3 files changed, 61 insertions, 0 deletions

diff --git a/libs/gui/ISurfaceTexture.cpp b/libs/gui/ISurfaceTexture.cpp
index 41434a4..b4b7492 100644
--- a/libs/gui/ISurfaceTexture.cpp
+++ b/libs/gui/ISurfaceTexture.cpp
@@ -43,6 +43,7 @@ enum {
     SET_SYNCHRONOUS_MODE,
     CONNECT,
     DISCONNECT,
+    SET_SCALING_MODE,
 };
 
 
@@ -130,6 +131,15 @@ public:
         return result;
     }
 
+    virtual status_t setScalingMode(int mode) {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
+        data.writeInt32(mode);
+        remote()->transact(SET_SCALING_MODE, data, &reply);
+        status_t result = reply.readInt32();
+        return result;
+    }
+
     virtual sp<IBinder> getAllocator() {
         Parcel data, reply;
         data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
@@ -244,6 +254,13 @@ status_t BnSurfaceTexture::onTransact(
             reply->writeInt32(result);
             return NO_ERROR;
         } break;
+        case SET_SCALING_MODE: {
+            CHECK_INTERFACE(ISurfaceTexture, data, reply);
+            int mode = data.readInt32();
+            status_t result = setScalingMode(mode);
+            reply->writeInt32(result);
+            return NO_ERROR;
+        } break;
         case GET_ALLOCATOR: {
             CHECK_INTERFACE(ISurfaceTexture, data, reply);
             sp<IBinder> result = getAllocator();
diff --git a/libs/gui/SurfaceTexture.cpp b/libs/gui/SurfaceTexture.cpp
index a12d40a..cc9f461 100644
--- a/libs/gui/SurfaceTexture.cpp
+++ b/libs/gui/SurfaceTexture.cpp
@@ -90,6 +90,7 @@ SurfaceTexture::SurfaceTexture(GLuint tex, bool allowSynchronousMode) :
     mCurrentTransform(0),
     mCurrentTimestamp(0),
     mNextTransform(0),
+    mNextScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
     mTexName(tex),
     mSynchronousMode(false),
     mAllowSynchronousMode(allowSynchronousMode),
@@ -453,6 +454,7 @@ status_t SurfaceTexture::queueBuffer(int buf, int64_t timestamp) {
         mSlots[buf].mBufferState = BufferSlot::QUEUED;
         mSlots[buf].mCrop = mNextCrop;
         mSlots[buf].mTransform = mNextTransform;
+        mSlots[buf].mScalingMode = mNextScalingMode;
         mSlots[buf].mTimestamp = timestamp;
         mDequeueCondition.signal();
     } // scope for the lock
@@ -542,6 +544,22 @@ status_t SurfaceTexture::disconnect(int api) {
     return err;
 }
 
+status_t SurfaceTexture::setScalingMode(int mode) {
+    LOGV("SurfaceTexture::setScalingMode");
+
+    switch (mode) {
+        case NATIVE_WINDOW_SCALING_MODE_FREEZE:
+        case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW:
+            break;
+        default:
+            return BAD_VALUE;
+    }
+
+    Mutex::Autolock lock(mMutex);
+    mNextScalingMode = mode;
+    return OK;
+}
+
 status_t SurfaceTexture::updateTexImage() {
     LOGV("SurfaceTexture::updateTexImage");
     Mutex::Autolock lock(mMutex);
@@ -602,6 +620,7 @@ status_t SurfaceTexture::updateTexImage() {
         mCurrentTextureBuf = mSlots[buf].mGraphicBuffer;
         mCurrentCrop = mSlots[buf].mCrop;
         mCurrentTransform = mSlots[buf].mTransform;
+        mCurrentScalingMode = mSlots[buf].mScalingMode;
         mCurrentTimestamp = mSlots[buf].mTimestamp;
         computeCurrentTransformMatrix();
 
@@ -809,6 +828,11 @@ uint32_t SurfaceTexture::getCurrentTransform() const {
     return mCurrentTransform;
 }
 
+uint32_t SurfaceTexture::getCurrentScalingMode() const {
+    Mutex::Autolock lock(mMutex);
+    return mCurrentScalingMode;
+}
+
 int SurfaceTexture::query(int what, int* outValue)
 {
     Mutex::Autolock lock(mMutex);
diff --git a/libs/gui/SurfaceTextureClient.cpp b/libs/gui/SurfaceTextureClient.cpp
index d5b7c89..fec80ef 100644
--- a/libs/gui/SurfaceTextureClient.cpp
+++ b/libs/gui/SurfaceTextureClient.cpp
@@ -286,6 +286,9 @@ int SurfaceTextureClient::perform(int operation, va_list args)
     case NATIVE_WINDOW_UNLOCK_AND_POST:
         res = dispatchUnlockAndPost(args);
         break;
+    case NATIVE_WINDOW_SET_SCALING_MODE:
+        res = dispatchSetScalingMode(args);
+        break;
     default:
         res = NAME_NOT_FOUND;
         break;
@@ -340,6 +343,11 @@ int SurfaceTextureClient::dispatchSetBuffersFormat(va_list args) {
     return setBuffersFormat(f);
 }
 
+int SurfaceTextureClient::dispatchSetScalingMode(va_list args) {
+    int m = va_arg(args, int);
+    return setScalingMode(m);
+}
+
 int SurfaceTextureClient::dispatchSetBuffersTransform(va_list args) {
     int transform = va_arg(args, int);
     return setBuffersTransform(transform);
@@ -456,6 +464,18 @@ int SurfaceTextureClient::setBuffersFormat(int format)
     return NO_ERROR;
 }
 
+int SurfaceTextureClient::setScalingMode(int mode)
+{
+    LOGV("SurfaceTextureClient::setScalingMode");
+    Mutex::Autolock lock(mMutex);
+    // mode is validated on the server
+    status_t err = mSurfaceTexture->setScalingMode(mode);
+    LOGE_IF(err, "ISurfaceTexture::setScalingMode(%d) returned %s",
+            mode, strerror(-err));
+
+    return err;
+}
+
 int SurfaceTextureClient::setBuffersTransform(int transform)
 {
     LOGV("SurfaceTextureClient::setBuffersTransform");