image_enc.h
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// Copyright 2016 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.
// -----------------------------------------------------------------------------
//
// All-in-one library to save PNG/JPEG/WebP/TIFF/WIC images.
//
// Author: Skal (pascal.massimino@gmail.com)
#ifndef WEBP_IMAGEIO_IMAGE_ENC_H_
#define WEBP_IMAGEIO_IMAGE_ENC_H_
#include <stdio.h>
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#include "webp/types.h"
#include "webp/decode.h"
#ifdef __cplusplus
extern "C" {
#endif
// Output types
typedef enum {
PNG = 0,
PAM,
PPM,
PGM,
BMP,
TIFF,
RAW_YUV,
ALPHA_PLANE_ONLY, // this is for experimenting only
// forced colorspace output (for testing, mostly)
RGB, RGBA, BGR, BGRA, ARGB,
RGBA_4444, RGB_565,
rgbA, bgrA, Argb, rgbA_4444,
YUV, YUVA
} WebPOutputFileFormat;
// General all-purpose call.
// Most formats expect a 'buffer' containing RGBA-like samples, except
// RAW_YUV, YUV and YUVA formats.
// If 'out_file_name' is "-", data is saved to stdout.
// Returns false if an error occurred, true otherwise.
int WebPSaveImage(const WebPDecBuffer* const buffer,
WebPOutputFileFormat format, const char* const out_file_name);
// Save to PNG.
#ifdef HAVE_WINCODEC_H
int WebPWritePNG(const char* out_file_name, int use_stdout,
const struct WebPDecBuffer* const buffer);
#else
int WebPWritePNG(FILE* out_file, const WebPDecBuffer* const buffer);
#endif
// Save to PPM format (RGB, no alpha)
int WebPWritePPM(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save to PAM format (= PPM + alpha)
int WebPWritePAM(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save 16b mode (RGBA4444, RGB565, ...) for debugging purposes.
int WebPWrite16bAsPGM(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save as BMP
int WebPWriteBMP(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save as TIFF
int WebPWriteTIFF(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save the ALPHA plane (only) as a PGM
int WebPWriteAlphaPlane(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save as YUV samples as PGM format (using IMC4 layout).
// See: http://www.fourcc.org/yuv.php#IMC4.
// (very convenient format for viewing the samples, esp. for odd dimensions).
int WebPWritePGM(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save YUV(A) planes sequentially (raw dump)
int WebPWriteYUV(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save 16b mode (RGBA4444, RGB565, ...) as PGM format, for debugging purposes.
int WebPWrite16bAsPGM(FILE* fout, const struct WebPDecBuffer* const buffer);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_IMAGE_ENC_H_