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Code Issues Releases Activity

indeo4: apply correction to eob/esc indexes too

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2012-03-28 14:52:27 +02:00
parent 92f7f1db42
commit a74d721876
1 changed files with 8 additions and 0 deletions
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8
libavcodec/indeo4.c
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@@ -631,6 +631,10 @@ static int decode_band(IVI4DecContext *ctx, int plane_num,
idx2 = band->corr[i * 2 + 1]; idx2 = band->corr[i * 2 + 1];
FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]); FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);
FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]); FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);
if (idx1 == band->rv_map->eob_sym || idx2 == band->rv_map->eob_sym)
band->rv_map->eob_sym ^= idx1 ^ idx2;
if (idx1 == band->rv_map->esc_sym || idx2 == band->rv_map->esc_sym)
band->rv_map->esc_sym ^= idx1 ^ idx2;
} }
pos = get_bits_count(&ctx->gb); pos = get_bits_count(&ctx->gb);
@@ -670,6 +674,10 @@ static int decode_band(IVI4DecContext *ctx, int plane_num,
idx2 = band->corr[i * 2 + 1]; idx2 = band->corr[i * 2 + 1];
FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]); FFSWAP(uint8_t, band->rv_map->runtab[idx1], band->rv_map->runtab[idx2]);
FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]); FFSWAP(int16_t, band->rv_map->valtab[idx1], band->rv_map->valtab[idx2]);
if (idx1 == band->rv_map->eob_sym || idx2 == band->rv_map->eob_sym)
band->rv_map->eob_sym ^= idx1 ^ idx2;
if (idx1 == band->rv_map->esc_sym || idx2 == band->rv_map->esc_sym)
band->rv_map->esc_sym ^= idx1 ^ idx2;
} }
#if defined(DEBUG) && IVI4_DEBUG_CHECKSUM #if defined(DEBUG) && IVI4_DEBUG_CHECKSUM