bool PdBase::writeArray(const std::string& arrayName, std::vector<float>& source, int writeLen, int offset) {
int arrayLen = libpd_arraysize(arrayName.c_str());
if(arrayLen < 0) {
cerr << "Pd: Cannot write to unknown array \"" << arrayName << "\"" << endl;
return false;
}
// full array len?
if(writeLen < 0) {
writeLen = arrayLen;
}
// check write len
else if(writeLen > arrayLen) {
cerr << "Pd: Given write len " << writeLen << " > len " << arrayLen
<< " of array \"" << arrayName << "\"" << endl;
return false;
}
// check offset
if(offset+writeLen > arrayLen) {
cerr << "Pd: Given write len and offset > len " << writeLen
<< " of array \"" << arrayName << "\"" << endl;
return false;
}
if(libpd_write_array(arrayName.c_str(), offset, &source[0], writeLen) < 0) {
cerr << "Pd: libpd_write_array failed for array \"" << arrayName << "\"" << endl;
return false;
}
return true;
}
//----------------------------------------------------------
int PdBase::arraySize(const std::string& arrayName) {
int len = libpd_arraysize(arrayName.c_str());;
if(len < 0) {
cerr << "Pd: Cannot get size of unknown array \"" << arrayName << "\"" << endl;
return 0;
}
return len;
}
JNIEXPORT jint JNICALL Java_org_puredata_core_PdBase_arraySize
(JNIEnv *env, jclass cls, jstring jname) {
if (!jname) return -2;
const char *cname = (char *) (*env)->GetStringUTFChars(env, jname, NULL);
pthread_mutex_lock(&mutex);
int result = libpd_arraysize(cname);
pthread_mutex_unlock(&mutex);
(*env)->ReleaseStringUTFChars(env, jname, cname);
return result;
}
void PdBase::clearArray(const std::string& arrayName, int value) {
int arrayLen = libpd_arraysize(arrayName.c_str());
if(arrayLen < 0) {
cerr << "Pd: Cannot clear unknown array \"" << arrayName << "\"" << endl;
return;
}
std::vector<float> array;
array.resize(arrayLen, value);
if(libpd_write_array(arrayName.c_str(), 0, &array[0], arrayLen) < 0) {
cerr << "Pd: libpd_write_array failed while clearing array \""
<< arrayName << "\"" << endl;
}
}
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;
}
