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/*
* 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"
#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 jlong JNICALL Java_org_libjpegturbo_turbojpeg_TJ_bufSize
(JNIEnv *env, jclass cls, jint width, jint height)
{
return TJBUFSIZE(width, height);
}
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 jlong JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_compress
(JNIEnv *env, jobject obj, jbyteArray src, jint width, jint pitch,
jint height, jint pixelsize, jbyteArray dst, jint jpegsubsamp,
jint jpegqual, jint flags)
{
tjhandle handle=0;
unsigned long size=0;
unsigned char *srcbuf=NULL, *dstbuf=NULL;
gethandle();
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 size;
}
JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJCompressor_destroy
(JNIEnv *env, jobject obj)
{
tjhandle handle=0;
gethandle();
if(tjDestroy(handle)==-1) _throw(tjGetErrorStr());
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 jobject JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_decompressHeader
(JNIEnv *env, jobject obj, jbyteArray src, jlong size)
{
jclass jhicls=NULL;
jfieldID fid;
tjhandle handle=0;
unsigned char *srcbuf=NULL;
int width=0, height=0, jpegsubsamp=-1;
jobject jhiobj=NULL;
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(jhicls=(*env)->FindClass(env, "org/libjpegturbo/turbojpeg/TJHeaderInfo"));
bailif0(jhiobj=(*env)->AllocObject(env, jhicls));
bailif0(fid=(*env)->GetFieldID(env, jhicls, "subsamp", "I"));
(*env)->SetIntField(env, jhiobj, fid, jpegsubsamp);
bailif0(fid=(*env)->GetFieldID(env, jhicls, "width", "I"));
(*env)->SetIntField(env, jhiobj, fid, width);
bailif0(fid=(*env)->GetFieldID(env, jhicls, "height", "I"));
(*env)->SetIntField(env, jhiobj, fid, height);
bailout:
return jhiobj;
}
JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJDecompressor_decompress
(JNIEnv *env, jobject obj, jbyteArray src, jlong size, jbyteArray dst,
jint pitch, jint pixelsize, jint scale_num, jint scale_denom, 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(tjDecompress2(handle, srcbuf, (unsigned long)size, dstbuf, pitch,
pixelsize, scale_num, scale_denom, 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);
}
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