From 8e401dbe90cc77b1f3067a917d9fa48cefa3fcdb Mon Sep 17 00:00:00 2001 From: Anton Khirnov Date: Sun, 7 Oct 2012 15:45:44 +0200 Subject: lavu: add a new API for reference-counted data buffers. --- libavutil/buffer_internal.h | 60 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 libavutil/buffer_internal.h (limited to 'libavutil/buffer_internal.h') diff --git a/libavutil/buffer_internal.h b/libavutil/buffer_internal.h new file mode 100644 index 0000000000..677c341d64 --- /dev/null +++ b/libavutil/buffer_internal.h @@ -0,0 +1,60 @@ +/* + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_BUFFER_INTERNAL_H +#define AVUTIL_BUFFER_INTERNAL_H + +#include + +#include "buffer.h" + +/** + * The buffer is always treated as read-only. + */ +#define BUFFER_FLAG_READONLY (1 << 0) +/** + * The buffer was av_realloc()ed, so it is reallocatable. + */ +#define BUFFER_FLAG_REALLOCATABLE (1 << 1) + +struct AVBuffer { + uint8_t *data; /**< data described by this buffer */ + int size; /**< size of data in bytes */ + + /** + * number of existing AVBufferRef instances referring to this buffer + */ + volatile int refcount; + + /** + * a callback for freeing the data + */ + void (*free)(void *opaque, uint8_t *data); + + /** + * an opaque pointer, to be used by the freeing callback + */ + void *opaque; + + /** + * A combination of BUFFER_FLAG_* + */ + int flags; +}; + +#endif /* AVUTIL_BUFFER_INTERNAL_H */ -- cgit v1.2.3