static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size) { Mpeg4DecContext *ctx = avctx->priv_data; MpegEncContext * const s = &ctx->m; struct vaapi_context * const vactx = avctx->hwaccel_context; VAPictureParameterBufferMPEG4 *pic_param; VAIQMatrixBufferMPEG4 *iq_matrix; int i; av_dlog(avctx, "vaapi_mpeg4_start_frame()\n"); vactx->slice_param_size = sizeof(VASliceParameterBufferMPEG4); /* Fill in VAPictureParameterBufferMPEG4 */ pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferMPEG4)); if (!pic_param) return -1; pic_param->vop_width = s->width; pic_param->vop_height = s->height; pic_param->forward_reference_picture = VA_INVALID_ID; pic_param->backward_reference_picture = VA_INVALID_ID; pic_param->vol_fields.value = 0; /* reset all bits */ pic_param->vol_fields.bits.short_video_header = avctx->codec->id == AV_CODEC_ID_H263; pic_param->vol_fields.bits.chroma_format = CHROMA_420; pic_param->vol_fields.bits.interlaced = !s->progressive_sequence; pic_param->vol_fields.bits.obmc_disable = 1; pic_param->vol_fields.bits.sprite_enable = ctx->vol_sprite_usage; pic_param->vol_fields.bits.sprite_warping_accuracy = s->sprite_warping_accuracy; pic_param->vol_fields.bits.quant_type = s->mpeg_quant; pic_param->vol_fields.bits.quarter_sample = s->quarter_sample; pic_param->vol_fields.bits.data_partitioned = s->data_partitioning; pic_param->vol_fields.bits.reversible_vlc = ctx->rvlc; pic_param->vol_fields.bits.resync_marker_disable = !ctx->resync_marker; pic_param->no_of_sprite_warping_points = ctx->num_sprite_warping_points; for (i = 0; i < ctx->num_sprite_warping_points && i < 3; i++) { pic_param->sprite_trajectory_du[i] = ctx->sprite_traj[i][0]; pic_param->sprite_trajectory_dv[i] = ctx->sprite_traj[i][1]; } pic_param->quant_precision = s->quant_precision; pic_param->vop_fields.value = 0; /* reset all bits */ pic_param->vop_fields.bits.vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I; pic_param->vop_fields.bits.backward_reference_vop_coding_type = s->pict_type == AV_PICTURE_TYPE_B ? s->next_picture.f.pict_type - AV_PICTURE_TYPE_I : 0; pic_param->vop_fields.bits.vop_rounding_type = s->no_rounding; pic_param->vop_fields.bits.intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(ctx); pic_param->vop_fields.bits.top_field_first = s->top_field_first; pic_param->vop_fields.bits.alternate_vertical_scan_flag = s->alternate_scan; pic_param->vop_fcode_forward = s->f_code; pic_param->vop_fcode_backward = s->b_code; pic_param->vop_time_increment_resolution = avctx->time_base.den; pic_param->num_macroblocks_in_gob = s->mb_width * ff_h263_get_gob_height(s); pic_param->num_gobs_in_vop = (s->mb_width * s->mb_height) / pic_param->num_macroblocks_in_gob; pic_param->TRB = s->pb_time; pic_param->TRD = s->pp_time; if (s->pict_type == AV_PICTURE_TYPE_B) pic_param->backward_reference_picture = ff_vaapi_get_surface_id(&s->next_picture.f); if (s->pict_type != AV_PICTURE_TYPE_I) pic_param->forward_reference_picture = ff_vaapi_get_surface_id(&s->last_picture.f); /* Fill in VAIQMatrixBufferMPEG4 */ /* Only the first inverse quantisation method uses the weighting matrices */ if (pic_param->vol_fields.bits.quant_type) { iq_matrix = ff_vaapi_alloc_iq_matrix(vactx, sizeof(VAIQMatrixBufferMPEG4)); if (!iq_matrix) return -1; iq_matrix->load_intra_quant_mat = 1; iq_matrix->load_non_intra_quant_mat = 1; for (i = 0; i < 64; i++) { int n = s->dsp.idct_permutation[ff_zigzag_direct[i]]; iq_matrix->intra_quant_mat[i] = s->intra_matrix[n]; iq_matrix->non_intra_quant_mat[i] = s->inter_matrix[n]; } } return 0; }