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Diffstat (limited to 'toxav/toxav.c')
-rw-r--r-- | toxav/toxav.c | 539 |
1 files changed, 539 insertions, 0 deletions
diff --git a/toxav/toxav.c b/toxav/toxav.c new file mode 100644 index 00000000..b40a1c02 --- /dev/null +++ b/toxav/toxav.c | |||
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1 | /** toxav.c | ||
2 | * | ||
3 | * Copyright (C) 2013 Tox project All Rights Reserved. | ||
4 | * | ||
5 | * This file is part of Tox. | ||
6 | * | ||
7 | * Tox is free software: you can redistribute it and/or modify | ||
8 | * it under the terms of the GNU General Public License as published by | ||
9 | * the Free Software Foundation, either version 3 of the License, or | ||
10 | * (at your option) any later version. | ||
11 | * | ||
12 | * Tox is distributed in the hope that it will be useful, | ||
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
15 | * GNU General Public License for more details. | ||
16 | * | ||
17 | * You should have received a copy of the GNU General Public License | ||
18 | * along with Tox. If not, see <http://www.gnu.org/licenses/>. | ||
19 | * | ||
20 | * | ||
21 | * Report bugs/suggestions at #tox-dev @ freenode.net:6667 | ||
22 | */ | ||
23 | |||
24 | #ifdef HAVE_CONFIG_H | ||
25 | #include "config.h" | ||
26 | #endif /* HAVE_CONFIG_H */ | ||
27 | |||
28 | #include "media.h" | ||
29 | #include "rtp.h" | ||
30 | #include "msi.h" | ||
31 | |||
32 | #include <stdlib.h> | ||
33 | #include <string.h> | ||
34 | #include <assert.h> | ||
35 | |||
36 | #include "toxav.h" | ||
37 | |||
38 | #define inline__ inline __attribute__((always_inline)) | ||
39 | |||
40 | static const uint8_t audio_index = 0, video_index = 1; | ||
41 | |||
42 | |||
43 | typedef enum { | ||
44 | ts_closing, | ||
45 | ts_running, | ||
46 | ts_closed | ||
47 | |||
48 | } ThreadState; | ||
49 | |||
50 | typedef struct _ToxAv | ||
51 | { | ||
52 | Messenger* messenger; | ||
53 | |||
54 | MSISession* msi_session; /** Main msi session */ | ||
55 | |||
56 | RTPSession* rtp_sessions[2]; /* Audio is first and video is second */ | ||
57 | |||
58 | struct jitter_buffer* j_buf; | ||
59 | CodecState* cs; | ||
60 | |||
61 | void* agent_handler; | ||
62 | } ToxAv; | ||
63 | |||
64 | /** | ||
65 | * @brief Start new A/V session. There can only be one session at the time. If you register more | ||
66 | * it will result in undefined behaviour. | ||
67 | * | ||
68 | * @param messenger The messenger handle. | ||
69 | * @param useragent The agent handling A/V session (i.e. phone). | ||
70 | * @param ua_name Useragent name. | ||
71 | * @param video_width Width of video frame. | ||
72 | * @param video_height Height of video frame. | ||
73 | * @return ToxAv* | ||
74 | * @retval NULL On error. | ||
75 | */ | ||
76 | ToxAv* toxav_new( Tox* messenger, void* useragent, const char* ua_name , uint16_t video_width, uint16_t video_height) | ||
77 | { | ||
78 | ToxAv* av = calloc ( sizeof(ToxAv), 1); | ||
79 | if (av == NULL) | ||
80 | return NULL; | ||
81 | |||
82 | av->messenger = (Messenger *)messenger; | ||
83 | |||
84 | av->msi_session = msi_init_session(av->messenger, (const unsigned char*) ua_name ); | ||
85 | av->msi_session->agent_handler = av; | ||
86 | |||
87 | av->rtp_sessions[0] = av->rtp_sessions [1] = NULL; | ||
88 | |||
89 | /* NOTE: This should be user defined or? */ | ||
90 | av->j_buf = create_queue(20); | ||
91 | |||
92 | av->cs = codec_init_session(AUDIO_BITRATE, AUDIO_FRAME_DURATION, AUDIO_SAMPLE_RATE, AUDIO_CHANNELS, video_width, video_height, VIDEO_BITRATE); | ||
93 | |||
94 | av->agent_handler = useragent; | ||
95 | |||
96 | return av; | ||
97 | } | ||
98 | |||
99 | /** | ||
100 | * @brief Remove A/V session. | ||
101 | * | ||
102 | * @param av Handler. | ||
103 | * @return void | ||
104 | */ | ||
105 | void toxav_kill ( ToxAv* av ) | ||
106 | { | ||
107 | msi_terminate_session(av->msi_session); | ||
108 | |||
109 | if ( av->rtp_sessions[audio_index] ) { | ||
110 | rtp_terminate_session(av->rtp_sessions[audio_index], av->msi_session->messenger_handle); | ||
111 | } | ||
112 | |||
113 | if ( av->rtp_sessions[video_index] ) { | ||
114 | rtp_terminate_session(av->rtp_sessions[video_index], av->msi_session->messenger_handle); | ||
115 | } | ||
116 | |||
117 | codec_terminate_session(av->cs); | ||
118 | |||
119 | free(av); | ||
120 | } | ||
121 | |||
122 | /** | ||
123 | * @brief Register callback for call state. | ||
124 | * | ||
125 | * @param callback The callback | ||
126 | * @param id One of the ToxAvCallbackID values | ||
127 | * @return void | ||
128 | */ | ||
129 | void toxav_register_callstate_callback ( ToxAVCallback callback, ToxAvCallbackID id ) | ||
130 | { | ||
131 | msi_register_callback((MSICallback)callback, (MSICallbackID) id); | ||
132 | } | ||
133 | |||
134 | /** | ||
135 | * @brief Call user. Use its friend_id. | ||
136 | * | ||
137 | * @param av Handler. | ||
138 | * @param user The user. | ||
139 | * @param call_type Call type. | ||
140 | * @param ringing_seconds Ringing timeout. | ||
141 | * @return int | ||
142 | * @retval 0 Success. | ||
143 | * @retval ToxAvError On error. | ||
144 | */ | ||
145 | int toxav_call (ToxAv* av, int user, ToxAvCallType call_type, int ringing_seconds ) | ||
146 | { | ||
147 | if ( av->msi_session->call ) { | ||
148 | return ErrorAlreadyInCall; | ||
149 | } | ||
150 | |||
151 | return msi_invite(av->msi_session, call_type, ringing_seconds * 1000, user); | ||
152 | } | ||
153 | |||
154 | /** | ||
155 | * @brief Hangup active call. | ||
156 | * | ||
157 | * @param av Handler. | ||
158 | * @return int | ||
159 | * @retval 0 Success. | ||
160 | * @retval ToxAvError On error. | ||
161 | */ | ||
162 | int toxav_hangup ( ToxAv* av ) | ||
163 | { | ||
164 | if ( !av->msi_session->call ) { | ||
165 | return ErrorNoCall; | ||
166 | } | ||
167 | |||
168 | if ( av->msi_session->call->state != call_active ) { | ||
169 | return ErrorInvalidState; | ||
170 | } | ||
171 | |||
172 | return msi_hangup(av->msi_session); | ||
173 | } | ||
174 | |||
175 | /** | ||
176 | * @brief Answer incomming call. | ||
177 | * | ||
178 | * @param av Handler. | ||
179 | * @param call_type Answer with... | ||
180 | * @return int | ||
181 | * @retval 0 Success. | ||
182 | * @retval ToxAvError On error. | ||
183 | */ | ||
184 | int toxav_answer ( ToxAv* av, ToxAvCallType call_type ) | ||
185 | { | ||
186 | if ( !av->msi_session->call ) { | ||
187 | return ErrorNoCall; | ||
188 | } | ||
189 | |||
190 | if ( av->msi_session->call->state != call_starting ) { | ||
191 | return ErrorInvalidState; | ||
192 | } | ||
193 | |||
194 | return msi_answer(av->msi_session, call_type); | ||
195 | } | ||
196 | |||
197 | /** | ||
198 | * @brief Reject incomming call. | ||
199 | * | ||
200 | * @param av Handler. | ||
201 | * @param reason Optional reason. Set NULL if none. | ||
202 | * @return int | ||
203 | * @retval 0 Success. | ||
204 | * @retval ToxAvError On error. | ||
205 | */ | ||
206 | int toxav_reject ( ToxAv* av, const char* reason ) | ||
207 | { | ||
208 | if ( !av->msi_session->call ) { | ||
209 | return ErrorNoCall; | ||
210 | } | ||
211 | |||
212 | if ( av->msi_session->call->state != call_starting ) { | ||
213 | return ErrorInvalidState; | ||
214 | } | ||
215 | |||
216 | return msi_reject(av->msi_session, (const uint8_t*) reason); | ||
217 | } | ||
218 | |||
219 | /** | ||
220 | * @brief Cancel outgoing request. | ||
221 | * | ||
222 | * @param av Handler. | ||
223 | * @param reason Optional reason. | ||
224 | * @return int | ||
225 | * @retval 0 Success. | ||
226 | * @retval ToxAvError On error. | ||
227 | */ | ||
228 | int toxav_cancel ( ToxAv* av, const char* reason ) | ||
229 | { | ||
230 | if ( !av->msi_session->call ) { | ||
231 | return ErrorNoCall; | ||
232 | } | ||
233 | |||
234 | return msi_cancel(av->msi_session, 0, (const uint8_t*)reason); | ||
235 | } | ||
236 | |||
237 | /** | ||
238 | * @brief Terminate transmission. Note that transmission will be terminated without informing remote peer. | ||
239 | * | ||
240 | * @param av Handler. | ||
241 | * @return int | ||
242 | * @retval 0 Success. | ||
243 | * @retval ToxAvError On error. | ||
244 | */ | ||
245 | int toxav_stop_call ( ToxAv* av ) | ||
246 | { | ||
247 | if ( !av->msi_session->call ) { | ||
248 | return ErrorNoCall; | ||
249 | } | ||
250 | |||
251 | return msi_stopcall(av->msi_session); | ||
252 | } | ||
253 | |||
254 | /** | ||
255 | * @brief Must be call before any RTP transmission occurs. | ||
256 | * | ||
257 | * @param av Handler. | ||
258 | * @return int | ||
259 | * @retval 0 Success. | ||
260 | * @retval ToxAvError On error. | ||
261 | */ | ||
262 | int toxav_prepare_transmission ( ToxAv* av ) | ||
263 | { | ||
264 | assert(av->msi_session); | ||
265 | if ( !av->msi_session || !av->msi_session->call ) { | ||
266 | return ErrorNoCall; | ||
267 | } | ||
268 | |||
269 | av->rtp_sessions[audio_index] = rtp_init_session( | ||
270 | type_audio, | ||
271 | av->messenger, | ||
272 | av->msi_session->call->peers[0], | ||
273 | av->msi_session->call->key_peer, | ||
274 | av->msi_session->call->key_local, | ||
275 | av->msi_session->call->nonce_peer, | ||
276 | av->msi_session->call->nonce_local | ||
277 | ); | ||
278 | |||
279 | |||
280 | if ( !av->rtp_sessions[audio_index] ) { | ||
281 | fprintf(stderr, "Error while starting audio RTP session!\n"); | ||
282 | return ErrorStartingAudioRtp; | ||
283 | } | ||
284 | |||
285 | av->rtp_sessions[video_index] = rtp_init_session ( | ||
286 | type_video, | ||
287 | av->messenger, | ||
288 | av->msi_session->call->peers[0], | ||
289 | av->msi_session->call->key_peer, | ||
290 | av->msi_session->call->key_local, | ||
291 | av->msi_session->call->nonce_peer, | ||
292 | av->msi_session->call->nonce_local | ||
293 | ); | ||
294 | |||
295 | |||
296 | if ( !av->rtp_sessions[video_index] ) { | ||
297 | fprintf(stderr, "Error while starting video RTP session!\n"); | ||
298 | return ErrorStartingVideoRtp; | ||
299 | } | ||
300 | |||
301 | return ErrorNone; | ||
302 | } | ||
303 | |||
304 | /** | ||
305 | * @brief Call this at the end of the transmission. | ||
306 | * | ||
307 | * @param av Handler. | ||
308 | * @return int | ||
309 | * @retval 0 Success. | ||
310 | * @retval ToxAvError On error. | ||
311 | */ | ||
312 | int toxav_kill_transmission ( ToxAv* av ) | ||
313 | { | ||
314 | /* Both sessions should be active at any time */ | ||
315 | if ( !av->rtp_sessions[0] || !av->rtp_sessions[0] ) | ||
316 | return ErrorNoTransmission; | ||
317 | |||
318 | |||
319 | if ( -1 == rtp_terminate_session(av->rtp_sessions[audio_index], av->messenger) ) { | ||
320 | fprintf(stderr, "Error while terminating audio RTP session!\n"); | ||
321 | return ErrorTerminatingAudioRtp; | ||
322 | } | ||
323 | |||
324 | if ( -1 == rtp_terminate_session(av->rtp_sessions[video_index], av->messenger) ) { | ||
325 | fprintf(stderr, "Error while terminating video RTP session!\n"); | ||
326 | return ErrorTerminatingVideoRtp; | ||
327 | } | ||
328 | |||
329 | return ErrorNone; | ||
330 | } | ||
331 | |||
332 | |||
333 | /** | ||
334 | * @brief Send RTP payload. | ||
335 | * | ||
336 | * @param av Handler. | ||
337 | * @param type Type of payload. | ||
338 | * @param payload The payload. | ||
339 | * @param length Size of it. | ||
340 | * @return int | ||
341 | * @retval 0 Success. | ||
342 | * @retval -1 Failure. | ||
343 | */ | ||
344 | inline__ int toxav_send_rtp_payload ( ToxAv* av, ToxAvCallType type, const uint8_t* payload, uint16_t length ) | ||
345 | { | ||
346 | if ( av->rtp_sessions[type - TypeAudio] ) | ||
347 | return rtp_send_msg ( av->rtp_sessions[type - TypeAudio], av->msi_session->messenger_handle, payload, length ); | ||
348 | else return -1; | ||
349 | } | ||
350 | |||
351 | /** | ||
352 | * @brief Receive RTP payload. | ||
353 | * | ||
354 | * @param av Handler. | ||
355 | * @param type Type of the payload. | ||
356 | * @param dest Storage. | ||
357 | * @return int | ||
358 | * @retval ToxAvError On Error. | ||
359 | * @retval >=0 Size of received payload. | ||
360 | */ | ||
361 | inline__ int toxav_recv_rtp_payload ( ToxAv* av, ToxAvCallType type, uint8_t* dest ) | ||
362 | { | ||
363 | if ( !dest ) return ErrorInternal; | ||
364 | |||
365 | if ( !av->rtp_sessions[type - TypeAudio] ) return ErrorNoRtpSession; | ||
366 | |||
367 | RTPMessage* message; | ||
368 | |||
369 | if ( type == TypeAudio ) { | ||
370 | |||
371 | do { | ||
372 | message = rtp_recv_msg(av->rtp_sessions[audio_index]); | ||
373 | |||
374 | if (message) { | ||
375 | /* push the packet into the queue */ | ||
376 | queue(av->j_buf, message); | ||
377 | } | ||
378 | } while(message); | ||
379 | |||
380 | int success = 0; | ||
381 | message = dequeue(av->j_buf, &success); | ||
382 | |||
383 | if ( success == 2) return ErrorAudioPacketLost; | ||
384 | } | ||
385 | else { | ||
386 | message = rtp_recv_msg(av->rtp_sessions[video_index]); | ||
387 | } | ||
388 | |||
389 | if ( message ) { | ||
390 | memcpy(dest, message->data, message->length); | ||
391 | |||
392 | int length = message->length; | ||
393 | |||
394 | rtp_free_msg(NULL, message); | ||
395 | |||
396 | return length; | ||
397 | } | ||
398 | |||
399 | return 0; | ||
400 | } | ||
401 | |||
402 | /** | ||
403 | * @brief Receive decoded video packet. | ||
404 | * | ||
405 | * @param av Handler. | ||
406 | * @param output Storage. | ||
407 | * @return int | ||
408 | * @retval 0 Success. | ||
409 | * @retval ToxAvError On Error. | ||
410 | */ | ||
411 | inline__ int toxav_recv_video ( ToxAv* av, vpx_image_t **output) | ||
412 | { | ||
413 | if ( !output ) return ErrorInternal; | ||
414 | uint8_t packet [RTP_PAYLOAD_SIZE]; | ||
415 | int recved_size = 0; | ||
416 | do { | ||
417 | recved_size = toxav_recv_rtp_payload(av, TypeVideo, packet); | ||
418 | if (recved_size > 0) { | ||
419 | printf("decode: %s\n", vpx_codec_err_to_string(vpx_codec_decode(&av->cs->v_decoder, packet, recved_size, NULL, 0))); | ||
420 | } | ||
421 | }while (recved_size > 0); | ||
422 | vpx_codec_iter_t iter = NULL; | ||
423 | vpx_image_t *img; | ||
424 | img = vpx_codec_get_frame(&av->cs->v_decoder, &iter); | ||
425 | if (img == NULL) | ||
426 | return ErrorInternal; | ||
427 | |||
428 | *output = img; | ||
429 | return 0; | ||
430 | } | ||
431 | |||
432 | /** | ||
433 | * @brief Encode and send video packet. | ||
434 | * | ||
435 | * @param av Handler. | ||
436 | * @param input The packet. | ||
437 | * @return int | ||
438 | * @retval 0 Success. | ||
439 | * @retval ToxAvError On error. | ||
440 | */ | ||
441 | inline__ int toxav_send_video ( ToxAv* av, vpx_image_t *input) | ||
442 | { | ||
443 | if (vpx_codec_encode(&av->cs->v_encoder, input, av->cs->frame_counter, 1, 0, MAX_ENCODE_TIME_US) != VPX_CODEC_OK) { | ||
444 | printf("could not encode video frame\n"); | ||
445 | return ErrorInternal; | ||
446 | } | ||
447 | ++av->cs->frame_counter; | ||
448 | |||
449 | vpx_codec_iter_t iter = NULL; | ||
450 | const vpx_codec_cx_pkt_t *pkt; | ||
451 | int sent = 0; | ||
452 | while( (pkt = vpx_codec_get_cx_data(&av->cs->v_encoder, &iter)) ) { | ||
453 | if (pkt->kind == VPX_CODEC_CX_FRAME_PKT) { | ||
454 | if (toxav_send_rtp_payload(av, TypeVideo, pkt->data.frame.buf, pkt->data.frame.sz) != -1) | ||
455 | ++sent; | ||
456 | } | ||
457 | } | ||
458 | if (sent > 0) | ||
459 | return 0; | ||
460 | |||
461 | return ErrorInternal; | ||
462 | } | ||
463 | |||
464 | /** | ||
465 | * @brief Receive decoded audio frame. | ||
466 | * | ||
467 | * @param av Handler. | ||
468 | * @param frame_size ... | ||
469 | * @param dest Destination of the packet. Make sure it has enough space for | ||
470 | * RTP_PAYLOAD_SIZE bytes. | ||
471 | * @return int | ||
472 | * @retval >=0 Size of received packet. | ||
473 | * @retval ToxAvError On error. | ||
474 | */ | ||
475 | inline__ int toxav_recv_audio ( ToxAv* av, int frame_size, int16_t* dest ) | ||
476 | { | ||
477 | if ( !dest ) return ErrorInternal; | ||
478 | uint8_t packet [RTP_PAYLOAD_SIZE]; | ||
479 | |||
480 | int recved_size = toxav_recv_rtp_payload(av, TypeAudio, packet); | ||
481 | |||
482 | if ( recved_size == ErrorAudioPacketLost ) { | ||
483 | printf("Lost packet\n"); | ||
484 | return opus_decode(av->cs->audio_decoder, NULL, 0, dest, frame_size, 1); | ||
485 | } else if ( recved_size ){ | ||
486 | return opus_decode(av->cs->audio_decoder, packet, recved_size, dest, frame_size, 0); | ||
487 | } else { | ||
488 | return 0; /* Nothing received */ | ||
489 | } | ||
490 | } | ||
491 | |||
492 | /** | ||
493 | * @brief Encode and send audio frame. | ||
494 | * | ||
495 | * @param av Handler. | ||
496 | * @param frame The frame. | ||
497 | * @param frame_size It's size. | ||
498 | * @return int | ||
499 | * @retval 0 Success. | ||
500 | * @retval ToxAvError On error. | ||
501 | */ | ||
502 | inline__ int toxav_send_audio ( ToxAv* av, const int16_t* frame, int frame_size) | ||
503 | { | ||
504 | uint8_t temp_data[RTP_PAYLOAD_SIZE]; | ||
505 | int32_t ret = opus_encode(av->cs->audio_encoder, frame, frame_size, temp_data, sizeof(temp_data)); | ||
506 | if (ret <= 0) | ||
507 | return ErrorInternal; | ||
508 | |||
509 | return toxav_send_rtp_payload(av, TypeAudio, temp_data, ret); | ||
510 | } | ||
511 | |||
512 | /** | ||
513 | * @brief Get peer transmission type. It can either be audio or video. | ||
514 | * | ||
515 | * @param av Handler. | ||
516 | * @param peer The peer | ||
517 | * @return int | ||
518 | * @retval ToxAvCallType On success. | ||
519 | * @retval ToxAvError On error. | ||
520 | */ | ||
521 | int toxav_get_peer_transmission_type ( ToxAv* av, int peer ) | ||
522 | { | ||
523 | assert(av->msi_session); | ||
524 | if ( peer < 0 || !av->msi_session->call || av->msi_session->call->peer_count <= peer ) | ||
525 | return ErrorInternal; | ||
526 | |||
527 | return av->msi_session->call->type_peer[peer]; | ||
528 | } | ||
529 | |||
530 | /** | ||
531 | * @brief Get reference to an object that is handling av session. | ||
532 | * | ||
533 | * @param av Handler. | ||
534 | * @return void* | ||
535 | */ | ||
536 | void* toxav_get_agent_handler ( ToxAv* av ) | ||
537 | { | ||
538 | return av->agent_handler; | ||
539 | } | ||