9dec0e62d91523ae97e1ac4f19dc8a2072e2a45a
[libav.git] / libavutil / fifo.h
1 #ifndef FIFO_H
2 #define FIFO_H
3
4 typedef struct AVFifoBuffer {
5 uint8_t *buffer;
6 uint8_t *rptr, *wptr, *end;
7 } AVFifoBuffer;
8
9 int av_fifo_init(AVFifoBuffer *f, int size);
10 void av_fifo_free(AVFifoBuffer *f);
11 int av_fifo_size(AVFifoBuffer *f);
12 int av_fifo_read(AVFifoBuffer *f, uint8_t *buf, int buf_size);
13 int av_fifo_generic_read(AVFifoBuffer *f, int buf_size, void (*func)(void*, void*, int), void* dest);
14 void av_fifo_write(AVFifoBuffer *f, const uint8_t *buf, int size);
15 void av_fifo_realloc(AVFifoBuffer *f, unsigned int size);
16 void av_fifo_drain(AVFifoBuffer *f, int size);
17
18 static inline uint8_t av_fifo_peek(AVFifoBuffer *f, int offs)
19 {
20 uint8_t *ptr = f->rptr + offs;
21 if (ptr >= f->end)
22 ptr -= f->end - f->buffer;
23 return *ptr;
24 }
25 #endif /* FIFO_H */