65 lines
1.8 KiB
C++
65 lines
1.8 KiB
C++
/*
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Copyright (C) 2010 Devin Anderson
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <cassert>
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#include "JackFFADOMidiSendQueue.h"
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#include "JackMidiUtil.h"
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using Jack::JackFFADOMidiSendQueue;
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JackFFADOMidiSendQueue::JackFFADOMidiSendQueue()
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{
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// Empty
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}
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Jack::JackMidiWriteQueue::EnqueueResult
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JackFFADOMidiSendQueue::EnqueueEvent(jack_nframes_t time, size_t size,
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jack_midi_data_t *buffer)
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{
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assert(size == 1);
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jack_nframes_t relative_time = (time < last_frame) ? 0 : time - last_frame;
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if (index < relative_time) {
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index = (relative_time % 8) ?
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(relative_time & (~ ((jack_nframes_t) 7))) + 8 : relative_time;
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}
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if (index >= length) {
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return BUFFER_FULL;
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}
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output_buffer[index] = 0x01000000 | ((uint32_t) *buffer);
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index += 8;
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return OK;
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}
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jack_nframes_t
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JackFFADOMidiSendQueue::GetNextScheduleFrame()
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{
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return last_frame + index;
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}
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void
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JackFFADOMidiSendQueue::ResetOutputBuffer(uint32_t *output_buffer,
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jack_nframes_t length)
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{
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index = 0;
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last_frame = GetLastFrame();
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this->length = length;
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this->output_buffer = output_buffer;
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}
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