From 8dbec761cf858ea65900c8a094599857208d8c3a Mon Sep 17 00:00:00 2001 From: "N.N." Date: Tue, 5 Jan 2010 22:49:36 +0000 Subject: svn path=/trunk/; revision=12907 --- desiredata/src/s_audio_paring.c | 172 ---------------------------------------- 1 file changed, 172 deletions(-) delete mode 100644 desiredata/src/s_audio_paring.c (limited to 'desiredata/src/s_audio_paring.c') 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 -#include -#include -#include "s_audio_paring.h" -#include - -/* 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; -} -- cgit v1.2.1