X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fevoral%2Fsrc%2FSMF.cpp;h=b84507818c306a752089976e42695ff08c873707;hb=202788ea18ddff1754da0b77d1d77ca6ef6fbca1;hp=7e5e5935ce52c4eb581ac69cef909117a7f7d17b;hpb=f8d171d297cebc92e844502ad43713b1076017c9;p=ardour.git

diff --git a/libs/evoral/src/SMF.cpp b/libs/evoral/src/SMF.cpp
index 7e5e5935ce..b84507818c 100644
--- a/libs/evoral/src/SMF.cpp
+++ b/libs/evoral/src/SMF.cpp
@@ -1,54 +1,53 @@
 /* This file is part of Evoral.
- * Copyright (C) 2008 Dave Robillard <http://drobilla.net>
+ * Copyright (C) 2008 David Robillard <http://drobilla.net>
  * Copyright (C) 2000-2008 Paul Davis
  * Author: Hans Baier
- * 
+ *
  * Evoral 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.
- * 
+ *
  * Evoral 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 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.,
  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#define __STDC_LIMIT_MACROS 1
 #include <cassert>
+#include <cmath>
 #include <iostream>
 #include <stdint.h>
+#include "libsmf/smf.h"
 #include "evoral/Event.hpp"
 #include "evoral/SMF.hpp"
-#include "libsmf/smf.h"
+#include "evoral/midi_util.h"
+#include "pbd/file_manager.h"
 
 using namespace std;
 
 namespace Evoral {
 
-template<typename Time>
-SMF<Time>::~SMF()
-{	
+SMF::~SMF()
+{
 	if (_smf) {
 		smf_delete(_smf);
 		_smf = 0;
 		_smf_track = 0;
-	} 
+	}
 }
 
-template<typename Time>
 uint16_t
-SMF<Time>::num_tracks() const
+SMF::num_tracks() const
 {
 	return _smf->number_of_tracks;
 }
 
-template<typename Time>
 uint16_t
-SMF<Time>::ppqn() const
+SMF::ppqn() const
 {
 	return _smf->ppqn;
 }
@@ -56,9 +55,8 @@ SMF<Time>::ppqn() const
 /** Seek to the specified track (1-based indexing)
  * \return 0 on success
  */
-template<typename Time>
 int
-SMF<Time>::seek_to_track(int track)
+SMF::seek_to_track(int track)
 {
 	_smf_track = smf_get_track_by_number(_smf, track);
 	if (_smf_track != NULL) {
@@ -75,26 +73,31 @@ SMF<Time>::seek_to_track(int track)
  *         -1 if the file can not be opened or created
  *         -2 if the file exists but specified track does not exist
  */
-template<typename Time>
 int
-SMF<Time>::open(const std::string& path, int track) THROW_FILE_ERROR
+SMF::open(const std::string& path, int track) THROW_FILE_ERROR
 {
 	assert(track >= 1);
-	if (_smf) { 
+	if (_smf) {
 		smf_delete(_smf);
 	}
-	
-	_path = path;
-	_smf = smf_load(_path.c_str());
-	if (_smf == NULL) {
+
+	_file_path = path;
+
+	PBD::StdioFileDescriptor d (_file_path, "r");
+	FILE* f = d.allocate ();
+	if (f == 0) {
 		return -1;
 	}
 
-	_smf_track = smf_get_track_by_number(_smf, track);
-	if (!_smf_track)
+	if ((_smf = smf_load (f)) == 0) {
+		return -1;
+	}
+
+	if ((_smf_track = smf_get_track_by_number(_smf, track)) == 0) {
 		return -2;
+	}
 
-	cerr << "Track " << track << " # events: " << _smf_track->number_of_events << endl;
+	//cerr << "Track " << track << " # events: " << _smf_track->number_of_events << endl;
 	if (_smf_track->number_of_events == 0) {
 		_smf_track->next_event_number = 0;
 		_empty = true;
@@ -102,7 +105,7 @@ SMF<Time>::open(const std::string& path, int track) THROW_FILE_ERROR
 		_smf_track->next_event_number = 1;
 		_empty = false;
 	}
-	
+
 	return 0;
 }
 
@@ -113,26 +116,26 @@ SMF<Time>::open(const std::string& path, int track) THROW_FILE_ERROR
  *         -1 if the file can not be created
  *         -2 if the track can not be created
  */
-template<typename Time>
 int
-SMF<Time>::create(const std::string& path, int track, uint16_t ppqn) THROW_FILE_ERROR
+SMF::create(const std::string& path, int track, uint16_t ppqn) THROW_FILE_ERROR
 {
 	assert(track >= 1);
-	if (_smf) { 
+	if (_smf) {
 		smf_delete(_smf);
 	}
-	
-	_path = path;
+
+	_file_path = path;
 
 	_smf = smf_new();
-	if (smf_set_ppqn(_smf, ppqn) != 0) {
-		throw FileError();
-	}
-	
+
 	if (_smf == NULL) {
 		return -1;
 	}
-	
+
+	if (smf_set_ppqn(_smf, ppqn) != 0) {
+		return -1;
+	}
+
 	for (int i = 0; i < track; ++i) {
 		_smf_track = smf_track_new();
 		assert(_smf_track);
@@ -144,28 +147,38 @@ SMF<Time>::create(const std::string& path, int track, uint16_t ppqn) THROW_FILE_
 		return -2;
 
 	_smf_track->next_event_number = 0;
+
+	{
+		/* put a stub file on disk */
+
+		PBD::StdioFileDescriptor d (_file_path, "w+");
+		FILE* f = d.allocate ();
+		if (f == 0) {
+			return -1;
+		}
+
+		if (smf_save (_smf, f)) {
+			return -1;
+		}
+	}
+
 	_empty = true;
-	
+
 	return 0;
 }
 
-template<typename Time>
 void
-SMF<Time>::close() THROW_FILE_ERROR
+SMF::close() THROW_FILE_ERROR
 {
 	if (_smf) {
-		if (smf_save(_smf, _path.c_str()) != 0) {
-			throw FileError();
-		}
 		smf_delete(_smf);
 		_smf = 0;
 		_smf_track = 0;
 	}
 }
 
-template<typename Time>
 void
-SMF<Time>::seek_to_start() const
+SMF::seek_to_start() const
 {
 	_smf_track->next_event_number = 1;
 }
@@ -181,94 +194,186 @@ SMF<Time>::seek_to_start() const
  * \a size must be the capacity of \a buf.  If it is not large enough, \a buf will
  * be reallocated and *size will be set to the new size of buf.
  *
+ * if the event is a meta-event and is an Evoral Note ID, then \a note_id will be set
+ * to the value of the NoteID; otherwise, meta-events will set \a note_id to -1.
+ *
  * \return event length (including status byte) on success, 0 if event was
- * skipped (e.g. a meta event), or -1 on EOF (or end of track).
+ * a meta event, or -1 on EOF (or end of track).
  */
-template<typename Time>
 int
-SMF<Time>::read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf) const
+SMF::read_event(uint32_t* delta_t, uint32_t* size, uint8_t** buf, event_id_t* note_id) const
 {
 	smf_event_t* event;
-	
+
 	assert(delta_t);
 	assert(size);
 	assert(buf);
-	
-    if ((event = smf_track_get_next_event(_smf_track)) != NULL) {
-    	if (smf_event_is_metadata(event)) {
-    		return 0;
-    	}
-    	*delta_t = event->delta_time_pulses;
-    	
-    	int event_size = event->midi_buffer_length;
-    	assert(event_size > 0);
-    		
-    	// Make sure we have enough scratch buffer
-    	if (*size < (unsigned)event_size) {
-    		*buf = (uint8_t*)realloc(*buf, event_size);
-    	}
-    	memcpy(*buf, event->midi_buffer, size_t(event_size));
-    	*size = event_size;
-	
-		/*printf("SMF::read_event:\n");
-		for (size_t i=0; i < *size; ++i) {
-			printf("%X ", (*buf)[i]);
-		} printf("\n");*/
-    	
-    	return event_size;
-    } else {
-    	return -1;
-    }
+	assert(note_id);
+
+	if ((event = smf_track_get_next_event(_smf_track)) != NULL) {
+
+		*delta_t = event->delta_time_pulses;
+
+		if (smf_event_is_metadata(event)) {
+			*note_id = -1; // "no note id in this meta-event */
+
+			if (event->midi_buffer[1] == 0x7f) { // Sequencer-specific
+
+				uint32_t evsize;
+				uint32_t lenlen;
+
+				if (smf_extract_vlq (&event->midi_buffer[2], event->midi_buffer_length-2, &evsize, &lenlen) == 0) {
+
+					if (event->midi_buffer[2+lenlen] == 0x99 &&  // Evoral
+					    event->midi_buffer[3+lenlen] == 0x1) { // Evoral Note ID
+
+						uint32_t id;
+						uint32_t idlen;
+
+						if (smf_extract_vlq (&event->midi_buffer[4+lenlen], event->midi_buffer_length-(4+lenlen), &id, &idlen) == 0) {
+							*note_id = id;
+						}
+					}
+				}
+			}
+			return 0; /* this is a meta-event */
+		}
+
+		int event_size = event->midi_buffer_length;
+		assert(event_size > 0);
+
+		// Make sure we have enough scratch buffer
+		if (*size < (unsigned)event_size) {
+			*buf = (uint8_t*)realloc(*buf, event_size);
+		}
+		memcpy(*buf, event->midi_buffer, size_t(event_size));
+		*size = event_size;
+
+		assert(midi_event_is_valid(*buf, *size));
+
+		/* printf("SMF::read_event @ %u: ", *delta_t);
+		   for (size_t i = 0; i < *size; ++i) {
+		   printf("%X ", (*buf)[i]);
+		   } printf("\n") */
+
+		return event_size;
+	} else {
+		return -1;
+	}
 }
 
-template<typename Time>
 void
-SMF<Time>::append_event_delta(uint32_t delta_t, const Event<Time>& ev)
+SMF::append_event_delta(uint32_t delta_t, uint32_t size, const uint8_t* buf, event_id_t note_id)
 {
-	assert(ev.size() > 0);
-	
-	/*printf("SMF::append_event_delta:\n");
-	for (size_t i=0; i < ev.size(); ++i) {
-		printf("%X ", ev.buffer()[i]);
-	} printf("\n");*/
+	if (size == 0) {
+		return;
+	}
+
+	/* printf("SMF::append_event_delta @ %u:", delta_t);
+	   for (size_t i = 0; i < size; ++i) {
+	   printf("%X ", buf[i]);
+	   } printf("\n"); */
+
+	if (!midi_event_is_valid(buf, size)) {
+		cerr << "WARNING: SMF ignoring illegal MIDI event" << endl;
+		return;
+	}
 
 	smf_event_t* event;
 
-	event = smf_event_new_from_pointer((void *) ev.buffer(), int(ev.size()));
+	/* XXX july 2010: currently only store event ID's for notes, program changes and bank changes
+	 */
+
+	uint8_t const c = buf[0] & 0xf0;
+	bool const store_id = (
+		c == MIDI_CMD_NOTE_ON ||
+		c == MIDI_CMD_NOTE_OFF ||
+		c == MIDI_CMD_PGM_CHANGE ||
+		(c == MIDI_CMD_CONTROL && (buf[1] == MIDI_CTL_MSB_BANK || buf[1] == MIDI_CTL_LSB_BANK))
+	                       );
+
+	if (store_id && note_id >= 0) {
+		int idlen;
+		int lenlen;
+		uint8_t idbuf[16];
+		uint8_t lenbuf[16];
+
+		event = smf_event_new ();
+		assert(event != NULL);
+
+		/* generate VLQ representation of note ID */
+		idlen = smf_format_vlq (idbuf, sizeof(idbuf), note_id);
+
+		/* generate VLQ representation of meta event length,
+		   which is the idlen + 2 bytes (Evoral type ID plus Note ID type)
+		*/
+
+		lenlen = smf_format_vlq (lenbuf, sizeof(lenbuf), idlen+2);
+
+		event->midi_buffer_length = 2 + lenlen + 2 + idlen;
+		/* this should be allocated by malloc(3) because libsmf will
+		   call free(3) on it
+		*/
+		event->midi_buffer = (uint8_t*) malloc (sizeof (uint8_t*) * event->midi_buffer_length);
+
+		event->midi_buffer[0] = 0xff; // Meta-event
+		event->midi_buffer[1] = 0x7f; // Sequencer-specific
+		memcpy (&event->midi_buffer[2], lenbuf, lenlen);
+		event->midi_buffer[2+lenlen] = 0x99; // Evoral type ID
+		event->midi_buffer[3+lenlen] = 0x1;  // Evoral type Note ID
+		memcpy (&event->midi_buffer[4+lenlen], idbuf, idlen);
+
+		assert(_smf_track);
+		smf_track_add_event_delta_pulses(_smf_track, event, 0);
+	}
+
+	event = smf_event_new_from_pointer(buf, size);
 	assert(event != NULL);
-	
-	memcpy(event->midi_buffer, ev.buffer(), ev.size());
-	
+
 	assert(_smf_track);
-	smf_track_add_event_delta_pulses(_smf_track, event, int(delta_t));
-	
-	if (ev.size() > 0) {
-		_empty = false;
-	}
+	smf_track_add_event_delta_pulses(_smf_track, event, delta_t);
+	_empty = false;
 }
 
-template<typename Time>
 void
-SMF<Time>::begin_write()
+SMF::begin_write()
 {
 	assert(_smf_track);
 	smf_track_delete(_smf_track);
-	
+
 	_smf_track = smf_track_new();
 	assert(_smf_track);
-	
+
 	smf_add_track(_smf, _smf_track);
 	assert(_smf->number_of_tracks == 1);
 }
 
-template<typename Time>
 void
-SMF<Time>::end_write() THROW_FILE_ERROR
+SMF::end_write() THROW_FILE_ERROR
 {
-	if (smf_save(_smf, _path.c_str()) != 0)
-		throw FileError();
+	PBD::StdioFileDescriptor d (_file_path, "w+");
+	FILE* f = d.allocate ();
+	if (f == 0) {
+		throw FileError (_file_path);
+	}
+
+	if (smf_save(_smf, f) != 0) {
+		throw FileError (_file_path);
+	}
 }
 
-template class SMF<double>;
+double
+SMF::round_to_file_precision (double val) const
+{
+	double div = ppqn();
+
+	return round (val * div) / div;
+}
+
+void
+SMF::set_path (const std::string& p)
+{
+	_file_path = p;
+}
 
 } // namespace Evoral