turbojpeg-jni.c - platform/external/libjpeg-turbo - Gitiles

 /*
  * Copyright (C)2011 D. R. Commander.  All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * - Redistributions of source code must retain the above copyright notice,
  *   this list of conditions and the following disclaimer.
  * - Redistributions in binary form must reproduce the above copyright notice,
  *   this list of conditions and the following disclaimer in the documentation
  *   and/or other materials provided with the distribution.
  * - Neither the name of the libjpeg-turbo Project nor the names of its
  *   contributors may be used to endorse or promote products derived from this
  *   software without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */

 #include "turbojpeg.h"
 #include <jni.h>
 #include "java/org_libjpegturbo_turbojpeg_TJCompressor.h"
 #include "java/org_libjpegturbo_turbojpeg_TJDecompressor.h"
 #include "java/org_libjpegturbo_turbojpeg_TJ.h"

 static const int _pixelsize[org_libjpegturbo_turbojpeg_TJ_NUMPFOPT]=
 	{3, 3, 4, 4, 4, 4, 1};

 static const int _flags[org_libjpegturbo_turbojpeg_TJ_NUMPFOPT]=
 	{0, TJ_BGR, 0, TJ_BGR, TJ_BGR|TJ_ALPHAFIRST, TJ_ALPHAFIRST, 0};

 #define _throw(msg) {  \
 	jclass _exccls=(*env)->FindClass(env, "java/lang/Exception");  \
 	if(!_exccls) goto bailout;  \
 	(*env)->ThrowNew(env, _exccls, msg);  \
 	goto bailout;  \
 }

 #define bailif0(f) {if(!(f)) goto bailout;}

 #define gethandle()  \
 	jclass _cls=(*env)->GetObjectClass(env, obj);  \
 	jfieldID _fid;  \
 	if(!_cls) goto bailout;  \
 	bailif0(_fid=(*env)->GetFieldID(env, _cls, "handle", "J"));  \
 	handle=(tjhandle)(long)(*env)->GetLongField(env, obj, _fid);  \

 JNIEXPORT jint JNICALL Java_org_libjpegturbo_turbojpeg_TJ_bufSize
 	(JNIEnv *env, jclass cls, jint width, jint height)
 {
 	jint retval=(jint)TJBUFSIZE(width, height);
 	if(retval==-1) _throw(tjGetErrorStr());

 	bailout:
 	return retval;
 }

 JNIEXPORT jint JNICALL Java_org_libjpegturbo_turbojpeg_TJ_bufSizeYUV
 	(JNIEnv *env, jclass cls, jint width, jint height, jint subsamp)
 {
 	jint retval=(jint)TJBUFSIZEYUV(width, height, subsamp);
 	if(retval==-1) _throw(tjGetErrorStr());

 	bailout:
 	return retval;
 }

 JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_init
 	(JNIEnv *env, jobject obj)
 {
 	jclass cls;
 	jfieldID fid;
 	tjhandle handle;

 	if((handle=tjInitCompress())==NULL)
 		_throw(tjGetErrorStr());

 	bailif0(cls=(*env)->GetObjectClass(env, obj));
 	bailif0(fid=(*env)->GetFieldID(env, cls, "handle", "J"));
 	(*env)->SetLongField(env, obj, fid, (long)handle);

 	bailout:
 	return;
 }

 JNIEXPORT jint JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_compress___3BIIII_3BIII
 	(JNIEnv *env, jobject obj, jbyteArray src, jint width, jint pitch,
 		jint height, jint pf, jbyteArray dst, jint jpegsubsamp, jint jpegqual,
 		jint flags)
 {
 	tjhandle handle=0;  int pixelsize;
 	unsigned long size=0;
 	unsigned char *srcbuf=NULL, *dstbuf=NULL;

 	gethandle();

 	if(pf<0 || pf>=org_libjpegturbo_turbojpeg_TJ_NUMPFOPT)
 		_throw("Invalid argument in compress()");
 	flags|=_flags[pf];
 	pixelsize=_pixelsize[pf];

 	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
 	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

 	if(tjCompress(handle, srcbuf, width, pitch, height, pixelsize, dstbuf,
 		&size, jpegsubsamp, jpegqual, flags)==-1)
 	{
 		(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 		(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 		_throw(tjGetErrorStr());
 	}

 	bailout:
 	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 	return (jint)size;
 }

 JNIEXPORT jint JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_compress___3IIIII_3BIII
 	(JNIEnv *env, jobject obj, jintArray src, jint width, jint pitch,
 		jint height, jint pf, jbyteArray dst, jint jpegsubsamp, jint jpegqual,
 		jint flags)
 {
 	tjhandle handle=0;
 	unsigned long size=0;
 	unsigned char *srcbuf=NULL, *dstbuf=NULL;

 	gethandle();

 	if(pf<0 || pf>=org_libjpegturbo_turbojpeg_TJ_NUMPFOPT)
 		_throw("Invalid argument in compress()");
 	if(_pixelsize[pf]!=sizeof(jint))
 		_throw("Pixel format must be 32-bit when compressing from an integer buffer.");
 	flags|=_flags[pf];

 	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
 	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

 	if(tjCompress(handle, srcbuf, width, pitch*sizeof(jint), height,
 		sizeof(jint),	dstbuf, &size, jpegsubsamp, jpegqual, flags)==-1)
 	{
 		(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 		(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 		_throw(tjGetErrorStr());
 	}

 	bailout:
 	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 	return (jint)size;
 }

 JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_encodeYUV___3BIIII_3BII
 	(JNIEnv *env, jobject obj, jbyteArray src, jint width, jint pitch,
 		jint height, jint pf, jbyteArray dst, jint jpegsubsamp, jint flags)
 {
 	tjhandle handle=0;  int pixelsize;
 	unsigned char *srcbuf=NULL, *dstbuf=NULL;

 	gethandle();

 	if(pf<0 || pf>=org_libjpegturbo_turbojpeg_TJ_NUMPFOPT)
 		_throw("Invalid argument in encodeYUV()");
 	flags|=_flags[pf];
 	pixelsize=_pixelsize[pf];

 	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
 	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

 	if(tjEncodeYUV(handle, srcbuf, width, pitch, height, pixelsize, dstbuf,
 		jpegsubsamp, flags)==-1)
 	{
 		(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 		(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 		_throw(tjGetErrorStr());
 	}

 	bailout:
 	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 	return;
 }

 JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_encodeYUV___3IIIII_3BII
 	(JNIEnv *env, jobject obj, jintArray src, jint width, jint pitch,
 		jint height, jint pf, jbyteArray dst, jint jpegsubsamp, jint flags)
 {
 	tjhandle handle=0;
 	unsigned char *srcbuf=NULL, *dstbuf=NULL;

 	gethandle();

 	if(pf<0 || pf>=org_libjpegturbo_turbojpeg_TJ_NUMPFOPT)
 		_throw("Invalid argument in compress()");
 	if(_pixelsize[pf]!=sizeof(jint))
 		_throw("Pixel format must be 32-bit when encoding from an integer buffer.");
 	flags|=_flags[pf];

 	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
 	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

 	if(tjEncodeYUV(handle, srcbuf, width, pitch*sizeof(jint), height,
 		sizeof(jint),	dstbuf, jpegsubsamp, flags)==-1)
 	{
 		(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 		(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 		_throw(tjGetErrorStr());
 	}

 	bailout:
 	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 	return;
 }

 JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_destroy
 	(JNIEnv *env, jobject obj)
 {
 	tjhandle handle=0;

 	gethandle();

 	if(tjDestroy(handle)==-1) _throw(tjGetErrorStr());
 	(*env)->SetLongField(env, obj, _fid, 0);

 	bailout:
 	return;
 }

 JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_init
 	(JNIEnv *env, jobject obj)
 {
 	jclass cls;
 	jfieldID fid;
 	tjhandle handle;

 	if((handle=tjInitDecompress())==NULL) _throw(tjGetErrorStr());

 	bailif0(cls=(*env)->GetObjectClass(env, obj));
 	bailif0(fid=(*env)->GetFieldID(env, cls, "handle", "J"));
 	(*env)->SetLongField(env, obj, fid, (long)handle);

 	bailout:
 	return;
 }

 JNIEXPORT jobjectArray JNICALL Java_org_libjpegturbo_turbojpeg_TJ_getScalingFactors
 	(JNIEnv *env, jclass cls)
 {
   jclass sfcls=NULL;  jfieldID fid=0;
 	tjscalingfactor *sf=NULL;  int n=0, i;
 	jobject sfobj=NULL;
 	jobjectArray sfjava=NULL;

 	if((sf=tjGetScalingFactors(&n))==NULL || n==0)
 		_throw(tjGetErrorStr());

 	bailif0(sfcls=(*env)->FindClass(env, "org/libjpegturbo/turbojpeg/TJ$ScalingFactor"));
 	bailif0(sfjava=(jobjectArray)(*env)->NewObjectArray(env, n, sfcls, 0));

 	for(i=0; i<n; i++)
 	{
 		bailif0(sfobj=(*env)->AllocObject(env, sfcls));
 		bailif0(fid=(*env)->GetFieldID(env, sfcls, "num", "I"));
 		(*env)->SetIntField(env, sfobj, fid, sf[i].num);
 		bailif0(fid=(*env)->GetFieldID(env, sfcls, "denom", "I"));
 		(*env)->SetIntField(env, sfobj, fid, sf[i].denom);
 		(*env)->SetObjectArrayElement(env, sfjava, i, sfobj);
 	}

 	bailout:
 	return sfjava;
 }

 JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_decompressHeader
 	(JNIEnv *env, jobject obj, jbyteArray src, jint size)
 {
 	tjhandle handle=0;
 	unsigned char *srcbuf=NULL;
 	int width=0, height=0, jpegsubsamp=-1;

 	gethandle();

 	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));

 	if(tjDecompressHeader2(handle, srcbuf, (unsigned long)size,
 		&width, &height, &jpegsubsamp)==-1)
 	{
 		(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 		_throw(tjGetErrorStr());
 	}
 	(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);  srcbuf=NULL;

 	bailif0(_fid=(*env)->GetFieldID(env, _cls, "jpegSubsamp", "I"));
 	(*env)->SetIntField(env, obj, _fid, jpegsubsamp);
 	bailif0(_fid=(*env)->GetFieldID(env, _cls, "jpegWidth", "I"));
 	(*env)->SetIntField(env, obj, _fid, width);
 	bailif0(_fid=(*env)->GetFieldID(env, _cls, "jpegHeight", "I"));
 	(*env)->SetIntField(env, obj, _fid, height);

 	bailout:
 	return;
 }

 JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_decompress___3BI_3BIIIII
 	(JNIEnv *env, jobject obj, jbyteArray src, jint size, jbyteArray dst,
 		jint width, jint pitch, jint height, jint pf, jint flags)
 {
 	tjhandle handle=0;  int pixelsize;
 	unsigned char *srcbuf=NULL, *dstbuf=NULL;

 	gethandle();

 	if(pf<0 || pf>=org_libjpegturbo_turbojpeg_TJ_NUMPFOPT)
 		_throw("Invalid argument in decompress()");
 	flags|=_flags[pf];
 	pixelsize=_pixelsize[pf];

 	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
 	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

 	if(tjDecompress(handle, srcbuf, (unsigned long)size, dstbuf, width, pitch,
 		height, pixelsize, flags)==-1)
 	{
 		(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 		(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 		_throw(tjGetErrorStr());
 	}

 	bailout:
 	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 	return;
 }

 JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_decompress___3BI_3IIIIII
 	(JNIEnv *env, jobject obj, jbyteArray src, jint size, jintArray dst,
 		jint width, jint pitch, jint height, jint pf, jint flags)
 {
 	tjhandle handle=0;
 	unsigned char *srcbuf=NULL, *dstbuf=NULL;

 	gethandle();

 	if(pf<0 || pf>=org_libjpegturbo_turbojpeg_TJ_NUMPFOPT)
 		_throw("Invalid argument in decompress()");
 	if(_pixelsize[pf]!=sizeof(jint))
 		_throw("Pixel format must be 32-bit when decompressing to an integer buffer.");
 	flags|=_flags[pf];

 	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
 	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

 	if(tjDecompress(handle, srcbuf, (unsigned long)size, dstbuf, width,
 		pitch*sizeof(jint), height, sizeof(jint), flags)==-1)
 	{
 		(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 		(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 		_throw(tjGetErrorStr());
 	}

 	bailout:
 	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 	return;
 }

 JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_decompressToYUV
 	(JNIEnv *env, jobject obj, jbyteArray src, jint size, jbyteArray dst,
 		jint flags)
 {
 	tjhandle handle=0;
 	unsigned char *srcbuf=NULL, *dstbuf=NULL;

 	gethandle();

 	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
 	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

 	if(tjDecompressToYUV(handle, srcbuf, (unsigned long)size, dstbuf, flags)==-1)
 	{
 		(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 		(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 		_throw(tjGetErrorStr());
 	}

 	bailout:
 	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
 	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
 	return;
 }

 JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_destroy
 	(JNIEnv *env, jobject obj)
 {
 	Java_org_libjpegturbo_turbojpeg_TJCompressor_destroy(env, obj);
 }
	/*
	* Copyright (C)2011 D. R. Commander. All Rights Reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are met:
	*
	* - Redistributions of source code must retain the above copyright notice,
	* this list of conditions and the following disclaimer.
	* - Redistributions in binary form must reproduce the above copyright notice,
	* this list of conditions and the following disclaimer in the documentation
	* and/or other materials provided with the distribution.
	* - Neither the name of the libjpeg-turbo Project nor the names of its
	* contributors may be used to endorse or promote products derived from this
	* software without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
	* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
	* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
	* POSSIBILITY OF SUCH DAMAGE.
	*/

	#include "turbojpeg.h"
	#include <jni.h>
	#include "java/org_libjpegturbo_turbojpeg_TJCompressor.h"
	#include "java/org_libjpegturbo_turbojpeg_TJDecompressor.h"
	#include "java/org_libjpegturbo_turbojpeg_TJ.h"

	static const int _pixelsize[org_libjpegturbo_turbojpeg_TJ_NUMPFOPT]=
	{3, 3, 4, 4, 4, 4, 1};

	static const int _flags[org_libjpegturbo_turbojpeg_TJ_NUMPFOPT]=
	{0, TJ_BGR, 0, TJ_BGR, TJ_BGR\|TJ_ALPHAFIRST, TJ_ALPHAFIRST, 0};

	#define _throw(msg) { \
	jclass _exccls=(*env)->FindClass(env, "java/lang/Exception"); \
	if(!_exccls) goto bailout; \
	(*env)->ThrowNew(env, _exccls, msg); \
	goto bailout; \
	}

	#define bailif0(f) {if(!(f)) goto bailout;}

	#define gethandle() \
	jclass _cls=(*env)->GetObjectClass(env, obj); \
	jfieldID _fid; \
	if(!_cls) goto bailout; \
	bailif0(_fid=(*env)->GetFieldID(env, _cls, "handle", "J")); \
	handle=(tjhandle)(long)(*env)->GetLongField(env, obj, _fid); \

	JNIEXPORT jint JNICALL Java_org_libjpegturbo_turbojpeg_TJ_bufSize
	(JNIEnv *env, jclass cls, jint width, jint height)
	{
	jint retval=(jint)TJBUFSIZE(width, height);
	if(retval==-1) _throw(tjGetErrorStr());

	bailout:
	return retval;
	}

	JNIEXPORT jint JNICALL Java_org_libjpegturbo_turbojpeg_TJ_bufSizeYUV
	(JNIEnv *env, jclass cls, jint width, jint height, jint subsamp)
	{
	jint retval=(jint)TJBUFSIZEYUV(width, height, subsamp);
	if(retval==-1) _throw(tjGetErrorStr());

	bailout:
	return retval;
	}

	JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_init
	(JNIEnv *env, jobject obj)
	{
	jclass cls;
	jfieldID fid;
	tjhandle handle;

	if((handle=tjInitCompress())==NULL)
	_throw(tjGetErrorStr());

	bailif0(cls=(*env)->GetObjectClass(env, obj));
	bailif0(fid=(*env)->GetFieldID(env, cls, "handle", "J"));
	(*env)->SetLongField(env, obj, fid, (long)handle);

	bailout:
	return;
	}

	JNIEXPORT jint JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_compress___3BIIII_3BIII
	(JNIEnv *env, jobject obj, jbyteArray src, jint width, jint pitch,
	jint height, jint pf, jbyteArray dst, jint jpegsubsamp, jint jpegqual,
	jint flags)
	{
	tjhandle handle=0; int pixelsize;
	unsigned long size=0;
	unsigned char srcbuf=NULL, dstbuf=NULL;

	gethandle();

	if(pf<0 \|\| pf>=org_libjpegturbo_turbojpeg_TJ_NUMPFOPT)
	_throw("Invalid argument in compress()");
	flags\|=_flags[pf];
	pixelsize=_pixelsize[pf];

	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

	if(tjCompress(handle, srcbuf, width, pitch, height, pixelsize, dstbuf,
	&size, jpegsubsamp, jpegqual, flags)==-1)
	{
	(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	_throw(tjGetErrorStr());
	}

	bailout:
	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	return (jint)size;
	}

	JNIEXPORT jint JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_compress___3IIIII_3BIII
	(JNIEnv *env, jobject obj, jintArray src, jint width, jint pitch,
	jint height, jint pf, jbyteArray dst, jint jpegsubsamp, jint jpegqual,
	jint flags)
	{
	tjhandle handle=0;
	unsigned long size=0;
	unsigned char srcbuf=NULL, dstbuf=NULL;

	gethandle();

	if(pf<0 \|\| pf>=org_libjpegturbo_turbojpeg_TJ_NUMPFOPT)
	_throw("Invalid argument in compress()");
	if(_pixelsize[pf]!=sizeof(jint))
	_throw("Pixel format must be 32-bit when compressing from an integer buffer.");
	flags\|=_flags[pf];

	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

	if(tjCompress(handle, srcbuf, width, pitch*sizeof(jint), height,
	sizeof(jint), dstbuf, &size, jpegsubsamp, jpegqual, flags)==-1)
	{
	(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	_throw(tjGetErrorStr());
	}

	bailout:
	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	return (jint)size;
	}

	JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_encodeYUV___3BIIII_3BII
	(JNIEnv *env, jobject obj, jbyteArray src, jint width, jint pitch,
	jint height, jint pf, jbyteArray dst, jint jpegsubsamp, jint flags)
	{
	tjhandle handle=0; int pixelsize;
	unsigned char srcbuf=NULL, dstbuf=NULL;

	gethandle();

	if(pf<0 \|\| pf>=org_libjpegturbo_turbojpeg_TJ_NUMPFOPT)
	_throw("Invalid argument in encodeYUV()");
	flags\|=_flags[pf];
	pixelsize=_pixelsize[pf];

	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

	if(tjEncodeYUV(handle, srcbuf, width, pitch, height, pixelsize, dstbuf,
	jpegsubsamp, flags)==-1)
	{
	(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	_throw(tjGetErrorStr());
	}

	bailout:
	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	return;
	}

	JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_encodeYUV___3IIIII_3BII
	(JNIEnv *env, jobject obj, jintArray src, jint width, jint pitch,
	jint height, jint pf, jbyteArray dst, jint jpegsubsamp, jint flags)
	{
	tjhandle handle=0;
	unsigned char srcbuf=NULL, dstbuf=NULL;

	gethandle();

	if(pf<0 \|\| pf>=org_libjpegturbo_turbojpeg_TJ_NUMPFOPT)
	_throw("Invalid argument in compress()");
	if(_pixelsize[pf]!=sizeof(jint))
	_throw("Pixel format must be 32-bit when encoding from an integer buffer.");
	flags\|=_flags[pf];

	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

	if(tjEncodeYUV(handle, srcbuf, width, pitch*sizeof(jint), height,
	sizeof(jint), dstbuf, jpegsubsamp, flags)==-1)
	{
	(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	_throw(tjGetErrorStr());
	}

	bailout:
	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	return;
	}

	JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_destroy
	(JNIEnv *env, jobject obj)
	{
	tjhandle handle=0;

	gethandle();

	if(tjDestroy(handle)==-1) _throw(tjGetErrorStr());
	(*env)->SetLongField(env, obj, _fid, 0);

	bailout:
	return;
	}

	JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_init
	(JNIEnv *env, jobject obj)
	{
	jclass cls;
	jfieldID fid;
	tjhandle handle;

	if((handle=tjInitDecompress())==NULL) _throw(tjGetErrorStr());

	bailif0(cls=(*env)->GetObjectClass(env, obj));
	bailif0(fid=(*env)->GetFieldID(env, cls, "handle", "J"));
	(*env)->SetLongField(env, obj, fid, (long)handle);

	bailout:
	return;
	}

	JNIEXPORT jobjectArray JNICALL Java_org_libjpegturbo_turbojpeg_TJ_getScalingFactors
	(JNIEnv *env, jclass cls)
	{
	jclass sfcls=NULL; jfieldID fid=0;
	tjscalingfactor *sf=NULL; int n=0, i;
	jobject sfobj=NULL;
	jobjectArray sfjava=NULL;

	if((sf=tjGetScalingFactors(&n))==NULL \|\| n==0)
	_throw(tjGetErrorStr());

	bailif0(sfcls=(*env)->FindClass(env, "org/libjpegturbo/turbojpeg/TJ$ScalingFactor"));
	bailif0(sfjava=(jobjectArray)(*env)->NewObjectArray(env, n, sfcls, 0));

	for(i=0; i<n; i++)
	{
	bailif0(sfobj=(*env)->AllocObject(env, sfcls));
	bailif0(fid=(*env)->GetFieldID(env, sfcls, "num", "I"));
	(*env)->SetIntField(env, sfobj, fid, sf[i].num);
	bailif0(fid=(*env)->GetFieldID(env, sfcls, "denom", "I"));
	(*env)->SetIntField(env, sfobj, fid, sf[i].denom);
	(*env)->SetObjectArrayElement(env, sfjava, i, sfobj);
	}

	bailout:
	return sfjava;
	}

	JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_decompressHeader
	(JNIEnv *env, jobject obj, jbyteArray src, jint size)
	{
	tjhandle handle=0;
	unsigned char *srcbuf=NULL;
	int width=0, height=0, jpegsubsamp=-1;

	gethandle();

	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));

	if(tjDecompressHeader2(handle, srcbuf, (unsigned long)size,
	&width, &height, &jpegsubsamp)==-1)
	{
	(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	_throw(tjGetErrorStr());
	}
	(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0); srcbuf=NULL;

	bailif0(_fid=(*env)->GetFieldID(env, _cls, "jpegSubsamp", "I"));
	(*env)->SetIntField(env, obj, _fid, jpegsubsamp);
	bailif0(_fid=(*env)->GetFieldID(env, _cls, "jpegWidth", "I"));
	(*env)->SetIntField(env, obj, _fid, width);
	bailif0(_fid=(*env)->GetFieldID(env, _cls, "jpegHeight", "I"));
	(*env)->SetIntField(env, obj, _fid, height);

	bailout:
	return;
	}

	JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_decompress___3BI_3BIIIII
	(JNIEnv *env, jobject obj, jbyteArray src, jint size, jbyteArray dst,
	jint width, jint pitch, jint height, jint pf, jint flags)
	{
	tjhandle handle=0; int pixelsize;
	unsigned char srcbuf=NULL, dstbuf=NULL;

	gethandle();

	if(pf<0 \|\| pf>=org_libjpegturbo_turbojpeg_TJ_NUMPFOPT)
	_throw("Invalid argument in decompress()");
	flags\|=_flags[pf];
	pixelsize=_pixelsize[pf];

	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

	if(tjDecompress(handle, srcbuf, (unsigned long)size, dstbuf, width, pitch,
	height, pixelsize, flags)==-1)
	{
	(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	_throw(tjGetErrorStr());
	}

	bailout:
	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	return;
	}

	JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_decompress___3BI_3IIIIII
	(JNIEnv *env, jobject obj, jbyteArray src, jint size, jintArray dst,
	jint width, jint pitch, jint height, jint pf, jint flags)
	{
	tjhandle handle=0;
	unsigned char srcbuf=NULL, dstbuf=NULL;

	gethandle();

	if(pf<0 \|\| pf>=org_libjpegturbo_turbojpeg_TJ_NUMPFOPT)
	_throw("Invalid argument in decompress()");
	if(_pixelsize[pf]!=sizeof(jint))
	_throw("Pixel format must be 32-bit when decompressing to an integer buffer.");
	flags\|=_flags[pf];

	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

	if(tjDecompress(handle, srcbuf, (unsigned long)size, dstbuf, width,
	pitch*sizeof(jint), height, sizeof(jint), flags)==-1)
	{
	(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	_throw(tjGetErrorStr());
	}

	bailout:
	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	return;
	}

	JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_decompressToYUV
	(JNIEnv *env, jobject obj, jbyteArray src, jint size, jbyteArray dst,
	jint flags)
	{
	tjhandle handle=0;
	unsigned char srcbuf=NULL, dstbuf=NULL;

	gethandle();

	bailif0(srcbuf=(*env)->GetPrimitiveArrayCritical(env, src, 0));
	bailif0(dstbuf=(*env)->GetPrimitiveArrayCritical(env, dst, 0));

	if(tjDecompressToYUV(handle, srcbuf, (unsigned long)size, dstbuf, flags)==-1)
	{
	(*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	(*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	_throw(tjGetErrorStr());
	}

	bailout:
	if(dstbuf) (*env)->ReleasePrimitiveArrayCritical(env, dst, dstbuf, 0);
	if(srcbuf) (*env)->ReleasePrimitiveArrayCritical(env, src, srcbuf, 0);
	return;
	}

	JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_destroy
	(JNIEnv *env, jobject obj)
	{
	Java_org_libjpegturbo_turbojpeg_TJCompressor_destroy(env, obj);
	}