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/*
Copyright (C) 2006-2009 Paul Davis
Author: David Robillard
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2 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 General Public License
for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __ardour_midi_buffer_h__
#define __ardour_midi_buffer_h__
#include "evoral/midi_util.h"
#include "midi++/event.h"
#include "ardour/buffer.h"
#include "ardour/event_type_map.h"
namespace ARDOUR {
/** Buffer containing 8-bit unsigned char (MIDI) data. */
class MidiBuffer : public Buffer
{
public:
typedef framepos_t TimeType;
MidiBuffer(size_t capacity);
~MidiBuffer();
void silence (framecnt_t nframes, framecnt_t offset = 0);
void read_from (const Buffer& src, framecnt_t nframes, framecnt_t dst_offset = 0, framecnt_t src_offset = 0);
void merge_from (const Buffer& src, framecnt_t nframes, framecnt_t dst_offset = 0, framecnt_t src_offset = 0);
void copy(const MidiBuffer& copy);
bool push_back(const Evoral::MIDIEvent<TimeType>& event);
bool push_back(const jack_midi_event_t& event);
bool push_back(TimeType time, size_t size, const uint8_t* data);
uint8_t* reserve(TimeType time, size_t size);
void resize(size_t);
bool merge(const MidiBuffer& a, const MidiBuffer& b);
bool merge_in_place(const MidiBuffer &other);
template<typename BufferType, typename EventType>
struct iterator_base {
iterator_base<BufferType, EventType>(BufferType& b, framecnt_t o) : buffer(b), offset(o) {}
inline EventType operator*() const {
uint8_t* ev_start = buffer._data + offset + sizeof(TimeType);
int event_size = Evoral::midi_event_size(ev_start);
assert(event_size >= 0);
return EventType(EventTypeMap::instance().midi_event_type(*ev_start),
*((TimeType*)(buffer._data + offset)),
event_size, ev_start);
}
inline EventType operator*() {
uint8_t* ev_start = buffer._data + offset + sizeof(TimeType);
int event_size = Evoral::midi_event_size(ev_start);
assert(event_size >= 0);
return EventType(EventTypeMap::instance().midi_event_type(*ev_start),
*((TimeType*)(buffer._data + offset)),
event_size, ev_start);
}
inline iterator_base<BufferType, EventType>& operator++() {
uint8_t* ev_start = buffer._data + offset + sizeof(TimeType);
int event_size = Evoral::midi_event_size(ev_start);
assert(event_size >= 0);
offset += sizeof(TimeType) + event_size;
return *this;
}
inline bool operator!=(const iterator_base<BufferType, EventType>& other) const {
return (&buffer != &other.buffer) || (offset != other.offset);
}
BufferType& buffer;
size_t offset;
};
typedef iterator_base< MidiBuffer, Evoral::MIDIEvent<TimeType> > iterator;
typedef iterator_base< const MidiBuffer, const Evoral::MIDIEvent<TimeType> > const_iterator;
iterator begin() { return iterator(*this, 0); }
iterator end() { return iterator(*this, _size); }
const_iterator begin() const { return const_iterator(*this, 0); }
const_iterator end() const { return const_iterator(*this, _size); }
uint8_t* data() const { return _data; }
private:
friend class iterator_base< MidiBuffer, Evoral::MIDIEvent<TimeType> >;
friend class iterator_base< const MidiBuffer, const Evoral::MIDIEvent<TimeType> >;
uint8_t* _data; ///< timestamp, event, timestamp, event, ...
};
} // namespace ARDOUR
#endif // __ardour_midi_buffer_h__
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