auto import from //depot/cupcake/@135843

1 files changed, 353 insertions, 0 deletions

diff --git a/libs/surfaceflinger/DisplayHardware/DisplayHardware.cpp b/libs/surfaceflinger/DisplayHardware/DisplayHardware.cpp
new file mode 100644
index 0000000..f14d7e9
--- /dev/null
+++ b/libs/surfaceflinger/DisplayHardware/DisplayHardware.cpp
@@ -0,0 +1,353 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "SurfaceFlinger"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+#include <cutils/properties.h>
+
+#include <utils/Log.h>
+
+#include <ui/EGLDisplaySurface.h>
+
+#include <GLES/gl.h>
+#include <EGL/eglext.h>
+
+
+#include "DisplayHardware/DisplayHardware.h"
+
+#include <hardware/copybit.h>
+#include <hardware/overlay.h>
+
+using namespace android;
+
+static __attribute__((noinline))
+const char *egl_strerror(EGLint err)
+{
+    switch (err){
+        case EGL_SUCCESS:           return "EGL_SUCCESS";
+        case EGL_NOT_INITIALIZED:   return "EGL_NOT_INITIALIZED";
+        case EGL_BAD_ACCESS:        return "EGL_BAD_ACCESS";
+        case EGL_BAD_ALLOC:         return "EGL_BAD_ALLOC";
+        case EGL_BAD_ATTRIBUTE:     return "EGL_BAD_ATTRIBUTE";
+        case EGL_BAD_CONFIG:        return "EGL_BAD_CONFIG";
+        case EGL_BAD_CONTEXT:       return "EGL_BAD_CONTEXT";
+        case EGL_BAD_CURRENT_SURFACE: return "EGL_BAD_CURRENT_SURFACE";
+        case EGL_BAD_DISPLAY:       return "EGL_BAD_DISPLAY";
+        case EGL_BAD_MATCH:         return "EGL_BAD_MATCH";
+        case EGL_BAD_NATIVE_PIXMAP: return "EGL_BAD_NATIVE_PIXMAP";
+        case EGL_BAD_NATIVE_WINDOW: return "EGL_BAD_NATIVE_WINDOW";
+        case EGL_BAD_PARAMETER:     return "EGL_BAD_PARAMETER";
+        case EGL_BAD_SURFACE:       return "EGL_BAD_SURFACE";
+        case EGL_CONTEXT_LOST:      return "EGL_CONTEXT_LOST";
+        default: return "UNKNOWN";
+    }
+}
+
+static __attribute__((noinline))
+void checkGLErrors()
+{
+    GLenum error = glGetError();
+    if (error != GL_NO_ERROR)
+        LOGE("GL error 0x%04x", int(error));
+}
+
+static __attribute__((noinline))
+void checkEGLErrors(const char* token)
+{
+    EGLint error = eglGetError();
+    // GLESonGL seems to be returning 0 when there is no errors?
+    if (error && error != EGL_SUCCESS)
+        LOGE("%s error 0x%04x (%s)",
+                token, int(error), egl_strerror(error));
+}
+
+
+/*
+ * Initialize the display to the specified values.
+ *
+ */
+
+DisplayHardware::DisplayHardware(
+        const sp<SurfaceFlinger>& flinger,
+        uint32_t dpy)
+    : DisplayHardwareBase(flinger, dpy)
+{
+    init(dpy);
+}
+
+DisplayHardware::~DisplayHardware()
+{
+    fini();
+}
+
+float DisplayHardware::getDpiX() const          { return mDpiX; }
+float DisplayHardware::getDpiY() const          { return mDpiY; }
+float DisplayHardware::getDensity() const       { return mDensity; }
+float DisplayHardware::getRefreshRate() const   { return mRefreshRate; }
+int DisplayHardware::getWidth() const           { return mWidth; }
+int DisplayHardware::getHeight() const          { return mHeight; }
+PixelFormat DisplayHardware::getFormat() const  { return mFormat; }
+
+void DisplayHardware::init(uint32_t dpy)
+{
+    // initialize EGL
+    const EGLint attribs[] = {
+            EGL_RED_SIZE,       5,
+            EGL_GREEN_SIZE,     6,
+            EGL_BLUE_SIZE,      5,
+            EGL_DEPTH_SIZE,     0,
+            EGL_NONE
+    };
+    EGLint w, h, dummy;
+    EGLint numConfigs, n;
+    EGLConfig config;
+    EGLSurface surface;
+    EGLContext context;
+    mFlags = 0;
+
+    // TODO: all the extensions below should be queried through
+    // eglGetProcAddress().
+
+    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    eglInitialize(display, NULL, NULL);
+    eglGetConfigs(display, NULL, 0, &numConfigs);
+    eglChooseConfig(display, attribs, &config, 1, &n);
+
+    /*
+     * Gather EGL extensions
+     */
+
+    const char* const egl_extensions = eglQueryString(
+            display, EGL_EXTENSIONS);
+    
+    LOGI("EGL informations:");
+    LOGI("# of configs : %d", numConfigs);
+    LOGI("vendor    : %s", eglQueryString(display, EGL_VENDOR));
+    LOGI("version   : %s", eglQueryString(display, EGL_VERSION));
+    LOGI("extensions: %s", egl_extensions);
+    LOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported");
+
+    // TODO: get this from the devfb driver (probably should be HAL module)
+    mFlags |= SWAP_RECTANGLE_EXTENSION;
+    
+    // TODO: get the real "update_on_demand" behavior (probably should be HAL module)
+    mFlags |= UPDATE_ON_DEMAND;
+
+    if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy) == EGL_TRUE) {
+        if (dummy == EGL_SLOW_CONFIG)
+            mFlags |= SLOW_CONFIG;
+    }
+
+    /*
+     * Create our main surface
+     */
+
+    mDisplaySurface = new EGLDisplaySurface();
+
+    surface = eglCreateWindowSurface(display, config, mDisplaySurface.get(), NULL);
+    //checkEGLErrors("eglCreateDisplaySurfaceANDROID");
+
+    if (eglQuerySurface(display, surface, EGL_SWAP_BEHAVIOR, &dummy) == EGL_TRUE) {
+        if (dummy == EGL_BUFFER_PRESERVED) {
+            mFlags |= BUFFER_PRESERVED;
+        }
+    }
+    
+    GLint value = EGL_UNKNOWN;
+    eglQuerySurface(display, surface, EGL_HORIZONTAL_RESOLUTION, &value);
+    if (value == EGL_UNKNOWN) {
+        mDpiX = 160.0f;
+    } else {
+        mDpiX = 25.4f * float(value)/EGL_DISPLAY_SCALING;
+    }
+    value = EGL_UNKNOWN;
+    eglQuerySurface(display, surface, EGL_VERTICAL_RESOLUTION, &value);
+    if (value == EGL_UNKNOWN) {
+        mDpiY = 160.0f;
+    } else {
+        mDpiY = 25.4f * float(value)/EGL_DISPLAY_SCALING;
+    }
+    mRefreshRate = 60.f;    // TODO: get the real refresh rate 
+    
+    
+    char property[PROPERTY_VALUE_MAX];
+    if (property_get("ro.sf.lcd_density", property, NULL) <= 0) {
+        LOGW("ro.sf.lcd_density not defined, using 160 dpi by default.");
+        strcpy(property, "160");
+    }
+    mDensity = atoi(property) * (1.0f/160.0f);
+
+
+    /*
+     * Create our OpenGL ES context
+     */
+    
+    context = eglCreateContext(display, config, NULL, NULL);
+    //checkEGLErrors("eglCreateContext");
+    
+    eglQuerySurface(display, surface, EGL_WIDTH, &mWidth);
+    eglQuerySurface(display, surface, EGL_HEIGHT, &mHeight);
+    
+    
+    /*
+     * Gather OpenGL ES extensions
+     */
+
+    eglMakeCurrent(display, surface, surface, context);
+    const char* const  gl_extensions = (const char*)glGetString(GL_EXTENSIONS);
+    LOGI("OpenGL informations:");
+    LOGI("vendor    : %s", glGetString(GL_VENDOR));
+    LOGI("renderer  : %s", glGetString(GL_RENDERER));
+    LOGI("version   : %s", glGetString(GL_VERSION));
+    LOGI("extensions: %s", gl_extensions);
+
+    if (strstr(gl_extensions, "GL_ARB_texture_non_power_of_two")) {
+        mFlags |= NPOT_EXTENSION;
+    }
+    if (strstr(gl_extensions, "GL_OES_draw_texture")) {
+        mFlags |= DRAW_TEXTURE_EXTENSION;
+    }
+    if (strstr(gl_extensions, "GL_ANDROID_direct_texture")) {
+        mFlags |= DIRECT_TEXTURE;
+    }
+
+    // Unbind the context from this thread
+    eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+
+    mDisplay = display;
+    mConfig  = config;
+    mSurface = surface;
+    mContext = context;
+    mFormat  = GGL_PIXEL_FORMAT_RGB_565;
+    
+    hw_module_t const* module;
+
+    mBlitEngine = NULL;
+    if (hw_get_module(COPYBIT_HARDWARE_MODULE_ID, &module) == 0) {
+        copybit_open(module, &mBlitEngine);
+    }
+
+    mOverlayEngine = NULL;
+    if (hw_get_module(OVERLAY_HARDWARE_MODULE_ID, &module) == 0) {
+        overlay_control_open(module, &mOverlayEngine);
+    }
+}
+
+/*
+ * Clean up.  Throw out our local state.
+ *
+ * (It's entirely possible we'll never get here, since this is meant
+ * for real hardware, which doesn't restart.)
+ */
+
+void DisplayHardware::fini()
+{
+    eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+    eglTerminate(mDisplay);
+    copybit_close(mBlitEngine);
+    overlay_control_close(mOverlayEngine);
+}
+
+void DisplayHardware::releaseScreen() const
+{
+    DisplayHardwareBase::releaseScreen();
+}
+
+void DisplayHardware::acquireScreen() const
+{
+    DisplayHardwareBase::acquireScreen();
+}
+
+void DisplayHardware::getDisplaySurface(copybit_image_t* img) const
+{
+    img->w      = mDisplaySurface->stride;
+    img->h      = mDisplaySurface->height;
+    img->format = mDisplaySurface->format;
+    img->offset = mDisplaySurface->offset;
+    img->base   = (void*)mDisplaySurface->base;
+    img->fd     = mDisplaySurface->fd;
+}
+
+void DisplayHardware::getDisplaySurface(GGLSurface* fb) const
+{
+    fb->version= sizeof(GGLSurface);
+    fb->width  = mDisplaySurface->width;
+    fb->height = mDisplaySurface->height;
+    fb->stride = mDisplaySurface->stride;
+    fb->format = mDisplaySurface->format;
+    fb->data   = (GGLubyte*)mDisplaySurface->base + mDisplaySurface->offset;
+}
+
+uint32_t DisplayHardware::getPageFlipCount() const {
+    return mDisplaySurface->getPageFlipCount();
+}
+
+/*
+ * "Flip" the front and back buffers.
+ */
+
+void DisplayHardware::flip(const Region& dirty) const
+{
+    checkGLErrors();
+
+    EGLDisplay dpy = mDisplay;
+    EGLSurface surface = mSurface;
+
+    Region newDirty(dirty);
+    newDirty.andSelf(Rect(mWidth, mHeight));
+
+    if (mFlags & BUFFER_PRESERVED) {
+        const Region copyback(mDirty.subtract(newDirty));
+        mDirty = newDirty;
+        mDisplaySurface->copyFrontToBack(copyback);
+    } 
+
+    if (mFlags & SWAP_RECTANGLE_EXTENSION) {
+        const Rect& b(newDirty.bounds());
+        mDisplaySurface->setSwapRectangle(
+                b.left, b.top, b.width(), b.height());
+    }
+
+    eglSwapBuffers(dpy, surface);
+    checkEGLErrors("eglSwapBuffers");
+
+    // for debugging
+    //glClearColor(1,0,0,0);
+    //glClear(GL_COLOR_BUFFER_BIT);
+}
+
+uint32_t DisplayHardware::getFlags() const
+{
+    return mFlags;
+}
+
+void DisplayHardware::makeCurrent() const
+{
+    eglMakeCurrent(mDisplay, mSurface, mSurface, mContext);
+}
+
+void DisplayHardware::copyFrontToImage(const copybit_image_t& front) const {
+    mDisplaySurface->copyFrontToImage(front);
+}
+
+void DisplayHardware::copyBackToImage(const copybit_image_t& front) const {
+    mDisplaySurface->copyBackToImage(front);
+}