code.delx.au - pulseaudio/blob - src/utils/paplay.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
  35 #include <sndfile.h>
  36
  37 #include <polyp/polypaudio.h>
  38 #include <polyp/mainloop.h>
  39 #include <polyp/mainloop-signal.h>
  40
  41 #if PA_API_VERSION != 8
  42 #error Invalid Polypaudio API version
  43 #endif
  44
  45 static pa_context *context = NULL;
  46 static pa_stream *stream = NULL;
  47 static pa_mainloop_api *mainloop_api = NULL;
  48
  49 static char *stream_name = NULL, *client_name = NULL, *device = NULL;
  50
  51 static int verbose = 0;
  52 static pa_volume_t volume = PA_VOLUME_NORM;
  53
  54 static SNDFILE* sndfile = NULL;
  55
  56 static pa_sample_spec sample_spec = { 0, 0, 0 };
  57
  58 static sf_count_t (*readf_function)(SNDFILE *_sndfile, void *ptr, sf_count_t frames);
  59
  60 /* A shortcut for terminating the application */
  61 static void quit(int ret) {
  62     assert(mainloop_api);
  63     mainloop_api->quit(mainloop_api, ret);
  64 }
  65
  66 /* Connection draining complete */
  67 static void context_drain_complete(pa_context*c, void *userdata) {
  68     pa_context_disconnect(c);
  69 }
  70
  71 /* Stream draining complete */
  72 static void stream_drain_complete(pa_stream*s, int success, void *userdata) {
  73     pa_operation *o;
  74
  75     if (!success) {
  76         fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
  77         quit(1);
  78     }
  79
  80     if (verbose)
  81         fprintf(stderr, "Playback stream drained.\n");
  82
  83     pa_stream_disconnect(stream);
  84     pa_stream_unref(stream);
  85     stream = NULL;
  86
  87     if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
  88         pa_context_disconnect(context);
  89     else {
  90         pa_operation_unref(o);
  91
  92         if (verbose)
  93             fprintf(stderr, "Draining connection to server.\n");
  94     }
  95 }
  96
  97 /* This is called whenever new data may be written to the stream */
  98 static void stream_write_callback(pa_stream *s, size_t length, void *userdata) {
  99     size_t k;
 100     sf_count_t f, n;
 101     void *data;
 102     assert(s && length);
 103
 104     if (!sndfile)
 105         return;
 106
 107     k = pa_frame_size(&sample_spec);
 108
 109     data = malloc(length);
 110
 111     n = length/k;
 112
 113     f = readf_function(sndfile, data, n);
 114
 115     if (f > 0)
 116         pa_stream_write(s, data, f*k, free, 0, PA_SEEK_RELATIVE);
 117
 118     if (f < n) {
 119         sf_close(sndfile);
 120         sndfile = NULL;
 121         pa_operation_unref(pa_stream_drain(s, stream_drain_complete, NULL));
 122     }
 123 }
 124
 125 /* This routine is called whenever the stream state changes */
 126 static void stream_state_callback(pa_stream *s, void *userdata) {
 127     assert(s);
 128
 129     switch (pa_stream_get_state(s)) {
 130         case PA_STREAM_CREATING:
 131         case PA_STREAM_TERMINATED:
 132             break;
 133
 134         case PA_STREAM_READY:
 135             if (verbose)
 136                 fprintf(stderr, "Stream successfully created\n");
 137             break;
 138
 139         case PA_STREAM_FAILED:
 140         default:
 141             fprintf(stderr, "Stream errror: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
 142             quit(1);
 143     }
 144 }
 145
 146 /* This is called whenever the context status changes */
 147 static void context_state_callback(pa_context *c, void *userdata) {
 148     assert(c);
 149
 150     switch (pa_context_get_state(c)) {
 151         case PA_CONTEXT_CONNECTING:
 152         case PA_CONTEXT_AUTHORIZING:
 153         case PA_CONTEXT_SETTING_NAME:
 154             break;
 155
 156         case PA_CONTEXT_READY: {
 157             pa_cvolume cv;
 158
 159             assert(c && !stream);
 160
 161             if (verbose)
 162                 fprintf(stderr, "Connection established.\n");
 163
 164             stream = pa_stream_new(c, stream_name, &sample_spec, NULL);
 165             assert(stream);
 166
 167             pa_stream_set_state_callback(stream, stream_state_callback, NULL);
 168             pa_stream_set_write_callback(stream, stream_write_callback, NULL);
 169             pa_stream_connect_playback(stream, device, NULL, 0, pa_cvolume_set(&cv, sample_spec.channels, volume), NULL);
 170
 171             break;
 172         }
 173
 174         case PA_CONTEXT_TERMINATED:
 175             quit(0);
 176             break;
 177
 178         case PA_CONTEXT_FAILED:
 179         default:
 180             fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
 181             quit(1);
 182     }
 183 }
 184
 185 /* UNIX signal to quit recieved */
 186 static void exit_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
 187     if (verbose)
 188         fprintf(stderr, "Got SIGINT, exiting.\n");
 189     quit(0);
 190
 191 }
 192
 193 static void help(const char *argv0) {
 194
 195     printf("%s [options] [FILE]\n\n"
 196            "  -h, --help                            Show this help\n"
 197            "      --version                         Show version\n\n"
 198            "  -v, --verbose                         Enable verbose operations\n\n"
 199            "  -s, --server=SERVER                   The name of the server to connect to\n"
 200            "  -d, --device=DEVICE                   The name of the sink/source to connect to\n"
 201            "  -n, --client-name=NAME                How to call this client on the server\n"
 202            "      --stream-name=NAME                How to call this stream on the server\n"
 203            "      --volume=VOLUME                   Specify the initial (linear) volume in range 0...256\n",
 204            argv0);
 205 }
 206
 207 enum {
 208     ARG_VERSION = 256,
 209     ARG_STREAM_NAME,
 210     ARG_VOLUME
 211 };
 212
 213 int main(int argc, char *argv[]) {
 214     pa_mainloop* m = NULL;
 215     int ret = 1, r, c;
 216     char *bn, *server = NULL;
 217     const char *filename;
 218     SF_INFO sfinfo;
 219
 220     static const struct option long_options[] = {
 221         {"device",      1, NULL, 'd'},
 222         {"server",      1, NULL, 's'},
 223         {"client-name", 1, NULL, 'n'},
 224         {"stream-name", 1, NULL, ARG_STREAM_NAME},
 225         {"version",     0, NULL, ARG_VERSION},
 226         {"help",        0, NULL, 'h'},
 227         {"verbose",     0, NULL, 'v'},
 228         {"volume",      1, NULL, ARG_VOLUME},
 229         {NULL,          0, NULL, 0}
 230     };
 231
 232     if (!(bn = strrchr(argv[0], '/')))
 233         bn = argv[0];
 234     else
 235         bn++;
 236
 237     while ((c = getopt_long(argc, argv, "d:s:n:hv", long_options, NULL)) != -1) {
 238
 239         switch (c) {
 240             case 'h' :
 241                 help(bn);
 242                 ret = 0;
 243                 goto quit;
 244
 245             case ARG_VERSION:
 246                 printf("paplay "PACKAGE_VERSION"\nCompiled with libpolyp %s\nLinked with libpolyp %s\n", pa_get_headers_version(), pa_get_library_version());
 247                 ret = 0;
 248                 goto quit;
 249
 250             case 'd':
 251                 free(device);
 252                 device = strdup(optarg);
 253                 break;
 254
 255             case 's':
 256                 free(server);
 257                 server = strdup(optarg);
 258                 break;
 259
 260             case 'n':
 261                 free(client_name);
 262                 client_name = strdup(optarg);
 263                 break;
 264
 265             case ARG_STREAM_NAME:
 266                 free(stream_name);
 267                 stream_name = strdup(optarg);
 268                 break;
 269
 270             case 'v':
 271                 verbose = 1;
 272                 break;
 273
 274             case ARG_VOLUME: {
 275                 int v = atoi(optarg);
 276                 volume = v < 0 ? 0 : v;
 277                 break;
 278             }
 279
 280             default:
 281                 goto quit;
 282         }
 283     }
 284
 285
 286     filename = optind < argc ? argv[optind] : "STDIN";
 287
 288
 289     if (!client_name)
 290         client_name = strdup(bn);
 291
 292     if (!stream_name)
 293         stream_name = strdup(filename);
 294
 295     memset(&sfinfo, 0, sizeof(sfinfo));
 296
 297     if (optind < argc)
 298         sndfile = sf_open(filename, SFM_READ, &sfinfo);
 299     else
 300         sndfile = sf_open_fd(STDIN_FILENO, SFM_READ, &sfinfo, 0);
 301
 302     if (!sndfile) {
 303         fprintf(stderr, "Failed to open file '%s'\n", filename);
 304         goto quit;
 305     }
 306
 307     sample_spec.rate = sfinfo.samplerate;
 308     sample_spec.channels = sfinfo.channels;
 309
 310     switch (sfinfo.format & 0xFF) {
 311         case SF_FORMAT_PCM_16:
 312         case SF_FORMAT_PCM_U8:
 313         case SF_FORMAT_ULAW:
 314         case SF_FORMAT_ALAW:
 315             sample_spec.format = PA_SAMPLE_S16NE;
 316             readf_function = (sf_count_t (*)(SNDFILE *_sndfile, void *ptr, sf_count_t frames)) sf_readf_short;
 317             break;
 318         case SF_FORMAT_FLOAT:
 319         default:
 320             sample_spec.format = PA_SAMPLE_FLOAT32NE;
 321             readf_function = (sf_count_t (*)(SNDFILE *_sndfile, void *ptr, sf_count_t frames)) sf_readf_float;
 322             break;
 323     }
 324
 325     if (verbose) {
 326         char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
 327         pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
 328         fprintf(stderr, "Using sample spec '%s'\n", t);
 329     }
 330
 331     /* Set up a new main loop */
 332     if (!(m = pa_mainloop_new())) {
 333         fprintf(stderr, "pa_mainloop_new() failed.\n");
 334         goto quit;
 335     }
 336
 337     mainloop_api = pa_mainloop_get_api(m);
 338
 339     r = pa_signal_init(mainloop_api);
 340     assert(r == 0);
 341     pa_signal_new(SIGINT, exit_signal_callback, NULL);
 342 #ifdef SIGPIPE
 343     signal(SIGPIPE, SIG_IGN);
 344 #endif
 345
 346     /* Create a new connection context */
 347     if (!(context = pa_context_new(mainloop_api, client_name))) {
 348         fprintf(stderr, "pa_context_new() failed.\n");
 349         goto quit;
 350     }
 351
 352     pa_context_set_state_callback(context, context_state_callback, NULL);
 353
 354     /* Connect the context */
 355     pa_context_connect(context, server, 0, NULL);
 356
 357     /* Run the main loop */
 358     if (pa_mainloop_run(m, &ret) < 0) {
 359         fprintf(stderr, "pa_mainloop_run() failed.\n");
 360         goto quit;
 361     }
 362
 363 quit:
 364     if (stream)
 365         pa_stream_unref(stream);
 366
 367     if (context)
 368         pa_context_unref(context);
 369
 370     if (m) {
 371         pa_signal_done();
 372         pa_mainloop_free(m);
 373     }
 374
 375     free(server);
 376     free(device);
 377     free(client_name);
 378     free(stream_name);
 379
 380     if (sndfile)
 381         sf_close(sndfile);
 382
 383     return ret;
 384 }