mewin/libpng
1
0
Fork 0
mirror of https://git.code.sf.net/p/libpng/code.git synced 2025-07-10 18:04:09 +02:00
Code Issues Projects Releases Wiki Activity

Imported from pngcrush-1.4.6.tar

Browse Source
This commit is contained in:
Glenn Randers-Pehrson
2000-07-18 06:38:28 -05:00
parent 55c878d8e5
commit 4d6ce965b5
24 changed files with 1000 additions and 436 deletions
Download Patch File Download Diff File Expand all files Collapse all files

77
pngrutil.c
View File

@@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* libpng 1.0.7rc2 - June 28, 2000
* libpng 1.0.8rc1 - July 17, 2000
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -14,6 +14,30 @@
#define PNG_INTERNAL
#include "png.h"
#if defined(_WIN32_WCE)
/* strtod() function is not supported on WindowsCE */
# ifdef PNG_FLOATING_POINT_SUPPORTED
__inline double strtod(const char *nptr, char **endptr)
{
double result = 0;
int len;
wchar_t *str, *end;
len = MultiByteToWideChar(CP_ACP, 0, nptr, -1, NULL, 0);
str = (wchar_t *)malloc(len * sizeof(wchar_t));
if ( NULL != str )
{
MultiByteToWideChar(CP_ACP, 0, nptr, -1, str, len);
result = wcstod(str, &end);
len = WideCharToMultiByte(CP_ACP, 0, end, -1, NULL, 0, NULL, NULL);
*endptr = (char *)nptr + (strlen(nptr) - len + 1);
free(str);
}
return result;
}
# endif
#endif
#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
/* Grab an unsigned 32-bit integer from a buffer in big-endian format. */
png_uint_32 /* PRIVATE */
@@ -225,11 +249,18 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
}
if (ret != Z_STREAM_END)
{
#if !defined(PNG_NO_STDIO)
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
char umsg[50];
sprintf(umsg,"Incomplete compressed datastream in %s chunk",
png_ptr->chunk_name);
if (ret == Z_BUF_ERROR)
sprintf(umsg,"Buffer error in compressed datastream in %s chunk",
png_ptr->chunk_name);
else if (ret == Z_DATA_ERROR)
sprintf(umsg,"Data error in compressed datastream in %s chunk",
png_ptr->chunk_name);
else
sprintf(umsg,"Incomplete compressed datastream in %s chunk",
png_ptr->chunk_name);
png_warning(png_ptr, umsg);
#else
png_warning(png_ptr,
@@ -246,7 +277,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
}
else /* if (comp_type != PNG_TEXT_COMPRESSION_zTXt) */
{
#if !defined(PNG_NO_STDIO)
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
char umsg[50];
sprintf(umsg, "Unknown zTXt compression type %d", comp_type);
@@ -357,7 +388,7 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
(png_uint_32)png_ptr->pixel_depth + 7) >> 3);
png_debug1(3,"bit_depth = %d\n", png_ptr->bit_depth);
png_debug1(3,"channels = %d\n", png_ptr->channels);
png_debug1(3,"rowbytes = %d\n", png_ptr->rowbytes);
png_debug1(3,"rowbytes = %lu\n", png_ptr->rowbytes);
png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth,
color_type, interlace_type, compression_type, filter_type);
}
@@ -585,7 +616,7 @@ png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_warning(png_ptr,
"Ignoring incorrect gAMA value when sRGB is also present");
#ifndef PNG_NO_STDIO
#ifndef PNG_NO_CONSOLE_IO
fprintf(stderr, "gamma = (%d/100000)\n", (int)igamma);
#endif
return;
@@ -795,7 +826,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_warning(png_ptr,
"Ignoring incorrect cHRM value when sRGB is also present");
#ifndef PNG_NO_STDIO
#ifndef PNG_NO_CONSOLE_IO
#ifdef PNG_FLOATING_POINT_SUPPORTED
fprintf(stderr,"wx=%f, wy=%f, rx=%f, ry=%f\n",
white_x, white_y, red_x, red_y);
@@ -807,7 +838,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
fprintf(stderr,"gx=%ld, gy=%ld, bx=%ld, by=%ld\n",
int_x_green, int_y_green, int_x_blue, int_y_blue);
#endif
#endif /* PNG_NO_STDIO */
#endif /* PNG_NO_CONSOLE_IO */
}
png_crc_finish(png_ptr, 0);
return;
@@ -901,7 +932,7 @@ png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
png_warning(png_ptr,
"Ignoring incorrect gAMA value when sRGB is also present");
#ifndef PNG_NO_STDIO
#ifndef PNG_NO_CONSOLE_IO
# ifdef PNG_FIXED_POINT_SUPPORTED
fprintf(stderr,"incorrect gamma=(%d/100000)\n",(int)png_ptr->int_gamma);
# else
@@ -1233,9 +1264,11 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
#ifdef PNG_FREE_ME_SUPPORTED
png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
png_ptr->free_me |= PNG_FREE_TRNS;
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
png_ptr->free_me |= PNG_FREE_TRNS;
#else
png_ptr->flags |= PNG_FLAG_FREE_TRNS;
if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
png_ptr->flags |= PNG_FLAG_FREE_TRNS;
#endif
png_set_tRNS(png_ptr, info_ptr, png_ptr->trans, png_ptr->num_trans,
&(png_ptr->trans_values));
@@ -1479,7 +1512,7 @@ png_handle_oFFs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
#endif
#if defined(PNG_READ_pCAL_SUPPORTED)
/* read the pCAL chunk (png-scivis-19970203) */
/* read the pCAL chunk (described in the PNG Extensions document) */
void /* PRIVATE */
png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{
@@ -1508,7 +1541,7 @@ png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
return;
}
png_debug1(2, "Allocating and reading pCAL chunk data (%d bytes)\n",
png_debug1(2, "Allocating and reading pCAL chunk data (%lu bytes)\n",
length + 1);
purpose = (png_charp)png_malloc(png_ptr, length + 1);
slength = (png_size_t)length;
@@ -1628,7 +1661,7 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
return;
}
png_debug1(2, "Allocating and reading sCAL chunk data (%d bytes)\n",
png_debug1(2, "Allocating and reading sCAL chunk data (%lu bytes)\n",
length + 1);
buffer = (png_charp)png_malloc(png_ptr, length + 1);
slength = (png_size_t)length;
@@ -2543,7 +2576,7 @@ png_read_filter_row
png_bytep prev_row, int filter)
{
png_debug(1, "in png_read_filter_row\n");
png_debug2(2,"row = %d, filter = %d\n", png_ptr->row_number, filter);
png_debug2(2,"row = %lu, filter = %d\n", png_ptr->row_number, filter);
switch (filter)
{
case PNG_FILTER_VALUE_NONE:
@@ -2957,12 +2990,12 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
png_memset_check(png_ptr, png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
png_debug1(3, "width = %d,\n", png_ptr->width);
png_debug1(3, "height = %d,\n", png_ptr->height);
png_debug1(3, "iwidth = %d,\n", png_ptr->iwidth);
png_debug1(3, "num_rows = %d\n", png_ptr->num_rows);
png_debug1(3, "rowbytes = %d,\n", png_ptr->rowbytes);
png_debug1(3, "irowbytes = %d,\n", png_ptr->irowbytes);
png_debug1(3, "width = %lu,\n", png_ptr->width);
png_debug1(3, "height = %lu,\n", png_ptr->height);
png_debug1(3, "iwidth = %lu,\n", png_ptr->iwidth);
png_debug1(3, "num_rows = %lu\n", png_ptr->num_rows);
png_debug1(3, "rowbytes = %lu,\n", png_ptr->rowbytes);
png_debug1(3, "irowbytes = %lu,\n", png_ptr->irowbytes);
png_ptr->flags |= PNG_FLAG_ROW_INIT;
}