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

   1 /* $Id$ */
   2
   3 /***
   4   This file is part of polypaudio.
   5
   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.
  10
  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.
  15
  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
  19   USA.
  20 ***/
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <signal.h>
  27 #include <string.h>
  28 #include <errno.h>
  29 #include <unistd.h>
  30 #include <assert.h>
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33 #include <getopt.h>
  34 #include <fcntl.h>
  35
  36 #include <polyp/polypaudio.h>
  37
  38 #define TIME_EVENT_USEC 50000
  39
  40 #if PA_API_VERSION != 9
  41 #error Invalid Polypaudio API version
  42 #endif
  43
  44 static enum { RECORD, PLAYBACK } mode = PLAYBACK;
  45
  46 static pa_context *context = NULL;
  47 static pa_stream *stream = NULL;
  48 static pa_mainloop_api *mainloop_api = NULL;
  49
  50 static void *buffer = NULL;
  51 static size_t buffer_length = 0, buffer_index = 0;
  52
  53 static pa_io_event* stdio_event = NULL;
  54
  55 static char *stream_name = NULL, *client_name = NULL, *device = NULL;
  56
  57 static int verbose = 0;
  58 static pa_volume_t volume = PA_VOLUME_NORM;
  59
  60 static pa_sample_spec sample_spec = {
  61     .format = PA_SAMPLE_S16LE,
  62     .rate = 44100,
  63     .channels = 2
  64 };
  65
  66 static pa_channel_map channel_map;
  67 static int channel_map_set = 0;
  68
  69 /* A shortcut for terminating the application */
  70 static void quit(int ret) {
  71     assert(mainloop_api);
  72     mainloop_api->quit(mainloop_api, ret);
  73 }
  74
  75 /* Write some data to the stream */
  76 static void do_stream_write(size_t length) {
  77     size_t l;
  78     assert(length);
  79
  80     if (!buffer || !buffer_length)
  81         return;
  82
  83     l = length;
  84     if (l > buffer_length)
  85         l = buffer_length;
  86
  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)));
  89         quit(1);
  90         return;
  91     }
  92
  93     buffer_length -= l;
  94     buffer_index += l;
  95
  96     if (!buffer_length) {
  97         pa_xfree(buffer);
  98         buffer = NULL;
  99         buffer_index = buffer_length = 0;
 100     }
 101 }
 102
 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) {
 105     assert(s && length);
 106
 107     if (stdio_event)
 108         mainloop_api->io_enable(stdio_event, PA_IO_EVENT_INPUT);
 109
 110     if (!buffer)
 111         return;
 112
 113     do_stream_write(length);
 114 }
 115
 116 /* This is called whenever new data may is available */
 117 static void stream_read_callback(pa_stream *s, size_t length, void *userdata) {
 118     const void *data;
 119     assert(s && length);
 120
 121     if (stdio_event)
 122         mainloop_api->io_enable(stdio_event, PA_IO_EVENT_OUTPUT);
 123
 124     if (pa_stream_peek(s, &data, &length) < 0) {
 125         fprintf(stderr, "pa_stream_peek() failed: %s\n", pa_strerror(pa_context_errno(context)));
 126         quit(1);
 127         return;
 128     }
 129
 130     assert(data && length);
 131
 132     if (buffer) {
 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)));
 136             quit(1);
 137         }
 138         return;
 139     }
 140
 141     buffer = pa_xmalloc(buffer_length = length);
 142     memcpy(buffer, data, length);
 143     buffer_index = 0;
 144     pa_stream_drop(s);
 145 }
 146
 147 /* This routine is called whenever the stream state changes */
 148 static void stream_state_callback(pa_stream *s, void *userdata) {
 149     assert(s);
 150
 151     switch (pa_stream_get_state(s)) {
 152         case PA_STREAM_CREATING:
 153         case PA_STREAM_TERMINATED:
 154             break;
 155
 156         case PA_STREAM_READY:
 157             if (verbose)
 158                 fprintf(stderr, "Stream successfully created.\n");
 159             break;
 160
 161         case PA_STREAM_FAILED:
 162         default:
 163             fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
 164             quit(1);
 165     }
 166 }
 167
 168 /* This is called whenever the context status changes */
 169 static void context_state_callback(pa_context *c, void *userdata) {
 170     assert(c);
 171
 172     switch (pa_context_get_state(c)) {
 173         case PA_CONTEXT_CONNECTING:
 174         case PA_CONTEXT_AUTHORIZING:
 175         case PA_CONTEXT_SETTING_NAME:
 176             break;
 177
 178         case PA_CONTEXT_READY: {
 179             int r;
 180
 181             assert(c && !stream);
 182
 183             if (verbose)
 184                 fprintf(stderr, "Connection established.\n");
 185
 186             if (!(stream = pa_stream_new(c, stream_name, &sample_spec, channel_map_set ? &channel_map : NULL))) {
 187                 fprintf(stderr, "pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(c)));
 188                 goto fail;
 189             }
 190
 191             pa_stream_set_state_callback(stream, stream_state_callback, NULL);
 192             pa_stream_set_write_callback(stream, stream_write_callback, NULL);
 193             pa_stream_set_read_callback(stream, stream_read_callback, NULL);
 194
 195             if (mode == PLAYBACK) {
 196                 pa_cvolume cv;
 197                 if ((r = pa_stream_connect_playback(stream, device, NULL, 0, pa_cvolume_set(&cv, sample_spec.channels, volume), NULL)) < 0) {
 198                     fprintf(stderr, "pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(c)));
 199                     goto fail;
 200                 }
 201
 202             } else {
 203                 if ((r = pa_stream_connect_record(stream, device, NULL, 0)) < 0) {
 204                     fprintf(stderr, "pa_stream_connect_record() failed: %s\n", pa_strerror(pa_context_errno(c)));
 205                     goto fail;
 206                 }
 207             }
 208
 209             break;
 210         }
 211
 212         case PA_CONTEXT_TERMINATED:
 213             quit(0);
 214             break;
 215
 216         case PA_CONTEXT_FAILED:
 217         default:
 218             fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
 219             goto fail;
 220     }
 221
 222     return;
 223
 224 fail:
 225     quit(1);
 226
 227 }
 228
 229 /* Connection draining complete */
 230 static void context_drain_complete(pa_context*c, void *userdata) {
 231     pa_context_disconnect(c);
 232 }
 233
 234 /* Stream draining complete */
 235 static void stream_drain_complete(pa_stream*s, int success, void *userdata) {
 236     pa_operation *o;
 237
 238     if (!success) {
 239         fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
 240         quit(1);
 241     }
 242
 243     if (verbose)
 244         fprintf(stderr, "Playback stream drained.\n");
 245
 246     pa_stream_disconnect(stream);
 247     pa_stream_unref(stream);
 248     stream = NULL;
 249
 250     if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
 251         pa_context_disconnect(context);
 252     else {
 253         if (verbose)
 254             fprintf(stderr, "Draining connection to server.\n");
 255     }
 256 }
 257
 258 /* New data on STDIN **/
 259 static void stdin_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
 260     size_t l, w = 0;
 261     ssize_t r;
 262     assert(a == mainloop_api && e && stdio_event == e);
 263
 264     if (buffer) {
 265         mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
 266         return;
 267     }
 268
 269     if (!stream || pa_stream_get_state(stream) != PA_STREAM_READY || !(l = w = pa_stream_writable_size(stream)))
 270         l = 4096;
 271
 272     buffer = pa_xmalloc(l);
 273
 274     if ((r = read(fd, buffer, l)) <= 0) {
 275         if (r == 0) {
 276             pa_operation *o;
 277
 278             if (verbose)
 279                 fprintf(stderr, "Got EOF.\n");
 280
 281             if (!(o = pa_stream_drain(stream, stream_drain_complete, NULL))) {
 282                 fprintf(stderr, "pa_stream_drain(): %s\n", pa_strerror(pa_context_errno(context)));
 283                 quit(1);
 284                 return;
 285             }
 286
 287             pa_operation_unref(o);
 288         } else {
 289             fprintf(stderr, "read() failed: %s\n", strerror(errno));
 290             quit(1);
 291         }
 292
 293         mainloop_api->io_free(stdio_event);
 294         stdio_event = NULL;
 295         return;
 296     }
 297
 298     buffer_length = r;
 299     buffer_index = 0;
 300
 301     if (w)
 302         do_stream_write(w);
 303 }
 304
 305 /* Some data may be written to STDOUT */
 306 static void stdout_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
 307     ssize_t r;
 308     assert(a == mainloop_api && e && stdio_event == e);
 309
 310     if (!buffer) {
 311         mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
 312         return;
 313     }
 314
 315     assert(buffer_length);
 316
 317     if ((r = write(fd, (uint8_t*) buffer+buffer_index, buffer_length)) <= 0) {
 318         fprintf(stderr, "write() failed: %s\n", strerror(errno));
 319         quit(1);
 320
 321         mainloop_api->io_free(stdio_event);
 322         stdio_event = NULL;
 323         return;
 324     }
 325
 326     buffer_length -= r;
 327     buffer_index += r;
 328
 329     if (!buffer_length) {
 330         pa_xfree(buffer);
 331         buffer = NULL;
 332         buffer_length = buffer_index = 0;
 333     }
 334 }
 335
 336 /* UNIX signal to quit recieved */
 337 static void exit_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
 338     if (verbose)
 339         fprintf(stderr, "Got signal, exiting.\n");
 340     quit(0);
 341 }
 342
 343 /* Show the current latency */
 344 static void stream_update_timing_callback(pa_stream *s, int success, void *userdata) {
 345     pa_usec_t latency, usec;
 346     int negative = 0;
 347
 348     assert(s);
 349
 350     if (!success ||
 351         pa_stream_get_time(s, &usec) < 0 ||
 352         pa_stream_get_latency(s, &latency, &negative) < 0) {
 353         fprintf(stderr, "Failed to get latency: %s\n", pa_strerror(pa_context_errno(context)));
 354         quit(1);
 355         return;
 356     }
 357
 358     fprintf(stderr, "Time: %0.3f sec; Latency: %0.0f usec.  \r",
 359             (float) usec / 1000000,
 360             (float) latency * (negative?-1:1));
 361 }
 362
 363 /* Someone requested that the latency is shown */
 364 static void sigusr1_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
 365
 366     if (!stream)
 367         return;
 368
 369     pa_operation_unref(pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL));
 370 }
 371
 372 static void time_event_callback(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
 373     struct timeval next;
 374
 375     if (stream && pa_stream_get_state(stream) == PA_STREAM_READY) {
 376         pa_operation *o;
 377         if (!(o = pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL)))
 378             fprintf(stderr, "pa_stream_update_timing_info() failed: %s\n", pa_strerror(pa_context_errno(context)));
 379         else
 380             pa_operation_unref(o);
 381     }
 382
 383     pa_gettimeofday(&next);
 384     pa_timeval_add(&next, TIME_EVENT_USEC);
 385
 386     m->time_restart(e, &next);
 387 }
 388
 389 static void help(const char *argv0) {
 390
 391     printf("%s [options]\n\n"
 392            "  -h, --help                            Show this help\n"
 393            "      --version                         Show version\n\n"
 394            "  -r, --record                          Create a connection for recording\n"
 395            "  -p, --playback                        Create a connection for playback\n\n"
 396            "  -v, --verbose                         Enable verbose operations\n\n"
 397            "  -s, --server=SERVER                   The name of the server to connect to\n"
 398            "  -d, --device=DEVICE                   The name of the sink/source to connect to\n"
 399            "  -n, --client-name=NAME                How to call this client on the server\n"
 400            "      --stream-name=NAME                How to call this stream on the server\n"
 401            "      --volume=VOLUME                   Specify the initial (linear) volume in range 0...65536\n"
 402            "      --rate=SAMPLERATE                 The sample rate in Hz (defaults to 44100)\n"
 403            "      --format=SAMPLEFORMAT             The sample type, one of s16le, s16be, u8, float32le,\n"
 404            "                                        float32be, ulaw, alaw (defaults to s16ne)\n"
 405            "      --channels=CHANNELS               The number of channels, 1 for mono, 2 for stereo\n"
 406            "                                        (defaults to 2)\n"
 407            "      --channel-map=CHANNELMAP          Channel map to use instead of the default\n",
 408            argv0);
 409 }
 410
 411 enum {
 412     ARG_VERSION = 256,
 413     ARG_STREAM_NAME,
 414     ARG_VOLUME,
 415     ARG_SAMPLERATE,
 416     ARG_SAMPLEFORMAT,
 417     ARG_CHANNELS,
 418     ARG_CHANNELMAP,
 419 };
 420
 421 int main(int argc, char *argv[]) {
 422     pa_mainloop* m = NULL;
 423     int ret = 1, r, c;
 424     char *bn, *server = NULL;
 425     pa_time_event *time_event = NULL;
 426
 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},
 441         {"channel-map", 1, NULL, ARG_CHANNELMAP},
 442         {NULL,          0, NULL, 0}
 443     };
 444
 445     if (!(bn = strrchr(argv[0], '/')))
 446         bn = argv[0];
 447     else
 448         bn++;
 449
 450     if (strstr(bn, "rec") || strstr(bn, "mon"))
 451         mode = RECORD;
 452     else if (strstr(bn, "cat") || strstr(bn, "play"))
 453         mode = PLAYBACK;
 454
 455     while ((c = getopt_long(argc, argv, "rpd:s:n:hv", long_options, NULL)) != -1) {
 456
 457         switch (c) {
 458             case 'h' :
 459                 help(bn);
 460                 ret = 0;
 461                 goto quit;
 462
 463             case ARG_VERSION:
 464                 printf("pacat "PACKAGE_VERSION"\nCompiled with libpolyp %s\nLinked with libpolyp %s\n", pa_get_headers_version(), pa_get_library_version());
 465                 ret = 0;
 466                 goto quit;
 467
 468             case 'r':
 469                 mode = RECORD;
 470                 break;
 471
 472             case 'p':
 473                 mode = PLAYBACK;
 474                 break;
 475
 476             case 'd':
 477                 pa_xfree(device);
 478                 device = pa_xstrdup(optarg);
 479                 break;
 480
 481             case 's':
 482                 pa_xfree(server);
 483                 server = pa_xstrdup(optarg);
 484                 break;
 485
 486             case 'n':
 487                 pa_xfree(client_name);
 488                 client_name = pa_xstrdup(optarg);
 489                 break;
 490
 491             case ARG_STREAM_NAME:
 492                 pa_xfree(stream_name);
 493                 stream_name = pa_xstrdup(optarg);
 494                 break;
 495
 496             case 'v':
 497                 verbose = 1;
 498                 break;
 499
 500             case ARG_VOLUME: {
 501                 int v = atoi(optarg);
 502                 volume = v < 0 ? 0 : v;
 503                 break;
 504             }
 505
 506             case ARG_CHANNELS:
 507                 sample_spec.channels = atoi(optarg);
 508                 break;
 509
 510             case ARG_SAMPLEFORMAT:
 511                 sample_spec.format = pa_parse_sample_format(optarg);
 512                 break;
 513
 514             case ARG_SAMPLERATE:
 515                 sample_spec.rate = atoi(optarg);
 516                 break;
 517
 518             case ARG_CHANNELMAP:
 519                 if (!pa_channel_map_parse(&channel_map, optarg)) {
 520                     fprintf(stderr, "Invalid channel map\n");
 521                     goto quit;
 522                 }
 523
 524                 channel_map_set = 1;
 525                 break;
 526
 527             default:
 528                 goto quit;
 529         }
 530     }
 531
 532     if (!pa_sample_spec_valid(&sample_spec)) {
 533         fprintf(stderr, "Invalid sample specification\n");
 534         goto quit;
 535     }
 536
 537     if (channel_map_set && channel_map.channels != sample_spec.channels) {
 538         fprintf(stderr, "Channel map doesn't match sample specification\n");
 539         goto quit;
 540     }
 541
 542     if (verbose) {
 543         char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
 544         pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
 545         fprintf(stderr, "Opening a %s stream with sample specification '%s'.\n", mode == RECORD ? "recording" : "playback", t);
 546     }
 547
 548     if (!(optind >= argc)) {
 549         if (optind+1 == argc) {
 550             int fd;
 551
 552             if ((fd = open(argv[optind], mode == PLAYBACK ? O_RDONLY : O_WRONLY|O_TRUNC|O_CREAT, 0666)) < 0) {
 553                 fprintf(stderr, "open(): %s\n", strerror(errno));
 554                 goto quit;
 555             }
 556
 557             if (dup2(fd, mode == PLAYBACK ? 0 : 1) < 0) {
 558                 fprintf(stderr, "dup2(): %s\n", strerror(errno));
 559                 goto quit;
 560             }
 561
 562             close(fd);
 563
 564             if (!stream_name)
 565                 stream_name = pa_xstrdup(argv[optind]);
 566
 567         } else {
 568             fprintf(stderr, "Too many arguments.\n");
 569             goto quit;
 570         }
 571     }
 572
 573     if (!client_name)
 574         client_name = pa_xstrdup(bn);
 575
 576     if (!stream_name)
 577         stream_name = pa_xstrdup(client_name);
 578
 579     /* Set up a new main loop */
 580     if (!(m = pa_mainloop_new())) {
 581         fprintf(stderr, "pa_mainloop_new() failed.\n");
 582         goto quit;
 583     }
 584
 585     mainloop_api = pa_mainloop_get_api(m);
 586
 587     r = pa_signal_init(mainloop_api);
 588     assert(r == 0);
 589     pa_signal_new(SIGINT, exit_signal_callback, NULL);
 590     pa_signal_new(SIGTERM, exit_signal_callback, NULL);
 591 #ifdef SIGUSR1
 592     pa_signal_new(SIGUSR1, sigusr1_signal_callback, NULL);
 593 #endif
 594 #ifdef SIGPIPE
 595     signal(SIGPIPE, SIG_IGN);
 596 #endif
 597
 598     if (!(stdio_event = mainloop_api->io_new(mainloop_api,
 599                                              mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
 600                                              mode == PLAYBACK ? PA_IO_EVENT_INPUT : PA_IO_EVENT_OUTPUT,
 601                                              mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
 602         fprintf(stderr, "io_new() failed.\n");
 603         goto quit;
 604     }
 605
 606     /* Create a new connection context */
 607     if (!(context = pa_context_new(mainloop_api, client_name))) {
 608         fprintf(stderr, "pa_context_new() failed.\n");
 609         goto quit;
 610     }
 611
 612     pa_context_set_state_callback(context, context_state_callback, NULL);
 613
 614     /* Connect the context */
 615     pa_context_connect(context, server, 0, NULL);
 616
 617     if (verbose) {
 618         struct timeval tv;
 619
 620         pa_gettimeofday(&tv);
 621         pa_timeval_add(&tv, TIME_EVENT_USEC);
 622
 623         if (!(time_event = mainloop_api->time_new(mainloop_api, &tv, time_event_callback, NULL))) {
 624             fprintf(stderr, "time_new() failed.\n");
 625             goto quit;
 626         }
 627     }
 628
 629     /* Run the main loop */
 630     if (pa_mainloop_run(m, &ret) < 0) {
 631         fprintf(stderr, "pa_mainloop_run() failed.\n");
 632         goto quit;
 633     }
 634
 635 quit:
 636     if (stream)
 637         pa_stream_unref(stream);
 638
 639     if (context)
 640         pa_context_unref(context);
 641
 642     if (stdio_event) {
 643         assert(mainloop_api);
 644         mainloop_api->io_free(stdio_event);
 645     }
 646
 647     if (time_event) {
 648         assert(mainloop_api);
 649         mainloop_api->time_free(time_event);
 650     }
 651
 652     if (m) {
 653         pa_signal_done();
 654         pa_mainloop_free(m);
 655     }
 656
 657     pa_xfree(buffer);
 658
 659     pa_xfree(server);
 660     pa_xfree(device);
 661     pa_xfree(client_name);
 662     pa_xfree(stream_name);
 663
 664     return ret;
 665 }