diff options
author | sanine <sanine.not@pm.me> | 2022-08-25 14:54:53 -0500 |
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committer | sanine <sanine.not@pm.me> | 2022-08-25 14:54:53 -0500 |
commit | 37c97e345d12f95dde44e1d1a4c2f2aadd4615bc (patch) | |
tree | e1bb25bc855883062bdd7847ff2c04290f71c840 /portaudio/bindings/cpp/source/portaudiocpp/StreamParameters.cxx | |
parent | 5634c7b04da619669f2f29f6798c03982be05180 (diff) |
add initial structure
Diffstat (limited to 'portaudio/bindings/cpp/source/portaudiocpp/StreamParameters.cxx')
-rw-r--r-- | portaudio/bindings/cpp/source/portaudiocpp/StreamParameters.cxx | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/portaudio/bindings/cpp/source/portaudiocpp/StreamParameters.cxx b/portaudio/bindings/cpp/source/portaudiocpp/StreamParameters.cxx new file mode 100644 index 0000000..5857710 --- /dev/null +++ b/portaudio/bindings/cpp/source/portaudiocpp/StreamParameters.cxx @@ -0,0 +1,165 @@ +#include "portaudiocpp/StreamParameters.hxx" + +#include <cstddef> + +#include "portaudiocpp/Device.hxx" + +namespace portaudio +{ + // ----------------------------------------------------------------------------------- + + ////// + /// Default constructor; does nothing. + ////// + StreamParameters::StreamParameters() + { + } + + ////// + /// Sets up the all parameters needed to open either a half-duplex or full-duplex Stream. + /// + /// @param inputParameters The parameters for the input direction of the to-be opened + /// Stream or DirectionSpecificStreamParameters::null() for an output-only Stream. + /// @param outputParameters The parameters for the output direction of the to-be opened + /// Stream or DirectionSpecificStreamParameters::null() for an input-only Stream. + /// @param sampleRate The to-be opened Stream's sample rate in Hz. + /// @param framesPerBuffer The number of frames per buffer for a CallbackStream, or + /// the preferred buffer granularity for a BlockingStream. + /// @param flags The flags for the to-be opened Stream; default paNoFlag. + ////// + StreamParameters::StreamParameters(const DirectionSpecificStreamParameters &inputParameters, + const DirectionSpecificStreamParameters &outputParameters, double sampleRate, unsigned long framesPerBuffer, + PaStreamFlags flags) : inputParameters_(inputParameters), outputParameters_(outputParameters), + sampleRate_(sampleRate), framesPerBuffer_(framesPerBuffer), flags_(flags) + { + } + + // ----------------------------------------------------------------------------------- + + ////// + /// Sets the requested sample rate. If this sample rate isn't supported by the hardware, the + /// Stream will fail to open. The real-life sample rate used might differ slightly due to + /// imperfections in the sound card hardware; use Stream::sampleRate() to retrieve the + /// best known estimate for this value. + ////// + void StreamParameters::setSampleRate(double sampleRate) + { + sampleRate_ = sampleRate; + } + + ////// + /// Either the number of frames per buffer for a CallbackStream, or + /// the preferred buffer granularity for a BlockingStream. See PortAudio + /// documentation. + ////// + void StreamParameters::setFramesPerBuffer(unsigned long framesPerBuffer) + { + framesPerBuffer_ = framesPerBuffer; + } + + ////// + /// Sets the specified flag or does nothing when the flag is already set. Doesn't + /// `unset' any previously existing flags (use clearFlags() for that). + ////// + void StreamParameters::setFlag(PaStreamFlags flag) + { + flags_ |= flag; + } + + ////// + /// Unsets the specified flag or does nothing if the flag isn't set. Doesn't affect + /// any other flags. + ////// + void StreamParameters::unsetFlag(PaStreamFlags flag) + { + flags_ &= ~flag; + } + + ////// + /// Clears or `unsets' all set flags. + ////// + void StreamParameters::clearFlags() + { + flags_ = paNoFlag; + } + + // ----------------------------------------------------------------------------------- + + void StreamParameters::setInputParameters(const DirectionSpecificStreamParameters ¶meters) + { + inputParameters_ = parameters; + } + + void StreamParameters::setOutputParameters(const DirectionSpecificStreamParameters ¶meters) + { + outputParameters_ = parameters; + } + + // ----------------------------------------------------------------------------------- + + bool StreamParameters::isSupported() const + { + return (Pa_IsFormatSupported(inputParameters_.paStreamParameters(), + outputParameters_.paStreamParameters(), sampleRate_) == paFormatIsSupported); + } + + // ----------------------------------------------------------------------------------- + + double StreamParameters::sampleRate() const + { + return sampleRate_; + } + + unsigned long StreamParameters::framesPerBuffer() const + { + return framesPerBuffer_; + } + + ////// + /// Returns all currently set flags as a binary combined + /// integer value (PaStreamFlags). Use isFlagSet() to + /// avoid dealing with the bitmasks. + ////// + PaStreamFlags StreamParameters::flags() const + { + return flags_; + } + + ////// + /// Returns true if the specified flag is currently set + /// or false if it isn't. + ////// + bool StreamParameters::isFlagSet(PaStreamFlags flag) const + { + return ((flags_ & flag) != 0); + } + + // ----------------------------------------------------------------------------------- + + DirectionSpecificStreamParameters &StreamParameters::inputParameters() + { + return inputParameters_; + } + + const DirectionSpecificStreamParameters &StreamParameters::inputParameters() const + { + return inputParameters_; + } + + DirectionSpecificStreamParameters &StreamParameters::outputParameters() + { + return outputParameters_; + } + + const DirectionSpecificStreamParameters &StreamParameters::outputParameters() const + { + return outputParameters_; + } + + // ----------------------------------------------------------------------------------- +} // namespace portaudio + + + + + |