git.sesse.net Git - ffmpeg/blob - libavcodec/vaapi_encode_h265.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_hevc.h>
  23
  24 #include "libavutil/avassert.h"
  25 #include "libavutil/common.h"
  26 #include "libavutil/pixdesc.h"
  27 #include "libavutil/opt.h"
  28 #include "libavutil/mastering_display_metadata.h"
  29
  30 #include "avcodec.h"
  31 #include "cbs.h"
  32 #include "cbs_h265.h"
  33 #include "h265_profile_level.h"
  34 #include "hevc.h"
  35 #include "hevc_sei.h"
  36 #include "internal.h"
  37 #include "put_bits.h"
  38 #include "vaapi_encode.h"
  39
  40 enum {
  41     SEI_MASTERING_DISPLAY       = 0x08,
  42     SEI_CONTENT_LIGHT_LEVEL     = 0x10,
  43 };
  44
  45 typedef struct VAAPIEncodeH265Picture {
  46     int pic_order_cnt;
  47
  48     int64_t last_idr_frame;
  49
  50     int slice_nal_unit;
  51     int slice_type;
  52     int pic_type;
  53 } VAAPIEncodeH265Picture;
  54
  55 typedef struct VAAPIEncodeH265Context {
  56     VAAPIEncodeContext common;
  57
  58     // User options.
  59     int qp;
  60     int aud;
  61     int profile;
  62     int tier;
  63     int level;
  64     int sei;
  65
  66     // Derived settings.
  67     int fixed_qp_idr;
  68     int fixed_qp_p;
  69     int fixed_qp_b;
  70
  71     // Writer structures.
  72     H265RawAUD   raw_aud;
  73     H265RawVPS   raw_vps;
  74     H265RawSPS   raw_sps;
  75     H265RawPPS   raw_pps;
  76     H265RawSlice raw_slice;
  77
  78     SEIRawMasteringDisplayColourVolume sei_mastering_display;
  79     SEIRawContentLightLevelInfo        sei_content_light_level;
  80
  81     CodedBitstreamContext *cbc;
  82     CodedBitstreamFragment current_access_unit;
  83     int aud_needed;
  84     int sei_needed;
  85 } VAAPIEncodeH265Context;
  86
  87
  88 static int vaapi_encode_h265_write_access_unit(AVCodecContext *avctx,
  89                                                char *data, size_t *data_len,
  90                                                CodedBitstreamFragment *au)
  91 {
  92     VAAPIEncodeH265Context *priv = avctx->priv_data;
  93     int err;
  94
  95     err = ff_cbs_write_fragment_data(priv->cbc, au);
  96     if (err < 0) {
  97         av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
  98         return err;
  99     }
 100
 101     if (*data_len < 8 * au->data_size - au->data_bit_padding) {
 102         av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
 103                "%zu < %zu.\n", *data_len,
 104                8 * au->data_size - au->data_bit_padding);
 105         return AVERROR(ENOSPC);
 106     }
 107
 108     memcpy(data, au->data, au->data_size);
 109     *data_len = 8 * au->data_size - au->data_bit_padding;
 110
 111     return 0;
 112 }
 113
 114 static int vaapi_encode_h265_add_nal(AVCodecContext *avctx,
 115                                      CodedBitstreamFragment *au,
 116                                      void *nal_unit)
 117 {
 118     H265RawNALUnitHeader *header = nal_unit;
 119     int err;
 120
 121     err = ff_cbs_insert_unit_content(au, -1,
 122                                      header->nal_unit_type, nal_unit, NULL);
 123     if (err < 0) {
 124         av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: "
 125                "type = %d.\n", header->nal_unit_type);
 126         return err;
 127     }
 128
 129     return 0;
 130 }
 131
 132 static int vaapi_encode_h265_write_sequence_header(AVCodecContext *avctx,
 133                                                    char *data, size_t *data_len)
 134 {
 135     VAAPIEncodeH265Context *priv = avctx->priv_data;
 136     CodedBitstreamFragment   *au = &priv->current_access_unit;
 137     int err;
 138
 139     if (priv->aud_needed) {
 140         err = vaapi_encode_h265_add_nal(avctx, au, &priv->raw_aud);
 141         if (err < 0)
 142             goto fail;
 143         priv->aud_needed = 0;
 144     }
 145
 146     err = vaapi_encode_h265_add_nal(avctx, au, &priv->raw_vps);
 147     if (err < 0)
 148         goto fail;
 149
 150     err = vaapi_encode_h265_add_nal(avctx, au, &priv->raw_sps);
 151     if (err < 0)
 152         goto fail;
 153
 154     err = vaapi_encode_h265_add_nal(avctx, au, &priv->raw_pps);
 155     if (err < 0)
 156         goto fail;
 157
 158     err = vaapi_encode_h265_write_access_unit(avctx, data, data_len, au);
 159 fail:
 160     ff_cbs_fragment_reset(au);
 161     return err;
 162 }
 163
 164 static int vaapi_encode_h265_write_slice_header(AVCodecContext *avctx,
 165                                                 VAAPIEncodePicture *pic,
 166                                                 VAAPIEncodeSlice *slice,
 167                                                 char *data, size_t *data_len)
 168 {
 169     VAAPIEncodeH265Context *priv = avctx->priv_data;
 170     CodedBitstreamFragment   *au = &priv->current_access_unit;
 171     int err;
 172
 173     if (priv->aud_needed) {
 174         err = vaapi_encode_h265_add_nal(avctx, au, &priv->raw_aud);
 175         if (err < 0)
 176             goto fail;
 177         priv->aud_needed = 0;
 178     }
 179
 180     err = vaapi_encode_h265_add_nal(avctx, au, &priv->raw_slice);
 181     if (err < 0)
 182         goto fail;
 183
 184     err = vaapi_encode_h265_write_access_unit(avctx, data, data_len, au);
 185 fail:
 186     ff_cbs_fragment_reset(au);
 187     return err;
 188 }
 189
 190 static int vaapi_encode_h265_write_extra_header(AVCodecContext *avctx,
 191                                                 VAAPIEncodePicture *pic,
 192                                                 int index, int *type,
 193                                                 char *data, size_t *data_len)
 194 {
 195     VAAPIEncodeH265Context *priv = avctx->priv_data;
 196     CodedBitstreamFragment   *au = &priv->current_access_unit;
 197     int err;
 198
 199     if (priv->sei_needed) {
 200         if (priv->aud_needed) {
 201             err = vaapi_encode_h265_add_nal(avctx, au, &priv->aud);
 202             if (err < 0)
 203                 goto fail;
 204             priv->aud_needed = 0;
 205         }
 206
 207         if (priv->sei_needed & SEI_MASTERING_DISPLAY) {
 208             err = ff_cbs_sei_add_message(priv->cbc, au, 1,
 209                                          SEI_TYPE_MASTERING_DISPLAY_COLOUR_VOLUME,
 210                                          &priv->sei_mastering_display, NULL);
 211             if (err < 0)
 212                 goto fail;
 213         }
 214
 215         if (priv->sei_needed & SEI_CONTENT_LIGHT_LEVEL) {
 216             err = ff_cbs_sei_add_message(priv->cbc, au, 1,
 217                                          SEI_TYPE_CONTENT_LIGHT_LEVEL_INFO,
 218                                          &priv->sei_content_light_level, NULL);
 219             if (err < 0)
 220                 goto fail;
 221         }
 222
 223         priv->sei_needed = 0;
 224
 225         err = vaapi_encode_h265_write_access_unit(avctx, data, data_len, au);
 226         if (err < 0)
 227             goto fail;
 228
 229         ff_cbs_fragment_reset(au);
 230
 231         *type = VAEncPackedHeaderRawData;
 232         return 0;
 233     } else {
 234         return AVERROR_EOF;
 235     }
 236
 237 fail:
 238     ff_cbs_fragment_reset(au);
 239     return err;
 240 }
 241
 242 static int vaapi_encode_h265_init_sequence_params(AVCodecContext *avctx)
 243 {
 244     VAAPIEncodeContext                *ctx = avctx->priv_data;
 245     VAAPIEncodeH265Context           *priv = avctx->priv_data;
 246     H265RawVPS                        *vps = &priv->raw_vps;
 247     H265RawSPS                        *sps = &priv->raw_sps;
 248     H265RawPPS                        *pps = &priv->raw_pps;
 249     H265RawProfileTierLevel           *ptl = &vps->profile_tier_level;
 250     H265RawVUI                        *vui = &sps->vui;
 251     VAEncSequenceParameterBufferHEVC *vseq = ctx->codec_sequence_params;
 252     VAEncPictureParameterBufferHEVC  *vpic = ctx->codec_picture_params;
 253     const AVPixFmtDescriptor *desc;
 254     int chroma_format, bit_depth;
 255     int i;
 256
 257     memset(vps, 0, sizeof(*vps));
 258     memset(sps, 0, sizeof(*sps));
 259     memset(pps, 0, sizeof(*pps));
 260
 261
 262     desc = av_pix_fmt_desc_get(priv->common.input_frames->sw_format);
 263     av_assert0(desc);
 264     if (desc->nb_components == 1) {
 265         chroma_format = 0;
 266     } else {
 267         if (desc->log2_chroma_w == 1 && desc->log2_chroma_h == 1) {
 268             chroma_format = 1;
 269         } else if (desc->log2_chroma_w == 1 && desc->log2_chroma_h == 0) {
 270             chroma_format = 2;
 271         } else if (desc->log2_chroma_w == 0 && desc->log2_chroma_h == 0) {
 272             chroma_format = 3;
 273         } else {
 274             av_log(avctx, AV_LOG_ERROR, "Chroma format of input pixel format "
 275                    "%s is not supported.\n", desc->name);
 276             return AVERROR(EINVAL);
 277         }
 278     }
 279     bit_depth = desc->comp[0].depth;
 280
 281
 282     // VPS
 283
 284     vps->nal_unit_header = (H265RawNALUnitHeader) {
 285         .nal_unit_type         = HEVC_NAL_VPS,
 286         .nuh_layer_id          = 0,
 287         .nuh_temporal_id_plus1 = 1,
 288     };
 289
 290     vps->vps_video_parameter_set_id = 0;
 291
 292     vps->vps_base_layer_internal_flag  = 1;
 293     vps->vps_base_layer_available_flag = 1;
 294     vps->vps_max_layers_minus1         = 0;
 295     vps->vps_max_sub_layers_minus1     = 0;
 296     vps->vps_temporal_id_nesting_flag  = 1;
 297
 298     ptl->general_profile_space = 0;
 299     ptl->general_profile_idc   = avctx->profile;
 300     ptl->general_tier_flag     = priv->tier;
 301
 302     if (chroma_format == 1) {
 303         ptl->general_profile_compatibility_flag[1] = bit_depth ==  8;
 304         ptl->general_profile_compatibility_flag[2] = bit_depth <= 10;
 305     }
 306     ptl->general_profile_compatibility_flag[4] = 1;
 307
 308     ptl->general_progressive_source_flag    = 1;
 309     ptl->general_interlaced_source_flag     = 0;
 310     ptl->general_non_packed_constraint_flag = 1;
 311     ptl->general_frame_only_constraint_flag = 1;
 312
 313     ptl->general_max_12bit_constraint_flag = bit_depth <= 12;
 314     ptl->general_max_10bit_constraint_flag = bit_depth <= 10;
 315     ptl->general_max_8bit_constraint_flag  = bit_depth ==  8;
 316
 317     ptl->general_max_422chroma_constraint_flag  = chroma_format <= 2;
 318     ptl->general_max_420chroma_constraint_flag  = chroma_format <= 1;
 319     ptl->general_max_monochrome_constraint_flag = chroma_format == 0;
 320
 321     ptl->general_intra_constraint_flag = ctx->gop_size == 1;
 322
 323     ptl->general_lower_bit_rate_constraint_flag = 1;
 324
 325     if (avctx->level != FF_LEVEL_UNKNOWN) {
 326         ptl->general_level_idc = avctx->level;
 327     } else {
 328         const H265LevelDescriptor *level;
 329
 330         level = ff_h265_guess_level(ptl, avctx->bit_rate,
 331                                     ctx->surface_width, ctx->surface_height,
 332                                     ctx->nb_slices, ctx->tile_rows, ctx->tile_cols,
 333                                     (ctx->b_per_p > 0) + 1);
 334         if (level) {
 335             av_log(avctx, AV_LOG_VERBOSE, "Using level %s.\n", level->name);
 336             ptl->general_level_idc = level->level_idc;
 337         } else {
 338             av_log(avctx, AV_LOG_VERBOSE, "Stream will not conform to "
 339                    "any normal level; using level 8.5.\n");
 340             ptl->general_level_idc = 255;
 341             // The tier flag must be set in level 8.5.
 342             ptl->general_tier_flag = 1;
 343         }
 344     }
 345
 346     vps->vps_sub_layer_ordering_info_present_flag = 0;
 347     vps->vps_max_dec_pic_buffering_minus1[0]      = ctx->max_b_depth + 1;
 348     vps->vps_max_num_reorder_pics[0]              = ctx->max_b_depth;
 349     vps->vps_max_latency_increase_plus1[0]        = 0;
 350
 351     vps->vps_max_layer_id             = 0;
 352     vps->vps_num_layer_sets_minus1    = 0;
 353     vps->layer_id_included_flag[0][0] = 1;
 354
 355     vps->vps_timing_info_present_flag = 1;
 356     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
 357         vps->vps_num_units_in_tick  = avctx->framerate.den;
 358         vps->vps_time_scale         = avctx->framerate.num;
 359         vps->vps_poc_proportional_to_timing_flag = 1;
 360         vps->vps_num_ticks_poc_diff_one_minus1   = 0;
 361     } else {
 362         vps->vps_num_units_in_tick  = avctx->time_base.num;
 363         vps->vps_time_scale         = avctx->time_base.den;
 364         vps->vps_poc_proportional_to_timing_flag = 0;
 365     }
 366     vps->vps_num_hrd_parameters = 0;
 367
 368
 369     // SPS
 370
 371     sps->nal_unit_header = (H265RawNALUnitHeader) {
 372         .nal_unit_type         = HEVC_NAL_SPS,
 373         .nuh_layer_id          = 0,
 374         .nuh_temporal_id_plus1 = 1,
 375     };
 376
 377     sps->sps_video_parameter_set_id = vps->vps_video_parameter_set_id;
 378
 379     sps->sps_max_sub_layers_minus1    = vps->vps_max_sub_layers_minus1;
 380     sps->sps_temporal_id_nesting_flag = vps->vps_temporal_id_nesting_flag;
 381
 382     sps->profile_tier_level = vps->profile_tier_level;
 383
 384     sps->sps_seq_parameter_set_id = 0;
 385
 386     sps->chroma_format_idc          = chroma_format;
 387     sps->separate_colour_plane_flag = 0;
 388
 389     sps->pic_width_in_luma_samples  = ctx->surface_width;
 390     sps->pic_height_in_luma_samples = ctx->surface_height;
 391
 392     if (avctx->width  != ctx->surface_width ||
 393         avctx->height != ctx->surface_height) {
 394         sps->conformance_window_flag = 1;
 395         sps->conf_win_left_offset   = 0;
 396         sps->conf_win_right_offset  =
 397             (ctx->surface_width - avctx->width) >> desc->log2_chroma_w;
 398         sps->conf_win_top_offset    = 0;
 399         sps->conf_win_bottom_offset =
 400             (ctx->surface_height - avctx->height) >> desc->log2_chroma_h;
 401     } else {
 402         sps->conformance_window_flag = 0;
 403     }
 404
 405     sps->bit_depth_luma_minus8   = bit_depth - 8;
 406     sps->bit_depth_chroma_minus8 = bit_depth - 8;
 407
 408     sps->log2_max_pic_order_cnt_lsb_minus4 = 8;
 409
 410     sps->sps_sub_layer_ordering_info_present_flag =
 411         vps->vps_sub_layer_ordering_info_present_flag;
 412     for (i = 0; i <= sps->sps_max_sub_layers_minus1; i++) {
 413         sps->sps_max_dec_pic_buffering_minus1[i] =
 414             vps->vps_max_dec_pic_buffering_minus1[i];
 415         sps->sps_max_num_reorder_pics[i] =
 416             vps->vps_max_num_reorder_pics[i];
 417         sps->sps_max_latency_increase_plus1[i] =
 418             vps->vps_max_latency_increase_plus1[i];
 419     }
 420
 421     // These have to come from the capabilities of the encoder.  We have no
 422     // way to query them, so just hardcode parameters which work on the Intel
 423     // driver.
 424     // CTB size from 8x8 to 32x32.
 425     sps->log2_min_luma_coding_block_size_minus3   = 0;
 426     sps->log2_diff_max_min_luma_coding_block_size = 2;
 427     // Transform size from 4x4 to 32x32.
 428     sps->log2_min_luma_transform_block_size_minus2   = 0;
 429     sps->log2_diff_max_min_luma_transform_block_size = 3;
 430     // Full transform hierarchy allowed (2-5).
 431     sps->max_transform_hierarchy_depth_inter = 3;
 432     sps->max_transform_hierarchy_depth_intra = 3;
 433     // AMP works.
 434     sps->amp_enabled_flag = 1;
 435     // SAO and temporal MVP do not work.
 436     sps->sample_adaptive_offset_enabled_flag = 0;
 437     sps->sps_temporal_mvp_enabled_flag       = 0;
 438
 439     sps->pcm_enabled_flag = 0;
 440
 441     // STRPSs should ideally be here rather than defined individually in
 442     // each slice, but the structure isn't completely fixed so for now
 443     // don't bother.
 444     sps->num_short_term_ref_pic_sets     = 0;
 445     sps->long_term_ref_pics_present_flag = 0;
 446
 447     sps->vui_parameters_present_flag = 1;
 448
 449     if (avctx->sample_aspect_ratio.num != 0 &&
 450         avctx->sample_aspect_ratio.den != 0) {
 451         static const AVRational sar_idc[] = {
 452             {   0,  0 },
 453             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },
 454             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },
 455             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },
 456             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },
 457         };
 458         int num, den, i;
 459         av_reduce(&num, &den, avctx->sample_aspect_ratio.num,
 460                   avctx->sample_aspect_ratio.den, 65535);
 461         for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) {
 462             if (num == sar_idc[i].num &&
 463                 den == sar_idc[i].den) {
 464                 vui->aspect_ratio_idc = i;
 465                 break;
 466             }
 467         }
 468         if (i >= FF_ARRAY_ELEMS(sar_idc)) {
 469             vui->aspect_ratio_idc = 255;
 470             vui->sar_width  = num;
 471             vui->sar_height = den;
 472         }
 473         vui->aspect_ratio_info_present_flag = 1;
 474     }
 475
 476     // Unspecified video format, from table E-2.
 477     vui->video_format             = 5;
 478     vui->video_full_range_flag    =
 479         avctx->color_range == AVCOL_RANGE_JPEG;
 480     vui->colour_primaries         = avctx->color_primaries;
 481     vui->transfer_characteristics = avctx->color_trc;
 482     vui->matrix_coefficients      = avctx->colorspace;
 483     if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 484         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 485         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED)
 486         vui->colour_description_present_flag = 1;
 487     if (avctx->color_range     != AVCOL_RANGE_UNSPECIFIED ||
 488         vui->colour_description_present_flag)
 489         vui->video_signal_type_present_flag = 1;
 490
 491     if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
 492         vui->chroma_loc_info_present_flag = 1;
 493         vui->chroma_sample_loc_type_top_field    =
 494         vui->chroma_sample_loc_type_bottom_field =
 495             avctx->chroma_sample_location - 1;
 496     }
 497
 498     vui->vui_timing_info_present_flag        = 1;
 499     vui->vui_num_units_in_tick               = vps->vps_num_units_in_tick;
 500     vui->vui_time_scale                      = vps->vps_time_scale;
 501     vui->vui_poc_proportional_to_timing_flag = vps->vps_poc_proportional_to_timing_flag;
 502     vui->vui_num_ticks_poc_diff_one_minus1   = vps->vps_num_ticks_poc_diff_one_minus1;
 503     vui->vui_hrd_parameters_present_flag     = 0;
 504
 505     vui->bitstream_restriction_flag    = 1;
 506     vui->motion_vectors_over_pic_boundaries_flag = 1;
 507     vui->restricted_ref_pic_lists_flag = 1;
 508     vui->max_bytes_per_pic_denom       = 0;
 509     vui->max_bits_per_min_cu_denom     = 0;
 510     vui->log2_max_mv_length_horizontal = 15;
 511     vui->log2_max_mv_length_vertical   = 15;
 512
 513
 514     // PPS
 515
 516     pps->nal_unit_header = (H265RawNALUnitHeader) {
 517         .nal_unit_type         = HEVC_NAL_PPS,
 518         .nuh_layer_id          = 0,
 519         .nuh_temporal_id_plus1 = 1,
 520     };
 521
 522     pps->pps_pic_parameter_set_id = 0;
 523     pps->pps_seq_parameter_set_id = sps->sps_seq_parameter_set_id;
 524
 525     pps->num_ref_idx_l0_default_active_minus1 = 0;
 526     pps->num_ref_idx_l1_default_active_minus1 = 0;
 527
 528     pps->init_qp_minus26 = priv->fixed_qp_idr - 26;
 529
 530     pps->cu_qp_delta_enabled_flag = (ctx->va_rc_mode != VA_RC_CQP);
 531     pps->diff_cu_qp_delta_depth   = 0;
 532
 533     if (ctx->tile_rows && ctx->tile_cols) {
 534         int uniform_spacing;
 535
 536         pps->tiles_enabled_flag      = 1;
 537         pps->num_tile_columns_minus1 = ctx->tile_cols - 1;
 538         pps->num_tile_rows_minus1    = ctx->tile_rows - 1;
 539
 540         // Test whether the spacing provided matches the H.265 uniform
 541         // spacing, and set the flag if it does.
 542         uniform_spacing = 1;
 543         for (i = 0; i <= pps->num_tile_columns_minus1 &&
 544                     uniform_spacing; i++) {
 545             if (ctx->col_width[i] !=
 546                 (i + 1) * ctx->slice_block_cols / ctx->tile_cols -
 547                  i      * ctx->slice_block_cols / ctx->tile_cols)
 548                 uniform_spacing = 0;
 549         }
 550         for (i = 0; i <= pps->num_tile_rows_minus1 &&
 551                     uniform_spacing; i++) {
 552             if (ctx->row_height[i] !=
 553                 (i + 1) * ctx->slice_block_rows / ctx->tile_rows -
 554                  i      * ctx->slice_block_rows / ctx->tile_rows)
 555                 uniform_spacing = 0;
 556         }
 557         pps->uniform_spacing_flag = uniform_spacing;
 558
 559         for (i = 0; i <= pps->num_tile_columns_minus1; i++)
 560             pps->column_width_minus1[i] = ctx->col_width[i] - 1;
 561         for (i = 0; i <= pps->num_tile_rows_minus1; i++)
 562             pps->row_height_minus1[i]   = ctx->row_height[i] - 1;
 563
 564         pps->loop_filter_across_tiles_enabled_flag = 1;
 565     }
 566
 567     pps->pps_loop_filter_across_slices_enabled_flag = 1;
 568
 569     // Fill VAAPI parameter buffers.
 570
 571     *vseq = (VAEncSequenceParameterBufferHEVC) {
 572         .general_profile_idc = vps->profile_tier_level.general_profile_idc,
 573         .general_level_idc   = vps->profile_tier_level.general_level_idc,
 574         .general_tier_flag   = vps->profile_tier_level.general_tier_flag,
 575
 576         .intra_period     = ctx->gop_size,
 577         .intra_idr_period = ctx->gop_size,
 578         .ip_period        = ctx->b_per_p + 1,
 579         .bits_per_second  = ctx->va_bit_rate,
 580
 581         .pic_width_in_luma_samples  = sps->pic_width_in_luma_samples,
 582         .pic_height_in_luma_samples = sps->pic_height_in_luma_samples,
 583
 584         .seq_fields.bits = {
 585             .chroma_format_idc             = sps->chroma_format_idc,
 586             .separate_colour_plane_flag    = sps->separate_colour_plane_flag,
 587             .bit_depth_luma_minus8         = sps->bit_depth_luma_minus8,
 588             .bit_depth_chroma_minus8       = sps->bit_depth_chroma_minus8,
 589             .scaling_list_enabled_flag     = sps->scaling_list_enabled_flag,
 590             .strong_intra_smoothing_enabled_flag =
 591                 sps->strong_intra_smoothing_enabled_flag,
 592             .amp_enabled_flag              = sps->amp_enabled_flag,
 593             .sample_adaptive_offset_enabled_flag =
 594                 sps->sample_adaptive_offset_enabled_flag,
 595             .pcm_enabled_flag              = sps->pcm_enabled_flag,
 596             .pcm_loop_filter_disabled_flag = sps->pcm_loop_filter_disabled_flag,
 597             .sps_temporal_mvp_enabled_flag = sps->sps_temporal_mvp_enabled_flag,
 598         },
 599
 600         .log2_min_luma_coding_block_size_minus3 =
 601             sps->log2_min_luma_coding_block_size_minus3,
 602         .log2_diff_max_min_luma_coding_block_size =
 603             sps->log2_diff_max_min_luma_coding_block_size,
 604         .log2_min_transform_block_size_minus2 =
 605             sps->log2_min_luma_transform_block_size_minus2,
 606         .log2_diff_max_min_transform_block_size =
 607             sps->log2_diff_max_min_luma_transform_block_size,
 608         .max_transform_hierarchy_depth_inter =
 609             sps->max_transform_hierarchy_depth_inter,
 610         .max_transform_hierarchy_depth_intra =
 611             sps->max_transform_hierarchy_depth_intra,
 612
 613         .pcm_sample_bit_depth_luma_minus1 =
 614             sps->pcm_sample_bit_depth_luma_minus1,
 615         .pcm_sample_bit_depth_chroma_minus1 =
 616             sps->pcm_sample_bit_depth_chroma_minus1,
 617         .log2_min_pcm_luma_coding_block_size_minus3 =
 618             sps->log2_min_pcm_luma_coding_block_size_minus3,
 619         .log2_max_pcm_luma_coding_block_size_minus3 =
 620             sps->log2_min_pcm_luma_coding_block_size_minus3 +
 621             sps->log2_diff_max_min_pcm_luma_coding_block_size,
 622
 623         .vui_parameters_present_flag = 0,
 624     };
 625
 626     *vpic = (VAEncPictureParameterBufferHEVC) {
 627         .decoded_curr_pic = {
 628             .picture_id = VA_INVALID_ID,
 629             .flags      = VA_PICTURE_HEVC_INVALID,
 630         },
 631
 632         .coded_buf = VA_INVALID_ID,
 633
 634         .collocated_ref_pic_index = 0xff,
 635
 636         .last_picture = 0,
 637
 638         .pic_init_qp            = pps->init_qp_minus26 + 26,
 639         .diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth,
 640         .pps_cb_qp_offset       = pps->pps_cb_qp_offset,
 641         .pps_cr_qp_offset       = pps->pps_cr_qp_offset,
 642
 643         .num_tile_columns_minus1 = pps->num_tile_columns_minus1,
 644         .num_tile_rows_minus1    = pps->num_tile_rows_minus1,
 645
 646         .log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level_minus2,
 647         .ctu_max_bitsize_allowed          = 0,
 648
 649         .num_ref_idx_l0_default_active_minus1 =
 650             pps->num_ref_idx_l0_default_active_minus1,
 651         .num_ref_idx_l1_default_active_minus1 =
 652             pps->num_ref_idx_l1_default_active_minus1,
 653
 654         .slice_pic_parameter_set_id = pps->pps_pic_parameter_set_id,
 655
 656         .pic_fields.bits = {
 657             .sign_data_hiding_enabled_flag  = pps->sign_data_hiding_enabled_flag,
 658             .constrained_intra_pred_flag    = pps->constrained_intra_pred_flag,
 659             .transform_skip_enabled_flag    = pps->transform_skip_enabled_flag,
 660             .cu_qp_delta_enabled_flag       = pps->cu_qp_delta_enabled_flag,
 661             .weighted_pred_flag             = pps->weighted_pred_flag,
 662             .weighted_bipred_flag           = pps->weighted_bipred_flag,
 663             .transquant_bypass_enabled_flag = pps->transquant_bypass_enabled_flag,
 664             .tiles_enabled_flag             = pps->tiles_enabled_flag,
 665             .entropy_coding_sync_enabled_flag = pps->entropy_coding_sync_enabled_flag,
 666             .loop_filter_across_tiles_enabled_flag =
 667                 pps->loop_filter_across_tiles_enabled_flag,
 668             .scaling_list_data_present_flag = (sps->sps_scaling_list_data_present_flag |
 669                                                pps->pps_scaling_list_data_present_flag),
 670             .screen_content_flag            = 0,
 671             .enable_gpu_weighted_prediction = 0,
 672             .no_output_of_prior_pics_flag   = 0,
 673         },
 674     };
 675
 676     if (pps->tiles_enabled_flag) {
 677         for (i = 0; i <= vpic->num_tile_rows_minus1; i++)
 678             vpic->row_height_minus1[i]   = pps->row_height_minus1[i];
 679         for (i = 0; i <= vpic->num_tile_columns_minus1; i++)
 680             vpic->column_width_minus1[i] = pps->column_width_minus1[i];
 681     }
 682
 683     return 0;
 684 }
 685
 686 static int vaapi_encode_h265_init_picture_params(AVCodecContext *avctx,
 687                                                  VAAPIEncodePicture *pic)
 688 {
 689     VAAPIEncodeContext               *ctx = avctx->priv_data;
 690     VAAPIEncodeH265Context          *priv = avctx->priv_data;
 691     VAAPIEncodeH265Picture          *hpic = pic->priv_data;
 692     VAAPIEncodePicture              *prev = pic->prev;
 693     VAAPIEncodeH265Picture         *hprev = prev ? prev->priv_data : NULL;
 694     VAEncPictureParameterBufferHEVC *vpic = pic->codec_picture_params;
 695     int i;
 696
 697     if (pic->type == PICTURE_TYPE_IDR) {
 698         av_assert0(pic->display_order == pic->encode_order);
 699
 700         hpic->last_idr_frame = pic->display_order;
 701
 702         hpic->slice_nal_unit = HEVC_NAL_IDR_W_RADL;
 703         hpic->slice_type     = HEVC_SLICE_I;
 704         hpic->pic_type       = 0;
 705     } else {
 706         av_assert0(prev);
 707         hpic->last_idr_frame = hprev->last_idr_frame;
 708
 709         if (pic->type == PICTURE_TYPE_I) {
 710             hpic->slice_nal_unit = HEVC_NAL_CRA_NUT;
 711             hpic->slice_type     = HEVC_SLICE_I;
 712             hpic->pic_type       = 0;
 713         } else if (pic->type == PICTURE_TYPE_P) {
 714             av_assert0(pic->refs[0]);
 715             hpic->slice_nal_unit = HEVC_NAL_TRAIL_R;
 716             hpic->slice_type     = HEVC_SLICE_P;
 717             hpic->pic_type       = 1;
 718         } else {
 719             VAAPIEncodePicture *irap_ref;
 720             av_assert0(pic->refs[0] && pic->refs[1]);
 721             for (irap_ref = pic; irap_ref; irap_ref = irap_ref->refs[1]) {
 722                 if (irap_ref->type == PICTURE_TYPE_I)
 723                     break;
 724             }
 725             if (pic->b_depth == ctx->max_b_depth) {
 726                 hpic->slice_nal_unit = irap_ref ? HEVC_NAL_RASL_N
 727                                                 : HEVC_NAL_TRAIL_N;
 728             } else {
 729                 hpic->slice_nal_unit = irap_ref ? HEVC_NAL_RASL_R
 730                                                 : HEVC_NAL_TRAIL_R;
 731             }
 732             hpic->slice_type = HEVC_SLICE_B;
 733             hpic->pic_type   = 2;
 734         }
 735     }
 736     hpic->pic_order_cnt = pic->display_order - hpic->last_idr_frame;
 737
 738     if (priv->aud) {
 739         priv->aud_needed = 1;
 740         priv->raw_aud = (H265RawAUD) {
 741             .nal_unit_header = {
 742                 .nal_unit_type         = HEVC_NAL_AUD,
 743                 .nuh_layer_id          = 0,
 744                 .nuh_temporal_id_plus1 = 1,
 745             },
 746             .pic_type = hpic->pic_type,
 747         };
 748     } else {
 749         priv->aud_needed = 0;
 750     }
 751
 752     priv->sei_needed = 0;
 753
 754     // Only look for the metadata on I/IDR frame on the output. We
 755     // may force an IDR frame on the output where the medadata gets
 756     // changed on the input frame.
 757     if ((priv->sei & SEI_MASTERING_DISPLAY) &&
 758         (pic->type == PICTURE_TYPE_I || pic->type == PICTURE_TYPE_IDR)) {
 759         AVFrameSideData *sd =
 760             av_frame_get_side_data(pic->input_image,
 761                                    AV_FRAME_DATA_MASTERING_DISPLAY_METADATA);
 762
 763         if (sd) {
 764             AVMasteringDisplayMetadata *mdm =
 765                 (AVMasteringDisplayMetadata *)sd->data;
 766
 767             // SEI is needed when both the primaries and luminance are set
 768             if (mdm->has_primaries && mdm->has_luminance) {
 769                 SEIRawMasteringDisplayColourVolume *mdcv =
 770                     &priv->sei_mastering_display;
 771                 const int mapping[3] = {1, 2, 0};
 772                 const int chroma_den = 50000;
 773                 const int luma_den   = 10000;
 774
 775                 for (i = 0; i < 3; i++) {
 776                     const int j = mapping[i];
 777                     mdcv->display_primaries_x[i] =
 778                         FFMIN(lrint(chroma_den *
 779                                     av_q2d(mdm->display_primaries[j][0])),
 780                               chroma_den);
 781                     mdcv->display_primaries_y[i] =
 782                         FFMIN(lrint(chroma_den *
 783                                     av_q2d(mdm->display_primaries[j][1])),
 784                               chroma_den);
 785                 }
 786
 787                 mdcv->white_point_x =
 788                     FFMIN(lrint(chroma_den * av_q2d(mdm->white_point[0])),
 789                           chroma_den);
 790                 mdcv->white_point_y =
 791                     FFMIN(lrint(chroma_den * av_q2d(mdm->white_point[1])),
 792                           chroma_den);
 793
 794                 mdcv->max_display_mastering_luminance =
 795                     lrint(luma_den * av_q2d(mdm->max_luminance));
 796                 mdcv->min_display_mastering_luminance =
 797                     FFMIN(lrint(luma_den * av_q2d(mdm->min_luminance)),
 798                           mdcv->max_display_mastering_luminance);
 799
 800                 priv->sei_needed |= SEI_MASTERING_DISPLAY;
 801             }
 802         }
 803     }
 804
 805     if ((priv->sei & SEI_CONTENT_LIGHT_LEVEL) &&
 806         (pic->type == PICTURE_TYPE_I || pic->type == PICTURE_TYPE_IDR)) {
 807         AVFrameSideData *sd =
 808             av_frame_get_side_data(pic->input_image,
 809                                    AV_FRAME_DATA_CONTENT_LIGHT_LEVEL);
 810
 811         if (sd) {
 812             AVContentLightMetadata *clm =
 813                 (AVContentLightMetadata *)sd->data;
 814             SEIRawContentLightLevelInfo *clli =
 815                 &priv->sei_content_light_level;
 816
 817             clli->max_content_light_level     = FFMIN(clm->MaxCLL,  65535);
 818             clli->max_pic_average_light_level = FFMIN(clm->MaxFALL, 65535);
 819
 820             priv->sei_needed |= SEI_CONTENT_LIGHT_LEVEL;
 821         }
 822     }
 823
 824     vpic->decoded_curr_pic = (VAPictureHEVC) {
 825         .picture_id    = pic->recon_surface,
 826         .pic_order_cnt = hpic->pic_order_cnt,
 827         .flags         = 0,
 828     };
 829
 830     for (i = 0; i < pic->nb_refs; i++) {
 831         VAAPIEncodePicture      *ref = pic->refs[i];
 832         VAAPIEncodeH265Picture *href;
 833
 834         av_assert0(ref && ref->encode_order < pic->encode_order);
 835         href = ref->priv_data;
 836
 837         vpic->reference_frames[i] = (VAPictureHEVC) {
 838             .picture_id    = ref->recon_surface,
 839             .pic_order_cnt = href->pic_order_cnt,
 840             .flags = (ref->display_order < pic->display_order ?
 841                       VA_PICTURE_HEVC_RPS_ST_CURR_BEFORE : 0) |
 842                      (ref->display_order > pic->display_order ?
 843                       VA_PICTURE_HEVC_RPS_ST_CURR_AFTER  : 0),
 844         };
 845     }
 846     for (; i < FF_ARRAY_ELEMS(vpic->reference_frames); i++) {
 847         vpic->reference_frames[i] = (VAPictureHEVC) {
 848             .picture_id = VA_INVALID_ID,
 849             .flags      = VA_PICTURE_HEVC_INVALID,
 850         };
 851     }
 852
 853     vpic->coded_buf = pic->output_buffer;
 854
 855     vpic->nal_unit_type = hpic->slice_nal_unit;
 856
 857     switch (pic->type) {
 858     case PICTURE_TYPE_IDR:
 859         vpic->pic_fields.bits.idr_pic_flag       = 1;
 860         vpic->pic_fields.bits.coding_type        = 1;
 861         vpic->pic_fields.bits.reference_pic_flag = 1;
 862         break;
 863     case PICTURE_TYPE_I:
 864         vpic->pic_fields.bits.idr_pic_flag       = 0;
 865         vpic->pic_fields.bits.coding_type        = 1;
 866         vpic->pic_fields.bits.reference_pic_flag = 1;
 867         break;
 868     case PICTURE_TYPE_P:
 869         vpic->pic_fields.bits.idr_pic_flag       = 0;
 870         vpic->pic_fields.bits.coding_type        = 2;
 871         vpic->pic_fields.bits.reference_pic_flag = 1;
 872         break;
 873     case PICTURE_TYPE_B:
 874         vpic->pic_fields.bits.idr_pic_flag       = 0;
 875         vpic->pic_fields.bits.coding_type        = 3;
 876         vpic->pic_fields.bits.reference_pic_flag = 0;
 877         break;
 878     default:
 879         av_assert0(0 && "invalid picture type");
 880     }
 881
 882     return 0;
 883 }
 884
 885 static int vaapi_encode_h265_init_slice_params(AVCodecContext *avctx,
 886                                                VAAPIEncodePicture *pic,
 887                                                VAAPIEncodeSlice *slice)
 888 {
 889     VAAPIEncodeH265Context           *priv = avctx->priv_data;
 890     VAAPIEncodeH265Picture           *hpic = pic->priv_data;
 891     const H265RawSPS                  *sps = &priv->raw_sps;
 892     const H265RawPPS                  *pps = &priv->raw_pps;
 893     H265RawSliceHeader                 *sh = &priv->raw_slice.header;
 894     VAEncPictureParameterBufferHEVC  *vpic = pic->codec_picture_params;
 895     VAEncSliceParameterBufferHEVC  *vslice = slice->codec_slice_params;
 896     int i;
 897
 898     sh->nal_unit_header = (H265RawNALUnitHeader) {
 899         .nal_unit_type         = hpic->slice_nal_unit,
 900         .nuh_layer_id          = 0,
 901         .nuh_temporal_id_plus1 = 1,
 902     };
 903
 904     sh->slice_pic_parameter_set_id      = pps->pps_pic_parameter_set_id;
 905
 906     sh->first_slice_segment_in_pic_flag = slice->index == 0;
 907     sh->slice_segment_address           = slice->block_start;
 908
 909     sh->slice_type = hpic->slice_type;
 910
 911     sh->slice_pic_order_cnt_lsb = hpic->pic_order_cnt &
 912         (1 << (sps->log2_max_pic_order_cnt_lsb_minus4 + 4)) - 1;
 913
 914     if (pic->type != PICTURE_TYPE_IDR) {
 915         H265RawSTRefPicSet *rps;
 916         const VAAPIEncodeH265Picture *strp;
 917         int rps_poc[MAX_DPB_SIZE];
 918         int rps_used[MAX_DPB_SIZE];
 919         int i, j, poc, rps_pics;
 920
 921         sh->short_term_ref_pic_set_sps_flag = 0;
 922
 923         rps = &sh->short_term_ref_pic_set;
 924         memset(rps, 0, sizeof(*rps));
 925
 926         rps_pics = 0;
 927         for (i = 0; i < pic->nb_refs; i++) {
 928             strp = pic->refs[i]->priv_data;
 929             rps_poc[rps_pics]  = strp->pic_order_cnt;
 930             rps_used[rps_pics] = 1;
 931             ++rps_pics;
 932         }
 933         for (i = 0; i < pic->nb_dpb_pics; i++) {
 934             if (pic->dpb[i] == pic)
 935                 continue;
 936             for (j = 0; j < pic->nb_refs; j++) {
 937                 if (pic->dpb[i] == pic->refs[j])
 938                     break;
 939             }
 940             if (j < pic->nb_refs)
 941                 continue;
 942             strp = pic->dpb[i]->priv_data;
 943             rps_poc[rps_pics]  = strp->pic_order_cnt;
 944             rps_used[rps_pics] = 0;
 945             ++rps_pics;
 946         }
 947
 948         for (i = 1; i < rps_pics; i++) {
 949             for (j = i; j > 0; j--) {
 950                 if (rps_poc[j] > rps_poc[j - 1])
 951                     break;
 952                 av_assert0(rps_poc[j] != rps_poc[j - 1]);
 953                 FFSWAP(int, rps_poc[j],  rps_poc[j - 1]);
 954                 FFSWAP(int, rps_used[j], rps_used[j - 1]);
 955             }
 956         }
 957
 958         av_log(avctx, AV_LOG_DEBUG, "RPS for POC %d:",
 959                hpic->pic_order_cnt);
 960         for (i = 0; i < rps_pics; i++) {
 961             av_log(avctx, AV_LOG_DEBUG, " (%d,%d)",
 962                    rps_poc[i], rps_used[i]);
 963         }
 964         av_log(avctx, AV_LOG_DEBUG, "\n");
 965
 966         for (i = 0; i < rps_pics; i++) {
 967             av_assert0(rps_poc[i] != hpic->pic_order_cnt);
 968             if (rps_poc[i] > hpic->pic_order_cnt)
 969                 break;
 970         }
 971
 972         rps->num_negative_pics = i;
 973         poc = hpic->pic_order_cnt;
 974         for (j = i - 1; j >= 0; j--) {
 975             rps->delta_poc_s0_minus1[i - 1 - j] = poc - rps_poc[j] - 1;
 976             rps->used_by_curr_pic_s0_flag[i - 1 - j] = rps_used[j];
 977             poc = rps_poc[j];
 978         }
 979
 980         rps->num_positive_pics = rps_pics - i;
 981         poc = hpic->pic_order_cnt;
 982         for (j = i; j < rps_pics; j++) {
 983             rps->delta_poc_s1_minus1[j - i] = rps_poc[j] - poc - 1;
 984             rps->used_by_curr_pic_s1_flag[j - i] = rps_used[j];
 985             poc = rps_poc[j];
 986         }
 987
 988         sh->num_long_term_sps  = 0;
 989         sh->num_long_term_pics = 0;
 990
 991         sh->slice_temporal_mvp_enabled_flag =
 992             sps->sps_temporal_mvp_enabled_flag;
 993         if (sh->slice_temporal_mvp_enabled_flag) {
 994             sh->collocated_from_l0_flag = sh->slice_type == HEVC_SLICE_B;
 995             sh->collocated_ref_idx      = 0;
 996         }
 997
 998         sh->num_ref_idx_active_override_flag = 0;
 999         sh->num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1;
1000         sh->num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1;
1001     }
1002
1003     sh->slice_sao_luma_flag = sh->slice_sao_chroma_flag =
1004         sps->sample_adaptive_offset_enabled_flag;
1005
1006     if (pic->type == PICTURE_TYPE_B)
1007         sh->slice_qp_delta = priv->fixed_qp_b - (pps->init_qp_minus26 + 26);
1008     else if (pic->type == PICTURE_TYPE_P)
1009         sh->slice_qp_delta = priv->fixed_qp_p - (pps->init_qp_minus26 + 26);
1010     else
1011         sh->slice_qp_delta = priv->fixed_qp_idr - (pps->init_qp_minus26 + 26);
1012
1013
1014     *vslice = (VAEncSliceParameterBufferHEVC) {
1015         .slice_segment_address = sh->slice_segment_address,
1016         .num_ctu_in_slice      = slice->block_size,
1017
1018         .slice_type                 = sh->slice_type,
1019         .slice_pic_parameter_set_id = sh->slice_pic_parameter_set_id,
1020
1021         .num_ref_idx_l0_active_minus1 = sh->num_ref_idx_l0_active_minus1,
1022         .num_ref_idx_l1_active_minus1 = sh->num_ref_idx_l1_active_minus1,
1023
1024         .luma_log2_weight_denom         = sh->luma_log2_weight_denom,
1025         .delta_chroma_log2_weight_denom = sh->delta_chroma_log2_weight_denom,
1026
1027         .max_num_merge_cand = 5 - sh->five_minus_max_num_merge_cand,
1028
1029         .slice_qp_delta     = sh->slice_qp_delta,
1030         .slice_cb_qp_offset = sh->slice_cb_qp_offset,
1031         .slice_cr_qp_offset = sh->slice_cr_qp_offset,
1032
1033         .slice_beta_offset_div2 = sh->slice_beta_offset_div2,
1034         .slice_tc_offset_div2   = sh->slice_tc_offset_div2,
1035
1036         .slice_fields.bits = {
1037             .last_slice_of_pic_flag       = slice->index == pic->nb_slices - 1,
1038             .dependent_slice_segment_flag = sh->dependent_slice_segment_flag,
1039             .colour_plane_id              = sh->colour_plane_id,
1040             .slice_temporal_mvp_enabled_flag =
1041                 sh->slice_temporal_mvp_enabled_flag,
1042             .slice_sao_luma_flag          = sh->slice_sao_luma_flag,
1043             .slice_sao_chroma_flag        = sh->slice_sao_chroma_flag,
1044             .num_ref_idx_active_override_flag =
1045                 sh->num_ref_idx_active_override_flag,
1046             .mvd_l1_zero_flag             = sh->mvd_l1_zero_flag,
1047             .cabac_init_flag              = sh->cabac_init_flag,
1048             .slice_deblocking_filter_disabled_flag =
1049                 sh->slice_deblocking_filter_disabled_flag,
1050             .slice_loop_filter_across_slices_enabled_flag =
1051                 sh->slice_loop_filter_across_slices_enabled_flag,
1052             .collocated_from_l0_flag      = sh->collocated_from_l0_flag,
1053         },
1054     };
1055
1056     for (i = 0; i < FF_ARRAY_ELEMS(vslice->ref_pic_list0); i++) {
1057         vslice->ref_pic_list0[i].picture_id = VA_INVALID_ID;
1058         vslice->ref_pic_list0[i].flags      = VA_PICTURE_HEVC_INVALID;
1059         vslice->ref_pic_list1[i].picture_id = VA_INVALID_ID;
1060         vslice->ref_pic_list1[i].flags      = VA_PICTURE_HEVC_INVALID;
1061     }
1062
1063     av_assert0(pic->nb_refs <= 2);
1064     if (pic->nb_refs >= 1) {
1065         // Backward reference for P- or B-frame.
1066         av_assert0(pic->type == PICTURE_TYPE_P ||
1067                    pic->type == PICTURE_TYPE_B);
1068         vslice->ref_pic_list0[0] = vpic->reference_frames[0];
1069     }
1070     if (pic->nb_refs >= 2) {
1071         // Forward reference for B-frame.
1072         av_assert0(pic->type == PICTURE_TYPE_B);
1073         vslice->ref_pic_list1[0] = vpic->reference_frames[1];
1074     }
1075
1076     return 0;
1077 }
1078
1079 static av_cold int vaapi_encode_h265_configure(AVCodecContext *avctx)
1080 {
1081     VAAPIEncodeContext      *ctx = avctx->priv_data;
1082     VAAPIEncodeH265Context *priv = avctx->priv_data;
1083     int err;
1084
1085     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_HEVC, avctx);
1086     if (err < 0)
1087         return err;
1088
1089     if (ctx->va_rc_mode == VA_RC_CQP) {
1090         // Note that VAAPI only supports positive QP values - the range is
1091         // therefore always bounded below by 1, even in 10-bit mode where
1092         // it should go down to -12.
1093
1094         priv->fixed_qp_p = av_clip(ctx->rc_quality, 1, 51);
1095         if (avctx->i_quant_factor > 0.0)
1096             priv->fixed_qp_idr =
1097                 av_clip((avctx->i_quant_factor * priv->fixed_qp_p +
1098                          avctx->i_quant_offset) + 0.5, 1, 51);
1099         else
1100             priv->fixed_qp_idr = priv->fixed_qp_p;
1101         if (avctx->b_quant_factor > 0.0)
1102             priv->fixed_qp_b =
1103                 av_clip((avctx->b_quant_factor * priv->fixed_qp_p +
1104                          avctx->b_quant_offset) + 0.5, 1, 51);
1105         else
1106             priv->fixed_qp_b = priv->fixed_qp_p;
1107
1108         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
1109                "%d / %d / %d for IDR- / P- / B-frames.\n",
1110                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
1111
1112     } else {
1113         // These still need to be set for init_qp/slice_qp_delta.
1114         priv->fixed_qp_idr = 30;
1115         priv->fixed_qp_p   = 30;
1116         priv->fixed_qp_b   = 30;
1117     }
1118
1119     ctx->roi_quant_range = 51 + 6 * (ctx->profile->depth - 8);
1120
1121     return 0;
1122 }
1123
1124 static const VAAPIEncodeProfile vaapi_encode_h265_profiles[] = {
1125     { FF_PROFILE_HEVC_MAIN,     8, 3, 1, 1, VAProfileHEVCMain       },
1126     { FF_PROFILE_HEVC_REXT,     8, 3, 1, 1, VAProfileHEVCMain       },
1127 #if VA_CHECK_VERSION(0, 37, 0)
1128     { FF_PROFILE_HEVC_MAIN_10, 10, 3, 1, 1, VAProfileHEVCMain10     },
1129     { FF_PROFILE_HEVC_REXT,    10, 3, 1, 1, VAProfileHEVCMain10     },
1130 #endif
1131 #if VA_CHECK_VERSION(1, 2, 0)
1132     { FF_PROFILE_HEVC_REXT,     8, 3, 1, 0, VAProfileHEVCMain422_10 },
1133     { FF_PROFILE_HEVC_REXT,    10, 3, 1, 0, VAProfileHEVCMain422_10 },
1134 #endif
1135     { FF_PROFILE_UNKNOWN }
1136 };
1137
1138 static const VAAPIEncodeType vaapi_encode_type_h265 = {
1139     .profiles              = vaapi_encode_h265_profiles,
1140
1141     .flags                 = FLAG_SLICE_CONTROL |
1142                              FLAG_B_PICTURES |
1143                              FLAG_B_PICTURE_REFERENCES |
1144                              FLAG_NON_IDR_KEY_PICTURES,
1145
1146     .default_quality       = 25,
1147
1148     .configure             = &vaapi_encode_h265_configure,
1149
1150     .picture_priv_data_size = sizeof(VAAPIEncodeH265Picture),
1151
1152     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferHEVC),
1153     .init_sequence_params  = &vaapi_encode_h265_init_sequence_params,
1154
1155     .picture_params_size   = sizeof(VAEncPictureParameterBufferHEVC),
1156     .init_picture_params   = &vaapi_encode_h265_init_picture_params,
1157
1158     .slice_params_size     = sizeof(VAEncSliceParameterBufferHEVC),
1159     .init_slice_params     = &vaapi_encode_h265_init_slice_params,
1160
1161     .sequence_header_type  = VAEncPackedHeaderSequence,
1162     .write_sequence_header = &vaapi_encode_h265_write_sequence_header,
1163
1164     .slice_header_type     = VAEncPackedHeaderHEVC_Slice,
1165     .write_slice_header    = &vaapi_encode_h265_write_slice_header,
1166
1167     .write_extra_header    = &vaapi_encode_h265_write_extra_header,
1168 };
1169
1170 static av_cold int vaapi_encode_h265_init(AVCodecContext *avctx)
1171 {
1172     VAAPIEncodeContext      *ctx = avctx->priv_data;
1173     VAAPIEncodeH265Context *priv = avctx->priv_data;
1174
1175     ctx->codec = &vaapi_encode_type_h265;
1176
1177     if (avctx->profile == FF_PROFILE_UNKNOWN)
1178         avctx->profile = priv->profile;
1179     if (avctx->level == FF_LEVEL_UNKNOWN)
1180         avctx->level = priv->level;
1181
1182     if (avctx->level != FF_LEVEL_UNKNOWN && avctx->level & ~0xff) {
1183         av_log(avctx, AV_LOG_ERROR, "Invalid level %d: must fit "
1184                "in 8-bit unsigned integer.\n", avctx->level);
1185         return AVERROR(EINVAL);
1186     }
1187
1188     ctx->desired_packed_headers =
1189         VA_ENC_PACKED_HEADER_SEQUENCE | // VPS, SPS and PPS.
1190         VA_ENC_PACKED_HEADER_SLICE    | // Slice headers.
1191         VA_ENC_PACKED_HEADER_MISC;      // SEI
1192
1193     ctx->surface_width  = FFALIGN(avctx->width,  16);
1194     ctx->surface_height = FFALIGN(avctx->height, 16);
1195
1196     // CTU size is currently hard-coded to 32.
1197     ctx->slice_block_width = ctx->slice_block_height = 32;
1198
1199     if (priv->qp > 0)
1200         ctx->explicit_qp = priv->qp;
1201
1202     return ff_vaapi_encode_init(avctx);
1203 }
1204
1205 static av_cold int vaapi_encode_h265_close(AVCodecContext *avctx)
1206 {
1207     VAAPIEncodeH265Context *priv = avctx->priv_data;
1208
1209     ff_cbs_fragment_free(&priv->current_access_unit);
1210     ff_cbs_close(&priv->cbc);
1211
1212     return ff_vaapi_encode_close(avctx);
1213 }
1214
1215 #define OFFSET(x) offsetof(VAAPIEncodeH265Context, x)
1216 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
1217 static const AVOption vaapi_encode_h265_options[] = {
1218     VAAPI_ENCODE_COMMON_OPTIONS,
1219     VAAPI_ENCODE_RC_OPTIONS,
1220
1221     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
1222       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, FLAGS },
1223
1224     { "aud", "Include AUD",
1225       OFFSET(aud), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
1226
1227     { "profile", "Set profile (general_profile_idc)",
1228       OFFSET(profile), AV_OPT_TYPE_INT,
1229       { .i64 = FF_PROFILE_UNKNOWN }, FF_PROFILE_UNKNOWN, 0xff, FLAGS, "profile" },
1230
1231 #define PROFILE(name, value)  name, NULL, 0, AV_OPT_TYPE_CONST, \
1232       { .i64 = value }, 0, 0, FLAGS, "profile"
1233     { PROFILE("main",               FF_PROFILE_HEVC_MAIN) },
1234     { PROFILE("main10",             FF_PROFILE_HEVC_MAIN_10) },
1235     { PROFILE("rext",               FF_PROFILE_HEVC_REXT) },
1236 #undef PROFILE
1237
1238     { "tier", "Set tier (general_tier_flag)",
1239       OFFSET(tier), AV_OPT_TYPE_INT,
1240       { .i64 = 0 }, 0, 1, FLAGS, "tier" },
1241     { "main", NULL, 0, AV_OPT_TYPE_CONST,
1242       { .i64 = 0 }, 0, 0, FLAGS, "tier" },
1243     { "high", NULL, 0, AV_OPT_TYPE_CONST,
1244       { .i64 = 1 }, 0, 0, FLAGS, "tier" },
1245
1246     { "level", "Set level (general_level_idc)",
1247       OFFSET(level), AV_OPT_TYPE_INT,
1248       { .i64 = FF_LEVEL_UNKNOWN }, FF_LEVEL_UNKNOWN, 0xff, FLAGS, "level" },
1249
1250 #define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \
1251       { .i64 = value }, 0, 0, FLAGS, "level"
1252     { LEVEL("1",    30) },
1253     { LEVEL("2",    60) },
1254     { LEVEL("2.1",  63) },
1255     { LEVEL("3",    90) },
1256     { LEVEL("3.1",  93) },
1257     { LEVEL("4",   120) },
1258     { LEVEL("4.1", 123) },
1259     { LEVEL("5",   150) },
1260     { LEVEL("5.1", 153) },
1261     { LEVEL("5.2", 156) },
1262     { LEVEL("6",   180) },
1263     { LEVEL("6.1", 183) },
1264     { LEVEL("6.2", 186) },
1265 #undef LEVEL
1266
1267     { "sei", "Set SEI to include",
1268       OFFSET(sei), AV_OPT_TYPE_FLAGS,
1269       { .i64 = SEI_MASTERING_DISPLAY | SEI_CONTENT_LIGHT_LEVEL },
1270       0, INT_MAX, FLAGS, "sei" },
1271     { "hdr",
1272       "Include HDR metadata for mastering display colour volume "
1273       "and content light level information",
1274       0, AV_OPT_TYPE_CONST,
1275       { .i64 = SEI_MASTERING_DISPLAY | SEI_CONTENT_LIGHT_LEVEL },
1276       INT_MIN, INT_MAX, FLAGS, "sei" },
1277
1278     { "tiles", "Tile columns x rows",
1279       OFFSET(common.tile_cols), AV_OPT_TYPE_IMAGE_SIZE,
1280       { .str = NULL }, 0, 0, FLAGS },
1281
1282     { NULL },
1283 };
1284
1285 static const AVCodecDefault vaapi_encode_h265_defaults[] = {
1286     { "b",              "0"   },
1287     { "bf",             "2"   },
1288     { "g",              "120" },
1289     { "i_qfactor",      "1"   },
1290     { "i_qoffset",      "0"   },
1291     { "b_qfactor",      "6/5" },
1292     { "b_qoffset",      "0"   },
1293     { "qmin",           "-1"  },
1294     { "qmax",           "-1"  },
1295     { NULL },
1296 };
1297
1298 static const AVClass vaapi_encode_h265_class = {
1299     .class_name = "h265_vaapi",
1300     .item_name  = av_default_item_name,
1301     .option     = vaapi_encode_h265_options,
1302     .version    = LIBAVUTIL_VERSION_INT,
1303 };
1304
1305 const AVCodec ff_hevc_vaapi_encoder = {
1306     .name           = "hevc_vaapi",
1307     .long_name      = NULL_IF_CONFIG_SMALL("H.265/HEVC (VAAPI)"),
1308     .type           = AVMEDIA_TYPE_VIDEO,
1309     .id             = AV_CODEC_ID_HEVC,
1310     .priv_data_size = sizeof(VAAPIEncodeH265Context),
1311     .init           = &vaapi_encode_h265_init,
1312     .receive_packet = &ff_vaapi_encode_receive_packet,
1313     .close          = &vaapi_encode_h265_close,
1314     .priv_class     = &vaapi_encode_h265_class,
1315     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE |
1316                       AV_CODEC_CAP_DR1,
1317     .caps_internal  = FF_CODEC_CAP_INIT_CLEANUP,
1318     .defaults       = vaapi_encode_h265_defaults,
1319     .pix_fmts = (const enum AVPixelFormat[]) {
1320         AV_PIX_FMT_VAAPI,
1321         AV_PIX_FMT_NONE,
1322     },
1323     .hw_configs     = ff_vaapi_encode_hw_configs,
1324     .wrapper_name   = "vaapi",
1325 };