1 files changed, 89 insertions, 3 deletions

diff --git a/graphics/java/android/renderscript/Allocation.java b/graphics/java/android/renderscript/Allocation.java
index f285f5b..0ea4821 100644
--- a/graphics/java/android/renderscript/Allocation.java
+++ b/graphics/java/android/renderscript/Allocation.java
@@ -22,6 +22,7 @@ import android.content.res.Resources;
 import android.content.res.AssetManager;
 import android.graphics.Bitmap;
 import android.graphics.BitmapFactory;
+import android.graphics.SurfaceTexture;
 import android.util.Log;
 import android.util.TypedValue;
 
@@ -78,6 +79,8 @@ public class Allocation extends BaseObj {
     boolean mConstrainedFace;
     boolean mConstrainedY;
     boolean mConstrainedZ;
+    boolean mReadAllowed = true;
+    boolean mWriteAllowed = true;
     int mSelectedY;
     int mSelectedZ;
     int mSelectedLOD;
@@ -127,6 +130,32 @@ public class Allocation extends BaseObj {
      */
     public static final int USAGE_GRAPHICS_RENDER_TARGET = 0x0010;
 
+    /**
+     * USAGE_GRAPHICS_SURFACE_TEXTURE_INPUT The allcation will be
+     * used with a SurfaceTexture object.  This usage will cause the
+     * allocation to be created read only.
+     *
+     * @hide
+     */
+    public static final int USAGE_GRAPHICS_SURFACE_TEXTURE_INPUT_OPAQUE = 0x0020;
+
+    /**
+     * USAGE_GRAPHICS_SURFACE_TEXTURE_INPUT The allcation will be
+     * used with a SurfaceTexture object.  This usage will cause the
+     * allocation to be created read only.
+     *
+     * @hide
+     */
+
+    public static final int USAGE_IO_INPUT = 0x0040;
+    /**
+     * USAGE_GRAPHICS_SURFACE_TEXTURE_INPUT The allcation will be
+     * used with a SurfaceTexture object.  This usage will cause the
+     * allocation to be created read only.
+     *
+     * @hide
+     */
+    public static final int USAGE_IO_OUTPUT = 0x0080;
 
     /**
      * Controls mipmap behavior when using the bitmap creation and
@@ -187,10 +216,26 @@ public class Allocation extends BaseObj {
                        USAGE_GRAPHICS_TEXTURE |
                        USAGE_GRAPHICS_VERTEX |
                        USAGE_GRAPHICS_CONSTANTS |
-                       USAGE_GRAPHICS_RENDER_TARGET)) != 0) {
+                       USAGE_GRAPHICS_RENDER_TARGET |
+                       USAGE_GRAPHICS_SURFACE_TEXTURE_INPUT_OPAQUE |
+                       USAGE_IO_INPUT |
+                       USAGE_IO_OUTPUT)) != 0) {
             throw new RSIllegalArgumentException("Unknown usage specified.");
         }
+
+        if ((usage & (USAGE_GRAPHICS_SURFACE_TEXTURE_INPUT_OPAQUE | USAGE_IO_INPUT)) != 0) {
+            mWriteAllowed = false;
+
+            if ((usage & ~(USAGE_GRAPHICS_SURFACE_TEXTURE_INPUT_OPAQUE |
+                           USAGE_IO_INPUT |
+                           USAGE_GRAPHICS_TEXTURE |
+                           USAGE_SCRIPT)) != 0) {
+                throw new RSIllegalArgumentException("Invalid usage combination.");
+            }
+        }
+
         mType = t;
+        mUsage = usage;
 
         if (t != null) {
             updateCacheInfo(t);
@@ -875,7 +920,31 @@ public class Allocation extends BaseObj {
         if (type.getID() == 0) {
             throw new RSInvalidStateException("Bad Type");
         }
-        int id = rs.nAllocationCreateTyped(type.getID(), mips.mID, usage);
+        int id = rs.nAllocationCreateTyped(type.getID(), mips.mID, usage, 0);
+        if (id == 0) {
+            throw new RSRuntimeException("Allocation creation failed.");
+        }
+        return new Allocation(id, rs, type, usage);
+    }
+
+    /**
+     * @hide
+     * This API is hidden and only intended to be used for
+     * transitional purposes.
+     *
+     * @param type renderscript type describing data layout
+     * @param mips specifies desired mipmap behaviour for the
+     *             allocation
+     * @param usage bit field specifying how the allocation is
+     *              utilized
+     */
+    static public Allocation createTyped(RenderScript rs, Type type, MipmapControl mips,
+                                         int usage, int pointer) {
+        rs.validate();
+        if (type.getID() == 0) {
+            throw new RSInvalidStateException("Bad Type");
+        }
+        int id = rs.nAllocationCreateTyped(type.getID(), mips.mID, usage, pointer);
         if (id == 0) {
             throw new RSRuntimeException("Allocation creation failed.");
         }
@@ -930,7 +999,7 @@ public class Allocation extends BaseObj {
         b.setX(count);
         Type t = b.create();
 
-        int id = rs.nAllocationCreateTyped(t.getID(), MipmapControl.MIPMAP_NONE.mID, usage);
+        int id = rs.nAllocationCreateTyped(t.getID(), MipmapControl.MIPMAP_NONE.mID, usage, 0);
         if (id == 0) {
             throw new RSRuntimeException("Allocation creation failed.");
         }
@@ -1005,6 +1074,23 @@ public class Allocation extends BaseObj {
     }
 
     /**
+     *
+     *
+     * @hide
+     *
+     */
+    public SurfaceTexture getSurfaceTexture() {
+        if ((mUsage & USAGE_GRAPHICS_SURFACE_TEXTURE_INPUT_OPAQUE) == 0) {
+            throw new RSInvalidStateException("Allocation is not a surface texture.");
+        }
+
+        int id = mRS.nAllocationGetSurfaceTextureID(getID());
+        return new SurfaceTexture(id);
+
+    }
+
+
+    /**
      * Creates a non-mipmapped renderscript allocation to use as a
      * graphics texture
      *