161 lines
4.5 KiB
C++
161 lines
4.5 KiB
C++
/*
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Copyright (C) 2007 Dmitry Baikov
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Original JACK MIDI implementation Copyright (C) 2004 Ian Esten
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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 "JackError.h"
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#include "JackMidiPort.h"
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#include <errno.h>
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#include <string.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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LIB_EXPORT uint32_t jack_midi_get_event_count(void* port_buffer);
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LIB_EXPORT int jack_midi_event_get(jack_midi_event_t* event,
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void* port_buffer, uint32_t event_index);
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LIB_EXPORT void jack_midi_clear_buffer(void* port_buffer);
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LIB_EXPORT void jack_midi_reset_buffer(void* port_buffer);
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LIB_EXPORT size_t jack_midi_max_event_size(void* port_buffer);
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LIB_EXPORT jack_midi_data_t* jack_midi_event_reserve(void* port_buffer,
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jack_nframes_t time, size_t data_size);
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LIB_EXPORT int jack_midi_event_write(void* port_buffer,
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jack_nframes_t time, const jack_midi_data_t* data, size_t data_size);
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LIB_EXPORT jack_nframes_t jack_midi_get_lost_event_count(void* port_buffer);
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#ifdef __cplusplus
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}
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#endif
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using namespace Jack;
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LIB_EXPORT
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uint32_t jack_midi_get_event_count(void* port_buffer)
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{
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JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
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if (!buf || !buf->IsValid()) {
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return 0;
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}
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return buf->event_count;
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}
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LIB_EXPORT
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int jack_midi_event_get(jack_midi_event_t *event, void* port_buffer, uint32_t event_index)
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{
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JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
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if (!buf || !buf->IsValid()) {
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return -EINVAL;
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}
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if (event_index >= buf->event_count) {
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return -ENOBUFS;
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}
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JackMidiEvent* ev = &buf->events[event_index];
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event->time = ev->time;
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event->size = ev->size;
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event->buffer = ev->GetData(buf);
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return 0;
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}
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LIB_EXPORT
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void jack_midi_clear_buffer(void* port_buffer)
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{
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JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
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if (buf && buf->IsValid()) {
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buf->Reset(buf->nframes);
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}
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}
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LIB_EXPORT
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void jack_midi_reset_buffer(void* port_buffer)
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{
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MidiBufferInit(port_buffer, BUFFER_SIZE_MAX, BUFFER_SIZE_MAX);
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}
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LIB_EXPORT
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size_t jack_midi_max_event_size(void* port_buffer)
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{
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JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
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if (buf && buf->IsValid()) {
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return buf->MaxEventSize();
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}
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return 0;
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}
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LIB_EXPORT
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jack_midi_data_t* jack_midi_event_reserve(void* port_buffer, jack_nframes_t time, size_t data_size)
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{
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JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
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if (! buf) {
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jack_error("jack_midi_event_reserve: port buffer is set to NULL");
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return 0;
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}
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if (! buf->IsValid()) {
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jack_error("jack_midi_event_reserve: port buffer is invalid");
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return 0;
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}
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if (time >= buf->nframes) {
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jack_error("jack_midi_event_reserve: time parameter is out of range "
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"(%lu >= %lu)", time, buf->nframes);
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return 0;
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}
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if (buf->event_count && (buf->events[buf->event_count - 1].time > time)) {
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jack_error("jack_midi_event_reserve: time parameter is earlier than "
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"last reserved event");
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return 0;
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}
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return buf->ReserveEvent(time, data_size);
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}
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LIB_EXPORT
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int jack_midi_event_write(void* port_buffer,
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jack_nframes_t time, const jack_midi_data_t* data, size_t data_size)
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{
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JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
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if (!buf || !buf->IsValid()) {
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return -EINVAL;
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}
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if (time >= buf->nframes || (buf->event_count && buf->events[buf->event_count - 1].time > time)) {
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return -EINVAL;
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}
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jack_midi_data_t* dest = buf->ReserveEvent(time, data_size);
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if (!dest) {
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return -ENOBUFS;
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}
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memcpy(dest, data, data_size);
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return 0;
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}
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LIB_EXPORT
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uint32_t jack_midi_get_lost_event_count(void* port_buffer)
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{
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JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
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if (buf && buf->IsValid()) {
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return buf->lost_events;
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}
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return 0;
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}
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