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Implement custom filter callback in Java

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git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@707 632fc199-4ca6-4c93-a231-07263d6284db
This commit is contained in:
DRC
2011-09-20 05:02:19 +00:00
parent 835b76fb65
commit f546711076
39 changed files with 721 additions and 113 deletions
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80
turbojpeg-jni.c
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@@ -487,6 +487,70 @@ JNIEXPORT void JNICALL Java_org_libjpegturbo_turbojpeg_TJTransformer_init
return;
}
typedef struct _JNICustomFilterParams
{
JNIEnv *env;
jobject tobj;
jobject cfobj;
} JNICustomFilterParams;
static int JNICustomFilter(short *coeffs, tjregion arrayRegion,
tjregion planeRegion, int componentIndex, int transformIndex,
tjtransform *transform)
{
JNICustomFilterParams *params=(JNICustomFilterParams *)transform->data;
JNIEnv *env=params->env;
jobject tobj=params->tobj, cfobj=params->cfobj;
jobject arrayRegionObj, planeRegionObj, bufobj, borobj;
jclass cls; jmethodID mid; jfieldID fid;
bailif0(bufobj=(*env)->NewDirectByteBuffer(env, coeffs,
sizeof(short)*arrayRegion.w*arrayRegion.h));
bailif0(cls=(*env)->FindClass(env, "java/nio/ByteOrder"));
bailif0(mid=(*env)->GetStaticMethodID(env, cls, "nativeOrder",
"()Ljava/nio/ByteOrder;"));
bailif0(borobj=(*env)->CallStaticObjectMethod(env, cls, mid));
bailif0(cls=(*env)->GetObjectClass(env, bufobj));
bailif0(mid=(*env)->GetMethodID(env, cls, "order",
"(Ljava/nio/ByteOrder;)Ljava/nio/ByteBuffer;"));
(*env)->CallObjectMethod(env, bufobj, mid, borobj);
bailif0(mid=(*env)->GetMethodID(env, cls, "asShortBuffer",
"()Ljava/nio/ShortBuffer;"));
bailif0(bufobj=(*env)->CallObjectMethod(env, bufobj, mid));
bailif0(cls=(*env)->FindClass(env, "java/awt/Rectangle"));
bailif0(arrayRegionObj=(*env)->AllocObject(env, cls));
bailif0(fid=(*env)->GetFieldID(env, cls, "x", "I"));
(*env)->SetIntField(env, arrayRegionObj, fid, arrayRegion.x);
bailif0(fid=(*env)->GetFieldID(env, cls, "y", "I"));
(*env)->SetIntField(env, arrayRegionObj, fid, arrayRegion.y);
bailif0(fid=(*env)->GetFieldID(env, cls, "width", "I"));
(*env)->SetIntField(env, arrayRegionObj, fid, arrayRegion.w);
bailif0(fid=(*env)->GetFieldID(env, cls, "height", "I"));
(*env)->SetIntField(env, arrayRegionObj, fid, arrayRegion.h);
bailif0(planeRegionObj=(*env)->AllocObject(env, cls));
bailif0(fid=(*env)->GetFieldID(env, cls, "x", "I"));
(*env)->SetIntField(env, planeRegionObj, fid, planeRegion.x);
bailif0(fid=(*env)->GetFieldID(env, cls, "y", "I"));
(*env)->SetIntField(env, planeRegionObj, fid, planeRegion.y);
bailif0(fid=(*env)->GetFieldID(env, cls, "width", "I"));
(*env)->SetIntField(env, planeRegionObj, fid, planeRegion.w);
bailif0(fid=(*env)->GetFieldID(env, cls, "height", "I"));
(*env)->SetIntField(env, planeRegionObj, fid, planeRegion.h);
bailif0(cls=(*env)->GetObjectClass(env, cfobj));
bailif0(mid=(*env)->GetMethodID(env, cls, "customFilter",
"(Ljava/nio/ShortBuffer;Ljava/awt/Rectangle;Ljava/awt/Rectangle;IILorg/libjpegturbo/turbojpeg/TJTransform;)V"));
(*env)->CallVoidMethod(env, cfobj, mid, bufobj, arrayRegionObj,
planeRegionObj, componentIndex, transformIndex, tobj);
return 0;
bailout:
return -1;
}
JNIEXPORT jintArray JNICALL Java_org_libjpegturbo_turbojpeg_TJTransformer_transform
(JNIEnv *env, jobject obj, jbyteArray jsrcBuf, jint jpegSize,
jobjectArray dstobjs, jobjectArray tobjs, jint flags)
@@ -497,6 +561,7 @@ JNIEXPORT jintArray JNICALL Java_org_libjpegturbo_turbojpeg_TJTransformer_transf
jbyteArray *jdstBufs=NULL;
int jpegWidth=0, jpegHeight=0, jpegSubsamp;
jintArray jdstSizes=0; jint *dstSizesi=NULL;
JNICustomFilterParams *params=NULL;
gethandle();
@@ -521,15 +586,19 @@ JNIEXPORT jintArray JNICALL Java_org_libjpegturbo_turbojpeg_TJTransformer_transf
_throw("Memory allocation failure");
if((t=(tjtransform *)malloc(sizeof(tjtransform)*n))==NULL)
_throw("Memory allocation failure");
if((params=(JNICustomFilterParams *)malloc(sizeof(JNICustomFilterParams)*n))
==NULL)
_throw("Memory allocation failure");
for(i=0; i<n; i++)
{
dstBufs[i]=NULL; jdstBufs[i]=NULL; dstSizes[i]=0;
memset(&t[i], 0, sizeof(tjtransform));
memset(&params[i], 0, sizeof(JNICustomFilterParams));
}
for(i=0; i<n; i++)
{
jobject tobj;
jobject tobj, cfobj;
bailif0(tobj=(*env)->GetObjectArrayElement(env, tobjs, i));
bailif0(_cls=(*env)->GetObjectClass(env, tobj));
@@ -545,6 +614,15 @@ JNIEXPORT jintArray JNICALL Java_org_libjpegturbo_turbojpeg_TJTransformer_transf
t[i].r.w=(*env)->GetIntField(env, tobj, _fid);
bailif0(_fid=(*env)->GetFieldID(env, _cls, "height", "I"));
t[i].r.h=(*env)->GetIntField(env, tobj, _fid);
t[i].customFilter=JNICustomFilter;
bailif0(_fid=(*env)->GetFieldID(env, _cls, "cf",
"Lorg/libjpegturbo/turbojpeg/TJCustomFilter;"));
bailif0(cfobj=(*env)->GetObjectField(env, tobj, _fid));
params[i].env=env;
params[i].tobj=tobj;
params[i].cfobj=cfobj;
t[i].data=(void *)&params[i];
}
bailif0(jpegBuf=(*env)->GetPrimitiveArrayCritical(env, jsrcBuf, 0));