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authorsanine <sanine.not@pm.me>2022-08-25 14:54:53 -0500
committersanine <sanine.not@pm.me>2022-08-25 14:54:53 -0500
commit37c97e345d12f95dde44e1d1a4c2f2aadd4615bc (patch)
treee1bb25bc855883062bdd7847ff2c04290f71c840 /portaudio/test/patest_multi_sine.c
parent5634c7b04da619669f2f29f6798c03982be05180 (diff)
add initial structure
Diffstat (limited to 'portaudio/test/patest_multi_sine.c')
-rw-r--r--portaudio/test/patest_multi_sine.c205
1 files changed, 205 insertions, 0 deletions
diff --git a/portaudio/test/patest_multi_sine.c b/portaudio/test/patest_multi_sine.c
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+/** @file patest_multi_sine.c
+ @ingroup test_src
+ @brief Play a different sine wave on each channel.
+ @author Phil Burk http://www.softsynth.com
+*/
+/*
+ * $Id$
+ *
+ * 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 <math.h>
+
+#include "portaudio.h"
+
+#define SAMPLE_RATE (44100)
+#define FRAMES_PER_BUFFER (128)
+#define FREQ_INCR (300.0 / SAMPLE_RATE)
+#define MAX_CHANNELS (64)
+
+#ifndef M_PI
+#define M_PI (3.14159265)
+#endif
+
+typedef struct
+{
+ short interleaved; /* Nonzero for interleaved / zero for non-interleaved. */
+ int numChannels; /* Actually used. */
+ double phases[MAX_CHANNELS]; /* Each channel gets its' own frequency. */
+}
+paTestData;
+
+/* This routine will be called by the PortAudio engine when audio is needed.
+** It may called at interrupt level on some machines so don't do anything
+** that could mess up the system like calling malloc() or free().
+*/
+static int patestCallback(const void* inputBuffer,
+ void* outputBuffer,
+ unsigned long framesPerBuffer,
+ const PaStreamCallbackTimeInfo* timeInfo,
+ PaStreamCallbackFlags statusFlags,
+ void* userData)
+{
+ int frameIndex, channelIndex;
+ float** outputs = (float**)outputBuffer;
+ paTestData* data = (paTestData*)userData;
+
+ (void) inputBuffer; /* Prevent unused arg warning. */
+ if (data->interleaved)
+ {
+ float *out = (float*)outputBuffer; /* interleaved version */
+ for( frameIndex=0; frameIndex<(int)framesPerBuffer; frameIndex++ )
+ {
+ for( channelIndex=0; channelIndex<data->numChannels; channelIndex++ )
+ {
+ /* Output sine wave on every channel. */
+ *out++ = (float) sin(data->phases[channelIndex]);
+
+ /* Play each channel at a higher frequency. */
+ data->phases[channelIndex] += FREQ_INCR * (4 + channelIndex);
+ if( data->phases[channelIndex] >= (2.0 * M_PI) ) data->phases[channelIndex] -= (2.0 * M_PI);
+ }
+ }
+ }
+ else
+ {
+ for( frameIndex=0; frameIndex<(int)framesPerBuffer; frameIndex++ )
+ {
+ for( channelIndex=0; channelIndex<data->numChannels; channelIndex++ )
+ {
+ /* Output sine wave on every channel. */
+ outputs[channelIndex][frameIndex] = (float) sin(data->phases[channelIndex]);
+
+ /* Play each channel at a higher frequency. */
+ data->phases[channelIndex] += FREQ_INCR * (4 + channelIndex);
+ if( data->phases[channelIndex] >= (2.0 * M_PI) ) data->phases[channelIndex] -= (2.0 * M_PI);
+ }
+ }
+ }
+ return 0;
+}
+
+/*******************************************************************/
+int test(short interleaved)
+{
+ PaStream* stream;
+ PaStreamParameters outputParameters;
+ PaError err;
+ const PaDeviceInfo* pdi;
+ paTestData data;
+ short n;
+
+ outputParameters.device = Pa_GetDefaultOutputDevice(); /* Default output device, max channels. */
+ if (outputParameters.device == paNoDevice) {
+ fprintf(stderr,"Error: No default output device.\n");
+ return paInvalidDevice;
+ }
+ pdi = Pa_GetDeviceInfo(outputParameters.device);
+ outputParameters.channelCount = pdi->maxOutputChannels;
+ if (outputParameters.channelCount > MAX_CHANNELS)
+ outputParameters.channelCount = MAX_CHANNELS;
+ outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */
+ outputParameters.suggestedLatency = pdi->defaultLowOutputLatency;
+ outputParameters.hostApiSpecificStreamInfo = NULL;
+
+ data.interleaved = interleaved;
+ data.numChannels = outputParameters.channelCount;
+ for (n = 0; n < data.numChannels; n++)
+ data.phases[n] = 0.0; /* Phases wrap and maybe don't need initialisation. */
+ printf("%d ", data.numChannels);
+ if (interleaved)
+ printf("interleaved ");
+ else
+ {
+ printf(" non-interleaved ");
+ outputParameters.sampleFormat |= paNonInterleaved;
+ }
+ printf("channels.\n");
+
+ err = Pa_OpenStream(&stream,
+ NULL, /* No input. */
+ &outputParameters,
+ SAMPLE_RATE, /* Sample rate. */
+ FRAMES_PER_BUFFER, /* Frames per buffer. */
+ paClipOff, /* Samples never out of range, no clipping. */
+ patestCallback,
+ &data);
+ if (err == paNoError)
+ {
+ err = Pa_StartStream(stream);
+ if (err == paNoError)
+ {
+ printf("Hit ENTER to stop this test.\n");
+ getchar();
+ err = Pa_StopStream(stream);
+ }
+ Pa_CloseStream( stream );
+ }
+ return err;
+}
+
+
+/*******************************************************************/
+int main(void)
+{
+ PaError err;
+
+ printf("PortAudio Test: output sine wave on each channel.\n" );
+
+ err = Pa_Initialize();
+ if (err != paNoError)
+ goto done;
+
+ err = test(1); /* 1 means interleaved. */
+ if (err != paNoError)
+ goto done;
+
+ err = test(0); /* 0 means not interleaved. */
+ if (err != paNoError)
+ goto done;
+
+ printf("Test finished.\n");
+done:
+ if (err)
+ {
+ fprintf(stderr, "An error occurred while using the portaudio stream\n");
+ fprintf(stderr, "Error number: %d\n", err );
+ fprintf(stderr, "Error message: %s\n", Pa_GetErrorText(err));
+ }
+ Pa_Terminate();
+ return 0;
+}