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h264: move initing the implicit pred weight table out of h264_slice_header_parse()

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It depends on the reference list, so this will allow moving out the
reference list construction and consequently other code it depends on.
This commit is contained in:
Anton Khirnov 2016-04-14 20:53:59 +02:00
parent ed9a20ebe4
commit 0bad254300
1 changed files with 14 additions and 14 deletions
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28
libavcodec/h264_slice.c
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@ -1352,25 +1352,16 @@ static int h264_slice_header_parse(H264Context *h, H264SliceContext *sl)
return ret;
}
sl->pwt.use_weight = 0;
for (i = 0; i < 2; i++) {
sl->pwt.luma_weight_flag[i] = 0;
sl->pwt.chroma_weight_flag[i] = 0;
}
if ((pps->weighted_pred && sl->slice_type_nos == AV_PICTURE_TYPE_P) ||
(pps->weighted_bipred_idc == 1 &&
sl->slice_type_nos == AV_PICTURE_TYPE_B))
ff_h264_pred_weight_table(&sl->gb, sps, sl->ref_count,
sl->slice_type_nos, &sl->pwt);
else if (pps->weighted_bipred_idc == 2 &&
sl->slice_type_nos == AV_PICTURE_TYPE_B) {
implicit_weight_table(h, sl, -1);
if (FRAME_MBAFF(h)) {
implicit_weight_table(h, sl, 0);
implicit_weight_table(h, sl, 1);
}
} else {
sl->pwt.use_weight = 0;
for (i = 0; i < 2; i++) {
sl->pwt.luma_weight_flag[i] = 0;
sl->pwt.chroma_weight_flag[i] = 0;
}
}
// If frame-mt is enabled, only update mmco tables for the first slice
// in a field. Subsequent slices can temporarily clobber h->mmco_index
@ -1458,6 +1449,15 @@ int ff_h264_decode_slice_header(H264Context *h, H264SliceContext *sl)
if (ret < 0)
return ret;
if (h->ps.pps->weighted_bipred_idc == 2 &&
sl->slice_type_nos == AV_PICTURE_TYPE_B) {
implicit_weight_table(h, sl, -1);
if (FRAME_MBAFF(h)) {
implicit_weight_table(h, sl, 0);
implicit_weight_table(h, sl, 1);
}
}
if (sl->slice_type_nos == AV_PICTURE_TYPE_B && !sl->direct_spatial_mv_pred)
ff_h264_direct_dist_scale_factor(h, sl);
ff_h264_direct_ref_list_init(h, sl);