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/*
* libopenraw - jfifcontainer.h
*
* Copyright (C) 2006-2007 Hubert Figuiere
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
/**
* @brief a JPEG container
*/
#ifndef _JFIFCONTAINER_H_
#define _JFIFCONTAINER_H_
#include <setjmp.h>
#include <cstdio>
namespace JPEG {
#include <jpeglib.h>
}
#include <libopenraw/types.h>
#include <libopenraw/consts.h>
#include "exception.h"
#include "rawcontainer.h"
namespace OpenRaw {
class BitmapData;
namespace Internals {
class JFIFContainer
: public RawContainer
{
public:
JFIFContainer(IO::Stream *file, off_t offset);
/** destructor */
virtual ~JFIFContainer();
bool getDimensions(uint32_t &x, uint32_t &y);
bool getDecompressedData(BitmapData &data);
/* libjpeg callbacks j_ is the prefix for these callbacks */
static void j_init_source(JPEG::j_decompress_ptr cinfo);
static JPEG::boolean j_fill_input_buffer(JPEG::j_decompress_ptr cinfo);
static void j_skip_input_data(JPEG::j_decompress_ptr cinfo,
long num_bytes);
// static void j_jpeg_resync_to_restart(JPEG::j_decompress_ptr cinfo);
static void j_term_source(JPEG::j_decompress_ptr cinfo);
static void j_error_exit(JPEG::j_common_ptr cinfo);
private:
int _loadHeader();
struct JPEG::jpeg_decompress_struct m_cinfo;
struct JPEG::jpeg_error_mgr m_jerr;
jmp_buf m_jpegjmp;
bool m_headerLoaded;
};
}
}
#endif
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