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ad58f7a2 JVH |
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 | ||
cf9b3c34 | 260 | raop = raop_init_from_keyfile(10, &raop_cbs, "airport.key", NULL); |
ad58f7a2 JVH |
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 | } |