int main(void)
{
//=============================================================================
//Variables and Data Structures
//=============================================================================
USERDATA data;
AUDIOSTREAM outStream;
int i;
//=============================================================================
//STEP 0 - Preliminary set-up and initialisation
//=============================================================================
//Initialise sinusoidal wavetable
for( i=0; i<TABLE_SIZE; i++ )
{
data.sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
}
data.left_phase = data.right_phase = 0;
//Initialise message of data structure
sprintf( data.message, "No Message" );
//Set up AUDIOSTREAM structure
outStream.stream=NULL; //Will get a value after openDefaultAudioStream call
outStream.sampleRate=44100;//The stream sample rate
outStream.sampleFormat=paFloat32;//The stream sample format (float 32-bit in this case)
outStream.inChannels=0;//Zero input channels indicates that we need an output only stream
outStream.outChannels=2;//Two-channels for stereo output
outStream.framesPerBuffer=512;//Number of frames of the buffers in the processing callback function
//=============================================================================
//STEP 1 - Initialise audio system.
//=============================================================================
initialiseAudioSystem();
//=============================================================================
//STEP 2 - Open an audio stream
//=============================================================================
openDefaultAudioStream(&outStream,processingCallback,&data);
//Also register a callback function to be called as soon as
//the stream stops. Handy to have here although it does not
//do much in this example.
setAudioStreamFinishedCallback(&outStream,&StreamFinished);
//=============================================================================
//STEP 3 - Main control loop
//=============================================================================
//Start the audio stream
startAudioStream(&outStream);
//Pause for NUM_SECONDS seconds
printf("Pause for %i seconds\n",NUM_SECONDS);
pause(NUM_SECONDS*1000);
//Stop the audio stream
stopAudioStream(&outStream);
//=============================================================================
//PART4 - Clean up
//=============================================================================
//Close the audio stream
closeAudioStream(&outStream);
//Terminate the audio system.
terminateAudioSystem();
printf("Example completed.\n");
return 0;
}
/* Starts the connection to the streaming machine */
int LiStartConnection(const char* host, PSTREAM_CONFIGURATION streamConfig, PCONNECTION_LISTENER_CALLBACKS clCallbacks,
PDECODER_RENDERER_CALLBACKS drCallbacks, PAUDIO_RENDERER_CALLBACKS arCallbacks,
void* renderContext, int drFlags, int _serverMajorVersion) {
int err;
ServerMajorVersion = _serverMajorVersion;
memcpy(&StreamConfig, streamConfig, sizeof(StreamConfig));
// Replace missing callbacks with placeholders
fixupMissingCallbacks(&drCallbacks, &arCallbacks, &clCallbacks);
memcpy(&VideoCallbacks, drCallbacks, sizeof(VideoCallbacks));
memcpy(&AudioCallbacks, arCallbacks, sizeof(AudioCallbacks));
// Hook the termination callback so we can avoid issuing a termination callback
// after LiStopConnection() is called
originalTerminationCallback = clCallbacks->connectionTerminated;
memcpy(&ListenerCallbacks, clCallbacks, sizeof(ListenerCallbacks));
ListenerCallbacks.connectionTerminated = ClInternalConnectionTerminated;
alreadyTerminated = 0;
Limelog("Initializing platform...");
ListenerCallbacks.stageStarting(STAGE_PLATFORM_INIT);
err = initializePlatform();
if (err != 0) {
Limelog("failed: %d\n", err);
ListenerCallbacks.stageFailed(STAGE_PLATFORM_INIT, err);
goto Cleanup;
}
stage++;
LC_ASSERT(stage == STAGE_PLATFORM_INIT);
ListenerCallbacks.stageComplete(STAGE_PLATFORM_INIT);
Limelog("done\n");
Limelog("Resolving host name...");
ListenerCallbacks.stageStarting(STAGE_NAME_RESOLUTION);
err = resolveHostName(host);
if (err != 0) {
Limelog("failed: %d\n", err);
ListenerCallbacks.stageFailed(STAGE_NAME_RESOLUTION, err);
goto Cleanup;
}
stage++;
LC_ASSERT(stage == STAGE_NAME_RESOLUTION);
ListenerCallbacks.stageComplete(STAGE_NAME_RESOLUTION);
Limelog("done\n");
Limelog("Starting RTSP handshake...");
ListenerCallbacks.stageStarting(STAGE_RTSP_HANDSHAKE);
err = performRtspHandshake();
if (err != 0) {
Limelog("failed: %d\n", err);
ListenerCallbacks.stageFailed(STAGE_RTSP_HANDSHAKE, err);
goto Cleanup;
}
stage++;
LC_ASSERT(stage == STAGE_RTSP_HANDSHAKE);
ListenerCallbacks.stageComplete(STAGE_RTSP_HANDSHAKE);
Limelog("done\n");
Limelog("Initializing control stream...");
ListenerCallbacks.stageStarting(STAGE_CONTROL_STREAM_INIT);
err = initializeControlStream();
if (err != 0) {
Limelog("failed: %d\n", err);
ListenerCallbacks.stageFailed(STAGE_CONTROL_STREAM_INIT, err);
goto Cleanup;
}
stage++;
LC_ASSERT(stage == STAGE_CONTROL_STREAM_INIT);
ListenerCallbacks.stageComplete(STAGE_CONTROL_STREAM_INIT);
Limelog("done\n");
Limelog("Initializing video stream...");
ListenerCallbacks.stageStarting(STAGE_VIDEO_STREAM_INIT);
initializeVideoStream();
stage++;
LC_ASSERT(stage == STAGE_VIDEO_STREAM_INIT);
ListenerCallbacks.stageComplete(STAGE_VIDEO_STREAM_INIT);
Limelog("done\n");
Limelog("Initializing audio stream...");
ListenerCallbacks.stageStarting(STAGE_AUDIO_STREAM_INIT);
initializeAudioStream();
stage++;
LC_ASSERT(stage == STAGE_AUDIO_STREAM_INIT);
ListenerCallbacks.stageComplete(STAGE_AUDIO_STREAM_INIT);
Limelog("done\n");
Limelog("Initializing input stream...");
ListenerCallbacks.stageStarting(STAGE_INPUT_STREAM_INIT);
initializeInputStream(streamConfig->remoteInputAesKey, sizeof(streamConfig->remoteInputAesKey),
streamConfig->remoteInputAesIv, sizeof(streamConfig->remoteInputAesIv));
stage++;
LC_ASSERT(stage == STAGE_INPUT_STREAM_INIT);
ListenerCallbacks.stageComplete(STAGE_INPUT_STREAM_INIT);
Limelog("done\n");
Limelog("Starting control stream...");
ListenerCallbacks.stageStarting(STAGE_CONTROL_STREAM_START);
err = startControlStream();
if (err != 0) {
Limelog("failed: %d\n", err);
ListenerCallbacks.stageFailed(STAGE_CONTROL_STREAM_START, err);
goto Cleanup;
}
stage++;
LC_ASSERT(stage == STAGE_CONTROL_STREAM_START);
ListenerCallbacks.stageComplete(STAGE_CONTROL_STREAM_START);
Limelog("done\n");
Limelog("Starting video stream...");
ListenerCallbacks.stageStarting(STAGE_VIDEO_STREAM_START);
err = startVideoStream(renderContext, drFlags);
if (err != 0) {
Limelog("Video stream start failed: %d\n", err);
ListenerCallbacks.stageFailed(STAGE_VIDEO_STREAM_START, err);
goto Cleanup;
}
stage++;
LC_ASSERT(stage == STAGE_VIDEO_STREAM_START);
ListenerCallbacks.stageComplete(STAGE_VIDEO_STREAM_START);
Limelog("done\n");
Limelog("Starting audio stream...");
ListenerCallbacks.stageStarting(STAGE_AUDIO_STREAM_START);
err = startAudioStream();
if (err != 0) {
Limelog("Audio stream start failed: %d\n", err);
ListenerCallbacks.stageFailed(STAGE_AUDIO_STREAM_START, err);
goto Cleanup;
}
stage++;
LC_ASSERT(stage == STAGE_AUDIO_STREAM_START);
ListenerCallbacks.stageComplete(STAGE_AUDIO_STREAM_START);
Limelog("done\n");
Limelog("Starting input stream...");
ListenerCallbacks.stageStarting(STAGE_INPUT_STREAM_START);
err = startInputStream();
if (err != 0) {
Limelog("Input stream start failed: %d\n", err);
ListenerCallbacks.stageFailed(STAGE_INPUT_STREAM_START, err);
goto Cleanup;
}
stage++;
LC_ASSERT(stage == STAGE_INPUT_STREAM_START);
ListenerCallbacks.stageComplete(STAGE_INPUT_STREAM_START);
Limelog("done\n");
ListenerCallbacks.connectionStarted();
Cleanup:
return err;
}
