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;
FFVAContext * const vactx = ff_vaapi_get_context(avctx);
VAPictureParameterBufferMPEG4 *pic_param;
VAIQMatrixBufferMPEG4 *iq_matrix;
int i;
ff_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->framerate.num;
pic_param->num_macroblocks_in_gob = s->mb_width * H263_GOB_HEIGHT(s->height);
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->idsp.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;
}
},
.no_of_sprite_warping_points = ctx->num_sprite_warping_points,
.quant_precision = s->quant_precision,
.vop_fields.bits = {
.vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I,
.backward_reference_vop_coding_type =
s->pict_type == AV_PICTURE_TYPE_B ? s->next_picture.f->pict_type - AV_PICTURE_TYPE_I : 0,
.vop_rounding_type = s->no_rounding,
.intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(ctx),
.top_field_first = s->top_field_first,
.alternate_vertical_scan_flag = s->alternate_scan,
},
.vop_fcode_forward = s->f_code,
.vop_fcode_backward = s->b_code,
.vop_time_increment_resolution = avctx->framerate.num,
.num_macroblocks_in_gob = s->mb_width * H263_GOB_HEIGHT(s->height),
.num_gobs_in_vop =
(s->mb_width * s->mb_height) / (s->mb_width * H263_GOB_HEIGHT(s->height)),
.TRB = s->pb_time,
.TRD = s->pp_time,
};
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];
}
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);
