Fix preview rotation bug

Signed-off-by: Leo Ma <begeekmyfriend@gmail.com>

app/build.gradle

@@ -25,6 +25,6 @@ android {
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
     testCompile 'junit:junit:4.12'
-    compile 'com.android.support:appcompat-v7:25.2.0'
+    compile 'com.android.support:appcompat-v7:25.3.1'
     compile project(path: ':library')
 }

build.gradle

@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:2.3.0'
+        classpath 'com.android.tools.build:gradle:2.3.1'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

library/src/main/java/net/ossrs/yasea/SrsCameraView.java

@@ -38,6 +38,7 @@ public class SrsCameraView extends GLSurfaceView implements GLSurfaceView.Render
     private int mPreviewWidth;
     private int mPreviewHeight;
     private boolean mIsEncoding;
+    private boolean mIsTorchOn = false;
     private float mInputAspectRatio;
     private float mOutputAspectRatio;
     private float[] mProjectionMatrix = new float[16];
@@ -199,17 +200,19 @@ public class SrsCameraView extends GLSurfaceView implements GLSurfaceView.Render
         mPreviewOrientation = orientation;
         Camera.CameraInfo info = new Camera.CameraInfo();
         Camera.getCameraInfo(mCamId, info);
-        if (info.facing == Camera.CameraInfo.CAMERA_FACING_BACK) {
         if (orientation == Configuration.ORIENTATION_PORTRAIT) {
-                mPreviewRotation = Build.VERSION.SDK_INT >= Build.VERSION_CODES.N ? 270 : 90;
-            } else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
-                mPreviewRotation = Build.VERSION.SDK_INT >= Build.VERSION_CODES.N ? 180 : 0;
+            if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
+                mPreviewRotation = info.orientation % 360;
+                mPreviewRotation = (360 - mPreviewRotation) % 360;  // compensate the mirror
+            } else {  // back-facing
+                mPreviewRotation = (info.orientation + 360) % 360;
             }
-        } else if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
-            if (orientation == Configuration.ORIENTATION_PORTRAIT) {
-                mPreviewRotation = 90;
         } else if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
-                mPreviewRotation = 0;
+            if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
+                mPreviewRotation = (info.orientation + 90) % 360;
+                mPreviewRotation = (360 - mPreviewRotation) % 360;  // compensate the mirror
+            } else {  // back-facing
+                mPreviewRotation = (info.orientation + 270) % 360;
             }
         }
     }
@@ -293,7 +296,9 @@ public class SrsCameraView extends GLSurfaceView implements GLSurfaceView.Render
         List<String> supportedFlashModes = params.getSupportedFlashModes();
         if (supportedFlashModes != null && !supportedFlashModes.isEmpty()) {
             if (supportedFlashModes.contains(Camera.Parameters.FLASH_MODE_TORCH)) {
+                if (mIsTorchOn) {
                     params.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
+                }
             } else {
                 params.setFlashMode(supportedFlashModes.get(0));
             }

library/src/main/java/net/ossrs/yasea/SrsEncoder.java

@@ -97,7 +97,7 @@ public class SrsEncoder {
 
         // Note: the stride of resolution must be set as 16x for hard encoding with some chip like MTK
         // Since Y component is quadruple size as U and V component, the stride must be set as 32x
-        if (!useSoftEncoder && (vOutWidth % 32 != 0 || vOutHeight % 32 != 0)) {
+        if (!useSoftEncoder && vOutWidth % 32 != 0 || vOutHeight % 32 != 0) {
             if (vmci.getName().contains("MTK")) {
                 //throw new AssertionError("MTK encoding revolution stride must be 32x");
             }
@@ -284,7 +284,7 @@ public class SrsEncoder {
         
         // Note: the stride of resolution must be set as 16x for hard encoding with some chip like MTK
         // Since Y component is quadruple size as U and V component, the stride must be set as 32x
-        if (!useSoftEncoder && (vOutWidth % 32 != 0 || vOutHeight % 32 != 0)) {
+        if (!useSoftEncoder && vOutWidth % 32 != 0 || vOutHeight % 32 != 0) {
             if (vmci.getName().contains("MTK")) {
                 //throw new AssertionError("MTK encoding revolution stride must be 32x");
             }