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/opt.h"
  27
  28 #include "avcodec.h"
  29 #include "cbs.h"
  30 #include "cbs_h265.h"
  31 #include "hevc.h"
  32 #include "internal.h"
  33 #include "put_bits.h"
  34 #include "vaapi_encode.h"
  35
  36
  37 typedef struct VAAPIEncodeH265Context {
  38     unsigned int ctu_width;
  39     unsigned int ctu_height;
  40
  41     int fixed_qp_idr;
  42     int fixed_qp_p;
  43     int fixed_qp_b;
  44
  45     H265RawAUD aud;
  46     H265RawVPS vps;
  47     H265RawSPS sps;
  48     H265RawPPS pps;
  49     H265RawSlice slice;
  50
  51     int64_t last_idr_frame;
  52     int pic_order_cnt;
  53
  54     int slice_nal_unit;
  55     int slice_type;
  56     int pic_type;
  57
  58     CodedBitstreamContext *cbc;
  59     CodedBitstreamFragment current_access_unit;
  60     int aud_needed;
  61 } VAAPIEncodeH265Context;
  62
  63 typedef struct VAAPIEncodeH265Options {
  64     int qp;
  65     int aud;
  66 } VAAPIEncodeH265Options;
  67
  68
  69 static int vaapi_encode_h265_write_access_unit(AVCodecContext *avctx,
  70                                                char *data, size_t *data_len,
  71                                                CodedBitstreamFragment *au)
  72 {
  73     VAAPIEncodeContext      *ctx = avctx->priv_data;
  74     VAAPIEncodeH265Context *priv = ctx->priv_data;
  75     int err;
  76
  77     err = ff_cbs_write_fragment_data(priv->cbc, au);
  78     if (err < 0) {
  79         av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");
  80         return err;
  81     }
  82
  83     if (*data_len < 8 * au->data_size - au->data_bit_padding) {
  84         av_log(avctx, AV_LOG_ERROR, "Access unit too large: "
  85                "%zu < %zu.\n", *data_len,
  86                8 * au->data_size - au->data_bit_padding);
  87         return AVERROR(ENOSPC);
  88     }
  89
  90     memcpy(data, au->data, au->data_size);
  91     *data_len = 8 * au->data_size - au->data_bit_padding;
  92
  93     return 0;
  94 }
  95
  96 static int vaapi_encode_h265_add_nal(AVCodecContext *avctx,
  97                                      CodedBitstreamFragment *au,
  98                                      void *nal_unit)
  99 {
 100     VAAPIEncodeContext      *ctx = avctx->priv_data;
 101     VAAPIEncodeH265Context *priv = ctx->priv_data;
 102     H265RawNALUnitHeader *header = nal_unit;
 103     int err;
 104
 105     err = ff_cbs_insert_unit_content(priv->cbc, au, -1,
 106                                      header->nal_unit_type, nal_unit);
 107     if (err < 0) {
 108         av_log(avctx, AV_LOG_ERROR, "Failed to add NAL unit: "
 109                "type = %d.\n", header->nal_unit_type);
 110         return err;
 111     }
 112
 113     return 0;
 114 }
 115
 116 static int vaapi_encode_h265_write_sequence_header(AVCodecContext *avctx,
 117                                                    char *data, size_t *data_len)
 118 {
 119     VAAPIEncodeContext      *ctx = avctx->priv_data;
 120     VAAPIEncodeH265Context *priv = ctx->priv_data;
 121     CodedBitstreamFragment   *au = &priv->current_access_unit;
 122     int err;
 123
 124     if (priv->aud_needed) {
 125         err = vaapi_encode_h265_add_nal(avctx, au, &priv->aud);
 126         if (err < 0)
 127             goto fail;
 128         priv->aud_needed = 0;
 129     }
 130
 131     err = vaapi_encode_h265_add_nal(avctx, au, &priv->vps);
 132     if (err < 0)
 133         goto fail;
 134
 135     err = vaapi_encode_h265_add_nal(avctx, au, &priv->sps);
 136     if (err < 0)
 137         goto fail;
 138
 139     err = vaapi_encode_h265_add_nal(avctx, au, &priv->pps);
 140     if (err < 0)
 141         goto fail;
 142
 143     err = vaapi_encode_h265_write_access_unit(avctx, data, data_len, au);
 144 fail:
 145     ff_cbs_fragment_uninit(priv->cbc, au);
 146     return err;
 147 }
 148
 149 static int vaapi_encode_h265_write_slice_header(AVCodecContext *avctx,
 150                                                 VAAPIEncodePicture *pic,
 151                                                 VAAPIEncodeSlice *slice,
 152                                                 char *data, size_t *data_len)
 153 {
 154     VAAPIEncodeContext      *ctx = avctx->priv_data;
 155     VAAPIEncodeH265Context *priv = ctx->priv_data;
 156     CodedBitstreamFragment   *au = &priv->current_access_unit;
 157     int err;
 158
 159     if (priv->aud_needed) {
 160         err = vaapi_encode_h265_add_nal(avctx, au, &priv->aud);
 161         if (err < 0)
 162             goto fail;
 163         priv->aud_needed = 0;
 164     }
 165
 166     err = vaapi_encode_h265_add_nal(avctx, au, &priv->slice);
 167     if (err < 0)
 168         goto fail;
 169
 170     err = vaapi_encode_h265_write_access_unit(avctx, data, data_len, au);
 171 fail:
 172     ff_cbs_fragment_uninit(priv->cbc, au);
 173     return err;
 174 }
 175
 176 static int vaapi_encode_h265_init_sequence_params(AVCodecContext *avctx)
 177 {
 178     VAAPIEncodeContext                *ctx = avctx->priv_data;
 179     VAAPIEncodeH265Context           *priv = ctx->priv_data;
 180     H265RawVPS                        *vps = &priv->vps;
 181     H265RawSPS                        *sps = &priv->sps;
 182     H265RawPPS                        *pps = &priv->pps;
 183     H265RawVUI                        *vui = &sps->vui;
 184     VAEncSequenceParameterBufferHEVC *vseq = ctx->codec_sequence_params;
 185     VAEncPictureParameterBufferHEVC  *vpic = ctx->codec_picture_params;
 186     int i;
 187
 188     memset(&priv->current_access_unit, 0,
 189            sizeof(priv->current_access_unit));
 190
 191     memset(vps, 0, sizeof(*vps));
 192     memset(sps, 0, sizeof(*sps));
 193     memset(pps, 0, sizeof(*pps));
 194
 195
 196     // VPS
 197
 198     vps->nal_unit_header = (H265RawNALUnitHeader) {
 199         .nal_unit_type         = HEVC_NAL_VPS,
 200         .nuh_layer_id          = 0,
 201         .nuh_temporal_id_plus1 = 1,
 202     };
 203
 204     vps->vps_video_parameter_set_id = 0;
 205
 206     vps->vps_base_layer_internal_flag  = 1;
 207     vps->vps_base_layer_available_flag = 1;
 208     vps->vps_max_layers_minus1         = 0;
 209     vps->vps_max_sub_layers_minus1     = 0;
 210     vps->vps_temporal_id_nesting_flag  = 1;
 211
 212     vps->profile_tier_level = (H265RawProfileTierLevel) {
 213         .general_profile_space = 0,
 214         .general_profile_idc   = avctx->profile,
 215         .general_tier_flag     = 0,
 216
 217         .general_progressive_source_flag    = 1,
 218         .general_interlaced_source_flag     = 0,
 219         .general_non_packed_constraint_flag = 1,
 220         .general_frame_only_constraint_flag = 1,
 221
 222         .general_level_idc     = avctx->level,
 223     };
 224     vps->profile_tier_level.general_profile_compatibility_flag[avctx->profile & 31] = 1;
 225
 226     vps->vps_sub_layer_ordering_info_present_flag = 0;
 227     vps->vps_max_dec_pic_buffering_minus1[0]      = (ctx->b_per_p > 0) + 1;
 228     vps->vps_max_num_reorder_pics[0]              = (ctx->b_per_p > 0);
 229     vps->vps_max_latency_increase_plus1[0]        = 0;
 230
 231     vps->vps_max_layer_id             = 0;
 232     vps->vps_num_layer_sets_minus1    = 0;
 233     vps->layer_id_included_flag[0][0] = 1;
 234
 235     vps->vps_timing_info_present_flag = 1;
 236     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
 237         vps->vps_num_units_in_tick  = avctx->framerate.den;
 238         vps->vps_time_scale         = avctx->framerate.num;
 239         vps->vps_poc_proportional_to_timing_flag = 1;
 240         vps->vps_num_ticks_poc_diff_one_minus1   = 0;
 241     } else {
 242         vps->vps_num_units_in_tick  = avctx->time_base.num;
 243         vps->vps_time_scale         = avctx->time_base.den;
 244         vps->vps_poc_proportional_to_timing_flag = 0;
 245     }
 246     vps->vps_num_hrd_parameters = 0;
 247
 248
 249     // SPS
 250
 251     sps->nal_unit_header = (H265RawNALUnitHeader) {
 252         .nal_unit_type         = HEVC_NAL_SPS,
 253         .nuh_layer_id          = 0,
 254         .nuh_temporal_id_plus1 = 1,
 255     };
 256
 257     sps->sps_video_parameter_set_id = vps->vps_video_parameter_set_id;
 258
 259     sps->sps_max_sub_layers_minus1    = vps->vps_max_sub_layers_minus1;
 260     sps->sps_temporal_id_nesting_flag = vps->vps_temporal_id_nesting_flag;
 261
 262     sps->profile_tier_level = vps->profile_tier_level;
 263
 264     sps->sps_seq_parameter_set_id = 0;
 265
 266     sps->chroma_format_idc          = 1; // YUV 4:2:0.
 267     sps->separate_colour_plane_flag = 0;
 268
 269     sps->pic_width_in_luma_samples  = ctx->surface_width;
 270     sps->pic_height_in_luma_samples = ctx->surface_height;
 271
 272     if (avctx->width  != ctx->surface_width ||
 273         avctx->height != ctx->surface_height) {
 274         sps->conformance_window_flag = 1;
 275         sps->conf_win_left_offset   = 0;
 276         sps->conf_win_right_offset  =
 277             (ctx->surface_width - avctx->width) / 2;
 278         sps->conf_win_top_offset    = 0;
 279         sps->conf_win_bottom_offset =
 280             (ctx->surface_height - avctx->height) / 2;
 281     } else {
 282         sps->conformance_window_flag = 0;
 283     }
 284
 285     sps->bit_depth_luma_minus8 =
 286         avctx->profile == FF_PROFILE_HEVC_MAIN_10 ? 2 : 0;
 287     sps->bit_depth_chroma_minus8 = sps->bit_depth_luma_minus8;
 288
 289     sps->log2_max_pic_order_cnt_lsb_minus4 = 8;
 290
 291     sps->sps_sub_layer_ordering_info_present_flag =
 292         vps->vps_sub_layer_ordering_info_present_flag;
 293     for (i = 0; i <= sps->sps_max_sub_layers_minus1; i++) {
 294         sps->sps_max_dec_pic_buffering_minus1[i] =
 295             vps->vps_max_dec_pic_buffering_minus1[i];
 296         sps->sps_max_num_reorder_pics[i] =
 297             vps->vps_max_num_reorder_pics[i];
 298         sps->sps_max_latency_increase_plus1[i] =
 299             vps->vps_max_latency_increase_plus1[i];
 300     }
 301
 302     // These have to come from the capabilities of the encoder.  We have no
 303     // way to query them, so just hardcode parameters which work on the Intel
 304     // driver.
 305     // CTB size from 8x8 to 32x32.
 306     sps->log2_min_luma_coding_block_size_minus3   = 0;
 307     sps->log2_diff_max_min_luma_coding_block_size = 2;
 308     // Transform size from 4x4 to 32x32.
 309     sps->log2_min_luma_transform_block_size_minus2   = 0;
 310     sps->log2_diff_max_min_luma_transform_block_size = 3;
 311     // Full transform hierarchy allowed (2-5).
 312     sps->max_transform_hierarchy_depth_inter = 3;
 313     sps->max_transform_hierarchy_depth_intra = 3;
 314     // AMP works.
 315     sps->amp_enabled_flag = 1;
 316     // SAO and temporal MVP do not work.
 317     sps->sample_adaptive_offset_enabled_flag = 0;
 318     sps->sps_temporal_mvp_enabled_flag       = 0;
 319
 320     sps->pcm_enabled_flag = 0;
 321
 322     // STRPSs should ideally be here rather than defined individually in
 323     // each slice, but the structure isn't completely fixed so for now
 324     // don't bother.
 325     sps->num_short_term_ref_pic_sets     = 0;
 326     sps->long_term_ref_pics_present_flag = 0;
 327
 328     sps->vui_parameters_present_flag = 1;
 329
 330     if (avctx->sample_aspect_ratio.num != 0 &&
 331         avctx->sample_aspect_ratio.den != 0) {
 332         static const AVRational sar_idc[] = {
 333             {   0,  0 },
 334             {   1,  1 }, {  12, 11 }, {  10, 11 }, {  16, 11 },
 335             {  40, 33 }, {  24, 11 }, {  20, 11 }, {  32, 11 },
 336             {  80, 33 }, {  18, 11 }, {  15, 11 }, {  64, 33 },
 337             { 160, 99 }, {   4,  3 }, {   3,  2 }, {   2,  1 },
 338         };
 339         int i;
 340         for (i = 0; i < FF_ARRAY_ELEMS(sar_idc); i++) {
 341             if (avctx->sample_aspect_ratio.num == sar_idc[i].num &&
 342                 avctx->sample_aspect_ratio.den == sar_idc[i].den) {
 343                 vui->aspect_ratio_idc = i;
 344                 break;
 345             }
 346         }
 347         if (i >= FF_ARRAY_ELEMS(sar_idc)) {
 348             vui->aspect_ratio_idc = 255;
 349             vui->sar_width  = avctx->sample_aspect_ratio.num;
 350             vui->sar_height = avctx->sample_aspect_ratio.den;
 351         }
 352         vui->aspect_ratio_info_present_flag = 1;
 353     }
 354
 355     if (avctx->color_range     != AVCOL_RANGE_UNSPECIFIED ||
 356         avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 357         avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 358         avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 359         vui->video_signal_type_present_flag = 1;
 360         vui->video_format      = 5; // Unspecified.
 361         vui->video_full_range_flag =
 362             avctx->color_range == AVCOL_RANGE_JPEG;
 363
 364         if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||
 365             avctx->color_trc       != AVCOL_TRC_UNSPECIFIED ||
 366             avctx->colorspace      != AVCOL_SPC_UNSPECIFIED) {
 367             vui->colour_description_present_flag = 1;
 368             vui->colour_primaries         = avctx->color_primaries;
 369             vui->transfer_characteristics = avctx->color_trc;
 370             vui->matrix_coefficients      = avctx->colorspace;
 371         }
 372     } else {
 373         vui->video_format             = 5;
 374         vui->video_full_range_flag    = 0;
 375         vui->colour_primaries         = avctx->color_primaries;
 376         vui->transfer_characteristics = avctx->color_trc;
 377         vui->matrix_coefficients      = avctx->colorspace;
 378     }
 379
 380     if (avctx->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) {
 381         vui->chroma_loc_info_present_flag = 1;
 382         vui->chroma_sample_loc_type_top_field    =
 383         vui->chroma_sample_loc_type_bottom_field =
 384             avctx->chroma_sample_location - 1;
 385     }
 386
 387     vui->vui_timing_info_present_flag        = 1;
 388     vui->vui_num_units_in_tick               = vps->vps_num_units_in_tick;
 389     vui->vui_time_scale                      = vps->vps_time_scale;
 390     vui->vui_poc_proportional_to_timing_flag = vps->vps_poc_proportional_to_timing_flag;
 391     vui->vui_num_ticks_poc_diff_one_minus1   = vps->vps_num_ticks_poc_diff_one_minus1;
 392     vui->vui_hrd_parameters_present_flag     = 0;
 393
 394     vui->bitstream_restriction_flag    = 1;
 395     vui->motion_vectors_over_pic_boundaries_flag = 1;
 396     vui->restricted_ref_pic_lists_flag = 1;
 397     vui->max_bytes_per_pic_denom       = 0;
 398     vui->max_bits_per_min_cu_denom     = 0;
 399     vui->log2_max_mv_length_horizontal = 15;
 400     vui->log2_max_mv_length_vertical   = 15;
 401
 402
 403     // PPS
 404
 405     pps->nal_unit_header = (H265RawNALUnitHeader) {
 406         .nal_unit_type         = HEVC_NAL_PPS,
 407         .nuh_layer_id          = 0,
 408         .nuh_temporal_id_plus1 = 1,
 409     };
 410
 411     pps->pps_pic_parameter_set_id = 0;
 412     pps->pps_seq_parameter_set_id = sps->sps_seq_parameter_set_id;
 413
 414     pps->num_ref_idx_l0_default_active_minus1 = 0;
 415     pps->num_ref_idx_l1_default_active_minus1 = 0;
 416
 417     pps->init_qp_minus26 = priv->fixed_qp_idr - 26;
 418
 419     pps->cu_qp_delta_enabled_flag = (ctx->va_rc_mode != VA_RC_CQP);
 420     pps->diff_cu_qp_delta_depth   = 0;
 421
 422     pps->pps_loop_filter_across_slices_enabled_flag = 1;
 423
 424
 425     // Fill VAAPI parameter buffers.
 426
 427     *vseq = (VAEncSequenceParameterBufferHEVC) {
 428         .general_profile_idc = vps->profile_tier_level.general_profile_idc,
 429         .general_level_idc   = vps->profile_tier_level.general_level_idc,
 430         .general_tier_flag   = vps->profile_tier_level.general_tier_flag,
 431
 432         .intra_period     = avctx->gop_size,
 433         .intra_idr_period = avctx->gop_size,
 434         .ip_period        = ctx->b_per_p + 1,
 435         .bits_per_second   = avctx->bit_rate,
 436
 437         .pic_width_in_luma_samples  = sps->pic_width_in_luma_samples,
 438         .pic_height_in_luma_samples = sps->pic_height_in_luma_samples,
 439
 440         .seq_fields.bits = {
 441             .chroma_format_idc             = sps->chroma_format_idc,
 442             .separate_colour_plane_flag    = sps->separate_colour_plane_flag,
 443             .bit_depth_luma_minus8         = sps->bit_depth_luma_minus8,
 444             .bit_depth_chroma_minus8       = sps->bit_depth_chroma_minus8,
 445             .scaling_list_enabled_flag     = sps->scaling_list_enabled_flag,
 446             .strong_intra_smoothing_enabled_flag =
 447                 sps->strong_intra_smoothing_enabled_flag,
 448             .amp_enabled_flag              = sps->amp_enabled_flag,
 449             .sample_adaptive_offset_enabled_flag =
 450                 sps->sample_adaptive_offset_enabled_flag,
 451             .pcm_enabled_flag              = sps->pcm_enabled_flag,
 452             .pcm_loop_filter_disabled_flag = sps->pcm_loop_filter_disabled_flag,
 453             .sps_temporal_mvp_enabled_flag = sps->sps_temporal_mvp_enabled_flag,
 454         },
 455
 456         .log2_min_luma_coding_block_size_minus3 =
 457             sps->log2_min_luma_coding_block_size_minus3,
 458         .log2_diff_max_min_luma_coding_block_size =
 459             sps->log2_diff_max_min_luma_coding_block_size,
 460         .log2_min_transform_block_size_minus2 =
 461             sps->log2_min_luma_transform_block_size_minus2,
 462         .log2_diff_max_min_transform_block_size =
 463             sps->log2_diff_max_min_luma_transform_block_size,
 464         .max_transform_hierarchy_depth_inter =
 465             sps->max_transform_hierarchy_depth_inter,
 466         .max_transform_hierarchy_depth_intra =
 467             sps->max_transform_hierarchy_depth_intra,
 468
 469         .pcm_sample_bit_depth_luma_minus1 =
 470             sps->pcm_sample_bit_depth_luma_minus1,
 471         .pcm_sample_bit_depth_chroma_minus1 =
 472             sps->pcm_sample_bit_depth_chroma_minus1,
 473         .log2_min_pcm_luma_coding_block_size_minus3 =
 474             sps->log2_min_pcm_luma_coding_block_size_minus3,
 475         .log2_max_pcm_luma_coding_block_size_minus3 =
 476             sps->log2_min_pcm_luma_coding_block_size_minus3 +
 477             sps->log2_diff_max_min_pcm_luma_coding_block_size,
 478
 479         .vui_parameters_present_flag = 0,
 480     };
 481
 482     *vpic = (VAEncPictureParameterBufferHEVC) {
 483         .decoded_curr_pic = {
 484             .picture_id = VA_INVALID_ID,
 485             .flags      = VA_PICTURE_HEVC_INVALID,
 486         },
 487
 488         .coded_buf = VA_INVALID_ID,
 489
 490         .collocated_ref_pic_index = 0xff,
 491
 492         .last_picture = 0,
 493
 494         .pic_init_qp            = pps->init_qp_minus26 + 26,
 495         .diff_cu_qp_delta_depth = pps->diff_cu_qp_delta_depth,
 496         .pps_cb_qp_offset       = pps->pps_cb_qp_offset,
 497         .pps_cr_qp_offset       = pps->pps_cr_qp_offset,
 498
 499         .num_tile_columns_minus1 = pps->num_tile_columns_minus1,
 500         .num_tile_rows_minus1    = pps->num_tile_rows_minus1,
 501
 502         .log2_parallel_merge_level_minus2 = pps->log2_parallel_merge_level_minus2,
 503         .ctu_max_bitsize_allowed          = 0,
 504
 505         .num_ref_idx_l0_default_active_minus1 =
 506             pps->num_ref_idx_l0_default_active_minus1,
 507         .num_ref_idx_l1_default_active_minus1 =
 508             pps->num_ref_idx_l1_default_active_minus1,
 509
 510         .slice_pic_parameter_set_id = pps->pps_pic_parameter_set_id,
 511
 512         .pic_fields.bits = {
 513             .sign_data_hiding_enabled_flag  = pps->sign_data_hiding_enabled_flag,
 514             .constrained_intra_pred_flag    = pps->constrained_intra_pred_flag,
 515             .transform_skip_enabled_flag    = pps->transform_skip_enabled_flag,
 516             .cu_qp_delta_enabled_flag       = pps->cu_qp_delta_enabled_flag,
 517             .weighted_pred_flag             = pps->weighted_pred_flag,
 518             .weighted_bipred_flag           = pps->weighted_bipred_flag,
 519             .transquant_bypass_enabled_flag = pps->transquant_bypass_enabled_flag,
 520             .tiles_enabled_flag             = pps->tiles_enabled_flag,
 521             .entropy_coding_sync_enabled_flag = pps->entropy_coding_sync_enabled_flag,
 522             .loop_filter_across_tiles_enabled_flag =
 523                 pps->loop_filter_across_tiles_enabled_flag,
 524             .scaling_list_data_present_flag = (sps->sps_scaling_list_data_present_flag |
 525                                                pps->pps_scaling_list_data_present_flag),
 526             .screen_content_flag            = 0,
 527             .enable_gpu_weighted_prediction = 0,
 528             .no_output_of_prior_pics_flag   = 0,
 529         },
 530     };
 531
 532     return 0;
 533 }
 534
 535 static int vaapi_encode_h265_init_picture_params(AVCodecContext *avctx,
 536                                                  VAAPIEncodePicture *pic)
 537 {
 538     VAAPIEncodeContext               *ctx = avctx->priv_data;
 539     VAAPIEncodeH265Context          *priv = ctx->priv_data;
 540     VAAPIEncodeH265Options           *opt = ctx->codec_options;
 541     VAEncPictureParameterBufferHEVC *vpic = pic->codec_picture_params;
 542     int i;
 543
 544     if (pic->type == PICTURE_TYPE_IDR) {
 545         av_assert0(pic->display_order == pic->encode_order);
 546
 547         priv->last_idr_frame = pic->display_order;
 548
 549         priv->slice_nal_unit = HEVC_NAL_IDR_W_RADL;
 550         priv->slice_type     = HEVC_SLICE_I;
 551         priv->pic_type       = 0;
 552     } else {
 553         av_assert0(pic->encode_order > priv->last_idr_frame);
 554
 555         if (pic->type == PICTURE_TYPE_I) {
 556             priv->slice_nal_unit = HEVC_NAL_CRA_NUT;
 557             priv->slice_type     = HEVC_SLICE_I;
 558             priv->pic_type       = 0;
 559         } else if (pic->type == PICTURE_TYPE_P) {
 560             av_assert0(pic->refs[0]);
 561             priv->slice_nal_unit = HEVC_NAL_TRAIL_R;
 562             priv->slice_type     = HEVC_SLICE_P;
 563             priv->pic_type       = 1;
 564         } else {
 565             av_assert0(pic->refs[0] && pic->refs[1]);
 566             if (pic->refs[1]->type == PICTURE_TYPE_I)
 567                 priv->slice_nal_unit = HEVC_NAL_RASL_N;
 568             else
 569                 priv->slice_nal_unit = HEVC_NAL_TRAIL_N;
 570             priv->slice_type = HEVC_SLICE_B;
 571             priv->pic_type   = 2;
 572         }
 573     }
 574     priv->pic_order_cnt = pic->display_order - priv->last_idr_frame;
 575
 576     if (opt->aud) {
 577         priv->aud_needed = 1;
 578         priv->aud.nal_unit_header = (H265RawNALUnitHeader) {
 579             .nal_unit_type         = HEVC_NAL_AUD,
 580             .nuh_layer_id          = 0,
 581             .nuh_temporal_id_plus1 = 1,
 582         };
 583         priv->aud.pic_type = priv->pic_type;
 584     } else {
 585         priv->aud_needed = 0;
 586     }
 587
 588     vpic->decoded_curr_pic = (VAPictureHEVC) {
 589         .picture_id    = pic->recon_surface,
 590         .pic_order_cnt = priv->pic_order_cnt,
 591         .flags         = 0,
 592     };
 593
 594     for (i = 0; i < pic->nb_refs; i++) {
 595         VAAPIEncodePicture *ref = pic->refs[i];
 596         av_assert0(ref && ref->encode_order < pic->encode_order);
 597
 598         vpic->reference_frames[i] = (VAPictureHEVC) {
 599             .picture_id    = ref->recon_surface,
 600             .pic_order_cnt = ref->display_order - priv->last_idr_frame,
 601             .flags = (ref->display_order < pic->display_order ?
 602                       VA_PICTURE_HEVC_RPS_ST_CURR_BEFORE : 0) |
 603                      (ref->display_order > pic->display_order ?
 604                       VA_PICTURE_HEVC_RPS_ST_CURR_AFTER  : 0),
 605         };
 606     }
 607     for (; i < FF_ARRAY_ELEMS(vpic->reference_frames); i++) {
 608         vpic->reference_frames[i] = (VAPictureHEVC) {
 609             .picture_id = VA_INVALID_ID,
 610             .flags      = VA_PICTURE_HEVC_INVALID,
 611         };
 612     }
 613
 614     vpic->coded_buf = pic->output_buffer;
 615
 616     vpic->nal_unit_type = priv->slice_nal_unit;
 617
 618     switch (pic->type) {
 619     case PICTURE_TYPE_IDR:
 620         vpic->pic_fields.bits.idr_pic_flag       = 1;
 621         vpic->pic_fields.bits.coding_type        = 1;
 622         vpic->pic_fields.bits.reference_pic_flag = 1;
 623         break;
 624     case PICTURE_TYPE_I:
 625         vpic->pic_fields.bits.idr_pic_flag       = 0;
 626         vpic->pic_fields.bits.coding_type        = 1;
 627         vpic->pic_fields.bits.reference_pic_flag = 1;
 628         break;
 629     case PICTURE_TYPE_P:
 630         vpic->pic_fields.bits.idr_pic_flag       = 0;
 631         vpic->pic_fields.bits.coding_type        = 2;
 632         vpic->pic_fields.bits.reference_pic_flag = 1;
 633         break;
 634     case PICTURE_TYPE_B:
 635         vpic->pic_fields.bits.idr_pic_flag       = 0;
 636         vpic->pic_fields.bits.coding_type        = 3;
 637         vpic->pic_fields.bits.reference_pic_flag = 0;
 638         break;
 639     default:
 640         av_assert0(0 && "invalid picture type");
 641     }
 642
 643     pic->nb_slices = 1;
 644
 645     return 0;
 646 }
 647
 648 static int vaapi_encode_h265_init_slice_params(AVCodecContext *avctx,
 649                                                VAAPIEncodePicture *pic,
 650                                                VAAPIEncodeSlice *slice)
 651 {
 652     VAAPIEncodeContext                *ctx = avctx->priv_data;
 653     VAAPIEncodeH265Context           *priv = ctx->priv_data;
 654     const H265RawSPS                  *sps = &priv->sps;
 655     const H265RawPPS                  *pps = &priv->pps;
 656     H265RawSliceHeader                 *sh = &priv->slice.header;
 657     VAEncPictureParameterBufferHEVC  *vpic = pic->codec_picture_params;
 658     VAEncSliceParameterBufferHEVC  *vslice = slice->codec_slice_params;
 659     int i;
 660
 661     sh->nal_unit_header = (H265RawNALUnitHeader) {
 662         .nal_unit_type         = priv->slice_nal_unit,
 663         .nuh_layer_id          = 0,
 664         .nuh_temporal_id_plus1 = 1,
 665     };
 666
 667     sh->slice_pic_parameter_set_id      = pps->pps_pic_parameter_set_id;
 668
 669     // Currently we only support one slice per frame.
 670     sh->first_slice_segment_in_pic_flag = 1;
 671     sh->slice_segment_address           = 0;
 672
 673     sh->slice_type = priv->slice_type;
 674
 675     sh->slice_pic_order_cnt_lsb = priv->pic_order_cnt &
 676         (1 << (sps->log2_max_pic_order_cnt_lsb_minus4 + 4)) - 1;
 677
 678     if (pic->type != PICTURE_TYPE_IDR) {
 679         H265RawSTRefPicSet *rps;
 680         VAAPIEncodePicture *st;
 681         int used;
 682
 683         sh->short_term_ref_pic_set_sps_flag = 0;
 684
 685         rps = &sh->short_term_ref_pic_set;
 686         memset(rps, 0, sizeof(*rps));
 687
 688         for (st = ctx->pic_start; st; st = st->next) {
 689             if (st->encode_order >= pic->encode_order) {
 690                 // Not yet in DPB.
 691                 continue;
 692             }
 693             used = 0;
 694             for (i = 0; i < pic->nb_refs; i++) {
 695                 if (pic->refs[i] == st)
 696                     used = 1;
 697             }
 698             if (!used) {
 699                 // Usually each picture always uses all of the others in the
 700                 // DPB as references.  The one case we have to treat here is
 701                 // a non-IDR IRAP picture, which may need to hold unused
 702                 // references across itself to be used for the decoding of
 703                 // following RASL pictures.  This looks for such an RASL
 704                 // picture, and keeps the reference if there is one.
 705                 VAAPIEncodePicture *rp;
 706                 for (rp = ctx->pic_start; rp; rp = rp->next) {
 707                     if (rp->encode_order < pic->encode_order)
 708                         continue;
 709                     if (rp->type != PICTURE_TYPE_B)
 710                         continue;
 711                     if (rp->refs[0] == st && rp->refs[1] == pic)
 712                         break;
 713                 }
 714                 if (!rp)
 715                     continue;
 716             }
 717             // This only works for one instance of each (delta_poc_sN_minus1
 718             // is relative to the previous frame in the list, not relative to
 719             // the current frame directly).
 720             if (st->display_order < pic->display_order) {
 721                 rps->delta_poc_s0_minus1[rps->num_negative_pics] =
 722                     pic->display_order - st->display_order - 1;
 723                 rps->used_by_curr_pic_s0_flag[rps->num_negative_pics] = used;
 724                 ++rps->num_negative_pics;
 725             } else {
 726                 rps->delta_poc_s1_minus1[rps->num_positive_pics] =
 727                     st->display_order - pic->display_order - 1;
 728                 rps->used_by_curr_pic_s1_flag[rps->num_positive_pics] = used;
 729                 ++rps->num_positive_pics;
 730             }
 731         }
 732
 733         sh->num_long_term_sps  = 0;
 734         sh->num_long_term_pics = 0;
 735
 736         sh->slice_temporal_mvp_enabled_flag =
 737             sps->sps_temporal_mvp_enabled_flag;
 738         if (sh->slice_temporal_mvp_enabled_flag) {
 739             sh->collocated_from_l0_flag = sh->slice_type == HEVC_SLICE_B;
 740             sh->collocated_ref_idx      = 0;
 741         }
 742
 743         sh->num_ref_idx_active_override_flag = 0;
 744         sh->num_ref_idx_l0_active_minus1 = pps->num_ref_idx_l0_default_active_minus1;
 745         sh->num_ref_idx_l1_active_minus1 = pps->num_ref_idx_l1_default_active_minus1;
 746     }
 747
 748     sh->slice_sao_luma_flag = sh->slice_sao_chroma_flag =
 749         sps->sample_adaptive_offset_enabled_flag;
 750
 751     if (pic->type == PICTURE_TYPE_B)
 752         sh->slice_qp_delta = priv->fixed_qp_b - (pps->init_qp_minus26 + 26);
 753     else if (pic->type == PICTURE_TYPE_P)
 754         sh->slice_qp_delta = priv->fixed_qp_p - (pps->init_qp_minus26 + 26);
 755     else
 756         sh->slice_qp_delta = priv->fixed_qp_idr - (pps->init_qp_minus26 + 26);
 757
 758
 759     *vslice = (VAEncSliceParameterBufferHEVC) {
 760         .slice_segment_address = sh->slice_segment_address,
 761         .num_ctu_in_slice      = priv->ctu_width * priv->ctu_height,
 762
 763         .slice_type                 = sh->slice_type,
 764         .slice_pic_parameter_set_id = sh->slice_pic_parameter_set_id,
 765
 766         .num_ref_idx_l0_active_minus1 = sh->num_ref_idx_l0_active_minus1,
 767         .num_ref_idx_l1_active_minus1 = sh->num_ref_idx_l1_active_minus1,
 768         .ref_pic_list0[0]             = vpic->reference_frames[0],
 769         .ref_pic_list1[0]             = vpic->reference_frames[1],
 770
 771         .luma_log2_weight_denom         = sh->luma_log2_weight_denom,
 772         .delta_chroma_log2_weight_denom = sh->delta_chroma_log2_weight_denom,
 773
 774         .max_num_merge_cand = 5 - sh->five_minus_max_num_merge_cand,
 775
 776         .slice_qp_delta     = sh->slice_qp_delta,
 777         .slice_cb_qp_offset = sh->slice_cb_qp_offset,
 778         .slice_cr_qp_offset = sh->slice_cr_qp_offset,
 779
 780         .slice_beta_offset_div2 = sh->slice_beta_offset_div2,
 781         .slice_tc_offset_div2   = sh->slice_tc_offset_div2,
 782
 783         .slice_fields.bits = {
 784             .last_slice_of_pic_flag       = 1,
 785             .dependent_slice_segment_flag = sh->dependent_slice_segment_flag,
 786             .colour_plane_id              = sh->colour_plane_id,
 787             .slice_temporal_mvp_enabled_flag =
 788                 sh->slice_temporal_mvp_enabled_flag,
 789             .slice_sao_luma_flag          = sh->slice_sao_luma_flag,
 790             .slice_sao_chroma_flag        = sh->slice_sao_chroma_flag,
 791             .num_ref_idx_active_override_flag =
 792                 sh->num_ref_idx_active_override_flag,
 793             .mvd_l1_zero_flag             = sh->mvd_l1_zero_flag,
 794             .cabac_init_flag              = sh->cabac_init_flag,
 795             .slice_deblocking_filter_disabled_flag =
 796                 sh->slice_deblocking_filter_disabled_flag,
 797             .slice_loop_filter_across_slices_enabled_flag =
 798                 sh->slice_loop_filter_across_slices_enabled_flag,
 799             .collocated_from_l0_flag      = sh->collocated_from_l0_flag,
 800         },
 801     };
 802
 803
 804     return 0;
 805 }
 806
 807 static av_cold int vaapi_encode_h265_configure(AVCodecContext *avctx)
 808 {
 809     VAAPIEncodeContext      *ctx = avctx->priv_data;
 810     VAAPIEncodeH265Context *priv = ctx->priv_data;
 811     VAAPIEncodeH265Options  *opt = ctx->codec_options;
 812     int err;
 813
 814     err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_HEVC, avctx);
 815     if (err < 0)
 816         return err;
 817
 818     priv->ctu_width     = FFALIGN(ctx->surface_width,  32) / 32;
 819     priv->ctu_height    = FFALIGN(ctx->surface_height, 32) / 32;
 820
 821     av_log(avctx, AV_LOG_VERBOSE, "Input %ux%u -> Surface %ux%u -> CTU %ux%u.\n",
 822            avctx->width, avctx->height, ctx->surface_width,
 823            ctx->surface_height, priv->ctu_width, priv->ctu_height);
 824
 825     if (ctx->va_rc_mode == VA_RC_CQP) {
 826         priv->fixed_qp_p = opt->qp;
 827         if (avctx->i_quant_factor > 0.0)
 828             priv->fixed_qp_idr = (int)((priv->fixed_qp_p * avctx->i_quant_factor +
 829                                         avctx->i_quant_offset) + 0.5);
 830         else
 831             priv->fixed_qp_idr = priv->fixed_qp_p;
 832         if (avctx->b_quant_factor > 0.0)
 833             priv->fixed_qp_b = (int)((priv->fixed_qp_p * avctx->b_quant_factor +
 834                                       avctx->b_quant_offset) + 0.5);
 835         else
 836             priv->fixed_qp_b = priv->fixed_qp_p;
 837
 838         av_log(avctx, AV_LOG_DEBUG, "Using fixed QP = "
 839                "%d / %d / %d for IDR- / P- / B-frames.\n",
 840                priv->fixed_qp_idr, priv->fixed_qp_p, priv->fixed_qp_b);
 841
 842     } else if (ctx->va_rc_mode == VA_RC_CBR ||
 843                ctx->va_rc_mode == VA_RC_VBR) {
 844         // These still need to be  set for pic_init_qp/slice_qp_delta.
 845         priv->fixed_qp_idr = 30;
 846         priv->fixed_qp_p   = 30;
 847         priv->fixed_qp_b   = 30;
 848
 849         av_log(avctx, AV_LOG_DEBUG, "Using %s-bitrate = %"PRId64" bps.\n",
 850                ctx->va_rc_mode == VA_RC_CBR ? "constant" : "variable",
 851                avctx->bit_rate);
 852
 853     } else {
 854         av_assert0(0 && "Invalid RC mode.");
 855     }
 856
 857     return 0;
 858 }
 859
 860 static const VAAPIEncodeType vaapi_encode_type_h265 = {
 861     .priv_data_size        = sizeof(VAAPIEncodeH265Context),
 862
 863     .configure             = &vaapi_encode_h265_configure,
 864
 865     .sequence_params_size  = sizeof(VAEncSequenceParameterBufferHEVC),
 866     .init_sequence_params  = &vaapi_encode_h265_init_sequence_params,
 867
 868     .picture_params_size   = sizeof(VAEncPictureParameterBufferHEVC),
 869     .init_picture_params   = &vaapi_encode_h265_init_picture_params,
 870
 871     .slice_params_size     = sizeof(VAEncSliceParameterBufferHEVC),
 872     .init_slice_params     = &vaapi_encode_h265_init_slice_params,
 873
 874     .sequence_header_type  = VAEncPackedHeaderSequence,
 875     .write_sequence_header = &vaapi_encode_h265_write_sequence_header,
 876
 877     .slice_header_type     = VAEncPackedHeaderHEVC_Slice,
 878     .write_slice_header    = &vaapi_encode_h265_write_slice_header,
 879 };
 880
 881 static av_cold int vaapi_encode_h265_init(AVCodecContext *avctx)
 882 {
 883     VAAPIEncodeContext *ctx = avctx->priv_data;
 884
 885     ctx->codec = &vaapi_encode_type_h265;
 886
 887     switch (avctx->profile) {
 888     case FF_PROFILE_HEVC_MAIN:
 889     case FF_PROFILE_UNKNOWN:
 890         ctx->va_profile = VAProfileHEVCMain;
 891         ctx->va_rt_format = VA_RT_FORMAT_YUV420;
 892         break;
 893     case FF_PROFILE_HEVC_MAIN_10:
 894 #ifdef VA_RT_FORMAT_YUV420_10BPP
 895         ctx->va_profile = VAProfileHEVCMain10;
 896         ctx->va_rt_format = VA_RT_FORMAT_YUV420_10BPP;
 897         break;
 898 #else
 899         av_log(avctx, AV_LOG_ERROR, "10-bit encoding is not "
 900                "supported with this VAAPI version.\n");
 901         return AVERROR(ENOSYS);
 902 #endif
 903     default:
 904         av_log(avctx, AV_LOG_ERROR, "Unknown H.265 profile %d.\n",
 905                avctx->profile);
 906         return AVERROR(EINVAL);
 907     }
 908     ctx->va_entrypoint = VAEntrypointEncSlice;
 909
 910     if (avctx->bit_rate > 0) {
 911         if (avctx->rc_max_rate == avctx->bit_rate)
 912             ctx->va_rc_mode = VA_RC_CBR;
 913         else
 914             ctx->va_rc_mode = VA_RC_VBR;
 915     } else
 916         ctx->va_rc_mode = VA_RC_CQP;
 917
 918     ctx->va_packed_headers =
 919         VA_ENC_PACKED_HEADER_SEQUENCE | // VPS, SPS and PPS.
 920         VA_ENC_PACKED_HEADER_SLICE;     // Slice headers.
 921
 922     ctx->surface_width  = FFALIGN(avctx->width,  16);
 923     ctx->surface_height = FFALIGN(avctx->height, 16);
 924
 925     return ff_vaapi_encode_init(avctx);
 926 }
 927
 928 static av_cold int vaapi_encode_h265_close(AVCodecContext *avctx)
 929 {
 930     VAAPIEncodeContext *ctx = avctx->priv_data;
 931     VAAPIEncodeH265Context *priv = ctx->priv_data;
 932
 933     if (priv)
 934         ff_cbs_close(&priv->cbc);
 935
 936     return ff_vaapi_encode_close(avctx);
 937 }
 938
 939 #define OFFSET(x) (offsetof(VAAPIEncodeContext, codec_options_data) + \
 940                    offsetof(VAAPIEncodeH265Options, x))
 941 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
 942 static const AVOption vaapi_encode_h265_options[] = {
 943     { "qp", "Constant QP (for P-frames; scaled by qfactor/qoffset for I/B)",
 944       OFFSET(qp), AV_OPT_TYPE_INT, { .i64 = 25 }, 0, 52, FLAGS },
 945
 946     { "aud", "Include AUD",
 947       OFFSET(aud), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS },
 948
 949     { NULL },
 950 };
 951
 952 static const AVCodecDefault vaapi_encode_h265_defaults[] = {
 953     { "profile",        "1"   },
 954     { "level",          "51"  },
 955     { "b",              "0"   },
 956     { "bf",             "2"   },
 957     { "g",              "120" },
 958     { "i_qfactor",      "1"   },
 959     { "i_qoffset",      "0"   },
 960     { "b_qfactor",      "6/5" },
 961     { "b_qoffset",      "0"   },
 962     { NULL },
 963 };
 964
 965 static const AVClass vaapi_encode_h265_class = {
 966     .class_name = "h265_vaapi",
 967     .item_name  = av_default_item_name,
 968     .option     = vaapi_encode_h265_options,
 969     .version    = LIBAVUTIL_VERSION_INT,
 970 };
 971
 972 AVCodec ff_hevc_vaapi_encoder = {
 973     .name           = "hevc_vaapi",
 974     .long_name      = NULL_IF_CONFIG_SMALL("H.265/HEVC (VAAPI)"),
 975     .type           = AVMEDIA_TYPE_VIDEO,
 976     .id             = AV_CODEC_ID_HEVC,
 977     .priv_data_size = (sizeof(VAAPIEncodeContext) +
 978                        sizeof(VAAPIEncodeH265Options)),
 979     .init           = &vaapi_encode_h265_init,
 980     .encode2        = &ff_vaapi_encode2,
 981     .close          = &vaapi_encode_h265_close,
 982     .priv_class     = &vaapi_encode_h265_class,
 983     .capabilities   = AV_CODEC_CAP_DELAY,
 984     .defaults       = vaapi_encode_h265_defaults,
 985     .pix_fmts = (const enum AVPixelFormat[]) {
 986         AV_PIX_FMT_VAAPI,
 987         AV_PIX_FMT_NONE,
 988     },
 989 };