This file is indexed.

/usr/include/gstreamer-0.10/gst/rtp/gstrtcpbuffer.h is in libgstreamer-plugins-base0.10-dev 0.10.36-1.1ubuntu2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
/* GStreamer
 * Copyright (C) <2007> Wim Taymans <wim@fluendo.com>
 *
 * gstrtcpbuffer.h: various helper functions to manipulate buffers
 *     with RTCP 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_RTCPBUFFER_H__
#define __GST_RTCPBUFFER_H__

#include <gst/gst.h>

G_BEGIN_DECLS

/**
 * GST_RTCP_VERSION:
 *
 * The supported RTCP version 2.
 */
#define GST_RTCP_VERSION 2

/** 
 * GstRTCPType:
 * @GST_RTCP_TYPE_INVALID: Invalid type
 * @GST_RTCP_TYPE_SR: Sender report
 * @GST_RTCP_TYPE_RR: Receiver report
 * @GST_RTCP_TYPE_SDES: Source description
 * @GST_RTCP_TYPE_BYE: Goodbye
 * @GST_RTCP_TYPE_APP: Application defined
 * @GST_RTCP_TYPE_RTPFB: Transport layer feedback. Since: 0.10.23
 * @GST_RTCP_TYPE_PSFB: Payload-specific feedback. Since: 0.10.23
 *
 * Different RTCP packet types.
 */
typedef enum
{
  GST_RTCP_TYPE_INVALID = 0,
  GST_RTCP_TYPE_SR      = 200,
  GST_RTCP_TYPE_RR      = 201,
  GST_RTCP_TYPE_SDES    = 202,
  GST_RTCP_TYPE_BYE     = 203,
  GST_RTCP_TYPE_APP     = 204,
  GST_RTCP_TYPE_RTPFB   = 205,
  GST_RTCP_TYPE_PSFB    = 206
} GstRTCPType;

/**
 * GstRTCPFBType:
 * @GST_RTCP_FB_TYPE_INVALID: Invalid type
 * @GST_RTCP_RTPFB_TYPE_NACK: Generic NACK
 * @GST_RTCP_RTPFB_TYPE_TMMBR: Temporary Maximum Media Stream Bit Rate Request
 * @GST_RTCP_RTPFB_TYPE_TMMBN: Temporary Maximum Media Stream Bit Rate
 *    Notification
 * @GST_RTCP_PSFB_TYPE_PLI: Picture Loss Indication
 * @GST_RTCP_PSFB_TYPE_SLI: Slice Loss Indication
 * @GST_RTCP_PSFB_TYPE_RPSI: Reference Picture Selection Indication
 * @GST_RTCP_PSFB_TYPE_AFB: Application layer Feedback
 * @GST_RTCP_PSFB_TYPE_FIR: Full Intra Request Command
 * @GST_RTCP_PSFB_TYPE_TSTR: Temporal-Spatial Trade-off Request
 * @GST_RTCP_PSFB_TYPE_TSTN: Temporal-Spatial Trade-off Notification
 * @GST_RTCP_PSFB_TYPE_VBCN: Video Back Channel Message
 *
 * Different types of feedback messages.
 *
 * Since: 0.10.23
 */
typedef enum
{
  /* generic */
  GST_RTCP_FB_TYPE_INVALID    = 0,
  /* RTPFB types */
  GST_RTCP_RTPFB_TYPE_NACK    = 1,
  /* RTPFB types assigned in RFC 5104 */
  GST_RTCP_RTPFB_TYPE_TMMBR   = 3,
  GST_RTCP_RTPFB_TYPE_TMMBN   = 4,
  /* PSFB types */
  GST_RTCP_PSFB_TYPE_PLI      = 1,
  GST_RTCP_PSFB_TYPE_SLI      = 2,
  GST_RTCP_PSFB_TYPE_RPSI     = 3,
  GST_RTCP_PSFB_TYPE_AFB      = 15,
  /* PSFB types assigned in RFC 5104 */
  GST_RTCP_PSFB_TYPE_FIR      = 4,
  GST_RTCP_PSFB_TYPE_TSTR     = 5,
  GST_RTCP_PSFB_TYPE_TSTN     = 6,
  GST_RTCP_PSFB_TYPE_VBCN     = 7,
} GstRTCPFBType;

/** 
 * GstRTCPSDESType:
 * @GST_RTCP_SDES_INVALID: Invalid SDES entry
 * @GST_RTCP_SDES_END: End of SDES list
 * @GST_RTCP_SDES_CNAME: Canonical name
 * @GST_RTCP_SDES_NAME: User name
 * @GST_RTCP_SDES_EMAIL: User's electronic mail address
 * @GST_RTCP_SDES_PHONE: User's phone number
 * @GST_RTCP_SDES_LOC: Geographic user location
 * @GST_RTCP_SDES_TOOL: Name of application or tool
 * @GST_RTCP_SDES_NOTE: Notice about the source
 * @GST_RTCP_SDES_PRIV: Private extensions
 *
 * Different types of SDES content.
 */
typedef enum 
{
  GST_RTCP_SDES_INVALID  = -1,
  GST_RTCP_SDES_END      = 0,
  GST_RTCP_SDES_CNAME    = 1,
  GST_RTCP_SDES_NAME     = 2,
  GST_RTCP_SDES_EMAIL    = 3,
  GST_RTCP_SDES_PHONE    = 4,
  GST_RTCP_SDES_LOC      = 5,
  GST_RTCP_SDES_TOOL     = 6,
  GST_RTCP_SDES_NOTE     = 7,
  GST_RTCP_SDES_PRIV     = 8
} GstRTCPSDESType;

/**
 * GST_RTCP_MAX_SDES:
 *
 * The maximum text length for an SDES item.
 */
#define GST_RTCP_MAX_SDES 255

/**
 * GST_RTCP_MAX_RB_COUNT:
 *
 * The maximum amount of Receiver report blocks in RR and SR messages.
 */
#define GST_RTCP_MAX_RB_COUNT   31

/**
 * GST_RTCP_MAX_SDES_ITEM_COUNT:
 *
 * The maximum amount of SDES items.
 */
#define GST_RTCP_MAX_SDES_ITEM_COUNT   31

/**
 * GST_RTCP_MAX_BYE_SSRC_COUNT:
 *
 * The maximum amount of SSRCs in a BYE packet.
 */
#define GST_RTCP_MAX_BYE_SSRC_COUNT   31

/**
 * GST_RTCP_VALID_MASK:
 *
 * Mask for version, padding bit and packet type pair
 */
#define GST_RTCP_VALID_MASK (0xc000 | 0x2000 | 0xfe)
/**
 * GST_RTCP_VALID_VALUE:
 *
 * Valid value for the first two bytes of an RTCP packet after applying
 * #GST_RTCP_VALID_MASK to them.
 */
#define GST_RTCP_VALID_VALUE ((GST_RTCP_VERSION << 14) | GST_RTCP_TYPE_SR)

typedef struct _GstRTCPPacket GstRTCPPacket;

/**
 * GstRTCPPacket:
 * @buffer: pointer to RTCP 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 _GstRTCPPacket
{ 
  GstBuffer   *buffer;
  guint        offset;
  
  /*< private >*/
  gboolean     padding;      /* padding field of current packet */
  guint8       count;        /* count field of current packet */
  GstRTCPType  type;         /* type of current packet */
  guint16      length;       /* length of current packet in 32-bits words */

  guint        item_offset;  /* current item offset for navigating SDES */
  guint        item_count;   /* current item count */
  guint        entry_offset; /* current entry offset for navigating SDES items */
};

/* creating buffers */
GstBuffer*      gst_rtcp_buffer_new_take_data     (gpointer data, guint len);
GstBuffer*      gst_rtcp_buffer_new_copy_data     (gpointer data, guint len);

gboolean        gst_rtcp_buffer_validate_data     (guint8 *data, guint len);
gboolean        gst_rtcp_buffer_validate          (GstBuffer *buffer);

GstBuffer*      gst_rtcp_buffer_new               (guint mtu);
void            gst_rtcp_buffer_end               (GstBuffer *buffer);

/* adding/retrieving packets */
guint           gst_rtcp_buffer_get_packet_count  (GstBuffer *buffer);
gboolean        gst_rtcp_buffer_get_first_packet  (GstBuffer *buffer, GstRTCPPacket *packet);
gboolean        gst_rtcp_packet_move_to_next      (GstRTCPPacket *packet);

gboolean        gst_rtcp_buffer_add_packet        (GstBuffer *buffer, GstRTCPType type,
		                                   GstRTCPPacket *packet);
gboolean        gst_rtcp_packet_remove            (GstRTCPPacket *packet);

/* working with packets */
gboolean        gst_rtcp_packet_get_padding       (GstRTCPPacket *packet);
guint8          gst_rtcp_packet_get_count         (GstRTCPPacket *packet);
GstRTCPType     gst_rtcp_packet_get_type          (GstRTCPPacket *packet);
guint16         gst_rtcp_packet_get_length        (GstRTCPPacket *packet);


/* sender reports */ 
void            gst_rtcp_packet_sr_get_sender_info    (GstRTCPPacket *packet, guint32 *ssrc, 
                                                       guint64 *ntptime, guint32 *rtptime, 
						       guint32 *packet_count, guint32 *octet_count);
void            gst_rtcp_packet_sr_set_sender_info    (GstRTCPPacket *packet, guint32 ssrc, 
                                                       guint64 ntptime, guint32 rtptime, 
						       guint32 packet_count, guint32 octet_count);
/* receiver reports */ 
guint32         gst_rtcp_packet_rr_get_ssrc           (GstRTCPPacket *packet);
void            gst_rtcp_packet_rr_set_ssrc           (GstRTCPPacket *packet, guint32 ssrc);


/* report blocks for SR and RR */
guint           gst_rtcp_packet_get_rb_count          (GstRTCPPacket *packet);
void            gst_rtcp_packet_get_rb                (GstRTCPPacket *packet, guint nth, guint32 *ssrc,
		                                       guint8 *fractionlost, gint32 *packetslost,
						       guint32 *exthighestseq, guint32 *jitter,
						       guint32 *lsr, guint32 *dlsr);
gboolean        gst_rtcp_packet_add_rb                (GstRTCPPacket *packet, guint32 ssrc,
		                                       guint8 fractionlost, gint32 packetslost,
						       guint32 exthighestseq, guint32 jitter,
						       guint32 lsr, guint32 dlsr);
void            gst_rtcp_packet_set_rb                (GstRTCPPacket *packet, guint nth, guint32 ssrc,
		                                       guint8 fractionlost, gint32 packetslost,
						       guint32 exthighestseq, guint32 jitter,
						       guint32 lsr, guint32 dlsr);

/* source description packet */
guint           gst_rtcp_packet_sdes_get_item_count   (GstRTCPPacket *packet);
gboolean        gst_rtcp_packet_sdes_first_item       (GstRTCPPacket *packet);
gboolean        gst_rtcp_packet_sdes_next_item        (GstRTCPPacket *packet);
guint32         gst_rtcp_packet_sdes_get_ssrc         (GstRTCPPacket *packet); 
gboolean        gst_rtcp_packet_sdes_first_entry      (GstRTCPPacket *packet);
gboolean        gst_rtcp_packet_sdes_next_entry       (GstRTCPPacket *packet);
gboolean        gst_rtcp_packet_sdes_get_entry        (GstRTCPPacket *packet, 
                                                       GstRTCPSDESType *type, guint8 *len,
						       guint8 **data);
gboolean        gst_rtcp_packet_sdes_copy_entry       (GstRTCPPacket *packet, 
                                                       GstRTCPSDESType *type, guint8 *len,
						       guint8 **data);

gboolean        gst_rtcp_packet_sdes_add_item         (GstRTCPPacket *packet, guint32 ssrc);
gboolean        gst_rtcp_packet_sdes_add_entry        (GstRTCPPacket *packet, GstRTCPSDESType type, 
                                                       guint8 len, const guint8 *data);

/* bye packet */
guint           gst_rtcp_packet_bye_get_ssrc_count    (GstRTCPPacket *packet);
guint32         gst_rtcp_packet_bye_get_nth_ssrc      (GstRTCPPacket *packet, guint nth);
gboolean        gst_rtcp_packet_bye_add_ssrc          (GstRTCPPacket *packet, guint32 ssrc);
gboolean        gst_rtcp_packet_bye_add_ssrcs         (GstRTCPPacket *packet, guint32 *ssrc, guint len);
guint8          gst_rtcp_packet_bye_get_reason_len    (GstRTCPPacket *packet);
gchar*          gst_rtcp_packet_bye_get_reason        (GstRTCPPacket *packet);
gboolean        gst_rtcp_packet_bye_set_reason        (GstRTCPPacket *packet, const gchar *reason);

/* feedback packets */
guint32         gst_rtcp_packet_fb_get_sender_ssrc    (GstRTCPPacket *packet);
void            gst_rtcp_packet_fb_set_sender_ssrc    (GstRTCPPacket *packet, guint32 ssrc);
guint32         gst_rtcp_packet_fb_get_media_ssrc     (GstRTCPPacket *packet);
void            gst_rtcp_packet_fb_set_media_ssrc     (GstRTCPPacket *packet, guint32 ssrc);
GstRTCPFBType   gst_rtcp_packet_fb_get_type           (GstRTCPPacket *packet);
void            gst_rtcp_packet_fb_set_type           (GstRTCPPacket *packet, GstRTCPFBType type);
guint16         gst_rtcp_packet_fb_get_fci_length     (GstRTCPPacket *packet);
gboolean        gst_rtcp_packet_fb_set_fci_length     (GstRTCPPacket *packet, guint16 wordlen);
guint8 *        gst_rtcp_packet_fb_get_fci            (GstRTCPPacket *packet);

/* helper functions */
guint64         gst_rtcp_ntp_to_unix                  (guint64 ntptime);
guint64         gst_rtcp_unix_to_ntp                  (guint64 unixtime);

const gchar *   gst_rtcp_sdes_type_to_name            (GstRTCPSDESType type);
GstRTCPSDESType gst_rtcp_sdes_name_to_type            (const gchar *name);

G_END_DECLS

#endif /* __GST_RTCPBUFFER_H__ */