BootAnimation.cpp revision ac31a3b8b09aba1c5ebc73f0cf65cac2210aa6b7 
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#define LOG_TAG "BootAnimation"
18
19#include <stdint.h>
20#include <sys/types.h>
21#include <math.h>
22#include <fcntl.h>
23#include <utils/misc.h>
24
25#include <binder/IPCThreadState.h>
26#include <utils/threads.h>
27#include <utils/Atomic.h>
28#include <utils/Errors.h>
29#include <utils/Log.h>
30#include <utils/AssetManager.h>
31
32#include <ui/PixelFormat.h>
33#include <ui/Rect.h>
34#include <ui/Region.h>
35#include <ui/DisplayInfo.h>
36#include <ui/ISurfaceComposer.h>
37#include <ui/ISurfaceFlingerClient.h>
38#include <ui/EGLNativeWindowSurface.h>
39
40#include <core/SkBitmap.h>
41#include <images/SkImageDecoder.h>
42
43#include <GLES/gl.h>
44#include <GLES/glext.h>
45#include <EGL/eglext.h>
46
47#include "BootAnimation.h"
48
49namespace android {
50
51// ---------------------------------------------------------------------------
52
53BootAnimation::BootAnimation() : Thread(false)
54{
55    mSession = new SurfaceComposerClient();
56}
57
58BootAnimation::~BootAnimation() {
59}
60
61void BootAnimation::onFirstRef() {
62    run("BootAnimation", PRIORITY_DISPLAY);
63}
64
65const sp<SurfaceComposerClient>& BootAnimation::session() const {
66    return mSession;
67}
68
69status_t BootAnimation::initTexture(Texture* texture, AssetManager& assets,
70        const char* name) {
71    Asset* asset = assets.open(name, Asset::ACCESS_BUFFER);
72    if (!asset)
73        return NO_INIT;
74    SkBitmap bitmap;
75    SkImageDecoder::DecodeMemory(asset->getBuffer(false), asset->getLength(),
76            &bitmap, SkBitmap::kNo_Config, SkImageDecoder::kDecodePixels_Mode);
77    asset->close();
78    delete asset;
79
80    // ensure we can call getPixels(). No need to call unlock, since the
81    // bitmap will go out of scope when we return from this method.
82    bitmap.lockPixels();
83
84    const int w = bitmap.width();
85    const int h = bitmap.height();
86    const void* p = bitmap.getPixels();
87
88    GLint crop[4] = { 0, h, w, -h };
89    texture->w = w;
90    texture->h = h;
91
92    glGenTextures(1, &texture->name);
93    glBindTexture(GL_TEXTURE_2D, texture->name);
94
95    switch (bitmap.getConfig()) {
96        case SkBitmap::kA8_Config:
97            glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, w, h, 0, GL_ALPHA,
98                    GL_UNSIGNED_BYTE, p);
99            break;
100        case SkBitmap::kARGB_4444_Config:
101            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
102                    GL_UNSIGNED_SHORT_4_4_4_4, p);
103            break;
104        case SkBitmap::kARGB_8888_Config:
105            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
106                    GL_UNSIGNED_BYTE, p);
107            break;
108        case SkBitmap::kRGB_565_Config:
109            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, w, h, 0, GL_RGB,
110                    GL_UNSIGNED_SHORT_5_6_5, p);
111            break;
112        default:
113            break;
114    }
115
116    glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, crop);
117    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
118    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
119    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
120    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
121    return NO_ERROR;
122}
123
124status_t BootAnimation::readyToRun() {
125    mAssets.addDefaultAssets();
126
127    DisplayInfo dinfo;
128    status_t status = session()->getDisplayInfo(0, &dinfo);
129    if (status)
130        return -1;
131
132    // create the native surface
133    sp<Surface> s = session()->createSurface(getpid(), 0, dinfo.w, dinfo.h,
134            PIXEL_FORMAT_RGB_565, ISurfaceComposer::eGPU);
135    session()->openTransaction();
136    s->setLayer(0x40000000);
137    session()->closeTransaction();
138
139    // initialize opengl and egl
140    const EGLint attribs[] = { EGL_RED_SIZE, 5, EGL_GREEN_SIZE, 6,
141            EGL_BLUE_SIZE, 5, EGL_DEPTH_SIZE, 0, EGL_NONE };
142    EGLint w, h, dummy;
143    EGLint numConfigs;
144    EGLConfig config;
145    EGLSurface surface;
146    EGLContext context;
147
148    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
149
150    eglInitialize(display, 0, 0);
151    eglChooseConfig(display, attribs, &config, 1, &numConfigs);
152
153    mNativeWindowSurface = new EGLNativeWindowSurface(s);
154    surface = eglCreateWindowSurface(display, config,
155            mNativeWindowSurface.get(), NULL);
156
157    context = eglCreateContext(display, config, NULL, NULL);
158    eglQuerySurface(display, surface, EGL_WIDTH, &w);
159    eglQuerySurface(display, surface, EGL_HEIGHT, &h);
160    eglMakeCurrent(display, surface, surface, context);
161    mDisplay = display;
162    mContext = context;
163    mSurface = surface;
164    mWidth = w;
165    mHeight = h;
166    mFlingerSurface = s;
167
168    // initialize GL
169    glShadeModel(GL_FLAT);
170    glEnable(GL_TEXTURE_2D);
171    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
172
173    return NO_ERROR;
174}
175
176bool BootAnimation::threadLoop() {
177    bool r = android();
178    eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
179    eglDestroyContext(mDisplay, mContext);
180    eglDestroySurface(mDisplay, mSurface);
181    mNativeWindowSurface.clear();
182    mFlingerSurface.clear();
183    eglTerminate(mDisplay);
184    IPCThreadState::self()->stopProcess();
185    return r;
186}
187
188bool BootAnimation::android() {
189    initTexture(&mAndroid[0], mAssets, "images/android-logo-mask.png");
190    initTexture(&mAndroid[1], mAssets, "images/android-logo-shine.png");
191
192    // clear screen
193    glDisable(GL_DITHER);
194    glDisable(GL_SCISSOR_TEST);
195    glClear(GL_COLOR_BUFFER_BIT);
196    eglSwapBuffers(mDisplay, mSurface);
197
198    const GLint xc = (mWidth  - mAndroid[0].w) / 2;
199    const GLint yc = (mHeight - mAndroid[0].h) / 2;
200    const Rect updateRect(xc, yc, xc + mAndroid[0].w, yc + mAndroid[0].h);
201
202    // draw and update only what we need
203    mNativeWindowSurface->setSwapRectangle(updateRect.left,
204            updateRect.top, updateRect.width(), updateRect.height());
205
206    glEnable(GL_SCISSOR_TEST);
207    glScissor(updateRect.left, mHeight - updateRect.bottom, updateRect.width(),
208            updateRect.height());
209
210    // Blend state
211    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
212    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
213
214    const nsecs_t startTime = systemTime();
215    do {
216        nsecs_t now = systemTime();
217        double time = now - startTime;
218        float t = 4.0f * float(time / us2ns(16667)) / mAndroid[1].w;
219        GLint offset = (1 - (t - floorf(t))) * mAndroid[1].w;
220        GLint x = xc - offset;
221
222        glDisable(GL_BLEND);
223        glBindTexture(GL_TEXTURE_2D, mAndroid[1].name);
224        glDrawTexiOES(x,                 yc, 0, mAndroid[1].w, mAndroid[1].h);
225        glDrawTexiOES(x + mAndroid[1].w, yc, 0, mAndroid[1].w, mAndroid[1].h);
226
227        glEnable(GL_BLEND);
228        glBindTexture(GL_TEXTURE_2D, mAndroid[0].name);
229        glDrawTexiOES(xc, yc, 0, mAndroid[0].w, mAndroid[0].h);
230
231        EGLBoolean res = eglSwapBuffers(mDisplay, mSurface);
232        if (res == EGL_FALSE)
233            break;
234
235        // 12fps: don't animate too fast to preserve CPU
236        const nsecs_t sleepTime = 83333 - ns2us(systemTime() - now);
237        if (sleepTime > 0)
238            usleep(sleepTime);
239    } while (!exitPending());
240
241    glDeleteTextures(1, &mAndroid[0].name);
242    glDeleteTextures(1, &mAndroid[1].name);
243    return false;
244}
245
246// ---------------------------------------------------------------------------
247
248}
249; // namespace android
250