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张华
freeswitch
Commits
36ccf76a
提交
36ccf76a
authored
6月 21, 2007
作者:
Anthony Minessale
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update
git-svn-id:
http://svn.freeswitch.org/svn/freeswitch/trunk@5435
d0543943-73ff-0310-b7d9-9358b9ac24b2
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4e50738c
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2 个修改的文件
包含
147 行增加
和
157 行删除
+147
-157
pa_ringbuffer.c
src/mod/endpoints/mod_portaudio/pa_ringbuffer.c
+124
-128
pa_ringbuffer.h
src/mod/endpoints/mod_portaudio/pa_ringbuffer.h
+23
-29
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src/mod/endpoints/mod_portaudio/pa_ringbuffer.c
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36ccf76a
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src/mod/endpoints/mod_portaudio/pa_ringbuffer.h
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36ccf76a
...
...
@@ -51,19 +51,17 @@
*/
#ifdef __cplusplus
extern
"C"
{
extern
"C"
{
#endif
/* __cplusplus */
typedef
struct
PaUtilRingBuffer
{
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
;
}
PaUtilRingBuffer
;
/** Initialize Ring Buffer.
...
...
@@ -76,13 +74,13 @@ typedef struct PaUtilRingBuffer
@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 @@ void PaUtil_FlushRingBuffer( PaUtilRingBuffer *rbuf );
@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 @@ long PaUtil_GetRingBufferWriteAvailable( PaUtilRingBuffer *rbuf );
@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 @@ long PaUtil_GetRingBufferReadAvailable( PaUtilRingBuffer *rbuf );
@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 @@ long PaUtil_WriteRingBuffer( PaUtilRingBuffer *rbuf, const void *data, long numB
@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 @@ long PaUtil_ReadRingBuffer( PaUtilRingBuffer *rbuf, void *data, long numBytes );
@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 @@ long PaUtil_GetRingBufferWriteRegions( PaUtilRingBuffer *rbuf, long numBytes,
@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 @@ long PaUtil_AdvanceRingBufferWriteIndex( PaUtilRingBuffer *rbuf, long numBytes )
@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.
...
...
@@ -190,7 +184,7 @@ long PaUtil_GetRingBufferReadRegions( PaUtilRingBuffer *rbuf, long numBytes,
@return The new position.
*/
long
PaUtil_AdvanceRingBufferReadIndex
(
PaUtilRingBuffer
*
rbuf
,
long
numBytes
);
long
PaUtil_AdvanceRingBufferReadIndex
(
PaUtilRingBuffer
*
rbuf
,
long
numBytes
);
#ifdef __cplusplus
}
...
...
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