dummy: ignore first cycle timing.

diff --git a/libs/backends/dummy/dummy_audiobackend.cc b/libs/backends/dummy/dummy_audiobackend.cc
index 4d19dca9dd46842530e4c4f05392f62f7830f3d1..a42f3dbade654dbe716d990a800aa986d79be561 100644 (file)
--- a/libs/backends/dummy/dummy_audiobackend.cc
+++ b/libs/backends/dummy/dummy_audiobackend.cc
@@ -1174,7 +1174,7 @@ DummyAudioBackend::main_process_thread ()
        manager.graph_order_callback();
 
        int64_t clock1, clock2;
-       clock1 = _x_get_monotonic_usec();
+       clock1 = -1;
        while (_running) {
 
                if (_freewheeling != _freewheel) {
@@ -1226,8 +1226,8 @@ DummyAudioBackend::main_process_thread ()
                if (!_freewheel) {
                        const int64_t nominal_time = 1e6 * _samples_per_period / _samplerate;
                        clock2 = _x_get_monotonic_usec();
-#ifdef PLATFORM_WINDOWS
-                       bool win_timers_ok = true;
+                       bool timers_ok = true;
+
                        /* querying the performance counter can fail occasionally (-1).
                         * Also on some multi-core systems, timers are CPU specific and not
                         * synchronized. We assume they differ more than a few milliseconds
@@ -1235,14 +1235,14 @@ DummyAudioBackend::main_process_thread ()
                         * execution switches cores.
                         */
                        if (clock1 < 0 || clock2 < 0 || (clock1 > clock2) || (clock2 - clock1) > 4 * nominal_time) {
-                               clock2 = clock1 = 0;
-                               win_timers_ok = false;
+                               clock1 = 0;
+                               clock2 = nominal_time;
+                               timers_ok = false;
                        }
-#endif
+
                        const int64_t elapsed_time = clock2 - clock1;
-#ifdef PLATFORM_WINDOWS
-                       if (win_timers_ok)
-#endif
+
+                       if (timers_ok)
                        { // low pass filter
                                const float load = elapsed_time / (float) nominal_time;
                                if (load > _dsp_load) {
@@ -1263,7 +1263,7 @@ DummyAudioBackend::main_process_thread ()
                        Glib::usleep (100); // don't hog cpu
                }
 
-               /* beginning of netx cycle */
+               /* beginning of next cycle */
                clock1 = _x_get_monotonic_usec();
 
                bool connections_changed = false;