diff options
Diffstat (limited to 'portaudio/test/debug_convert.c')
-rw-r--r-- | portaudio/test/debug_convert.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/portaudio/test/debug_convert.c b/portaudio/test/debug_convert.c new file mode 100644 index 0000000..7ae3889 --- /dev/null +++ b/portaudio/test/debug_convert.c @@ -0,0 +1,138 @@ +/* + * $Id: debug_convert.c 1083 2006-08-23 07:30:49Z rossb $ + * Convert tagged values. + * + * Author: 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" +#define OUTPUT_DEVICE (Pa_GetDefaultOutputDeviceID()) +//#define OUTPUT_DEVICE (11) +#define NUM_SECONDS (8) +#define SLEEP_DUR (800) +#define SAMPLE_RATE (44100) +#define FRAMES_PER_BUFFER (256) + +#define NUM_BUFFERS (0) + +typedef struct +{ + unsigned int framesToGo; +} +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( void *inputBuffer, void *outputBuffer, + unsigned long framesPerBuffer, + PaTimestamp outTime, void *userData ) +{ + paTestData *data = (paTestData*)userData; + short *out = (short*)outputBuffer; + int i; + int finished = 0; + (void) outTime; /* Prevent unused variable warnings. */ + (void) inputBuffer; + + if( data->framesToGo < framesPerBuffer ) finished = 1; + + for( i=0; i<framesPerBuffer; i++ ) + { + *out++ = 0x0000 + i; /* left */ + *out++ = 0x1000 + i; /* right */ + } + return finished; +} +/*******************************************************************/ +int main(void); +int main(void) +{ + PortAudioStream *stream; + PaError err; + paTestData data; + int i; + int totalSamps; + printf("PortAudio Test: output debug values\n" ); + data.framesToGo = totalSamps = NUM_SECONDS * SAMPLE_RATE; /* Play for a few seconds. */ + printf("totalSamps = %d\n", totalSamps ); + err = Pa_Initialize(); + if( err != paNoError ) goto error; + printf("PortAudio Test: output device = %d\n", OUTPUT_DEVICE ); + + err = Pa_OpenStream( + &stream, + paNoDevice, + 0, /* no input */ + paFloat32, /* 32 bit floating point input */ + NULL, + OUTPUT_DEVICE, + 2, /* stereo output */ + paInt16, /* 32 bit floating point output */ + NULL, + SAMPLE_RATE, + FRAMES_PER_BUFFER, + NUM_BUFFERS, /* number of buffers, if zero then use default minimum */ + paClipOff|paDitherOff, /* 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("Is callback being called?\n"); + for( i=0; i<((NUM_SECONDS+1)*1000); i+=SLEEP_DUR ) + { + printf("data.framesToGo = %d\n", data.framesToGo ); fflush(stdout); + Pa_Sleep( SLEEP_DUR ); + } + /* Stop sound until ENTER hit. */ + printf("Call Pa_StopStream()\n"); + err = Pa_StopStream( 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; +} |