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     H264RawNALUnitHeader *header = nal_unit;
 139     int err;
 140
 141     err = ff_cbs_insert_unit_content(au, -1,
 142                                      header->nal_unit_type, nal_unit, NULL);
 143     if (err < 0) {
 144         av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: "
 145                "type = %d.\n", header->nal_unit_type);
 146         return err;
 147     }
 148
 149     return 0;
 150 }
 151
 152 static int vaapi_encode_h264_write_sequence_header(AVCodecContext *avctx,
 153                                                    char *data, size_t *data_len)
 154 {
 155     VAAPIEncodeH264Context *priv = avctx->priv_data;
 156     CodedBitstreamFragment   *au = &priv->current_access_unit;
 157     int err;
 158
 159     if (priv->aud_needed) {
 160         err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);
 161         if (err < 0)
 162             goto fail;
 163         priv->aud_needed = 0;
 164     }
 165
 166     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_sps);
 167     if (err < 0)
 168         goto fail;
 169
 170     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_pps);
 171     if (err < 0)
 172         goto fail;
 173
 174     err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 175 fail:
 176     ff_cbs_fragment_reset(au);
 177     return err;
 178 }
 179
 180 static int vaapi_encode_h264_write_slice_header(AVCodecContext *avctx,
 181                                                 VAAPIEncodePicture *pic,
 182                                                 VAAPIEncodeSlice *slice,
 183                                                 char *data, size_t *data_len)
 184 {
 185     VAAPIEncodeH264Context *priv = avctx->priv_data;
 186     CodedBitstreamFragment   *au = &priv->current_access_unit;
 187     int err;
 188
 189     if (priv->aud_needed) {
 190         err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);
 191         if (err < 0)
 192             goto fail;
 193         priv->aud_needed = 0;
 194     }
 195
 196     err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_slice);
 197     if (err < 0)
 198         goto fail;
 199
 200     err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 201 fail:
 202     ff_cbs_fragment_reset(au);
 203     return err;
 204 }
 205
 206 static int vaapi_encode_h264_write_extra_header(AVCodecContext *avctx,
 207                                                 VAAPIEncodePicture *pic,
 208                                                 int index, int *type,
 209                                                 char *data, size_t *data_len)
 210 {
 211     VAAPIEncodeH264Context *priv = avctx->priv_data;
 212     CodedBitstreamFragment   *au = &priv->current_access_unit;
 213     int err, i;
 214
 215     if (priv->sei_needed) {
 216         H264RawSEI *sei = &priv->raw_sei;
 217
 218         if (priv->aud_needed) {
 219             err = vaapi_encode_h264_add_nal(avctx, au, &priv->raw_aud);
 220             if (err < 0)
 221                 goto fail;
 222             priv->aud_needed = 0;
 223         }
 224
 225         *sei = (H264RawSEI) {
 226             .nal_unit_header = {
 227                 .nal_unit_type = H264_NAL_SEI,
 228             },
 229         };
 230
 231         i = 0;
 232
 233         if (priv->sei_needed & SEI_IDENTIFIER) {
 234             sei->payload[i].payload_type = H264_SEI_TYPE_USER_DATA_UNREGISTERED;
 235             sei->payload[i].payload.user_data_unregistered = priv->sei_identifier;
 236             ++i;
 237         }
 238         if (priv->sei_needed & SEI_TIMING) {
 239             if (pic->type == PICTURE_TYPE_IDR) {
 240                 sei->payload[i].payload_type = H264_SEI_TYPE_BUFFERING_PERIOD;
 241                 sei->payload[i].payload.buffering_period = priv->sei_buffering_period;
 242                 ++i;
 243             }
 244             sei->payload[i].payload_type = H264_SEI_TYPE_PIC_TIMING;
 245             sei->payload[i].payload.pic_timing = priv->sei_pic_timing;
 246             ++i;
 247         }
 248         if (priv->sei_needed & SEI_RECOVERY_POINT) {
 249             sei->payload[i].payload_type = H264_SEI_TYPE_RECOVERY_POINT;
 250             sei->payload[i].payload.recovery_point = priv->sei_recovery_point;
 251             ++i;
 252         }
 253
 254         sei->payload_count = i;
 255         av_assert0(sei->payload_count > 0);
 256
 257         err = vaapi_encode_h264_add_nal(avctx, au, sei);
 258         if (err < 0)
 259             goto fail;
 260         priv->sei_needed = 0;
 261
 262         err = vaapi_encode_h264_write_access_unit(avctx, data, data_len, au);
 263         if (err < 0)
 264             goto fail;
 265
 266         ff_cbs_fragment_reset(au);
 267
 268         *type = VAEncPackedHeaderRawData;
 269         return 0;
 270
 271 #if !CONFIG_VAAPI_1
 272     } else if (priv->sei_cbr_workaround_needed) {
 273         // Insert a zero-length header using the old SEI type.  This is
 274         // required to avoid triggering broken behaviour on Intel platforms
 275         // in CBR mode where an invalid SEI message is generated by the
 276         // driver and inserted into the stream.
 277         *data_len = 0;
 278         *type = VAEncPackedHeaderH264_SEI;
 279         priv->sei_cbr_workaround_needed = 0;
 280         return 0;
 281 #endif
 282
 283     } else {
 284         return AVERROR_EOF;
 285     }
 286
 287 fail:
 288     ff_cbs_fragment_reset(au);
 289     return err;
 290 }
 291
 292 static int vaapi_encode_h264_init_sequence_params(AVCodecContext *avctx)
 293 {
 294     VAAPIEncodeContext                *ctx = avctx->priv_data;
 295     VAAPIEncodeH264Context           *priv = avctx->priv_data;
 296     H264RawSPS                        *sps = &priv->raw_sps;
 297     H264RawPPS                        *pps = &priv->raw_pps;
 298     VAEncSequenceParameterBufferH264 *vseq = ctx->codec_sequence_params;
 299     VAEncPictureParameterBufferH264  *vpic = ctx->codec_picture_params;
 300
 301     memset(sps, 0, sizeof(*sps));
 302     memset(pps, 0, sizeof(*pps));
 303
 304     sps->nal_unit_header.nal_ref_idc   = 3;
 305     sps->nal_unit_header.nal_unit_type = H264_NAL_SPS;
 306
 307     sps->profile_idc = avctx->profile & 0xff;
 308
 309     if (avctx->profile == FF_PROFILE_H264_CONSTRAINED_BASELINE ||
 310         avctx->profile == FF_PROFILE_H264_MAIN)
 311         sps->constraint_set1_flag = 1;
 312
 313     if (avctx->profile == FF_PROFILE_H264_HIGH)
 314         sps->constraint_set3_flag = ctx->gop_size == 1;
 315
 316     if (avctx->profile == FF_PROFILE_H264_MAIN ||
 317         avctx->profile == FF_PROFILE_H264_HIGH) {
 318         sps->constraint_set4_flag = 1;
 319         sps->constraint_set5_flag = ctx->b_per_p == 0;
 320     }
 321
 322     if (ctx->gop_size == 1)
 323         priv->dpb_frames = 0;
 324     else
 325         priv->dpb_frames = 1 + ctx->max_b_depth;
 326
 327     if (avctx->level != FF_LEVEL_UNKNOWN) {
 328         sps->level_idc = avctx->level;
 329     } else {
 330         const H264LevelDescriptor *level;
 331         int framerate;
 332
 333         if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
 334             framerate = avctx->framerate.num / avctx->framerate.den;
 335         else
 336             framerate = 0;
 337
 338         level = ff_h264_guess_level(sps->profile_idc,
 339                                     avctx->bit_rate,
 340                                     framerate,
 341                                     priv->mb_width  * 16,
 342                                     priv->mb_height * 16,
 343                                     priv->dpb_frames);
 344         if (level) {
 345             av_log(avctx, AV_LOG_VERBOSE, "Using level %s.\n", level->name);
 346             if (level->constraint_set3_flag)
 347                 sps->constraint_set3_flag = 1;
 348             sps->level_idc = level->level_idc;
 349         } else {
 350             av_log(avctx, AV_LOG_WARNING, "Stream will not conform "
 351                    "to any level: using level 6.2.\n");
 352             sps->level_idc = 62;
 353         }
 354     }
 355
 356     sps->seq_parameter_set_id = 0;
 357     sps->chroma_format_idc    = 1;
 358
 359     sps->log2_max_frame_num_minus4 = 4;
 360     sps->pic_order_cnt_type        = 0;
 361     sps->log2_max_pic_order_cnt_lsb_minus4 = 4;
 362
 363     sps->max_num_ref_frames = priv->dpb_frames;
 364
 365     sps->pic_width_in_mbs_minus1        = priv->mb_width  - 1;
 366     sps->pic_height_in_map_units_minus1 = priv->mb_height - 1;
 367
 368     sps->frame_mbs_only_flag = 1;
 369     sps->direct_8x8_inference_flag = 1;
 370
 371     if (avctx->width  != 16 * priv->mb_width ||
 372         avctx->height != 16 * priv->mb_height) {
 373         sps->frame_cropping_flag = 1;
 374
 375         sps->frame_crop_left_offset   = 0;
 376         sps->frame_crop_right_offset  =
 377             (16 * priv->mb_width - avctx->width) / 2;
 378         sps->frame_crop_top_offset    = 0;
 379         sps->frame_crop_bottom_offset =
 380             (16 * priv->mb_height - avctx->height) / 2;
 381     } else {
 382         sps->frame_cropping_flag = 0;
 383     }
 384
 385     sps->vui_parameters_present_flag = 1;
 386
 387     if (avctx->sample_aspect_ratio.num != 0 &&
 388         avctx->sample_aspect_ratio.den != 0) {
 389         static const AVRational sar_idc[] = {
 390             {   0,  0 },
 391             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },
 392             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },
 393             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },
 394             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },
 395         };
 396         int num, den, i;
 397         av_reduce(&num, &den, avctx->sample_aspect_ratio.num,
 398                   avctx->sample_aspect_ratio.den, 65535);
 399         for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) {
 400             if (num == sar_idc[i].num &&
 401                 den == sar_idc[i].den) {
 402                 sps->vui.aspect_ratio_idc = i;
 403                 break;
 404             }
 405         }
 406         if (i >= FF_ARRAY_ELEMS(sar_idc)) {
 407             sps->vui.aspect_ratio_idc = 255;
 408             sps->vui.sar_width  = num;
 409             sps->vui.sar_height = den;
 410         }
 411         sps->vui.aspect_ratio_info_present_flag = 1;
 412     }
 413
 414     if (avctx->color_range     != AVCOL_RANGE_UNSPECIFIED ||
 415         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 416         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 417         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 418         sps->vui.video_signal_type_present_flag = 1;
 419         sps->vui.video_format      = 5; // Unspecified.
 420         sps->vui.video_full_range_flag =
 421             avctx->color_range == AVCOL_RANGE_JPEG;
 422
 423         if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 424             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 425             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 426             sps->vui.colour_description_present_flag = 1;
 427             sps->vui.colour_primaries         = avctx->color_primaries;
 428             sps->vui.transfer_characteristics = avctx->color_trc;
 429             sps->vui.matrix_coefficients      = avctx->colorspace;
 430         }
 431     } else {
 432         sps->vui.video_format             = 5;
 433         sps->vui.video_full_range_flag    = 0;
 434         sps->vui.colour_primaries         = avctx->color_primaries;
 435         sps->vui.transfer_characteristics = avctx->color_trc;
 436         sps->vui.matrix_coefficients      = avctx->colorspace;
 437     }
 438
 439     if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
 440         sps->vui.chroma_loc_info_present_flag = 1;
 441         sps->vui.chroma_sample_loc_type_top_field    =
 442         sps->vui.chroma_sample_loc_type_bottom_field =
 443             avctx->chroma_sample_location - 1;
 444     }
 445
 446     sps->vui.timing_info_present_flag = 1;
 447     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
 448         sps->vui.num_units_in_tick = avctx->framerate.den;
 449         sps->vui.time_scale        = 2 * avctx->framerate.num;
 450         sps->vui.fixed_frame_rate_flag = 1;
 451     } else {
 452         sps->vui.num_units_in_tick = avctx->time_base.num;
 453         sps->vui.time_scale        = 2 * avctx->time_base.den;
 454         sps->vui.fixed_frame_rate_flag = 0;
 455     }
 456
 457     if (priv->sei & SEI_TIMING) {
 458         H264RawHRD *hrd = &sps->vui.nal_hrd_parameters;
 459         H264RawSEIBufferingPeriod *bp = &priv->sei_buffering_period;
 460
 461         sps->vui.nal_hrd_parameters_present_flag = 1;
 462
 463         hrd->cpb_cnt_minus1 = 0;
 464
 465         // Try to scale these to a sensible range so that the
 466         // golomb encode of the value is not overlong.
 467         hrd->bit_rate_scale =
 468             av_clip_uintp2(av_log2(ctx->va_bit_rate) - 15 - 6, 4);
 469         hrd->bit_rate_value_minus1[0] =
 470             (ctx->va_bit_rate >> hrd->bit_rate_scale + 6) - 1;
 471
 472         hrd->cpb_size_scale =
 473             av_clip_uintp2(av_log2(ctx->hrd_params.buffer_size) - 15 - 4, 4);
 474         hrd->cpb_size_value_minus1[0] =
 475             (ctx->hrd_params.buffer_size >> hrd->cpb_size_scale + 4) - 1;
 476
 477         // CBR mode as defined for the HRD cannot be achieved without filler
 478         // data, so this flag cannot be set even with VAAPI CBR modes.
 479         hrd->cbr_flag[0] = 0;
 480
 481         hrd->initial_cpb_removal_delay_length_minus1 = 23;
 482         hrd->cpb_removal_delay_length_minus1         = 23;
 483         hrd->dpb_output_delay_length_minus1          = 7;
 484         hrd->time_offset_length                      = 0;
 485
 486         bp->seq_parameter_set_id = sps->seq_parameter_set_id;
 487
 488         // This calculation can easily overflow 32 bits.
 489         bp->nal.initial_cpb_removal_delay[0] = 90000 *
 490             (uint64_t)ctx->hrd_params.initial_buffer_fullness /
 491             ctx->hrd_params.buffer_size;
 492         bp->nal.initial_cpb_removal_delay_offset[0] = 0;
 493     } else {
 494         sps->vui.nal_hrd_parameters_present_flag = 0;
 495         sps->vui.low_delay_hrd_flag = 1 - sps->vui.fixed_frame_rate_flag;
 496     }
 497
 498     sps->vui.bitstream_restriction_flag    = 1;
 499     sps->vui.motion_vectors_over_pic_boundaries_flag = 1;
 500     sps->vui.log2_max_mv_length_horizontal = 15;
 501     sps->vui.log2_max_mv_length_vertical   = 15;
 502     sps->vui.max_num_reorder_frames        = ctx->max_b_depth;
 503     sps->vui.max_dec_frame_buffering       = ctx->max_b_depth + 1;
 504
 505     pps->nal_unit_header.nal_ref_idc = 3;
 506     pps->nal_unit_header.nal_unit_type = H264_NAL_PPS;
 507
 508     pps->pic_parameter_set_id = 0;
 509     pps->seq_parameter_set_id = 0;
 510
 511     pps->entropy_coding_mode_flag =
 512         !(sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 513           sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 514           sps->profile_idc == FF_PROFILE_H264_CAVLC_444);
 515     if (!priv->coder && pps->entropy_coding_mode_flag)
 516         pps->entropy_coding_mode_flag = 0;
 517
 518     pps->num_ref_idx_l0_default_active_minus1 = 0;
 519     pps->num_ref_idx_l1_default_active_minus1 = 0;
 520
 521     pps->pic_init_qp_minus26 = priv->fixed_qp_idr - 26;
 522
 523     if (sps->profile_idc == FF_PROFILE_H264_BASELINE ||
 524         sps->profile_idc == FF_PROFILE_H264_EXTENDED ||
 525         sps->profile_idc == FF_PROFILE_H264_MAIN) {
 526         pps->more_rbsp_data = 0;
 527     } else {
 528         pps->more_rbsp_data = 1;
 529
 530         pps->transform_8x8_mode_flag = 1;
 531     }
 532
 533     *vseq = (VAEncSequenceParameterBufferH264) {
 534         .seq_parameter_set_id = sps->seq_parameter_set_id,
 535         .level_idc        = sps->level_idc,
 536         .intra_period     = ctx->gop_size,
 537         .intra_idr_period = ctx->gop_size,
 538         .ip_period        = ctx->b_per_p + 1,
 539
 540         .bits_per_second       = ctx->va_bit_rate,
 541         .max_num_ref_frames    = sps->max_num_ref_frames,
 542         .picture_width_in_mbs  = sps->pic_width_in_mbs_minus1 + 1,
 543         .picture_height_in_mbs = sps->pic_height_in_map_units_minus1 + 1,
 544
 545         .seq_fields.bits = {
 546             .chroma_format_idc                 = sps->chroma_format_idc,
 547             .frame_mbs_only_flag               = sps->frame_mbs_only_flag,
 548             .mb_adaptive_frame_field_flag      = sps->mb_adaptive_frame_field_flag,
 549             .seq_scaling_matrix_present_flag   = sps->seq_scaling_matrix_present_flag,
 550             .direct_8x8_inference_flag         = sps->direct_8x8_inference_flag,
 551             .log2_max_frame_num_minus4         = sps->log2_max_frame_num_minus4,
 552             .pic_order_cnt_type                = sps->pic_order_cnt_type,
 553             .log2_max_pic_order_cnt_lsb_minus4 = sps->log2_max_pic_order_cnt_lsb_minus4,
 554             .delta_pic_order_always_zero_flag  = sps->delta_pic_order_always_zero_flag,
 555         },
 556
 557         .bit_depth_luma_minus8   = sps->bit_depth_luma_minus8,
 558         .bit_depth_chroma_minus8 = sps->bit_depth_chroma_minus8,
 559
 560         .frame_cropping_flag      = sps->frame_cropping_flag,
 561         .frame_crop_left_offset   = sps->frame_crop_left_offset,
 562         .frame_crop_right_offset  = sps->frame_crop_right_offset,
 563         .frame_crop_top_offset    = sps->frame_crop_top_offset,
 564         .frame_crop_bottom_offset = sps->frame_crop_bottom_offset,
 565
 566         .vui_parameters_present_flag = sps->vui_parameters_present_flag,
 567
 568         .vui_fields.bits = {
 569             .aspect_ratio_info_present_flag = sps->vui.aspect_ratio_info_present_flag,
 570             .timing_info_present_flag       = sps->vui.timing_info_present_flag,
 571             .bitstream_restriction_flag     = sps->vui.bitstream_restriction_flag,
 572             .log2_max_mv_length_horizontal  = sps->vui.log2_max_mv_length_horizontal,
 573             .log2_max_mv_length_vertical    = sps->vui.log2_max_mv_length_vertical,
 574         },
 575
 576         .aspect_ratio_idc  = sps->vui.aspect_ratio_idc,
 577         .sar_width         = sps->vui.sar_width,
 578         .sar_height        = sps->vui.sar_height,
 579         .num_units_in_tick = sps->vui.num_units_in_tick,
 580         .time_scale        = sps->vui.time_scale,
 581     };
 582
 583     *vpic = (VAEncPictureParameterBufferH264) {
 584         .CurrPic = {
 585             .picture_id = VA_INVALID_ID,
 586             .flags      = VA_PICTURE_H264_INVALID,
 587         },
 588
 589         .coded_buf = VA_INVALID_ID,
 590
 591         .pic_parameter_set_id = pps->pic_parameter_set_id,
 592         .seq_parameter_set_id = pps->seq_parameter_set_id,
 593
 594         .pic_init_qp                  = pps->pic_init_qp_minus26 + 26,
 595         .num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1,
 596         .num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1,
 597
 598         .chroma_qp_index_offset        = pps->chroma_qp_index_offset,
 599         .second_chroma_qp_index_offset = pps->second_chroma_qp_index_offset,
 600
 601         .pic_fields.bits = {
 602             .entropy_coding_mode_flag        = pps->entropy_coding_mode_flag,
 603             .weighted_pred_flag              = pps->weighted_pred_flag,
 604             .weighted_bipred_idc             = pps->weighted_bipred_idc,
 605             .constrained_intra_pred_flag     = pps->constrained_intra_pred_flag,
 606             .transform_8x8_mode_flag         = pps->transform_8x8_mode_flag,
 607             .deblocking_filter_control_present_flag =
 608                 pps->deblocking_filter_control_present_flag,
 609             .redundant_pic_cnt_present_flag  = pps->redundant_pic_cnt_present_flag,
 610             .pic_order_present_flag          =
 611                 pps->bottom_field_pic_order_in_frame_present_flag,
 612             .pic_scaling_matrix_present_flag = pps->pic_scaling_matrix_present_flag,
 613         },
 614     };
 615
 616     return 0;
 617 }
 618
 619 static int vaapi_encode_h264_init_picture_params(AVCodecContext *avctx,
 620                                                  VAAPIEncodePicture *pic)
 621 {
 622     VAAPIEncodeContext               *ctx = avctx->priv_data;
 623     VAAPIEncodeH264Context          *priv = avctx->priv_data;
 624     VAAPIEncodeH264Picture          *hpic = pic->priv_data;
 625     VAAPIEncodePicture              *prev = pic->prev;
 626     VAAPIEncodeH264Picture         *hprev = prev ? prev->priv_data : NULL;
 627     VAEncPictureParameterBufferH264 *vpic = pic->codec_picture_params;
 628     int i;
 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 = av_clip(ctx->rc_quality, 1, 51);
1075         if (avctx->i_quant_factor > 0.0)
1076             priv->fixed_qp_idr =
1077                 av_clip((avctx->i_quant_factor * priv->fixed_qp_p +
1078                          avctx->i_quant_offset) + 0.5, 1, 51);
1079         else
1080             priv->fixed_qp_idr = priv->fixed_qp_p;
1081         if (avctx->b_quant_factor > 0.0)
1082             priv->fixed_qp_b =
1083                 av_clip((avctx->b_quant_factor * priv->fixed_qp_p +
1084                          avctx->b_quant_offset) + 0.5, 1, 51);
1085         else
1086             priv->fixed_qp_b = priv->fixed_qp_p;
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 {
1093         // These still need to be  set for pic_init_qp/slice_qp_delta.
1094         priv->fixed_qp_idr = 26;
1095         priv->fixed_qp_p   = 26;
1096         priv->fixed_qp_b   = 26;
1097     }
1098
1099     if (!ctx->rc_mode->hrd) {
1100         // Timing SEI requires a mode respecting HRD parameters.
1101         priv->sei &= ~SEI_TIMING;
1102     }
1103
1104     if (priv->sei & SEI_IDENTIFIER) {
1105         const char *lavc  = LIBAVCODEC_IDENT;
1106         const char *vaapi = VA_VERSION_S;
1107         const char *driver;
1108         int len;
1109
1110         memcpy(priv->sei_identifier.uuid_iso_iec_11578,
1111                vaapi_encode_h264_sei_identifier_uuid,
1112                sizeof(priv->sei_identifier.uuid_iso_iec_11578));
1113
1114         driver = vaQueryVendorString(ctx->hwctx->display);
1115         if (!driver)
1116             driver = "unknown driver";
1117
1118         len = snprintf(NULL, 0, "%s / VAAPI %s / %s", lavc, vaapi, driver);
1119         if (len >= 0) {
1120             priv->sei_identifier_string = av_malloc(len + 1);
1121             if (!priv->sei_identifier_string)
1122                 return AVERROR(ENOMEM);
1123
1124             snprintf(priv->sei_identifier_string, len + 1,
1125                      "%s / VAAPI %s / %s", lavc, vaapi, driver);
1126
1127             priv->sei_identifier.data        = priv->sei_identifier_string;
1128             priv->sei_identifier.data_length = len + 1;
1129         }
1130     }
1131
1132     ctx->roi_quant_range = 51 + 6 * (ctx->profile->depth - 8);
1133
1134     return 0;
1135 }
1136
1137 static const VAAPIEncodeProfile vaapi_encode_h264_profiles[] = {
1138     { FF_PROFILE_H264_HIGH, 8, 3, 1, 1, VAProfileH264High },
1139     { FF_PROFILE_H264_MAIN, 8, 3, 1, 1, VAProfileH264Main },
1140     { FF_PROFILE_H264_CONSTRAINED_BASELINE,
1141                             8, 3, 1, 1, VAProfileH264ConstrainedBaseline },
1142     { FF_PROFILE_UNKNOWN }
1143 };
1144
1145 static const VAAPIEncodeType vaapi_encode_type_h264 = {
1146     .profiles              = vaapi_encode_h264_profiles,
1147
1148     .flags                 = FLAG_SLICE_CONTROL |
1149                              FLAG_B_PICTURES |
1150                              FLAG_B_PICTURE_REFERENCES |
1151                              FLAG_NON_IDR_KEY_PICTURES,
1152
1153     .default_quality       = 20,
1154
1155     .configure             = &vaapi_encode_h264_configure,
1156
1157     .picture_priv_data_size = sizeof(VAAPIEncodeH264Picture),
1158
1159     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferH264),
1160     .init_sequence_params  = &vaapi_encode_h264_init_sequence_params,
1161
1162     .picture_params_size   = sizeof(VAEncPictureParameterBufferH264),
1163     .init_picture_params   = &vaapi_encode_h264_init_picture_params,
1164
1165     .slice_params_size     = sizeof(VAEncSliceParameterBufferH264),
1166     .init_slice_params     = &vaapi_encode_h264_init_slice_params,
1167
1168     .sequence_header_type  = VAEncPackedHeaderSequence,
1169     .write_sequence_header = &vaapi_encode_h264_write_sequence_header,
1170
1171     .slice_header_type     = VAEncPackedHeaderH264_Slice,
1172     .write_slice_header    = &vaapi_encode_h264_write_slice_header,
1173
1174     .write_extra_header    = &vaapi_encode_h264_write_extra_header,
1175 };
1176
1177 static av_cold int vaapi_encode_h264_init(AVCodecContext *avctx)
1178 {
1179     VAAPIEncodeContext      *ctx = avctx->priv_data;
1180     VAAPIEncodeH264Context *priv = avctx->priv_data;
1181
1182     ctx->codec = &vaapi_encode_type_h264;
1183
1184     if (avctx->profile == FF_PROFILE_UNKNOWN)
1185         avctx->profile = priv->profile;
1186     if (avctx->level == FF_LEVEL_UNKNOWN)
1187         avctx->level = priv->level;
1188     if (avctx->compression_level == FF_COMPRESSION_DEFAULT)
1189         avctx->compression_level = priv->quality;
1190
1191     // Reject unsupported profiles.
1192     switch (avctx->profile) {
1193     case FF_PROFILE_H264_BASELINE:
1194         av_log(avctx, AV_LOG_WARNING, "H.264 baseline profile is not "
1195                "supported, using constrained baseline profile instead.\n");
1196         avctx->profile = FF_PROFILE_H264_CONSTRAINED_BASELINE;
1197         break;
1198     case FF_PROFILE_H264_EXTENDED:
1199         av_log(avctx, AV_LOG_ERROR, "H.264 extended profile "
1200                "is not supported.\n");
1201         return AVERROR_PATCHWELCOME;
1202     case FF_PROFILE_H264_HIGH_10:
1203     case FF_PROFILE_H264_HIGH_10_INTRA:
1204         av_log(avctx, AV_LOG_ERROR, "H.264 10-bit profiles "
1205                "are not supported.\n");
1206         return AVERROR_PATCHWELCOME;
1207     case FF_PROFILE_H264_HIGH_422:
1208     case FF_PROFILE_H264_HIGH_422_INTRA:
1209     case FF_PROFILE_H264_HIGH_444:
1210     case FF_PROFILE_H264_HIGH_444_PREDICTIVE:
1211     case FF_PROFILE_H264_HIGH_444_INTRA:
1212     case FF_PROFILE_H264_CAVLC_444:
1213         av_log(avctx, AV_LOG_ERROR, "H.264 non-4:2:0 profiles "
1214                "are not supported.\n");
1215         return AVERROR_PATCHWELCOME;
1216     }
1217
1218     if (avctx->level != FF_LEVEL_UNKNOWN && avctx->level & ~0xff) {
1219         av_log(avctx, AV_LOG_ERROR, "Invalid level %d: must fit "
1220                "in 8-bit unsigned integer.\n", avctx->level);
1221         return AVERROR(EINVAL);
1222     }
1223
1224     ctx->desired_packed_headers =
1225         VA_ENC_PACKED_HEADER_SEQUENCE | // SPS and PPS.
1226         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.
1227         VA_ENC_PACKED_HEADER_MISC;      // SEI.
1228
1229     ctx->surface_width  = FFALIGN(avctx->width,  16);
1230     ctx->surface_height = FFALIGN(avctx->height, 16);
1231
1232     ctx->slice_block_height = ctx->slice_block_width = 16;
1233
1234     if (priv->qp > 0)
1235         ctx->explicit_qp = priv->qp;
1236
1237     return ff_vaapi_encode_init(avctx);
1238 }
1239
1240 static av_cold int vaapi_encode_h264_close(AVCodecContext *avctx)
1241 {
1242     VAAPIEncodeH264Context *priv = avctx->priv_data;
1243
1244     ff_cbs_fragment_free(&priv->current_access_unit);
1245     ff_cbs_close(&priv->cbc);
1246     av_freep(&priv->sei_identifier_string);
1247
1248     return ff_vaapi_encode_close(avctx);
1249 }
1250
1251 #define OFFSET(x) offsetof(VAAPIEncodeH264Context, x)
1252 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
1253 static const AVOption vaapi_encode_h264_options[] = {
1254     VAAPI_ENCODE_COMMON_OPTIONS,
1255     VAAPI_ENCODE_RC_OPTIONS,
1256
1257     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
1258       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, FLAGS },
1259     { "quality", "Set encode quality (trades off against speed, higher is faster)",
1260       OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, FLAGS },
1261     { "coder", "Entropy coder type",
1262       OFFSET(coder), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, FLAGS, "coder" },
1263         { "cavlc", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1264         { "cabac", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1265         { "vlc",   NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1266         { "ac",    NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, INT_MIN, INT_MAX, FLAGS, "coder" },
1267
1268     { "aud", "Include AUD",
1269       OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
1270
1271     { "sei", "Set SEI to include",
1272       OFFSET(sei), AV_OPT_TYPE_FLAGS,
1273       { .i64 = SEI_IDENTIFIER | SEI_TIMING | SEI_RECOVERY_POINT },
1274       0, INT_MAX, FLAGS, "sei" },
1275     { "identifier", "Include encoder version identifier",
1276       0, AV_OPT_TYPE_CONST, { .i64 = SEI_IDENTIFIER },
1277       INT_MIN, INT_MAX, FLAGS, "sei" },
1278     { "timing", "Include timing parameters (buffering_period and pic_timing)",
1279       0, AV_OPT_TYPE_CONST, { .i64 = SEI_TIMING },
1280       INT_MIN, INT_MAX, FLAGS, "sei" },
1281     { "recovery_point", "Include recovery points where appropriate",
1282       0, AV_OPT_TYPE_CONST, { .i64 = SEI_RECOVERY_POINT },
1283       INT_MIN, INT_MAX, FLAGS, "sei" },
1284
1285     { "profile", "Set profile (profile_idc and constraint_set*_flag)",
1286       OFFSET(profile), AV_OPT_TYPE_INT,
1287       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xffff, FLAGS, "profile" },
1288
1289 #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \
1290       { .i64 = value }, 0, 0, FLAGS, "profile"
1291     { PROFILE("constrained_baseline", FF_PROFILE_H264_CONSTRAINED_BASELINE) },
1292     { PROFILE("main",                 FF_PROFILE_H264_MAIN) },
1293     { PROFILE("high",                 FF_PROFILE_H264_HIGH) },
1294 #undef PROFILE
1295
1296     { "level", "Set level (level_idc)",
1297       OFFSET(level), AV_OPT_TYPE_INT,
1298       { .i64 = FF_LEVEL_UNKNOWN }, FF_LEVEL_UNKNOWN, 0xff, FLAGS, "level" },
1299
1300 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
1301       { .i64 = value }, 0, 0, FLAGS, "level"
1302     { LEVEL("1",   10) },
1303     { LEVEL("1.1", 11) },
1304     { LEVEL("1.2", 12) },
1305     { LEVEL("1.3", 13) },
1306     { LEVEL("2",   20) },
1307     { LEVEL("2.1", 21) },
1308     { LEVEL("2.2", 22) },
1309     { LEVEL("3",   30) },
1310     { LEVEL("3.1", 31) },
1311     { LEVEL("3.2", 32) },
1312     { LEVEL("4",   40) },
1313     { LEVEL("4.1", 41) },
1314     { LEVEL("4.2", 42) },
1315     { LEVEL("5",   50) },
1316     { LEVEL("5.1", 51) },
1317     { LEVEL("5.2", 52) },
1318     { LEVEL("6",   60) },
1319     { LEVEL("6.1", 61) },
1320     { LEVEL("6.2", 62) },
1321 #undef LEVEL
1322
1323     { NULL },
1324 };
1325
1326 static const AVCodecDefault vaapi_encode_h264_defaults[] = {
1327     { "b",              "0"   },
1328     { "bf",             "2"   },
1329     { "g",              "120" },
1330     { "i_qfactor",      "1"   },
1331     { "i_qoffset",      "0"   },
1332     { "b_qfactor",      "6/5" },
1333     { "b_qoffset",      "0"   },
1334     { "qmin",           "-1"  },
1335     { "qmax",           "-1"  },
1336     { NULL },
1337 };
1338
1339 static const AVClass vaapi_encode_h264_class = {
1340     .class_name = "h264_vaapi",
1341     .item_name  = av_default_item_name,
1342     .option     = vaapi_encode_h264_options,
1343     .version    = LIBAVUTIL_VERSION_INT,
1344 };
1345
1346 AVCodec ff_h264_vaapi_encoder = {
1347     .name           = "h264_vaapi",
1348     .long_name      = NULL_IF_CONFIG_SMALL("H.264/AVC (VAAPI)"),
1349     .type           = AVMEDIA_TYPE_VIDEO,
1350     .id             = AV_CODEC_ID_H264,
1351     .priv_data_size = sizeof(VAAPIEncodeH264Context),
1352     .init           = &vaapi_encode_h264_init,
1353     .receive_packet = &ff_vaapi_encode_receive_packet,
1354     .close          = &vaapi_encode_h264_close,
1355     .priv_class     = &vaapi_encode_h264_class,
1356     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,
1357     .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
1358     .defaults       = vaapi_encode_h264_defaults,
1359     .pix_fmts = (const enum AVPixelFormat[]) {
1360         AV_PIX_FMT_VAAPI,
1361         AV_PIX_FMT_NONE,
1362     },
1363     .hw_configs     = ff_vaapi_encode_hw_configs,
1364     .wrapper_name   = "vaapi",
1365 };