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[libpng16] Removed png_get_signature() and info_ptr->signature from WRITE-only

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builds.  Restored png_get_channels() to WRITE-only builds.
This commit is contained in:
Glenn Randers-Pehrson 2012-08-10 07:49:44 -05:00
parent 8d3453a22d
commit 5d1df4fdf4
3 changed files with 4 additions and 3 deletions
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2
png.h
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@ -2008,11 +2008,9 @@ PNG_EXPORT(113, void, png_set_rows, (png_const_structrp png_ptr,
png_inforp info_ptr, png_bytepp row_pointers)); png_inforp info_ptr, png_bytepp row_pointers));
#endif #endif
#ifdef PNG_READ_SUPPORTED
/* Returns number of color channels in image. */ /* Returns number of color channels in image. */
PNG_EXPORT(114, png_byte, png_get_channels, (png_const_structrp png_ptr, PNG_EXPORT(114, png_byte, png_get_channels, (png_const_structrp png_ptr,
png_const_inforp info_ptr)); png_const_inforp info_ptr));
#endif
#ifdef PNG_EASY_ACCESS_SUPPORTED #ifdef PNG_EASY_ACCESS_SUPPORTED
/* Returns image width in pixels. */ /* Returns image width in pixels. */

2
pngget.c
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@ -423,7 +423,6 @@ png_get_pHYs_dpi(png_const_structrp png_ptr, png_const_inforp info_ptr,
#endif /* PNG_EASY_ACCESS_SUPPORTED */ #endif /* PNG_EASY_ACCESS_SUPPORTED */
#ifdef PNG_READ_SUPPORTED
png_byte PNGAPI png_byte PNGAPI
png_get_channels(png_const_structrp png_ptr, png_const_inforp info_ptr) png_get_channels(png_const_structrp png_ptr, png_const_inforp info_ptr)
{ {
@ -433,6 +432,7 @@ png_get_channels(png_const_structrp png_ptr, png_const_inforp info_ptr)
return (0); return (0);
} }
#ifdef PNG_READ_SUPPORTED
png_const_bytep PNGAPI png_const_bytep PNGAPI
png_get_signature(png_const_structrp png_ptr, png_const_inforp info_ptr) png_get_signature(png_const_structrp png_ptr, png_const_inforp info_ptr)
{ {

3
pnginfo.h
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@ -73,7 +73,10 @@ struct png_info_def
png_byte channels; /* number of data channels per pixel (1, 2, 3, 4) */ png_byte channels; /* number of data channels per pixel (1, 2, 3, 4) */
png_byte pixel_depth; /* number of bits per pixel */ png_byte pixel_depth; /* number of bits per pixel */
png_byte spare_byte; /* to align the data, and for future use */ png_byte spare_byte; /* to align the data, and for future use */
#ifdef PNG_READ_SUPPORTED
png_byte signature[8]; /* magic bytes read by libpng from start of file */ png_byte signature[8]; /* magic bytes read by libpng from start of file */
#endif
/* The rest of the data is optional. If you are reading, check the /* The rest of the data is optional. If you are reading, check the
* valid field to see if the information in these are valid. If you * valid field to see if the information in these are valid. If you