xref: /btstack/src/classic/avdtp_sink.c (revision d4d8445570fbeab6a48c397749444927f1b272ee) 
1 /*
2  * Copyright (C) 2016 BlueKitchen GmbH
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  *
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the copyright holders nor the names of
14  *    contributors may be used to endorse or promote products derived
15  *    from this software without specific prior written permission.
16  * 4. Any redistribution, use, or modification is done solely for
17  *    personal benefit and not for any commercial purpose or for
18  *    monetary gain.
19  *
20  * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
24  * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
27  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
28  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
30  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31  * SUCH DAMAGE.
32  *
33  * Please inquire about commercial licensing options at
34  * [email protected]
35  *
36  */
37 
38 #define __BTSTACK_FILE__ "avdtp_sink.c"
39 
40 
41 #include <stdint.h>
42 #include <stdio.h>
43 #include <stdlib.h>
44 #include <string.h>
45 #include <unistd.h>
46 
47 #include "btstack.h"
48 #include "avdtp.h"
49 #include "avdtp_sink.h"
50 #include "avdtp_util.h"
51 #include "avdtp_initiator.h"
52 #include "avdtp_acceptor.h"
53 
54 static const char * default_avdtp_sink_service_name = "BTstack AVDTP Sink Service";
55 static const char * default_avdtp_sink_service_provider_name = "BTstack AVDTP Sink Service Provider";
56 
57 static avdtp_context_t avdtp_sink_context;
58 
59 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size);
60 
61 //static void (*handle_media_data)(avdtp_stream_endpoint_t * stream_endpoint, uint8_t *packet, uint16_t size);
62 
63 void a2dp_sink_create_sdp_record(uint8_t * service,  uint32_t service_record_handle, uint16_t supported_features, const char * service_name, const char * service_provider_name){
64     uint8_t* attribute;
65     de_create_sequence(service);
66 
67     // 0x0000 "Service Record Handle"
68     de_add_number(service, DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_RECORD_HANDLE);
69     de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle);
70 
71     // 0x0001 "Service Class ID List"
72     de_add_number(service,  DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_SERVICE_CLASS_ID_LIST);
73     attribute = de_push_sequence(service);
74     {
75         de_add_number(attribute, DE_UUID, DE_SIZE_16, AUDIO_SINK_GROUP);
76     }
77     de_pop_sequence(service, attribute);
78 
79     // 0x0004 "Protocol Descriptor List"
80     de_add_number(service,  DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PROTOCOL_DESCRIPTOR_LIST);
81     attribute = de_push_sequence(service);
82     {
83         uint8_t* l2cpProtocol = de_push_sequence(attribute);
84         {
85             de_add_number(l2cpProtocol,  DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_L2CAP);
86             de_add_number(l2cpProtocol,  DE_UINT, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP);
87         }
88         de_pop_sequence(attribute, l2cpProtocol);
89 
90         uint8_t* avProtocol = de_push_sequence(attribute);
91         {
92             de_add_number(avProtocol,  DE_UUID, DE_SIZE_16, BLUETOOTH_PROTOCOL_AVDTP);  // avProtocol_service
93             de_add_number(avProtocol,  DE_UINT, DE_SIZE_16,  0x0103);  // version
94         }
95         de_pop_sequence(attribute, avProtocol);
96     }
97     de_pop_sequence(service, attribute);
98 
99     // 0x0005 "Public Browse Group"
100     de_add_number(service,  DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BROWSE_GROUP_LIST); // public browse group
101     attribute = de_push_sequence(service);
102     {
103         de_add_number(attribute,  DE_UUID, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_PUBLIC_BROWSE_ROOT);
104     }
105     de_pop_sequence(service, attribute);
106 
107     // 0x0009 "Bluetooth Profile Descriptor List"
108     de_add_number(service,  DE_UINT, DE_SIZE_16, BLUETOOTH_ATTRIBUTE_BLUETOOTH_PROFILE_DESCRIPTOR_LIST);
109     attribute = de_push_sequence(service);
110     {
111         uint8_t *a2dProfile = de_push_sequence(attribute);
112         {
113             de_add_number(a2dProfile,  DE_UUID, DE_SIZE_16, ADVANCED_AUDIO_DISTRIBUTION);
114             de_add_number(a2dProfile,  DE_UINT, DE_SIZE_16, 0x0103);
115         }
116         de_pop_sequence(attribute, a2dProfile);
117     }
118     de_pop_sequence(service, attribute);
119 
120 
121     // 0x0100 "Service Name"
122     de_add_number(service,  DE_UINT, DE_SIZE_16, 0x0100);
123     if (service_name){
124         de_add_data(service,  DE_STRING, strlen(service_name), (uint8_t *) service_name);
125     } else {
126         de_add_data(service,  DE_STRING, strlen(default_avdtp_sink_service_name), (uint8_t *) default_avdtp_sink_service_name);
127     }
128 
129     // 0x0100 "Provider Name"
130     de_add_number(service,  DE_UINT, DE_SIZE_16, 0x0102);
131     if (service_provider_name){
132         de_add_data(service,  DE_STRING, strlen(service_provider_name), (uint8_t *) service_provider_name);
133     } else {
134         de_add_data(service,  DE_STRING, strlen(default_avdtp_sink_service_provider_name), (uint8_t *) default_avdtp_sink_service_provider_name);
135     }
136 
137     // 0x0311 "Supported Features"
138     de_add_number(service, DE_UINT, DE_SIZE_16, 0x0311);
139     de_add_number(service, DE_UINT, DE_SIZE_16, supported_features);
140 }
141 
142 
143 void avdtp_sink_register_media_transport_category(uint8_t seid){
144     avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(seid, &avdtp_sink_context);
145     avdtp_register_media_transport_category(stream_endpoint);
146 }
147 
148 void avdtp_sink_register_reporting_category(uint8_t seid){
149     avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(seid, &avdtp_sink_context);
150     avdtp_register_reporting_category(stream_endpoint);
151 }
152 
153 void avdtp_sink_register_delay_reporting_category(uint8_t seid){
154     avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(seid, &avdtp_sink_context);
155     avdtp_register_delay_reporting_category(stream_endpoint);
156 }
157 
158 void avdtp_sink_register_recovery_category(uint8_t seid, uint8_t maximum_recovery_window_size, uint8_t maximum_number_media_packets){
159     avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(seid, &avdtp_sink_context);
160     avdtp_register_recovery_category(stream_endpoint, maximum_recovery_window_size, maximum_number_media_packets);
161 }
162 
163 void avdtp_sink_register_content_protection_category(uint8_t seid, uint16_t cp_type, const uint8_t * cp_type_value, uint8_t cp_type_value_len){
164     avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(seid, &avdtp_sink_context);
165     avdtp_register_content_protection_category(stream_endpoint, cp_type, cp_type_value, cp_type_value_len);
166 }
167 
168 void avdtp_sink_register_header_compression_category(uint8_t seid, uint8_t back_ch, uint8_t media, uint8_t recovery){
169     avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(seid, &avdtp_sink_context);
170     avdtp_register_header_compression_category(stream_endpoint, back_ch, media, recovery);
171 }
172 
173 void avdtp_sink_register_media_codec_category(uint8_t seid, avdtp_media_type_t media_type, avdtp_media_codec_type_t media_codec_type, const uint8_t * media_codec_info, uint16_t media_codec_info_len){
174     avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(seid, &avdtp_sink_context);
175     avdtp_register_media_codec_category(stream_endpoint, media_type, media_codec_type, media_codec_info, media_codec_info_len);
176 }
177 
178 void avdtp_sink_register_multiplexing_category(uint8_t seid, uint8_t fragmentation){
179     avdtp_stream_endpoint_t * stream_endpoint = avdtp_stream_endpoint_for_seid(seid, &avdtp_sink_context);
180     avdtp_register_multiplexing_category(stream_endpoint, fragmentation);
181 }
182 
183 // // media, reporting. recovery
184 // void avdtp_sink_register_media_transport_identifier_for_multiplexing_category(uint8_t seid, uint8_t fragmentation){
185 
186 // }
187 
188 
189 /* END: tracking can send now requests pro l2cap cid */
190 // TODO remove
191 
192 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
193     avdtp_packet_handler(packet_type, channel, packet, size, &avdtp_sink_context);
194 }
195 
196 // TODO: find out which security level is needed, and replace LEVEL_0 in avdtp_sink_init
197 void avdtp_sink_init(void){
198     avdtp_sink_context.stream_endpoints = NULL;
199     avdtp_sink_context.connections = NULL;
200     avdtp_sink_context.stream_endpoints_id_counter = 0;
201     // TODO: assign dummy  handlers;
202 
203     l2cap_register_service(&packet_handler, BLUETOOTH_PROTOCOL_AVDTP, 0xffff, LEVEL_0);
204 }
205 
206 avdtp_stream_endpoint_t * avdtp_sink_create_stream_endpoint(avdtp_sep_type_t sep_type, avdtp_media_type_t media_type){
207     return avdtp_create_stream_endpoint(sep_type, media_type, &avdtp_sink_context);
208 }
209 
210 void avdtp_sink_register_media_handler(void (*callback)(avdtp_stream_endpoint_t * stream_endpoint, uint8_t *packet, uint16_t size)){
211     if (callback == NULL){
212         log_error("avdtp_sink_register_media_handler called with NULL callback");
213         return;
214     }
215     avdtp_sink_context.handle_media_data = callback;
216 }
217 
218 void avdtp_sink_register_packet_handler(btstack_packet_handler_t callback){
219     if (callback == NULL){
220         log_error("avdtp_sink_register_packet_handler called with NULL callback");
221         return;
222     }
223     avdtp_sink_context.avdtp_callback = callback;
224 }
225 
226 void avdtp_sink_connect(bd_addr_t bd_addr){
227     avdtp_connection_t * connection = avdtp_connection_for_bd_addr(bd_addr, &avdtp_sink_context);
228     if (!connection){
229         connection = avdtp_create_connection(bd_addr, &avdtp_sink_context);
230     }
231     if (connection->state != AVDTP_SIGNALING_CONNECTION_IDLE) return;
232     connection->state = AVDTP_SIGNALING_CONNECTION_W4_L2CAP_CONNECTED;
233     l2cap_create_channel(packet_handler, connection->remote_addr, BLUETOOTH_PROTOCOL_AVDTP, 0xffff, NULL);
234 }
235 
236 void avdtp_sink_disconnect(uint16_t con_handle){
237     avdtp_disconnect(con_handle, &avdtp_sink_context);
238 }
239 
240 void avdtp_sink_open_stream(uint16_t con_handle, uint8_t acp_seid){
241     avdtp_open_stream(con_handle, acp_seid, &avdtp_sink_context);
242 }
243 
244 void avdtp_sink_start_stream(uint16_t con_handle, uint8_t acp_seid){
245     avdtp_start_stream(con_handle, acp_seid, &avdtp_sink_context);
246 }
247 
248 void avdtp_sink_stop_stream(uint16_t con_handle, uint8_t acp_seid){
249     avdtp_stop_stream(con_handle, acp_seid, &avdtp_sink_context);
250 }
251 
252 void avdtp_sink_abort_stream(uint16_t con_handle, uint8_t acp_seid){
253     avdtp_abort_stream(con_handle, acp_seid, &avdtp_sink_context);
254 }
255 
256 void avdtp_sink_discover_stream_endpoints(uint16_t con_handle){
257     avdtp_discover_stream_endpoints(con_handle, &avdtp_sink_context);
258 }
259 
260 void avdtp_sink_get_capabilities(uint16_t con_handle, uint8_t acp_seid){
261     avdtp_get_capabilities(con_handle, acp_seid, &avdtp_sink_context);
262 }
263 
264 void avdtp_sink_get_all_capabilities(uint16_t con_handle, uint8_t acp_seid){
265     avdtp_get_all_capabilities(con_handle, acp_seid, &avdtp_sink_context);
266 }
267 
268 void avdtp_sink_get_configuration(uint16_t con_handle, uint8_t acp_seid){
269     avdtp_get_configuration(con_handle, acp_seid, &avdtp_sink_context);
270 }
271 
272 void avdtp_sink_set_configuration(uint16_t con_handle, uint8_t int_seid, uint8_t acp_seid, uint16_t configured_services_bitmap, avdtp_capabilities_t configuration){
273     avdtp_set_configuration(con_handle, int_seid, acp_seid, configured_services_bitmap, configuration, &avdtp_sink_context);
274 }
275 
276 void avdtp_sink_reconfigure(uint16_t con_handle, uint8_t acp_seid, uint16_t configured_services_bitmap, avdtp_capabilities_t configuration){
277     avdtp_reconfigure(con_handle, acp_seid, configured_services_bitmap, configuration, &avdtp_sink_context);
278 }
279 
280 void avdtp_sink_suspend(uint16_t con_handle, uint8_t acp_seid){
281     avdtp_suspend(con_handle, acp_seid, &avdtp_sink_context);
282 }