diff options
| author | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
|---|---|---|
| committer | Tim Redfern <tim@eclectronics.org> | 2014-02-17 13:36:38 +0000 |
| commit | 22e28216336da876e1fd17f380ce42eaf1446769 (patch) | |
| tree | 444dad3dc7e2656992d29f34f7bce31970c122a5 /ffmpeg/libavutil/fifo.h | |
| parent | ae5e8541f6e06e64c28719467cdf366ac57aff31 (diff) | |
chasing indexing error
Diffstat (limited to 'ffmpeg/libavutil/fifo.h')
| -rw-r--r-- | ffmpeg/libavutil/fifo.h | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/ffmpeg/libavutil/fifo.h b/ffmpeg/libavutil/fifo.h deleted file mode 100644 index 849b9a6..0000000 --- a/ffmpeg/libavutil/fifo.h +++ /dev/null @@ -1,144 +0,0 @@ -/* - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file - * a very simple circular buffer FIFO implementation - */ - -#ifndef AVUTIL_FIFO_H -#define AVUTIL_FIFO_H - -#include <stdint.h> -#include "avutil.h" -#include "attributes.h" - -typedef struct AVFifoBuffer { - uint8_t *buffer; - uint8_t *rptr, *wptr, *end; - uint32_t rndx, wndx; -} AVFifoBuffer; - -/** - * Initialize an AVFifoBuffer. - * @param size of FIFO - * @return AVFifoBuffer or NULL in case of memory allocation failure - */ -AVFifoBuffer *av_fifo_alloc(unsigned int size); - -/** - * Free an AVFifoBuffer. - * @param f AVFifoBuffer to free - */ -void av_fifo_free(AVFifoBuffer *f); - -/** - * Reset the AVFifoBuffer to the state right after av_fifo_alloc, in particular it is emptied. - * @param f AVFifoBuffer to reset - */ -void av_fifo_reset(AVFifoBuffer *f); - -/** - * Return the amount of data in bytes in the AVFifoBuffer, that is the - * amount of data you can read from it. - * @param f AVFifoBuffer to read from - * @return size - */ -int av_fifo_size(AVFifoBuffer *f); - -/** - * Return the amount of space in bytes in the AVFifoBuffer, that is the - * amount of data you can write into it. - * @param f AVFifoBuffer to write into - * @return size - */ -int av_fifo_space(AVFifoBuffer *f); - -/** - * Feed data from an AVFifoBuffer to a user-supplied callback. - * @param f AVFifoBuffer to read from - * @param buf_size number of bytes to read - * @param func generic read function - * @param dest data destination - */ -int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size, void (*func)(void*, void*, int)); - -/** - * Feed data from a user-supplied callback to an AVFifoBuffer. - * @param f AVFifoBuffer to write to - * @param src data source; non-const since it may be used as a - * modifiable context by the function defined in func - * @param size number of bytes to write - * @param func generic write function; the first parameter is src, - * the second is dest_buf, the third is dest_buf_size. - * func must return the number of bytes written to dest_buf, or <= 0 to - * indicate no more data available to write. - * If func is NULL, src is interpreted as a simple byte array for source data. - * @return the number of bytes written to the FIFO - */ -int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int (*func)(void*, void*, int)); - -/** - * Resize an AVFifoBuffer. - * In case of reallocation failure, the old FIFO is kept unchanged. - * - * @param f AVFifoBuffer to resize - * @param size new AVFifoBuffer size in bytes - * @return <0 for failure, >=0 otherwise - */ -int av_fifo_realloc2(AVFifoBuffer *f, unsigned int size); - -/** - * Enlarge an AVFifoBuffer. - * In case of reallocation failure, the old FIFO is kept unchanged. - * The new fifo size may be larger than the requested size. - * - * @param f AVFifoBuffer to resize - * @param additional_space the amount of space in bytes to allocate in addition to av_fifo_size() - * @return <0 for failure, >=0 otherwise - */ -int av_fifo_grow(AVFifoBuffer *f, unsigned int additional_space); - -/** - * Read and discard the specified amount of data from an AVFifoBuffer. - * @param f AVFifoBuffer to read from - * @param size amount of data to read in bytes - */ -void av_fifo_drain(AVFifoBuffer *f, int size); - -/** - * Return a pointer to the data stored in a FIFO buffer at a certain offset. - * The FIFO buffer is not modified. - * - * @param f AVFifoBuffer to peek at, f must be non-NULL - * @param offs an offset in bytes, its absolute value must be less - * than the used buffer size or the returned pointer will - * point outside to the buffer data. - * The used buffer size can be checked with av_fifo_size(). - */ -static inline uint8_t *av_fifo_peek2(const AVFifoBuffer *f, int offs) -{ - uint8_t *ptr = f->rptr + offs; - if (ptr >= f->end) - ptr = f->buffer + (ptr - f->end); - else if (ptr < f->buffer) - ptr = f->end - (f->buffer - ptr); - return ptr; -} - -#endif /* AVUTIL_FIFO_H */ |
