Add an initial Demxu client and Filter Client interface

Test: make libmedia_tv_tuner
Bug: 174095851

Change-Id: I8af379bf2810bee3dedf69ea0187766300b05370
diff --git a/media/jni/tuner/DemuxClient.cpp b/media/jni/tuner/DemuxClient.cpp
new file mode 100644
index 0000000..abf7d56
--- /dev/null
+++ b/media/jni/tuner/DemuxClient.cpp
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2020 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 "FrontendClient"
+
+#include <android-base/logging.h>
+#include <utils/Log.h>
+
+#include "DemuxClient.h"
+
+using ::aidl::android::media::tv::tuner::TunerFrontendSettings;
+
+using ::android::hardware::tv::tuner::V1_0::Result;
+
+namespace android {
+
+/////////////// DemuxClient ///////////////////////
+
+// TODO: pending aidl interface
+DemuxClient::DemuxClient() {
+    //mTunerDemux = tunerDemux;
+}
+
+DemuxClient::~DemuxClient() {
+    //mTunerDemux = NULL;
+    mDemux = NULL;
+}
+
+// TODO: remove after migration to Tuner Service is done.
+void DemuxClient::setHidlDemux(sp<IDemux> demux) {
+    mDemux = demux;
+}
+
+Result DemuxClient::setFrontendDataSource(sp<FrontendClient> tunerFrontend) {
+    // TODO: pending aidl interface
+    /*if (mTunerDemux != NULL) {
+        // TODO: handle error message
+        mTunerDemux->setFrontendDataSource(tunerFrontend->getAidlFrontend());
+        return (int) Result::SUCCESS;
+    }*/
+
+    if (mDemux != NULL) {
+        Result res = mDemux->setFrontendDataSource(tunerFrontend->getId());
+        return res;
+    }
+
+    return Result::INVALID_STATE;
+}
+
+//FilterClient openFilter(int mainType, int subType, int bufferSize, FilterClientCallback cb);
+
+int DemuxClient::getAvSyncHwId(FilterClient /*tunerFilter*/) {
+    return 0;
+}
+
+long DemuxClient::getAvSyncTime(int avSyncHwId) {
+    // pending aidl interface
+
+    if (mDemux != NULL) {
+        uint64_t time;
+        Result res;
+        mDemux->getAvSyncTime(static_cast<uint32_t>(avSyncHwId),
+                [&](Result r, uint64_t ts) {
+                    res = r;
+                    time = ts;
+                });
+        if (res == Result::SUCCESS) {
+            return (long) time;
+        }
+    }
+
+    return -1;
+}
+
+//DvrClient openDvr(int dvbType, int bufferSize, DvrClientCallback cb);
+
+Result DemuxClient::connectCiCam(int ciCamId) {
+    // pending aidl interface
+
+    if (mDemux != NULL) {
+        return mDemux->connectCiCam(static_cast<uint32_t>(ciCamId));
+    }
+
+    return Result::INVALID_STATE;
+}
+
+Result DemuxClient::disconnectCiCam() {
+    // pending aidl interface
+
+    if (mDemux != NULL) {
+        return mDemux->disconnectCiCam();
+    }
+
+    return Result::INVALID_STATE;
+}
+
+Result DemuxClient::close() {
+    // pending aidl interface
+
+    if (mDemux != NULL) {
+        Result res = mDemux->close();
+        if (res == Result::SUCCESS) {
+            mDemux = NULL;
+        }
+        return res;
+    }
+
+    return Result::INVALID_STATE;
+}
+}  // namespace android