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 #include <polyp/mainloop.h>
  38 #include <polyp/mainloop-signal.h>
  39 #include <polypcore/util.h>
  40
  41 #define TIME_EVENT_USEC 50000
  42
  43 #if PA_API_VERSION != 8
  44 #error Invalid Polypaudio 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 /* 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         free(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 = malloc(buffer_length = length);
 142     assert(buffer);
 143     memcpy(buffer, data, length);
 144     buffer_index = 0;
 145     pa_stream_drop(s);
 146 }
 147
 148 /* This routine is called whenever the stream state changes */
 149 static void stream_state_callback(pa_stream *s, void *userdata) {
 150     assert(s);
 151
 152     switch (pa_stream_get_state(s)) {
 153         case PA_STREAM_CREATING:
 154         case PA_STREAM_TERMINATED:
 155             break;
 156
 157         case PA_STREAM_READY:
 158             if (verbose)
 159                 fprintf(stderr, "Stream successfully created.\n");
 160             break;
 161
 162         case PA_STREAM_FAILED:
 163         default:
 164             fprintf(stderr, "Stream error: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
 165             quit(1);
 166     }
 167 }
 168
 169 /* This is called whenever the context status changes */
 170 static void context_state_callback(pa_context *c, void *userdata) {
 171     assert(c);
 172
 173     switch (pa_context_get_state(c)) {
 174         case PA_CONTEXT_CONNECTING:
 175         case PA_CONTEXT_AUTHORIZING:
 176         case PA_CONTEXT_SETTING_NAME:
 177             break;
 178
 179         case PA_CONTEXT_READY: {
 180             int r;
 181
 182             assert(c && !stream);
 183
 184             if (verbose)
 185                 fprintf(stderr, "Connection established.\n");
 186
 187             if (!(stream = pa_stream_new(c, stream_name, &sample_spec, NULL))) {
 188                 fprintf(stderr, "pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(c)));
 189                 goto fail;
 190             }
 191
 192             pa_stream_set_state_callback(stream, stream_state_callback, NULL);
 193             pa_stream_set_write_callback(stream, stream_write_callback, NULL);
 194             pa_stream_set_read_callback(stream, stream_read_callback, NULL);
 195
 196             if (mode == PLAYBACK) {
 197                 pa_cvolume cv;
 198                 if ((r = pa_stream_connect_playback(stream, device, NULL, 0, pa_cvolume_set(&cv, sample_spec.channels, volume), NULL)) < 0) {
 199                     fprintf(stderr, "pa_stream_connect_playback() failed: %s\n", pa_strerror(pa_context_errno(c)));
 200                     goto fail;
 201                 }
 202
 203             } else {
 204                 if ((r = pa_stream_connect_record(stream, device, NULL, 0)) < 0) {
 205                     fprintf(stderr, "pa_stream_connect_record() failed: %s\n", pa_strerror(pa_context_errno(c)));
 206                     goto fail;
 207                 }
 208             }
 209
 210             break;
 211         }
 212
 213         case PA_CONTEXT_TERMINATED:
 214             quit(0);
 215             break;
 216
 217         case PA_CONTEXT_FAILED:
 218         default:
 219             fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
 220             goto fail;
 221     }
 222
 223     return;
 224
 225 fail:
 226     quit(1);
 227
 228 }
 229
 230 /* Connection draining complete */
 231 static void context_drain_complete(pa_context*c, void *userdata) {
 232     pa_context_disconnect(c);
 233 }
 234
 235 /* Stream draining complete */
 236 static void stream_drain_complete(pa_stream*s, int success, void *userdata) {
 237     pa_operation *o;
 238
 239     if (!success) {
 240         fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
 241         quit(1);
 242     }
 243
 244     if (verbose)
 245         fprintf(stderr, "Playback stream drained.\n");
 246
 247     pa_stream_disconnect(stream);
 248     pa_stream_unref(stream);
 249     stream = NULL;
 250
 251     if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
 252         pa_context_disconnect(context);
 253     else {
 254         if (verbose)
 255             fprintf(stderr, "Draining connection to server.\n");
 256     }
 257 }
 258
 259 /* New data on STDIN **/
 260 static void stdin_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
 261     size_t l, w = 0;
 262     ssize_t r;
 263     assert(a == mainloop_api && e && stdio_event == e);
 264
 265     if (buffer) {
 266         mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
 267         return;
 268     }
 269
 270     if (!stream || pa_stream_get_state(stream) != PA_STREAM_READY || !(l = w = pa_stream_writable_size(stream)))
 271         l = 4096;
 272
 273     buffer = malloc(l);
 274     assert(buffer);
 275     if ((r = read(fd, buffer, l)) <= 0) {
 276         if (r == 0) {
 277             pa_operation *o;
 278
 279             if (verbose)
 280                 fprintf(stderr, "Got EOF.\n");
 281
 282             if (!(o = pa_stream_drain(stream, stream_drain_complete, NULL))) {
 283                 fprintf(stderr, "pa_stream_drain(): %s\n", pa_strerror(pa_context_errno(context)));
 284                 quit(1);
 285                 return;
 286             }
 287
 288             pa_operation_unref(o);
 289         } else {
 290             fprintf(stderr, "read() failed: %s\n", strerror(errno));
 291             quit(1);
 292         }
 293
 294         mainloop_api->io_free(stdio_event);
 295         stdio_event = NULL;
 296         return;
 297     }
 298
 299     buffer_length = r;
 300     buffer_index = 0;
 301
 302     if (w)
 303         do_stream_write(w);
 304 }
 305
 306 /* Some data may be written to STDOUT */
 307 static void stdout_callback(pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata) {
 308     ssize_t r;
 309     assert(a == mainloop_api && e && stdio_event == e);
 310
 311     if (!buffer) {
 312         mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
 313         return;
 314     }
 315
 316     assert(buffer_length);
 317
 318     if ((r = write(fd, (uint8_t*) buffer+buffer_index, buffer_length)) <= 0) {
 319         fprintf(stderr, "write() failed: %s\n", strerror(errno));
 320         quit(1);
 321
 322         mainloop_api->io_free(stdio_event);
 323         stdio_event = NULL;
 324         return;
 325     }
 326
 327     buffer_length -= r;
 328     buffer_index += r;
 329
 330     if (!buffer_length) {
 331         free(buffer);
 332         buffer = NULL;
 333         buffer_length = buffer_index = 0;
 334     }
 335 }
 336
 337 /* UNIX signal to quit recieved */
 338 static void exit_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
 339     if (verbose)
 340         fprintf(stderr, "Got signal, exiting.\n");
 341     quit(0);
 342
 343 }
 344
 345 /* Show the current latency */
 346 static void stream_update_timing_callback(pa_stream *s, int success, void *userdata) {
 347     pa_usec_t latency, usec;
 348     int negative = 0;
 349
 350     assert(s);
 351
 352     if (!success ||
 353         pa_stream_get_time(s, &usec) < 0 ||
 354         pa_stream_get_latency(s, &latency, &negative) < 0) {
 355         fprintf(stderr, "Failed to get latency: %s\n", pa_strerror(pa_context_errno(context)));
 356         quit(1);
 357         return;
 358     }
 359
 360     fprintf(stderr, "Time: %0.3f sec; Latency: %0.0f usec.  \r",
 361             (float) usec / 1000000,
 362             (float) latency * (negative?-1:1));
 363 }
 364
 365 /* Someone requested that the latency is shown */
 366 static void sigusr1_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
 367
 368     if (!stream)
 369         return;
 370
 371     pa_operation_unref(pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL));
 372 }
 373
 374 static void time_event_callback(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
 375     struct timeval next;
 376
 377     if (!stream)
 378         return;
 379
 380     pa_operation_unref(pa_stream_update_timing_info(stream, stream_update_timing_callback, NULL));
 381
 382     pa_gettimeofday(&next);
 383     pa_timeval_add(&next, TIME_EVENT_USEC);
 384
 385     m->time_restart(e, &next);
 386 }
 387
 388 static void help(const char *argv0) {
 389
 390     printf("%s [options]\n\n"
 391            "  -h, --help                            Show this help\n"
 392            "      --version                         Show version\n\n"
 393            "  -r, --record                          Create a connection for recording\n"
 394            "  -p, --playback                        Create a connection for playback\n\n"
 395            "  -v, --verbose                         Enable verbose operations\n\n"
 396            "  -s, --server=SERVER                   The name of the server to connect to\n"
 397            "  -d, --device=DEVICE                   The name of the sink/source to connect to\n"
 398            "  -n, --client-name=NAME                How to call this client on the server\n"
 399            "      --stream-name=NAME                How to call this stream on the server\n"
 400            "      --volume=VOLUME                   Specify the initial (linear) volume in range 0...256\n"
 401            "      --rate=SAMPLERATE                 The sample rate in Hz (defaults to 44100)\n"
 402            "      --format=SAMPLEFORMAT             The sample type, one of s16le, s16be, u8, float32le,\n"
 403            "                                        float32be, ulaw, alaw (defaults to s16ne)\n"
 404            "      --channels=CHANNELS               The number of channels, 1 for mono, 2 for stereo\n"
 405            "                                        (defaults to 2)\n",
 406            argv0);
 407 }
 408
 409 enum {
 410     ARG_VERSION = 256,
 411     ARG_STREAM_NAME,
 412     ARG_VOLUME,
 413     ARG_SAMPLERATE,
 414     ARG_SAMPLEFORMAT,
 415     ARG_CHANNELS
 416 };
 417
 418 int main(int argc, char *argv[]) {
 419     pa_mainloop* m = NULL;
 420     int ret = 1, r, c;
 421     char *bn, *server = NULL;
 422     pa_time_event *time_event = NULL;
 423
 424     static const struct option long_options[] = {
 425         {"record",      0, NULL, 'r'},
 426         {"playback",    0, NULL, 'p'},
 427         {"device",      1, NULL, 'd'},
 428         {"server",      1, NULL, 's'},
 429         {"client-name", 1, NULL, 'n'},
 430         {"stream-name", 1, NULL, ARG_STREAM_NAME},
 431         {"version",     0, NULL, ARG_VERSION},
 432         {"help",        0, NULL, 'h'},
 433         {"verbose",     0, NULL, 'v'},
 434         {"volume",      1, NULL, ARG_VOLUME},
 435         {"rate",        1, NULL, ARG_SAMPLERATE},
 436         {"format",      1, NULL, ARG_SAMPLEFORMAT},
 437         {"channels",    1, NULL, ARG_CHANNELS},
 438         {NULL,          0, NULL, 0}
 439     };
 440
 441     if (!(bn = strrchr(argv[0], '/')))
 442         bn = argv[0];
 443     else
 444         bn++;
 445
 446     if (strstr(bn, "rec") || strstr(bn, "mon"))
 447         mode = RECORD;
 448     else if (strstr(bn, "cat") || strstr(bn, "play"))
 449         mode = PLAYBACK;
 450
 451     while ((c = getopt_long(argc, argv, "rpd:s:n:hv", long_options, NULL)) != -1) {
 452
 453         switch (c) {
 454             case 'h' :
 455                 help(bn);
 456                 ret = 0;
 457                 goto quit;
 458
 459             case ARG_VERSION:
 460                 printf("pacat "PACKAGE_VERSION"\nCompiled with libpolyp %s\nLinked with libpolyp %s\n", pa_get_headers_version(), pa_get_library_version());
 461                 ret = 0;
 462                 goto quit;
 463
 464             case 'r':
 465                 mode = RECORD;
 466                 break;
 467
 468             case 'p':
 469                 mode = PLAYBACK;
 470                 break;
 471
 472             case 'd':
 473                 free(device);
 474                 device = strdup(optarg);
 475                 break;
 476
 477             case 's':
 478                 free(server);
 479                 server = strdup(optarg);
 480                 break;
 481
 482             case 'n':
 483                 free(client_name);
 484                 client_name = strdup(optarg);
 485                 break;
 486
 487             case ARG_STREAM_NAME:
 488                 free(stream_name);
 489                 stream_name = strdup(optarg);
 490                 break;
 491
 492             case 'v':
 493                 verbose = 1;
 494                 break;
 495
 496             case ARG_VOLUME: {
 497                 int v = atoi(optarg);
 498                 volume = v < 0 ? 0 : v;
 499                 break;
 500             }
 501
 502             case ARG_CHANNELS:
 503                 sample_spec.channels = atoi(optarg);
 504                 break;
 505
 506             case ARG_SAMPLEFORMAT:
 507                 sample_spec.format = pa_parse_sample_format(optarg);
 508                 break;
 509
 510             case ARG_SAMPLERATE:
 511                 sample_spec.rate = atoi(optarg);
 512                 break;
 513
 514             default:
 515                 goto quit;
 516         }
 517     }
 518
 519     if (!client_name)
 520         client_name = strdup(bn);
 521
 522     if (!stream_name)
 523         stream_name = strdup(client_name);
 524
 525     if (!pa_sample_spec_valid(&sample_spec)) {
 526         fprintf(stderr, "Invalid sample specification\n");
 527         goto quit;
 528     }
 529
 530     if (verbose) {
 531         char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
 532         pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
 533         fprintf(stderr, "Opening a %s stream with sample specification '%s'.\n", mode == RECORD ? "recording" : "playback", t);
 534     }
 535
 536     if (!(optind >= argc)) {
 537         if (optind+1 == argc) {
 538             int fd;
 539
 540             if ((fd = open(argv[optind], mode == PLAYBACK ? O_RDONLY : O_WRONLY|O_TRUNC|O_CREAT)) < 0) {
 541                 fprintf(stderr, "open(): %s\n", strerror(errno));
 542                 goto quit;
 543             }
 544
 545             if (dup2(fd, mode == PLAYBACK ? 0 : 1) < 0) {
 546                 fprintf(stderr, "dup2(): %s\n", strerror(errno));
 547                 goto quit;
 548             }
 549
 550             close(fd);
 551         } else {
 552             fprintf(stderr, "Too many arguments.\n");
 553             goto quit;
 554         }
 555     }
 556
 557     /* Set up a new main loop */
 558     if (!(m = pa_mainloop_new())) {
 559         fprintf(stderr, "pa_mainloop_new() failed.\n");
 560         goto quit;
 561     }
 562
 563     mainloop_api = pa_mainloop_get_api(m);
 564
 565     r = pa_signal_init(mainloop_api);
 566     assert(r == 0);
 567     pa_signal_new(SIGINT, exit_signal_callback, NULL);
 568     pa_signal_new(SIGTERM, exit_signal_callback, NULL);
 569 #ifdef SIGUSR1
 570     pa_signal_new(SIGUSR1, sigusr1_signal_callback, NULL);
 571 #endif
 572 #ifdef SIGPIPE
 573     signal(SIGPIPE, SIG_IGN);
 574 #endif
 575
 576     if (!(stdio_event = mainloop_api->io_new(mainloop_api,
 577                                              mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
 578                                              mode == PLAYBACK ? PA_IO_EVENT_INPUT : PA_IO_EVENT_OUTPUT,
 579                                              mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
 580         fprintf(stderr, "io_new() failed.\n");
 581         goto quit;
 582     }
 583
 584     /* Create a new connection context */
 585     if (!(context = pa_context_new(mainloop_api, client_name))) {
 586         fprintf(stderr, "pa_context_new() failed.\n");
 587         goto quit;
 588     }
 589
 590     pa_context_set_state_callback(context, context_state_callback, NULL);
 591
 592     /* Connect the context */
 593     pa_context_connect(context, server, 0, NULL);
 594
 595     if (verbose) {
 596         struct timeval tv;
 597
 598         pa_gettimeofday(&tv);
 599         pa_timeval_add(&tv, TIME_EVENT_USEC);
 600
 601         if (!(time_event = mainloop_api->time_new(mainloop_api, &tv, time_event_callback, NULL))) {
 602             fprintf(stderr, "time_new() failed.\n");
 603             goto quit;
 604         }
 605     }
 606
 607     /* Run the main loop */
 608     if (pa_mainloop_run(m, &ret) < 0) {
 609         fprintf(stderr, "pa_mainloop_run() failed.\n");
 610         goto quit;
 611     }
 612
 613 quit:
 614     if (stream)
 615         pa_stream_unref(stream);
 616
 617     if (context)
 618         pa_context_unref(context);
 619
 620     if (stdio_event) {
 621         assert(mainloop_api);
 622         mainloop_api->io_free(stdio_event);
 623     }
 624
 625     if (time_event) {
 626         assert(mainloop_api);
 627         mainloop_api->time_free(time_event);
 628     }
 629
 630     if (m) {
 631         pa_signal_done();
 632         pa_mainloop_free(m);
 633     }
 634
 635     free(buffer);
 636
 637     free(server);
 638     free(device);
 639     free(client_name);
 640     free(stream_name);
 641
 642     return ret;
 643 }