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fix endian problems in pattern copy

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CopyBlock8b() was over-using memcpy() of 16b values.

BUG=webp:393,webp:512

Change-Id: Id56f10d334b9a453fbcf50dabfaa63529bcff7e5
(cherry picked from commit 211f37ee63)
(cherry picked from commit 667d17a8a4)
This commit is contained in:
Pascal Massimino 2018-07-09 17:33:44 -07:00 committed by James Zern
parent b5e0b231c1
commit 641fbb5e89
1 changed files with 4 additions and 0 deletions
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4
src/dec/vp8l_dec.c
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@ -884,7 +884,11 @@ static WEBP_INLINE void CopyBlock8b(uint8_t* const dst, int dist, int length) {
#endif #endif
break; break;
case 2: case 2:
#if !defined(WORDS_BIGENDIAN)
memcpy(&pattern, src, sizeof(uint16_t)); memcpy(&pattern, src, sizeof(uint16_t));
#else
pattern = ((uint32_t)src[0] << 8) | src[1];
#endif
#if defined(__arm__) || defined(_M_ARM) #if defined(__arm__) || defined(_M_ARM)
pattern |= pattern << 16; pattern |= pattern << 16;
#elif defined(WEBP_USE_MIPS_DSP_R2) #elif defined(WEBP_USE_MIPS_DSP_R2)