diff options
author | Paul Davis <paul@linuxaudiosystems.com> | 2008-06-02 21:41:35 +0000 |
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committer | Paul Davis <paul@linuxaudiosystems.com> | 2008-06-02 21:41:35 +0000 |
commit | 449aab3c465bbbf66d221fac3d7ea559f1720357 (patch) | |
tree | 6843cc40c88250a132acac701271f1504cd2df04 /libs/midi++2/midi++/event.h | |
parent | 9c0d7d72d70082a54f823cd44c0ccda5da64bb6f (diff) |
rollback to 3428, before the mysterious removal of libs/* at 3431/3432
git-svn-id: svn://localhost/ardour2/branches/3.0@3435 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/midi++2/midi++/event.h')
-rw-r--r-- | libs/midi++2/midi++/event.h | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/libs/midi++2/midi++/event.h b/libs/midi++2/midi++/event.h new file mode 100644 index 0000000000..64f99090ad --- /dev/null +++ b/libs/midi++2/midi++/event.h @@ -0,0 +1,220 @@ +/* + Copyright (C) 2007 Paul Davis + Author: Dave 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 __libmidipp_midi_event_h__ +#define __libmidipp_midi_event_h__ + +#include <stdint.h> +#include <cstdlib> +#include <cstring> +#include <sstream> +#include <assert.h> + +#include <midi++/types.h> +#include <midi++/events.h> +#include <pbd/xml++.h> + +/** If this is not defined, all methods of MidiEvent are RT safe + * but MidiEvent will never deep copy and (depending on the scenario) + * may not be usable in STL containers, signals, etc. + */ +#define MIDI_EVENT_ALLOW_ALLOC 1 + +namespace MIDI { + + +/** Identical to jack_midi_event_t, but with double timestamp + * + * time is either a frame time (from/to Jack) or a beat time (internal + * tempo time, used in MidiModel) depending on context. + */ +struct Event { +#ifdef MIDI_EVENT_ALLOW_ALLOC + Event(double t=0, uint32_t s=0, uint8_t* b=NULL, bool owns_buffer=false); + + /** Copy \a copy. + * + * If \a owns_buffer is true, the buffer will be copied and this method + * is NOT REALTIME SAFE. Otherwise both events share a buffer and + * memory management semantics are the caller's problem. + */ + Event(const Event& copy, bool owns_buffer); + + /** + * see the MIDI XML specification: http://www.midi.org/dtds/MIDIEvents10.dtd + */ + Event(const XMLNode &event); + + ~Event(); + + inline const Event& operator=(const Event& copy) { + _time = copy._time; + if (_owns_buffer) { + if (copy._buffer) { + if (copy._size > _size) { + _buffer = (uint8_t*)::realloc(_buffer, copy._size); + } + memcpy(_buffer, copy._buffer, copy._size); + } else { + free(_buffer); + _buffer = NULL; + } + } else { + _buffer = copy._buffer; + } + + _size = copy._size; + return *this; + } + + inline void shallow_copy(const Event& copy) { + if (_owns_buffer) { + free(_buffer); + _buffer = false; + _owns_buffer = false; + } + + _time = copy._time; + _size = copy._size; + _buffer = copy._buffer; + } + + inline void set(uint8_t* buf, size_t size, double t) { + if (_owns_buffer) { + if (_size < size) { + _buffer = (uint8_t*) ::realloc(_buffer, size); + } + memcpy (_buffer, buf, size); + } else { + _buffer = buf; + } + + _size = size; + _time = t; + } + + inline bool operator==(const Event& other) const { + if (_time != other._time) + return false; + + if (_size != other._size) + return false; + + if (_buffer == other._buffer) + return true; + + for (size_t i=0; i < _size; ++i) + if (_buffer[i] != other._buffer[i]) + return false; + + return true; + } + + inline bool operator!=(const Event& other) const { return ! operator==(other); } + + inline bool owns_buffer() const { return _owns_buffer; } + + inline void set_buffer(size_t size, uint8_t* buf, bool own) { + if (_owns_buffer) { + free(_buffer); + _buffer = NULL; + } + _size = size; + _buffer = buf; + _owns_buffer = own; + } + + inline void realloc(size_t size) { + if (_owns_buffer) { + if (size > _size) + _buffer = (uint8_t*) ::realloc(_buffer, size); + } else { + _buffer = (uint8_t*) ::malloc(size); + _owns_buffer = true; + } + + _size = size; + } + + +#else + + inline void set_buffer(uint8_t* buf) { _buffer = buf; } + +#endif // MIDI_EVENT_ALLOW_ALLOC + + inline double time() const { return _time; } + inline double& time() { return _time; } + inline uint32_t size() const { return _size; } + inline uint32_t& size() { return _size; } + inline uint8_t type() const { return (_buffer[0] & 0xF0); } + inline void set_type(uint8_t type) { _buffer[0] = (0x0F & _buffer[0]) | (0xF0 & type); } + inline uint8_t channel() const { return (_buffer[0] & 0x0F); } + inline void set_channel(uint8_t channel) { _buffer[0] = (0xF0 & _buffer[0]) | (0x0F & channel); } + inline bool is_note_on() const { return (type() == MIDI_CMD_NOTE_ON); } + inline bool is_note_off() const { return (type() == MIDI_CMD_NOTE_OFF); } + inline bool is_cc() const { return (type() == MIDI_CMD_CONTROL); } + inline bool is_pitch_bender() const { return (type() == MIDI_CMD_BENDER); } + inline bool is_pgm_change() const { return (type() == MIDI_CMD_PGM_CHANGE); } + inline bool is_note() const { return (is_note_on() || is_note_off()); } + inline bool is_aftertouch() const { return (type() == MIDI_CMD_NOTE_PRESSURE); } + inline bool is_channel_aftertouch() const { return (type() == MIDI_CMD_CHANNEL_PRESSURE); } + inline uint8_t note() const { return (_buffer[1]); } + inline uint8_t velocity() const { return (_buffer[2]); } + inline uint8_t cc_number() const { return (_buffer[1]); } + inline uint8_t cc_value() const { return (_buffer[2]); } + inline uint8_t pitch_bender_lsb() const { return (_buffer[1]); } + inline uint8_t pitch_bender_msb() const { return (_buffer[2]); } + inline uint16_t pitch_bender_value() const { return (((0x7F & _buffer[2]) << 7) | (0x7F & _buffer[1])); } + inline uint8_t pgm_number() const { return (_buffer[1]); } + inline void set_pgm_number(uint8_t number){ _buffer[1] = number; } + inline uint8_t aftertouch() const { return (_buffer[1]); } + inline uint8_t channel_aftertouch() const { return (_buffer[1]); } + // midi channel events range from 0x80 to 0xE0 + inline bool is_channel_event() const { return (0x80 <= type()) && (type() <= 0xE0); } + inline bool is_smf_meta_event() const { return _buffer[0] == 0xFF; } + inline bool is_sysex() const { return _buffer[0] == 0xF0 || _buffer[0] == 0xF7; } + inline const uint8_t* buffer() const { return _buffer; } + inline uint8_t*& buffer() { return _buffer; } + + /** + * mainly used for debugging purposes + */ + std::string to_string() const; + + /** + * see the MIDI XML specification: http://www.midi.org/dtds/MIDIEvents10.dtd + */ + boost::shared_ptr<XMLNode> to_xml() const; + +private: + double _time; /**< Sample index (or beat time) at which event is valid */ + uint32_t _size; /**< Number of uint8_ts of data in \a buffer */ + uint8_t* _buffer; /**< Raw MIDI data */ + +#ifdef MIDI_EVENT_ALLOW_ALLOC + bool _owns_buffer; /**< Whether buffer is locally allocated */ +#endif +}; + + +} + +#endif /* __libmidipp_midi_event_h__ */ |