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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 #include <signal.h>
25 
26 #include <cutils/properties.h>
27 
28 #include <androidfw/AssetManager.h>
29 #include <binder/IPCThreadState.h>
30 #include <utils/Atomic.h>
31 #include <utils/Errors.h>
32 #include <utils/Log.h>
33 #include <utils/threads.h>
34 
35 #include <ui/PixelFormat.h>
36 #include <ui/Rect.h>
37 #include <ui/Region.h>
38 #include <ui/DisplayInfo.h>
39 #include <ui/FramebufferNativeWindow.h>
40 
41 #include <gui/Surface.h>
42 #include <gui/SurfaceComposerClient.h>
43 
44 #include <core/SkBitmap.h>
45 #include <core/SkStream.h>
46 #include <images/SkImageDecoder.h>
47 
48 #include <GLES/gl.h>
49 #include <GLES/glext.h>
50 #include <EGL/eglext.h>
51 
52 #include "BootAnimation.h"
53 
54 #define USER_BOOTANIMATION_FILE "/data/local/bootanimation.zip"
55 #define SYSTEM_BOOTANIMATION_FILE "/system/media/bootanimation.zip"
56 #define SYSTEM_ENCRYPTED_BOOTANIMATION_FILE "/system/media/bootanimation-encrypted.zip"
57 #define EXIT_PROP_NAME "service.bootanim.exit"
58 
59 extern "C" int clock_nanosleep(clockid_t clock_id, int flags,
60                            const struct timespec *request,
61                            struct timespec *remain);
62 
63 namespace android {
64 
65 // ---------------------------------------------------------------------------
66 
BootAnimation()67 BootAnimation::BootAnimation() : Thread(false)
68 {
69     mSession = new SurfaceComposerClient();
70 }
71 
~BootAnimation()72 BootAnimation::~BootAnimation() {
73 }
74 
onFirstRef()75 void BootAnimation::onFirstRef() {
76     status_t err = mSession->linkToComposerDeath(this);
77     ALOGE_IF(err, "linkToComposerDeath failed (%s) ", strerror(-err));
78     if (err == NO_ERROR) {
79         run("BootAnimation", PRIORITY_DISPLAY);
80     }
81 }
82 
session() const83 sp<SurfaceComposerClient> BootAnimation::session() const {
84     return mSession;
85 }
86 
87 
binderDied(const wp<IBinder> & who)88 void BootAnimation::binderDied(const wp<IBinder>& who)
89 {
90     // woah, surfaceflinger died!
91     ALOGD("SurfaceFlinger died, exiting...");
92 
93     // calling requestExit() is not enough here because the Surface code
94     // might be blocked on a condition variable that will never be updated.
95     kill( getpid(), SIGKILL );
96     requestExit();
97 }
98 
initTexture(Texture * texture,AssetManager & assets,const char * name)99 status_t BootAnimation::initTexture(Texture* texture, AssetManager& assets,
100         const char* name) {
101     Asset* asset = assets.open(name, Asset::ACCESS_BUFFER);
102     if (!asset)
103         return NO_INIT;
104     SkBitmap bitmap;
105     SkImageDecoder::DecodeMemory(asset->getBuffer(false), asset->getLength(),
106             &bitmap, SkBitmap::kNo_Config, SkImageDecoder::kDecodePixels_Mode);
107     asset->close();
108     delete asset;
109 
110     // ensure we can call getPixels(). No need to call unlock, since the
111     // bitmap will go out of scope when we return from this method.
112     bitmap.lockPixels();
113 
114     const int w = bitmap.width();
115     const int h = bitmap.height();
116     const void* p = bitmap.getPixels();
117 
118     GLint crop[4] = { 0, h, w, -h };
119     texture->w = w;
120     texture->h = h;
121 
122     glGenTextures(1, &texture->name);
123     glBindTexture(GL_TEXTURE_2D, texture->name);
124 
125     switch (bitmap.getConfig()) {
126         case SkBitmap::kA8_Config:
127             glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, w, h, 0, GL_ALPHA,
128                     GL_UNSIGNED_BYTE, p);
129             break;
130         case SkBitmap::kARGB_4444_Config:
131             glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
132                     GL_UNSIGNED_SHORT_4_4_4_4, p);
133             break;
134         case SkBitmap::kARGB_8888_Config:
135             glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA,
136                     GL_UNSIGNED_BYTE, p);
137             break;
138         case SkBitmap::kRGB_565_Config:
139             glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, w, h, 0, GL_RGB,
140                     GL_UNSIGNED_SHORT_5_6_5, p);
141             break;
142         default:
143             break;
144     }
145 
146     glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, crop);
147     glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
148     glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
149     glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
150     glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
151     return NO_ERROR;
152 }
153 
initTexture(void * buffer,size_t len)154 status_t BootAnimation::initTexture(void* buffer, size_t len)
155 {
156     //StopWatch watch("blah");
157 
158     SkBitmap bitmap;
159     SkMemoryStream  stream(buffer, len);
160     SkImageDecoder* codec = SkImageDecoder::Factory(&stream);
161     codec->setDitherImage(false);
162     if (codec) {
163         codec->decode(&stream, &bitmap,
164                 SkBitmap::kARGB_8888_Config,
165                 SkImageDecoder::kDecodePixels_Mode);
166         delete codec;
167     }
168 
169     // ensure we can call getPixels(). No need to call unlock, since the
170     // bitmap will go out of scope when we return from this method.
171     bitmap.lockPixels();
172 
173     const int w = bitmap.width();
174     const int h = bitmap.height();
175     const void* p = bitmap.getPixels();
176 
177     GLint crop[4] = { 0, h, w, -h };
178     int tw = 1 << (31 - __builtin_clz(w));
179     int th = 1 << (31 - __builtin_clz(h));
180     if (tw < w) tw <<= 1;
181     if (th < h) th <<= 1;
182 
183     switch (bitmap.getConfig()) {
184         case SkBitmap::kARGB_8888_Config:
185             if (tw != w || th != h) {
186                 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tw, th, 0, GL_RGBA,
187                         GL_UNSIGNED_BYTE, 0);
188                 glTexSubImage2D(GL_TEXTURE_2D, 0,
189                         0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, p);
190             } else {
191                 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tw, th, 0, GL_RGBA,
192                         GL_UNSIGNED_BYTE, p);
193             }
194             break;
195 
196         case SkBitmap::kRGB_565_Config:
197             if (tw != w || th != h) {
198                 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, tw, th, 0, GL_RGB,
199                         GL_UNSIGNED_SHORT_5_6_5, 0);
200                 glTexSubImage2D(GL_TEXTURE_2D, 0,
201                         0, 0, w, h, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, p);
202             } else {
203                 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, tw, th, 0, GL_RGB,
204                         GL_UNSIGNED_SHORT_5_6_5, p);
205             }
206             break;
207         default:
208             break;
209     }
210 
211     glTexParameteriv(GL_TEXTURE_2D, GL_TEXTURE_CROP_RECT_OES, crop);
212 
213     return NO_ERROR;
214 }
215 
readyToRun()216 status_t BootAnimation::readyToRun() {
217     mAssets.addDefaultAssets();
218 
219     DisplayInfo dinfo;
220     status_t status = session()->getDisplayInfo(0, &dinfo);
221     if (status)
222         return -1;
223 
224     // create the native surface
225     sp<SurfaceControl> control = session()->createSurface(
226             0, dinfo.w, dinfo.h, PIXEL_FORMAT_RGB_565);
227 
228     SurfaceComposerClient::openGlobalTransaction();
229     control->setLayer(0x40000000);
230     SurfaceComposerClient::closeGlobalTransaction();
231 
232     sp<Surface> s = control->getSurface();
233 
234     // initialize opengl and egl
235     const EGLint attribs[] = {
236             EGL_RED_SIZE,   8,
237             EGL_GREEN_SIZE, 8,
238             EGL_BLUE_SIZE,  8,
239             EGL_DEPTH_SIZE, 0,
240             EGL_NONE
241     };
242     EGLint w, h, dummy;
243     EGLint numConfigs;
244     EGLConfig config;
245     EGLSurface surface;
246     EGLContext context;
247 
248     EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
249 
250     eglInitialize(display, 0, 0);
251     eglChooseConfig(display, attribs, &config, 1, &numConfigs);
252     surface = eglCreateWindowSurface(display, config, s.get(), NULL);
253     context = eglCreateContext(display, config, NULL, NULL);
254     eglQuerySurface(display, surface, EGL_WIDTH, &w);
255     eglQuerySurface(display, surface, EGL_HEIGHT, &h);
256 
257     if (eglMakeCurrent(display, surface, surface, context) == EGL_FALSE)
258         return NO_INIT;
259 
260     mDisplay = display;
261     mContext = context;
262     mSurface = surface;
263     mWidth = w;
264     mHeight = h;
265     mFlingerSurfaceControl = control;
266     mFlingerSurface = s;
267 
268     mAndroidAnimation = true;
269 
270     // If the device has encryption turned on or is in process
271     // of being encrypted we show the encrypted boot animation.
272     char decrypt[PROPERTY_VALUE_MAX];
273     property_get("vold.decrypt", decrypt, "");
274 
275     bool encryptedAnimation = atoi(decrypt) != 0 || !strcmp("trigger_restart_min_framework", decrypt);
276 
277     if ((encryptedAnimation &&
278             (access(SYSTEM_ENCRYPTED_BOOTANIMATION_FILE, R_OK) == 0) &&
279             (mZip.open(SYSTEM_ENCRYPTED_BOOTANIMATION_FILE) == NO_ERROR)) ||
280 
281             ((access(USER_BOOTANIMATION_FILE, R_OK) == 0) &&
282             (mZip.open(USER_BOOTANIMATION_FILE) == NO_ERROR)) ||
283 
284             ((access(SYSTEM_BOOTANIMATION_FILE, R_OK) == 0) &&
285             (mZip.open(SYSTEM_BOOTANIMATION_FILE) == NO_ERROR))) {
286         mAndroidAnimation = false;
287     }
288 
289     return NO_ERROR;
290 }
291 
threadLoop()292 bool BootAnimation::threadLoop()
293 {
294     bool r;
295     if (mAndroidAnimation) {
296         r = android();
297     } else {
298         r = movie();
299     }
300 
301     // No need to force exit anymore
302     property_set(EXIT_PROP_NAME, "0");
303 
304     eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
305     eglDestroyContext(mDisplay, mContext);
306     eglDestroySurface(mDisplay, mSurface);
307     mFlingerSurface.clear();
308     mFlingerSurfaceControl.clear();
309     eglTerminate(mDisplay);
310     IPCThreadState::self()->stopProcess();
311     return r;
312 }
313 
android()314 bool BootAnimation::android()
315 {
316     initTexture(&mAndroid[0], mAssets, "images/android-logo-mask.png");
317     initTexture(&mAndroid[1], mAssets, "images/android-logo-shine.png");
318 
319     // clear screen
320     glShadeModel(GL_FLAT);
321     glDisable(GL_DITHER);
322     glDisable(GL_SCISSOR_TEST);
323     glClearColor(0,0,0,1);
324     glClear(GL_COLOR_BUFFER_BIT);
325     eglSwapBuffers(mDisplay, mSurface);
326 
327     glEnable(GL_TEXTURE_2D);
328     glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
329 
330     const GLint xc = (mWidth  - mAndroid[0].w) / 2;
331     const GLint yc = (mHeight - mAndroid[0].h) / 2;
332     const Rect updateRect(xc, yc, xc + mAndroid[0].w, yc + mAndroid[0].h);
333 
334     glScissor(updateRect.left, mHeight - updateRect.bottom, updateRect.width(),
335             updateRect.height());
336 
337     // Blend state
338     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
339     glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
340 
341     const nsecs_t startTime = systemTime();
342     do {
343         nsecs_t now = systemTime();
344         double time = now - startTime;
345         float t = 4.0f * float(time / us2ns(16667)) / mAndroid[1].w;
346         GLint offset = (1 - (t - floorf(t))) * mAndroid[1].w;
347         GLint x = xc - offset;
348 
349         glDisable(GL_SCISSOR_TEST);
350         glClear(GL_COLOR_BUFFER_BIT);
351 
352         glEnable(GL_SCISSOR_TEST);
353         glDisable(GL_BLEND);
354         glBindTexture(GL_TEXTURE_2D, mAndroid[1].name);
355         glDrawTexiOES(x,                 yc, 0, mAndroid[1].w, mAndroid[1].h);
356         glDrawTexiOES(x + mAndroid[1].w, yc, 0, mAndroid[1].w, mAndroid[1].h);
357 
358         glEnable(GL_BLEND);
359         glBindTexture(GL_TEXTURE_2D, mAndroid[0].name);
360         glDrawTexiOES(xc, yc, 0, mAndroid[0].w, mAndroid[0].h);
361 
362         EGLBoolean res = eglSwapBuffers(mDisplay, mSurface);
363         if (res == EGL_FALSE)
364             break;
365 
366         // 12fps: don't animate too fast to preserve CPU
367         const nsecs_t sleepTime = 83333 - ns2us(systemTime() - now);
368         if (sleepTime > 0)
369             usleep(sleepTime);
370 
371         checkExit();
372     } while (!exitPending());
373 
374     glDeleteTextures(1, &mAndroid[0].name);
375     glDeleteTextures(1, &mAndroid[1].name);
376     return false;
377 }
378 
379 
checkExit()380 void BootAnimation::checkExit() {
381     // Allow surface flinger to gracefully request shutdown
382     char value[PROPERTY_VALUE_MAX];
383     property_get(EXIT_PROP_NAME, value, "0");
384     int exitnow = atoi(value);
385     if (exitnow) {
386         requestExit();
387     }
388 }
389 
movie()390 bool BootAnimation::movie()
391 {
392     ZipFileRO& zip(mZip);
393 
394     size_t numEntries = zip.getNumEntries();
395     ZipEntryRO desc = zip.findEntryByName("desc.txt");
396     FileMap* descMap = zip.createEntryFileMap(desc);
397     ALOGE_IF(!descMap, "descMap is null");
398     if (!descMap) {
399         return false;
400     }
401 
402     String8 desString((char const*)descMap->getDataPtr(),
403             descMap->getDataLength());
404     char const* s = desString.string();
405 
406     Animation animation;
407 
408     // Parse the description file
409     for (;;) {
410         const char* endl = strstr(s, "\n");
411         if (!endl) break;
412         String8 line(s, endl - s);
413         const char* l = line.string();
414         int fps, width, height, count, pause;
415         char path[256];
416         char pathType;
417         if (sscanf(l, "%d %d %d", &width, &height, &fps) == 3) {
418             //LOGD("> w=%d, h=%d, fps=%d", width, height, fps);
419             animation.width = width;
420             animation.height = height;
421             animation.fps = fps;
422         }
423         else if (sscanf(l, " %c %d %d %s", &pathType, &count, &pause, path) == 4) {
424             //LOGD("> type=%c, count=%d, pause=%d, path=%s", pathType, count, pause, path);
425             Animation::Part part;
426             part.playUntilComplete = pathType == 'c';
427             part.count = count;
428             part.pause = pause;
429             part.path = path;
430             animation.parts.add(part);
431         }
432 
433         s = ++endl;
434     }
435 
436     // read all the data structures
437     const size_t pcount = animation.parts.size();
438     for (size_t i=0 ; i<numEntries ; i++) {
439         char name[256];
440         ZipEntryRO entry = zip.findEntryByIndex(i);
441         if (zip.getEntryFileName(entry, name, 256) == 0) {
442             const String8 entryName(name);
443             const String8 path(entryName.getPathDir());
444             const String8 leaf(entryName.getPathLeaf());
445             if (leaf.size() > 0) {
446                 for (int j=0 ; j<pcount ; j++) {
447                     if (path == animation.parts[j].path) {
448                         int method;
449                         // supports only stored png files
450                         if (zip.getEntryInfo(entry, &method, 0, 0, 0, 0, 0)) {
451                             if (method == ZipFileRO::kCompressStored) {
452                                 FileMap* map = zip.createEntryFileMap(entry);
453                                 if (map) {
454                                     Animation::Frame frame;
455                                     frame.name = leaf;
456                                     frame.map = map;
457                                     Animation::Part& part(animation.parts.editItemAt(j));
458                                     part.frames.add(frame);
459                                 }
460                             }
461                         }
462                     }
463                 }
464             }
465         }
466     }
467 
468     // clear screen
469     glShadeModel(GL_FLAT);
470     glDisable(GL_DITHER);
471     glDisable(GL_SCISSOR_TEST);
472     glDisable(GL_BLEND);
473     glClearColor(0,0,0,1);
474     glClear(GL_COLOR_BUFFER_BIT);
475 
476     eglSwapBuffers(mDisplay, mSurface);
477 
478     glBindTexture(GL_TEXTURE_2D, 0);
479     glEnable(GL_TEXTURE_2D);
480     glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
481     glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
482     glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
483     glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
484     glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
485 
486     const int xc = (mWidth - animation.width) / 2;
487     const int yc = ((mHeight - animation.height) / 2);
488     nsecs_t lastFrame = systemTime();
489     nsecs_t frameDuration = s2ns(1) / animation.fps;
490 
491     Region clearReg(Rect(mWidth, mHeight));
492     clearReg.subtractSelf(Rect(xc, yc, xc+animation.width, yc+animation.height));
493 
494     for (int i=0 ; i<pcount ; i++) {
495         const Animation::Part& part(animation.parts[i]);
496         const size_t fcount = part.frames.size();
497         glBindTexture(GL_TEXTURE_2D, 0);
498 
499         for (int r=0 ; !part.count || r<part.count ; r++) {
500             // Exit any non playuntil complete parts immediately
501             if(exitPending() && !part.playUntilComplete)
502                 break;
503 
504             for (int j=0 ; j<fcount && (!exitPending() || part.playUntilComplete) ; j++) {
505                 const Animation::Frame& frame(part.frames[j]);
506                 nsecs_t lastFrame = systemTime();
507 
508                 if (r > 0) {
509                     glBindTexture(GL_TEXTURE_2D, frame.tid);
510                 } else {
511                     if (part.count != 1) {
512                         glGenTextures(1, &frame.tid);
513                         glBindTexture(GL_TEXTURE_2D, frame.tid);
514                         glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
515                         glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
516                     }
517                     initTexture(
518                             frame.map->getDataPtr(),
519                             frame.map->getDataLength());
520                 }
521 
522                 if (!clearReg.isEmpty()) {
523                     Region::const_iterator head(clearReg.begin());
524                     Region::const_iterator tail(clearReg.end());
525                     glEnable(GL_SCISSOR_TEST);
526                     while (head != tail) {
527                         const Rect& r(*head++);
528                         glScissor(r.left, mHeight - r.bottom,
529                                 r.width(), r.height());
530                         glClear(GL_COLOR_BUFFER_BIT);
531                     }
532                     glDisable(GL_SCISSOR_TEST);
533                 }
534                 glDrawTexiOES(xc, yc, 0, animation.width, animation.height);
535                 eglSwapBuffers(mDisplay, mSurface);
536 
537                 nsecs_t now = systemTime();
538                 nsecs_t delay = frameDuration - (now - lastFrame);
539                 //ALOGD("%lld, %lld", ns2ms(now - lastFrame), ns2ms(delay));
540                 lastFrame = now;
541 
542                 if (delay > 0) {
543                     struct timespec spec;
544                     spec.tv_sec  = (now + delay) / 1000000000;
545                     spec.tv_nsec = (now + delay) % 1000000000;
546                     int err;
547                     do {
548                         err = clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &spec, NULL);
549                     } while (err<0 && errno == EINTR);
550                 }
551 
552                 checkExit();
553             }
554 
555             usleep(part.pause * ns2us(frameDuration));
556 
557             // For infinite parts, we've now played them at least once, so perhaps exit
558             if(exitPending() && !part.count)
559                 break;
560         }
561 
562         // free the textures for this part
563         if (part.count != 1) {
564             for (int j=0 ; j<fcount ; j++) {
565                 const Animation::Frame& frame(part.frames[j]);
566                 glDeleteTextures(1, &frame.tid);
567             }
568         }
569     }
570 
571     return false;
572 }
573 
574 // ---------------------------------------------------------------------------
575 
576 }
577 ; // namespace android
578