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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libavcodec/rangecoder.h+3−4

@@ -62,10 +62,9 @@ void ff_build_rac_states(RangeCoder *c, int factor, int max_p); · 61 unmodified lines
62	62	static inline void renorm_encoder(RangeCoder *c)
63	63	{
64	64	// FIXME: optimize
65		− if (c->outstanding_byte < 0) {
66		− c->outstanding_byte = c->low >> 8;
67		− } else if (c->low <= 0xFF00) {
68		− *c->bytestream++ = c->outstanding_byte;
	65	+ if (c->low <= 0xFF00) {
	66	+ *c->bytestream = c->outstanding_byte;
	67	+ c->bytestream += c->outstanding_byte >= 0;
69	68	for (; c->outstanding_count; c->outstanding_count--)
70	69	*c->bytestream++ = 0xFF;
71	70	c->outstanding_byte = c->low >> 8;