Add a new api to support HDCP

A special HDCP level change callback is reported.

Bug: 293945485
Test: manual
Change-Id: I096554a9e1f69c3dba7c7da58917f2b498ae8726

drm/common/aidl/Android.bp

@@ -9,6 +9,7 @@ package {
 
 aidl_interface {
     name: "android.hardware.drm.common",
+    host_supported: true,
     vendor_available: true,
     srcs: ["android/hardware/drm/*.aidl"],
     stability: "vintf",
@@ -22,6 +23,9 @@ aidl_interface {
         ndk: {
             min_sdk_version: "34",
         },
+        rust: {
+            enabled: true,
+        },
     },
     double_loadable: true,
     versions_with_info: [

graphics/Android.bp

@@ -53,6 +53,7 @@ cc_defaults {
 cc_defaults {
     name: "android.hardware.graphics.composer3-ndk_static",
     static_libs: [
+        "android.hardware.drm.common-V1-ndk",
         "android.hardware.graphics.composer3-V4-ndk",
     ],
 }
@@ -60,6 +61,7 @@ cc_defaults {
 cc_defaults {
     name: "android.hardware.graphics.composer3-ndk_shared",
     shared_libs: [
+        "android.hardware.drm.common-V1-ndk",
         "android.hardware.graphics.composer3-V4-ndk",
     ],
 }

graphics/composer/aidl/Android.bp

@@ -37,6 +37,7 @@ aidl_interface {
     imports: [
         "android.hardware.graphics.common-V5",
         "android.hardware.common-V2",
+        "android.hardware.drm.common-V1",
     ],
     backend: {
         cpp: {

graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/IComposerCallback.aidl

@@ -45,4 +45,5 @@ interface IComposerCallback {
   oneway void onVsyncIdle(long display);
   oneway void onRefreshRateChangedDebug(in android.hardware.graphics.composer3.RefreshRateChangedDebugData data);
   void onHotplugEvent(long display, android.hardware.graphics.common.DisplayHotplugEvent event);
+  oneway void onHdcpLevelsChanged(long display, in android.hardware.drm.HdcpLevels levels);
 }

graphics/composer/aidl/android/hardware/graphics/composer3/IComposerCallback.aidl

@@ -16,6 +16,7 @@
 
 package android.hardware.graphics.composer3;
 
+import android.hardware.drm.HdcpLevels;
 import android.hardware.graphics.common.DisplayHotplugEvent;
 import android.hardware.graphics.composer3.RefreshRateChangedDebugData;
 import android.hardware.graphics.composer3.VsyncPeriodChangeTimeline;
@@ -139,4 +140,12 @@ interface IComposerCallback {
      * @param event is the type of event that occurred.
      */
     void onHotplugEvent(long display, DisplayHotplugEvent event);
+
+    /**
+     * Notify the client the HDCP levels of the display changed.
+     *
+     * @param display is the display whose HDCP levels have changed.
+     * @param levels is the new HDCP levels.
+     */
+    oneway void onHdcpLevelsChanged(long display, in HdcpLevels levels);
 }

graphics/composer/aidl/vts/Android.bp

@@ -66,6 +66,7 @@ cc_test {
         "android.hardware.graphics.common@1.2",
         "android.hardware.common-V2-ndk",
         "android.hardware.common.fmq-V1-ndk",
+        "android.hardware.drm.common-V1-ndk",
         "libaidlcommonsupport",
         "libarect",
         "libbase",

graphics/composer/aidl/vts/GraphicsComposerCallback.cpp

@@ -208,4 +208,15 @@ int32_t GraphicsComposerCallback::getInvalidRefreshRateDebugEnabledCallbackCount
     }
 }
 
+::ndk::ScopedAStatus GraphicsComposerCallback::onHdcpLevelsChanged(
+        int64_t in_display, const ::aidl::android::hardware::drm::HdcpLevels&) {
+    std::scoped_lock lock(mMutex);
+
+    const auto it = std::find(mDisplays.begin(), mDisplays.end(), in_display);
+    if (it != mDisplays.end()) {
+        mHdcpLevelChangedCount++;
+    }
+    return ::ndk::ScopedAStatus::ok();
+}
+
 }  // namespace aidl::android::hardware::graphics::composer3::vts

graphics/composer/aidl/vts/GraphicsComposerCallback.h

@@ -65,6 +65,8 @@ class GraphicsComposerCallback : public BnComposerCallback {
             const RefreshRateChangedDebugData&) override;
     virtual ::ndk::ScopedAStatus onHotplugEvent(int64_t in_display,
                                                 common::DisplayHotplugEvent) override;
+    virtual ::ndk::ScopedAStatus onHdcpLevelsChanged(
+            int64_t in_display, const ::aidl::android::hardware::drm::HdcpLevels&) override;
 
     mutable std::mutex mMutex;
     // the set of all currently connected displays
@@ -88,6 +90,7 @@ class GraphicsComposerCallback : public BnComposerCallback {
     int32_t mInvalidVsyncPeriodChangeCount GUARDED_BY(mMutex) = 0;
     int32_t mInvalidSeamlessPossibleCount GUARDED_BY(mMutex) = 0;
     int32_t mInvalidRefreshRateDebugEnabledCallbackCount GUARDED_BY(mMutex) = 0;
+    int32_t mHdcpLevelChangedCount GUARDED_BY(mMutex) = 0;
 };
 
 }  // namespace aidl::android::hardware::graphics::composer3::vts