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 if (pa_stream_write(stream, (uint8_t*) buffer + buffer_index, l, NULL, 0, PA_SEEK_RELATIVE) < 0) {
84 fprintf(stderr, "pa_stream_write() failed: %s\n", pa_strerror(pa_context_errno(context)));
95 buffer_index = buffer_length = 0;
99 /* This is called whenever new data may be written to the stream */
100 static void stream_write_callback(pa_stream *s, size_t length, void *userdata) {
104 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_INPUT);
109 do_stream_write(length);
112 /* This is called whenever new data may is available */
113 static void stream_read_callback(pa_stream *s, size_t length, void *userdata) {
118 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_OUTPUT);
120 if (pa_stream_peek(s, &data, &length) < 0) {
121 fprintf(stderr, "pa_stream_peek() failed: %s\n", pa_strerror(pa_context_errno(context)));
126 assert(data && length);
129 fprintf(stderr, "Buffer overrun, dropping incoming data\n");
130 if (pa_stream_drop(s) < 0) {
131 fprintf(stderr, "pa_stream_drop() failed: %s\n", pa_strerror(pa_context_errno(context)));
137 buffer = malloc(buffer_length = length);
139 memcpy(buffer, data, length);
144 /* This routine is called whenever the stream state changes */
145 static void stream_state_callback(pa_stream *s, void *userdata) {
148 switch (pa_stream_get_state(s)) {
149 case PA_STREAM_CREATING:
150 case PA_STREAM_TERMINATED:
153 case PA_STREAM_READY:
155 fprintf(stderr, "Stream successfully created\n");
158 case PA_STREAM_FAILED:
160 fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
165 /* This is called whenever the context status changes */
166 static void context_state_callback(pa_context *c, void *userdata) {
169 switch (pa_context_get_state(c)) {
170 case PA_CONTEXT_CONNECTING:
171 case PA_CONTEXT_AUTHORIZING:
172 case PA_CONTEXT_SETTING_NAME:
175 case PA_CONTEXT_READY: {
178 assert(c && !stream);
181 fprintf(stderr, "Connection established.\n");
183 if (!(stream = pa_stream_new(c, stream_name, &sample_spec, NULL))) {
184 fprintf(stderr, "pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(c)));
188 pa_stream_set_state_callback(stream, stream_state_callback, NULL);
189 pa_stream_set_write_callback(stream, stream_write_callback, NULL);
190 pa_stream_set_read_callback(stream, stream_read_callback, NULL);
192 if (mode == PLAYBACK) {
194 if ((r = pa_stream_connect_playback(stream, device, NULL, 0, pa_cvolume_set(&cv, sample_spec.channels, volume), NULL)) < 0) {
195 fprintf(stderr, "pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(c)));
200 if ((r = pa_stream_connect_record(stream, device, NULL, 0)) < 0) {
201 fprintf(stderr, "pa_stream_connect_record() failed: %s\n", pa_strerror(pa_context_errno(c)));
209 case PA_CONTEXT_TERMINATED:
213 case PA_CONTEXT_FAILED:
215 fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
226 /* Connection draining complete */
227 static void context_drain_complete(pa_context*c, void *userdata) {
228 pa_context_disconnect(c);
231 /* Stream draining complete */
232 static void stream_drain_complete(pa_stream*s, int success, void *userdata) {
236 fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
241 fprintf(stderr, "Playback stream drained.\n");
243 pa_stream_disconnect(stream);
244 pa_stream_unref(stream);
247 if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
248 pa_context_disconnect(context);
251 fprintf(stderr, "Draining connection to server.\n");
255 /* New data on STDIN **/
256 static void stdin_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
259 assert(a == mainloop_api && e && stdio_event == e);
262 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
266 if (!stream || pa_stream_get_state(stream) != PA_STREAM_READY || !(l = w = pa_stream_writable_size(stream)))
271 if ((r = read(fd, buffer, l)) <= 0) {
276 fprintf(stderr, "Got EOF.\n");
278 if (!(o = pa_stream_drain(stream, stream_drain_complete, NULL))) {
279 fprintf(stderr, "pa_stream_drain(): %s\n", pa_strerror(pa_context_errno(context)));
284 pa_operation_unref(o);
286 fprintf(stderr, "read() failed: %s\n", strerror(errno));
290 mainloop_api->io_free(stdio_event);
302 /* Some data may be written to STDOUT */
303 static void stdout_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
305 assert(a == mainloop_api && e && stdio_event == e);
308 mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
312 assert(buffer_length);
314 if ((r = write(fd, (uint8_t*) buffer+buffer_index, buffer_length)) <= 0) {
315 fprintf(stderr, "write() failed: %s\n", strerror(errno));
318 mainloop_api->io_free(stdio_event);
326 if (!buffer_length) {
329 buffer_length = buffer_index = 0;
333 /* UNIX signal to quit recieved */
334 static void exit_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
336 fprintf(stderr, "Got signal, exiting.\n");
341 /* Show the current latency */
342 static void stream_get_latency_callback(pa_stream *s, const pa_latency_info *i, void *userdata) {
348 fprintf(stderr, "Failed to get latency: %s\n", pa_strerror(pa_context_errno(context)));
353 total = pa_stream_get_latency(s, i, &negative);
355 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",
356 (float) i->buffer_usec, (float) i->sink_usec, (float) i->source_usec, (float) i->transport_usec, (float) total * (negative?-1:1),
357 i->synchronized_clocks ? "yes" : "no");
360 /* Someone requested that the latency is shown */
361 static void sigusr1_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
362 fprintf(stderr, "Got SIGUSR1, requesting latency.\n");
363 pa_operation_unref(pa_stream_get_latency_info(stream, stream_get_latency_callback, NULL));
367 static void help(const char *argv0) {
369 printf("%s [options]\n\n"
370 " -h, --help Show this help\n"
371 " --version Show version\n\n"
372 " -r, --record Create a connection for recording\n"
373 " -p, --playback Create a connection for playback\n\n"
374 " -v, --verbose Enable verbose operations\n\n"
375 " -s, --server=SERVER The name of the server to connect to\n"
376 " -d, --device=DEVICE The name of the sink/source to connect to\n"
377 " -n, --client-name=NAME How to call this client on the server\n"
378 " --stream-name=NAME How to call this stream on the server\n"
379 " --volume=VOLUME Specify the initial (linear) volume in range 0...256\n"
380 " --rate=SAMPLERATE The sample rate in Hz (defaults to 44100)\n"
381 " --format=SAMPLEFORMAT The sample type, one of s16le, s16be, u8, float32le,\n"
382 " float32be, ulaw, alaw (defaults to s16ne)\n"
383 " --channels=CHANNELS The number of channels, 1 for mono, 2 for stereo\n"
384 " (defaults to 2)\n",
397 int main(int argc, char *argv[]) {
398 pa_mainloop* m = NULL;
400 char *bn, *server = NULL;
402 static const struct option long_options[] = {
403 {"record", 0, NULL, 'r'},
404 {"playback", 0, NULL, 'p'},
405 {"device", 1, NULL, 'd'},
406 {"server", 1, NULL, 's'},
407 {"client-name", 1, NULL, 'n'},
408 {"stream-name", 1, NULL, ARG_STREAM_NAME},
409 {"version", 0, NULL, ARG_VERSION},
410 {"help", 0, NULL, 'h'},
411 {"verbose", 0, NULL, 'v'},
412 {"volume", 1, NULL, ARG_VOLUME},
413 {"rate", 1, NULL, ARG_SAMPLERATE},
414 {"format", 1, NULL, ARG_SAMPLEFORMAT},
415 {"channels", 1, NULL, ARG_CHANNELS},
419 if (!(bn = strrchr(argv[0], '/')))
424 if (strstr(bn, "rec") || strstr(bn, "mon"))
426 else if (strstr(bn, "cat") || strstr(bn, "play"))
429 while ((c = getopt_long(argc, argv, "rpd:s:n:hv", long_options, NULL)) != -1) {
438 printf("pacat "PACKAGE_VERSION"\nCompiled with libpolyp %s\nLinked with libpolyp %s\n", pa_get_headers_version(), pa_get_library_version());
452 device = strdup(optarg);
457 server = strdup(optarg);
462 client_name = strdup(optarg);
465 case ARG_STREAM_NAME:
467 stream_name = strdup(optarg);
475 int v = atoi(optarg);
476 volume = v < 0 ? 0 : v;
481 sample_spec.channels = atoi(optarg);
484 case ARG_SAMPLEFORMAT:
485 sample_spec.format = pa_parse_sample_format(optarg);
489 sample_spec.rate = atoi(optarg);
498 client_name = strdup(bn);
501 stream_name = strdup(client_name);
503 if (!pa_sample_spec_valid(&sample_spec)) {
504 fprintf(stderr, "Invalid sample specification\n");
509 char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
510 pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
511 fprintf(stderr, "Opening a %s stream with sample specification '%s'.\n", mode == RECORD ? "recording" : "playback", t);
514 /* Set up a new main loop */
515 if (!(m = pa_mainloop_new())) {
516 fprintf(stderr, "pa_mainloop_new() failed.\n");
520 mainloop_api = pa_mainloop_get_api(m);
522 r = pa_signal_init(mainloop_api);
524 pa_signal_new(SIGINT, exit_signal_callback, NULL);
525 pa_signal_new(SIGTERM, exit_signal_callback, NULL);
527 pa_signal_new(SIGUSR1, sigusr1_signal_callback, NULL);
530 signal(SIGPIPE, SIG_IGN);
533 if (!(stdio_event = mainloop_api->io_new(mainloop_api,
534 mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
535 mode == PLAYBACK ? PA_IO_EVENT_INPUT : PA_IO_EVENT_OUTPUT,
536 mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
537 fprintf(stderr, "source_io() failed.\n");
541 /* Create a new connection context */
542 if (!(context = pa_context_new(mainloop_api, client_name))) {
543 fprintf(stderr, "pa_context_new() failed.\n");
547 pa_context_set_state_callback(context, context_state_callback, NULL);
549 /* Connect the context */
550 pa_context_connect(context, server, 0, NULL);
552 /* Run the main loop */
553 if (pa_mainloop_run(m, &ret) < 0) {
554 fprintf(stderr, "pa_mainloop_run() failed.\n");
560 pa_stream_unref(stream);
563 pa_context_unref(context);
566 assert(mainloop_api);
567 mainloop_api->io_free(stdio_event);