Jack2
1.9.10
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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 #include "JackError.h" 00023 00024 using Jack::JackMidiBufferWriteQueue; 00025 00026 JackMidiBufferWriteQueue::JackMidiBufferWriteQueue() 00027 { 00028 // Empty 00029 } 00030 00031 Jack::JackMidiWriteQueue::EnqueueResult 00032 JackMidiBufferWriteQueue::EnqueueEvent(jack_nframes_t time, size_t size, 00033 jack_midi_data_t *data) 00034 { 00035 if (time >= next_frame_time) { 00036 return EVENT_EARLY; 00037 } 00038 if (time < last_frame_time) { 00039 time = last_frame_time; 00040 } 00041 jack_midi_data_t *dst = buffer->ReserveEvent(time - last_frame_time, size); 00042 if (! dst) { 00043 return size > max_bytes ? BUFFER_TOO_SMALL : BUFFER_FULL; 00044 } 00045 memcpy(dst, data, size); 00046 return OK; 00047 } 00048 00049 void 00050 JackMidiBufferWriteQueue::ResetMidiBuffer(JackMidiBuffer *buffer, 00051 jack_nframes_t frames) 00052 { 00053 if (! buffer) { 00054 jack_error("JackMidiBufferWriteQueue::ResetMidiBuffer - buffer reset " 00055 "to NULL"); 00056 } else if (! buffer->IsValid()) { 00057 jack_error("JackMidiBufferWriteQueue::ResetMidiBuffer - buffer reset " 00058 "to invalid buffer"); 00059 } else { 00060 this->buffer = buffer; 00061 buffer->Reset(frames); 00062 last_frame_time = GetLastFrame(); 00063 max_bytes = buffer->MaxEventSize(); 00064 next_frame_time = last_frame_time + frames; 00065 } 00066 }