From 7c3d92ed0be26bf4955536cb5bf947c05df4932b Mon Sep 17 00:00:00 2001
From: Naomi Luis <nluis@quicinc.com>
Date: Thu, 19 May 2011 13:53:49 -0700
Subject: [PATCH] libhwcomposer: Handle HDMI disconnect event

- Inform the gralloc of the HDMI status.
- If the HDMI is disconnected, close the overlay and also inform the
gralloc that video mirroring has stopped.

Change-Id: Ie89ffe860c0f9c9142d6c7f5d7a6c555884561ce
CRs-fixed: 286954
---
 libhwcomposer/hwcomposer.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/libhwcomposer/hwcomposer.cpp b/libhwcomposer/hwcomposer.cpp
index 78c15a6..afea6d4 100755
--- a/libhwcomposer/hwcomposer.cpp
+++ b/libhwcomposer/hwcomposer.cpp
@@ -124,9 +124,25 @@ static void dump_layer(hwc_layer_t const* l) {
 
 static void hwc_enableHDMIOutput(hwc_composer_device_t *dev, bool enable) {
     hwc_context_t* ctx = (hwc_context_t*)(dev);
+    private_hwc_module_t* hwcModule = reinterpret_cast<private_hwc_module_t*>(
+                                                           dev->common.module);
+    framebuffer_device_t *fbDev = hwcModule->fbDevice;
+    if (fbDev) {
+        fbDev->enableHDMIOutput(fbDev, enable);
+    }
+
     if(ctx && ctx->mOverlayLibObject) {
         overlay::Overlay *ovLibObject = ctx->mOverlayLibObject;
         ovLibObject->setHDMIStatus(enable);
+
+        if (!enable) {
+            // Close the overlay channels if HDMI is disconnected
+            ovLibObject->closeChannel();
+            // Inform the gralloc that video mirroring is stopped
+            framebuffer_device_t *fbDev = hwcModule->fbDevice;
+            if (fbDev)
+                fbDev->videoOverlayStarted(fbDev, false);
+        }
     }
 }