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
35 #include <polyp/polypaudio.h>
36 #include <polyp/mainloop.h>
37 #include <polyp/mainloop-signal.h>
39 #if PA_API_VERSION != 8
40 #error Invalid Polypaudio API version
43 static enum { RECORD, PLAYBACK } mode = PLAYBACK;
45 static pa_context *context = NULL;
46 static pa_stream *stream = NULL;
47 static pa_mainloop_api *mainloop_api = NULL;
49 static void *buffer = NULL;
50 static size_t buffer_length = 0, buffer_index = 0;
52 static pa_io_event* stdio_event = NULL;
54 static char *stream_name = NULL, *client_name = NULL, *device = NULL;
56 static int verbose = 0;
57 static pa_volume_t volume = PA_VOLUME_NORM;
59 static pa_sample_spec sample_spec = {
60 .format = PA_SAMPLE_S16LE,
65 /* A shortcut for terminating the application */
66 static void quit(int ret) {
68 mainloop_api->quit(mainloop_api, ret);
71 /* Write some data to the stream */
72 static void do_stream_write(size_t length) {
76 if (!buffer || !buffer_length)
80 if (l > buffer_length)
83 pa_stream_write(stream, (uint8_t*) buffer + buffer_index, l, NULL, 0, PA_SEEK_RELATIVE);
90 buffer_index = buffer_length = 0;
94 /* This is called whenever new data may be written to the stream */
95 static void stream_write_callback(pa_stream *s, size_t length, void *userdata) {
99 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_INPUT);
104 do_stream_write(length);
107 /* This is called whenever new data may is available */
108 static void stream_read_callback(pa_stream *s, size_t length, void *userdata) {
113 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_OUTPUT);
115 pa_stream_peek(s, &data, &length);
116 assert(data && length);
119 fprintf(stderr, "Buffer overrun, dropping incoming data\n");
124 buffer = malloc(buffer_length = length);
126 memcpy(buffer, data, length);
131 /* This routine is called whenever the stream state changes */
132 static void stream_state_callback(pa_stream *s, void *userdata) {
135 switch (pa_stream_get_state(s)) {
136 case PA_STREAM_CREATING:
137 case PA_STREAM_TERMINATED:
140 case PA_STREAM_READY:
142 fprintf(stderr, "Stream successfully created\n");
145 case PA_STREAM_FAILED:
147 fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
152 /* This is called whenever the context status changes */
153 static void context_state_callback(pa_context *c, void *userdata) {
156 switch (pa_context_get_state(c)) {
157 case PA_CONTEXT_CONNECTING:
158 case PA_CONTEXT_AUTHORIZING:
159 case PA_CONTEXT_SETTING_NAME:
162 case PA_CONTEXT_READY:
164 assert(c && !stream);
167 fprintf(stderr, "Connection established.\n");
169 stream = pa_stream_new(c, stream_name, &sample_spec, NULL);
172 pa_stream_set_state_callback(stream, stream_state_callback, NULL);
173 pa_stream_set_write_callback(stream, stream_write_callback, NULL);
174 pa_stream_set_read_callback(stream, stream_read_callback, NULL);
176 if (mode == PLAYBACK) {
178 pa_stream_connect_playback(stream, device, NULL, 0, pa_cvolume_set(&cv, PA_CHANNELS_MAX, volume), NULL);
180 pa_stream_connect_record(stream, device, NULL, 0);
184 case PA_CONTEXT_TERMINATED:
188 case PA_CONTEXT_FAILED:
190 fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
195 /* Connection draining complete */
196 static void context_drain_complete(pa_context*c, void *userdata) {
197 pa_context_disconnect(c);
200 /* Stream draining complete */
201 static void stream_drain_complete(pa_stream*s, int success, void *userdata) {
205 fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
210 fprintf(stderr, "Playback stream drained.\n");
212 pa_stream_disconnect(stream);
213 pa_stream_unref(stream);
216 if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
217 pa_context_disconnect(context);
219 pa_operation_unref(o);
222 fprintf(stderr, "Draining connection to server.\n");
226 /* New data on STDIN **/
227 static void stdin_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
230 assert(a == mainloop_api && e && stdio_event == e);
233 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
237 if (!stream || pa_stream_get_state(stream) != PA_STREAM_READY || !(l = w = pa_stream_writable_size(stream)))
242 if ((r = read(fd, buffer, l)) <= 0) {
245 fprintf(stderr, "Got EOF.\n");
246 pa_operation_unref(pa_stream_drain(stream, stream_drain_complete, NULL));
248 fprintf(stderr, "read() failed: %s\n", strerror(errno));
252 mainloop_api->io_free(stdio_event);
264 /* Some data may be written to STDOUT */
265 static void stdout_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
267 assert(a == mainloop_api && e && stdio_event == e);
270 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
274 assert(buffer_length);
276 if ((r = write(fd, (uint8_t*) buffer+buffer_index, buffer_length)) <= 0) {
277 fprintf(stderr, "write() failed: %s\n", strerror(errno));
280 mainloop_api->io_free(stdio_event);
288 if (!buffer_length) {
291 buffer_length = buffer_index = 0;
295 /* UNIX signal to quit recieved */
296 static void exit_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
298 fprintf(stderr, "Got signal, exiting.\n");
303 /* Show the current latency */
304 static void stream_get_latency_callback(pa_stream *s, const pa_latency_info *i, void *userdata) {
310 fprintf(stderr, "Failed to get latency: %s\n", pa_strerror(pa_context_errno(context)));
315 total = pa_stream_get_latency(s, i, &negative);
317 fprintf(stderr, "Latency: buffer: %0.0f usec; sink: %0.0f usec; source: %0.0f usec; transport: %0.0f usec; total: %0.0f usec; synchronized clocks: %s.\n",
318 (float) i->buffer_usec, (float) i->sink_usec, (float) i->source_usec, (float) i->transport_usec, (float) total * (negative?-1:1),
319 i->synchronized_clocks ? "yes" : "no");
322 /* Someone requested that the latency is shown */
323 static void sigusr1_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
324 fprintf(stderr, "Got SIGUSR1, requesting latency.\n");
325 pa_operation_unref(pa_stream_get_latency_info(stream, stream_get_latency_callback, NULL));
329 static void help(const char *argv0) {
331 printf("%s [options]\n\n"
332 " -h, --help Show this help\n"
333 " --version Show version\n\n"
334 " -r, --record Create a connection for recording\n"
335 " -p, --playback Create a connection for playback\n\n"
336 " -v, --verbose Enable verbose operations\n\n"
337 " -s, --server=SERVER The name of the server to connect to\n"
338 " -d, --device=DEVICE The name of the sink/source to connect to\n"
339 " -n, --client-name=NAME How to call this client on the server\n"
340 " --stream-name=NAME How to call this stream on the server\n"
341 " --volume=VOLUME Specify the initial (linear) volume in range 0...256\n"
342 " --rate=SAMPLERATE The sample rate in Hz (defaults to 44100)\n"
343 " --format=SAMPLEFORMAT The sample type, one of s16le, s16be, u8, float32le,\n"
344 " float32be, ulaw, alaw (defaults to s16ne)\n"
345 " --channels=CHANNELS The number of channels, 1 for mono, 2 for stereo\n"
346 " (defaults to 2)\n",
359 int main(int argc, char *argv[]) {
360 pa_mainloop* m = NULL;
362 char *bn, *server = NULL;
364 static const struct option long_options[] = {
365 {"record", 0, NULL, 'r'},
366 {"playback", 0, NULL, 'p'},
367 {"device", 1, NULL, 'd'},
368 {"server", 1, NULL, 's'},
369 {"client-name", 1, NULL, 'n'},
370 {"stream-name", 1, NULL, ARG_STREAM_NAME},
371 {"version", 0, NULL, ARG_VERSION},
372 {"help", 0, NULL, 'h'},
373 {"verbose", 0, NULL, 'v'},
374 {"volume", 1, NULL, ARG_VOLUME},
375 {"rate", 1, NULL, ARG_SAMPLERATE},
376 {"format", 1, NULL, ARG_SAMPLEFORMAT},
377 {"channels", 1, NULL, ARG_CHANNELS},
381 if (!(bn = strrchr(argv[0], '/')))
386 if (strstr(bn, "rec") || strstr(bn, "mon"))
388 else if (strstr(bn, "cat") || strstr(bn, "play"))
391 while ((c = getopt_long(argc, argv, "rpd:s:n:hv", long_options, NULL)) != -1) {
400 printf("pacat "PACKAGE_VERSION"\nCompiled with libpolyp %s\nLinked with libpolyp %s\n", pa_get_headers_version(), pa_get_library_version());
414 device = strdup(optarg);
419 server = strdup(optarg);
424 client_name = strdup(optarg);
427 case ARG_STREAM_NAME:
429 stream_name = strdup(optarg);
437 int v = atoi(optarg);
438 volume = v < 0 ? 0 : v;
443 sample_spec.channels = atoi(optarg);
446 case ARG_SAMPLEFORMAT:
447 sample_spec.format = pa_parse_sample_format(optarg);
451 sample_spec.rate = atoi(optarg);
460 client_name = strdup(bn);
463 stream_name = strdup(client_name);
465 if (!pa_sample_spec_valid(&sample_spec)) {
466 fprintf(stderr, "Invalid sample specification\n");
471 char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
472 pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
473 fprintf(stderr, "Opening a %s stream with sample specification '%s'.\n", mode == RECORD ? "recording" : "playback", t);
476 /* Set up a new main loop */
477 if (!(m = pa_mainloop_new())) {
478 fprintf(stderr, "pa_mainloop_new() failed.\n");
482 mainloop_api = pa_mainloop_get_api(m);
484 r = pa_signal_init(mainloop_api);
486 pa_signal_new(SIGINT, exit_signal_callback, NULL);
487 pa_signal_new(SIGTERM, exit_signal_callback, NULL);
489 pa_signal_new(SIGUSR1, sigusr1_signal_callback, NULL);
492 signal(SIGPIPE, SIG_IGN);
495 if (!(stdio_event = mainloop_api->io_new(mainloop_api,
496 mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
497 mode == PLAYBACK ? PA_IO_EVENT_INPUT : PA_IO_EVENT_OUTPUT,
498 mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
499 fprintf(stderr, "source_io() failed.\n");
503 /* Create a new connection context */
504 if (!(context = pa_context_new(mainloop_api, client_name))) {
505 fprintf(stderr, "pa_context_new() failed.\n");
509 pa_context_set_state_callback(context, context_state_callback, NULL);
511 /* Connect the context */
512 pa_context_connect(context, server, 0, NULL);
514 /* Run the main loop */
515 if (pa_mainloop_run(m, &ret) < 0) {
516 fprintf(stderr, "pa_mainloop_run() failed.\n");
522 pa_stream_unref(stream);
525 pa_context_unref(context);
528 assert(mainloop_api);
529 mainloop_api->io_free(stdio_event);