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 != 9
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 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 = malloc(buffer_length = length);
146 memcpy(buffer, data, length);
151 /* This routine is called whenever the stream state changes */
152 static void stream_state_callback(pa_stream *s, void *userdata) {
155 switch (pa_stream_get_state(s)) {
156 case PA_STREAM_CREATING:
157 case PA_STREAM_TERMINATED:
160 case PA_STREAM_READY:
162 fprintf(stderr, "Stream successfully created.\n");
165 case PA_STREAM_FAILED:
167 fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
172 /* This is called whenever the context status changes */
173 static void context_state_callback(pa_context *c, void *userdata) {
176 switch (pa_context_get_state(c)) {
177 case PA_CONTEXT_CONNECTING:
178 case PA_CONTEXT_AUTHORIZING:
179 case PA_CONTEXT_SETTING_NAME:
182 case PA_CONTEXT_READY: {
185 assert(c && !stream);
188 fprintf(stderr, "Connection established.\n");
190 if (!(stream = pa_stream_new(c, stream_name, &sample_spec, channel_map_set ? &channel_map : NULL))) {
191 fprintf(stderr, "pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(c)));
195 pa_stream_set_state_callback(stream, stream_state_callback, NULL);
196 pa_stream_set_write_callback(stream, stream_write_callback, NULL);
197 pa_stream_set_read_callback(stream, stream_read_callback, NULL);
199 if (mode == PLAYBACK) {
201 if ((r = pa_stream_connect_playback(stream, device, NULL, 0, pa_cvolume_set(&cv, sample_spec.channels, volume), NULL)) < 0) {
202 fprintf(stderr, "pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(c)));
207 if ((r = pa_stream_connect_record(stream, device, NULL, 0)) < 0) {
208 fprintf(stderr, "pa_stream_connect_record() failed: %s\n", pa_strerror(pa_context_errno(c)));
216 case PA_CONTEXT_TERMINATED:
220 case PA_CONTEXT_FAILED:
222 fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
233 /* Connection draining complete */
234 static void context_drain_complete(pa_context*c, void *userdata) {
235 pa_context_disconnect(c);
238 /* Stream draining complete */
239 static void stream_drain_complete(pa_stream*s, int success, void *userdata) {
243 fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
248 fprintf(stderr, "Playback stream drained.\n");
250 pa_stream_disconnect(stream);
251 pa_stream_unref(stream);
254 if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
255 pa_context_disconnect(context);
258 fprintf(stderr, "Draining connection to server.\n");
262 /* New data on STDIN **/
263 static void stdin_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
266 assert(a == mainloop_api && e && stdio_event == e);
269 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
273 if (!stream || pa_stream_get_state(stream) != PA_STREAM_READY || !(l = w = pa_stream_writable_size(stream)))
278 if ((r = read(fd, buffer, l)) <= 0) {
283 fprintf(stderr, "Got EOF.\n");
285 if (!(o = pa_stream_drain(stream, stream_drain_complete, NULL))) {
286 fprintf(stderr, "pa_stream_drain(): %s\n", pa_strerror(pa_context_errno(context)));
291 pa_operation_unref(o);
293 fprintf(stderr, "read() failed: %s\n", strerror(errno));
297 mainloop_api->io_free(stdio_event);
309 /* Some data may be written to STDOUT */
310 static void stdout_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
312 assert(a == mainloop_api && e && stdio_event == e);
315 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
319 assert(buffer_length);
321 if ((r = write(fd, (uint8_t*) buffer+buffer_index, buffer_length)) <= 0) {
322 fprintf(stderr, "write() failed: %s\n", strerror(errno));
325 mainloop_api->io_free(stdio_event);
333 if (!buffer_length) {
336 buffer_length = buffer_index = 0;
340 /* UNIX signal to quit recieved */
341 static void exit_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
343 fprintf(stderr, "Got signal, exiting.\n");
348 /* Show the current latency */
349 static void stream_update_timing_callback(pa_stream *s, int success, void *userdata) {
350 pa_usec_t latency, usec;
356 pa_stream_get_time(s, &usec) < 0 ||
357 pa_stream_get_latency(s, &latency, &negative) < 0) {
358 fprintf(stderr, "Failed to get latency: %s\n", pa_strerror(pa_context_errno(context)));
363 fprintf(stderr, "Time: %0.3f sec; Latency: %0.0f usec. \r",
364 (float) usec / 1000000,
365 (float) latency * (negative?-1:1));
368 /* Someone requested that the latency is shown */
369 static void sigusr1_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
374 pa_operation_unref(pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL));
377 static void time_event_callback(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
380 if (stream && pa_stream_get_state(stream) == PA_STREAM_READY) {
382 if (!(o = pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL)))
383 fprintf(stderr, "pa_stream_update_timing_info() failed: %s\n", pa_strerror(pa_context_errno(context)));
385 pa_operation_unref(o);
388 pa_gettimeofday(&next);
389 pa_timeval_add(&next, TIME_EVENT_USEC);
391 m->time_restart(e, &next);
394 static void help(const char *argv0) {
396 printf("%s [options]\n\n"
397 " -h, --help Show this help\n"
398 " --version Show version\n\n"
399 " -r, --record Create a connection for recording\n"
400 " -p, --playback Create a connection for playback\n\n"
401 " -v, --verbose Enable verbose operations\n\n"
402 " -s, --server=SERVER The name of the server to connect to\n"
403 " -d, --device=DEVICE The name of the sink/source to connect to\n"
404 " -n, --client-name=NAME How to call this client on the server\n"
405 " --stream-name=NAME How to call this stream on the server\n"
406 " --volume=VOLUME Specify the initial (linear) volume in range 0...65536\n"
407 " --rate=SAMPLERATE The sample rate in Hz (defaults to 44100)\n"
408 " --format=SAMPLEFORMAT The sample type, one of s16le, s16be, u8, float32le,\n"
409 " float32be, ulaw, alaw (defaults to s16ne)\n"
410 " --channels=CHANNELS The number of channels, 1 for mono, 2 for stereo\n"
412 " --channel-map=CHANNELMAP Channel map to use instead of the default\n",
426 int main(int argc, char *argv[]) {
427 pa_mainloop* m = NULL;
429 char *bn, *server = NULL;
430 pa_time_event *time_event = NULL;
432 static const struct option long_options[] = {
433 {"record", 0, NULL, 'r'},
434 {"playback", 0, NULL, 'p'},
435 {"device", 1, NULL, 'd'},
436 {"server", 1, NULL, 's'},
437 {"client-name", 1, NULL, 'n'},
438 {"stream-name", 1, NULL, ARG_STREAM_NAME},
439 {"version", 0, NULL, ARG_VERSION},
440 {"help", 0, NULL, 'h'},
441 {"verbose", 0, NULL, 'v'},
442 {"volume", 1, NULL, ARG_VOLUME},
443 {"rate", 1, NULL, ARG_SAMPLERATE},
444 {"format", 1, NULL, ARG_SAMPLEFORMAT},
445 {"channels", 1, NULL, ARG_CHANNELS},
446 {"channel-map", 1, NULL, ARG_CHANNELMAP},
450 if (!(bn = strrchr(argv[0], '/')))
455 if (strstr(bn, "rec") || strstr(bn, "mon"))
457 else if (strstr(bn, "cat") || strstr(bn, "play"))
460 while ((c = getopt_long(argc, argv, "rpd:s:n:hv", long_options, NULL)) != -1) {
469 printf("pacat "PACKAGE_VERSION"\nCompiled with libpolyp %s\nLinked with libpolyp %s\n", pa_get_headers_version(), pa_get_library_version());
483 device = strdup(optarg);
488 server = strdup(optarg);
493 client_name = strdup(optarg);
496 case ARG_STREAM_NAME:
498 stream_name = strdup(optarg);
506 int v = atoi(optarg);
507 volume = v < 0 ? 0 : v;
512 sample_spec.channels = atoi(optarg);
515 case ARG_SAMPLEFORMAT:
516 sample_spec.format = pa_parse_sample_format(optarg);
520 sample_spec.rate = atoi(optarg);
524 if (!pa_channel_map_parse(&channel_map, optarg)) {
525 fprintf(stderr, "Invalid channel map\n");
537 if (!pa_sample_spec_valid(&sample_spec)) {
538 fprintf(stderr, "Invalid sample specification\n");
542 if (channel_map_set && channel_map.channels != sample_spec.channels) {
543 fprintf(stderr, "Channel map doesn't match sample specification\n");
548 char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
549 pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
550 fprintf(stderr, "Opening a %s stream with sample specification '%s'.\n", mode == RECORD ? "recording" : "playback", t);
553 if (!(optind >= argc)) {
554 if (optind+1 == argc) {
557 if ((fd = open(argv[optind], mode == PLAYBACK ? O_RDONLY : O_WRONLY|O_TRUNC|O_CREAT, 0666)) < 0) {
558 fprintf(stderr, "open(): %s\n", strerror(errno));
562 if (dup2(fd, mode == PLAYBACK ? 0 : 1) < 0) {
563 fprintf(stderr, "dup2(): %s\n", strerror(errno));
570 stream_name = strdup(argv[optind]);
573 fprintf(stderr, "Too many arguments.\n");
579 client_name = strdup(bn);
582 stream_name = strdup(client_name);
584 /* Set up a new main loop */
585 if (!(m = pa_mainloop_new())) {
586 fprintf(stderr, "pa_mainloop_new() failed.\n");
590 mainloop_api = pa_mainloop_get_api(m);
592 r = pa_signal_init(mainloop_api);
594 pa_signal_new(SIGINT, exit_signal_callback, NULL);
595 pa_signal_new(SIGTERM, exit_signal_callback, NULL);
597 pa_signal_new(SIGUSR1, sigusr1_signal_callback, NULL);
600 signal(SIGPIPE, SIG_IGN);
603 if (!(stdio_event = mainloop_api->io_new(mainloop_api,
604 mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
605 mode == PLAYBACK ? PA_IO_EVENT_INPUT : PA_IO_EVENT_OUTPUT,
606 mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
607 fprintf(stderr, "io_new() failed.\n");
611 /* Create a new connection context */
612 if (!(context = pa_context_new(mainloop_api, client_name))) {
613 fprintf(stderr, "pa_context_new() failed.\n");
617 pa_context_set_state_callback(context, context_state_callback, NULL);
619 /* Connect the context */
620 pa_context_connect(context, server, 0, NULL);
625 pa_gettimeofday(&tv);
626 pa_timeval_add(&tv, TIME_EVENT_USEC);
628 if (!(time_event = mainloop_api->time_new(mainloop_api, &tv, time_event_callback, NULL))) {
629 fprintf(stderr, "time_new() failed.\n");
634 /* Run the main loop */
635 if (pa_mainloop_run(m, &ret) < 0) {
636 fprintf(stderr, "pa_mainloop_run() failed.\n");
642 pa_stream_unref(stream);
645 pa_context_unref(context);
648 assert(mainloop_api);
649 mainloop_api->io_free(stdio_event);
653 assert(mainloop_api);
654 mainloop_api->time_free(time_event);