commit f171ab6da9cf9793093e50947aacdab8f2b0c9b2
author Mathias Agopian <mathias@google.com> Thu Oct 13 16:02:48 2011 -0700
committer Mathias Agopian <mathias@google.com> Fri Oct 14 14:32:48 2011 -0700
tree 35cf7565261f9b2bf0019e7d67439ae4188b7e2b
parent 5850db5e08feeae87a8c0ef264ef86b5e43f4cfc

Add a LayerScreenshot

A LayerScreenshot is a special type of layer that contains a screenshot of
the screen acquired when its created. It works just like LayerDim.

Bug: 5446982
Change-Id: I7814aff2380e7e146937f2b641907be2a30c76cc

services/surfaceflinger/SurfaceFlinger.h

diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index 0e642c1..3c8f4e5 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -49,6 +49,7 @@
 class FreezeLock;
 class Layer;
 class LayerDim;
+class LayerScreenshot;
 struct surface_flinger_cblk_t;
 
 #define LIKELY( exp )       (__builtin_expect( (exp) != 0, true  ))
@@ -186,6 +187,15 @@
             void                        screenReleased(DisplayID dpy);
             void                        screenAcquired(DisplayID dpy);
 
+            status_t renderScreenToTexture(DisplayID dpy,
+                    GLuint* textureName, GLfloat* uOut, GLfloat* vOut);
+
+            status_t postMessageAsync(const sp<MessageBase>& msg,
+                    nsecs_t reltime=0, uint32_t flags = 0);
+
+            status_t postMessageSync(const sp<MessageBase>& msg,
+                    nsecs_t reltime=0, uint32_t flags = 0);
+
     status_t removeLayer(const sp<LayerBase>& layer);
     status_t addLayer(const sp<LayerBase>& layer);
     status_t invalidateLayerVisibility(const sp<LayerBase>& layer);
@@ -195,6 +205,18 @@
 
     GLuint getProtectedTexName() const { return mProtectedTexName; }
 
+
+    class MessageDestroyGLTexture : public MessageBase {
+        GLuint texture;
+    public:
+        MessageDestroyGLTexture(GLuint texture) : texture(texture) { }
+        virtual bool handler() {
+            glDeleteTextures(1, &texture);
+            return true;
+        }
+    };
+
+
 private:
     // DeathRecipient interface
     virtual void binderDied(const wp<IBinder>& who);
@@ -204,7 +226,6 @@
     friend class LayerBase;
     friend class LayerBaseClient;
     friend class Layer;
-    friend class LayerDim;
 
     sp<ISurface> createSurface(
             ISurfaceComposerClient::surface_data_t* params,
@@ -222,6 +243,10 @@
             const sp<Client>& client, DisplayID display,
             uint32_t w, uint32_t h, uint32_t flags);
 
+    sp<LayerScreenshot> createScreenshotSurface(
+            const sp<Client>& client, DisplayID display,
+            uint32_t w, uint32_t h, uint32_t flags);
+
     status_t removeSurface(const sp<Client>& client, SurfaceID sid);
     status_t destroySurface(const wp<LayerBaseClient>& layer);
     uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s);
@@ -329,12 +354,6 @@
 
     mutable     MessageQueue    mEventQueue;
 
-    status_t postMessageAsync(const sp<MessageBase>& msg,
-            nsecs_t reltime=0, uint32_t flags = 0);
-
-    status_t postMessageSync(const sp<MessageBase>& msg,
-            nsecs_t reltime=0, uint32_t flags = 0);
-
                 // access must be protected by mStateLock
     mutable     Mutex                   mStateLock;
                 State                   mCurrentState;