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binkaudio: remove unneeded GET_BITS_SAFE macro 

Normal get_bits() already has overread protection.
This commit is contained in:
Justin Ruggles 2012-09-17 16:20:36 -04:00
parent 7bfd1766d1
commit ee90119e9e
1 changed files with 5 additions and 12 deletions
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17
libavcodec/binkaudio.c
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@ -158,12 +158,6 @@ static const uint8_t rle_length_tab[16] = {
2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 32, 64 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 32, 64
}; };
#define GET_BITS_SAFE(out, nbits) do { \
if (get_bits_left(gb) < nbits) \
return AVERROR_INVALIDDATA; \
out = get_bits(gb, nbits); \
} while (0)
/** /**
* Decode Bink Audio block * Decode Bink Audio block
* @param[out] out Output buffer (must contain s->block_size elements) * @param[out] out Output buffer (must contain s->block_size elements)
@ -210,10 +204,9 @@ static int decode_block(BinkAudioContext *s, float **out, int use_dct)
if (s->version_b) { if (s->version_b) {
j = i + 16; j = i + 16;
} else { } else {
int v; int v = get_bits1(gb);
GET_BITS_SAFE(v, 1);
if (v) { if (v) {
GET_BITS_SAFE(v, 4); v = get_bits(gb, 4);
j = i + rle_length_tab[v] * 8; j = i + rle_length_tab[v] * 8;
} else { } else {
j = i + 8; j = i + 8;
@ -222,7 +215,7 @@ static int decode_block(BinkAudioContext *s, float **out, int use_dct)
j = FFMIN(j, s->frame_len); j = FFMIN(j, s->frame_len);
GET_BITS_SAFE(width, 4); width = get_bits(gb, 4);
if (width == 0) { if (width == 0) {
memset(coeffs + i, 0, (j - i) * sizeof(*coeffs)); memset(coeffs + i, 0, (j - i) * sizeof(*coeffs));
i = j; i = j;
@ -232,10 +225,10 @@ static int decode_block(BinkAudioContext *s, float **out, int use_dct)
while (i < j) { while (i < j) {
if (s->bands[k] == i) if (s->bands[k] == i)
q = quant[k++]; q = quant[k++];
GET_BITS_SAFE(coeff, width); coeff = get_bits(gb, width);
if (coeff) { if (coeff) {
int v; int v;
GET_BITS_SAFE(v, 1); v = get_bits1(gb);
if (v) if (v)
coeffs[i] = -q * coeff; coeffs[i] = -q * coeff;
else else