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/**
* @file llimagej2ckdu.h
* @brief This is an implementation of JPEG2000 encode/decode using Kakadu
*
* $LicenseInfo:firstyear=2010&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* 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;
* version 2.1 of the License only.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLIMAGEJ2CKDU_H
#define LL_LLIMAGEJ2CKDU_H
#include "llimagej2c.h"
//
// KDU core header files
//
#define KDU_NO_THREADS
#include "kdu_elementary.h"
#include "kdu_messaging.h"
#include "kdu_params.h"
#define kdu_xxxx "kdu_compressed.h"
#include "include_kdu_xxxx.h"
#include "kdu_sample_processing.h"
#include <boost/scoped_ptr.hpp>
#include <boost/noncopyable.hpp>
class LLKDUDecodeState;
class LLKDUMemSource;
class LLImageJ2CKDU : public LLImageJ2CImpl
{
public:
enum ECodeStreamMode
{
MODE_FAST = 0,
MODE_RESILIENT = 1,
MODE_FUSSY = 2
};
LLImageJ2CKDU();
virtual ~LLImageJ2CKDU();
protected:
virtual bool getMetadata(LLImageJ2C &base);
virtual bool decodeImpl(LLImageJ2C &base, LLImageRaw &raw_image, F32 decode_time, S32 first_channel, S32 max_channel_count);
virtual bool encodeImpl(LLImageJ2C &base, const LLImageRaw &raw_image, const char* comment_text, F32 encode_time=0.0,
bool reversible=false);
virtual bool initDecode(LLImageJ2C &base, LLImageRaw &raw_image, int discard_level = -1, int* region = NULL);
virtual bool initEncode(LLImageJ2C &base, LLImageRaw &raw_image, int blocks_size = -1, int precincts_size = -1, int levels = 0);
virtual std::string getEngineInfo() const;
private:
bool initDecode(LLImageJ2C &base, LLImageRaw &raw_image, F32 decode_time, ECodeStreamMode mode, S32 first_channel, S32 max_channel_count, int discard_level = -1, int* region = NULL);
void setupCodeStream(LLImageJ2C &base, bool keep_codestream, ECodeStreamMode mode);
void cleanupCodeStream();
// This method was public, but the only call to it is commented out in our
// own initDecode() method. I (nat 2016-08-04) don't know what it does or
// why. Even if it should be uncommented, it should probably still be
// private.
// void findDiscardLevelsBoundaries(LLImageJ2C &base);
// Helper class to hold a kdu_codestream, which is a handle to the
// underlying implementation object. When CodeStreamHolder is reset() or
// destroyed, it calls kdu_codestream::destroy() -- which kdu_codestream
// itself does not.
//
// Call through it like a smart pointer using operator->().
//
// Every RAII class must be noncopyable. For this we don't need move
// support.
class CodeStreamHolder: public boost::noncopyable
{
public:
~CodeStreamHolder()
{
reset();
}
void reset()
{
if (mCodeStream.exists())
{
mCodeStream.destroy();
}
}
// for those few times when you need a raw kdu_codestream*
kdu_core::kdu_codestream* get() { return &mCodeStream; }
kdu_core::kdu_codestream* operator->() { return &mCodeStream; }
private:
kdu_core::kdu_codestream mCodeStream;
};
// Encode variable
std::unique_ptr<LLKDUMemSource> mInputp;
CodeStreamHolder mCodeStreamp;
std::unique_ptr<kdu_core::kdu_coords> mTPosp; // tile position
std::unique_ptr<kdu_core::kdu_dims> mTileIndicesp;
int mBlocksSize;
int mPrecinctsSize;
int mLevels;
// Temporary variables for in-progress decodes...
// We don't own this LLImageRaw. We're simply pointing to an instance
// passed into initDecode().
LLImageRaw *mRawImagep;
std::unique_ptr<LLKDUDecodeState> mDecodeState;
};
#endif
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