BootAnimation.cpp revision 317a6280cc109e873646e4652be1582d870eedfd 
1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <stdint.h>
18#include <sys/types.h>
19#include <math.h>
20#include <fcntl.h>
21#include <utils/misc.h>
22
23#include <binder/IPCThreadState.h>
24#include <utils/threads.h>
25#include <utils/Atomic.h>
26#include <utils/Errors.h>
27#include <utils/Log.h>
28#include <utils/AssetManager.h>
29
30#include <ui/PixelFormat.h>
31#include <ui/Rect.h>
32#include <ui/Region.h>
33#include <ui/DisplayInfo.h>
34#include <ui/ISurfaceComposer.h>
35#include <ui/ISurfaceFlingerClient.h>
36#include <ui/FramebufferNativeWindow.h>
37#include <ui/EGLUtils.h>
38
39#include <core/SkBitmap.h>
40#include <images/SkImageDecoder.h>
41
42#include <GLES/gl.h>
43#include <GLES/glext.h>
44#include <EGL/eglext.h>
45
46#include "BootAnimation.h"
47
48namespace android {
49
50// ---------------------------------------------------------------------------
51
52BootAnimation::BootAnimation() : Thread(false)
53{
54    mSession = new SurfaceComposerClient();
55}
56
57BootAnimation::~BootAnimation() {
58}
59
60void BootAnimation::onFirstRef() {
61    run("BootAnimation", PRIORITY_DISPLAY);
62}
63
64const sp<SurfaceComposerClient>& BootAnimation::session() const {
65    return mSession;
66}
67
68status_t BootAnimation::initTexture(Texture* texture, AssetManager& assets,
69        const char* name) {
70    Asset* asset = assets.open(name, Asset::ACCESS_BUFFER);
71    if (!asset)
72        return NO_INIT;
73    SkBitmap bitmap;
74    SkImageDecoder::DecodeMemory(asset->getBuffer(false), asset->getLength(),
75            &bitmap, SkBitmap::kNo_Config, SkImageDecoder::kDecodePixels_Mode);
76    asset->close();
77    delete asset;
78
79    // ensure we can call getPixels(). No need to call unlock, since the
80    // bitmap will go out of scope when we return from this method.
81    bitmap.lockPixels();
82
83    const int w = bitmap.width();
84    const int h = bitmap.height();
85    const void* p = bitmap.getPixels();
86
87    GLint crop[4] = { 0, h, w, -h };
88    texture->w = w;
89    texture->h = h;
90
91    glGenTextures(1, &texture->name);
92    glBindTexture(GL_TEXTURE_2D, texture->name);
93
94    switch (bitmap.getConfig()) {
95        case SkBitmap::kA8_Config:
96            glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, w, h, 0, GL_ALPHA,
97                    GL_UNSIGNED_BYTE, p);
98            break;
99        case SkBitmap::kARGB_4444_Config:
100            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
101                    GL_UNSIGNED_SHORT_4_4_4_4, p);
102            break;
103        case SkBitmap::kARGB_8888_Config:
104            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
105                    GL_UNSIGNED_BYTE, p);
106            break;
107        case SkBitmap::kRGB_565_Config:
108            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, w, h, 0, GL_RGB,
109                    GL_UNSIGNED_SHORT_5_6_5, p);
110            break;
111        default:
112            break;
113    }
114
115    glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, crop);
116    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
117    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
118    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
119    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
120    return NO_ERROR;
121}
122
123status_t BootAnimation::readyToRun() {
124    mAssets.addDefaultAssets();
125
126    DisplayInfo dinfo;
127    status_t status = session()->getDisplayInfo(0, &dinfo);
128    if (status)
129        return -1;
130
131    // create the native surface
132    sp<SurfaceControl> control = session()->createSurface(
133            getpid(), 0, dinfo.w, dinfo.h, PIXEL_FORMAT_RGB_565);
134    session()->openTransaction();
135    control->setLayer(0x40000000);
136    session()->closeTransaction();
137
138    sp<Surface> s = control->getSurface();
139
140    // initialize opengl and egl
141    const EGLint attribs[] = {
142            EGL_DEPTH_SIZE, 0,
143            EGL_NONE
144    };
145    EGLint w, h, dummy;
146    EGLint numConfigs;
147    EGLConfig config;
148    EGLSurface surface;
149    EGLContext context;
150
151    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
152
153    eglInitialize(display, 0, 0);
154    EGLUtils::selectConfigForNativeWindow(display, attribs, s.get(), &config);
155    surface = eglCreateWindowSurface(display, config, s.get(), NULL);
156    context = eglCreateContext(display, config, NULL, NULL);
157    eglQuerySurface(display, surface, EGL_WIDTH, &w);
158    eglQuerySurface(display, surface, EGL_HEIGHT, &h);
159
160    if (eglMakeCurrent(display, surface, surface, context) == EGL_FALSE)
161        return NO_INIT;
162
163    mDisplay = display;
164    mContext = context;
165    mSurface = surface;
166    mWidth = w;
167    mHeight = h;
168    mFlingerSurfaceControl = control;
169    mFlingerSurface = s;
170
171    // initialize GL
172    glShadeModel(GL_FLAT);
173    glEnable(GL_TEXTURE_2D);
174    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
175
176    return NO_ERROR;
177}
178
179bool BootAnimation::threadLoop() {
180    bool r = android();
181    eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
182    eglDestroyContext(mDisplay, mContext);
183    eglDestroySurface(mDisplay, mSurface);
184    mFlingerSurface.clear();
185    mFlingerSurfaceControl.clear();
186    eglTerminate(mDisplay);
187    IPCThreadState::self()->stopProcess();
188    return r;
189}
190
191bool BootAnimation::android() {
192    initTexture(&mAndroid[0], mAssets, "images/android-logo-mask.png");
193    initTexture(&mAndroid[1], mAssets, "images/android-logo-shine.png");
194
195    // clear screen
196    glDisable(GL_DITHER);
197    glDisable(GL_SCISSOR_TEST);
198    glClear(GL_COLOR_BUFFER_BIT);
199    eglSwapBuffers(mDisplay, mSurface);
200
201    const GLint xc = (mWidth  - mAndroid[0].w) / 2;
202    const GLint yc = (mHeight - mAndroid[0].h) / 2;
203    const Rect updateRect(xc, yc, xc + mAndroid[0].w, yc + mAndroid[0].h);
204
205    // draw and update only what we need
206    mFlingerSurface->setSwapRectangle(updateRect);
207
208    glScissor(updateRect.left, mHeight - updateRect.bottom, updateRect.width(),
209            updateRect.height());
210
211    // Blend state
212    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
213    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
214
215    const nsecs_t startTime = systemTime();
216    do {
217        nsecs_t now = systemTime();
218        double time = now - startTime;
219        float t = 4.0f * float(time / us2ns(16667)) / mAndroid[1].w;
220        GLint offset = (1 - (t - floorf(t))) * mAndroid[1].w;
221        GLint x = xc - offset;
222
223        glDisable(GL_SCISSOR_TEST);
224        glClear(GL_COLOR_BUFFER_BIT);
225
226        glEnable(GL_SCISSOR_TEST);
227        glDisable(GL_BLEND);
228        glBindTexture(GL_TEXTURE_2D, mAndroid[1].name);
229        glDrawTexiOES(x,                 yc, 0, mAndroid[1].w, mAndroid[1].h);
230        glDrawTexiOES(x + mAndroid[1].w, yc, 0, mAndroid[1].w, mAndroid[1].h);
231
232        glEnable(GL_BLEND);
233        glBindTexture(GL_TEXTURE_2D, mAndroid[0].name);
234        glDrawTexiOES(xc, yc, 0, mAndroid[0].w, mAndroid[0].h);
235
236        EGLBoolean res = eglSwapBuffers(mDisplay, mSurface);
237        if (res == EGL_FALSE)
238            break;
239
240        // 12fps: don't animate too fast to preserve CPU
241        const nsecs_t sleepTime = 83333 - ns2us(systemTime() - now);
242        if (sleepTime > 0)
243            usleep(sleepTime);
244    } while (!exitPending());
245
246    glDeleteTextures(1, &mAndroid[0].name);
247    glDeleteTextures(1, &mAndroid[1].name);
248    return false;
249}
250
251// ---------------------------------------------------------------------------
252
253}
254; // namespace android
255