ringbuffer.h

 
#ifndef FREERDP_UTILS_RINGBUFFER_H
#define FREERDP_UTILS_RINGBUFFER_H
 
#include <winpr/wtypes.h>
#include <freerdp/api.h>
 
#ifdef __cplusplus
extern "C"
{
#endif
 
  typedef struct
  {
    size_t initialSize;
    size_t freeSize;
    size_t size;
    size_t readPtr;
    size_t writePtr;
    BYTE* buffer;
  } RingBuffer;
 
  typedef struct
  {
    size_t size;
    const BYTE* data;
  } DataChunk;
 
  WINPR_ATTR_NODISCARD
  FREERDP_API BOOL ringbuffer_init(RingBuffer* rb, size_t initialSize);
 
  FREERDP_API void ringbuffer_destroy(RingBuffer* ringbuffer);
 
  WINPR_ATTR_NODISCARD
  FREERDP_API size_t ringbuffer_used(const RingBuffer* ringbuffer);
 
  WINPR_ATTR_NODISCARD
  FREERDP_API size_t ringbuffer_capacity(const RingBuffer* ringbuffer);
 
  WINPR_ATTR_NODISCARD
  FREERDP_API BOOL ringbuffer_write(RingBuffer* rb, const BYTE* ptr, size_t sz);
 
  WINPR_ATTR_NODISCARD
  FREERDP_API BYTE* ringbuffer_ensure_linear_write(RingBuffer* rb, size_t sz);
 
  WINPR_ATTR_NODISCARD
  FREERDP_API BOOL ringbuffer_commit_written_bytes(RingBuffer* rb, size_t sz);
 
  WINPR_ATTR_NODISCARD
  FREERDP_API int ringbuffer_peek(const RingBuffer* rb, DataChunk chunks[2], size_t sz);
 
  FREERDP_API void ringbuffer_commit_read_bytes(RingBuffer* rb, size_t sz);
 
#ifdef __cplusplus
}
#endif
 
#endif /* FREERDP_UTILS_RINGBUFFER_H */