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 <polyp/mainloop.h>
38 #include <polyp/mainloop-signal.h>
39 #include <polypcore/util.h>
41 #define TIME_EVENT_USEC 50000
43 #if PA_API_VERSION != 8
44 #error Invalid Polypaudio 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 /* 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 = malloc(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, 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)))
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");
345 /* Show the current latency */
346 static void stream_update_timing_callback(pa_stream *s, int success, void *userdata) {
347 pa_usec_t latency, usec;
353 pa_stream_get_time(s, &usec) < 0 ||
354 pa_stream_get_latency(s, &latency, &negative) < 0) {
355 fprintf(stderr, "Failed to get latency: %s\n", pa_strerror(pa_context_errno(context)));
360 fprintf(stderr, "Time: %0.3f sec; Latency: %0.0f usec. \r",
361 (float) usec / 1000000,
362 (float) latency * (negative?-1:1));
365 /* Someone requested that the latency is shown */
366 static void sigusr1_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
371 pa_operation_unref(pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL));
374 static void time_event_callback(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
377 if (stream && pa_stream_get_state(stream) == PA_STREAM_READY) {
379 if (!(o = pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL)))
380 fprintf(stderr, "pa_stream_update_timing_info() failed: %s\n", pa_strerror(pa_context_errno(context)));
382 pa_operation_unref(o);
385 pa_gettimeofday(&next);
386 pa_timeval_add(&next, TIME_EVENT_USEC);
388 m->time_restart(e, &next);
391 static void help(const char *argv0) {
393 printf("%s [options]\n\n"
394 " -h, --help Show this help\n"
395 " --version Show version\n\n"
396 " -r, --record Create a connection for recording\n"
397 " -p, --playback Create a connection for playback\n\n"
398 " -v, --verbose Enable verbose operations\n\n"
399 " -s, --server=SERVER The name of the server to connect to\n"
400 " -d, --device=DEVICE The name of the sink/source to connect to\n"
401 " -n, --client-name=NAME How to call this client on the server\n"
402 " --stream-name=NAME How to call this stream on the server\n"
403 " --volume=VOLUME Specify the initial (linear) volume in range 0...256\n"
404 " --rate=SAMPLERATE The sample rate in Hz (defaults to 44100)\n"
405 " --format=SAMPLEFORMAT The sample type, one of s16le, s16be, u8, float32le,\n"
406 " float32be, ulaw, alaw (defaults to s16ne)\n"
407 " --channels=CHANNELS The number of channels, 1 for mono, 2 for stereo\n"
408 " (defaults to 2)\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},
444 if (!(bn = strrchr(argv[0], '/')))
449 if (strstr(bn, "rec") || strstr(bn, "mon"))
451 else if (strstr(bn, "cat") || strstr(bn, "play"))
454 while ((c = getopt_long(argc, argv, "rpd:s:n:hv", long_options, NULL)) != -1) {
463 printf("pacat "PACKAGE_VERSION"\nCompiled with libpolyp %s\nLinked with libpolyp %s\n", pa_get_headers_version(), pa_get_library_version());
477 device = strdup(optarg);
482 server = strdup(optarg);
487 client_name = strdup(optarg);
490 case ARG_STREAM_NAME:
492 stream_name = strdup(optarg);
500 int v = atoi(optarg);
501 volume = v < 0 ? 0 : v;
506 sample_spec.channels = atoi(optarg);
509 case ARG_SAMPLEFORMAT:
510 sample_spec.format = pa_parse_sample_format(optarg);
514 sample_spec.rate = atoi(optarg);
523 client_name = strdup(bn);
526 stream_name = strdup(client_name);
528 if (!pa_sample_spec_valid(&sample_spec)) {
529 fprintf(stderr, "Invalid sample specification\n");
534 char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
535 pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
536 fprintf(stderr, "Opening a %s stream with sample specification '%s'.\n", mode == RECORD ? "recording" : "playback", t);
539 if (!(optind >= argc)) {
540 if (optind+1 == argc) {
543 if ((fd = open(argv[optind], mode == PLAYBACK ? O_RDONLY : O_WRONLY|O_TRUNC|O_CREAT, 0666)) < 0) {
544 fprintf(stderr, "open(): %s\n", strerror(errno));
548 if (dup2(fd, mode == PLAYBACK ? 0 : 1) < 0) {
549 fprintf(stderr, "dup2(): %s\n", strerror(errno));
555 fprintf(stderr, "Too many arguments.\n");
560 /* Set up a new main loop */
561 if (!(m = pa_mainloop_new())) {
562 fprintf(stderr, "pa_mainloop_new() failed.\n");
566 mainloop_api = pa_mainloop_get_api(m);
568 r = pa_signal_init(mainloop_api);
570 pa_signal_new(SIGINT, exit_signal_callback, NULL);
571 pa_signal_new(SIGTERM, exit_signal_callback, NULL);
573 pa_signal_new(SIGUSR1, sigusr1_signal_callback, NULL);
576 signal(SIGPIPE, SIG_IGN);
579 if (!(stdio_event = mainloop_api->io_new(mainloop_api,
580 mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
581 mode == PLAYBACK ? PA_IO_EVENT_INPUT : PA_IO_EVENT_OUTPUT,
582 mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
583 fprintf(stderr, "io_new() failed.\n");
587 /* Create a new connection context */
588 if (!(context = pa_context_new(mainloop_api, client_name))) {
589 fprintf(stderr, "pa_context_new() failed.\n");
593 pa_context_set_state_callback(context, context_state_callback, NULL);
595 /* Connect the context */
596 pa_context_connect(context, server, 0, NULL);
601 pa_gettimeofday(&tv);
602 pa_timeval_add(&tv, TIME_EVENT_USEC);
604 if (!(time_event = mainloop_api->time_new(mainloop_api, &tv, time_event_callback, NULL))) {
605 fprintf(stderr, "time_new() failed.\n");
610 /* Run the main loop */
611 if (pa_mainloop_run(m, &ret) < 0) {
612 fprintf(stderr, "pa_mainloop_run() failed.\n");
618 pa_stream_unref(stream);
621 pa_context_unref(context);
624 assert(mainloop_api);
625 mainloop_api->io_free(stdio_event);
629 assert(mainloop_api);
630 mainloop_api->time_free(time_event);