From 191f76bb3803eddbf20105fe5ebaf839b61e1623 Mon Sep 17 00:00:00 2001
From: Ray Chin <raychin@google.com>
Date: Tue, 13 Dec 2022 17:50:59 +0800
Subject: [PATCH] Add new DemuxFilterStatus NO_DATA

Bug: 260651195
Test: test on cf_x86_tv-userdebug
Change-Id: I56619579ebf09b49d288254f2d77320cd5575d69
---
 .../current/android/hardware/tv/tuner/DemuxFilterStatus.aidl | 1 +
 .../aidl/android/hardware/tv/tuner/DemuxFilterStatus.aidl    | 5 +++++
 tv/tuner/aidl/default/Filter.cpp                             | 2 ++
 3 files changed, 8 insertions(+)

diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/DemuxFilterStatus.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/DemuxFilterStatus.aidl
index 36b40ea5b9..1dc593ac18 100644
--- a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/DemuxFilterStatus.aidl
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/DemuxFilterStatus.aidl
@@ -39,4 +39,5 @@ enum DemuxFilterStatus {
   LOW_WATER = 2,
   HIGH_WATER = 4,
   OVERFLOW = 8,
+  NO_DATA = 16,
 }
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/DemuxFilterStatus.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/DemuxFilterStatus.aidl
index e6f3b63b95..45a473ea5f 100644
--- a/tv/tuner/aidl/android/hardware/tv/tuner/DemuxFilterStatus.aidl
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/DemuxFilterStatus.aidl
@@ -46,4 +46,9 @@ enum DemuxFilterStatus {
      * discarded.
      */
     OVERFLOW = 1 << 3,
+
+    /**
+     * Indicating there is no data coming to the filter.
+     */
+    NO_DATA = 1 << 4,
 }
diff --git a/tv/tuner/aidl/default/Filter.cpp b/tv/tuner/aidl/default/Filter.cpp
index ade265ca26..59e301dccb 100644
--- a/tv/tuner/aidl/default/Filter.cpp
+++ b/tv/tuner/aidl/default/Filter.cpp
@@ -691,6 +691,8 @@ DemuxFilterStatus Filter::checkFilterStatusChange(uint32_t availableToWrite,
         return DemuxFilterStatus::OVERFLOW;
     } else if (availableToRead > highThreshold) {
         return DemuxFilterStatus::HIGH_WATER;
+    } else if (availableToRead == 0) {
+        return DemuxFilterStatus::NO_DATA;
     } else if (availableToRead < lowThreshold) {
         return DemuxFilterStatus::LOW_WATER;
     }