1 files changed, 159 insertions, 0 deletions
diff --git a/src/MSPBuffer.c b/src/MSPBuffer.c
new file mode 100644
index 0000000..084fdf3
--- /dev/null
+++ b/src/MSPBuffer.c
@@ -0,0 +1,159 @@
+#include "native_classes.h"
+#include "type_handler.h"
+#include "pdj.h"
+
+
+static t_garray *getArray(JNIEnv *env, jstring name) {
+	t_symbol *s = jstring2symbol(env, name);
+	t_garray *ret = (t_garray *)pd_findbyclass(s, garray_class);
+
+  	if ( ret == NULL ) {
+  		post("pdj: array %s not found", s->s_name);
+  		return NULL;
+  	}
+
+	return ret;	
+}
+
+
+JNIEXPORT jlong JNICALL Java_com_cycling74_msp_MSPBuffer_getSize
+  (JNIEnv *env, jclass cls, jstring name) {
+	t_garray *array = getArray(env, name);  	
+  	
+  	if ( array == NULL )
+  		return -1;
+
+	return garray_npoints(array);	
+}
+
+
+JNIEXPORT jfloatArray JNICALL Java_com_cycling74_msp_MSPBuffer_peek
+  (JNIEnv *env , jclass cls, jstring name) {
+	t_garray *array = getArray(env, name);  	
+	t_sample *vec;
+	jfloatArray ret;
+  	int size;
+  	
+  	if ( array == NULL )
+  		return NULL;
+  	
+  	if ( ! garray_getfloatarray(array, &size, &vec) )
+  		return NULL;
+  	
+	ret = (*env)->NewFloatArray(env, size);
+	
+  	if ( ret == NULL ) {
+  		SHOWEXC;
+  		return NULL;
+  	}
+  		
+  	(*env)->SetFloatArrayRegion(env, ret, 0, size, (jfloat *) vec);
+
+  	return ret;
+}
+
+
+JNIEXPORT void JNICALL Java_com_cycling74_msp_MSPBuffer_poke
+  (JNIEnv *env, jclass cls, jstring name, jfloatArray values) {
+	t_garray *array = getArray(env, name);  	
+	t_sample *vec;
+	jsize jarray_length;
+  	int size;
+
+	if ( array == NULL )
+		return;
+		
+  	if ( ! garray_getfloatarray(array, &size, &vec) )
+  		return;
+	 	
+	jarray_length = (*env)->GetArrayLength(env, values);
+	
+	if ( jarray_length < size ) {
+		error("pdj: warning: array too short");
+	} else {
+		size = jarray_length;
+	}
+	
+	(*env)->GetFloatArrayRegion(env, values, 0, size, vec);
+	garray_redraw(array);
+}
+
+
+JNIEXPORT void JNICALL Java_com_cycling74_msp_MSPBuffer_setSize
+  (JNIEnv *env, jclass cls, jstring name, jint channel, jlong size) {
+  	t_garray *array = getArray(env, name);
+  	
+  	if ( array == NULL )
+  		return;
+  	
+	garray_resize(array, size);  	
+}
+
+
+JNIEXPORT jfloatArray JNICALL Java_com_cycling74_msp_MSPBuffer_getArray
+  (JNIEnv *env, jclass cls, jstring name, jlong from, jlong arraySize) {
+	t_garray *array = getArray(env, name);  	
+	t_sample *vec;
+	jfloatArray ret;
+  	int size, ifrom = (int) from, iarraySize = (int) arraySize;
+  	
+  	if ( array == NULL )
+  		return NULL;
+  	
+  	if ( ! garray_getfloatarray(array, &size, &vec) )
+  		return NULL;
+  	
+  	if ( iarraySize != -1 ) {
+	  	if ( size < ifrom ) {
+	  		error("pdj: array is shorter than the starting point");
+	  		return NULL;
+	  	}
+  	
+	  	if ( size < ifrom + iarraySize ) {
+	  		error("pdj: array is not big enough to fill the array");
+	  		return NULL;
+	  	}
+	  	size = iarraySize;
+  	}
+  	
+	ret = (*env)->NewFloatArray(env, size);
+  	if ( ret == NULL ) {
+  		SHOWEXC;
+  		return NULL;
+  	}
+  	
+  	vec += ifrom;
+  	(*env)->SetFloatArrayRegion(env, ret, 0, size, (jfloat *) vec);
+
+  	return ret;
+}
+
+
+JNIEXPORT void JNICALL Java_com_cycling74_msp_MSPBuffer_setArray
+  (JNIEnv *env, jclass cls, jstring name, jlong from, jfloatArray values) {
+	t_garray *array = getArray(env, name);  	
+	t_sample *vec;
+	jsize jarray_length;
+  	int size, ifrom = from;
+
+	if ( array == NULL )
+		return;
+		
+  	if ( ! garray_getfloatarray(array, &size, &vec) )
+  		return;
+  		
+	if ( size < from ) {
+		error("pdj: array too short from starting point");
+		return;
+	}
+	jarray_length = (*env)->GetArrayLength(env, values);
+	
+	if ( jarray_length + ifrom > size ) {
+		error("pdj: warning: array too short from java array size");
+		return;
+	} 
+
+	vec += from;	
+	(*env)->GetFloatArrayRegion(env, values, 0, jarray_length, vec);
+	garray_redraw(array);
+}