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				https://gitlab.freedesktop.org/pipewire/pipewire.git
				synced 2025-11-03 09:01:54 -05:00 
			
		
		
		
	midifile: add support for event dump
Make a method to dump event info to stdout.
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					 2 changed files with 246 additions and 0 deletions
				
			
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					@ -27,6 +27,7 @@
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#include <sys/stat.h>
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					#include <sys/stat.h>
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#include <unistd.h>
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					#include <unistd.h>
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#include <fcntl.h>
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					#include <fcntl.h>
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					#include <math.h>
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#include "midifile.h"
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					#include "midifile.h"
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					@ -450,3 +451,246 @@ int midi_file_write_event(struct midi_file *mf, const struct midi_event *event)
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	return 0;
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						return 0;
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}
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					}
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					static const char *event_names[] = {
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						"Text", "Copyright", "Sequence/Track Name",
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						"Instrument", "Lyric", "Marker", "Cue Point",
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						"Program Name", "Device (Port) Name"
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					};
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					static const char *note_names[] = {
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						"C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"
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					};
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					static const char *controller_names[128] = {
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						[0] =	"Bank Select (coarse)",
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						[1] =	"Modulation Wheel (coarse)",
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						[2] =	"Breath controller (coarse)",
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						[4] =	"Foot Pedal (coarse)",
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						[5] =	"Portamento Time (coarse)",
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						[6] =	"Data Entry (coarse)",
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						[7] =	"Volume (coarse)",
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						[8] =	"Balance (coarse)",
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						[10] =	"Pan position (coarse)",
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						[11] =	"Expression (coarse)",
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						[12] =	"Effect Control 1 (coarse)",
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						[13] =	"Effect Control 2 (coarse)",
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						[16] =	"General Purpose Slider 1",
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						[17] =	"General Purpose Slider 2",
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						[18] =	"General Purpose Slider 3",
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						[19] =	"General Purpose Slider 4",
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						[32] =	"Bank Select (fine)",
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						[33] =	"Modulation Wheel (fine)",
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						[34] =	"Breath 	 (fine)",
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						[36] =	"Foot Pedal (fine)",
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						[37] =	"Portamento Time (fine)",
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						[38] =	"Data Entry (fine)",
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						[39] =	"Volume (fine)",
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						[40] =	"Balance (fine)",
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						[42] =	"Pan position (fine)",
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						[43] =	"Expression (fine)",
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						[44] =	"Effect Control 1 (fine)",
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						[45] =	"Effect Control 2 (fine)",
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						[64] =	"Hold Pedal (on/off)",
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						[65] =	"Portamento (on/off)",
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						[66] =	"Sustenuto Pedal (on/off)",
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						[67] =	"Soft Pedal (on/off)",
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						[68] =	"Legato Pedal (on/off)",
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						[69] =	"Hold 2 Pedal (on/off)",
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						[70] =	"Sound Variation",
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						[71] =	"Sound Timbre",
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						[72] =	"Sound Release Time",
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						[73] =	"Sound Attack Time",
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						[74] =	"Sound Brightness",
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						[75] =	"Sound Control 6",
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						[76] =	"Sound Control 7",
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						[77] =	"Sound Control 8",
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						[78] =	"Sound Control 9",
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						[79] =	"Sound Control 10",
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						[80] =	"General Purpose Button 1 (on/off)",
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						[81] =	"General Purpose Button 2 (on/off)",
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						[82] =	"General Purpose Button 3 (on/off)",
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						[83] =	"General Purpose Button 4 (on/off)",
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						[91] =	"Effects Level",
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						[92] =	"Tremulo Level",
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						[93] =	"Chorus Level",
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						[94] =	"Celeste Level",
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						[95] =	"Phaser Level",
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						[96] =	"Data Button increment",
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						[97] =	"Data Button decrement",
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						[98] =	"Non-registered Parameter (fine)",
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						[99] =	"Non-registered Parameter (coarse)",
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						[100] =	"Registered Parameter (fine)",
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						[101] =	"Registered Parameter (coarse)",
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						[120] =	"All Sound Off",
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						[121] =	"All Controllers Off",
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						[122] =	"Local Keyboard (on/off)",
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						[123] =	"All Notes Off",
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						[124] =	"Omni Mode Off",
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						[125] =	"Omni Mode On",
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						[126] =	"Mono Operation",
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						[127] =	"Poly Operation",
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					};
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					static const char *program_names[] = {
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						"Acoustic Grand", "Bright Acoustic", "Electric Grand", "Honky-Tonk",
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						"Electric Piano 1", "Electric Piano 2", "Harpsichord", "Clavinet",
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						"Celesta", "Glockenspiel", "Music Box", "Vibraphone", "Marimba",
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						"Xylophone", "Tubular Bells", "Dulcimer", "Drawbar Organ", "Percussive Organ",
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						"Rock Organ", "Church Organ", "Reed Organ", "Accoridan", "Harmonica",
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						"Tango Accordian", "Nylon String Guitar", "Steel String Guitar",
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						"Electric Jazz Guitar", "Electric Clean Guitar", "Electric Muted Guitar",
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						"Overdriven Guitar", "Distortion Guitar", "Guitar Harmonics",
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						"Acoustic Bass", "Electric Bass (fingered)", "Electric Bass (picked)",
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						"Fretless Bass", "Slap Bass 1", "Slap Bass 2", "Synth Bass 1", "Synth Bass 2",
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						"Violin", "Viola", "Cello", "Contrabass", "Tremolo Strings", "Pizzicato Strings",
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						"Orchestral Strings", "Timpani", "String Ensemble 1", "String Ensemble 2",
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						"SynthStrings 1", "SynthStrings 2", "Choir Aahs", "Voice Oohs", "Synth Voice",
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						"Orchestra Hit", "Trumpet", "Trombone", "Tuba", "Muted Trumpet", "French Horn",
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						"Brass Section", "SynthBrass 1", "SynthBrass 2", "Soprano Sax", "Alto Sax",
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						"Tenor Sax", "Baritone Sax", "Oboe", "English Horn", "Bassoon", "Clarinet",
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						"Piccolo", "Flute", "Recorder", "Pan Flute", "Blown Bottle", "Skakuhachi",
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						"Whistle", "Ocarina", "Lead 1 (square)", "Lead 2 (sawtooth)", "Lead 3 (calliope)",
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						"Lead 4 (chiff)", "Lead 5 (charang)", "Lead 6 (voice)", "Lead 7 (fifths)",
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						"Lead 8 (bass+lead)", "Pad 1 (new age)", "Pad 2 (warm)", "Pad 3 (polysynth)",
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						"Pad 4 (choir)", "Pad 5 (bowed)", "Pad 6 (metallic)", "Pad 7 (halo)",
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						"Pad 8 (sweep)", "FX 1 (rain)", "FX 2 (soundtrack)", "FX 3 (crystal)",
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						"FX 4 (atmosphere)", "FX 5 (brightness)", "FX 6 (goblins)", "FX 7 (echoes)",
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						"FX 8 (sci-fi)", "Sitar", "Banjo", "Shamisen", "Koto", "Kalimba", "Bagpipe",
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						"Fiddle", "Shanai", "Tinkle Bell", "Agogo", "Steel Drums", "Woodblock",
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						"Taiko Drum", "Melodic Tom", "Synth Drum", "Reverse Cymbal", "Guitar Fret Noise",
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						"Breath Noise", "Seashore", "Bird Tweet", "Telephone Ring", "Helicopter",
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						"Applause", "Gunshot"
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					};
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					static const char *smpte_rates[] = {
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						"24 fps",
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						"25 fps",
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						"30 fps (drop frame)",
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						"30 fps (non drop frame)"
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					};
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					static const char *const major_keys[] = {
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						"Unknown major", "Fb", "Cb", "Gb", "Db", "Ab", "Eb", "Bb", "F",
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						"C", "G", "D", "A", "E", "B", "F#", "C#", "G#", "Unknown major"
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					};
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					static const char *const minor_keys[] = {
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						"Unknown minor", "Dbm", "Abm", "Ebm", "Bbm", "Fm", "Cm", "Gm", "Dm",
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						"Am", "Em", "Bm", "F#m", "C#m", "G#m", "D#m", "A#m", "E#m", "Unknown minor"
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					};
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					static const char *controller_name(uint8_t ctrl)
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					{
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						if (ctrl > 127 ||
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						    controller_names[ctrl] == NULL)
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							return "Unknown";
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						return controller_names[ctrl];
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					}
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					static void dump_mem(const char *label, uint8_t *data, uint32_t size)
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					{
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						printf("%s: ", label);
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						while (size--)
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							printf("%02x ", *data++);
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					}
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					int midi_file_dump_event(const struct midi_event *ev)
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					{
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						printf("track:%2d sec:%f ", ev->track, ev->sec);
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						switch (ev->data[0]) {
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						case 0x80 ... 0x8f:
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							printf("Note Off   (channel %2d): note %3s%d, velocity %3d",
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									ev->data[0] & 0x0f,
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									note_names[ev->data[1] % 12], ev->data[1] / 12 -1,
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									ev->data[2]);
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							break;
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						case 0x90 ... 0x9f:
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							printf("Note On    (channel %2d): note %3s%d, velocity %3d",
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									ev->data[0] & 0x0f,
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									note_names[ev->data[1] % 12], ev->data[1] / 12 -1,
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									ev->data[2]);
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							break;
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						case 0xa0 ... 0xaf:
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							printf("Aftertouch (channel %2d): note %3s%d, pressure %3d",
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									ev->data[0] & 0x0f,
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									note_names[ev->data[1] % 12], ev->data[1] / 12 -1,
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									ev->data[2]);
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							break;
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						case 0xb0 ... 0xbf:
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							printf("Controller (channel %2d): controller %3d (%s), value %3d",
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									ev->data[0] & 0x0f, ev->data[1],
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									controller_name(ev->data[1]), ev->data[2]);
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							break;
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						case 0xc0 ... 0xcf:
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							printf("Program    (channel %2d): program %3d (%s)",
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									ev->data[0] & 0x0f, ev->data[1],
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									program_names[ev->data[1]]);
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							break;
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						case 0xd0 ... 0xdf:
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							printf("Channel Pressure (channel %2d): pressure %3d",
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									ev->data[0] & 0x0f, ev->data[1]);
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							break;
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						case 0xe0 ... 0xef:
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							printf("Pitch Bend (channel %2d): value %d", ev->data[0] & 0x0f,
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									((int)ev->data[2] << 7 | ev->data[1]) - 0x2000);
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							break;
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						case 0xf0:
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						case 0xf7:
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							dump_mem("SysEx", ev->data, ev->size);
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							break;
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						case 0xff:
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							printf("Meta: ");
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							switch (ev->data[1]) {
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							case 0x00:
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								printf("Sequence Number %3d %3d", ev->data[3], ev->data[4]);
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								break;
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							case 0x01 ... 0x09:
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								printf("%s: %s", event_names[ev->data[1] - 1], &ev->data[ev->meta.offset]);
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								break;
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							case 0x20:
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								printf("Channel Prefix: %03d", ev->data[3]);
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								break;
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							case 0x21:
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								printf("Midi Port: %03d", ev->data[3]);
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								break;
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							case 0x2f:
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								printf("End Of Track");
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								break;
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							case 0x51:
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								printf("Tempo: %d microseconds per quarter note, %.2f BPM",
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										ev->meta.parsed.tempo.uspqn,
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										60000000.0 / (double)ev->meta.parsed.tempo.uspqn);
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								break;
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							case 0x54:
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								printf("SMPTE Offset: %s %02d:%02d:%02d:%02d.%03d",
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										smpte_rates[(ev->data[3] & 0x60) >> 5],
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										ev->data[3] & 0x1f, ev->data[4], ev->data[5],
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										ev->data[6], ev->data[7]);
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								break;
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							case 0x58:
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								printf("Time Signature: %d/%d, %d clocks per click, %d notated 32nd notes per quarter note",
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									ev->data[3], (int)pow(2, ev->data[4]), ev->data[5], ev->data[6]);
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								break;
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							case 0x59:
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							{
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								int sf = ev->data[3];
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								printf("Key Signature: %d %s: %s", abs(sf),
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										sf > 0 ? "sharps" : "flats",
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										ev->data[4] == 0 ?
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											major_keys[SPA_CLAMP(sf + 9, 0, 19)] :
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											minor_keys[SPA_CLAMP(sf + 9, 0, 19)]);
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								break;
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							}
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							case 0x7f:
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								dump_mem("Sequencer", ev->data, ev->size);
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								break;
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							default:
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								dump_mem("Invalid", ev->data, ev->size);
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							}
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							break;
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						}
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						printf("\n");
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						return 0;
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					}
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						 | 
					
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						 | 
					@ -60,3 +60,5 @@ int midi_file_next_time(struct midi_file *mf, double *sec);
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int midi_file_read_event(struct midi_file *mf, struct midi_event *event);
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					int midi_file_read_event(struct midi_file *mf, struct midi_event *event);
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int midi_file_write_event(struct midi_file *mf, const struct midi_event *event);
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					int midi_file_write_event(struct midi_file *mf, const struct midi_event *event);
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					int midi_file_dump_event(const struct midi_event *event);
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