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vp8: fix per-segment deblocking filter level in relative mode.

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Fix possible bug when a per-segment deblocking filter level value
needs to be set in non-absolute mode, i.e. when the loop filter update
value is negative in delta mode.

Also clamp the resulting filter level value to 0..63 range.
This commit is contained in:
Gwenole Beauchesne 2014-04-22 19:53:50 +02:00
parent 01c78c4b20
commit f2b0d02168
1 changed files with 6 additions and 4 deletions
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10
gst-libs/gst/vaapi/gstvaapidecoder_vp8.c
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@ -315,12 +315,14 @@ fill_picture (GstVaapiDecoderVp8 * decoder, GstVaapiPicture * picture)
pic_param->mb_segment_tree_probs[i] = seg->segment_prob[i];
for (i = 0; i < 4; i++) {
gint8 level;
if (seg->segmentation_enabled) {
pic_param->loop_filter_level[i] = seg->lf_update_value[i];
if (!seg->segment_feature_mode)
pic_param->loop_filter_level[i] += frame_hdr->loop_filter_level;
level = seg->lf_update_value[i];
if (!seg->segment_feature_mode) // 0 means delta update
level += frame_hdr->loop_filter_level;
} else
pic_param->loop_filter_level[i] = frame_hdr->loop_filter_level;
level = frame_hdr->loop_filter_level;
pic_param->loop_filter_level[i] = CLAMP (level, 0, 63);
pic_param->loop_filter_deltas_ref_frame[i] =
parser->mb_lf_adjust.ref_frame_delta[i];