public final boolean init(VSDFile vf, BufferMode mode) {
AudioManager am = jmri.InstanceManager.getDefault(jmri.AudioManager.class);
if (!initialized) {
try {
sound_src = (AudioSource) am.provideAudio(SrcSysNamePrefix + system_name);
sound_src.setUserName(BufUserNamePrefix + user_name);
setLooped(false);
if (mode == BufferMode.BOUND_MODE) {
sound_buf = (AudioBuffer) am.provideAudio(BufSysNamePrefix + system_name);
sound_buf.setUserName(BufUserNamePrefix + user_name);
if (vf == null) {
sound_buf.setURL(vsd_file_base + filename);
} else {
java.io.InputStream ins = vf.getInputStream(filename);
if (ins != null) {
sound_buf.setInputStream(ins);
} else {
return (false);
}
}
sound_src.setAssignedBuffer(sound_buf);
setLength();
}
} catch (AudioException | IllegalArgumentException ex) {
log.warn("Problem creating SoundBite: " + ex);
}
}
return (true);
}
public static long calcLength(AudioBuffer buf) {
// Assumes later getBuffer() will find the buffer from AudioManager instead
// of the current local reference... that's why I'm not directly using sound_buf here.
// Required buffer functions not yet implemented
long num_frames;
int frequency;
if (buf != null) {
num_frames = buf.getLength();
frequency = buf.getFrequency();
} else {
// No buffer attached!
num_frames = 0;
frequency = 0;
}
/*
long num_frames = 1;
long frequency = 125;
*/
if (frequency <= 0) {
// Protect against divide-by-zero errors
return (0l);
} else {
return ((1000 * num_frames) / frequency);
}
}
public void queueBuffer(AudioBuffer b) {
if (bufferMode == BufferMode.QUEUE_MODE) {
if (b == null) {
log.debug("queueAudioBuffer with null buffer input");
return;
}
if (sound_src == null) {
log.debug("queueAudioBuffer with null sound_src");
return;
}
log.debug("Queueing Buffer: " + b.getSystemName());
sound_src.queueBuffer(b);
} else {
log.warn("Attempted to Queue buffer to a Bound SoundBite.");
}
}
public void setURL(String filename) {
this.filename = filename;
sound_buf.setURL(vsd_file_base + filename);
}