26 8,7,6,6,5,5,5,5,4,4,4,4,4,4,4,4,
27 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,
28 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
29 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,
30 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
31 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
32 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
33 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
34 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
35 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
36 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
37 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
45 c->
end = buf + buf_size;
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
const uint8_t ff_vp56_norm_shift[256]
vp56 specific range coder implementation
VP5 and VP6 compatible video decoder (common features)
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
int ff_vp56_init_range_decoder(VP56RangeCoder *c, const uint8_t *buf, int buf_size)
common internal and external API header