libwebp/imageio/pnmdec.h
Pascal Massimino dcf9d82a95 imageio: add limited PNM support for reading
see: http://netpbm.sourceforge.net/

Only reads P5 and P6 pnm files for now.

Change-Id: I2332a623f803df67455047f570f1cff9f464480a
2017-02-01 07:41:56 +00:00

38 lines
1.1 KiB
C

// Copyright 2017 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// partial PNM format decoder (ppm/pgm)
#ifndef WEBP_IMAGEIO_PNMDEC_H_
#define WEBP_IMAGEIO_PNMDEC_H_
#include "webp/types.h"
#ifdef __cplusplus
extern "C" {
#endif
struct Metadata;
struct WebPPicture;
// Reads a PNM file from 'data', returning the decoded output in 'pic'.
// The output is RGB or YUV depending on pic->use_argb value.
// Returns true on success.
// 'metadata' has no effect, but is kept for coherence with other signatures
// for image readers.
int ReadPNM(const uint8_t* const data, size_t data_size,
struct WebPPicture* const pic, int keep_alpha,
struct Metadata* const metadata);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_PNMDEC_H_