29     AVFifoBuffer *f;  in fifo_alloc_common()  local
32     f = av_mallocz(sizeof(AVFifoBuffer));  in fifo_alloc_common()
33     if (!f) {  in fifo_alloc_common()
37     f->buffer = buffer;  in fifo_alloc_common()
38     f->end    = f->buffer + size;  in fifo_alloc_common()
39     av_fifo_reset(f);  in fifo_alloc_common()
40     return f;  in fifo_alloc_common()
55 void av_fifo_free(AVFifoBuffer *f)  in av_fifo_free()  argument
57     if (f) {  in av_fifo_free()
58         av_freep(&f->buffer);  in av_fifo_free()
59         av_free(f);  in av_fifo_free()
63 void av_fifo_freep(AVFifoBuffer **f)  in av_fifo_freep()  argument
65     if (f) {  in av_fifo_freep()
66         av_fifo_free(*f);  in av_fifo_freep()
67         *f = NULL;  in av_fifo_freep()
71 void av_fifo_reset(AVFifoBuffer *f)  in av_fifo_reset()  argument
73     f->wptr = f->rptr = f->buffer;  in av_fifo_reset()
74     f->wndx = f->rndx = 0;  in av_fifo_reset()
77 int av_fifo_size(const AVFifoBuffer *f)  in av_fifo_size()  argument
79     return (uint32_t)(f->wndx - f->rndx);  in av_fifo_size()
82 int av_fifo_space(const AVFifoBuffer *f)  in av_fifo_space()  argument
84     return f->end - f->buffer - av_fifo_size(f);  in av_fifo_space()
87 int av_fifo_realloc2(AVFifoBuffer *f, unsigned int new_size)  in av_fifo_realloc2()  argument
89     unsigned int old_size = f->end - f->buffer;  in av_fifo_realloc2()
92         int len          = av_fifo_size(f);  in av_fifo_realloc2()
97         av_fifo_generic_read(f, f2->buffer, len, NULL);  in av_fifo_realloc2()
100         av_free(f->buffer);  in av_fifo_realloc2()
101         *f = *f2;  in av_fifo_realloc2()
107 int av_fifo_grow(AVFifoBuffer *f, unsigned int size)  in av_fifo_grow()  argument
109     unsigned int old_size = f->end - f->buffer;  in av_fifo_grow()
110     if(size + (unsigned)av_fifo_size(f) < size)  in av_fifo_grow()
113     size += av_fifo_size(f);  in av_fifo_grow()
116         return av_fifo_realloc2(f, FFMAX(size, 2*old_size));  in av_fifo_grow()
122 int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size,  in av_fifo_generic_write()  argument
126     uint32_t wndx= f->wndx;  in av_fifo_generic_write()
127     uint8_t *wptr= f->wptr;  in av_fifo_generic_write()
130         int len = FFMIN(f->end - wptr, size);  in av_fifo_generic_write()
141         if (wptr >= f->end)  in av_fifo_generic_write()
142             wptr = f->buffer;  in av_fifo_generic_write()
146     f->wndx= wndx;  in av_fifo_generic_write()
147     f->wptr= wptr;  in av_fifo_generic_write()
151 int av_fifo_generic_peek_at(AVFifoBuffer *f, void *dest, int offset, int buf_size, void (*func)(voi…  in av_fifo_generic_peek_at()  argument
153     uint8_t *rptr = f->rptr;  in av_fifo_generic_peek_at()
161     av_assert2(buf_size + (unsigned)offset <= f->wndx - f->rndx);  in av_fifo_generic_peek_at()
163     if (offset >= f->end - rptr)  in av_fifo_generic_peek_at()
164         rptr += offset - (f->end - f->buffer);  in av_fifo_generic_peek_at()
171         if (rptr >= f->end)  in av_fifo_generic_peek_at()
172             rptr -= f->end - f->buffer;  in av_fifo_generic_peek_at()
174         len = FFMIN(f->end - rptr, buf_size);  in av_fifo_generic_peek_at()
189 int av_fifo_generic_peek(AVFifoBuffer *f, void *dest, int buf_size,  in av_fifo_generic_peek()  argument
193     uint8_t *rptr = f->rptr;  in av_fifo_generic_peek()
196         int len = FFMIN(f->end - rptr, buf_size);  in av_fifo_generic_peek()
205         if (rptr >= f->end)  in av_fifo_generic_peek()
206             rptr -= f->end - f->buffer;  in av_fifo_generic_peek()
213 int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size,  in av_fifo_generic_read()  argument
218         int len = FFMIN(f->end - f->rptr, buf_size);  in av_fifo_generic_read()
220             func(dest, f->rptr, len);  in av_fifo_generic_read()
222             memcpy(dest, f->rptr, len);  in av_fifo_generic_read()
226         av_fifo_drain(f, len);  in av_fifo_generic_read()
233 void av_fifo_drain(AVFifoBuffer *f, int size)  in av_fifo_drain()  argument
235     av_assert2(av_fifo_size(f) >= size);  in av_fifo_drain()
236     f->rptr += size;  in av_fifo_drain()
237     if (f->rptr >= f->end)  in av_fifo_drain()
238         f->rptr -= f->end - f->buffer;  in av_fifo_drain()
239     f->rndx += size;  in av_fifo_drain()