Jack2
1.9.8
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00001 /* 00002 Copyright (C) 2010 Devin Anderson 00003 00004 This program is free software; you can redistribute it and/or modify 00005 it under the terms of the GNU Lesser General Public License as published by 00006 the Free Software Foundation; either version 2.1 of the License, or 00007 (at your option) any later version. 00008 00009 This program is distributed in the hope that it will be useful, 00010 but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00012 GNU Lesser General Public License for more details. 00013 00014 You should have received a copy of the GNU Lesser General Public License 00015 along with this program; if not, write to the Free Software 00016 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00017 00018 */ 00019 00020 #include "JackMidiBufferWriteQueue.h" 00021 #include "JackMidiUtil.h" 00022 00023 using Jack::JackMidiBufferWriteQueue; 00024 00025 JackMidiBufferWriteQueue::JackMidiBufferWriteQueue() 00026 { 00027 // Empty 00028 } 00029 00030 Jack::JackMidiWriteQueue::EnqueueResult 00031 JackMidiBufferWriteQueue::EnqueueEvent(jack_nframes_t time, size_t size, 00032 jack_midi_data_t *data) 00033 { 00034 if (time >= next_frame_time) { 00035 return EVENT_EARLY; 00036 } 00037 if (time < last_frame_time) { 00038 time = last_frame_time; 00039 } 00040 jack_midi_data_t *dst = buffer->ReserveEvent(time - last_frame_time, size); 00041 if (! dst) { 00042 return size > max_bytes ? BUFFER_TOO_SMALL : BUFFER_FULL; 00043 } 00044 memcpy(dst, data, size); 00045 return OK; 00046 } 00047 00048 void 00049 JackMidiBufferWriteQueue::ResetMidiBuffer(JackMidiBuffer *buffer, 00050 jack_nframes_t frames) 00051 { 00052 if (! buffer) { 00053 jack_error("JackMidiBufferWriteQueue::ResetMidiBuffer - buffer reset " 00054 "to NULL"); 00055 } else if (! buffer->IsValid()) { 00056 jack_error("JackMidiBufferWriteQueue::ResetMidiBuffer - buffer reset " 00057 "to invalid buffer"); 00058 } else { 00059 this->buffer = buffer; 00060 buffer->Reset(frames); 00061 last_frame_time = GetLastFrame(); 00062 max_bytes = buffer->MaxEventSize(); 00063 next_frame_time = last_frame_time + frames; 00064 } 00065 }