/** * Append picture to the decoded picture buffer, in a VA API form that * merges the second field picture attributes with the first, if * available. The decoded picture buffer's size must be large enough * to receive the new VA API picture object. */ static int dpb_add(DPB *dpb, const H264Picture *pic) { int i; if (dpb->size >= dpb->max_size) return -1; for (i = 0; i < dpb->size; i++) { VAPictureH264 * const va_pic = &dpb->va_pics[i]; if (va_pic->picture_id == ff_vaapi_get_surface_id(pic->f)) { VAPictureH264 temp_va_pic; fill_vaapi_pic(&temp_va_pic, pic, 0); if ((temp_va_pic.flags ^ va_pic->flags) & (VA_PICTURE_H264_TOP_FIELD | VA_PICTURE_H264_BOTTOM_FIELD)) { va_pic->flags |= temp_va_pic.flags & (VA_PICTURE_H264_TOP_FIELD | VA_PICTURE_H264_BOTTOM_FIELD); /* Merge second field */ if (temp_va_pic.flags & VA_PICTURE_H264_TOP_FIELD) { va_pic->TopFieldOrderCnt = temp_va_pic.TopFieldOrderCnt; } else { va_pic->BottomFieldOrderCnt = temp_va_pic.BottomFieldOrderCnt; } } return 0; } } fill_vaapi_pic(&dpb->va_pics[dpb->size++], pic, 0); return 0; }
/** * Fill in VA API reference picture lists from the Libav reference * picture list. * * @param[out] RefPicList VA API internal reference picture list * @param[in] ref_list A pointer to the Libav reference list * @param[in] ref_count The number of reference pictures in ref_list */ static void fill_vaapi_RefPicList(VAPictureH264 RefPicList[32], const H264Ref *ref_list, unsigned int ref_count) { unsigned int i, n = 0; for (i = 0; i < ref_count; i++) if (ref_list[i].reference) fill_vaapi_pic(&RefPicList[n++], ref_list[i].parent, 0); for (; n < 32; n++) init_vaapi_pic(&RefPicList[n]); }
static void fill_vaapi_ReferenceFrames(const HEVCContext *h, VAPictureParameterBufferHEVC *pp) { const HEVCFrame *current_picture = h->ref; int i, j, rps_type; for (i = 0, j = 0; i < FF_ARRAY_ELEMS(pp->ReferenceFrames); i++) { const HEVCFrame *frame = NULL; while (!frame && j < FF_ARRAY_ELEMS(h->DPB)) { if (&h->DPB[j] != current_picture && (h->DPB[j].flags & (HEVC_FRAME_FLAG_LONG_REF | HEVC_FRAME_FLAG_SHORT_REF))) frame = &h->DPB[j]; j++; } init_vaapi_pic(&pp->ReferenceFrames[i]); if (frame) { rps_type = find_frame_rps_type(h, frame); fill_vaapi_pic(&pp->ReferenceFrames[i], frame, rps_type); } } }
static void fill_picture_parameters(const HEVCContext *h, VAPictureParameterBufferHEVC *pp) { int i; pp->pic_fields.value = 0; pp->slice_parsing_fields.value = 0; fill_vaapi_pic(&pp->CurrPic, h->ref, 0); fill_vaapi_ReferenceFrames(h, pp); pp->pic_width_in_luma_samples = h->ps.sps->width; pp->pic_height_in_luma_samples = h->ps.sps->height; pp->log2_min_luma_coding_block_size_minus3 = h->ps.sps->log2_min_cb_size - 3; pp->pic_fields.bits.chroma_format_idc = h->ps.sps->chroma_format_idc; pp->sps_max_dec_pic_buffering_minus1 = h->ps.sps->temporal_layer[h->ps.sps->max_sub_layers - 1].max_dec_pic_buffering - 1; pp->log2_diff_max_min_luma_coding_block_size = h->ps.sps->log2_diff_max_min_coding_block_size; pp->log2_min_transform_block_size_minus2 = h->ps.sps->log2_min_tb_size - 2; pp->log2_diff_max_min_transform_block_size = h->ps.sps->log2_max_trafo_size - h->ps.sps->log2_min_tb_size; pp->max_transform_hierarchy_depth_inter = h->ps.sps->max_transform_hierarchy_depth_inter; pp->max_transform_hierarchy_depth_intra = h->ps.sps->max_transform_hierarchy_depth_intra; pp->num_short_term_ref_pic_sets = h->ps.sps->nb_st_rps; pp->num_long_term_ref_pic_sps = h->ps.sps->num_long_term_ref_pics_sps; pp->num_ref_idx_l0_default_active_minus1 = h->ps.pps->num_ref_idx_l0_default_active - 1; pp->num_ref_idx_l1_default_active_minus1 = h->ps.pps->num_ref_idx_l1_default_active - 1; pp->init_qp_minus26 = h->ps.pps->pic_init_qp_minus26; pp->pps_cb_qp_offset = h->ps.pps->cb_qp_offset; pp->pps_cr_qp_offset = h->ps.pps->cr_qp_offset; pp->pic_fields.bits.tiles_enabled_flag = h->ps.pps->tiles_enabled_flag; pp->pic_fields.bits.separate_colour_plane_flag = h->ps.sps->separate_colour_plane_flag; pp->pic_fields.bits.pcm_enabled_flag = h->ps.sps->pcm_enabled_flag; pp->pic_fields.bits.scaling_list_enabled_flag = h->ps.sps->scaling_list_enable_flag; pp->pic_fields.bits.transform_skip_enabled_flag = h->ps.pps->transform_skip_enabled_flag; pp->pic_fields.bits.amp_enabled_flag = h->ps.sps->amp_enabled_flag; pp->pic_fields.bits.strong_intra_smoothing_enabled_flag = h->ps.sps->sps_strong_intra_smoothing_enable_flag; pp->pic_fields.bits.sign_data_hiding_enabled_flag = h->ps.pps->sign_data_hiding_flag; pp->pic_fields.bits.constrained_intra_pred_flag = h->ps.pps->constrained_intra_pred_flag; pp->pic_fields.bits.cu_qp_delta_enabled_flag = h->ps.pps->cu_qp_delta_enabled_flag; pp->pic_fields.bits.weighted_pred_flag = h->ps.pps->weighted_pred_flag; pp->pic_fields.bits.weighted_bipred_flag = h->ps.pps->weighted_bipred_flag; pp->pic_fields.bits.transquant_bypass_enabled_flag = h->ps.pps->transquant_bypass_enable_flag; pp->pic_fields.bits.entropy_coding_sync_enabled_flag = h->ps.pps->entropy_coding_sync_enabled_flag; pp->pic_fields.bits.pps_loop_filter_across_slices_enabled_flag = h->ps.pps->seq_loop_filter_across_slices_enabled_flag; pp->pic_fields.bits.loop_filter_across_tiles_enabled_flag = h->ps.pps->loop_filter_across_tiles_enabled_flag; pp->pic_fields.bits.pcm_loop_filter_disabled_flag = h->ps.sps->pcm.loop_filter_disable_flag; pp->pcm_sample_bit_depth_luma_minus1 = h->ps.sps->pcm.bit_depth - 1; pp->pcm_sample_bit_depth_chroma_minus1 = h->ps.sps->pcm.bit_depth_chroma - 1; pp->log2_min_pcm_luma_coding_block_size_minus3 = h->ps.sps->pcm.log2_min_pcm_cb_size - 3; pp->log2_diff_max_min_pcm_luma_coding_block_size = h->ps.sps->pcm.log2_max_pcm_cb_size - h->ps.sps->pcm.log2_min_pcm_cb_size; memset(pp->column_width_minus1, 0, sizeof(pp->column_width_minus1)); memset(pp->row_height_minus1, 0, sizeof(pp->row_height_minus1)); if (h->ps.pps->tiles_enabled_flag) { pp->num_tile_columns_minus1 = h->ps.pps->num_tile_columns - 1; pp->num_tile_rows_minus1 = h->ps.pps->num_tile_rows - 1; for (i = 0; i < h->ps.pps->num_tile_columns; i++) pp->column_width_minus1[i] = h->ps.pps->column_width[i] - 1; for (i = 0; i < h->ps.pps->num_tile_rows; i++) pp->row_height_minus1[i] = h->ps.pps->row_height[i] - 1; } pp->diff_cu_qp_delta_depth = h->ps.pps->diff_cu_qp_delta_depth; pp->pps_beta_offset_div2 = h->ps.pps->beta_offset / 2; pp->pps_tc_offset_div2 = h->ps.pps->tc_offset / 2; pp->log2_parallel_merge_level_minus2 = h->ps.pps->log2_parallel_merge_level - 2; /* Different chroma/luma bit depths are currently not supported by ffmpeg. */ pp->bit_depth_luma_minus8 = h->ps.sps->bit_depth - 8; pp->bit_depth_chroma_minus8 = h->ps.sps->bit_depth - 8; pp->slice_parsing_fields.bits.lists_modification_present_flag = h->ps.pps->lists_modification_present_flag; pp->slice_parsing_fields.bits.long_term_ref_pics_present_flag = h->ps.sps->long_term_ref_pics_present_flag; pp->slice_parsing_fields.bits.sps_temporal_mvp_enabled_flag = h->ps.sps->sps_temporal_mvp_enabled_flag; pp->slice_parsing_fields.bits.cabac_init_present_flag = h->ps.pps->cabac_init_present_flag; pp->slice_parsing_fields.bits.output_flag_present_flag = h->ps.pps->output_flag_present_flag; pp->slice_parsing_fields.bits.dependent_slice_segments_enabled_flag = h->ps.pps->dependent_slice_segments_enabled_flag; pp->slice_parsing_fields.bits.pps_slice_chroma_qp_offsets_present_flag = h->ps.pps->pic_slice_level_chroma_qp_offsets_present_flag; pp->slice_parsing_fields.bits.sample_adaptive_offset_enabled_flag = h->ps.sps->sao_enabled; pp->slice_parsing_fields.bits.deblocking_filter_override_enabled_flag = h->ps.pps->deblocking_filter_override_enabled_flag; pp->slice_parsing_fields.bits.pps_disable_deblocking_filter_flag = h->ps.pps->disable_dbf; pp->slice_parsing_fields.bits.slice_segment_header_extension_present_flag = h->ps.pps->slice_header_extension_present_flag; pp->log2_max_pic_order_cnt_lsb_minus4 = h->ps.sps->log2_max_poc_lsb - 4; pp->num_extra_slice_header_bits = h->ps.pps->num_extra_slice_header_bits; if (h->nal_unit_type >= NAL_BLA_W_LP && h->nal_unit_type <= NAL_CRA_NUT) { pp->slice_parsing_fields.bits.RapPicFlag = 1; } else { pp->slice_parsing_fields.bits.RapPicFlag = 0; } if (IS_IDR(h)) { pp->slice_parsing_fields.bits.IdrPicFlag = 1; } else { pp->slice_parsing_fields.bits.IdrPicFlag = 0; } if (IS_IRAP(h)) { pp->slice_parsing_fields.bits.IntraPicFlag = 1; } else { pp->slice_parsing_fields.bits.IntraPicFlag = 0; } if (h->sh.short_term_ref_pic_set_sps_flag == 0 && h->sh.short_term_rps) { pp->st_rps_bits = h->sh.short_term_ref_pic_set_size; } else { pp->st_rps_bits = 0; } /* TODO */ pp->pic_fields.bits.NoPicReorderingFlag = 0; pp->pic_fields.bits.NoBiPredFlag = 0; }
/** Initialize and start decoding a frame with VA API. */ static int start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size) { H264Context * const h = avctx->priv_data; MpegEncContext * const s = &h->s; struct vaapi_context * const vactx = avctx->hwaccel_context; VAPictureParameterBufferH264 *pic_param; VAIQMatrixBufferH264 *iq_matrix; av_dlog(avctx, "start_frame()\n"); vactx->slice_param_size = sizeof(VASliceParameterBufferH264); /* Fill in VAPictureParameterBufferH264. */ pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferH264)); if (!pic_param) return -1; fill_vaapi_pic(&pic_param->CurrPic, s->current_picture_ptr, s->picture_structure); if (fill_vaapi_ReferenceFrames(pic_param, h) < 0) return -1; pic_param->picture_width_in_mbs_minus1 = s->mb_width - 1; pic_param->picture_height_in_mbs_minus1 = s->mb_height - 1; pic_param->bit_depth_luma_minus8 = h->sps.bit_depth_luma - 8; pic_param->bit_depth_chroma_minus8 = h->sps.bit_depth_chroma - 8; pic_param->num_ref_frames = h->sps.ref_frame_count; pic_param->seq_fields.value = 0; /* reset all bits */ pic_param->seq_fields.bits.chroma_format_idc = h->sps.chroma_format_idc; pic_param->seq_fields.bits.residual_colour_transform_flag = h->sps.residual_color_transform_flag; /* XXX: only for 4:4:4 high profile? */ pic_param->seq_fields.bits.gaps_in_frame_num_value_allowed_flag = h->sps.gaps_in_frame_num_allowed_flag; pic_param->seq_fields.bits.frame_mbs_only_flag = h->sps.frame_mbs_only_flag; pic_param->seq_fields.bits.mb_adaptive_frame_field_flag = h->sps.mb_aff; pic_param->seq_fields.bits.direct_8x8_inference_flag = h->sps.direct_8x8_inference_flag; pic_param->seq_fields.bits.MinLumaBiPredSize8x8 = h->sps.level_idc >= 31; /* A.3.3.2 */ pic_param->seq_fields.bits.log2_max_frame_num_minus4 = h->sps.log2_max_frame_num - 4; pic_param->seq_fields.bits.pic_order_cnt_type = h->sps.poc_type; pic_param->seq_fields.bits.log2_max_pic_order_cnt_lsb_minus4 = h->sps.log2_max_poc_lsb - 4; pic_param->seq_fields.bits.delta_pic_order_always_zero_flag = h->sps.delta_pic_order_always_zero_flag; pic_param->num_slice_groups_minus1 = h->pps.slice_group_count - 1; pic_param->slice_group_map_type = h->pps.mb_slice_group_map_type; pic_param->slice_group_change_rate_minus1 = 0; /* XXX: unimplemented in FFmpeg */ pic_param->pic_init_qp_minus26 = h->pps.init_qp - 26; pic_param->pic_init_qs_minus26 = h->pps.init_qs - 26; pic_param->chroma_qp_index_offset = h->pps.chroma_qp_index_offset[0]; pic_param->second_chroma_qp_index_offset = h->pps.chroma_qp_index_offset[1]; pic_param->pic_fields.value = 0; /* reset all bits */ pic_param->pic_fields.bits.entropy_coding_mode_flag = h->pps.cabac; pic_param->pic_fields.bits.weighted_pred_flag = h->pps.weighted_pred; pic_param->pic_fields.bits.weighted_bipred_idc = h->pps.weighted_bipred_idc; pic_param->pic_fields.bits.transform_8x8_mode_flag = h->pps.transform_8x8_mode; pic_param->pic_fields.bits.field_pic_flag = s->picture_structure != PICT_FRAME; pic_param->pic_fields.bits.constrained_intra_pred_flag = h->pps.constrained_intra_pred; pic_param->pic_fields.bits.pic_order_present_flag = h->pps.pic_order_present; pic_param->pic_fields.bits.deblocking_filter_control_present_flag = h->pps.deblocking_filter_parameters_present; pic_param->pic_fields.bits.redundant_pic_cnt_present_flag = h->pps.redundant_pic_cnt_present; pic_param->pic_fields.bits.reference_pic_flag = h->nal_ref_idc != 0; pic_param->frame_num = h->frame_num; /* Fill in VAIQMatrixBufferH264. */ iq_matrix = ff_vaapi_alloc_iq_matrix(vactx, sizeof(VAIQMatrixBufferH264)); if (!iq_matrix) return -1; memcpy(iq_matrix->ScalingList4x4, h->pps.scaling_matrix4, sizeof(iq_matrix->ScalingList4x4)); memcpy(iq_matrix->ScalingList8x8, h->pps.scaling_matrix8, sizeof(iq_matrix->ScalingList8x8)); return 0; }