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e83d0967 RK |
1 | /* |
2 | * This file is part of DisOrder. | |
3 | * Copyright (C) 2007 Richard Kettlewell | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
18 | * USA | |
19 | */ | |
20 | ||
21 | #include <config.h> | |
22 | #include "types.h" | |
23 | ||
24 | #include <getopt.h> | |
25 | #include <stdio.h> | |
26 | #include <stdlib.h> | |
27 | #include <sys/socket.h> | |
28 | #include <sys/types.h> | |
29 | #include <sys/socket.h> | |
30 | #include <netdb.h> | |
31 | #include <pthread.h> | |
0b75463f | 32 | #include <locale.h> |
e83d0967 RK |
33 | |
34 | #include "log.h" | |
35 | #include "mem.h" | |
36 | #include "configuration.h" | |
37 | #include "addr.h" | |
38 | #include "syscalls.h" | |
39 | #include "rtp.h" | |
0b75463f | 40 | #include "defs.h" |
e83d0967 RK |
41 | |
42 | #if HAVE_COREAUDIO_AUDIOHARDWARE_H | |
43 | # include <CoreAudio/AudioHardware.h> | |
44 | #endif | |
0b75463f | 45 | #if API_ALSA |
46 | #include <alsa/asoundlib.h> | |
47 | #endif | |
e83d0967 | 48 | |
0b75463f | 49 | /** @brief RTP socket */ |
e83d0967 RK |
50 | static int rtpfd; |
51 | ||
0b75463f | 52 | /** @brief Output device */ |
53 | static const char *device; | |
54 | ||
55 | /** @brief Maximum samples per packet we'll support | |
56 | * | |
57 | * NB that two channels = two samples in this program. | |
58 | */ | |
59 | #define MAXSAMPLES 2048 | |
60 | ||
61 | /** @brief Minimum buffer size | |
62 | * | |
63 | * We'll stop playing if there's only this many samples in the buffer. */ | |
64 | #define MINBUFFER 8820 | |
65 | ||
66 | /** @brief Maximum sample size | |
67 | * | |
68 | * The maximum supported size (in bytes) of one sample. */ | |
69 | #define MAXSAMPLESIZE 2 | |
70 | ||
e83d0967 | 71 | #define READAHEAD 88200 /* how far to read ahead */ |
0b75463f | 72 | |
e83d0967 RK |
73 | #define MAXBUFFER (3 * 88200) /* maximum buffer contents */ |
74 | ||
0b75463f | 75 | /** @brief Received packet |
76 | * | |
77 | * Packets are recorded in an ordered linked list. */ | |
78 | struct packet { | |
79 | /** @brief Pointer to next packet | |
80 | * The next packet might not be immediately next: if packets are dropped | |
81 | * or mis-ordered there may be gaps at any given moment. */ | |
82 | struct packet *next; | |
83 | /** @brief Number of samples in this packet */ | |
84 | int nsamples; | |
85 | /** @brief Number of samples used from this packet */ | |
86 | int nused; | |
87 | /** @brief Timestamp from RTP packet | |
88 | * | |
89 | * NB that "timestamps" are really sample counters.*/ | |
90 | uint32_t timestamp; | |
e83d0967 | 91 | #if HAVE_COREAUDIO_AUDIOHARDWARE_H |
0b75463f | 92 | /** @brief Converted sample data */ |
93 | float samples_float[MAXSAMPLES]; | |
94 | #else | |
95 | /** @brief Raw sample data */ | |
96 | unsigned char samples_raw[MAXSAMPLES * MAXSAMPLESIZE]; | |
e83d0967 RK |
97 | #endif |
98 | }; | |
99 | ||
0b75463f | 100 | /** @brief Total number of samples available */ |
101 | static unsigned long nsamples; | |
102 | ||
103 | /** @brief Linked list of packets | |
104 | * | |
105 | * In ascending order of timestamp. */ | |
106 | static struct packet *packets; | |
107 | ||
108 | /** @brief Timestamp of next packet to play. | |
109 | * | |
110 | * This is set to the timestamp of the last packet, plus the number of | |
111 | * samples it contained. | |
112 | */ | |
113 | static uint32_t next_timestamp; | |
e83d0967 | 114 | |
0b75463f | 115 | /** @brief Lock protecting @ref packets */ |
e83d0967 | 116 | static pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER; |
e83d0967 | 117 | |
0b75463f | 118 | /** @brief Condition variable signalled whenever @ref packets is changed */ |
119 | static pthread_cond_t cond = PTHREAD_COND_INITIALIZER; | |
e83d0967 RK |
120 | |
121 | static const struct option options[] = { | |
122 | { "help", no_argument, 0, 'h' }, | |
123 | { "version", no_argument, 0, 'V' }, | |
124 | { "debug", no_argument, 0, 'd' }, | |
0b75463f | 125 | { "device", required_argument, 0, 'D' }, |
e83d0967 RK |
126 | { 0, 0, 0, 0 } |
127 | }; | |
128 | ||
0b75463f | 129 | /** @brief Return true iff a < b in sequence-space arithmetic */ |
130 | static inline int lt(const struct packet *a, const struct packet *b) { | |
131 | return (uint32_t)(a->timestamp - b->timestamp) & 0x80000000; | |
e83d0967 RK |
132 | } |
133 | ||
0b75463f | 134 | /** Background thread collecting samples |
135 | * | |
136 | * This function collects samples, perhaps converts them to the target format, | |
137 | * and adds them to the packet list. */ | |
138 | static void *listen_thread(void attribute((unused)) *arg) { | |
139 | struct packet *f = 0, **ff; | |
140 | int n; | |
e83d0967 RK |
141 | union { |
142 | struct rtp_header header; | |
143 | uint8_t bytes[sizeof(uint16_t) * MAXSAMPLES + sizeof (struct rtp_header)]; | |
144 | } packet; | |
145 | const uint16_t *const samples = (uint16_t *)(packet.bytes | |
146 | + sizeof (struct rtp_header)); | |
147 | ||
148 | for(;;) { | |
149 | if(!f) | |
150 | f = xmalloc(sizeof *f); | |
151 | n = read(rtpfd, packet.bytes, sizeof packet.bytes); | |
152 | if(n < 0) { | |
153 | switch(errno) { | |
154 | case EINTR: | |
155 | continue; | |
156 | default: | |
157 | fatal(errno, "error reading from socket"); | |
158 | } | |
159 | } | |
0b75463f | 160 | /* Ignore too-short packets */ |
161 | if((size_t)n <= sizeof (struct rtp_header)) | |
162 | continue; | |
e83d0967 | 163 | /* Convert to target format */ |
0b75463f | 164 | switch(packet.header.mpt & 0x7F) { |
e83d0967 RK |
165 | case 10: |
166 | f->nsamples = (n - sizeof (struct rtp_header)) / sizeof(uint16_t); | |
0b75463f | 167 | #if HAVE_COREAUDIO_AUDIOHARDWARE_H |
168 | /* Convert to what Core Audio expects */ | |
169 | for(n = 0; n < f->nsamples; ++n) | |
170 | f->samples_float[n] = (int16_t)ntohs(samples[n]) * (0.5f / 32767); | |
171 | #else | |
172 | /* ALSA can do any necessary conversion itself (though it might be better | |
173 | * to do any necessary conversion in the background) */ | |
174 | memcpy(f->samples_raw, samples, n - sizeof (struct rtp_header)); | |
175 | #endif | |
e83d0967 RK |
176 | break; |
177 | /* TODO support other RFC3551 media types (when the speaker does) */ | |
178 | default: | |
0b75463f | 179 | fatal(0, "unsupported RTP payload type %d", |
e83d0967 RK |
180 | packet.header.mpt & 0x7F); |
181 | } | |
0b75463f | 182 | f->nused = 0; |
e83d0967 RK |
183 | f->timestamp = ntohl(packet.header.timestamp); |
184 | pthread_mutex_lock(&lock); | |
0b75463f | 185 | /* Stop reading if we've reached the maximum. |
186 | * | |
187 | * This is rather unsatisfactory: it means that if packets get heavily | |
188 | * out of order then we guarantee dropouts. But for now... */ | |
e83d0967 RK |
189 | while(nsamples >= MAXBUFFER) |
190 | pthread_cond_wait(&cond, &lock); | |
0b75463f | 191 | for(ff = &packets; *ff && lt(*ff, f); ff = &(*ff)->next) |
e83d0967 | 192 | ; |
0b75463f | 193 | /* So now either !*ff or *ff >= f */ |
194 | if(*ff && f->timestamp == (*ff)->timestamp) { | |
195 | /* *ff == f; a duplicate. Ideally we avoid the translation step here, | |
196 | * but we'll worry about that another time. */ | |
197 | free(f); | |
198 | } else { | |
199 | f->next = *ff; | |
200 | *ff = f; | |
201 | nsamples += f->nsamples; | |
202 | pthread_cond_broadcast(&cond); | |
203 | } | |
e83d0967 RK |
204 | pthread_mutex_unlock(&lock); |
205 | f = 0; | |
206 | } | |
207 | } | |
208 | ||
209 | #if HAVE_COREAUDIO_AUDIOHARDWARE_H | |
210 | static OSStatus adioproc(AudioDeviceID inDevice, | |
211 | const AudioTimeStamp *inNow, | |
212 | const AudioBufferList *inInputData, | |
213 | const AudioTimeStamp *inInputTime, | |
214 | AudioBufferList *outOutputData, | |
215 | const AudioTimeStamp *inOutputTime, | |
216 | void *inClientData) { | |
217 | UInt32 nbuffers = outOutputData->mNumberBuffers; | |
218 | AudioBuffer *ab = outOutputData->mBuffers; | |
219 | float *samplesOut; /* where to write samples to */ | |
220 | size_t samplesOutLeft; /* space left */ | |
221 | size_t samplesInLeft; | |
222 | size_t samplesToCopy; | |
223 | ||
0b75463f | 224 | pthread_mutex_lock(&lock); |
e83d0967 RK |
225 | samplesOut = ab->data; |
226 | samplesOutLeft = ab->mDataByteSize / sizeof (float); | |
0b75463f | 227 | while(packets && nbuffers > 0) { |
228 | if(packets->used == packets->nsamples) { | |
e83d0967 | 229 | /* TODO if we dropped a packet then we should introduce a gap here */ |
0b75463f | 230 | struct packet *const f = packets; |
231 | packets = f->next; | |
e83d0967 RK |
232 | free(f); |
233 | pthread_cond_broadcast(&cond); | |
234 | continue; | |
235 | } | |
236 | if(samplesOutLeft == 0) { | |
237 | --nbuffers; | |
238 | ++ab; | |
239 | samplesOut = ab->data; | |
240 | samplesOutLeft = ab->mDataByteSize / sizeof (float); | |
241 | continue; | |
242 | } | |
243 | /* Now: (1) there is some data left to read | |
244 | * (2) there is some space to put it */ | |
0b75463f | 245 | samplesInLeft = packets->nsamples - packets->used; |
e83d0967 RK |
246 | samplesToCopy = (samplesInLeft < samplesOutLeft |
247 | ? samplesInLeft : samplesOutLeft); | |
0b75463f | 248 | memcpy(samplesOut, packet->samples + packets->used, samplesToCopy); |
249 | packets->used += samplesToCopy; | |
e83d0967 RK |
250 | samplesOut += samplesToCopy; |
251 | samesOutLeft -= samplesToCopy; | |
252 | } | |
253 | pthread_mutex_unlock(&lock); | |
254 | return 0; | |
255 | } | |
256 | #endif | |
257 | ||
0b75463f | 258 | static void play_rtp(void) { |
259 | pthread_t ltid; | |
e83d0967 RK |
260 | |
261 | /* We receive and convert audio data in a background thread */ | |
0b75463f | 262 | pthread_create(<id, 0, listen_thread, 0); |
e83d0967 | 263 | #if API_ALSA |
0b75463f | 264 | { |
265 | snd_pcm_t *pcm; | |
266 | snd_pcm_hw_params_t *hwparams; | |
267 | snd_pcm_sw_params_t *swparams; | |
268 | /* Only support one format for now */ | |
269 | const int sample_format = SND_PCM_FORMAT_S16_BE; | |
270 | unsigned rate = 44100; | |
271 | const int channels = 2; | |
272 | const int samplesize = channels * sizeof(uint16_t); | |
273 | snd_pcm_uframes_t pcm_bufsize = MAXSAMPLES * samplesize * 3; | |
274 | /* If we can write more than this many samples we'll get a wakeup */ | |
275 | const int avail_min = 256; | |
276 | snd_pcm_sframes_t frames_written; | |
277 | size_t samples_written; | |
278 | int prepared = 1; | |
279 | int err; | |
280 | ||
281 | /* Open ALSA */ | |
282 | if((err = snd_pcm_open(&pcm, | |
283 | device ? device : "default", | |
284 | SND_PCM_STREAM_PLAYBACK, | |
285 | SND_PCM_NONBLOCK))) | |
286 | fatal(0, "error from snd_pcm_open: %d", err); | |
287 | /* Set up 'hardware' parameters */ | |
288 | snd_pcm_hw_params_alloca(&hwparams); | |
289 | if((err = snd_pcm_hw_params_any(pcm, hwparams)) < 0) | |
290 | fatal(0, "error from snd_pcm_hw_params_any: %d", err); | |
291 | if((err = snd_pcm_hw_params_set_access(pcm, hwparams, | |
292 | SND_PCM_ACCESS_RW_INTERLEAVED)) < 0) | |
293 | fatal(0, "error from snd_pcm_hw_params_set_access: %d", err); | |
294 | if((err = snd_pcm_hw_params_set_format(pcm, hwparams, | |
295 | sample_format)) < 0) | |
296 | fatal(0, "error from snd_pcm_hw_params_set_format (%d): %d", | |
297 | sample_format, err); | |
298 | if((err = snd_pcm_hw_params_set_rate_near(pcm, hwparams, &rate, 0)) < 0) | |
299 | fatal(0, "error from snd_pcm_hw_params_set_rate (%d): %d", | |
300 | rate, err); | |
301 | if((err = snd_pcm_hw_params_set_channels(pcm, hwparams, | |
302 | channels)) < 0) | |
303 | fatal(0, "error from snd_pcm_hw_params_set_channels (%d): %d", | |
304 | channels, err); | |
305 | if((err = snd_pcm_hw_params_set_buffer_size_near(pcm, hwparams, | |
306 | &pcm_bufsize)) < 0) | |
307 | fatal(0, "error from snd_pcm_hw_params_set_buffer_size (%d): %d", | |
308 | MAXSAMPLES * samplesize * 3, err); | |
309 | if((err = snd_pcm_hw_params(pcm, hwparams)) < 0) | |
310 | fatal(0, "error calling snd_pcm_hw_params: %d", err); | |
311 | /* Set up 'software' parameters */ | |
312 | snd_pcm_sw_params_alloca(&swparams); | |
313 | if((err = snd_pcm_sw_params_current(pcm, swparams)) < 0) | |
314 | fatal(0, "error calling snd_pcm_sw_params_current: %d", err); | |
315 | if((err = snd_pcm_sw_params_set_avail_min(pcm, swparams, avail_min)) < 0) | |
316 | fatal(0, "error calling snd_pcm_sw_params_set_avail_min %d: %d", | |
317 | avail_min, err); | |
318 | if((err = snd_pcm_sw_params(pcm, swparams)) < 0) | |
319 | fatal(0, "error calling snd_pcm_sw_params: %d", err); | |
320 | ||
321 | /* Ready to go */ | |
322 | ||
323 | pthread_mutex_lock(&lock); | |
324 | for(;;) { | |
325 | /* Wait for the buffer to fill up a bit */ | |
326 | while(nsamples < READAHEAD) | |
327 | pthread_cond_wait(&cond, &lock); | |
328 | if(!prepared) { | |
329 | if((err = snd_pcm_prepare(pcm))) | |
330 | fatal(0, "error calling snd_pcm_prepare: %d", err); | |
331 | prepared = 1; | |
332 | } | |
333 | /* Wait until the buffer empties out */ | |
334 | while(nsamples >= MINBUFFER) { | |
335 | /* Wait for ALSA to ask us for more data */ | |
336 | pthread_mutex_unlock(&lock); | |
337 | snd_pcm_wait(pcm, -1); | |
338 | pthread_mutex_lock(&lock); | |
339 | /* ALSA wants more data */ | |
340 | if(packets && packets->timestamp + packets->nused == next_timestamp) { | |
341 | /* Hooray, we have a packet we can play */ | |
342 | const size_t samples_available = packets->nsamples - packets->nused; | |
343 | const size_t frames_available = samples_available / 2; | |
344 | ||
345 | frames_written = snd_pcm_writei(pcm, | |
346 | packets->samples_raw + packets->nused, | |
347 | frames_available); | |
348 | if(frames_written < 0) | |
349 | fatal(0, "error calling snd_pcm_writei: %d", err); | |
350 | samples_written = frames_written * 2; | |
351 | packets->nused += samples_written; | |
352 | next_timestamp += samples_written; | |
353 | if(packets->nused == packets->nsamples) { | |
354 | struct packet *f = packets; | |
355 | ||
356 | packets = f->next; | |
357 | nsamples -= f->nsamples; | |
358 | free(f); | |
359 | pthread_cond_broadcast(&cond); | |
360 | } | |
361 | } else { | |
362 | /* We don't have anything to play! We'd better play some 0s. */ | |
363 | static const uint16_t zeros[1024]; | |
364 | size_t samples_available = 1024, frames_available; | |
365 | if(packets && next_timestamp + samples_available > packets->timestamp) | |
366 | samples_available = packets->timestamp - next_timestamp; | |
367 | frames_available = samples_available / 2; | |
368 | frames_written = snd_pcm_writei(pcm, | |
369 | zeros, | |
370 | frames_available); | |
371 | if(frames_written < 0) | |
372 | fatal(0, "error calling snd_pcm_writei: %d", err); | |
373 | next_timestamp += samples_written; | |
374 | } | |
375 | } | |
376 | /* We stop playing for a bit until the buffer re-fills */ | |
377 | pthread_mutex_unlock(&lock); | |
378 | if((err = snd_pcm_drain(pcm))) | |
379 | fatal(0, "error calling snd_pcm_drain: %d", err); | |
380 | prepared = 0; | |
381 | pthread_mutex_lock(&lock); | |
382 | } | |
383 | ||
384 | } | |
e83d0967 RK |
385 | #elif HAVE_COREAUDIO_AUDIOHARDWARE_H |
386 | { | |
387 | OSStatus status; | |
388 | UInt32 propertySize; | |
389 | AudioDeviceID adid; | |
390 | AudioStreamBasicDescription asbd; | |
391 | ||
392 | /* If this looks suspiciously like libao's macosx driver there's an | |
393 | * excellent reason for that... */ | |
394 | ||
395 | /* TODO report errors as strings not numbers */ | |
396 | propertySize = sizeof adid; | |
397 | status = AudioHardwareGetProperty(kAudioHardwarePropertyDefaultOutputDevice, | |
398 | &propertySize, &adid); | |
399 | if(status) | |
400 | fatal(0, "AudioHardwareGetProperty: %d", (int)status); | |
401 | if(adid == kAudioDeviceUnknown) | |
402 | fatal(0, "no output device"); | |
403 | propertySize = sizeof asbd; | |
404 | status = AudioDeviceGetProperty(adid, 0, false, | |
405 | kAudioDevicePropertyStreamFormat, | |
406 | &propertySize, &asbd); | |
407 | if(status) | |
408 | fatal(0, "AudioHardwareGetProperty: %d", (int)status); | |
409 | D(("mSampleRate %f", asbd.mSampleRate)); | |
410 | D(("mFormatID %08"PRIx32, asbd.mFormatID)); | |
411 | D(("mFormatFlags %08"PRIx32, asbd.mFormatFlags)); | |
412 | D(("mBytesPerPacket %08"PRIx32, asbd.mBytesPerPacket)); | |
413 | D(("mFramesPerPacket %08"PRIx32, asbd.mFramesPerPacket)); | |
414 | D(("mBytesPerFrame %08"PRIx32, asbd.mBytesPerFrame)); | |
415 | D(("mChannelsPerFrame %08"PRIx32, asbd.mChannelsPerFrame)); | |
416 | D(("mBitsPerChannel %08"PRIx32, asbd.mBitsPerChannel)); | |
417 | D(("mReserved %08"PRIx32, asbd.mReserved)); | |
418 | if(asbd.mFormatID != kAudioFormatLinearPCM) | |
419 | fatal(0, "audio device does not support kAudioFormatLinearPCM"); | |
420 | status = AudioDeviceAddIOProc(adid, adioproc, 0); | |
421 | if(status) | |
422 | fatal(0, "AudioDeviceAddIOProc: %d", (int)status); | |
423 | pthread_mutex_lock(&lock); | |
424 | for(;;) { | |
425 | /* Wait for the buffer to fill up a bit */ | |
426 | while(nsamples < READAHEAD) | |
427 | pthread_cond_wait(&cond, &lock); | |
428 | /* Start playing now */ | |
429 | status = AudioDeviceStart(adid, adioproc); | |
430 | if(status) | |
431 | fatal(0, "AudioDeviceStart: %d", (int)status); | |
432 | /* Wait until the buffer empties out */ | |
433 | while(nsamples >= MINBUFFER) | |
434 | pthread_cond_wait(&cond, &lock); | |
435 | /* Stop playing for a bit until the buffer re-fills */ | |
436 | status = AudioDeviceStop(adid, adioproc); | |
437 | if(status) | |
438 | fatal(0, "AudioDeviceStop: %d", (int)status); | |
439 | /* Go back round */ | |
440 | } | |
441 | } | |
442 | #else | |
443 | # error No known audio API | |
444 | #endif | |
445 | } | |
446 | ||
447 | /* display usage message and terminate */ | |
448 | static void help(void) { | |
449 | xprintf("Usage:\n" | |
450 | " disorder-playrtp [OPTIONS] ADDRESS [PORT]\n" | |
451 | "Options:\n" | |
452 | " --help, -h Display usage message\n" | |
453 | " --version, -V Display version number\n" | |
0b75463f | 454 | " --debug, -d Turn on debugging\n" |
455 | " --device, -D DEVICE Output device\n"); | |
e83d0967 RK |
456 | xfclose(stdout); |
457 | exit(0); | |
458 | } | |
459 | ||
460 | /* display version number and terminate */ | |
461 | static void version(void) { | |
462 | xprintf("disorder-playrtp version %s\n", disorder_version_string); | |
463 | xfclose(stdout); | |
464 | exit(0); | |
465 | } | |
466 | ||
467 | int main(int argc, char **argv) { | |
468 | int n; | |
469 | struct addrinfo *res; | |
470 | struct stringlist sl; | |
0b75463f | 471 | char *sockname; |
e83d0967 | 472 | |
0b75463f | 473 | static const struct addrinfo prefs = { |
e83d0967 RK |
474 | AI_PASSIVE, |
475 | PF_INET, | |
476 | SOCK_DGRAM, | |
477 | IPPROTO_UDP, | |
478 | 0, | |
479 | 0, | |
480 | 0, | |
481 | 0 | |
482 | }; | |
483 | ||
484 | mem_init(); | |
485 | if(!setlocale(LC_CTYPE, "")) fatal(errno, "error calling setlocale"); | |
0b75463f | 486 | while((n = getopt_long(argc, argv, "hVdD", options, 0)) >= 0) { |
e83d0967 RK |
487 | switch(n) { |
488 | case 'h': help(); | |
489 | case 'V': version(); | |
490 | case 'd': debugging = 1; break; | |
0b75463f | 491 | case 'D': device = optarg; break; |
e83d0967 RK |
492 | default: fatal(0, "invalid option"); |
493 | } | |
494 | } | |
495 | argc -= optind; | |
496 | argv += optind; | |
497 | if(argc < 1 || argc > 2) | |
498 | fatal(0, "usage: disorder-playrtp [OPTIONS] ADDRESS [PORT]"); | |
499 | sl.n = argc; | |
500 | sl.s = argv; | |
501 | /* Listen for inbound audio data */ | |
0b75463f | 502 | if(!(res = get_address(&sl, &prefs, &sockname))) |
e83d0967 RK |
503 | exit(1); |
504 | if((rtpfd = socket(res->ai_family, | |
505 | res->ai_socktype, | |
506 | res->ai_protocol)) < 0) | |
507 | fatal(errno, "error creating socket"); | |
508 | if(bind(rtpfd, res->ai_addr, res->ai_addrlen) < 0) | |
509 | fatal(errno, "error binding socket to %s", sockname); | |
510 | play_rtp(); | |
511 | return 0; | |
512 | } | |
513 | ||
514 | /* | |
515 | Local Variables: | |
516 | c-basic-offset:2 | |
517 | comment-column:40 | |
518 | fill-column:79 | |
519 | indent-tabs-mode:nil | |
520 | End: | |
521 | */ |