From 65e7aa56f56097418d617663683544c25b3988ea Mon Sep 17 00:00:00 2001
From: Jason Sams <rjsams@android.com>
Date: Thu, 24 Sep 2009 17:38:20 -0700
Subject: Implement pause/resume for the RS thread.

---
 libs/rs/rsContext.cpp | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

(limited to 'libs/rs/rsContext.cpp')

diff --git a/libs/rs/rsContext.cpp b/libs/rs/rsContext.cpp
index e3236c4b921d..2fe762c3df30 100644
--- a/libs/rs/rsContext.cpp
+++ b/libs/rs/rsContext.cpp
@@ -251,7 +251,7 @@ void * Context::threadProc(void *vrsc)
          mDraw &= (rsc->mRootScript.get() != NULL);
 
          if (mDraw) {
-             mDraw = rsc->runRootScript();
+             mDraw = rsc->runRootScript() && !rsc->mPaused;
              if (rsc->logTimes) {
                  rsc->timerSet(RS_TIMER_CLEAR_SWAP);
              }
@@ -285,6 +285,7 @@ Context::Context(Device *dev, Surface *sur, bool useDepth)
     mRunning = false;
     mExit = false;
     mUseDepth = useDepth;
+    mPaused = false;
 
     int status;
     pthread_attr_t threadAttr;
@@ -328,6 +329,7 @@ Context::~Context()
 {
     LOGV("Context::~Context");
     mExit = true;
+    mPaused = false;
     void *res;
 
     mIO.shutdown();
@@ -342,6 +344,16 @@ Context::~Context()
     objDestroyOOBDestroy();
 }
 
+void Context::pause()
+{
+    mPaused = true;
+}
+
+void Context::resume()
+{
+    mPaused = false;
+}
+
 void Context::setRootScript(Script *s)
 {
     mRootScript.set(s);
@@ -578,6 +590,16 @@ void rsi_ContextSetDefineI32(Context *rsc, const char* name, int32_t value)
     rsc->addFloatDefine(name, value);
 }
 
+void rsi_ContextPause(Context *rsc)
+{
+    rsc->pause();
+}
+
+void rsi_ContextResume(Context *rsc)
+{
+    rsc->resume();
+}
+
 }
 }
 
-- 
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