/*
- Copyright (C) 2006 Paul Davis
- Author: Dave Robillard
-
+ 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 <midi++/event.h>
-#include <ardour/buffer.h>
+#include "evoral/EventSink.hpp"
+#include "evoral/midi_util.h"
+#include "evoral/types.hpp"
+
+#include "midi++/event.h"
+
+#include "ardour/buffer.h"
+#include "ardour/parameter_types.h"
namespace ARDOUR {
/** Buffer containing 8-bit unsigned char (MIDI) data. */
-class MidiBuffer : public Buffer
+class LIBARDOUR_API MidiBuffer : public Buffer, public Evoral::EventSink<samplepos_t>
{
public:
+ typedef samplepos_t TimeType;
+
MidiBuffer(size_t capacity);
~MidiBuffer();
- void silence(nframes_t dur, nframes_t offset=0);
-
- void read_from(const Buffer& src, nframes_t nframes, nframes_t offset);
-
+ void silence (samplecnt_t nframes, samplecnt_t offset = 0);
+ void read_from (const Buffer& src, samplecnt_t nframes, sampleoffset_t dst_offset = 0, sampleoffset_t src_offset = 0);
+ void merge_from (const Buffer& src, samplecnt_t nframes, sampleoffset_t dst_offset = 0, sampleoffset_t src_offset = 0);
+
void copy(const MidiBuffer& copy);
+ void copy(MidiBuffer const * const);
- bool push_back(const MIDI::Event& event);
- bool push_back(const jack_midi_event_t& event);
- Byte* reserve(double time, size_t size);
+ void skip_to (TimeType when);
- void resize(size_t);
+ bool push_back(const Evoral::Event<TimeType>& event);
+ bool push_back(TimeType time, size_t size, const uint8_t* data);
- bool merge(const MidiBuffer& a, const MidiBuffer& b);
-
- struct iterator {
- iterator(MidiBuffer& b, size_t i) : buffer(b), index(i) {}
-
- inline MIDI::Event& operator*() const { return buffer[index]; }
- inline iterator& operator++() { ++index; return *this; } // prefix
- inline bool operator!=(const iterator& other) const { return index != other.index; }
-
- MidiBuffer& buffer;
- size_t index;
- };
-
- struct const_iterator {
- const_iterator(const MidiBuffer& b, size_t i) : buffer(b), index(i) {}
-
- inline const MIDI::Event& operator*() const { return buffer[index]; }
- inline const_iterator& operator++() { ++index; return *this; } // prefix
- inline bool operator!=(const const_iterator& other) const { return index != other.index; }
-
- const MidiBuffer& buffer;
- size_t index;
+ uint8_t* reserve(TimeType time, size_t size);
+
+ void resize(size_t);
+ size_t size() const { return _size; }
+ bool empty() const { return _size == 0; }
+
+ bool insert_event(const Evoral::Event<TimeType>& event);
+ bool merge_in_place(const MidiBuffer &other);
+
+ /** EventSink interface for non-RT use (export, bounce). */
+ uint32_t write(TimeType time, Evoral::EventType type, uint32_t size, const uint8_t* buf);
+
+ template<typename BufferType, typename EventType>
+ class iterator_base
+ {
+ public:
+ iterator_base<BufferType, EventType>(BufferType& b, samplecnt_t o)
+ : buffer(&b), offset(o) {}
+
+ iterator_base<BufferType, EventType>(const iterator_base<BufferType,EventType>& o)
+ : buffer (o.buffer), offset(o.offset) {}
+
+ inline iterator_base<BufferType,EventType> operator= (const iterator_base<BufferType,EventType>& o) {
+ if (&o != this) {
+ buffer = o.buffer;
+ offset = o.offset;
+ }
+ return *this;
+ }
+
+ 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(midi_parameter_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(Evoral::MIDI_EVENT,
+ *(reinterpret_cast<TimeType*>((uintptr_t)(buffer->_data + offset))),
+ event_size, ev_start);
+ }
+
+ inline TimeType * timeptr() {
+ return reinterpret_cast<TimeType*>((uintptr_t)(buffer->_data + offset));
+ }
+
+ 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);
+ }
+
+ 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::Event<TimeType> > iterator;
+ typedef iterator_base< const MidiBuffer, const Evoral::Event<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); }
-private:
-
- friend class iterator;
- friend class const_iterator;
-
- const MIDI::Event& operator[](size_t i) const { assert(i < _size); return _events[i]; }
- MIDI::Event& operator[](size_t i) { assert(i < _size); return _events[i]; }
-
- // FIXME: Eliminate this
- static const size_t MAX_EVENT_SIZE = 4; // bytes
-
- /* We use _size as "number of events", so the size of _data is
- * (_size * MAX_EVENT_SIZE)
+ iterator erase(const iterator& i) {
+ assert (i.buffer == this);
+ uint8_t* ev_start = _data + i.offset + sizeof (TimeType);
+ int event_size = Evoral::midi_event_size (ev_start);
+
+ if (event_size < 0) {
+ /* unknown size, sysex: return end() */
+ return end();
+ }
+
+ size_t total_data_deleted = sizeof(TimeType) + event_size;
+
+ if (i.offset + total_data_deleted > _size) {
+ _size = 0;
+ return end();
+ }
+
+ /* we need to avoid the temporary malloc that memmove would do,
+ so copy by hand. remember: this is small amounts of data ...
+ */
+ size_t a, b;
+ for (a = i.offset, b = i.offset + total_data_deleted; b < _size; ++b, ++a) {
+ _data[a] = _data[b];
+ }
+
+ _size -= total_data_deleted;
+
+ /* all subsequent iterators are now invalid, and the one we
+ * return should refer to the event we copied, which was after
+ * the one we just erased.
+ */
+
+ return iterator (*this, i.offset);
+ }
+
+ /**
+ * returns true if the message with the second argument as its MIDI
+ * status byte should preceed the message with the first argument as
+ * its MIDI status byte.
*/
+ static bool second_simultaneous_midi_byte_is_first (uint8_t, uint8_t);
- /* FIXME: this is utter crap. rewrite as a flat/packed buffer like MidiRingBuffer */
+private:
+ friend class iterator_base< MidiBuffer, Evoral::Event<TimeType> >;
+ friend class iterator_base< const MidiBuffer, const Evoral::Event<TimeType> >;
- MIDI::Event* _events; ///< Event structs that point to offsets in _data
- Byte* _data; ///< MIDI, straight up. No time stamps.
+ uint8_t* _data; ///< timestamp, event, timestamp, event, ...
+ pframes_t _size;
};
-
} // namespace ARDOUR
#endif // __ardour_midi_buffer_h__
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