Skip to content

Commit

Permalink
midi_utils
Browse files Browse the repository at this point in the history
  • Loading branch information
Reinissance committed Oct 7, 2024
1 parent 959d22f commit 8f79007
Show file tree
Hide file tree
Showing 5 changed files with 157 additions and 158 deletions.
6 changes: 3 additions & 3 deletions hvcc/generators/c2js/c2js.py
View file
Original file line number Diff line number Diff line change
Expand Up @@ -204,9 +204,9 @@ def compile(
externs=externs,
pool_sizes_kb=externs["memoryPoolSizesKb"]))

pre_js_path = os.path.join(out_dir, "hv_worklet_start.js")
pre_js_path = os.path.join(out_dir, "midi_utils.js")
with open(pre_js_path, "w") as f:
f.write(env.get_template("hv_worklet_start.js").render(
f.write(env.get_template("midi_utils.js").render(
name=patch_name,
copyright=copyright_js,
externs=externs,
Expand Down Expand Up @@ -296,4 +296,4 @@ def compile(
"out_dir": out_dir,
"out_file": "",
"compile_time": time.time() - tick
}
}
2 changes: 1 addition & 1 deletion hvcc/generators/c2js/template/hv_worklet.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -205,4 +205,4 @@ var tableHashes = {
{%- endfor %}
};

registerProcessor("{{name}}_AudioLibWorklet", {{name}}_AudioLibWorklet);
registerProcessor("{{name}}_AudioLibWorklet", {{name}}_AudioLibWorklet);
154 changes: 1 addition & 153 deletions hvcc/generators/c2js/template/hv_worklet_start.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -8,156 +8,4 @@ var self = {

function importScripts(){
console.warn('importScripts should not be called in an AudioWorklet', arguments);
}

// midi_utils.js

function sendMidiIn(hv_context, message) {
if (hv_context) {
var command = message[0] & 0xF0;
var channel = message[0] & 0x0F;
var data1 = message[1];
var data2 = message[2];

// all events to [midiin]
for (var i = 1; i <= 2; i++) {
_hv_sendMessageToReceiverFF(hv_context, HV_HASH_MIDIIN, 0,
message[i],
channel
);
}

// realtime events to [midirealtimein]
if (MIDI_REALTIME.includes(message[0])) {
_hv_sendMessageToReceiverFF(hv_context, HV_HASH_MIDIREALTIMEIN, 0,
message[0]
);
}

switch(command) {
case 0x80: // note off
_hv_sendMessageToReceiverFFF(hv_context, HV_HASH_NOTEIN, 0,
data1,
0,
channel);
break;
case 0x90: // note on
_hv_sendMessageToReceiverFFF(hv_context, HV_HASH_NOTEIN, 0,
data1,
data2,
channel);
break;
case 0xA0: // polyphonic aftertouch
_hv_sendMessageToReceiverFFF(hv_context, HV_HASH_POLYTOUCHIN, 0,
data2, // pressure
data1, // note
channel);
break;
case 0xB0: // control change
_hv_sendMessageToReceiverFFF(hv_context, HV_HASH_CTLIN, 0,
data2, // value
data1, // cc number
channel);
break;
case 0xC0: // program change
_hv_sendMessageToReceiverFF(hv_context, HV_HASH_PGMIN, 0,
data1,
channel);
break;
case 0xD0: // aftertouch
_hv_sendMessageToReceiverFF(hv_context, HV_HASH_TOUCHIN, 0,
data1,
channel);
break;
case 0xE0: // pitch bend
// combine 7bit lsb and msb into 32bit int
var value = (data2 << 7) | data1;
_hv_sendMessageToReceiverFF(hv_context, HV_HASH_BENDIN, 0,
value,
channel);
break;
default:
// console.error('No handler for midi message: ', message);
}
}
}

function midiOutMsg(sendName, msg) {
switch (sendName) {
case "__hv_noteout":
var note = _hv_msg_getFloat(msg, 0);
var velocity = _hv_msg_getFloat(msg, 1);
var channel = _hv_msg_getFloat(msg, 2) % 16; // no pd midi ports
return [
((velocity > 0) ? 144 : 128) | channel,
note,
velocity
]
case "__hv_ctlout":
var value = _hv_msg_getFloat(msg, 0);
var cc = _hv_msg_getFloat(msg, 1);
var channel = _hv_msg_getFloat(msg, 2) % 16; // no pd midi ports
return [
176 | channel,
cc,
value
]
case "__hv_pgmout":
var program = _hv_msg_getFloat(msg, 0);
var channel = _hv_msg_getFloat(msg, 1) % 16; // no pd midi ports
return [
192 | channel,
program
]
case "__hv_touchout":
var pressure = _hv_msg_getFloat(msg, 0);
var channel = _hv_msg_getFloat(msg, 1) % 16; // no pd midi ports
return [
208 | channel,
pressure,
]
case "__hv_polytouchout":
var value = _hv_msg_getFloat(msg, 0);
var note = _hv_msg_getFloat(msg, 1);
var channel = _hv_msg_getFloat(msg, 2) % 16; // no pd midiports
return[
160 | channel,
note,
value
]
case "__hv_bendout":
var value = _hv_msg_getFloat(msg, 0);
let lsb = value & 0x7F;
let msb = (value >> 7) & 0x7F;
var channel = _hv_msg_getFloat(msg, 2) % 16; // no pd midi ports
return [
224 | channel,
lsb,
msb
]
case "__hv_midiout":
let firstByte = _hv_msg_getFloat(msg, 0);
return (firstByte === 192 || firstByte === 208) ?
[_hv_msg_getFloat(msg, 0), _hv_msg_getFloat(msg, 1)] :
[_hv_msg_getFloat(msg, 0), _hv_msg_getFloat(msg, 1), _hv_msg_getFloat(msg, 2)];
default:
console.warn(`Unhandled sendName: ${sendName}`);
return [];
}
}


/*
* MIDI Constants
*/

const HV_HASH_NOTEIN = 0x67E37CA3;
const HV_HASH_CTLIN = 0x41BE0f9C;
const HV_HASH_POLYTOUCHIN = 0xBC530F59;
const HV_HASH_PGMIN = 0x2E1EA03D;
const HV_HASH_TOUCHIN = 0x553925BD;
const HV_HASH_BENDIN = 0x3083F0F7;
const HV_HASH_MIDIIN = 0x149631bE;
const HV_HASH_MIDIREALTIMEIN = 0x6FFF0BCF;

const MIDI_REALTIME = [0xF8, 0xFA, 0xFB, 0xFC, 0xFE, 0xFF];
}
3 changes: 2 additions & 1 deletion hvcc/generators/c2js/template/hv_wrapper.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,7 @@ var AudioLibLoader = function() {
* @param options.sendHook (Function) callback that gets triggered for messages sent via @hv_param/@hv_event
*/
AudioLibLoader.prototype.init = function(options) {

// use provided web audio context or create a new one
this.webAudioContext = options.webAudioContext ||
(new (window.AudioContext || window.webkitAudioContext || null));
Expand Down Expand Up @@ -307,4 +308,4 @@ var tableHashes = {
}
}

Module.{{name}}_AudioLib = {{name}}_AudioLib;
Module.{{name}}_AudioLib = {{name}}_AudioLib;
150 changes: 150 additions & 0 deletions hvcc/generators/c2js/template/midi_utils.js
View file
Original file line number Diff line number Diff line change
@@ -0,0 +1,150 @@
// midi_utils.js

function sendMidiIn(hv_context, message) {
if (hv_context) {
var command = message[0] & 0xF0;
var channel = message[0] & 0x0F;
var data1 = message[1];
var data2 = message[2];

// all events to [midiin]
for (var i = 1; i <= 2; i++) {
_hv_sendMessageToReceiverFF(hv_context, HV_HASH_MIDIIN, 0,
message[i],
channel
);
}

// realtime events to [midirealtimein]
if (MIDI_REALTIME.includes(message[0])) {
_hv_sendMessageToReceiverFF(hv_context, HV_HASH_MIDIREALTIMEIN, 0,
message[0]
);
}

switch(command) {
case 0x80: // note off
_hv_sendMessageToReceiverFFF(hv_context, HV_HASH_NOTEIN, 0,
data1,
0,
channel);
break;
case 0x90: // note on
_hv_sendMessageToReceiverFFF(hv_context, HV_HASH_NOTEIN, 0,
data1,
data2,
channel);
break;
case 0xA0: // polyphonic aftertouch
_hv_sendMessageToReceiverFFF(hv_context, HV_HASH_POLYTOUCHIN, 0,
data2, // pressure
data1, // note
channel);
break;
case 0xB0: // control change
_hv_sendMessageToReceiverFFF(hv_context, HV_HASH_CTLIN, 0,
data2, // value
data1, // cc number
channel);
break;
case 0xC0: // program change
_hv_sendMessageToReceiverFF(hv_context, HV_HASH_PGMIN, 0,
data1,
channel);
break;
case 0xD0: // aftertouch
_hv_sendMessageToReceiverFF(hv_context, HV_HASH_TOUCHIN, 0,
data1,
channel);
break;
case 0xE0: // pitch bend
// combine 7bit lsb and msb into 32bit int
var value = (data2 << 7) | data1;
_hv_sendMessageToReceiverFF(hv_context, HV_HASH_BENDIN, 0,
value,
channel);
break;
default:
// console.error('No handler for midi message: ', message);
}
}
}

function midiOutMsg(sendName, msg) {
switch (sendName) {
case "__hv_noteout":
var note = _hv_msg_getFloat(msg, 0);
var velocity = _hv_msg_getFloat(msg, 1);
var channel = _hv_msg_getFloat(msg, 2) % 16; // no pd midi ports
return [
((velocity > 0) ? 144 : 128) | channel,
note,
velocity
]
case "__hv_ctlout":
var value = _hv_msg_getFloat(msg, 0);
var cc = _hv_msg_getFloat(msg, 1);
var channel = _hv_msg_getFloat(msg, 2) % 16; // no pd midi ports
return [
176 | channel,
cc,
value
]
case "__hv_pgmout":
var program = _hv_msg_getFloat(msg, 0);
var channel = _hv_msg_getFloat(msg, 1) % 16; // no pd midi ports
return [
192 | channel,
program
]
case "__hv_touchout":
var pressure = _hv_msg_getFloat(msg, 0);
var channel = _hv_msg_getFloat(msg, 1) % 16; // no pd midi ports
return [
208 | channel,
pressure,
]
case "__hv_polytouchout":
var value = _hv_msg_getFloat(msg, 0);
var note = _hv_msg_getFloat(msg, 1);
var channel = _hv_msg_getFloat(msg, 2) % 16; // no pd midiports
return[
160 | channel,
note,
value
]
case "__hv_bendout":
var value = _hv_msg_getFloat(msg, 0);
let lsb = value & 0x7F;
let msb = (value >> 7) & 0x7F;
var channel = _hv_msg_getFloat(msg, 2) % 16; // no pd midi ports
return [
224 | channel,
lsb,
msb
]
case "__hv_midiout":
let firstByte = _hv_msg_getFloat(msg, 0);
return (firstByte === 192 || firstByte === 208) ?
[_hv_msg_getFloat(msg, 0), _hv_msg_getFloat(msg, 1)] :
[_hv_msg_getFloat(msg, 0), _hv_msg_getFloat(msg, 1), _hv_msg_getFloat(msg, 2)];
default:
console.warn(`Unhandled sendName: ${sendName}`);
return [];
}
}

/*
* MIDI Constants
*/

const HV_HASH_NOTEIN = 0x67E37CA3;
const HV_HASH_CTLIN = 0x41BE0f9C;
const HV_HASH_POLYTOUCHIN = 0xBC530F59;
const HV_HASH_PGMIN = 0x2E1EA03D;
const HV_HASH_TOUCHIN = 0x553925BD;
const HV_HASH_BENDIN = 0x3083F0F7;
const HV_HASH_MIDIIN = 0x149631bE;
const HV_HASH_MIDIREALTIMEIN = 0x6FFF0BCF;

const MIDI_REALTIME = [0xF8, 0xFA, 0xFB, 0xFC, 0xFE, 0xFF];

0 comments on commit 8f79007

Please sign in to comment.