This is simpler and avoids an invalid shift by 32 in the
aligned case.
Signed-off-by: Mans Rullgard <[email protected]>
---
libavcodec/cook.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/libavcodec/cook.c b/libavcodec/cook.c
index 5a3822d..47809e5 100644
--- a/libavcodec/cook.c
+++ b/libavcodec/cook.c
@@ -273,6 +273,10 @@ static av_cold void init_cplscales_table (COOKContext *q) {
*/
static inline int decode_bytes(const uint8_t* inbuffer, uint8_t* out, int
bytes){
+ static const uint32_t tab[4] = {
+ AV_BE2NE32C(0x37c511f2), AV_BE2NE32C(0xf237c511),
+ AV_BE2NE32C(0x11f237c5), AV_BE2NE32C(0xc511f237),
+ };
int i, off;
uint32_t c;
const uint32_t* buf;
@@ -285,7 +289,7 @@ static inline int decode_bytes(const uint8_t* inbuffer,
uint8_t* out, int bytes)
off = (intptr_t)inbuffer & 3;
buf = (const uint32_t*) (inbuffer - off);
- c = av_be2ne32((0x37c511f2 >> (off*8)) | (0x37c511f2 << (32-(off*8))));
+ c = tab[off];
bytes += 3 + off;
for (i = 0; i < bytes/4; i++)
obuf[i] = c ^ buf[i];
--
1.7.7.4
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