code.delx.au - pulseaudio/blob - polyp/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 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 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/polyplib.h>
  38 #include <polyp/polyplib-error.h>
  39 #include <polyp/mainloop.h>
  40 #include <polyp/mainloop-signal.h>
  41 #include <polyp/polyplib-version.h>
  42
  43 #if PA_API_VERSION != 6
  44 #error Invalid Polypaudio API version
  45 #endif
  46
  47 static struct pa_context *context = NULL;
  48 static struct pa_stream *stream = NULL;
  49 static struct pa_mainloop_api *mainloop_api = NULL;
  50
  51 static char *stream_name = NULL, *client_name = NULL, *device = NULL;
  52
  53 static int verbose = 0;
  54 static pa_volume_t volume = PA_VOLUME_NORM;
  55
  56 static SNDFILE* sndfile = NULL;
  57
  58 static struct pa_sample_spec sample_spec = { 0, 0, 0 };
  59
  60 static sf_count_t (*readf_function)(SNDFILE *sndfile, void *ptr, sf_count_t frames);
  61
  62 /* A shortcut for terminating the application */
  63 static void quit(int ret) {
  64     assert(mainloop_api);
  65     mainloop_api->quit(mainloop_api, ret);
  66 }
  67
  68 /* Connection draining complete */
  69 static void context_drain_complete(struct pa_context*c, void *userdata) {
  70     pa_context_disconnect(c);
  71 }
  72
  73 /* Stream draining complete */
  74 static void stream_drain_complete(struct pa_stream*s, int success, void *userdata) {
  75     struct pa_operation *o;
  76
  77     if (!success) {
  78         fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
  79         quit(1);
  80     }
  81
  82     if (verbose)
  83         fprintf(stderr, "Playback stream drained.\n");
  84
  85     pa_stream_disconnect(stream);
  86     pa_stream_unref(stream);
  87     stream = NULL;
  88
  89     if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
  90         pa_context_disconnect(context);
  91     else {
  92         pa_operation_unref(o);
  93
  94         if (verbose)
  95             fprintf(stderr, "Draining connection to server.\n");
  96     }
  97 }
  98
  99 /* This is called whenever new data may be written to the stream */
 100 static void stream_write_callback(struct pa_stream *s, size_t length, void *userdata) {
 101     size_t k;
 102     sf_count_t f, n;
 103     void *data;
 104     assert(s && length);
 105
 106     if (!sndfile)
 107         return;
 108
 109     k = pa_frame_size(&sample_spec);
 110
 111     data = malloc(length);
 112
 113     n = length/k;
 114
 115     f = readf_function(sndfile, data, n);
 116
 117     if (f > 0)
 118         pa_stream_write(s, data, f*k, free, 0);
 119
 120     if (f < n) {
 121         sf_close(sndfile);
 122         sndfile = NULL;
 123         pa_operation_unref(pa_stream_drain(s, stream_drain_complete, NULL));
 124     }
 125 }
 126
 127 /* This routine is called whenever the stream state changes */
 128 static void stream_state_callback(struct pa_stream *s, void *userdata) {
 129     assert(s);
 130
 131     switch (pa_stream_get_state(s)) {
 132         case PA_STREAM_CREATING:
 133         case PA_STREAM_TERMINATED:
 134             break;
 135
 136         case PA_STREAM_READY:
 137             if (verbose)
 138                 fprintf(stderr, "Stream successfully created\n");
 139             break;
 140
 141         case PA_STREAM_FAILED:
 142         default:
 143             fprintf(stderr, "Stream errror: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
 144             quit(1);
 145     }
 146 }
 147
 148 /* This is called whenever the context status changes */
 149 static void context_state_callback(struct pa_context *c, void *userdata) {
 150     assert(c);
 151
 152     switch (pa_context_get_state(c)) {
 153         case PA_CONTEXT_CONNECTING:
 154         case PA_CONTEXT_AUTHORIZING:
 155         case PA_CONTEXT_SETTING_NAME:
 156             break;
 157
 158         case PA_CONTEXT_READY:
 159
 160             assert(c && !stream);
 161
 162             if (verbose)
 163                 fprintf(stderr, "Connection established.\n");
 164
 165             stream = pa_stream_new(c, stream_name, &sample_spec);
 166             assert(stream);
 167
 168             pa_stream_set_state_callback(stream, stream_state_callback, NULL);
 169             pa_stream_set_write_callback(stream, stream_write_callback, NULL);
 170             pa_stream_connect_playback(stream, device, NULL, 0, volume);
 171
 172             break;
 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(struct pa_mainloop_api*m, struct 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     struct pa_mainloop* m = NULL;
 215     int ret = 1, r, c;
 216     char *bn, *server = NULL, *filename;
 217     SF_INFO sfinfo;
 218
 219     static const struct option long_options[] = {
 220         {"device",      1, NULL, 'd'},
 221         {"server",      1, NULL, 's'},
 222         {"client-name", 1, NULL, 'n'},
 223         {"stream-name", 1, NULL, ARG_STREAM_NAME},
 224         {"version",     0, NULL, ARG_VERSION},
 225         {"help",        0, NULL, 'h'},
 226         {"verbose",     0, NULL, 'v'},
 227         {"volume",      1, NULL, ARG_VOLUME},
 228         {NULL,          0, NULL, 0}
 229     };
 230
 231     if (!(bn = strrchr(argv[0], '/')))
 232         bn = argv[0];
 233     else
 234         bn++;
 235
 236     while ((c = getopt_long(argc, argv, "d:s:n:hv", long_options, NULL)) != -1) {
 237
 238         switch (c) {
 239             case 'h' :
 240                 help(bn);
 241                 ret = 0;
 242                 goto quit;
 243
 244             case ARG_VERSION:
 245                 printf("paplay "PACKAGE_VERSION"\nCompiled with libpolyp %s\nLinked with libpolyp %s\n", pa_get_headers_version(), pa_get_library_version());
 246                 ret = 0;
 247                 goto quit;
 248
 249             case 'd':
 250                 free(device);
 251                 device = strdup(optarg);
 252                 break;
 253
 254             case 's':
 255                 free(server);
 256                 server = strdup(optarg);
 257                 break;
 258
 259             case 'n':
 260                 free(client_name);
 261                 client_name = strdup(optarg);
 262                 break;
 263
 264             case ARG_STREAM_NAME:
 265                 free(stream_name);
 266                 stream_name = strdup(optarg);
 267                 break;
 268
 269             case 'v':
 270                 verbose = 1;
 271                 break;
 272
 273             case ARG_VOLUME: {
 274                 int v = atoi(optarg);
 275                 volume = v < 0 ? 0 : v;
 276                 break;
 277             }
 278
 279             default:
 280                 goto quit;
 281         }
 282     }
 283
 284
 285     filename = optind < argc ? argv[optind] : "STDIN";
 286
 287
 288     if (!client_name)
 289         client_name = strdup(bn);
 290
 291     if (!stream_name)
 292         stream_name = strdup(filename);
 293
 294     memset(&sfinfo, 0, sizeof(sfinfo));
 295
 296     if (optind < argc)
 297         sndfile = sf_open(filename, SFM_READ, &sfinfo);
 298     else
 299         sndfile = sf_open_fd(STDIN_FILENO, SFM_READ, &sfinfo, 0);
 300
 301     if (!sndfile) {
 302         fprintf(stderr, "Failed to open file '%s'\n", filename);
 303         goto quit;
 304     }
 305
 306     sample_spec.rate = sfinfo.samplerate;
 307     sample_spec.channels = sfinfo.channels;
 308
 309     switch (sfinfo.format & 0xFF) {
 310         case SF_FORMAT_PCM_16:
 311         case SF_FORMAT_PCM_U8:
 312         case SF_FORMAT_ULAW:
 313         case SF_FORMAT_ALAW:
 314             sample_spec.format = PA_SAMPLE_S16NE;
 315             readf_function = (sf_count_t (*)(SNDFILE *sndfile, void *ptr, sf_count_t frames)) sf_readf_short;
 316             break;
 317         case SF_FORMAT_FLOAT:
 318         default:
 319             sample_spec.format = PA_SAMPLE_FLOAT32NE;
 320             readf_function = (sf_count_t (*)(SNDFILE *sndfile, void *ptr, sf_count_t frames)) sf_readf_float;
 321             break;
 322     }
 323
 324     if (verbose) {
 325         char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
 326         pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
 327         fprintf(stderr, "Using sample spec '%s'\n", t);
 328     }
 329
 330     /* Set up a new main loop */
 331     if (!(m = pa_mainloop_new())) {
 332         fprintf(stderr, "pa_mainloop_new() failed.\n");
 333         goto quit;
 334     }
 335
 336     mainloop_api = pa_mainloop_get_api(m);
 337
 338     r = pa_signal_init(mainloop_api);
 339     assert(r == 0);
 340     pa_signal_new(SIGINT, exit_signal_callback, NULL);
 341     signal(SIGPIPE, SIG_IGN);
 342
 343     /* Create a new connection context */
 344     if (!(context = pa_context_new(mainloop_api, client_name))) {
 345         fprintf(stderr, "pa_context_new() failed.\n");
 346         goto quit;
 347     }
 348
 349     pa_context_set_state_callback(context, context_state_callback, NULL);
 350
 351     /* Connect the context */
 352     pa_context_connect(context, server, 1, NULL);
 353
 354     /* Run the main loop */
 355     if (pa_mainloop_run(m, &ret) < 0) {
 356         fprintf(stderr, "pa_mainloop_run() failed.\n");
 357         goto quit;
 358     }
 359
 360 quit:
 361     if (stream)
 362         pa_stream_unref(stream);
 363
 364     if (context)
 365         pa_context_unref(context);
 366
 367     if (m) {
 368         pa_signal_done();
 369         pa_mainloop_free(m);
 370     }
 371
 372     free(server);
 373     free(device);
 374     free(client_name);
 375     free(stream_name);
 376
 377     if (sndfile)
 378         sf_close(sndfile);
 379
 380     return ret;
 381 }