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 VAAPIEncodeH264Picture {
  51     int frame_num;
  52     int pic_order_cnt;
  53
  54     int64_t last_idr_frame;
  55     uint16_t idr_pic_id;
  56
  57     int primary_pic_type;
  58     int slice_type;
  59
  60     int cpb_delay;
  61     int dpb_delay;
  62 } VAAPIEncodeH264Picture;
  63
  64 typedef struct VAAPIEncodeH264Context {
  65     VAAPIEncodeContext common;
  66
  67     // User options.
  68     int qp;
  69     int quality;
  70     int coder;
  71     int aud;
  72     int sei;
  73     int profile;
  74     int level;
  75
  76     // Derived settings.
  77     int mb_width;
  78     int mb_height;
  79
  80     int fixed_qp_idr;
  81     int fixed_qp_p;
  82     int fixed_qp_b;
  83
  84     int dpb_frames;
  85
  86     // Writer structures.
  87     CodedBitstreamContext *cbc;
  88     CodedBitstreamFragment current_access_unit;
  89
  90     H264RawAUD   raw_aud;
  91     H264RawSPS   raw_sps;
  92     H264RawPPS   raw_pps;
  93     H264RawSEI   raw_sei;
  94     H264RawSlice raw_slice;
  95
  96     H264RawSEIBufferingPeriod      sei_buffering_period;
  97     H264RawSEIPicTiming            sei_pic_timing;
  98     H264RawSEIRecoveryPoint        sei_recovery_point;
  99     H264RawSEIUserDataUnregistered sei_identifier;
 100     char                          *sei_identifier_string;
 101
 102     int aud_needed;
 103     int sei_needed;
 104     int sei_cbr_workaround_needed;
 105 } VAAPIEncodeH264Context;
 106
 107
 108 static int vaapi_encode_h264_write_access_unit(AVCodecContext *avctx,
 109                                                char *data, size_t *data_len,
 110                                                CodedBitstreamFragment *au)
 111 {
 112     VAAPIEncodeH264Context *priv = avctx->priv_data;
 113     int err;
 114
 115     err = ff_cbs_write_fragment_data(priv->cbc, au);
 116     if (err < 0) {
 117         av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
 118         return err;
 119     }
 120
 121     if (*data_len < 8 * au->data_size - au->data_bit_padding) {
 122         av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
 123                "%zu < %zu.\n", *data_len,
 124                8 * au->data_size - au->data_bit_padding);
 125         return AVERROR(ENOSPC);
 126     }
 127
 128     memcpy(data, au->data, au->data_size);
 129     *data_len = 8 * au->data_size - au->data_bit_padding;
 130
 131     return 0;
 132 }
 133
 134 static int vaapi_encode_h264_add_nal(AVCodecContext *avctx,
 135                                      CodedBitstreamFragment *au,
 136                                      void *nal_unit)
 137 {
 138     VAAPIEncodeH264Context *priv = avctx->priv_data;
 139     H264RawNALUnitHeader *header = nal_unit;
 140     int err;
 141
 142     err = ff_cbs_insert_unit_content(priv->cbc, au, -1,
 143                                      header->nal_unit_type, nal_unit, NULL);
 144     if (err < 0) {
 145         av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: "
 146                "type = %d.\n", header->nal_unit_type);
 147         return err;
 148     }
 149
 150     return 0;
 151 }
 152
 153 static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,
 154                                                    char *data, size_t *data_len)
 155 {
 156     VAAPIEncodeH264Context *priv = avctx->priv_data;
 157     CodedBitstreamFragment   *au = &priv->current_access_unit;
 158     int err;
 159
 160     if (priv->aud_needed) {
 161         err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);
 162         if (err < 0)
 163             goto fail;
 164         priv->aud_needed = 0;
 165     }
 166
 167     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_sps);
 168     if (err < 0)
 169         goto fail;
 170
 171     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_pps);
 172     if (err < 0)
 173         goto fail;
 174
 175     err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 176 fail:
 177     ff_cbs_fragment_uninit(priv->cbc, au);
 178     return err;
 179 }
 180
 181 static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,
 182                                                 VAAPIEncodePicture *pic,
 183                                                 VAAPIEncodeSlice *slice,
 184                                                 char *data, size_t *data_len)
 185 {
 186     VAAPIEncodeH264Context *priv = avctx->priv_data;
 187     CodedBitstreamFragment   *au = &priv->current_access_unit;
 188     int err;
 189
 190     if (priv->aud_needed) {
 191         err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);
 192         if (err < 0)
 193             goto fail;
 194         priv->aud_needed = 0;
 195     }
 196
 197     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_slice);
 198     if (err < 0)
 199         goto fail;
 200
 201     err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 202 fail:
 203     ff_cbs_fragment_uninit(priv->cbc, au);
 204     return err;
 205 }
 206
 207 static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,
 208                                                 VAAPIEncodePicture *pic,
 209                                                 int index, int *type,
 210                                                 char *data, size_t *data_len)
 211 {
 212     VAAPIEncodeH264Context *priv = avctx->priv_data;
 213     CodedBitstreamFragment   *au = &priv->current_access_unit;
 214     int err, i;
 215
 216     if (priv->sei_needed) {
 217         H264RawSEI *sei = &priv->raw_sei;
 218
 219         if (priv->aud_needed) {
 220             err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);
 221             if (err < 0)
 222                 goto fail;
 223             priv->aud_needed = 0;
 224         }
 225
 226         *sei = (H264RawSEI) {
 227             .nal_unit_header = {
 228                 .nal_unit_type = H264_NAL_SEI,
 229             },
 230         };
 231
 232         i = 0;
 233
 234         if (priv->sei_needed & SEI_IDENTIFIER) {
 235             sei->payload[i].payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED;
 236             sei->payload[i].payload.user_data_unregistered = priv->sei_identifier;
 237             ++i;
 238         }
 239         if (priv->sei_needed & SEI_TIMING) {
 240             if (pic->type == PICTURE_TYPE_IDR) {
 241                 sei->payload[i].payload_type = H264_SEI_TYPE_BUFFERING_PERIOD;
 242                 sei->payload[i].payload.buffering_period = priv->sei_buffering_period;
 243                 ++i;
 244             }
 245             sei->payload[i].payload_type = H264_SEI_TYPE_PIC_TIMING;
 246             sei->payload[i].payload.pic_timing = priv->sei_pic_timing;
 247             ++i;
 248         }
 249         if (priv->sei_needed & SEI_RECOVERY_POINT) {
 250             sei->payload[i].payload_type = H264_SEI_TYPE_RECOVERY_POINT;
 251             sei->payload[i].payload.recovery_point = priv->sei_recovery_point;
 252             ++i;
 253         }
 254
 255         sei->payload_count = i;
 256         av_assert0(sei->payload_count > 0);
 257
 258         err = vaapi_encode_h264_add_nal(avctx, au, sei);
 259         if (err < 0)
 260             goto fail;
 261         priv->sei_needed = 0;
 262
 263         err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 264         if (err < 0)
 265             goto fail;
 266
 267         ff_cbs_fragment_uninit(priv->cbc, au);
 268
 269         *type = VAEncPackedHeaderRawData;
 270         return 0;
 271
 272 #if !CONFIG_VAAPI_1
 273     } else if (priv->sei_cbr_workaround_needed) {
 274         // Insert a zero-length header using the old SEI type.  This is
 275         // required to avoid triggering broken behaviour on Intel platforms
 276         // in CBR mode where an invalid SEI message is generated by the
 277         // driver and inserted into the stream.
 278         *data_len = 0;
 279         *type = VAEncPackedHeaderH264_SEI;
 280         priv->sei_cbr_workaround_needed = 0;
 281         return 0;
 282 #endif
 283
 284     } else {
 285         return AVERROR_EOF;
 286     }
 287
 288 fail:
 289     ff_cbs_fragment_uninit(priv->cbc, au);
 290     return err;
 291 }
 292
 293 static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
 294 {
 295     VAAPIEncodeContext                *ctx = avctx->priv_data;
 296     VAAPIEncodeH264Context           *priv = avctx->priv_data;
 297     H264RawSPS                        *sps = &priv->raw_sps;
 298     H264RawPPS                        *pps = &priv->raw_pps;
 299     VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
 300     VAEncPictureParameterBufferH264  *vpic = ctx->codec_picture_params;
 301
 302     memset(&priv->current_access_unit, 0,
 303            sizeof(priv->current_access_unit));
 304
 305     memset(sps, 0, sizeof(*sps));
 306     memset(pps, 0, sizeof(*pps));
 307
 308     sps->nal_unit_header.nal_ref_idc   = 3;
 309     sps->nal_unit_header.nal_unit_type = H264_NAL_SPS;
 310
 311     sps->profile_idc = avctx->profile & 0xff;
 312
 313     if (avctx->profile == FF_PROFILE_H264_CONSTRAINED_BASELINE ||
 314         avctx->profile == FF_PROFILE_H264_MAIN)
 315         sps->constraint_set1_flag = 1;
 316
 317     if (avctx->profile == FF_PROFILE_H264_HIGH)
 318         sps->constraint_set3_flag = ctx->gop_size == 1;
 319
 320     if (avctx->profile == FF_PROFILE_H264_MAIN ||
 321         avctx->profile == FF_PROFILE_H264_HIGH) {
 322         sps->constraint_set4_flag = 1;
 323         sps->constraint_set5_flag = ctx->b_per_p == 0;
 324     }
 325
 326     if (ctx->gop_size == 1)
 327         priv->dpb_frames = 0;
 328     else
 329         priv->dpb_frames = 1 + ctx->max_b_depth;
 330
 331     if (avctx->level != FF_LEVEL_UNKNOWN) {
 332         sps->level_idc = avctx->level;
 333     } else {
 334         const H264LevelDescriptor *level;
 335
 336         level = ff_h264_guess_level(sps->profile_idc,
 337                                     avctx->bit_rate,
 338                                     priv->mb_width  * 16,
 339                                     priv->mb_height * 16,
 340                                     priv->dpb_frames);
 341         if (level) {
 342             av_log(avctx, AV_LOG_VERBOSE, "Using level %s.\n", level->name);
 343             if (level->constraint_set3_flag)
 344                 sps->constraint_set3_flag = 1;
 345             sps->level_idc = level->level_idc;
 346         } else {
 347             av_log(avctx, AV_LOG_WARNING, "Stream will not conform "
 348                    "to any level: using level 6.2.\n");
 349             sps->level_idc = 62;
 350         }
 351     }
 352
 353     sps->seq_parameter_set_id = 0;
 354     sps->chroma_format_idc    = 1;
 355
 356     sps->log2_max_frame_num_minus4 = 4;
 357     sps->pic_order_cnt_type        = 0;
 358     sps->log2_max_pic_order_cnt_lsb_minus4 = 4;
 359
 360     sps->max_num_ref_frames = priv->dpb_frames;
 361
 362     sps->pic_width_in_mbs_minus1        = priv->mb_width  - 1;
 363     sps->pic_height_in_map_units_minus1 = priv->mb_height - 1;
 364
 365     sps->frame_mbs_only_flag = 1;
 366     sps->direct_8x8_inference_flag = 1;
 367
 368     if (avctx->width  != 16 * priv->mb_width ||
 369         avctx->height != 16 * priv->mb_height) {
 370         sps->frame_cropping_flag = 1;
 371
 372         sps->frame_crop_left_offset   = 0;
 373         sps->frame_crop_right_offset  =
 374             (16 * priv->mb_width - avctx->width) / 2;
 375         sps->frame_crop_top_offset    = 0;
 376         sps->frame_crop_bottom_offset =
 377             (16 * priv->mb_height - avctx->height) / 2;
 378     } else {
 379         sps->frame_cropping_flag = 0;
 380     }
 381
 382     sps->vui_parameters_present_flag = 1;
 383
 384     if (avctx->sample_aspect_ratio.num != 0 &&
 385         avctx->sample_aspect_ratio.den != 0) {
 386         static const AVRational sar_idc[] = {
 387             {   0,  0 },
 388             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },
 389             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },
 390             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },
 391             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },
 392         };
 393         int num, den, i;
 394         av_reduce(&num, &den, avctx->sample_aspect_ratio.num,
 395                   avctx->sample_aspect_ratio.den, 65535);
 396         for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) {
 397             if (num == sar_idc[i].num &&
 398                 den == sar_idc[i].den) {
 399                 sps->vui.aspect_ratio_idc = i;
 400                 break;
 401             }
 402         }
 403         if (i >= FF_ARRAY_ELEMS(sar_idc)) {
 404             sps->vui.aspect_ratio_idc = 255;
 405             sps->vui.sar_width  = num;
 406             sps->vui.sar_height = den;
 407         }
 408         sps->vui.aspect_ratio_info_present_flag = 1;
 409     }
 410
 411     if (avctx->color_range     != AVCOL_RANGE_UNSPECIFIED ||
 412         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 413         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 414         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 415         sps->vui.video_signal_type_present_flag = 1;
 416         sps->vui.video_format      = 5; // Unspecified.
 417         sps->vui.video_full_range_flag =
 418             avctx->color_range == AVCOL_RANGE_JPEG;
 419
 420         if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 421             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 422             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 423             sps->vui.colour_description_present_flag = 1;
 424             sps->vui.colour_primaries         = avctx->color_primaries;
 425             sps->vui.transfer_characteristics = avctx->color_trc;
 426             sps->vui.matrix_coefficients      = avctx->colorspace;
 427         }
 428     } else {
 429         sps->vui.video_format             = 5;
 430         sps->vui.video_full_range_flag    = 0;
 431         sps->vui.colour_primaries         = avctx->color_primaries;
 432         sps->vui.transfer_characteristics = avctx->color_trc;
 433         sps->vui.matrix_coefficients      = avctx->colorspace;
 434     }
 435
 436     if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
 437         sps->vui.chroma_loc_info_present_flag = 1;
 438         sps->vui.chroma_sample_loc_type_top_field    =
 439         sps->vui.chroma_sample_loc_type_bottom_field =
 440             avctx->chroma_sample_location - 1;
 441     }
 442
 443     sps->vui.timing_info_present_flag = 1;
 444     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
 445         sps->vui.num_units_in_tick = avctx->framerate.den;
 446         sps->vui.time_scale        = 2 * avctx->framerate.num;
 447         sps->vui.fixed_frame_rate_flag = 1;
 448     } else {
 449         sps->vui.num_units_in_tick = avctx->time_base.num;
 450         sps->vui.time_scale        = 2 * avctx->time_base.den;
 451         sps->vui.fixed_frame_rate_flag = 0;
 452     }
 453
 454     if (priv->sei & SEI_TIMING) {
 455         H264RawHRD *hrd = &sps->vui.nal_hrd_parameters;
 456         H264RawSEIBufferingPeriod *bp = &priv->sei_buffering_period;
 457
 458         sps->vui.nal_hrd_parameters_present_flag = 1;
 459
 460         hrd->cpb_cnt_minus1 = 0;
 461
 462         // Try to scale these to a sensible range so that the
 463         // golomb encode of the value is not overlong.
 464         hrd->bit_rate_scale =
 465             av_clip_uintp2(av_log2(ctx->va_bit_rate) - 15 - 6, 4);
 466         hrd->bit_rate_value_minus1[0] =
 467             (ctx->va_bit_rate >> hrd->bit_rate_scale + 6) - 1;
 468
 469         hrd->cpb_size_scale =
 470             av_clip_uintp2(av_log2(ctx->hrd_params.hrd.buffer_size) - 15 - 4, 4);
 471         hrd->cpb_size_value_minus1[0] =
 472             (ctx->hrd_params.hrd.buffer_size >> hrd->cpb_size_scale + 4) - 1;
 473
 474         // CBR mode as defined for the HRD cannot be achieved without filler
 475         // data, so this flag cannot be set even with VAAPI CBR modes.
 476         hrd->cbr_flag[0] = 0;
 477
 478         hrd->initial_cpb_removal_delay_length_minus1 = 23;
 479         hrd->cpb_removal_delay_length_minus1         = 23;
 480         hrd->dpb_output_delay_length_minus1          = 7;
 481         hrd->time_offset_length                      = 0;
 482
 483         bp->seq_parameter_set_id = sps->seq_parameter_set_id;
 484
 485         // This calculation can easily overflow 32 bits.
 486         bp->nal.initial_cpb_removal_delay[0] = 90000 *
 487             (uint64_t)ctx->hrd_params.hrd.initial_buffer_fullness /
 488             ctx->hrd_params.hrd.buffer_size;
 489         bp->nal.initial_cpb_removal_delay_offset[0] = 0;
 490     } else {
 491         sps->vui.nal_hrd_parameters_present_flag = 0;
 492         sps->vui.low_delay_hrd_flag = 1 - sps->vui.fixed_frame_rate_flag;
 493     }
 494
 495     sps->vui.bitstream_restriction_flag    = 1;
 496     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;
 497     sps->vui.log2_max_mv_length_horizontal = 15;
 498     sps->vui.log2_max_mv_length_vertical   = 15;
 499     sps->vui.max_num_reorder_frames        = ctx->max_b_depth;
 500     sps->vui.max_dec_frame_buffering       = ctx->max_b_depth + 1;
 501
 502     pps->nal_unit_header.nal_ref_idc = 3;
 503     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;
 504
 505     pps->pic_parameter_set_id = 0;
 506     pps->seq_parameter_set_id = 0;
 507
 508     pps->entropy_coding_mode_flag =
 509         !(sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 510           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 511           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);
 512     if (!priv->coder && pps->entropy_coding_mode_flag)
 513         pps->entropy_coding_mode_flag = 0;
 514
 515     pps->num_ref_idx_l0_default_active_minus1 = 0;
 516     pps->num_ref_idx_l1_default_active_minus1 = 0;
 517
 518     pps->pic_init_qp_minus26 = priv->fixed_qp_idr - 26;
 519
 520     if (sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 521         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 522         sps->profile_idc == FF_PROFILE_H264_MAIN) {
 523         pps->more_rbsp_data = 0;
 524     } else {
 525         pps->more_rbsp_data = 1;
 526
 527         pps->transform_8x8_mode_flag = 1;
 528     }
 529
 530     *vseq = (VAEncSequenceParameterBufferH264) {
 531         .seq_parameter_set_id = sps->seq_parameter_set_id,
 532         .level_idc        = sps->level_idc,
 533         .intra_period     = ctx->gop_size,
 534         .intra_idr_period = ctx->gop_size,
 535         .ip_period        = ctx->b_per_p + 1,
 536
 537         .bits_per_second       = ctx->va_bit_rate,
 538         .max_num_ref_frames    = sps->max_num_ref_frames,
 539         .picture_width_in_mbs  = sps->pic_width_in_mbs_minus1 + 1,
 540         .picture_height_in_mbs = sps->pic_height_in_map_units_minus1 + 1,
 541
 542         .seq_fields.bits = {
 543             .chroma_format_idc                 = sps->chroma_format_idc,
 544             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,
 545             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,
 546             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,
 547             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,
 548             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,
 549             .pic_order_cnt_type                = sps->pic_order_cnt_type,
 550             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,
 551             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,
 552         },
 553
 554         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,
 555         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,
 556
 557         .frame_cropping_flag      = sps->frame_cropping_flag,
 558         .frame_crop_left_offset   = sps->frame_crop_left_offset,
 559         .frame_crop_right_offset  = sps->frame_crop_right_offset,
 560         .frame_crop_top_offset    = sps->frame_crop_top_offset,
 561         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,
 562
 563         .vui_parameters_present_flag = sps->vui_parameters_present_flag,
 564
 565         .vui_fields.bits = {
 566             .aspect_ratio_info_present_flag = sps->vui.aspect_ratio_info_present_flag,
 567             .timing_info_present_flag       = sps->vui.timing_info_present_flag,
 568             .bitstream_restriction_flag     = sps->vui.bitstream_restriction_flag,
 569             .log2_max_mv_length_horizontal  = sps->vui.log2_max_mv_length_horizontal,
 570             .log2_max_mv_length_vertical    = sps->vui.log2_max_mv_length_vertical,
 571         },
 572
 573         .aspect_ratio_idc  = sps->vui.aspect_ratio_idc,
 574         .sar_width         = sps->vui.sar_width,
 575         .sar_height        = sps->vui.sar_height,
 576         .num_units_in_tick = sps->vui.num_units_in_tick,
 577         .time_scale        = sps->vui.time_scale,
 578     };
 579
 580     *vpic = (VAEncPictureParameterBufferH264) {
 581         .CurrPic = {
 582             .picture_id = VA_INVALID_ID,
 583             .flags      = VA_PICTURE_H264_INVALID,
 584         },
 585
 586         .coded_buf = VA_INVALID_ID,
 587
 588         .pic_parameter_set_id = pps->pic_parameter_set_id,
 589         .seq_parameter_set_id = pps->seq_parameter_set_id,
 590
 591         .pic_init_qp                  = pps->pic_init_qp_minus26 + 26,
 592         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,
 593         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,
 594
 595         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,
 596         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,
 597
 598         .pic_fields.bits = {
 599             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,
 600             .weighted_pred_flag              = pps->weighted_pred_flag,
 601             .weighted_bipred_idc             = pps->weighted_bipred_idc,
 602             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,
 603             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,
 604             .deblocking_filter_control_present_flag =
 605                 pps->deblocking_filter_control_present_flag,
 606             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,
 607             .pic_order_present_flag          =
 608                 pps->bottom_field_pic_order_in_frame_present_flag,
 609             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,
 610         },
 611     };
 612
 613     return 0;
 614 }
 615
 616 static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
 617                                                  VAAPIEncodePicture *pic)
 618 {
 619     VAAPIEncodeContext               *ctx = avctx->priv_data;
 620     VAAPIEncodeH264Context          *priv = avctx->priv_data;
 621     VAAPIEncodeH264Picture          *hpic = pic->priv_data;
 622     VAAPIEncodePicture              *prev = pic->prev;
 623     VAAPIEncodeH264Picture         *hprev = prev ? prev->priv_data : NULL;
 624     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 625     int i;
 626
 627     memset(&priv->current_access_unit, 0,
 628            sizeof(priv->current_access_unit));
 629
 630     if (pic->type == PICTURE_TYPE_IDR) {
 631         av_assert0(pic->display_order == pic->encode_order);
 632
 633         hpic->frame_num      = 0;
 634         hpic->last_idr_frame = pic->display_order;
 635         hpic->idr_pic_id     = hprev ? hprev->idr_pic_id + 1 : 0;
 636
 637         hpic->primary_pic_type = 0;
 638         hpic->slice_type       = 7;
 639     } else {
 640         av_assert0(prev);
 641
 642         hpic->frame_num = hprev->frame_num + prev->is_reference;
 643
 644         hpic->last_idr_frame = hprev->last_idr_frame;
 645         hpic->idr_pic_id     = hprev->idr_pic_id;
 646
 647         if (pic->type == PICTURE_TYPE_I) {
 648             hpic->slice_type       = 7;
 649             hpic->primary_pic_type = 0;
 650         } else if (pic->type == PICTURE_TYPE_P) {
 651             hpic->slice_type       = 5;
 652             hpic->primary_pic_type = 1;
 653         } else {
 654             hpic->slice_type       = 6;
 655             hpic->primary_pic_type = 2;
 656         }
 657     }
 658     hpic->pic_order_cnt = pic->display_order - hpic->last_idr_frame;
 659     hpic->dpb_delay     = pic->display_order - pic->encode_order + ctx->max_b_depth;
 660     hpic->cpb_delay     = pic->encode_order - hpic->last_idr_frame;
 661
 662     if (priv->aud) {
 663         priv->aud_needed = 1;
 664         priv->raw_aud = (H264RawAUD) {
 665             .nal_unit_header = {
 666                 .nal_unit_type = H264_NAL_AUD,
 667             },
 668             .primary_pic_type  = hpic->primary_pic_type,
 669         };
 670     } else {
 671         priv->aud_needed = 0;
 672     }
 673
 674     priv->sei_needed = 0;
 675
 676     if (priv->sei & SEI_IDENTIFIER && pic->encode_order == 0)
 677         priv->sei_needed |= SEI_IDENTIFIER;
 678 #if !CONFIG_VAAPI_1
 679     if (ctx->va_rc_mode == VA_RC_CBR)
 680         priv->sei_cbr_workaround_needed = 1;
 681 #endif
 682
 683     if (priv->sei & SEI_TIMING) {
 684         priv->sei_pic_timing = (H264RawSEIPicTiming) {
 685             .cpb_removal_delay = 2 * hpic->cpb_delay,
 686             .dpb_output_delay  = 2 * hpic->dpb_delay,
 687         };
 688
 689         priv->sei_needed |= SEI_TIMING;
 690     }
 691
 692     if (priv->sei & SEI_RECOVERY_POINT && pic->type == PICTURE_TYPE_I) {
 693         priv->sei_recovery_point = (H264RawSEIRecoveryPoint) {
 694             .recovery_frame_cnt = 0,
 695             .exact_match_flag   = 1,
 696             .broken_link_flag   = ctx->b_per_p > 0,
 697         };
 698
 699         priv->sei_needed |= SEI_RECOVERY_POINT;
 700     }
 701
 702     vpic->CurrPic = (VAPictureH264) {
 703         .picture_id          = pic->recon_surface,
 704         .frame_idx           = hpic->frame_num,
 705         .flags               = 0,
 706         .TopFieldOrderCnt    = hpic->pic_order_cnt,
 707         .BottomFieldOrderCnt = hpic->pic_order_cnt,
 708     };
 709
 710     for (i = 0; i < pic->nb_refs; i++) {
 711         VAAPIEncodePicture      *ref = pic->refs[i];
 712         VAAPIEncodeH264Picture *href;
 713
 714         av_assert0(ref && ref->encode_order < pic->encode_order);
 715         href = ref->priv_data;
 716
 717         vpic->ReferenceFrames[i] = (VAPictureH264) {
 718             .picture_id          = ref->recon_surface,
 719             .frame_idx           = href->frame_num,
 720             .flags               = VA_PICTURE_H264_SHORT_TERM_REFERENCE,
 721             .TopFieldOrderCnt    = href->pic_order_cnt,
 722             .BottomFieldOrderCnt = href->pic_order_cnt,
 723         };
 724     }
 725     for (; i < FF_ARRAY_ELEMS(vpic->ReferenceFrames); i++) {
 726         vpic->ReferenceFrames[i] = (VAPictureH264) {
 727             .picture_id = VA_INVALID_ID,
 728             .flags      = VA_PICTURE_H264_INVALID,
 729         };
 730     }
 731
 732     vpic->coded_buf = pic->output_buffer;
 733
 734     vpic->frame_num = hpic->frame_num;
 735
 736     vpic->pic_fields.bits.idr_pic_flag       = (pic->type == PICTURE_TYPE_IDR);
 737     vpic->pic_fields.bits.reference_pic_flag = (pic->type != PICTURE_TYPE_B);
 738
 739     return 0;
 740 }
 741
 742 static void vaapi_encode_h264_default_ref_pic_list(AVCodecContext *avctx,
 743                                                    VAAPIEncodePicture *pic,
 744                                                    VAAPIEncodePicture **rpl0,
 745                                                    VAAPIEncodePicture **rpl1,
 746                                                    int *rpl_size)
 747 {
 748     VAAPIEncodePicture *prev;
 749     VAAPIEncodeH264Picture *hp, *hn, *hc;
 750     int i, j, n = 0;
 751
 752     prev = pic->prev;
 753     av_assert0(prev);
 754     hp = pic->priv_data;
 755
 756     for (i = 0; i < pic->prev->nb_dpb_pics; i++) {
 757         hn = prev->dpb[i]->priv_data;
 758         av_assert0(hn->frame_num < hp->frame_num);
 759
 760         if (pic->type == PICTURE_TYPE_P) {
 761             for (j = n; j > 0; j--) {
 762                 hc = rpl0[j - 1]->priv_data;
 763                 av_assert0(hc->frame_num != hn->frame_num);
 764                 if (hc->frame_num > hn->frame_num)
 765                     break;
 766                 rpl0[j] = rpl0[j - 1];
 767             }
 768             rpl0[j] = prev->dpb[i];
 769
 770         } else if (pic->type == PICTURE_TYPE_B) {
 771             for (j = n; j > 0; j--) {
 772                 hc = rpl0[j - 1]->priv_data;
 773                 av_assert0(hc->pic_order_cnt != hp->pic_order_cnt);
 774                 if (hc->pic_order_cnt < hp->pic_order_cnt) {
 775                     if (hn->pic_order_cnt > hp->pic_order_cnt ||
 776                         hn->pic_order_cnt < hc->pic_order_cnt)
 777                         break;
 778                 } else {
 779                     if (hn->pic_order_cnt > hc->pic_order_cnt)
 780                         break;
 781                 }
 782                 rpl0[j] = rpl0[j - 1];
 783             }
 784             rpl0[j] = prev->dpb[i];
 785
 786             for (j = n; j > 0; j--) {
 787                 hc = rpl1[j - 1]->priv_data;
 788                 av_assert0(hc->pic_order_cnt != hp->pic_order_cnt);
 789                 if (hc->pic_order_cnt > hp->pic_order_cnt) {
 790                     if (hn->pic_order_cnt < hp->pic_order_cnt ||
 791                         hn->pic_order_cnt > hc->pic_order_cnt)
 792                         break;
 793                 } else {
 794                     if (hn->pic_order_cnt < hc->pic_order_cnt)
 795                         break;
 796                 }
 797                 rpl1[j] = rpl1[j - 1];
 798             }
 799             rpl1[j] = prev->dpb[i];
 800         }
 801
 802         ++n;
 803     }
 804
 805     if (pic->type == PICTURE_TYPE_B) {
 806         for (i = 0; i < n; i++) {
 807             if (rpl0[i] != rpl1[i])
 808                 break;
 809         }
 810         if (i == n)
 811             FFSWAP(VAAPIEncodePicture*, rpl1[0], rpl1[1]);
 812     }
 813
 814     if (pic->type == PICTURE_TYPE_P ||
 815         pic->type == PICTURE_TYPE_B) {
 816         av_log(avctx, AV_LOG_DEBUG, "Default RefPicList0 for fn=%d/poc=%d:",
 817                hp->frame_num, hp->pic_order_cnt);
 818         for (i = 0; i < n; i++) {
 819             hn = rpl0[i]->priv_data;
 820             av_log(avctx, AV_LOG_DEBUG, "  fn=%d/poc=%d",
 821                    hn->frame_num, hn->pic_order_cnt);
 822         }
 823         av_log(avctx, AV_LOG_DEBUG, "\n");
 824     }
 825     if (pic->type == PICTURE_TYPE_B) {
 826         av_log(avctx, AV_LOG_DEBUG, "Default RefPicList1 for fn=%d/poc=%d:",
 827                hp->frame_num, hp->pic_order_cnt);
 828         for (i = 0; i < n; i++) {
 829             hn = rpl1[i]->priv_data;
 830             av_log(avctx, AV_LOG_DEBUG, "  fn=%d/poc=%d",
 831                    hn->frame_num, hn->pic_order_cnt);
 832         }
 833         av_log(avctx, AV_LOG_DEBUG, "\n");
 834     }
 835
 836     *rpl_size = n;
 837 }
 838
 839 static int vaapi_encode_h264_init_slice_params(AVCodecContext *avctx,
 840                                                VAAPIEncodePicture *pic,
 841                                                VAAPIEncodeSlice *slice)
 842 {
 843     VAAPIEncodeH264Context          *priv = avctx->priv_data;
 844     VAAPIEncodeH264Picture          *hpic = pic->priv_data;
 845     VAAPIEncodePicture              *prev = pic->prev;
 846     H264RawSPS                       *sps = &priv->raw_sps;
 847     H264RawPPS                       *pps = &priv->raw_pps;
 848     H264RawSliceHeader                *sh = &priv->raw_slice.header;
 849     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 850     VAEncSliceParameterBufferH264 *vslice = slice->codec_slice_params;
 851     int i, j;
 852
 853     if (pic->type == PICTURE_TYPE_IDR) {
 854         sh->nal_unit_header.nal_unit_type = H264_NAL_IDR_SLICE;
 855         sh->nal_unit_header.nal_ref_idc   = 3;
 856     } else {
 857         sh->nal_unit_header.nal_unit_type = H264_NAL_SLICE;
 858         sh->nal_unit_header.nal_ref_idc   = pic->is_reference;
 859     }
 860
 861     sh->first_mb_in_slice = slice->block_start;
 862     sh->slice_type        = hpic->slice_type;
 863
 864     sh->pic_parameter_set_id = pps->pic_parameter_set_id;
 865
 866     sh->frame_num = hpic->frame_num &
 867         ((1 << (4 + sps->log2_max_frame_num_minus4)) - 1);
 868     sh->idr_pic_id = hpic->idr_pic_id;
 869     sh->pic_order_cnt_lsb = hpic->pic_order_cnt &
 870         ((1 << (4 + sps->log2_max_pic_order_cnt_lsb_minus4)) - 1);
 871
 872     sh->direct_spatial_mv_pred_flag = 1;
 873
 874     if (pic->type == PICTURE_TYPE_B)
 875         sh->slice_qp_delta = priv->fixed_qp_b - (pps->pic_init_qp_minus26 + 26);
 876     else if (pic->type == PICTURE_TYPE_P)
 877         sh->slice_qp_delta = priv->fixed_qp_p - (pps->pic_init_qp_minus26 + 26);
 878     else
 879         sh->slice_qp_delta = priv->fixed_qp_idr - (pps->pic_init_qp_minus26 + 26);
 880
 881     if (pic->is_reference && pic->type != PICTURE_TYPE_IDR) {
 882         VAAPIEncodePicture *discard_list[MAX_DPB_SIZE];
 883         int discard = 0, keep = 0;
 884
 885         // Discard everything which is in the DPB of the previous frame but
 886         // not in the DPB of this one.
 887         for (i = 0; i < prev->nb_dpb_pics; i++) {
 888             for (j = 0; j < pic->nb_dpb_pics; j++) {
 889                 if (prev->dpb[i] == pic->dpb[j])
 890                     break;
 891             }
 892             if (j == pic->nb_dpb_pics) {
 893                 discard_list[discard] = prev->dpb[i];
 894                 ++discard;
 895             } else {
 896                 ++keep;
 897             }
 898         }
 899         av_assert0(keep <= priv->dpb_frames);
 900
 901         if (discard == 0) {
 902             sh->adaptive_ref_pic_marking_mode_flag = 0;
 903         } else {
 904             sh->adaptive_ref_pic_marking_mode_flag = 1;
 905             for (i = 0; i < discard; i++) {
 906                 VAAPIEncodeH264Picture *old = discard_list[i]->priv_data;
 907                 av_assert0(old->frame_num < hpic->frame_num);
 908                 sh->mmco[i].memory_management_control_operation = 1;
 909                 sh->mmco[i].difference_of_pic_nums_minus1 =
 910                     hpic->frame_num - old->frame_num - 1;
 911             }
 912             sh->mmco[i].memory_management_control_operation = 0;
 913         }
 914     }
 915
 916     // If the intended references are not the first entries of RefPicListN
 917     // by default, use ref-pic-list-modification to move them there.
 918     if (pic->type == PICTURE_TYPE_P || pic->type == PICTURE_TYPE_B) {
 919         VAAPIEncodePicture *def_l0[MAX_DPB_SIZE], *def_l1[MAX_DPB_SIZE];
 920         VAAPIEncodeH264Picture *href;
 921         int n;
 922
 923         vaapi_encode_h264_default_ref_pic_list(avctx, pic,
 924                                                def_l0, def_l1, &n);
 925
 926         if (pic->type == PICTURE_TYPE_P) {
 927             int need_rplm = 0;
 928             for (i = 0; i < pic->nb_refs; i++) {
 929                 av_assert0(pic->refs[i]);
 930                 if (pic->refs[i] != def_l0[i])
 931                     need_rplm = 1;
 932             }
 933
 934             sh->ref_pic_list_modification_flag_l0 = need_rplm;
 935             if (need_rplm) {
 936                 int pic_num = hpic->frame_num;
 937                 for (i = 0; i < pic->nb_refs; i++) {
 938                     href = pic->refs[i]->priv_data;
 939                     av_assert0(href->frame_num != pic_num);
 940                     if (href->frame_num < pic_num) {
 941                         sh->rplm_l0[i].modification_of_pic_nums_idc = 0;
 942                         sh->rplm_l0[i].abs_diff_pic_num_minus1 =
 943                             pic_num - href->frame_num - 1;
 944                     } else {
 945                         sh->rplm_l0[i].modification_of_pic_nums_idc = 1;
 946                         sh->rplm_l0[i].abs_diff_pic_num_minus1 =
 947                             href->frame_num - pic_num - 1;
 948                     }
 949                     pic_num = href->frame_num;
 950                 }
 951                 sh->rplm_l0[i].modification_of_pic_nums_idc = 3;
 952             }
 953
 954         } else {
 955             int need_rplm_l0 = 0, need_rplm_l1 = 0;
 956             int n0 = 0, n1 = 0;
 957             for (i = 0; i < pic->nb_refs; i++) {
 958                 av_assert0(pic->refs[i]);
 959                 href = pic->refs[i]->priv_data;
 960                 av_assert0(href->pic_order_cnt != hpic->pic_order_cnt);
 961                 if (href->pic_order_cnt < hpic->pic_order_cnt) {
 962                     if (pic->refs[i] != def_l0[n0])
 963                         need_rplm_l0 = 1;
 964                     ++n0;
 965                 } else {
 966                     if (pic->refs[i] != def_l1[n1])
 967                         need_rplm_l1 = 1;
 968                     ++n1;
 969                 }
 970             }
 971
 972             sh->ref_pic_list_modification_flag_l0 = need_rplm_l0;
 973             if (need_rplm_l0) {
 974                 int pic_num = hpic->frame_num;
 975                 for (i = j = 0; i < pic->nb_refs; i++) {
 976                     href = pic->refs[i]->priv_data;
 977                     if (href->pic_order_cnt > hpic->pic_order_cnt)
 978                         continue;
 979                     av_assert0(href->frame_num != pic_num);
 980                     if (href->frame_num < pic_num) {
 981                         sh->rplm_l0[j].modification_of_pic_nums_idc = 0;
 982                         sh->rplm_l0[j].abs_diff_pic_num_minus1 =
 983                             pic_num - href->frame_num - 1;
 984                     } else {
 985                         sh->rplm_l0[j].modification_of_pic_nums_idc = 1;
 986                         sh->rplm_l0[j].abs_diff_pic_num_minus1 =
 987                             href->frame_num - pic_num - 1;
 988                     }
 989                     pic_num = href->frame_num;
 990                     ++j;
 991                 }
 992                 av_assert0(j == n0);
 993                 sh->rplm_l0[j].modification_of_pic_nums_idc = 3;
 994             }
 995
 996             sh->ref_pic_list_modification_flag_l1 = need_rplm_l1;
 997             if (need_rplm_l1) {
 998                 int pic_num = hpic->frame_num;
 999                 for (i = j = 0; i < pic->nb_refs; i++) {
1000                     href = pic->refs[i]->priv_data;
1001                     if (href->pic_order_cnt < hpic->pic_order_cnt)
1002                         continue;
1003                     av_assert0(href->frame_num != pic_num);
1004                     if (href->frame_num < pic_num) {
1005                         sh->rplm_l1[j].modification_of_pic_nums_idc = 0;
1006                         sh->rplm_l1[j].abs_diff_pic_num_minus1 =
1007                             pic_num - href->frame_num - 1;
1008                     } else {
1009                         sh->rplm_l1[j].modification_of_pic_nums_idc = 1;
1010                         sh->rplm_l1[j].abs_diff_pic_num_minus1 =
1011                             href->frame_num - pic_num - 1;
1012                     }
1013                     pic_num = href->frame_num;
1014                     ++j;
1015                 }
1016                 av_assert0(j == n1);
1017                 sh->rplm_l1[j].modification_of_pic_nums_idc = 3;
1018             }
1019         }
1020     }
1021
1022     vslice->macroblock_address = slice->block_start;
1023     vslice->num_macroblocks    = slice->block_size;
1024
1025     vslice->macroblock_info = VA_INVALID_ID;
1026
1027     vslice->slice_type           = sh->slice_type % 5;
1028     vslice->pic_parameter_set_id = sh->pic_parameter_set_id;
1029     vslice->idr_pic_id           = sh->idr_pic_id;
1030
1031     vslice->pic_order_cnt_lsb = sh->pic_order_cnt_lsb;
1032
1033     vslice->direct_spatial_mv_pred_flag = sh->direct_spatial_mv_pred_flag;
1034
1035     for (i = 0; i < FF_ARRAY_ELEMS(vslice->RefPicList0); i++) {
1036         vslice->RefPicList0[i].picture_id = VA_INVALID_ID;
1037         vslice->RefPicList0[i].flags      = VA_PICTURE_H264_INVALID;
1038         vslice->RefPicList1[i].picture_id = VA_INVALID_ID;
1039         vslice->RefPicList1[i].flags      = VA_PICTURE_H264_INVALID;
1040     }
1041
1042     av_assert0(pic->nb_refs <= 2);
1043     if (pic->nb_refs >= 1) {
1044         // Backward reference for P- or B-frame.
1045         av_assert0(pic->type == PICTURE_TYPE_P ||
1046                    pic->type == PICTURE_TYPE_B);
1047         vslice->RefPicList0[0] = vpic->ReferenceFrames[0];
1048     }
1049     if (pic->nb_refs >= 2) {
1050         // Forward reference for B-frame.
1051         av_assert0(pic->type == PICTURE_TYPE_B);
1052         vslice->RefPicList1[0] = vpic->ReferenceFrames[1];
1053     }
1054
1055     vslice->slice_qp_delta = sh->slice_qp_delta;
1056
1057     return 0;
1058 }
1059
1060 static av_cold int vaapi_encode_h264_configure(AVCodecContext *avctx)
1061 {
1062     VAAPIEncodeContext      *ctx = avctx->priv_data;
1063     VAAPIEncodeH264Context *priv = avctx->priv_data;
1064     int err;
1065
1066     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_H264, avctx);
1067     if (err < 0)
1068         return err;
1069
1070     priv->mb_width  = FFALIGN(avctx->width,  16) / 16;
1071     priv->mb_height = FFALIGN(avctx->height, 16) / 16;
1072
1073     if (ctx->va_rc_mode == VA_RC_CQP) {
1074         priv->fixed_qp_p = priv->qp;
1075         if (avctx->i_quant_factor > 0.0)
1076             priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +
1077                                         avctx->i_quant_offset) + 0.5);
1078         else
1079             priv->fixed_qp_idr = priv->fixed_qp_p;
1080         if (avctx->b_quant_factor > 0.0)
1081             priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +
1082                                       avctx->b_quant_offset) + 0.5);
1083         else
1084             priv->fixed_qp_b = priv->fixed_qp_p;
1085
1086         priv->sei &= ~SEI_TIMING;
1087
1088         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
1089                "%d / %d / %d for IDR- / P- / B-frames.\n",
1090                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
1091
1092     } else if (ctx->va_rc_mode == VA_RC_CBR ||
1093                ctx->va_rc_mode == VA_RC_VBR) {
1094         // These still need to be  set for pic_init_qp/slice_qp_delta.
1095         priv->fixed_qp_idr = 26;
1096         priv->fixed_qp_p   = 26;
1097         priv->fixed_qp_b   = 26;
1098
1099     } else {
1100         av_assert0(0 && "Invalid RC mode.");
1101     }
1102
1103     if (priv->sei & SEI_IDENTIFIER) {
1104         const char *lavc  = LIBAVCODEC_IDENT;
1105         const char *vaapi = VA_VERSION_S;
1106         const char *driver;
1107         int len;
1108
1109         memcpy(priv->sei_identifier.uuid_iso_iec_11578,
1110                vaapi_encode_h264_sei_identifier_uuid,
1111                sizeof(priv->sei_identifier.uuid_iso_iec_11578));
1112
1113         driver = vaQueryVendorString(ctx->hwctx->display);
1114         if (!driver)
1115             driver = "unknown driver";
1116
1117         len = snprintf(NULL, 0, "%s / VAAPI %s / %s", lavc, vaapi, driver);
1118         if (len >= 0) {
1119             priv->sei_identifier_string = av_malloc(len + 1);
1120             if (!priv->sei_identifier_string)
1121                 return AVERROR(ENOMEM);
1122
1123             snprintf(priv->sei_identifier_string, len + 1,
1124                      "%s / VAAPI %s / %s", lavc, vaapi, driver);
1125
1126             priv->sei_identifier.data        = priv->sei_identifier_string;
1127             priv->sei_identifier.data_length = len + 1;
1128         }
1129     }
1130
1131     return 0;
1132 }
1133
1134 static const VAAPIEncodeProfile vaapi_encode_h264_profiles[] = {
1135     { FF_PROFILE_H264_HIGH, 8, 3, 1, 1, VAProfileH264High },
1136     { FF_PROFILE_H264_MAIN, 8, 3, 1, 1, VAProfileH264Main },
1137     { FF_PROFILE_H264_CONSTRAINED_BASELINE,
1138                             8, 3, 1, 1, VAProfileH264ConstrainedBaseline },
1139     { FF_PROFILE_UNKNOWN }
1140 };
1141
1142 static const VAAPIEncodeType vaapi_encode_type_h264 = {
1143     .profiles              = vaapi_encode_h264_profiles,
1144
1145     .flags                 = FLAG_SLICE_CONTROL |
1146                              FLAG_B_PICTURES |
1147                              FLAG_B_PICTURE_REFERENCES |
1148                              FLAG_NON_IDR_KEY_PICTURES,
1149
1150     .configure             = &vaapi_encode_h264_configure,
1151
1152     .picture_priv_data_size = sizeof(VAAPIEncodeH264Picture),
1153
1154     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),
1155     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,
1156
1157     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),
1158     .init_picture_params   = &vaapi_encode_h264_init_picture_params,
1159
1160     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),
1161     .init_slice_params     = &vaapi_encode_h264_init_slice_params,
1162
1163     .sequence_header_type  = VAEncPackedHeaderSequence,
1164     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,
1165
1166     .slice_header_type     = VAEncPackedHeaderH264_Slice,
1167     .write_slice_header    = &vaapi_encode_h264_write_slice_header,
1168
1169     .write_extra_header    = &vaapi_encode_h264_write_extra_header,
1170 };
1171
1172 static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
1173 {
1174     VAAPIEncodeContext      *ctx = avctx->priv_data;
1175     VAAPIEncodeH264Context *priv = avctx->priv_data;
1176
1177     ctx->codec = &vaapi_encode_type_h264;
1178
1179     if (avctx->profile == FF_PROFILE_UNKNOWN)
1180         avctx->profile = priv->profile;
1181     if (avctx->level == FF_LEVEL_UNKNOWN)
1182         avctx->level = priv->level;
1183     if (avctx->compression_level == FF_COMPRESSION_DEFAULT)
1184         avctx->compression_level = priv->quality;
1185
1186     // Reject unsupported profiles.
1187     switch (avctx->profile) {
1188     case FF_PROFILE_H264_BASELINE:
1189         av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile is not "
1190                "supported, using constrained baseline profile instead.\n");
1191         avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;
1192         break;
1193     case FF_PROFILE_H264_EXTENDED:
1194         av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "
1195                "is not supported.\n");
1196         return AVERROR_PATCHWELCOME;
1197     case FF_PROFILE_H264_HIGH_10:
1198     case FF_PROFILE_H264_HIGH_10_INTRA:
1199         av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "
1200                "are not supported.\n");
1201         return AVERROR_PATCHWELCOME;
1202     case FF_PROFILE_H264_HIGH_422:
1203     case FF_PROFILE_H264_HIGH_422_INTRA:
1204     case FF_PROFILE_H264_HIGH_444:
1205     case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
1206     case FF_PROFILE_H264_HIGH_444_INTRA:
1207     case FF_PROFILE_H264_CAVLC_444:
1208         av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "
1209                "are not supported.\n");
1210         return AVERROR_PATCHWELCOME;
1211     }
1212
1213     if (avctx->level != FF_LEVEL_UNKNOWN && avctx->level & ~0xff) {
1214         av_log(avctx, AV_LOG_ERROR, "Invalid level %d: must fit "
1215                "in 8-bit unsigned integer.\n", avctx->level);
1216         return AVERROR(EINVAL);
1217     }
1218
1219     ctx->desired_packed_headers =
1220         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.
1221         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.
1222         VA_ENC_PACKED_HEADER_MISC;      // SEI.
1223
1224     ctx->surface_width  = FFALIGN(avctx->width,  16);
1225     ctx->surface_height = FFALIGN(avctx->height, 16);
1226
1227     ctx->slice_block_height = ctx->slice_block_width = 16;
1228
1229     return ff_vaapi_encode_init(avctx);
1230 }
1231
1232 static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)
1233 {
1234     VAAPIEncodeH264Context *priv = avctx->priv_data;
1235
1236     ff_cbs_close(&priv->cbc);
1237     av_freep(&priv->sei_identifier_string);
1238
1239     return ff_vaapi_encode_close(avctx);
1240 }
1241
1242 #define OFFSET(x) offsetof(VAAPIEncodeH264Context, x)
1243 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
1244 static const AVOption vaapi_encode_h264_options[] = {
1245     VAAPI_ENCODE_COMMON_OPTIONS,
1246
1247     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
1248       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 20 }, 0, 52, FLAGS },
1249     { "quality", "Set encode quality (trades off against speed, higher is faster)",
1250       OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
1251     { "coder", "Entropy coder type",
1252       OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },
1253         { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1254         { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1255         { "vlc",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1256         { "ac",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1257
1258     { "aud", "Include AUD",
1259       OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
1260
1261     { "sei", "Set SEI to include",
1262       OFFSET(sei), AV_OPT_TYPE_FLAGS,
1263       { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },
1264       0, INT_MAX, FLAGS, "sei" },
1265     { "identifier", "Include encoder version identifier",
1266       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },
1267       INT_MIN, INT_MAX, FLAGS, "sei" },
1268     { "timing", "Include timing parameters (buffering_period and pic_timing)",
1269       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },
1270       INT_MIN, INT_MAX, FLAGS, "sei" },
1271     { "recovery_point", "Include recovery points where appropriate",
1272       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },
1273       INT_MIN, INT_MAX, FLAGS, "sei" },
1274
1275     { "profile", "Set profile (profile_idc and constraint_set*_flag)",
1276       OFFSET(profile), AV_OPT_TYPE_INT,
1277       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xffff, FLAGS, "profile" },
1278
1279 #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \
1280       { .i64 = value }, 0, 0, FLAGS, "profile"
1281     { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },
1282     { PROFILE("main",                 FF_PROFILE_H264_MAIN) },
1283     { PROFILE("high",                 FF_PROFILE_H264_HIGH) },
1284 #undef PROFILE
1285
1286     { "level", "Set level (level_idc)",
1287       OFFSET(level), AV_OPT_TYPE_INT,
1288       { .i64 = FF_LEVEL_UNKNOWN }, FF_LEVEL_UNKNOWN, 0xff, FLAGS, "level" },
1289
1290 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
1291       { .i64 = value }, 0, 0, FLAGS, "level"
1292     { LEVEL("1",   10) },
1293     { LEVEL("1.1", 11) },
1294     { LEVEL("1.2", 12) },
1295     { LEVEL("1.3", 13) },
1296     { LEVEL("2",   20) },
1297     { LEVEL("2.1", 21) },
1298     { LEVEL("2.2", 22) },
1299     { LEVEL("3",   30) },
1300     { LEVEL("3.1", 31) },
1301     { LEVEL("3.2", 32) },
1302     { LEVEL("4",   40) },
1303     { LEVEL("4.1", 41) },
1304     { LEVEL("4.2", 42) },
1305     { LEVEL("5",   50) },
1306     { LEVEL("5.1", 51) },
1307     { LEVEL("5.2", 52) },
1308     { LEVEL("6",   60) },
1309     { LEVEL("6.1", 61) },
1310     { LEVEL("6.2", 62) },
1311 #undef LEVEL
1312
1313     { NULL },
1314 };
1315
1316 static const AVCodecDefault vaapi_encode_h264_defaults[] = {
1317     { "b",              "0"   },
1318     { "bf",             "2"   },
1319     { "g",              "120" },
1320     { "i_qfactor",      "1"   },
1321     { "i_qoffset",      "0"   },
1322     { "b_qfactor",      "6/5" },
1323     { "b_qoffset",      "0"   },
1324     { "qmin",           "-1"  },
1325     { "qmax",           "-1"  },
1326     { NULL },
1327 };
1328
1329 static const AVClass vaapi_encode_h264_class = {
1330     .class_name = "h264_vaapi",
1331     .item_name  = av_default_item_name,
1332     .option     = vaapi_encode_h264_options,
1333     .version    = LIBAVUTIL_VERSION_INT,
1334 };
1335
1336 AVCodec ff_h264_vaapi_encoder = {
1337     .name           = "h264_vaapi",
1338     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),
1339     .type           = AVMEDIA_TYPE_VIDEO,
1340     .id             = AV_CODEC_ID_H264,
1341     .priv_data_size = sizeof(VAAPIEncodeH264Context),
1342     .init           = &vaapi_encode_h264_init,
1343     .send_frame     = &ff_vaapi_encode_send_frame,
1344     .receive_packet = &ff_vaapi_encode_receive_packet,
1345     .close          = &vaapi_encode_h264_close,
1346     .priv_class     = &vaapi_encode_h264_class,
1347     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
1348     .defaults       = vaapi_encode_h264_defaults,
1349     .pix_fmts = (const enum AVPixelFormat[]) {
1350         AV_PIX_FMT_VAAPI,
1351         AV_PIX_FMT_NONE,
1352     },
1353     .wrapper_name   = "vaapi",
1354 };