display: Add binder interface to pause/resume WFD
- Client can call this when it want to pause/resume wfd
- Calling this will make sure after pause, black screen
is shown on the sink
- Currently used by the SecureDisplay module
Change-Id: If618edf76a82abe49fb676d3845ca1f1d5a8bf25
diff --git a/libhwcomposer/hwc_uevents.cpp b/libhwcomposer/hwc_uevents.cpp
index 51e5526..9111826 100644
--- a/libhwcomposer/hwc_uevents.cpp
+++ b/libhwcomposer/hwc_uevents.cpp
@@ -1,7 +1,7 @@
/*
* Copyright (C) 2010 The Android Open Source Project
- * Copyright (C) 2012, The Linux Foundation. All rights reserved.
+ * Copyright (C) 2012-14, The Linux Foundation. All rights reserved.
*
* Not a Contribution, Apache license notifications and license are
* retained for attribution purposes only.
@@ -117,6 +117,58 @@
return -1;
}
+void handle_pause(hwc_context_t* ctx, int dpy) {
+ {
+ Locker::Autolock _l(ctx->mDrawLock);
+ ctx->dpyAttr[dpy].isActive = true;
+ ctx->dpyAttr[dpy].isPause = true;
+ ctx->proc->invalidate(ctx->proc);
+ }
+ usleep(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period
+ * 2 / 1000);
+ // At this point all the pipes used by External have been
+ // marked as UNSET.
+ {
+ Locker::Autolock _l(ctx->mDrawLock);
+ // Perform commit to unstage the pipes.
+ if (!Overlay::displayCommit(ctx->dpyAttr[dpy].fd)) {
+ ALOGE("%s: display commit fail! for %d dpy",
+ __FUNCTION__, dpy);
+ }
+ }
+ return;
+}
+
+void handle_resume(hwc_context_t* ctx, int dpy) {
+ //Treat Resume as Online event
+ //Since external didnt have any pipes, force primary to give up
+ //its pipes; we don't allow inter-mixer pipe transfers.
+ {
+ Locker::Autolock _l(ctx->mDrawLock);
+
+ // A dynamic resolution change (DRC) can be made for a WiFi
+ // display. In order to support the resolution change, we
+ // need to reconfigure the corresponding display attributes.
+ // Since DRC is only on WiFi display, we only need to call
+ // configure() on the VirtualDisplay device.
+ if(dpy == HWC_DISPLAY_VIRTUAL)
+ ctx->mVirtualDisplay->configure();
+
+ ctx->dpyAttr[dpy].isConfiguring = true;
+ ctx->dpyAttr[dpy].isActive = true;
+ ctx->proc->invalidate(ctx->proc);
+ }
+ usleep(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period
+ * 2 / 1000);
+ //At this point external has all the pipes it would need.
+ {
+ Locker::Autolock _l(ctx->mDrawLock);
+ ctx->dpyAttr[dpy].isPause = false;
+ ctx->proc->invalidate(ctx->proc);
+ }
+ return;
+}
+
static void handle_uevent(hwc_context_t* ctx, const char* udata, int len)
{
bool bpanelReset = getPanelResetStatus(ctx, udata, len);
@@ -267,25 +319,8 @@
case EXTERNAL_PAUSE:
{ // pause case
ALOGD("%s Received Pause event",__FUNCTION__);
- {
- Locker::Autolock _l(ctx->mDrawLock);
- ctx->dpyAttr[dpy].isActive = true;
- ctx->dpyAttr[dpy].isPause = true;
- ctx->proc->invalidate(ctx->proc);
- }
- usleep(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period
- * 2 / 1000);
- // At this point all the pipes used by External have been
- // marked as UNSET.
- {
- Locker::Autolock _l(ctx->mDrawLock);
- // Perform commit to unstage the pipes.
- if (!Overlay::displayCommit(ctx->dpyAttr[dpy].fd)) {
- ALOGE("%s: display commit fail! for %d dpy",
- __FUNCTION__, dpy);
- }
- }
- break;
+ handle_pause(ctx, dpy);
+ break;
}
case EXTERNAL_RESUME:
{ // resume case
@@ -293,29 +328,7 @@
//Treat Resume as Online event
//Since external didnt have any pipes, force primary to give up
//its pipes; we don't allow inter-mixer pipe transfers.
- {
- Locker::Autolock _l(ctx->mDrawLock);
-
- // A dynamic resolution change (DRC) can be made for a WiFi
- // display. In order to support the resolution change, we
- // need to reconfigure the corresponding display attributes.
- // Since DRC is only on WiFi display, we only need to call
- // configure() on the VirtualDisplay device.
- if(dpy == HWC_DISPLAY_VIRTUAL)
- ctx->mVirtualDisplay->configure();
-
- ctx->dpyAttr[dpy].isConfiguring = true;
- ctx->dpyAttr[dpy].isActive = true;
- ctx->proc->invalidate(ctx->proc);
- }
- usleep(ctx->dpyAttr[HWC_DISPLAY_PRIMARY].vsync_period
- * 2 / 1000);
- //At this point external has all the pipes it would need.
- {
- Locker::Autolock _l(ctx->mDrawLock);
- ctx->dpyAttr[dpy].isPause = false;
- ctx->proc->invalidate(ctx->proc);
- }
+ handle_resume(ctx, dpy);
break;
}
default: