在Android上的相机预览 - 奇怪的三星Galaxy S [英] Camera preview on Android - strange on Samsung Galaxy S
问题描述
在我的活动中,我在surfaceView上显示相机预览。它的工作原理在Nexus One和HTC Desire,但在三星Galaxy S我看到奇怪的线条,奇怪的比例和一切三次。请参阅下面的屏幕截图。
In my activity I show the camera preview on a surfaceView. It works perfectly fine on Nexus One and HTC Desire, but on Samsung Galaxy S I see strange lines, weird proportions and everything three times. see the Screenshot below.
问题似乎与此类似:
在android上的相机预览 - 1.5版本的sdk上的奇怪线条
但没有评论有帮助。我尝试交换高度,宽度的相机参数,但没有太大的区别。
The issue seems to be similar to this one: camera preview on android - strange lines on 1.5 version of sdk but none of the comments there helped. I tried to swap height,width for the camera parameters, but not much of a difference.
(边注:我的活动总是在横向模式,
(Side note: my activity is always in landscape mode, fixed. I have that fix in my manifest as screenOrientation parameters, in case that matters somehow).
我的SurfaceHolderCallback代码(我的活动中的相关内部类):
The code of my SurfaceHolderCallback (the relevant inner class in my activity):
class SurfaceHolderCallback implements SurfaceHolder.Callback {
private static final int IMAGE_WIDTH = 512;
private static final int IMAGE_HEIGHT = 384;
private static final String ORIENTATION = "orientation";
private static final String ROTATION = "rotation";
private static final String PORTRAIT = "portrait";
private static final String LANDSCAPE = "landscape";
public void surfaceCreated(SurfaceHolder holder) {
camera = Camera.open();
//Surface.setOrientation(Display.DEFAULT_DISPLAY,Surface.ROTATION_90);
Parameters p = camera.getParameters();
p.setPictureSize(IMAGE_WIDTH, IMAGE_HEIGHT);
p.set(ORIENTATION, PORTRAIT);
p.set(ROTATION, 90);
// p.setPreviewSize(640, 480);
Camera.Size s = p.getSupportedPreviewSizes().get(0);
Log.d(APP, "preview params " + s.width +"/"+ s.height);
p.setPreviewSize( s.width,s.height );
p.setPictureFormat(PixelFormat.JPEG);
p.set("flash-mode", "auto");
camera.setParameters(p);
try {
camera.setPreviewDisplay(surfaceHolder);
} catch (Throwable ignored) {
Log.e(APP, "set preview error.", ignored);
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int width,
int height) {
if (isPreviewRunning) {
camera.stopPreview();
}
try {
camera.startPreview();
} catch(Exception e) {
Log.d(APP, "Cannot start preview", e);
}
isPreviewRunning = true;
}
...
推荐答案
我找到三星似乎有参数的问题
I found that Samsung seems to have problems with the parameters
p.set("orientation", "portrait");
p.set("rotation", 90);
取消注释后,它看起来确定。我只需要手动旋转图像。
After uncommenting those, it looks ok. I just need to rotate the image afterwards manually then.
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