[Freeswitch-svn] [commit] r5435 - freeswitch/trunk/src/mod/endpoints/mod_portaudio
Freeswitch SVN
anthm at freeswitch.org
Thu Jun 21 18:48:58 EDT 2007
Author: anthm
Date: Thu Jun 21 18:48:58 2007
New Revision: 5435
Modified:
freeswitch/trunk/src/mod/endpoints/mod_portaudio/pa_ringbuffer.c
freeswitch/trunk/src/mod/endpoints/mod_portaudio/pa_ringbuffer.h
Log:
update
Modified: freeswitch/trunk/src/mod/endpoints/mod_portaudio/pa_ringbuffer.c
==============================================================================
--- freeswitch/trunk/src/mod/endpoints/mod_portaudio/pa_ringbuffer.c (original)
+++ freeswitch/trunk/src/mod/endpoints/mod_portaudio/pa_ringbuffer.c Thu Jun 21 18:48:58 2007
@@ -71,16 +71,27 @@
*
****************/
-#if defined(HAVE_LIBKERN_OSATOMIC_H) && (defined(__APPLE__) || defined(__FreeBSD__))
+#if defined(__VIA_HACK__)
+#define NO_BARRIER
+#endif
+
+#if defined(NO_BARRIER)
+# define PaUtil_FullMemoryBarrier()
+# define PaUtil_ReadMemoryBarrier()
+# define PaUtil_WriteMemoryBarrier()
+#else
+
+#if defined(__APPLE__) //|| defined(__FreeBSD__)
# include <libkern/OSAtomic.h>
- /* Here are the memory barrier functions. Mac OS X and FreeBSD only provide
- full memory barriers, so the three types of barriers are the same. */
+ /* Here are the memory barrier functions. Mac OS X and FreeBSD only provide
+ full memory barriers, so the three types of barriers are the same. */
# define PaUtil_FullMemoryBarrier() OSMemoryBarrier()
# define PaUtil_ReadMemoryBarrier() OSMemoryBarrier()
# define PaUtil_WriteMemoryBarrier() OSMemoryBarrier()
#elif defined(__GNUC__)
- /* GCC understands volatile __asm__ and "memory" to mean it
- * should not reorder memory read/writes */
+
+ /* GCC understands volatile asm and "memory" to mean it
+ * should not reorder memory read/writes */
# if defined( __PPC__ )
# define PaUtil_FullMemoryBarrier() __asm__ volatile("sync":::"memory")
# define PaUtil_ReadMemoryBarrier() __asm__ volatile("sync":::"memory")
@@ -90,63 +101,61 @@
# define PaUtil_ReadMemoryBarrier() __asm__ volatile("lfence":::"memory")
# define PaUtil_WriteMemoryBarrier() __asm__ volatile("sfence":::"memory")
# else
-# ifdef ALLOW_SMP_DANGERS
-# warning Memory barriers not defined on this system or system unknown
-# warning For SMP safety, you should fix this.
-# define PaUtil_FullMemoryBarrier()
-# define PaUtil_ReadMemoryBarrier()
-# define PaUtil_WriteMemoryBarrier()
-# else
-# error Memory barriers are not defined on this system. You can still compile by defining ALLOW_SMP_DANGERS, but SMP safety will not be guaranteed.
-# endif
-# endif
-#else
-# ifdef ALLOW_SMP_DANGERS
-# warning Memory barriers not defined on this system or system unknown
-# warning For SMP safety, you should fix this.
# define PaUtil_FullMemoryBarrier()
# define PaUtil_ReadMemoryBarrier()
# define PaUtil_WriteMemoryBarrier()
-# else
-# error Memory barriers are not defined on this system. You can still compile by defining ALLOW_SMP_DANGERS, but SMP safety will not be guaranteed.
# endif
+#elif defined(_MSC_VER)
+# include <intrin.h>
+# pragma intrinsic(_ReadWriteBarrier)
+# pragma intrinsic(_ReadBarrier)
+# pragma intrinsic(_WriteBarrier)
+# define PaUtil_FullMemoryBarrier() _ReadWriteBarrier()
+# define PaUtil_ReadMemoryBarrier() _ReadBarrier()
+# define PaUtil_WriteMemoryBarrier() _WriteBarrier()
+#else
+# define PaUtil_FullMemoryBarrier()
+# define PaUtil_ReadMemoryBarrier()
+# define PaUtil_WriteMemoryBarrier()
+#endif
#endif
-
/***************************************************************************
* Initialize FIFO.
* numBytes must be power of 2, returns -1 if not.
*/
-long PaUtil_InitializeRingBuffer( PaUtilRingBuffer *rbuf, long numBytes, void *dataPtr )
+long PaUtil_InitializeRingBuffer(PaUtilRingBuffer * rbuf, long numBytes, void *dataPtr)
{
- if( ((numBytes-1) & numBytes) != 0) return -1; /* Not Power of two. */
- rbuf->bufferSize = numBytes;
- rbuf->buffer = (char *)dataPtr;
- PaUtil_FlushRingBuffer( rbuf );
- rbuf->bigMask = (numBytes*2)-1;
- rbuf->smallMask = (numBytes)-1;
- return 0;
+ if (((numBytes - 1) & numBytes) != 0)
+ return -1; /* Not Power of two. */
+ rbuf->bufferSize = numBytes;
+ rbuf->buffer = (char *) dataPtr;
+ PaUtil_FlushRingBuffer(rbuf);
+ rbuf->bigMask = (numBytes * 2) - 1;
+ rbuf->smallMask = (numBytes) - 1;
+ return 0;
}
/***************************************************************************
** Return number of bytes available for reading. */
-long PaUtil_GetRingBufferReadAvailable( PaUtilRingBuffer *rbuf )
+long PaUtil_GetRingBufferReadAvailable(PaUtilRingBuffer * rbuf)
{
- PaUtil_ReadMemoryBarrier();
- return ( (rbuf->writeIndex - rbuf->readIndex) & rbuf->bigMask );
+ PaUtil_ReadMemoryBarrier();
+ return ((rbuf->writeIndex - rbuf->readIndex) & rbuf->bigMask);
}
+
/***************************************************************************
** Return number of bytes available for writing. */
-long PaUtil_GetRingBufferWriteAvailable( PaUtilRingBuffer *rbuf )
+long PaUtil_GetRingBufferWriteAvailable(PaUtilRingBuffer * rbuf)
{
- /* Since we are calling PaUtil_GetRingBufferReadAvailable, we don't need an aditional MB */
- return ( rbuf->bufferSize - PaUtil_GetRingBufferReadAvailable(rbuf));
+ /* Since we are calling PaUtil_GetRingBufferReadAvailable, we don't need an aditional MB */
+ return (rbuf->bufferSize - PaUtil_GetRingBufferReadAvailable(rbuf));
}
/***************************************************************************
** Clear buffer. Should only be called when buffer is NOT being read. */
-void PaUtil_FlushRingBuffer( PaUtilRingBuffer *rbuf )
+void PaUtil_FlushRingBuffer(PaUtilRingBuffer * rbuf)
{
- rbuf->writeIndex = rbuf->readIndex = 0;
+ rbuf->writeIndex = rbuf->readIndex = 0;
}
/***************************************************************************
@@ -155,42 +164,38 @@
** If non-contiguous, size2 will be the size of second region.
** Returns room available to be written or numBytes, whichever is smaller.
*/
-long PaUtil_GetRingBufferWriteRegions( PaUtilRingBuffer *rbuf, long numBytes,
- void **dataPtr1, long *sizePtr1,
- void **dataPtr2, long *sizePtr2 )
-{
- long index;
- long available = PaUtil_GetRingBufferWriteAvailable( rbuf );
- if( numBytes > available ) numBytes = available;
- /* Check to see if write is not contiguous. */
- index = rbuf->writeIndex & rbuf->smallMask;
- 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 PaUtil_GetRingBufferWriteRegions(PaUtilRingBuffer * rbuf, long numBytes, void **dataPtr1, long *sizePtr1, void **dataPtr2, long *sizePtr2)
+{
+ long index;
+ long available = PaUtil_GetRingBufferWriteAvailable(rbuf);
+ if (numBytes > available)
+ numBytes = available;
+ /* Check to see if write is not contiguous. */
+ index = rbuf->writeIndex & rbuf->smallMask;
+ 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 PaUtil_AdvanceRingBufferWriteIndex( PaUtilRingBuffer *rbuf, long numBytes )
+long PaUtil_AdvanceRingBufferWriteIndex(PaUtilRingBuffer * rbuf, long numBytes)
{
- /* we need to ensure that previous writes are seen before we update the write index */
- PaUtil_WriteMemoryBarrier();
- return rbuf->writeIndex = (rbuf->writeIndex + numBytes) & rbuf->bigMask;
+ /* we need to ensure that previous writes are seen before we update the write index */
+ PaUtil_WriteMemoryBarrier();
+ return rbuf->writeIndex = (rbuf->writeIndex + numBytes) & rbuf->bigMask;
}
/***************************************************************************
@@ -199,81 +204,72 @@
** If non-contiguous, size2 will be the size of second region.
** Returns room available to be written or numBytes, whichever is smaller.
*/
-long PaUtil_GetRingBufferReadRegions( PaUtilRingBuffer *rbuf, long numBytes,
- void **dataPtr1, long *sizePtr1,
- void **dataPtr2, long *sizePtr2 )
-{
- long index;
- long available = PaUtil_GetRingBufferReadAvailable( rbuf );
- if( numBytes > available ) numBytes = available;
- /* Check to see if read is not contiguous. */
- index = rbuf->readIndex & rbuf->smallMask;
- 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 PaUtil_GetRingBufferReadRegions(PaUtilRingBuffer * rbuf, long numBytes, void **dataPtr1, long *sizePtr1, void **dataPtr2, long *sizePtr2)
+{
+ long index;
+ long available = PaUtil_GetRingBufferReadAvailable(rbuf);
+ if (numBytes > available)
+ numBytes = available;
+ /* Check to see if read is not contiguous. */
+ index = rbuf->readIndex & rbuf->smallMask;
+ 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 PaUtil_AdvanceRingBufferReadIndex( PaUtilRingBuffer *rbuf, long numBytes )
+long PaUtil_AdvanceRingBufferReadIndex(PaUtilRingBuffer * rbuf, long numBytes)
{
- /* we need to ensure that previous writes are always seen before updating the index. */
- PaUtil_WriteMemoryBarrier();
- return rbuf->readIndex = (rbuf->readIndex + numBytes) & rbuf->bigMask;
+ /* we need to ensure that previous writes are always seen before updating the index. */
+ PaUtil_WriteMemoryBarrier();
+ return rbuf->readIndex = (rbuf->readIndex + numBytes) & rbuf->bigMask;
}
/***************************************************************************
** Return bytes written. */
-long PaUtil_WriteRingBuffer( PaUtilRingBuffer *rbuf, const void *data, long numBytes )
+long PaUtil_WriteRingBuffer(PaUtilRingBuffer * rbuf, const void *data, long numBytes)
{
- long size1, size2, numWritten;
- void *data1, *data2;
- numWritten = PaUtil_GetRingBufferWriteRegions( 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 );
- }
- PaUtil_AdvanceRingBufferWriteIndex( rbuf, numWritten );
- return numWritten;
+ long size1, size2, numWritten;
+ void *data1, *data2;
+ numWritten = PaUtil_GetRingBufferWriteRegions(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);
+ }
+ PaUtil_AdvanceRingBufferWriteIndex(rbuf, numWritten);
+ return numWritten;
}
/***************************************************************************
** Return bytes read. */
-long PaUtil_ReadRingBuffer( PaUtilRingBuffer *rbuf, void *data, long numBytes )
+long PaUtil_ReadRingBuffer(PaUtilRingBuffer * rbuf, void *data, long numBytes)
{
- long size1, size2, numRead;
- void *data1, *data2;
- numRead = PaUtil_GetRingBufferReadRegions( 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 );
- }
- PaUtil_AdvanceRingBufferReadIndex( rbuf, numRead );
- return numRead;
+ long size1, size2, numRead;
+ void *data1, *data2;
+ numRead = PaUtil_GetRingBufferReadRegions(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);
+ }
+ PaUtil_AdvanceRingBufferReadIndex(rbuf, numRead);
+ return numRead;
}
Modified: freeswitch/trunk/src/mod/endpoints/mod_portaudio/pa_ringbuffer.h
==============================================================================
--- freeswitch/trunk/src/mod/endpoints/mod_portaudio/pa_ringbuffer.h (original)
+++ freeswitch/trunk/src/mod/endpoints/mod_portaudio/pa_ringbuffer.h Thu Jun 21 18:48:58 2007
@@ -51,19 +51,17 @@
*/
#ifdef __cplusplus
-extern "C"
-{
-#endif /* __cplusplus */
-
-typedef struct PaUtilRingBuffer
-{
- long bufferSize; /* Number of bytes in FIFO. Power of 2. Set by PaUtil_InitRingBuffer. */
- long writeIndex; /* Index of next writable byte. Set by PaUtil_AdvanceRingBufferWriteIndex. */
- long readIndex; /* Index of next readable byte. Set by PaUtil_AdvanceRingBufferReadIndex. */
- long bigMask; /* Used for wrapping indices with extra bit to distinguish full/empty. */
- long smallMask; /* Used for fitting indices to buffer. */
- char *buffer;
-}PaUtilRingBuffer;
+extern "C" {
+#endif /* __cplusplus */
+
+ typedef struct PaUtilRingBuffer {
+ long bufferSize; /* Number of bytes in FIFO. Power of 2. Set by PaUtil_InitRingBuffer. */
+ long writeIndex; /* Index of next writable byte. Set by PaUtil_AdvanceRingBufferWriteIndex. */
+ long readIndex; /* Index of next readable byte. Set by PaUtil_AdvanceRingBufferReadIndex. */
+ long bigMask; /* Used for wrapping indices with extra bit to distinguish full/empty. */
+ long smallMask; /* Used for fitting indices to buffer. */
+ char *buffer;
+ } PaUtilRingBuffer;
/** Initialize Ring Buffer.
@@ -76,13 +74,13 @@
@return -1 if numBytes is not a power of 2, otherwise 0.
*/
-long PaUtil_InitializeRingBuffer( PaUtilRingBuffer *rbuf, long numBytes, void *dataPtr );
+ long PaUtil_InitializeRingBuffer(PaUtilRingBuffer * rbuf, long numBytes, void *dataPtr);
/** Clear buffer. Should only be called when buffer is NOT being read.
@param rbuf The ring buffer.
*/
-void PaUtil_FlushRingBuffer( PaUtilRingBuffer *rbuf );
+ void PaUtil_FlushRingBuffer(PaUtilRingBuffer * rbuf);
/** Retrieve the number of bytes available in the ring buffer for writing.
@@ -90,7 +88,7 @@
@return The number of bytes available for writing.
*/
-long PaUtil_GetRingBufferWriteAvailable( PaUtilRingBuffer *rbuf );
+ long PaUtil_GetRingBufferWriteAvailable(PaUtilRingBuffer * rbuf);
/** Retrieve the number of bytes available in the ring buffer for reading.
@@ -98,7 +96,7 @@
@return The number of bytes available for reading.
*/
-long PaUtil_GetRingBufferReadAvailable( PaUtilRingBuffer *rbuf );
+ long PaUtil_GetRingBufferReadAvailable(PaUtilRingBuffer * rbuf);
/** Write data to the ring buffer.
@@ -110,7 +108,7 @@
@return The number of bytes written.
*/
-long PaUtil_WriteRingBuffer( PaUtilRingBuffer *rbuf, const void *data, long numBytes );
+ long PaUtil_WriteRingBuffer(PaUtilRingBuffer * rbuf, const void *data, long numBytes);
/** Read data from the ring buffer.
@@ -122,7 +120,7 @@
@return The number of bytes read.
*/
-long PaUtil_ReadRingBuffer( PaUtilRingBuffer *rbuf, void *data, long numBytes );
+ long PaUtil_ReadRingBuffer(PaUtilRingBuffer * rbuf, void *data, long numBytes);
/** Get address of region(s) to which we can write data.
@@ -144,9 +142,7 @@
@return The room available to be written or numBytes, whichever is smaller.
*/
-long PaUtil_GetRingBufferWriteRegions( PaUtilRingBuffer *rbuf, long numBytes,
- void **dataPtr1, long *sizePtr1,
- void **dataPtr2, long *sizePtr2 );
+ long PaUtil_GetRingBufferWriteRegions(PaUtilRingBuffer * rbuf, long numBytes, void **dataPtr1, long *sizePtr1, void **dataPtr2, long *sizePtr2);
/** Advance the write index to the next location to be written.
@@ -156,7 +152,7 @@
@return The new position.
*/
-long PaUtil_AdvanceRingBufferWriteIndex( PaUtilRingBuffer *rbuf, long numBytes );
+ long PaUtil_AdvanceRingBufferWriteIndex(PaUtilRingBuffer * rbuf, long numBytes);
/** Get address of region(s) from which we can write data.
@@ -178,9 +174,7 @@
@return The number of bytes available for reading.
*/
-long PaUtil_GetRingBufferReadRegions( PaUtilRingBuffer *rbuf, long numBytes,
- void **dataPtr1, long *sizePtr1,
- void **dataPtr2, long *sizePtr2 );
+ long PaUtil_GetRingBufferReadRegions(PaUtilRingBuffer * rbuf, long numBytes, void **dataPtr1, long *sizePtr1, void **dataPtr2, long *sizePtr2);
/** Advance the read index to the next location to be read.
@@ -190,9 +184,9 @@
@return The new position.
*/
-long PaUtil_AdvanceRingBufferReadIndex( PaUtilRingBuffer *rbuf, long numBytes );
+ long PaUtil_AdvanceRingBufferReadIndex(PaUtilRingBuffer * rbuf, long numBytes);
#ifdef __cplusplus
}
-#endif /* __cplusplus */
-#endif /* PA_RINGBUFFER_H */
+#endif /* __cplusplus */
+#endif /* PA_RINGBUFFER_H */
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