libnativedisplay: plumb setFrameRate to SurfaceTexure

Bug: 281695725
Test: manual using a test app
Change-Id: I2d18c843d9e0771cef4378f58f1197f974163fa0
diff --git a/libs/nativedisplay/include/surfacetexture/SurfaceTexture.h b/libs/nativedisplay/include/surfacetexture/SurfaceTexture.h
index 4672705..32fb350 100644
--- a/libs/nativedisplay/include/surfacetexture/SurfaceTexture.h
+++ b/libs/nativedisplay/include/surfacetexture/SurfaceTexture.h
@@ -19,6 +19,7 @@
 #include <android/hardware_buffer.h>
 #include <gui/BufferQueueDefs.h>
 #include <gui/ConsumerBase.h>
+#include <gui/Flags.h>
 #include <gui/IGraphicBufferProducer.h>
 #include <sys/cdefs.h>
 #include <system/graphics.h>
@@ -295,6 +296,8 @@
      */
     struct SurfaceTextureListener : public RefBase {
         virtual void onFrameAvailable(const BufferItem& item) = 0;
+        virtual void onSetFrameRate(float frameRate, int8_t compatibility,
+                                    int8_t changeFrameRateStrategy) = 0;
     };
 
     /**
@@ -347,6 +350,14 @@
     void computeCurrentTransformMatrixLocked();
 
     /**
+     * onSetFrameRate Notifies the consumer of a setFrameRate call from the producer side.
+     */
+#if FLAG_BQ_SET_FRAME_RATE
+    void onSetFrameRate(float frameRate, int8_t compatibility,
+                        int8_t changeFrameRateStrategy) override;
+#endif
+
+    /**
      * The default consumer usage flags that SurfaceTexture always sets on its
      * BufferQueue instance; these will be OR:d with any additional flags passed
      * from the SurfaceTexture user. In particular, SurfaceTexture will always
diff --git a/libs/nativedisplay/surfacetexture/SurfaceTexture.cpp b/libs/nativedisplay/surfacetexture/SurfaceTexture.cpp
index 11482ec..c2535e0 100644
--- a/libs/nativedisplay/surfacetexture/SurfaceTexture.cpp
+++ b/libs/nativedisplay/surfacetexture/SurfaceTexture.cpp
@@ -515,4 +515,20 @@
     }
 }
 
+#if FLAG_BQ_SET_FRAME_RATE
+void SurfaceTexture::onSetFrameRate(float frameRate, int8_t compatibility,
+                                    int8_t changeFrameRateStrategy) {
+    SFT_LOGV("onSetFrameRate: %.2f", frameRate);
+
+    auto listener = [&] {
+        Mutex::Autolock _l(mMutex);
+        return mSurfaceTextureListener;
+    }();
+
+    if (listener) {
+        listener->onSetFrameRate(frameRate, compatibility, changeFrameRateStrategy);
+    }
+}
+#endif
+
 } // namespace android