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/*
* Copyright 2010 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkJpegUtility_DEFINED
#define SkJpegUtility_DEFINED
#include "SkImageDecoder.h"
#include "SkStream.h"
extern "C" {
#include "jpeglib.h"
#include "jerror.h"
}
#include <setjmp.h>
/* Our error-handling struct.
*
*/
struct skjpeg_error_mgr : jpeg_error_mgr {
jmp_buf fJmpBuf;
};
void skjpeg_error_exit(j_common_ptr cinfo);
///////////////////////////////////////////////////////////////////////////
/* Our source struct for directing jpeg to our stream object.
*/
struct skjpeg_source_mgr : jpeg_source_mgr {
skjpeg_source_mgr(SkStream* stream, SkImageDecoder* decoder);
~skjpeg_source_mgr();
// fStream is ref'ed and unref'ed
SkStream* fStream;
// Unowned pointer to the decoder, used to check if the decoding process
// has been cancelled.
SkImageDecoder* fDecoder;
enum {
kBufferSize = 1024
};
char fBuffer[kBufferSize];
};
/////////////////////////////////////////////////////////////////////////////
/* Our destination struct for directing decompressed pixels to our stream
* object.
*/
struct skjpeg_destination_mgr : jpeg_destination_mgr {
skjpeg_destination_mgr(SkWStream* stream);
SkWStream* fStream;
enum {
kBufferSize = 1024
};
uint8_t fBuffer[kBufferSize];
};
#endif
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