Simplify init function, add defaults for latency offset and buffer size. Remove redundant timer stuff from audio_dummy.c.

audio_dummy.c

@@ -32,7 +32,7 @@
 int Fs;
 long long starttime, samples_played;
 
-static int init(int argc, char **argv, config_t *cfgp) {
+static int init(int argc, char **argv) {
     return 0;
 }
 
@@ -43,28 +43,14 @@ static void start(int sample_rate) {
     Fs = sample_rate;
     starttime = 0;
     samples_played = 0;
-    printf("dummy audio output started at Fs=%d Hz\n", sample_rate);
+    debug(1,"dummy audio output started at Fs=%d Hz\n", sample_rate);
 }
 
 static void play(short buf[], int samples) {
-    struct timeval tv;
-
-    // this is all a bit expensive but it's long-term stable.
-    gettimeofday(&tv, NULL);
-
-    long long nowtime = tv.tv_usec + 1e6*tv.tv_sec;
-
-    if (!starttime)
-        starttime = nowtime;
-
-    samples_played += samples;
-
-    long long finishtime = starttime + samples_played * 1e6 / Fs;
-    usleep(finishtime - nowtime);
 }
 
 static void stop(void) {
-    printf("dummy audio stopped\n");
+    debug(1,"dummy audio stopped\n");
 }
 
 static void help(void) {