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/* GStreamer
* Copyright (C) <2008> Wim Taymans <wim.taymans@gmail.com>
*
* gstrdtbuffer.h: various helper functions to manipulate buffers
* with RDT payload.
*
* 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_RDTBUFFER_H__
#define __GST_RDTBUFFER_H__
#include <gst/gst.h>
G_BEGIN_DECLS
/**
* GstRDTType:
* @GST_RDT_TYPE_INVALID:
* @GST_RDT_TYPE_ASMACTION:
* @GST_RDT_TYPE_ACK:
* @GST_RDT_TYPE_RTTREQ:
* @GST_RDT_TYPE_RTTRESP:
* @GST_RDT_TYPE_CONGESTION:
* @GST_RDT_TYPE_STREAMEND:
* @GST_RDT_TYPE_LATENCY:
* @GST_RDT_TYPE_INFOREQ:
* @GST_RDT_TYPE_INFORESP:
* @GST_RDT_TYPE_AUTOBW:
*
* Different RDT packet types.
*/
typedef enum
{
GST_RDT_TYPE_INVALID = 0xffff,
GST_RDT_TYPE_ASMACTION = 0xff00,
GST_RDT_TYPE_BWREPORT = 0xff01,
GST_RDT_TYPE_ACK = 0xff02,
GST_RDT_TYPE_RTTREQ = 0xff03,
GST_RDT_TYPE_RTTRESP = 0xff04,
GST_RDT_TYPE_CONGESTION = 0xff05,
GST_RDT_TYPE_STREAMEND = 0xff06,
GST_RDT_TYPE_REPORT = 0xff07,
GST_RDT_TYPE_LATENCY = 0xff08,
GST_RDT_TYPE_INFOREQ = 0xff09,
GST_RDT_TYPE_INFORESP = 0xff0a,
GST_RDT_TYPE_AUTOBW = 0xff0b
} GstRDTType;
/**
* GST_RDT_IS_DATA_TYPE:
* @t: the #GstRDTType to check
*
* Check if @t is a data packet type.
*/
#define GST_RDT_IS_DATA_TYPE(t) ((t) < 0xff00)
typedef struct _GstRDTPacket GstRDTPacket;
/**
* GstRDTPacket:
* @buffer: pointer to RDT buffer
* @offset: offset of packet in buffer data
*
* Data structure that points to a packet at @offset in @buffer.
* The size of the structure is made public to allow stack allocations.
*/
struct _GstRDTPacket
{
GstBuffer *buffer;
guint offset;
/*< private >*/
GstRDTType type; /* type of current packet */
guint16 length; /* length of current packet in bytes */
GstMapInfo map; /* last mapped data */
};
/* validate buffers */
gboolean gst_rdt_buffer_validate_data (guint8 *data, guint len);
gboolean gst_rdt_buffer_validate (GstBuffer *buffer);
/* retrieving packets */
guint gst_rdt_buffer_get_packet_count (GstBuffer *buffer);
gboolean gst_rdt_buffer_get_first_packet (GstBuffer *buffer, GstRDTPacket *packet);
gboolean gst_rdt_packet_move_to_next (GstRDTPacket *packet);
/* working with packets */
GstRDTType gst_rdt_packet_get_type (GstRDTPacket *packet);
guint16 gst_rdt_packet_get_length (GstRDTPacket *packet);
GstBuffer* gst_rdt_packet_to_buffer (GstRDTPacket *packet);
/* data packets */
guint16 gst_rdt_packet_data_get_seq (GstRDTPacket *packet);
guint8 * gst_rdt_packet_data_map (GstRDTPacket *packet, guint *size);
gboolean gst_rdt_packet_data_unmap (GstRDTPacket *packet);
guint16 gst_rdt_packet_data_get_stream_id (GstRDTPacket *packet);
guint32 gst_rdt_packet_data_get_timestamp (GstRDTPacket *packet);
guint8 gst_rdt_packet_data_get_flags (GstRDTPacket * packet);
/* utils */
gint gst_rdt_buffer_compare_seqnum (guint16 seqnum1, guint16 seqnum2);
G_END_DECLS
#endif /* __GST_RDTBUFFER_H__ */
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