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frontend: refactor input functions to their own file

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restitux
2025-08-10 01:29:56 -06:00
parent d5e341e232
commit a78bb2460e
2 changed files with 153 additions and 150 deletions
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frontend/src/lib/input.ts
+152
View File
@@ -0,0 +1,152 @@
import { Input } from "$lib/proto/input-event"
import { InputEvent } from "$lib/proto/input"
import { Builder } from "flatbuffers";
export enum KeyAction {
DOWN,
UP,
}
export async function sendKeyboardEvent(
writer: WritableStreamDefaultWriter,
event: KeyboardEvent,
keyAction: KeyAction,
) {
const builder = new Builder(1024);
InputEvent.KeyboardInput.startKeyboardInput(builder);
// Have to use keyCode even though it's deprecated beacuse .code is a unhelpful string :sigh:
InputEvent.KeyboardInput.addKeyCode(builder, event.keyCode);
InputEvent.KeyboardInput.addKeyAction(builder, keyAction);
const modifierState = InputEvent.ModifierState.createModifierState(
builder,
event.shiftKey,
event.ctrlKey,
event.altKey,
event.metaKey
);
InputEvent.KeyboardInput.addModifiers(builder, modifierState);
const keyboardInput = InputEvent.KeyboardInput.endKeyboardInput(builder);
// Create InputEvent table with union
InputEvent.InputEvent.startInputEvent(builder);
InputEvent.InputEvent.addInputType(builder, Input.Keyboard);
InputEvent.InputEvent.addInput(builder, keyboardInput);
const inputEvent = InputEvent.InputEvent.endInputEvent(builder);
// Finish the buffer
builder.finish(inputEvent);
// Get the buffer data
const bufferData = builder.asUint8Array();
// Create size prefix as big-endian u32
const sizePrefix = new Uint8Array(4);
const size = bufferData.length;
sizePrefix[0] = (size >> 24) & 0xFF; // Most significant byte
sizePrefix[1] = (size >> 16) & 0xFF;
sizePrefix[2] = (size >> 8) & 0xFF;
sizePrefix[3] = size & 0xFF; // Least significant byte
// Create combined buffer with size prefix + flatbuffer data
const combined = new Uint8Array(sizePrefix.length + bufferData.length);
combined.set(sizePrefix, 0);
combined.set(bufferData, sizePrefix.length);
// Write to stream
await writer.write(combined);
}
export async function sendMouseMoveEvent(
writer: WritableStreamDefaultWriter,
event: MouseEvent,
) {
const builder = new Builder(1024);
const mouseMovement = InputEvent.MouseMovement.createMouseMovement(builder, event.movementX, event.movementY);
// Create InputEvent table with union
InputEvent.InputEvent.startInputEvent(builder);
InputEvent.InputEvent.addInputType(builder, Input.MouseMovement);
InputEvent.InputEvent.addInput(builder, mouseMovement);
const inputEvent = InputEvent.InputEvent.endInputEvent(builder);
// Finish the buffer
builder.finish(inputEvent);
// Get the buffer data
const bufferData = builder.asUint8Array();
// Create size prefix as big-endian u32
const sizePrefix = new Uint8Array(4);
const size = bufferData.length;
sizePrefix[0] = (size >> 24) & 0xFF; // Most significant byte
sizePrefix[1] = (size >> 16) & 0xFF;
sizePrefix[2] = (size >> 8) & 0xFF;
sizePrefix[3] = size & 0xFF; // Least significant byte
// Create combined buffer with size prefix + flatbuffer data
const combined = new Uint8Array(sizePrefix.length + bufferData.length);
combined.set(sizePrefix, 0);
combined.set(bufferData, sizePrefix.length);
// Write to stream
await writer.write(combined);
}
export async function sendMouseInputEvent(
writer: WritableStreamDefaultWriter,
event: MouseEvent,
keyAction: KeyAction,
) {
const builder = new Builder(1024);
var mouseButton: InputEvent.MouseButton;
switch (event.button) {
case 0:
mouseButton = InputEvent.MouseButton.LEFT;
break;
case 1:
mouseButton = InputEvent.MouseButton.MIDDLE;
break;
case 2:
mouseButton = InputEvent.MouseButton.RIGHT;
break;
default:
console.log(`Unknown mouse button ${event.button}, defaulting to LEFT`);
mouseButton = InputEvent.MouseButton.LEFT;
break;
}
const mouseInput = InputEvent.MouseInput.createMouseInput(builder, mouseButton, keyAction);
// Create InputEvent table with union
InputEvent.InputEvent.startInputEvent(builder);
InputEvent.InputEvent.addInputType(builder, Input.MouseInput);
InputEvent.InputEvent.addInput(builder, mouseInput);
const inputEvent = InputEvent.InputEvent.endInputEvent(builder);
// Finish the buffer
builder.finish(inputEvent);
// Get the buffer data
const bufferData = builder.asUint8Array();
// Create size prefix as big-endian u32
const sizePrefix = new Uint8Array(4);
const size = bufferData.length;
sizePrefix[0] = (size >> 24) & 0xFF; // Most significant byte
sizePrefix[1] = (size >> 16) & 0xFF;
sizePrefix[2] = (size >> 8) & 0xFF;
sizePrefix[3] = size & 0xFF; // Least significant byte
// Create combined buffer with size prefix + flatbuffer data
const combined = new Uint8Array(sizePrefix.length + bufferData.length);
combined.set(sizePrefix, 0);
combined.set(bufferData, sizePrefix.length);
// Write to stream
await writer.write(combined);
}
frontend/src/routes/stream/stream.ts
+1 -150
View File
@@ -1,6 +1,4 @@
import { Input } from "$lib/proto/input-event"
import { InputEvent } from "../../lib/proto/input"
import { Builder } from "flatbuffers"
import { sendKeyboardEvent, sendMouseInputEvent, sendMouseMoveEvent, KeyAction } from "$lib/input"
type Setup = {
video_format: string,
@@ -173,154 +171,7 @@ export async function streamVideoFromReader(reader: ReadableStreamDefaultReader,
}
}
enum KeyAction {
DOWN,
UP,
}
async function sendKeyboardEvent(
writer: WritableStreamDefaultWriter,
event: KeyboardEvent,
keyAction: KeyAction,
) {
const builder = new Builder(1024);
InputEvent.KeyboardInput.startKeyboardInput(builder);
// Have to use keyCode even though it's deprecated beacuse .code is a unhelpful string :sigh:
InputEvent.KeyboardInput.addKeyCode(builder, event.keyCode);
InputEvent.KeyboardInput.addKeyAction(builder, keyAction);
const modifierState = InputEvent.ModifierState.createModifierState(
builder,
event.shiftKey,
event.ctrlKey,
event.altKey,
event.metaKey
);
InputEvent.KeyboardInput.addModifiers(builder, modifierState);
const keyboardInput = InputEvent.KeyboardInput.endKeyboardInput(builder);
// Create InputEvent table with union
InputEvent.InputEvent.startInputEvent(builder);
InputEvent.InputEvent.addInputType(builder, Input.Keyboard);
InputEvent.InputEvent.addInput(builder, keyboardInput);
const inputEvent = InputEvent.InputEvent.endInputEvent(builder);
// Finish the buffer
builder.finish(inputEvent);
// Get the buffer data
const bufferData = builder.asUint8Array();
// Create size prefix as big-endian u32
const sizePrefix = new Uint8Array(4);
const size = bufferData.length;
sizePrefix[0] = (size >> 24) & 0xFF; // Most significant byte
sizePrefix[1] = (size >> 16) & 0xFF;
sizePrefix[2] = (size >> 8) & 0xFF;
sizePrefix[3] = size & 0xFF; // Least significant byte
// Create combined buffer with size prefix + flatbuffer data
const combined = new Uint8Array(sizePrefix.length + bufferData.length);
combined.set(sizePrefix, 0);
combined.set(bufferData, sizePrefix.length);
// Write to stream
await writer.write(combined);
}
async function sendMouseMoveEvent(
writer: WritableStreamDefaultWriter,
event: MouseEvent,
) {
const builder = new Builder(1024);
const mouseMovement = InputEvent.MouseMovement.createMouseMovement(builder, event.movementX, event.movementY);
// Create InputEvent table with union
InputEvent.InputEvent.startInputEvent(builder);
InputEvent.InputEvent.addInputType(builder, Input.MouseMovement);
InputEvent.InputEvent.addInput(builder, mouseMovement);
const inputEvent = InputEvent.InputEvent.endInputEvent(builder);
// Finish the buffer
builder.finish(inputEvent);
// Get the buffer data
const bufferData = builder.asUint8Array();
// Create size prefix as big-endian u32
const sizePrefix = new Uint8Array(4);
const size = bufferData.length;
sizePrefix[0] = (size >> 24) & 0xFF; // Most significant byte
sizePrefix[1] = (size >> 16) & 0xFF;
sizePrefix[2] = (size >> 8) & 0xFF;
sizePrefix[3] = size & 0xFF; // Least significant byte
// Create combined buffer with size prefix + flatbuffer data
const combined = new Uint8Array(sizePrefix.length + bufferData.length);
combined.set(sizePrefix, 0);
combined.set(bufferData, sizePrefix.length);
// Write to stream
await writer.write(combined);
}
async function sendMouseInputEvent(
writer: WritableStreamDefaultWriter,
event: MouseEvent,
keyAction: KeyAction,
) {
const builder = new Builder(1024);
var mouseButton: InputEvent.MouseButton;
switch (event.button) {
case 0:
mouseButton = InputEvent.MouseButton.LEFT;
break;
case 1:
mouseButton = InputEvent.MouseButton.MIDDLE;
break;
case 2:
mouseButton = InputEvent.MouseButton.RIGHT;
break;
default:
console.log(`Unknown mouse button ${event.button}, defaulting to LEFT`);
mouseButton = InputEvent.MouseButton.LEFT;
break;
}
const mouseInput = InputEvent.MouseInput.createMouseInput(builder, mouseButton, keyAction);
// Create InputEvent table with union
InputEvent.InputEvent.startInputEvent(builder);
InputEvent.InputEvent.addInputType(builder, Input.MouseInput);
InputEvent.InputEvent.addInput(builder, mouseInput);
const inputEvent = InputEvent.InputEvent.endInputEvent(builder);
// Finish the buffer
builder.finish(inputEvent);
// Get the buffer data
const bufferData = builder.asUint8Array();
// Create size prefix as big-endian u32
const sizePrefix = new Uint8Array(4);
const size = bufferData.length;
sizePrefix[0] = (size >> 24) & 0xFF; // Most significant byte
sizePrefix[1] = (size >> 16) & 0xFF;
sizePrefix[2] = (size >> 8) & 0xFF;
sizePrefix[3] = size & 0xFF; // Least significant byte
// Create combined buffer with size prefix + flatbuffer data
const combined = new Uint8Array(sizePrefix.length + bufferData.length);
combined.set(sizePrefix, 0);
combined.set(bufferData, sizePrefix.length);
// Write to stream
await writer.write(combined);
}