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Imported from libpng-1.4.0beta61.tar

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This commit is contained in:
Glenn Randers-Pehrson
2009-05-20 12:45:29 -05:00
parent b205f291f6
commit 4bb4d01681
32 changed files with 370 additions and 346 deletions
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22
example.c
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@@ -2,7 +2,7 @@
#if 0 /* in case someone actually tries to compile this */
/* example.c - an example of using libpng
* Last changed in libpng 1.4.0 [May 18, 2009]
* Last changed in libpng 1.4.0 [May 20, 2009]
* This file has been placed in the public domain by the authors.
* Maintained 1998-2009 Glenn Randers-Pehrson
* Maintained 1996, 1997 Andreas Dilger)
@@ -93,13 +93,13 @@ void read_png(char *file_name) /* We need to open the file */
return (ERROR);
#else no_open_file /* prototype 2 */
void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
void read_png(FILE *fp, unsigned int sig_read) /* File is already open */
{
png_structp png_ptr;
png_infop info_ptr;
png_uint_32 width, height;
int bit_depth, color_type, interlace_type;
#endif no_open_file /* only use one prototype! */
#endif no_open_file /* Only use one prototype! */
/* Create and initialize the png_struct with the desired error handler
* functions. If you want to use the default stderr and longjump method,
@@ -280,7 +280,7 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
png_colorp palette;
/* This reduces the image to the application supplied palette */
if (/* we have our own palette */)
if (/* We have our own palette */)
{
/* An array of colors to which the image should be dithered */
png_color std_color_cube[MAX_SCREEN_COLORS];
@@ -377,13 +377,13 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
#else no_sparkle /* Read the image using the "rectangle" effect */
png_read_rows(png_ptr, NULL, &row_pointers[y],
number_of_rows);
#endif no_sparkle /* use only one of these two methods */
#endif no_sparkle /* Use only one of these two methods */
}
/* if you want to display the image after every pass, do so here */
#endif no_single /* use only one of these two methods */
/* If you want to display the image after every pass, do so here */
#endif no_single /* Use only one of these two methods */
}
#endif no_entire /* use only one of these two methods */
#endif no_entire /* Use only one of these two methods */
/* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
png_read_end(png_ptr, info_ptr);
@@ -397,7 +397,7 @@ void read_png(FILE *fp, unsigned int sig_read) /* file is already open */
/* Close the file */
fclose(fp);
/* that's it */
/* That's it */
return (OK);
}
@@ -621,7 +621,7 @@ void write_png(char *file_name /* , ... other image information ... */)
png_set_write_fn(png_ptr, (void *)user_io_ptr, user_write_fn,
user_IO_flush_function);
/* where user_io_ptr is a structure you want available to the callbacks */
#endif no_streams /* only use one initialization method */
#endif no_streams /* Only use one initialization method */
#ifdef hilevel
/* This is the easy way. Use it if you already have all the
@@ -773,7 +773,7 @@ void write_png(char *file_name /* , ... other image information ... */)
#ifdef entire /* Write out the entire image data in one call */
png_write_image(png_ptr, row_pointers);
/* the other way to write the image - deal with interlacing */
/* The other way to write the image - deal with interlacing */
#else no_entire /* Write out the image data by one or more scanlines */