gstreamer/gst/rtp/gstbuffermemory.h
Kristofer Björkström 54b6ee0c55 buffermemory: keep track of buffer size and current offset
Added the possibility to get current offset and the total size of the
buffer.
2020-04-03 17:01:24 +02:00

66 lines
1.9 KiB
C

/* GStreamer
* Copyright (C) 2020 Ognyan Tonchev <ognyan at axis dot com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_BUFFER_MEMORY_H__
#define __GST_BUFFER_MEMORY_H__
#include <gst/gst.h>
G_BEGIN_DECLS
struct _GstBufferMemoryMap
{
/* private datas */
GstBuffer *buf;
GstMemory *mem;
GstMapInfo map;
guint index;
gsize total_size;
/* public datas */
/* data of the currently mapped memory */
const guint8 *data;
guint offset;
/* size of the currently mapped memory */
gsize size;
/* When advancing through the data with gst_buffer_memory_advance_bytes ()
* the data field is also advanced and the size field decreased with the
* corresponding number of bytes. If all the bytes from the currently mapped
* GstMemory have been consumed then a new GstMemory will be mapped and data
* and size fileds will be updated.
* */
};
typedef struct _GstBufferMemoryMap GstBufferMemoryMap;
G_GNUC_INTERNAL
gboolean gst_buffer_memory_map (GstBuffer * buffer, GstBufferMemoryMap * map);
G_GNUC_INTERNAL
gboolean gst_buffer_memory_advance_bytes (GstBufferMemoryMap * map, gsize size);
G_GNUC_INTERNAL
void gst_buffer_memory_unmap (GstBufferMemoryMap * map);
G_END_DECLS
#endif /* __GST_BUFFER_MEMORY_H__ */