (ctx->va_rc_mode == VA_RC_CQP) {
 809         priv->fixed_qp_p = priv->qp;
 810         if (avctx->i_quant_factor > 0.0)
 811             priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +
 812                                         avctx->i_quant_offset) + 0.5);
 813         else
 814             priv->fixed_qp_idr = priv->fixed_qp_p;
 815         if (avctx->b_quant_factor > 0.0)
 816             priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +
 817                                       avctx->b_quant_offset) + 0.5);
 818         else
 819             priv->fixed_qp_b = priv->fixed_qp_p;
 820
 821         priv->sei &= ~SEI_TIMING;
 822
 823         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
 824                "%d / %d / %d for IDR- / P- / B-frames.\n",
 825                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
 826
 827     } else if (ctx->va_rc_mode == VA_RC_CBR ||
 828                ctx->va_rc_mode == VA_RC_VBR) {
 829         // These still need to be  set for pic_init_qp/slice_qp_delta.
 830         priv->fixed_qp_idr = 26;
 831         priv->fixed_qp_p   = 26;
 832         priv->fixed_qp_b   = 26;
 833
 834     } else {
 835         av_assert0(0 && "Invalid RC mode.");
 836     }
 837
 838     if (priv->sei & SEI_IDENTIFIER) {
 839         const char *lavc  = LIBAVCODEC_IDENT;
 840         const char *vaapi = VA_VERSION_S;
 841         const char *driver;
 842         int len;
 843
 844         memcpy(priv->sei_identifier.uuid_iso_iec_11578,
 845                vaapi_encode_h264_sei_identifier_uuid,
 846                sizeof(priv->sei_identifier.uuid_iso_iec_11578));
 847
 848         driver = vaQueryVendorString(ctx->hwctx->display);
 849         if (!driver)
 850             driver = "unknown driver";
 851
 852         len = snprintf(NULL, 0, "%s / VAAPI %s / %s", lavc, vaapi, driver);
 853         if (len >= 0) {
 854             priv->sei_identifier_string = av_malloc(len + 1);
 855             if (!priv->sei_identifier_string)
 856                 return AVERROR(ENOMEM);
 857
 858             snprintf(priv->sei_identifier_string, len + 1,
 859                      "%s / VAAPI %s / %s", lavc, vaapi, driver);
 860
 861             priv->sei_identifier.data        = priv->sei_identifier_string;
 862             priv->sei_identifier.data_length = len + 1;
 863         }
 864     }
 865
 866     return 0;
 867 }
 868
 869 static const VAAPIEncodeProfile vaapi_encode_h264_profiles[] = {
 870     { FF_PROFILE_H264_HIGH, 8, 3, 1, 1, VAProfileH264High },
 871     { FF_PROFILE_H264_MAIN, 8, 3, 1, 1, VAProfileH264Main },
 872     { FF_PROFILE_H264_CONSTRAINED_BASELINE,
 873                             8, 3, 1, 1, VAProfileH264ConstrainedBaseline },
 874     { FF_PROFILE_UNKNOWN }
 875 };
 876
 877 static const VAAPIEncodeType vaapi_encode_type_h264 = {
 878     .profiles              = vaapi_encode_h264_profiles,
 879
 880     .configure             = &vaapi_encode_h264_configure,
 881
 882     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),
 883     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,
 884
 885     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),
 886     .init_picture_params   = &vaapi_encode_h264_init_picture_params,
 887
 888     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),
 889     .init_slice_params     = &vaapi_encode_h264_init_slice_params,
 890
 891     .sequence_header_type  = VAEncPackedHeaderSequence,
 892     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,
 893
 894     .slice_header_type     = VAEncPackedHeaderH264_Slice,
 895     .write_slice_header    = &vaapi_encode_h264_write_slice_header,
 896
 897     .write_extra_header    = &vaapi_encode_h264_write_extra_header,
 898 };
 899
 900 static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
 901 {
 902     VAAPIEncodeContext      *ctx = avctx->priv_data;
 903     VAAPIEncodeH264Context *priv = avctx->priv_data;
 904
 905     ctx->codec = &vaapi_encode_type_h264;
 906
 907     if (avctx->profile == FF_PROFILE_UNKNOWN)
 908         avctx->profile = priv->profile;
 909     if (avctx->level == FF_LEVEL_UNKNOWN)
 910         avctx->level = priv->level;
 911     if (avctx->compression_level == FF_COMPRESSION_DEFAULT)
 912         avctx->compression_level = priv->quality;
 913
 914     // Reject unsupported profiles.
 915     switch (avctx->profile) {
 916     case FF_PROFILE_H264_BASELINE:
 917         av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile is not "
 918                "supported, using constrained baseline profile instead.\n");
 919         avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;
 920         break;
 921     case FF_PROFILE_H264_EXTENDED:
 922         av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "
 923                "is not supported.\n");
 924         return AVERROR_PATCHWELCOME;
 925     case FF_PROFILE_H264_HIGH_10:
 926     case FF_PROFILE_H264_HIGH_10_INTRA:
 927         av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "
 928                "are not supported.\n");
 929         return AVERROR_PATCHWELCOME;
 930     case FF_PROFILE_H264_HIGH_422:
 931     case FF_PROFILE_H264_HIGH_422_INTRA:
 932     case FF_PROFILE_H264_HIGH_444:
 933     case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
 934     case FF_PROFILE_H264_HIGH_444_INTRA:
 935     case FF_PROFILE_H264_CAVLC_444:
 936         av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "
 937                "are not supported.\n");
 938         return AVERROR_PATCHWELCOME;
 939     }
 940
 941     ctx->desired_packed_headers =
 942         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.
 943         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.
 944         VA_ENC_PACKED_HEADER_MISC;      // SEI.
 945
 946     ctx->surface_width  = FFALIGN(avctx->width,  16);
 947     ctx->surface_height = FFALIGN(avctx->height, 16);
 948
 949     return ff_vaapi_encode_init(avctx);
 950 }
 951
 952 static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)
 953 {
 954     VAAPIEncodeH264Context *priv = avctx->priv_data;
 955
 956     ff_cbs_close(&priv->cbc);
 957     av_freep(&priv->sei_identifier_string);
 958
 959     return ff_vaapi_encode_close(avctx);
 960 }
 961
 962 #define OFFSET(x) offsetof(VAAPIEncodeH264Context, x)
 963 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 964 static const AVOption vaapi_encode_h264_options[] = {
 965     VAAPI_ENCODE_COMMON_OPTIONS,
 966
 967     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
 968       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },
 969     { "quality", "Set encode quality (trades off against speed, higher is faster)",
 970       OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
 971     { "coder", "Entropy coder type",
 972       OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },
 973         { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
 974         { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
 975         { "vlc",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
 976         { "ac",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
 977
 978     { "aud", "Include AUD",
 979       OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
 980
 981     { "sei", "Set SEI to include",
 982       OFFSET(sei), AV_OPT_TYPE_FLAGS,
 983       { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },
 984       0, INT_MAX, FLAGS, "sei" },
 985     { "identifier", "Include encoder version identifier",
 986       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },
 987       INT_MIN, INT_MAX, FLAGS, "sei" },
 988     { "timing", "Include timing parameters (buffering_period and pic_timing)",
 989       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },
 990       INT_MIN, INT_MAX, FLAGS, "sei" },
 991     { "recovery_point", "Include recovery points where appropriate",
 992       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },
 993       INT_MIN, INT_MAX, FLAGS, "sei" },
 994
 995     { "profile", "Set profile (profile_idc and constraint_set*_flag)",
 996       OFFSET(profile), AV_OPT_TYPE_INT,
 997       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xffff, FLAGS, "profile" },
 998
 999 #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \
1000       { .i64 = value }, 0, 0, FLAGS, "profile"
1001     { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },
1002     { PROFILE("main",                 FF_PROFILE_H264_MAIN) },
1003     { PROFILE("high",                 FF_PROFILE_H264_HIGH) },
1004 #undef PROFILE
1005
1006     { "level", "Set level (level_idc)",
1007       OFFSET(level), AV_OPT_TYPE_INT,
1008       { .i64 = 51 }, 0x00, 0xff, FLAGS, "level" },
1009
1010 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
1011       { .i64 = value }, 0, 0, FLAGS, "level"
1012     { LEVEL("1",   10) },
1013     { LEVEL("1.1", 11) },
1014     { LEVEL("1.2", 12) },
1015     { LEVEL("1.3", 13) },
1016     { LEVEL("2",   20) },
1017     { LEVEL("2.1", 21) },
1018     { LEVEL("2.2", 22) },
1019     { LEVEL("3",   30) },
1020     { LEVEL("3.1", 31) },
1021     { LEVEL("3.2", 32) },
1022     { LEVEL("4",   40) },
1023     { LEVEL("4.1", 41) },
1024     { LEVEL("4.2", 42) },
1025     { LEVEL("5",   50) },
1026     { LEVEL("5.1", 51) },
1027     { LEVEL("5.2", 52) },
1028     { LEVEL("6",   60) },
1029     { LEVEL("6.1", 61) },
1030     { LEVEL("6.2", 62) },
1031 #undef LEVEL
1032
1033     { NULL },
1034 };
1035
1036 static const AVCodecDefault vaapi_encode_h264_defaults[] = {
1037     { "b",              "0"   },
1038     { "bf",             "2"   },
1039     { "g",              "120" },
1040     { "i_qfactor",      "1"   },
1041     { "i_qoffset",      "0"   },
1042     { "b_qfactor",      "6/5" },
1043     { "b_qoffset",      "0"   },
1044     { "qmin",           "-1"  },
1045     { "qmax",           "-1"  },
1046     { NULL },
1047 };
1048
1049 static const AVClass vaapi_encode_h264_class = {
1050     .class_name = "h264_vaapi",
1051     .item_name  = av_default_item_name,
1052     .option     = vaapi_encode_h264_options,
1053     .version    = LIBAVUTIL_VERSION_INT,
1054 };
1055
1056 AVCodec ff_h264_vaapi_encoder = {
1057     .name           = "h264_vaapi",
1058     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),
1059     .type           = AVMEDIA_TYPE_VIDEO,
1060     .id             = AV_CODEC_ID_H264,
1061     .priv_data_size = sizeof(VAAPIEncodeH264Context),
1062     .init           = &vaapi_encode_h264_init,
1063     .encode2        = &ff_vaapi_encode2,
1064     .close          = &vaapi_encode_h264_close,
1065     .priv_class     = &vaapi_encode_h264_class,
1066     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
1067     .defaults       = vaapi_encode_h264_defaults,
1068     .pix_fmts = (const enum AVPixelFormat[]) {
1069         AV_PIX_FMT_VAAPI,
1070         AV_PIX_FMT_NONE,
1071     },
1072     .wrapper_name   = "vaapi",
1073 };