static int vaapi_h264_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size) { H264Context * const h = avctx->priv_data; struct vaapi_context * const vactx = avctx->hwaccel_context; VAPictureParameterBufferH264 *pic_param; VAIQMatrixBufferH264 *iq_matrix; ff_dlog(avctx, "vaapi_h264_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, h->cur_pic_ptr, h->picture_structure); if (fill_vaapi_ReferenceFrames(pic_param, h) < 0) return -1; pic_param->picture_width_in_mbs_minus1 = h->mb_width - 1; pic_param->picture_height_in_mbs_minus1 = h->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 Libav */ 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 = h->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[0], h->pps.scaling_matrix8[0], sizeof(iq_matrix->ScalingList8x8[0])); memcpy(iq_matrix->ScalingList8x8[1], h->pps.scaling_matrix8[3], sizeof(iq_matrix->ScalingList8x8[0])); return 0; }