Preload zip before waiting for surface flinger

This saves about 200 msec by preloading media zip file before waiting
for surface flinger becomes ready.

Android Auto results:
BootAnimation: BootAnimationPreloadTiming start time: 8261ms
BootAnimation: BootAnimationPreloadStopTiming start time: 8508ms

Bug: 62056504

Test: adb logcat -s BootAnimation
Change-Id: Iaedf774983a66c2838452c45a04b3a1f4c728f17

3 files changed, 64 insertions, 17 deletions

diff --git a/cmds/bootanimation/BootAnimation.cpp b/cmds/bootanimation/BootAnimation.cpp
index 46917e4f6062..a6c7cae9bdb6 100644
--- a/cmds/bootanimation/BootAnimation.cpp
+++ b/cmds/bootanimation/BootAnimation.cpp
@@ -110,13 +110,30 @@ BootAnimation::BootAnimation(sp<Callbacks> callbacks)
     } else {
         mShuttingDown = true;
     }
+    ALOGD("%sAnimationStartTiming start time: %" PRId64 "ms", mShuttingDown ? "Shutdown" : "Boot",
+            elapsedRealtime());
+}
+
+BootAnimation::~BootAnimation() {
+    if (mAnimation != nullptr) {
+        releaseAnimation(mAnimation);
+        mAnimation = nullptr;
+    }
+    ALOGD("%sAnimationStopTiming start time: %" PRId64 "ms", mShuttingDown ? "Shutdown" : "Boot",
+            elapsedRealtime());
 }
 
 void BootAnimation::onFirstRef() {
     status_t err = mSession->linkToComposerDeath(this);
     SLOGE_IF(err, "linkToComposerDeath failed (%s) ", strerror(-err));
     if (err == NO_ERROR) {
-        run("BootAnimation", PRIORITY_DISPLAY);
+        // Load the animation content -- this can be slow (eg 200ms)
+        // called before waitForSurfaceFlinger() in main() to avoid wait
+        ALOGD("%sAnimationPreloadTiming start time: %" PRId64 "ms",
+                mShuttingDown ? "Shutdown" : "Boot", elapsedRealtime());
+        preloadAnimation();
+        ALOGD("%sAnimationPreloadStopTiming start time: %" PRId64 "ms",
+                mShuttingDown ? "Shutdown" : "Boot", elapsedRealtime());
     }
 }
 
@@ -306,6 +323,20 @@ status_t BootAnimation::readyToRun() {
     mFlingerSurface = s;
     mTargetInset = -1;
 
+    return NO_ERROR;
+}
+
+bool BootAnimation::preloadAnimation() {
+    findBootAnimationFile();
+    if (!mZipFileName.isEmpty()) {
+        mAnimation = loadAnimation(mZipFileName);
+        return (mAnimation != nullptr);
+    }
+
+    return false;
+}
+
+void BootAnimation::findBootAnimationFile() {
     // 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];
@@ -320,7 +351,7 @@ status_t BootAnimation::readyToRun() {
         for (const char* f : encryptedBootFiles) {
             if (access(f, R_OK) == 0) {
                 mZipFileName = f;
-                return NO_ERROR;
+                return;
             }
         }
     }
@@ -332,10 +363,9 @@ status_t BootAnimation::readyToRun() {
     for (const char* f : (!mShuttingDown ? bootFiles : shutdownFiles)) {
         if (access(f, R_OK) == 0) {
             mZipFileName = f;
-            return NO_ERROR;
+            return;
         }
     }
-    return NO_ERROR;
 }
 
 bool BootAnimation::threadLoop()
@@ -790,8 +820,6 @@ bool BootAnimation::preloadZip(Animation& animation)
         }
     }
 
-    mCallbacks->init(animation.parts);
-
     zip->endIteration(cookie);
 
     return true;
@@ -799,13 +827,25 @@ bool BootAnimation::preloadZip(Animation& animation)
 
 bool BootAnimation::movie()
 {
-    Animation* animation = loadAnimation(mZipFileName);
-    if (animation == NULL)
+    if (mAnimation == nullptr) {
+        mAnimation = loadAnimation(mZipFileName);
+    }
+
+    if (mAnimation == nullptr)
         return false;
 
+    // mCallbacks->init() may get called recursively,
+    // this loop is needed to get the same results
+    for (const Animation::Part& part : mAnimation->parts) {
+        if (part.animation != nullptr) {
+            mCallbacks->init(part.animation->parts);
+        }
+    }
+    mCallbacks->init(mAnimation->parts);
+
     bool anyPartHasClock = false;
-    for (size_t i=0; i < animation->parts.size(); i++) {
-        if(validClock(animation->parts[i])) {
+    for (size_t i=0; i < mAnimation->parts.size(); i++) {
+        if(validClock(mAnimation->parts[i])) {
             anyPartHasClock = true;
             break;
         }
@@ -846,7 +886,7 @@ bool BootAnimation::movie()
     bool clockFontInitialized = false;
     if (mClockEnabled) {
         clockFontInitialized =
-            (initFont(&animation->clockFont, CLOCK_FONT_ASSET) == NO_ERROR);
+            (initFont(&mAnimation->clockFont, CLOCK_FONT_ASSET) == NO_ERROR);
         mClockEnabled = clockFontInitialized;
     }
 
@@ -855,7 +895,7 @@ bool BootAnimation::movie()
         mTimeCheckThread->run("BootAnimation::TimeCheckThread", PRIORITY_NORMAL);
     }
 
-    playAnimation(*animation);
+    playAnimation(*mAnimation);
 
     if (mTimeCheckThread != nullptr) {
         mTimeCheckThread->requestExit();
@@ -863,10 +903,11 @@ bool BootAnimation::movie()
     }
 
     if (clockFontInitialized) {
-        glDeleteTextures(1, &animation->clockFont.texture.name);
+        glDeleteTextures(1, &mAnimation->clockFont.texture.name);
     }
 
-    releaseAnimation(animation);
+    releaseAnimation(mAnimation);
+    mAnimation = nullptr;
 
     return false;
 }
diff --git a/cmds/bootanimation/BootAnimation.h b/cmds/bootanimation/BootAnimation.h
index 19616cb790c7..dc19fb09ef1d 100644
--- a/cmds/bootanimation/BootAnimation.h
+++ b/cmds/bootanimation/BootAnimation.h
@@ -115,6 +115,7 @@ public:
     };
 
     explicit BootAnimation(sp<Callbacks> callbacks);
+    virtual ~BootAnimation();
 
     sp<SurfaceComposerClient> session() const;
 
@@ -155,6 +156,8 @@ private:
     void releaseAnimation(Animation*) const;
     bool parseAnimationDesc(Animation&);
     bool preloadZip(Animation &animation);
+    void findBootAnimationFile();
+    bool preloadAnimation();
 
     void checkExit();
 
@@ -182,6 +185,7 @@ private:
     SortedVector<String8> mLoadedFiles;
     sp<TimeCheckThread> mTimeCheckThread = nullptr;
     sp<Callbacks> mCallbacks;
+    Animation* mAnimation = nullptr;
 };
 
 // ---------------------------------------------------------------------------
diff --git a/cmds/bootanimation/bootanimation_main.cpp b/cmds/bootanimation/bootanimation_main.cpp
index a52a5e92a840..6c7b3e51ff8d 100644
--- a/cmds/bootanimation/bootanimation_main.cpp
+++ b/cmds/bootanimation/bootanimation_main.cpp
@@ -44,14 +44,16 @@ int main()
         sp<ProcessState> proc(ProcessState::self());
         ProcessState::self()->startThreadPool();
 
+        // create the boot animation object (may take up to 200ms for 2MB zip)
+        sp<BootAnimation> boot = new BootAnimation(audioplay::createAnimationCallbacks());
+
         waitForSurfaceFlinger();
 
-        // create the boot animation object
-        sp<BootAnimation> boot = new BootAnimation(audioplay::createAnimationCallbacks());
+        boot->run("BootAnimation", PRIORITY_DISPLAY);
+
         ALOGV("Boot animation set up. Joining pool.");
 
         IPCThreadState::self()->joinThreadPool();
     }
-    ALOGV("Boot animation exit");
     return 0;
 }