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Diffstat (limited to 'pd/src/s_audio_pablio.c')
| -rw-r--r-- | pd/src/s_audio_pablio.c | 350 |
1 files changed, 0 insertions, 350 deletions
diff --git a/pd/src/s_audio_pablio.c b/pd/src/s_audio_pablio.c deleted file mode 100644 index 0873f269..00000000 --- a/pd/src/s_audio_pablio.c +++ /dev/null @@ -1,350 +0,0 @@ -/* - - * pablio.c - * Portable Audio Blocking Input/Output utility. - * - * Author: Phil Burk, http://www.softsynth.com - * - * This program uses the PortAudio Portable Audio Library. - * For more information see: http://www.audiomulch.com/portaudio/ - * 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. - * - * 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. - * - * 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. - * - */ - - /* changes by Miller Puckette to support Pd: device selection, - settable audio buffer size, and settable number of channels. - LATER also fix it to poll for input and output fifo fill points. */ -#include <stdio.h> -#include <stdlib.h> -#include <math.h> -#include "portaudio.h" -#include "s_audio_paring.h" -#include "s_audio_pablio.h" /* MSP */ -#include <string.h> - - /* MSP -- FRAMES_PER_BUFFER constant removed */ -static void NPa_Sleep(int n) /* MSP wrapper to check we never stall... */ -{ -#if 0 - fprintf(stderr, "sleep\n"); -#endif - Pa_Sleep(n); -} - -/************************************************************************/ -/******** Prototypes ****************************************************/ -/************************************************************************/ - -static int blockingIOCallback( const void *inputBuffer, void *outputBuffer, /*MSP */ - unsigned long framesPerBuffer, - const PaStreamCallbackTimeInfo *outTime, - PaStreamCallbackFlags myflags, - void *userData ); -static PaError PABLIO_InitFIFO( sys_ringbuf *rbuf, long numFrames, long bytesPerFrame ); -static PaError PABLIO_TermFIFO( sys_ringbuf *rbuf ); - -/************************************************************************/ -/******** Functions *****************************************************/ -/************************************************************************/ - -/* Called from PortAudio. - * Read and write data only if there is room in FIFOs. - */ -static int blockingIOCallback( const void *inputBuffer, void *outputBuffer, /* MSP */ - unsigned long framesPerBuffer, - const PaStreamCallbackTimeInfo *outTime, - PaStreamCallbackFlags myflags, - void *userData ) -{ - PABLIO_Stream *data = (PABLIO_Stream*)userData; - (void) outTime; - - /* This may get called with NULL inputBuffer during initial setup. */ - if( inputBuffer != NULL ) - { - sys_ringbuf_Write( &data->inFIFO, inputBuffer, - data->inbytesPerFrame * framesPerBuffer ); - } - if( outputBuffer != NULL ) - { - int i; - int numBytes = data->outbytesPerFrame * framesPerBuffer; - int numRead = sys_ringbuf_Read( &data->outFIFO, outputBuffer, - numBytes); - /* Zero out remainder of buffer if we run out of data. */ - for( i=numRead; i<numBytes; i++ ) - { - ((char *)outputBuffer)[i] = 0; - } - } - - return 0; -} - -/* Allocate buffer. */ -static PaError PABLIO_InitFIFO( sys_ringbuf *rbuf, long numFrames, long bytesPerFrame ) -{ - long numBytes = numFrames * bytesPerFrame; - char *buffer = (char *) malloc( numBytes ); - if( buffer == NULL ) return paInsufficientMemory; - memset( buffer, 0, numBytes ); - return (PaError) sys_ringbuf_Init( rbuf, numBytes, buffer ); -} - -/* Free buffer. */ -static PaError PABLIO_TermFIFO( sys_ringbuf *rbuf ) -{ - if( rbuf->buffer ) free( rbuf->buffer ); - rbuf->buffer = NULL; - return paNoError; -} - -/************************************************************ - * Write data to ring buffer. - * Will not return until all the data has been written. - */ -long WriteAudioStream( PABLIO_Stream *aStream, void *data, long numFrames ) -{ - long bytesWritten; - char *p = (char *) data; - long numBytes = aStream->outbytesPerFrame * numFrames; - while( numBytes > 0) - { - bytesWritten = sys_ringbuf_Write( &aStream->outFIFO, p, numBytes ); - numBytes -= bytesWritten; - p += bytesWritten; - if( numBytes > 0) NPa_Sleep(10); /* MSP */ - } - return numFrames; -} - -/************************************************************ - * Read data from ring buffer. - * Will not return until all the data has been read. - */ -long ReadAudioStream( PABLIO_Stream *aStream, void *data, long numFrames ) -{ - long bytesRead; - char *p = (char *) data; - long numBytes = aStream->inbytesPerFrame * numFrames; - while( numBytes > 0) - { - bytesRead = sys_ringbuf_Read( &aStream->inFIFO, p, numBytes ); - numBytes -= bytesRead; - p += bytesRead; - if( numBytes > 0) NPa_Sleep(10); /* MSP */ - } - return numFrames; -} - -/************************************************************ - * Return the number of frames that could be written to the stream without - * having to wait. - */ -long GetAudioStreamWriteable( PABLIO_Stream *aStream ) -{ - int bytesEmpty = sys_ringbuf_GetWriteAvailable( &aStream->outFIFO ); - return bytesEmpty / aStream->outbytesPerFrame; -} - -/************************************************************ - * Return the number of frames that are available to be read from the - * stream without having to wait. - */ -long GetAudioStreamReadable( PABLIO_Stream *aStream ) -{ - int bytesFull = sys_ringbuf_GetReadAvailable( &aStream->inFIFO ); - return bytesFull / aStream->inbytesPerFrame; -} - -/************************************************************/ -static unsigned long RoundUpToNextPowerOf2( unsigned long n ) -{ - long numBits = 0; - if( ((n-1) & n) == 0) return n; /* Already Power of two. */ - while( n > 0 ) - { - n= n>>1; - numBits++; - } - return (1<<numBits); -} - -/************************************************************ - * Opens a PortAudio stream with default characteristics. - * Allocates PABLIO_Stream structure. - * - * flags parameter can be an ORed combination of: - * PABLIO_READ, PABLIO_WRITE, or PABLIO_READ_WRITE - */ -PaError OpenAudioStream( PABLIO_Stream **rwblPtr, double sampleRate, - PaSampleFormat format, int inchannels, - int outchannels, int framesperbuf, int nbuffers, - int indeviceno, int outdeviceno) /* MSP */ -{ - long bytesPerSample; - long doRead = 0; - long doWrite = 0; - PaError err; - PABLIO_Stream *aStream; - long numFrames; - PaStreamParameters instreamparams, outstreamparams; /* MSP */ - - /* fprintf(stderr, - "open %lf fmt %d flags %d ch: %d fperbuf: %d nbuf: %d devs: %d %d\n", - sampleRate, format, flags, nchannels, - framesperbuf, nbuffers, indeviceno, outdeviceno); */ - - if (indeviceno < 0) /* MSP... */ - { - indeviceno = Pa_GetDefaultInputDevice(); - fprintf(stderr, "using default input device number: %d\n", indeviceno); - } - if (outdeviceno < 0) - { - outdeviceno = Pa_GetDefaultOutputDevice(); - fprintf(stderr, "using default output device number: %d\n", outdeviceno); - } - /* fprintf(stderr, "nchan %d, flags %d, bufs %d, framesperbuf %d\n", - nchannels, flags, nbuffers, framesperbuf); */ - /* ...MSP */ - - /* Allocate PABLIO_Stream structure for caller. */ - aStream = (PABLIO_Stream *) malloc( sizeof(PABLIO_Stream) ); - if( aStream == NULL ) return paInsufficientMemory; - memset( aStream, 0, sizeof(PABLIO_Stream) ); - - /* Determine size of a sample. */ - bytesPerSample = Pa_GetSampleSize( format ); - if( bytesPerSample < 0 ) - { - err = (PaError) bytesPerSample; - goto error; - } - aStream->insamplesPerFrame = inchannels; /* MSP */ - aStream->inbytesPerFrame = bytesPerSample * aStream->insamplesPerFrame; - aStream->outsamplesPerFrame = outchannels; - aStream->outbytesPerFrame = bytesPerSample * aStream->outsamplesPerFrame; - - /* Initialize PortAudio */ - err = Pa_Initialize(); - if( err != paNoError ) goto error; - - numFrames = nbuffers * framesperbuf; /* ...MSP */ - - instreamparams.device = indeviceno; /* MSP... */ - instreamparams.channelCount = inchannels; - instreamparams.sampleFormat = format; - instreamparams.suggestedLatency = nbuffers*framesperbuf/sampleRate; - instreamparams.hostApiSpecificStreamInfo = 0; - - outstreamparams.device = outdeviceno; - outstreamparams.channelCount = outchannels; - outstreamparams.sampleFormat = format; - outstreamparams.suggestedLatency = nbuffers*framesperbuf/sampleRate; - outstreamparams.hostApiSpecificStreamInfo = 0; /* ... MSP */ - - numFrames = nbuffers * framesperbuf; - /* fprintf(stderr, "numFrames %d\n", numFrames); */ - /* Initialize Ring Buffers */ - doRead = (inchannels != 0); - doWrite = (outchannels != 0); - if(doRead) - { - err = PABLIO_InitFIFO( &aStream->inFIFO, numFrames, - aStream->inbytesPerFrame ); - if( err != paNoError ) goto error; - } - if(doWrite) - { - long numBytes; - err = PABLIO_InitFIFO( &aStream->outFIFO, numFrames, - aStream->outbytesPerFrame ); - if( err != paNoError ) goto error; - /* Make Write FIFO appear full initially. */ - numBytes = sys_ringbuf_GetWriteAvailable( &aStream->outFIFO ); - sys_ringbuf_AdvanceWriteIndex( &aStream->outFIFO, numBytes ); - } - - /* Open a PortAudio stream that we will use to communicate with the underlying - * audio drivers. */ - err = Pa_OpenStream( - &aStream->stream, - (doRead ? &instreamparams : 0), /* MSP */ - (doWrite ? &outstreamparams : 0), /* MSP */ - sampleRate, - framesperbuf, /* MSP */ - paNoFlag, /* MSP -- portaudio will clip for us */ - blockingIOCallback, - aStream ); - if( err != paNoError ) goto error; - - err = Pa_StartStream( aStream->stream ); - if( err != paNoError ) /* MSP */ - { - fprintf(stderr, "Pa_StartStream failed; closing audio stream...\n"); - CloseAudioStream( aStream ); - goto error; - } - - *rwblPtr = aStream; - return paNoError; - -error: - *rwblPtr = NULL; - return err; -} - -/************************************************************/ -PaError CloseAudioStream( PABLIO_Stream *aStream ) -{ - PaError err; - int bytesEmpty; - int byteSize = aStream->outFIFO.bufferSize; - - /* If we are writing data, make sure we play everything written. */ - if( byteSize > 0 ) - { - bytesEmpty = sys_ringbuf_GetWriteAvailable( &aStream->outFIFO ); - while( bytesEmpty < byteSize ) - { - NPa_Sleep( 10 ); /* MSP */ - bytesEmpty = sys_ringbuf_GetWriteAvailable( &aStream->outFIFO ); - } - } - - err = Pa_StopStream( aStream->stream ); - if( err != paNoError ) goto error; - err = Pa_CloseStream( aStream->stream ); - if( err != paNoError ) goto error; - Pa_Terminate(); - -error: - PABLIO_TermFIFO( &aStream->inFIFO ); - PABLIO_TermFIFO( &aStream->outFIFO ); - free( aStream ); - return err; -} |