HarmonyOS 鸿蒙Next怎么保存相机预览的textureId纹理映射到ImageReceiver

相机预览与输出大小:宽1920,高1440,
const img: image.Image | undefined = await this.imageReceiver?.readNextImage()
const i = await img?.getComponent(image.ComponentType.JPEG)
if (img === undefined) {
return ‘’;
}
if (i?.byteBuffer) {
let width = img.size.width; // 获取图片的宽
let height = img.size.height; // 获取图片的高
let stride = i.rowStride; // 获取图片的stride
console.debug(getComponent with width:${width} height:${height} stride:${stride});
// 这里的stride与width结果不一致,stride:5888,width:1440
if (stride == width) {
} else {
// stride与width不一致,
这里换算有点问题,会超出索引,这里该如何改
const dstBufferSize = width * height * 1.5
const dstArr = new Uint8Array(dstBufferSize)
for (let j = 0; j < height * 1.5; j++) {
const srcBuf = new Uint8Array(i.byteBuffer, j * stride, width)
dstArr.set(srcBuf, j * width)
}
let pixelMap = await image.createPixelMap(i?.byteBuffer, {
size: { height: height, width: width },
srcPixelFormat: image.PixelMapFormat.RGBA_8888,
})
return pixelMap;
}
}