diff options
Diffstat (limited to 'attic/muse_qt4_evolution/muse/midififo.cpp')
-rw-r--r-- | attic/muse_qt4_evolution/muse/midififo.cpp | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/attic/muse_qt4_evolution/muse/midififo.cpp b/attic/muse_qt4_evolution/muse/midififo.cpp new file mode 100644 index 00000000..f68afd83 --- /dev/null +++ b/attic/muse_qt4_evolution/muse/midififo.cpp @@ -0,0 +1,103 @@ +//============================================================================= +// MusE +// Linux Music Editor +// $Id:$ +// +// Copyright (C) 2002-2006 by Werner Schweer and others +// +// This program is free software; you can redistribute it and/or modify +// it under the terms of the GNU General Public License version 2. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU General Public License +// along with this program; if not, write to the Free Software +// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +//============================================================================= + +#include "midififo.h" + +//--------------------------------------------------------- +// put +// return true on fifo overflow +//--------------------------------------------------------- + +bool MidiFifo::put(const MidiEvent& event) + { + if (size < MIDI_FIFO_SIZE) { + fifo[wIndex] = event; + wIndex = (wIndex + 1) % MIDI_FIFO_SIZE; + // q_atomic_increment(&size); + ++size; + return false; + } + return true; + } + +//--------------------------------------------------------- +// get +//--------------------------------------------------------- + +MidiEvent MidiFifo::get() + { + MidiEvent event(fifo[rIndex]); + rIndex = (rIndex + 1) % MIDI_FIFO_SIZE; + // q_atomic_decrement(&size); + --size; + return event; + } + +//--------------------------------------------------------- +// peek +//--------------------------------------------------------- + +const MidiEvent& MidiFifo::peek(int n) + { + int idx = (rIndex + n) % MIDI_FIFO_SIZE; + return fifo[idx]; + } + +//--------------------------------------------------------- +// remove +//--------------------------------------------------------- + +void MidiFifo::remove() + { + rIndex = (rIndex + 1) % MIDI_FIFO_SIZE; + // q_atomic_decrement(&size); + --size; + } + +//--------------------------------------------------------- +// put +// return true on fifo overflow +//--------------------------------------------------------- + +bool MidiOutFifo::put(const MidiOutEvent& event) + { + if (size < MIDI_FIFO_SIZE) { + fifo[wIndex] = event; + wIndex = (wIndex + 1) % MIDI_FIFO_SIZE; + // q_atomic_increment(&size); + ++size; + return false; + } + return true; + } + +//--------------------------------------------------------- +// get +//--------------------------------------------------------- + +MidiOutEvent MidiOutFifo::get() + { + MidiOutEvent event(fifo[rIndex]); + rIndex = (rIndex + 1) % MIDI_FIFO_SIZE; + // q_atomic_decrement(&size); + --size; + return event; + } + |