On 26/11/11 18:07, Måns Rullgård wrote:
Kostya Shishkov<[email protected]> writes:
On Sat, Nov 26, 2011 at 04:52:09PM +0000, Mans Rullgard wrote:
Signed-off-by: Mans Rullgard<[email protected]>
---
libavcodec/svq1dec.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/libavcodec/svq1dec.c b/libavcodec/svq1dec.c
index 8569615..7eb6e60 100644
--- a/libavcodec/svq1dec.c
+++ b/libavcodec/svq1dec.c
@@ -195,7 +195,8 @@ static const uint8_t string_table[256] = {
#define SVQ1_CALC_CODEBOOK_ENTRIES(cbook)\
codebook = (const uint32_t *) cbook[level];\
- bit_cache = get_bits (bitbuf, 4*stages);\
+ if (stages> 0)\
+ bit_cache = get_bits (bitbuf, 4*stages);\
/* calculate codebook entries for this vector */\
for (j=0; j< stages; j++) {\
entries[j] = (((bit_cache>> (4*(stages - j - 1)))& 0xF) + 16*j)<<
(level + 1);\
--
maybe set it to 0 for zero bits?
That would add overhead in cases where it's impossible for it to be
zero, which should be everywhere.
Assuming it's true, patch ok.
--
Luca Barbato
Gentoo/linux
http://dev.gentoo.org/~lu_zero
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