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Diffstat (limited to '3rdparty/portaudio/bindings/cpp/example/sine.cxx')
-rw-r--r--3rdparty/portaudio/bindings/cpp/example/sine.cxx206
1 files changed, 102 insertions, 104 deletions
diff --git a/3rdparty/portaudio/bindings/cpp/example/sine.cxx b/3rdparty/portaudio/bindings/cpp/example/sine.cxx
index 0676e3e76ca..acd01e613b1 100644
--- a/3rdparty/portaudio/bindings/cpp/example/sine.cxx
+++ b/3rdparty/portaudio/bindings/cpp/example/sine.cxx
@@ -20,50 +20,50 @@ const int TABLE_SIZE = 200;
class SineGenerator
{
public:
- SineGenerator(int tableSize) : tableSize_(tableSize), leftPhase_(0), rightPhase_(0)
- {
- const double PI = 3.14159265;
- table_ = new float[tableSize];
- for (int i = 0; i < tableSize; ++i)
- {
- table_[i] = 0.125f * (float)sin(((double)i/(double)tableSize)*PI*2.);
- }
- }
-
- ~SineGenerator()
- {
- delete[] table_;
- }
-
- int generate(const void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer,
- const PaStreamCallbackTimeInfo *timeInfo, PaStreamCallbackFlags statusFlags)
- {
- assert(outputBuffer != NULL);
-
- float **out = static_cast<float **>(outputBuffer);
-
- for (unsigned int i = 0; i < framesPerBuffer; ++i)
- {
- out[0][i] = table_[leftPhase_];
- out[1][i] = table_[rightPhase_];
-
- leftPhase_ += 1;
- if (leftPhase_ >= tableSize_)
- leftPhase_ -= tableSize_;
-
- rightPhase_ += 3;
- if (rightPhase_ >= tableSize_)
- rightPhase_ -= tableSize_;
- }
-
- return paContinue;
- }
+ SineGenerator(int tableSize) : tableSize_(tableSize), leftPhase_(0), rightPhase_(0)
+ {
+ const double PI = 3.14159265;
+ table_ = new float[tableSize];
+ for (int i = 0; i < tableSize; ++i)
+ {
+ table_[i] = 0.125f * (float)sin(((double)i/(double)tableSize)*PI*2.);
+ }
+ }
+
+ ~SineGenerator()
+ {
+ delete[] table_;
+ }
+
+ int generate(const void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer,
+ const PaStreamCallbackTimeInfo *timeInfo, PaStreamCallbackFlags statusFlags)
+ {
+ assert(outputBuffer != NULL);
+
+ float **out = static_cast<float **>(outputBuffer);
+
+ for (unsigned int i = 0; i < framesPerBuffer; ++i)
+ {
+ out[0][i] = table_[leftPhase_];
+ out[1][i] = table_[rightPhase_];
+
+ leftPhase_ += 1;
+ if (leftPhase_ >= tableSize_)
+ leftPhase_ -= tableSize_;
+
+ rightPhase_ += 3;
+ if (rightPhase_ >= tableSize_)
+ rightPhase_ -= tableSize_;
+ }
+
+ return paContinue;
+ }
private:
- float *table_;
- int tableSize_;
- int leftPhase_;
- int rightPhase_;
+ float *table_;
+ int tableSize_;
+ int leftPhase_;
+ int rightPhase_;
};
// ---------------------------------------------------------------------------------------
@@ -72,66 +72,64 @@ private:
int main(int, char *[]);
int main(int, char *[])
{
- try
- {
- // Create a SineGenerator object:
- SineGenerator sineGenerator(TABLE_SIZE);
-
- std::cout << "Setting up PortAudio..." << std::endl;
-
- // Set up the System:
- portaudio::AutoSystem autoSys;
- portaudio::System &sys = portaudio::System::instance();
-
- // Set up the parameters required to open a (Callback)Stream:
- portaudio::DirectionSpecificStreamParameters outParams(sys.defaultOutputDevice(), 2, portaudio::FLOAT32, false, sys.defaultOutputDevice().defaultLowOutputLatency(), NULL);
- portaudio::StreamParameters params(portaudio::DirectionSpecificStreamParameters::null(), outParams, SAMPLE_RATE, FRAMES_PER_BUFFER, paClipOff);
-
- std::cout << "Opening stereo output stream..." << std::endl;
-
- // Create (and open) a new Stream, using the SineGenerator::generate function as a callback:
- portaudio::MemFunCallbackStream<SineGenerator> stream(params, sineGenerator, &SineGenerator::generate);
-
- std::cout << "Starting playback for " << NUM_SECONDS << " seconds." << std::endl;
-
- // Start the Stream (audio playback starts):
- stream.start();
-
- // Wait for 5 seconds:
- sys.sleep(NUM_SECONDS * 1000);
-
- std::cout << "Closing stream..." <<std::endl;
-
- // Stop the Stream (not strictly needed as termintating the System will also stop all open Streams):
- stream.stop();
-
- // Close the Stream (not strictly needed as terminating the System will also close all open Streams):
- stream.close();
-
- // Terminate the System (not strictly needed as the AutoSystem will also take care of this when it
- // goes out of scope):
- sys.terminate();
-
- std::cout << "Test finished." << std::endl;
- }
- catch (const portaudio::PaException &e)
- {
- std::cout << "A PortAudio error occured: " << e.paErrorText() << std::endl;
- }
- catch (const portaudio::PaCppException &e)
- {
- std::cout << "A PortAudioCpp error occured: " << e.what() << std::endl;
- }
- catch (const std::exception &e)
- {
- std::cout << "A generic exception occured: " << e.what() << std::endl;
- }
- catch (...)
- {
- std::cout << "An unknown exception occured." << std::endl;
- }
-
- return 0;
+ try
+ {
+ // Create a SineGenerator object:
+ SineGenerator sineGenerator(TABLE_SIZE);
+
+ std::cout << "Setting up PortAudio..." << std::endl;
+
+ // Set up the System:
+ portaudio::AutoSystem autoSys;
+ portaudio::System &sys = portaudio::System::instance();
+
+ // Set up the parameters required to open a (Callback)Stream:
+ portaudio::DirectionSpecificStreamParameters outParams(sys.defaultOutputDevice(), 2, portaudio::FLOAT32, false, sys.defaultOutputDevice().defaultLowOutputLatency(), NULL);
+ portaudio::StreamParameters params(portaudio::DirectionSpecificStreamParameters::null(), outParams, SAMPLE_RATE, FRAMES_PER_BUFFER, paClipOff);
+
+ std::cout << "Opening stereo output stream..." << std::endl;
+
+ // Create (and open) a new Stream, using the SineGenerator::generate function as a callback:
+ portaudio::MemFunCallbackStream<SineGenerator> stream(params, sineGenerator, &SineGenerator::generate);
+
+ std::cout << "Starting playback for " << NUM_SECONDS << " seconds." << std::endl;
+
+ // Start the Stream (audio playback starts):
+ stream.start();
+
+ // Wait for 5 seconds:
+ sys.sleep(NUM_SECONDS * 1000);
+
+ std::cout << "Closing stream..." <<std::endl;
+
+ // Stop the Stream (not strictly needed as termintating the System will also stop all open Streams):
+ stream.stop();
+
+ // Close the Stream (not strictly needed as terminating the System will also close all open Streams):
+ stream.close();
+
+ // Terminate the System (not strictly needed as the AutoSystem will also take care of this when it
+ // goes out of scope):
+ sys.terminate();
+
+ std::cout << "Test finished." << std::endl;
+ }
+ catch (const portaudio::PaException &e)
+ {
+ std::cout << "A PortAudio error occurred: " << e.paErrorText() << std::endl;
+ }
+ catch (const portaudio::PaCppException &e)
+ {
+ std::cout << "A PortAudioCpp error occurred: " << e.what() << std::endl;
+ }
+ catch (const std::exception &e)
+ {
+ std::cout << "A generic exception occurred: " << e.what() << std::endl;
+ }
+ catch (...)
+ {
+ std::cout << "An unknown exception occurred." << std::endl;
+ }
+
+ return 0;
}
-
-