more audiod improvements
[paraslash.git] / fade.c
1 /*
2 * Copyright (C) 1998-2005 Andre Noll <maan@systemlinux.org>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
17 */
18
19 /** \file fade.c a volume fader and alarm clock */
20
21 #include "fade.cmdline.h"
22 #include "para.h"
23 #include "fd.h"
24
25 #include <stropts.h>
26 #include <ctype.h>
27 #include <curses.h>
28 #include <stdlib.h> /* EXIT_SUCCESS */
29 #include <unistd.h>
30 #include <signal.h>
31 #include <string.h>
32 #include <limits.h>
33 #include <linux/soundcard.h>
34 #include "string.h"
35
36
37 struct gengetopt_args_info args_info;
38
39 void para_log(__a_unused int ll, const char *fmt,...)
40 {
41 va_list argp;
42 time_t t1;
43 struct tm *tm;
44
45 time(&t1);
46 tm = localtime(&t1);
47 printf("%d:%02d:%02d ", tm->tm_hour, tm->tm_min, tm->tm_sec);
48 va_start(argp, fmt);
49 vprintf(fmt, argp);
50 va_end(argp);
51 }
52
53 /*
54 * open mixer device
55 */
56 static int open_mixer(void)
57 {
58 int mixer_fd;
59
60 if ((mixer_fd = open(args_info.mixer_device_arg, O_RDWR, 0)) < 0)
61 return -1;
62 return mixer_fd;
63 }
64
65 /*
66 * get volume via mixer_fd
67 */
68 static int do_get_vol(int mixer_fd)
69 {
70 int volume;
71
72 if (ioctl(mixer_fd, MIXER_READ(SOUND_MIXER_VOLUME), &volume) < 0)
73 return -1;
74 /* take the mean value of left and right volume */
75 return (volume % 256 + (volume >> 8)) / 2;
76 }
77
78 /*
79 * open mixer, get volume and close mixer
80 */
81 static int get_vol(void)
82 {
83 int mixer_fd;
84 int volume;
85
86 mixer_fd = open_mixer();
87 if (mixer_fd < 0)
88 return -1;
89 volume = do_get_vol(mixer_fd);
90 close(mixer_fd);
91 return volume;
92 }
93
94 /*
95 * set volume via mixer_fd
96 */
97 static int do_set_vol(int mixer_fd, int volume)
98 {
99 int tmp;
100 tmp = (volume << 8) + volume;
101 if (ioctl(mixer_fd, MIXER_WRITE(SOUND_MIXER_VOLUME), &tmp) < 0)
102 return 0;
103 return 1;
104 }
105
106 /*
107 * open mixer, set volume and close mixer
108 */
109 static int set_vol(int volume)
110 {
111 int mixer_fd;
112 int ret;
113
114 mixer_fd = open_mixer();
115 ret = 0;
116 if (mixer_fd < 0)
117 goto out;
118 if (!do_set_vol(mixer_fd, volume))
119 goto out;
120 ret = 1;
121 close(mixer_fd);
122 out:
123 return ret;
124 }
125
126 /*
127 * Open mixer, get volume, fade to new_vol in secs seconds and
128 * close mixer
129 */
130 static int fade(int new_vol, unsigned int secs)
131 {
132 int vol, mixer_fd = -1, diff, incr, ret;
133 struct timespec ts;
134 unsigned long long tmp, tmp2; /* Careful with that axe, Eugene! */
135
136 PARA_NOTICE_LOG("fading to %d in %d seconds\n", new_vol, secs);
137 ret = 0;
138 if (!secs)
139 goto out;
140 mixer_fd = open_mixer();
141 if (mixer_fd < 0)
142 goto out;
143 vol = do_get_vol(mixer_fd);
144 if (vol < 0)
145 goto out;
146 diff = new_vol - vol;
147 if (!diff) {
148 sleep(secs);
149 ret = 1;
150 goto out;
151 }
152 incr = diff > 0? 1: -1;
153 diff = diff > 0? diff: -diff;
154 tmp = secs * 1000 / diff;
155 tmp2 = tmp % 1000;
156 while ((new_vol - vol) * incr > 0) {
157 ts.tv_nsec = tmp2 * 1000000; /* really nec ?*/
158 ts.tv_sec = tmp / 1000; /* really nec ?*/
159 //printf("ts.tv_sec: %i\n", ts.tv_nsec);
160 vol += incr;
161 if (!do_set_vol(mixer_fd, vol))
162 goto out;
163 //printf("vol = %i\n", vol);
164 nanosleep(&ts, NULL);
165 }
166 out:
167 if (mixer_fd >= 0)
168 close(mixer_fd);
169 return 1;
170 }
171
172 static int client_cmd(const char *cmd,...)
173 {
174 int ret, fds[3] = {0, 0, 0};
175 pid_t pid;
176 char *cmdline = make_message(BINDIR "/para_client %s", cmd);
177 PARA_INFO_LOG("%s", cmdline);
178 ret = para_exec_cmdline_pid(&pid, cmdline, fds);
179 free(cmdline);
180 return ret;
181 }
182
183 /*
184 * sleep
185 */
186 static void sweet_dreams(void)
187 {
188 time_t t1, wake_time_epoch;
189 unsigned int delay;
190 struct tm *tm;
191 int hour = args_info.wake_hour_arg;
192 int min = args_info.wake_min_arg;
193 char *fa_stream = args_info.fa_stream_arg;
194 char *wake_stream = args_info.wake_stream_arg;
195 //char *current_stream = stat_items[STREAM].content;
196 int wf = args_info.wake_fade_arg;
197 int sf = args_info.fa_fade_arg;
198 int wv = args_info.wake_vol_arg;
199 int sv = args_info.fa_vol_arg;
200 int iv = args_info.sleep_ivol_arg;
201 char *cmd, *sleep_stream = args_info.sleep_stream_given?
202 args_info.sleep_stream_arg : NULL;
203
204 if (sf) {
205 PARA_INFO_LOG("initial volume: %d\n", iv);
206 set_vol(iv);
207 cmd = make_message("csp %s\n", fa_stream);
208 client_cmd(cmd);
209 free(cmd);
210 fade(sv, sf);
211 }
212 if (sleep_stream) {
213 cmd = make_message("csp %s\n", sleep_stream);
214 client_cmd(cmd);
215 free(cmd);
216 } else
217 client_cmd("stop");
218 if (!wf)
219 return;
220 /* calculate wake time */
221 time(&t1);
222 tm = localtime(&t1);
223 if (tm->tm_hour > hour || (tm->tm_hour == hour && tm->tm_min> min)) {
224 /* wake time is tomorrow */
225 t1 += 86400;
226 tm = localtime(&t1);
227 t1 -= 86400;
228 }
229 tm->tm_hour = hour;
230 tm->tm_min = min;
231 tm->tm_sec = 0;
232 wake_time_epoch = mktime(tm);
233 PARA_INFO_LOG("waketime: %s", asctime(tm));
234 while (wake_time_epoch > t1 + wf) {
235 delay = wake_time_epoch - t1 - wf;
236 PARA_INFO_LOG("sleeping %u seconds (%u:%02u)\n",
237 delay, delay / 3600,
238 (delay % 3600) / 60);
239 sleep(delay);
240 time(&t1);
241 }
242 cmd = make_message("csp %s\n", wake_stream);
243 client_cmd(cmd);
244 free(cmd);
245 fade(wv, wf);
246 PARA_INFO_LOG("%s", "fade complete, returning\n");
247 }
248
249 static void snooze(void)
250 {
251 if (get_vol() < args_info.snooze_out_vol_arg)
252 set_vol(args_info.snooze_out_vol_arg);
253 else
254 fade(args_info.snooze_out_vol_arg, args_info.snooze_out_fade_arg);
255 client_cmd("pause");
256 PARA_NOTICE_LOG("%d seconds snooze time...\n", args_info.snooze_time_arg);
257 sleep(args_info.snooze_time_arg);
258 client_cmd("play");
259 fade(args_info.snooze_in_vol_arg, args_info.snooze_in_fade_arg);
260 }
261
262 static int configfile_exists(void)
263 {
264 static char *config_file;
265
266 if (!args_info.config_file_given) {
267 char *home = para_homedir();
268 const char *conf = ".paraslash/fade.conf";
269 free(config_file);
270 config_file = make_message("%s/%s", home, conf);
271 free(home);
272 args_info.config_file_arg = config_file;
273 }
274 return file_exists(args_info.config_file_arg);
275 }
276
277
278 int main(int argc, char *argv[])
279 {
280 int ret;
281
282 if (cmdline_parser(argc, argv, &args_info))
283 exit(EXIT_FAILURE);
284 ret = configfile_exists();
285 if (!ret && args_info.config_file_given) {
286 PARA_EMERG_LOG("can not read config file %s\n",
287 args_info.config_file_arg);
288 exit(EXIT_FAILURE);
289 }
290 if (ret)
291 cmdline_parser_configfile(args_info.config_file_arg,
292 &args_info, 0, 0, 0);
293 if ((ret = open_mixer()) < 0) {
294 PARA_EMERG_LOG("can not open mixer device %s.",
295 args_info.mixer_device_arg);
296 exit(EXIT_FAILURE);
297 } else
298 close(ret);
299 ret = 0;
300 setlinebuf(stdout);
301 if (!strcmp(args_info.mode_arg, "sleep")) {
302 sweet_dreams();
303 goto out;
304 }
305 if (!strcmp(args_info.mode_arg, "fade")) {
306 fade(args_info.fade_vol_arg, args_info.fade_time_arg);
307 goto out;
308 }
309 if (!strcmp(args_info.mode_arg, "snooze")) {
310 snooze();
311 goto out;
312 }
313 ret = -1;
314 out:
315 return ret;
316 }