Support enable/disable Frontends.

Bug: 210199978
Test: atest VtsHalTvTunerTargetTest
Change-Id: I08411ef92d83be6623ed60565d65d6e9093405ad
diff --git a/tv/tuner/aidl/vts/functional/FrontendTests.cpp b/tv/tuner/aidl/vts/functional/FrontendTests.cpp
index 075ffad..41e98ea 100644
--- a/tv/tuner/aidl/vts/functional/FrontendTests.cpp
+++ b/tv/tuner/aidl/vts/functional/FrontendTests.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include <aidl/android/hardware/tv/tuner/Result.h>
+
 #include "FrontendTests.h"
 
 ndk::ScopedAStatus FrontendCallback::onEvent(FrontendEventType frontendEventType) {
@@ -519,6 +521,41 @@
     ASSERT_TRUE(closeFrontend());
 }
 
+void FrontendTests::maxNumberOfFrontendsTest() {
+    ASSERT_TRUE(getFrontendIds());
+    for (size_t i = 0; i < mFeIds.size(); i++) {
+        ASSERT_TRUE(getFrontendInfo(mFeIds[i]));
+        int32_t defaultMax = -1;
+        ndk::ScopedAStatus status;
+        // Check default value
+        status = mService->getMaxNumberOfFrontends(mFrontendInfo.type, &defaultMax);
+        ASSERT_TRUE(status.isOk());
+        ASSERT_TRUE(defaultMax > 0);
+        // Set to -1
+        status = mService->setMaxNumberOfFrontends(mFrontendInfo.type, -1);
+        ASSERT_TRUE(status.getServiceSpecificError() ==
+                    static_cast<int32_t>(Result::INVALID_ARGUMENT));
+        // Set to defaultMax + 1
+        status = mService->setMaxNumberOfFrontends(mFrontendInfo.type, defaultMax + 1);
+        ASSERT_TRUE(status.getServiceSpecificError() ==
+                    static_cast<int32_t>(Result::INVALID_ARGUMENT));
+        // Set to 0
+        status = mService->setMaxNumberOfFrontends(mFrontendInfo.type, 0);
+        ASSERT_TRUE(status.isOk());
+        // Check after set
+        int32_t currentMax = -1;
+        status = mService->getMaxNumberOfFrontends(mFrontendInfo.type, &currentMax);
+        ASSERT_TRUE(status.isOk());
+        ASSERT_TRUE(currentMax == 0);
+        // Reset to default
+        status = mService->setMaxNumberOfFrontends(mFrontendInfo.type, defaultMax);
+        ASSERT_TRUE(status.isOk());
+        status = mService->getMaxNumberOfFrontends(mFrontendInfo.type, &currentMax);
+        ASSERT_TRUE(status.isOk());
+        ASSERT_TRUE(defaultMax == currentMax);
+    }
+}
+
 void FrontendTests::scanTest(FrontendConfig frontendConf, FrontendScanType scanType) {
     int32_t feId;
     getFrontendIdByType(frontendConf.type, feId);
diff --git a/tv/tuner/aidl/vts/functional/FrontendTests.h b/tv/tuner/aidl/vts/functional/FrontendTests.h
index 8f769a0..1745f76 100644
--- a/tv/tuner/aidl/vts/functional/FrontendTests.h
+++ b/tv/tuner/aidl/vts/functional/FrontendTests.h
@@ -100,6 +100,7 @@
     void tuneTest(FrontendConfig frontendConf);
     void scanTest(FrontendConfig frontend, FrontendScanType type);
     void debugInfoTest(FrontendConfig frontendConf);
+    void maxNumberOfFrontendsTest();
 
     void setDvrTests(DvrTests* dvrTests) { mExternalDvrTests = dvrTests; }
     void setDemux(std::shared_ptr<IDemux> demux) { getDvrTests()->setDemux(demux); }
diff --git a/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.cpp b/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.cpp
index 202f83f..a042427 100644
--- a/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.cpp
+++ b/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.cpp
@@ -891,6 +891,14 @@
     mFrontendTests.debugInfoTest(frontendMap[live.frontendId]);
 }
 
+TEST_P(TunerFrontendAidlTest, maxNumberOfFrontends) {
+    description("Test Max Frontend number");
+    if (!live.hasFrontendConnection) {
+        return;
+    }
+    mFrontendTests.maxNumberOfFrontendsTest();
+}
+
 TEST_P(TunerBroadcastAidlTest, BroadcastDataFlowVideoFilterTest) {
     description("Test Video Filter functionality in Broadcast use case.");
     if (!live.hasFrontendConnection) {