From 1449ece6e22b8fa6c19eece246d3965bedd1489a Mon Sep 17 00:00:00 2001
From: Anthony Ryan <anthonyryan1@gmail.com>
Date: Tue, 9 Nov 2021 21:16:19 -0500
Subject: [PATCH] [RFC] InputCEC activateSource on receivedInput

My long term goal can be described as two separate features:
1. When Plex Media Player activates the screensaver, all CEC devices (Receiver/Soundbar,
   Projector/TV) power off
2. When Plex Media Player deactivates the screensaver (eg, by keyboard or remote input) all CEC
   devices power on and the inputs are changed if necessary

This pull request is a first attempt at accomplishing device power on.

My first goal here was to connect it to the PowerComponent screenSaverEnabled and
screenSaverDisabled signals, but the comments in PowerComenent.h seem to indicate that those are
deprecated and not funcitonal.

Without having those to rely on, I have instead connected the activateSource method to keyboard
input. This is suboptimal because we're flooding the CEC devices with unnecessary signals on
every keystroke.

I wanted to get the discussion rolling on how to implement this. Is there any upcoming replacement
for the screensaver signals that I could connect this to instead?

I look forward to your feedback.
---
 src/input/InputCEC.cpp       | 25 ++++++++++++++++++++++++-
 src/input/InputCEC.h         |  5 +++++
 src/input/InputComponent.cpp |  7 ++++++-
 3 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/src/input/InputCEC.cpp b/src/input/InputCEC.cpp
index 1a379100a..50e99b43b 100644
--- a/src/input/InputCEC.cpp
+++ b/src/input/InputCEC.cpp
@@ -67,6 +67,12 @@ bool InputCEC::initInput()
   return retVal;
 }
 
+//////////////////////////////////////////////////////////////////////////////////////////////////
+void InputCEC::activateSource()
+{
+  QMetaObject::invokeMethod(m_cecWorker, "activateSource", Qt::QueuedConnection);
+}
+
 /////////////////////////////////////////////////////////////////////////////////////////
 InputCEC::~InputCEC()
 {
@@ -118,6 +124,9 @@ bool InputCECWorker::init()
   // check for attached adapters
   checkAdapter();
 
+  // if necessary, wake device(s)
+  activateSource();
+
   // Start a timer to keep track of attached/removed adapters
   m_timer = new QTimer(nullptr);
   m_timer->setInterval(10 * 1000);
@@ -184,7 +193,7 @@ void InputCECWorker::closeAdapter()
 void InputCECWorker::checkAdapter()
 {
   if (m_adapterPort.isEmpty())
-  {    
+  {
     if (m_adapter)
       m_adapter->Close();
 
@@ -192,6 +201,20 @@ void InputCECWorker::checkAdapter()
   }
 }
 
+///////////////////////////////////////////////////////////////////////////////////////////////////
+void InputCECWorker::activateSource()
+{
+  if (!SettingsComponent::Get().value(SETTINGS_SECTION_CEC, "activatesource").toBool())
+  {
+    return;
+  }
+
+  // Check if a tv has powered on
+  QLOG_INFO() << "CEC activateSource changing input";
+  m_adapter->SetActiveSource();
+
+}
+
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 void InputCECWorker::sendReceivedInput(const QString &source, const QString &keycode, InputBase::InputkeyState keyState)
 {
diff --git a/src/input/InputCEC.h b/src/input/InputCEC.h
index 25158db44..ebe395cef 100644
--- a/src/input/InputCEC.h
+++ b/src/input/InputCEC.h
@@ -17,6 +17,8 @@ class InputCECWorker;
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 class InputCEC : public InputBase
 {
+    Q_OBJECT
+
 public:
   explicit InputCEC(QObject* parent);
   ~InputCEC();
@@ -24,6 +26,8 @@ class InputCEC : public InputBase
   const char* inputName() override { return CEC_INPUT_NAME; }
   bool initInput() override;
 
+public slots:
+    void activateSource();
 
 private:
   QThread* m_cecThread;
@@ -42,6 +46,7 @@ Q_OBJECT
   Q_SLOT bool init();
   Q_SIGNAL void receivedInput(const QString& source, const QString& keycode, InputBase::InputkeyState keyState);
   Q_SLOT void closeCec();
+  Q_SLOT void activateSource();
 
 public slots:
   void checkAdapter();
diff --git a/src/input/InputComponent.cpp b/src/input/InputComponent.cpp
index fc47ec139..53cb0c241 100644
--- a/src/input/InputComponent.cpp
+++ b/src/input/InputComponent.cpp
@@ -99,7 +99,12 @@ bool InputComponent::componentInitialize()
 #endif
 #ifdef HAVE_CEC
   if (SettingsComponent::Get().value(SETTINGS_SECTION_CEC, "enable").toBool())
-    addInput(new InputCEC(this));
+  {
+    InputCEC* cec = new InputCEC(this);
+    addInput(cec);
+    connect(&InputKeyboard::Get(), &InputKeyboard::receivedInput,
+            cec, &InputCEC::activateSource);
+  }
 #endif
 
   return true;