backup

backup/.htaccess

@@ -0,0 +1,3 @@
+RewriteEngine on
+RewriteCond %{REQUEST_URI} \.bin$ [NC]
+RewriteRule ^(.*\.bin)$ /busanzeiger-webinterface/src/show.php [L,QSA]

backup/active.txt

@@ -0,0 +1 @@
+Schildkroete.bin

backup/binfmt.js

@@ -0,0 +1,165 @@
+// Binary Framebuffer Encoder
+// Converts pixel data to binary format for bus display
+
+const MAGIC = [66, 78, 23, 238];
+const DrawEntryType = {
+  Image: 1,
+  Animation: 2,
+  HScroll: 3,
+  VScroll: 4,
+  Line: 5
+};
+
+function bitmapSizeBytes(width, height) {
+  return Math.floor((width * height + 7) / 8);
+}
+
+function setPixelInBitmap(x, y, memory, width, height, value) {
+  const index = y * width + x;
+  const byteIndex = Math.floor(index / 8);
+  const bitIndex = index % 8;
+  if (value) {
+    memory[byteIndex] |= 1 << bitIndex;
+  } else {
+    memory[byteIndex] &= ~(1 << bitIndex);
+  }
+}
+
+class BinaryFramebufferEncoder {
+  entries = [];
+
+  addImage(posX, posY, width, height, pixelData) {
+    const data = new Uint8Array(bitmapSizeBytes(width, height));
+    for (let y = 0; y < height; y++) {
+      for (let x = 0; x < width; x++) {
+        setPixelInBitmap(x, y, data, width, height, pixelData[y][x]);
+      }
+    }
+    this.entries.push({
+      type: DrawEntryType.Image,
+      header: { posX, posY },
+      width,
+      height,
+      data
+    });
+  }
+
+  addAnimation(posX, posY, width, height, frameCount, updateInterval, frames) {
+    const frameSize = bitmapSizeBytes(width, height);
+    const data = new Uint8Array(frameSize * frameCount);
+    for (let f = 0; f < frameCount; f++) {
+      const frameData = data.subarray(f * frameSize, (f + 1) * frameSize);
+      for (let y = 0; y < height; y++) {
+        for (let x = 0; x < width; x++) {
+          setPixelInBitmap(x, y, frameData, width, height, frames[f][y][x]);
+        }
+      }
+    }
+    this.entries.push({
+      type: DrawEntryType.Animation,
+      header: { posX, posY },
+      width,
+      height,
+      frameCount,
+      updateInterval,
+      data
+    });
+  }
+
+  encode() {
+    let totalSize = 5;
+    for (const entry of this.entries) {
+      totalSize += 3;
+      switch (entry.type) {
+        case DrawEntryType.Image:
+          totalSize += 2 + entry.data.length;
+          break;
+        case DrawEntryType.Animation:
+          totalSize += 4 + entry.data.length;
+          break;
+      }
+    }
+    const buffer = new Uint8Array(totalSize);
+    let pos = 0;
+    buffer.set(MAGIC, pos);
+    pos += 4;
+    buffer[pos++] = this.entries.length;
+    for (const entry of this.entries) {
+      buffer[pos++] = entry.type;
+      buffer[pos++] = entry.header.posX;
+      buffer[pos++] = entry.header.posY;
+      switch (entry.type) {
+        case DrawEntryType.Image:
+          buffer[pos++] = entry.width;
+          buffer[pos++] = entry.height;
+          buffer.set(entry.data, pos);
+          pos += entry.data.length;
+          break;
+        case DrawEntryType.Animation:
+          buffer[pos++] = entry.width;
+          buffer[pos++] = entry.height;
+          buffer[pos++] = entry.frameCount;
+          buffer[pos++] = entry.updateInterval;
+          buffer.set(entry.data, pos);
+          pos += entry.data.length;
+          break;
+      }
+    }
+    return buffer;
+  }
+}
+
+function parseJSONFrames(text, width = 120, height = 60, maxFrames = 50) {
+  const json = JSON.parse(text);
+  if (!Array.isArray(json)) {
+    throw new Error("JSON must be an array of frames");
+  }
+  const frames = [];
+  for (const frame of json) {
+    if (!Array.isArray(frame)) {
+      throw new Error("Each frame must be an array of coordinates");
+    }
+    const pixels = Array(height).fill(null).map(() => Array(width).fill(false));
+    for (const change of frame) {
+      const [x, y] = change;
+      if (y < pixels.length && x < pixels[y].length) {
+        pixels[y][x] = true;
+      }
+    }
+    if (frames.length >= maxFrames) continue;
+    frames.push(pixels);
+  }
+  return frames;
+}
+
+function jsonToBinary(jsonString, options = {}) {
+  const {
+    startX = 0,
+    startY = 0,
+    updateInterval = 3,
+    width = 120,
+    height = 60,
+    maxFrames = 50
+  } = options;
+  const encoder = new BinaryFramebufferEncoder();
+  const frames = parseJSONFrames(jsonString, width, height, maxFrames);
+  if (frames.length === 1) {
+    encoder.addImage(startX, startY, width, height, frames[0]);
+  } else {
+    encoder.addAnimation(startX, startY, width, height, frames.length, updateInterval, frames);
+  }
+  return encoder.encode();
+}
+
+// Helper function to drop every nth frame from a frame array
+function dropEveryNthFrame(frames, n) {
+  if (n <= 1 || frames.length <= 1) return frames;
+  return frames.filter((frame, index) => (index + 1) % n !== 0);
+}
+
+// Helper function to keep 1 frame, drop 2 frames in repeating pattern
+// Pattern: keep, drop, drop, keep, drop, drop, ...
+function keepOneDropTwo(frames) {
+  if (frames.length <= 1) return frames;
+  return frames.filter((frame, index) => index % 3 === 0);
+}

backup/editor/index.html

@@ -0,0 +1,112 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+  <meta charset="UTF-8" />
+  <meta name="viewport" content="width=device-width,initial-scale=1.0" />
+  <title>MonoDisplay Editor</title>
+  <script>!function(){var t=localStorage.getItem('theme');t&&document.documentElement.setAttribute('data-theme',t)}();</script>
+  <link href="style.css" rel="stylesheet"/>
+</head>
+
+<body>
+
+  <div id="topbar">
+    <span class="app-name">MonoDisplay</span>
+    <div class="tb-sep"></div>
+    <button class="tb-btn" onclick="document.getElementById('file-input').click()">
+      <svg viewBox="0 0 24 24">
+        <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" />
+        <polyline points="17 8 12 3 7 8" />
+        <line x1="12" y1="3" x2="12" y2="15" />
+      </svg>
+      Load .bin
+    </button>
+    <input type="file" id="file-input" accept=".bin" onchange="loadBin(this)" />
+    <button class="tb-btn" onclick="exportBin()">
+      <svg viewBox="0 0 24 24">
+        <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4" />
+        <polyline points="7 10 12 15 17 10" />
+        <line x1="12" y1="15" x2="12" y2="3" />
+      </svg>
+      Export .bin
+    </button>
+    <div class="tb-sep"></div>
+    <button class="tb-btn" onclick="clearAll()">
+      <svg viewBox="0 0 24 24">
+        <polyline points="3 6 5 6 21 6" />
+        <path d="M19 6l-1 14H6L5 6" />
+        <path d="M10 11v6M14 11v6" />
+      </svg>
+      Clear all
+    </button>
+    <button class="tb-btn" onclick="addSection()">
+      <svg viewBox="0 0 24 24">
+        <line x1="12" y1="5" x2="12" y2="19" />
+        <line x1="5" y1="12" x2="19" y2="12" />
+      </svg>
+      Add section
+    </button>
+    <span id="filename">untitled</span>
+    <div style="flex:1"></div>
+    <div class="tb-sep"></div>
+    <button class="tb-btn" id="theme-toggle" onclick="cycleTheme()">⊙ auto</button>
+  </div>
+
+  <div id="main">
+    <div id="left">
+      <span class="pv-label">preview · 120 × 60</span>
+      <div id="display-box">
+        <canvas id="canvas_root" width="120" height="60"></canvas>
+      </div>
+      <span class="pv-label">demos</span>
+      <div id="demo-btns"></div>
+      <div id="sec-meta">
+        <div class="meta-row">
+          <label>Selected section</label>
+          <span class="meta-val green" id="meta-name">-</span>
+        </div>
+        <div class="meta-row">
+          <label>Elements</label>
+          <span class="meta-val" id="meta-count">-</span>
+        </div>
+        <div class="meta-row">
+          <label>Section flags</label>
+          <label class="flag-check">
+            <input type="checkbox" id="flag-drawFront" onchange="setSectionFlag('drawFront',this.checked)" />
+            drawFront
+          </label>
+          <label class="flag-check" style="margin-left:-8px">
+            <input type="checkbox" id="flag-drawBack" onchange="setSectionFlag('drawBack',this.checked)" />
+            drawBack
+          </label>
+          <label class="flag-check" style="margin-left:-8px">
+            <input type="checkbox" id="flag-clearBuffer" onchange="setSectionFlag('clearBuffer',this.checked)" />
+            clearBuffer
+          </label>
+        </div>
+      </div>
+    </div>
+
+    <div id="right">
+      <div id="right-hdr">
+        <span class="rh-title">sections</span>
+      </div>
+      <div id="sections-wrap">
+        <div class="empty-state">No sections yet.<br />Use <b>Add section</b> to get started.</div>
+      </div>
+    </div>
+  </div>
+
+  <!-- confirm dialog -->
+  <div id="confirm-overlay">
+    <div id="confirm-box">
+      <div id="confirm-msg"></div>
+      <div id="confirm-btns"></div>
+    </div>
+  </div>
+
+  <script src="./public/mono-display.js"></script>
+</body>
+
+</html>

backup/editor/style.css

@@ -0,0 +1,682 @@
+:root {
+  --bg: #111;
+  --bg-bar: #1a1a1a;
+  --bg-raised: #161616;
+  --bg-hover: #1b1b1b;
+  --bg-hover2: #222;
+  --bg-sunken: #141414;
+  --bg-accent: #141e14;
+  --bg-active: #1e2e1e;
+  --bg-deep: #0f0f0f;
+  --bg-input: #0a0a0a;
+  --bg-canvas: #000;
+  --bg-xhover: #1e1010;
+  --bg-overlay: rgba(0,0,0,.6);
+  --bd: #2a2a2a;
+  --bd-inner: #1e1e1e;
+  --bd-deep: #1c1c1c;
+  --bd-card: #222;
+  --bd-btn: #2d2d2d;
+  --bd-type: #252525;
+  --bd-active: #2b3d2b;
+  --bd-hover: #444;
+  --bd-strong: #333;
+  --tx: #ccc;
+  --tx-hover: #bbb;
+  --tx-sub: #888;
+  --tx-label: #777;
+  --tx-meta: #666;
+  --tx-dim: #555;
+  --tx-faint: #444;
+  --tx-ghost: #333;
+  --tx-file: #3a3a3a;
+  --tx-empty: #2e2e2e;
+  --ac: #33ff66;
+  --dirty: #886622
+}
+
+@media (prefers-color-scheme: light) {
+  :root:not([data-theme="dark"]) {
+    --bg: #f5f5f5;
+    --bg-bar: #e8e8e8;
+    --bg-raised: #efefef;
+    --bg-hover: #e5e5e5;
+    --bg-hover2: #e0e0e0;
+    --bg-sunken: #ebebeb;
+    --bg-accent: #e8f5e8;
+    --bg-active: #dff0df;
+    --bg-deep: #f0f0f0;
+    --bg-input: #fff;
+    --bg-canvas: #fff;
+    --bg-xhover: #ffe8e8;
+    --bg-overlay: rgba(0,0,0,.4);
+    --bd: #d0d0d0;
+    --bd-inner: #ddd;
+    --bd-deep: #e0e0e0;
+    --bd-card: #ddd;
+    --bd-btn: #ccc;
+    --bd-type: #d8d8d8;
+    --bd-active: #7dc87d;
+    --bd-hover: #bbb;
+    --bd-strong: #ccc;
+    --tx: #222;
+    --tx-hover: #333;
+    --tx-sub: #555;
+    --tx-label: #666;
+    --tx-meta: #777;
+    --tx-dim: #888;
+    --tx-faint: #999;
+    --tx-ghost: #aaa;
+    --tx-file: #aaa;
+    --tx-empty: #bbb;
+    --ac: #1a9940;
+    --dirty: #b37a00
+  }
+}
+
+[data-theme="light"] {
+  --bg: #f5f5f5;
+  --bg-bar: #e8e8e8;
+  --bg-raised: #efefef;
+  --bg-hover: #e5e5e5;
+  --bg-hover2: #e0e0e0;
+  --bg-sunken: #ebebeb;
+  --bg-accent: #e8f5e8;
+  --bg-active: #dff0df;
+  --bg-deep: #f0f0f0;
+  --bg-input: #fff;
+  --bg-canvas: #fff;
+  --bg-xhover: #ffe8e8;
+  --bg-overlay: rgba(0,0,0,.4);
+  --bd: #d0d0d0;
+  --bd-inner: #ddd;
+  --bd-deep: #e0e0e0;
+  --bd-card: #ddd;
+  --bd-btn: #ccc;
+  --bd-type: #d8d8d8;
+  --bd-active: #7dc87d;
+  --bd-hover: #bbb;
+  --bd-strong: #ccc;
+  --tx: #222;
+  --tx-hover: #333;
+  --tx-sub: #555;
+  --tx-label: #666;
+  --tx-meta: #777;
+  --tx-dim: #888;
+  --tx-faint: #999;
+  --tx-ghost: #aaa;
+  --tx-file: #aaa;
+  --tx-empty: #bbb;
+  --ac: #1a9940;
+  --dirty: #b37a00
+}
+
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+  margin: 0;
+  padding: 0
+}
+
+body {
+  background: var(--bg);
+  color: var(--tx);
+  font-family: monospace;
+  height: 100vh;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+  font-size: 12px
+}
+
+#topbar {
+  height: 36px;
+  background: var(--bg-bar);
+  border-bottom: 1px solid var(--bd);
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 0 12px;
+  flex-shrink: 0
+}
+
+#topbar .app-name {
+  color: var(--tx-dim);
+  font-size: 11px;
+  letter-spacing: .12em;
+  text-transform: uppercase;
+  margin-right: 4px
+}
+
+.tb-btn {
+  background: var(--bg-raised);
+  color: var(--tx-sub);
+  border: 1px solid var(--bd-btn);
+  border-radius: 3px;
+  padding: 3px 10px;
+  font-family: monospace;
+  font-size: 11px;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  gap: 5px;
+  white-space: nowrap
+}
+
+.tb-btn:hover {
+  background: var(--bg-hover2);
+  color: var(--tx-hover);
+  border-color: var(--bd-hover)
+}
+
+.tb-btn svg {
+  width: 13px;
+  height: 13px;
+  stroke: currentColor;
+  fill: none;
+  stroke-width: 1.8;
+  stroke-linecap: round;
+  stroke-linejoin: round;
+  flex-shrink: 0
+}
+
+#file-input {
+  display: none
+}
+
+#filename {
+  color: var(--tx-file);
+  font-size: 11px;
+  margin-left: 2px;
+  max-width: 200px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap
+}
+
+.tb-sep {
+  width: 1px;
+  height: 18px;
+  background: var(--bd)
+}
+
+.dirty {
+  color: var(--dirty) !important
+}
+
+#main {
+  flex: 1;
+  display: flex;
+  min-height: 0
+}
+
+#left {
+  width: 48%;
+  border-right: 1px solid var(--bd-inner);
+  display: flex;
+  flex-direction: column;
+  padding: 14px;
+  gap: 10px;
+  overflow-y: auto;
+  flex-shrink: 0
+}
+
+#display-box {
+  width: 100%;
+  aspect-ratio: 2/1;
+  background: var(--bg-canvas);
+  border: 1px solid var(--bd);
+  border-radius: 3px;
+  overflow: hidden
+}
+
+#canvas_root {
+  width: 100%;
+  height: 100%;
+  display: block;
+  image-rendering: pixelated;
+  image-rendering: crisp-edges
+}
+
+.pv-label {
+  font-size: 10px;
+  color: var(--tx-ghost);
+  letter-spacing: .1em;
+  text-transform: uppercase
+}
+
+#demo-btns {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 5px;
+  margin-top: 6px
+}
+#demo-btns > div {
+  display: contents;
+}
+
+canvas.pixel-editor {
+  display: block;
+  cursor: crosshair;
+  image-rendering: pixelated;
+  max-width: 100%;
+  border: 1px solid var(--bd-inner);
+}
+.anim-editor {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+.anim-frame-tabs {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 3px;
+  align-items: center;
+}
+.anim-frame-tab {
+  display: flex;
+  align-items: center;
+  gap: 2px;
+  padding: 2px 6px;
+  border: 1px solid var(--bd-inner);
+  border-radius: 3px;
+  cursor: pointer;
+  font-size: 11px;
+  user-select: none;
+}
+.anim-frame-tab.active {
+  border-color: var(--accent, #EC0);
+  color: var(--accent, #EC0);
+}
+.x-btn-sm {
+  background: none;
+  border: none;
+  color: inherit;
+  cursor: pointer;
+  padding: 0 2px;
+  font-size: 13px;
+  line-height: 1;
+  opacity: 0.6;
+}
+.x-btn-sm:hover { opacity: 1; }
+
+#sec-meta {
+  background: var(--bg-sunken);
+  border: 1px solid var(--bd-inner);
+  border-radius: 3px;
+  padding: 8px 10px;
+  display: flex;
+  flex-direction: column;
+  gap: 6px
+}
+
+.meta-row {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 11px
+}
+
+.meta-row label {
+  color: var(--tx-faint);
+  min-width: 90px
+}
+
+.meta-val {
+  color: var(--tx-meta)
+}
+
+.green {
+  color: var(--ac)
+}
+
+select.meta-val {
+  background: var(--bg-input);
+  color: var(--ac);
+  border: 1px solid var(--bd-inner);
+  border-radius: 3px;
+  padding: 1px 4px;
+}
+
+.flag-check {
+  display: flex;
+  align-items: center;
+  gap: 5px;
+  font-size: 11px;
+  color: var(--tx-dim);
+  cursor: pointer
+}
+
+.flag-check input {
+  accent-color: var(--ac);
+  cursor: pointer
+}
+
+#right {
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+  overflow: hidden
+}
+
+#right-hdr {
+  height: 36px;
+  background: var(--bg-sunken);
+  border-bottom: 1px solid var(--bd-inner);
+  display: flex;
+  align-items: center;
+  padding: 0 10px;
+  gap: 6px;
+  flex-shrink: 0
+}
+
+#right-hdr .rh-title {
+  flex: 1;
+  color: var(--tx-faint);
+  font-size: 11px;
+  letter-spacing: .08em;
+  text-transform: uppercase
+}
+
+#sections-wrap {
+  flex: 1;
+  overflow-y: auto;
+  padding: 8px
+}
+
+.empty-state {
+  color: var(--tx-empty);
+  font-size: 11px;
+  padding: 28px 16px;
+  text-align: center;
+  line-height: 2
+}
+
+/* section card */
+.sec-card {
+  border: 1px solid var(--bd-card);
+  border-radius: 3px;
+  margin-bottom: 5px;
+  overflow: hidden
+}
+
+.sec-card.active {
+  border-color: var(--bd-active)
+}
+
+.sec-hdr {
+  display: flex;
+  align-items: center;
+  gap: 7px;
+  padding: 6px 8px;
+  cursor: pointer;
+  user-select: none;
+  background: var(--bg-raised);
+  position: relative
+}
+
+.sec-hdr:hover {
+  background: var(--bg-hover)
+}
+
+.sec-card.active .sec-hdr,
+.sec-hdr.active {
+  background: var(--bg-active)
+}
+
+.sec-arrow {
+  color: var(--tx-ghost);
+  font-size: 13px;
+  line-height: 1;
+  transition: transform .12s;
+  flex-shrink: 0
+}
+
+.sec-card.open .sec-arrow {
+  transform: rotate(90deg)
+}
+
+.sec-label {
+  flex: 1;
+  color: var(--tx-label);
+  font-size: 11px
+}
+
+.sec-badge {
+  font-size: 10px;
+  color: var(--ac);
+  border: 1px solid var(--bd-active);
+  background: var(--bg-accent);
+  border-radius: 2px;
+  padding: 1px 6px;
+  flex-shrink: 0
+}
+
+/* red ×  - section & element */
+.x-btn {
+  background: none;
+  border: none;
+  color: var(--bd);
+  cursor: pointer;
+  font-size: 15px;
+  line-height: 1;
+  padding: 2px 5px;
+  border-radius: 2px;
+  flex-shrink: 0;
+  transition: color .1s, background .1s
+}
+
+.x-btn:hover {
+  color: #ff4444;
+  background: var(--bg-xhover)
+}
+
+/* element */
+.el-list {
+  background: var(--bg-deep);
+  border-top: 1px solid var(--bd-deep);
+  padding: 6px
+}
+
+.el-item {
+  border: 1px solid var(--bd-inner);
+  border-radius: 3px;
+  background: var(--bg-sunken);
+  margin-bottom: 4px;
+  overflow: hidden
+}
+
+.el-item.active {
+  border-color: var(--ac)
+}
+
+.el-item-hdr {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  padding: 5px 8px;
+  cursor: pointer
+}
+
+.el-item-hdr:hover {
+  background: var(--bg-hover)
+}
+
+.el-type {
+  font-size: 10px;
+  color: var(--tx-meta);
+  border: 1px solid var(--bd-type);
+  border-radius: 2px;
+  padding: 1px 6px;
+  flex-shrink: 0
+}
+
+.el-item.active .el-type {
+  color: var(--ac);
+  border-color: var(--bd-active)
+}
+
+.el-name {
+  flex: 1;
+  color: var(--tx-dim);
+  font-size: 11px;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  max-width: 120px
+}
+
+.el-fields {
+  padding: 6px 8px 8px;
+  border-top: 1px solid var(--bg-bar);
+  display: flex;
+  flex-direction: column;
+  gap: 5px
+}
+
+.fields-grid {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 4px 10px
+}
+
+.field {
+  display: flex;
+  flex-direction: column;
+  gap: 2px
+}
+
+.field.full {
+  grid-column: 1/-1
+}
+
+.field>label {
+  font-size: 10px;
+  color: var(--tx-faint)
+}
+
+.field input[type=text],
+.field input[type=number],
+.field input[type=datetime-local],
+.field select,
+.field textarea {
+  background: var(--bg-input);
+  color: var(--tx-sub);
+  border: 1px solid var(--bd-card);
+  border-radius: 2px;
+  padding: 3px 6px;
+  font-family: monospace;
+  font-size: 11px;
+  width: 100%;
+  outline: none
+}
+
+.field input:focus,
+.field select:focus,
+.field textarea:focus {
+  border-color: var(--ac);
+  color: var(--tx)
+}
+
+.field textarea {
+  resize: vertical;
+  min-height: 44px;
+  line-height: 1.4
+}
+
+.field select option {
+  background: var(--bg-bar);
+  color: var(--tx-ghost)
+}
+
+.flags-row {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 10px;
+  padding: 2px 0
+}
+
+.add-el {
+  background: transparent;
+  color: var(--tx-ghost);
+  border: 1px dashed var(--bd-card);
+  border-radius: 3px;
+  padding: 5px 8px;
+  font-family: monospace;
+  font-size: 11px;
+  cursor: pointer;
+  width: 100%;
+  text-align: center;
+  margin-top: 2px
+}
+
+.add-el:hover {
+  color: var(--tx-sub);
+  border-color: var(--bd-hover)
+}
+
+/* confirm dialog */
+#confirm-overlay {
+  display: none;
+  position: fixed;
+  inset: 0;
+  background: var(--bg-overlay);
+  z-index: 100;
+  align-items: center;
+  justify-content: center
+}
+
+#confirm-overlay.show {
+  display: flex
+}
+
+#confirm-box {
+  background: var(--bg-bar);
+  border: 1px solid var(--bd-strong);
+  border-radius: 4px;
+  padding: 20px 24px;
+  max-width: 340px;
+  width: 90%;
+  display: flex;
+  flex-direction: column;
+  gap: 14px
+}
+
+#confirm-msg {
+  color: var(--tx-ghost);
+  font-size: 12px;
+  line-height: 1.6
+}
+
+#confirm-btns {
+  display: flex;
+  gap: 8px;
+  justify-content: flex-end
+}
+
+.cb {
+  background: var(--bg-raised);
+  color: var(--tx-sub);
+  border: 1px solid var(--bd-btn);
+  border-radius: 3px;
+  padding: 4px 14px;
+  font-family: monospace;
+  font-size: 11px;
+  cursor: pointer
+}
+
+.cb:hover {
+  background: var(--bg-hover2);
+  color: var(--tx-hover)
+}
+
+.cb.primary {
+  border-color: var(--bd-active);
+  color: var(--ac)
+}
+
+.cb.primary:hover {
+  background: var(--bg-active)
+}

backup/gpn/monoformat_bithelpers.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace monoformat {
+
+function isBitSet(int $value, int $bit) {
+    if ($bit < 0 || $bit >= (PHP_INT_SIZE * 8)) {
+        return false;
+    }
+    $mask = 1 << $bit;
+    return ($value & $mask) == $mask;
+}
+
+function setBit(int &$value, int $bit) {
+    if ($bit < 0 || $bit >= (PHP_INT_SIZE * 8)) {
+        return;
+    }
+    $mask = 1 << $bit;
+    $value |= $mask;
+}
+
+function unsetBit(int &$value, int $bit) {
+    if ($bit < 0 || $bit >= (PHP_INT_SIZE * 8)) {
+        return;
+    }
+    $mask = 1 << $bit;
+    $value &= ~$mask;
+}
+
+function maybeSetBit(int &$value, int $bit, int $set) {
+    if ($bit < 0 || $bit >= (PHP_INT_SIZE * 8)) {
+        return;
+    }
+    $mask = 1 << $bit;
+    if ($set) {
+        $value |= $mask;
+    } else {
+        $value &= ~$mask;
+    }
+}
+
+} // namespace monoformat
+
+?>

backup/gpn/monoformat_schema.php

@@ -0,0 +1,213 @@
+<?php
+
+namespace monoformat {
+
+include_once("monoformat_bithelpers.php");
+
+trait FlagStruct {
+    public static function fromJSON(array $json) {
+        $myClass = static::class;
+        $reflect = new \ReflectionClass($myClass);
+        $properties = $reflect->getProperties(\ReflectionProperty::IS_PUBLIC);
+        $result = new $myClass();
+        foreach ($properties as $property) {
+            $name = $property->getName();
+            if (array_key_exists($name, $json)) {
+                $result->$name = (bool) $json[$name];
+            }
+        }
+        return $result;
+    }
+
+    public function toJSON(): array {
+        $result = [];
+        $myClass = static::class;
+        $reflect = new \ReflectionClass($myClass);
+        $properties = $reflect->getProperties(\ReflectionProperty::IS_PUBLIC);
+        foreach ($properties as $property) {
+            $name = $property->getName();
+            $result[$name] = $this->$name;
+        }
+        return $result;
+    }
+}
+
+enum SectionType : int {
+    case AlwaysDrawn = 1;
+    case TimeBasedDrawn = 2;
+    case MultiTimeBasedDrawn = 3;
+    case ExpiryDate = 31;
+    case CustomFont = 32;
+
+    public static function fromName(string $name): SectionType {
+        foreach (self::cases() as $case) {
+            if ($case->name === $name) {
+                return $case;
+            }
+        }
+        throw new \ValueError("$name is not a valid backing value for enum " . self::class);
+    }
+}
+
+enum ElementType : int {
+    case Image = 1;
+    case Animation = 2;
+    case HScrollImage = 3;
+    case VScrollImage = 4;
+    case Line = 5;
+    case Box = 6;
+    case ClippedText = 16;
+    case HScrollText = 17;
+    //case VScrollText = 18;
+    case CurrentTime = 32;
+
+    public static function fromName(string $name): SectionType {
+        foreach (self::cases() as $case) {
+            if ($case->name === $name) {
+                return $case;
+            }
+        }
+        throw new \ValueError("$name is not a valid backing value for enum " . self::class);
+    }
+}
+
+class ScrollFlags {
+    use FlagStruct;
+
+    public bool $endless = false;
+    public bool $invertDirection = false;
+    public bool $padBefore = false;
+    public bool $padAfter = false;
+
+    public static function fromBitField(int $bitfield): ScrollFlags {
+        $result = new ScrollFlags();
+        $result->endless = isBitSet($bitfield, 0);
+        $result->invertDirection = isBitSet($bitfield, 1);
+        $result->padBefore = isBitSet($bitfield, 2);
+        $result->padAfter = isBitSet($bitfield, 3);
+        return $result;
+    }
+
+    public function toBitField(): int {
+        $result = 0;
+        maybeSetBit($result, 0, $this->endless);
+        maybeSetBit($result, 1, $this->invertDirection);
+        maybeSetBit($result, 2, $this->padBefore);
+        maybeSetBit($result, 3, $this->padAfter);
+        return $result;
+    }
+}
+
+enum LineStyle : int {
+    case Solid = 0;
+
+    public static function fromName(string $name): SectionType {
+        foreach (self::cases() as $case) {
+            if ($case->name === $name) {
+                return $case;
+            }
+        }
+        throw new \ValueError("$name is not a valid backing value for enum " . self::class);
+    }
+}
+
+class LineFlags {
+    use FlagStruct;
+
+    public bool $dark = false;
+
+    public static function fromBitField(int $bitfield): LineFlags {
+        $result = new LineFlags();
+        $result->dark = isBitSet($bitfield, 0);
+        return $result;
+    }
+
+    public function toBitField(): int {
+        $result = 0;
+        maybeSetBit($result, 0, $this->dark);
+        return $result;
+    }
+}
+
+enum FillPatternStyle : int {
+    case Solid = 0;
+
+    public static function fromName(string $name): SectionType {
+        foreach (self::cases() as $case) {
+            if ($case->name === $name) {
+                return $case;
+            }
+        }
+        throw new \ValueError("$name is not a valid backing value for enum " . self::class);
+    }
+}
+
+class FillFlags {
+    use FlagStruct;
+
+    public bool $dark = false;
+
+    public static function fromBitField(int $bitfield): FillFlags {
+        $result = new FillFlags();
+        $result->dark = isBitSet($bitfield, 0);
+        return $result;
+    }
+
+    public function toBitField(): int {
+        $result = 0;
+        maybeSetBit($result, 0, $this->dark);
+        return $result;
+    }
+}
+
+class TextFlags {
+    use FlagStruct;
+
+    public bool $dark = false;
+    public bool $autoWordWrap = false;
+
+    public static function fromBitField(int $bitfield): TextFlags {
+        $result = new TextFlags();
+        $result->dark = isBitSet($bitfield, 0);
+        $result->autoWordWrap = isBitSet($bitfield, 1);
+        return $result;
+    }
+
+    public function toBitField(): int {
+        $result = 0;
+        maybeSetBit($result, 0, $this->dark);
+        maybeSetBit($result, 1, $this->autoWordWrap);
+        return $result;
+    }
+}
+
+class TimeDisplayFlags {
+    use FlagStruct;
+
+    public bool $use12h = false;
+    public bool $showHours = false;
+    public bool $showMinutes = false;
+    public bool $showSeconds = false;
+
+    public static function fromBitField(int $bitfield): TimeDisplayFlags {
+        $result = new TimeDisplayFlags();
+        $result->use12h = isBitSet($bitfield, 0);
+        $result->showHours = isBitSet($bitfield, 1);
+        $result->showMinutes = isBitSet($bitfield, 2);
+        $result->showSeconds = isBitSet($bitfield, 3);
+        return $result;
+    }
+
+    public function toBitField(): int {
+        $result = 0;
+        maybeSetBit($result, 0, $this->use12h);
+        maybeSetBit($result, 1, $this->showHours);
+        maybeSetBit($result, 2, $this->showMinutes);
+        maybeSetBit($result, 3, $this->showSeconds);
+        return $result;
+    }
+}
+
+} // namespace monoformat
+
+?>

backup/gpn/schedule.php

@@ -0,0 +1,181 @@
+<?php
+
+include_once("monoformat_schema.php");
+include_once("monoformat_structured.php");
+
+function replaceTalkInfo($str, $talks) {
+    return preg_replace_callback("/\\$\\{([^}]*)\\}/", function ($matches) use ($talks) {
+        if (str_contains($matches[1], ".")) {
+            [$id, $what] = explode(".", $matches[1], 2);
+            $id = (int) $id;
+            if ($id < 0 || $id >= count($talks)) {
+                return "";
+            }
+            $talk = $talks[$id];
+            if (array_key_exists($what, $talk)) {
+                return $talk[$what];
+            } else {
+                return "";
+            }
+        } else {
+            return "";
+        }
+    }, $str);
+}
+
+$roomMapping = [
+    "1020ba76eb04" => "a873f07f-4ab2-57ea-9183-99b187e8b0cf", // Medientheater
+    "001122334466" => "0273ef15-d23a-5413-9c74-3edc092b6ee8", // Kubus
+    "001122334477" => "80d66dbe-d978-57b5-86e2-b3d480136b9a", // Vortragssaal
+];
+
+if (!isset($_GET["mac"]) or !array_key_exists($_GET["mac"], $roomMapping)) {
+    /* We didn't find this device in the mapping, so let's just
+     * send a default file to the user.
+     */
+    Header("Content-Type: application/octet-stream");
+    readfile(dirname(__FILE__) . "/noroom.bin");
+    exit(0);
+}
+
+$roomGUID = strtolower($roomMapping[$_GET["mac"]]);
+
+$pretalx = json_decode(file_get_contents("https://cfp.gulas.ch/gpn24/schedule/export/schedule.json"), true);
+
+$roomName = null;
+foreach ($pretalx["schedule"]["conference"]["rooms"] as $room) {
+    $thisRoomGUID = strtolower($room["guid"]);
+    if ($thisRoomGUID === $roomGUID) {
+        $roomName = $room["name"];
+        break;
+    }
+}
+if ($roomName === null) {
+    die("Room not found!");
+}
+
+$talks = [];
+$now = new DateTimeImmutable("now");
+
+foreach ($pretalx["schedule"]["conference"]["days"] as $day) {
+    if (!array_key_exists($roomName, $day["rooms"])) {
+        continue;
+    }
+    $roomTalks = $day["rooms"][$roomName];
+    foreach ($roomTalks as $t) {
+        [$h, $m] = explode(":", $t["duration"]);
+        $duration = $h * 3600 + $m * 60;
+        $duration = DateInterval::createFromDateString("$duration sec");
+        $speakers = [];
+        foreach ($t["persons"] as $person) {
+            array_push($speakers, $person["name"]);
+        }
+        $talkBegin = new DateTimeImmutable($t["date"]);
+        $talkEnd = $talkBegin->add($duration);
+        if ($talkEnd < $now) {
+            continue;
+        }
+        $talk = [
+            "Time" => $talkBegin->format("H:i"),
+            "Duration" => $duration->format("H:i"),
+            "Persons" => implode(", ", $speakers),
+            "Title" => $t["title"],
+            "_start" => $talkBegin,
+            "_end" => $talkEnd,
+        ];
+        array_push($talks, $talk);
+    }
+}
+
+$template = file_get_contents(dirname(__FILE__) . "/template.bin");
+$template = monoformat\parseFile($template);
+
+if (count($template->sections) != 1 or $template->sections[0]->sectionType() != monoformat\SectionType::AlwaysDrawn) {
+    die("Invalid section in template file");
+}
+
+$elements = [];
+for ($i = 0; $i < $template->sections[0]->elementCount(); ++$i) {
+    array_push($elements, $template->sections[0]->elementAt($i));
+}
+
+$end_template = file_get_contents(dirname(__FILE__) . "/endscreen.bin");
+$end_template = monoformat\parseFile($end_template);
+
+if (count($end_template->sections) != 1 or $end_template->sections[0]->sectionType() != monoformat\SectionType::AlwaysDrawn) {
+    die("Invalid section in end screen template file");
+}
+
+$end_elements = [];
+for ($i = 0; $i < $end_template->sections[0]->elementCount(); ++$i) {
+    array_push($end_elements, $end_template->sections[0]->elementAt($i));
+}
+
+$n = 42;
+$last = false;
+if ($n > count($talks)) {
+    $n = count($talks);
+    $last = true;
+}
+
+$lastEnd = 0;
+$outputFile = new monoformat\File();
+if (!$last) {
+    $section = new monoformat\ExpiryDateSection();
+    $section->setExpiryDate($talks[$n - 1]["_end"]->getTimestamp());
+    array_push($outputFile->sections, $section);
+}
+for ($i = 0; $i < $n; ++$i) {
+    $subTalks = array_slice($talks, $i);
+    $end = $subTalks[0]["_end"]->getTimestamp();
+    $section = new monoformat\TimeBasedDrawnSection();
+    $section->setDrawOnFront(true);
+    $section->setDrawOnBack(true);
+    $section->setClearBeforeDrawing(true);
+    $section->setStartTimestamp($lastEnd);
+    $section->setEndTimestamp($end);
+    foreach ($elements as $element) {
+        if ($element->elementType() == monoformat\ElementType::ClippedText) {
+            $x = $element->x();
+            $y = $element->y();
+            $width = $element->width();
+            $height = $element->height();
+            $textFlags = $element->textFlags();
+            $fontIndex = $element->fontIndex();
+            $text = replaceTalkInfo($element->text(), $subTalks);
+            $element = new monoformat\ClippedTextElement($x, $y, $width, $height, $textFlags, $fontIndex, $text);
+        } else if ($element->elementType() == monoformat\ElementType::HScrollText) {
+            $x = $element->x();
+            $y = $element->y();
+            $width = $element->width();
+            $height = $element->height();
+            $textFlags = $element->textFlags();
+            $flags = $element->flags();
+            $scrollSpeed = $element->scrollSpeed();
+            $fontIndex = $element->fontIndex();
+            $text = replaceTalkInfo($element->text(), $subTalks) . "  ";
+            $element = new monoformat\HScrollTextElement($x, $y, $width, $height, $textFlags, $flags, $scrollSpeed, $fontIndex, $text);
+        }
+        $section->appendElement($element);
+    }
+    array_push($outputFile->sections, $section);
+    $lastEnd = $end;
+}
+if ($last) {
+    $section = new monoformat\TimeBasedDrawnSection();
+    $section->setDrawOnFront(true);
+    $section->setDrawOnBack(true);
+    $section->setClearBeforeDrawing(true);
+    $section->setStartTimestamp($lastEnd);
+    // Set this far enough in the future that it doesn't matter
+    $section->setEndTimestamp($lastEnd + 86400 * 300);
+    foreach ($end_elements as $element) {
+        $section->appendElement($element);
+    }
+    array_push($outputFile->sections, $section);
+}
+
+Header("Content-Type: application/octet-stream");
+print(monoformat\serializeFile($outputFile));
+
+?>

backup/index.html

@@ -0,0 +1,83 @@
+
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+  <title>Busanzeiger Paint</title>
+  <link rel="stylesheet" href="styles.css">
+  <script src="https://cdn.jsdelivr.net/npm/omggif@1.0.10/omggif.min.js"></script>
+  <script src="alphabet-extended.js"></script>
+  <script src="binfmt.js"></script>
+</head>
+<body>
+<h1>Busanzeiger Paint</h1>
+
+<div id="modeToggle">
+  <label><input type="radio" name="mode" value="image" checked> Image Mode</label>
+  <label><input type="radio" name="mode" value="text"> Text Mode</label>
+  <label style="margin-left: 20px;"><input type="checkbox" id="animationCreation"> Animation Creation</label>
+  <label style="margin-left: 20px;">
+    Duration (seconds): <input type="number" id="animationDuration" min="0.1" max="60" step="0.1" value="3.0" style="width: 60px;">
+    <button id="revertDuration" title="Unlock and recalculate from frame count">↻</button>
+  </label>
+</div>
+
+<div id="dropzone">Drag and drop image(s) here or click to upload</div>
+
+<div id="controls">
+  <input type="file" id="upload" accept="image/*" style="display:none;" />
+  <button id="invert">Invert</button>
+  <button id="dither">Dither: OFF</button>
+  <button id="export">Prepare Export</button>
+  <button id="downloadBinary">Download Binary</button>
+  <button id="draw">Draw</button>
+  <button id="erase">Erase</button>
+  <label>
+    Brush:
+    <select id="brushSize">
+      <option value="1" selected>1px</option>
+      <option value="2">2px</option>
+      <option value="4">4px</option>
+      <option value="6">6px</option>
+    </select>
+  </label>
+  <button id="reset">Reset</button>
+</div>
+
+<div id="frameControls" style="display: none; margin-top: 10px; display: flex; gap: 10px; align-items: center; justify-content: center;">
+  <button id="prevFrame">← Prev Frame</button>
+  <button id="playStop">▶ Play</button>
+  <span id="frameCounter"></span>
+  <button id="nextFrame">Next Frame →</button>
+  <button id="addEmptyFrame" style="display: none;">+ Empty Frame</button>
+  <button id="duplicateFrame" style="display: none;">+ Duplicate Frame</button>
+  <button id="deleteFrame" style="display: none;">🗑 Delete Frame</button>
+</div>
+
+<div id="textInputArea">
+  <label>Scrolling Text:<br>
+    <textarea id="scrollText" rows="4" cols="40"></textarea>
+  </label>
+  <label>Speed: <input type="number" id="scrollSpeed" min="0" max="63" value="4"></label>
+  <label><input type="checkbox" id="scrollRight"> Scroll Right</label>
+  <label><input type="checkbox" id="scrollWrap" checked> Wrap Around</label>
+</div>
+
+<div id="matrix"></div>
+
+<form action="upload.php" method="post">
+  <textarea id="array_output" name="array_output" rows="4" cols="50"></textarea>
+  <textarea id="scrolls_output" name="scrolls" rows="4" cols="50" style="display:none;"></textarea>
+  <br>
+  Filename: <input type="text" id="fileName" name="fileName">
+  <br>
+  Passwort: <input type="password" id="password" name="password">
+  <button type="submit">Speichern</button>
+</form>
+
+<script src="app.js"></script>
+
+</body>
+</html>
+

backup/live.php

@@ -0,0 +1,215 @@
+<?php
+session_start();
+
+define('PASSWORD',    'grund_cttue_gesetz');
+define('FILES_DIR',   __DIR__ . '/avj2305');
+define('ACTIVE_FILE', __DIR__ . '/active.txt');
+
+// =============================================================================
+// HELPERS
+// =============================================================================
+
+function redirect(string $url): never {
+    header('Location: ' . $url);
+    exit;
+}
+
+function require_auth(): void {
+    if (empty($_SESSION['auth'])) redirect('?login');
+}
+
+function get_active(): string {
+    if (!file_exists(ACTIVE_FILE)) return '';
+    $v = trim(file_get_contents(ACTIVE_FILE));
+    return $v !== '' ? $v : '';
+}
+
+function set_active(string $filename): void {
+    file_put_contents(ACTIVE_FILE, $filename);
+}
+
+function get_bin_files(): array {
+    $files = glob(FILES_DIR . '/*.bin');
+    return $files ? array_map('basename', $files) : [];
+}
+
+function safe_filename(string $name): bool {
+    return $name === basename($name)
+        && str_ends_with($name, '.bin')
+        && !str_contains($name, "\0");
+}
+
+function has_png(string $bin_basename): bool {
+    $png = substr($bin_basename, 0, -4) . '.png';
+    return file_exists(FILES_DIR . '/' . $png);
+}
+
+function png_path(string $bin_basename): string {
+    return FILES_DIR . '/' . substr($bin_basename, 0, -4) . '.png';
+}
+
+// =============================================================================
+// ACTIONS  (POST handlers - redirect, never render)
+// =============================================================================
+
+function action_login(): never {
+    if (hash_equals(PASSWORD, $_POST['password'] ?? '')) {
+        $_SESSION['auth'] = true;
+        redirect('?edit');
+    }
+    redirect('?login&err=1');
+}
+
+function action_set_file(): never {
+    require_auth();
+    $f = $_POST['file'] ?? '';
+    if (safe_filename($f) && file_exists(FILES_DIR . '/' . $f)) {
+        set_active($f);
+    }
+    redirect('?edit');
+}
+
+// =============================================================================
+// RENDERERS  (GET handlers - output HTML, never redirect)
+// =============================================================================
+
+function render_login(): never {
+    $err = !empty($_GET['err']); ?>
+<!DOCTYPE html>
+<html lang="en">
+<head><meta charset="utf-8"><title>Login</title>
+<style>
+  body{font:14px monospace;display:flex;align-items:center;justify-content:center;height:100vh;margin:0;background:#111;color:#eee}
+  form{display:flex;flex-direction:column;gap:8px;width:220px}
+  input[type=password]{padding:6px;background:#222;border:1px solid #555;color:#eee}
+  button{padding:6px;background:#444;border:none;color:#eee;cursor:pointer}
+  button:hover{background:#555}
+  .err{color:#f66;font-size:12px}
+</style>
+</head>
+<body>
+<form method="post" action="?login">
+  <label>Password</label>
+  <input type="password" name="password" autofocus>
+  <button type="submit">Login</button>
+  <?php if ($err): ?><span class="err">Wrong password.</span><?php endif; ?>
+</form>
+</body></html>
+<?php exit; }
+
+function render_edit(): never {
+    require_auth();
+    $files  = get_bin_files();
+    $active = get_active(); ?>
+<!DOCTYPE html>
+<html lang="en">
+<head><meta charset="utf-8"><title>Select File</title>
+<style>
+  body{font:14px monospace;background:#111;color:#eee;padding:24px;margin:0}
+  h2{margin:0 0 16px}
+  ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px}
+  li form{margin:0}
+  .row{display:flex;align-items:center;gap:10px}
+  button{padding:6px 12px;background:#333;border:1px solid #555;color:#eee;cursor:pointer;flex:1;text-align:left}
+  button:hover{background:#444}
+  button.active{border-color:#6af;color:#6af}
+  .thumb{width:480px;height:270px;object-fit:cover;border:1px solid #444;background:#222;flex-shrink:0}
+  .nothumb{width:64px;height:64px;flex-shrink:0}
+  .none{color:#888}
+</style>
+</head>
+<body>
+<h2>Live file selector</h2>
+<p>Active: <strong><?= $active !== '' ? htmlspecialchars($active) : '<span class="none">none</span>' ?></strong></p>
+<?php if ($files): ?>
+<ul>
+<?php foreach ($files as $f): ?>
+  <li>
+    <form method="post" action="?edit">
+      <div class="row">
+        <?php if (has_png($f)): ?>
+          <img class="thumb" src="?img=<?= urlencode($f) ?>" alt="">
+        <?php else: ?>
+          <div class="nothumb"></div>
+        <?php endif; ?>
+        <input type="hidden" name="file" value="<?= htmlspecialchars($f) ?>">
+        <button type="submit"<?= $f === $active ? ' class="active"' : '' ?>><?= htmlspecialchars($f) ?></button>
+      </div>
+    </form>
+  </li>
+<?php endforeach; ?>
+</ul>
+<?php else: ?>
+<p class="none">No .bin files found in avj2305/</p>
+<?php endif; ?>
+</body></html>
+<?php exit; }
+
+// =============================================================================
+// FILE SERVER  (default route)
+// =============================================================================
+
+function serve_png(): never {
+    require_auth();
+    $f = $_GET['img'] ?? '';
+    if (!safe_filename($f)) {
+        http_response_code(400); exit('Invalid filename.');
+    }
+    $path = png_path($f);
+    if (!file_exists($path)) {
+        http_response_code(404); exit('No preview.');
+    }
+    header('Content-Type: image/png');
+    header('Content-Length: ' . filesize($path));
+    readfile($path);
+    exit;
+}
+
+function serve_active_file(): never {
+    $active = get_active();
+
+    if ($active === '') {
+        http_response_code(404); exit('No active file set.');
+    }
+    if (!safe_filename($active)) {
+        http_response_code(500); exit('Invalid filename.');
+    }
+
+    $path = FILES_DIR . '/' . $active;
+
+    if (!file_exists($path)) {
+        http_response_code(404); exit('File not found.');
+    }
+
+    header('Content-Type: application/octet-stream');
+    header('Content-Disposition: inline; filename="' . addslashes($active) . '"');
+    header('Content-Length: ' . filesize($path));
+    readfile($path);
+    exit;
+}
+
+
+// =============================================================================
+// ROUTES
+// =============================================================================
+//
+//   GET  /live.php           -> serve active .bin file
+//   GET  /live.php?login    -> login page
+//   POST /live.php?login    -> process login
+//   GET  /live.php?edit     -> file picker             [auth required]
+//   POST /live.php?edit     -> set active file         [auth required]
+//   GET  /live.php?img=x.bin -> serve x.png preview   [auth required]
+//
+// =============================================================================
+
+$method = $_SERVER['REQUEST_METHOD'];
+$route  = array_key_first($_GET) ?? '';
+
+match (true) {
+    $method === 'POST' && $route === 'login' => action_login(),
+    $method === 'POST' && $route === 'edit'  => action_set_file(),
+    $method === 'GET'  && $route === 'login' => render_login(),
+    $method === 'GET'  && $route === 'edit'  => render_edit(),
+    $method === 'GET'  && $route === 'img'   => serve_png(),
+    default                                  => serve_active_file(),
+};

backup/schedule_bool.php

@@ -0,0 +1,203 @@
+<?php
+
+namespace monoformat {
+
+enum SectionType : int {
+    case AlwaysDrawn = 1;
+    case TimeBasedDrawn = 2;
+    case CustomFont = 32;
+}
+
+enum ElementType : int {
+    case Image = 1;
+    case Animation = 2;
+    case HScrollImage = 3;
+    case VScrollImage = 4;
+    case Line = 5;
+    case ClippedText = 16;
+    case HScrollText = 17;
+    case CurrentTime = 32;
+}
+
+enum LineStyle : int {
+    case Solid = 0;
+}
+
+class Element {
+    public function serialize() {
+        return "";
+    }
+}
+
+class HScrollTextElement extends Element {
+    public $x = 0;
+    public $y = 0;
+    public $width = 0;
+    public $height = 0;
+    public $flags = 0;
+    public $scrollSpeed = 0;
+    public $fontIndex = 0;
+    public $text = "";
+
+    public function serialize() {
+        $len = strlen($this->text);
+        $result = pack("vvvvvCCvv",
+                       17,
+                       $this->x,
+                       $this->y,
+                       $this->width,
+                       $this->height,
+                       $this->flags,
+                       $this->scrollSpeed,
+                       $this->fontIndex,
+                       $len);
+        $result .= (string) $this->text;
+        if ($len % 4 != 0) {
+            $n = 4 - ($len % 4);
+            for ($i = 0; $i < $n; ++$i) {
+                $result .= chr(0);
+            }
+        }
+        return $result;
+    }
+}
+
+class CurrentTimeElement extends Element {
+    public $x = 0;
+    public $y = 0;
+    public $width = 0;
+    public $height = 0;
+    public $fontIndex = 0;
+    public $utcOffset = 0;
+    public $flags = 0;
+
+    public function serialize() {
+        $result = pack("vvvvvvvv",
+                       32,
+                       $this->x,
+                       $this->y,
+                       $this->width,
+                       $this->height,
+                       $this->fontIndex,
+                       $this->utcOffset,
+                       $this->flags);
+        return $result;
+    }
+}
+
+class Section {
+    public function serialize() {
+        return "";
+    }
+}
+
+class AlwaysDrawnSection extends Section {
+    public $drawOnFront = false;
+    public $drawOnBack = false;
+    public $clearBeforeDrawing = false;
+    public $elements = [];
+
+    public function serialize() {
+        $flags = 0;
+        if ($this->drawOnFront) {
+            $flags |= 0x01;
+        }
+        if ($this->drawOnBack) {
+            $flags |= 0x02;
+        }
+        if ($this->clearBeforeDrawing) {
+            $flags |= 0x04;
+        }
+        $inner = pack("vv", $flags, count($this->elements));
+        foreach ($this->elements as $element) {
+            $inner .= $element->serialize();
+        }
+        $len = strlen($inner) + 4;
+        $len = substr(pack("V", $len), 0, 3);
+        return pack("C", 1) . $len . $inner;
+    }
+}
+
+class File {
+    public $sections = [];
+
+    public function serialize() {
+        $nSections = count($this->sections);
+        $result = "\xAF\x7E\x2B\x63";
+        $result .= pack("Vvv", 1, $nSections, 0);
+        foreach ($this->sections as $section) {
+            $result .= $section->serialize();
+        }
+        return $result;
+    }
+}
+
+} // namespace monoformat
+
+namespace {
+
+$roomName= "BOOL";
+
+$data = json_decode(file_get_contents("https://cfp.cttue.de/tdf5/schedule/export/schedule.json"), true);
+$talks = [];
+$now = new DateTimeImmutable("now");
+foreach ($data["schedule"]["conference"]["days"] as $day) {
+    foreach ($day["rooms"][$roomName] as $t) {
+        [$h, $m] = explode(":", $t["duration"]);
+        $duration = $h * 3600 + $m * 60;
+        $duration = DateInterval::createFromDateString("$duration sec");
+        $talk = [
+            "date" => new DateTimeImmutable($t["date"]),
+            "duration" => $duration,
+            "title" => $t["title"],
+        ];
+        $talkEnd = $talk["date"]->add($talk["duration"]);
+        if ($talkEnd < $now) {
+            continue;
+        }
+        if ($talk["date"] > $now && count($talks) > 2) {
+            break;
+        }
+        array_push($talks, $talk);
+    }
+}
+
+$elements = [];
+
+function putText($x, $y, $width, $height, $text) {
+    global $elements;
+
+    $e = new monoformat\HScrollTextElement();
+    $e->x = $x;
+    $e->y = $y;
+    $e->width = $width;
+    $e->height = $height;
+    $e->flags = 0;
+    $e->scrollSpeed = 15;
+    $e->fontIndex = 0;
+    $e->text = $text;
+    array_push($elements, $e);
+}
+
+$i = 0;
+foreach ($talks as $talk) {
+    putText(10, $i * 20, 25, 20, $talk["date"]->format("H:i"));
+    putText(35, $i * 20, 85, 20, $talk["title"]);
+    ++$i;
+}
+
+$section = new monoformat\AlwaysDrawnSection();
+$section->drawOnFront = true;
+$section->drawOnBack = true;
+$section->clearBeforeDrawing = true;
+$section->elements = $elements;
+
+$file = new monoformat\File();
+array_push($file->sections, $section);
+
+Header("Content-Type: application/octet-stream");
+
+print($file->serialize());
+} // global
+
+?>

backup/schedule_enum.php

@@ -0,0 +1,203 @@
+<?php
+
+namespace monoformat {
+
+enum SectionType : int {
+    case AlwaysDrawn = 1;
+    case TimeBasedDrawn = 2;
+    case CustomFont = 32;
+}
+
+enum ElementType : int {
+    case Image = 1;
+    case Animation = 2;
+    case HScrollImage = 3;
+    case VScrollImage = 4;
+    case Line = 5;
+    case ClippedText = 16;
+    case HScrollText = 17;
+    case CurrentTime = 32;
+}
+
+enum LineStyle : int {
+    case Solid = 0;
+}
+
+class Element {
+    public function serialize() {
+        return "";
+    }
+}
+
+class HScrollTextElement extends Element {
+    public $x = 0;
+    public $y = 0;
+    public $width = 0;
+    public $height = 0;
+    public $flags = 0;
+    public $scrollSpeed = 0;
+    public $fontIndex = 0;
+    public $text = "";
+
+    public function serialize() {
+        $len = strlen($this->text);
+        $result = pack("vvvvvCCvv",
+                       17,
+                       $this->x,
+                       $this->y,
+                       $this->width,
+                       $this->height,
+                       $this->flags,
+                       $this->scrollSpeed,
+                       $this->fontIndex,
+                       $len);
+        $result .= (string) $this->text;
+        if ($len % 4 != 0) {
+            $n = 4 - ($len % 4);
+            for ($i = 0; $i < $n; ++$i) {
+                $result .= chr(0);
+            }
+        }
+        return $result;
+    }
+}
+
+class CurrentTimeElement extends Element {
+    public $x = 0;
+    public $y = 0;
+    public $width = 0;
+    public $height = 0;
+    public $fontIndex = 0;
+    public $utcOffset = 0;
+    public $flags = 0;
+
+    public function serialize() {
+        $result = pack("vvvvvvvv",
+                       32,
+                       $this->x,
+                       $this->y,
+                       $this->width,
+                       $this->height,
+                       $this->fontIndex,
+                       $this->utcOffset,
+                       $this->flags);
+        return $result;
+    }
+}
+
+class Section {
+    public function serialize() {
+        return "";
+    }
+}
+
+class AlwaysDrawnSection extends Section {
+    public $drawOnFront = false;
+    public $drawOnBack = false;
+    public $clearBeforeDrawing = false;
+    public $elements = [];
+
+    public function serialize() {
+        $flags = 0;
+        if ($this->drawOnFront) {
+            $flags |= 0x01;
+        }
+        if ($this->drawOnBack) {
+            $flags |= 0x02;
+        }
+        if ($this->clearBeforeDrawing) {
+            $flags |= 0x04;
+        }
+        $inner = pack("vv", $flags, count($this->elements));
+        foreach ($this->elements as $element) {
+            $inner .= $element->serialize();
+        }
+        $len = strlen($inner) + 4;
+        $len = substr(pack("V", $len), 0, 3);
+        return pack("C", 1) . $len . $inner;
+    }
+}
+
+class File {
+    public $sections = [];
+
+    public function serialize() {
+        $nSections = count($this->sections);
+        $result = "\xAF\x7E\x2B\x63";
+        $result .= pack("Vvv", 1, $nSections, 0);
+        foreach ($this->sections as $section) {
+            $result .= $section->serialize();
+        }
+        return $result;
+    }
+}
+
+} // namespace monoformat
+
+namespace {
+
+$roomName= "ENUM";
+
+$data = json_decode(file_get_contents("https://cfp.cttue.de/tdf5/schedule/export/schedule.json"), true);
+$talks = [];
+$now = new DateTimeImmutable("now");
+foreach ($data["schedule"]["conference"]["days"] as $day) {
+    foreach ($day["rooms"][$roomName] as $t) {
+        [$h, $m] = explode(":", $t["duration"]);
+        $duration = $h * 3600 + $m * 60;
+        $duration = DateInterval::createFromDateString("$duration sec");
+        $talk = [
+            "date" => new DateTimeImmutable($t["date"]),
+            "duration" => $duration,
+            "title" => $t["title"],
+        ];
+        $talkEnd = $talk["date"]->add($talk["duration"]);
+        if ($talkEnd < $now) {
+            continue;
+        }
+        if ($talk["date"] > $now && count($talks) > 2) {
+            break;
+        }
+        array_push($talks, $talk);
+    }
+}
+
+$elements = [];
+
+function putText($x, $y, $width, $height, $text) {
+    global $elements;
+
+    $e = new monoformat\HScrollTextElement();
+    $e->x = $x;
+    $e->y = $y;
+    $e->width = $width;
+    $e->height = $height;
+    $e->flags = 0;
+    $e->scrollSpeed = 15;
+    $e->fontIndex = 0;
+    $e->text = $text;
+    array_push($elements, $e);
+}
+
+$i = 0;
+foreach ($talks as $talk) {
+    putText(10, $i * 20, 25, 20, $talk["date"]->format("H:i"));
+    putText(35, $i * 20, 85, 20, $talk["title"]);
+    ++$i;
+}
+
+$section = new monoformat\AlwaysDrawnSection();
+$section->drawOnFront = true;
+$section->drawOnBack = true;
+$section->clearBeforeDrawing = true;
+$section->elements = $elements;
+
+$file = new monoformat\File();
+array_push($file->sections, $section);
+
+Header("Content-Type: application/octet-stream");
+
+print($file->serialize());
+} // global
+
+?>

backup/show.php

@@ -0,0 +1,53 @@
+<?php
+
+$path = 'out';
+$files = scandir($path);
+$binaryFiles = [];
+
+foreach($files as $file) {
+    if(str_ends_with($file, 'bin')) {
+        $binaryFiles[] = $file;
+    }
+}
+
+$current = date('i') % sizeof($binaryFiles);
+
+$downloadName = $binaryFiles[$current];
+$filePath = __DIR__ . '/out/' . $downloadName;
+if (!is_file($filePath) || !is_readable($filePath)) {
+    http_response_code(404);
+    echo 'File not found.';
+    echo $filePath;
+    exit;
+}
+
+header('Content-Description: File Transfer');
+header('Content-Type: application/octet-stream');   // generic binary MIME
+header('Content-Disposition: attachment; filename="' . basename($downloadName) . '"');
+header('Content-Transfer-Encoding: binary');
+header('Expires: 0');
+header('Cache-Control: must-revalidate, private');
+header('Pragma: public');
+
+header('Content-Length: ' . filesize($filePath));
+
+while (ob_get_level()) {
+    ob_end_clean();
+}
+
+$chunkSize = 8192;
+$handle = fopen($filePath, 'rb');
+if ($handle === false) {
+    http_response_code(500);
+    echo 'Unable to open file.';
+    exit;
+}
+
+while (!feof($handle)) {
+    // Output a chunk and flush it immediately
+    echo fread($handle, $chunkSize);
+    flush(); // push to client
+}
+fclose($handle);
+exit;
+?>

backup/styles.css

@@ -0,0 +1,84 @@
+body {
+  font-family: sans-serif;
+  background: #111;
+  color: white;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+}
+
+canvas {
+  image-rendering: pixelated;
+  margin-top: 20px;
+}
+
+#matrix {
+  display: grid;
+  grid-template-columns: repeat(var(--col-count, 10), 1fr);
+  grid-gap: 1px;
+  margin-top: 20px;
+}
+
+.dot {
+  width: 10px;
+  height: 10px;
+  background: #222;
+  border-radius: 50%;
+}
+
+.dot.on {
+  background: orange;
+}
+
+#dropzone {
+  border: 2px dashed #555;
+  padding: 20px;
+  margin-top: 20px;
+  text-align: center;
+  width: 300px;
+  cursor: pointer;
+}
+
+#controls {
+  margin-top: 10px;
+  display: flex;
+  gap: 10px;
+  flex-wrap: wrap;
+  justify-content: center;
+}
+
+#textInputArea {
+  display: none;
+  margin-top: 10px;
+}
+
+input, textarea, select {
+  background: #222;
+  color: white;
+  border: 1px solid #555;
+  padding: 5px;
+  border-radius: 4px;
+}
+
+select option {
+  background: #222;
+  color: white;
+}
+
+button {
+  background: #333;
+  color: white;
+  border: 1px solid #555;
+  padding: 5px 10px;
+  border-radius: 4px;
+  cursor: pointer;
+}
+
+button:hover {
+  background: #444;
+}
+
+button.active {
+  background: #f60;
+  border-color: #f60;
+}

backup/upload.php

@@ -0,0 +1,105 @@
+<?php
+
+$width  = 120;
+$height = 60;
+$PASSWORD = "Ky/6lG3kbA>/TM?C(V@S";
+
+// --- Helpers ---
+function setPixel(int $x, int $y, int $width, &$bitmap) {
+    if ($x < 0 || $y < 0) return;
+    $index = $y * $width + $x;
+    $byteIdx = intdiv($index, 8);
+    $bitPos  = $index % 8;
+    $bitmap[$byteIdx] |= (1 << $bitPos);
+}
+
+function createImageBitmap(array $pixelsOn, int $width, int $height): array {
+    $totalBits = $width * $height;
+    $bitmapSize = intdiv($totalBits + 7, 8);
+    $bitmap = array_fill(0, $bitmapSize, 0);
+    foreach ($pixelsOn as [$x, $y]) {
+        setPixel($x, $y, $width, $bitmap);
+    }
+    return $bitmap;
+}
+
+function packBitmap(array $bitmap): string {
+    return implode('', array_map(fn($b) => pack('C', $b), $bitmap));
+}
+
+function createImageObject(int $width, int $height, array $bitmap, int $xOffset = 0, int $yOffset = 0): string {
+    $payload  = pack('C', $width);
+    $payload .= pack('C', $height);
+    $payload .= packBitmap($bitmap);
+    $header = pack('C*', 0x01, $xOffset, $yOffset); // Type = 1
+    return $header . $payload;
+}
+
+function createScrollObject(int $xOffset, int $yOffset, int $width, int $height, int $contentWidth, array $bitmap, int $speed = 0, bool $directionRight = false, bool $wrap = true): string {
+    $CW = pack('v', $contentWidth);
+    $UF = (($wrap ? 1 : 0) << 7) | (($directionRight ? 1 : 0) << 6) | ($speed & 0x3F);
+    $payload  = pack('C', $width);
+    $payload .= pack('C', $height);
+    $payload .= $CW;
+    $payload .= pack('C', $UF);
+    $payload .= packBitmap($bitmap);
+    $header = pack('C*', 0x03, $xOffset, $yOffset);
+    return $header . $payload;
+}
+
+function createBlob(array $objects, string $fileName) {
+    $blob = '';
+    $blob .= pack('C*', 0x42, 0x4E, 0x17, 0xEE);
+    $blob .= pack('C', count($objects));
+    foreach ($objects as $obj) {
+        $blob .= $obj;
+    }
+    file_put_contents($fileName, $blob);
+    echo "Blob written to {$fileName} (" . strlen($blob) . " bytes)\n";
+}
+
+// --- Validation ---
+if (!isset($_POST['password'])) die("password missing.");
+if (htmlspecialchars($_POST['password']) !== htmlspecialchars($PASSWORD)) die("wrong password.");
+
+// --- Determine mode ---
+$mode = $_POST['mode'] ?? 'image';
+$objects = [];
+$fileName = 'out/' . $_POST['fileName'] . '.bin' ?? 'out/' .'output.bin';
+
+mkdir('out/');
+// --- Handle Image Mode ---
+if ($mode === 'image') {
+    $pixelsOn = json_decode($_POST['array_output'] ?? '[]', true);
+    if (!is_array($pixelsOn)) die("invalid or missing array_output for image mode.");
+    $bitmap = createImageBitmap($pixelsOn, $width, $height);
+    $objects[] = createImageObject($width, $height, $bitmap, 0, 0);
+}
+
+// --- Handle Text Mode (scrolling text) ---
+elseif ($mode === 'text') {
+    $scrolls = json_decode($_POST['scrolls'] ?? '[]', true);
+    if (!is_array($scrolls) || empty($scrolls)) die("invalid or missing scrolls for text mode.");
+
+    foreach ($scrolls as $scroll) {
+        $pixelsOn = $scroll['pixelsOn'] ?? [];
+        $bitmap = createImageBitmap($pixelsOn, $scroll['contentWidth'], $scroll['height']);
+        $objects[] = createScrollObject(
+            $scroll['x'] ?? 0,
+            $scroll['y'] ?? 0,
+            $scroll['width'] ?? $width,
+            $scroll['height'] ?? 8,
+            $scroll['contentWidth'] ?? 60,
+            $bitmap,
+            $scroll['speed'] ?? 0,
+            $scroll['directionRight'] ?? false,
+            $scroll['wrap'] ?? true
+        );
+    }
+}
+
+else {
+    die("unknown mode: {$mode}");
+}
+
+createBlob($objects, $fileName);