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authorN.N. <matju@users.sourceforge.net>2010-01-05 22:49:36 +0000
committerN.N. <matju@users.sourceforge.net>2010-01-05 22:49:36 +0000
commit8dbec761cf858ea65900c8a094599857208d8c3a (patch)
tree3228c023f87f23a354da3b57fdc2afe5b7052032 /desiredata/src/s_audio_paring.c
parent529e59635598e2d90a7a49f6b4c676f8366109ba (diff)
svn path=/trunk/; revision=12907
Diffstat (limited to 'desiredata/src/s_audio_paring.c')
-rw-r--r--desiredata/src/s_audio_paring.c172
1 files changed, 0 insertions, 172 deletions
diff --git a/desiredata/src/s_audio_paring.c b/desiredata/src/s_audio_paring.c
deleted file mode 100644
index dcdcce0e..00000000
--- a/desiredata/src/s_audio_paring.c
+++ /dev/null
@@ -1,172 +0,0 @@
-/*
- * $Id: s_audio_paring.c,v 1.1.4.1.2.1.2.1 2007-07-31 00:10:37 matju Exp $
- * ringbuffer.c
- * Ring Buffer 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.
- */
-/*
- * modified 2002/07/13 by olaf.matthes@gmx.de to allow any number if channels
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <math.h>
-#include "s_audio_paring.h"
-#include <string.h>
-
-/* Initialize FIFO. */
-long PD_RingBuffer_Init(RingBuffer *rbuf, long numBytes, void *dataPtr) {
- rbuf->bufferSize = numBytes;
- rbuf->buffer = (char *)dataPtr;
- PD_RingBuffer_Flush( rbuf );
- return 0;
-}
-/***************************************************************************
-** Return number of bytes available for reading. */
-long PD_RingBuffer_GetReadAvailable(RingBuffer *rbuf) {
- long ret = rbuf->writeIndex - rbuf->readIndex;
- if (ret < 0) ret += 2 * rbuf->bufferSize;
- if (ret < 0 || ret > rbuf->bufferSize) error("consistency check failed: PD_RingBuffer_GetReadAvailable");
- return ret;
-}
-/* Return number of bytes available for writing. */
-long PD_RingBuffer_GetWriteAvailable(RingBuffer *rbuf) {
- return rbuf->bufferSize - PD_RingBuffer_GetReadAvailable(rbuf);
-}
-
-/* Clear buffer. Should only be called when buffer is NOT being read. */
-void PD_RingBuffer_Flush(RingBuffer *rbuf) {
- rbuf->writeIndex = rbuf->readIndex = 0;
-}
-
-/* Get address of region(s) to which we can write data. If the region is contiguous, size2 will be zero.
- If non-contiguous, size2 will be the size of second region.
- Returns room available to be written or numBytes, whichever is smaller. */
-long PD_RingBuffer_GetWriteRegions(RingBuffer *rbuf, long numBytes,
-void **dataPtr1, long *sizePtr1, void **dataPtr2, long *sizePtr2) {
- long index;
- long available = PD_RingBuffer_GetWriteAvailable(rbuf);
- if (numBytes > available) numBytes = available;
- /* Check to see if write is not contiguous. */
- index = rbuf->writeIndex;
- while (index >= rbuf->bufferSize) index -= rbuf->bufferSize;
- if ((index + numBytes) > rbuf->bufferSize) {
- /* Write data in two blocks that wrap the buffer. */
- long firstHalf = rbuf->bufferSize - index;
- *dataPtr1 = &rbuf->buffer[index];
- *sizePtr1 = firstHalf;
- *dataPtr2 = &rbuf->buffer[0];
- *sizePtr2 = numBytes - firstHalf;
- } else {
- *dataPtr1 = &rbuf->buffer[index];
- *sizePtr1 = numBytes;
- *dataPtr2 = NULL;
- *sizePtr2 = 0;
- }
- return numBytes;
-}
-
-
-/***************************************************************************
-*/
-long PD_RingBuffer_AdvanceWriteIndex(RingBuffer *rbuf, long numBytes) {
- long ret = rbuf->writeIndex + numBytes;
- if (ret >= 2 * rbuf->bufferSize) ret -= 2 * rbuf->bufferSize; /* check for end of buffer */
- return rbuf->writeIndex = ret;
-}
-
-/***************************************************************************
-** Get address of region(s) from which we can read data.
-** If the region is contiguous, size2 will be zero.
-** If non-contiguous, size2 will be the size of second region.
-** Returns room available to be written or numBytes, whichever is smaller.
-*/
-long PD_RingBuffer_GetReadRegions(RingBuffer *rbuf, long numBytes,
-void **dataPtr1, long *sizePtr1, void **dataPtr2, long *sizePtr2) {
- long index;
- long available = PD_RingBuffer_GetReadAvailable(rbuf);
- if (numBytes > available) numBytes = available;
- /* Check to see if read is not contiguous. */
- index = rbuf->readIndex;
- while (index >= rbuf->bufferSize) index -= rbuf->bufferSize;
- if ((index + numBytes) > rbuf->bufferSize) {
- /* Write data in two blocks that wrap the buffer. */
- long firstHalf = rbuf->bufferSize - index;
- *dataPtr1 = &rbuf->buffer[index];
- *sizePtr1 = firstHalf;
- *dataPtr2 = &rbuf->buffer[0];
- *sizePtr2 = numBytes - firstHalf;
- } else {
- *dataPtr1 = &rbuf->buffer[index];
- *sizePtr1 = numBytes;
- *dataPtr2 = NULL;
- *sizePtr2 = 0;
- }
- return numBytes;
-}
-
-long PD_RingBuffer_AdvanceReadIndex( RingBuffer *rbuf, long numBytes ) {
- long ret = (rbuf->readIndex + numBytes);
- if( ret >= 2 * rbuf->bufferSize) ret -= 2 * rbuf->bufferSize;
- return rbuf->readIndex = ret;
-}
-
-/* Return bytes written. */
-long PD_RingBuffer_Write(RingBuffer *rbuf, const void *data, long numBytes) {
- long size1, size2, numWritten;
- void *data1, *data2;
- numWritten = PD_RingBuffer_GetWriteRegions( rbuf, numBytes, &data1, &size1, &data2, &size2 );
- if (size2 > 0) {
- memcpy(data1, data, size1);
- data = ((char *)data) + size1;
- memcpy(data2, data, size2);
- } else {
- memcpy(data1, data, size1);
- }
- PD_RingBuffer_AdvanceWriteIndex( rbuf, numWritten );
- return numWritten;
-}
-
-/* Return bytes read. */
-long PD_RingBuffer_Read(RingBuffer *rbuf, void *data, long numBytes) {
- long size1, size2, numRead;
- void *data1, *data2;
- numRead = PD_RingBuffer_GetReadRegions( rbuf, numBytes, &data1, &size1, &data2, &size2 );
- if (size2 > 0) {
- memcpy(data, data1, size1);
- data = ((char *)data) + size1;
- memcpy(data, data2, size2);
- } else {
- memcpy(data, data1, size1);
- }
- PD_RingBuffer_AdvanceReadIndex( rbuf, numRead );
- return numRead;
-}