BootAnimation.cpp revision bc7261130a51dc9f3461d3970eee1b923bcbf193 
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/FramebufferNativeWindow.h>
39#include <ui/EGLUtils.h>
40
41#include <core/SkBitmap.h>
42#include <images/SkImageDecoder.h>
43
44#include <GLES/gl.h>
45#include <GLES/glext.h>
46#include <EGL/eglext.h>
47
48#include "BootAnimation.h"
49
50namespace android {
51
52// ---------------------------------------------------------------------------
53
54BootAnimation::BootAnimation() : Thread(false)
55{
56    mSession = new SurfaceComposerClient();
57}
58
59BootAnimation::~BootAnimation() {
60}
61
62void BootAnimation::onFirstRef() {
63    status_t err = mSession->linkToComposerDeath(this);
64    LOGE_IF(err, "linkToComposerDeath failed (%s) ", strerror(-err));
65    if (err != NO_ERROR) {
66        run("BootAnimation", PRIORITY_DISPLAY);
67    }
68}
69
70sp<SurfaceComposerClient> BootAnimation::session() const {
71    return mSession;
72}
73
74
75void BootAnimation::binderDied(const wp<IBinder>& who)
76{
77    // woah, surfaceflinger died!
78    LOGD("SurfaceFlinger died, exiting...");
79
80    // calling requestExit() is not enough here because the Surface code
81    // might be blocked on a condition variable that will never be updated.
82    kill( getpid(), SIGKILL );
83    requestExit();
84}
85
86status_t BootAnimation::initTexture(Texture* texture, AssetManager& assets,
87        const char* name) {
88    Asset* asset = assets.open(name, Asset::ACCESS_BUFFER);
89    if (!asset)
90        return NO_INIT;
91    SkBitmap bitmap;
92    SkImageDecoder::DecodeMemory(asset->getBuffer(false), asset->getLength(),
93            &bitmap, SkBitmap::kNo_Config, SkImageDecoder::kDecodePixels_Mode);
94    asset->close();
95    delete asset;
96
97    // ensure we can call getPixels(). No need to call unlock, since the
98    // bitmap will go out of scope when we return from this method.
99    bitmap.lockPixels();
100
101    const int w = bitmap.width();
102    const int h = bitmap.height();
103    const void* p = bitmap.getPixels();
104
105    GLint crop[4] = { 0, h, w, -h };
106    texture->w = w;
107    texture->h = h;
108
109    glGenTextures(1, &texture->name);
110    glBindTexture(GL_TEXTURE_2D, texture->name);
111
112    switch (bitmap.getConfig()) {
113        case SkBitmap::kA8_Config:
114            glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, w, h, 0, GL_ALPHA,
115                    GL_UNSIGNED_BYTE, p);
116            break;
117        case SkBitmap::kARGB_4444_Config:
118            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
119                    GL_UNSIGNED_SHORT_4_4_4_4, p);
120            break;
121        case SkBitmap::kARGB_8888_Config:
122            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
123                    GL_UNSIGNED_BYTE, p);
124            break;
125        case SkBitmap::kRGB_565_Config:
126            glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, w, h, 0, GL_RGB,
127                    GL_UNSIGNED_SHORT_5_6_5, p);
128            break;
129        default:
130            break;
131    }
132
133    glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, crop);
134    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
135    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
136    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
137    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
138    return NO_ERROR;
139}
140
141status_t BootAnimation::readyToRun() {
142    mAssets.addDefaultAssets();
143
144    DisplayInfo dinfo;
145    status_t status = session()->getDisplayInfo(0, &dinfo);
146    if (status)
147        return -1;
148
149    // create the native surface
150    sp<SurfaceControl> control = session()->createSurface(
151            getpid(), 0, dinfo.w, dinfo.h, PIXEL_FORMAT_RGB_565);
152    session()->openTransaction();
153    control->setLayer(0x40000000);
154    session()->closeTransaction();
155
156    sp<Surface> s = control->getSurface();
157
158    // initialize opengl and egl
159    const EGLint attribs[] = {
160            EGL_DEPTH_SIZE, 0,
161            EGL_NONE
162    };
163    EGLint w, h, dummy;
164    EGLint numConfigs;
165    EGLConfig config;
166    EGLSurface surface;
167    EGLContext context;
168
169    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
170
171    eglInitialize(display, 0, 0);
172    EGLUtils::selectConfigForNativeWindow(display, attribs, s.get(), &config);
173    surface = eglCreateWindowSurface(display, config, s.get(), NULL);
174    context = eglCreateContext(display, config, NULL, NULL);
175    eglQuerySurface(display, surface, EGL_WIDTH, &w);
176    eglQuerySurface(display, surface, EGL_HEIGHT, &h);
177
178    if (eglMakeCurrent(display, surface, surface, context) == EGL_FALSE)
179        return NO_INIT;
180
181    mDisplay = display;
182    mContext = context;
183    mSurface = surface;
184    mWidth = w;
185    mHeight = h;
186    mFlingerSurfaceControl = control;
187    mFlingerSurface = s;
188
189    // initialize GL
190    glShadeModel(GL_FLAT);
191    glEnable(GL_TEXTURE_2D);
192    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
193
194    return NO_ERROR;
195}
196
197bool BootAnimation::threadLoop() {
198    bool r = android();
199    eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
200    eglDestroyContext(mDisplay, mContext);
201    eglDestroySurface(mDisplay, mSurface);
202    mFlingerSurface.clear();
203    mFlingerSurfaceControl.clear();
204    eglTerminate(mDisplay);
205    IPCThreadState::self()->stopProcess();
206    return r;
207}
208
209bool BootAnimation::android() {
210    initTexture(&mAndroid[0], mAssets, "images/android-logo-mask.png");
211    initTexture(&mAndroid[1], mAssets, "images/android-logo-shine.png");
212
213    // clear screen
214    glDisable(GL_DITHER);
215    glDisable(GL_SCISSOR_TEST);
216    glClear(GL_COLOR_BUFFER_BIT);
217    eglSwapBuffers(mDisplay, mSurface);
218
219    const GLint xc = (mWidth  - mAndroid[0].w) / 2;
220    const GLint yc = (mHeight - mAndroid[0].h) / 2;
221    const Rect updateRect(xc, yc, xc + mAndroid[0].w, yc + mAndroid[0].h);
222
223    // draw and update only what we need
224    mFlingerSurface->setSwapRectangle(updateRect);
225
226    glScissor(updateRect.left, mHeight - updateRect.bottom, updateRect.width(),
227            updateRect.height());
228
229    // Blend state
230    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
231    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
232
233    const nsecs_t startTime = systemTime();
234    do {
235        nsecs_t now = systemTime();
236        double time = now - startTime;
237        float t = 4.0f * float(time / us2ns(16667)) / mAndroid[1].w;
238        GLint offset = (1 - (t - floorf(t))) * mAndroid[1].w;
239        GLint x = xc - offset;
240
241        glDisable(GL_SCISSOR_TEST);
242        glClear(GL_COLOR_BUFFER_BIT);
243
244        glEnable(GL_SCISSOR_TEST);
245        glDisable(GL_BLEND);
246        glBindTexture(GL_TEXTURE_2D, mAndroid[1].name);
247        glDrawTexiOES(x,                 yc, 0, mAndroid[1].w, mAndroid[1].h);
248        glDrawTexiOES(x + mAndroid[1].w, yc, 0, mAndroid[1].w, mAndroid[1].h);
249
250        glEnable(GL_BLEND);
251        glBindTexture(GL_TEXTURE_2D, mAndroid[0].name);
252        glDrawTexiOES(xc, yc, 0, mAndroid[0].w, mAndroid[0].h);
253
254        EGLBoolean res = eglSwapBuffers(mDisplay, mSurface);
255        if (res == EGL_FALSE)
256            break;
257
258        // 12fps: don't animate too fast to preserve CPU
259        const nsecs_t sleepTime = 83333 - ns2us(systemTime() - now);
260        if (sleepTime > 0)
261            usleep(sleepTime);
262    } while (!exitPending());
263
264    glDeleteTextures(1, &mAndroid[0].name);
265    glDeleteTextures(1, &mAndroid[1].name);
266    return false;
267}
268
269// ---------------------------------------------------------------------------
270
271}
272; // namespace android
273