linux数字电视播放器,比先的版本高一些.

				#ifndef EM8300_FIFO_H				#define EM8300_FIFO_H								#define FIFOTYPE_AUDIO 1				#define FIFOTYPE_VIDEO 2								struct video_fifoslot_s {					unsigned flags;					unsigned physaddress_hi;					unsigned physaddress_lo;					unsigned slotsize;				};								struct audio_fifoslot_s {					unsigned physaddress_hi;					unsigned physaddress_lo;					unsigned slotsize;				};								struct pts_fifoslot_s {					unsigned streamoffset_hi;					unsigned streamoffset_lo;					unsigned pts_hi;					unsigned pts_lo;				};								struct em8300_s;				typedef void (*preprocess_cb_t)(struct em8300_s *, unsigned char *,								const unsigned char *, int);								struct fifo_s {					struct em8300_s *em;				    					int valid;									int type;					int nslots;					union {						struct video_fifoslot_s *v;						struct audio_fifoslot_s *a;						struct pts_fifoslot_s *pts;					} slots;					int slotptrsize;					int slotsize;										int start;					int *writeptr;					int *readptr;					int localreadptr;					int threshold;									int bytes;									char *fifobuffer;										preprocess_cb_t preprocess_cb;					int preprocess_ratio,preprocess_maxbufsize;									#if LINUX_VERSION_CODE < 0x020314    					struct wait_queue *wait;				#else					wait_queue_head_t wait;				#endif						int waiting;				};								struct em8300_s;								/*				  Prototypes				*/				int em8300_fifo_init(struct em8300_s *em, struct fifo_s *f,						     int start, int wrptr, int rdptr,						     int pcisize, int slotsize, int fifotype);								struct fifo_s * em8300_fifo_alloc(void);				void em8300_fifo_free(struct fifo_s *f);								int em8300_fifo_write(struct fifo_s *fifo, int n, const char *userbuffer,						      int flags);				int em8300_fifo_writeblocking(struct fifo_s *fifo, int n,							      const char *userbuffer, int flags);				int em8300_fifo_check(struct fifo_s *fifo);				int em8300_fifo_sync(struct fifo_s *fifo);				int em8300_fifo_freeslots(struct fifo_s *fifo);				void em8300_fifo_statusmsg(struct fifo_s *fifo, char *str);				int em8300_fifo_calcbuffered(struct fifo_s *fifo);				int em8300_fifo_isempty(struct fifo_s *fifo);								#endif /* EM8300_FIFO_H */