avcodec/rangecoder: Avoid checking for the first byte on every renormalization

Michael Niedermayer committed 2 years ago

Commit 70fa8bd1 parent 83264991 file · +3 −4Browse files

Showing the changes to libavcodec (1 of 1 file). Show all

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 static inline void renorm_encoder(RangeCoder *c)
 {
     // FIXME: optimize
-        if (c->outstanding_byte < 0) {
+        if (c->low <= 0xFF00) {
-            c->outstanding_byte = c->low >> 8;
+            *c->bytestream = c->outstanding_byte;
-        } else if (c->low <= 0xFF00) {
+            c->bytestream += c->outstanding_byte >= 0;
-            *c->bytestream++ = c->outstanding_byte;
             for (; c->outstanding_count; c->outstanding_count--)
                 *c->bytestream++ = 0xFF;
             c->outstanding_byte = c->low >> 8;

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