Removed custom FFmpegLock. Removed ffmpeg headers from third_party/ffmpeg/include.

third_party/ffmpeg/include/libavutil/fifo.h

-/*
- * 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 libavutil/fifo.h
- * a very simple circular buffer FIFO implementation
- */
-
-#ifndef AVUTIL_FIFO_H
-#define AVUTIL_FIFO_H
-
-#include <stdint.h>
-#include "avutil.h"
-#include "common.h"
-
-typedef struct AVFifoBuffer {
-    uint8_t *buffer;
-    uint8_t *rptr, *wptr, *end;
-    uint32_t rndx, wndx;
-} AVFifoBuffer;
-
-/**
- * Initializes an AVFifoBuffer.
- * @param size of FIFO
- * @return AVFifoBuffer or NULL if mem allocation failure
- */
-AVFifoBuffer *av_fifo_alloc(unsigned int size);
-
-/**
- * Frees an AVFifoBuffer.
- * @param *f AVFifoBuffer to free
- */
-void av_fifo_free(AVFifoBuffer *f);
-
-/**
- * Resets 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);
-
-/**
- * Returns 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);
-
-/**
- * Returns 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);
-
-/**
- * Feeds 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));
-
-/**
- * Feeds data from a user-supplied callback to an AVFifoBuffer.
- * @param *f AVFifoBuffer to write to
- * @param *src data source
- * @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));
-
-/**
- * Resizes an AVFifoBuffer.
- * @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);
-
-/**
- * Reads and discards 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);
-
-static inline uint8_t av_fifo_peek(AVFifoBuffer *f, int offs)
-{
-    uint8_t *ptr = f->rptr + offs;
-    if (ptr >= f->end)
-        ptr -= f->end - f->buffer;
-    return *ptr;
-}
-#endif /* AVUTIL_FIFO_H */