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
301
302
303
304
305
306
307
308
309
310
311
312
313
314
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2006-2010 Nokia Corporation
* Copyright (C) 2004-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
*/
typedef enum {
AVDTP_SESSION_STATE_DISCONNECTED,
AVDTP_SESSION_STATE_CONNECTING,
AVDTP_SESSION_STATE_CONNECTED
} avdtp_session_state_t;
struct avdtp;
struct avdtp_server;
struct avdtp_stream;
struct avdtp_local_sep;
struct avdtp_remote_sep;
struct avdtp_error {
uint8_t category;
union {
uint8_t error_code;
int posix_errno;
} err;
};
/* SEP capability categories */
#define AVDTP_MEDIA_TRANSPORT 0x01
#define AVDTP_REPORTING 0x02
#define AVDTP_RECOVERY 0x03
#define AVDTP_CONTENT_PROTECTION 0x04
#define AVDTP_HEADER_COMPRESSION 0x05
#define AVDTP_MULTIPLEXING 0x06
#define AVDTP_MEDIA_CODEC 0x07
#define AVDTP_DELAY_REPORTING 0x08
#define AVDTP_ERRNO 0xff
/* AVDTP error definitions */
#define AVDTP_BAD_HEADER_FORMAT 0x01
#define AVDTP_BAD_LENGTH 0x11
#define AVDTP_BAD_ACP_SEID 0x12
#define AVDTP_SEP_IN_USE 0x13
#define AVDTP_SEP_NOT_IN_USE 0x14
#define AVDTP_BAD_SERV_CATEGORY 0x17
#define AVDTP_BAD_PAYLOAD_FORMAT 0x18
#define AVDTP_NOT_SUPPORTED_COMMAND 0x19
#define AVDTP_INVALID_CAPABILITIES 0x1A
#define AVDTP_BAD_RECOVERY_TYPE 0x22
#define AVDTP_BAD_MEDIA_TRANSPORT_FORMAT 0x23
#define AVDTP_BAD_RECOVERY_FORMAT 0x25
#define AVDTP_BAD_ROHC_FORMAT 0x26
#define AVDTP_BAD_CP_FORMAT 0x27
#define AVDTP_BAD_MULTIPLEXING_FORMAT 0x28
#define AVDTP_UNSUPPORTED_CONFIGURATION 0x29
#define AVDTP_BAD_STATE 0x31
/* SEP types definitions */
#define AVDTP_SEP_TYPE_SOURCE 0x00
#define AVDTP_SEP_TYPE_SINK 0x01
/* Media types definitions */
#define AVDTP_MEDIA_TYPE_AUDIO 0x00
#define AVDTP_MEDIA_TYPE_VIDEO 0x01
#define AVDTP_MEDIA_TYPE_MULTIMEDIA 0x02
typedef enum {
AVDTP_STATE_IDLE,
AVDTP_STATE_CONFIGURED,
AVDTP_STATE_OPEN,
AVDTP_STATE_STREAMING,
AVDTP_STATE_CLOSING,
AVDTP_STATE_ABORTING,
} avdtp_state_t;
struct avdtp_service_capability {
uint8_t category;
uint8_t length;
uint8_t data[0];
} __attribute__ ((packed));
#if __BYTE_ORDER == __LITTLE_ENDIAN
struct avdtp_media_codec_capability {
uint8_t rfa0:4;
uint8_t media_type:4;
uint8_t media_codec_type;
uint8_t data[0];
} __attribute__ ((packed));
#elif __BYTE_ORDER == __BIG_ENDIAN
struct avdtp_media_codec_capability {
uint8_t media_type:4;
uint8_t rfa0:4;
uint8_t media_codec_type;
uint8_t data[0];
} __attribute__ ((packed));
#else
#error "Unknown byte order"
#endif
typedef void (*avdtp_session_state_cb) (struct btd_device *dev,
struct avdtp *session,
avdtp_session_state_t old_state,
avdtp_session_state_t new_state,
void *user_data);
typedef void (*avdtp_stream_state_cb) (struct avdtp_stream *stream,
avdtp_state_t old_state,
avdtp_state_t new_state,
struct avdtp_error *err,
void *user_data);
typedef void (*avdtp_set_configuration_cb) (struct avdtp *session,
struct avdtp_stream *stream,
struct avdtp_error *err);
/* Callbacks for when a reply is received to a command that we sent */
struct avdtp_sep_cfm {
void (*set_configuration) (struct avdtp *session,
struct avdtp_local_sep *lsep,
struct avdtp_stream *stream,
struct avdtp_error *err,
void *user_data);
void (*get_configuration) (struct avdtp *session,
struct avdtp_local_sep *lsep,
struct avdtp_stream *stream,
struct avdtp_error *err,
void *user_data);
void (*open) (struct avdtp *session, struct avdtp_local_sep *lsep,
struct avdtp_stream *stream, struct avdtp_error *err,
void *user_data);
void (*start) (struct avdtp *session, struct avdtp_local_sep *lsep,
struct avdtp_stream *stream, struct avdtp_error *err,
void *user_data);
void (*suspend) (struct avdtp *session, struct avdtp_local_sep *lsep,
struct avdtp_stream *stream,
struct avdtp_error *err, void *user_data);
void (*close) (struct avdtp *session, struct avdtp_local_sep *lsep,
struct avdtp_stream *stream,
struct avdtp_error *err, void *user_data);
void (*abort) (struct avdtp *session, struct avdtp_local_sep *lsep,
struct avdtp_stream *stream,
struct avdtp_error *err, void *user_data);
void (*reconfigure) (struct avdtp *session,
struct avdtp_local_sep *lsep,
struct avdtp_stream *stream,
struct avdtp_error *err, void *user_data);
void (*delay_report) (struct avdtp *session, struct avdtp_local_sep *lsep,
struct avdtp_stream *stream,
struct avdtp_error *err, void *user_data);
};
/* Callbacks for indicating when we received a new command. The return value
* indicates whether the command should be rejected or accepted */
struct avdtp_sep_ind {
gboolean (*match_codec) (struct avdtp *session,
struct avdtp_media_codec_capability *codec,
void *user_data);
gboolean (*get_capability) (struct avdtp *session,
struct avdtp_local_sep *sep,
gboolean get_all,
GSList **caps, uint8_t *err,
void *user_data);
gboolean (*set_configuration) (struct avdtp *session,
struct avdtp_local_sep *lsep,
struct avdtp_stream *stream,
GSList *caps,
avdtp_set_configuration_cb cb,
void *user_data);
gboolean (*get_configuration) (struct avdtp *session,
struct avdtp_local_sep *lsep,
uint8_t *err, void *user_data);
gboolean (*open) (struct avdtp *session, struct avdtp_local_sep *lsep,
struct avdtp_stream *stream, uint8_t *err,
void *user_data);
gboolean (*start) (struct avdtp *session, struct avdtp_local_sep *lsep,
struct avdtp_stream *stream, uint8_t *err,
void *user_data);
gboolean (*suspend) (struct avdtp *session,
struct avdtp_local_sep *sep,
struct avdtp_stream *stream, uint8_t *err,
void *user_data);
gboolean (*close) (struct avdtp *session, struct avdtp_local_sep *sep,
struct avdtp_stream *stream, uint8_t *err,
void *user_data);
void (*abort) (struct avdtp *session, struct avdtp_local_sep *sep,
struct avdtp_stream *stream, uint8_t *err,
void *user_data);
gboolean (*reconfigure) (struct avdtp *session,
struct avdtp_local_sep *lsep,
uint8_t *err, void *user_data);
gboolean (*delayreport) (struct avdtp *session,
struct avdtp_local_sep *lsep,
uint8_t rseid, uint16_t delay,
uint8_t *err, void *user_data);
};
typedef void (*avdtp_discover_cb_t) (struct avdtp *session, GSList *seps,
struct avdtp_error *err, void *user_data);
void avdtp_unref(struct avdtp *session);
struct avdtp *avdtp_ref(struct avdtp *session);
struct avdtp_service_capability *avdtp_service_cap_new(uint8_t category,
void *data, int size);
struct avdtp_remote_sep *avdtp_register_remote_sep(struct avdtp *session,
uint8_t seid,
uint8_t type,
GSList *caps,
bool delay_reporting);
int avdtp_unregister_remote_sep(struct avdtp *session,
struct avdtp_remote_sep *rsep);
typedef void (*avdtp_remote_sep_destroy_t)(void *user_data);
void avdtp_remote_sep_set_destroy(struct avdtp_remote_sep *sep, void *user_data,
avdtp_remote_sep_destroy_t destroy);
uint8_t avdtp_get_seid(struct avdtp_remote_sep *sep);
uint8_t avdtp_get_type(struct avdtp_remote_sep *sep);
struct avdtp_service_capability *avdtp_get_codec(struct avdtp_remote_sep *sep);
bool avdtp_get_delay_reporting(struct avdtp_remote_sep *sep);
int avdtp_discover(struct avdtp *session, avdtp_discover_cb_t cb,
void *user_data);
gboolean avdtp_has_stream(struct avdtp *session, struct avdtp_stream *stream);
unsigned int avdtp_stream_add_cb(struct avdtp *session,
struct avdtp_stream *stream,
avdtp_stream_state_cb cb, void *data);
gboolean avdtp_stream_remove_cb(struct avdtp *session,
struct avdtp_stream *stream,
unsigned int id);
gboolean avdtp_stream_set_transport(struct avdtp_stream *stream, int fd,
size_t imtu, size_t omtu);
gboolean avdtp_stream_get_transport(struct avdtp_stream *stream, int *sock,
uint16_t *imtu, uint16_t *omtu,
GSList **caps);
struct avdtp_service_capability *avdtp_stream_get_codec(
struct avdtp_stream *stream);
gboolean avdtp_stream_has_capabilities(struct avdtp_stream *stream,
GSList *caps);
gboolean avdtp_stream_has_delay_reporting(struct avdtp_stream *stream);
struct avdtp_remote_sep *avdtp_stream_get_remote_sep(
struct avdtp_stream *stream);
unsigned int avdtp_add_state_cb(struct btd_device *dev,
avdtp_session_state_cb cb, void *user_data);
gboolean avdtp_remove_state_cb(unsigned int id);
int avdtp_set_configuration(struct avdtp *session,
struct avdtp_remote_sep *rsep,
struct avdtp_local_sep *lsep,
GSList *caps,
struct avdtp_stream **stream);
int avdtp_get_configuration(struct avdtp *session,
struct avdtp_stream *stream);
int avdtp_open(struct avdtp *session, struct avdtp_stream *stream);
int avdtp_start(struct avdtp *session, struct avdtp_stream *stream);
int avdtp_suspend(struct avdtp *session, struct avdtp_stream *stream);
int avdtp_close(struct avdtp *session, struct avdtp_stream *stream,
gboolean immediate);
int avdtp_abort(struct avdtp *session, struct avdtp_stream *stream);
int avdtp_delay_report(struct avdtp *session, struct avdtp_stream *stream,
uint16_t delay);
struct avdtp_local_sep *avdtp_register_sep(struct queue *lseps,
uint64_t *seid_pool,
uint8_t type,
uint8_t media_type,
uint8_t codec_type,
gboolean delay_reporting,
struct avdtp_sep_ind *ind,
struct avdtp_sep_cfm *cfm,
void *user_data);
/* Find a matching pair of local and remote SEP ID's */
struct avdtp_remote_sep *avdtp_find_remote_sep(struct avdtp *session,
struct avdtp_local_sep *lsep);
int avdtp_unregister_sep(struct queue *lseps, uint64_t *seid_pool,
struct avdtp_local_sep *sep);
avdtp_state_t avdtp_stream_get_state(struct avdtp_stream *stream);
uint8_t avdtp_sep_get_seid(struct avdtp_local_sep *sep);
void avdtp_error_init(struct avdtp_error *err, uint8_t type, int id);
const char *avdtp_strerror(struct avdtp_error *err);
uint8_t avdtp_error_category(struct avdtp_error *err);
int avdtp_error_error_code(struct avdtp_error *err);
int avdtp_error_posix_errno(struct avdtp_error *err);
struct btd_adapter *avdtp_get_adapter(struct avdtp *session);
struct btd_device *avdtp_get_device(struct avdtp *session);
struct avdtp_server *avdtp_get_server(struct avdtp_local_sep *lsep);
struct avdtp *avdtp_new(GIOChannel *chan, struct btd_device *device,
struct queue *lseps);
uint16_t avdtp_get_version(struct avdtp *session);
|
