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[libpng16] Changed chunk handler warnings into benign errors, incrementally

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load iCCP
This commit is contained in:
John Bowler
2012-03-21 07:55:46 -05:00
committed by Glenn Randers-Pehrson
parent 51624965e2
commit b11b31aea2
20 changed files with 1914 additions and 1065 deletions
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71
pngwrite.c
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@@ -28,7 +28,7 @@
* them in png_write_end(), and compressing them.
*/
void PNGAPI
png_write_info_before_PLTE(png_structrp png_ptr, png_inforp info_ptr)
png_write_info_before_PLTE(png_structrp png_ptr, png_const_inforp info_ptr)
{
png_debug(1, "in png_write_info_before_PLTE");
@@ -60,32 +60,61 @@ png_write_info_before_PLTE(png_structrp png_ptr, png_inforp info_ptr)
#endif
/* The rest of these check to see if the valid field has the appropriate
* flag set, and if it does, writes the chunk.
*
* 1.6.0: COLORSPACE support controls the writing of these chunks too, and
* the chunks will be written if the WRITE routine is there and information
* is available in the COLORSPACE. (See png_colorspace_sync_info in png.c
* for where the valid flags get set.)
*
* Under certain circumstances the colorspace can be invalidated without
* syncing the info_struct 'valid' flags; this happens if libpng detects and
* error and calls png_error while the color space is being set, yet the
* application continues writing the PNG. So check the 'invalid' flag here
* too.
*/
#ifdef PNG_WRITE_gAMA_SUPPORTED
if (info_ptr->valid & PNG_INFO_gAMA)
png_write_gAMA_fixed(png_ptr, info_ptr->gamma);
#endif
#ifdef PNG_WRITE_sRGB_SUPPORTED
if (info_ptr->valid & PNG_INFO_sRGB)
png_write_sRGB(png_ptr, (int)info_ptr->srgb_intent);
#ifdef PNG_GAMMA_SUPPORTED
# ifdef PNG_WRITE_gAMA_SUPPORTED
if (!(info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) &&
(info_ptr->colorspace.flags & PNG_COLORSPACE_FROM_gAMA) &&
(info_ptr->valid & PNG_INFO_gAMA))
png_write_gAMA_fixed(png_ptr, info_ptr->colorspace.gamma);
# endif
#endif
#ifdef PNG_WRITE_iCCP_SUPPORTED
if (info_ptr->valid & PNG_INFO_iCCP)
png_write_iCCP(png_ptr, info_ptr->iccp_name, PNG_COMPRESSION_TYPE_BASE,
info_ptr->iccp_profile, info_ptr->iccp_proflen);
#endif
#ifdef PNG_COLORSPACE_SUPPORTED
/* Write only one of sRGB or an ICC profile, favour sRGB if the profile
* matches sRGB.
*/
# ifdef PNG_WRITE_sRGB_SUPPORTED
if (!(info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) &&
(info_ptr->valid & PNG_INFO_sRGB))
png_write_sRGB(png_ptr, info_ptr->colorspace.rendering_intent);
# ifdef PNG_WRITE_iCCP_SUPPORTED
else
# endif
# endif /* WRITE_sRGB */
# ifdef PNG_WRITE_iCCP_SUPPORTED
if (!(info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) &&
(info_ptr->valid & PNG_INFO_iCCP))
png_write_iCCP(png_ptr, info_ptr->iccp_name,
info_ptr->iccp_profile);
# endif
#endif /* COLORSPACE */
#ifdef PNG_WRITE_sBIT_SUPPORTED
if (info_ptr->valid & PNG_INFO_sBIT)
png_write_sBIT(png_ptr, &(info_ptr->sig_bit), info_ptr->color_type);
#endif
#ifdef PNG_WRITE_cHRM_SUPPORTED
if (info_ptr->valid & PNG_INFO_cHRM)
png_write_cHRM_fixed(png_ptr,
info_ptr->x_white, info_ptr->y_white,
info_ptr->x_red, info_ptr->y_red,
info_ptr->x_green, info_ptr->y_green,
info_ptr->x_blue, info_ptr->y_blue);
#ifdef PNG_COLORSPACE_SUPPORTED
# ifdef PNG_WRITE_cHRM_SUPPORTED
if (!(info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) &&
(info_ptr->colorspace.flags & PNG_COLORSPACE_FROM_cHRM) &&
(info_ptr->valid & PNG_INFO_cHRM))
png_write_cHRM_fixed(png_ptr, &info_ptr->colorspace.end_points_xy);
# endif
#endif
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
@@ -122,7 +151,7 @@ png_write_info_before_PLTE(png_structrp png_ptr, png_inforp info_ptr)
}
void PNGAPI
png_write_info(png_structrp png_ptr, png_inforp info_ptr)
png_write_info(png_structrp png_ptr, png_const_inforp info_ptr)
{
#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)
int i;