4 This file is part of PulseAudio.
6 Copyright 2004-2006 Lennart Poettering
7 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
9 PulseAudio is free software; you can redistribute it and/or modify
10 it under the terms of the GNU Lesser General Public License as published
11 by the Free Software Foundation; either version 2 of the License,
12 or (at your option) any later version.
14 PulseAudio is distributed in the hope that it will be useful, but
15 WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 General Public License for more details.
19 You should have received a copy of the GNU Lesser General Public License
20 along with PulseAudio; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
39 #include <pulse/pulseaudio.h>
41 #define TIME_EVENT_USEC 50000
43 #if PA_API_VERSION < 9
44 #error Invalid PulseAudio API version
47 static enum { RECORD, PLAYBACK } mode = PLAYBACK;
49 static pa_context *context = NULL;
50 static pa_stream *stream = NULL;
51 static pa_mainloop_api *mainloop_api = NULL;
53 static void *buffer = NULL;
54 static size_t buffer_length = 0, buffer_index = 0;
56 static pa_io_event* stdio_event = NULL;
58 static char *stream_name = NULL, *client_name = NULL, *device = NULL;
60 static int verbose = 0;
61 static pa_volume_t volume = PA_VOLUME_NORM;
63 static pa_sample_spec sample_spec = {
64 .format = PA_SAMPLE_S16LE,
69 static pa_channel_map channel_map;
70 static int channel_map_set = 0;
72 /* A shortcut for terminating the application */
73 static void quit(int ret) {
75 mainloop_api->quit(mainloop_api, ret);
78 /* Write some data to the stream */
79 static void do_stream_write(size_t length) {
83 if (!buffer || !buffer_length)
87 if (l > buffer_length)
90 if (pa_stream_write(stream, (uint8_t*) buffer + buffer_index, l, NULL, 0, PA_SEEK_RELATIVE) < 0) {
91 fprintf(stderr, "pa_stream_write() failed: %s\n", pa_strerror(pa_context_errno(context)));
102 buffer_index = buffer_length = 0;
106 /* This is called whenever new data may be written to the stream */
107 static void stream_write_callback(pa_stream *s, size_t length, void *userdata) {
111 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_INPUT);
116 do_stream_write(length);
119 /* This is called whenever new data may is available */
120 static void stream_read_callback(pa_stream *s, size_t length, void *userdata) {
125 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_OUTPUT);
127 if (pa_stream_peek(s, &data, &length) < 0) {
128 fprintf(stderr, "pa_stream_peek() failed: %s\n", pa_strerror(pa_context_errno(context)));
133 assert(data && length);
136 fprintf(stderr, "Buffer overrun, dropping incoming data\n");
137 if (pa_stream_drop(s) < 0) {
138 fprintf(stderr, "pa_stream_drop() failed: %s\n", pa_strerror(pa_context_errno(context)));
144 buffer = pa_xmalloc(buffer_length = length);
145 memcpy(buffer, data, length);
150 /* This routine is called whenever the stream state changes */
151 static void stream_state_callback(pa_stream *s, void *userdata) {
154 switch (pa_stream_get_state(s)) {
155 case PA_STREAM_CREATING:
156 case PA_STREAM_TERMINATED:
159 case PA_STREAM_READY:
161 const pa_buffer_attr *a;
163 fprintf(stderr, "Stream successfully created.\n");
165 if (!(a = pa_stream_get_buffer_attr(s)))
166 fprintf(stderr, "pa_stream_get_buffer_attr() failed: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
169 if (mode == PLAYBACK)
170 fprintf(stderr, "Buffer metrics: maxlength=%u, tlength=%u, prebuf=%u, minreq=%u\n", a->maxlength, a->tlength, a->prebuf, a->minreq);
172 assert(mode == RECORD);
173 fprintf(stderr, "Buffer metrics: maxlength=%u, fragsize=%u\n", a->maxlength, a->fragsize);
182 case PA_STREAM_FAILED:
184 fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
189 /* This is called whenever the context status changes */
190 static void context_state_callback(pa_context *c, void *userdata) {
193 switch (pa_context_get_state(c)) {
194 case PA_CONTEXT_CONNECTING:
195 case PA_CONTEXT_AUTHORIZING:
196 case PA_CONTEXT_SETTING_NAME:
199 case PA_CONTEXT_READY: {
202 assert(c && !stream);
205 fprintf(stderr, "Connection established.\n");
207 if (!(stream = pa_stream_new(c, stream_name, &sample_spec, channel_map_set ? &channel_map : NULL))) {
208 fprintf(stderr, "pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(c)));
212 pa_stream_set_state_callback(stream, stream_state_callback, NULL);
213 pa_stream_set_write_callback(stream, stream_write_callback, NULL);
214 pa_stream_set_read_callback(stream, stream_read_callback, NULL);
216 if (mode == PLAYBACK) {
218 if ((r = pa_stream_connect_playback(stream, device, NULL, 0, pa_cvolume_set(&cv, sample_spec.channels, volume), NULL)) < 0) {
219 fprintf(stderr, "pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(c)));
224 if ((r = pa_stream_connect_record(stream, device, NULL, 0)) < 0) {
225 fprintf(stderr, "pa_stream_connect_record() failed: %s\n", pa_strerror(pa_context_errno(c)));
233 case PA_CONTEXT_TERMINATED:
237 case PA_CONTEXT_FAILED:
239 fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
250 /* Connection draining complete */
251 static void context_drain_complete(pa_context*c, void *userdata) {
252 pa_context_disconnect(c);
255 /* Stream draining complete */
256 static void stream_drain_complete(pa_stream*s, int success, void *userdata) {
260 fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
265 fprintf(stderr, "Playback stream drained.\n");
267 pa_stream_disconnect(stream);
268 pa_stream_unref(stream);
271 if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
272 pa_context_disconnect(context);
275 fprintf(stderr, "Draining connection to server.\n");
279 /* New data on STDIN **/
280 static void stdin_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
283 assert(a == mainloop_api && e && stdio_event == e);
286 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
290 if (!stream || pa_stream_get_state(stream) != PA_STREAM_READY || !(l = w = pa_stream_writable_size(stream)))
293 buffer = pa_xmalloc(l);
295 if ((r = read(fd, buffer, l)) <= 0) {
298 fprintf(stderr, "Got EOF.\n");
303 if (!(o = pa_stream_drain(stream, stream_drain_complete, NULL))) {
304 fprintf(stderr, "pa_stream_drain(): %s\n", pa_strerror(pa_context_errno(context)));
309 pa_operation_unref(o);
314 fprintf(stderr, "read() failed: %s\n", strerror(errno));
318 mainloop_api->io_free(stdio_event);
330 /* Some data may be written to STDOUT */
331 static void stdout_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
333 assert(a == mainloop_api && e && stdio_event == e);
336 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
340 assert(buffer_length);
342 if ((r = write(fd, (uint8_t*) buffer+buffer_index, buffer_length)) <= 0) {
343 fprintf(stderr, "write() failed: %s\n", strerror(errno));
346 mainloop_api->io_free(stdio_event);
354 if (!buffer_length) {
357 buffer_length = buffer_index = 0;
361 /* UNIX signal to quit recieved */
362 static void exit_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
364 fprintf(stderr, "Got signal, exiting.\n");
368 /* Show the current latency */
369 static void stream_update_timing_callback(pa_stream *s, int success, void *userdata) {
370 pa_usec_t latency, usec;
376 pa_stream_get_time(s, &usec) < 0 ||
377 pa_stream_get_latency(s, &latency, &negative) < 0) {
378 fprintf(stderr, "Failed to get latency: %s\n", pa_strerror(pa_context_errno(context)));
383 fprintf(stderr, "Time: %0.3f sec; Latency: %0.0f usec. \r",
384 (float) usec / 1000000,
385 (float) latency * (negative?-1:1));
388 /* Someone requested that the latency is shown */
389 static void sigusr1_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
394 pa_operation_unref(pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL));
397 static void time_event_callback(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
400 if (stream && pa_stream_get_state(stream) == PA_STREAM_READY) {
402 if (!(o = pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL)))
403 fprintf(stderr, "pa_stream_update_timing_info() failed: %s\n", pa_strerror(pa_context_errno(context)));
405 pa_operation_unref(o);
408 pa_gettimeofday(&next);
409 pa_timeval_add(&next, TIME_EVENT_USEC);
411 m->time_restart(e, &next);
414 static void help(const char *argv0) {
416 printf("%s [options]\n\n"
417 " -h, --help Show this help\n"
418 " --version Show version\n\n"
419 " -r, --record Create a connection for recording\n"
420 " -p, --playback Create a connection for playback\n\n"
421 " -v, --verbose Enable verbose operations\n\n"
422 " -s, --server=SERVER The name of the server to connect to\n"
423 " -d, --device=DEVICE The name of the sink/source to connect to\n"
424 " -n, --client-name=NAME How to call this client on the server\n"
425 " --stream-name=NAME How to call this stream on the server\n"
426 " --volume=VOLUME Specify the initial (linear) volume in range 0...65536\n"
427 " --rate=SAMPLERATE The sample rate in Hz (defaults to 44100)\n"
428 " --format=SAMPLEFORMAT The sample type, one of s16le, s16be, u8, float32le,\n"
429 " float32be, ulaw, alaw (defaults to s16ne)\n"
430 " --channels=CHANNELS The number of channels, 1 for mono, 2 for stereo\n"
432 " --channel-map=CHANNELMAP Channel map to use instead of the default\n",
446 int main(int argc, char *argv[]) {
447 pa_mainloop* m = NULL;
449 char *bn, *server = NULL;
450 pa_time_event *time_event = NULL;
452 static const struct option long_options[] = {
453 {"record", 0, NULL, 'r'},
454 {"playback", 0, NULL, 'p'},
455 {"device", 1, NULL, 'd'},
456 {"server", 1, NULL, 's'},
457 {"client-name", 1, NULL, 'n'},
458 {"stream-name", 1, NULL, ARG_STREAM_NAME},
459 {"version", 0, NULL, ARG_VERSION},
460 {"help", 0, NULL, 'h'},
461 {"verbose", 0, NULL, 'v'},
462 {"volume", 1, NULL, ARG_VOLUME},
463 {"rate", 1, NULL, ARG_SAMPLERATE},
464 {"format", 1, NULL, ARG_SAMPLEFORMAT},
465 {"channels", 1, NULL, ARG_CHANNELS},
466 {"channel-map", 1, NULL, ARG_CHANNELMAP},
470 if (!(bn = strrchr(argv[0], '/')))
475 if (strstr(bn, "rec") || strstr(bn, "mon"))
477 else if (strstr(bn, "cat") || strstr(bn, "play"))
480 while ((c = getopt_long(argc, argv, "rpd:s:n:hv", long_options, NULL)) != -1) {
489 printf("pacat "PACKAGE_VERSION"\nCompiled with libpulse %s\nLinked with libpulse %s\n", pa_get_headers_version(), pa_get_library_version());
503 device = pa_xstrdup(optarg);
508 server = pa_xstrdup(optarg);
512 pa_xfree(client_name);
513 client_name = pa_xstrdup(optarg);
516 case ARG_STREAM_NAME:
517 pa_xfree(stream_name);
518 stream_name = pa_xstrdup(optarg);
526 int v = atoi(optarg);
527 volume = v < 0 ? 0 : v;
532 sample_spec.channels = atoi(optarg);
535 case ARG_SAMPLEFORMAT:
536 sample_spec.format = pa_parse_sample_format(optarg);
540 sample_spec.rate = atoi(optarg);
544 if (!pa_channel_map_parse(&channel_map, optarg)) {
545 fprintf(stderr, "Invalid channel map\n");
557 if (!pa_sample_spec_valid(&sample_spec)) {
558 fprintf(stderr, "Invalid sample specification\n");
562 if (channel_map_set && channel_map.channels != sample_spec.channels) {
563 fprintf(stderr, "Channel map doesn't match sample specification\n");
568 char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
569 pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
570 fprintf(stderr, "Opening a %s stream with sample specification '%s'.\n", mode == RECORD ? "recording" : "playback", t);
573 if (!(optind >= argc)) {
574 if (optind+1 == argc) {
577 if ((fd = open(argv[optind], mode == PLAYBACK ? O_RDONLY : O_WRONLY|O_TRUNC|O_CREAT, 0666)) < 0) {
578 fprintf(stderr, "open(): %s\n", strerror(errno));
582 if (dup2(fd, mode == PLAYBACK ? 0 : 1) < 0) {
583 fprintf(stderr, "dup2(): %s\n", strerror(errno));
590 stream_name = pa_xstrdup(argv[optind]);
593 fprintf(stderr, "Too many arguments.\n");
599 client_name = pa_xstrdup(bn);
602 stream_name = pa_xstrdup(client_name);
604 /* Set up a new main loop */
605 if (!(m = pa_mainloop_new())) {
606 fprintf(stderr, "pa_mainloop_new() failed.\n");
610 mainloop_api = pa_mainloop_get_api(m);
612 r = pa_signal_init(mainloop_api);
614 pa_signal_new(SIGINT, exit_signal_callback, NULL);
615 pa_signal_new(SIGTERM, exit_signal_callback, NULL);
617 pa_signal_new(SIGUSR1, sigusr1_signal_callback, NULL);
620 signal(SIGPIPE, SIG_IGN);
623 if (!(stdio_event = mainloop_api->io_new(mainloop_api,
624 mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
625 mode == PLAYBACK ? PA_IO_EVENT_INPUT : PA_IO_EVENT_OUTPUT,
626 mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
627 fprintf(stderr, "io_new() failed.\n");
631 /* Create a new connection context */
632 if (!(context = pa_context_new(mainloop_api, client_name))) {
633 fprintf(stderr, "pa_context_new() failed.\n");
637 pa_context_set_state_callback(context, context_state_callback, NULL);
639 /* Connect the context */
640 pa_context_connect(context, server, 0, NULL);
645 pa_gettimeofday(&tv);
646 pa_timeval_add(&tv, TIME_EVENT_USEC);
648 if (!(time_event = mainloop_api->time_new(mainloop_api, &tv, time_event_callback, NULL))) {
649 fprintf(stderr, "time_new() failed.\n");
654 /* Run the main loop */
655 if (pa_mainloop_run(m, &ret) < 0) {
656 fprintf(stderr, "pa_mainloop_run() failed.\n");
662 pa_stream_unref(stream);
665 pa_context_unref(context);
668 assert(mainloop_api);
669 mainloop_api->io_free(stdio_event);
673 assert(mainloop_api);
674 mainloop_api->time_free(time_event);
686 pa_xfree(client_name);
687 pa_xfree(stream_name);