问题描述
嗨,我是开发和编写相机应用程序的新手。我想以纵向将图像保存到我的设备。但是我的代码让它们保持横向!并且图像被拉伸。
我已阅读有关此主题的所有问题,但仍然找不到所需的答案。
要转换我使用:
public static byte[] NV21toJPEG(byte[] nv21,int width,int height,int quality) {
ByteArrayOutputStream out = new ByteArrayOutputStream();
YuvImage yuv = new YuvImage(nv21,ImageFormat.NV21,width,height,null);
yuv.compresstoJpeg(new Rect(0,height),quality,out);
return out.toByteArray();
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public static byte[] YUV420toNV21(Image image) {
Rect crop = image.getCropRect();
int format = image.getFormat();
int width = crop.width();
int height = crop.height();
Image.Plane[] planes = image.getPlanes();
byte[] data = new byte[width * height * ImageFormat.getBitsPerPixel(format) / 8];
byte[] rowData = new byte[planes[0].getRowStride()];
int channelOffset = 0;
int outputStride = 1;
for (int i = 0; i < planes.length; i++) {
switch (i) {
case 0:
channelOffset = 0;
outputStride = 1;
break;
case 1:
channelOffset = width * height + 1;
outputStride = 2;
break;
case 2:
channelOffset = width * height;
outputStride = 2;
break;
}
ByteBuffer buffer = planes[i].getBuffer();
int rowStride = planes[i].getRowStride();
int pixelStride = planes[i].getPixelStride();
int shift = (i == 0) ? 0 : 1;
int w = width >> shift;
int h = height >> shift;
buffer.position(rowStride * (crop.top >> shift) + pixelStride * (crop.left >> shift));
for (int row = 0; row < h; row++) {
int length;
if (pixelStride == 1 && outputStride == 1) {
length = w;
buffer.get(data,channelOffset,length);
channelOffset += length;
} else {
length = (w - 1) * pixelStride + 1;
buffer.get(rowData,length);
for (int col = 0; col < w; coL++) {
data[channelOffset] = rowData[col * pixelStride];
channelOffset += outputStride;
}
}
if (row < h - 1) {
buffer.position(buffer.position() + rowStride - length);
}
}
}
return data;
}
请帮帮我!
解决方法
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