Add tuner legacy HIDL HAL support.

The AIDL HAL based solution will be the default implementation. The
tuner service will only create the legacy HIDL HAL based implementation
when the HIDL HAL is available.

Bug: 191825295
Test: atest android.media.tv.tuner.cts on both AIDL and HIDL HAL.
Test: sampletunertvinput
Change-Id: I8436ae80721ad943c60b5814b535f3b87a54ccda
diff --git a/services/tuner/hidl/TunerHidlDescrambler.cpp b/services/tuner/hidl/TunerHidlDescrambler.cpp
new file mode 100644
index 0000000..dd8cd9c
--- /dev/null
+++ b/services/tuner/hidl/TunerHidlDescrambler.cpp
@@ -0,0 +1,149 @@
+/**
+ * Copyright 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "TunerHidlDescrambler"
+
+#include "TunerHidlDescrambler.h"
+
+#include <aidl/android/hardware/tv/tuner/Result.h>
+
+#include "TunerHidlDemux.h"
+#include "TunerHidlFilter.h"
+
+using ::aidl::android::hardware::tv::tuner::Result;
+
+using HidlResult = ::android::hardware::tv::tuner::V1_0::Result;
+
+using namespace std;
+
+namespace aidl {
+namespace android {
+namespace media {
+namespace tv {
+namespace tuner {
+
+TunerHidlDescrambler::TunerHidlDescrambler(sp<HidlIDescrambler> descrambler) {
+    mDescrambler = descrambler;
+}
+
+TunerHidlDescrambler::~TunerHidlDescrambler() {
+    mDescrambler = nullptr;
+}
+
+::ndk::ScopedAStatus TunerHidlDescrambler::setDemuxSource(
+        const shared_ptr<ITunerDemux>& in_tunerDemux) {
+    if (mDescrambler == nullptr) {
+        ALOGE("IDescrambler is not initialized");
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(
+                static_cast<int32_t>(Result::UNAVAILABLE));
+    }
+
+    HidlResult res = mDescrambler->setDemuxSource(
+            static_cast<TunerHidlDemux*>(in_tunerDemux.get())->getId());
+    if (res != HidlResult::SUCCESS) {
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(static_cast<int32_t>(res));
+    }
+    return ::ndk::ScopedAStatus::ok();
+}
+
+::ndk::ScopedAStatus TunerHidlDescrambler::setKeyToken(const vector<uint8_t>& in_keyToken) {
+    if (mDescrambler == nullptr) {
+        ALOGE("IDescrambler is not initialized");
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(
+                static_cast<int32_t>(Result::UNAVAILABLE));
+    }
+
+    HidlResult res = mDescrambler->setKeyToken(in_keyToken);
+    if (res != HidlResult::SUCCESS) {
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(static_cast<int32_t>(res));
+    }
+    return ::ndk::ScopedAStatus::ok();
+}
+
+::ndk::ScopedAStatus TunerHidlDescrambler::addPid(
+        const DemuxPid& in_pid, const shared_ptr<ITunerFilter>& in_optionalSourceFilter) {
+    if (mDescrambler == nullptr) {
+        ALOGE("IDescrambler is not initialized");
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(
+                static_cast<int32_t>(Result::UNAVAILABLE));
+    }
+
+    sp<HidlIFilter> halFilter =
+            (in_optionalSourceFilter == nullptr)
+                    ? nullptr
+                    : static_cast<TunerHidlFilter*>(in_optionalSourceFilter.get())->getHalFilter();
+    HidlResult res = mDescrambler->addPid(getHidlDemuxPid(in_pid), halFilter);
+    if (res != HidlResult::SUCCESS) {
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(static_cast<int32_t>(res));
+    }
+    return ::ndk::ScopedAStatus::ok();
+}
+
+::ndk::ScopedAStatus TunerHidlDescrambler::removePid(
+        const DemuxPid& in_pid, const shared_ptr<ITunerFilter>& in_optionalSourceFilter) {
+    if (mDescrambler == nullptr) {
+        ALOGE("IDescrambler is not initialized");
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(
+                static_cast<int32_t>(Result::UNAVAILABLE));
+    }
+
+    sp<HidlIFilter> halFilter =
+            (in_optionalSourceFilter == nullptr)
+                    ? nullptr
+                    : static_cast<TunerHidlFilter*>(in_optionalSourceFilter.get())->getHalFilter();
+    HidlResult res = mDescrambler->removePid(getHidlDemuxPid(in_pid), halFilter);
+    if (res != HidlResult::SUCCESS) {
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(static_cast<int32_t>(res));
+    }
+    return ::ndk::ScopedAStatus::ok();
+}
+
+::ndk::ScopedAStatus TunerHidlDescrambler::close() {
+    if (mDescrambler == nullptr) {
+        ALOGE("IDescrambler is not initialized.");
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(
+                static_cast<int32_t>(Result::UNAVAILABLE));
+    }
+
+    HidlResult res = mDescrambler->close();
+    mDescrambler = nullptr;
+
+    if (res != HidlResult::SUCCESS) {
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(static_cast<int32_t>(res));
+    }
+    return ::ndk::ScopedAStatus::ok();
+}
+
+HidlDemuxPid TunerHidlDescrambler::getHidlDemuxPid(const DemuxPid& pid) {
+    HidlDemuxPid hidlPid;
+    switch (pid.getTag()) {
+    case DemuxPid::tPid: {
+        hidlPid.tPid((uint16_t)pid.get<DemuxPid::Tag::tPid>());
+        break;
+    }
+    case DemuxPid::mmtpPid: {
+        hidlPid.mmtpPid((uint16_t)pid.get<DemuxPid::Tag::mmtpPid>());
+        break;
+    }
+    }
+    return hidlPid;
+}
+
+}  // namespace tuner
+}  // namespace tv
+}  // namespace media
+}  // namespace android
+}  // namespace aidl