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_levels.h"
  34 #include "h264_sei.h"
  35 #include "internal.h"
  36 #include "vaapi_encode.h"
  37
  38 enum {
  39     SEI_TIMING         = 0x01,
  40     SEI_IDENTIFIER     = 0x02,
  41     SEI_RECOVERY_POINT = 0x04,
  42 };
  43
  44 // Random (version 4) ISO 11578 UUID.
  45 static const uint8_t vaapi_encode_h264_sei_identifier_uuid[16] = {
  46     0x59, 0x94, 0x8b, 0x28, 0x11, 0xec, 0x45, 0xaf,
  47     0x96, 0x75, 0x19, 0xd4, 0x1f, 0xea, 0xa9, 0x4d,
  48 };
  49
  50 typedef struct VAAPIEncodeH264Context {
  51     VAAPIEncodeContext common;
  52
  53     // User options.
  54     int qp;
  55     int quality;
  56     int coder;
  57     int aud;
  58     int sei;
  59     int profile;
  60     int level;
  61
  62     // Derived settings.
  63     int mb_width;
  64     int mb_height;
  65
  66     int fixed_qp_idr;
  67     int fixed_qp_p;
  68     int fixed_qp_b;
  69
  70     // Stream state.
  71     int frame_num;
  72     int pic_order_cnt;
  73     int next_frame_num;
  74     int64_t last_idr_frame;
  75     int64_t idr_pic_count;
  76
  77     int primary_pic_type;
  78     int slice_type;
  79
  80     int cpb_delay;
  81     int dpb_delay;
  82
  83     // Writer structures.
  84     CodedBitstreamContext *cbc;
  85     CodedBitstreamFragment current_access_unit;
  86
  87     H264RawAUD   raw_aud;
  88     H264RawSPS   raw_sps;
  89     H264RawPPS   raw_pps;
  90     H264RawSEI   raw_sei;
  91     H264RawSlice raw_slice;
  92
  93     H264RawSEIBufferingPeriod      sei_buffering_period;
  94     H264RawSEIPicTiming            sei_pic_timing;
  95     H264RawSEIRecoveryPoint        sei_recovery_point;
  96     H264RawSEIUserDataUnregistered sei_identifier;
  97     char                          *sei_identifier_string;
  98
  99     int aud_needed;
 100     int sei_needed;
 101     int sei_cbr_workaround_needed;
 102 } VAAPIEncodeH264Context;
 103
 104
 105 static int vaapi_encode_h264_write_access_unit(AVCodecContext *avctx,
 106                                                char *data, size_t *data_len,
 107                                                CodedBitstreamFragment *au)
 108 {
 109     VAAPIEncodeH264Context *priv = avctx->priv_data;
 110     int err;
 111
 112     err = ff_cbs_write_fragment_data(priv->cbc, au);
 113     if (err < 0) {
 114         av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
 115         return err;
 116     }
 117
 118     if (*data_len < 8 * au->data_size - au->data_bit_padding) {
 119         av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
 120                "%zu < %zu.\n", *data_len,
 121                8 * au->data_size - au->data_bit_padding);
 122         return AVERROR(ENOSPC);
 123     }
 124
 125     memcpy(data, au->data, au->data_size);
 126     *data_len = 8 * au->data_size - au->data_bit_padding;
 127
 128     return 0;
 129 }
 130
 131 static int vaapi_encode_h264_add_nal(AVCodecContext *avctx,
 132                                      CodedBitstreamFragment *au,
 133                                      void *nal_unit)
 134 {
 135     VAAPIEncodeH264Context *priv = avctx->priv_data;
 136     H264RawNALUnitHeader *header = nal_unit;
 137     int err;
 138
 139     err = ff_cbs_insert_unit_content(priv->cbc, au, -1,
 140                                      header->nal_unit_type, nal_unit, NULL);
 141     if (err < 0) {
 142         av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: "
 143                "type = %d.\n", header->nal_unit_type);
 144         return err;
 145     }
 146
 147     return 0;
 148 }
 149
 150 static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,
 151                                                    char *data, size_t *data_len)
 152 {
 153     VAAPIEncodeH264Context *priv = avctx->priv_data;
 154     CodedBitstreamFragment   *au = &priv->current_access_unit;
 155     int err;
 156
 157     if (priv->aud_needed) {
 158         err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);
 159         if (err < 0)
 160             goto fail;
 161         priv->aud_needed = 0;
 162     }
 163
 164     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_sps);
 165     if (err < 0)
 166         goto fail;
 167
 168     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_pps);
 169     if (err < 0)
 170         goto fail;
 171
 172     err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 173 fail:
 174     ff_cbs_fragment_uninit(priv->cbc, au);
 175     return err;
 176 }
 177
 178 static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,
 179                                                 VAAPIEncodePicture *pic,
 180                                                 VAAPIEncodeSlice *slice,
 181                                                 char *data, size_t *data_len)
 182 {
 183     VAAPIEncodeH264Context *priv = avctx->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->raw_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->raw_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     VAAPIEncodeH264Context *priv = avctx->priv_data;
 210     CodedBitstreamFragment   *au = &priv->current_access_unit;
 211     int err, i;
 212
 213     if (priv->sei_needed) {
 214         H264RawSEI *sei = &priv->raw_sei;
 215
 216         if (priv->aud_needed) {
 217             err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);
 218             if (err < 0)
 219                 goto fail;
 220             priv->aud_needed = 0;
 221         }
 222
 223         *sei = (H264RawSEI) {
 224             .nal_unit_header = {
 225                 .nal_unit_type = H264_NAL_SEI,
 226             },
 227         };
 228
 229         i = 0;
 230
 231         if (priv->sei_needed & SEI_IDENTIFIER) {
 232             sei->payload[i].payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED;
 233             sei->payload[i].payload.user_data_unregistered = priv->sei_identifier;
 234             ++i;
 235         }
 236         if (priv->sei_needed & SEI_TIMING) {
 237             if (pic->type == PICTURE_TYPE_IDR) {
 238                 sei->payload[i].payload_type = H264_SEI_TYPE_BUFFERING_PERIOD;
 239                 sei->payload[i].payload.buffering_period = priv->sei_buffering_period;
 240                 ++i;
 241             }
 242             sei->payload[i].payload_type = H264_SEI_TYPE_PIC_TIMING;
 243             sei->payload[i].payload.pic_timing = priv->sei_pic_timing;
 244             ++i;
 245         }
 246         if (priv->sei_needed & SEI_RECOVERY_POINT) {
 247             sei->payload[i].payload_type = H264_SEI_TYPE_RECOVERY_POINT;
 248             sei->payload[i].payload.recovery_point = priv->sei_recovery_point;
 249             ++i;
 250         }
 251
 252         sei->payload_count = i;
 253         av_assert0(sei->payload_count > 0);
 254
 255         err = vaapi_encode_h264_add_nal(avctx, au, sei);
 256         if (err < 0)
 257             goto fail;
 258         priv->sei_needed = 0;
 259
 260         err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 261         if (err < 0)
 262             goto fail;
 263
 264         ff_cbs_fragment_uninit(priv->cbc, au);
 265
 266         *type = VAEncPackedHeaderRawData;
 267         return 0;
 268
 269 #if !CONFIG_VAAPI_1
 270     } else if (priv->sei_cbr_workaround_needed) {
 271         // Insert a zero-length header using the old SEI type.  This is
 272         // required to avoid triggering broken behaviour on Intel platforms
 273         // in CBR mode where an invalid SEI message is generated by the
 274         // driver and inserted into the stream.
 275         *data_len = 0;
 276         *type = VAEncPackedHeaderH264_SEI;
 277         priv->sei_cbr_workaround_needed = 0;
 278         return 0;
 279 #endif
 280
 281     } else {
 282         return AVERROR_EOF;
 283     }
 284
 285 fail:
 286     ff_cbs_fragment_uninit(priv->cbc, au);
 287     return err;
 288 }
 289
 290 static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
 291 {
 292     VAAPIEncodeContext                *ctx = avctx->priv_data;
 293     VAAPIEncodeH264Context           *priv = avctx->priv_data;
 294     H264RawSPS                        *sps = &priv->raw_sps;
 295     H264RawPPS                        *pps = &priv->raw_pps;
 296     VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
 297     VAEncPictureParameterBufferH264  *vpic = ctx->codec_picture_params;
 298     int dpb_frames;
 299
 300     memset(&priv->current_access_unit, 0,
 301            sizeof(priv->current_access_unit));
 302
 303     memset(sps, 0, sizeof(*sps));
 304     memset(pps, 0, sizeof(*pps));
 305
 306     sps->nal_unit_header.nal_ref_idc   = 3;
 307     sps->nal_unit_header.nal_unit_type = H264_NAL_SPS;
 308
 309     sps->profile_idc = avctx->profile & 0xff;
 310
 311     if (avctx->profile == FF_PROFILE_H264_CONSTRAINED_BASELINE ||
 312         avctx->profile == FF_PROFILE_H264_MAIN)
 313         sps->constraint_set1_flag = 1;
 314
 315     if (avctx->profile == FF_PROFILE_H264_HIGH)
 316         sps->constraint_set3_flag = ctx->gop_size == 1;
 317
 318     if (avctx->profile == FF_PROFILE_H264_MAIN ||
 319         avctx->profile == FF_PROFILE_H264_HIGH) {
 320         sps->constraint_set4_flag = 1;
 321         sps->constraint_set5_flag = ctx->b_per_p == 0;
 322     }
 323
 324     if (ctx->gop_size == 1)
 325         dpb_frames = 0;
 326     else
 327         dpb_frames = 1 + (ctx->b_per_p > 0);
 328
 329     if (avctx->level != FF_LEVEL_UNKNOWN) {
 330         sps->level_idc = avctx->level;
 331     } else {
 332         const H264LevelDescriptor *level;
 333
 334         level = ff_h264_guess_level(sps->profile_idc,
 335                                     avctx->bit_rate,
 336                                     priv->mb_width  * 16,
 337                                     priv->mb_height * 16,
 338                                     dpb_frames);
 339         if (level) {
 340             av_log(avctx, AV_LOG_VERBOSE, "Using level %s.\n", level->name);
 341             if (level->constraint_set3_flag)
 342                 sps->constraint_set3_flag = 1;
 343             sps->level_idc = level->level_idc;
 344         } else {
 345             av_log(avctx, AV_LOG_WARNING, "Stream will not conform "
 346                    "to any level: using level 6.2.\n");
 347             sps->level_idc = 62;
 348         }
 349     }
 350
 351     sps->seq_parameter_set_id = 0;
 352     sps->chroma_format_idc    = 1;
 353
 354     sps->log2_max_frame_num_minus4 = 4;
 355     sps->pic_order_cnt_type        = 0;
 356     sps->log2_max_pic_order_cnt_lsb_minus4 =
 357         av_clip(av_log2(ctx->b_per_p + 1) - 2, 0, 12);
 358
 359     sps->max_num_ref_frames = dpb_frames;
 360
 361     sps->pic_width_in_mbs_minus1        = priv->mb_width  - 1;
 362     sps->pic_height_in_map_units_minus1 = priv->mb_height - 1;
 363
 364     sps->frame_mbs_only_flag = 1;
 365     sps->direct_8x8_inference_flag = 1;
 366
 367     if (avctx->width  != 16 * priv->mb_width ||
 368         avctx->height != 16 * priv->mb_height) {
 369         sps->frame_cropping_flag = 1;
 370
 371         sps->frame_crop_left_offset   = 0;
 372         sps->frame_crop_right_offset  =
 373             (16 * priv->mb_width - avctx->width) / 2;
 374         sps->frame_crop_top_offset    = 0;
 375         sps->frame_crop_bottom_offset =
 376             (16 * priv->mb_height - avctx->height) / 2;
 377     } else {
 378         sps->frame_cropping_flag = 0;
 379     }
 380
 381     sps->vui_parameters_present_flag = 1;
 382
 383     if (avctx->sample_aspect_ratio.num != 0 &&
 384         avctx->sample_aspect_ratio.den != 0) {
 385         static const AVRational sar_idc[] = {
 386             {   0,  0 },
 387             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },
 388             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },
 389             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },
 390             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },
 391         };
 392         int num, den, i;
 393         av_reduce(&num, &den, avctx->sample_aspect_ratio.num,
 394                   avctx->sample_aspect_ratio.den, 65535);
 395         for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) {
 396             if (num == sar_idc[i].num &&
 397                 den == sar_idc[i].den) {
 398                 sps->vui.aspect_ratio_idc = i;
 399                 break;
 400             }
 401         }
 402         if (i >= FF_ARRAY_ELEMS(sar_idc)) {
 403             sps->vui.aspect_ratio_idc = 255;
 404             sps->vui.sar_width  = num;
 405             sps->vui.sar_height = den;
 406         }
 407         sps->vui.aspect_ratio_info_present_flag = 1;
 408     }
 409
 410     if (avctx->color_range     != AVCOL_RANGE_UNSPECIFIED ||
 411         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 412         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 413         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 414         sps->vui.video_signal_type_present_flag = 1;
 415         sps->vui.video_format      = 5; // Unspecified.
 416         sps->vui.video_full_range_flag =
 417             avctx->color_range == AVCOL_RANGE_JPEG;
 418
 419         if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 420             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 421             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 422             sps->vui.colour_description_present_flag = 1;
 423             sps->vui.colour_primaries         = avctx->color_primaries;
 424             sps->vui.transfer_characteristics = avctx->color_trc;
 425             sps->vui.matrix_coefficients      = avctx->colorspace;
 426         }
 427     } else {
 428         sps->vui.video_format             = 5;
 429         sps->vui.video_full_range_flag    = 0;
 430         sps->vui.colour_primaries         = avctx->color_primaries;
 431         sps->vui.transfer_characteristics = avctx->color_trc;
 432         sps->vui.matrix_coefficients      = avctx->colorspace;
 433     }
 434
 435     if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
 436         sps->vui.chroma_loc_info_present_flag = 1;
 437         sps->vui.chroma_sample_loc_type_top_field    =
 438         sps->vui.chroma_sample_loc_type_bottom_field =
 439             avctx->chroma_sample_location - 1;
 440     }
 441
 442     sps->vui.timing_info_present_flag = 1;
 443     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
 444         sps->vui.num_units_in_tick = avctx->framerate.den;
 445         sps->vui.time_scale        = 2 * avctx->framerate.num;
 446         sps->vui.fixed_frame_rate_flag = 1;
 447     } else {
 448         sps->vui.num_units_in_tick = avctx->time_base.num;
 449         sps->vui.time_scale        = 2 * avctx->time_base.den;
 450         sps->vui.fixed_frame_rate_flag = 0;
 451     }
 452
 453     if (priv->sei & SEI_TIMING) {
 454         H264RawHRD *hrd = &sps->vui.nal_hrd_parameters;
 455         H264RawSEIBufferingPeriod *bp = &priv->sei_buffering_period;
 456
 457         sps->vui.nal_hrd_parameters_present_flag = 1;
 458
 459         hrd->cpb_cnt_minus1 = 0;
 460
 461         // Try to scale these to a sensible range so that the
 462         // golomb encode of the value is not overlong.
 463         hrd->bit_rate_scale =
 464             av_clip_uintp2(av_log2(ctx->va_bit_rate) - 15 - 6, 4);
 465         hrd->bit_rate_value_minus1[0] =
 466             (ctx->va_bit_rate >> hrd->bit_rate_scale + 6) - 1;
 467
 468         hrd->cpb_size_scale =
 469             av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4);
 470         hrd->cpb_size_value_minus1[0] =
 471             (ctx->hrd_params.hrd.buffer_size >> hrd->cpb_size_scale + 4) - 1;
 472
 473         // CBR mode as defined for the HRD cannot be achieved without filler
 474         // data, so this flag cannot be set even with VAAPI CBR modes.
 475         hrd->cbr_flag[0] = 0;
 476
 477         hrd->initial_cpb_removal_delay_length_minus1 = 23;
 478         hrd->cpb_removal_delay_length_minus1         = 23;
 479         hrd->dpb_output_delay_length_minus1          = 7;
 480         hrd->time_offset_length                      = 0;
 481
 482         bp->seq_parameter_set_id = sps->seq_parameter_set_id;
 483
 484         // This calculation can easily overflow 32 bits.
 485         bp->nal.initial_cpb_removal_delay[0] = 90000 *
 486             (uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness /
 487             ctx->hrd_params.hrd.buffer_size;
 488         bp->nal.initial_cpb_removal_delay_offset[0] = 0;
 489     } else {
 490         sps->vui.nal_hrd_parameters_present_flag = 0;
 491         sps->vui.low_delay_hrd_flag = 1 - sps->vui.fixed_frame_rate_flag;
 492     }
 493
 494     sps->vui.bitstream_restriction_flag    = 1;
 495     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;
 496     sps->vui.log2_max_mv_length_horizontal = 15;
 497     sps->vui.log2_max_mv_length_vertical   = 15;
 498     sps->vui.max_num_reorder_frames        = (ctx->b_per_p > 0);
 499     sps->vui.max_dec_frame_buffering       = sps->max_num_ref_frames;
 500
 501     pps->nal_unit_header.nal_ref_idc = 3;
 502     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;
 503
 504     pps->pic_parameter_set_id = 0;
 505     pps->seq_parameter_set_id = 0;
 506
 507     pps->entropy_coding_mode_flag =
 508         !(sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 509           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 510           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);
 511     if (!priv->coder && pps->entropy_coding_mode_flag)
 512         pps->entropy_coding_mode_flag = 0;
 513
 514     pps->num_ref_idx_l0_default_active_minus1 = 0;
 515     pps->num_ref_idx_l1_default_active_minus1 = 0;
 516
 517     pps->pic_init_qp_minus26 = priv->fixed_qp_idr - 26;
 518
 519     if (sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 520         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 521         sps->profile_idc == FF_PROFILE_H264_MAIN) {
 522         pps->more_rbsp_data = 0;
 523     } else {
 524         pps->more_rbsp_data = 1;
 525
 526         pps->transform_8x8_mode_flag = 1;
 527     }
 528
 529     *vseq = (VAEncSequenceParameterBufferH264) {
 530         .seq_parameter_set_id = sps->seq_parameter_set_id,
 531         .level_idc        = sps->level_idc,
 532         .intra_period     = ctx->gop_size,
 533         .intra_idr_period = ctx->gop_size,
 534         .ip_period        = ctx->b_per_p + 1,
 535
 536         .bits_per_second       = ctx->va_bit_rate,
 537         .max_num_ref_frames    = sps->max_num_ref_frames,
 538         .picture_width_in_mbs  = sps->pic_width_in_mbs_minus1 + 1,
 539         .picture_height_in_mbs = sps->pic_height_in_map_units_minus1 + 1,
 540
 541         .seq_fields.bits = {
 542             .chroma_format_idc                 = sps->chroma_format_idc,
 543             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,
 544             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,
 545             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,
 546             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,
 547             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,
 548             .pic_order_cnt_type                = sps->pic_order_cnt_type,
 549             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,
 550             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,
 551         },
 552
 553         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,
 554         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,
 555
 556         .frame_cropping_flag      = sps->frame_cropping_flag,
 557         .frame_crop_left_offset   = sps->frame_crop_left_offset,
 558         .frame_crop_right_offset  = sps->frame_crop_right_offset,
 559         .frame_crop_top_offset    = sps->frame_crop_top_offset,
 560         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,
 561
 562         .vui_parameters_present_flag = sps->vui_parameters_present_flag,
 563
 564         .vui_fields.bits = {
 565             .aspect_ratio_info_present_flag = sps->vui.aspect_ratio_info_present_flag,
 566             .timing_info_present_flag       = sps->vui.timing_info_present_flag,
 567             .bitstream_restriction_flag     = sps->vui.bitstream_restriction_flag,
 568             .log2_max_mv_length_horizontal  = sps->vui.log2_max_mv_length_horizontal,
 569             .log2_max_mv_length_vertical    = sps->vui.log2_max_mv_length_vertical,
 570         },
 571
 572         .aspect_ratio_idc  = sps->vui.aspect_ratio_idc,
 573         .sar_width         = sps->vui.sar_width,
 574         .sar_height        = sps->vui.sar_height,
 575         .num_units_in_tick = sps->vui.num_units_in_tick,
 576         .time_scale        = sps->vui.time_scale,
 577     };
 578
 579     *vpic = (VAEncPictureParameterBufferH264) {
 580         .CurrPic = {
 581             .picture_id = VA_INVALID_ID,
 582             .flags      = VA_PICTURE_H264_INVALID,
 583         },
 584
 585         .coded_buf = VA_INVALID_ID,
 586
 587         .pic_parameter_set_id = pps->pic_parameter_set_id,
 588         .seq_parameter_set_id = pps->seq_parameter_set_id,
 589
 590         .pic_init_qp                  = pps->pic_init_qp_minus26 + 26,
 591         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,
 592         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,
 593
 594         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,
 595         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,
 596
 597         .pic_fields.bits = {
 598             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,
 599             .weighted_pred_flag              = pps->weighted_pred_flag,
 600             .weighted_bipred_idc             = pps->weighted_bipred_idc,
 601             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,
 602             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,
 603             .deblocking_filter_control_present_flag =
 604                 pps->deblocking_filter_control_present_flag,
 605             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,
 606             .pic_order_present_flag          =
 607                 pps->bottom_field_pic_order_in_frame_present_flag,
 608             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,
 609         },
 610     };
 611
 612     return 0;
 613 }
 614
 615 static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
 616                                                  VAAPIEncodePicture *pic)
 617 {
 618     VAAPIEncodeContext               *ctx = avctx->priv_data;
 619     VAAPIEncodeH264Context          *priv = avctx->priv_data;
 620     H264RawSPS                       *sps = &priv->raw_sps;
 621     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 622     int i;
 623
 624     memset(&priv->current_access_unit, 0,
 625            sizeof(priv->current_access_unit));
 626
 627     if (pic->type == PICTURE_TYPE_IDR) {
 628         av_assert0(pic->display_order == pic->encode_order);
 629         priv->frame_num      = 0;
 630         priv->next_frame_num = 1;
 631         priv->cpb_delay      = 0;
 632         priv->last_idr_frame = pic->display_order;
 633         ++priv->idr_pic_count;
 634
 635         priv->slice_type       = 7;
 636         priv->primary_pic_type = 0;
 637     } else {
 638         priv->frame_num      = priv->next_frame_num;
 639
 640         if (pic->type != PICTURE_TYPE_B) {
 641             // Reference picture, so frame_num advances.
 642             priv->next_frame_num = (priv->frame_num + 1) &
 643                 ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
 644         }
 645         ++priv->cpb_delay;
 646
 647         if (pic->type == PICTURE_TYPE_I) {
 648             priv->slice_type       = 7;
 649             priv->primary_pic_type = 0;
 650         } else if (pic->type == PICTURE_TYPE_P) {
 651             priv->slice_type       = 5;
 652             priv->primary_pic_type = 1;
 653         } else {
 654             priv->slice_type       = 6;
 655             priv->primary_pic_type = 2;
 656         }
 657     }
 658     priv->pic_order_cnt = pic->display_order - priv->last_idr_frame;
 659     priv->dpb_delay     = pic->display_order - pic->encode_order + 1;
 660
 661     if (priv->aud) {
 662         priv->aud_needed = 1;
 663         priv->raw_aud = (H264RawAUD) {
 664             .nal_unit_header = {
 665                 .nal_unit_type = H264_NAL_AUD,
 666             },
 667             .primary_pic_type  = priv->primary_pic_type,
 668         };
 669     } else {
 670         priv->aud_needed = 0;
 671     }
 672
 673     priv->sei_needed = 0;
 674
 675     if (priv->sei & SEI_IDENTIFIER && pic->encode_order == 0)
 676         priv->sei_needed |= SEI_IDENTIFIER;
 677 #if !CONFIG_VAAPI_1
 678     if (ctx->va_rc_mode == VA_RC_CBR)
 679         priv->sei_cbr_workaround_needed = 1;
 680 #endif
 681
 682     if (priv->sei & SEI_TIMING) {
 683         priv->sei_pic_timing = (H264RawSEIPicTiming) {
 684             .cpb_removal_delay = 2 * priv->cpb_delay,
 685             .dpb_output_delay  = 2 * priv->dpb_delay,
 686         };
 687
 688         priv->sei_needed |= SEI_TIMING;
 689     }
 690
 691     if (priv->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) {
 692         priv->sei_recovery_point = (H264RawSEIRecoveryPoint) {
 693             .recovery_frame_cnt = 0,
 694             .exact_match_flag   = 1,
 695             .broken_link_flag   = ctx->b_per_p > 0,
 696         };
 697
 698         priv->sei_needed |= SEI_RECOVERY_POINT;
 699     }
 700
 701     vpic->CurrPic = (VAPictureH264) {
 702         .picture_id          = pic->recon_surface,
 703         .frame_idx           = priv->frame_num,
 704         .flags               = 0,
 705         .TopFieldOrderCnt    = priv->pic_order_cnt,
 706         .BottomFieldOrderCnt = priv->pic_order_cnt,
 707     };
 708
 709     for (i = 0; i < pic->nb_refs; i++) {
 710         VAAPIEncodePicture *ref = pic->refs[i];
 711         unsigned int frame_num = (ref->encode_order - priv->last_idr_frame) &
 712             ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
 713         unsigned int pic_order_cnt = ref->display_order - priv->last_idr_frame;
 714
 715         av_assert0(ref && ref->encode_order < pic->encode_order);
 716         vpic->ReferenceFrames[i] = (VAPictureH264) {
 717             .picture_id          = ref->recon_surface,
 718             .frame_idx           = frame_num,
 719             .flags               = VA_PICTURE_H264_SHORT_TERM_REFERENCE,
 720             .TopFieldOrderCnt    = pic_order_cnt,
 721             .BottomFieldOrderCnt = pic_order_cnt,
 722         };
 723     }
 724     for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
 725         vpic->ReferenceFrames[i] = (VAPictureH264) {
 726             .picture_id = VA_INVALID_ID,
 727             .flags      = VA_PICTURE_H264_INVALID,
 728         };
 729     }
 730
 731     vpic->coded_buf = pic->output_buffer;
 732
 733     vpic->frame_num = priv->frame_num;
 734
 735     vpic->pic_fields.bits.idr_pic_flag       = (pic->type == PICTURE_TYPE_IDR);
 736     vpic->pic_fields.bits.reference_pic_flag = (pic->type != PICTURE_TYPE_B);
 737
 738     return 0;
 739 }
 740
 741 static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,
 742                                                VAAPIEncodePicture *pic,
 743                                                VAAPIEncodeSlice *slice)
 744 {
 745     VAAPIEncodeH264Context          *priv = avctx->priv_data;
 746     H264RawSPS                       *sps = &priv->raw_sps;
 747     H264RawPPS                       *pps = &priv->raw_pps;
 748     H264RawSliceHeader                *sh = &priv->raw_slice.header;
 749     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 750     VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
 751     int i;
 752
 753     if (pic->type == PICTURE_TYPE_IDR) {
 754         sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;
 755         sh->nal_unit_header.nal_ref_idc   = 3;
 756     } else {
 757         sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;
 758         sh->nal_unit_header.nal_ref_idc   = pic->type != PICTURE_TYPE_B;
 759     }
 760
 761     sh->first_mb_in_slice = slice->block_start;
 762     sh->slice_type        = priv->slice_type;
 763
 764     sh->pic_parameter_set_id = pps->pic_parameter_set_id;
 765
 766     sh->frame_num  = priv->frame_num;
 767     sh->idr_pic_id = priv->idr_pic_count;
 768
 769     sh->pic_order_cnt_lsb = priv->pic_order_cnt &
 770         ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);
 771
 772     sh->direct_spatial_mv_pred_flag = 1;
 773
 774     if (pic->type == PICTURE_TYPE_B)
 775         sh->slice_qp_delta = priv->fixed_qp_b - (pps->pic_init_qp_minus26 + 26);
 776     else if (pic->type == PICTURE_TYPE_P)
 777         sh->slice_qp_delta = priv->fixed_qp_p - (pps->pic_init_qp_minus26 + 26);
 778     else
 779         sh->slice_qp_delta = priv->fixed_qp_idr - (pps->pic_init_qp_minus26 + 26);
 780
 781
 782     vslice->macroblock_address = slice->block_start;
 783     vslice->num_macroblocks    = slice->block_size;
 784
 785     vslice->macroblock_info = VA_INVALID_ID;
 786
 787     vslice->slice_type           = sh->slice_type % 5;
 788     vslice->pic_parameter_set_id = sh->pic_parameter_set_id;
 789     vslice->idr_pic_id           = sh->idr_pic_id;
 790
 791     vslice->pic_order_cnt_lsb = sh->pic_order_cnt_lsb;
 792
 793     vslice->direct_spatial_mv_pred_flag = sh->direct_spatial_mv_pred_flag;
 794
 795     for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {
 796         vslice->RefPicList0[i].picture_id = VA_INVALID_ID;
 797         vslice->RefPicList0[i].flags      = VA_PICTURE_H264_INVALID;
 798         vslice->RefPicList1[i].picture_id = VA_INVALID_ID;
 799         vslice->RefPicList1[i].flags      = VA_PICTURE_H264_INVALID;
 800     }
 801
 802     av_assert0(pic->nb_refs <= 2);
 803     if (pic->nb_refs >= 1) {
 804         // Backward reference for P- or B-frame.
 805         av_assert0(pic->type == PICTURE_TYPE_P ||
 806                    pic->type == PICTURE_TYPE_B);
 807         vslice->RefPicList0[0] = vpic->ReferenceFrames[0];
 808     }
 809     if (pic->nb_refs >= 2) {
 810         // Forward reference for B-frame.
 811         av_assert0(pic->type == PICTURE_TYPE_B);
 812         vslice->RefPicList1[0] = vpic->ReferenceFrames[1];
 813     }
 814
 815     vslice->slice_qp_delta = sh->slice_qp_delta;
 816
 817     return 0;
 818 }
 819
 820 static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)
 821 {
 822     VAAPIEncodeContext      *ctx = avctx->priv_data;
 823     VAAPIEncodeH264Context *priv = avctx->priv_data;
 824     int err;
 825
 826     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_H264, avctx);
 827     if (err < 0)
 828         return err;
 829
 830     priv->mb_width  = FFALIGN(avctx->width,  16) / 16;
 831     priv->mb_height = FFALIGN(avctx->height, 16) / 16;
 832
 833     if (ctx->va_rc_mode == VA_RC_CQP) {
 834         priv->fixed_qp_p = priv->qp;
 835         if (avctx->i_quant_factor > 0.0)
 836             priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +
 837                                         avctx->i_quant_offset) + 0.5);
 838         else
 839             priv->fixed_qp_idr = priv->fixed_qp_p;
 840         if (avctx->b_quant_factor > 0.0)
 841             priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +
 842                                       avctx->b_quant_offset) + 0.5);
 843         else
 844             priv->fixed_qp_b = priv->fixed_qp_p;
 845
 846         priv->sei &= ~SEI_TIMING;
 847
 848         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
 849                "%d / %d / %d for IDR- / P- / B-frames.\n",
 850                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
 851
 852     } else if (ctx->va_rc_mode == VA_RC_CBR ||
 853                ctx->va_rc_mode == VA_RC_VBR) {
 854         // These still need to be  set for pic_init_qp/slice_qp_delta.
 855         priv->fixed_qp_idr = 26;
 856         priv->fixed_qp_p   = 26;
 857         priv->fixed_qp_b   = 26;
 858
 859     } else {
 860         av_assert0(0 && "Invalid RC mode.");
 861     }
 862
 863     if (priv->sei & SEI_IDENTIFIER) {
 864         const char *lavc  = LIBAVCODEC_IDENT;
 865         const char *vaapi = VA_VERSION_S;
 866         const char *driver;
 867         int len;
 868
 869         memcpy(priv->sei_identifier.uuid_iso_iec_11578,
 870                vaapi_encode_h264_sei_identifier_uuid,
 871                sizeof(priv->sei_identifier.uuid_iso_iec_11578));
 872
 873         driver = vaQueryVendorString(ctx->hwctx->display);
 874         if (!driver)
 875             driver = "unknown driver";
 876
 877         len = snprintf(NULL, 0, "%s / VAAPI %s / %s", lavc, vaapi, driver);
 878         if (len >= 0) {
 879             priv->sei_identifier_string = av_malloc(len + 1);
 880             if (!priv->sei_identifier_string)
 881                 return AVERROR(ENOMEM);
 882
 883             snprintf(priv->sei_identifier_string, len + 1,
 884                      "%s / VAAPI %s / %s", lavc, vaapi, driver);
 885
 886             priv->sei_identifier.data        = priv->sei_identifier_string;
 887             priv->sei_identifier.data_length = len + 1;
 888         }
 889     }
 890
 891     return 0;
 892 }
 893
 894 static const VAAPIEncodeProfile vaapi_encode_h264_profiles[] = {
 895     { FF_PROFILE_H264_HIGH, 8, 3, 1, 1, VAProfileH264High },
 896     { FF_PROFILE_H264_MAIN, 8, 3, 1, 1, VAProfileH264Main },
 897     { FF_PROFILE_H264_CONSTRAINED_BASELINE,
 898                             8, 3, 1, 1, VAProfileH264ConstrainedBaseline },
 899     { FF_PROFILE_UNKNOWN }
 900 };
 901
 902 static const VAAPIEncodeType vaapi_encode_type_h264 = {
 903     .profiles              = vaapi_encode_h264_profiles,
 904
 905     .flags                 = FLAG_SLICE_CONTROL,
 906
 907     .configure             = &vaapi_encode_h264_configure,
 908
 909     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),
 910     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,
 911
 912     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),
 913     .init_picture_params   = &vaapi_encode_h264_init_picture_params,
 914
 915     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),
 916     .init_slice_params     = &vaapi_encode_h264_init_slice_params,
 917
 918     .sequence_header_type  = VAEncPackedHeaderSequence,
 919     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,
 920
 921     .slice_header_type     = VAEncPackedHeaderH264_Slice,
 922     .write_slice_header    = &vaapi_encode_h264_write_slice_header,
 923
 924     .write_extra_header    = &vaapi_encode_h264_write_extra_header,
 925 };
 926
 927 static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
 928 {
 929     VAAPIEncodeContext      *ctx = avctx->priv_data;
 930     VAAPIEncodeH264Context *priv = avctx->priv_data;
 931
 932     ctx->codec = &vaapi_encode_type_h264;
 933
 934     if (avctx->profile == FF_PROFILE_UNKNOWN)
 935         avctx->profile = priv->profile;
 936     if (avctx->level == FF_LEVEL_UNKNOWN)
 937         avctx->level = priv->level;
 938     if (avctx->compression_level == FF_COMPRESSION_DEFAULT)
 939         avctx->compression_level = priv->quality;
 940
 941     // Reject unsupported profiles.
 942     switch (avctx->profile) {
 943     case FF_PROFILE_H264_BASELINE:
 944         av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile is not "
 945                "supported, using constrained baseline profile instead.\n");
 946         avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;
 947         break;
 948     case FF_PROFILE_H264_EXTENDED:
 949         av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "
 950                "is not supported.\n");
 951         return AVERROR_PATCHWELCOME;
 952     case FF_PROFILE_H264_HIGH_10:
 953     case FF_PROFILE_H264_HIGH_10_INTRA:
 954         av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "
 955                "are not supported.\n");
 956         return AVERROR_PATCHWELCOME;
 957     case FF_PROFILE_H264_HIGH_422:
 958     case FF_PROFILE_H264_HIGH_422_INTRA:
 959     case FF_PROFILE_H264_HIGH_444:
 960     case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
 961     case FF_PROFILE_H264_HIGH_444_INTRA:
 962     case FF_PROFILE_H264_CAVLC_444:
 963         av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "
 964                "are not supported.\n");
 965         return AVERROR_PATCHWELCOME;
 966     }
 967
 968     if (avctx->level != FF_LEVEL_UNKNOWN && avctx->level & ~0xff) {
 969         av_log(avctx, AV_LOG_ERROR, "Invalid level %d: must fit "
 970                "in 8-bit unsigned integer.\n", avctx->level);
 971         return AVERROR(EINVAL);
 972     }
 973
 974     ctx->desired_packed_headers =
 975         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.
 976         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.
 977         VA_ENC_PACKED_HEADER_MISC;      // SEI.
 978
 979     ctx->surface_width  = FFALIGN(avctx->width,  16);
 980     ctx->surface_height = FFALIGN(avctx->height, 16);
 981
 982     ctx->slice_block_height = ctx->slice_block_width = 16;
 983
 984     return ff_vaapi_encode_init(avctx);
 985 }
 986
 987 static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)
 988 {
 989     VAAPIEncodeH264Context *priv = avctx->priv_data;
 990
 991     ff_cbs_close(&priv->cbc);
 992     av_freep(&priv->sei_identifier_string);
 993
 994     return ff_vaapi_encode_close(avctx);
 995 }
 996
 997 #define OFFSET(x) offsetof(VAAPIEncodeH264Context, x)
 998 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 999 static const AVOption vaapi_encode_h264_options[] = {
1000     VAAPI_ENCODE_COMMON_OPTIONS,
1001
1002     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
1003       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },
1004     { "quality", "Set encode quality (trades off against speed, higher is faster)",
1005       OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
1006     { "coder", "Entropy coder type",
1007       OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },
1008         { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1009         { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1010         { "vlc",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1011         { "ac",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1012
1013     { "aud", "Include AUD",
1014       OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
1015
1016     { "sei", "Set SEI to include",
1017       OFFSET(sei), AV_OPT_TYPE_FLAGS,
1018       { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },
1019       0, INT_MAX, FLAGS, "sei" },
1020     { "identifier", "Include encoder version identifier",
1021       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },
1022       INT_MIN, INT_MAX, FLAGS, "sei" },
1023     { "timing", "Include timing parameters (buffering_period and pic_timing)",
1024       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },
1025       INT_MIN, INT_MAX, FLAGS, "sei" },
1026     { "recovery_point", "Include recovery points where appropriate",
1027       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },
1028       INT_MIN, INT_MAX, FLAGS, "sei" },
1029
1030     { "profile", "Set profile (profile_idc and constraint_set*_flag)",
1031       OFFSET(profile), AV_OPT_TYPE_INT,
1032       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xffff, FLAGS, "profile" },
1033
1034 #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \
1035       { .i64 = value }, 0, 0, FLAGS, "profile"
1036     { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },
1037     { PROFILE("main",                 FF_PROFILE_H264_MAIN) },
1038     { PROFILE("high",                 FF_PROFILE_H264_HIGH) },
1039 #undef PROFILE
1040
1041     { "level", "Set level (level_idc)",
1042       OFFSET(level), AV_OPT_TYPE_INT,
1043       { .i64 = FF_LEVEL_UNKNOWN }, FF_LEVEL_UNKNOWN, 0xff, FLAGS, "level" },
1044
1045 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
1046       { .i64 = value }, 0, 0, FLAGS, "level"
1047     { LEVEL("1",   10) },
1048     { LEVEL("1.1", 11) },
1049     { LEVEL("1.2", 12) },
1050     { LEVEL("1.3", 13) },
1051     { LEVEL("2",   20) },
1052     { LEVEL("2.1", 21) },
1053     { LEVEL("2.2", 22) },
1054     { LEVEL("3",   30) },
1055     { LEVEL("3.1", 31) },
1056     { LEVEL("3.2", 32) },
1057     { LEVEL("4",   40) },
1058     { LEVEL("4.1", 41) },
1059     { LEVEL("4.2", 42) },
1060     { LEVEL("5",   50) },
1061     { LEVEL("5.1", 51) },
1062     { LEVEL("5.2", 52) },
1063     { LEVEL("6",   60) },
1064     { LEVEL("6.1", 61) },
1065     { LEVEL("6.2", 62) },
1066 #undef LEVEL
1067
1068     { NULL },
1069 };
1070
1071 static const AVCodecDefault vaapi_encode_h264_defaults[] = {
1072     { "b",              "0"   },
1073     { "bf",             "2"   },
1074     { "g",              "120" },
1075     { "i_qfactor",      "1"   },
1076     { "i_qoffset",      "0"   },
1077     { "b_qfactor",      "6/5" },
1078     { "b_qoffset",      "0"   },
1079     { "qmin",           "-1"  },
1080     { "qmax",           "-1"  },
1081     { NULL },
1082 };
1083
1084 static const AVClass vaapi_encode_h264_class = {
1085     .class_name = "h264_vaapi",
1086     .item_name  = av_default_item_name,
1087     .option     = vaapi_encode_h264_options,
1088     .version    = LIBAVUTIL_VERSION_INT,
1089 };
1090
1091 AVCodec ff_h264_vaapi_encoder = {
1092     .name           = "h264_vaapi",
1093     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),
1094     .type           = AVMEDIA_TYPE_VIDEO,
1095     .id             = AV_CODEC_ID_H264,
1096     .priv_data_size = sizeof(VAAPIEncodeH264Context),
1097     .init           = &vaapi_encode_h264_init,
1098     .encode2        = &ff_vaapi_encode2,
1099     .close          = &vaapi_encode_h264_close,
1100     .priv_class     = &vaapi_encode_h264_class,
1101     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
1102     .defaults       = vaapi_encode_h264_defaults,
1103     .pix_fmts = (const enum AVPixelFormat[]) {
1104         AV_PIX_FMT_VAAPI,
1105         AV_PIX_FMT_NONE,
1106     },
1107     .wrapper_name   = "vaapi",
1108 };