code.delx.au - pulseaudio/blob - src/utils/pacat.c

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of PulseAudio.
   5
   6   Copyright 2004-2006 Lennart Poettering
   7   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   8
   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.
  13
  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.
  18
  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
  22   USA.
  23 ***/
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include <config.h>
  27 #endif
  28
  29 #include <signal.h>
  30 #include <string.h>
  31 #include <errno.h>
  32 #include <unistd.h>
  33 #include <assert.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <getopt.h>
  37 #include <fcntl.h>
  38
  39 #include <pulse/pulseaudio.h>
  40
  41 #define TIME_EVENT_USEC 50000
  42
  43 #if PA_API_VERSION < 9
  44 #error Invalid PulseAudio API version
  45 #endif
  46
  47 static enum { RECORD, PLAYBACK } mode = PLAYBACK;
  48
  49 static pa_context *context = NULL;
  50 static pa_stream *stream = NULL;
  51 static pa_mainloop_api *mainloop_api = NULL;
  52
  53 static void *buffer = NULL;
  54 static size_t buffer_length = 0, buffer_index = 0;
  55
  56 static pa_io_event* stdio_event = NULL;
  57
  58 static char *stream_name = NULL, *client_name = NULL, *device = NULL;
  59
  60 static int verbose = 0;
  61 static pa_volume_t volume = PA_VOLUME_NORM;
  62
  63 static pa_sample_spec sample_spec = {
  64     .format = PA_SAMPLE_S16LE,
  65     .rate = 44100,
  66     .channels = 2
  67 };
  68
  69 static pa_channel_map channel_map;
  70 static int channel_map_set = 0;
  71
  72 /* A shortcut for terminating the application */
  73 static void quit(int ret) {
  74     assert(mainloop_api);
  75     mainloop_api->quit(mainloop_api, ret);
  76 }
  77
  78 /* Write some data to the stream */
  79 static void do_stream_write(size_t length) {
  80     size_t l;
  81     assert(length);
  82
  83     if (!buffer || !buffer_length)
  84         return;
  85
  86     l = length;
  87     if (l > buffer_length)
  88         l = buffer_length;
  89
  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)));
  92         quit(1);
  93         return;
  94     }
  95
  96     buffer_length -= l;
  97     buffer_index += l;
  98
  99     if (!buffer_length) {
 100         pa_xfree(buffer);
 101         buffer = NULL;
 102         buffer_index = buffer_length = 0;
 103     }
 104 }
 105
 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) {
 108     assert(s && length);
 109
 110     if (stdio_event)
 111         mainloop_api->io_enable(stdio_event, PA_IO_EVENT_INPUT);
 112
 113     if (!buffer)
 114         return;
 115
 116     do_stream_write(length);
 117 }
 118
 119 /* This is called whenever new data may is available */
 120 static void stream_read_callback(pa_stream *s, size_t length, void *userdata) {
 121     const void *data;
 122     assert(s && length);
 123
 124     if (stdio_event)
 125         mainloop_api->io_enable(stdio_event, PA_IO_EVENT_OUTPUT);
 126
 127     if (pa_stream_peek(s, &data, &length) < 0) {
 128         fprintf(stderr, "pa_stream_peek() failed: %s\n", pa_strerror(pa_context_errno(context)));
 129         quit(1);
 130         return;
 131     }
 132
 133     assert(data && length);
 134
 135     if (buffer) {
 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)));
 139             quit(1);
 140         }
 141         return;
 142     }
 143
 144     buffer = pa_xmalloc(buffer_length = length);
 145     memcpy(buffer, data, length);
 146     buffer_index = 0;
 147     pa_stream_drop(s);
 148 }
 149
 150 /* This routine is called whenever the stream state changes */
 151 static void stream_state_callback(pa_stream *s, void *userdata) {
 152     assert(s);
 153
 154     switch (pa_stream_get_state(s)) {
 155         case PA_STREAM_CREATING:
 156         case PA_STREAM_TERMINATED:
 157             break;
 158
 159         case PA_STREAM_READY:
 160             if (verbose) {
 161                 const pa_buffer_attr *a;
 162
 163                 fprintf(stderr, "Stream successfully created.\n");
 164
 165                 if (!(a = pa_stream_get_buffer_attr(s)))
 166                     fprintf(stderr, "pa_stream_get_buffer_attr() failed: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
 167                 else {
 168
 169                     if (mode == PLAYBACK)
 170                         fprintf(stderr, "Buffer metrics: maxlength=%u, tlength=%u, prebuf=%u, minreq=%u\n", a->maxlength, a->tlength, a->prebuf, a->minreq);
 171                     else {
 172                         assert(mode == RECORD);
 173                         fprintf(stderr, "Buffer metrics: maxlength=%u, fragsize=%u\n", a->maxlength, a->fragsize);
 174                     }
 175
 176                 }
 177
 178             }
 179
 180             break;
 181
 182         case PA_STREAM_FAILED:
 183         default:
 184             fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
 185             quit(1);
 186     }
 187 }
 188
 189 /* This is called whenever the context status changes */
 190 static void context_state_callback(pa_context *c, void *userdata) {
 191     assert(c);
 192
 193     switch (pa_context_get_state(c)) {
 194         case PA_CONTEXT_CONNECTING:
 195         case PA_CONTEXT_AUTHORIZING:
 196         case PA_CONTEXT_SETTING_NAME:
 197             break;
 198
 199         case PA_CONTEXT_READY: {
 200             int r;
 201
 202             assert(c && !stream);
 203
 204             if (verbose)
 205                 fprintf(stderr, "Connection established.\n");
 206
 207             if (!(stream = pa_stream_new(c, stream_name, &sample_spec, channel_map_set ? &channel_map : NULL))) {
 208                 fprintf(stderr, "pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(c)));
 209                 goto fail;
 210             }
 211
 212             pa_stream_set_state_callback(stream, stream_state_callback, NULL);
 213             pa_stream_set_write_callback(stream, stream_write_callback, NULL);
 214             pa_stream_set_read_callback(stream, stream_read_callback, NULL);
 215
 216             if (mode == PLAYBACK) {
 217                 pa_cvolume cv;
 218                 if ((r = pa_stream_connect_playback(stream, device, NULL, 0, pa_cvolume_set(&cv, sample_spec.channels, volume), NULL)) < 0) {
 219                     fprintf(stderr, "pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(c)));
 220                     goto fail;
 221                 }
 222
 223             } else {
 224                 if ((r = pa_stream_connect_record(stream, device, NULL, 0)) < 0) {
 225                     fprintf(stderr, "pa_stream_connect_record() failed: %s\n", pa_strerror(pa_context_errno(c)));
 226                     goto fail;
 227                 }
 228             }
 229
 230             break;
 231         }
 232
 233         case PA_CONTEXT_TERMINATED:
 234             quit(0);
 235             break;
 236
 237         case PA_CONTEXT_FAILED:
 238         default:
 239             fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
 240             goto fail;
 241     }
 242
 243     return;
 244
 245 fail:
 246     quit(1);
 247
 248 }
 249
 250 /* Connection draining complete */
 251 static void context_drain_complete(pa_context*c, void *userdata) {
 252     pa_context_disconnect(c);
 253 }
 254
 255 /* Stream draining complete */
 256 static void stream_drain_complete(pa_stream*s, int success, void *userdata) {
 257     pa_operation *o;
 258
 259     if (!success) {
 260         fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
 261         quit(1);
 262     }
 263
 264     if (verbose)
 265         fprintf(stderr, "Playback stream drained.\n");
 266
 267     pa_stream_disconnect(stream);
 268     pa_stream_unref(stream);
 269     stream = NULL;
 270
 271     if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
 272         pa_context_disconnect(context);
 273     else {
 274         if (verbose)
 275             fprintf(stderr, "Draining connection to server.\n");
 276     }
 277 }
 278
 279 /* New data on STDIN **/
 280 static void stdin_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
 281     size_t l, w = 0;
 282     ssize_t r;
 283     assert(a == mainloop_api && e && stdio_event == e);
 284
 285     if (buffer) {
 286         mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
 287         return;
 288     }
 289
 290     if (!stream || pa_stream_get_state(stream) != PA_STREAM_READY || !(l = w = pa_stream_writable_size(stream)))
 291         l = 4096;
 292
 293     buffer = pa_xmalloc(l);
 294
 295     if ((r = read(fd, buffer, l)) <= 0) {
 296         if (r == 0) {
 297             if (verbose)
 298                 fprintf(stderr, "Got EOF.\n");
 299
 300             if (stream) {
 301                 pa_operation *o;
 302
 303                 if (!(o = pa_stream_drain(stream, stream_drain_complete, NULL))) {
 304                     fprintf(stderr, "pa_stream_drain(): %s\n", pa_strerror(pa_context_errno(context)));
 305                     quit(1);
 306                     return;
 307                 }
 308
 309                 pa_operation_unref(o);
 310             } else
 311                 quit(0);
 312
 313         } else {
 314             fprintf(stderr, "read() failed: %s\n", strerror(errno));
 315             quit(1);
 316         }
 317
 318         mainloop_api->io_free(stdio_event);
 319         stdio_event = NULL;
 320         return;
 321     }
 322
 323     buffer_length = r;
 324     buffer_index = 0;
 325
 326     if (w)
 327         do_stream_write(w);
 328 }
 329
 330 /* Some data may be written to STDOUT */
 331 static void stdout_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
 332     ssize_t r;
 333     assert(a == mainloop_api && e && stdio_event == e);
 334
 335     if (!buffer) {
 336         mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
 337         return;
 338     }
 339
 340     assert(buffer_length);
 341
 342     if ((r = write(fd, (uint8_t*) buffer+buffer_index, buffer_length)) <= 0) {
 343         fprintf(stderr, "write() failed: %s\n", strerror(errno));
 344         quit(1);
 345
 346         mainloop_api->io_free(stdio_event);
 347         stdio_event = NULL;
 348         return;
 349     }
 350
 351     buffer_length -= r;
 352     buffer_index += r;
 353
 354     if (!buffer_length) {
 355         pa_xfree(buffer);
 356         buffer = NULL;
 357         buffer_length = buffer_index = 0;
 358     }
 359 }
 360
 361 /* UNIX signal to quit recieved */
 362 static void exit_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
 363     if (verbose)
 364         fprintf(stderr, "Got signal, exiting.\n");
 365     quit(0);
 366 }
 367
 368 /* Show the current latency */
 369 static void stream_update_timing_callback(pa_stream *s, int success, void *userdata) {
 370     pa_usec_t latency, usec;
 371     int negative = 0;
 372
 373     assert(s);
 374
 375     if (!success ||
 376         pa_stream_get_time(s, &usec) < 0 ||
 377         pa_stream_get_latency(s, &latency, &negative) < 0) {
 378         fprintf(stderr, "Failed to get latency: %s\n", pa_strerror(pa_context_errno(context)));
 379         quit(1);
 380         return;
 381     }
 382
 383     fprintf(stderr, "Time: %0.3f sec; Latency: %0.0f usec.  \r",
 384             (float) usec / 1000000,
 385             (float) latency * (negative?-1:1));
 386 }
 387
 388 /* Someone requested that the latency is shown */
 389 static void sigusr1_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
 390
 391     if (!stream)
 392         return;
 393
 394     pa_operation_unref(pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL));
 395 }
 396
 397 static void time_event_callback(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
 398     struct timeval next;
 399
 400     if (stream && pa_stream_get_state(stream) == PA_STREAM_READY) {
 401         pa_operation *o;
 402         if (!(o = pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL)))
 403             fprintf(stderr, "pa_stream_update_timing_info() failed: %s\n", pa_strerror(pa_context_errno(context)));
 404         else
 405             pa_operation_unref(o);
 406     }
 407
 408     pa_gettimeofday(&next);
 409     pa_timeval_add(&next, TIME_EVENT_USEC);
 410
 411     m->time_restart(e, &next);
 412 }
 413
 414 static void help(const char *argv0) {
 415
 416     printf("%s [options]\n\n"
 417            "  -h, --help                            Show this help\n"
 418            "      --version                         Show version\n\n"
 419            "  -r, --record                          Create a connection for recording\n"
 420            "  -p, --playback                        Create a connection for playback\n\n"
 421            "  -v, --verbose                         Enable verbose operations\n\n"
 422            "  -s, --server=SERVER                   The name of the server to connect to\n"
 423            "  -d, --device=DEVICE                   The name of the sink/source to connect to\n"
 424            "  -n, --client-name=NAME                How to call this client on the server\n"
 425            "      --stream-name=NAME                How to call this stream on the server\n"
 426            "      --volume=VOLUME                   Specify the initial (linear) volume in range 0...65536\n"
 427            "      --rate=SAMPLERATE                 The sample rate in Hz (defaults to 44100)\n"
 428            "      --format=SAMPLEFORMAT             The sample type, one of s16le, s16be, u8, float32le,\n"
 429            "                                        float32be, ulaw, alaw (defaults to s16ne)\n"
 430            "      --channels=CHANNELS               The number of channels, 1 for mono, 2 for stereo\n"
 431            "                                        (defaults to 2)\n"
 432            "      --channel-map=CHANNELMAP          Channel map to use instead of the default\n",
 433            argv0);
 434 }
 435
 436 enum {
 437     ARG_VERSION = 256,
 438     ARG_STREAM_NAME,
 439     ARG_VOLUME,
 440     ARG_SAMPLERATE,
 441     ARG_SAMPLEFORMAT,
 442     ARG_CHANNELS,
 443     ARG_CHANNELMAP,
 444 };
 445
 446 int main(int argc, char *argv[]) {
 447     pa_mainloop* m = NULL;
 448     int ret = 1, r, c;
 449     char *bn, *server = NULL;
 450     pa_time_event *time_event = NULL;
 451
 452     static const struct option long_options[] = {
 453         {"record",      0, NULL, 'r'},
 454         {"playback",    0, NULL, 'p'},
 455         {"device",      1, NULL, 'd'},
 456         {"server",      1, NULL, 's'},
 457         {"client-name", 1, NULL, 'n'},
 458         {"stream-name", 1, NULL, ARG_STREAM_NAME},
 459         {"version",     0, NULL, ARG_VERSION},
 460         {"help",        0, NULL, 'h'},
 461         {"verbose",     0, NULL, 'v'},
 462         {"volume",      1, NULL, ARG_VOLUME},
 463         {"rate",        1, NULL, ARG_SAMPLERATE},
 464         {"format",      1, NULL, ARG_SAMPLEFORMAT},
 465         {"channels",    1, NULL, ARG_CHANNELS},
 466         {"channel-map", 1, NULL, ARG_CHANNELMAP},
 467         {NULL,          0, NULL, 0}
 468     };
 469
 470     if (!(bn = strrchr(argv[0], '/')))
 471         bn = argv[0];
 472     else
 473         bn++;
 474
 475     if (strstr(bn, "rec") || strstr(bn, "mon"))
 476         mode = RECORD;
 477     else if (strstr(bn, "cat") || strstr(bn, "play"))
 478         mode = PLAYBACK;
 479
 480     while ((c = getopt_long(argc, argv, "rpd:s:n:hv", long_options, NULL)) != -1) {
 481
 482         switch (c) {
 483             case 'h' :
 484                 help(bn);
 485                 ret = 0;
 486                 goto quit;
 487
 488             case ARG_VERSION:
 489                 printf("pacat "PACKAGE_VERSION"\nCompiled with libpulse %s\nLinked with libpulse %s\n", pa_get_headers_version(), pa_get_library_version());
 490                 ret = 0;
 491                 goto quit;
 492
 493             case 'r':
 494                 mode = RECORD;
 495                 break;
 496
 497             case 'p':
 498                 mode = PLAYBACK;
 499                 break;
 500
 501             case 'd':
 502                 pa_xfree(device);
 503                 device = pa_xstrdup(optarg);
 504                 break;
 505
 506             case 's':
 507                 pa_xfree(server);
 508                 server = pa_xstrdup(optarg);
 509                 break;
 510
 511             case 'n':
 512                 pa_xfree(client_name);
 513                 client_name = pa_xstrdup(optarg);
 514                 break;
 515
 516             case ARG_STREAM_NAME:
 517                 pa_xfree(stream_name);
 518                 stream_name = pa_xstrdup(optarg);
 519                 break;
 520
 521             case 'v':
 522                 verbose = 1;
 523                 break;
 524
 525             case ARG_VOLUME: {
 526                 int v = atoi(optarg);
 527                 volume = v < 0 ? 0 : v;
 528                 break;
 529             }
 530
 531             case ARG_CHANNELS:
 532                 sample_spec.channels = atoi(optarg);
 533                 break;
 534
 535             case ARG_SAMPLEFORMAT:
 536                 sample_spec.format = pa_parse_sample_format(optarg);
 537                 break;
 538
 539             case ARG_SAMPLERATE:
 540                 sample_spec.rate = atoi(optarg);
 541                 break;
 542
 543             case ARG_CHANNELMAP:
 544                 if (!pa_channel_map_parse(&channel_map, optarg)) {
 545                     fprintf(stderr, "Invalid channel map\n");
 546                     goto quit;
 547                 }
 548
 549                 channel_map_set = 1;
 550                 break;
 551
 552             default:
 553                 goto quit;
 554         }
 555     }
 556
 557     if (!pa_sample_spec_valid(&sample_spec)) {
 558         fprintf(stderr, "Invalid sample specification\n");
 559         goto quit;
 560     }
 561
 562     if (channel_map_set && channel_map.channels != sample_spec.channels) {
 563         fprintf(stderr, "Channel map doesn't match sample specification\n");
 564         goto quit;
 565     }
 566
 567     if (verbose) {
 568         char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
 569         pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
 570         fprintf(stderr, "Opening a %s stream with sample specification '%s'.\n", mode == RECORD ? "recording" : "playback", t);
 571     }
 572
 573     if (!(optind >= argc)) {
 574         if (optind+1 == argc) {
 575             int fd;
 576
 577             if ((fd = open(argv[optind], mode == PLAYBACK ? O_RDONLY : O_WRONLY|O_TRUNC|O_CREAT, 0666)) < 0) {
 578                 fprintf(stderr, "open(): %s\n", strerror(errno));
 579                 goto quit;
 580             }
 581
 582             if (dup2(fd, mode == PLAYBACK ? 0 : 1) < 0) {
 583                 fprintf(stderr, "dup2(): %s\n", strerror(errno));
 584                 goto quit;
 585             }
 586
 587             close(fd);
 588
 589             if (!stream_name)
 590                 stream_name = pa_xstrdup(argv[optind]);
 591
 592         } else {
 593             fprintf(stderr, "Too many arguments.\n");
 594             goto quit;
 595         }
 596     }
 597
 598     if (!client_name)
 599         client_name = pa_xstrdup(bn);
 600
 601     if (!stream_name)
 602         stream_name = pa_xstrdup(client_name);
 603
 604     /* Set up a new main loop */
 605     if (!(m = pa_mainloop_new())) {
 606         fprintf(stderr, "pa_mainloop_new() failed.\n");
 607         goto quit;
 608     }
 609
 610     mainloop_api = pa_mainloop_get_api(m);
 611
 612     r = pa_signal_init(mainloop_api);
 613     assert(r == 0);
 614     pa_signal_new(SIGINT, exit_signal_callback, NULL);
 615     pa_signal_new(SIGTERM, exit_signal_callback, NULL);
 616 #ifdef SIGUSR1
 617     pa_signal_new(SIGUSR1, sigusr1_signal_callback, NULL);
 618 #endif
 619 #ifdef SIGPIPE
 620     signal(SIGPIPE, SIG_IGN);
 621 #endif
 622
 623     if (!(stdio_event = mainloop_api->io_new(mainloop_api,
 624                                              mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
 625                                              mode == PLAYBACK ? PA_IO_EVENT_INPUT : PA_IO_EVENT_OUTPUT,
 626                                              mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
 627         fprintf(stderr, "io_new() failed.\n");
 628         goto quit;
 629     }
 630
 631     /* Create a new connection context */
 632     if (!(context = pa_context_new(mainloop_api, client_name))) {
 633         fprintf(stderr, "pa_context_new() failed.\n");
 634         goto quit;
 635     }
 636
 637     pa_context_set_state_callback(context, context_state_callback, NULL);
 638
 639     /* Connect the context */
 640     pa_context_connect(context, server, 0, NULL);
 641
 642     if (verbose) {
 643         struct timeval tv;
 644
 645         pa_gettimeofday(&tv);
 646         pa_timeval_add(&tv, TIME_EVENT_USEC);
 647
 648         if (!(time_event = mainloop_api->time_new(mainloop_api, &tv, time_event_callback, NULL))) {
 649             fprintf(stderr, "time_new() failed.\n");
 650             goto quit;
 651         }
 652     }
 653
 654     /* Run the main loop */
 655     if (pa_mainloop_run(m, &ret) < 0) {
 656         fprintf(stderr, "pa_mainloop_run() failed.\n");
 657         goto quit;
 658     }
 659
 660 quit:
 661     if (stream)
 662         pa_stream_unref(stream);
 663
 664     if (context)
 665         pa_context_unref(context);
 666
 667     if (stdio_event) {
 668         assert(mainloop_api);
 669         mainloop_api->io_free(stdio_event);
 670     }
 671
 672     if (time_event) {
 673         assert(mainloop_api);
 674         mainloop_api->time_free(time_event);
 675     }
 676
 677     if (m) {
 678         pa_signal_done();
 679         pa_mainloop_free(m);
 680     }
 681
 682     pa_xfree(buffer);
 683
 684     pa_xfree(server);
 685     pa_xfree(device);
 686     pa_xfree(client_name);
 687     pa_xfree(stream_name);
 688
 689     return ret;
 690 }