/* pngtrans.c - transforms the data in a row (used by both readers and writers)
*
- * Last changed in libpng 1.2.17 May 15, 2007
+ * Last changed in libpng 1.2.30 [August 15, 2008]
* For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*/
#define PNG_INTERNAL
#include "png.h"
-
#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
+
#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
/* turn on BGR-to-RGB mapping */
void PNGAPI
png_set_bgr(png_structp png_ptr)
{
- png_debug(1, "in png_set_bgr\n");
- if(png_ptr == NULL) return;
+ png_debug(1, "in png_set_bgr");
+ if (png_ptr == NULL) return;
png_ptr->transformations |= PNG_BGR;
}
#endif
void PNGAPI
png_set_swap(png_structp png_ptr)
{
- png_debug(1, "in png_set_swap\n");
- if(png_ptr == NULL) return;
+ png_debug(1, "in png_set_swap");
+ if (png_ptr == NULL) return;
if (png_ptr->bit_depth == 16)
png_ptr->transformations |= PNG_SWAP_BYTES;
}
void PNGAPI
png_set_packing(png_structp png_ptr)
{
- png_debug(1, "in png_set_packing\n");
- if(png_ptr == NULL) return;
+ png_debug(1, "in png_set_packing");
+ if (png_ptr == NULL) return;
if (png_ptr->bit_depth < 8)
{
png_ptr->transformations |= PNG_PACK;
void PNGAPI
png_set_packswap(png_structp png_ptr)
{
- png_debug(1, "in png_set_packswap\n");
- if(png_ptr == NULL) return;
+ png_debug(1, "in png_set_packswap");
+ if (png_ptr == NULL) return;
if (png_ptr->bit_depth < 8)
png_ptr->transformations |= PNG_PACKSWAP;
}
void PNGAPI
png_set_shift(png_structp png_ptr, png_color_8p true_bits)
{
- png_debug(1, "in png_set_shift\n");
- if(png_ptr == NULL) return;
+ png_debug(1, "in png_set_shift");
+ if (png_ptr == NULL) return;
png_ptr->transformations |= PNG_SHIFT;
png_ptr->shift = *true_bits;
}
int PNGAPI
png_set_interlace_handling(png_structp png_ptr)
{
- png_debug(1, "in png_set_interlace handling\n");
+ png_debug(1, "in png_set_interlace handling");
if (png_ptr && png_ptr->interlaced)
{
png_ptr->transformations |= PNG_INTERLACE;
void PNGAPI
png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
{
- png_debug(1, "in png_set_filler\n");
- if(png_ptr == NULL) return;
+ png_debug(1, "in png_set_filler");
+ if (png_ptr == NULL) return;
png_ptr->transformations |= PNG_FILLER;
png_ptr->filler = (png_byte)filler;
if (filler_loc == PNG_FILLER_AFTER)
void PNGAPI
png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
{
- png_debug(1, "in png_set_add_alpha\n");
- if(png_ptr == NULL) return;
+ png_debug(1, "in png_set_add_alpha");
+ if (png_ptr == NULL) return;
png_set_filler(png_ptr, filler, filler_loc);
png_ptr->transformations |= PNG_ADD_ALPHA;
}
void PNGAPI
png_set_swap_alpha(png_structp png_ptr)
{
- png_debug(1, "in png_set_swap_alpha\n");
- if(png_ptr == NULL) return;
+ png_debug(1, "in png_set_swap_alpha");
+ if (png_ptr == NULL) return;
png_ptr->transformations |= PNG_SWAP_ALPHA;
}
#endif
void PNGAPI
png_set_invert_alpha(png_structp png_ptr)
{
- png_debug(1, "in png_set_invert_alpha\n");
- if(png_ptr == NULL) return;
+ png_debug(1, "in png_set_invert_alpha");
+ if (png_ptr == NULL) return;
png_ptr->transformations |= PNG_INVERT_ALPHA;
}
#endif
void PNGAPI
png_set_invert_mono(png_structp png_ptr)
{
- png_debug(1, "in png_set_invert_mono\n");
- if(png_ptr == NULL) return;
+ png_debug(1, "in png_set_invert_mono");
+ if (png_ptr == NULL) return;
png_ptr->transformations |= PNG_INVERT_MONO;
}
void /* PRIVATE */
png_do_invert(png_row_infop row_info, png_bytep row)
{
- png_debug(1, "in png_do_invert\n");
+ png_debug(1, "in png_do_invert");
/* This test removed from libpng version 1.0.13 and 1.2.0:
* if (row_info->bit_depth == 1 &&
*/
void /* PRIVATE */
png_do_swap(png_row_infop row_info, png_bytep row)
{
- png_debug(1, "in png_do_swap\n");
+ png_debug(1, "in png_do_swap");
if (
#if defined(PNG_USELESS_TESTS_SUPPORTED)
row != NULL && row_info != NULL &&
void /* PRIVATE */
png_do_packswap(png_row_infop row_info, png_bytep row)
{
- png_debug(1, "in png_do_packswap\n");
+ png_debug(1, "in png_do_packswap");
if (
#if defined(PNG_USELESS_TESTS_SUPPORTED)
row != NULL && row_info != NULL &&
void /* PRIVATE */
png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
{
- png_debug(1, "in png_do_strip_filler\n");
+ png_debug(1, "in png_do_strip_filler");
#if defined(PNG_USELESS_TESTS_SUPPORTED)
if (row != NULL && row_info != NULL)
#endif
void /* PRIVATE */
png_do_bgr(png_row_infop row_info, png_bytep row)
{
- png_debug(1, "in png_do_bgr\n");
+ png_debug(1, "in png_do_bgr");
if (
#if defined(PNG_USELESS_TESTS_SUPPORTED)
row != NULL && row_info != NULL &&
png_set_user_transform_info(png_structp png_ptr, png_voidp
user_transform_ptr, int user_transform_depth, int user_transform_channels)
{
- png_debug(1, "in png_set_user_transform_info\n");
- if(png_ptr == NULL) return;
+ png_debug(1, "in png_set_user_transform_info");
+ if (png_ptr == NULL) return;
#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
png_ptr->user_transform_ptr = user_transform_ptr;
png_ptr->user_transform_depth = (png_byte)user_transform_depth;
png_ptr->user_transform_channels = (png_byte)user_transform_channels;
#else
- if(user_transform_ptr || user_transform_depth || user_transform_channels)
+ if (user_transform_ptr || user_transform_depth || user_transform_channels)
png_warning(png_ptr,
"This version of libpng does not support user transform info");
#endif
png_voidp PNGAPI
png_get_user_transform_ptr(png_structp png_ptr)
{
-#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
if (png_ptr == NULL) return (NULL);
+#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
return ((png_voidp)png_ptr->user_transform_ptr);
#else
return (NULL);