Mark Koennecke
8f704ebab9
- Allowed write buffers to become very large in asynnet. Thus in order to allow for the transfer of large images. tested ub to 2kx2k, 16MB - Handle lack of space in the write buffer more gracefully: just skip the image
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/**
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* This is a buffer to store bytes for reading and writing.
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*
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* copyright: see file COPYRIGHT
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*
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* Mark Koennecke, January 2009
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*/
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#ifndef RWPUFFER_H_
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#define RWPUFFER_H_
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typedef struct __RWBuffer *prwBuffer;
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/**
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* \brief create a RW buffer.
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* \param size The size of the buffer.
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* \return NULL on success, else a pointer to t a new rwPuffer
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*/
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prwBuffer MakeRWPuffer(int size);
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/**
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* \brief create a RW buffer which can grow.
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* \param size The size of the buffer.
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* \param maxSize The maximum size of the buffer.
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* \return NULL on success, else a pointer to t a new rwPuffer
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*/
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prwBuffer MakeBigRWPuffer(int size, int maxSize);
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/**
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* \brief delete a rw buffer.
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* \param self The rwPuffer to delete.
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*/
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void KillRWBuffer(prwBuffer self);
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/**
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* \brief store some data in the RW buffer
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* \param self The rw buffer to store the data in
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* \param data pointer to the data to store
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* \param count The number of bytes to store
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* \return 1 on success, 0 on failure
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*/
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int StoreRWBuffer(prwBuffer self, void *data, int count);
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/**
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* \brief Test if the data can be stored in the rwBuffer
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* \param self The rw buffer to store the data in
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* \param data pointer to the data to store
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* \param count The number of bytes to store
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* \return 1 when OK, 0 when buffer full
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*/
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int CanStoreRWBuffer(prwBuffer self, void *data, int count);
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/**
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* \brief Get a pointer to the current buffer data
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* \param self the buffer to get the data from
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* \param length Will be set to the number of available bytes.
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* \return A pointer to the data
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*/
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void *GetRWBufferData(prwBuffer self, int *length);
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/**
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* \brief remove data from the buffer
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* \param self the buffer to remove data from
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* \param count The number of bytes to remove
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*/
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void RemoveRWBufferData(prwBuffer self, int count);
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#endif /*RWPUFFER_H_ */
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