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stb_vorbis: fix unused functions

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Ronny Chevalier 2014-07-17 14:49:48 +02:00 committed by Sean Barrett
parent b8b6e7c31a
commit 758c165d2c
1 changed files with 17 additions and 25 deletions
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42
stb_vorbis.c
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@ -1548,14 +1548,6 @@ static uint32 get_bits(vorb *f, int n)
return z;
}
static int32 get_bits_signed(vorb *f, int n)
{
uint32 z = get_bits(f, n);
if (z & (1 << (n-1)))
z += ~((1 << n) - 1);
return (int32) z;
}
// @OPTIMIZE: primary accumulator for huffman
// expand the buffer to as many bits as possible without reading off end of packet
// it might be nice to allow f->valid_bits and f->acc to be stored in registers,
@ -1639,23 +1631,6 @@ static int codebook_decode_scalar_raw(vorb *f, Codebook *c)
return -1;
}
static int codebook_decode_scalar(vorb *f, Codebook *c)
{
int i;
if (f->valid_bits < STB_VORBIS_FAST_HUFFMAN_LENGTH)
prep_huffman(f);
// fast huffman table lookup
i = f->acc & FAST_HUFFMAN_TABLE_MASK;
i = c->fast_huffman[i];
if (i >= 0) {
f->acc >>= c->codeword_lengths[i];
f->valid_bits -= c->codeword_lengths[i];
if (f->valid_bits < 0) { f->valid_bits = 0; return -1; }
return i;
}
return codebook_decode_scalar_raw(f,c);
}
#ifndef STB_VORBIS_NO_INLINE_DECODE
#define DECODE_RAW(var, f,c) \
@ -1674,6 +1649,23 @@ static int codebook_decode_scalar(vorb *f, Codebook *c)
#else
static int codebook_decode_scalar(vorb *f, Codebook *c)
{
int i;
if (f->valid_bits < STB_VORBIS_FAST_HUFFMAN_LENGTH)
prep_huffman(f);
// fast huffman table lookup
i = f->acc & FAST_HUFFMAN_TABLE_MASK;
i = c->fast_huffman[i];
if (i >= 0) {
f->acc >>= c->codeword_lengths[i];
f->valid_bits -= c->codeword_lengths[i];
if (f->valid_bits < 0) { f->valid_bits = 0; return -1; }
return i;
}
return codebook_decode_scalar_raw(f,c);
}
#define DECODE_RAW(var,f,c) var = codebook_decode_scalar(f,c);
#endif