commit b8f58e2cf28c2f51f42ba8082bcddd4b6ac75778
author Saurabh Shah <saurshah@codeaurora.org> Thu Sep 26 16:20:07 2013 -0700
committer Saurabh Shah <saurshah@codeaurora.org> Tue Nov 19 12:55:03 2013 -0800
tree f74bb9b8e1ba9a733a46c8c1906c555e92bad862
parent 9b54c0d18028860cf11d41a889b52d9bb17f0e70

overlay: Add support for using scalar calculations

Add support for using scalar calculations from custom library.
The calculation will override pipe configurations if required on
basis of format, scaling, split display etc.

Change-Id: I53c73431b70b5b339ad09c19ac8792f0fc96aaaa

liboverlay/overlay.cpp

diff --git a/liboverlay/overlay.cpp b/liboverlay/overlay.cpp
index b095e9e..9222af5 100644
--- a/liboverlay/overlay.cpp
+++ b/liboverlay/overlay.cpp
@@ -27,16 +27,23 @@
 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
+#include <dlfcn.h>
 #include "overlay.h"
 #include "pipes/overlayGenPipe.h"
 #include "mdp_version.h"
 #include "qdMetaData.h"
 
+#ifdef USES_QSEED_SCALAR
+#include <scale/scale.h>
+using namespace scale;
+#endif
+
 #define PIPE_DEBUG 0
 
 namespace overlay {
 using namespace utils;
 
+
 Overlay::Overlay() {
     PipeBook::NUM_PIPES = qdutils::MDPVersion::getInstance().getTotalPipes();
     for(int i = 0; i < PipeBook::NUM_PIPES; i++) {
@@ -44,12 +51,14 @@
     }
 
     mDumpStr[0] = '\0';
+    initScalar();
 }
 
 Overlay::~Overlay() {
     for(int i = 0; i < PipeBook::NUM_PIPES; i++) {
         mPipeBook[i].destroy();
     }
+    destroyScalar();
 }
 
 void Overlay::configBegin() {
@@ -60,6 +69,13 @@
     }
     sForceSetBitmap = 0;
     mDumpStr[0] = '\0';
+
+#ifdef USES_QSEED_SCALAR
+    Scale *scalar = getScalar();
+    if(scalar) {
+        scalar->configBegin();
+    }
+#endif
 }
 
 void Overlay::configDone() {
@@ -81,6 +97,13 @@
     }
     dump();
     PipeBook::save();
+
+#ifdef USES_QSEED_SCALAR
+    Scale *scalar = getScalar();
+    if(scalar) {
+        scalar->configDone();
+    }
+#endif
 }
 
 eDest Overlay::nextPipe(eMdpPipeType type, int dpy, int mixer) {
@@ -381,6 +404,42 @@
     }
 }
 
+void Overlay::initScalar() {
+#ifdef USES_QSEED_SCALAR
+    if(sLibScaleHandle == NULL) {
+        sLibScaleHandle = dlopen("libscale.so", RTLD_NOW);
+    }
+
+    if(sLibScaleHandle) {
+        if(sScale == NULL) {
+            Scale* (*getInstance)();
+            *(void **) &getInstance = dlsym(sLibScaleHandle, "getInstance");
+            if(getInstance) {
+                sScale = getInstance();
+            }
+        }
+    }
+#endif
+}
+
+void Overlay::destroyScalar() {
+#ifdef USES_QSEED_SCALAR
+    if(sLibScaleHandle) {
+        if(sScale) {
+            void (*destroyInstance)(Scale*);
+            *(void **) &destroyInstance = dlsym(sLibScaleHandle,
+                    "destroyInstance");
+            if(destroyInstance) {
+                destroyInstance(sScale);
+                sScale = NULL;
+            }
+        }
+        dlclose(sLibScaleHandle);
+        sLibScaleHandle = NULL;
+    }
+#endif
+}
+
 void Overlay::PipeBook::init() {
     mPipe = NULL;
     mDisplay = DPY_UNUSED;
@@ -406,5 +465,7 @@
 int Overlay::PipeBook::sAllocatedBitmap = 0;
 utils::eMdpPipeType Overlay::PipeBook::pipeTypeLUT[utils::OV_MAX] =
     {utils::OV_MDP_PIPE_ANY};
+void *Overlay::sLibScaleHandle = NULL;
+scale::Scale *Overlay::sScale = NULL;
 
 }; // namespace overlay