reorganized

svn path=/trunk/; revision=9400

1 files changed, 304 insertions, 0 deletions

diff --git a/desiredata/src/s_audio_pablio.c b/desiredata/src/s_audio_pablio.c
new file mode 100644
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--- /dev/null
+++ b/desiredata/src/s_audio_pablio.c
@@ -0,0 +1,304 @@
+/*
+ * $Id: s_audio_pablio.c,v 1.1.4.2.2.4.2.2 2007-07-30 22:19:11 matju Exp $
+ * 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
+    post("sleep");
+#endif
+    Pa_Sleep(n);
+}
+
+/************************************************************************/
+/******** Prototypes ****************************************************/
+/************************************************************************/
+
+#ifdef PA19
+static int blockingIOCallback( const void *inputBuffer, void *outputBuffer, /*MSP */
+                               unsigned long framesPerBuffer,
+                               const PaStreamCallbackTimeInfo *outTime, 
+                               PaStreamCallbackFlags myflags, 
+                               void *userData );
+#else
+static int blockingIOCallback( void *inputBuffer, void *outputBuffer,
+                               unsigned long framesPerBuffer,
+                               PaTimestamp outTime, void *userData );
+#endif
+static PaError PABLIO_InitFIFO( RingBuffer *rbuf, long numFrames, long bytesPerFrame );
+static PaError PABLIO_TermFIFO( RingBuffer *rbuf );
+
+/************************************************************************/
+/******** Functions *****************************************************/
+/************************************************************************/
+
+/* Called from PortAudio.
+ * Read and write data only if there is room in FIFOs.
+ */
+#ifdef PA19
+static int blockingIOCallback(const void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer,
+const PaStreamCallbackTimeInfo *outTime, PaStreamCallbackFlags myflags, void *userData)
+#else
+static int blockingIOCallback(void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer,
+PaTimestamp outTime, void *userData )
+#endif
+{
+    PABLIO_Stream *data = (PABLIO_Stream*)userData;
+//    (void) outTime;
+    /* This may get called with NULL inputBuffer during initial setup. */
+    if (inputBuffer) PD_RingBuffer_Write( &data->inFIFO, inputBuffer, data->inbytesPerFrame * framesPerBuffer );
+    if (outputBuffer) {
+	int numBytes = data->outbytesPerFrame * framesPerBuffer;
+        int numRead = PD_RingBuffer_Read( &data->outFIFO, outputBuffer, numBytes);
+        /* Zero out remainder of buffer if we run out of data. */
+        for (int i=numRead; i<numBytes; i++) ((char *)outputBuffer)[i] = 0;
+    }
+    return 0;
+}
+
+/* Allocate buffer. */
+static PaError PABLIO_InitFIFO(RingBuffer *rbuf, long numFrames, long bytesPerFrame) {
+    long numBytes = numFrames * bytesPerFrame;
+    char *buffer = (char *)malloc(numBytes);
+    if (!buffer) return paInsufficientMemory;
+    memset(buffer, 0, numBytes);
+    return (PaError) PD_RingBuffer_Init(rbuf, numBytes, buffer);
+}
+
+/* Free buffer. */
+static PaError PABLIO_TermFIFO(RingBuffer *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 PD_WriteAudioStream(PABLIO_Stream *aStream, void *data, long numFrames) {
+    long bytesWritten;
+    char *p = (char *) data;
+    long numBytes = aStream->outbytesPerFrame * numFrames;
+    while (numBytes > 0) {
+        bytesWritten = PD_RingBuffer_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 PD_ReadAudioStream(PABLIO_Stream *aStream, void *data, long numFrames) {
+    char *p = (char *)data;
+    long numBytes = aStream->inbytesPerFrame * numFrames;
+    while (numBytes > 0) {
+        long bytesRead = PD_RingBuffer_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 PD_GetAudioStreamWriteable(PABLIO_Stream *aStream) {
+    int bytesEmpty = PD_RingBuffer_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 PD_GetAudioStreamReadable(PABLIO_Stream *aStream) {
+    int bytesFull = PD_RingBuffer_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 PD_OpenAudioStream(PABLIO_Stream **rwblPtr, double sampleRate, PaSampleFormat format, int inchannels,
+int outchannels, int framesperbuf, int nbuffers, int indeviceno, int outdeviceno) {
+    long   bytesPerSample;
+    long   doRead = 0;
+    long   doWrite = 0;
+    PaError err;
+    PABLIO_Stream *aStream;
+    long   minNumBuffers;
+    long   numFrames;
+#ifdef PA19
+    PaStreamParameters instreamparams, outstreamparams;  /* MSP */
+#endif
+    /* post("open %lf fmt %d flags %d ch: %d fperbuf: %d nbuf: %d devs: %d %d",
+           sampleRate, format, flags, nchannels, framesperbuf, nbuffers, indeviceno, outdeviceno); */
+    if (indeviceno < 0) {
+#ifdef PA19
+        indeviceno = Pa_GetDefaultInputDevice();
+#else
+        indeviceno = Pa_GetDefaultInputDeviceID();
+#endif
+        if (indeviceno == paNoDevice) inchannels = 0;
+	post("using default input device number: %d", indeviceno);
+    }
+    if (outdeviceno<0) {
+#ifdef PA19
+        outdeviceno = Pa_GetDefaultOutputDevice();
+#else
+        outdeviceno = Pa_GetDefaultOutputDeviceID();
+#endif
+	if(outdeviceno == paNoDevice) outchannels = 0;
+	post("using default output device number: %d", outdeviceno);
+    }
+    /* post("nchan %d, flags %d, bufs %d, framesperbuf %d", nchannels, flags, nbuffers, framesperbuf); */
+    /* 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; aStream-> inbytesPerFrame = bytesPerSample * aStream-> insamplesPerFrame;
+    aStream->outsamplesPerFrame = outchannels; aStream->outbytesPerFrame = bytesPerSample * aStream->outsamplesPerFrame;
+    err = Pa_Initialize();
+    if (err != paNoError) goto error;
+#ifdef PA19
+    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 */
+#else
+/* Warning: numFrames must be larger than amount of data processed per
+  interrupt inside PA to prevent glitches. */  /* MSP */
+    minNumBuffers = Pa_GetMinNumBuffers(framesperbuf, sampleRate);
+    if (minNumBuffers > nbuffers)
+        post("warning: number of buffers %d less than recommended minimum %d", (int)nbuffers, (int)minNumBuffers);
+#endif
+    numFrames = nbuffers * framesperbuf;
+    /* post("numFrames %d", 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 = PD_RingBuffer_GetWriteAvailable( &aStream->outFIFO );
+        PD_RingBuffer_AdvanceWriteIndex( &aStream->outFIFO, numBytes );
+    }
+
+/* Open a PortAudio stream that we will use to communicate with the underlying audio drivers. */
+#ifdef PA19
+    err = Pa_OpenStream(&aStream->stream, (doRead ? &instreamparams : 0), (doWrite ? &outstreamparams : 0),
+              sampleRate, framesperbuf, paNoFlag, blockingIOCallback, aStream);
+#else
+    err = Pa_OpenStream(&aStream->stream,
+		(doRead  ?  indeviceno : paNoDevice), (doRead  ?  aStream->insamplesPerFrame : 0 ), format, NULL,
+		(doWrite ? outdeviceno : paNoDevice), (doWrite ? aStream->outsamplesPerFrame : 0 ), format, NULL,
+		sampleRate, framesperbuf, nbuffers, paNoFlag, blockingIOCallback, aStream);
+#endif
+    if (err != paNoError) goto error;
+    err = Pa_StartStream( aStream->stream );
+    if (err != paNoError) {
+        error("Pa_StartStream failed; closing audio stream...");
+        PD_CloseAudioStream(aStream);
+        goto error;
+    }
+    *rwblPtr = aStream;
+    return paNoError;
+error:
+    *rwblPtr = NULL;
+    return err;
+}
+
+/************************************************************/
+PaError PD_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 = PD_RingBuffer_GetWriteAvailable( &aStream->outFIFO );
+        while (bytesEmpty<byteSize) {
+            NPa_Sleep( 10 ); /* MSP */
+            bytesEmpty = PD_RingBuffer_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;
+}