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 < 10
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 static pa_stream_flags_t flags = 0;
74 /* A shortcut for terminating the application */
75 static void quit(int ret) {
77 mainloop_api->quit(mainloop_api, ret);
80 /* Write some data to the stream */
81 static void do_stream_write(size_t length) {
85 if (!buffer || !buffer_length)
89 if (l > buffer_length)
92 if (pa_stream_write(stream, (uint8_t*) buffer + buffer_index, l, NULL, 0, PA_SEEK_RELATIVE) < 0) {
93 fprintf(stderr, "pa_stream_write() failed: %s\n", pa_strerror(pa_context_errno(context)));
101 if (!buffer_length) {
104 buffer_index = buffer_length = 0;
108 /* This is called whenever new data may be written to the stream */
109 static void stream_write_callback(pa_stream *s, size_t length, void *userdata) {
114 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_INPUT);
119 do_stream_write(length);
122 /* This is called whenever new data may is available */
123 static void stream_read_callback(pa_stream *s, size_t length, void *userdata) {
129 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_OUTPUT);
131 if (pa_stream_peek(s, &data, &length) < 0) {
132 fprintf(stderr, "pa_stream_peek() failed: %s\n", pa_strerror(pa_context_errno(context)));
141 fprintf(stderr, "Buffer overrun, dropping incoming data\n");
142 if (pa_stream_drop(s) < 0) {
143 fprintf(stderr, "pa_stream_drop() failed: %s\n", pa_strerror(pa_context_errno(context)));
149 buffer = pa_xmalloc(buffer_length = length);
150 memcpy(buffer, data, length);
155 /* This routine is called whenever the stream state changes */
156 static void stream_state_callback(pa_stream *s, void *userdata) {
159 switch (pa_stream_get_state(s)) {
160 case PA_STREAM_CREATING:
161 case PA_STREAM_TERMINATED:
164 case PA_STREAM_READY:
166 const pa_buffer_attr *a;
167 char cmt[PA_CHANNEL_MAP_SNPRINT_MAX], sst[PA_SAMPLE_SPEC_SNPRINT_MAX];
169 fprintf(stderr, "Stream successfully created.\n");
171 if (!(a = pa_stream_get_buffer_attr(s)))
172 fprintf(stderr, "pa_stream_get_buffer_attr() failed: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
175 if (mode == PLAYBACK)
176 fprintf(stderr, "Buffer metrics: maxlength=%u, tlength=%u, prebuf=%u, minreq=%u\n", a->maxlength, a->tlength, a->prebuf, a->minreq);
178 assert(mode == RECORD);
179 fprintf(stderr, "Buffer metrics: maxlength=%u, fragsize=%u\n", a->maxlength, a->fragsize);
183 fprintf(stderr, "Using sample spec '%s', channel map '%s'.\n",
184 pa_sample_spec_snprint(sst, sizeof(sst), pa_stream_get_sample_spec(s)),
185 pa_channel_map_snprint(cmt, sizeof(cmt), pa_stream_get_channel_map(s)));
187 fprintf(stderr, "Connected to device %s (%u, %ssuspended).\n",
188 pa_stream_get_device_name(s),
189 pa_stream_get_device_index(s),
190 pa_stream_is_suspended(s) ? "" : "not ");
195 case PA_STREAM_FAILED:
197 fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
202 static void stream_suspended_callback(pa_stream *s, void *userdata) {
206 if (pa_stream_is_suspended(s))
207 fprintf(stderr, "Stream device suspended.\n");
209 fprintf(stderr, "Stream device resumed.\n");
213 static void stream_moved_callback(pa_stream *s, void *userdata) {
217 fprintf(stderr, "Stream moved to device %s (%u, %ssuspended).\n", pa_stream_get_device_name(s), pa_stream_get_device_index(s), pa_stream_is_suspended(s) ? "" : "not ");
220 /* This is called whenever the context status changes */
221 static void context_state_callback(pa_context *c, void *userdata) {
224 switch (pa_context_get_state(c)) {
225 case PA_CONTEXT_CONNECTING:
226 case PA_CONTEXT_AUTHORIZING:
227 case PA_CONTEXT_SETTING_NAME:
230 case PA_CONTEXT_READY: {
237 fprintf(stderr, "Connection established.\n");
239 if (!(stream = pa_stream_new(c, stream_name, &sample_spec, channel_map_set ? &channel_map : NULL))) {
240 fprintf(stderr, "pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(c)));
244 pa_stream_set_state_callback(stream, stream_state_callback, NULL);
245 pa_stream_set_write_callback(stream, stream_write_callback, NULL);
246 pa_stream_set_read_callback(stream, stream_read_callback, NULL);
247 pa_stream_set_suspended_callback(stream, stream_suspended_callback, NULL);
248 pa_stream_set_moved_callback(stream, stream_moved_callback, NULL);
250 if (mode == PLAYBACK) {
252 if ((r = pa_stream_connect_playback(stream, device, NULL, flags, pa_cvolume_set(&cv, sample_spec.channels, volume), NULL)) < 0) {
253 fprintf(stderr, "pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(c)));
258 if ((r = pa_stream_connect_record(stream, device, NULL, flags)) < 0) {
259 fprintf(stderr, "pa_stream_connect_record() failed: %s\n", pa_strerror(pa_context_errno(c)));
267 case PA_CONTEXT_TERMINATED:
271 case PA_CONTEXT_FAILED:
273 fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
284 /* Connection draining complete */
285 static void context_drain_complete(pa_context*c, void *userdata) {
286 pa_context_disconnect(c);
289 /* Stream draining complete */
290 static void stream_drain_complete(pa_stream*s, int success, void *userdata) {
294 fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
299 fprintf(stderr, "Playback stream drained.\n");
301 pa_stream_disconnect(stream);
302 pa_stream_unref(stream);
305 if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
306 pa_context_disconnect(context);
309 fprintf(stderr, "Draining connection to server.\n");
313 /* New data on STDIN **/
314 static void stdin_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
318 assert(a == mainloop_api);
320 assert(stdio_event == e);
323 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
327 if (!stream || pa_stream_get_state(stream) != PA_STREAM_READY || !(l = w = pa_stream_writable_size(stream)))
330 buffer = pa_xmalloc(l);
332 if ((r = read(fd, buffer, l)) <= 0) {
335 fprintf(stderr, "Got EOF.\n");
340 if (!(o = pa_stream_drain(stream, stream_drain_complete, NULL))) {
341 fprintf(stderr, "pa_stream_drain(): %s\n", pa_strerror(pa_context_errno(context)));
346 pa_operation_unref(o);
351 fprintf(stderr, "read() failed: %s\n", strerror(errno));
355 mainloop_api->io_free(stdio_event);
367 /* Some data may be written to STDOUT */
368 static void stdout_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
371 assert(a == mainloop_api);
373 assert(stdio_event == e);
376 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
380 assert(buffer_length);
382 if ((r = write(fd, (uint8_t*) buffer+buffer_index, buffer_length)) <= 0) {
383 fprintf(stderr, "write() failed: %s\n", strerror(errno));
386 mainloop_api->io_free(stdio_event);
394 if (!buffer_length) {
397 buffer_length = buffer_index = 0;
401 /* UNIX signal to quit recieved */
402 static void exit_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
404 fprintf(stderr, "Got signal, exiting.\n");
408 /* Show the current latency */
409 static void stream_update_timing_callback(pa_stream *s, int success, void *userdata) {
410 pa_usec_t latency, usec;
416 pa_stream_get_time(s, &usec) < 0 ||
417 pa_stream_get_latency(s, &latency, &negative) < 0) {
418 fprintf(stderr, "Failed to get latency: %s\n", pa_strerror(pa_context_errno(context)));
423 fprintf(stderr, "Time: %0.3f sec; Latency: %0.0f usec. \r",
424 (float) usec / 1000000,
425 (float) latency * (negative?-1:1));
428 /* Someone requested that the latency is shown */
429 static void sigusr1_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
434 pa_operation_unref(pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL));
437 static void time_event_callback(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
440 if (stream && pa_stream_get_state(stream) == PA_STREAM_READY) {
442 if (!(o = pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL)))
443 fprintf(stderr, "pa_stream_update_timing_info() failed: %s\n", pa_strerror(pa_context_errno(context)));
445 pa_operation_unref(o);
448 pa_gettimeofday(&next);
449 pa_timeval_add(&next, TIME_EVENT_USEC);
451 m->time_restart(e, &next);
454 static void help(const char *argv0) {
456 printf("%s [options]\n\n"
457 " -h, --help Show this help\n"
458 " --version Show version\n\n"
459 " -r, --record Create a connection for recording\n"
460 " -p, --playback Create a connection for playback\n\n"
461 " -v, --verbose Enable verbose operations\n\n"
462 " -s, --server=SERVER The name of the server to connect to\n"
463 " -d, --device=DEVICE The name of the sink/source to connect to\n"
464 " -n, --client-name=NAME How to call this client on the server\n"
465 " --stream-name=NAME How to call this stream on the server\n"
466 " --volume=VOLUME Specify the initial (linear) volume in range 0...65536\n"
467 " --rate=SAMPLERATE The sample rate in Hz (defaults to 44100)\n"
468 " --format=SAMPLEFORMAT The sample type, one of s16le, s16be, u8, float32le,\n"
469 " float32be, ulaw, alaw (defaults to s16ne)\n"
470 " --channels=CHANNELS The number of channels, 1 for mono, 2 for stereo\n"
472 " --channel-map=CHANNELMAP Channel map to use instead of the default\n"
473 " --fix-format Take the sample format from the sink the stream is\n"
474 " being connected to.\n"
475 " --fix-rate Take the sampling rate from the sink the stream is\n"
476 " being connected to.\n"
477 " --fix-channels Take the number of channels and the channel map\n"
478 " from the sink the stream is being connected to.\n"
479 " --no-remix Don't upmix or downmix channels.\n"
480 " --no-remap Map channels by index instead of name.\n"
500 int main(int argc, char *argv[]) {
501 pa_mainloop* m = NULL;
503 char *bn, *server = NULL;
504 pa_time_event *time_event = NULL;
506 static const struct option long_options[] = {
507 {"record", 0, NULL, 'r'},
508 {"playback", 0, NULL, 'p'},
509 {"device", 1, NULL, 'd'},
510 {"server", 1, NULL, 's'},
511 {"client-name", 1, NULL, 'n'},
512 {"stream-name", 1, NULL, ARG_STREAM_NAME},
513 {"version", 0, NULL, ARG_VERSION},
514 {"help", 0, NULL, 'h'},
515 {"verbose", 0, NULL, 'v'},
516 {"volume", 1, NULL, ARG_VOLUME},
517 {"rate", 1, NULL, ARG_SAMPLERATE},
518 {"format", 1, NULL, ARG_SAMPLEFORMAT},
519 {"channels", 1, NULL, ARG_CHANNELS},
520 {"channel-map", 1, NULL, ARG_CHANNELMAP},
521 {"fix-format", 0, NULL, ARG_FIX_FORMAT},
522 {"fix-rate", 0, NULL, ARG_FIX_RATE},
523 {"fix-channels",0, NULL, ARG_FIX_CHANNELS},
524 {"no-remap", 0, NULL, ARG_NO_REMAP},
525 {"no-remix", 0, NULL, ARG_NO_REMIX},
529 if (!(bn = strrchr(argv[0], '/')))
534 if (strstr(bn, "rec") || strstr(bn, "mon"))
536 else if (strstr(bn, "cat") || strstr(bn, "play"))
539 while ((c = getopt_long(argc, argv, "rpd:s:n:hv", long_options, NULL)) != -1) {
548 printf("pacat "PACKAGE_VERSION"\nCompiled with libpulse %s\nLinked with libpulse %s\n", pa_get_headers_version(), pa_get_library_version());
562 device = pa_xstrdup(optarg);
567 server = pa_xstrdup(optarg);
571 pa_xfree(client_name);
572 client_name = pa_xstrdup(optarg);
575 case ARG_STREAM_NAME:
576 pa_xfree(stream_name);
577 stream_name = pa_xstrdup(optarg);
585 int v = atoi(optarg);
586 volume = v < 0 ? 0 : v;
591 sample_spec.channels = atoi(optarg);
594 case ARG_SAMPLEFORMAT:
595 sample_spec.format = pa_parse_sample_format(optarg);
599 sample_spec.rate = atoi(optarg);
603 if (!pa_channel_map_parse(&channel_map, optarg)) {
604 fprintf(stderr, "Invalid channel map\n");
611 case ARG_FIX_CHANNELS:
612 flags |= PA_STREAM_FIX_CHANNELS;
616 flags |= PA_STREAM_FIX_RATE;
620 flags |= PA_STREAM_FIX_FORMAT;
624 flags |= PA_STREAM_NO_REMIX_CHANNELS;
628 flags |= PA_STREAM_NO_REMAP_CHANNELS;
636 if (!pa_sample_spec_valid(&sample_spec)) {
637 fprintf(stderr, "Invalid sample specification\n");
641 if (channel_map_set && channel_map.channels != sample_spec.channels) {
642 fprintf(stderr, "Channel map doesn't match sample specification\n");
647 char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
648 pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
649 fprintf(stderr, "Opening a %s stream with sample specification '%s'.\n", mode == RECORD ? "recording" : "playback", t);
652 if (!(optind >= argc)) {
653 if (optind+1 == argc) {
656 if ((fd = open(argv[optind], mode == PLAYBACK ? O_RDONLY : O_WRONLY|O_TRUNC|O_CREAT, 0666)) < 0) {
657 fprintf(stderr, "open(): %s\n", strerror(errno));
661 if (dup2(fd, mode == PLAYBACK ? 0 : 1) < 0) {
662 fprintf(stderr, "dup2(): %s\n", strerror(errno));
669 stream_name = pa_xstrdup(argv[optind]);
672 fprintf(stderr, "Too many arguments.\n");
678 client_name = pa_xstrdup(bn);
681 stream_name = pa_xstrdup(client_name);
683 /* Set up a new main loop */
684 if (!(m = pa_mainloop_new())) {
685 fprintf(stderr, "pa_mainloop_new() failed.\n");
689 mainloop_api = pa_mainloop_get_api(m);
691 r = pa_signal_init(mainloop_api);
693 pa_signal_new(SIGINT, exit_signal_callback, NULL);
694 pa_signal_new(SIGTERM, exit_signal_callback, NULL);
696 pa_signal_new(SIGUSR1, sigusr1_signal_callback, NULL);
699 signal(SIGPIPE, SIG_IGN);
702 if (!(stdio_event = mainloop_api->io_new(mainloop_api,
703 mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
704 mode == PLAYBACK ? PA_IO_EVENT_INPUT : PA_IO_EVENT_OUTPUT,
705 mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
706 fprintf(stderr, "io_new() failed.\n");
710 /* Create a new connection context */
711 if (!(context = pa_context_new(mainloop_api, client_name))) {
712 fprintf(stderr, "pa_context_new() failed.\n");
716 pa_context_set_state_callback(context, context_state_callback, NULL);
718 /* Connect the context */
719 pa_context_connect(context, server, 0, NULL);
724 pa_gettimeofday(&tv);
725 pa_timeval_add(&tv, TIME_EVENT_USEC);
727 if (!(time_event = mainloop_api->time_new(mainloop_api, &tv, time_event_callback, NULL))) {
728 fprintf(stderr, "time_new() failed.\n");
733 /* Run the main loop */
734 if (pa_mainloop_run(m, &ret) < 0) {
735 fprintf(stderr, "pa_mainloop_run() failed.\n");
741 pa_stream_unref(stream);
744 pa_context_unref(context);
747 assert(mainloop_api);
748 mainloop_api->io_free(stdio_event);
752 assert(mainloop_api);
753 mainloop_api->time_free(time_event);
765 pa_xfree(client_name);
766 pa_xfree(stream_name);