Signed-off-by: Michael Niedermayer <[email protected]>
---
libavcodec/rangecoder.h | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/libavcodec/rangecoder.h b/libavcodec/rangecoder.h
index cdd99eff565..15217a99a3c 100644
--- a/libavcodec/rangecoder.h
+++ b/libavcodec/rangecoder.h
@@ -61,17 +61,12 @@ void ff_build_rac_states(RangeCoder *c, int factor, int
max_p);
static inline void renorm_encoder(RangeCoder *c)
{
- // FIXME: optimize
- if (c->low <= 0xFF00) {
- *c->bytestream = c->outstanding_byte;
+ if (c->low - 0xFF01 >= 0x10000 - 0xFF01U) {
+ int mask = c->low - 0xFF01 >> 31;
+ *c->bytestream = c->outstanding_byte + 1 + mask;
c->bytestream += c->outstanding_byte >= 0;
for (; c->outstanding_count; c->outstanding_count--)
- *c->bytestream++ = 0xFF;
- c->outstanding_byte = c->low >> 8;
- } else if (c->low >= 0x10000) {
- *c->bytestream++ = c->outstanding_byte + 1;
- for (; c->outstanding_count; c->outstanding_count--)
- *c->bytestream++ = 0x00;
+ *c->bytestream++ = mask;
c->outstanding_byte = c->low >> 8;
} else {
c->outstanding_count++;
--
2.47.0
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