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Imported from libpng-0.99d.tar

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This commit is contained in:
Glenn Randers-Pehrson
1998-02-08 20:56:40 -06:00
parent 0f881d62b3
commit a357b99113
24 changed files with 3267 additions and 1198 deletions
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38
pngset.c
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@@ -1,12 +1,12 @@
/* pngset.c - storage of image information into info struct
*
* libpng 0.99c
* libpng 0.99d
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
* Copyright (c) 1996, 1997 Andreas Dilger
* Copyright (c) 1998, Glenn Randers-Pehrson
* February 7, 1998
* February 8, 1998
*
* The functions here are used during reads to store data from the file
* into the info struct, and during writes to store application data
@@ -22,7 +22,7 @@ void
png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background)
{
png_debug1(1, "in %s storage function\n", "bKGD");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
png_memcpy(&(info_ptr->background), background, sizeof(png_color_16));
@@ -37,7 +37,7 @@ png_set_cHRM(png_structp png_ptr, png_infop info_ptr,
double green_x, double green_y, double blue_x, double blue_y)
{
png_debug1(1, "in %s storage function\n", "cHRM");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
info_ptr->x_white = (float)white_x;
@@ -57,7 +57,7 @@ void
png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma)
{
png_debug1(1, "in %s storage function\n", "gAMA");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
info_ptr->gamma = (float)file_gamma;
@@ -70,7 +70,7 @@ void
png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
{
png_debug1(1, "in %s storage function\n", "hIST");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
info_ptr->hist = hist;
@@ -86,7 +86,7 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
{
int rowbytes_per_pixel;
png_debug1(1, "in %s storage function\n", "IHDR");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
info_ptr->width = width;
@@ -123,7 +123,7 @@ png_set_oFFs(png_structp png_ptr, png_infop info_ptr,
png_uint_32 offset_x, png_uint_32 offset_y, int unit_type)
{
png_debug1(1, "in %s storage function\n", "oFFs");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
info_ptr->x_offset = offset_x;
@@ -140,10 +140,10 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
png_charp units, png_charpp params)
{
png_uint_32 length;
png_uint_32 i;
int i;
png_debug1(1, "in %s storage function\n", "pCAL");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
length = png_strlen(purpose) + 1;
@@ -184,7 +184,7 @@ png_set_pHYs(png_structp png_ptr, png_infop info_ptr,
png_uint_32 res_x, png_uint_32 res_y, int unit_type)
{
png_debug1(1, "in %s storage function\n", "pHYs");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
info_ptr->x_pixels_per_unit = res_x;
@@ -199,7 +199,7 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
png_colorp palette, int num_palette)
{
png_debug1(1, "in %s storage function\n", "PLTE");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
info_ptr->palette = palette;
@@ -213,7 +213,7 @@ png_set_sBIT(png_structp png_ptr, png_infop info_ptr,
png_color_8p sig_bit)
{
png_debug1(1, "in %s storage function\n", "sBIT");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
png_memcpy(&(info_ptr->sig_bit), sig_bit, sizeof (png_color_8));
@@ -226,7 +226,7 @@ void
png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int intent)
{
png_debug1(1, "in %s storage function\n", "sRGB");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
info_ptr->srgb_intent = (png_byte)intent;
@@ -243,7 +243,7 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y;
#endif
png_debug1(1, "in %s storage function\n", "sRGB_gAMA_and_cHRM");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
png_set_sRGB(png_ptr, info_ptr, intent);
@@ -281,7 +281,7 @@ png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
png_debug1(1, "in %s storage function\n", (png_ptr->chunk_name[0] == '\0' ?
"text" : (png_const_charp)png_ptr->chunk_name));
if (info_ptr == NULL || num_text == 0)
if (png_ptr == NULL || info_ptr == NULL || num_text == 0)
return;
/* Make sure we have enough space in the "text" array in info_struct
@@ -298,7 +298,7 @@ png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
info_ptr->max_text = info_ptr->num_text + num_text + 8;
old_text = info_ptr->text;
info_ptr->text = (png_textp)png_malloc(png_ptr,
info_ptr->max_text * sizeof (png_text));
(png_uint_32)(info_ptr->max_text * sizeof (png_text)));
png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max *
sizeof(png_text)));
png_free(png_ptr, old_text);
@@ -344,7 +344,7 @@ void
png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time)
{
png_debug1(1, "in %s storage function\n", "tIME");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
png_memcpy(&(info_ptr->mod_time), mod_time, sizeof (png_time));
@@ -358,7 +358,7 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
png_bytep trans, int num_trans, png_color_16p trans_values)
{
png_debug1(1, "in %s storage function\n", "tRNS");
if (info_ptr == NULL)
if (png_ptr == NULL || info_ptr == NULL)
return;
if (trans != NULL)