/* pngwtran.c - transforms the data in a row for PNG writers
*
- * Last changed in libpng 1.6.18 [July 23, 2015]
- * Copyright (c) 1998-2002,2004,2006-2015 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.)
+ * Copyright (c) 2018 Cosmin Truta
+ * Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson
+ * Copyright (c) 1996-1997 Andreas Dilger
+ * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
*
* This code is released under the libpng license.
* For conditions of distribution and use, see the disclaimer
if (row_info->color_type != PNG_COLOR_TYPE_PALETTE)
{
int shift_start[4], shift_dec[4];
- int channels = 0;
+ unsigned int channels = 0;
if ((row_info->color_type & PNG_COLOR_MASK_COLOR) != 0)
{
if (row_info->bit_depth < 8)
{
png_bytep bp = row;
- png_size_t i;
+ size_t i;
unsigned int mask;
- png_size_t row_bytes = row_info->rowbytes;
+ size_t row_bytes = row_info->rowbytes;
if (bit_depth->gray == 1 && row_info->bit_depth == 2)
mask = 0x55;
for (i = 0; i < istop; i++, bp++)
{
-
- const unsigned int c = i%channels;
+ unsigned int c = i%channels;
int j;
unsigned int v, out;
for (bp = row, i = 0; i < istop; i++)
{
- const unsigned int c = i%channels;
+ unsigned int c = i%channels;
int j;
unsigned int value, v;
(png_ptr, /* png_ptr */
row_info, /* row_info: */
/* png_uint_32 width; width of row */
- /* png_size_t rowbytes; number of bytes in row */
+ /* size_t rowbytes; number of bytes in row */
/* png_byte color_type; color type of pixels */
/* png_byte bit_depth; bit depth of samples */
/* png_byte channels; number of channels (1-4) */
#ifdef PNG_WRITE_FILLER_SUPPORTED
if ((png_ptr->transformations & PNG_FILLER) != 0)
png_do_strip_channel(row_info, png_ptr->row_buf + 1,
- !(png_ptr->flags & PNG_FLAG_FILLER_AFTER));
+ !(png_ptr->flags & PNG_FLAG_FILLER_AFTER));
#endif
#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
#ifdef PNG_WRITE_SHIFT_SUPPORTED
if ((png_ptr->transformations & PNG_SHIFT) != 0)
png_do_shift(row_info, png_ptr->row_buf + 1,
- &(png_ptr->shift));
+ &(png_ptr->shift));
#endif
#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED