diff src/portaudio_20140130/bindings/cpp/source/portaudiocpp/Stream.cxx @ 39:7ddb4fc30dac

Current stable PortAudio source

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/portaudio_20140130/bindings/cpp/source/portaudiocpp/Stream.cxx	Tue Oct 18 13:11:05 2016 +0100
@@ -0,0 +1,195 @@
+#include "portaudiocpp/Stream.hxx"
+
+#include <cstddef>
+
+#include "portaudiocpp/Exception.hxx"
+#include "portaudiocpp/System.hxx"
+
+namespace portaudio
+{
+
+	// -----------------------------------------------------------------------------------
+
+	Stream::Stream() : stream_(NULL)
+	{
+	}
+
+	Stream::~Stream()
+	{
+		// (can't call close here, 
+		// the derived class should atleast call 
+		// close() in it's deconstructor)
+	}
+
+	// -----------------------------------------------------------------------------------
+
+	//////
+	/// Closes the Stream if it's open, else does nothing.
+	//////
+	void Stream::close()
+	{
+		if (isOpen() && System::exists())
+		{
+			PaError err = Pa_CloseStream(stream_);
+			stream_ = NULL;
+
+			if (err != paNoError)
+				throw PaException(err);
+		}
+	}
+
+	//////
+	/// Returns true if the Stream is open.
+	//////
+	bool Stream::isOpen() const
+	{
+		return (stream_ != NULL);
+	}
+
+	// -----------------------------------------------------------------------------------
+
+	void Stream::setStreamFinishedCallback(PaStreamFinishedCallback *callback)
+	{
+		PaError err = Pa_SetStreamFinishedCallback(stream_, callback);
+
+		if (err != paNoError)
+			throw PaException(err);
+	}
+
+	// -----------------------------------------------------------------------------------
+
+	void Stream::start()
+	{
+		PaError err = Pa_StartStream(stream_);
+
+		if (err != paNoError)
+			throw PaException(err);
+	}
+
+	void Stream::stop()
+	{
+		PaError err = Pa_StopStream(stream_);
+
+		if (err != paNoError)
+			throw PaException(err);
+	}
+
+	void Stream::abort()
+	{
+		PaError err = Pa_AbortStream(stream_);
+
+		if (err != paNoError)
+			throw PaException(err);
+	}
+
+	bool Stream::isStopped() const
+	{
+		PaError ret = Pa_IsStreamStopped(stream_);
+
+		if (ret < 0)
+			throw PaException(ret);
+
+		return (ret == 1);
+	}
+
+	bool Stream::isActive() const
+	{
+		PaError ret = Pa_IsStreamActive(stream_);
+
+		if (ret < 0)
+			throw PaException(ret);
+
+		return (ret == 1);
+	}
+
+	// -----------------------------------------------------------------------------------
+
+	//////
+	/// Returns the best known input latency for the Stream. This value may differ from the 
+	/// suggested input latency set in the StreamParameters. Includes all sources of 
+	/// latency known to PortAudio such as internal buffering, and Host API reported latency. 
+	/// Doesn't include any estimates of unknown latency.
+	//////
+	PaTime Stream::inputLatency() const
+	{
+		const PaStreamInfo *info = Pa_GetStreamInfo(stream_);
+		if (info == NULL)
+		{
+			throw PaException(paInternalError);
+			return PaTime(0.0);
+		}
+
+		return info->inputLatency;
+	}
+
+	//////
+	/// Returns the best known output latency for the Stream. This value may differ from the 
+	/// suggested output latency set in the StreamParameters. Includes all sources of 
+	/// latency known to PortAudio such as internal buffering, and Host API reported latency. 
+	/// Doesn't include any estimates of unknown latency.
+	//////
+	PaTime Stream::outputLatency() const
+	{
+		const PaStreamInfo *info = Pa_GetStreamInfo(stream_);
+		if (info == NULL)
+		{
+			throw PaException(paInternalError);
+			return PaTime(0.0);
+		}
+
+		return info->outputLatency;
+	}
+
+	//////
+	/// Returns the sample rate of the Stream. Usually this will be the 
+	/// best known estimate of the used sample rate. For instance when opening a 
+	/// Stream setting 44100.0 Hz in the StreamParameters, the actual sample 
+	/// rate might be something like 44103.2 Hz (due to imperfections in the 
+	/// sound card hardware).
+	//////
+	double Stream::sampleRate() const
+	{
+		const PaStreamInfo *info = Pa_GetStreamInfo(stream_);
+		if (info == NULL)
+		{
+			throw PaException(paInternalError);
+			return 0.0;
+		}
+
+		return info->sampleRate;
+	}
+
+	// -----------------------------------------------------------------------------------
+
+	PaTime Stream::time() const
+	{
+		return Pa_GetStreamTime(stream_);
+	}
+
+	// -----------------------------------------------------------------------------------
+
+	//////
+	/// Accessor (const) for PortAudio PaStream pointer, useful for interfacing with 
+	/// PortAudio add-ons such as PortMixer for instance. Normally accessing this 
+	/// pointer should not be needed as PortAudioCpp aims to provide all of PortAudio's 
+	/// functionality.
+	//////
+	const PaStream *Stream::paStream() const
+	{
+		return stream_;
+	}
+
+	//////
+	/// Accessor (non-const) for PortAudio PaStream pointer, useful for interfacing with 
+	/// PortAudio add-ons such as PortMixer for instance. Normally accessing this 
+	/// pointer should not be needed as PortAudioCpp aims to provide all of PortAudio's 
+	/// functionality.
+	//////
+	PaStream *Stream::paStream()
+	{
+		return stream_;
+	}
+
+	// -----------------------------------------------------------------------------------
+
+} // namespace portaudio