Go to the documentation of this file.00001 #ifndef PA_RINGBUFFER_H
00002 #define PA_RINGBUFFER_H
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00070 #if defined(__APPLE__)
00071 #include <sys/types.h>
00072 typedef int32_t ring_buffer_size_t;
00073 #elif defined( __GNUC__ )
00074 typedef long ring_buffer_size_t;
00075 #elif (_MSC_VER >= 1400)
00076 typedef long ring_buffer_size_t;
00077 #elif defined(_MSC_VER) || defined(__BORLANDC__)
00078 typedef long ring_buffer_size_t;
00079 #else
00080 typedef long ring_buffer_size_t;
00081 #endif
00082
00083
00084
00085 #ifdef __cplusplus
00086 extern "C"
00087 {
00088 #endif
00089
00090 typedef struct PaUtilRingBuffer
00091 {
00092 ring_buffer_size_t bufferSize;
00093 ring_buffer_size_t writeIndex;
00094 ring_buffer_size_t readIndex;
00095 ring_buffer_size_t bigMask;
00096 ring_buffer_size_t smallMask;
00097 ring_buffer_size_t elementSizeBytes;
00098 char *buffer;
00099 }PaUtilRingBuffer;
00100
00114 ring_buffer_size_t PaUtil_InitializeRingBuffer( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementSizeBytes, ring_buffer_size_t elementCount, void *dataPtr );
00115
00120 void PaUtil_FlushRingBuffer( PaUtilRingBuffer *rbuf );
00121
00128 ring_buffer_size_t PaUtil_GetRingBufferWriteAvailable( PaUtilRingBuffer *rbuf );
00129
00136 ring_buffer_size_t PaUtil_GetRingBufferReadAvailable( PaUtilRingBuffer *rbuf );
00137
00148 ring_buffer_size_t PaUtil_WriteRingBuffer( PaUtilRingBuffer *rbuf, const void *data, ring_buffer_size_t elementCount );
00149
00160 ring_buffer_size_t PaUtil_ReadRingBuffer( PaUtilRingBuffer *rbuf, void *data, ring_buffer_size_t elementCount );
00161
00182 ring_buffer_size_t PaUtil_GetRingBufferWriteRegions( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount,
00183 void **dataPtr1, ring_buffer_size_t *sizePtr1,
00184 void **dataPtr2, ring_buffer_size_t *sizePtr2 );
00185
00194 ring_buffer_size_t PaUtil_AdvanceRingBufferWriteIndex( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount );
00195
00216 ring_buffer_size_t PaUtil_GetRingBufferReadRegions( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount,
00217 void **dataPtr1, ring_buffer_size_t *sizePtr1,
00218 void **dataPtr2, ring_buffer_size_t *sizePtr2 );
00219
00228 ring_buffer_size_t PaUtil_AdvanceRingBufferReadIndex( PaUtilRingBuffer *rbuf, ring_buffer_size_t elementCount );
00229
00230 #ifdef __cplusplus
00231 }
00232 #endif
00233 #endif