static int vdpau_mpeg4_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size) { Mpeg4DecContext *ctx = avctx->priv_data; MpegEncContext * const s = &ctx->m; Picture *pic = s->current_picture_ptr; struct vdpau_picture_context *pic_ctx = pic->hwaccel_picture_private; VdpPictureInfoMPEG4Part2 *info = &pic_ctx->info.mpeg4; VdpVideoSurface ref; int i; /* fill VdpPictureInfoMPEG4Part2 struct */ info->forward_reference = VDP_INVALID_HANDLE; info->backward_reference = VDP_INVALID_HANDLE; info->vop_coding_type = 0; switch (s->pict_type) { case AV_PICTURE_TYPE_B: ref = ff_vdpau_get_surface_id(&s->next_picture.f); assert(ref != VDP_INVALID_HANDLE); info->backward_reference = ref; info->vop_coding_type = 2; /* fall-through */ case AV_PICTURE_TYPE_P: ref = ff_vdpau_get_surface_id(&s->last_picture.f); assert(ref != VDP_INVALID_HANDLE); info->forward_reference = ref; } info->trd[0] = s->pp_time; info->trb[0] = s->pb_time; info->trd[1] = s->pp_field_time >> 1; info->trb[1] = s->pb_field_time >> 1; info->vop_time_increment_resolution = s->avctx->time_base.den; info->vop_fcode_forward = s->f_code; info->vop_fcode_backward = s->b_code; info->resync_marker_disable = !ctx->resync_marker; info->interlaced = !s->progressive_sequence; info->quant_type = s->mpeg_quant; info->quarter_sample = s->quarter_sample; info->short_video_header = avctx->codec->id == AV_CODEC_ID_H263; info->rounding_control = s->no_rounding; info->alternate_vertical_scan_flag = s->alternate_scan; info->top_field_first = s->top_field_first; for (i = 0; i < 64; ++i) { info->intra_quantizer_matrix[i] = s->intra_matrix[i]; info->non_intra_quantizer_matrix[i] = s->inter_matrix[i]; } ff_vdpau_common_start_frame(pic_ctx, buffer, size); return ff_vdpau_add_buffer(pic_ctx, buffer, size); }