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