- /*
- Copyright (C) 2007 Dmitry Baikov
- Original JACK MIDI implementation Copyright (C) 2004 Ian Esten
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- */
-
- #include "JackError.h"
- #include "JackMidiPort.h"
- #include <errno.h>
- #include <string.h>
-
- #ifdef __cplusplus
- extern "C"
- {
- #endif
-
- LIB_EXPORT uint32_t jack_midi_get_event_count(void* port_buffer);
-
- LIB_EXPORT int jack_midi_event_get(jack_midi_event_t* event,
- void* port_buffer, uint32_t event_index);
-
- LIB_EXPORT void jack_midi_clear_buffer(void* port_buffer);
-
- LIB_EXPORT void jack_midi_reset_buffer(void* port_buffer);
-
- LIB_EXPORT size_t jack_midi_max_event_size(void* port_buffer);
-
- LIB_EXPORT jack_midi_data_t* jack_midi_event_reserve(void* port_buffer,
- jack_nframes_t time, size_t data_size);
-
- LIB_EXPORT int jack_midi_event_write(void* port_buffer,
- jack_nframes_t time, const jack_midi_data_t* data, size_t data_size);
-
- LIB_EXPORT jack_nframes_t jack_midi_get_lost_event_count(void* port_buffer);
-
- #ifdef __cplusplus
- }
- #endif
-
- using namespace Jack;
-
- LIB_EXPORT
- uint32_t jack_midi_get_event_count(void* port_buffer)
- {
- JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
- if (!buf || !buf->IsValid()) {
- return 0;
- }
- return buf->event_count;
- }
-
- LIB_EXPORT
- int jack_midi_event_get(jack_midi_event_t *event, void* port_buffer, uint32_t event_index)
- {
- JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
- if (!buf || !buf->IsValid()) {
- return -EINVAL;
- }
- if (event_index >= buf->event_count) {
- return -ENOBUFS;
- }
- JackMidiEvent* ev = &buf->events[event_index];
- event->time = ev->time;
- event->size = ev->size;
- event->buffer = ev->GetData(buf);
- return 0;
- }
-
- LIB_EXPORT
- void jack_midi_clear_buffer(void* port_buffer)
- {
- JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
- if (buf && buf->IsValid()) {
- buf->Reset(buf->nframes);
- }
- }
-
- LIB_EXPORT
- void jack_midi_reset_buffer(void* port_buffer)
- {
- MidiBufferInit(port_buffer, BUFFER_SIZE_MAX, BUFFER_SIZE_MAX);
- }
-
- LIB_EXPORT
- size_t jack_midi_max_event_size(void* port_buffer)
- {
- JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
- if (buf && buf->IsValid()) {
- return buf->MaxEventSize();
- }
- return 0;
- }
-
- LIB_EXPORT
- jack_midi_data_t* jack_midi_event_reserve(void* port_buffer, jack_nframes_t time, size_t data_size)
- {
- JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
- if (! buf) {
- jack_error("jack_midi_event_reserve: port buffer is set to NULL");
- return 0;
- }
- if (! buf->IsValid()) {
- jack_error("jack_midi_event_reserve: port buffer is invalid");
- return 0;
- }
- if (time >= buf->nframes) {
- jack_error("jack_midi_event_reserve: time parameter is out of range "
- "(%lu >= %lu)", time, buf->nframes);
- return 0;
- }
- if (buf->event_count && (buf->events[buf->event_count - 1].time > time)) {
- jack_error("jack_midi_event_reserve: time parameter is earlier than "
- "last reserved event");
- return 0;
- }
- return buf->ReserveEvent(time, data_size);
- }
-
- LIB_EXPORT
- int jack_midi_event_write(void* port_buffer,
- jack_nframes_t time, const jack_midi_data_t* data, size_t data_size)
- {
- JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
- if (!buf || !buf->IsValid()) {
- return -EINVAL;
- }
- if (time >= buf->nframes || (buf->event_count && buf->events[buf->event_count - 1].time > time)) {
- return -EINVAL;
- }
- jack_midi_data_t* dest = buf->ReserveEvent(time, data_size);
- if (!dest) {
- return -ENOBUFS;
- }
- memcpy(dest, data, data_size);
- return 0;
- }
-
- LIB_EXPORT
- uint32_t jack_midi_get_lost_event_count(void* port_buffer)
- {
- JackMidiBuffer *buf = (JackMidiBuffer*)port_buffer;
- if (buf && buf->IsValid()) {
- return buf->lost_events;
- }
- return 0;
- }
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