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libcw/cwSvgMidi.cpp

470 lines
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C++
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#include "cwCommon.h"
#include "cwLog.h"
#include "cwCommonImpl.h"
#include "cwMem.h"
#include "cwObject.h"
#include "cwTime.h"
#include "cwMidi.h"
#include "cwMidiFile.h"
#include "cwPianoScore.h"
#include "cwSvg.h"
#include "cwMidiState.h"
#include "cwSvgMidi.h"
#define PEDAL_COUNT 3
#define SUST_PEDAL_IDX 0
#define SOST_PEDAL_IDX 1
#define SOFT_PEDAL_IDX 2
#define PIX_PER_SEC 100.0
#define NOTE_HEIGHT 15.0
namespace cw
{
namespace svg_midi
{
rc_t _write_svg_rect( svg::handle_t svgH, double secs0, double secs1, double y, const char* label, unsigned color )
{
rc_t rc;
double x = secs0 * PIX_PER_SEC;
double ww = secs1 * PIX_PER_SEC - x;
double hh = NOTE_HEIGHT;
if((rc = svg::rect( svgH, x, y*NOTE_HEIGHT, ww, hh, "fill", color, "rgb" )) != kOkRC )
{
rc = cwLogError(rc,"Error creating SVG rect.");
goto errLabel;
}
if((rc = svg::text( svgH, x, y*NOTE_HEIGHT+NOTE_HEIGHT, label )) != kOkRC )
{
rc = cwLogError(rc,"Error writing SVG rect label.");
goto errLabel;
}
errLabel:
return rc;
}
rc_t _write_svg_vert_line( svg::handle_t svgH, double sec, unsigned color, unsigned minMidiPitch, unsigned maxMidiPitch )
{
rc_t rc = kOkRC;
if((rc = line(svgH, sec*PIX_PER_SEC, 0, sec*PIX_PER_SEC, (maxMidiPitch-minMidiPitch)*NOTE_HEIGHT, "stroke", color, "rgb")) != kOkRC )
{
rc = cwLogError(rc,"Error writing SVG line.");
goto errLabel;
}
errLabel:
return rc;
}
rc_t _write_svg_horz_line( svg::handle_t svgH, double sec0, double sec1, double y, unsigned color )
{
rc_t rc = kOkRC;
if((rc = line(svgH, sec0*PIX_PER_SEC, y*NOTE_HEIGHT, sec1*PIX_PER_SEC, y*NOTE_HEIGHT, "stroke", color, "rgb")) != kOkRC )
{
rc = cwLogError(rc,"Error writing SVG line.");
goto errLabel;
}
errLabel:
return rc;
}
void _write_note_rect( svg::handle_t svgH, const midi_state::event_t* e0, const midi_state::event_t* e1, unsigned minMidiPitch, unsigned maxMidiPitch )
{
cwAssert( e0!=nullptr && e1!=nullptr && e0->msg != nullptr && e1->msg !=nullptr);
const char* sciPitch = midi::midiToSciPitch( e0->msg->u.midi.d0 );
const unsigned labelCharN = 127;
char label[ labelCharN+1 ];
unsigned muid = e0->msg->u.midi.uid;
snprintf(label,labelCharN,"%s - %i",sciPitch,muid);
double y = -1.0 * (e0->msg->u.midi.d0 - minMidiPitch) + (maxMidiPitch - minMidiPitch);
_write_svg_rect( svgH, e0->secs, e1->secs, y, label, 0xafafaf );
}
void _write_sound_line( svg::handle_t svgH, const midi_state::event_t* e0, const midi_state::event_t* e1, unsigned minMidiPitch, unsigned maxMidiPitch )
{
cwAssert( e0!=nullptr && e1!=nullptr && e0->msg != nullptr && e1->msg !=nullptr);
double y = -1.0 * (e0->msg->u.midi.d0 - minMidiPitch) + (maxMidiPitch - minMidiPitch);
_write_svg_horz_line( svgH, e0->secs, e1->secs, y, 0xafafaf );
}
void _write_svg_ch_note( svg::handle_t svgH, const midi_state::event_t* e0, unsigned minMidiPitch, unsigned maxMidiPitch )
{
const midi_state::event_t* e = e0;
const midi_state::event_t* n0 = nullptr;
const midi_state::event_t* s0 = nullptr;
for(; e!=nullptr; e=e->link)
{
if( cwIsFlag(e->flags,midi_state::kNoteOffFl) )
{
if( n0 == nullptr )
{
// consecutive note off msgs
}
else
{
_write_note_rect( svgH, n0, e, minMidiPitch, maxMidiPitch );
}
n0 = nullptr;
}
if( cwIsFlag(e->flags,midi_state::kNoteOnFl) )
{
// if note on without note-off
if( n0 != nullptr )
{
// TODO: check for reattack flag
_write_note_rect( svgH, n0, e, minMidiPitch, maxMidiPitch );
}
n0 = e;
}
if( cwIsFlag(e->flags,midi_state::kSoundOnFl) )
{
if( s0 != nullptr )
{
// consecutive sound on msgs
_write_sound_line( svgH, s0, e, minMidiPitch, maxMidiPitch );
}
s0 = e;
}
if( cwIsFlag(e->flags,midi_state::kSoundOffFl) )
{
if( s0 == nullptr )
{
// consecutive off msgs
}
else
{
_write_sound_line( svgH, s0, e, minMidiPitch, maxMidiPitch );
}
s0 = nullptr;
}
}
}
/*
rc_t _write_svg_pedal( svg_midi_t* p, svg::handle_t svgH, const graphic_evt_t* ge, unsigned minMidiPitch, unsigned maxMidiPitch )
{
rc_t rc = kOkRC;
const char* label = nullptr;
unsigned pedal_id = 0;
unsigned color;
switch( ge->beg_evt->d0 & 0xf0 )
{
case midi::kSustainCtlMdId:
label = "damp";
pedal_id = 0;
color = 0xf4a460;
break;
case midi::kSostenutoCtlMdId:
label = "sost";
pedal_id = 1;
color = 0x7fffd4;
break;
case midi::kSoftPedalCtlMdId:
label = "soft";
pedal_id = 2;
color = 0x98fb98;
break;
}
double y = (maxMidiPitch - minMidiPitch) + 1 + pedal_id;
if((rc = _write_svg_rect( p, svgH, ge, y, label, color )) != kOkRC )
{
rc = cwLogError(rc,"Error writing SVG pedal rect.");
goto errLabel;
}
if((rc = _write_svg_line( p, svgH, ge->beg_evt->time, color, minMidiPitch, maxMidiPitch )) != kOkRC )
{
rc = cwLogError(rc,"Error writing SVG pedal begin line.");
goto errLabel;
}
if((rc = _write_svg_line( p, svgH, ge->end_evt->time, color, minMidiPitch, maxMidiPitch )) != kOkRC )
{
rc = cwLogError(rc,"Error writing SVG pedal end line.");
goto errLabel;
}
errLabel:
return rc;
}
*/
void _write_svg_ch_pedal( svg::handle_t svgH, const midi_state::event_t* e, unsigned pedal_idx, unsigned minMidiPitch, unsigned maxMidiPitch )
{
const midi_state::event_t* e0 = nullptr;
unsigned color = 0;
const char* label = nullptr;
switch( midi_state::pedal_index_to_midi_ctl_id(pedal_idx) )
{
case midi::kSustainCtlMdId:
label = "damp";
color = 0xf4a460;
break;
case midi::kSostenutoCtlMdId:
label = "sost";
color = 0x7fffd4;
break;
case midi::kSoftPedalCtlMdId:
label = "soft";
color = 0x98fb98;
break;
default:
assert(0);
}
for(; e!=nullptr; e=e->link)
{
if( cwIsFlag(e->flags,midi_state::kNoChangeFl) )
continue;
if( cwIsFlag(e->flags,midi_state::kDownPedalFl) )
{
if( e0 != nullptr )
{
// two consecutive pedal downd - this shouldn't be possible
}
else
{
e0 = e;
}
}
if( cwIsFlag(e->flags,midi_state::kUpPedalFl))
{
if( e0 == nullptr )
{
// two consecutive pedal up's
}
else
{
// two consecutve pedal ups - this shouldn't be possible
double y = (maxMidiPitch - minMidiPitch) + 1 + pedal_idx;
_write_svg_rect( svgH, e0->secs, e->secs, y, label, color );
e0 = nullptr;
}
}
}
}
}
}
cw::rc_t cw::svg_midi::write( const char* fname, midi_state::handle_t msH )
{
rc_t rc = kOkRC;
uint8_t minMidiPitch = midi::kMidiNoteCnt;
uint8_t maxMidiPitch = 0;
const midi_state::event_t* evt = nullptr;
double minSec = 0.0;
double maxSec = 0.0;
svg::handle_t svgH;
get_note_extents( msH, minMidiPitch, maxMidiPitch, minSec, maxSec );
// create the SVG file object
if((rc = svg::create(svgH)) != kOkRC )
{
rc = cwLogError(rc,"SVG file object create failed.");
goto errLabel;
}
// create the note graphics
for(uint8_t i=0; i<midi::kMidiChCnt; ++i)
for(uint8_t j=0; j<midi::kMidiNoteCnt; ++j)
if((evt = note_event_list(msH,i,j)) != nullptr )
_write_svg_ch_note(svgH, evt, minMidiPitch, maxMidiPitch );
// create the pedal graphics
for(uint8_t i=0; i<midi::kMidiChCnt; ++i)
for(uint8_t j=0; j<midi_state::pedal_count(msH); ++j)
if((evt = pedal_event_list(msH,i,j)) != nullptr )
_write_svg_ch_pedal(svgH, evt, j, minMidiPitch, maxMidiPitch );
// write the SVG file
if((rc = svg::write( svgH, fname, nullptr, svg::kStandAloneFl )) != kOkRC )
{
rc = cwLogError(rc,"SVG-MIDI file write failed.");
goto errLabel;
}
errLabel:
destroy(svgH);
return rc;
}
/*
cw::rc_t cw::svg_midi::load_from_piano_score( handle_t h, const char* piano_score_fname )
{
rc_t rc = kOkRC;
svg_midi_t* p = _handleToPtr(h);
score::handle_t scH;
if((rc = score::create( scH, piano_score_fname )) != kOkRC )
{
rc = cwLogError(rc,"The piano score load failed.");
goto errLabel;
}
else
{
unsigned evtN = event_count(scH);
const score::event_t* evtA = base_event(scH);
time::spec_t timestamp;
for(unsigned i=0; i<evtN; ++i)
{
const score::event_t* e = evtA + i;
time::secondsToSpec(timestamp,e->sec);
if( e->bar != 0 )
_setEvent(p, kBarTypeId, e->bar, timestamp, i, 0,0,0 );
if( e->section != 0 )
_setEvent(p, kSectionTypeId, e->section, timestamp, i, 0,0,0 );
if( e->status != 0 )
_setEvent(p, kMidiTypeId, 0, timestamp, i, 0,0,0 );
}
}
errLabel:
destroy(scH);
return rc;
}
*/
cw::rc_t cw::svg_midi::midi_to_svg_file( const char* midi_fname, const char* out_fname, const object_t* midi_state_args )
{
rc_t rc = kOkRC;
midi_state::handle_t msH;
// create the MIDI state object - with caching turned on
if((rc = midi_state::create( msH, nullptr, nullptr, true, midi_state_args )) != kOkRC )
{
rc = cwLogError(rc,"Error creating the midi_state object.");
goto errLabel;
}
// load the MIDI file
if((rc = midi_state::load_from_midi_file( msH, midi_fname)) != kOkRC )
{
rc = cwLogError(rc,"Error loading midi file into midi_state object.");
goto errLabel;
}
// write the SVG file
if((rc = write(out_fname,msH)) != kOkRC )
{
rc = cwLogError(rc,"Error write the SVG-MIDI file.");
goto errLabel;
}
errLabel:
destroy(msH);
return rc;
}
/*
cw::rc_t cw::svg_midi::piano_score_to_svg_file( const char* piano_score_fname, const char* out_fname, unsigned midiMsgCacheCnt, unsigned pedalUpMidiValue )
{
rc_t rc = kOkRC;
handle_t h;
// create the SVG-MIDI object
if((rc = create(h,midiMsgCacheCnt,pedalUpMidiValue)) != kOkRC )
{
rc = cwLogError(rc,"Error creating the SVG-MIDI object.");
goto errLabel;
}
// load the MIDI file msg events into the svg-midi cache
if((rc = load_from_piano_score(h, piano_score_fname)) != kOkRC )
{
rc = cwLogError(rc,"Error loading the piano score file.");
goto errLabel;
}
// write the SVG file
if((rc = write(h,out_fname)) != kOkRC )
{
rc = cwLogError(rc,"Error write the SVG-MIDI file.");
goto errLabel;
}
errLabel:
destroy(h);
return rc;
}
*/
cw::rc_t cw::svg_midi::test_midi_file( const object_t* cfg )
{
rc_t rc;
const char* midi_fname = nullptr;
const char* out_fname = nullptr;
const object_t* midi_state_args = nullptr;
if((rc = cfg->getv( "midi_fname", midi_fname,
"out_fname", out_fname,
"midi_state_args",midi_state_args)) != kOkRC )
{
rc = cwLogError(rc,"Error parsing svg_midi::test_midi_file() arguments.");
goto errLabel;
}
rc = midi_to_svg_file( midi_fname, out_fname, midi_state_args );
errLabel:
return rc;
}
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