midiport.h

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00001 /*
00002     Copyright (C) 2004 Ian Esten
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 
00021 #ifndef __JACK_MIDIPORT_H
00022 #define __JACK_MIDIPORT_H
00023 
00024 #ifdef __cplusplus
00025 extern "C" {
00026 #endif
00027         
00028 #include <jack/types.h>
00029 #include <stdlib.h>
00030 
00031         
00033 typedef unsigned char jack_midi_data_t;
00034 
00035 
00037 typedef struct _jack_midi_event
00038 {
00039         jack_nframes_t    time;   
00040         size_t            size;   
00041         jack_midi_data_t *buffer; 
00042 } jack_midi_event_t;
00043 
00044 
00045 /* Get number of events in a port buffer.
00046  *
00047  * @param port_buffer Port buffer from which to retrieve event.
00048  * @param nframes Number of valid frames this cycle.
00049  * @return number of events inside @a port_buffer
00050  */
00051 jack_nframes_t
00052 jack_midi_get_event_count(void*          port_buffer,
00053                         jack_nframes_t nframes);
00054 
00055 
00068 int
00069 jack_midi_event_get(jack_midi_event_t *event,
00070                     void              *port_buffer,
00071                     jack_nframes_t     event_index,
00072                     jack_nframes_t     nframes);
00073 
00074 
00084 void
00085 jack_midi_clear_buffer(void           *port_buffer,
00086                        jack_nframes_t  nframes);
00087 
00088 
00097 size_t
00098 jack_midi_max_event_size(void* port_buffer, jack_nframes_t nframes);
00099 
00100 
00117 jack_midi_data_t*
00118 jack_midi_event_reserve(void           *port_buffer,
00119                         jack_nframes_t  time, 
00120                         size_t          data_size,
00121                         jack_nframes_t  nframes);
00122 
00123 
00137 int
00138 jack_midi_event_write(void                   *port_buffer,
00139                       jack_nframes_t          time,
00140                       const jack_midi_data_t *data,
00141                       size_t                  data_size,
00142                       jack_nframes_t          nframes);
00143 
00144 
00154 jack_nframes_t
00155 jack_midi_get_lost_event_count(void           *port_buffer,
00156                                jack_nframes_t  nframes);
00157 
00158 
00159 #ifdef __cplusplus
00160 }
00161 #endif
00162 
00163 
00164 #endif /* __JACK_MIDIPORT_H */
00165 
00166 

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