diff --git a/tv/tuner/1.0/Android.bp b/tv/tuner/1.0/Android.bp
index b54413d..986518b 100644
--- a/tv/tuner/1.0/Android.bp
+++ b/tv/tuner/1.0/Android.bp
@@ -8,6 +8,9 @@
     },
     srcs: [
         "types.hal",
+        "IDemux.hal",
+        "IDemuxCallback.hal",
+        "IDescrambler.hal",
         "IFrontend.hal",
         "IFrontendCallback.hal",
         "ITuner.hal",
diff --git a/tv/tuner/1.0/IDemux.hal b/tv/tuner/1.0/IDemux.hal
new file mode 100644
index 0000000..938bc44
--- /dev/null
+++ b/tv/tuner/1.0/IDemux.hal
@@ -0,0 +1,37 @@
+package android.hardware.tv.tuner@1.0;
+
+import IDemuxCallback;
+
+/**
+ * Demultiplexer(Demux) takes a single multiplexed input and splits it into
+ * one or more output.
+ *
+ */
+interface IDemux {
+
+    /**
+     * Set a frontend resource as data input of the demux
+     *
+     * It is used by the client to specify a hardware frontend as data source of
+     * this demux instance. A demux instance can have only one data source.
+     *
+     * @return result Result status of the operation.
+     *         SUCCESS if successful,
+     *         INVALID_STATE if failed for wrong state.
+     *         UNKNOWN_ERROR if failed for other reasons.
+     */
+    setFrontendDataSource(FrontendId frontendId) generates (Result result);
+
+    /**
+     * Close the Demux instance
+     *
+     * It is used by the client to release the demux instance. HAL clear
+     * underneath resource. client mustn't access the instance any more.
+     *
+     * @return result Result status of the operation.
+     *         SUCCESS if successful,
+     *         UNKNOWN_ERROR if failed for other reasons.
+     */
+    close() generates (Result result);
+};
+
diff --git a/tv/tuner/1.0/IDemuxCallback.hal b/tv/tuner/1.0/IDemuxCallback.hal
new file mode 100644
index 0000000..c67c5f2
--- /dev/null
+++ b/tv/tuner/1.0/IDemuxCallback.hal
@@ -0,0 +1,11 @@
+package android.hardware.tv.tuner@1.0;
+
+interface IDemuxCallback {
+    /**
+     * Notify the client that a new filter event happened.
+     *
+     * @param filterEvent a demux filter event.
+     */
+     oneway onFilterEvent(DemuxFilterEvent filterEvent);
+};
+
diff --git a/tv/tuner/1.0/IDescrambler.hal b/tv/tuner/1.0/IDescrambler.hal
new file mode 100644
index 0000000..4d6cf3c
--- /dev/null
+++ b/tv/tuner/1.0/IDescrambler.hal
@@ -0,0 +1,35 @@
+package android.hardware.tv.tuner@1.0;
+
+/**
+ * Descrambler is used to descramble input data.
+ *
+ */
+interface IDescrambler {
+
+    /**
+     * Set a demux as source of the descrambler
+     *
+     * It is used by the client to specify a demux as source of this
+     * descrambler. A descrambler instance can have only one source, and
+     * this method can be only called once.
+     *
+     * @return result Result status of the operation.
+     *         SUCCESS if successful,
+     *         INVALID_STATE if failed for wrong state.
+     *         UNKNOWN_ERROR if failed for other reasons.
+     */
+    setDemuxSource(DemuxId demuxId) generates (Result result);
+
+    /**
+     * Release the descrambler instance
+     *
+     * It is used by the client to release the descrambler instance. HAL clear
+     * underneath resource. client mustn't access the instance any more.
+     *
+     * @return result Result status of the operation.
+     *         SUCCESS if successful,
+     *         UNKNOWN_ERROR if failed for other reasons.
+     */
+     close() generates (Result result);
+};
+
diff --git a/tv/tuner/1.0/ITuner.hal b/tv/tuner/1.0/ITuner.hal
index 5a5f547..61a9d63 100644
--- a/tv/tuner/1.0/ITuner.hal
+++ b/tv/tuner/1.0/ITuner.hal
@@ -16,6 +16,8 @@
 
 package android.hardware.tv.tuner@1.0;
 
+import IDemux;
+import IDescrambler;
 import IFrontend;
 
 /**
@@ -48,5 +50,30 @@
     openFrontendById(FrontendId frontendId)
         generates (Result result, IFrontend frontend);
 
-};
+    /**
+     * Create a new instance of Demux.
+     *
+     * It is used by the client to create a Demux instance.
+     *
+     * @return result Result status of the operation.
+     *         SUCCESS if successful,
+     *         UNKNOWN_ERROR if creation failed for other reasons.
+     * @return demuxId newly created demux id.
+     * @return demux the newly created demux interface.
+     */
+     openDemux()
+         generates (Result result, DemuxId demuxId, IDemux demux);
 
+    /**
+     * Create a new instance of Descrambler.
+     *
+     * It is used by the client to create a Descrambler instance.
+     *
+     * @return result Result status of the operation.
+     *         SUCCESS if successful,
+     *         UNKNOWN_ERROR if creation failed for other reasons.
+     * @return descrambler the newly created descrambler interface.
+     */
+     openDescrambler()
+         generates (Result result, IDescrambler descrambler);
+};
diff --git a/tv/tuner/1.0/default/Tuner.cpp b/tv/tuner/1.0/default/Tuner.cpp
index 67ec754..6bb7aa9 100644
--- a/tv/tuner/1.0/default/Tuner.cpp
+++ b/tv/tuner/1.0/default/Tuner.cpp
@@ -28,6 +28,8 @@
 namespace V1_0 {
 namespace implementation {
 
+using ::android::hardware::tv::tuner::V1_0::DemuxId;
+
 Tuner::Tuner() {
     // Static Frontends array to maintain local frontends information
     // Array index matches their FrontendId in the default impl
@@ -71,6 +73,25 @@
     return Void();
 }
 
+Return<void> Tuner::openDemux(openDemux_cb _hidl_cb) {
+    ALOGV("%s", __FUNCTION__);
+
+    sp<IDemux> demux;
+    DemuxId demuxId = 0;
+
+    _hidl_cb(Result::SUCCESS, demuxId, demux);
+    return Void();
+}
+
+Return<void> Tuner::openDescrambler(openDescrambler_cb _hidl_cb) {
+    ALOGV("%s", __FUNCTION__);
+
+    sp<IDescrambler> descrambler;
+
+    _hidl_cb(Result::SUCCESS, descrambler);
+    return Void();
+}
+
 }  // namespace implementation
 }  // namespace V1_0
 }  // namespace tuner
diff --git a/tv/tuner/1.0/default/Tuner.h b/tv/tuner/1.0/default/Tuner.h
index 2152c89..1ca7671 100644
--- a/tv/tuner/1.0/default/Tuner.h
+++ b/tv/tuner/1.0/default/Tuner.h
@@ -37,6 +37,10 @@
     virtual Return<void> openFrontendById(uint32_t frontendId,
                                           openFrontendById_cb _hidl_cb) override;
 
+    virtual Return<void> openDemux(openDemux_cb _hidl_cb) override;
+
+    virtual Return<void> openDescrambler(openDescrambler_cb _hidl_cb) override;
+
   private:
     virtual ~Tuner();
     // Static mFrontends array to maintain local frontends information
diff --git a/tv/tuner/1.0/types.hal b/tv/tuner/1.0/types.hal
index 1ca7fda..3fa9641 100644
--- a/tv/tuner/1.0/types.hal
+++ b/tv/tuner/1.0/types.hal
@@ -137,3 +137,53 @@
      */
     LOST_LOCK,
 };
+
+/* Demux ID is used to associate with a hardware demux resource. */
+typedef uint32_t DemuxId;
+
+/* Filter ID is used to associate with a hardware filter resource. */
+typedef uint32_t DemuxFilterId;
+
+/**
+ * Filter Type according to ISO/IEC 13818-1
+ */
+@export
+enum DemuxFilterType : uint32_t {
+    /**
+     * A filter to filter section data out from input stream.
+     */
+    SECTION,
+    /**
+     * A filter to filter PES data out from input stream.
+     */
+    PES,
+    /**
+     * A filter to filter TS payload out from input stream.
+     */
+    TS,
+    /**
+     * A filter to filter Audio Metadata out from input stream.
+     */
+    AUDIO,
+    /**
+     * A filter to filter Vidoe Metadata out from input stream.
+     */
+    VIDEO,
+    /**
+     * A filter to set PCR channel from input stream.
+     */
+    PCR,
+    /**
+     * A filter to filter data directly to output buffer for record.
+     */
+    RECORD,
+};
+
+/**
+ * Filter Event.
+ */
+struct DemuxFilterEvent {
+     DemuxFilterId filterId;
+     DemuxFilterType filterType;
+};
+