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>
37 #include <polypcore/util.h>
39 #define TIME_EVENT_USEC 50000
41 #if PA_API_VERSION != 9
42 #error Invalid Polypaudio API version
45 static enum { RECORD, PLAYBACK } mode = PLAYBACK;
47 static pa_context *context = NULL;
48 static pa_stream *stream = NULL;
49 static pa_mainloop_api *mainloop_api = NULL;
51 static void *buffer = NULL;
52 static size_t buffer_length = 0, buffer_index = 0;
54 static pa_io_event* stdio_event = NULL;
56 static char *stream_name = NULL, *client_name = NULL, *device = NULL;
58 static int verbose = 0;
59 static pa_volume_t volume = PA_VOLUME_NORM;
61 static pa_sample_spec sample_spec = {
62 .format = PA_SAMPLE_S16LE,
67 static pa_channel_map channel_map;
68 static int channel_map_set = 0;
70 /* A shortcut for terminating the application */
71 static void quit(int ret) {
73 mainloop_api->quit(mainloop_api, ret);
76 /* Write some data to the stream */
77 static void do_stream_write(size_t length) {
81 if (!buffer || !buffer_length)
85 if (l > buffer_length)
88 if (pa_stream_write(stream, (uint8_t*) buffer + buffer_index, l, NULL, 0, PA_SEEK_RELATIVE) < 0) {
89 fprintf(stderr, "pa_stream_write() failed: %s\n", pa_strerror(pa_context_errno(context)));
100 buffer_index = buffer_length = 0;
104 /* This is called whenever new data may be written to the stream */
105 static void stream_write_callback(pa_stream *s, size_t length, void *userdata) {
109 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_INPUT);
114 do_stream_write(length);
117 /* This is called whenever new data may is available */
118 static void stream_read_callback(pa_stream *s, size_t length, void *userdata) {
123 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_OUTPUT);
125 if (pa_stream_peek(s, &data, &length) < 0) {
126 fprintf(stderr, "pa_stream_peek() failed: %s\n", pa_strerror(pa_context_errno(context)));
131 assert(data && length);
134 fprintf(stderr, "Buffer overrun, dropping incoming data\n");
135 if (pa_stream_drop(s) < 0) {
136 fprintf(stderr, "pa_stream_drop() failed: %s\n", pa_strerror(pa_context_errno(context)));
142 buffer = pa_xmalloc(buffer_length = length);
143 memcpy(buffer, data, length);
148 /* This routine is called whenever the stream state changes */
149 static void stream_state_callback(pa_stream *s, void *userdata) {
152 switch (pa_stream_get_state(s)) {
153 case PA_STREAM_CREATING:
154 case PA_STREAM_TERMINATED:
157 case PA_STREAM_READY:
159 fprintf(stderr, "Stream successfully created.\n");
162 case PA_STREAM_FAILED:
164 fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
169 /* This is called whenever the context status changes */
170 static void context_state_callback(pa_context *c, void *userdata) {
173 switch (pa_context_get_state(c)) {
174 case PA_CONTEXT_CONNECTING:
175 case PA_CONTEXT_AUTHORIZING:
176 case PA_CONTEXT_SETTING_NAME:
179 case PA_CONTEXT_READY: {
182 assert(c && !stream);
185 fprintf(stderr, "Connection established.\n");
187 if (!(stream = pa_stream_new(c, stream_name, &sample_spec, channel_map_set ? &channel_map : NULL))) {
188 fprintf(stderr, "pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(c)));
192 pa_stream_set_state_callback(stream, stream_state_callback, NULL);
193 pa_stream_set_write_callback(stream, stream_write_callback, NULL);
194 pa_stream_set_read_callback(stream, stream_read_callback, NULL);
196 if (mode == PLAYBACK) {
198 if ((r = pa_stream_connect_playback(stream, device, NULL, 0, pa_cvolume_set(&cv, sample_spec.channels, volume), NULL)) < 0) {
199 fprintf(stderr, "pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(c)));
204 if ((r = pa_stream_connect_record(stream, device, NULL, 0)) < 0) {
205 fprintf(stderr, "pa_stream_connect_record() failed: %s\n", pa_strerror(pa_context_errno(c)));
213 case PA_CONTEXT_TERMINATED:
217 case PA_CONTEXT_FAILED:
219 fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
230 /* Connection draining complete */
231 static void context_drain_complete(pa_context*c, void *userdata) {
232 pa_context_disconnect(c);
235 /* Stream draining complete */
236 static void stream_drain_complete(pa_stream*s, int success, void *userdata) {
240 fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
245 fprintf(stderr, "Playback stream drained.\n");
247 pa_stream_disconnect(stream);
248 pa_stream_unref(stream);
251 if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
252 pa_context_disconnect(context);
255 fprintf(stderr, "Draining connection to server.\n");
259 /* New data on STDIN **/
260 static void stdin_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
263 assert(a == mainloop_api && e && stdio_event == e);
266 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
270 if (!stream || pa_stream_get_state(stream) != PA_STREAM_READY || !(l = w = pa_stream_writable_size(stream)))
273 buffer = pa_xmalloc(l);
275 if ((r = read(fd, buffer, l)) <= 0) {
280 fprintf(stderr, "Got EOF.\n");
282 if (!(o = pa_stream_drain(stream, stream_drain_complete, NULL))) {
283 fprintf(stderr, "pa_stream_drain(): %s\n", pa_strerror(pa_context_errno(context)));
288 pa_operation_unref(o);
290 fprintf(stderr, "read() failed: %s\n", strerror(errno));
294 mainloop_api->io_free(stdio_event);
306 /* Some data may be written to STDOUT */
307 static void stdout_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
309 assert(a == mainloop_api && e && stdio_event == e);
312 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
316 assert(buffer_length);
318 if ((r = write(fd, (uint8_t*) buffer+buffer_index, buffer_length)) <= 0) {
319 fprintf(stderr, "write() failed: %s\n", strerror(errno));
322 mainloop_api->io_free(stdio_event);
330 if (!buffer_length) {
333 buffer_length = buffer_index = 0;
337 /* UNIX signal to quit recieved */
338 static void exit_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
340 fprintf(stderr, "Got signal, exiting.\n");
344 /* Show the current latency */
345 static void stream_update_timing_callback(pa_stream *s, int success, void *userdata) {
346 pa_usec_t latency, usec;
352 pa_stream_get_time(s, &usec) < 0 ||
353 pa_stream_get_latency(s, &latency, &negative) < 0) {
354 fprintf(stderr, "Failed to get latency: %s\n", pa_strerror(pa_context_errno(context)));
359 fprintf(stderr, "Time: %0.3f sec; Latency: %0.0f usec. \r",
360 (float) usec / 1000000,
361 (float) latency * (negative?-1:1));
364 /* Someone requested that the latency is shown */
365 static void sigusr1_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
370 pa_operation_unref(pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL));
373 static void time_event_callback(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
376 if (stream && pa_stream_get_state(stream) == PA_STREAM_READY) {
378 if (!(o = pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL)))
379 fprintf(stderr, "pa_stream_update_timing_info() failed: %s\n", pa_strerror(pa_context_errno(context)));
381 pa_operation_unref(o);
384 pa_gettimeofday(&next);
385 pa_timeval_add(&next, TIME_EVENT_USEC);
387 m->time_restart(e, &next);
390 static void help(const char *argv0) {
392 printf("%s [options]\n\n"
393 " -h, --help Show this help\n"
394 " --version Show version\n\n"
395 " -r, --record Create a connection for recording\n"
396 " -p, --playback Create a connection for playback\n\n"
397 " -v, --verbose Enable verbose operations\n\n"
398 " -s, --server=SERVER The name of the server to connect to\n"
399 " -d, --device=DEVICE The name of the sink/source to connect to\n"
400 " -n, --client-name=NAME How to call this client on the server\n"
401 " --stream-name=NAME How to call this stream on the server\n"
402 " --volume=VOLUME Specify the initial (linear) volume in range 0...65536\n"
403 " --rate=SAMPLERATE The sample rate in Hz (defaults to 44100)\n"
404 " --format=SAMPLEFORMAT The sample type, one of s16le, s16be, u8, float32le,\n"
405 " float32be, ulaw, alaw (defaults to s16ne)\n"
406 " --channels=CHANNELS The number of channels, 1 for mono, 2 for stereo\n"
408 " --channel-map=CHANNELMAP Channel map to use instead of the default\n",
422 int main(int argc, char *argv[]) {
423 pa_mainloop* m = NULL;
425 char *bn, *server = NULL;
426 pa_time_event *time_event = NULL;
428 static const struct option long_options[] = {
429 {"record", 0, NULL, 'r'},
430 {"playback", 0, NULL, 'p'},
431 {"device", 1, NULL, 'd'},
432 {"server", 1, NULL, 's'},
433 {"client-name", 1, NULL, 'n'},
434 {"stream-name", 1, NULL, ARG_STREAM_NAME},
435 {"version", 0, NULL, ARG_VERSION},
436 {"help", 0, NULL, 'h'},
437 {"verbose", 0, NULL, 'v'},
438 {"volume", 1, NULL, ARG_VOLUME},
439 {"rate", 1, NULL, ARG_SAMPLERATE},
440 {"format", 1, NULL, ARG_SAMPLEFORMAT},
441 {"channels", 1, NULL, ARG_CHANNELS},
442 {"channel-map", 1, NULL, ARG_CHANNELMAP},
446 if (!(bn = strrchr(argv[0], '/')))
451 if (strstr(bn, "rec") || strstr(bn, "mon"))
453 else if (strstr(bn, "cat") || strstr(bn, "play"))
456 while ((c = getopt_long(argc, argv, "rpd:s:n:hv", long_options, NULL)) != -1) {
465 printf("pacat "PACKAGE_VERSION"\nCompiled with libpolyp %s\nLinked with libpolyp %s\n", pa_get_headers_version(), pa_get_library_version());
479 device = pa_xstrdup(optarg);
484 server = pa_xstrdup(optarg);
488 pa_xfree(client_name);
489 client_name = pa_xstrdup(optarg);
492 case ARG_STREAM_NAME:
493 pa_xfree(stream_name);
494 stream_name = pa_xstrdup(optarg);
502 int v = atoi(optarg);
503 volume = v < 0 ? 0 : v;
508 sample_spec.channels = atoi(optarg);
511 case ARG_SAMPLEFORMAT:
512 sample_spec.format = pa_parse_sample_format(optarg);
516 sample_spec.rate = atoi(optarg);
520 if (!pa_channel_map_parse(&channel_map, optarg)) {
521 fprintf(stderr, "Invalid channel map\n");
533 if (!pa_sample_spec_valid(&sample_spec)) {
534 fprintf(stderr, "Invalid sample specification\n");
538 if (channel_map_set && channel_map.channels != sample_spec.channels) {
539 fprintf(stderr, "Channel map doesn't match sample specification\n");
544 char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
545 pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
546 fprintf(stderr, "Opening a %s stream with sample specification '%s'.\n", mode == RECORD ? "recording" : "playback", t);
549 if (!(optind >= argc)) {
550 if (optind+1 == argc) {
553 if ((fd = open(argv[optind], mode == PLAYBACK ? O_RDONLY : O_WRONLY|O_TRUNC|O_CREAT, 0666)) < 0) {
554 fprintf(stderr, "open(): %s\n", strerror(errno));
558 if (dup2(fd, mode == PLAYBACK ? 0 : 1) < 0) {
559 fprintf(stderr, "dup2(): %s\n", strerror(errno));
566 stream_name = pa_xstrdup(argv[optind]);
569 fprintf(stderr, "Too many arguments.\n");
575 client_name = pa_xstrdup(bn);
578 stream_name = pa_xstrdup(client_name);
580 /* Set up a new main loop */
581 if (!(m = pa_mainloop_new())) {
582 fprintf(stderr, "pa_mainloop_new() failed.\n");
586 mainloop_api = pa_mainloop_get_api(m);
588 r = pa_signal_init(mainloop_api);
590 pa_signal_new(SIGINT, exit_signal_callback, NULL);
591 pa_signal_new(SIGTERM, exit_signal_callback, NULL);
593 pa_signal_new(SIGUSR1, sigusr1_signal_callback, NULL);
596 signal(SIGPIPE, SIG_IGN);
599 if (!(stdio_event = mainloop_api->io_new(mainloop_api,
600 mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
601 mode == PLAYBACK ? PA_IO_EVENT_INPUT : PA_IO_EVENT_OUTPUT,
602 mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
603 fprintf(stderr, "io_new() failed.\n");
607 /* Create a new connection context */
608 if (!(context = pa_context_new(mainloop_api, client_name))) {
609 fprintf(stderr, "pa_context_new() failed.\n");
613 pa_context_set_state_callback(context, context_state_callback, NULL);
615 /* Connect the context */
616 pa_context_connect(context, server, 0, NULL);
621 pa_gettimeofday(&tv);
622 pa_timeval_add(&tv, TIME_EVENT_USEC);
624 if (!(time_event = mainloop_api->time_new(mainloop_api, &tv, time_event_callback, NULL))) {
625 fprintf(stderr, "time_new() failed.\n");
630 /* Run the main loop */
631 if (pa_mainloop_run(m, &ret) < 0) {
632 fprintf(stderr, "pa_mainloop_run() failed.\n");
638 pa_stream_unref(stream);
641 pa_context_unref(context);
644 assert(mainloop_api);
645 mainloop_api->io_free(stdio_event);
649 assert(mainloop_api);
650 mainloop_api->time_free(time_event);
662 pa_xfree(client_name);
663 pa_xfree(stream_name);