alsa-backend: drop midi during freewheel processing.
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@ -1432,7 +1432,7 @@ AlsaAudioBackend::main_process_thread ()
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}
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_pcmi->capt_done (_samples_per_period);
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/* de-queue midi*/
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/* de-queue incoming midi*/
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i = 0;
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for (std::vector<AlsaPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
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assert (_rmidi_in.size() > i);
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@ -1459,12 +1459,11 @@ AlsaAudioBackend::main_process_thread ()
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return 0;
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}
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i = 0;
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for (std::vector<AlsaPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
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for (std::vector<AlsaPort*>::iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
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static_cast<AlsaMidiPort*>(*it)->next_period();
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}
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/* queue midi */
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/* queue outgoing midi */
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i = 0;
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for (std::vector<AlsaPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it, ++i) {
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assert (_rmidi_out.size() > i);
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@ -1504,17 +1503,42 @@ AlsaAudioBackend::main_process_thread ()
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}
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} else {
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// Freewheelin'
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// zero audio input buffers
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for (std::vector<AlsaPort*>::const_iterator it = _system_inputs.begin (); it != _system_inputs.end (); ++it) {
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memset ((*it)->get_buffer (_samples_per_period), 0, _samples_per_period * sizeof (Sample));
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}
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for (std::vector<AlsaPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it) {
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clock1 = g_get_monotonic_time();
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uint32_t i = 0;
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for (std::vector<AlsaPort*>::const_iterator it = _system_midi_in.begin (); it != _system_midi_in.end (); ++it, ++i) {
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static_cast<AlsaMidiBuffer*>((*it)->get_buffer(0))->clear ();
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AlsaMidiIn *rm = _rmidi_in.at(i);
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void *bptr = (*it)->get_buffer(0);
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midi_clear(bptr); // zero midi buffer
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// TODO add an API call for this.
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pframes_t time;
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uint8_t data[64]; // match MaxAlsaEventSize in alsa_rawmidi.cc
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size_t size = sizeof(data);
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while (rm->recv_event (time, data, size)) {
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; // discard midi-data from HW.
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}
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rm->sync_time (clock1);
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}
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if (engine.process_callback (_samples_per_period)) {
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_pcmi->pcm_stop ();
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_active = false;
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return 0;
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}
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// drop all outgoing MIDI messages
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for (std::vector<AlsaPort*>::const_iterator it = _system_midi_out.begin (); it != _system_midi_out.end (); ++it) {
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void *bptr = (*it)->get_buffer(0);
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midi_clear(bptr);
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}
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_dsp_load = 1.0;
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Glib::usleep (100); // don't hog cpu
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}
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