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[devel] Corrected const_png_ in png.h to png_const_ to avoid polluting

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the namespace.  Added png_get_current_row_number and
 png_get_current_pass_number for the
 benefit of the user transform callback.
 Added png_process_data_pause and png_process_data_skip for the benefit of
 progressive readers that need to stop data processing or want to optimize
 skipping of unread data (e.g. if the reader marks a chunk to be skipped.)
This commit is contained in:
John Bowler
2011-01-22 17:36:34 -06:00
committed by Glenn Randers-Pehrson
parent 155ce40218
commit 0a5c9c02fa
14 changed files with 386 additions and 231 deletions
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8
png.c
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@@ -547,7 +547,7 @@ png_convert_to_rfc1123(png_structp png_ptr, png_const_timep ptime)
#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
png_const_charp PNGAPI
png_get_copyright(const_png_structp png_ptr)
png_get_copyright(png_const_structp png_ptr)
{
PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
#ifdef PNG_STRING_COPYRIGHT
@@ -578,14 +578,14 @@ png_get_copyright(const_png_structp png_ptr)
* it is guaranteed that png.c uses the correct version of png.h.
*/
png_const_charp PNGAPI
png_get_libpng_ver(const_png_structp png_ptr)
png_get_libpng_ver(png_const_structp png_ptr)
{
/* Version of *.c files used when building libpng */
return png_get_header_ver(png_ptr);
}
png_const_charp PNGAPI
png_get_header_ver(const_png_structp png_ptr)
png_get_header_ver(png_const_structp png_ptr)
{
/* Version of *.h files used when building libpng */
PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
@@ -593,7 +593,7 @@ png_get_header_ver(const_png_structp png_ptr)
}
png_const_charp PNGAPI
png_get_header_version(const_png_structp png_ptr)
png_get_header_version(png_const_structp png_ptr)
{
/* Returns longer string containing both version and date */
PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */