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vp8: fix update_lf_deltas in libavcodec/vp8.c

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lf_delta.ref[i] and lf_delta.mode[i] were incorrectly reset to 0 if
specific delta value was not updated. Fixed to keep the previous value
if flag indicates that element in question is not updated.

Signed-off-by: Janne Salonen <jsalonen@google.com>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Janne Salonen 2012-03-19 09:35:09 +02:00 committed by Ronald S. Bultje
parent 494bce6224
commit 14ba7472dc
1 changed files with 16 additions and 4 deletions
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20
libavcodec/vp8.c
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@ -162,11 +162,23 @@ static void update_lf_deltas(VP8Context *s)
VP56RangeCoder *c = &s->c;
int i;
for (i = 0; i < 4; i++)
s->lf_delta.ref[i] = vp8_rac_get_sint(c, 6);
for (i = 0; i < 4; i++) {
if (vp8_rac_get(c)) {
s->lf_delta.ref[i] = vp8_rac_get_uint(c, 6);
for (i = MODE_I4x4; i <= VP8_MVMODE_SPLIT; i++)
s->lf_delta.mode[i] = vp8_rac_get_sint(c, 6);
if (vp8_rac_get(c))
s->lf_delta.ref[i] = -s->lf_delta.ref[i];
}
}
for (i = MODE_I4x4; i <= VP8_MVMODE_SPLIT; i++) {
if (vp8_rac_get(c)) {
s->lf_delta.mode[i] = vp8_rac_get_uint(c, 6);
if (vp8_rac_get(c))
s->lf_delta.mode[i] = -s->lf_delta.mode[i];
}
}
}
static int setup_partitions(VP8Context *s, const uint8_t *buf, int buf_size)