sergiotarxz/libvips
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revise png comments

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This commit is contained in:
John Cupitt 2020-02-07 17:53:42 +00:00
parent f866799474
commit 9e6df7e0a6
1 changed files with 10 additions and 6 deletions
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16
libvips/foreign/vipspng.c
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@ -276,16 +276,18 @@ read_new( VipsSource *source, VipsImage *out, gboolean fail )
user_error_function, user_warning_function )) )
return( NULL );
#ifdef PNG_SKIP_sRGB_CHECK_PROFILE
/* Prevent libpng (>=1.6.11) verifying sRGB profiles.
/* Prevent libpng (>=1.6.11) verifying sRGB profiles. Many PNGs have
* broken profiles, but we still want to be able to open them.
*/
#ifdef PNG_SKIP_sRGB_CHECK_PROFILE
png_set_option( read->pPng,
PNG_SKIP_sRGB_CHECK_PROFILE, PNG_OPTION_ON );
#endif /*PNG_SKIP_sRGB_CHECK_PROFILE*/
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
/* Disable CRC checking in fuzzing mode.
/* Disable CRC checking in fuzzing mode. Most fuzzed images will have
* bad CRCs so this check would break fuzzing.
*/
#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
png_set_crc_action( read->pPng,
PNG_CRC_QUIET_USE, PNG_CRC_QUIET_USE );
#endif /*FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION*/
@ -813,9 +815,11 @@ write_new( VipsImage *in, VipsTarget *target )
return( NULL );
}
#ifdef PNG_SKIP_sRGB_CHECK_PROFILE
/* Prevent libpng (>=1.6.11) verifying sRGB profiles.
/* Prevent libpng (>=1.6.11) verifying sRGB profiles. We are often
* asked to copy images containing bad profiles, and this check would
* prevent that.
*/
#ifdef PNG_SKIP_sRGB_CHECK_PROFILE
png_set_option( write->pPng,
PNG_SKIP_sRGB_CHECK_PROFILE, PNG_OPTION_ON );
#endif /*PNG_SKIP_sRGB_CHECK_PROFILE*/