/* GStreamer
 * Copyright (C) <2005> Philippe Khalaf <burger@speedy.org>
 *               <2005> Wim Taymans <wim@fluendo.com>
 *
 * gstrtpbuffer.h: various helper functions to manipulate buffers
 *     with RTP 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., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */

#ifndef __GST_RTPBUFFER_H__
#define __GST_RTPBUFFER_H__

#include <gst/gst.h>

G_BEGIN_DECLS

#define GST_RTP_VERSION 2

typedef enum
{
  /* Audio: */
  GST_RTP_PAYLOAD_PCMU = 0,             /* ITU-T G.711. mu-law audio (RFC 3551) */
  GST_RTP_PAYLOAD_GSM = 3,
  GST_RTP_PAYLOAD_PCMA = 8,             /* ITU-T G.711 A-law audio (RFC 3551) */
  GST_RTP_PAYLOAD_L16_STEREO = 10,
  GST_RTP_PAYLOAD_L16_MONO = 11,
  GST_RTP_PAYLOAD_MPA = 14,             /* Audio MPEG 1-3 */
  GST_RTP_PAYLOAD_G723_63 = 16,         /* Not standard */
  GST_RTP_PAYLOAD_G723_53 = 17,         /* Not standard */
  GST_RTP_PAYLOAD_TS48 = 18,            /* Not standard */
  GST_RTP_PAYLOAD_TS41 = 19,            /* Not standard */
  GST_RTP_PAYLOAD_G728 = 20,            /* Not standard */
  GST_RTP_PAYLOAD_G729 = 21,            /* Not standard */

  /* Video: */
  GST_RTP_PAYLOAD_MPV = 32,             /* Video MPEG 1 & 2 */
  GST_RTP_PAYLOAD_H263 = 34,

  /* BOTH */
} GstRTPPayload;

/* creating buffers */
GstBuffer*	gst_rtpbuffer_new		(void);
void		gst_rtpbuffer_allocate_data	(GstBuffer *buffer, guint payload_len, 
						 guint8 pad_len, guint8 csrc_count);

GstBuffer*	gst_rtpbuffer_new_take_data	(gpointer data, guint len);
GstBuffer*	gst_rtpbuffer_new_copy_data	(gpointer data, guint len);
GstBuffer*	gst_rtpbuffer_new_allocate	(guint payload_len, guint8 pad_len, guint8 csrc_count);
GstBuffer*	gst_rtpbuffer_new_allocate_len	(guint packet_len, guint8 pad_len, guint8 csrc_count);

guint		gst_rtpbuffer_calc_header_len	(guint8 csrc_count);
guint		gst_rtpbuffer_calc_packet_len	(guint payload_len, guint8 pad_len, guint8 csrc_count);
guint		gst_rtpbuffer_calc_payload_len	(guint packet_len, guint8 pad_len, guint8 csrc_count);

gboolean 	gst_rtpbuffer_validate_data	(guint8 *data, guint len);
gboolean 	gst_rtpbuffer_validate		(GstBuffer *buffer);

void 		gst_rtpbuffer_set_packet_len	(GstBuffer *buffer, guint len);
guint 		gst_rtpbuffer_get_packet_len	(GstBuffer *buffer);

guint8 		gst_rtpbuffer_get_version	(GstBuffer *buffer);
void 		gst_rtpbuffer_set_version	(GstBuffer *buffer, guint8 version);

gboolean 	gst_rtpbuffer_get_padding	(GstBuffer *buffer);
void 		gst_rtpbuffer_set_padding	(GstBuffer *buffer, gboolean padding);
void 		gst_rtpbuffer_pad_to		(GstBuffer *buffer, guint len);

gboolean	gst_rtpbuffer_get_extension	(GstBuffer *buffer);
void 		gst_rtpbuffer_set_extension	(GstBuffer *buffer, gboolean extension);

guint32 	gst_rtpbuffer_get_ssrc		(GstBuffer *buffer);
void 		gst_rtpbuffer_set_ssrc		(GstBuffer *buffer, guint32 ssrc);

guint8 		gst_rtpbuffer_get_csrc_count	(GstBuffer *buffer);
guint32 	gst_rtpbuffer_get_csrc		(GstBuffer *buffer, guint8 idx);
void	 	gst_rtpbuffer_set_csrc		(GstBuffer *buffer, guint8 idx, guint32 csrc);

gboolean	gst_rtpbuffer_get_marker	(GstBuffer *buffer);
void 		gst_rtpbuffer_set_marker	(GstBuffer *buffer, gboolean marker);

guint8 		gst_rtpbuffer_get_payload_type	(GstBuffer *buffer);
void 		gst_rtpbuffer_set_payload_type	(GstBuffer *buffer, guint8 payload_type);

guint16 	gst_rtpbuffer_get_seq		(GstBuffer *buffer);
void 		gst_rtpbuffer_set_seq		(GstBuffer *buffer, guint16 seq);

guint32 	gst_rtpbuffer_get_timestamp	(GstBuffer *buffer);
void 		gst_rtpbuffer_set_timestamp	(GstBuffer *buffer, guint32 timestamp);

guint 		gst_rtpbuffer_get_payload_len	(GstBuffer *buffer);
gpointer 	gst_rtpbuffer_get_payload	(GstBuffer *buffer);

G_END_DECLS

#endif /* __GST_RTPBUFFER_H__ */