JNIEXPORT jint JNICALL Java_org_puredata_core_PdBase_readArrayNative
(JNIEnv *env, jclass cls, jfloatArray jdest, jint destOffset,
jstring jsrc, jint srcOffset, jint n) {
if (!jdest || !jsrc) return -3;
float *pdest = (*env)->GetFloatArrayElements(env, jdest, NULL);
const char *csrc = (char *) (*env)->GetStringUTFChars(env, jsrc, NULL);
pthread_mutex_lock(&mutex);
int result = libpd_read_array(pdest + destOffset, csrc, srcOffset, n);
pthread_mutex_unlock(&mutex);
(*env)->ReleaseStringUTFChars(env, jsrc, csrc);
(*env)->ReleaseFloatArrayElements(env, jdest, pdest, 0);
return result;
}
bool PdBase::readArray(const std::string& arrayName, std::vector<float>& dest, int readLen, int offset) {
_LOCK();
int arrayLen = libpd_arraysize(arrayName.c_str());
_UNLOCK();
if(arrayLen < 0) {
cerr << "Pd: Cannot read unknown array \"" << arrayName << "\"" << endl;
return false;
}
// full array len?
if(readLen < 0) {
readLen = arrayLen;
}
// check read len
else if(readLen > arrayLen) {
cerr << "Pd: Given read len " << readLen << " > len "
<< arrayLen << " of array \"" << arrayName << "\"" << endl;
return false;
}
// check offset
if(offset+readLen > arrayLen) {
cerr << "Pd: Given read len and offset > len " << readLen
<< " of array \"" << arrayName << "\"" << endl;
return false;
}
// resize if necessary
if(dest.size() != readLen) {
dest.resize(readLen, 0);
}
_LOCK();
if(libpd_read_array(&dest[0], arrayName.c_str(), offset, readLen) < 0) {
cerr << "Pd: libpd_read_array failed for array \""
<< arrayName << "\"" << endl;
_UNLOCK();
return false;
}
_UNLOCK();
return true;
}
