webp/examples/pngdec.h
James Zern dba64d91bb cwebp: add PNG metadata extraction
the values of XMP/EXIF/ICC are currently unused.

Change-Id: I39d78b9a179f2d36c9c8ea12776bfdf6d8d18663
2012-12-20 18:32:09 -08:00

34 lines
997 B
C

// Copyright 2012 Google Inc. All Rights Reserved.
//
// This code is licensed under the same terms as WebM:
// Software License Agreement: http://www.webmproject.org/license/software/
// Additional IP Rights Grant: http://www.webmproject.org/license/additional/
// -----------------------------------------------------------------------------
//
// PNG decode.
#ifndef WEBP_EXAMPLES_PNGDEC_H_
#define WEBP_EXAMPLES_PNGDEC_H_
#include <stdio.h>
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
struct Metadata;
struct WebPPicture;
// Reads a PNG from 'in_file', returning the decoded output in 'pic'.
// If 'keep_alpha' is true and the PNG has an alpha channel, the output is RGBA
// otherwise it will be RGB.
// Returns true on success.
int ReadPNG(FILE* in_file, struct WebPPicture* const pic, int keep_alpha,
struct Metadata* const metadata);
#if defined(__cplusplus) || defined(c_plusplus)
} // extern "C"
#endif
#endif // WEBP_EXAMPLES_PNGDEC_H_