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rtjpeg: simplify get_block() by using get_bits_left.

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Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Reimar Döffinger 2011-11-05 22:07:22 +01:00 committed by Anton Khirnov
parent 7a62ddb689
commit 7fb55e0b02
1 changed files with 3 additions and 3 deletions
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6
libavcodec/rtjpeg.c
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@ -56,7 +56,7 @@ static inline int get_block(GetBitContext *gb, DCTELEM *block, const uint8_t *sc
// number of non-zero coefficients // number of non-zero coefficients
coeff = get_bits(gb, 6); coeff = get_bits(gb, 6);
if (get_bits_count(gb) + (coeff << 1) >= gb->size_in_bits) if (get_bits_left(gb) < (coeff << 1))
return -1; return -1;
// normally we would only need to clear the (63 - coeff) last values, // normally we would only need to clear the (63 - coeff) last values,
@ -73,7 +73,7 @@ static inline int get_block(GetBitContext *gb, DCTELEM *block, const uint8_t *sc
// 4 bits per coefficient // 4 bits per coefficient
ALIGN(4); ALIGN(4);
if (get_bits_count(gb) + (coeff << 2) >= gb->size_in_bits) if (get_bits_left(gb) < (coeff << 2))
return -1; return -1;
while (coeff) { while (coeff) {
ac = get_sbits(gb, 4); ac = get_sbits(gb, 4);
@ -84,7 +84,7 @@ static inline int get_block(GetBitContext *gb, DCTELEM *block, const uint8_t *sc
// 8 bits per coefficient // 8 bits per coefficient
ALIGN(8); ALIGN(8);
if (get_bits_count(gb) + (coeff << 3) >= gb->size_in_bits) if (get_bits_left(gb) < (coeff << 3))
return -1; return -1;
while (coeff) { while (coeff) {
ac = get_sbits(gb, 8); ac = get_sbits(gb, 8);