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 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/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 != 8
  44 #error Invalid Polypaudio API version
  45 #endif
  46
  47 static pa_context *context = NULL;
  48 static pa_stream *stream = NULL;
  49 static 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 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(pa_context*c, void *userdata) {
  70     pa_context_disconnect(c);
  71 }
  72
  73 /* Stream draining complete */
  74 static void stream_drain_complete(pa_stream*s, int success, void *userdata) {
  75     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(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(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(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             pa_cvolume cv;
 160
 161             assert(c && !stream);
 162
 163             if (verbose)
 164                 fprintf(stderr, "Connection established.\n");
 165
 166             stream = pa_stream_new(c, stream_name, &sample_spec, NULL);
 167             assert(stream);
 168
 169             pa_stream_set_state_callback(stream, stream_state_callback, NULL);
 170             pa_stream_set_write_callback(stream, stream_write_callback, NULL);
 171             pa_stream_connect_playback(stream, device, NULL, 0, pa_cvolume_set(&cv, PA_CHANNELS_MAX, volume));
 172
 173             break;
 174         }
 175
 176         case PA_CONTEXT_TERMINATED:
 177             quit(0);
 178             break;
 179
 180         case PA_CONTEXT_FAILED:
 181         default:
 182             fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
 183             quit(1);
 184     }
 185 }
 186
 187 /* UNIX signal to quit recieved */
 188 static void exit_signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
 189     if (verbose)
 190         fprintf(stderr, "Got SIGINT, exiting.\n");
 191     quit(0);
 192
 193 }
 194
 195 static void help(const char *argv0) {
 196
 197     printf("%s [options] [FILE]\n\n"
 198            "  -h, --help                            Show this help\n"
 199            "      --version                         Show version\n\n"
 200            "  -v, --verbose                         Enable verbose operations\n\n"
 201            "  -s, --server=SERVER                   The name of the server to connect to\n"
 202            "  -d, --device=DEVICE                   The name of the sink/source to connect to\n"
 203            "  -n, --client-name=NAME                How to call this client on the server\n"
 204            "      --stream-name=NAME                How to call this stream on the server\n"
 205            "      --volume=VOLUME                   Specify the initial (linear) volume in range 0...256\n",
 206            argv0);
 207 }
 208
 209 enum {
 210     ARG_VERSION = 256,
 211     ARG_STREAM_NAME,
 212     ARG_VOLUME
 213 };
 214
 215 int main(int argc, char *argv[]) {
 216     pa_mainloop* m = NULL;
 217     int ret = 1, r, c;
 218     char *bn, *server = NULL;
 219     const char *filename;
 220     SF_INFO sfinfo;
 221
 222     static const struct option long_options[] = {
 223         {"device",      1, NULL, 'd'},
 224         {"server",      1, NULL, 's'},
 225         {"client-name", 1, NULL, 'n'},
 226         {"stream-name", 1, NULL, ARG_STREAM_NAME},
 227         {"version",     0, NULL, ARG_VERSION},
 228         {"help",        0, NULL, 'h'},
 229         {"verbose",     0, NULL, 'v'},
 230         {"volume",      1, NULL, ARG_VOLUME},
 231         {NULL,          0, NULL, 0}
 232     };
 233
 234     if (!(bn = strrchr(argv[0], '/')))
 235         bn = argv[0];
 236     else
 237         bn++;
 238
 239     while ((c = getopt_long(argc, argv, "d:s:n:hv", long_options, NULL)) != -1) {
 240
 241         switch (c) {
 242             case 'h' :
 243                 help(bn);
 244                 ret = 0;
 245                 goto quit;
 246
 247             case ARG_VERSION:
 248                 printf("paplay "PACKAGE_VERSION"\nCompiled with libpolyp %s\nLinked with libpolyp %s\n", pa_get_headers_version(), pa_get_library_version());
 249                 ret = 0;
 250                 goto quit;
 251
 252             case 'd':
 253                 free(device);
 254                 device = strdup(optarg);
 255                 break;
 256
 257             case 's':
 258                 free(server);
 259                 server = strdup(optarg);
 260                 break;
 261
 262             case 'n':
 263                 free(client_name);
 264                 client_name = strdup(optarg);
 265                 break;
 266
 267             case ARG_STREAM_NAME:
 268                 free(stream_name);
 269                 stream_name = strdup(optarg);
 270                 break;
 271
 272             case 'v':
 273                 verbose = 1;
 274                 break;
 275
 276             case ARG_VOLUME: {
 277                 int v = atoi(optarg);
 278                 volume = v < 0 ? 0 : v;
 279                 break;
 280             }
 281
 282             default:
 283                 goto quit;
 284         }
 285     }
 286
 287
 288     filename = optind < argc ? argv[optind] : "STDIN";
 289
 290
 291     if (!client_name)
 292         client_name = strdup(bn);
 293
 294     if (!stream_name)
 295         stream_name = strdup(filename);
 296
 297     memset(&sfinfo, 0, sizeof(sfinfo));
 298
 299     if (optind < argc)
 300         sndfile = sf_open(filename, SFM_READ, &sfinfo);
 301     else
 302         sndfile = sf_open_fd(STDIN_FILENO, SFM_READ, &sfinfo, 0);
 303
 304     if (!sndfile) {
 305         fprintf(stderr, "Failed to open file '%s'\n", filename);
 306         goto quit;
 307     }
 308
 309     sample_spec.rate = sfinfo.samplerate;
 310     sample_spec.channels = sfinfo.channels;
 311
 312     switch (sfinfo.format & 0xFF) {
 313         case SF_FORMAT_PCM_16:
 314         case SF_FORMAT_PCM_U8:
 315         case SF_FORMAT_ULAW:
 316         case SF_FORMAT_ALAW:
 317             sample_spec.format = PA_SAMPLE_S16NE;
 318             readf_function = (sf_count_t (*)(SNDFILE *_sndfile, void *ptr, sf_count_t frames)) sf_readf_short;
 319             break;
 320         case SF_FORMAT_FLOAT:
 321         default:
 322             sample_spec.format = PA_SAMPLE_FLOAT32NE;
 323             readf_function = (sf_count_t (*)(SNDFILE *_sndfile, void *ptr, sf_count_t frames)) sf_readf_float;
 324             break;
 325     }
 326
 327     if (verbose) {
 328         char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
 329         pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
 330         fprintf(stderr, "Using sample spec '%s'\n", t);
 331     }
 332
 333     /* Set up a new main loop */
 334     if (!(m = pa_mainloop_new())) {
 335         fprintf(stderr, "pa_mainloop_new() failed.\n");
 336         goto quit;
 337     }
 338
 339     mainloop_api = pa_mainloop_get_api(m);
 340
 341     r = pa_signal_init(mainloop_api);
 342     assert(r == 0);
 343     pa_signal_new(SIGINT, exit_signal_callback, NULL);
 344 #ifdef SIGPIPE
 345     signal(SIGPIPE, SIG_IGN);
 346 #endif
 347
 348     /* Create a new connection context */
 349     if (!(context = pa_context_new(mainloop_api, client_name))) {
 350         fprintf(stderr, "pa_context_new() failed.\n");
 351         goto quit;
 352     }
 353
 354     pa_context_set_state_callback(context, context_state_callback, NULL);
 355
 356     /* Connect the context */
 357     pa_context_connect(context, server, 1, NULL);
 358
 359     /* Run the main loop */
 360     if (pa_mainloop_run(m, &ret) < 0) {
 361         fprintf(stderr, "pa_mainloop_run() failed.\n");
 362         goto quit;
 363     }
 364
 365 quit:
 366     if (stream)
 367         pa_stream_unref(stream);
 368
 369     if (context)
 370         pa_context_unref(context);
 371
 372     if (m) {
 373         pa_signal_done();
 374         pa_mainloop_free(m);
 375     }
 376
 377     free(server);
 378     free(device);
 379     free(client_name);
 380     free(stream_name);
 381
 382     if (sndfile)
 383         sf_close(sndfile);
 384
 385     return ret;
 386 }