Make para_fsck work without specifying tables.
[paraslash.git] / fade.c
1 /*
2 * Copyright (C) 1998-2007 Andre Noll <maan@systemlinux.org>
3 *
4 * Licensed under the GPL v2. For licencing details see COPYING.
5 */
6
7 /** \file fade.c a volume fader and alarm clock */
8
9 #include <sys/types.h>
10 #include <dirent.h>
11
12 #include "fade.cmdline.h"
13 #include "para.h"
14 #include "fd.h"
15
16 #include <stropts.h>
17 #include <ctype.h>
18 #include <curses.h>
19 #include <stdlib.h> /* EXIT_SUCCESS */
20 #include <unistd.h>
21 #include <signal.h>
22 #include <string.h>
23 #include <limits.h>
24 #include <linux/soundcard.h>
25 #include "string.h"
26
27
28 struct fade_args_info conf;
29
30 void para_log(__a_unused int ll, const char *fmt,...)
31 {
32 va_list argp;
33 time_t t1;
34 struct tm *tm;
35
36 time(&t1);
37 tm = localtime(&t1);
38 printf("%d:%02d:%02d ", tm->tm_hour, tm->tm_min, tm->tm_sec);
39 va_start(argp, fmt);
40 vprintf(fmt, argp);
41 va_end(argp);
42 }
43
44 /*
45 * open mixer device
46 */
47 static int open_mixer(void)
48 {
49 return open(conf.mixer_device_arg, O_RDWR, 0);
50 }
51
52 /*
53 * get volume via mixer_fd
54 */
55 static int do_get_vol(int mixer_fd)
56 {
57 int volume;
58
59 if (ioctl(mixer_fd, MIXER_READ(SOUND_MIXER_VOLUME), &volume) < 0)
60 return -1;
61 /* take the mean value of left and right volume */
62 return (volume % 256 + (volume >> 8)) / 2;
63 }
64
65 /*
66 * open mixer, get volume and close mixer
67 */
68 static int get_vol(void)
69 {
70 int mixer_fd;
71 int volume;
72
73 mixer_fd = open_mixer();
74 if (mixer_fd < 0)
75 return -1;
76 volume = do_get_vol(mixer_fd);
77 close(mixer_fd);
78 return volume;
79 }
80
81 /*
82 * set volume via mixer_fd
83 */
84 static int do_set_vol(int mixer_fd, int volume)
85 {
86 int tmp = (volume << 8) + volume;
87
88 if (ioctl(mixer_fd, MIXER_WRITE(SOUND_MIXER_VOLUME), &tmp) < 0)
89 return -1;
90 return 1;
91 }
92
93 /*
94 * open mixer, set volume and close mixer
95 */
96 static int set_vol(int volume)
97 {
98 int mixer_fd, ret = open_mixer();
99
100 if (ret < 0)
101 return ret;
102 mixer_fd = ret;
103 ret = do_set_vol(mixer_fd, volume);
104 close(mixer_fd);
105 return ret;
106 }
107
108 /*
109 * Open mixer, get volume, fade to new_vol in secs seconds and
110 * close mixer
111 */
112 static void fade(int new_vol, int fade_time)
113 {
114 int vol, mixer_fd, diff, incr;
115 unsigned secs;
116 struct timespec ts;
117 unsigned long long tmp, tmp2; /* Careful with that axe, Eugene! */
118
119 if (fade_time <= 0)
120 return;
121 secs = fade_time;
122 PARA_NOTICE_LOG("fading to %d in %d seconds\n", new_vol, secs);
123 mixer_fd = open_mixer();
124 if (mixer_fd < 0)
125 return;
126 vol = do_get_vol(mixer_fd);
127 if (vol < 0)
128 goto out;
129 diff = new_vol - vol;
130 if (!diff) {
131 sleep(secs);
132 goto out;
133 }
134 incr = diff > 0? 1: -1;
135 diff = diff > 0? diff: -diff;
136 tmp = secs * 1000 / diff;
137 tmp2 = tmp % 1000;
138 while ((new_vol - vol) * incr > 0) {
139 ts.tv_nsec = tmp2 * 1000000; /* really nec ?*/
140 ts.tv_sec = tmp / 1000; /* really nec ?*/
141 //printf("ts.tv_sec: %i\n", ts.tv_nsec);
142 vol += incr;
143 if (do_set_vol(mixer_fd, vol) < 0)
144 goto out;
145 //printf("vol = %i\n", vol);
146 nanosleep(&ts, NULL);
147 }
148 out:
149 close(mixer_fd);
150 }
151
152 static int client_cmd(const char *cmd,...)
153 {
154 int ret, fds[3] = {0, 0, 0};
155 pid_t pid;
156 char *cmdline = make_message(BINDIR "/para_client %s", cmd);
157
158 PARA_INFO_LOG("%s\n", cmdline);
159 ret = para_exec_cmdline_pid(&pid, cmdline, fds);
160 free(cmdline);
161 return ret;
162 }
163
164 /*
165 * sleep
166 */
167 static void sweet_dreams(void)
168 {
169 time_t t1, wake_time_epoch;
170 unsigned int delay;
171 struct tm *tm;
172 int min = conf.wake_min_arg;
173 char *fa_stream = conf.fa_stream_arg;
174 char *wake_stream = conf.wake_stream_arg;
175 //char *current_stream = stat_items[STREAM].content;
176 int wf = conf.wake_fade_arg;
177 int sf = conf.fa_fade_arg;
178 int wv = conf.wake_vol_arg;
179 int sv = conf.fa_vol_arg;
180 int iv = conf.sleep_ivol_arg;
181 char *cmd, *sleep_stream = conf.sleep_stream_given?
182 conf.sleep_stream_arg : NULL;
183
184 /* calculate wake time */
185 time(&t1);
186 if (conf.wake_hour_given) {
187 int hour = conf.wake_hour_arg;
188 tm = localtime(&t1);
189 if (tm->tm_hour > hour || (tm->tm_hour == hour && tm->tm_min> min)) {
190 t1 += 86400; /* wake time is tomorrow */
191 tm = localtime(&t1);
192 }
193 tm->tm_hour = hour;
194 tm->tm_min = min;
195 tm->tm_sec = 0;
196 } else {
197 t1 += 8 * 60 * 60;
198 PARA_INFO_LOG("default wake time: %lu\n", t1);
199 tm = localtime(&t1);
200 }
201 wake_time_epoch = mktime(tm);
202 PARA_INFO_LOG("waketime: %s", asctime(tm));
203 if (sf) {
204 PARA_INFO_LOG("initial volume: %d\n", iv);
205 set_vol(iv);
206 cmd = make_message("csp %s\n", fa_stream);
207 client_cmd(cmd);
208 free(cmd);
209 fade(sv, sf);
210 }
211 if (sleep_stream) {
212 cmd = make_message("csp %s\n", sleep_stream);
213 client_cmd(cmd);
214 free(cmd);
215 } else
216 client_cmd("stop");
217 if (!wf)
218 return;
219 for (;;) {
220 time(&t1);
221 if (wake_time_epoch <= t1 + wf)
222 break;
223 delay = wake_time_epoch - t1 - wf;
224 PARA_INFO_LOG("sleeping %u seconds (%u:%02u)\n",
225 delay, delay / 3600,
226 (delay % 3600) / 60);
227 sleep(delay);
228 }
229 cmd = make_message("csp %s\n", wake_stream);
230 client_cmd(cmd);
231 free(cmd);
232 fade(wv, wf);
233 PARA_INFO_LOG("%s", "fade complete, returning\n");
234 }
235
236 static void snooze(void)
237 {
238 unsigned sleep_time;
239
240 if (conf.snooze_time_arg <= 0)
241 return;
242 sleep_time = conf.snooze_time_arg;
243 if (get_vol() < conf.snooze_out_vol_arg)
244 set_vol(conf.snooze_out_vol_arg);
245 else
246 fade(conf.snooze_out_vol_arg, conf.snooze_out_fade_arg);
247 client_cmd("pause");
248 PARA_NOTICE_LOG("%d seconds snooze time...\n", conf.snooze_time_arg);
249 sleep(sleep_time);
250 client_cmd("play");
251 fade(conf.snooze_in_vol_arg, conf.snooze_in_fade_arg);
252 }
253
254 static int configfile_exists(void)
255 {
256 static char *config_file;
257
258 if (!conf.config_file_given) {
259 char *home = para_homedir();
260 free(config_file);
261 config_file = make_message("%s/.paraslash/fade.conf", home);
262 free(home);
263 conf.config_file_arg = config_file;
264 }
265 return file_exists(conf.config_file_arg);
266 }
267
268
269 int main(int argc, char *argv[])
270 {
271 int ret;
272
273 if (fade_cmdline_parser(argc, argv, &conf))
274 exit(EXIT_FAILURE);
275 HANDLE_VERSION_FLAG("fade", conf);
276 ret = configfile_exists();
277 if (!ret && conf.config_file_given) {
278 PARA_EMERG_LOG("can not read config file %s\n",
279 conf.config_file_arg);
280 exit(EXIT_FAILURE);
281 }
282 if (ret) {
283 struct fade_cmdline_parser_params params = {
284 .override = 0,
285 .initialize = 0,
286 .check_required = 0,
287 .check_ambiguity = 0
288 };
289 fade_cmdline_parser_config_file(conf.config_file_arg,
290 &conf, &params);
291 }
292 ret = open_mixer();
293 if (ret < 0) {
294 PARA_EMERG_LOG("can not open mixer device %s.",
295 conf.mixer_device_arg);
296 exit(EXIT_FAILURE);
297 }
298 close(ret);
299 ret = 0;
300 // setlinebuf(stdout);
301 if (!strcmp(conf.mode_arg, "sleep")) {
302 sweet_dreams();
303 goto out;
304 }
305 if (!strcmp(conf.mode_arg, "fade")) {
306 fade(conf.fade_vol_arg, conf.fade_time_arg);
307 goto out;
308 }
309 if (!strcmp(conf.mode_arg, "snooze")) {
310 snooze();
311 goto out;
312 }
313 ret = -1;
314 out:
315 return ret < 0? EXIT_FAILURE : EXIT_SUCCESS;
316 }