BootAnimation.cpp

/*
 * 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 "BootAnimation"

#include <stdint.h>
#include <sys/types.h>
#include <math.h>
#include <fcntl.h>
#include <utils/misc.h>
#include <signal.h>

#include <cutils/properties.h>

#include <androidfw/AssetManager.h>
#include <binder/IPCThreadState.h>
#include <utils/Atomic.h>
#include <utils/Errors.h>
#include <utils/Log.h>
#include <utils/threads.h>

#include <ui/PixelFormat.h>
#include <ui/Rect.h>
#include <ui/Region.h>
#include <ui/DisplayInfo.h>
#include <ui/FramebufferNativeWindow.h>

#include <gui/ISurfaceComposer.h>
#include <gui/Surface.h>
#include <gui/SurfaceComposerClient.h>

#include <core/SkBitmap.h>
#include <core/SkStream.h>
#include <core/SkImageDecoder.h>

#include <GLES/gl.h>
#include <GLES/glext.h>
#include <EGL/eglext.h>

#include "BootAnimation.h"
#include "EGLUtils.h"

#define USER_BOOTANIMATION_FILE "/data/local/bootanimation.zip"
#define SYSTEM_BOOTANIMATION_FILE "/system/media/bootanimation.zip"
#define SYSTEM_ENCRYPTED_BOOTANIMATION_FILE "/system/media/bootanimation-encrypted.zip"
#define EXIT_PROP_NAME "service.bootanim.exit"

extern "C" int clock_nanosleep(clockid_t clock_id, int flags,
                           const struct timespec *request,
                           struct timespec *remain);

namespace android {

// ---------------------------------------------------------------------------


#include <EGL/egl.h>
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>

static void printGLString(const char *name, GLenum s) {  
    const char *v = (const char *) glGetString(s);
    fprintf(stderr, "GL %s = %s\n", name, v);
}
static const char* eglErrorToString[] = {
        "EGL_SUCCESS", // 0x3000 12288
        "EGL_NOT_INITIALIZED",
        "EGL_BAD_ACCESS", // 0x3002 12290
        "EGL_BAD_ALLOC", "EGL_BAD_ATTRIBUTE",
        "EGL_BAD_CONFIG",
        "EGL_BAD_CONTEXT", // 0x3006 12294
        "EGL_BAD_CURRENT_SURFACE", "EGL_BAD_DISPLAY", "EGL_BAD_MATCH",
        "EGL_BAD_NATIVE_PIXMAP", "EGL_BAD_NATIVE_WINDOW", "EGL_BAD_PARAMETER", // 0x300c 12300
        "EGL_BAD_SURFACE" };
static void checkEglError(const char* op, EGLBoolean returnVal = EGL_TRUE) {
    if (returnVal != EGL_TRUE) {
        fprintf(stderr, "%s() returned %d\n", op, returnVal);
    }
    for (EGLint error = eglGetError(); error != EGL_SUCCESS; error
            = eglGetError()) {
        const char* errorString = "unknown";
        if (error >= EGL_SUCCESS && error <= EGL_BAD_SURFACE) {
            errorString = eglErrorToString[error - EGL_SUCCESS];
        }
        fprintf(stderr, "after %s() eglError %s (0x%x)\n", op, errorString,
                error);
    }
}
static void checkGlError(const char* op) {
    for (GLint error = glGetError(); error; error
            = glGetError()) {
        fprintf(stderr, "after %s() glError (0x%x)\n", op, error);
    }
}

static const char gVertexShader[] = "attribute vec4 vPosition;\n"
    "void main() {\n"
    "  gl_Position = vPosition;\n"
    "}\n";
static const char gFragmentShader[] = "precision mediump float;\n"
    "void main() {\n"
    "  gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);\n"
    "}\n";

GLuint loadShader(GLenum shaderType, const char* pSource) {
    GLuint shader = glCreateShader(shaderType);
    if (shader) {
        glShaderSource(shader, 1, &pSource, NULL);
        glCompileShader(shader);
        GLint compiled = 0;
        glGetShaderiv(shader, GL_COMPILE_STATUS, &compiled);
        if (!compiled) {
            GLint infoLen = 0;
            glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &infoLen);
            if (infoLen) {
                char* buf = (char*) malloc(infoLen);
                if (buf) {
                    glGetShaderInfoLog(shader, infoLen, NULL, buf);
                    fprintf(stderr, "Could not compile shader %d:\n%s\n",
                            shaderType, buf);
                    free(buf);
                }
                glDeleteShader(shader);
                shader = 0;
            }
        }
    }
    return shader;
}
GLuint createProgram(const char* pVertexSource, const char* pFragmentSource) {
    GLuint vertexShader = loadShader(GL_VERTEX_SHADER, pVertexSource);
    if (!vertexShader) {
        return 0;
    }
    GLuint pixelShader = loadShader(GL_FRAGMENT_SHADER, pFragmentSource);
    if (!pixelShader) {
        return 0;
    }
    GLuint program = glCreateProgram();
    if (program) {
        glAttachShader(program, vertexShader);
        checkGlError("glAttachShader");
        glAttachShader(program, pixelShader);
        checkGlError("glAttachShader");
        glLinkProgram(program);
        GLint linkStatus = GL_FALSE;
        glGetProgramiv(program, GL_LINK_STATUS, &linkStatus);
        if (linkStatus != GL_TRUE) {
            GLint bufLength = 0;
            glGetProgramiv(program, GL_INFO_LOG_LENGTH, &bufLength);
            if (bufLength) {
                char* buf = (char*) malloc(bufLength);
                if (buf) {
                    glGetProgramInfoLog(program, bufLength, NULL, buf);
                    fprintf(stderr, "Could not link program:\n%s\n", buf);
                    free(buf);
                }
            }
            glDeleteProgram(program);
            program = 0;
        }
    }
    return program;
}
GLuint gProgram;
GLuint gvPositionHandle;

#define SHADER_SOURCE(...) #__VA_ARGS__

bool initGL2State (GLuint *p_out_program, GLuint *p_out_texture) {
    const static char vertexShader[] = SHADER_SOURCE
    (
	attribute vec4 a_position;
	attribute vec2 a_texCoord;
	varying vec2 v_texCoord;
	void main() 
	{
	    gl_Position = a_position;
	    v_texCoord = a_texCoord;
	}
    );

    const static char pixelsShader[] = SHADER_SOURCE
    (
	precision mediump float;
	varying vec2 v_texCoord;
	uniform sampler2D s_texture;
	void main() 
	{
	    gl_FragColor = texture2D(s_texture, v_texCoord);
	}
    );
    
    GLuint program = createProgram(vertexShader, pixelsShader);
    if (!program) 
    {
	return false;	
    }
    // Load the texture
//    GLuint texture = CreateSimpleTexture2D();
    GLuint texture;
    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
	
	*p_out_program = program;
	*p_out_texture = texture;

  	fprintf(stderr, "initGL2State(): succeeded\n");
  
    return true;
    
}

void destroy(GLuint program, GLuint texture) {
    glDeleteProgram(program);
    glDeleteTextures(1, &texture);
}

//    draw function from ColorSupport.cpp

void draw(GLuint program, GLuint texture, int x, int y, int width, int height) 
{
	GLfloat verts[] = { -1.0f, -1.0f, 0.0f, 
			    -1.0f, +1.0f, 0.0f,
			    +1.0f, -1.0f, 0.0f, 
			    +1.0f, +1.0f, 0.0f };

	GLfloat tcoords[] = { 0.0f, 1.0f,
			      0.0f, 0.0f,
			      1.0f, 1.0f,
			      1.0f, 0.0f };

	glViewport(x, y, width, height);
//	glClearColor(0.0f, 0.0f, 1.0f, 1.0f);
//	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
	glBindTexture(GL_TEXTURE_2D, texture);

	glUseProgram(program);
	GLint positionLoc = glGetAttribLocation(program, "a_position");
	GLint texCoordLoc = glGetAttribLocation(program, "a_texCoord");
	glVertexAttribPointer(positionLoc, 3, GL_FLOAT, GL_FALSE, 0, verts);
	glVertexAttribPointer(texCoordLoc, 2, GL_FLOAT, GL_FALSE, 0, tcoords);
	glEnableVertexAttribArray(positionLoc);
	glEnableVertexAttribArray(texCoordLoc);
	glActiveTexture(GL_TEXTURE0);
	glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
	
}
#if 0
void readback(unsigned char* img) {
//	FrameBuffer *fb = FrameBuffer::getFB();
	if (fb->bind_locked()) {
	    if (bind_fbo()) {
		glReadPixels(0, 0, m_width, m_height, GL_RGBA, GL_UNSIGNED_BYTE, img);
		}
	fb->unbind_locked();
	}
}
#endif

void printEGLConfiguration(EGLDisplay display, EGLConfig config) {

#define X(VAL) {VAL, #VAL}
    struct {EGLint attribute; const char* name;} names[] = {
    X(EGL_BUFFER_SIZE),
    X(EGL_ALPHA_SIZE),
    X(EGL_BLUE_SIZE),
    X(EGL_GREEN_SIZE),
    X(EGL_RED_SIZE),
    X(EGL_DEPTH_SIZE),
    X(EGL_STENCIL_SIZE),
    X(EGL_CONFIG_CAVEAT),
    X(EGL_CONFIG_ID),
    X(EGL_LEVEL),
    X(EGL_MAX_PBUFFER_HEIGHT),
    X(EGL_MAX_PBUFFER_PIXELS),
    X(EGL_MAX_PBUFFER_WIDTH),
    X(EGL_NATIVE_RENDERABLE),
    X(EGL_NATIVE_VISUAL_ID),
    X(EGL_NATIVE_VISUAL_TYPE),
    X(EGL_SAMPLES),
    X(EGL_SAMPLE_BUFFERS),
    X(EGL_SURFACE_TYPE),
    X(EGL_TRANSPARENT_TYPE),
    X(EGL_TRANSPARENT_RED_VALUE),
    X(EGL_TRANSPARENT_GREEN_VALUE),
    X(EGL_TRANSPARENT_BLUE_VALUE),
    X(EGL_BIND_TO_TEXTURE_RGB),
    X(EGL_BIND_TO_TEXTURE_RGBA),
    X(EGL_MIN_SWAP_INTERVAL),
    X(EGL_MAX_SWAP_INTERVAL),
    X(EGL_LUMINANCE_SIZE),
    X(EGL_ALPHA_MASK_SIZE),
    X(EGL_COLOR_BUFFER_TYPE),
    X(EGL_RENDERABLE_TYPE),
    X(EGL_CONFORMANT),
   };
#undef X

    for (size_t j = 0; j < sizeof(names) / sizeof(names[0]); j++) {
        EGLint value = -1;
        EGLint returnVal = eglGetConfigAttrib(display, config, names[j].attribute, &value);
        EGLint error = eglGetError();
        if (returnVal && error == EGL_SUCCESS) {
            printf(" %s: ", names[j].name);
            printf("%d (0x%x)", value, value);
        }
    }
    printf("\n");
}

int printEGLConfigurations(EGLDisplay display) {
    EGLint numConfig = 0;
    EGLint returnVal = eglGetConfigs(display, NULL, 0, &numConfig);
    checkEglError("eglGetConfigs", returnVal);
    if (!returnVal) {
        return false;
    }

    printf("Number of EGL configuration: %d\n", numConfig);

    EGLConfig* configs = (EGLConfig*) malloc(sizeof(EGLConfig) * numConfig);
    if (! configs) {
        printf("Could not allocate configs.\n");
        return false;
    }

    returnVal = eglGetConfigs(display, configs, numConfig, &numConfig);
    checkEglError("eglGetConfigs", returnVal);
    if (!returnVal) {
        free(configs);
        return false;
    }

    for(int i = 0; i < numConfig; i++) {
        printf("Configuration %d\n", i);
        printEGLConfiguration(display, configs[i]);
    }

    free(configs);
    return true;
}


BootAnimation::BootAnimation() : Thread(false)
{
    mSession = new SurfaceComposerClient();
}

BootAnimation::~BootAnimation() {
}

void BootAnimation::onFirstRef() {
    status_t err = mSession->linkToComposerDeath(this);
    ALOGE_IF(err, "linkToComposerDeath failed (%s) ", strerror(-err));
    if (err == NO_ERROR) {
        run("BootAnimation", PRIORITY_DISPLAY);
    }
}

sp<SurfaceComposerClient> BootAnimation::session() const {
    return mSession;
}


void BootAnimation::binderDied(const wp<IBinder>& who)
{
    // woah, surfaceflinger died!
    ALOGD("SurfaceFlinger died, exiting...");

    // calling requestExit() is not enough here because the Surface code
    // might be blocked on a condition variable that will never be updated.
    kill( getpid(), SIGKILL );
    requestExit();
}

status_t BootAnimation::initTexture(Texture* texture, AssetManager& assets,
        const char* name) {
    Asset* asset = assets.open(name, Asset::ACCESS_BUFFER);
    if (!asset) {
		printf("can not load image!\n");	
        return NO_INIT;
}
    SkBitmap bitmap;
    SkImageDecoder::DecodeMemory(asset->getBuffer(false), asset->getLength(),
            &bitmap, SkBitmap::kNo_Config, SkImageDecoder::kDecodePixels_Mode);
    asset->close();
    delete asset;

    // ensure we can call getPixels(). No need to call unlock, since the
    // bitmap will go out of scope when we return from this method.
    bitmap.lockPixels();

    const int w = bitmap.width();
    const int h = bitmap.height();
    const void* p = bitmap.getPixels();

    GLint crop[4] = { 0, h, w, -h };
    texture->w = w;
    texture->h = h;

    glGenTextures(1, &texture->name);
    glBindTexture(GL_TEXTURE_2D, texture->name);

    switch (bitmap.getConfig()) {
        case SkBitmap::kA8_Config:
            glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, w, h, 0, GL_ALPHA,
                    GL_UNSIGNED_BYTE, p);
            break;
        case SkBitmap::kARGB_4444_Config:
            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
                    GL_UNSIGNED_SHORT_4_4_4_4, p);
            break;
        case SkBitmap::kARGB_8888_Config:
            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
                    GL_UNSIGNED_BYTE, p);
            break;
        case SkBitmap::kRGB_565_Config:
            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, w, h, 0, GL_RGB,
                    GL_UNSIGNED_SHORT_5_6_5, p);
            break;
        default:
            break;
    }

//    glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, crop);
	checkGlError("glTexParameteriv");
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    return NO_ERROR;
}

status_t BootAnimation::initTexture(void* buffer, size_t len)
{
    //StopWatch watch("blah");

    SkBitmap bitmap;
    SkMemoryStream  stream(buffer, len);
    SkImageDecoder* codec = SkImageDecoder::Factory(&stream);
    codec->setDitherImage(false);
    if (codec) {
        codec->decode(&stream, &bitmap,
                SkBitmap::kARGB_8888_Config,
                SkImageDecoder::kDecodePixels_Mode);
        delete codec;
    }

    // ensure we can call getPixels(). No need to call unlock, since the
    // bitmap will go out of scope when we return from this method.
    bitmap.lockPixels();

    const int w = bitmap.width();
    const int h = bitmap.height();
    const void* p = bitmap.getPixels();

    GLint crop[4] = { 0, h, w, -h };
    int tw = 1 << (31 - __builtin_clz(w));
    int th = 1 << (31 - __builtin_clz(h));
    if (tw < w) tw <<= 1;
    if (th < h) th <<= 1;

    switch (bitmap.getConfig()) {
        case SkBitmap::kARGB_8888_Config:
            if (tw != w || th != h) {
                glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tw, th, 0, GL_RGBA,
                        GL_UNSIGNED_BYTE, 0);
                glTexSubImage2D(GL_TEXTURE_2D, 0,
                        0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, p);
            } else {
                glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tw, th, 0, GL_RGBA,
                        GL_UNSIGNED_BYTE, p);
            }
            break;

        case SkBitmap::kRGB_565_Config:
            if (tw != w || th != h) {
                glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, tw, th, 0, GL_RGB,
                        GL_UNSIGNED_SHORT_5_6_5, 0);
                glTexSubImage2D(GL_TEXTURE_2D, 0,
                        0, 0, w, h, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, p);
            } else {
                glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, tw, th, 0, GL_RGB,
                        GL_UNSIGNED_SHORT_5_6_5, p);
            }
            break;
        default:
            break;
    }

  //  glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, crop);
	checkGlError("glTexParameteriv");

    return NO_ERROR;
}

status_t BootAnimation::readyToRun() {
    mAssets.addDefaultAssets();

    sp<IBinder> dtoken(SurfaceComposerClient::getBuiltInDisplay(
            ISurfaceComposer::eDisplayIdMain));
    DisplayInfo dinfo;
    status_t status = SurfaceComposerClient::getDisplayInfo(dtoken, &dinfo);
    if (status)
        return -1;

    // create the native surface
    sp<SurfaceControl> control = session()->createSurface(String8("BootAnimation"),
            dinfo.w, dinfo.h, PIXEL_FORMAT_RGB_565);

    SurfaceComposerClient::openGlobalTransaction();
    control->setLayer(0x40000000);
    SurfaceComposerClient::closeGlobalTransaction();

    sp<Surface> s = control->getSurface();

    // initialize opengl and egl
    const EGLint attribs[] = {
            EGL_RED_SIZE,   8,
            EGL_GREEN_SIZE, 8,
            EGL_BLUE_SIZE,  8,
            EGL_DEPTH_SIZE, 0,
            EGL_NONE
    };
    EGLBoolean returnValue;
    EGLConfig myConfig = {0};
    EGLint majorVersion;
    EGLint minorVersion;
    EGLint w, h, dummy;
    EGLint numConfigs;
    EGLConfig config;
    EGLSurface surface;
    EGLContext context;
    EGLint glContextAttribs[] = {
        EGL_CONTEXT_CLIENT_VERSION, 2, 
	EGL_NONE
    };
    EGLint s_configAttribs[] = {EGL_SURFACE_TYPE, EGL_WINDOW_BIT, EGL_RENDERABLE_TYPE, 
				EGL_OPENGL_ES2_BIT, EGL_NONE };

    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);

    returnValue = eglInitialize(display, &majorVersion, &minorVersion);
    EGLNativeWindowType window = android_createDisplaySurface();
    returnValue = EGLUtils::selectConfigForNativeWindow(display, s_configAttribs, window,
							&myConfig);
    printEGLConfiguration(display, myConfig);
    eglChooseConfig(display, attribs, &config, 1, &numConfigs);
    surface = eglCreateWindowSurface(display, myConfig, window, NULL);
    checkEglError("eglCreateWindowSurface");
    context = eglCreateContext(display, myConfig, NULL, glContextAttribs);
    returnValue = eglMakeCurrent(display, surface, surface, context);
    checkEglError("eglMakeCurrent", returnValue);
    eglQuerySurface(display, surface, EGL_WIDTH, &w);
    eglQuerySurface(display, surface, EGL_HEIGHT, &h);

    if (eglMakeCurrent(display, surface, surface, context) == EGL_FALSE)
        return NO_INIT;

    mDisplay = display;
    mContext = context;
    mSurface = surface;
    mWidth = w;
    mHeight = h;
    mFlingerSurfaceControl = control;
    mFlingerSurface = s;

    mAndroidAnimation = true;

    // If the device has encryption turned on or is in process 
    // of being encrypted we show the encrypted boot animation.
    char decrypt[PROPERTY_VALUE_MAX];
    property_get("vold.decrypt", decrypt, "");

    bool encryptedAnimation = atoi(decrypt) != 0 || !strcmp("trigger_restart_min_framework", decrypt);

    if ((encryptedAnimation &&
            (access(SYSTEM_ENCRYPTED_BOOTANIMATION_FILE, R_OK) == 0) &&
            (mZip.open(SYSTEM_ENCRYPTED_BOOTANIMATION_FILE) == NO_ERROR)) ||

            ((access(USER_BOOTANIMATION_FILE, R_OK) == 0) &&
            (mZip.open(USER_BOOTANIMATION_FILE) == NO_ERROR)) ||

            ((access(SYSTEM_BOOTANIMATION_FILE, R_OK) == 0) &&
            (mZip.open(SYSTEM_BOOTANIMATION_FILE) == NO_ERROR))) {
        mAndroidAnimation = false;
    }

    return NO_ERROR;
}

bool BootAnimation::threadLoop()
{
    bool r;
    if (mAndroidAnimation) {
        r = android();
    } else {
        r = android();
    }

    // No need to force exit anymore
    property_set(EXIT_PROP_NAME, "0");

    eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
    eglDestroyContext(mDisplay, mContext);
    eglDestroySurface(mDisplay, mSurface);
    mFlingerSurface.clear();
    mFlingerSurfaceControl.clear();
    eglTerminate(mDisplay);
    IPCThreadState::self()->stopProcess();
    return r;
}

bool BootAnimation::android()
{
    initTexture(&mAndroid[0], mAssets, "images/android-logo-mask.png");
    initTexture(&mAndroid[1], mAssets, "images/android-logo-shine.png");

    // clear screen
   // glShadeModel(GL_FLAT);
    glDisable(GL_DITHER);
    glDisable(GL_SCISSOR_TEST);
    glClearColor(0,0,0,1);
    glClear(GL_COLOR_BUFFER_BIT);
    eglSwapBuffers(mDisplay, mSurface);

//    glEnable(GL_TEXTURE_2D);
//    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
    
    const GLint xc = (mWidth  - mAndroid[0].w) / 2;
    const GLint yc = (mHeight - mAndroid[0].h) / 2;
    const Rect updateRect(xc, yc, xc + mAndroid[0].w, yc + mAndroid[0].h);

   glScissor(updateRect.left, mHeight - updateRect.bottom, updateRect.width(),
         updateRect.height());


    // Blend state

    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
//    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
	GLuint texture;
	GLuint program;
	initGL2State(&program, &texture);

//		setupGraphics(mWidth, mHeight);
    const nsecs_t startTime = systemTime();
    do {
        nsecs_t now = systemTime();
        double time = now - startTime;
        float t = 4.0f * float(time / us2ns(16667)) / mAndroid[1].w;
        GLint offset = (1 - (t - floorf(t))) * mAndroid[1].w;
        GLint x = xc - offset;

        glDisable(GL_SCISSOR_TEST);
        glClear(GL_COLOR_BUFFER_BIT);
        glEnable(GL_SCISSOR_TEST);
//        glDisable(GL_BLEND);

		draw(program, mAndroid[1].name, x, yc, mAndroid[1].w, mAndroid[1].h);
		draw(program, mAndroid[1].name, x + mAndroid[1].w, yc, mAndroid[1].w, mAndroid[1].h);
        glEnable(GL_BLEND);
		draw(program, mAndroid[0].name, xc, yc, mAndroid[0].w, mAndroid[0].h);
   

        EGLBoolean res = eglSwapBuffers(mDisplay, mSurface);
        if (res == EGL_FALSE)
            break;

        // 12fps: don't animate too fast to preserve CPU
        const nsecs_t sleepTime = 83333 - ns2us(systemTime() - now);
        if (sleepTime > 0)
            usleep(sleepTime);

        checkExit();
    } while (!exitPending());

      glDeleteTextures(1, &mAndroid[0].name);
      glDeleteTextures(1, &mAndroid[1].name);
    return false;
}


void BootAnimation::checkExit() {
    // Allow surface flinger to gracefully request shutdown
    char value[PROPERTY_VALUE_MAX];
    property_get(EXIT_PROP_NAME, value, "0");
    int exitnow = atoi(value);
    if (exitnow) {
        requestExit();
    }
}
#if 0
bool BootAnimation::movie()
{
    ZipFileRO& zip(mZip);

    size_t numEntries = zip.getNumEntries();
    ZipEntryRO desc = zip.findEntryByName("desc.txt");
    FileMap* descMap = zip.createEntryFileMap(desc);
    ALOGE_IF(!descMap, "descMap is null");
    if (!descMap) {
        return false;
    }

    String8 desString((char const*)descMap->getDataPtr(),
            descMap->getDataLength());
    char const* s = desString.string();

    Animation animation;

    // Parse the description file
    for (;;) {
        const char* endl = strstr(s, "\n");
        if (!endl) break;
        String8 line(s, endl - s);
        const char* l = line.string();
        int fps, width, height, count, pause;
        char path[256];
        char pathType;
        if (sscanf(l, "%d %d %d", &width, &height, &fps) == 3) {
            //LOGD("> w=%d, h=%d, fps=%d", width, height, fps);
            animation.width = width;
            animation.height = height;
            animation.fps = fps;
        }
        else if (sscanf(l, " %c %d %d %s", &pathType, &count, &pause, path) == 4) {
            //LOGD("> type=%c, count=%d, pause=%d, path=%s", pathType, count, pause, path);
            Animation::Part part;
            part.playUntilComplete = pathType == 'c';
            part.count = count;
            part.pause = pause;
            part.path = path;
            animation.parts.add(part);
        }

        s = ++endl;
    }

    // read all the data structures
    const size_t pcount = animation.parts.size();
    for (size_t i=0 ; i<numEntries ; i++) {
        char name[256];
        ZipEntryRO entry = zip.findEntryByIndex(i);
        if (zip.getEntryFileName(entry, name, 256) == 0) {
            const String8 entryName(name);
            const String8 path(entryName.getPathDir());
            const String8 leaf(entryName.getPathLeaf());
            if (leaf.size() > 0) {
                for (int j=0 ; j<pcount ; j++) {
                    if (path == animation.parts[j].path) {
                        int method;
                        // supports only stored png files
                        if (zip.getEntryInfo(entry, &method, 0, 0, 0, 0, 0)) {
                            if (method == ZipFileRO::kCompressStored) {
                                FileMap* map = zip.createEntryFileMap(entry);
                                if (map) {
                                    Animation::Frame frame;
                                    frame.name = leaf;
                                    frame.map = map;
                                    Animation::Part& part(animation.parts.editItemAt(j));
                                    part.frames.add(frame);
                                }
                            }
                        }
                    }
                }
            }
        }
    }

    // clear screen
    glShadeModel(GL_FLAT);
    glDisable(GL_DITHER);
    glDisable(GL_SCISSOR_TEST);
    glDisable(GL_BLEND);
    glClearColor(0,0,0,1);
    glClear(GL_COLOR_BUFFER_BIT);

    eglSwapBuffers(mDisplay, mSurface);

    glBindTexture(GL_TEXTURE_2D, 0);
    glEnable(GL_TEXTURE_2D);
    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);

    const int xc = (mWidth - animation.width) / 2;
    const int yc = ((mHeight - animation.height) / 2);
    nsecs_t lastFrame = systemTime();
    nsecs_t frameDuration = s2ns(1) / animation.fps;

    Region clearReg(Rect(mWidth, mHeight));
    clearReg.subtractSelf(Rect(xc, yc, xc+animation.width, yc+animation.height));

    for (int i=0 ; i<pcount ; i++) {
        const Animation::Part& part(animation.parts[i]);
        const size_t fcount = part.frames.size();
        glBindTexture(GL_TEXTURE_2D, 0);

        for (int r=0 ; !part.count || r<part.count ; r++) {
            // Exit any non playuntil complete parts immediately
            if(exitPending() && !part.playUntilComplete)
                break;

            for (int j=0 ; j<fcount && (!exitPending() || part.playUntilComplete) ; j++) {
                const Animation::Frame& frame(part.frames[j]);
                nsecs_t lastFrame = systemTime();

                if (r > 0) {
                    glBindTexture(GL_TEXTURE_2D, frame.tid);
                } else {
                    if (part.count != 1) {
                        glGenTextures(1, &frame.tid);
                        glBindTexture(GL_TEXTURE_2D, frame.tid);
                        glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
                        glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
                    }
                    initTexture(
                            frame.map->getDataPtr(),
                            frame.map->getDataLength());
                }

                if (!clearReg.isEmpty()) {
                    Region::const_iterator head(clearReg.begin());
                    Region::const_iterator tail(clearReg.end());
                    glEnable(GL_SCISSOR_TEST);
                    while (head != tail) {
                        const Rect& r(*head++);
                        glScissor(r.left, mHeight - r.bottom,
                                r.width(), r.height());
                        glClear(GL_COLOR_BUFFER_BIT);
                    }
                    glDisable(GL_SCISSOR_TEST);
                }
                glDrawTexiOES(xc, yc, 0, animation.width, animation.height);
                eglSwapBuffers(mDisplay, mSurface);

                nsecs_t now = systemTime();
                nsecs_t delay = frameDuration - (now - lastFrame);
                //ALOGD("%lld, %lld", ns2ms(now - lastFrame), ns2ms(delay));
                lastFrame = now;

                if (delay > 0) {
                    struct timespec spec;
                    spec.tv_sec  = (now + delay) / 1000000000;
                    spec.tv_nsec = (now + delay) % 1000000000;
                    int err;
                    do {
                        err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL);
                    } while (err<0 && errno == EINTR);
                }

                checkExit();
            }

            usleep(part.pause * ns2us(frameDuration));

            // For infinite parts, we've now played them at least once, so perhaps exit
            if(exitPending() && !part.count)
                break;
        }

        // free the textures for this part
        if (part.count != 1) {
            for (int j=0 ; j<fcount ; j++) {
                const Animation::Frame& frame(part.frames[j]);
                glDeleteTextures(1, &frame.tid);
            }
        }
    }

    return false;
}
#endif
// ---------------------------------------------------------------------------

}
; // namespace android