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Diffstat (limited to 'contrib/ffmpeg/libavutil/fifo.c')
-rw-r--r--contrib/ffmpeg/libavutil/fifo.c114
1 files changed, 0 insertions, 114 deletions
diff --git a/contrib/ffmpeg/libavutil/fifo.c b/contrib/ffmpeg/libavutil/fifo.c
deleted file mode 100644
index 8ac3a0cb5..000000000
--- a/contrib/ffmpeg/libavutil/fifo.c
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * A very simple circular buffer FIFO implementation
- * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
- * Copyright (c) 2006 Roman Shaposhnik
- *
- * 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
- */
-#include "common.h"
-#include "fifo.h"
-
-int av_fifo_init(AVFifoBuffer *f, int size)
-{
- f->wptr = f->rptr =
- f->buffer = av_malloc(size);
- f->end = f->buffer + size;
- if (!f->buffer)
- return -1;
- return 0;
-}
-
-void av_fifo_free(AVFifoBuffer *f)
-{
- av_free(f->buffer);
-}
-
-int av_fifo_size(AVFifoBuffer *f)
-{
- int size = f->wptr - f->rptr;
- if (size < 0)
- size += f->end - f->buffer;
- return size;
-}
-
-/**
- * Get data from the fifo (returns -1 if not enough data).
- */
-int av_fifo_read(AVFifoBuffer *f, uint8_t *buf, int buf_size)
-{
- return av_fifo_generic_read(f, buf_size, NULL, buf);
-}
-
-/**
- * Resizes a FIFO.
- */
-void av_fifo_realloc(AVFifoBuffer *f, unsigned int new_size) {
- unsigned int old_size= f->end - f->buffer;
-
- if(old_size < new_size){
- int len= av_fifo_size(f);
- AVFifoBuffer f2;
-
- av_fifo_init(&f2, new_size);
- av_fifo_read(f, f2.buffer, len);
- f2.wptr += len;
- av_free(f->buffer);
- *f= f2;
- }
-}
-
-void av_fifo_write(AVFifoBuffer *f, const uint8_t *buf, int size)
-{
- do {
- int len = FFMIN(f->end - f->wptr, size);
- memcpy(f->wptr, buf, len);
- f->wptr += len;
- if (f->wptr >= f->end)
- f->wptr = f->buffer;
- buf += len;
- size -= len;
- } while (size > 0);
-}
-
-
-/** get data from the fifo (return -1 if not enough data) */
-int av_fifo_generic_read(AVFifoBuffer *f, int buf_size, void (*func)(void*, void*, int), void* dest)
-{
- int size = av_fifo_size(f);
-
- if (size < buf_size)
- return -1;
- do {
- int len = FFMIN(f->end - f->rptr, buf_size);
- if(func) func(dest, f->rptr, len);
- else{
- memcpy(dest, f->rptr, len);
- dest = (uint8_t*)dest + len;
- }
- av_fifo_drain(f, len);
- buf_size -= len;
- } while (buf_size > 0);
- return 0;
-}
-
-/** discard data from the fifo */
-void av_fifo_drain(AVFifoBuffer *f, int size)
-{
- f->rptr += size;
- if (f->rptr >= f->end)
- f->rptr -= f->end - f->buffer;
-}