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[libpng10] Imported from libpng-1.0.38rc01.tar

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This commit is contained in:
Glenn Randers-Pehrson
2008-07-17 13:53:31 -05:00
parent 3f6e7d5e64
commit 0303ee804d
65 changed files with 2206 additions and 1037 deletions
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173
pngrtran.c
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@@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* Last changed in libpng 1.2.27 [April 29, 2008]
* Last changed in libpng 1.2.30 [July 17, 2008]
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2008 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -15,7 +15,6 @@
#define PNG_INTERNAL
#include "png.h"
#if defined(PNG_READ_SUPPORTED)
/* Set the action on getting a CRC error for an ancillary or critical chunk. */
@@ -24,7 +23,7 @@ png_set_crc_action(png_structp png_ptr, int crit_action, int ancil_action)
{
png_debug(1, "in png_set_crc_action\n");
/* Tell libpng how we react to CRC errors in critical chunks */
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
switch (crit_action)
{
case PNG_CRC_NO_CHANGE: /* leave setting as is */
@@ -39,7 +38,8 @@ png_set_crc_action(png_structp png_ptr, int crit_action, int ancil_action)
PNG_FLAG_CRC_CRITICAL_IGNORE;
break;
case PNG_CRC_WARN_DISCARD: /* not a valid action for critical data */
png_warning(png_ptr, "Can't discard critical data on CRC error.");
png_warning(png_ptr,
"Can't discard critical data on CRC error.");
case PNG_CRC_ERROR_QUIT: /* error/quit */
case PNG_CRC_DEFAULT:
default:
@@ -81,7 +81,7 @@ png_set_background(png_structp png_ptr,
int need_expand, double background_gamma)
{
png_debug(1, "in png_set_background\n");
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
if (background_gamma_code == PNG_BACKGROUND_GAMMA_UNKNOWN)
{
png_warning(png_ptr, "Application must supply a known background gamma");
@@ -103,7 +103,7 @@ void PNGAPI
png_set_strip_16(png_structp png_ptr)
{
png_debug(1, "in png_set_strip_16\n");
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
png_ptr->transformations |= PNG_16_TO_8;
}
#endif
@@ -113,7 +113,7 @@ void PNGAPI
png_set_strip_alpha(png_structp png_ptr)
{
png_debug(1, "in png_set_strip_alpha\n");
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
png_ptr->flags |= PNG_FLAG_STRIP_ALPHA;
}
#endif
@@ -143,7 +143,7 @@ png_set_dither(png_structp png_ptr, png_colorp palette,
int full_dither)
{
png_debug(1, "in png_set_dither\n");
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
png_ptr->transformations |= PNG_DITHER;
if (!full_dither)
@@ -151,7 +151,7 @@ png_set_dither(png_structp png_ptr, png_colorp palette,
int i;
png_ptr->dither_index = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(num_palette * png_sizeof (png_byte)));
(png_uint_32)(num_palette * png_sizeof(png_byte)));
for (i = 0; i < num_palette; i++)
png_ptr->dither_index[i] = (png_byte)i;
}
@@ -167,7 +167,7 @@ png_set_dither(png_structp png_ptr, png_colorp palette,
/* initialize an array to sort colors */
png_ptr->dither_sort = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(num_palette * png_sizeof (png_byte)));
(png_uint_32)(num_palette * png_sizeof(png_byte)));
/* initialize the dither_sort array */
for (i = 0; i < num_palette; i++)
@@ -296,9 +296,9 @@ png_set_dither(png_structp png_ptr, png_colorp palette,
/* initialize palette index arrays */
png_ptr->index_to_palette = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(num_palette * png_sizeof (png_byte)));
(png_uint_32)(num_palette * png_sizeof(png_byte)));
png_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr,
(png_uint_32)(num_palette * png_sizeof (png_byte)));
(png_uint_32)(num_palette * png_sizeof(png_byte)));
/* initialize the sort array */
for (i = 0; i < num_palette; i++)
@@ -308,10 +308,10 @@ png_set_dither(png_structp png_ptr, png_colorp palette,
}
hash = (png_dsortpp)png_malloc(png_ptr, (png_uint_32)(769 *
png_sizeof (png_dsortp)));
png_sizeof(png_dsortp)));
for (i = 0; i < 769; i++)
hash[i] = NULL;
/* png_memset(hash, 0, 769 * png_sizeof (png_dsortp)); */
/* png_memset(hash, 0, 769 * png_sizeof(png_dsortp)); */
num_new_palette = num_palette;
@@ -459,10 +459,10 @@ png_set_dither(png_structp png_ptr, png_colorp palette,
png_size_t num_entries = ((png_size_t)1 << total_bits);
png_ptr->palette_lookup = (png_bytep )png_malloc(png_ptr,
(png_uint_32)(num_entries * png_sizeof (png_byte)));
(png_uint_32)(num_entries * png_sizeof(png_byte)));
png_memset(png_ptr->palette_lookup, 0, num_entries *
png_sizeof (png_byte));
png_sizeof(png_byte));
distance = (png_bytep)png_malloc(png_ptr, (png_uint_32)(num_entries *
png_sizeof(png_byte)));
@@ -527,7 +527,7 @@ void PNGAPI
png_set_gamma(png_structp png_ptr, double scrn_gamma, double file_gamma)
{
png_debug(1, "in png_set_gamma\n");
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
if ((fabs(scrn_gamma * file_gamma - 1.0) > PNG_GAMMA_THRESHOLD) ||
(png_ptr->color_type & PNG_COLOR_MASK_ALPHA) ||
(png_ptr->color_type == PNG_COLOR_TYPE_PALETTE))
@@ -546,7 +546,7 @@ void PNGAPI
png_set_expand(png_structp png_ptr)
{
png_debug(1, "in png_set_expand\n");
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
}
@@ -573,7 +573,7 @@ void PNGAPI
png_set_palette_to_rgb(png_structp png_ptr)
{
png_debug(1, "in png_set_palette_to_rgb\n");
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
}
@@ -584,7 +584,7 @@ void PNGAPI
png_set_expand_gray_1_2_4_to_8(png_structp png_ptr)
{
png_debug(1, "in png_set_expand_gray_1_2_4_to_8\n");
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
png_ptr->transformations |= PNG_EXPAND;
png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
}
@@ -597,7 +597,7 @@ void PNGAPI
png_set_gray_1_2_4_to_8(png_structp png_ptr)
{
png_debug(1, "in png_set_gray_1_2_4_to_8\n");
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
}
#endif
@@ -635,7 +635,7 @@ png_set_rgb_to_gray(png_structp png_ptr, int error_action, double red,
{
int red_fixed = (int)((float)red*100000.0 + 0.5);
int green_fixed = (int)((float)green*100000.0 + 0.5);
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
png_set_rgb_to_gray_fixed(png_ptr, error_action, red_fixed, green_fixed);
}
#endif
@@ -645,7 +645,7 @@ png_set_rgb_to_gray_fixed(png_structp png_ptr, int error_action,
png_fixed_point red, png_fixed_point green)
{
png_debug(1, "in png_set_rgb_to_gray\n");
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
switch(error_action)
{
case 1: png_ptr->transformations |= PNG_RGB_TO_GRAY;
@@ -659,18 +659,19 @@ png_set_rgb_to_gray_fixed(png_structp png_ptr, int error_action,
png_ptr->transformations |= PNG_EXPAND;
#else
{
png_warning(png_ptr, "Cannot do RGB_TO_GRAY without EXPAND_SUPPORTED.");
png_warning(png_ptr,
"Cannot do RGB_TO_GRAY without EXPAND_SUPPORTED.");
png_ptr->transformations &= ~PNG_RGB_TO_GRAY;
}
#endif
{
png_uint_16 red_int, green_int;
if(red < 0 || green < 0)
if (red < 0 || green < 0)
{
red_int = 6968; /* .212671 * 32768 + .5 */
green_int = 23434; /* .715160 * 32768 + .5 */
}
else if(red + green < 100000L)
else if (red + green < 100000L)
{
red_int = (png_uint_16)(((png_uint_32)red*32768L)/100000L);
green_int = (png_uint_16)(((png_uint_32)green*32768L)/100000L);
@@ -683,7 +684,8 @@ png_set_rgb_to_gray_fixed(png_structp png_ptr, int error_action,
}
png_ptr->rgb_to_gray_red_coeff = red_int;
png_ptr->rgb_to_gray_green_coeff = green_int;
png_ptr->rgb_to_gray_blue_coeff = (png_uint_16)(32768-red_int-green_int);
png_ptr->rgb_to_gray_blue_coeff =
(png_uint_16)(32768 - red_int - green_int);
}
}
#endif
@@ -696,13 +698,13 @@ png_set_read_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
read_user_transform_fn)
{
png_debug(1, "in png_set_read_user_transform_fn\n");
if(png_ptr == NULL) return;
if (png_ptr == NULL) return;
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
png_ptr->transformations |= PNG_USER_TRANSFORM;
png_ptr->read_user_transform_fn = read_user_transform_fn;
#endif
#ifdef PNG_LEGACY_SUPPORTED
if(read_user_transform_fn)
if (read_user_transform_fn)
png_warning(png_ptr,
"This version of libpng does not support user transforms");
#endif
@@ -717,7 +719,7 @@ png_init_read_transformations(png_structp png_ptr)
{
png_debug(1, "in png_init_read_transformations\n");
#if defined(PNG_USELESS_TESTS_SUPPORTED)
if(png_ptr != NULL)
if (png_ptr != NULL)
#endif
{
#if defined(PNG_READ_BACKGROUND_SUPPORTED) || defined(PNG_READ_SHIFT_SUPPORTED) \
@@ -818,7 +820,7 @@ png_init_read_transformations(png_structp png_ptr)
{
/* invert the alpha channel (in tRNS) unless the pixels are
going to be expanded, in which case leave it for later */
int i,istop;
int i, istop;
istop=(int)png_ptr->num_trans;
for (i=0; i<istop; i++)
png_ptr->trans[i] = (png_byte)(255 - png_ptr->trans[i]);
@@ -839,7 +841,7 @@ png_init_read_transformations(png_structp png_ptr)
&& (fabs(png_ptr->screen_gamma * png_ptr->gamma - 1.0)
< PNG_GAMMA_THRESHOLD))
{
int i,k;
int i, k;
k=0;
for (i=0; i<png_ptr->num_trans; i++)
{
@@ -1110,7 +1112,7 @@ png_init_read_transformations(png_structp png_ptr)
}
#if !defined(PNG_READ_GAMMA_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED) \
&& !defined(PNG_READ_BACKGROUND_SUPPORTED)
if(png_ptr)
if (png_ptr)
return;
#endif
}
@@ -1239,11 +1241,11 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) && \
defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
if(png_ptr->transformations & PNG_USER_TRANSFORM)
if (png_ptr->transformations & PNG_USER_TRANSFORM)
{
if(info_ptr->bit_depth < png_ptr->user_transform_depth)
if (info_ptr->bit_depth < png_ptr->user_transform_depth)
info_ptr->bit_depth = png_ptr->user_transform_depth;
if(info_ptr->channels < png_ptr->user_transform_channels)
if (info_ptr->channels < png_ptr->user_transform_channels)
info_ptr->channels = png_ptr->user_transform_channels;
}
#endif
@@ -1251,10 +1253,10 @@ defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
info_ptr->pixel_depth = (png_byte)(info_ptr->channels *
info_ptr->bit_depth);
info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth,info_ptr->width);
info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, info_ptr->width);
#if !defined(PNG_READ_EXPAND_SUPPORTED)
if(png_ptr)
if (png_ptr)
return;
#endif
}
@@ -1273,7 +1275,7 @@ png_do_read_transformations(png_structp png_ptr)
char msg[50];
png_snprintf2(msg, 50,
"NULL row buffer for row %ld, pass %d", png_ptr->row_number,
"NULL row buffer for row %ld, pass %d", (long)png_ptr->row_number,
png_ptr->pass);
png_error(png_ptr, msg);
#else
@@ -1324,13 +1326,13 @@ png_do_read_transformations(png_structp png_ptr)
{
int rgb_error =
png_do_rgb_to_gray(png_ptr, &(png_ptr->row_info), png_ptr->row_buf + 1);
if(rgb_error)
if (rgb_error)
{
png_ptr->rgb_to_gray_status=1;
if((png_ptr->transformations & PNG_RGB_TO_GRAY) ==
if ((png_ptr->transformations & PNG_RGB_TO_GRAY) ==
PNG_RGB_TO_GRAY_WARN)
png_warning(png_ptr, "png_do_rgb_to_gray found nongray pixel");
if((png_ptr->transformations & PNG_RGB_TO_GRAY) ==
if ((png_ptr->transformations & PNG_RGB_TO_GRAY) ==
PNG_RGB_TO_GRAY_ERR)
png_error(png_ptr, "png_do_rgb_to_gray found nongray pixel");
}
@@ -1414,7 +1416,7 @@ From Andreas Dilger e-mail to png-implement, 26 March 1998:
{
png_do_dither((png_row_infop)&(png_ptr->row_info), png_ptr->row_buf + 1,
png_ptr->palette_lookup, png_ptr->dither_index);
if(png_ptr->row_info.rowbytes == (png_uint_32)0)
if (png_ptr->row_info.rowbytes == (png_uint_32)0)
png_error(png_ptr, "png_do_dither returned rowbytes=0");
}
#endif
@@ -1476,7 +1478,7 @@ From Andreas Dilger e-mail to png-implement, 26 March 1998:
#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
if (png_ptr->transformations & PNG_USER_TRANSFORM)
{
if(png_ptr->read_user_transform_fn != NULL)
if (png_ptr->read_user_transform_fn != NULL)
(*(png_ptr->read_user_transform_fn)) /* user read transform function */
(png_ptr, /* png_ptr */
&(png_ptr->row_info), /* row_info: */
@@ -1488,9 +1490,9 @@ From Andreas Dilger e-mail to png-implement, 26 March 1998:
/* png_byte pixel_depth; bits per pixel (depth*channels) */
png_ptr->row_buf + 1); /* start of pixel data for row */
#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
if(png_ptr->user_transform_depth)
if (png_ptr->user_transform_depth)
png_ptr->row_info.bit_depth = png_ptr->user_transform_depth;
if(png_ptr->user_transform_channels)
if (png_ptr->user_transform_channels)
png_ptr->row_info.channels = png_ptr->user_transform_channels;
#endif
png_ptr->row_info.pixel_depth = (png_byte)(png_ptr->row_info.bit_depth *
@@ -1967,7 +1969,7 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
#endif
row_info->color_type == PNG_COLOR_TYPE_GRAY)
{
if(row_info->bit_depth == 8)
if (row_info->bit_depth == 8)
{
/* This changes the data from G to GX */
if (flags & PNG_FLAG_FILLER_AFTER)
@@ -1999,7 +2001,7 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
row_info->rowbytes = row_width * 2;
}
}
else if(row_info->bit_depth == 16)
else if (row_info->bit_depth == 16)
{
/* This changes the data from GG to GGXX */
if (flags & PNG_FLAG_FILLER_AFTER)
@@ -2039,7 +2041,7 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
} /* COLOR_TYPE == GRAY */
else if (row_info->color_type == PNG_COLOR_TYPE_RGB)
{
if(row_info->bit_depth == 8)
if (row_info->bit_depth == 8)
{
/* This changes the data from RGB to RGBX */
if (flags & PNG_FLAG_FILLER_AFTER)
@@ -2075,7 +2077,7 @@ png_do_read_filler(png_row_infop row_info, png_bytep row,
row_info->rowbytes = row_width * 4;
}
}
else if(row_info->bit_depth == 16)
else if (row_info->bit_depth == 16)
{
/* This changes the data from RRGGBB to RRGGBBXX */
if (flags & PNG_FLAG_FILLER_AFTER)
@@ -2202,7 +2204,7 @@ png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
row_info->color_type |= PNG_COLOR_MASK_COLOR;
row_info->pixel_depth = (png_byte)(row_info->channels *
row_info->bit_depth);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,row_width);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
}
}
#endif
@@ -2210,8 +2212,11 @@ png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
/* reduce RGB files to grayscale, with or without alpha
* using the equation given in Poynton's ColorFAQ at
* <http://www.inforamp.net/~poynton/>
* <http://www.inforamp.net/~poynton/> (THIS LINK IS DEAD June 2008)
* Copyright (c) 1998-01-04 Charles Poynton poynton at inforamp.net
* New links:
* <http://www.poynton.com/notes/colour_and_gamma/>
* Copyright (c) 2006-11-28 Charles Poynton poynton at poynton.com
*
* Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
*
@@ -2262,14 +2267,14 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
png_byte red = png_ptr->gamma_to_1[*(sp++)];
png_byte green = png_ptr->gamma_to_1[*(sp++)];
png_byte blue = png_ptr->gamma_to_1[*(sp++)];
if(red != green || red != blue)
if (red != green || red != blue)
{
rgb_error |= 1;
*(dp++) = png_ptr->gamma_from_1[
(rc*red+gc*green+bc*blue)>>15];
(rc*red + gc*green + bc*blue)>>15];
}
else
*(dp++) = *(sp-1);
*(dp++) = *(sp - 1);
}
}
else
@@ -2282,13 +2287,13 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
png_byte red = *(sp++);
png_byte green = *(sp++);
png_byte blue = *(sp++);
if(red != green || red != blue)
if (red != green || red != blue)
{
rgb_error |= 1;
*(dp++) = (png_byte)((rc*red+gc*green+bc*blue)>>15);
*(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15);
}
else
*(dp++) = *(sp-1);
*(dp++) = *(sp - 1);
}
}
}
@@ -2309,7 +2314,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
green = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
blue = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
if(red == green && red == blue)
if (red == green && red == blue)
w = red;
else
{
@@ -2343,7 +2348,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
green = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
blue = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
if(red != green || red != blue)
if (red != green || red != blue)
rgb_error |= 1;
gray16 = (png_uint_16)((rc*red + gc*green + bc*blue)>>15);
*(dp++) = (png_byte)((gray16>>8) & 0xff);
@@ -2366,7 +2371,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
png_byte red = png_ptr->gamma_to_1[*(sp++)];
png_byte green = png_ptr->gamma_to_1[*(sp++)];
png_byte blue = png_ptr->gamma_to_1[*(sp++)];
if(red != green || red != blue)
if (red != green || red != blue)
rgb_error |= 1;
*(dp++) = png_ptr->gamma_from_1
[(rc*red + gc*green + bc*blue)>>15];
@@ -2383,7 +2388,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
png_byte red = *(sp++);
png_byte green = *(sp++);
png_byte blue = *(sp++);
if(red != green || red != blue)
if (red != green || red != blue)
rgb_error |= 1;
*(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15);
*(dp++) = *(sp++); /* alpha */
@@ -2406,7 +2411,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
green = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
blue = (png_uint_16)(((*(sp))<<8) | *(sp+1)); sp+=2;
if(red == green && red == blue)
if (red == green && red == blue)
w = red;
else
{
@@ -2440,7 +2445,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
red = (png_uint_16)((*(sp)<<8) | *(sp+1)); sp+=2;
green = (png_uint_16)((*(sp)<<8) | *(sp+1)); sp+=2;
blue = (png_uint_16)((*(sp)<<8) | *(sp+1)); sp+=2;
if(red != green || red != blue)
if (red != green || red != blue)
rgb_error |= 1;
gray16 = (png_uint_16)((rc*red + gc*green + bc*blue)>>15);
*(dp++) = (png_byte)((gray16>>8) & 0xff);
@@ -2455,7 +2460,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
row_info->color_type &= ~PNG_COLOR_MASK_COLOR;
row_info->pixel_depth = (png_byte)(row_info->channels *
row_info->bit_depth);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,row_width);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
}
return rgb_error;
}
@@ -3373,7 +3378,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
row_info->channels--;
row_info->pixel_depth = (png_byte)(row_info->channels *
row_info->bit_depth);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,row_width);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
}
}
}
@@ -3832,7 +3837,7 @@ png_do_expand(png_row_infop row_info, png_bytep row,
dp = row + (row_info->rowbytes << 1) - 1;
for (i = 0; i < row_width; i++)
{
if (*(sp-1) == gray_high && *(sp) == gray_low)
if (*(sp - 1) == gray_high && *(sp) == gray_low)
{
*dp-- = 0;
*dp-- = 0;
@@ -3911,7 +3916,7 @@ png_do_expand(png_row_infop row_info, png_bytep row,
row_info->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
row_info->channels = 4;
row_info->pixel_depth = (png_byte)(row_info->bit_depth << 2);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,row_width);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
}
}
}
@@ -3964,7 +3969,7 @@ png_do_dither(png_row_infop row_info, png_bytep row,
row_info->color_type = PNG_COLOR_TYPE_PALETTE;
row_info->channels = 1;
row_info->pixel_depth = row_info->bit_depth;
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,row_width);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
}
else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
palette_lookup != NULL && row_info->bit_depth == 8)
@@ -3993,7 +3998,7 @@ png_do_dither(png_row_infop row_info, png_bytep row,
row_info->color_type = PNG_COLOR_TYPE_PALETTE;
row_info->channels = 1;
row_info->pixel_depth = row_info->bit_depth;
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,row_width);
row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
}
else if (row_info->color_type == PNG_COLOR_TYPE_PALETTE &&
dither_lookup && row_info->bit_depth == 8)
@@ -4062,7 +4067,7 @@ png_build_gamma_table(png_structp png_ptr)
png_ptr->gamma_from_1 = (png_bytep)png_malloc(png_ptr,
(png_uint_32)256);
if(png_ptr->screen_gamma > 0.000001)
if (png_ptr->screen_gamma > 0.000001)
g = 1.0 / png_ptr->screen_gamma;
else
g = png_ptr->gamma; /* probably doing rgb_to_gray */
@@ -4122,7 +4127,7 @@ png_build_gamma_table(png_structp png_ptr)
g = 1.0;
png_ptr->gamma_16_table = (png_uint_16pp)png_malloc(png_ptr,
(png_uint_32)(num * png_sizeof (png_uint_16p)));
(png_uint_32)(num * png_sizeof(png_uint_16p)));
if (png_ptr->transformations & (PNG_16_TO_8 | PNG_BACKGROUND))
{
@@ -4132,7 +4137,7 @@ png_build_gamma_table(png_structp png_ptr)
for (i = 0; i < num; i++)
{
png_ptr->gamma_16_table[i] = (png_uint_16p)png_malloc(png_ptr,
(png_uint_32)(256 * png_sizeof (png_uint_16)));
(png_uint_32)(256 * png_sizeof(png_uint_16)));
}
g = 1.0 / g;
@@ -4162,7 +4167,7 @@ png_build_gamma_table(png_structp png_ptr)
for (i = 0; i < num; i++)
{
png_ptr->gamma_16_table[i] = (png_uint_16p)png_malloc(png_ptr,
(png_uint_32)(256 * png_sizeof (png_uint_16)));
(png_uint_32)(256 * png_sizeof(png_uint_16)));
ig = (((png_uint_32)i * (png_uint_32)png_gamma_shift[shift]) >> 4);
for (j = 0; j < 256; j++)
@@ -4182,12 +4187,12 @@ png_build_gamma_table(png_structp png_ptr)
g = 1.0 / (png_ptr->gamma);
png_ptr->gamma_16_to_1 = (png_uint_16pp)png_malloc(png_ptr,
(png_uint_32)(num * png_sizeof (png_uint_16p )));
(png_uint_32)(num * png_sizeof(png_uint_16p )));
for (i = 0; i < num; i++)
{
png_ptr->gamma_16_to_1[i] = (png_uint_16p)png_malloc(png_ptr,
(png_uint_32)(256 * png_sizeof (png_uint_16)));
(png_uint_32)(256 * png_sizeof(png_uint_16)));
ig = (((png_uint_32)i *
(png_uint_32)png_gamma_shift[shift]) >> 4);
@@ -4199,18 +4204,18 @@ png_build_gamma_table(png_structp png_ptr)
}
}
if(png_ptr->screen_gamma > 0.000001)
if (png_ptr->screen_gamma > 0.000001)
g = 1.0 / png_ptr->screen_gamma;
else
g = png_ptr->gamma; /* probably doing rgb_to_gray */
png_ptr->gamma_16_from_1 = (png_uint_16pp)png_malloc(png_ptr,
(png_uint_32)(num * png_sizeof (png_uint_16p)));
(png_uint_32)(num * png_sizeof(png_uint_16p)));
for (i = 0; i < num; i++)
{
png_ptr->gamma_16_from_1[i] = (png_uint_16p)png_malloc(png_ptr,
(png_uint_32)(256 * png_sizeof (png_uint_16)));
(png_uint_32)(256 * png_sizeof(png_uint_16)));
ig = (((png_uint_32)i *
(png_uint_32)png_gamma_shift[shift]) >> 4);
@@ -4275,11 +4280,11 @@ png_do_read_intrapixel(png_row_infop row_info, png_bytep row)
for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
{
png_uint_32 s0 = (*(rp ) << 8) | *(rp+1);
png_uint_32 s1 = (*(rp+2) << 8) | *(rp+3);
png_uint_32 s2 = (*(rp+4) << 8) | *(rp+5);
png_uint_32 red = (png_uint_32)((s0+s1+65536L) & 0xffffL);
png_uint_32 blue = (png_uint_32)((s2+s1+65536L) & 0xffffL);
png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5);
png_uint_32 red = (png_uint_32)((s0 + s1 + 65536L) & 0xffffL);
png_uint_32 blue = (png_uint_32)((s2 + s1 + 65536L) & 0xffffL);
*(rp ) = (png_byte)((red >> 8) & 0xff);
*(rp+1) = (png_byte)(red & 0xff);
*(rp+4) = (png_byte)((blue >> 8) & 0xff);