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-rw-r--r--portaudio/test/patest_ringmix.c86
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diff --git a/portaudio/test/patest_ringmix.c b/portaudio/test/patest_ringmix.c
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-/** @file patest_ringmix.c
- @ingroup test_src
- @brief Ring modulate inputs to left output, mix inputs to right output.
-*/
-/*
- * $Id$
- *
- * This program uses the PortAudio Portable Audio Library.
- * For more information see: http://www.portaudio.com
- * Copyright (c) 1999-2000 Ross Bencina and Phil Burk
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files
- * (the "Software"), to deal in the Software without restriction,
- * including without limitation the rights to use, copy, modify, merge,
- * publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so,
- * subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be
- * included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
- * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
- * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-/*
- * The text above constitutes the entire PortAudio license; however,
- * the PortAudio community also makes the following non-binding requests:
- *
- * Any person wishing to distribute modifications to the Software is
- * requested to send the modifications to the original developer so that
- * they can be incorporated into the canonical version. It is also
- * requested that these non-binding requests be included along with the
- * license above.
- */
-
-
-#include "stdio.h"
-#include "portaudio.h"
-/* This will be called asynchronously by the PortAudio engine. */
-static int myCallback( const void *inputBuffer, void *outputBuffer,
- unsigned long framesPerBuffer,
- const PaStreamCallbackTimeInfo* timeInfo,
- PaStreamCallbackFlags statusFlags,
- void *userData )
-{
- const float *in = (const float *) inputBuffer;
- float *out = (float *) outputBuffer;
- float leftInput, rightInput;
- unsigned int i;
-
- /* Read input buffer, process data, and fill output buffer. */
- for( i=0; i<framesPerBuffer; i++ )
- {
- leftInput = *in++; /* Get interleaved samples from input buffer. */
- rightInput = *in++;
- *out++ = leftInput * rightInput; /* ring modulation */
- *out++ = 0.5f * (leftInput + rightInput); /* mix */
- }
- return 0;
-}
-
-/* Open a PortAudioStream to input and output audio data. */
-int main(void)
-{
- PaStream *stream;
- Pa_Initialize();
- Pa_OpenDefaultStream(
- &stream,
- 2, 2, /* stereo input and output */
- paFloat32, 44100.0,
- 64, /* 64 frames per buffer */
- myCallback, NULL );
- Pa_StartStream( stream );
- Pa_Sleep( 10000 ); /* Sleep for 10 seconds while processing. */
- Pa_StopStream( stream );
- Pa_CloseStream( stream );
- Pa_Terminate();
- return 0;
-}