mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-29 21:21:12 +00:00
103 lines
3.1 KiB
C
103 lines
3.1 KiB
C
/* GStreamer
|
|
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
|
* Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
|
|
*
|
|
* dataprotocol.h: Functions implementing the GStreamer Data Protocol
|
|
*
|
|
* 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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifdef GST_ENABLE_NEW
|
|
#ifndef __GST_DATA_PROTOCOL_H__
|
|
#define __GST_DATA_PROTOCOL_H__
|
|
|
|
#include <gst/gstdata.h>
|
|
#include <gst/gstbuffer.h>
|
|
#include <gst/gstevent.h>
|
|
#include <gst/gstcaps.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
/* GStreamer Data Protocol Version */
|
|
#define GST_DP_VERSION_MAJOR 0
|
|
#define GST_DP_VERSION_MINOR 1
|
|
|
|
#define GST_DP_HEADER_LENGTH 60 /* header size in bytes */
|
|
|
|
|
|
/* header flags */
|
|
typedef enum {
|
|
GST_DP_HEADER_FLAG_NONE = 0,
|
|
GST_DP_HEADER_FLAG_CRC_HEADER = (1 << 0),
|
|
GST_DP_HEADER_FLAG_CRC_PAYLOAD = (1 << 1),
|
|
GST_DP_HEADER_FLAG_CRC = (1 << 1) | (1 <<0),
|
|
} GstDPHeaderFlag;
|
|
|
|
/* payload types */
|
|
typedef enum {
|
|
GST_DP_PAYLOAD_NONE = 0,
|
|
GST_DP_PAYLOAD_BUFFER,
|
|
GST_DP_PAYLOAD_CAPS,
|
|
GST_DP_PAYLOAD_EVENT_NONE = 64,
|
|
} GstDPPayloadType;
|
|
|
|
/* payload information from header */
|
|
guint32 gst_dp_header_payload_length (const guint8 * header);
|
|
GstDPPayloadType
|
|
gst_dp_header_payload_type (const guint8 * header);
|
|
|
|
/* converting from GstBuffer/GstEvent/GstCaps */
|
|
gboolean gst_dp_header_from_buffer (const GstBuffer * buffer,
|
|
GstDPHeaderFlag flags,
|
|
guint * length,
|
|
guint8 ** header);
|
|
gboolean gst_dp_packet_from_caps (const GstCaps * caps,
|
|
GstDPHeaderFlag flags,
|
|
guint * length,
|
|
guint8 ** header,
|
|
guint8 ** payload);
|
|
gboolean gst_dp_packet_from_event (const GstEvent * event,
|
|
GstDPHeaderFlag flags,
|
|
guint * length,
|
|
guint8 ** header,
|
|
guint8 ** payload);
|
|
|
|
|
|
/* converting to GstBuffer/GstEvent/GstCaps */
|
|
GstBuffer * gst_dp_buffer_from_header (guint header_length,
|
|
const guint8 * header);
|
|
GstCaps * gst_dp_caps_from_packet (guint header_length,
|
|
const guint8 * header,
|
|
const guint8 * payload);
|
|
GstEvent * gst_dp_event_from_packet (guint header_length,
|
|
const guint8 * header,
|
|
const guint8 * payload);
|
|
|
|
/* validation */
|
|
gboolean gst_dp_validate_header (guint header_length,
|
|
const guint8 * header);
|
|
gboolean gst_dp_validate_payload (guint header_length,
|
|
const guint8 * header,
|
|
const guint8 * payload);
|
|
gboolean gst_dp_validate_packet (guint header_length,
|
|
const guint8 * header,
|
|
const guint8 * payload);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_DATA_PROTOCOL_H__ */
|
|
#endif /* GST_ENABLE_NEW */
|
|
|