move native services under services/

moved surfaceflinger, audioflinger, cameraservice

all native services should now reside in this location.

Change-Id: Icd7336f7289db35df9c8c1857a5122bb8a6f1c86

1 files changed, 829 insertions, 0 deletions

diff --git a/services/surfaceflinger/LayerBase.cpp b/services/surfaceflinger/LayerBase.cpp
new file mode 100644
index 0000000..a8b735e
--- /dev/null
+++ b/services/surfaceflinger/LayerBase.cpp
@@ -0,0 +1,829 @@
+/*
+ * Copyright (C) 2007 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.
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+#include <utils/Log.h>
+#include <binder/IPCThreadState.h>
+#include <binder/IServiceManager.h>
+
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+
+#include <hardware/hardware.h>
+
+#include "clz.h"
+#include "LayerBase.h"
+#include "SurfaceFlinger.h"
+#include "DisplayHardware/DisplayHardware.h"
+
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+const uint32_t LayerBase::typeInfo = 1;
+const char* const LayerBase::typeID = "LayerBase";
+
+const uint32_t LayerBaseClient::typeInfo = LayerBase::typeInfo | 2;
+const char* const LayerBaseClient::typeID = "LayerBaseClient";
+
+// ---------------------------------------------------------------------------
+
+LayerBase::LayerBase(SurfaceFlinger* flinger, DisplayID display)
+    : dpy(display), contentDirty(false),
+      mFlinger(flinger),
+      mTransformed(false),
+      mUseLinearFiltering(false),
+      mOrientation(0),
+      mLeft(0), mTop(0),
+      mTransactionFlags(0),
+      mPremultipliedAlpha(true), mDebug(false),
+      mInvalidate(0)
+{
+    const DisplayHardware& hw(flinger->graphicPlane(0).displayHardware());
+    mFlags = hw.getFlags();
+}
+
+LayerBase::~LayerBase()
+{
+}
+
+void LayerBase::setName(const String8& name) {
+    mName = name;
+}
+
+String8 LayerBase::getName() const {
+    return mName;
+}
+
+const GraphicPlane& LayerBase::graphicPlane(int dpy) const
+{ 
+    return mFlinger->graphicPlane(dpy);
+}
+
+GraphicPlane& LayerBase::graphicPlane(int dpy)
+{
+    return mFlinger->graphicPlane(dpy); 
+}
+
+void LayerBase::initStates(uint32_t w, uint32_t h, uint32_t flags)
+{
+    uint32_t layerFlags = 0;
+    if (flags & ISurfaceComposer::eHidden)
+        layerFlags = ISurfaceComposer::eLayerHidden;
+
+    if (flags & ISurfaceComposer::eNonPremultiplied)
+        mPremultipliedAlpha = false;
+
+    mCurrentState.z             = 0;
+    mCurrentState.w             = w;
+    mCurrentState.h             = h;
+    mCurrentState.requested_w   = w;
+    mCurrentState.requested_h   = h;
+    mCurrentState.alpha         = 0xFF;
+    mCurrentState.flags         = layerFlags;
+    mCurrentState.sequence      = 0;
+    mCurrentState.transform.set(0, 0);
+
+    // drawing state & current state are identical
+    mDrawingState = mCurrentState;
+}
+
+void LayerBase::commitTransaction() {
+    mDrawingState = mCurrentState;
+}
+void LayerBase::forceVisibilityTransaction() {
+    // this can be called without SurfaceFlinger.mStateLock, but if we
+    // can atomically increment the sequence number, it doesn't matter.
+    android_atomic_inc(&mCurrentState.sequence);
+    requestTransaction();
+}
+bool LayerBase::requestTransaction() {
+    int32_t old = setTransactionFlags(eTransactionNeeded);
+    return ((old & eTransactionNeeded) == 0);
+}
+uint32_t LayerBase::getTransactionFlags(uint32_t flags) {
+    return android_atomic_and(~flags, &mTransactionFlags) & flags;
+}
+uint32_t LayerBase::setTransactionFlags(uint32_t flags) {
+    return android_atomic_or(flags, &mTransactionFlags);
+}
+
+bool LayerBase::setPosition(int32_t x, int32_t y) {
+    if (mCurrentState.transform.tx() == x && mCurrentState.transform.ty() == y)
+        return false;
+    mCurrentState.sequence++;
+    mCurrentState.transform.set(x, y);
+    requestTransaction();
+    return true;
+}
+bool LayerBase::setLayer(uint32_t z) {
+    if (mCurrentState.z == z)
+        return false;
+    mCurrentState.sequence++;
+    mCurrentState.z = z;
+    requestTransaction();
+    return true;
+}
+bool LayerBase::setSize(uint32_t w, uint32_t h) {
+    if (mCurrentState.requested_w == w && mCurrentState.requested_h == h)
+        return false;
+    mCurrentState.requested_w = w;
+    mCurrentState.requested_h = h;
+    requestTransaction();
+    return true;
+}
+bool LayerBase::setAlpha(uint8_t alpha) {
+    if (mCurrentState.alpha == alpha)
+        return false;
+    mCurrentState.sequence++;
+    mCurrentState.alpha = alpha;
+    requestTransaction();
+    return true;
+}
+bool LayerBase::setMatrix(const layer_state_t::matrix22_t& matrix) {
+    // TODO: check the matrix has changed
+    mCurrentState.sequence++;
+    mCurrentState.transform.set(
+            matrix.dsdx, matrix.dsdy, matrix.dtdx, matrix.dtdy);
+    requestTransaction();
+    return true;
+}
+bool LayerBase::setTransparentRegionHint(const Region& transparent) {
+    // TODO: check the region has changed
+    mCurrentState.sequence++;
+    mCurrentState.transparentRegion = transparent;
+    requestTransaction();
+    return true;
+}
+bool LayerBase::setFlags(uint8_t flags, uint8_t mask) {
+    const uint32_t newFlags = (mCurrentState.flags & ~mask) | (flags & mask);
+    if (mCurrentState.flags == newFlags)
+        return false;
+    mCurrentState.sequence++;
+    mCurrentState.flags = newFlags;
+    requestTransaction();
+    return true;
+}
+
+Rect LayerBase::visibleBounds() const
+{
+    return mTransformedBounds;
+}      
+
+void LayerBase::setVisibleRegion(const Region& visibleRegion) {
+    // always called from main thread
+    visibleRegionScreen = visibleRegion;
+}
+
+void LayerBase::setCoveredRegion(const Region& coveredRegion) {
+    // always called from main thread
+    coveredRegionScreen = coveredRegion;
+}
+
+uint32_t LayerBase::doTransaction(uint32_t flags)
+{
+    const Layer::State& front(drawingState());
+    const Layer::State& temp(currentState());
+
+    if ((front.requested_w != temp.requested_w) ||
+        (front.requested_h != temp.requested_h))  {
+        // resize the layer, set the physical size to the requested size
+        Layer::State& editTemp(currentState());
+        editTemp.w = temp.requested_w;
+        editTemp.h = temp.requested_h;
+    }
+
+    if ((front.w != temp.w) || (front.h != temp.h)) {
+        // invalidate and recompute the visible regions if needed
+        flags |= Layer::eVisibleRegion;
+    }
+
+    if (temp.sequence != front.sequence) {
+        // invalidate and recompute the visible regions if needed
+        flags |= eVisibleRegion;
+        this->contentDirty = true;
+
+        const bool linearFiltering = mUseLinearFiltering;
+        mUseLinearFiltering = false;
+        if (!(mFlags & DisplayHardware::SLOW_CONFIG)) {
+            // we may use linear filtering, if the matrix scales us
+            const uint8_t type = temp.transform.getType();
+            if (!temp.transform.preserveRects() || (type >= Transform::SCALE)) {
+                mUseLinearFiltering = true;
+            }
+        }
+    }
+
+    // Commit the transaction
+    commitTransaction();
+    return flags;
+}
+
+void LayerBase::validateVisibility(const Transform& planeTransform)
+{
+    const Layer::State& s(drawingState());
+    const Transform tr(planeTransform * s.transform);
+    const bool transformed = tr.transformed();
+   
+    uint32_t w = s.w;
+    uint32_t h = s.h;    
+    tr.transform(mVertices[0], 0, 0);
+    tr.transform(mVertices[1], 0, h);
+    tr.transform(mVertices[2], w, h);
+    tr.transform(mVertices[3], w, 0);
+    if (UNLIKELY(transformed)) {
+        // NOTE: here we could also punt if we have too many rectangles
+        // in the transparent region
+        if (tr.preserveRects()) {
+            // transform the transparent region
+            transparentRegionScreen = tr.transform(s.transparentRegion);
+        } else {
+            // transformation too complex, can't do the transparent region
+            // optimization.
+            transparentRegionScreen.clear();
+        }
+    } else {
+        transparentRegionScreen = s.transparentRegion;
+    }
+
+    // cache a few things...
+    mOrientation = tr.getOrientation();
+    mTransformedBounds = tr.makeBounds(w, h);
+    mTransformed = transformed;
+    mLeft = tr.tx();
+    mTop  = tr.ty();
+}
+
+void LayerBase::lockPageFlip(bool& recomputeVisibleRegions)
+{
+}
+
+void LayerBase::unlockPageFlip(
+        const Transform& planeTransform, Region& outDirtyRegion)
+{
+    if ((android_atomic_and(~1, &mInvalidate)&1) == 1) {
+        outDirtyRegion.orSelf(visibleRegionScreen);
+    }
+}
+
+void LayerBase::finishPageFlip()
+{
+}
+
+void LayerBase::invalidate()
+{
+    if ((android_atomic_or(1, &mInvalidate)&1) == 0) {
+        mFlinger->signalEvent();
+    }
+}
+
+void LayerBase::drawRegion(const Region& reg) const
+{
+    Region::const_iterator it = reg.begin();
+    Region::const_iterator const end = reg.end();
+    if (it != end) {
+        Rect r;
+        const DisplayHardware& hw(graphicPlane(0).displayHardware());
+        const int32_t fbWidth  = hw.getWidth();
+        const int32_t fbHeight = hw.getHeight();
+        const GLshort vertices[][2] = { { 0, 0 }, { fbWidth, 0 }, 
+                { fbWidth, fbHeight }, { 0, fbHeight }  };
+        glVertexPointer(2, GL_SHORT, 0, vertices);
+        while (it != end) {
+            const Rect& r = *it++;
+            const GLint sy = fbHeight - (r.top + r.height());
+            glScissor(r.left, sy, r.width(), r.height());
+            glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 
+        }
+    }
+}
+
+void LayerBase::draw(const Region& inClip) const
+{
+    // invalidate the region we'll update
+    Region clip(inClip);  // copy-on-write, so no-op most of the time
+
+    // Remove the transparent area from the clipping region
+    const State& s = drawingState();
+    if (LIKELY(!s.transparentRegion.isEmpty())) {
+        clip.subtract(transparentRegionScreen);
+        if (clip.isEmpty()) {
+            // usually this won't happen because this should be taken care of
+            // by SurfaceFlinger::computeVisibleRegions()
+            return;
+        }        
+    }
+
+    // reset GL state
+    glEnable(GL_SCISSOR_TEST);
+
+    onDraw(clip);
+
+    /*
+    glDisable(GL_TEXTURE_2D);
+    glDisable(GL_DITHER);
+    glEnable(GL_BLEND);
+    glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
+    glColor4x(0, 0x8000, 0, 0x10000);
+    drawRegion(transparentRegionScreen);
+    glDisable(GL_BLEND);
+    */
+}
+
+GLuint LayerBase::createTexture() const
+{
+    GLuint textureName = -1;
+    glGenTextures(1, &textureName);
+    glBindTexture(GL_TEXTURE_2D, textureName);
+    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    return textureName;
+}
+
+void LayerBase::clearWithOpenGL(const Region& clip, GLclampx red,
+                                GLclampx green, GLclampx blue,
+                                GLclampx alpha) const
+{
+    const DisplayHardware& hw(graphicPlane(0).displayHardware());
+    const uint32_t fbHeight = hw.getHeight();
+    glColor4x(red,green,blue,alpha);
+    glDisable(GL_TEXTURE_2D);
+    glDisable(GL_BLEND);
+    glDisable(GL_DITHER);
+
+    Region::const_iterator it = clip.begin();
+    Region::const_iterator const end = clip.end();
+    glEnable(GL_SCISSOR_TEST);
+    glVertexPointer(2, GL_FIXED, 0, mVertices);
+    while (it != end) {
+        const Rect& r = *it++;
+        const GLint sy = fbHeight - (r.top + r.height());
+        glScissor(r.left, sy, r.width(), r.height());
+        glDrawArrays(GL_TRIANGLE_FAN, 0, 4); 
+    }
+}
+
+void LayerBase::clearWithOpenGL(const Region& clip) const
+{
+    clearWithOpenGL(clip,0,0,0,0);
+}
+
+void LayerBase::drawWithOpenGL(const Region& clip, const Texture& texture) const
+{
+    const DisplayHardware& hw(graphicPlane(0).displayHardware());
+    const uint32_t fbHeight = hw.getHeight();
+    const State& s(drawingState());
+    
+    // bind our texture
+    validateTexture(texture.name);
+    uint32_t width  = texture.width; 
+    uint32_t height = texture.height;
+    
+    glEnable(GL_TEXTURE_2D);
+
+    if (UNLIKELY(s.alpha < 0xFF)) {
+        // We have an alpha-modulation. We need to modulate all
+        // texture components by alpha because we're always using 
+        // premultiplied alpha.
+        
+        // If the texture doesn't have an alpha channel we can
+        // use REPLACE and switch to non premultiplied alpha
+        // blending (SRCA/ONE_MINUS_SRCA).
+        
+        GLenum env, src;
+        if (needsBlending()) {
+            env = GL_MODULATE;
+            src = mPremultipliedAlpha ? GL_ONE : GL_SRC_ALPHA;
+        } else {
+            env = GL_REPLACE;
+            src = GL_SRC_ALPHA;
+        }
+        const GGLfixed alpha = (s.alpha << 16)/255;
+        glColor4x(alpha, alpha, alpha, alpha);
+        glEnable(GL_BLEND);
+        glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA);
+        glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, env);
+    } else {
+        glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+        glColor4x(0x10000, 0x10000, 0x10000, 0x10000);
+        if (needsBlending()) {
+            GLenum src = mPremultipliedAlpha ? GL_ONE : GL_SRC_ALPHA;
+            glEnable(GL_BLEND);
+            glBlendFunc(src, GL_ONE_MINUS_SRC_ALPHA);
+        } else {
+            glDisable(GL_BLEND);
+        }
+    }
+
+    Region::const_iterator it = clip.begin();
+    Region::const_iterator const end = clip.end();
+
+    //StopWatch watch("GL transformed");
+    const GLfixed texCoords[4][2] = {
+            { 0,        0 },
+            { 0,        0x10000 },
+            { 0x10000,  0x10000 },
+            { 0x10000,  0 }
+    };
+
+    glMatrixMode(GL_TEXTURE);
+    glLoadIdentity();
+
+    // the texture's source is rotated
+    switch (texture.transform) {
+        case HAL_TRANSFORM_ROT_90:
+            glTranslatef(0, 1, 0);
+            glRotatef(-90, 0, 0, 1);
+            break;
+        case HAL_TRANSFORM_ROT_180:
+            glTranslatef(1, 1, 0);
+            glRotatef(-180, 0, 0, 1);
+            break;
+        case HAL_TRANSFORM_ROT_270:
+            glTranslatef(1, 0, 0);
+            glRotatef(-270, 0, 0, 1);
+            break;
+    }
+
+    if (texture.NPOTAdjust) {
+        glScalef(texture.wScale, texture.hScale, 1.0f);
+    }
+
+    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+    glVertexPointer(2, GL_FIXED, 0, mVertices);
+    glTexCoordPointer(2, GL_FIXED, 0, texCoords);
+
+    while (it != end) {
+        const Rect& r = *it++;
+        const GLint sy = fbHeight - (r.top + r.height());
+        glScissor(r.left, sy, r.width(), r.height());
+        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+    }
+    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+}
+
+void LayerBase::validateTexture(GLint textureName) const
+{
+    glBindTexture(GL_TEXTURE_2D, textureName);
+    // TODO: reload the texture if needed
+    // this is currently done in loadTexture() below
+    if (mUseLinearFiltering) {
+        glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+        glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+    } else {
+        glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+        glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    }
+
+    if (needsDithering()) {
+        glEnable(GL_DITHER);
+    } else {
+        glDisable(GL_DITHER);
+    }
+}
+
+bool LayerBase::isSupportedYuvFormat(int format) const
+{
+    switch (format) {
+        case HAL_PIXEL_FORMAT_YCbCr_422_SP:
+        case HAL_PIXEL_FORMAT_YCbCr_420_SP:
+        case HAL_PIXEL_FORMAT_YCbCr_422_P:
+        case HAL_PIXEL_FORMAT_YCbCr_420_P:
+        case HAL_PIXEL_FORMAT_YCbCr_422_I:
+        case HAL_PIXEL_FORMAT_YCbCr_420_I:
+        case HAL_PIXEL_FORMAT_YCrCb_420_SP:
+            return true;
+    }
+    return false;
+}
+
+void LayerBase::loadTexture(Texture* texture, 
+        const Region& dirty, const GGLSurface& t) const
+{
+    if (texture->name == -1U) {
+        // uh?
+        return;
+    }
+
+    glBindTexture(GL_TEXTURE_2D, texture->name);
+
+    /*
+     * In OpenGL ES we can't specify a stride with glTexImage2D (however,
+     * GL_UNPACK_ALIGNMENT is a limited form of stride).
+     * So if the stride here isn't representable with GL_UNPACK_ALIGNMENT, we
+     * need to do something reasonable (here creating a bigger texture).
+     * 
+     * extra pixels = (((stride - width) * pixelsize) / GL_UNPACK_ALIGNMENT);
+     * 
+     * This situation doesn't happen often, but some h/w have a limitation
+     * for their framebuffer (eg: must be multiple of 8 pixels), and
+     * we need to take that into account when using these buffers as
+     * textures.
+     *
+     * This should never be a problem with POT textures
+     */
+    
+    int unpack = __builtin_ctz(t.stride * bytesPerPixel(t.format));
+    unpack = 1 << ((unpack > 3) ? 3 : unpack);
+    glPixelStorei(GL_UNPACK_ALIGNMENT, unpack);
+    
+    /*
+     * round to POT if needed 
+     */
+    if (!(mFlags & DisplayHardware::NPOT_EXTENSION)) {
+        texture->NPOTAdjust = true;
+    }
+    
+    if (texture->NPOTAdjust) {
+        // find the smallest power-of-two that will accommodate our surface
+        texture->potWidth  = 1 << (31 - clz(t.width));
+        texture->potHeight = 1 << (31 - clz(t.height));
+        if (texture->potWidth  < t.width)  texture->potWidth  <<= 1;
+        if (texture->potHeight < t.height) texture->potHeight <<= 1;
+        texture->wScale = float(t.width)  / texture->potWidth;
+        texture->hScale = float(t.height) / texture->potHeight;
+    } else {
+        texture->potWidth  = t.width;
+        texture->potHeight = t.height;
+    }
+
+    Rect bounds(dirty.bounds());
+    GLvoid* data = 0;
+    if (texture->width != t.width || texture->height != t.height) {
+        texture->width  = t.width;
+        texture->height = t.height;
+
+        // texture size changed, we need to create a new one
+        bounds.set(Rect(t.width, t.height));
+        if (t.width  == texture->potWidth &&
+            t.height == texture->potHeight) {
+            // we can do it one pass
+            data = t.data;
+        }
+
+        if (t.format == HAL_PIXEL_FORMAT_RGB_565) {
+            glTexImage2D(GL_TEXTURE_2D, 0,
+                    GL_RGB, texture->potWidth, texture->potHeight, 0,
+                    GL_RGB, GL_UNSIGNED_SHORT_5_6_5, data);
+        } else if (t.format == HAL_PIXEL_FORMAT_RGBA_4444) {
+            glTexImage2D(GL_TEXTURE_2D, 0,
+                    GL_RGBA, texture->potWidth, texture->potHeight, 0,
+                    GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4, data);
+        } else if (t.format == HAL_PIXEL_FORMAT_RGBA_8888 ||
+                   t.format == HAL_PIXEL_FORMAT_RGBX_8888) {
+            glTexImage2D(GL_TEXTURE_2D, 0,
+                    GL_RGBA, texture->potWidth, texture->potHeight, 0,
+                    GL_RGBA, GL_UNSIGNED_BYTE, data);
+        } else if (isSupportedYuvFormat(t.format)) {
+            // just show the Y plane of YUV buffers
+            glTexImage2D(GL_TEXTURE_2D, 0,
+                    GL_LUMINANCE, texture->potWidth, texture->potHeight, 0,
+                    GL_LUMINANCE, GL_UNSIGNED_BYTE, data);
+        } else {
+            // oops, we don't handle this format!
+            LOGE("layer %p, texture=%d, using format %d, which is not "
+                 "supported by the GL", this, texture->name, t.format);
+        }
+    }
+    if (!data) {
+        if (t.format == HAL_PIXEL_FORMAT_RGB_565) {
+            glTexSubImage2D(GL_TEXTURE_2D, 0,
+                    0, bounds.top, t.width, bounds.height(),
+                    GL_RGB, GL_UNSIGNED_SHORT_5_6_5,
+                    t.data + bounds.top*t.stride*2);
+        } else if (t.format == HAL_PIXEL_FORMAT_RGBA_4444) {
+            glTexSubImage2D(GL_TEXTURE_2D, 0,
+                    0, bounds.top, t.width, bounds.height(),
+                    GL_RGBA, GL_UNSIGNED_SHORT_4_4_4_4,
+                    t.data + bounds.top*t.stride*2);
+        } else if (t.format == HAL_PIXEL_FORMAT_RGBA_8888 ||
+                   t.format == HAL_PIXEL_FORMAT_RGBX_8888) {
+            glTexSubImage2D(GL_TEXTURE_2D, 0,
+                    0, bounds.top, t.width, bounds.height(),
+                    GL_RGBA, GL_UNSIGNED_BYTE,
+                    t.data + bounds.top*t.stride*4);
+        } else if (isSupportedYuvFormat(t.format)) {
+            // just show the Y plane of YUV buffers
+            glTexSubImage2D(GL_TEXTURE_2D, 0,
+                    0, bounds.top, t.width, bounds.height(),
+                    GL_LUMINANCE, GL_UNSIGNED_BYTE,
+                    t.data + bounds.top*t.stride);
+        }
+    }
+}
+
+status_t LayerBase::initializeEglImage(
+        const sp<GraphicBuffer>& buffer, Texture* texture)
+{
+    status_t err = NO_ERROR;
+
+    // we need to recreate the texture
+    EGLDisplay dpy(mFlinger->graphicPlane(0).getEGLDisplay());
+
+    // free the previous image
+    if (texture->image != EGL_NO_IMAGE_KHR) {
+        eglDestroyImageKHR(dpy, texture->image);
+        texture->image = EGL_NO_IMAGE_KHR;
+    }
+
+    // construct an EGL_NATIVE_BUFFER_ANDROID
+    android_native_buffer_t* clientBuf = buffer->getNativeBuffer();
+
+    // create the new EGLImageKHR
+    const EGLint attrs[] = {
+            EGL_IMAGE_PRESERVED_KHR,    EGL_TRUE,
+            EGL_NONE,                   EGL_NONE
+    };
+    texture->image = eglCreateImageKHR(
+            dpy, EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID,
+            (EGLClientBuffer)clientBuf, attrs);
+
+    if (texture->image != EGL_NO_IMAGE_KHR) {
+        glBindTexture(GL_TEXTURE_2D, texture->name);
+        glEGLImageTargetTexture2DOES(GL_TEXTURE_2D,
+                (GLeglImageOES)texture->image);
+        GLint error = glGetError();
+        if (UNLIKELY(error != GL_NO_ERROR)) {
+            LOGE("layer=%p, glEGLImageTargetTexture2DOES(%p) "
+                 "failed err=0x%04x",
+                 this, texture->image, error);
+            err = INVALID_OPERATION;
+        } else {
+            // Everything went okay!
+            texture->NPOTAdjust = false;
+            texture->dirty  = false;
+            texture->width  = clientBuf->width;
+            texture->height = clientBuf->height;
+        }
+    } else {
+        LOGE("layer=%p, eglCreateImageKHR() failed. err=0x%4x",
+                this, eglGetError());
+        err = INVALID_OPERATION;
+    }
+    return err;
+}
+
+
+// ---------------------------------------------------------------------------
+
+int32_t LayerBaseClient::sIdentity = 0;
+
+LayerBaseClient::LayerBaseClient(SurfaceFlinger* flinger, DisplayID display,
+        const sp<Client>& client, int32_t i)
+    : LayerBase(flinger, display), lcblk(NULL), client(client), mIndex(i),
+      mIdentity(uint32_t(android_atomic_inc(&sIdentity)))
+{
+    lcblk = new SharedBufferServer(
+            client->ctrlblk, i, NUM_BUFFERS,
+            mIdentity);
+}
+
+void LayerBaseClient::onFirstRef()
+{    
+    sp<Client> client(this->client.promote());
+    if (client != 0) {
+        client->bindLayer(this, mIndex);
+    }
+}
+
+LayerBaseClient::~LayerBaseClient()
+{
+    sp<Client> client(this->client.promote());
+    if (client != 0) {
+        client->free(mIndex);
+    }
+    delete lcblk;
+}
+
+int32_t LayerBaseClient::serverIndex() const 
+{
+    sp<Client> client(this->client.promote());
+    if (client != 0) {
+        return (client->cid<<16)|mIndex;
+    }
+    return 0xFFFF0000 | mIndex;
+}
+
+sp<LayerBaseClient::Surface> LayerBaseClient::getSurface()
+{
+    sp<Surface> s;
+    Mutex::Autolock _l(mLock);
+    s = mClientSurface.promote();
+    if (s == 0) {
+        s = createSurface();
+        mClientSurface = s;
+    }
+    return s;
+}
+
+sp<LayerBaseClient::Surface> LayerBaseClient::createSurface() const
+{
+    return new Surface(mFlinger, clientIndex(), mIdentity,
+            const_cast<LayerBaseClient *>(this));
+}
+
+// called with SurfaceFlinger::mStateLock as soon as the layer is entered
+// in the purgatory list
+void LayerBaseClient::onRemoved()
+{
+    // wake up the condition
+    lcblk->setStatus(NO_INIT);
+}
+
+// ---------------------------------------------------------------------------
+
+LayerBaseClient::Surface::Surface(
+        const sp<SurfaceFlinger>& flinger,
+        SurfaceID id, int identity, 
+        const sp<LayerBaseClient>& owner) 
+    : mFlinger(flinger), mToken(id), mIdentity(identity), mOwner(owner)
+{
+}
+
+LayerBaseClient::Surface::~Surface() 
+{
+    /*
+     * This is a good place to clean-up all client resources 
+     */
+
+    // destroy client resources
+    sp<LayerBaseClient> layer = getOwner();
+    if (layer != 0) {
+        mFlinger->destroySurface(layer);
+    }
+}
+
+sp<LayerBaseClient> LayerBaseClient::Surface::getOwner() const {
+    sp<LayerBaseClient> owner(mOwner.promote());
+    return owner;
+}
+
+status_t LayerBaseClient::Surface::onTransact(
+        uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    switch (code) {
+        case REGISTER_BUFFERS:
+        case UNREGISTER_BUFFERS:
+        case CREATE_OVERLAY:
+        {
+            if (!mFlinger->mAccessSurfaceFlinger.checkCalling()) {
+                IPCThreadState* ipc = IPCThreadState::self();
+                const int pid = ipc->getCallingPid();
+                const int uid = ipc->getCallingUid();
+                LOGE("Permission Denial: "
+                        "can't access SurfaceFlinger pid=%d, uid=%d", pid, uid);
+                return PERMISSION_DENIED;
+            }
+        }
+    }
+    return BnSurface::onTransact(code, data, reply, flags);
+}
+
+sp<GraphicBuffer> LayerBaseClient::Surface::requestBuffer(int index, int usage) 
+{
+    return NULL; 
+}
+
+status_t LayerBaseClient::Surface::registerBuffers(
+        const ISurface::BufferHeap& buffers) 
+{ 
+    return INVALID_OPERATION; 
+}
+
+void LayerBaseClient::Surface::postBuffer(ssize_t offset) 
+{
+}
+
+void LayerBaseClient::Surface::unregisterBuffers() 
+{
+}
+
+sp<OverlayRef> LayerBaseClient::Surface::createOverlay(
+        uint32_t w, uint32_t h, int32_t format, int32_t orientation)
+{
+    return NULL;
+};
+
+// ---------------------------------------------------------------------------
+
+}; // namespace android