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Update portaudio to upstream r1885

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This commit is contained in:
lllucius
2013-02-27 01:33:15 +00:00
parent a8c69337c2
commit 123ec235c9
233 changed files with 36854 additions and 12370 deletions
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27
lib-src/portaudio-v19/examples/CMakeLists.txt Normal file
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# Example projects
MACRO(ADD_EXAMPLE appl_name)
ADD_EXECUTABLE(${appl_name} "${appl_name}.c")
TARGET_LINK_LIBRARIES(${appl_name} portaudio_static)
ENDMACRO(ADD_EXAMPLE)
MACRO(ADD_EXAMPLE_CPP appl_name)
ADD_EXECUTABLE(${appl_name} "${appl_name}.cpp")
TARGET_LINK_LIBRARIES(${appl_name} portaudio_static)
ENDMACRO(ADD_EXAMPLE_CPP)
ADD_EXAMPLE(pa_devs)
ADD_EXAMPLE(pa_fuzz)
ADD_EXAMPLE(paex_mono_asio_channel_select)
ADD_EXAMPLE(paex_ocean_shore)
ADD_EXAMPLE(paex_pink)
ADD_EXAMPLE(paex_read_write_wire)
ADD_EXAMPLE(paex_record)
ADD_EXAMPLE(paex_record_file)
ADD_EXAMPLE(paex_saw)
ADD_EXAMPLE(paex_sine)
ADD_EXAMPLE_CPP(paex_sine_c++)
ADD_EXAMPLE(paex_wmme_ac3)
ADD_EXAMPLE(paex_wmme_surround)
ADD_EXAMPLE(paex_write_sine)
ADD_EXAMPLE(paex_write_sine_nonint)

249
lib-src/portaudio-v19/examples/pa_devs.c Normal file
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/** @file pa_devs.c
@ingroup examples_src
@brief List available devices, including device information.
@author Phil Burk http://www.softsynth.com
@note Define PA_USE_ASIO=0 to compile this code on Windows without
ASIO support.
*/
/*
* $Id: pa_devs.c 1817 2012-02-22 12:44:10Z robiwan $
*
* 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"
#ifdef WIN32
#include <windows.h>
#if PA_USE_ASIO
#include "pa_asio.h"
#endif
#endif
/*******************************************************************/
static void PrintSupportedStandardSampleRates(
const PaStreamParameters *inputParameters,
const PaStreamParameters *outputParameters )
{
static double standardSampleRates[] = {
8000.0, 9600.0, 11025.0, 12000.0, 16000.0, 22050.0, 24000.0, 32000.0,
44100.0, 48000.0, 88200.0, 96000.0, 192000.0, -1 /* negative terminated list */
};
int i, printCount;
PaError err;
printCount = 0;
for( i=0; standardSampleRates[i] > 0; i++ )
{
err = Pa_IsFormatSupported( inputParameters, outputParameters, standardSampleRates[i] );
if( err == paFormatIsSupported )
{
if( printCount == 0 )
{
printf( "\t%8.2f", standardSampleRates[i] );
printCount = 1;
}
else if( printCount == 4 )
{
printf( ",\n\t%8.2f", standardSampleRates[i] );
printCount = 1;
}
else
{
printf( ", %8.2f", standardSampleRates[i] );
++printCount;
}
}
}
if( !printCount )
printf( "None\n" );
else
printf( "\n" );
}
/*******************************************************************/
int main(void);
int main(void)
{
int i, numDevices, defaultDisplayed;
const PaDeviceInfo *deviceInfo;
PaStreamParameters inputParameters, outputParameters;
PaError err;
Pa_Initialize();
printf( "PortAudio version number = %d\nPortAudio version text = '%s'\n",
Pa_GetVersion(), Pa_GetVersionText() );
numDevices = Pa_GetDeviceCount();
if( numDevices < 0 )
{
printf( "ERROR: Pa_GetDeviceCount returned 0x%x\n", numDevices );
err = numDevices;
goto error;
}
printf( "Number of devices = %d\n", numDevices );
for( i=0; i<numDevices; i++ )
{
deviceInfo = Pa_GetDeviceInfo( i );
printf( "--------------------------------------- device #%d\n", i );
/* Mark global and API specific default devices */
defaultDisplayed = 0;
if( i == Pa_GetDefaultInputDevice() )
{
printf( "[ Default Input" );
defaultDisplayed = 1;
}
else if( i == Pa_GetHostApiInfo( deviceInfo->hostApi )->defaultInputDevice )
{
const PaHostApiInfo *hostInfo = Pa_GetHostApiInfo( deviceInfo->hostApi );
printf( "[ Default %s Input", hostInfo->name );
defaultDisplayed = 1;
}
if( i == Pa_GetDefaultOutputDevice() )
{
printf( (defaultDisplayed ? "," : "[") );
printf( " Default Output" );
defaultDisplayed = 1;
}
else if( i == Pa_GetHostApiInfo( deviceInfo->hostApi )->defaultOutputDevice )
{
const PaHostApiInfo *hostInfo = Pa_GetHostApiInfo( deviceInfo->hostApi );
printf( (defaultDisplayed ? "," : "[") );
printf( " Default %s Output", hostInfo->name );
defaultDisplayed = 1;
}
if( defaultDisplayed )
printf( " ]\n" );
/* print device info fields */
#ifdef WIN32
{ /* Use wide char on windows, so we can show UTF-8 encoded device names */
wchar_t wideName[MAX_PATH];
MultiByteToWideChar(CP_UTF8, 0, deviceInfo->name, -1, wideName, MAX_PATH-1);
wprintf( L"Name = %s\n", wideName );
}
#else
printf( "Name = %s\n", deviceInfo->name );
#endif
printf( "Host API = %s\n", Pa_GetHostApiInfo( deviceInfo->hostApi )->name );
printf( "Max inputs = %d", deviceInfo->maxInputChannels );
printf( ", Max outputs = %d\n", deviceInfo->maxOutputChannels );
printf( "Default low input latency = %8.4f\n", deviceInfo->defaultLowInputLatency );
printf( "Default low output latency = %8.4f\n", deviceInfo->defaultLowOutputLatency );
printf( "Default high input latency = %8.4f\n", deviceInfo->defaultHighInputLatency );
printf( "Default high output latency = %8.4f\n", deviceInfo->defaultHighOutputLatency );
#ifdef WIN32
#if PA_USE_ASIO
/* ASIO specific latency information */
if( Pa_GetHostApiInfo( deviceInfo->hostApi )->type == paASIO ){
long minLatency, maxLatency, preferredLatency, granularity;
err = PaAsio_GetAvailableLatencyValues( i,
&minLatency, &maxLatency, &preferredLatency, &granularity );
printf( "ASIO minimum buffer size = %ld\n", minLatency );
printf( "ASIO maximum buffer size = %ld\n", maxLatency );
printf( "ASIO preferred buffer size = %ld\n", preferredLatency );
if( granularity == -1 )
printf( "ASIO buffer granularity = power of 2\n" );
else
printf( "ASIO buffer granularity = %ld\n", granularity );
}
#endif /* PA_USE_ASIO */
#endif /* WIN32 */
printf( "Default sample rate = %8.2f\n", deviceInfo->defaultSampleRate );
/* poll for standard sample rates */
inputParameters.device = i;
inputParameters.channelCount = deviceInfo->maxInputChannels;
inputParameters.sampleFormat = paInt16;
inputParameters.suggestedLatency = 0; /* ignored by Pa_IsFormatSupported() */
inputParameters.hostApiSpecificStreamInfo = NULL;
outputParameters.device = i;
outputParameters.channelCount = deviceInfo->maxOutputChannels;
outputParameters.sampleFormat = paInt16;
outputParameters.suggestedLatency = 0; /* ignored by Pa_IsFormatSupported() */
outputParameters.hostApiSpecificStreamInfo = NULL;
if( inputParameters.channelCount > 0 )
{
printf("Supported standard sample rates\n for half-duplex 16 bit %d channel input = \n",
inputParameters.channelCount );
PrintSupportedStandardSampleRates( &inputParameters, NULL );
}
if( outputParameters.channelCount > 0 )
{
printf("Supported standard sample rates\n for half-duplex 16 bit %d channel output = \n",
outputParameters.channelCount );
PrintSupportedStandardSampleRates( NULL, &outputParameters );
}
if( inputParameters.channelCount > 0 && outputParameters.channelCount > 0 )
{
printf("Supported standard sample rates\n for full-duplex 16 bit %d channel input, %d channel output = \n",
inputParameters.channelCount, outputParameters.channelCount );
PrintSupportedStandardSampleRates( &inputParameters, &outputParameters );
}
}
Pa_Terminate();
printf("----------------------------------------------\n");
return 0;
error:
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return err;
}

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lib-src/portaudio-v19/examples/pa_fuzz.c Normal file
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/** @file pa_fuzz.c
@ingroup examples_src
@brief Distort input like a fuzz box.
@author Phil Burk http://www.softsynth.com
*/
/*
* $Id: pa_fuzz.c 1752 2011-09-08 03:21:55Z philburk $
*
* 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"
/*
** Note that many of the older ISA sound cards on PCs do NOT support
** full duplex audio (simultaneous record and playback).
** And some only support full duplex at lower sample rates.
*/
#define SAMPLE_RATE (44100)
#define PA_SAMPLE_TYPE paFloat32
#define FRAMES_PER_BUFFER (64)
typedef float SAMPLE;
float CubicAmplifier( float input );
static int fuzzCallback( const void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void *userData );
/* Non-linear amplifier with soft distortion curve. */
float CubicAmplifier( float input )
{
float output, temp;
if( input < 0.0 )
{
temp = input + 1.0f;
output = (temp * temp * temp) - 1.0f;
}
else
{
temp = input - 1.0f;
output = (temp * temp * temp) + 1.0f;
}
return output;
}
#define FUZZ(x) CubicAmplifier(CubicAmplifier(CubicAmplifier(CubicAmplifier(x))))
static int gNumNoInputs = 0;
/* This routine will be called by the PortAudio engine when audio is needed.
** It may be 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 fuzzCallback( const void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void *userData )
{
SAMPLE *out = (SAMPLE*)outputBuffer;
const SAMPLE *in = (const SAMPLE*)inputBuffer;
unsigned int i;
(void) timeInfo; /* Prevent unused variable warnings. */
(void) statusFlags;
(void) userData;
if( inputBuffer == NULL )
{
for( i=0; i<framesPerBuffer; i++ )
{
*out++ = 0; /* left - silent */
*out++ = 0; /* right - silent */
}
gNumNoInputs += 1;
}
else
{
for( i=0; i<framesPerBuffer; i++ )
{
*out++ = FUZZ(*in++); /* left - distorted */
*out++ = *in++; /* right - clean */
}
}
return paContinue;
}
/*******************************************************************/
int main(void);
int main(void)
{
PaStreamParameters inputParameters, outputParameters;
PaStream *stream;
PaError err;
err = Pa_Initialize();
if( err != paNoError ) goto error;
inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
if (inputParameters.device == paNoDevice) {
fprintf(stderr,"Error: No default input device.\n");
goto error;
}
inputParameters.channelCount = 2; /* stereo input */
inputParameters.sampleFormat = PA_SAMPLE_TYPE;
inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency;
inputParameters.hostApiSpecificStreamInfo = NULL;
outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
if (outputParameters.device == paNoDevice) {
fprintf(stderr,"Error: No default output device.\n");
goto error;
}
outputParameters.channelCount = 2; /* stereo output */
outputParameters.sampleFormat = PA_SAMPLE_TYPE;
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
err = Pa_OpenStream(
&stream,
&inputParameters,
&outputParameters,
SAMPLE_RATE,
FRAMES_PER_BUFFER,
0, /* paClipOff, */ /* we won't output out of range samples so don't bother clipping them */
fuzzCallback,
NULL );
if( err != paNoError ) goto error;
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Hit ENTER to stop program.\n");
getchar();
err = Pa_CloseStream( stream );
if( err != paNoError ) goto error;
printf("Finished. gNumNoInputs = %d\n", gNumNoInputs );
Pa_Terminate();
return 0;
error:
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return -1;
}

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lib-src/portaudio-v19/examples/paex_mono_asio_channel_select.c Normal file
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/** @file paex_mono_asio_channel_select.c
@ingroup examples_src
@brief Play a monophonic sine wave on a specific ASIO channel.
@author Ross Bencina <rossb@audiomulch.com>
@author Phil Burk <philburk@softsynth.com>
*/
/*
* $Id: paex_mono_asio_channel_select.c 1756 2011-09-08 06:09:29Z philburk $
*
* Authors:
* Ross Bencina <rossb@audiomulch.com>
* Phil Burk <philburk@softsynth.com>
*
* 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"
#include "pa_asio.h"
#define NUM_SECONDS (10)
#define SAMPLE_RATE (44100)
#define AMPLITUDE (0.8)
#define FRAMES_PER_BUFFER (64)
#define OUTPUT_DEVICE Pa_GetDefaultOutputDevice()
#ifndef M_PI
#define M_PI (3.14159265)
#endif
#define TABLE_SIZE (200)
typedef struct
{
float sine[TABLE_SIZE];
int phase;
}
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 )
{
paTestData *data = (paTestData*)userData;
float *out = (float*)outputBuffer;
unsigned long i;
int finished = 0;
/* avoid unused variable warnings */
(void) inputBuffer;
(void) timeInfo;
(void) statusFlags;
for( i=0; i<framesPerBuffer; i++ )
{
*out++ = data->sine[data->phase]; /* left */
data->phase += 1;
if( data->phase >= TABLE_SIZE ) data->phase -= TABLE_SIZE;
}
return finished;
}
/*******************************************************************/
int main(void);
int main(void)
{
PaStreamParameters outputParameters;
PaAsioStreamInfo asioOutputInfo;
PaStream *stream;
PaError err;
paTestData data;
int outputChannelSelectors[1];
int i;
printf("PortAudio Test: output MONO sine wave. SR = %d, BufSize = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER);
/* initialise sinusoidal wavetable */
for( i=0; i<TABLE_SIZE; i++ )
{
data.sine[i] = (float) (AMPLITUDE * sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. ));
}
data.phase = 0;
err = Pa_Initialize();
if( err != paNoError ) goto error;
outputParameters.device = OUTPUT_DEVICE;
outputParameters.channelCount = 1; /* MONO output */
outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
/* Use an ASIO specific structure. WARNING - this is not portable. */
asioOutputInfo.size = sizeof(PaAsioStreamInfo);
asioOutputInfo.hostApiType = paASIO;
asioOutputInfo.version = 1;
asioOutputInfo.flags = paAsioUseChannelSelectors;
outputChannelSelectors[0] = 1; /* skip channel 0 and use the second (right) ASIO device channel */
asioOutputInfo.channelSelectors = outputChannelSelectors;
outputParameters.hostApiSpecificStreamInfo = &asioOutputInfo;
err = Pa_OpenStream(
&stream,
NULL, /* no input */
&outputParameters,
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't bother clipping them */
patestCallback,
&data );
if( err != paNoError ) goto error;
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Play for %d seconds.\n", NUM_SECONDS ); fflush(stdout);
Pa_Sleep( NUM_SECONDS * 1000 );
err = Pa_StopStream( stream );
if( err != paNoError ) goto error;
err = Pa_CloseStream( stream );
if( err != paNoError ) goto error;
Pa_Terminate();
printf("Test finished.\n");
return err;
error:
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return err;
}

533
lib-src/portaudio-v19/examples/paex_ocean_shore.c Normal file
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/** @file paex_ocean_shore.c
@ingroup examples_src
@brief Generate Pink Noise using Gardner method, and make "waves". Provides an example of how to
post stuff to/from the audio callback using lock-free FIFOs implemented by the PA ringbuffer.
Optimization suggested by James McCartney uses a tree
to select which random value to replace.
<pre>
x x x x x x x x x x x x x x x x
x x x x x x x x
x x x x
x x
x
</pre>
Tree is generated by counting trailing zeros in an increasing index.
When the index is zero, no random number is selected.
@author Phil Burk http://www.softsynth.com
Robert Bielik
*/
/*
* $Id: paex_ocean_shore.c 1816 2012-02-22 12:20:26Z robiwan $
*
* 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 <stdlib.h>
#include <string.h>
#include <math.h>
#include <time.h>
#include "portaudio.h"
#include "pa_ringbuffer.h"
#include "pa_util.h"
#define PINK_MAX_RANDOM_ROWS (30)
#define PINK_RANDOM_BITS (24)
#define PINK_RANDOM_SHIFT ((sizeof(long)*8)-PINK_RANDOM_BITS)
typedef struct
{
long pink_Rows[PINK_MAX_RANDOM_ROWS];
long pink_RunningSum; /* Used to optimize summing of generators. */
int pink_Index; /* Incremented each sample. */
int pink_IndexMask; /* Index wrapped by ANDing with this mask. */
float pink_Scalar; /* Used to scale within range of -1.0 to +1.0 */
}
PinkNoise;
typedef struct
{
float bq_b0;
float bq_b1;
float bq_b2;
float bq_a1;
float bq_a2;
} BiQuad;
typedef enum
{
State_kAttack,
State_kPreDecay,
State_kDecay,
State_kCnt,
} EnvState;
typedef struct
{
PinkNoise wave_left;
PinkNoise wave_right;
BiQuad wave_bq_coeffs;
float wave_bq_left[2];
float wave_bq_right[2];
EnvState wave_envelope_state;
float wave_envelope_level;
float wave_envelope_max_level;
float wave_pan_left;
float wave_pan_right;
float wave_attack_incr;
float wave_decay_incr;
} OceanWave;
/* Prototypes */
static unsigned long GenerateRandomNumber( void );
void InitializePinkNoise( PinkNoise *pink, int numRows );
float GeneratePinkNoise( PinkNoise *pink );
unsigned GenerateWave( OceanWave* wave, float* output, unsigned noOfFrames);
/************************************************************/
/* Calculate pseudo-random 32 bit number based on linear congruential method. */
static unsigned long GenerateRandomNumber( void )
{
/* Change this seed for different random sequences. */
static unsigned long randSeed = 22222;
randSeed = (randSeed * 196314165) + 907633515;
return randSeed;
}
/************************************************************/
/* Setup PinkNoise structure for N rows of generators. */
void InitializePinkNoise( PinkNoise *pink, int numRows )
{
int i;
long pmax;
pink->pink_Index = 0;
pink->pink_IndexMask = (1<<numRows) - 1;
/* Calculate maximum possible signed random value. Extra 1 for white noise always added. */
pmax = (numRows + 1) * (1<<(PINK_RANDOM_BITS-1));
pink->pink_Scalar = 1.0f / pmax;
/* Initialize rows. */
for( i=0; i<numRows; i++ ) pink->pink_Rows[i] = 0;
pink->pink_RunningSum = 0;
}
/* Generate Pink noise values between -1.0 and +1.0 */
float GeneratePinkNoise( PinkNoise *pink )
{
long newRandom;
long sum;
float output;
/* Increment and mask index. */
pink->pink_Index = (pink->pink_Index + 1) & pink->pink_IndexMask;
/* If index is zero, don't update any random values. */
if( pink->pink_Index != 0 )
{
/* Determine how many trailing zeros in PinkIndex. */
/* This algorithm will hang if n==0 so test first. */
int numZeros = 0;
int n = pink->pink_Index;
while( (n & 1) == 0 )
{
n = n >> 1;
numZeros++;
}
/* Replace the indexed ROWS random value.
* Subtract and add back to RunningSum instead of adding all the random
* values together. Only one changes each time.
*/
pink->pink_RunningSum -= pink->pink_Rows[numZeros];
newRandom = ((long)GenerateRandomNumber()) >> PINK_RANDOM_SHIFT;
pink->pink_RunningSum += newRandom;
pink->pink_Rows[numZeros] = newRandom;
}
/* Add extra white noise value. */
newRandom = ((long)GenerateRandomNumber()) >> PINK_RANDOM_SHIFT;
sum = pink->pink_RunningSum + newRandom;
/* Scale to range of -1.0 to 0.9999. */
output = pink->pink_Scalar * sum;
return output;
}
float ProcessBiquad(const BiQuad* coeffs, float* memory, float input)
{
float w = input - coeffs->bq_a1 * memory[0] - coeffs->bq_a2 * memory[1];
float out = coeffs->bq_b1 * memory[0] + coeffs->bq_b2 * memory[1] + coeffs->bq_b0 * w;
memory[1] = memory[0];
memory[0] = w;
return out;
}
static const float one_over_2Q_LP = 0.3f;
static const float one_over_2Q_HP = 1.0f;
unsigned GenerateWave( OceanWave* wave, float* output, unsigned noOfFrames )
{
unsigned retval=0,i;
float targetLevel, levelIncr, currentLevel;
switch (wave->wave_envelope_state)
{
case State_kAttack:
targetLevel = noOfFrames * wave->wave_attack_incr + wave->wave_envelope_level;
if (targetLevel >= wave->wave_envelope_max_level)
{
/* Go to decay state */
wave->wave_envelope_state = State_kPreDecay;
targetLevel = wave->wave_envelope_max_level;
}
/* Calculate lowpass biquad coeffs
alpha = sin(w0)/(2*Q)
b0 = (1 - cos(w0))/2
b1 = 1 - cos(w0)
b2 = (1 - cos(w0))/2
a0 = 1 + alpha
a1 = -2*cos(w0)
a2 = 1 - alpha
w0 = [0 - pi[
*/
{
const float w0 = 3.141592654f * targetLevel / wave->wave_envelope_max_level;
const float alpha = sinf(w0) * one_over_2Q_LP;
const float cosw0 = cosf(w0);
const float a0_fact = 1.0f / (1.0f + alpha);
wave->wave_bq_coeffs.bq_b1 = (1.0f - cosw0) * a0_fact;
wave->wave_bq_coeffs.bq_b0 = wave->wave_bq_coeffs.bq_b1 * 0.5f;
wave->wave_bq_coeffs.bq_b2 = wave->wave_bq_coeffs.bq_b0;
wave->wave_bq_coeffs.bq_a2 = (1.0f - alpha) * a0_fact;
wave->wave_bq_coeffs.bq_a1 = -2.0f * cosw0 * a0_fact;
}
break;
case State_kPreDecay:
/* Reset biquad state */
memset(wave->wave_bq_left, 0, 2 * sizeof(float));
memset(wave->wave_bq_right, 0, 2 * sizeof(float));
wave->wave_envelope_state = State_kDecay;
/* Deliberate fall-through */
case State_kDecay:
targetLevel = noOfFrames * wave->wave_decay_incr + wave->wave_envelope_level;
if (targetLevel < 0.001f)
{
/* < -60 dB, we're done */
wave->wave_envelope_state = 3;
retval = 1;
}
/* Calculate highpass biquad coeffs
alpha = sin(w0)/(2*Q)
b0 = (1 + cos(w0))/2
b1 = -(1 + cos(w0))
b2 = (1 + cos(w0))/2
a0 = 1 + alpha
a1 = -2*cos(w0)
a2 = 1 - alpha
w0 = [0 - pi/2[
*/
{
const float v = targetLevel / wave->wave_envelope_max_level;
const float w0 = 1.5707963f * (1.0f - (v*v));
const float alpha = sinf(w0) * one_over_2Q_HP;
const float cosw0 = cosf(w0);
const float a0_fact = 1.0f / (1.0f + alpha);
wave->wave_bq_coeffs.bq_b1 = (float)(- (1 + cosw0) * a0_fact);
wave->wave_bq_coeffs.bq_b0 = -wave->wave_bq_coeffs.bq_b1 * 0.5f;
wave->wave_bq_coeffs.bq_b2 = wave->wave_bq_coeffs.bq_b0;
wave->wave_bq_coeffs.bq_a2 = (float)((1.0 - alpha) * a0_fact);
wave->wave_bq_coeffs.bq_a1 = (float)(-2.0 * cosw0 * a0_fact);
}
break;
default:
break;
}
currentLevel = wave->wave_envelope_level;
wave->wave_envelope_level = targetLevel;
levelIncr = (targetLevel - currentLevel) / noOfFrames;
for (i = 0; i < noOfFrames; ++i, currentLevel += levelIncr)
{
(*output++) += ProcessBiquad(&wave->wave_bq_coeffs, wave->wave_bq_left, (GeneratePinkNoise(&wave->wave_left))) * currentLevel * wave->wave_pan_left;
(*output++) += ProcessBiquad(&wave->wave_bq_coeffs, wave->wave_bq_right, (GeneratePinkNoise(&wave->wave_right))) * currentLevel * wave->wave_pan_right;
}
return retval;
}
/*******************************************************************/
/* Context for callback routine. */
typedef struct
{
OceanWave* waves[16]; /* Maximum 16 waves */
unsigned noOfActiveWaves;
/* Ring buffer (FIFO) for "communicating" towards audio callback */
PaUtilRingBuffer rBufToRT;
void* rBufToRTData;
/* Ring buffer (FIFO) for "communicating" from audio callback */
PaUtilRingBuffer rBufFromRT;
void* rBufFromRTData;
}
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 i;
paTestData *data = (paTestData*)userData;
float *out = (float*)outputBuffer;
(void) inputBuffer; /* Prevent "unused variable" warnings. */
/* Reset output data first */
memset(out, 0, framesPerBuffer * 2 * sizeof(float));
for (i = 0; i < 16; ++i)
{
/* Consume the input queue */
if (data->waves[i] == 0 && PaUtil_GetRingBufferReadAvailable(&data->rBufToRT))
{
OceanWave* ptr = 0;
PaUtil_ReadRingBuffer(&data->rBufToRT, &ptr, 1);
data->waves[i] = ptr;
}
if (data->waves[i] != 0)
{
if (GenerateWave(data->waves[i], out, framesPerBuffer))
{
/* If wave is "done", post it back to the main thread for deletion */
PaUtil_WriteRingBuffer(&data->rBufFromRT, &data->waves[i], 1);
data->waves[i] = 0;
}
}
}
return paContinue;
}
#define NEW_ROW_SIZE (12 + (8*rand())/RAND_MAX)
OceanWave* InitializeWave(double SR, float attackInSeconds, float maxLevel, float positionLeftRight)
{
OceanWave* wave = NULL;
static unsigned lastNoOfRows = 12;
unsigned newNoOfRows;
wave = (OceanWave*)PaUtil_AllocateMemory(sizeof(OceanWave));
if (wave != NULL)
{
InitializePinkNoise(&wave->wave_left, lastNoOfRows);
while ((newNoOfRows = NEW_ROW_SIZE) == lastNoOfRows);
InitializePinkNoise(&wave->wave_right, newNoOfRows);
lastNoOfRows = newNoOfRows;
wave->wave_envelope_state = State_kAttack;
wave->wave_envelope_level = 0.f;
wave->wave_envelope_max_level = maxLevel;
wave->wave_attack_incr = wave->wave_envelope_max_level / (attackInSeconds * (float)SR);
wave->wave_decay_incr = - wave->wave_envelope_max_level / (attackInSeconds * 4 * (float)SR);
wave->wave_pan_left = sqrtf(1.0 - positionLeftRight);
wave->wave_pan_right = sqrtf(positionLeftRight);
}
return wave;
}
static float GenerateFloatRandom(float minValue, float maxValue)
{
return minValue + ((maxValue - minValue) * rand()) / RAND_MAX;
}
/*******************************************************************/
int main(void);
int main(void)
{
PaStream* stream;
PaError err;
paTestData data = {0};
PaStreamParameters outputParameters;
double tstamp;
double tstart;
double tdelta = 0;
static const double SR = 44100.0;
static const int FPB = 128; /* Frames per buffer: 2.9 ms buffers. */
/* Initialize communication buffers (queues) */
data.rBufToRTData = PaUtil_AllocateMemory(sizeof(OceanWave*) * 256);
if (data.rBufToRTData == NULL)
{
return 1;
}
PaUtil_InitializeRingBuffer(&data.rBufToRT, sizeof(OceanWave*), 256, data.rBufToRTData);
data.rBufFromRTData = PaUtil_AllocateMemory(sizeof(OceanWave*) * 256);
if (data.rBufFromRTData == NULL)
{
return 1;
}
PaUtil_InitializeRingBuffer(&data.rBufFromRT, sizeof(OceanWave*), 256, data.rBufFromRTData);
err = Pa_Initialize();
if( err != paNoError ) goto error;
/* Open a stereo PortAudio stream so we can hear the result. */
outputParameters.device = Pa_GetDefaultOutputDevice(); /* Take the default output device. */
if (outputParameters.device == paNoDevice) {
fprintf(stderr,"Error: No default output device.\n");
goto error;
}
outputParameters.channelCount = 2; /* Stereo output, most likely supported. */
outputParameters.hostApiSpecificStreamInfo = NULL;
outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output. */
outputParameters.suggestedLatency = Pa_GetDeviceInfo(outputParameters.device)->defaultLowOutputLatency;
err = Pa_OpenStream(&stream,
NULL, /* No input. */
&outputParameters,
SR, /* Sample rate. */
FPB, /* Frames per buffer. */
paDitherOff, /* Clip but don't dither */
patestCallback,
&data);
if( err != paNoError ) goto error;
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Stereo \"ocean waves\" for one minute...\n");
tstart = PaUtil_GetTime();
tstamp = tstart;
srand( (unsigned)time(NULL) );
while( ( err = Pa_IsStreamActive( stream ) ) == 1 )
{
const double tcurrent = PaUtil_GetTime();
/* Delete "waves" that the callback is finished with */
while (PaUtil_GetRingBufferReadAvailable(&data.rBufFromRT) > 0)
{
OceanWave* ptr = 0;
PaUtil_ReadRingBuffer(&data.rBufFromRT, &ptr, 1);
if (ptr != 0)
{
printf("Wave is deleted...\n");
PaUtil_FreeMemory(ptr);
--data.noOfActiveWaves;
}
}
if (tcurrent - tstart < 60.0) /* Only start new "waves" during one minute */
{
if (tcurrent >= tstamp)
{
double tdelta = GenerateFloatRandom(1.0f, 4.0f);
tstamp += tdelta;
if (data.noOfActiveWaves<16)
{
const float attackTime = GenerateFloatRandom(2.0f, 6.0f);
const float level = GenerateFloatRandom(0.1f, 1.0f);
const float pos = GenerateFloatRandom(0.0f, 1.0f);
OceanWave* p = InitializeWave(SR, attackTime, level, pos);
if (p != NULL)
{
/* Post wave to audio callback */
PaUtil_WriteRingBuffer(&data.rBufToRT, &p, 1);
++data.noOfActiveWaves;
printf("Starting wave at level = %.2f, attack = %.2lf, pos = %.2lf\n", level, attackTime, pos);
}
}
}
}
else
{
if (data.noOfActiveWaves == 0)
{
printf("All waves finished!\n");
break;
}
}
Pa_Sleep(100);
}
if( err < 0 ) goto error;
err = Pa_CloseStream( stream );
if( err != paNoError ) goto error;
if (data.rBufToRTData)
{
PaUtil_FreeMemory(data.rBufToRTData);
}
if (data.rBufFromRTData)
{
PaUtil_FreeMemory(data.rBufFromRTData);
}
Pa_Sleep(1000);
Pa_Terminate();
return 0;
error:
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return 0;
}

280
lib-src/portaudio-v19/examples/paex_pink.c Normal file
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@@ -0,0 +1,280 @@
/** @file paex_pink.c
@ingroup examples_src
@brief Generate Pink Noise using Gardner method.
Optimization suggested by James McCartney uses a tree
to select which random value to replace.
<pre>
x x x x x x x x x x x x x x x x
x x x x x x x x
x x x x
x x
x
</pre>
Tree is generated by counting trailing zeros in an increasing index.
When the index is zero, no random number is selected.
@author Phil Burk http://www.softsynth.com
*/
/*
* $Id: paex_pink.c 1752 2011-09-08 03:21:55Z philburk $
*
* 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 PINK_MAX_RANDOM_ROWS (30)
#define PINK_RANDOM_BITS (24)
#define PINK_RANDOM_SHIFT ((sizeof(long)*8)-PINK_RANDOM_BITS)
typedef struct
{
long pink_Rows[PINK_MAX_RANDOM_ROWS];
long pink_RunningSum; /* Used to optimize summing of generators. */
int pink_Index; /* Incremented each sample. */
int pink_IndexMask; /* Index wrapped by ANDing with this mask. */
float pink_Scalar; /* Used to scale within range of -1.0 to +1.0 */
}
PinkNoise;
/* Prototypes */
static unsigned long GenerateRandomNumber( void );
void InitializePinkNoise( PinkNoise *pink, int numRows );
float GeneratePinkNoise( PinkNoise *pink );
/************************************************************/
/* Calculate pseudo-random 32 bit number based on linear congruential method. */
static unsigned long GenerateRandomNumber( void )
{
/* Change this seed for different random sequences. */
static unsigned long randSeed = 22222;
randSeed = (randSeed * 196314165) + 907633515;
return randSeed;
}
/************************************************************/
/* Setup PinkNoise structure for N rows of generators. */
void InitializePinkNoise( PinkNoise *pink, int numRows )
{
int i;
long pmax;
pink->pink_Index = 0;
pink->pink_IndexMask = (1<<numRows) - 1;
/* Calculate maximum possible signed random value. Extra 1 for white noise always added. */
pmax = (numRows + 1) * (1<<(PINK_RANDOM_BITS-1));
pink->pink_Scalar = 1.0f / pmax;
/* Initialize rows. */
for( i=0; i<numRows; i++ ) pink->pink_Rows[i] = 0;
pink->pink_RunningSum = 0;
}
#define PINK_MEASURE
#ifdef PINK_MEASURE
float pinkMax = -999.0;
float pinkMin = 999.0;
#endif
/* Generate Pink noise values between -1.0 and +1.0 */
float GeneratePinkNoise( PinkNoise *pink )
{
long newRandom;
long sum;
float output;
/* Increment and mask index. */
pink->pink_Index = (pink->pink_Index + 1) & pink->pink_IndexMask;
/* If index is zero, don't update any random values. */
if( pink->pink_Index != 0 )
{
/* Determine how many trailing zeros in PinkIndex. */
/* This algorithm will hang if n==0 so test first. */
int numZeros = 0;
int n = pink->pink_Index;
while( (n & 1) == 0 )
{
n = n >> 1;
numZeros++;
}
/* Replace the indexed ROWS random value.
* Subtract and add back to RunningSum instead of adding all the random
* values together. Only one changes each time.
*/
pink->pink_RunningSum -= pink->pink_Rows[numZeros];
newRandom = ((long)GenerateRandomNumber()) >> PINK_RANDOM_SHIFT;
pink->pink_RunningSum += newRandom;
pink->pink_Rows[numZeros] = newRandom;
}
/* Add extra white noise value. */
newRandom = ((long)GenerateRandomNumber()) >> PINK_RANDOM_SHIFT;
sum = pink->pink_RunningSum + newRandom;
/* Scale to range of -1.0 to 0.9999. */
output = pink->pink_Scalar * sum;
#ifdef PINK_MEASURE
/* Check Min/Max */
if( output > pinkMax ) pinkMax = output;
else if( output < pinkMin ) pinkMin = output;
#endif
return output;
}
/*******************************************************************/
#define PINK_TEST
#ifdef PINK_TEST
/* Context for callback routine. */
typedef struct
{
PinkNoise leftPink;
PinkNoise rightPink;
unsigned int sampsToGo;
}
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 finished;
int i;
int numFrames;
paTestData *data = (paTestData*)userData;
float *out = (float*)outputBuffer;
(void) inputBuffer; /* Prevent "unused variable" warnings. */
/* Are we almost at end. */
if( data->sampsToGo < framesPerBuffer )
{
numFrames = data->sampsToGo;
finished = 1;
}
else
{
numFrames = framesPerBuffer;
finished = 0;
}
for( i=0; i<numFrames; i++ )
{
*out++ = GeneratePinkNoise( &data->leftPink );
*out++ = GeneratePinkNoise( &data->rightPink );
}
data->sampsToGo -= numFrames;
return finished;
}
/*******************************************************************/
int main(void);
int main(void)
{
PaStream* stream;
PaError err;
paTestData data;
PaStreamParameters outputParameters;
int totalSamps;
static const double SR = 44100.0;
static const int FPB = 2048; /* Frames per buffer: 46 ms buffers. */
/* Initialize two pink noise signals with different numbers of rows. */
InitializePinkNoise( &data.leftPink, 12 );
InitializePinkNoise( &data.rightPink, 16 );
/* Look at a few values. */
{
int i;
float pink;
for( i=0; i<20; i++ )
{
pink = GeneratePinkNoise( &data.leftPink );
printf("Pink = %f\n", pink );
}
}
data.sampsToGo = totalSamps = (int)(60.0 * SR); /* Play a whole minute. */
err = Pa_Initialize();
if( err != paNoError ) goto error;
/* Open a stereo PortAudio stream so we can hear the result. */
outputParameters.device = Pa_GetDefaultOutputDevice(); /* Take the default output device. */
if (outputParameters.device == paNoDevice) {
fprintf(stderr,"Error: No default output device.\n");
goto error;
}
outputParameters.channelCount = 2; /* Stereo output, most likely supported. */
outputParameters.hostApiSpecificStreamInfo = NULL;
outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output. */
outputParameters.suggestedLatency =
Pa_GetDeviceInfo(outputParameters.device)->defaultLowOutputLatency;
err = Pa_OpenStream(&stream,
NULL, /* No input. */
&outputParameters,
SR, /* Sample rate. */
FPB, /* Frames per buffer. */
paClipOff, /* we won't output out of range samples so don't bother clipping them */
patestCallback,
&data);
if( err != paNoError ) goto error;
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Stereo pink noise for one minute...\n");
while( ( err = Pa_IsStreamActive( stream ) ) == 1 ) Pa_Sleep(100);
if( err < 0 ) goto error;
err = Pa_CloseStream( stream );
if( err != paNoError ) goto error;
#ifdef PINK_MEASURE
printf("Pink min = %f, max = %f\n", pinkMin, pinkMax );
#endif
Pa_Terminate();
return 0;
error:
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return 0;
}
#endif /* PINK_TEST */

221
lib-src/portaudio-v19/examples/paex_read_write_wire.c Normal file
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@@ -0,0 +1,221 @@
/** @file paex_read_write_wire.c
@ingroup examples_src
@brief Tests full duplex blocking I/O by passing input straight to output.
@author Bjorn Roche. XO Audio LLC for Z-Systems Engineering.
@author based on code by: Phil Burk http://www.softsynth.com
@author based on code by: Ross Bencina rossb@audiomulch.com
*/
/*
* $Id: patest_read_record.c 757 2004-02-13 07:48:10Z rossbencina $
*
* 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 <stdlib.h>
#include <string.h>
#include "portaudio.h"
/* #define SAMPLE_RATE (17932) // Test failure to open with this value. */
#define SAMPLE_RATE (44100)
#define FRAMES_PER_BUFFER (1024)
#define NUM_CHANNELS (2)
#define NUM_SECONDS (15)
/* #define DITHER_FLAG (paDitherOff) */
#define DITHER_FLAG (0) /**/
/* @todo Underflow and overflow is disabled until we fix priming of blocking write. */
#define CHECK_OVERFLOW (0)
#define CHECK_UNDERFLOW (0)
/* Select sample format. */
#if 0
#define PA_SAMPLE_TYPE paFloat32
#define SAMPLE_SIZE (4)
#define SAMPLE_SILENCE (0.0f)
#define CLEAR(a) memset( (a), 0, FRAMES_PER_BUFFER * NUM_CHANNELS * SAMPLE_SIZE )
#define PRINTF_S_FORMAT "%.8f"
#elif 0
#define PA_SAMPLE_TYPE paInt16
#define SAMPLE_SIZE (2)
#define SAMPLE_SILENCE (0)
#define CLEAR(a) memset( (a), 0, FRAMES_PER_BUFFER * NUM_CHANNELS * SAMPLE_SIZE )
#define PRINTF_S_FORMAT "%d"
#elif 1
#define PA_SAMPLE_TYPE paInt24
#define SAMPLE_SIZE (3)
#define SAMPLE_SILENCE (0)
#define CLEAR(a) memset( (a), 0, FRAMES_PER_BUFFER * NUM_CHANNELS * SAMPLE_SIZE )
#define PRINTF_S_FORMAT "%d"
#elif 0
#define PA_SAMPLE_TYPE paInt8
#define SAMPLE_SIZE (1)
#define SAMPLE_SILENCE (0)
#define CLEAR(a) memset( (a), 0, FRAMES_PER_BUFFER * NUM_CHANNELS * SAMPLE_SIZE )
#define PRINTF_S_FORMAT "%d"
#else
#define PA_SAMPLE_TYPE paUInt8
#define SAMPLE_SIZE (1)
#define SAMPLE_SILENCE (128)
#define CLEAR( a ) { \
int i; \
for( i=0; i<FRAMES_PER_BUFFER*NUM_CHANNELS; i++ ) \
((unsigned char *)a)[i] = (SAMPLE_SILENCE); \
}
#define PRINTF_S_FORMAT "%d"
#endif
/*******************************************************************/
int main(void);
int main(void)
{
PaStreamParameters inputParameters, outputParameters;
PaStream *stream = NULL;
PaError err;
char *sampleBlock;
int i;
int numBytes;
printf("patest_read_write_wire.c\n"); fflush(stdout);
numBytes = FRAMES_PER_BUFFER * NUM_CHANNELS * SAMPLE_SIZE ;
sampleBlock = (char *) malloc( numBytes );
if( sampleBlock == NULL )
{
printf("Could not allocate record array.\n");
exit(1);
}
CLEAR( sampleBlock );
err = Pa_Initialize();
if( err != paNoError ) goto error;
inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
printf( "Input device # %d.\n", inputParameters.device );
printf( "Input LL: %g s\n", Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency );
printf( "Input HL: %g s\n", Pa_GetDeviceInfo( inputParameters.device )->defaultHighInputLatency );
inputParameters.channelCount = NUM_CHANNELS;
inputParameters.sampleFormat = PA_SAMPLE_TYPE;
inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultHighInputLatency ;
inputParameters.hostApiSpecificStreamInfo = NULL;
outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
printf( "Output device # %d.\n", outputParameters.device );
printf( "Output LL: %g s\n", Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency );
printf( "Output HL: %g s\n", Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency );
outputParameters.channelCount = NUM_CHANNELS;
outputParameters.sampleFormat = PA_SAMPLE_TYPE;
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
/* -- setup -- */
err = Pa_OpenStream(
&stream,
&inputParameters,
&outputParameters,
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't bother clipping them */
NULL, /* no callback, use blocking API */
NULL ); /* no callback, so no callback userData */
if( err != paNoError ) goto error;
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Wire on. Will run %d seconds.\n", NUM_SECONDS); fflush(stdout);
for( i=0; i<(NUM_SECONDS*SAMPLE_RATE)/FRAMES_PER_BUFFER; ++i )
{
err = Pa_WriteStream( stream, sampleBlock, FRAMES_PER_BUFFER );
if( err && CHECK_UNDERFLOW ) goto xrun;
err = Pa_ReadStream( stream, sampleBlock, FRAMES_PER_BUFFER );
if( err && CHECK_OVERFLOW ) goto xrun;
}
err = Pa_StopStream( stream );
if( err != paNoError ) goto error;
CLEAR( sampleBlock );
/*
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Wire on. Interrupt to stop.\n"); fflush(stdout);
while( 1 )
{
err = Pa_WriteStream( stream, sampleBlock, FRAMES_PER_BUFFER );
if( err ) goto xrun;
err = Pa_ReadStream( stream, sampleBlock, FRAMES_PER_BUFFER );
if( err ) goto xrun;
}
err = Pa_StopStream( stream );
if( err != paNoError ) goto error;
Pa_CloseStream( stream );
*/
free( sampleBlock );
Pa_Terminate();
return 0;
xrun:
if( stream ) {
Pa_AbortStream( stream );
Pa_CloseStream( stream );
}
free( sampleBlock );
Pa_Terminate();
if( err & paInputOverflow )
fprintf( stderr, "Input Overflow.\n" );
if( err & paOutputUnderflow )
fprintf( stderr, "Output Underflow.\n" );
return -2;
error:
if( stream ) {
Pa_AbortStream( stream );
Pa_CloseStream( stream );
}
free( sampleBlock );
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return -1;
}

354
lib-src/portaudio-v19/examples/paex_record.c Normal file
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/** @file paex_record.c
@ingroup examples_src
@brief Record input into an array; Save array to a file; Playback recorded data.
@author Phil Burk http://www.softsynth.com
*/
/*
* $Id: paex_record.c 1752 2011-09-08 03:21:55Z philburk $
*
* 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 <stdlib.h>
#include "portaudio.h"
/* #define SAMPLE_RATE (17932) // Test failure to open with this value. */
#define SAMPLE_RATE (44100)
#define FRAMES_PER_BUFFER (512)
#define NUM_SECONDS (5)
#define NUM_CHANNELS (2)
/* #define DITHER_FLAG (paDitherOff) */
#define DITHER_FLAG (0) /**/
/** Set to 1 if you want to capture the recording to a file. */
#define WRITE_TO_FILE (0)
/* Select sample format. */
#if 1
#define PA_SAMPLE_TYPE paFloat32
typedef float SAMPLE;
#define SAMPLE_SILENCE (0.0f)
#define PRINTF_S_FORMAT "%.8f"
#elif 1
#define PA_SAMPLE_TYPE paInt16
typedef short SAMPLE;
#define SAMPLE_SILENCE (0)
#define PRINTF_S_FORMAT "%d"
#elif 0
#define PA_SAMPLE_TYPE paInt8
typedef char SAMPLE;
#define SAMPLE_SILENCE (0)
#define PRINTF_S_FORMAT "%d"
#else
#define PA_SAMPLE_TYPE paUInt8
typedef unsigned char SAMPLE;
#define SAMPLE_SILENCE (128)
#define PRINTF_S_FORMAT "%d"
#endif
typedef struct
{
int frameIndex; /* Index into sample array. */
int maxFrameIndex;
SAMPLE *recordedSamples;
}
paTestData;
/* This routine will be called by the PortAudio engine when audio is needed.
** It may be 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 recordCallback( const void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void *userData )
{
paTestData *data = (paTestData*)userData;
const SAMPLE *rptr = (const SAMPLE*)inputBuffer;
SAMPLE *wptr = &data->recordedSamples[data->frameIndex * NUM_CHANNELS];
long framesToCalc;
long i;
int finished;
unsigned long framesLeft = data->maxFrameIndex - data->frameIndex;
(void) outputBuffer; /* Prevent unused variable warnings. */
(void) timeInfo;
(void) statusFlags;
(void) userData;
if( framesLeft < framesPerBuffer )
{
framesToCalc = framesLeft;
finished = paComplete;
}
else
{
framesToCalc = framesPerBuffer;
finished = paContinue;
}
if( inputBuffer == NULL )
{
for( i=0; i<framesToCalc; i++ )
{
*wptr++ = SAMPLE_SILENCE; /* left */
if( NUM_CHANNELS == 2 ) *wptr++ = SAMPLE_SILENCE; /* right */
}
}
else
{
for( i=0; i<framesToCalc; i++ )
{
*wptr++ = *rptr++; /* left */
if( NUM_CHANNELS == 2 ) *wptr++ = *rptr++; /* right */
}
}
data->frameIndex += framesToCalc;
return finished;
}
/* This routine will be called by the PortAudio engine when audio is needed.
** It may be 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 playCallback( const void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void *userData )
{
paTestData *data = (paTestData*)userData;
SAMPLE *rptr = &data->recordedSamples[data->frameIndex * NUM_CHANNELS];
SAMPLE *wptr = (SAMPLE*)outputBuffer;
unsigned int i;
int finished;
unsigned int framesLeft = data->maxFrameIndex - data->frameIndex;
(void) inputBuffer; /* Prevent unused variable warnings. */
(void) timeInfo;
(void) statusFlags;
(void) userData;
if( framesLeft < framesPerBuffer )
{
/* final buffer... */
for( i=0; i<framesLeft; i++ )
{
*wptr++ = *rptr++; /* left */
if( NUM_CHANNELS == 2 ) *wptr++ = *rptr++; /* right */
}
for( ; i<framesPerBuffer; i++ )
{
*wptr++ = 0; /* left */
if( NUM_CHANNELS == 2 ) *wptr++ = 0; /* right */
}
data->frameIndex += framesLeft;
finished = paComplete;
}
else
{
for( i=0; i<framesPerBuffer; i++ )
{
*wptr++ = *rptr++; /* left */
if( NUM_CHANNELS == 2 ) *wptr++ = *rptr++; /* right */
}
data->frameIndex += framesPerBuffer;
finished = paContinue;
}
return finished;
}
/*******************************************************************/
int main(void);
int main(void)
{
PaStreamParameters inputParameters,
outputParameters;
PaStream* stream;
PaError err = paNoError;
paTestData data;
int i;
int totalFrames;
int numSamples;
int numBytes;
SAMPLE max, val;
double average;
printf("patest_record.c\n"); fflush(stdout);
data.maxFrameIndex = totalFrames = NUM_SECONDS * SAMPLE_RATE; /* Record for a few seconds. */
data.frameIndex = 0;
numSamples = totalFrames * NUM_CHANNELS;
numBytes = numSamples * sizeof(SAMPLE);
data.recordedSamples = (SAMPLE *) malloc( numBytes ); /* From now on, recordedSamples is initialised. */
if( data.recordedSamples == NULL )
{
printf("Could not allocate record array.\n");
goto done;
}
for( i=0; i<numSamples; i++ ) data.recordedSamples[i] = 0;
err = Pa_Initialize();
if( err != paNoError ) goto done;
inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
if (inputParameters.device == paNoDevice) {
fprintf(stderr,"Error: No default input device.\n");
goto done;
}
inputParameters.channelCount = 2; /* stereo input */
inputParameters.sampleFormat = PA_SAMPLE_TYPE;
inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency;
inputParameters.hostApiSpecificStreamInfo = NULL;
/* Record some audio. -------------------------------------------- */
err = Pa_OpenStream(
&stream,
&inputParameters,
NULL, /* &outputParameters, */
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't bother clipping them */
recordCallback,
&data );
if( err != paNoError ) goto done;
err = Pa_StartStream( stream );
if( err != paNoError ) goto done;
printf("\n=== Now recording!! Please speak into the microphone. ===\n"); fflush(stdout);
while( ( err = Pa_IsStreamActive( stream ) ) == 1 )
{
Pa_Sleep(1000);
printf("index = %d\n", data.frameIndex ); fflush(stdout);
}
if( err < 0 ) goto done;
err = Pa_CloseStream( stream );
if( err != paNoError ) goto done;
/* Measure maximum peak amplitude. */
max = 0;
average = 0.0;
for( i=0; i<numSamples; i++ )
{
val = data.recordedSamples[i];
if( val < 0 ) val = -val; /* ABS */
if( val > max )
{
max = val;
}
average += val;
}
average = average / (double)numSamples;
printf("sample max amplitude = "PRINTF_S_FORMAT"\n", max );
printf("sample average = %lf\n", average );
/* Write recorded data to a file. */
#if WRITE_TO_FILE
{
FILE *fid;
fid = fopen("recorded.raw", "wb");
if( fid == NULL )
{
printf("Could not open file.");
}
else
{
fwrite( data.recordedSamples, NUM_CHANNELS * sizeof(SAMPLE), totalFrames, fid );
fclose( fid );
printf("Wrote data to 'recorded.raw'\n");
}
}
#endif
/* Playback recorded data. -------------------------------------------- */
data.frameIndex = 0;
outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
if (outputParameters.device == paNoDevice) {
fprintf(stderr,"Error: No default output device.\n");
goto done;
}
outputParameters.channelCount = 2; /* stereo output */
outputParameters.sampleFormat = PA_SAMPLE_TYPE;
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
printf("\n=== Now playing back. ===\n"); fflush(stdout);
err = Pa_OpenStream(
&stream,
NULL, /* no input */
&outputParameters,
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't bother clipping them */
playCallback,
&data );
if( err != paNoError ) goto done;
if( stream )
{
err = Pa_StartStream( stream );
if( err != paNoError ) goto done;
printf("Waiting for playback to finish.\n"); fflush(stdout);
while( ( err = Pa_IsStreamActive( stream ) ) == 1 ) Pa_Sleep(100);
if( err < 0 ) goto done;
err = Pa_CloseStream( stream );
if( err != paNoError ) goto done;
printf("Done.\n"); fflush(stdout);
}
done:
Pa_Terminate();
if( data.recordedSamples ) /* Sure it is NULL or valid. */
free( data.recordedSamples );
if( err != paNoError )
{
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
err = 1; /* Always return 0 or 1, but no other return codes. */
}
return err;
}

453
lib-src/portaudio-v19/examples/paex_record_file.c Normal file
View File

@@ -0,0 +1,453 @@
/** @file paex_record_file.c
@ingroup examples_src
@brief Record input into a file, then playback recorded data from file (Windows only at the moment)
@author Robert Bielik
*/
/*
* $Id: paex_record_file.c 1752 2011-09-08 03:21:55Z philburk $
*
* 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 <stdlib.h>
#include "portaudio.h"
#include "pa_ringbuffer.h"
#include "pa_util.h"
#ifdef _WIN32
#include <windows.h>
#include <process.h>
#endif
/* #define SAMPLE_RATE (17932) // Test failure to open with this value. */
#define FILE_NAME "audio_data.raw"
#define SAMPLE_RATE (44100)
#define FRAMES_PER_BUFFER (512)
#define NUM_SECONDS (10)
#define NUM_CHANNELS (2)
#define NUM_WRITES_PER_BUFFER (4)
/* #define DITHER_FLAG (paDitherOff) */
#define DITHER_FLAG (0) /**/
/* Select sample format. */
#if 1
#define PA_SAMPLE_TYPE paFloat32
typedef float SAMPLE;
#define SAMPLE_SILENCE (0.0f)
#define PRINTF_S_FORMAT "%.8f"
#elif 1
#define PA_SAMPLE_TYPE paInt16
typedef short SAMPLE;
#define SAMPLE_SILENCE (0)
#define PRINTF_S_FORMAT "%d"
#elif 0
#define PA_SAMPLE_TYPE paInt8
typedef char SAMPLE;
#define SAMPLE_SILENCE (0)
#define PRINTF_S_FORMAT "%d"
#else
#define PA_SAMPLE_TYPE paUInt8
typedef unsigned char SAMPLE;
#define SAMPLE_SILENCE (128)
#define PRINTF_S_FORMAT "%d"
#endif
typedef struct
{
unsigned frameIndex;
int threadSyncFlag;
SAMPLE *ringBufferData;
PaUtilRingBuffer ringBuffer;
FILE *file;
void *threadHandle;
}
paTestData;
/* This routine is run in a separate thread to write data from the ring buffer into a file (during Recording) */
static int threadFunctionWriteToRawFile(void* ptr)
{
paTestData* pData = (paTestData*)ptr;
/* Mark thread started */
pData->threadSyncFlag = 0;
while (1)
{
ring_buffer_size_t elementsInBuffer = PaUtil_GetRingBufferReadAvailable(&pData->ringBuffer);
if ( (elementsInBuffer >= pData->ringBuffer.bufferSize / NUM_WRITES_PER_BUFFER) ||
pData->threadSyncFlag )
{
void* ptr[2] = {0};
ring_buffer_size_t sizes[2] = {0};
/* By using PaUtil_GetRingBufferReadRegions, we can read directly from the ring buffer */
ring_buffer_size_t elementsRead = PaUtil_GetRingBufferReadRegions(&pData->ringBuffer, elementsInBuffer, ptr + 0, sizes + 0, ptr + 1, sizes + 1);
if (elementsRead > 0)
{
int i;
for (i = 0; i < 2 && ptr[i] != NULL; ++i)
{
fwrite(ptr[i], pData->ringBuffer.elementSizeBytes, sizes[i], pData->file);
}
PaUtil_AdvanceRingBufferReadIndex(&pData->ringBuffer, elementsRead);
}
if (pData->threadSyncFlag)
{
break;
}
}
/* Sleep a little while... */
Pa_Sleep(20);
}
pData->threadSyncFlag = 0;
return 0;
}
/* This routine is run in a separate thread to read data from file into the ring buffer (during Playback). When the file
has reached EOF, a flag is set so that the play PA callback can return paComplete */
static int threadFunctionReadFromRawFile(void* ptr)
{
paTestData* pData = (paTestData*)ptr;
while (1)
{
ring_buffer_size_t elementsInBuffer = PaUtil_GetRingBufferWriteAvailable(&pData->ringBuffer);
if (elementsInBuffer >= pData->ringBuffer.bufferSize / NUM_WRITES_PER_BUFFER)
{
void* ptr[2] = {0};
ring_buffer_size_t sizes[2] = {0};
/* By using PaUtil_GetRingBufferWriteRegions, we can write directly into the ring buffer */
PaUtil_GetRingBufferWriteRegions(&pData->ringBuffer, elementsInBuffer, ptr + 0, sizes + 0, ptr + 1, sizes + 1);
if (!feof(pData->file))
{
ring_buffer_size_t itemsReadFromFile = 0;
int i;
for (i = 0; i < 2 && ptr[i] != NULL; ++i)
{
itemsReadFromFile += (ring_buffer_size_t)fread(ptr[i], pData->ringBuffer.elementSizeBytes, sizes[i], pData->file);
}
PaUtil_AdvanceRingBufferWriteIndex(&pData->ringBuffer, itemsReadFromFile);
/* Mark thread started here, that way we "prime" the ring buffer before playback */
pData->threadSyncFlag = 0;
}
else
{
/* No more data to read */
pData->threadSyncFlag = 1;
break;
}
}
/* Sleep a little while... */
Pa_Sleep(20);
}
return 0;
}
typedef int (*ThreadFunctionType)(void*);
/* Start up a new thread in the given function, at the moment only Windows, but should be very easy to extend
to posix type OSs (Linux/Mac) */
static PaError startThread( paTestData* pData, ThreadFunctionType fn )
{
#ifdef _WIN32
typedef unsigned (__stdcall* WinThreadFunctionType)(void*);
pData->threadHandle = (void*)_beginthreadex(NULL, 0, (WinThreadFunctionType)fn, pData, CREATE_SUSPENDED, NULL);
if (pData->threadHandle == NULL) return paUnanticipatedHostError;
/* Set file thread to a little higher prio than normal */
SetThreadPriority(pData->threadHandle, THREAD_PRIORITY_ABOVE_NORMAL);
/* Start it up */
pData->threadSyncFlag = 1;
ResumeThread(pData->threadHandle);
#endif
/* Wait for thread to startup */
while (pData->threadSyncFlag) {
Pa_Sleep(10);
}
return paNoError;
}
static int stopThread( paTestData* pData )
{
pData->threadSyncFlag = 1;
/* Wait for thread to stop */
while (pData->threadSyncFlag) {
Pa_Sleep(10);
}
#ifdef _WIN32
CloseHandle(pData->threadHandle);
pData->threadHandle = 0;
#endif
return paNoError;
}
/* This routine will be called by the PortAudio engine when audio is needed.
** It may be 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 recordCallback( const void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void *userData )
{
paTestData *data = (paTestData*)userData;
ring_buffer_size_t elementsWriteable = PaUtil_GetRingBufferWriteAvailable(&data->ringBuffer);
ring_buffer_size_t elementsToWrite = min(elementsWriteable, (ring_buffer_size_t)(framesPerBuffer * NUM_CHANNELS));
const SAMPLE *rptr = (const SAMPLE*)inputBuffer;
(void) outputBuffer; /* Prevent unused variable warnings. */
(void) timeInfo;
(void) statusFlags;
(void) userData;
data->frameIndex += PaUtil_WriteRingBuffer(&data->ringBuffer, rptr, elementsToWrite);
return paContinue;
}
/* This routine will be called by the PortAudio engine when audio is needed.
** It may be 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 playCallback( const void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void *userData )
{
paTestData *data = (paTestData*)userData;
ring_buffer_size_t elementsToPlay = PaUtil_GetRingBufferReadAvailable(&data->ringBuffer);
ring_buffer_size_t elementsToRead = min(elementsToPlay, (ring_buffer_size_t)(framesPerBuffer * NUM_CHANNELS));
SAMPLE* wptr = (SAMPLE*)outputBuffer;
(void) inputBuffer; /* Prevent unused variable warnings. */
(void) timeInfo;
(void) statusFlags;
(void) userData;
data->frameIndex += PaUtil_ReadRingBuffer(&data->ringBuffer, wptr, elementsToRead);
return data->threadSyncFlag ? paComplete : paContinue;
}
static unsigned NextPowerOf2(unsigned val)
{
val--;
val = (val >> 1) | val;
val = (val >> 2) | val;
val = (val >> 4) | val;
val = (val >> 8) | val;
val = (val >> 16) | val;
return ++val;
}
/*******************************************************************/
int main(void);
int main(void)
{
PaStreamParameters inputParameters,
outputParameters;
PaStream* stream;
PaError err = paNoError;
paTestData data = {0};
unsigned delayCntr;
unsigned numSamples;
unsigned numBytes;
printf("patest_record.c\n"); fflush(stdout);
/* We set the ring buffer size to about 500 ms */
numSamples = NextPowerOf2((unsigned)(SAMPLE_RATE * 0.5 * NUM_CHANNELS));
numBytes = numSamples * sizeof(SAMPLE);
data.ringBufferData = (SAMPLE *) PaUtil_AllocateMemory( numBytes );
if( data.ringBufferData == NULL )
{
printf("Could not allocate ring buffer data.\n");
goto done;
}
if (PaUtil_InitializeRingBuffer(&data.ringBuffer, sizeof(SAMPLE), numSamples, data.ringBufferData) < 0)
{
printf("Failed to initialize ring buffer. Size is not power of 2 ??\n");
goto done;
}
err = Pa_Initialize();
if( err != paNoError ) goto done;
inputParameters.device = Pa_GetDefaultInputDevice(); /* default input device */
if (inputParameters.device == paNoDevice) {
fprintf(stderr,"Error: No default input device.\n");
goto done;
}
inputParameters.channelCount = 2; /* stereo input */
inputParameters.sampleFormat = PA_SAMPLE_TYPE;
inputParameters.suggestedLatency = Pa_GetDeviceInfo( inputParameters.device )->defaultLowInputLatency;
inputParameters.hostApiSpecificStreamInfo = NULL;
/* Record some audio. -------------------------------------------- */
err = Pa_OpenStream(
&stream,
&inputParameters,
NULL, /* &outputParameters, */
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't bother clipping them */
recordCallback,
&data );
if( err != paNoError ) goto done;
/* Open the raw audio 'cache' file... */
data.file = fopen(FILE_NAME, "wb");
if (data.file == 0) goto done;
/* Start the file writing thread */
err = startThread(&data, threadFunctionWriteToRawFile);
if( err != paNoError ) goto done;
err = Pa_StartStream( stream );
if( err != paNoError ) goto done;
printf("\n=== Now recording to '" FILE_NAME "' for %d seconds!! Please speak into the microphone. ===\n", NUM_SECONDS); fflush(stdout);
/* Note that the RECORDING part is limited with TIME, not size of the file and/or buffer, so you can
increase NUM_SECONDS until you run out of disk */
delayCntr = 0;
while( delayCntr++ < NUM_SECONDS )
{
printf("index = %d\n", data.frameIndex ); fflush(stdout);
Pa_Sleep(1000);
}
if( err < 0 ) goto done;
err = Pa_CloseStream( stream );
if( err != paNoError ) goto done;
/* Stop the thread */
err = stopThread(&data);
if( err != paNoError ) goto done;
/* Close file */
fclose(data.file);
data.file = 0;
/* Playback recorded data. -------------------------------------------- */
data.frameIndex = 0;
outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
if (outputParameters.device == paNoDevice) {
fprintf(stderr,"Error: No default output device.\n");
goto done;
}
outputParameters.channelCount = 2; /* stereo output */
outputParameters.sampleFormat = PA_SAMPLE_TYPE;
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
printf("\n=== Now playing back from file '" FILE_NAME "' until end-of-file is reached ===\n"); fflush(stdout);
err = Pa_OpenStream(
&stream,
NULL, /* no input */
&outputParameters,
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't bother clipping them */
playCallback,
&data );
if( err != paNoError ) goto done;
if( stream )
{
/* Open file again for reading */
data.file = fopen(FILE_NAME, "rb");
if (data.file != 0)
{
/* Start the file reading thread */
err = startThread(&data, threadFunctionReadFromRawFile);
if( err != paNoError ) goto done;
err = Pa_StartStream( stream );
if( err != paNoError ) goto done;
printf("Waiting for playback to finish.\n"); fflush(stdout);
/* The playback will end when EOF is reached */
while( ( err = Pa_IsStreamActive( stream ) ) == 1 ) {
printf("index = %d\n", data.frameIndex ); fflush(stdout);
Pa_Sleep(1000);
}
if( err < 0 ) goto done;
}
err = Pa_CloseStream( stream );
if( err != paNoError ) goto done;
fclose(data.file);
printf("Done.\n"); fflush(stdout);
}
done:
Pa_Terminate();
if( data.ringBufferData ) /* Sure it is NULL or valid. */
PaUtil_FreeMemory( data.ringBufferData );
if( err != paNoError )
{
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
err = 1; /* Always return 0 or 1, but no other return codes. */
}
return err;
}

133
lib-src/portaudio-v19/examples/paex_saw.c Normal file
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@@ -0,0 +1,133 @@
/** @file paex_saw.c
@ingroup examples_src
@brief Play a simple (aliasing) sawtooth wave.
@author Phil Burk http://www.softsynth.com
*/
/*
* $Id: paex_saw.c 1752 2011-09-08 03:21:55Z philburk $
*
* 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 NUM_SECONDS (4)
#define SAMPLE_RATE (44100)
typedef struct
{
float left_phase;
float right_phase;
}
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 )
{
/* Cast data passed through stream to our structure. */
paTestData *data = (paTestData*)userData;
float *out = (float*)outputBuffer;
unsigned int i;
(void) inputBuffer; /* Prevent unused variable warning. */
for( i=0; i<framesPerBuffer; i++ )
{
*out++ = data->left_phase; /* left */
*out++ = data->right_phase; /* right */
/* Generate simple sawtooth phaser that ranges between -1.0 and 1.0. */
data->left_phase += 0.01f;
/* When signal reaches top, drop back down. */
if( data->left_phase >= 1.0f ) data->left_phase -= 2.0f;
/* higher pitch so we can distinguish left and right. */
data->right_phase += 0.03f;
if( data->right_phase >= 1.0f ) data->right_phase -= 2.0f;
}
return 0;
}
/*******************************************************************/
static paTestData data;
int main(void);
int main(void)
{
PaStream *stream;
PaError err;
printf("PortAudio Test: output sawtooth wave.\n");
/* Initialize our data for use by callback. */
data.left_phase = data.right_phase = 0.0;
/* Initialize library before making any other calls. */
err = Pa_Initialize();
if( err != paNoError ) goto error;
/* Open an audio I/O stream. */
err = Pa_OpenDefaultStream( &stream,
0, /* no input channels */
2, /* stereo output */
paFloat32, /* 32 bit floating point output */
SAMPLE_RATE,
256, /* frames per buffer */
patestCallback,
&data );
if( err != paNoError ) goto error;
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
/* Sleep for several seconds. */
Pa_Sleep(NUM_SECONDS*1000);
err = Pa_StopStream( stream );
if( err != paNoError ) goto error;
err = Pa_CloseStream( stream );
if( err != paNoError ) goto error;
Pa_Terminate();
printf("Test finished.\n");
return err;
error:
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return err;
}

176
lib-src/portaudio-v19/examples/paex_sine.c Normal file
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@@ -0,0 +1,176 @@
/** @file paex_sine.c
@ingroup examples_src
@brief Play a sine wave for several seconds.
@author Ross Bencina <rossb@audiomulch.com>
@author Phil Burk <philburk@softsynth.com>
*/
/*
* $Id: paex_sine.c 1752 2011-09-08 03:21:55Z philburk $
*
* 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 NUM_SECONDS (5)
#define SAMPLE_RATE (44100)
#define FRAMES_PER_BUFFER (64)
#ifndef M_PI
#define M_PI (3.14159265)
#endif
#define TABLE_SIZE (200)
typedef struct
{
float sine[TABLE_SIZE];
int left_phase;
int right_phase;
char message[20];
}
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 )
{
paTestData *data = (paTestData*)userData;
float *out = (float*)outputBuffer;
unsigned long i;
(void) timeInfo; /* Prevent unused variable warnings. */
(void) statusFlags;
(void) inputBuffer;
for( i=0; i<framesPerBuffer; i++ )
{
*out++ = data->sine[data->left_phase]; /* left */
*out++ = data->sine[data->right_phase]; /* right */
data->left_phase += 1;
if( data->left_phase >= TABLE_SIZE ) data->left_phase -= TABLE_SIZE;
data->right_phase += 3; /* higher pitch so we can distinguish left and right. */
if( data->right_phase >= TABLE_SIZE ) data->right_phase -= TABLE_SIZE;
}
return paContinue;
}
/*
* This routine is called by portaudio when playback is done.
*/
static void StreamFinished( void* userData )
{
paTestData *data = (paTestData *) userData;
printf( "Stream Completed: %s\n", data->message );
}
/*******************************************************************/
int main(void);
int main(void)
{
PaStreamParameters outputParameters;
PaStream *stream;
PaError err;
paTestData data;
int i;
printf("PortAudio Test: output sine wave. SR = %d, BufSize = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER);
/* initialise sinusoidal wavetable */
for( i=0; i<TABLE_SIZE; i++ )
{
data.sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
}
data.left_phase = data.right_phase = 0;
err = Pa_Initialize();
if( err != paNoError ) goto error;
outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
if (outputParameters.device == paNoDevice) {
fprintf(stderr,"Error: No default output device.\n");
goto error;
}
outputParameters.channelCount = 2; /* stereo output */
outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
err = Pa_OpenStream(
&stream,
NULL, /* no input */
&outputParameters,
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't bother clipping them */
patestCallback,
&data );
if( err != paNoError ) goto error;
sprintf( data.message, "No Message" );
err = Pa_SetStreamFinishedCallback( stream, &StreamFinished );
if( err != paNoError ) goto error;
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Play for %d seconds.\n", NUM_SECONDS );
Pa_Sleep( NUM_SECONDS * 1000 );
err = Pa_StopStream( stream );
if( err != paNoError ) goto error;
err = Pa_CloseStream( stream );
if( err != paNoError ) goto error;
Pa_Terminate();
printf("Test finished.\n");
return err;
error:
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return err;
}

252
lib-src/portaudio-v19/examples/paex_sine_c++.cpp Normal file
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@@ -0,0 +1,252 @@
/** @file paex_sine.c
@ingroup examples_src
@brief Play a sine wave for several seconds.
@author Ross Bencina <rossb@audiomulch.com>
@author Phil Burk <philburk@softsynth.com>
*/
/*
* $Id: paex_sine.c 1752 2011-09-08 03:21:55Z philburk $
*
* 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 NUM_SECONDS (5)
#define SAMPLE_RATE (44100)
#define FRAMES_PER_BUFFER (64)
#ifndef M_PI
#define M_PI (3.14159265)
#endif
#define TABLE_SIZE (200)
class Sine
{
public:
Sine() : stream(0), left_phase(0), right_phase(0)
{
/* initialise sinusoidal wavetable */
for( int i=0; i<TABLE_SIZE; i++ )
{
sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
}
sprintf( message, "No Message" );
}
bool open(PaDeviceIndex index)
{
PaStreamParameters outputParameters;
outputParameters.device = index;
if (outputParameters.device == paNoDevice) {
return false;
}
outputParameters.channelCount = 2; /* stereo output */
outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
PaError err = Pa_OpenStream(
&stream,
NULL, /* no input */
&outputParameters,
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't bother clipping them */
&Sine::paCallback,
this /* Using 'this' for userData so we can cast to Sine* in paCallback method */
);
if (err != paNoError)
{
/* Failed to open stream to device !!! */
return false;
}
err = Pa_SetStreamFinishedCallback( stream, &Sine::paStreamFinished );
if (err != paNoError)
{
Pa_CloseStream( stream );
stream = 0;
return false;
}
return true;
}
bool close()
{
if (stream == 0)
return false;
PaError err = Pa_CloseStream( stream );
stream = 0;
return (err == paNoError);
}
bool start()
{
if (stream == 0)
return false;
PaError err = Pa_StartStream( stream );
return (err == paNoError);
}
bool stop()
{
if (stream == 0)
return false;
PaError err = Pa_StopStream( stream );
return (err == paNoError);
}
private:
/* The instance callback, where we have access to every method/variable in object of class Sine */
int paCallbackMethod(const void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags)
{
float *out = (float*)outputBuffer;
unsigned long i;
(void) timeInfo; /* Prevent unused variable warnings. */
(void) statusFlags;
(void) inputBuffer;
for( i=0; i<framesPerBuffer; i++ )
{
*out++ = sine[left_phase]; /* left */
*out++ = sine[right_phase]; /* right */
left_phase += 1;
if( left_phase >= TABLE_SIZE ) left_phase -= TABLE_SIZE;
right_phase += 3; /* higher pitch so we can distinguish left and right. */
if( right_phase >= TABLE_SIZE ) right_phase -= TABLE_SIZE;
}
return paContinue;
}
/* 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 paCallback( const void *inputBuffer, void *outputBuffer,
unsigned long framesPerBuffer,
const PaStreamCallbackTimeInfo* timeInfo,
PaStreamCallbackFlags statusFlags,
void *userData )
{
/* Here we cast userData to Sine* type so we can call the instance method paCallbackMethod, we can do that since
we called Pa_OpenStream with 'this' for userData */
return ((Sine*)userData)->paCallbackMethod(inputBuffer, outputBuffer,
framesPerBuffer,
timeInfo,
statusFlags);
}
void paStreamFinishedMethod()
{
printf( "Stream Completed: %s\n", message );
}
/*
* This routine is called by portaudio when playback is done.
*/
static void paStreamFinished(void* userData)
{
return ((Sine*)userData)->paStreamFinishedMethod();
}
PaStream *stream;
float sine[TABLE_SIZE];
int left_phase;
int right_phase;
char message[20];
};
/*******************************************************************/
int main(void);
int main(void)
{
PaError err;
Sine sine;
printf("PortAudio Test: output sine wave. SR = %d, BufSize = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER);
err = Pa_Initialize();
if( err != paNoError ) goto error;
if (sine.open(Pa_GetDefaultOutputDevice()))
{
if (sine.start())
{
printf("Play for %d seconds.\n", NUM_SECONDS );
Pa_Sleep( NUM_SECONDS * 1000 );
sine.stop();
}
sine.close();
}
Pa_Terminate();
printf("Test finished.\n");
return err;
error:
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return err;
}

222
lib-src/portaudio-v19/examples/paex_wmme_ac3.c Normal file
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@@ -0,0 +1,222 @@
/** @file paex_wmme_ac3.c
@ingroup examples_src
@brief Use WMME-specific interface to send raw AC3 data to a S/PDIF output.
@author Ross Bencina <rossb@audiomulch.com>
*/
/*
* $Id: $
* Portable Audio I/O Library
* Windows MME ac3 sound output test
*
* Copyright (c) 2009 Ross Bencina
*
* 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 <windows.h> /* required when using pa_win_wmme.h */
#include <mmsystem.h> /* required when using pa_win_wmme.h */
#include "portaudio.h"
#include "pa_win_wmme.h"
#define NUM_SECONDS (20)
#define SAMPLE_RATE (48000)
#define FRAMES_PER_BUFFER (64)
#ifndef M_PI
#define M_PI (3.14159265)
#endif
#define TABLE_SIZE (100)
#define CHANNEL_COUNT (2)
typedef struct
{
short *buffer;
int bufferSampleCount;
int playbackIndex;
}
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 )
{
paTestData *data = (paTestData*)userData;
short *out = (short*)outputBuffer;
unsigned long i,j;
(void) timeInfo; /* Prevent unused variable warnings. */
(void) statusFlags;
(void) inputBuffer;
/* stream out contents of data->buffer looping at end */
for( i=0; i<framesPerBuffer; i++ )
{
for( j = 0; j < CHANNEL_COUNT; ++j ){
*out++ = data->buffer[ data->playbackIndex++ ];
if( data->playbackIndex >= data->bufferSampleCount )
data->playbackIndex = 0; /* loop at end of buffer */
}
}
return paContinue;
}
/*******************************************************************/
int main(int argc, char* argv[])
{
PaStreamParameters outputParameters;
PaWinMmeStreamInfo wmmeStreamInfo;
PaStream *stream;
PaError err;
paTestData data;
int i;
int deviceIndex;
FILE *fp;
const char *fileName = "c:\\test_48k.ac3.spdif";
data.buffer = NULL;
printf("usage: patest_wmme_ac3 fileName [paDeviceIndex]\n");
printf("**IMPORTANT*** The provided file must include the spdif preamble at the start of every AC-3 frame. Using a normal ac3 file won't work.\n");
printf("PortAudio Test: output a raw spdif ac3 stream. SR = %d, BufSize = %d, Chans = %d\n",
SAMPLE_RATE, FRAMES_PER_BUFFER, CHANNEL_COUNT);
if( argc >= 2 )
fileName = argv[1];
printf( "reading spdif ac3 raw stream file %s\n", fileName );
fp = fopen( fileName, "rb" );
if( !fp ){
fprintf( stderr, "error opening spdif ac3 file.\n" );
return -1;
}
/* get file size */
fseek( fp, 0, SEEK_END );
data.bufferSampleCount = ftell( fp ) / sizeof(short);
fseek( fp, 0, SEEK_SET );
/* allocate buffer, read the whole file into memory */
data.buffer = (short*)malloc( data.bufferSampleCount * sizeof(short) );
if( !data.buffer ){
fprintf( stderr, "error allocating buffer.\n" );
return -1;
}
fread( data.buffer, sizeof(short), data.bufferSampleCount, fp );
fclose( fp );
data.playbackIndex = 0;
err = Pa_Initialize();
if( err != paNoError ) goto error;
deviceIndex = Pa_GetHostApiInfo( Pa_HostApiTypeIdToHostApiIndex( paMME ) )->defaultOutputDevice;
if( argc >= 3 ){
sscanf( argv[1], "%d", &deviceIndex );
}
printf( "using device id %d (%s)\n", deviceIndex, Pa_GetDeviceInfo(deviceIndex)->name );
outputParameters.device = deviceIndex;
outputParameters.channelCount = CHANNEL_COUNT;
outputParameters.sampleFormat = paInt16; /* IMPORTANT must use paInt16 for WMME AC3 */
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
wmmeStreamInfo.size = sizeof(PaWinMmeStreamInfo);
wmmeStreamInfo.hostApiType = paMME;
wmmeStreamInfo.version = 1;
wmmeStreamInfo.flags = paWinMmeWaveFormatDolbyAc3Spdif;
outputParameters.hostApiSpecificStreamInfo = &wmmeStreamInfo;
if( Pa_IsFormatSupported( 0, &outputParameters, SAMPLE_RATE ) == paFormatIsSupported ){
printf( "Pa_IsFormatSupported reports device will support %d channels.\n", CHANNEL_COUNT );
}else{
printf( "Pa_IsFormatSupported reports device will not support %d channels.\n", CHANNEL_COUNT );
}
err = Pa_OpenStream(
&stream,
NULL, /* no input */
&outputParameters,
SAMPLE_RATE,
FRAMES_PER_BUFFER,
0,
patestCallback,
&data );
if( err != paNoError ) goto error;
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Play for %d seconds.\n", NUM_SECONDS );
Pa_Sleep( NUM_SECONDS * 1000 );
err = Pa_StopStream( stream );
if( err != paNoError ) goto error;
err = Pa_CloseStream( stream );
if( err != paNoError ) goto error;
Pa_Terminate();
free( data.buffer );
printf("Test finished.\n");
return err;
error:
Pa_Terminate();
free( data.buffer );
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return err;
}

211
lib-src/portaudio-v19/examples/paex_wmme_surround.c Normal file
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@@ -0,0 +1,211 @@
/** @file paex_wmme_surround.c
@ingroup examples_src
@brief Use WMME-specific channelMask to request 5.1 surround sound output.
@author Ross Bencina <rossb@audiomulch.com>
*/
/*
* $Id: $
* Portable Audio I/O Library
* Windows MME surround sound output test
*
* Copyright (c) 2007 Ross Bencina
*
* 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 <windows.h> /* required when using pa_win_wmme.h */
#include <mmsystem.h> /* required when using pa_win_wmme.h */
#include "portaudio.h"
#include "pa_win_wmme.h"
#define NUM_SECONDS (12)
#define SAMPLE_RATE (44100)
#define FRAMES_PER_BUFFER (64)
#ifndef M_PI
#define M_PI (3.14159265)
#endif
#define TABLE_SIZE (100)
#define CHANNEL_COUNT (6)
typedef struct
{
float sine[TABLE_SIZE];
int phase;
int currentChannel;
int cycleCount;
}
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 )
{
paTestData *data = (paTestData*)userData;
float *out = (float*)outputBuffer;
unsigned long i,j;
(void) timeInfo; /* Prevent unused variable warnings. */
(void) statusFlags;
(void) inputBuffer;
for( i=0; i<framesPerBuffer; i++ )
{
for( j = 0; j < CHANNEL_COUNT; ++j ){
if( j == data->currentChannel && data->cycleCount < 4410 ){
*out++ = data->sine[data->phase];
data->phase += 1 + j; // play each channel at a different pitch so they can be distinguished
if( data->phase >= TABLE_SIZE ){
data->phase -= TABLE_SIZE;
}
}else{
*out++ = 0;
}
}
data->cycleCount++;
if( data->cycleCount > 44100 ){
data->cycleCount = 0;
++data->currentChannel;
if( data->currentChannel >= CHANNEL_COUNT )
data->currentChannel -= CHANNEL_COUNT;
}
}
return paContinue;
}
/*******************************************************************/
int main(int argc, char* argv[])
{
PaStreamParameters outputParameters;
PaWinMmeStreamInfo wmmeStreamInfo;
PaStream *stream;
PaError err;
paTestData data;
int i;
int deviceIndex;
printf("PortAudio Test: output a sine blip on each channel. SR = %d, BufSize = %d, Chans = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER, CHANNEL_COUNT);
err = Pa_Initialize();
if( err != paNoError ) goto error;
deviceIndex = Pa_GetHostApiInfo( Pa_HostApiTypeIdToHostApiIndex( paMME ) )->defaultOutputDevice;
if( argc == 2 ){
sscanf( argv[1], "%d", &deviceIndex );
}
printf( "using device id %d (%s)\n", deviceIndex, Pa_GetDeviceInfo(deviceIndex)->name );
/* initialise sinusoidal wavetable */
for( i=0; i<TABLE_SIZE; i++ )
{
data.sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
}
data.phase = 0;
data.currentChannel = 0;
data.cycleCount = 0;
outputParameters.device = deviceIndex;
outputParameters.channelCount = CHANNEL_COUNT;
outputParameters.sampleFormat = paFloat32; /* 32 bit floating point processing */
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
/* it's not strictly necessary to provide a channelMask for surround sound
output. But if you want to be sure which channel mask PortAudio will use
then you should supply one */
wmmeStreamInfo.size = sizeof(PaWinMmeStreamInfo);
wmmeStreamInfo.hostApiType = paMME;
wmmeStreamInfo.version = 1;
wmmeStreamInfo.flags = paWinMmeUseChannelMask;
wmmeStreamInfo.channelMask = PAWIN_SPEAKER_5POINT1; /* request 5.1 output format */
outputParameters.hostApiSpecificStreamInfo = &wmmeStreamInfo;
if( Pa_IsFormatSupported( 0, &outputParameters, SAMPLE_RATE ) == paFormatIsSupported ){
printf( "Pa_IsFormatSupported reports device will support %d channels.\n", CHANNEL_COUNT );
}else{
printf( "Pa_IsFormatSupported reports device will not support %d channels.\n", CHANNEL_COUNT );
}
err = Pa_OpenStream(
&stream,
NULL, /* no input */
&outputParameters,
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't bother clipping them */
patestCallback,
&data );
if( err != paNoError ) goto error;
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Play for %d seconds.\n", NUM_SECONDS );
Pa_Sleep( NUM_SECONDS * 1000 );
err = Pa_StopStream( stream );
if( err != paNoError ) goto error;
err = Pa_CloseStream( stream );
if( err != paNoError ) goto error;
Pa_Terminate();
printf("Test finished.\n");
return err;
error:
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return err;
}

166
lib-src/portaudio-v19/examples/paex_write_sine.c Normal file
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/** @file paex_write_sine.c
@ingroup examples_src
@brief Play a sine wave for several seconds using the blocking API (Pa_WriteStream())
@author Ross Bencina <rossb@audiomulch.com>
@author Phil Burk <philburk@softsynth.com>
*/
/*
* $Id: paex_write_sine.c 1865 2012-09-01 21:16:25Z philburk $
*
* 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 NUM_SECONDS (5)
#define SAMPLE_RATE (44100)
#define FRAMES_PER_BUFFER (1024)
#ifndef M_PI
#define M_PI (3.14159265)
#endif
#define TABLE_SIZE (200)
int main(void);
int main(void)
{
PaStreamParameters outputParameters;
PaStream *stream;
PaError err;
float buffer[FRAMES_PER_BUFFER][2]; /* stereo output buffer */
float sine[TABLE_SIZE]; /* sine wavetable */
int left_phase = 0;
int right_phase = 0;
int left_inc = 1;
int right_inc = 3; /* higher pitch so we can distinguish left and right. */
int i, j, k;
int bufferCount;
printf("PortAudio Test: output sine wave. SR = %d, BufSize = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER);
/* initialise sinusoidal wavetable */
for( i=0; i<TABLE_SIZE; i++ )
{
sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
}
err = Pa_Initialize();
if( err != paNoError ) goto error;
outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
if (outputParameters.device == paNoDevice) {
fprintf(stderr,"Error: No default output device.\n");
goto error;
}
outputParameters.channelCount = 2; /* stereo output */
outputParameters.sampleFormat = paFloat32; /* 32 bit floating point output */
outputParameters.suggestedLatency = 0.050; // Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
err = Pa_OpenStream(
&stream,
NULL, /* no input */
&outputParameters,
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't bother clipping them */
NULL, /* no callback, use blocking API */
NULL ); /* no callback, so no callback userData */
if( err != paNoError ) goto error;
printf( "Play 3 times, higher each time.\n" );
for( k=0; k < 3; ++k )
{
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Play for %d seconds.\n", NUM_SECONDS );
bufferCount = ((NUM_SECONDS * SAMPLE_RATE) / FRAMES_PER_BUFFER);
for( i=0; i < bufferCount; i++ )
{
for( j=0; j < FRAMES_PER_BUFFER; j++ )
{
buffer[j][0] = sine[left_phase]; /* left */
buffer[j][1] = sine[right_phase]; /* right */
left_phase += left_inc;
if( left_phase >= TABLE_SIZE ) left_phase -= TABLE_SIZE;
right_phase += right_inc;
if( right_phase >= TABLE_SIZE ) right_phase -= TABLE_SIZE;
}
err = Pa_WriteStream( stream, buffer, FRAMES_PER_BUFFER );
if( err != paNoError ) goto error;
}
err = Pa_StopStream( stream );
if( err != paNoError ) goto error;
++left_inc;
++right_inc;
Pa_Sleep( 1000 );
}
err = Pa_CloseStream( stream );
if( err != paNoError ) goto error;
Pa_Terminate();
printf("Test finished.\n");
return err;
error:
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
// Print more information about the error.
if( err == paUnanticipatedHostError )
{
const PaHostErrorInfo *hostErrorInfo = Pa_GetLastHostErrorInfo();
fprintf( stderr, "Host API error = #%ld, hostApiType = %d\n", hostErrorInfo->errorCode, hostErrorInfo->hostApiType );
fprintf( stderr, "Host API error = %s\n", hostErrorInfo->errorText );
}
Pa_Terminate();
return err;
}

167
lib-src/portaudio-v19/examples/paex_write_sine_nonint.c Normal file
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@@ -0,0 +1,167 @@
/** @file paex_write_sine_nonint.c
@ingroup examples_src
@brief Play a non-interleaved sine wave using the blocking API (Pa_WriteStream())
@author Ross Bencina <rossb@audiomulch.com>
@author Phil Burk <philburk@softsynth.com>
*/
/*
* $Id: patest_write_sine.c 1368 2008-03-01 00:38:27Z rossb $
*
* 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 NUM_SECONDS (5)
#define SAMPLE_RATE (44100)
#define FRAMES_PER_BUFFER (1024)
#ifndef M_PI
#define M_PI (3.14159265)
#endif
#define TABLE_SIZE (200)
int main(void);
int main(void)
{
PaStreamParameters outputParameters;
PaStream *stream;
PaError err;
float leftBuffer[FRAMES_PER_BUFFER];
float rightBuffer[FRAMES_PER_BUFFER];
void *buffers[2]; /* points to both non-interleaved buffers. */
float sine[TABLE_SIZE]; /* sine wavetable */
int left_phase = 0;
int right_phase = 0;
int left_inc = 1;
int right_inc = 3; /* higher pitch so we can distinguish left and right. */
int i, j, k;
int bufferCount;
printf("PortAudio Test: output sine wave NON-INTERLEAVED. SR = %d, BufSize = %d\n", SAMPLE_RATE, FRAMES_PER_BUFFER);
/* initialise sinusoidal wavetable */
for( i=0; i<TABLE_SIZE; i++ )
{
sine[i] = (float) sin( ((double)i/(double)TABLE_SIZE) * M_PI * 2. );
}
err = Pa_Initialize();
if( err != paNoError ) goto error;
outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */
if (outputParameters.device == paNoDevice) {
fprintf(stderr,"Error: No default output device.\n");
goto error;
}
outputParameters.channelCount = 2; /* stereo output */
outputParameters.sampleFormat = paFloat32 | paNonInterleaved; /* 32 bit floating point output NON-INTERLEAVED */
outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultLowOutputLatency;
outputParameters.hostApiSpecificStreamInfo = NULL;
err = Pa_OpenStream(
&stream,
NULL, /* no input */
&outputParameters,
SAMPLE_RATE,
FRAMES_PER_BUFFER,
paClipOff, /* we won't output out of range samples so don't bother clipping them */
NULL, /* no callback, use blocking API */
NULL ); /* no callback, so no callback userData */
if( err != paNoError ) goto error;
printf( "Play 3 times, higher each time.\n" );
/* Set up array of buffer pointers for Pa_WriteStream */
buffers[0] = leftBuffer;
buffers[1] = rightBuffer;
for( k=0; k < 3; ++k )
{
err = Pa_StartStream( stream );
if( err != paNoError ) goto error;
printf("Play for %d seconds.\n", NUM_SECONDS );
bufferCount = ((NUM_SECONDS * SAMPLE_RATE) / FRAMES_PER_BUFFER);
for( i=0; i < bufferCount; i++ )
{
for( j=0; j < FRAMES_PER_BUFFER; j++ )
{
leftBuffer[j] = sine[left_phase]; /* left */
rightBuffer[j] = sine[right_phase]; /* right */
left_phase += left_inc;
if( left_phase >= TABLE_SIZE ) left_phase -= TABLE_SIZE;
right_phase += right_inc;
if( right_phase >= TABLE_SIZE ) right_phase -= TABLE_SIZE;
}
err = Pa_WriteStream( stream, buffers, FRAMES_PER_BUFFER );
if( err != paNoError ) goto error;
}
err = Pa_StopStream( stream );
if( err != paNoError ) goto error;
++left_inc;
++right_inc;
Pa_Sleep( 1000 );
}
err = Pa_CloseStream( stream );
if( err != paNoError ) goto error;
Pa_Terminate();
printf("Test finished.\n");
return err;
error:
Pa_Terminate();
fprintf( stderr, "An error occured while using the portaudio stream\n" );
fprintf( stderr, "Error number: %d\n", err );
fprintf( stderr, "Error message: %s\n", Pa_GetErrorText( err ) );
return err;
}