* introduced dependency: libsmf-1.2
* extracted Interface from SMF: StandardMIDIFile * first implementation of StandardMIDIFile based on libsmf that passes basic test git-svn-id: svn://localhost/ardour2/branches/3.0@4529 d708f5d6-7413-0410-9779-e7cbd77b26cf
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84
libs/evoral/evoral/LibSMF.hpp
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84
libs/evoral/evoral/LibSMF.hpp
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@ -0,0 +1,84 @@
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/* This file is part of Evoral.
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* Copyright(C) 2008 Dave Robillard <http://drobilla.net>
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* Copyright(C) 2000-2008 Paul Davis
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* Author: Hans Baier
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*
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* Evoral is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or(at your option) any later
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* version.
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*
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* Evoral is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef EVORAL_LIB_SMF_HPP
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#define EVORAL_LIB_SMF_HPP
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#include "evoral/StandardMIDIFile.hpp"
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#include <smf.h>
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#include <cassert>
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namespace Evoral {
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template<typename Time> class Event;
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template<typename Time> class EventRingBuffer;
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/** Standard Midi File (Type 0)
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*/
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template<typename Time>
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class LibSMF : public StandardMIDIFile<Time> {
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public:
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LibSMF() : _last_ev_time(0), _smf(0), _smf_track(0), _empty(true) {};
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virtual ~LibSMF() {
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if (_smf) {
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smf_delete(_smf);
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_smf = 0;
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_smf_track = 0;
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}
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}
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void seek_to_start() const;
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uint16_t ppqn() const { return _ppqn; }
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bool is_empty() const { return _empty; }
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bool eof() const { assert(false); return true; }
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Time last_event_time() const { return _last_ev_time; }
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void begin_write(FrameTime start_time);
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void append_event_unlocked(uint32_t delta_t, const Event<Time>& ev);
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void end_write();
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void flush() {};
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int flush_header() { return 0; }
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int flush_footer() { return 0; }
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protected:
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int open(const std::string& path);
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void close();
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int read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const;
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private:
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static const uint16_t _ppqn = 19200;
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Time _last_ev_time; ///< last frame time written, relative to source start
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std::string _path;
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smf_t* _smf;
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smf_track_t* _smf_track;
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bool _empty; ///< true iff file contains(non-empty) events
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};
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}; /* namespace Evoral */
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#endif /* EVORAL_LIB_SMF_HPP */
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@ -19,8 +19,7 @@
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#ifndef EVORAL_SMF_HPP
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#define EVORAL_SMF_HPP
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#include <string>
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#include "evoral/types.hpp"
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#include "evoral/StandardMIDIFile.hpp"
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namespace Evoral {
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@ -31,7 +30,7 @@ template<typename Time> class EventRingBuffer;
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/** Standard Midi File (Type 0)
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*/
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template<typename Time>
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class SMF {
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class SMF : public StandardMIDIFile<Time> {
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public:
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SMF();
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virtual ~SMF();
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64
libs/evoral/evoral/StandardMIDIFile.hpp
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64
libs/evoral/evoral/StandardMIDIFile.hpp
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/* This file is part of Evoral.
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* Copyright(C) 2008 Dave Robillard <http://drobilla.net>
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* Copyright(C) 2000-2008 Paul Davis
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* Author: Hans Baier
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*
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* Evoral is free software; you can redistribute it and/or modify it under the
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* terms of the GNU General Public License as published by the Free Software
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* Foundation; either version 2 of the License, or(at your option) any later
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* version.
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*
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* Evoral is distributed in the hope that it will be useful, but WITHOUT ANY
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* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef EVORAL_STANDARD_MIDI_FILE_HPP
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#define EVORAL_STANDARD_MIDI_FILE_HPP
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#include <string>
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#include "evoral/types.hpp"
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namespace Evoral {
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template<typename Time> class Event;
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template<typename Time> class EventRingBuffer;
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/** Standard MIDI File interface
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*/
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template<typename Time>
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class StandardMIDIFile {
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public:
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virtual void seek_to_start() const = 0;
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virtual uint16_t ppqn() const = 0;
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virtual bool is_empty() const = 0;
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virtual bool eof() const = 0;
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virtual Time last_event_time() const = 0;
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virtual void begin_write(FrameTime start_time) = 0;
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virtual void append_event_unlocked(uint32_t delta_t, const Event<Time>& ev) = 0;
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virtual void end_write() = 0;
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virtual void flush() = 0;
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virtual int flush_header() = 0;
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virtual int flush_footer() = 0;
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protected:
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virtual int open(const std::string& path) = 0;
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virtual void close() = 0;
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virtual int read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const = 0;
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};
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}; /* namespace Evoral */
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#endif /* EVORAL_STANDARD_MIDI_FILE_HPP */
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160
libs/evoral/src/LibSMF.cpp
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160
libs/evoral/src/LibSMF.cpp
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#include "evoral/LibSMF.hpp"
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#include "evoral/Event.hpp"
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#include <cassert>
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#include <iostream>
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using namespace std;
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namespace Evoral {
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/** Attempt to open the SMF file for reading and writing.
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*
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* Currently SMF is always read/write.
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*
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* \return 0 on success
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* -1 if the file can not be opened
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*/
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template<typename Time>
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int
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LibSMF<Time>::open(const std::string& path)
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{
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if (_smf) {
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smf_delete(_smf);
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}
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_smf = smf_load(path.c_str());
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if (!_smf) {
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_smf = smf_new();
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smf_set_ppqn(_smf, _ppqn);
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if(_smf == NULL) {
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return -1;
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}
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}
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_smf_track = smf_get_track_by_number(_smf, 1);
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assert(_smf_track);
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cerr << "number of events: " << _smf_track->number_of_events << endl;
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_empty = !(_smf_track->number_of_events > 0);
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return 0;
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}
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template<typename Time>
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void
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LibSMF<Time>::close()
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{
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assert(false);
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if (_smf) {
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smf_save(_smf, _path.c_str());
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smf_delete(_smf);
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_smf = 0;
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_smf_track = 0;
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}
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}
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template<typename Time>
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void
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LibSMF<Time>::seek_to_start() const
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{
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smf_rewind(_smf);
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}
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/** Read an event from the current position in file.
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*
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* File position MUST be at the beginning of a delta time, or this will die very messily.
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* ev.buffer must be of size ev.size, and large enough for the event. The returned event
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* will have it's time field set to it's delta time, in SMF tempo-based ticks, using the
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* rate given by ppqn() (it is the caller's responsibility to calculate a real time).
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*
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* \a size should be the capacity of \a buf. If it is not large enough, \a buf will
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* be freed and a new buffer allocated in its place, the size of which will be placed
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* in size.
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*
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* Returns event length (including status byte) on success, 0 if event was
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* skipped (eg a meta event), or -1 on EOF (or end of track).
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*/
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template<typename Time>
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int
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LibSMF<Time>::read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const
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{
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smf_event_t *event;
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assert(delta_t);
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assert(size);
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assert(buf);
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if ((event = smf_get_next_event(_smf)) != NULL) {
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if (smf_event_is_metadata(event)) {
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return 0;
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}
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*delta_t = event->delta_time_pulses;
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int event_size = event->midi_buffer_length;
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assert(event_size > 0);
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// Make sure we have enough scratch buffer
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if (*size < (unsigned)event_size) {
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*buf = (uint8_t*)realloc(*buf, event_size);
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}
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memcpy(*buf, event->midi_buffer, size_t(event_size));
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*size = event_size;
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return event_size;
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} else {
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return -1;
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}
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}
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template<typename Time>
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void
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LibSMF<Time>::append_event_unlocked(uint32_t delta_t, const Event<Time>& ev)
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{
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assert(ev.size() > 0);
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smf_event_t *event;
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event = smf_event_new_from_pointer((void *) ev.buffer(), int(ev.size()));
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assert(event != NULL);
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memcpy(event->midi_buffer, ev.buffer(), ev.size());
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assert(_smf_track);
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smf_track_add_event_delta_pulses (_smf_track, event, int(delta_t));
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_last_ev_time = ev.time();
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if (ev.size() > 0) {
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_empty = false;
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}
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}
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template<typename Time>
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void
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LibSMF<Time>::begin_write(FrameTime start_frame)
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{
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assert(_smf_track);
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smf_track_delete(_smf_track);
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_smf_track = smf_track_new();
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assert(_smf_track);
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smf_add_track(_smf, _smf_track);
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assert(_smf->number_of_tracks == 1);
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_last_ev_time = 0;
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}
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template<typename Time>
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void
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LibSMF<Time>::end_write()
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{
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smf_save(_smf, _path.c_str());
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}
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template class LibSMF<double>;
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} // namespace Evoral
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uint8_t* buf = NULL;
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int ret;
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while ((ret = smf.read_event(&delta_t, &size, &buf)) >= 0) {
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cerr << "read smf event type " << int(buf[0]) << endl;
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ev.set(buf, size, 0.0);
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time += delta_t;
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if (ret > 0) { // didn't skip (meta) event
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cerr << "read smf event type " << hex << int(buf[0]) << endl;
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// make ev.time absolute time in frames
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ev.time() = time * frames_per_beat / (double)smf.ppqn();
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ev.set_event_type(type_map->midi_event_type(buf[0]));
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#include <cppunit/TestFixture.h>
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#include <cppunit/extensions/HelperMacros.h>
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#include <evoral/SMF.hpp>
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#include <evoral/LibSMF.hpp>
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#include "SequenceTest.hpp"
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using namespace Evoral;
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template<typename Time>
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class TestSMF : public SMF<Time> {
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class TestSMF : public LibSMF<Time> {
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public:
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int open(const std::string& path) {
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return SMF<Time>::open(path);
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return LibSMF<Time>::open(path);
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}
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int read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const {
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return SMF<Time>::read_event(delta_t, size, buf);
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return LibSMF<Time>::read_event(delta_t, size, buf);
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}
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};
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@ -29,6 +29,7 @@ def configure(conf):
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autowaf.check_pkg(conf, 'glibmm-2.4', uselib_store='GLIBMM', atleast_version='2.14.0', mandatory=True)
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autowaf.check_pkg(conf, 'gthread-2.0', uselib_store='GTHREAD', atleast_version='2.14.0', mandatory=True)
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autowaf.check_pkg(conf, 'cppunit', uselib_store='CPPUNIT', atleast_version='1.12.0', mandatory=False)
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autowaf.check_pkg(conf, 'smf', uselib_store='SMF', atleast_version='1.2', mandatory=False)
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def build(bld):
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# Headers
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@ -50,13 +51,14 @@ def build(bld):
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src/Note.cpp
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src/SMF.cpp
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src/SMFReader.cpp
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src/LibSMF.cpp
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src/Sequence.cpp
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'''
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obj.export_incdirs = ['.']
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obj.includes = ['.', './src']
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obj.name = 'libevoral'
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obj.target = 'evoral'
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obj.uselib = 'GLIBMM GTHREAD'
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obj.uselib = 'GLIBMM GTHREAD SMF'
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obj.vnum = EVORAL_LIB_VERSION
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obj.install_path = ''
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