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Imported from libpng-1.0.1d.tar

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Glenn Randers-Pehrson
1998-05-21 09:27:50 -05:00
parent d0dce40075
commit 8686fff347
35 changed files with 1252 additions and 182 deletions
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20
pngwio.c
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@@ -1,17 +1,17 @@
/* pngwio.c - functions for data output
*
* libpng 1.0.1c
* libpng 1.0.1d
* 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
* May 9, 1998
* May 21, 1998
*
* This file provides a location for all output. Users which need
* special handling are expected to write functions which have the same
* arguments as these, and perform similar functions, but possibly use
* different output methods. Note that you shouldn't change these
* This file provides a location for all output. Users who need
* special handling are expected to write functions that have the same
* arguments as these and perform similar functions, but that possibly
* use different output methods. Note that you shouldn't change these
* functions, but rather write replacement functions and then change
* them at run time with png_set_write_fn(...).
*/
@@ -35,7 +35,7 @@ png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
}
#if !defined(PNG_NO_STDIO)
/* This is the function which does the actual writing of data. If you are
/* This is the function that does the actual writing of data. If you are
not writing to a standard C stream, you should create a replacement
write_data function and use it at run time with png_set_write_fn(), rather
than changing the library. */
@@ -133,13 +133,13 @@ png_default_flush(png_structp png_ptr)
png_ptr - pointer to a png output data structure
io_ptr - pointer to user supplied structure containing info about
the output functions. May be NULL.
write_data_fn - pointer to a new output function which takes as its
write_data_fn - pointer to a new output function that takes as its
arguments a pointer to a png_struct, a pointer to
data to be written, and a 32-bit unsigned int which is
data to be written, and a 32-bit unsigned int that is
the number of bytes to be written. The new write
function should call png_error(png_ptr, "Error msg")
to exit and output any fatal error messages.
flush_data_fn - pointer to a new flush function which takes as its
flush_data_fn - pointer to a new flush function that takes as its
arguments a pointer to a png_struct. After a call to
the flush function, there should be no data in any buffers
or pending transmission. If the output method doesn't do