android - Camera2 API 问题
问题描述
我让一些相机应用程序使用 camera2 APi 示例 camera2 api google sample,所以我的相机输出不是全屏
然后我从 camera2 api isue 中读取以解决我必须在 AUtofitTextureView 类的 Onmeasure 中更改它:
if (width < height * mRatioWidth / mRatioHeight) {
从 < 到 > 就像这里:
if (width > height * mRatioWidth / mRatioHeight) {
但现在我有其他问题,我的捕获图像比我的预览大。
请检查我的应用程序中的屏幕截图
- 我的相机预览不是全屏
- 如果相机预览不是全屏,我的捕获图像
问题是使我的捕获图像与我的相机预览不同
解决方案
我已经通过以下方式尝试过,这里分享了我的代码,用于保持 16:9,18:9,19:9 的纵横比。希望这个答案会有所帮助,基于设备分辨率选择 ArrayList 具有最大到最小分辨率是我解决预览拉伸问题的方式。
//Samsung-S6-choices[0]
//Samsung-S7-edge-choices[6]
//OnePlus-5T-choices[15]
/*
* Given {@code choices} of {@code Size}s supported by a camera, chooses the smallest one whose
* width and height are at least as large as the respective requested values, and whose aspect
* ratio matches with the specified value.
*
* @param choices The list of sizes that the camera supports for the intended output class
* @param width The minimum desired width
* @param height The minimum desired height
* @param aspectRatio The aspect ratio
* @return The optimal {@code Size}, or an arbitrary one if none were big enough
*/
private Size chooseOptimalSize(Size[] choices, int width, int height, Size aspectRatio) {
// Collect the supported resolutions that are at least as big as the preview Surface
List<Size> bigEnough = new ArrayList<>();
int w = aspectRatio.getWidth();
int h = aspectRatio.getHeight();
double ratio = (double) h / w;
int loopCounter=0;
for (Size size : choices) {
int orientation = getActivityContext.getResources().getConfiguration().orientation;
if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
//if((size.getWidth()/16) == (size.getHeight()/9) && size.getWidth() <=720) {
//if((size.getWidth()/16) == (size.getHeight()/9) && size.getWidth() <=3840 ) {
//if((size.getWidth()/16) == (size.getHeight()/9) && size.getWidth() <=5120 ) {//Retina 5K
if((size.getWidth()/16) == (size.getHeight()/9) && size.getWidth() <=7680 ) {//8K UHDTV Super Hi-Vision
Log.e(TAG1, "chooseOptimalSize:"+size);
return size;
}
} else {
Log.e(TAG1, "chooseOptimalSize:--given--"+size);
DisplayMetrics metrics = getActivityContext.getResources().getDisplayMetrics();
float mCameraAspectRatio = ((float)metrics.heightPixels / (float)metrics.widthPixels);
Log.e(TAG1, "chooseOptimalSize:--AspectRatio--"+mCameraAspectRatio);
if((size.getWidth()/16) == (size.getHeight()/9) && ((size.getWidth() <=1280)||(size.getHeight()<=1920))) {
//if((size.getWidth()/16) == (size.getHeight()/9) && (size.getWidth() <=4320 ) ) {//8K UHDTV Super Hi-Vision
//if((size.getWidth()/16) == (size.getHeight()/9) && (size.getWidth() <=2880 ) ) {//Retina 5K
//if((size.getWidth()/16) == (size.getHeight()/9) && (size.getWidth() <=2160 ) ) {
//if((size.getWidth()/16) == (size.getHeight()/9) && (size.getWidth() <=1280 ) ) {
//if((size.getWidth()/16) == (size.getHeight()/9) && (size.getWidth() <=4480 && size.getWidth() >=1280) ) {
Log.e(TAG1, "chooseOptimalSize:"+size+"-16:9");
return size;
}else if((size.getWidth()/18) == (size.getHeight()/9) && ((size.getWidth() <=3840)||(size.getHeight()<=2160))) {
Log.e(TAG1, "chooseOptimalSize:"+size+"-18:9");
return size;
}else if((size.getWidth()/18.5) == (size.getHeight()/9) && ((size.getWidth() <=3840)||(size.getHeight()<=2160))) {
Log.e(TAG1, "chooseOptimalSize:"+size+"-18.5:9");
return size;
}else if((size.getWidth()/19) == (size.getHeight()/9) && ((size.getWidth() <=3840)||(size.getHeight()<=2160))) {
Log.e(TAG1, "chooseOptimalSize:"+size+"-19:9");
return size;
}else if((size.getWidth()/19.5) == (size.getHeight()/9) && ((size.getWidth() <=3840)||(size.getHeight()<=2160))) {
Log.e(TAG1, "chooseOptimalSize:"+size+"-19.5:9");
return size;
}else{
Log.e(TAG1, "chooseOptimalSize"+" not proper aspect resolution");
Log.e(TAG1, "chooseOptimalSize"+" ---=>Width---=>"+size.getWidth());
Log.e(TAG1, "chooseOptimalSize"+" ---=>Height---=>"+size.getHeight());
}
//2340
}
if(screenWidth==size.getWidth()){
Log.e(TAG1, loopCounter+".choose:width Matched:"+screenWidth+"="+size.getWidth());
}else{
Log.e(TAG1, loopCounter+".choose:width Not Matched:"+screenWidth+"="+size.getWidth());
}
if(screenHeight==size.getHeight()){
Log.e(TAG1, loopCounter+".choose:height Matched:"+screenHeight+"="+size.getHeight());
}else{
Log.e(TAG1, loopCounter+".choose:height Not Matched:"+screenHeight+"="+size.getHeight());
}
loopCounter++;
}
// Pick the smallest of those, assuming we found any
if (bigEnough.size() > 0) {
return Collections.min(bigEnough, new CompareSizesByArea());
} else {
Log.e(TAG1, "Couldn't find any suitable preview size");
return choices[0];
}
}
/*
* Compares two {@code Size}s based on their areas.
*/
static class CompareSizesByArea implements Comparator<Size> {
@Override
public int compare(Size lhs, Size rhs) {
// We cast here to ensure the multiplications won't overflow
return Long.signum((long) lhs.getWidth() * lhs.getHeight() -
(long) rhs.getWidth() * rhs.getHeight());
}
}
希望对您有所帮助,如有问题,请发表评论。
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