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Commit 00101052 authored by Dan Stoza's avatar Dan Stoza
Browse files

Enable changing display configuration 

This allows querying and switching display device configurations
through the ISurfaceComposer/SurfaceComposerClient interface.

Bug: 14320401
Change-Id: Ie4363bc8353d95428f1114ea48e5b1c8976e1730
parent 4ac525a9

core/java/android/view/SurfaceControl.java

+19 −6
Original line number Diff line number Diff line
@@ -74,8 +74,10 @@ public class SurfaceControl { 
            IBinder displayToken, int orientation,

            int l, int t, int r, int b,

            int L, int T, int R, int B);

    private static native boolean nativeGetDisplayInfo(

            IBinder displayToken, SurfaceControl.PhysicalDisplayInfo outInfo);

    private static native SurfaceControl.PhysicalDisplayInfo[] nativeGetDisplayConfigs(

            IBinder displayToken);

    private static native int nativeGetActiveConfig(IBinder displayToken);

    private static native boolean nativeSetActiveConfig(IBinder displayToken, int id);

    private static native void nativeBlankDisplay(IBinder displayToken);

    private static native void nativeUnblankDisplay(IBinder displayToken);
@@ -499,14 +501,25 @@ public class SurfaceControl { 
        nativeBlankDisplay(displayToken);

    }



    public static boolean getDisplayInfo(IBinder displayToken, SurfaceControl.PhysicalDisplayInfo outInfo) {

    public static SurfaceControl.PhysicalDisplayInfo[] getDisplayConfigs(IBinder displayToken) {

        if (displayToken == null) {

            throw new IllegalArgumentException("displayToken must not be null");

        }

        if (outInfo == null) {

            throw new IllegalArgumentException("outInfo must not be null");

        return nativeGetDisplayConfigs(displayToken);

    }

        return nativeGetDisplayInfo(displayToken, outInfo);



    public static int getActiveConfig(IBinder displayToken) {

        if (displayToken == null) {

            throw new IllegalArgumentException("displayToken must not be null");

        }

        return nativeGetActiveConfig(displayToken);

    }



    public static boolean setActiveConfig(IBinder displayToken, int id) {

        if (displayToken == null) {

            throw new IllegalArgumentException("displayToken must not be null");

        }

        return nativeSetActiveConfig(displayToken, id);

    }



    public static void setDisplayProjection(IBinder displayToken,

core/jni/android_view_SurfaceControl.cpp

+50 −16
Original line number Diff line number Diff line
@@ -50,6 +50,8 @@ static const char* const OutOfResourcesException = 
    "android/view/Surface$OutOfResourcesException";



static struct {

    jclass clazz;

    jmethodID ctor;

    jfieldID width;

    jfieldID height;

    jfieldID refreshRate;
@@ -346,16 +348,24 @@ static void nativeSetDisplayProjection(JNIEnv* env, jclass clazz, 
    SurfaceComposerClient::setDisplayProjection(token, orientation, layerStackRect, displayRect);

}



static jboolean nativeGetDisplayInfo(JNIEnv* env, jclass clazz,

        jobject tokenObj, jobject infoObj) {

static jobjectArray nativeGetDisplayConfigs(JNIEnv* env, jclass clazz,

        jobject tokenObj) {

    sp<IBinder> token(ibinderForJavaObject(env, tokenObj));

    if (token == NULL) return JNI_FALSE;

    if (token == NULL) return NULL;



    DisplayInfo info;

    if (SurfaceComposerClient::getDisplayInfo(token, &info)) {

        return JNI_FALSE;

    Vector<DisplayInfo> configs;

    if (SurfaceComposerClient::getDisplayConfigs(token, &configs) != NO_ERROR ||

            configs.size() == 0) {

        return NULL;

    }



    jobjectArray configArray = env->NewObjectArray(configs.size(),

            gPhysicalDisplayInfoClassInfo.clazz, NULL);



    for (size_t c = 0; c < configs.size(); ++c) {

        const DisplayInfo& info = configs[c];

        jobject infoObj = env->NewObject(gPhysicalDisplayInfoClassInfo.clazz,

                gPhysicalDisplayInfoClassInfo.ctor);

        env->SetIntField(infoObj, gPhysicalDisplayInfoClassInfo.width, info.w);

        env->SetIntField(infoObj, gPhysicalDisplayInfoClassInfo.height, info.h);

        env->SetFloatField(infoObj, gPhysicalDisplayInfoClassInfo.refreshRate, info.fps);
@@ -363,7 +373,24 @@ static jboolean nativeGetDisplayInfo(JNIEnv* env, jclass clazz, 
        env->SetFloatField(infoObj, gPhysicalDisplayInfoClassInfo.xDpi, info.xdpi);

        env->SetFloatField(infoObj, gPhysicalDisplayInfoClassInfo.yDpi, info.ydpi);

        env->SetBooleanField(infoObj, gPhysicalDisplayInfoClassInfo.secure, info.secure);

    return JNI_TRUE;

        env->SetObjectArrayElement(configArray, static_cast<jsize>(c), infoObj);

        env->DeleteLocalRef(infoObj);

    }



    return configArray;

}



static jint nativeGetActiveConfig(JNIEnv* env, jclass clazz, jobject tokenObj) {

    sp<IBinder> token(ibinderForJavaObject(env, tokenObj));

    if (token == NULL) return -1;

    return static_cast<jint>(SurfaceComposerClient::getActiveConfig(token));

}



static jboolean nativeSetActiveConfig(JNIEnv* env, jclass clazz, jobject tokenObj, jint id) {

    sp<IBinder> token(ibinderForJavaObject(env, tokenObj));

    if (token == NULL) return JNI_FALSE;

    status_t err = SurfaceComposerClient::setActiveConfig(token, static_cast<int>(id));

    return err == NO_ERROR ? JNI_TRUE : JNI_FALSE;

}



static void nativeBlankDisplay(JNIEnv* env, jclass clazz, jobject tokenObj) {
@@ -576,8 +603,12 @@ static JNINativeMethod sSurfaceControlMethods[] = { 
            (void*)nativeSetDisplayLayerStack },

    {"nativeSetDisplayProjection", "(Landroid/os/IBinder;IIIIIIIII)V",

            (void*)nativeSetDisplayProjection },

    {"nativeGetDisplayInfo", "(Landroid/os/IBinder;Landroid/view/SurfaceControl$PhysicalDisplayInfo;)Z",

            (void*)nativeGetDisplayInfo },

    {"nativeGetDisplayConfigs", "(Landroid/os/IBinder;)[Landroid/view/SurfaceControl$PhysicalDisplayInfo;",

            (void*)nativeGetDisplayConfigs },

    {"nativeGetActiveConfig", "(Landroid/os/IBinder;)I",

            (void*)nativeGetActiveConfig },

    {"nativeSetActiveConfig", "(Landroid/os/IBinder;I)Z",

            (void*)nativeSetActiveConfig },

    {"nativeBlankDisplay", "(Landroid/os/IBinder;)V",

            (void*)nativeBlankDisplay },

    {"nativeUnblankDisplay", "(Landroid/os/IBinder;)V",
@@ -598,6 +629,9 @@ int register_android_view_SurfaceControl(JNIEnv* env) 
            sSurfaceControlMethods, NELEM(sSurfaceControlMethods));



    jclass clazz = env->FindClass("android/view/SurfaceControl$PhysicalDisplayInfo");

    gPhysicalDisplayInfoClassInfo.clazz = static_cast<jclass>(env->NewGlobalRef(clazz));

    gPhysicalDisplayInfoClassInfo.ctor = env->GetMethodID(gPhysicalDisplayInfoClassInfo.clazz,

            "<init>", "()V");

    gPhysicalDisplayInfoClassInfo.width = env->GetFieldID(clazz, "width", "I");

    gPhysicalDisplayInfoClassInfo.height = env->GetFieldID(clazz, "height", "I");

    gPhysicalDisplayInfoClassInfo.refreshRate = env->GetFieldID(clazz, "refreshRate", "F");

services/core/java/com/android/server/display/LocalDisplayAdapter.java

+22 −6
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ import android.os.Handler; 
import android.os.IBinder;

import android.os.Looper;

import android.os.SystemProperties;

import android.util.Slog;

import android.util.SparseArray;

import android.view.Display;

import android.view.DisplayEventReceiver;
@@ -47,8 +48,6 @@ final class LocalDisplayAdapter extends DisplayAdapter { 
            new SparseArray<LocalDisplayDevice>();

    private HotplugDisplayEventReceiver mHotplugReceiver;



    private final SurfaceControl.PhysicalDisplayInfo mTempPhys = new SurfaceControl.PhysicalDisplayInfo();



    // Called with SyncRoot lock held.

    public LocalDisplayAdapter(DisplayManagerService.SyncRoot syncRoot,

            Context context, Handler handler, Listener listener) {
@@ -68,14 +67,31 @@ final class LocalDisplayAdapter extends DisplayAdapter { 


    private void tryConnectDisplayLocked(int builtInDisplayId) {

        IBinder displayToken = SurfaceControl.getBuiltInDisplay(builtInDisplayId);

        if (displayToken != null && SurfaceControl.getDisplayInfo(displayToken, mTempPhys)) {

        if (displayToken != null) {

            SurfaceControl.PhysicalDisplayInfo[] configs =

                    SurfaceControl.getDisplayConfigs(displayToken);

            if (configs == null) {

                // There are no valid configs for this device, so we can't use it

                Slog.w(TAG, "No valid configs found for display device " +

                        builtInDisplayId);

                return;

            }

            int activeConfig = SurfaceControl.getActiveConfig(displayToken);

            if (activeConfig < 0) {

                // There is no active config, and for now we don't have the

                // policy to set one.

                Slog.w(TAG, "No active config found for display device " +

                        builtInDisplayId);

                return;

            }

            LocalDisplayDevice device = mDevices.get(builtInDisplayId);

            if (device == null) {

                // Display was added.

                device = new LocalDisplayDevice(displayToken, builtInDisplayId, mTempPhys);

                device = new LocalDisplayDevice(displayToken, builtInDisplayId,

                        configs[activeConfig]);

                mDevices.put(builtInDisplayId, device);

                sendDisplayDeviceEventLocked(device, DISPLAY_DEVICE_EVENT_ADDED);

            } else if (device.updatePhysicalDisplayInfoLocked(mTempPhys)) {

            } else if (device.updatePhysicalDisplayInfoLocked(configs[activeConfig])) {

                // Display properties changed.

                sendDisplayDeviceEventLocked(device, DISPLAY_DEVICE_EVENT_CHANGED);

            }