void audiosource_alsa::loop_async_thread_play() {
config* cfg = config::Instance();
std::vector<short> buffer;
std::vector<float> bufferf;
snd_pcm_sframes_t frames;
int ret;
int buf_size = (cfg->frames_per_buff() > 0) ? cfg->frames_per_buff() : (get_sample_rate());
bool restart = true;
buffer.resize(buf_size);
bufferf.resize(buf_size);
if ((ret = snd_pcm_prepare(p_handle_)) < 0) {
std::cerr << "snd_pcm_prepare playback error: " << snd_strerror(ret) << std::endl;
close();
return;
}
/* FIXME Break the loop */
for (;;) {
if (restart) {
if (cfg->debug()) {
std::cerr << "ALSA restart" << std::endl;
}
restart = false;
snd_pcm_drop(c_handle_);
snd_pcm_prepare(c_handle_);
}
/*
for (size_t i = 0 ; i < bufferf.size(); ++i) {
bufferf[i] = 0;
}
*/
/* Write data to the soundcard */
get_listener()->output_callback(this, bufferf.data(), bufferf.size());
for (size_t i = 0 ; i < bufferf.size(); ++i) {
buffer[i] = static_cast<short>( bufferf[i] * 32767 );
}
for (;;) {
frames = snd_pcm_writei(p_handle_, buffer.data(), buffer.size());
if (frames == -EAGAIN) {
if (cfg->debug()) {
std::cerr << "ALSA EAGAIN" << std::endl;
}
continue;
} else {
if (frames < 0) {
if (cfg->debug()) {
std::cerr << "ALSA snd_pcm_readi < 0 = " << frames << std::endl;
}
restart = true;
}
break;
}
}
if (restart) {
continue;
}
if (frames != (snd_pcm_sframes_t)buffer.size()) {
if (cfg->debug()) {
std::cerr << "ALSA short write, expected " << buffer.size() << " wrote " << frames << std::endl;
}
}
}
close();
}
dmz::Boolean
dmz::AudioModuleFMOD::destroy_listener (const Handle ListenerHandle) {
Boolean result (False);
if (_system) {
ListenerStruct *listener = _listenerHandleTable.lookup (ListenerHandle);
if (listener) {
Int32 numListeners = _listenerHandleTable.get_count ();
if (listener->index == (numListeners - 1)) {
// Can simply reduce listener count in FMOD without rearranging indices
FMOD_RESULT fmodResult (FMOD_OK);
Boolean muteSuccess (True);
// FMOD requires at least one listener
if (numListeners > 1) {
fmodResult = _system->set3DNumListeners (numListeners - 1);
}
else {
// To simulate a lack of any listeners, mute all sounds
muteSuccess = set_mute_all_state (True);
}
if (_error_check ("Destroying a Listener", fmodResult) && muteSuccess) {
// Delete the listener
_listenerHandleTable.remove (ListenerHandle);
_listenerNameTable.remove (listener->Name);
_listenerIndexTable.remove (listener->index);
delete listener; listener = 0;
result = True;
}
}
else {
// FMOD only allows the adjustment of the total number of listeners, so
// we must swap the listener to be deleted with the last listener and
// then reduce the total number of listeners in FMOD
// Get last listener
ListenerStruct *lastListener = _listenerIndexTable.lookup (numListeners - 1);
if (lastListener) {
// Get the position and orientation of listener to be moved
Vector copiedPosition;
Matrix copiedOrientation;
Vector copiedVelocity;
if (get_listener (
listener->get_handle (),
copiedPosition,
copiedOrientation,
copiedVelocity)) {
// Change the FMOD listener index to the index of the listener to be
// deleted
lastListener->index = listener->index;
// Override the listener attributes in the index location of the deleted
// listener
if (set_listener (
lastListener->get_handle (),
copiedPosition,
copiedOrientation,
copiedVelocity)) {
// Reduce reduce listener count in FMOD to erase the old data
// of the now duplicated listener at the end.
FMOD_RESULT fmodResult (
_system->set3DNumListeners (numListeners - 1));
if (_error_check ("Destroying a Listener", fmodResult)) {
// Delete the listener
_listenerHandleTable.remove (ListenerHandle);
_listenerNameTable.remove (listener->Name);
_listenerIndexTable.remove (listener->index);
delete listener; listener = 0;
result = True;
}
}
}
}
}
}
}
return result;
}
void audiosource_alsa::loop_async_thread_rec() {
config* cfg = config::Instance();
std::vector<short> buffer;
std::vector<float> bufferf;
snd_pcm_sframes_t frames;
int ret;
int buf_size = (cfg->frames_per_buff() > 0) ? cfg->frames_per_buff() : (get_sample_rate());
bool restart = true;
buffer.resize(buf_size);
bufferf.resize(buf_size);
if ((ret = snd_pcm_prepare(c_handle_)) < 0) {
std::cerr << "snd_pcm_prepare capture error: " << snd_strerror(ret) << std::endl;
close();
return;
}
/* FIXME Break the loop */
for (;;) {
if (restart) {
if (cfg->debug()) {
std::cerr << "ALSA restart" << std::endl;
}
restart = false;
snd_pcm_drop(c_handle_);
snd_pcm_prepare(c_handle_);
}
/* Read data from the soundcard */
for (;;) {
frames = snd_pcm_readi(c_handle_, buffer.data(), buffer.size());
if (frames == -EAGAIN) {
if (cfg->debug()) {
std::cerr << "ALSA EAGAIN" << std::endl;
}
continue;
} else {
if (frames < 0) {
if (cfg->debug()) {
std::cerr << "ALSA snd_pcm_readi < 0 = " << frames << std::endl;
}
restart = true;
}
break;
}
}
if (restart) {
continue;
}
if (cfg->debug() && frames != (snd_pcm_sframes_t)buffer.size()) {
std::cerr << "ALSA short read, expected " << buffer.size() << " wrote " << frames << std::endl;
}
for (int i = 0; i < frames; ++i) {
bufferf[i] = buffer[i] * 1.0 / 32768.0f;
}
get_listener()->input_callback(this, bufferf.data(), frames);
}
}
