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121 lines
3.8 KiB
C
121 lines
3.8 KiB
C
/* GStreamer
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* Copyright (C) <2008> Wim Taymans <wim.taymans@gmail.com>
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*
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* gstrdtbuffer.h: various helper functions to manipulate buffers
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* with RDT payload.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __GST_RDTBUFFER_H__
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#define __GST_RDTBUFFER_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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/**
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* GstRDTType:
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* @GST_RDT_TYPE_INVALID:
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* @GST_RDT_TYPE_ASMACTION:
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* @GST_RDT_TYPE_ACK:
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* @GST_RDT_TYPE_RTTREQ:
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* @GST_RDT_TYPE_RTTRESP:
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* @GST_RDT_TYPE_CONGESTION:
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* @GST_RDT_TYPE_STREAMEND:
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* @GST_RDT_TYPE_LATENCY:
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* @GST_RDT_TYPE_INFOREQ:
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* @GST_RDT_TYPE_INFORESP:
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* @GST_RDT_TYPE_AUTOBW:
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*
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* Different RDT packet types.
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*/
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typedef enum
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{
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GST_RDT_TYPE_INVALID = 0xffff,
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GST_RDT_TYPE_ASMACTION = 0xff00,
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GST_RDT_TYPE_BWREPORT = 0xff01,
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GST_RDT_TYPE_ACK = 0xff02,
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GST_RDT_TYPE_RTTREQ = 0xff03,
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GST_RDT_TYPE_RTTRESP = 0xff04,
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GST_RDT_TYPE_CONGESTION = 0xff05,
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GST_RDT_TYPE_STREAMEND = 0xff06,
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GST_RDT_TYPE_REPORT = 0xff07,
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GST_RDT_TYPE_LATENCY = 0xff08,
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GST_RDT_TYPE_INFOREQ = 0xff09,
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GST_RDT_TYPE_INFORESP = 0xff0a,
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GST_RDT_TYPE_AUTOBW = 0xff0b
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} GstRDTType;
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/**
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* GST_RDT_IS_DATA_TYPE:
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* @t: the #GstRDTType to check
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*
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* Check if @t is a data packet type.
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*/
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#define GST_RDT_IS_DATA_TYPE(t) ((t) < 0xff00)
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typedef struct _GstRDTPacket GstRDTPacket;
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/**
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* GstRDTPacket:
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* @buffer: pointer to RDT buffer
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* @offset: offset of packet in buffer data
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*
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* Data structure that points to a packet at @offset in @buffer.
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* The size of the structure is made public to allow stack allocations.
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*/
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struct _GstRDTPacket
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{
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GstBuffer *buffer;
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guint offset;
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/*< private >*/
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GstRDTType type; /* type of current packet */
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guint16 length; /* length of current packet in bytes */
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GstMapInfo map; /* last mapped data */
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};
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/* validate buffers */
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gboolean gst_rdt_buffer_validate_data (guint8 *data, guint len);
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gboolean gst_rdt_buffer_validate (GstBuffer *buffer);
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/* retrieving packets */
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guint gst_rdt_buffer_get_packet_count (GstBuffer *buffer);
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gboolean gst_rdt_buffer_get_first_packet (GstBuffer *buffer, GstRDTPacket *packet);
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gboolean gst_rdt_packet_move_to_next (GstRDTPacket *packet);
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/* working with packets */
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GstRDTType gst_rdt_packet_get_type (GstRDTPacket *packet);
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guint16 gst_rdt_packet_get_length (GstRDTPacket *packet);
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GstBuffer* gst_rdt_packet_to_buffer (GstRDTPacket *packet);
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/* data packets */
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guint16 gst_rdt_packet_data_get_seq (GstRDTPacket *packet);
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guint8 * gst_rdt_packet_data_map (GstRDTPacket *packet, guint *size);
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gboolean gst_rdt_packet_data_unmap (GstRDTPacket *packet);
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guint16 gst_rdt_packet_data_get_stream_id (GstRDTPacket *packet);
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guint32 gst_rdt_packet_data_get_timestamp (GstRDTPacket *packet);
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guint8 gst_rdt_packet_data_get_flags (GstRDTPacket * packet);
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/* utils */
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gint gst_rdt_buffer_compare_seqnum (guint16 seqnum1, guint16 seqnum2);
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G_END_DECLS
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#endif /* __GST_RDTBUFFER_H__ */
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