diff options
Diffstat (limited to '3rdparty/portaudio/bindings/cpp/source/portaudiocpp/Stream.cxx')
-rw-r--r-- | 3rdparty/portaudio/bindings/cpp/source/portaudiocpp/Stream.cxx | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/3rdparty/portaudio/bindings/cpp/source/portaudiocpp/Stream.cxx b/3rdparty/portaudio/bindings/cpp/source/portaudiocpp/Stream.cxx new file mode 100644 index 00000000000..ba16e0335f9 --- /dev/null +++ b/3rdparty/portaudio/bindings/cpp/source/portaudiocpp/Stream.cxx @@ -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 |