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   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     sps->constraint_set1_flag =
 309         !!(avctx->profile & FF_PROFILE_H264_CONSTRAINED);
 310     sps->constraint_set3_flag =
 311         !!(avctx->profile & FF_PROFILE_H264_INTRA);
 312
 313     sps->level_idc = avctx->level;
 314
 315     sps->seq_parameter_set_id = 0;
 316     sps->chroma_format_idc    = 1;
 317
 318     sps->log2_max_frame_num_minus4 = 4;
 319     sps->pic_order_cnt_type        = 0;
 320     sps->log2_max_pic_order_cnt_lsb_minus4 =
 321         av_clip(av_log2(ctx->b_per_p + 1) - 2, 0, 12);
 322
 323     sps->max_num_ref_frames =
 324         (avctx->profile & FF_PROFILE_H264_INTRA) ? 0 :
 325         1 + (ctx->b_per_p > 0);
 326
 327     sps->pic_width_in_mbs_minus1        = priv->mb_width  - 1;
 328     sps->pic_height_in_map_units_minus1 = priv->mb_height - 1;
 329
 330     sps->frame_mbs_only_flag = 1;
 331     sps->direct_8x8_inference_flag = 1;
 332
 333     if (avctx->width  != 16 * priv->mb_width ||
 334         avctx->height != 16 * priv->mb_height) {
 335         sps->frame_cropping_flag = 1;
 336
 337         sps->frame_crop_left_offset   = 0;
 338         sps->frame_crop_right_offset  =
 339             (16 * priv->mb_width - avctx->width) / 2;
 340         sps->frame_crop_top_offset    = 0;
 341         sps->frame_crop_bottom_offset =
 342             (16 * priv->mb_height - avctx->height) / 2;
 343     } else {
 344         sps->frame_cropping_flag = 0;
 345     }
 346
 347     sps->vui_parameters_present_flag = 1;
 348
 349     if (avctx->sample_aspect_ratio.num != 0 &&
 350         avctx->sample_aspect_ratio.den != 0) {
 351         static const AVRational sar_idc[] = {
 352             {   0,  0 },
 353             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },
 354             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },
 355             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },
 356             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },
 357         };
 358         int i;
 359         for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) {
 360             if (avctx->sample_aspect_ratio.num == sar_idc[i].num &&
 361                 avctx->sample_aspect_ratio.den == sar_idc[i].den) {
 362                 sps->vui.aspect_ratio_idc = i;
 363                 break;
 364             }
 365         }
 366         if (i >= FF_ARRAY_ELEMS(sar_idc)) {
 367             sps->vui.aspect_ratio_idc = 255;
 368             sps->vui.sar_width  = avctx->sample_aspect_ratio.num;
 369             sps->vui.sar_height = avctx->sample_aspect_ratio.den;
 370         }
 371         sps->vui.aspect_ratio_info_present_flag = 1;
 372     }
 373
 374     if (avctx->color_range     != AVCOL_RANGE_UNSPECIFIED ||
 375         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 376         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 377         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 378         sps->vui.video_signal_type_present_flag = 1;
 379         sps->vui.video_format      = 5; // Unspecified.
 380         sps->vui.video_full_range_flag =
 381             avctx->color_range == AVCOL_RANGE_JPEG;
 382
 383         if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 384             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 385             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 386             sps->vui.colour_description_present_flag = 1;
 387             sps->vui.colour_primaries         = avctx->color_primaries;
 388             sps->vui.transfer_characteristics = avctx->color_trc;
 389             sps->vui.matrix_coefficients      = avctx->colorspace;
 390         }
 391     } else {
 392         sps->vui.video_format             = 5;
 393         sps->vui.video_full_range_flag    = 0;
 394         sps->vui.colour_primaries         = avctx->color_primaries;
 395         sps->vui.transfer_characteristics = avctx->color_trc;
 396         sps->vui.matrix_coefficients      = avctx->colorspace;
 397     }
 398
 399     if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
 400         sps->vui.chroma_loc_info_present_flag = 1;
 401         sps->vui.chroma_sample_loc_type_top_field    =
 402         sps->vui.chroma_sample_loc_type_bottom_field =
 403             avctx->chroma_sample_location - 1;
 404     }
 405
 406     sps->vui.timing_info_present_flag = 1;
 407     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
 408         sps->vui.num_units_in_tick = avctx->framerate.den;
 409         sps->vui.time_scale        = 2 * avctx->framerate.num;
 410         sps->vui.fixed_frame_rate_flag = 1;
 411     } else {
 412         sps->vui.num_units_in_tick = avctx->time_base.num;
 413         sps->vui.time_scale        = 2 * avctx->time_base.den;
 414         sps->vui.fixed_frame_rate_flag = 0;
 415     }
 416
 417     if (priv->sei & SEI_TIMING) {
 418         H264RawHRD *hrd = &sps->vui.nal_hrd_parameters;
 419         H264RawSEIBufferingPeriod *bp = &priv->sei_buffering_period;
 420
 421         sps->vui.nal_hrd_parameters_present_flag = 1;
 422
 423         hrd->cpb_cnt_minus1 = 0;
 424
 425         // Try to scale these to a sensible range so that the
 426         // golomb encode of the value is not overlong.
 427         hrd->bit_rate_scale =
 428             av_clip_uintp2(av_log2(avctx->bit_rate) - 15 - 6, 4);
 429         hrd->bit_rate_value_minus1[0] =
 430             (avctx->bit_rate >> hrd->bit_rate_scale + 6) - 1;
 431
 432         hrd->cpb_size_scale =
 433             av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4);
 434         hrd->cpb_size_value_minus1[0] =
 435             (ctx->hrd_params.hrd.buffer_size >> hrd->cpb_size_scale + 4) - 1;
 436
 437         // CBR mode as defined for the HRD cannot be achieved without filler
 438         // data, so this flag cannot be set even with VAAPI CBR modes.
 439         hrd->cbr_flag[0] = 0;
 440
 441         hrd->initial_cpb_removal_delay_length_minus1 = 23;
 442         hrd->cpb_removal_delay_length_minus1         = 23;
 443         hrd->dpb_output_delay_length_minus1          = 7;
 444         hrd->time_offset_length                      = 0;
 445
 446         bp->seq_parameter_set_id = sps->seq_parameter_set_id;
 447
 448         // This calculation can easily overflow 32 bits.
 449         bp->nal.initial_cpb_removal_delay[0] = 90000 *
 450             (uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness /
 451             ctx->hrd_params.hrd.buffer_size;
 452         bp->nal.initial_cpb_removal_delay_offset[0] = 0;
 453     } else {
 454         sps->vui.nal_hrd_parameters_present_flag = 0;
 455         sps->vui.low_delay_hrd_flag = 1 - sps->vui.fixed_frame_rate_flag;
 456     }
 457
 458     sps->vui.bitstream_restriction_flag    = 1;
 459     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;
 460     sps->vui.log2_max_mv_length_horizontal = 16;
 461     sps->vui.log2_max_mv_length_vertical   = 16;
 462     sps->vui.max_num_reorder_frames        = (ctx->b_per_p > 0);
 463     sps->vui.max_dec_frame_buffering       = sps->max_num_ref_frames;
 464
 465     pps->nal_unit_header.nal_ref_idc = 3;
 466     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;
 467
 468     pps->pic_parameter_set_id = 0;
 469     pps->seq_parameter_set_id = 0;
 470
 471     pps->entropy_coding_mode_flag =
 472         !(sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 473           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 474           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);
 475     if (!priv->coder && pps->entropy_coding_mode_flag)
 476         pps->entropy_coding_mode_flag = 0;
 477
 478     pps->num_ref_idx_l0_default_active_minus1 = 0;
 479     pps->num_ref_idx_l1_default_active_minus1 = 0;
 480
 481     pps->pic_init_qp_minus26 = priv->fixed_qp_idr - 26;
 482
 483     if (sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 484         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 485         sps->profile_idc == FF_PROFILE_H264_MAIN) {
 486         pps->more_rbsp_data = 0;
 487     } else {
 488         pps->more_rbsp_data = 1;
 489
 490         pps->transform_8x8_mode_flag = 1;
 491     }
 492
 493     *vseq = (VAEncSequenceParameterBufferH264) {
 494         .seq_parameter_set_id = sps->seq_parameter_set_id,
 495         .level_idc        = sps->level_idc,
 496         .intra_period     = avctx->gop_size,
 497         .intra_idr_period = avctx->gop_size,
 498         .ip_period        = ctx->b_per_p + 1,
 499
 500         .bits_per_second       = avctx->bit_rate,
 501         .max_num_ref_frames    = sps->max_num_ref_frames,
 502         .picture_width_in_mbs  = sps->pic_width_in_mbs_minus1 + 1,
 503         .picture_height_in_mbs = sps->pic_height_in_map_units_minus1 + 1,
 504
 505         .seq_fields.bits = {
 506             .chroma_format_idc                 = sps->chroma_format_idc,
 507             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,
 508             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,
 509             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,
 510             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,
 511             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,
 512             .pic_order_cnt_type                = sps->pic_order_cnt_type,
 513             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,
 514             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,
 515         },
 516
 517         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,
 518         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,
 519
 520         .frame_cropping_flag      = sps->frame_cropping_flag,
 521         .frame_crop_left_offset   = sps->frame_crop_left_offset,
 522         .frame_crop_right_offset  = sps->frame_crop_right_offset,
 523         .frame_crop_top_offset    = sps->frame_crop_top_offset,
 524         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,
 525
 526         .vui_parameters_present_flag = sps->vui_parameters_present_flag,
 527
 528         .vui_fields.bits = {
 529             .aspect_ratio_info_present_flag = sps->vui.aspect_ratio_info_present_flag,
 530             .timing_info_present_flag       = sps->vui.timing_info_present_flag,
 531             .bitstream_restriction_flag     = sps->vui.bitstream_restriction_flag,
 532             .log2_max_mv_length_horizontal  = sps->vui.log2_max_mv_length_horizontal,
 533             .log2_max_mv_length_vertical    = sps->vui.log2_max_mv_length_vertical,
 534         },
 535
 536         .aspect_ratio_idc  = sps->vui.aspect_ratio_idc,
 537         .sar_width         = sps->vui.sar_width,
 538         .sar_height        = sps->vui.sar_height,
 539         .num_units_in_tick = sps->vui.num_units_in_tick,
 540         .time_scale        = sps->vui.time_scale,
 541     };
 542
 543     *vpic = (VAEncPictureParameterBufferH264) {
 544         .CurrPic = {
 545             .picture_id = VA_INVALID_ID,
 546             .flags      = VA_PICTURE_H264_INVALID,
 547         },
 548
 549         .coded_buf = VA_INVALID_ID,
 550
 551         .pic_parameter_set_id = pps->pic_parameter_set_id,
 552         .seq_parameter_set_id = pps->seq_parameter_set_id,
 553
 554         .pic_init_qp                  = pps->pic_init_qp_minus26 + 26,
 555         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,
 556         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,
 557
 558         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,
 559         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,
 560
 561         .pic_fields.bits = {
 562             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,
 563             .weighted_pred_flag              = pps->weighted_pred_flag,
 564             .weighted_bipred_idc             = pps->weighted_bipred_idc,
 565             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,
 566             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,
 567             .deblocking_filter_control_present_flag =
 568                 pps->deblocking_filter_control_present_flag,
 569             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,
 570             .pic_order_present_flag          =
 571                 pps->bottom_field_pic_order_in_frame_present_flag,
 572             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,
 573         },
 574     };
 575
 576     return 0;
 577 }
 578
 579 static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
 580                                                  VAAPIEncodePicture *pic)
 581 {
 582     VAAPIEncodeContext               *ctx = avctx->priv_data;
 583     VAAPIEncodeH264Context          *priv = avctx->priv_data;
 584     H264RawSPS                       *sps = &priv->raw_sps;
 585     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 586     int i;
 587
 588     memset(&priv->current_access_unit, 0,
 589            sizeof(priv->current_access_unit));
 590
 591     if (pic->type == PICTURE_TYPE_IDR) {
 592         av_assert0(pic->display_order == pic->encode_order);
 593         priv->frame_num      = 0;
 594         priv->next_frame_num = 1;
 595         priv->cpb_delay      = 0;
 596         priv->last_idr_frame = pic->display_order;
 597         ++priv->idr_pic_count;
 598
 599         priv->slice_type       = 7;
 600         priv->primary_pic_type = 0;
 601     } else {
 602         priv->frame_num      = priv->next_frame_num;
 603
 604         if (pic->type != PICTURE_TYPE_B) {
 605             // Reference picture, so frame_num advances.
 606             priv->next_frame_num = (priv->frame_num + 1) &
 607                 ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
 608         }
 609         ++priv->cpb_delay;
 610
 611         if (pic->type == PICTURE_TYPE_I) {
 612             priv->slice_type       = 7;
 613             priv->primary_pic_type = 0;
 614         } else if (pic->type == PICTURE_TYPE_P) {
 615             priv->slice_type       = 5;
 616             priv->primary_pic_type = 1;
 617         } else {
 618             priv->slice_type       = 6;
 619             priv->primary_pic_type = 2;
 620         }
 621     }
 622     priv->pic_order_cnt = pic->display_order - priv->last_idr_frame;
 623     priv->dpb_delay     = pic->display_order - pic->encode_order + 1;
 624
 625     if (priv->aud) {
 626         priv->aud_needed = 1;
 627         priv->raw_aud = (H264RawAUD) {
 628             .nal_unit_header = {
 629                 .nal_unit_type = H264_NAL_AUD,
 630             },
 631             .primary_pic_type  = priv->primary_pic_type,
 632         };
 633     } else {
 634         priv->aud_needed = 0;
 635     }
 636
 637     priv->sei_needed = 0;
 638
 639     if (priv->sei & SEI_IDENTIFIER && pic->encode_order == 0)
 640         priv->sei_needed |= SEI_IDENTIFIER;
 641 #if !CONFIG_VAAPI_1
 642     if (ctx->va_rc_mode == VA_RC_CBR)
 643         priv->sei_cbr_workaround_needed = 1;
 644 #endif
 645
 646     if (priv->sei & SEI_TIMING) {
 647         priv->sei_pic_timing = (H264RawSEIPicTiming) {
 648             .cpb_removal_delay = 2 * priv->cpb_delay,
 649             .dpb_output_delay  = 2 * priv->dpb_delay,
 650         };
 651
 652         priv->sei_needed |= SEI_TIMING;
 653     }
 654
 655     if (priv->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) {
 656         priv->sei_recovery_point = (H264RawSEIRecoveryPoint) {
 657             .recovery_frame_cnt = 0,
 658             .exact_match_flag   = 1,
 659             .broken_link_flag   = ctx->b_per_p > 0,
 660         };
 661
 662         priv->sei_needed |= SEI_RECOVERY_POINT;
 663     }
 664
 665     vpic->CurrPic = (VAPictureH264) {
 666         .picture_id          = pic->recon_surface,
 667         .frame_idx           = priv->frame_num,
 668         .flags               = 0,
 669         .TopFieldOrderCnt    = priv->pic_order_cnt,
 670         .BottomFieldOrderCnt = priv->pic_order_cnt,
 671     };
 672
 673     for (i = 0; i < pic->nb_refs; i++) {
 674         VAAPIEncodePicture *ref = pic->refs[i];
 675         unsigned int frame_num = (ref->encode_order - priv->last_idr_frame) &
 676             ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
 677         unsigned int pic_order_cnt = ref->display_order - priv->last_idr_frame;
 678
 679         av_assert0(ref && ref->encode_order < pic->encode_order);
 680         vpic->ReferenceFrames[i] = (VAPictureH264) {
 681             .picture_id          = ref->recon_surface,
 682             .frame_idx           = frame_num,
 683             .flags               = VA_PICTURE_H264_SHORT_TERM_REFERENCE,
 684             .TopFieldOrderCnt    = pic_order_cnt,
 685             .BottomFieldOrderCnt = pic_order_cnt,
 686         };
 687     }
 688     for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
 689         vpic->ReferenceFrames[i] = (VAPictureH264) {
 690             .picture_id = VA_INVALID_ID,
 691             .flags      = VA_PICTURE_H264_INVALID,
 692         };
 693     }
 694
 695     vpic->coded_buf = pic->output_buffer;
 696
 697     vpic->frame_num = priv->frame_num;
 698
 699     vpic->pic_fields.bits.idr_pic_flag       = (pic->type == PICTURE_TYPE_IDR);
 700     vpic->pic_fields.bits.reference_pic_flag = (pic->type != PICTURE_TYPE_B);
 701
 702     pic->nb_slices = 1;
 703
 704     return 0;
 705 }
 706
 707 static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,
 708                                                VAAPIEncodePicture *pic,
 709                                                VAAPIEncodeSlice *slice)
 710 {
 711     VAAPIEncodeH264Context          *priv = avctx->priv_data;
 712     H264RawSPS                       *sps = &priv->raw_sps;
 713     H264RawPPS                       *pps = &priv->raw_pps;
 714     H264RawSliceHeader                *sh = &priv->raw_slice.header;
 715     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 716     VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
 717     int i;
 718
 719     if (pic->type == PICTURE_TYPE_IDR) {
 720         sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;
 721         sh->nal_unit_header.nal_ref_idc   = 3;
 722     } else {
 723         sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;
 724         sh->nal_unit_header.nal_ref_idc   = pic->type != PICTURE_TYPE_B;
 725     }
 726
 727     // Only one slice per frame.
 728     sh->first_mb_in_slice = 0;
 729     sh->slice_type        = priv->slice_type;
 730
 731     sh->pic_parameter_set_id = pps->pic_parameter_set_id;
 732
 733     sh->frame_num  = priv->frame_num;
 734     sh->idr_pic_id = priv->idr_pic_count;
 735
 736     sh->pic_order_cnt_lsb = priv->pic_order_cnt &
 737         ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);
 738
 739     sh->direct_spatial_mv_pred_flag = 1;
 740
 741     if (pic->type == PICTURE_TYPE_B)
 742         sh->slice_qp_delta = priv->fixed_qp_b - (pps->pic_init_qp_minus26 + 26);
 743     else if (pic->type == PICTURE_TYPE_P)
 744         sh->slice_qp_delta = priv->fixed_qp_p - (pps->pic_init_qp_minus26 + 26);
 745     else
 746         sh->slice_qp_delta = priv->fixed_qp_idr - (pps->pic_init_qp_minus26 + 26);
 747
 748
 749     vslice->macroblock_address = sh->first_mb_in_slice;
 750     vslice->num_macroblocks    = priv->mb_width * priv->mb_height;
 751
 752     vslice->macroblock_info = VA_INVALID_ID;
 753
 754     vslice->slice_type           = sh->slice_type % 5;
 755     vslice->pic_parameter_set_id = sh->pic_parameter_set_id;
 756     vslice->idr_pic_id           = sh->idr_pic_id;
 757
 758     vslice->pic_order_cnt_lsb = sh->pic_order_cnt_lsb;
 759
 760     vslice->direct_spatial_mv_pred_flag = sh->direct_spatial_mv_pred_flag;
 761
 762     for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {
 763         vslice->RefPicList0[i].picture_id = VA_INVALID_ID;
 764         vslice->RefPicList0[i].flags      = VA_PICTURE_H264_INVALID;
 765         vslice->RefPicList1[i].picture_id = VA_INVALID_ID;
 766         vslice->RefPicList1[i].flags      = VA_PICTURE_H264_INVALID;
 767     }
 768
 769     av_assert0(pic->nb_refs <= 2);
 770     if (pic->nb_refs >= 1) {
 771         // Backward reference for P- or B-frame.
 772         av_assert0(pic->type == PICTURE_TYPE_P ||
 773                    pic->type == PICTURE_TYPE_B);
 774         vslice->RefPicList0[0] = vpic->ReferenceFrames[0];
 775     }
 776     if (pic->nb_refs >= 2) {
 777         // Forward reference for B-frame.
 778         av_assert0(pic->type == PICTURE_TYPE_B);
 779         vslice->RefPicList1[0] = vpic->ReferenceFrames[1];
 780     }
 781
 782     vslice->slice_qp_delta = sh->slice_qp_delta;
 783
 784     return 0;
 785 }
 786
 787 static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)
 788 {
 789     VAAPIEncodeContext      *ctx = avctx->priv_data;
 790     VAAPIEncodeH264Context *priv = avctx->priv_data;
 791     int err;
 792
 793     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_H264, avctx);
 794     if (err < 0)
 795         return err;
 796
 797     priv->mb_width  = FFALIGN(avctx->width,  16) / 16;
 798     priv->mb_height = FFALIGN(avctx->height, 16) / 16;
 799
 800     if (ctx->va_rc_mode == VA_RC_CQP) {
 801         priv->fixed_qp_p = priv->qp;
 802         if (avctx->i_quant_factor > 0.0)
 803             priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +
 804                                         avctx->i_quant_offset) + 0.5);
 805         else
 806             priv->fixed_qp_idr = priv->fixed_qp_p;
 807         if (avctx->b_quant_factor > 0.0)
 808             priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +
 809                                       avctx->b_quant_offset) + 0.5);
 810         else
 811             priv->fixed_qp_b = priv->fixed_qp_p;
 812
 813         priv->sei &= ~SEI_TIMING;
 814
 815         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
 816                "%d / %d / %d for IDR- / P- / B-frames.\n",
 817                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
 818
 819     } else if (ctx->va_rc_mode == VA_RC_CBR ||
 820                ctx->va_rc_mode == VA_RC_VBR) {
 821         // These still need to be  set for pic_init_qp/slice_qp_delta.
 822         priv->fixed_qp_idr = 26;
 823         priv->fixed_qp_p   = 26;
 824         priv->fixed_qp_b   = 26;
 825
 826         av_log(avctx, AV_LOG_DEBUG, "Using %s-bitrate = %"PRId64" bps.\n",
 827                ctx->va_rc_mode == VA_RC_CBR ? "constant" : "variable",
 828                avctx->bit_rate);
 829
 830     } else {
 831         av_assert0(0 && "Invalid RC mode.");
 832     }
 833
 834     if (priv->sei & SEI_IDENTIFIER) {
 835         const char *lavc  = LIBAVCODEC_IDENT;
 836         const char *vaapi = VA_VERSION_S;
 837         const char *driver;
 838         int len;
 839
 840         memcpy(priv->sei_identifier.uuid_iso_iec_11578,
 841                vaapi_encode_h264_sei_identifier_uuid,
 842                sizeof(priv->sei_identifier.uuid_iso_iec_11578));
 843
 844         driver = vaQueryVendorString(ctx->hwctx->display);
 845         if (!driver)
 846             driver = "unknown driver";
 847
 848         len = snprintf(NULL, 0, "%s / VAAPI %s / %s", lavc, vaapi, driver);
 849         if (len >= 0) {
 850             priv->sei_identifier_string = av_malloc(len + 1);
 851             if (!priv->sei_identifier_string)
 852                 return AVERROR(ENOMEM);
 853
 854             snprintf(priv->sei_identifier_string, len + 1,
 855                      "%s / VAAPI %s / %s", lavc, vaapi, driver);
 856
 857             priv->sei_identifier.data        = priv->sei_identifier_string;
 858             priv->sei_identifier.data_length = len + 1;
 859         }
 860     }
 861
 862     return 0;
 863 }
 864
 865 static const VAAPIEncodeProfile vaapi_encode_h264_profiles[] = {
 866     { FF_PROFILE_H264_HIGH, 8, 3, 1, 1, VAProfileH264High },
 867     { FF_PROFILE_H264_MAIN, 8, 3, 1, 1, VAProfileH264Main },
 868     { FF_PROFILE_H264_CONSTRAINED_BASELINE,
 869                             8, 3, 1, 1, VAProfileH264ConstrainedBaseline },
 870     { FF_PROFILE_UNKNOWN }
 871 };
 872
 873 static const VAAPIEncodeType vaapi_encode_type_h264 = {
 874     .profiles              = vaapi_encode_h264_profiles,
 875
 876     .configure             = &vaapi_encode_h264_configure,
 877
 878     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),
 879     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,
 880
 881     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),
 882     .init_picture_params   = &vaapi_encode_h264_init_picture_params,
 883
 884     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),
 885     .init_slice_params     = &vaapi_encode_h264_init_slice_params,
 886
 887     .sequence_header_type  = VAEncPackedHeaderSequence,
 888     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,
 889
 890     .slice_header_type     = VAEncPackedHeaderH264_Slice,
 891     .write_slice_header    = &vaapi_encode_h264_write_slice_header,
 892
 893     .write_extra_header    = &vaapi_encode_h264_write_extra_header,
 894 };
 895
 896 static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
 897 {
 898     VAAPIEncodeContext      *ctx = avctx->priv_data;
 899     VAAPIEncodeH264Context *priv = avctx->priv_data;
 900
 901     ctx->codec = &vaapi_encode_type_h264;
 902
 903     if (avctx->profile == FF_PROFILE_UNKNOWN)
 904         avctx->profile = priv->profile;
 905     if (avctx->level == FF_LEVEL_UNKNOWN)
 906         avctx->level = priv->level;
 907     if (avctx->compression_level == FF_COMPRESSION_DEFAULT)
 908         avctx->compression_level = priv->quality;
 909
 910     // Reject unsupported profiles.
 911     switch (avctx->profile) {
 912     case FF_PROFILE_H264_BASELINE:
 913         av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile is not "
 914                "supported, using constrained baseline profile instead.\n");
 915         avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;
 916         break;
 917     case FF_PROFILE_H264_EXTENDED:
 918         av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "
 919                "is not supported.\n");
 920         return AVERROR_PATCHWELCOME;
 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     }
 936
 937     if (avctx->bit_rate > 0) {
 938         if (avctx->rc_max_rate == avctx->bit_rate)
 939             ctx->va_rc_mode = VA_RC_CBR;
 940         else
 941             ctx->va_rc_mode = VA_RC_VBR;
 942     } else
 943         ctx->va_rc_mode = VA_RC_CQP;
 944
 945     ctx->va_packed_headers =
 946         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.
 947         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.
 948         VA_ENC_PACKED_HEADER_MISC;      // SEI.
 949
 950     ctx->surface_width  = FFALIGN(avctx->width,  16);
 951     ctx->surface_height = FFALIGN(avctx->height, 16);
 952
 953     return ff_vaapi_encode_init(avctx);
 954 }
 955
 956 static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)
 957 {
 958     VAAPIEncodeH264Context *priv = avctx->priv_data;
 959
 960     ff_cbs_close(&priv->cbc);
 961     av_freep(&priv->sei_identifier_string);
 962
 963     return ff_vaapi_encode_close(avctx);
 964 }
 965
 966 #define OFFSET(x) offsetof(VAAPIEncodeH264Context, x)
 967 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 968 static const AVOption vaapi_encode_h264_options[] = {
 969     VAAPI_ENCODE_COMMON_OPTIONS,
 970
 971     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
 972       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },
 973     { "quality", "Set encode quality (trades off against speed, higher is faster)",
 974       OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
 975     { "coder", "Entropy coder type",
 976       OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },
 977         { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
 978         { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
 979         { "vlc",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
 980         { "ac",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
 981
 982     { "aud", "Include AUD",
 983       OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
 984
 985     { "sei", "Set SEI to include",
 986       OFFSET(sei), AV_OPT_TYPE_FLAGS,
 987       { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },
 988       0, INT_MAX, FLAGS, "sei" },
 989     { "identifier", "Include encoder version identifier",
 990       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },
 991       INT_MIN, INT_MAX, FLAGS, "sei" },
 992     { "timing", "Include timing parameters (buffering_period and pic_timing)",
 993       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },
 994       INT_MIN, INT_MAX, FLAGS, "sei" },
 995     { "recovery_point", "Include recovery points where appropriate",
 996       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },
 997       INT_MIN, INT_MAX, FLAGS, "sei" },
 998
 999     { "profile", "Set profile (profile_idc and constraint_set*_flag)",
1000       OFFSET(profile), AV_OPT_TYPE_INT,
1001       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xffff, FLAGS, "profile" },
1002
1003 #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \
1004       { .i64 = value }, 0, 0, FLAGS, "profile"
1005     { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },
1006     { PROFILE("main",                 FF_PROFILE_H264_MAIN) },
1007     { PROFILE("high",                 FF_PROFILE_H264_HIGH) },
1008 #undef PROFILE
1009
1010     { "level", "Set level (level_idc)",
1011       OFFSET(level), AV_OPT_TYPE_INT,
1012       { .i64 = 51 }, 0x00, 0xff, FLAGS, "level" },
1013
1014 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
1015       { .i64 = value }, 0, 0, FLAGS, "level"
1016     { LEVEL("1",   10) },
1017     { LEVEL("1.1", 11) },
1018     { LEVEL("1.2", 12) },
1019     { LEVEL("1.3", 13) },
1020     { LEVEL("2",   20) },
1021     { LEVEL("2.1", 21) },
1022     { LEVEL("2.2", 22) },
1023     { LEVEL("3",   30) },
1024     { LEVEL("3.1", 31) },
1025     { LEVEL("3.2", 32) },
1026     { LEVEL("4",   40) },
1027     { LEVEL("4.1", 41) },
1028     { LEVEL("4.2", 42) },
1029     { LEVEL("5",   50) },
1030     { LEVEL("5.1", 51) },
1031     { LEVEL("5.2", 52) },
1032     { LEVEL("6",   60) },
1033     { LEVEL("6.1", 61) },
1034     { LEVEL("6.2", 62) },
1035 #undef LEVEL
1036
1037     { NULL },
1038 };
1039
1040 static const AVCodecDefault vaapi_encode_h264_defaults[] = {
1041     { "b",              "0"   },
1042     { "bf",             "2"   },
1043     { "g",              "120" },
1044     { "i_qfactor",      "1"   },
1045     { "i_qoffset",      "0"   },
1046     { "b_qfactor",      "6/5" },
1047     { "b_qoffset",      "0"   },
1048     { "qmin",           "0"   },
1049     { NULL },
1050 };
1051
1052 static const AVClass vaapi_encode_h264_class = {
1053     .class_name = "h264_vaapi",
1054     .item_name  = av_default_item_name,
1055     .option     = vaapi_encode_h264_options,
1056     .version    = LIBAVUTIL_VERSION_INT,
1057 };
1058
1059 AVCodec ff_h264_vaapi_encoder = {
1060     .name           = "h264_vaapi",
1061     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),
1062     .type           = AVMEDIA_TYPE_VIDEO,
1063     .id             = AV_CODEC_ID_H264,
1064     .priv_data_size = sizeof(VAAPIEncodeH264Context),
1065     .init           = &vaapi_encode_h264_init,
1066     .encode2        = &ff_vaapi_encode2,
1067     .close          = &vaapi_encode_h264_close,
1068     .priv_class     = &vaapi_encode_h264_class,
1069     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
1070     .defaults       = vaapi_encode_h264_defaults,
1071     .pix_fmts = (const enum AVPixelFormat[]) {
1072         AV_PIX_FMT_VAAPI,
1073         AV_PIX_FMT_NONE,
1074     },
1075     .wrapper_name   = "vaapi",
1076 };