int
sa_stream_open(sa_stream_t *s) {
if (s == NULL) {
return SA_ERROR_NO_INIT;
}
if (s->output_unit != NULL) {
return SA_ERROR_INVALID;
}
JNIEnv *jenv = GetJNIForThread();
if (!jenv)
return SA_ERROR_NO_DEVICE;
if ((*jenv)->PushLocalFrame(jenv, 4)) {
return SA_ERROR_OOM;
}
s->at_class = init_jni_bindings(jenv);
int32_t chanConfig = s->channels == 1 ?
CHANNEL_OUT_MONO : CHANNEL_OUT_STEREO;
jobject obj =
(*jenv)->NewObject(jenv, s->at_class, at.constructor,
STREAM_MUSIC,
s->rate,
chanConfig,
ENCODING_PCM_16BIT,
s->bufferSize,
MODE_STREAM);
jthrowable exception = (*jenv)->ExceptionOccurred(jenv);
if (exception) {
(*jenv)->ExceptionDescribe(jenv);
(*jenv)->ExceptionClear(jenv);
(*jenv)->DeleteGlobalRef(jenv, s->at_class);
(*jenv)->PopLocalFrame(jenv, NULL);
return SA_ERROR_INVALID;
}
if (!obj) {
(*jenv)->DeleteGlobalRef(jenv, s->at_class);
(*jenv)->PopLocalFrame(jenv, NULL);
return SA_ERROR_OOM;
}
s->output_unit = (*jenv)->NewGlobalRef(jenv, obj);
(*jenv)->PopLocalFrame(jenv, NULL);
ALOG("%x - New stream %d %d", s, s->rate, s->channels);
return SA_SUCCESS;
}
ANPAudioTrack*
anp_audio_newTrack(uint32_t sampleRate, // sampling rate in Hz
ANPSampleFormat format,
int channelCount, // MONO=1, STEREO=2
ANPAudioCallbackProc proc,
void* user)
{
ANPAudioTrack *s = (ANPAudioTrack*) malloc(sizeof(ANPAudioTrack));
if (s == NULL) {
return NULL;
}
JNIEnv *jenv = GetJNIForThread();
if (!jenv)
return NULL;
s->at_class = init_jni_bindings(jenv);
s->rate = sampleRate;
s->channels = channelCount;
s->bufferSize = s->rate * s->channels;
s->isStopped = true;
s->keepGoing = false;
s->user = user;
s->proc = proc;
s->format = format;
int jformat;
switch (format) {
case kPCM16Bit_ANPSampleFormat:
jformat = ENCODING_PCM_16BIT;
break;
case kPCM8Bit_ANPSampleFormat:
jformat = ENCODING_PCM_8BIT;
break;
default:
LOG("Unknown audio format. defaulting to 16bit.");
jformat = ENCODING_PCM_16BIT;
break;
}
int jChannels;
switch (channelCount) {
case 1:
jChannels = CHANNEL_OUT_MONO;
break;
case 2:
jChannels = CHANNEL_OUT_STEREO;
break;
default:
LOG("Unknown channel count. defaulting to mono.");
jChannels = CHANNEL_OUT_MONO;
break;
}
mozilla::AutoLocalJNIFrame autoFrame(jenv);
jobject obj = jenv->NewObject(s->at_class,
at.constructor,
STREAM_MUSIC,
s->rate,
jChannels,
jformat,
s->bufferSize,
MODE_STREAM);
if (autoFrame.CheckForException() || obj == NULL) {
jenv->DeleteGlobalRef(s->at_class);
free(s);
return NULL;
}
jint state = jenv->CallIntMethod(obj, at.getstate);
if (autoFrame.CheckForException() || state == STATE_UNINITIALIZED) {
jenv->DeleteGlobalRef(s->at_class);
free(s);
return NULL;
}
s->output_unit = jenv->NewGlobalRef(obj);
return s;
}
