1 files changed, 94 insertions, 0 deletions
diff --git a/services/surfaceflinger/TextureManager.h b/services/surfaceflinger/TextureManager.h
new file mode 100644
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@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_TEXTURE_MANAGER_H
+#define ANDROID_TEXTURE_MANAGER_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES/gl.h>
+
+#include <ui/Region.h>
+
+#include <pixelflinger/pixelflinger.h>
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+class GLExtensions;
+class GraphicBuffer;
+
+// ---------------------------------------------------------------------------
+
+struct Image {
+    enum { TEXTURE_2D=0, TEXTURE_EXTERNAL=1 };
+    Image() : name(-1U), image(EGL_NO_IMAGE_KHR), width(0), height(0),
+        transform(0), dirty(1), target(TEXTURE_2D) { }
+    GLuint        name;
+    EGLImageKHR   image;
+    GLuint        width;
+    GLuint        height;
+    uint32_t      transform;
+    unsigned      dirty     : 1;
+    unsigned      target    : 1;
+};
+
+struct Texture : public Image {
+    Texture() : Image(), NPOTAdjust(0) { }
+    GLuint      potWidth;
+    GLuint      potHeight;
+    GLfloat     wScale;
+    GLfloat     hScale;
+    unsigned    NPOTAdjust  : 1;
+};
+
+// ---------------------------------------------------------------------------
+
+class TextureManager {
+    const GLExtensions& mGLExtensions;
+    static status_t initTexture(Image* texture, int32_t format);
+    static status_t initTexture(Texture* texture);
+    static bool isSupportedYuvFormat(int format);
+    static bool isYuvFormat(int format);
+    static GLenum getTextureTarget(const Image* pImage);
+public:
+
+    TextureManager();
+
+    // load bitmap data into the active buffer
+    status_t loadTexture(Texture* texture,
+            const Region& dirty, const GGLSurface& t);
+
+    // make active buffer an EGLImage if needed
+    status_t initEglImage(Image* texture,
+            EGLDisplay dpy, const sp<GraphicBuffer>& buffer);
+
+    // activate a texture
+    static void activateTexture(const Texture& texture, bool filter);
+
+    // deactivate a texture
+    static void deactivateTextures();
+};
+
+// ---------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_TEXTURE_MANAGER_H