4 This file is part of polypaudio.
6 polypaudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 polypaudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
36 #include <polyp/polypaudio.h>
38 #define TIME_EVENT_USEC 50000
40 #if PA_API_VERSION != 9
41 #error Invalid Polypaudio API version
44 static enum { RECORD, PLAYBACK } mode = PLAYBACK;
46 static pa_context *context = NULL;
47 static pa_stream *stream = NULL;
48 static pa_mainloop_api *mainloop_api = NULL;
50 static void *buffer = NULL;
51 static size_t buffer_length = 0, buffer_index = 0;
53 static pa_io_event* stdio_event = NULL;
55 static char *stream_name = NULL, *client_name = NULL, *device = NULL;
57 static int verbose = 0;
58 static pa_volume_t volume = PA_VOLUME_NORM;
60 static pa_sample_spec sample_spec = {
61 .format = PA_SAMPLE_S16LE,
66 static pa_channel_map channel_map;
67 static int channel_map_set = 0;
69 /* A shortcut for terminating the application */
70 static void quit(int ret) {
72 mainloop_api->quit(mainloop_api, ret);
75 /* Write some data to the stream */
76 static void do_stream_write(size_t length) {
80 if (!buffer || !buffer_length)
84 if (l > buffer_length)
87 if (pa_stream_write(stream, (uint8_t*) buffer + buffer_index, l, NULL, 0, PA_SEEK_RELATIVE) < 0) {
88 fprintf(stderr, "pa_stream_write() failed: %s\n", pa_strerror(pa_context_errno(context)));
99 buffer_index = buffer_length = 0;
103 /* This is called whenever new data may be written to the stream */
104 static void stream_write_callback(pa_stream *s, size_t length, void *userdata) {
108 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_INPUT);
113 do_stream_write(length);
116 /* This is called whenever new data may is available */
117 static void stream_read_callback(pa_stream *s, size_t length, void *userdata) {
122 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_OUTPUT);
124 if (pa_stream_peek(s, &data, &length) < 0) {
125 fprintf(stderr, "pa_stream_peek() failed: %s\n", pa_strerror(pa_context_errno(context)));
130 assert(data && length);
133 fprintf(stderr, "Buffer overrun, dropping incoming data\n");
134 if (pa_stream_drop(s) < 0) {
135 fprintf(stderr, "pa_stream_drop() failed: %s\n", pa_strerror(pa_context_errno(context)));
141 buffer = pa_xmalloc(buffer_length = length);
142 memcpy(buffer, data, length);
147 /* This routine is called whenever the stream state changes */
148 static void stream_state_callback(pa_stream *s, void *userdata) {
151 switch (pa_stream_get_state(s)) {
152 case PA_STREAM_CREATING:
153 case PA_STREAM_TERMINATED:
156 case PA_STREAM_READY:
158 fprintf(stderr, "Stream successfully created.\n");
161 case PA_STREAM_FAILED:
163 fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
168 /* This is called whenever the context status changes */
169 static void context_state_callback(pa_context *c, void *userdata) {
172 switch (pa_context_get_state(c)) {
173 case PA_CONTEXT_CONNECTING:
174 case PA_CONTEXT_AUTHORIZING:
175 case PA_CONTEXT_SETTING_NAME:
178 case PA_CONTEXT_READY: {
181 assert(c && !stream);
184 fprintf(stderr, "Connection established.\n");
186 if (!(stream = pa_stream_new(c, stream_name, &sample_spec, channel_map_set ? &channel_map : NULL))) {
187 fprintf(stderr, "pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(c)));
191 pa_stream_set_state_callback(stream, stream_state_callback, NULL);
192 pa_stream_set_write_callback(stream, stream_write_callback, NULL);
193 pa_stream_set_read_callback(stream, stream_read_callback, NULL);
195 if (mode == PLAYBACK) {
197 if ((r = pa_stream_connect_playback(stream, device, NULL, 0, pa_cvolume_set(&cv, sample_spec.channels, volume), NULL)) < 0) {
198 fprintf(stderr, "pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(c)));
203 if ((r = pa_stream_connect_record(stream, device, NULL, 0)) < 0) {
204 fprintf(stderr, "pa_stream_connect_record() failed: %s\n", pa_strerror(pa_context_errno(c)));
212 case PA_CONTEXT_TERMINATED:
216 case PA_CONTEXT_FAILED:
218 fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
229 /* Connection draining complete */
230 static void context_drain_complete(pa_context*c, void *userdata) {
231 pa_context_disconnect(c);
234 /* Stream draining complete */
235 static void stream_drain_complete(pa_stream*s, int success, void *userdata) {
239 fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
244 fprintf(stderr, "Playback stream drained.\n");
246 pa_stream_disconnect(stream);
247 pa_stream_unref(stream);
250 if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
251 pa_context_disconnect(context);
254 fprintf(stderr, "Draining connection to server.\n");
258 /* New data on STDIN **/
259 static void stdin_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
262 assert(a == mainloop_api && e && stdio_event == e);
265 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
269 if (!stream || pa_stream_get_state(stream) != PA_STREAM_READY || !(l = w = pa_stream_writable_size(stream)))
272 buffer = pa_xmalloc(l);
274 if ((r = read(fd, buffer, l)) <= 0) {
279 fprintf(stderr, "Got EOF.\n");
281 if (!(o = pa_stream_drain(stream, stream_drain_complete, NULL))) {
282 fprintf(stderr, "pa_stream_drain(): %s\n", pa_strerror(pa_context_errno(context)));
287 pa_operation_unref(o);
289 fprintf(stderr, "read() failed: %s\n", strerror(errno));
293 mainloop_api->io_free(stdio_event);
305 /* Some data may be written to STDOUT */
306 static void stdout_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
308 assert(a == mainloop_api && e && stdio_event == e);
311 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
315 assert(buffer_length);
317 if ((r = write(fd, (uint8_t*) buffer+buffer_index, buffer_length)) <= 0) {
318 fprintf(stderr, "write() failed: %s\n", strerror(errno));
321 mainloop_api->io_free(stdio_event);
329 if (!buffer_length) {
332 buffer_length = buffer_index = 0;
336 /* UNIX signal to quit recieved */
337 static void exit_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
339 fprintf(stderr, "Got signal, exiting.\n");
343 /* Show the current latency */
344 static void stream_update_timing_callback(pa_stream *s, int success, void *userdata) {
345 pa_usec_t latency, usec;
351 pa_stream_get_time(s, &usec) < 0 ||
352 pa_stream_get_latency(s, &latency, &negative) < 0) {
353 fprintf(stderr, "Failed to get latency: %s\n", pa_strerror(pa_context_errno(context)));
358 fprintf(stderr, "Time: %0.3f sec; Latency: %0.0f usec. \r",
359 (float) usec / 1000000,
360 (float) latency * (negative?-1:1));
363 /* Someone requested that the latency is shown */
364 static void sigusr1_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
369 pa_operation_unref(pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL));
372 static void time_event_callback(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
375 if (stream && pa_stream_get_state(stream) == PA_STREAM_READY) {
377 if (!(o = pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL)))
378 fprintf(stderr, "pa_stream_update_timing_info() failed: %s\n", pa_strerror(pa_context_errno(context)));
380 pa_operation_unref(o);
383 pa_gettimeofday(&next);
384 pa_timeval_add(&next, TIME_EVENT_USEC);
386 m->time_restart(e, &next);
389 static void help(const char *argv0) {
391 printf("%s [options]\n\n"
392 " -h, --help Show this help\n"
393 " --version Show version\n\n"
394 " -r, --record Create a connection for recording\n"
395 " -p, --playback Create a connection for playback\n\n"
396 " -v, --verbose Enable verbose operations\n\n"
397 " -s, --server=SERVER The name of the server to connect to\n"
398 " -d, --device=DEVICE The name of the sink/source to connect to\n"
399 " -n, --client-name=NAME How to call this client on the server\n"
400 " --stream-name=NAME How to call this stream on the server\n"
401 " --volume=VOLUME Specify the initial (linear) volume in range 0...65536\n"
402 " --rate=SAMPLERATE The sample rate in Hz (defaults to 44100)\n"
403 " --format=SAMPLEFORMAT The sample type, one of s16le, s16be, u8, float32le,\n"
404 " float32be, ulaw, alaw (defaults to s16ne)\n"
405 " --channels=CHANNELS The number of channels, 1 for mono, 2 for stereo\n"
407 " --channel-map=CHANNELMAP Channel map to use instead of the default\n",
421 int main(int argc, char *argv[]) {
422 pa_mainloop* m = NULL;
424 char *bn, *server = NULL;
425 pa_time_event *time_event = NULL;
427 static const struct option long_options[] = {
428 {"record", 0, NULL, 'r'},
429 {"playback", 0, NULL, 'p'},
430 {"device", 1, NULL, 'd'},
431 {"server", 1, NULL, 's'},
432 {"client-name", 1, NULL, 'n'},
433 {"stream-name", 1, NULL, ARG_STREAM_NAME},
434 {"version", 0, NULL, ARG_VERSION},
435 {"help", 0, NULL, 'h'},
436 {"verbose", 0, NULL, 'v'},
437 {"volume", 1, NULL, ARG_VOLUME},
438 {"rate", 1, NULL, ARG_SAMPLERATE},
439 {"format", 1, NULL, ARG_SAMPLEFORMAT},
440 {"channels", 1, NULL, ARG_CHANNELS},
441 {"channel-map", 1, NULL, ARG_CHANNELMAP},
445 if (!(bn = strrchr(argv[0], '/')))
450 if (strstr(bn, "rec") || strstr(bn, "mon"))
452 else if (strstr(bn, "cat") || strstr(bn, "play"))
455 while ((c = getopt_long(argc, argv, "rpd:s:n:hv", long_options, NULL)) != -1) {
464 printf("pacat "PACKAGE_VERSION"\nCompiled with libpolyp %s\nLinked with libpolyp %s\n", pa_get_headers_version(), pa_get_library_version());
478 device = pa_xstrdup(optarg);
483 server = pa_xstrdup(optarg);
487 pa_xfree(client_name);
488 client_name = pa_xstrdup(optarg);
491 case ARG_STREAM_NAME:
492 pa_xfree(stream_name);
493 stream_name = pa_xstrdup(optarg);
501 int v = atoi(optarg);
502 volume = v < 0 ? 0 : v;
507 sample_spec.channels = atoi(optarg);
510 case ARG_SAMPLEFORMAT:
511 sample_spec.format = pa_parse_sample_format(optarg);
515 sample_spec.rate = atoi(optarg);
519 if (!pa_channel_map_parse(&channel_map, optarg)) {
520 fprintf(stderr, "Invalid channel map\n");
532 if (!pa_sample_spec_valid(&sample_spec)) {
533 fprintf(stderr, "Invalid sample specification\n");
537 if (channel_map_set && channel_map.channels != sample_spec.channels) {
538 fprintf(stderr, "Channel map doesn't match sample specification\n");
543 char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
544 pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
545 fprintf(stderr, "Opening a %s stream with sample specification '%s'.\n", mode == RECORD ? "recording" : "playback", t);
548 if (!(optind >= argc)) {
549 if (optind+1 == argc) {
552 if ((fd = open(argv[optind], mode == PLAYBACK ? O_RDONLY : O_WRONLY|O_TRUNC|O_CREAT, 0666)) < 0) {
553 fprintf(stderr, "open(): %s\n", strerror(errno));
557 if (dup2(fd, mode == PLAYBACK ? 0 : 1) < 0) {
558 fprintf(stderr, "dup2(): %s\n", strerror(errno));
565 stream_name = pa_xstrdup(argv[optind]);
568 fprintf(stderr, "Too many arguments.\n");
574 client_name = pa_xstrdup(bn);
577 stream_name = pa_xstrdup(client_name);
579 /* Set up a new main loop */
580 if (!(m = pa_mainloop_new())) {
581 fprintf(stderr, "pa_mainloop_new() failed.\n");
585 mainloop_api = pa_mainloop_get_api(m);
587 r = pa_signal_init(mainloop_api);
589 pa_signal_new(SIGINT, exit_signal_callback, NULL);
590 pa_signal_new(SIGTERM, exit_signal_callback, NULL);
592 pa_signal_new(SIGUSR1, sigusr1_signal_callback, NULL);
595 signal(SIGPIPE, SIG_IGN);
598 if (!(stdio_event = mainloop_api->io_new(mainloop_api,
599 mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
600 mode == PLAYBACK ? PA_IO_EVENT_INPUT : PA_IO_EVENT_OUTPUT,
601 mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
602 fprintf(stderr, "io_new() failed.\n");
606 /* Create a new connection context */
607 if (!(context = pa_context_new(mainloop_api, client_name))) {
608 fprintf(stderr, "pa_context_new() failed.\n");
612 pa_context_set_state_callback(context, context_state_callback, NULL);
614 /* Connect the context */
615 pa_context_connect(context, server, 0, NULL);
620 pa_gettimeofday(&tv);
621 pa_timeval_add(&tv, TIME_EVENT_USEC);
623 if (!(time_event = mainloop_api->time_new(mainloop_api, &tv, time_event_callback, NULL))) {
624 fprintf(stderr, "time_new() failed.\n");
629 /* Run the main loop */
630 if (pa_mainloop_run(m, &ret) < 0) {
631 fprintf(stderr, "pa_mainloop_run() failed.\n");
637 pa_stream_unref(stream);
640 pa_context_unref(context);
643 assert(mainloop_api);
644 mainloop_api->io_free(stdio_event);
648 assert(mainloop_api);
649 mainloop_api->time_free(time_event);
661 pa_xfree(client_name);
662 pa_xfree(stream_name);