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Bug 745202 - Disable palette-index-checking when using the system PNG decoder. r=joe

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This commit is contained in:
Glenn Randers-Pehrson 2012-07-23 20:02:20 -04:00
parent 307dfc4aa8
commit 2ef4856415
1 changed files with 12 additions and 0 deletions
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12
image/decoders/nsPNGDecoder.cpp
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@ -249,6 +249,18 @@ nsPNGDecoder::InitInternal()
png_set_chunk_malloc_max(mPNG, 4000000L);
#endif
#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
#ifndef PR_LOGGING
/* Disallow palette-index checking, for speed; we would ignore the warning
* anyhow unless we have defined PR_LOGGING. This feature was added at
* libpng version 1.5.10 and is disabled in the embedded libpng but enabled
* by default in the system libpng. This call also disables it in the
* system libpng, for decoding speed. Bug #745202.
*/
png_set_check_for_invalid_index(mPNG, 0);
#endif
#endif
/* use this as libpng "progressive pointer" (retrieve in callbacks) */
png_set_progressive_read_fn(mPNG, static_cast<png_voidp>(this),
nsPNGDecoder::info_callback,