套用tsl0922项目

gen/v1.5/js/dithering.js

@@ -0,0 +1,212 @@
+const bwrPalette = [
+  [0, 0, 0, 255],
+  [255, 255, 255, 255],
+  [255, 0, 0, 255]
+]
+
+const bwPalette = [
+  [0, 0, 0, 255],
+  [255, 255, 255, 255],
+]
+
+function dithering(ctx, width, height, threshold, type) {
+  const bayerThresholdMap = [
+    [  15, 135,  45, 165 ],
+    [ 195,  75, 225, 105 ],
+    [  60, 180,  30, 150 ],
+    [ 240, 120, 210,  90 ]
+  ];
+
+  const lumR = [];
+  const lumG = [];
+  const lumB = [];
+  for (let i=0; i<256; i++) {
+    lumR[i] = i*0.299;
+    lumG[i] = i*0.587;
+    lumB[i] = i*0.114;
+  }
+  const imageData = ctx.getImageData(0, 0, width, height);
+
+  const imageDataLength = imageData.data.length;
+
+  // Greyscale luminance (sets r pixels to luminance of rgb)
+  for (let i = 0; i <= imageDataLength; i += 4) {
+    imageData.data[i] = Math.floor(lumR[imageData.data[i]] + lumG[imageData.data[i+1]] + lumB[imageData.data[i+2]]);
+  }
+
+  const w = imageData.width;
+  let newPixel, err;
+
+  for (let currentPixel = 0; currentPixel <= imageDataLength; currentPixel+=4) {
+    if (type === "gray") {
+      const factor = 255 / (threshold - 1);
+      imageData.data[currentPixel] = Math.round(imageData.data[currentPixel] / factor) * factor;
+    } else if (type ==="none") {
+      // No dithering
+      imageData.data[currentPixel] = imageData.data[currentPixel] < threshold ? 0 : 255;
+    } else if (type ==="bayer") {
+      // 4x4 Bayer ordered dithering algorithm
+      var x = currentPixel/4 % w;
+      var y = Math.floor(currentPixel/4 / w);
+      var map = Math.floor( (imageData.data[currentPixel] + bayerThresholdMap[x%4][y%4]) / 2 );
+      imageData.data[currentPixel] = (map < threshold) ? 0 : 255;
+    } else if (type ==="floydsteinberg") {
+      // Floyda€"Steinberg dithering algorithm
+      newPixel = imageData.data[currentPixel] < 129 ? 0 : 255;
+      err = Math.floor((imageData.data[currentPixel] - newPixel) / 16);
+      imageData.data[currentPixel] = newPixel;
+
+      imageData.data[currentPixel       + 4 ] += err*7;
+      imageData.data[currentPixel + 4*w - 4 ] += err*3;
+      imageData.data[currentPixel + 4*w     ] += err*5;
+      imageData.data[currentPixel + 4*w + 4 ] += err*1;
+    } else {
+      // Bill Atkinson's dithering algorithm
+      newPixel = imageData.data[currentPixel] < threshold ? 0 : 255;
+      err = Math.floor((imageData.data[currentPixel] - newPixel) / 8);
+      imageData.data[currentPixel] = newPixel;
+
+      imageData.data[currentPixel       + 4 ] += err;
+      imageData.data[currentPixel       + 8 ] += err;
+      imageData.data[currentPixel + 4*w - 4 ] += err;
+      imageData.data[currentPixel + 4*w     ] += err;
+      imageData.data[currentPixel + 4*w + 4 ] += err;
+      imageData.data[currentPixel + 8*w     ] += err;
+    }
+
+    // Set g and b pixels equal to r
+    imageData.data[currentPixel + 1] = imageData.data[currentPixel + 2] = imageData.data[currentPixel];
+  }
+
+  ctx.putImageData(imageData, 0, 0);
+}
+
+// white: 1, black/red: 0
+function canvas2bytes(canvas, type='bw', invert = false) {
+  const ctx = canvas.getContext("2d");
+  const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
+
+  const arr = [];
+  let buffer = [];
+
+  for (let y = 0; y < canvas.height; y++) {
+    for (let x = 0; x < canvas.width; x++) {
+      const i = (canvas.width * y + x) * 4;
+      if (type !== 'red') {
+        buffer.push(imageData.data[i] === 0 && imageData.data[i+1] === 0 && imageData.data[i+2] === 0 ? 0 : 1);
+      } else {
+        buffer.push(imageData.data[i] > 0 && imageData.data[i+1] === 0 && imageData.data[i+2] === 0 ? 0 : 1);
+      }
+
+      if (buffer.length === 8) {
+        const data = parseInt(buffer.join(''), 2);
+        arr.push(invert ? ~data : data);
+        buffer = [];
+      }
+    }
+  }
+  return arr;
+}
+
+function getColorDistance(rgba1, rgba2) {
+  const [r1, b1, g1] = rgba1;
+  const [r2, b2, g2] = rgba2;
+
+  const rm = (r1 + r2 ) / 2;
+
+  const r = r1 - r2;
+  const g = g1 - g2;
+  const b = b1 - b2;
+
+  return Math.sqrt((2 + rm / 256) * r * r + 4 * g * g + (2 + (255 - rm) / 256) * b * b);
+}
+
+function getNearColor(pixel, palette) {
+  let minDistance = 255 * 255 * 3 + 1;
+  let paletteIndex = 0;
+
+  for (let i = 0; i < palette.length; i++) {
+    const targetColor = palette[i];
+    const distance = getColorDistance(pixel, targetColor);
+    if (distance < minDistance) {
+      minDistance = distance;
+      paletteIndex = i;
+    }
+  }
+
+  return palette[paletteIndex];
+}
+
+
+function getNearColorV2(color, palette) {
+  let minDistanceSquared = 255*255 + 255*255 + 255*255 + 1;
+
+  let bestIndex = 0;
+  for (let i = 0; i < palette.length; i++) {
+      let rdiff = (color[0] & 0xff) - (palette[i][0] & 0xff);
+      let gdiff = (color[1] & 0xff) - (palette[i][1] & 0xff);
+      let bdiff = (color[2] & 0xff) - (palette[i][2] & 0xff);
+      let distanceSquared = rdiff*rdiff + gdiff*gdiff + bdiff*bdiff;
+      if (distanceSquared < minDistanceSquared) {
+          minDistanceSquared = distanceSquared;
+          bestIndex = i;
+      }
+  }
+  return palette[bestIndex];
+
+}
+
+
+function updatePixel(imageData, index, color) {
+  imageData[index] = color[0];
+  imageData[index+1] = color[1];
+  imageData[index+2] = color[2];
+  imageData[index+3] = color[3];
+}
+
+function getColorErr(color1, color2, rate) {
+  const res = [];
+  for (let i = 0; i < 3; i++) {
+    res.push(Math.floor((color1[i] - color2[i]) / rate));
+  }
+  return res;
+}
+
+function updatePixelErr(imageData, index, err, rate) {
+  imageData[index] += err[0] * rate;
+  imageData[index+1] += err[1] * rate;
+  imageData[index+2] += err[2] * rate;
+}
+
+function ditheringCanvasByPalette(canvas, palette, type) {
+  palette = palette || bwrPalette;
+
+  const ctx = canvas.getContext('2d');
+  const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
+  const w = imageData.width;
+
+  for (let currentPixel = 0; currentPixel <= imageData.data.length; currentPixel+=4) {
+    const newColor = getNearColorV2(imageData.data.slice(currentPixel, currentPixel+4), palette);
+
+    if (type === "bwr_floydsteinberg") {
+      const err = getColorErr(imageData.data.slice(currentPixel, currentPixel+4), newColor, 16);
+
+      updatePixel(imageData.data, currentPixel, newColor);
+      updatePixelErr(imageData.data, currentPixel +4, err, 7);
+      updatePixelErr(imageData.data, currentPixel + 4*w - 4, err, 3);
+      updatePixelErr(imageData.data, currentPixel + 4*w, err, 5);
+      updatePixelErr(imageData.data, currentPixel + 4*w + 4, err, 1);
+    } else {
+      const err = getColorErr(imageData.data.slice(currentPixel, currentPixel+4), newColor, 8);
+
+      updatePixel(imageData.data, currentPixel, newColor);
+      updatePixelErr(imageData.data, currentPixel +4, err, 1);
+      updatePixelErr(imageData.data, currentPixel +8, err, 1);
+      updatePixelErr(imageData.data, currentPixel +4 * w - 4, err, 1);
+      updatePixelErr(imageData.data, currentPixel +4 * w, err, 1);
+      updatePixelErr(imageData.data, currentPixel +4 * w + 4, err, 1);
+      updatePixelErr(imageData.data, currentPixel +8 * w, err, 1);
+    }
+  }
+  ctx.putImageData(imageData, 0, 0);
+}

gen/v1.5/js/main.js

@@ -0,0 +1,369 @@
+let bleDevice, gattServer;
+let epdService, epdCharacteristic;
+let startTime, msgIndex;
+let canvas, ctx, textDecoder;
+
+const EpdCmd = {
+  SET_PINS:  0x00,
+  INIT:      0x01,
+  CLEAR:     0x02,
+  SEND_CMD:  0x03,
+  SEND_DATA: 0x04,
+  REFRESH:   0x05,
+  SLEEP:     0x06,
+
+  SET_TIME:  0x20,
+
+  SET_CONFIG: 0x90,
+  SYS_RESET:  0x91,
+  SYS_SLEEP:  0x92,
+  CFG_ERASE:  0x99,
+};
+
+function resetVariables() {
+  gattServer = null;
+  epdService = null;
+  epdCharacteristic = null;
+  msgIndex = 0;
+  document.getElementById("log").value = '';
+}
+
+async function write(cmd, data, withResponse=true) {
+  if (!epdCharacteristic) {
+    addLog("服务不可用，请检查蓝牙连接");
+    return false;
+  }
+  let payload = [cmd];
+  if (data) {
+    if (typeof data == 'string') data = hex2bytes(data);
+    if (data instanceof Uint8Array) data = Array.from(data);
+    payload.push(...data)
+  }
+  addLog(`<span class="action">⇑</span> ${bytes2hex(payload)}`);
+  try {
+    if (withResponse)
+      await epdCharacteristic.writeValueWithResponse(Uint8Array.from(payload));
+    else
+      await epdCharacteristic.writeValueWithoutResponse(Uint8Array.from(payload));
+  } catch (e) {
+    console.error(e);
+    if (e.message) addLog("write: " + e.message);
+    return false;
+  }
+  return true;
+}
+
+async function epdWrite(cmd, data) {
+  const chunkSize = document.getElementById('mtusize').value - 1;
+  const interleavedCount = document.getElementById('interleavedcount').value;
+  const count = Math.round(data.length / chunkSize);
+  let chunkIdx = 0;
+  let noReplyCount = interleavedCount;
+
+  if (typeof data == 'string') data = hex2bytes(data);
+
+  await write(EpdCmd.SEND_CMD, [cmd]);
+  for (let i = 0; i < data.length; i += chunkSize) {
+    let currentTime = (new Date().getTime() - startTime) / 1000.0;
+    setStatus(`命令：0x${cmd.toString(16)}, 数据块: ${chunkIdx+1}/${count+1}, 总用时: ${currentTime}s`);
+    if (noReplyCount > 0) {
+      await write(EpdCmd.SEND_DATA, data.slice(i, i + chunkSize), false);
+      noReplyCount--;
+    } else {
+      await write(EpdCmd.SEND_DATA, data.slice(i, i + chunkSize), true);
+      noReplyCount = interleavedCount;
+    }
+    chunkIdx++;
+  }
+}
+
+async function setDriver() {
+  await write(EpdCmd.SET_PINS, document.getElementById("epdpins").value);
+  await write(EpdCmd.INIT, document.getElementById("epddriver").value);
+}
+
+async function syncTime(mode) {
+  const timestamp = new Date().getTime() / 1000;
+  const data = new Uint8Array([
+    (timestamp >> 24) & 0xFF,
+    (timestamp >> 16) & 0xFF,
+    (timestamp >> 8) & 0xFF,
+    timestamp & 0xFF,
+    -(new Date().getTimezoneOffset() / 60),
+    mode
+  ]);
+  if(await write(EpdCmd.SET_TIME, data)) {
+    addLog("时间已同步！");
+  }
+}
+
+async function clearScreen() {
+  if(confirm('确认清除屏幕内容?')) {
+    await write(EpdCmd.CLEAR);
+  }
+}
+
+async function sendcmd() {
+  const cmdTXT = document.getElementById('cmdTXT').value;
+  if (cmdTXT == '') return;
+  const bytes = hex2bytes(cmdTXT);
+  await write(bytes[0], bytes.length > 1 ? bytes.slice(1) : null);
+}
+
+async function sendimg() {
+  const status = document.getElementById("status");
+  const driver = document.getElementById("epddriver").value;
+  const mode = document.getElementById('dithering').value;
+
+  if (mode === '') {
+    alert('请选择一种取模算法！');
+    return;
+  }
+
+  startTime = new Date().getTime();
+  status.parentElement.style.display = "block";
+
+  if (mode.startsWith('bwr')) {
+    const invert = (driver === '02') || (driver === '05');
+    await epdWrite(driver === "02" ? 0x24 : 0x10, canvas2bytes(canvas, 'bw'));
+    await epdWrite(driver === "02" ? 0x26 : 0x13, canvas2bytes(canvas, 'red', invert));
+  } else {
+    await epdWrite(driver === "04" ? 0x24 : 0x13, canvas2bytes(canvas, 'bw'));
+  }
+
+  await write(EpdCmd.REFRESH);
+
+  const sendTime = (new Date().getTime() - startTime) / 1000.0;
+  addLog(`发送完成！耗时: ${sendTime}s`);
+  setStatus(`发送完成！耗时: ${sendTime}s`);
+  setTimeout(() => {
+    status.parentElement.style.display = "none";
+  }, 5000);
+}
+
+function updateButtonStatus() {
+  const connected = gattServer != null && gattServer.connected;
+  const status = connected ? null : 'disabled';
+  document.getElementById("reconnectbutton").disabled = (gattServer == null || gattServer.connected) ? 'disabled' : null;
+  document.getElementById("sendcmdbutton").disabled = status;
+  document.getElementById("calendarmodebutton").disabled = status;
+  document.getElementById("clockmodebutton").disabled = status;
+  document.getElementById("clearscreenbutton").disabled = status;
+  document.getElementById("sendimgbutton").disabled = status;
+  document.getElementById("setDriverbutton").disabled = status;
+}
+
+function disconnect() {
+  updateButtonStatus();
+  resetVariables();
+  addLog('已断开连接.');
+  document.getElementById("connectbutton").innerHTML = '连接';
+}
+
+async function preConnect() {
+  if (gattServer != null && gattServer.connected) {
+    if (bleDevice != null && bleDevice.gatt.connected) {
+      bleDevice.gatt.disconnect();
+    }
+  }
+  else {
+    resetVariables();
+    try {
+      bleDevice = await navigator.bluetooth.requestDevice({
+        optionalServices: ['62750001-d828-918d-fb46-b6c11c675aec'],
+        acceptAllDevices: true
+      });
+    } catch (e) {
+      console.error(e);
+      if (e.message) addLog("requestDevice: " + e.message);
+      addLog("请检查蓝牙是否已开启，且使用的浏览器支持蓝牙！建议使用以下浏览器：");
+      addLog("• 电脑: Chrome/Edge");
+      addLog("• Android: Chrome/Edge");
+      addLog("• iOS: Bluefy 浏览器");
+      return;
+    }
+
+    await bleDevice.addEventListener('gattserverdisconnected', disconnect);
+    setTimeout(async function () { await connect(); }, 300);
+  }
+}
+
+async function reConnect() {
+  if (bleDevice != null && bleDevice.gatt.connected)
+    bleDevice.gatt.disconnect();
+  resetVariables();
+  addLog("正在重连");
+  setTimeout(async function () { await connect(); }, 300);
+}
+
+function handleNotify(value, idx) {
+  const data = new Uint8Array(value.buffer, value.byteOffset, value.byteLength);
+  if (idx == 0) {
+    addLog(`收到配置：${bytes2hex(data)}`);
+    const epdpins = document.getElementById("epdpins");
+    const epddriver = document.getElementById("epddriver");
+    epdpins.value = bytes2hex(data.slice(0, 7));
+    if (data.length > 10) epdpins.value += bytes2hex(data.slice(10, 11));
+    epddriver.value = bytes2hex(data.slice(7, 8));
+    filterDitheringOptions();
+  } else {
+    if (textDecoder == null) textDecoder = new TextDecoder();
+    const msg = textDecoder.decode(data);
+    addLog(`<span class="action">⇓</span> ${msg}`);
+  }
+}
+
+async function connect() {
+  if (bleDevice == null || epdCharacteristic != null) return;
+
+  try {
+    addLog("正在连接: " + bleDevice.name);
+    gattServer = await bleDevice.gatt.connect();
+    addLog('  找到 GATT Server');
+    epdService = await gattServer.getPrimaryService('62750001-d828-918d-fb46-b6c11c675aec');
+    addLog('  找到 EPD Service');
+    epdCharacteristic = await epdService.getCharacteristic('62750002-d828-918d-fb46-b6c11c675aec');
+    addLog('  找到 Characteristic');
+  } catch (e) {
+    console.error(e);
+    if (e.message) addLog("connect: " + e.message);
+    disconnect();
+    return;
+  }
+
+  try {
+    await epdCharacteristic.startNotifications();
+    epdCharacteristic.addEventListener('characteristicvaluechanged', (event) => {
+      handleNotify(event.target.value, msgIndex++);
+    });
+  } catch (e) {
+    console.error(e);
+    if (e.message) addLog("startNotifications: " + e.message);
+  }
+
+  await write(EpdCmd.INIT);
+
+  document.getElementById("connectbutton").innerHTML = '断开';
+  updateButtonStatus();
+}
+
+function setStatus(statusText) {
+  document.getElementById("status").innerHTML = statusText;
+}
+
+function addLog(logTXT) {
+  const log = document.getElementById("log");
+  const now = new Date();
+  const time = String(now.getHours()).padStart(2, '0') + ":" +
+         String(now.getMinutes()).padStart(2, '0') + ":" +
+         String(now.getSeconds()).padStart(2, '0') + " ";
+  log.innerHTML += '<span class="time">' + time + '</span>' + logTXT + '<br>';
+  log.scrollTop = log.scrollHeight;
+  while ((log.innerHTML.match(/<br>/g) || []).length > 20) {
+    var logs_br_position = log.innerHTML.search("<br>");
+    log.innerHTML = log.innerHTML.substring(logs_br_position + 4);
+    log.scrollTop = log.scrollHeight;
+  }
+}
+
+function clearLog() {
+  document.getElementById("log").innerHTML = '';
+}
+
+function hex2bytes(hex) {
+  for (var bytes = [], c = 0; c < hex.length; c += 2)
+    bytes.push(parseInt(hex.substr(c, 2), 16));
+  return new Uint8Array(bytes);
+}
+
+function bytes2hex(data) {
+  return new Uint8Array(data).reduce(
+    function (memo, i) {
+      return memo + ("0" + i.toString(16)).slice(-2);
+    }, "");
+}
+
+function intToHex(intIn) {
+  let stringOut = ("0000" + intIn.toString(16)).substr(-4)
+  return stringOut.substring(2, 4) + stringOut.substring(0, 2);
+}
+
+async function update_image() {
+  const image_file = document.getElementById('image_file');
+  if (image_file.files.length == 0) return;
+
+  let image = new Image();;
+  const file = image_file.files[0];
+  image.src = URL.createObjectURL(file);
+
+  image.onload = function(event) {
+    URL.revokeObjectURL(this.src);
+    ctx.drawImage(image, 0, 0, image.width, image.height, 0, 0, canvas.width, canvas.height);
+    convert_dithering()
+  }
+}
+
+function clear_canvas() {
+  if(confirm('确认清除画布内容?')) {
+    ctx.fillStyle = 'white';
+    ctx.fillRect(0, 0, canvas.width, canvas.height);
+  }
+}
+
+function convert_dithering() {
+  const mode = document.getElementById('dithering').value;
+  if (mode === '') return;
+
+  if (mode.startsWith('bwr')) {
+    ditheringCanvasByPalette(canvas, bwrPalette, mode);
+  } else {
+    dithering(ctx, canvas.width, canvas.height, parseInt(document.getElementById('threshold').value), mode);
+  }
+}
+
+function filterDitheringOptions() {
+  const driver = document.getElementById('epddriver').value;
+  const dithering = document.getElementById('dithering');
+  for (let optgroup of dithering.getElementsByTagName('optgroup')) {
+    const drivers = optgroup.getAttribute('data-driver').split('|');
+    const show = drivers.includes(driver);
+    for (option of optgroup.getElementsByTagName('option')) {
+      if (show)
+        option.removeAttribute('disabled');
+      else
+        option.setAttribute('disabled', 'disabled');
+    }
+  }
+  dithering.value = '';
+}
+
+function checkDebugMode() {
+  const link = document.getElementById('debug-toggle');
+  const urlParams = new URLSearchParams(window.location.search);
+  const debugMode = urlParams.get('debug');
+  
+  if (debugMode === 'true') {
+      document.body.classList.add('debug-mode');
+      link.innerHTML = '正常模式';
+      link.setAttribute('href', window.location.pathname);
+      addLog("注意：开发模式功能已开启！不懂请不要随意修改，否则后果自负！");
+  } else {
+      document.body.classList.remove('debug-mode');
+      link.innerHTML = '开发模式';
+      link.setAttribute('href', window.location.pathname + '?debug=true');
+  }
+}
+
+document.body.onload = () => {
+  textDecoder = null;
+  canvas = document.getElementById('canvas');
+  ctx = canvas.getContext("2d");
+
+  ctx.fillStyle = 'white';
+  ctx.fillRect(0, 0, canvas.width, canvas.height);
+
+  updateButtonStatus();
+  filterDitheringOptions();
+
+  checkDebugMode();
+}