| 1 | #include <stdlib.h> |
| 2 | #include <stdio.h> |
| 3 | #include <math.h> |
| 4 | #include <string.h> |
| 5 | #include <unistd.h> |
| 6 | #include <assert.h> |
| 7 | |
| 8 | #ifdef WIN32 |
| 9 | #include <windows.h> |
| 10 | #endif |
| 11 | |
| 12 | #include <shairplay/dnssd.h> |
| 13 | #include <shairplay/raop.h> |
| 14 | |
| 15 | #include <ao/ao.h> |
| 16 | |
| 17 | #include "config.h" |
| 18 | |
| 19 | typedef struct { |
| 20 | char apname[56]; |
| 21 | char password[56]; |
| 22 | unsigned short port; |
| 23 | |
| 24 | char ao_driver[56]; |
| 25 | char ao_devicename[56]; |
| 26 | char ao_deviceid[16]; |
| 27 | } shairplay_options_t; |
| 28 | |
| 29 | typedef struct { |
| 30 | ao_device *device; |
| 31 | |
| 32 | int buffering; |
| 33 | int buflen; |
| 34 | char buffer[8192]; |
| 35 | |
| 36 | float volume; |
| 37 | } shairplay_session_t; |
| 38 | |
| 39 | |
| 40 | static ao_device * |
| 41 | audio_open_device(shairplay_options_t *opt, int bits, int channels, int samplerate) |
| 42 | { |
| 43 | ao_device *device = NULL; |
| 44 | ao_option *ao_options = NULL; |
| 45 | ao_sample_format format; |
| 46 | int driver_id; |
| 47 | |
| 48 | /* Get the libao driver ID */ |
| 49 | if (strlen(opt->ao_driver)) { |
| 50 | driver_id = ao_driver_id(opt->ao_driver); |
| 51 | } else { |
| 52 | driver_id = ao_default_driver_id(); |
| 53 | } |
| 54 | |
| 55 | /* Add all available libao options */ |
| 56 | ao_append_option(&ao_options, "client_name", opt->apname); |
| 57 | if (strlen(opt->ao_devicename)) { |
| 58 | ao_append_option(&ao_options, "dev", opt->ao_devicename); |
| 59 | } |
| 60 | if (strlen(opt->ao_deviceid)) { |
| 61 | ao_append_option(&ao_options, "id", opt->ao_deviceid); |
| 62 | } |
| 63 | |
| 64 | /* Set audio format */ |
| 65 | memset(&format, 0, sizeof(format)); |
| 66 | format.bits = bits; |
| 67 | format.channels = channels; |
| 68 | format.rate = samplerate; |
| 69 | format.byte_format = AO_FMT_NATIVE; |
| 70 | |
| 71 | /* Try opening the actual device */ |
| 72 | device = ao_open_live(driver_id, &format, ao_options); |
| 73 | ao_free_options(ao_options); |
| 74 | return device; |
| 75 | } |
| 76 | |
| 77 | static void * |
| 78 | audio_init(void *cls, int bits, int channels, int samplerate) |
| 79 | { |
| 80 | shairplay_options_t *options = cls; |
| 81 | shairplay_session_t *session; |
| 82 | |
| 83 | session = calloc(1, sizeof(shairplay_session_t)); |
| 84 | assert(session); |
| 85 | |
| 86 | session->device = audio_open_device(options, bits, channels, samplerate); |
| 87 | if (session->device == NULL) { |
| 88 | printf("Error opening device %d\n", errno); |
| 89 | } |
| 90 | assert(session->device); |
| 91 | |
| 92 | session->buffering = 1; |
| 93 | session->volume = 1.0f; |
| 94 | return session; |
| 95 | } |
| 96 | |
| 97 | static int |
| 98 | audio_output(shairplay_session_t *session, const void *buffer, int buflen) |
| 99 | { |
| 100 | short *shortbuf; |
| 101 | char tmpbuf[4096]; |
| 102 | int tmpbuflen, i; |
| 103 | |
| 104 | tmpbuflen = (buflen > sizeof(tmpbuf)) ? sizeof(tmpbuf) : buflen; |
| 105 | memcpy(tmpbuf, buffer, tmpbuflen); |
| 106 | if (ao_is_big_endian()) { |
| 107 | for (i=0; i<tmpbuflen/2; i++) { |
| 108 | char tmpch = tmpbuf[i*2]; |
| 109 | tmpbuf[i*2] = tmpbuf[i*2+1]; |
| 110 | tmpbuf[i*2+1] = tmpch; |
| 111 | } |
| 112 | } |
| 113 | shortbuf = (short *)tmpbuf; |
| 114 | for (i=0; i<tmpbuflen/2; i++) { |
| 115 | shortbuf[i] = shortbuf[i] * session->volume; |
| 116 | } |
| 117 | ao_play(session->device, tmpbuf, tmpbuflen); |
| 118 | return tmpbuflen; |
| 119 | } |
| 120 | |
| 121 | static void |
| 122 | audio_process(void *cls, void *opaque, const void *buffer, int buflen) |
| 123 | { |
| 124 | shairplay_session_t *session = opaque; |
| 125 | int processed; |
| 126 | |
| 127 | if (session->buffering) { |
| 128 | printf("Buffering...\n"); |
| 129 | if (session->buflen+buflen < sizeof(session->buffer)) { |
| 130 | memcpy(session->buffer+session->buflen, buffer, buflen); |
| 131 | session->buflen += buflen; |
| 132 | return; |
| 133 | } |
| 134 | session->buffering = 0; |
| 135 | printf("Finished buffering...\n"); |
| 136 | |
| 137 | processed = 0; |
| 138 | while (processed < session->buflen) { |
| 139 | processed += audio_output(session, |
| 140 | session->buffer+processed, |
| 141 | session->buflen-processed); |
| 142 | } |
| 143 | session->buflen = 0; |
| 144 | } |
| 145 | |
| 146 | processed = 0; |
| 147 | while (processed < buflen) { |
| 148 | processed += audio_output(session, |
| 149 | buffer+processed, |
| 150 | buflen-processed); |
| 151 | } |
| 152 | } |
| 153 | |
| 154 | static void |
| 155 | audio_destroy(void *cls, void *opaque) |
| 156 | { |
| 157 | shairplay_session_t *session = opaque; |
| 158 | |
| 159 | ao_close(session->device); |
| 160 | free(session); |
| 161 | } |
| 162 | |
| 163 | static void |
| 164 | audio_set_volume(void *cls, void *opaque, float volume) |
| 165 | { |
| 166 | shairplay_session_t *session = opaque; |
| 167 | session->volume = pow(10.0, 0.05*volume); |
| 168 | } |
| 169 | |
| 170 | static int |
| 171 | parse_options(shairplay_options_t *opt, int argc, char *argv[]) |
| 172 | { |
| 173 | char *path = argv[0]; |
| 174 | char *arg; |
| 175 | |
| 176 | strcpy(opt->apname, "Shairplay"); |
| 177 | opt->port = 5000; |
| 178 | |
| 179 | while ((arg = *++argv)) { |
| 180 | if (!strcmp(arg, "-a")) { |
| 181 | strncpy(opt->apname, *++argv, sizeof(opt->apname)-1); |
| 182 | } else if (!strncmp(arg, "--apname=", 9)) { |
| 183 | strncpy(opt->apname, arg+9, sizeof(opt->apname)-1); |
| 184 | } else if (!strcmp(arg, "-p")) { |
| 185 | strncpy(opt->password, *++argv, sizeof(opt->password)-1); |
| 186 | } else if (!strncmp(arg, "--password=", 11)) { |
| 187 | strncpy(opt->password, arg+11, sizeof(opt->password)-1); |
| 188 | } else if (!strcmp(arg, "-o")) { |
| 189 | opt->port = atoi(*++argv); |
| 190 | } else if (!strncmp(arg, "--server_port=", 14)) { |
| 191 | opt->port = atoi(arg+14); |
| 192 | } else if (!strncmp(arg, "--ao_driver=", 12)) { |
| 193 | strncpy(opt->ao_driver, arg+12, sizeof(opt->ao_driver)-1); |
| 194 | } else if (!strncmp(arg, "--ao_devicename=", 16)) { |
| 195 | strncpy(opt->ao_devicename, arg+16, sizeof(opt->ao_devicename)-1); |
| 196 | } else if (!strncmp(arg, "--ao_deviceid=", 14)) { |
| 197 | strncpy(opt->ao_deviceid, arg+14, sizeof(opt->ao_deviceid)-1); |
| 198 | } else if (!strcmp(arg, "-h") || !strcmp(arg, "--help")) { |
| 199 | fprintf(stderr, "Shairplay version %s\n", VERSION); |
| 200 | fprintf(stderr, "Usage: %s [OPTION...]\n", path); |
| 201 | fprintf(stderr, "\n"); |
| 202 | fprintf(stderr, " -a, --apname=AirPort Sets Airport name\n"); |
| 203 | fprintf(stderr, " -p, --password=secret Sets password\n"); |
| 204 | fprintf(stderr, " -o, --server_port=5000 Sets port for RAOP service\n"); |
| 205 | fprintf(stderr, " --ao_driver=driver Sets the ao driver (optional)\n"); |
| 206 | fprintf(stderr, " --ao_devicename=devicename Sets the ao device name (optional)\n"); |
| 207 | fprintf(stderr, " --ao_deviceid=id Sets the ao device id (optional)\n"); |
| 208 | fprintf(stderr, " -h, --help This help\n"); |
| 209 | fprintf(stderr, "\n"); |
| 210 | return 1; |
| 211 | } |
| 212 | } |
| 213 | |
| 214 | /* Set default values for apname and port */ |
| 215 | if (!strlen(opt->apname)) { |
| 216 | strncpy(opt->apname, "Shairplay", sizeof(opt->apname)-1); |
| 217 | } |
| 218 | if (!opt->port) { |
| 219 | opt->port = 5000; |
| 220 | } |
| 221 | return 0; |
| 222 | } |
| 223 | |
| 224 | int |
| 225 | main(int argc, char *argv[]) |
| 226 | { |
| 227 | const char hwaddr[] = { 0x48, 0x5d, 0x60, 0x7c, 0xee, 0x22 }; |
| 228 | |
| 229 | shairplay_options_t options; |
| 230 | ao_device *device = NULL; |
| 231 | |
| 232 | dnssd_t *dnssd; |
| 233 | raop_t *raop; |
| 234 | raop_callbacks_t raop_cbs; |
| 235 | |
| 236 | memset(&options, 0, sizeof(options)); |
| 237 | if (parse_options(&options, argc, argv)) { |
| 238 | return 0; |
| 239 | } |
| 240 | |
| 241 | ao_initialize(); |
| 242 | |
| 243 | device = audio_open_device(&options, 16, 2, 44100); |
| 244 | if (device == NULL) { |
| 245 | fprintf(stderr, "Error opening audio device %d\n", errno); |
| 246 | fprintf(stderr, "Please check your libao settings and try again\n"); |
| 247 | return -1; |
| 248 | } else { |
| 249 | ao_close(device); |
| 250 | device = NULL; |
| 251 | } |
| 252 | |
| 253 | memset(&raop_cbs, 0, sizeof(raop_cbs)); |
| 254 | raop_cbs.cls = &options; |
| 255 | raop_cbs.audio_init = audio_init; |
| 256 | raop_cbs.audio_process = audio_process; |
| 257 | raop_cbs.audio_destroy = audio_destroy; |
| 258 | raop_cbs.audio_set_volume = audio_set_volume; |
| 259 | |
| 260 | raop = raop_init_from_keyfile(10, &raop_cbs, "airport.key", NULL); |
| 261 | if (raop == NULL) { |
| 262 | fprintf(stderr, "Could not initialize the RAOP service\n"); |
| 263 | return -1; |
| 264 | } |
| 265 | |
| 266 | raop_set_log_level(raop, RAOP_LOG_DEBUG); |
| 267 | raop_start(raop, &options.port, hwaddr, sizeof(hwaddr), NULL); |
| 268 | |
| 269 | dnssd = dnssd_init(NULL); |
| 270 | dnssd_register_raop(dnssd, options.apname, options.port, hwaddr, sizeof(hwaddr), 0); |
| 271 | |
| 272 | #ifndef WIN32 |
| 273 | sleep(100); |
| 274 | #else |
| 275 | Sleep(100*1000); |
| 276 | #endif |
| 277 | |
| 278 | dnssd_unregister_raop(dnssd); |
| 279 | dnssd_destroy(dnssd); |
| 280 | |
| 281 | raop_stop(raop); |
| 282 | raop_destroy(raop); |
| 283 | |
| 284 | ao_shutdown(); |
| 285 | |
| 286 | return 0; |
| 287 | } |