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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#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, bool ownStream);
~skjpeg_source_mgr();
SkStream* fStream;
void* fMemoryBase;
size_t fMemoryBaseSize;
bool fUnrefStream;
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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