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Rewrite logic for enabling secure DummySurface

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Issue: #3215

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=167505797
This commit is contained in:
olly 2017-09-04 09:57:56 -07:00 committed by Oliver Woodman
parent 61ee1f6a27
commit 8676c4a0f4
1 changed files with 19 additions and 16 deletions
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35
library/core/src/main/java/com/google/android/exoplayer2/video/DummySurface.java
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@ -90,12 +90,7 @@ public final class DummySurface extends Surface {
*/
public static synchronized boolean isSecureSupported(Context context) {
if (!secureSupportedInitialized) {
if (Util.SDK_INT >= 17) {
EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
String extensions = EGL14.eglQueryString(display, EGL10.EGL_EXTENSIONS);
secureSupported = extensions != null && extensions.contains("EGL_EXT_protected_content")
&& !deviceNeedsSecureDummySurfaceWorkaround(context);
}
secureSupported = Util.SDK_INT >= 24 && enableSecureDummySurfaceV24(context);
secureSupportedInitialized = true;
}
return secureSupported;
@ -148,20 +143,28 @@ public final class DummySurface extends Surface {
}
/**
* Returns whether the device is known to advertise secure surface textures but not implement them
* correctly.
* Returns whether use of secure dummy surfaces should be enabled.
*
* @param context Any {@link Context}.
*/
private static boolean deviceNeedsSecureDummySurfaceWorkaround(Context context) {
return (Util.SDK_INT == 24 && "samsung".equals(Util.MANUFACTURER))
|| (Util.SDK_INT < 26
&& !hasVrModeHighPerformanceSystemFeatureV24(context.getPackageManager()));
}
@TargetApi(24)
private static boolean hasVrModeHighPerformanceSystemFeatureV24(PackageManager packageManager) {
return packageManager.hasSystemFeature(PackageManager.FEATURE_VR_MODE_HIGH_PERFORMANCE);
private static boolean enableSecureDummySurfaceV24(Context context) {
EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
String eglExtensions = EGL14.eglQueryString(display, EGL10.EGL_EXTENSIONS);
if (eglExtensions == null || !eglExtensions.contains("EGL_EXT_protected_content")) {
// EGL_EXT_protected_content is required to enable secure dummy surfaces.
return false;
}
if (Util.SDK_INT == 24 && "samsung".equals(Util.MANUFACTURER)) {
// Samsung devices running API level 24 are known to be broken [Internal: b/37197802].
return false;
}
if (Util.SDK_INT < 26 && !context.getPackageManager().hasSystemFeature(
PackageManager.FEATURE_VR_MODE_HIGH_PERFORMANCE)) {
// Pre API level 26 devices were not well tested unless they supported VR mode.
return false;
}
return true;
}
private static class DummySurfaceThread extends HandlerThread implements OnFrameAvailableListener,