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      1 /*
      2  * Copyright (C) 2011 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 "rs.h"
     18 #include "rsDevice.h"
     19 #include "rsContext.h"
     20 #include "rsThreadIO.h"
     21 
     22 #include "rsgApiStructs.h"
     23 
     24 #ifndef RS_COMPATIBILITY_LIB
     25 #include "rsMesh.h"
     26 #include <gui/DisplayEventReceiver.h>
     27 #endif
     28 
     29 #include <sys/types.h>
     30 #include <sys/resource.h>
     31 #include <sched.h>
     32 
     33 #include <sys/syscall.h>
     34 #include <string.h>
     35 #include <dlfcn.h>
     36 #include <inttypes.h>
     37 #include <unistd.h>
     38 
     39 #if !defined(RS_SERVER) && !defined(RS_COMPATIBILITY_LIB) && \
     40         defined(HAVE_ANDROID_OS)
     41 #include <cutils/properties.h>
     42 #endif
     43 
     44 #ifdef RS_COMPATIBILITY_LIB
     45 #include "rsCompatibilityLib.h"
     46 #endif
     47 
     48 #ifdef RS_SERVER
     49 // Android exposes gettid(), standard Linux does not
     50 static pid_t gettid() {
     51     return syscall(SYS_gettid);
     52 }
     53 #endif
     54 
     55 using namespace android;
     56 using namespace android::renderscript;
     57 
     58 pthread_mutex_t Context::gInitMutex = PTHREAD_MUTEX_INITIALIZER;
     59 pthread_mutex_t Context::gMessageMutex = PTHREAD_MUTEX_INITIALIZER;
     60 pthread_mutex_t Context::gLibMutex = PTHREAD_MUTEX_INITIALIZER;
     61 
     62 bool Context::initGLThread() {
     63     pthread_mutex_lock(&gInitMutex);
     64 
     65     if (!mHal.funcs.initGraphics(this)) {
     66         pthread_mutex_unlock(&gInitMutex);
     67         ALOGE("%p initGraphics failed", this);
     68         return false;
     69     }
     70 
     71     pthread_mutex_unlock(&gInitMutex);
     72     return true;
     73 }
     74 
     75 void Context::deinitEGL() {
     76 #ifndef RS_COMPATIBILITY_LIB
     77     mHal.funcs.shutdownGraphics(this);
     78 #endif
     79 }
     80 
     81 Context::PushState::PushState(Context *con) {
     82     mRsc = con;
     83 #ifndef RS_COMPATIBILITY_LIB
     84     if (con->mIsGraphicsContext) {
     85         mFragment.set(con->getProgramFragment());
     86         mVertex.set(con->getProgramVertex());
     87         mStore.set(con->getProgramStore());
     88         mRaster.set(con->getProgramRaster());
     89         mFont.set(con->getFont());
     90     }
     91 #endif
     92 }
     93 
     94 Context::PushState::~PushState() {
     95 #ifndef RS_COMPATIBILITY_LIB
     96     if (mRsc->mIsGraphicsContext) {
     97         mRsc->setProgramFragment(mFragment.get());
     98         mRsc->setProgramVertex(mVertex.get());
     99         mRsc->setProgramStore(mStore.get());
    100         mRsc->setProgramRaster(mRaster.get());
    101         mRsc->setFont(mFont.get());
    102     }
    103 #endif
    104 }
    105 
    106 
    107 uint32_t Context::runScript(Script *s) {
    108     PushState ps(this);
    109 
    110     uint32_t ret = s->run(this);
    111     return ret;
    112 }
    113 
    114 uint32_t Context::runRootScript() {
    115     timerSet(RS_TIMER_SCRIPT);
    116 #ifndef RS_COMPATIBILITY_LIB
    117     mStateFragmentStore.mLast.clear();
    118 #endif
    119     watchdog.inRoot = true;
    120     uint32_t ret = runScript(mRootScript.get());
    121     watchdog.inRoot = false;
    122 
    123     return ret;
    124 }
    125 
    126 uint64_t Context::getTime() const {
    127 #ifndef ANDROID_RS_SERIALIZE
    128     struct timespec t;
    129     clock_gettime(CLOCK_MONOTONIC, &t);
    130     return t.tv_nsec + ((uint64_t)t.tv_sec * 1000 * 1000 * 1000);
    131 #else
    132     return 0;
    133 #endif //ANDROID_RS_SERIALIZE
    134 }
    135 
    136 void Context::timerReset() {
    137     for (int ct=0; ct < _RS_TIMER_TOTAL; ct++) {
    138         mTimers[ct] = 0;
    139     }
    140 }
    141 
    142 void Context::timerInit() {
    143     mTimeLast = getTime();
    144     mTimeFrame = mTimeLast;
    145     mTimeLastFrame = mTimeLast;
    146     mTimerActive = RS_TIMER_INTERNAL;
    147     mAverageFPSFrameCount = 0;
    148     mAverageFPSStartTime = mTimeLast;
    149     mAverageFPS = 0;
    150     timerReset();
    151 }
    152 
    153 void Context::timerFrame() {
    154     mTimeLastFrame = mTimeFrame;
    155     mTimeFrame = getTime();
    156     // Update average fps
    157     const uint64_t averageFramerateInterval = 1000 * 1000000;
    158     mAverageFPSFrameCount ++;
    159     uint64_t inverval = mTimeFrame - mAverageFPSStartTime;
    160     if (inverval >= averageFramerateInterval) {
    161         inverval = inverval / 1000000;
    162         mAverageFPS = (mAverageFPSFrameCount * 1000) / inverval;
    163         mAverageFPSFrameCount = 0;
    164         mAverageFPSStartTime = mTimeFrame;
    165     }
    166 }
    167 
    168 void Context::timerSet(Timers tm) {
    169     uint64_t last = mTimeLast;
    170     mTimeLast = getTime();
    171     mTimers[mTimerActive] += mTimeLast - last;
    172     mTimerActive = tm;
    173 }
    174 
    175 void Context::timerPrint() {
    176     double total = 0;
    177     for (int ct = 0; ct < _RS_TIMER_TOTAL; ct++) {
    178         total += mTimers[ct];
    179     }
    180     uint64_t frame = mTimeFrame - mTimeLastFrame;
    181     mTimeMSLastFrame = frame / 1000000;
    182     mTimeMSLastScript = mTimers[RS_TIMER_SCRIPT] / 1000000;
    183     mTimeMSLastSwap = mTimers[RS_TIMER_CLEAR_SWAP] / 1000000;
    184 
    185 
    186     if (props.mLogTimes) {
    187         ALOGV("RS: Frame (%i),   Script %2.1f%% (%i),  Swap %2.1f%% (%i),  Idle %2.1f%% (%" PRIi64 "),  "
    188               "Internal %2.1f%% (%" PRIi64 "), Avg fps: %u",
    189              mTimeMSLastFrame,
    190              100.0 * mTimers[RS_TIMER_SCRIPT] / total, mTimeMSLastScript,
    191              100.0 * mTimers[RS_TIMER_CLEAR_SWAP] / total, mTimeMSLastSwap,
    192              100.0 * mTimers[RS_TIMER_IDLE] / total, mTimers[RS_TIMER_IDLE] / 1000000,
    193              100.0 * mTimers[RS_TIMER_INTERNAL] / total, mTimers[RS_TIMER_INTERNAL] / 1000000,
    194              mAverageFPS);
    195     }
    196 }
    197 
    198 bool Context::setupCheck() {
    199 #ifndef RS_COMPATIBILITY_LIB
    200     mFragmentStore->setup(this, &mStateFragmentStore);
    201     mFragment->setup(this, &mStateFragment);
    202     mRaster->setup(this, &mStateRaster);
    203     mVertex->setup(this, &mStateVertex);
    204     mFBOCache.setup(this);
    205 #endif
    206     return true;
    207 }
    208 
    209 #ifndef RS_COMPATIBILITY_LIB
    210 void Context::setupProgramStore() {
    211     mFragmentStore->setup(this, &mStateFragmentStore);
    212 }
    213 #endif
    214 
    215 static uint32_t getProp(const char *str) {
    216 #if !defined(RS_SERVER) && defined(HAVE_ANDROID_OS)
    217     char buf[PROPERTY_VALUE_MAX];
    218     property_get(str, buf, "0");
    219     return atoi(buf);
    220 #else
    221     return 0;
    222 #endif
    223 }
    224 
    225 void Context::displayDebugStats() {
    226 #ifndef RS_COMPATIBILITY_LIB
    227     char buffer[128];
    228     sprintf(buffer, "Avg fps %u, Frame %i ms, Script %i ms", mAverageFPS, mTimeMSLastFrame, mTimeMSLastScript);
    229     float oldR, oldG, oldB, oldA;
    230     mStateFont.getFontColor(&oldR, &oldG, &oldB, &oldA);
    231     uint32_t bufferLen = strlen(buffer);
    232 
    233     ObjectBaseRef<Font> lastFont(getFont());
    234     setFont(NULL);
    235     float shadowCol = 0.1f;
    236     mStateFont.setFontColor(shadowCol, shadowCol, shadowCol, 1.0f);
    237     mStateFont.renderText(buffer, bufferLen, 5, getHeight() - 6);
    238 
    239     mStateFont.setFontColor(1.0f, 0.7f, 0.0f, 1.0f);
    240     mStateFont.renderText(buffer, bufferLen, 4, getHeight() - 7);
    241 
    242     setFont(lastFont.get());
    243     mStateFont.setFontColor(oldR, oldG, oldB, oldA);
    244 #endif
    245 }
    246 
    247 bool Context::loadRuntime(const char* filename, Context* rsc) {
    248 
    249     // TODO: store the driverSO somewhere so we can dlclose later
    250     void *driverSO = NULL;
    251 
    252     driverSO = dlopen(filename, RTLD_LAZY);
    253     if (driverSO == NULL) {
    254         ALOGE("Failed loading RS driver: %s", dlerror());
    255         return false;
    256     }
    257 
    258     // Need to call dlerror() to clear buffer before using it for dlsym().
    259     (void) dlerror();
    260     typedef bool (*HalSig)(Context*, uint32_t, uint32_t);
    261     HalSig halInit = (HalSig) dlsym(driverSO, "rsdHalInit");
    262 
    263     // If we can't find the C variant, we go looking for the C++ version.
    264     if (halInit == NULL) {
    265         ALOGW("Falling back to find C++ rsdHalInit: %s", dlerror());
    266         halInit = (HalSig) dlsym(driverSO,
    267                 "_Z10rsdHalInitPN7android12renderscript7ContextEjj");
    268     }
    269 
    270     if (halInit == NULL) {
    271         dlclose(driverSO);
    272         ALOGE("Failed to find rsdHalInit: %s", dlerror());
    273         return false;
    274     }
    275 
    276     if (!(*halInit)(rsc, 0, 0)) {
    277         dlclose(driverSO);
    278         ALOGE("Hal init failed");
    279         return false;
    280     }
    281 
    282     //validate HAL struct
    283 
    284 
    285     return true;
    286 }
    287 
    288 extern "C" bool rsdHalInit(RsContext c, uint32_t version_major, uint32_t version_minor);
    289 
    290 void * Context::threadProc(void *vrsc) {
    291     Context *rsc = static_cast<Context *>(vrsc);
    292 #ifndef ANDROID_RS_SERIALIZE
    293     rsc->mNativeThreadId = gettid();
    294 #ifndef RS_COMPATIBILITY_LIB
    295     if (!rsc->isSynchronous()) {
    296         setpriority(PRIO_PROCESS, rsc->mNativeThreadId, ANDROID_PRIORITY_DISPLAY);
    297     }
    298     rsc->mThreadPriority = ANDROID_PRIORITY_DISPLAY;
    299 #else
    300     if (!rsc->isSynchronous()) {
    301         setpriority(PRIO_PROCESS, rsc->mNativeThreadId, -4);
    302     }
    303     rsc->mThreadPriority = -4;
    304 #endif
    305 #endif //ANDROID_RS_SERIALIZE
    306     rsc->props.mLogTimes = getProp("debug.rs.profile") != 0;
    307     rsc->props.mLogScripts = getProp("debug.rs.script") != 0;
    308     rsc->props.mLogObjects = getProp("debug.rs.object") != 0;
    309     rsc->props.mLogShaders = getProp("debug.rs.shader") != 0;
    310     rsc->props.mLogShadersAttr = getProp("debug.rs.shader.attributes") != 0;
    311     rsc->props.mLogShadersUniforms = getProp("debug.rs.shader.uniforms") != 0;
    312     rsc->props.mLogVisual = getProp("debug.rs.visual") != 0;
    313     rsc->props.mDebugMaxThreads = getProp("debug.rs.max-threads");
    314 
    315     if (getProp("debug.rs.debug") != 0) {
    316         ALOGD("Forcing debug context due to debug.rs.debug.");
    317         rsc->mContextType = RS_CONTEXT_TYPE_DEBUG;
    318     }
    319 
    320     bool loadDefault = true;
    321 
    322     // Provide a mechanism for dropping in a different RS driver.
    323 #ifndef RS_COMPATIBILITY_LIB
    324 #ifdef OVERRIDE_RS_DRIVER
    325 #define XSTR(S) #S
    326 #define STR(S) XSTR(S)
    327 #define OVERRIDE_RS_DRIVER_STRING STR(OVERRIDE_RS_DRIVER)
    328 
    329     if (getProp("debug.rs.default-CPU-driver") != 0) {
    330         ALOGD("Skipping override driver and loading default CPU driver");
    331     } else if (rsc->mForceCpu || rsc->mIsGraphicsContext) {
    332         ALOGV("Application requested CPU execution");
    333     } else if (rsc->getContextType() == RS_CONTEXT_TYPE_DEBUG) {
    334         ALOGV("Application requested debug context");
    335     } else {
    336 #if defined(__LP64__) && defined(DISABLE_RS_64_BIT_DRIVER)
    337         // skip load
    338 #else
    339         if (loadRuntime(OVERRIDE_RS_DRIVER_STRING, rsc)) {
    340             ALOGV("Successfully loaded runtime: %s", OVERRIDE_RS_DRIVER_STRING);
    341             loadDefault = false;
    342         } else {
    343             ALOGE("Failed to load runtime %s, loading default", OVERRIDE_RS_DRIVER_STRING);
    344         }
    345 #endif
    346     }
    347 
    348 #undef XSTR
    349 #undef STR
    350 #endif  // OVERRIDE_RS_DRIVER
    351 
    352     if (loadDefault) {
    353         if (!loadRuntime("libRSDriver.so", rsc)) {
    354             ALOGE("Failed to load default runtime!");
    355             rsc->setError(RS_ERROR_FATAL_DRIVER, "Failed loading RS driver");
    356             return NULL;
    357         }
    358     }
    359 #else // RS_COMPATIBILITY_LIB
    360     if (rsdHalInit(rsc, 0, 0) != true) {
    361         return NULL;
    362     }
    363 #endif
    364 
    365 
    366     rsc->mHal.funcs.setPriority(rsc, rsc->mThreadPriority);
    367 
    368 #ifndef RS_COMPATIBILITY_LIB
    369     if (rsc->mIsGraphicsContext) {
    370         if (!rsc->initGLThread()) {
    371             rsc->setError(RS_ERROR_OUT_OF_MEMORY, "Failed initializing GL");
    372             return NULL;
    373         }
    374 
    375         rsc->mStateRaster.init(rsc);
    376         rsc->setProgramRaster(NULL);
    377         rsc->mStateVertex.init(rsc);
    378         rsc->setProgramVertex(NULL);
    379         rsc->mStateFragment.init(rsc);
    380         rsc->setProgramFragment(NULL);
    381         rsc->mStateFragmentStore.init(rsc);
    382         rsc->setProgramStore(NULL);
    383         rsc->mStateFont.init(rsc);
    384         rsc->setFont(NULL);
    385         rsc->mStateSampler.init(rsc);
    386         rsc->mFBOCache.init(rsc);
    387     }
    388 #endif
    389 
    390     rsc->mRunning = true;
    391 
    392     if (rsc->isSynchronous()) {
    393         return NULL;
    394     }
    395 
    396     if (!rsc->mIsGraphicsContext) {
    397         while (!rsc->mExit) {
    398             rsc->mIO.playCoreCommands(rsc, -1);
    399         }
    400 #ifndef RS_COMPATIBILITY_LIB
    401     } else {
    402 #ifndef ANDROID_RS_SERIALIZE
    403         DisplayEventReceiver displayEvent;
    404         DisplayEventReceiver::Event eventBuffer[1];
    405 #endif
    406         int vsyncRate = 0;
    407         int targetRate = 0;
    408 
    409         bool drawOnce = false;
    410         while (!rsc->mExit) {
    411             rsc->timerSet(RS_TIMER_IDLE);
    412 
    413 #ifndef ANDROID_RS_SERIALIZE
    414             if (!rsc->mRootScript.get() || !rsc->mHasSurface || rsc->mPaused) {
    415                 targetRate = 0;
    416             }
    417 
    418             if (vsyncRate != targetRate) {
    419                 displayEvent.setVsyncRate(targetRate);
    420                 vsyncRate = targetRate;
    421             }
    422             if (targetRate) {
    423                 drawOnce |= rsc->mIO.playCoreCommands(rsc, displayEvent.getFd());
    424                 while (displayEvent.getEvents(eventBuffer, 1) != 0) {
    425                     //ALOGE("vs2 time past %lld", (rsc->getTime() - eventBuffer[0].header.timestamp) / 1000000);
    426                 }
    427             } else
    428 #endif
    429             {
    430                 drawOnce |= rsc->mIO.playCoreCommands(rsc, -1);
    431             }
    432 
    433             if ((rsc->mRootScript.get() != NULL) && rsc->mHasSurface &&
    434                 (targetRate || drawOnce) && !rsc->mPaused) {
    435 
    436                 drawOnce = false;
    437                 targetRate = ((rsc->runRootScript() + 15) / 16);
    438 
    439                 if (rsc->props.mLogVisual) {
    440                     rsc->displayDebugStats();
    441                 }
    442 
    443                 rsc->timerSet(RS_TIMER_CLEAR_SWAP);
    444                 rsc->mHal.funcs.swap(rsc);
    445                 rsc->timerFrame();
    446                 rsc->timerSet(RS_TIMER_INTERNAL);
    447                 rsc->timerPrint();
    448                 rsc->timerReset();
    449             }
    450         }
    451 #endif
    452     }
    453 
    454     //ALOGV("%p RS Thread exiting", rsc);
    455 
    456 #ifndef RS_COMPATIBILITY_LIB
    457     if (rsc->mIsGraphicsContext) {
    458         pthread_mutex_lock(&gInitMutex);
    459         rsc->deinitEGL();
    460         pthread_mutex_unlock(&gInitMutex);
    461     }
    462 #endif
    463 
    464     //ALOGV("%p RS Thread exited", rsc);
    465     return NULL;
    466 }
    467 
    468 void Context::destroyWorkerThreadResources() {
    469     //ALOGV("destroyWorkerThreadResources 1");
    470     ObjectBase::zeroAllUserRef(this);
    471 #ifndef RS_COMPATIBILITY_LIB
    472     if (mIsGraphicsContext) {
    473          mRaster.clear();
    474          mFragment.clear();
    475          mVertex.clear();
    476          mFragmentStore.clear();
    477          mFont.clear();
    478          mRootScript.clear();
    479          mStateRaster.deinit(this);
    480          mStateVertex.deinit(this);
    481          mStateFragment.deinit(this);
    482          mStateFragmentStore.deinit(this);
    483          mStateFont.deinit(this);
    484          mStateSampler.deinit(this);
    485          mFBOCache.deinit(this);
    486     }
    487 #endif
    488     ObjectBase::freeAllChildren(this);
    489     mExit = true;
    490     //ALOGV("destroyWorkerThreadResources 2");
    491 }
    492 
    493 void Context::printWatchdogInfo(void *ctx) {
    494     Context *rsc = (Context *)ctx;
    495     if (rsc->watchdog.command && rsc->watchdog.file) {
    496         ALOGE("RS watchdog timeout: %i  %s  line %i %s", rsc->watchdog.inRoot,
    497              rsc->watchdog.command, rsc->watchdog.line, rsc->watchdog.file);
    498     } else {
    499         ALOGE("RS watchdog timeout: %i", rsc->watchdog.inRoot);
    500     }
    501 }
    502 
    503 
    504 void Context::setPriority(int32_t p) {
    505     // Note: If we put this in the proper "background" policy
    506     // the wallpapers can become completly unresponsive at times.
    507     // This is probably not what we want for something the user is actively
    508     // looking at.
    509     mThreadPriority = p;
    510     setpriority(PRIO_PROCESS, mNativeThreadId, p);
    511     mHal.funcs.setPriority(this, mThreadPriority);
    512 }
    513 
    514 Context::Context() {
    515     mDev = NULL;
    516     mRunning = false;
    517     mExit = false;
    518     mPaused = false;
    519     mObjHead = NULL;
    520     mError = RS_ERROR_NONE;
    521     mTargetSdkVersion = 14;
    522     mDPI = 96;
    523     mIsContextLite = false;
    524     memset(&watchdog, 0, sizeof(watchdog));
    525     memset(&mHal, 0, sizeof(mHal));
    526     mForceCpu = false;
    527     mContextType = RS_CONTEXT_TYPE_NORMAL;
    528     mSynchronous = false;
    529 }
    530 
    531 Context * Context::createContext(Device *dev, const RsSurfaceConfig *sc,
    532                                  RsContextType ct, uint32_t flags) {
    533     Context * rsc = new Context();
    534 
    535     if (flags & RS_CONTEXT_LOW_LATENCY) {
    536         rsc->mForceCpu = true;
    537     }
    538     if (flags & RS_CONTEXT_SYNCHRONOUS) {
    539         rsc->mSynchronous = true;
    540     }
    541     rsc->mContextType = ct;
    542     rsc->mHal.flags = flags;
    543 
    544     if (!rsc->initContext(dev, sc)) {
    545         delete rsc;
    546         return NULL;
    547     }
    548     return rsc;
    549 }
    550 
    551 Context * Context::createContextLite() {
    552     Context * rsc = new Context();
    553     rsc->mIsContextLite = true;
    554     return rsc;
    555 }
    556 
    557 bool Context::initContext(Device *dev, const RsSurfaceConfig *sc) {
    558     pthread_mutex_lock(&gInitMutex);
    559 
    560     mIO.init();
    561     mIO.setTimeoutCallback(printWatchdogInfo, this, 2e9);
    562 
    563     dev->addContext(this);
    564     mDev = dev;
    565     if (sc) {
    566         mUserSurfaceConfig = *sc;
    567     } else {
    568         memset(&mUserSurfaceConfig, 0, sizeof(mUserSurfaceConfig));
    569     }
    570 
    571     mIsGraphicsContext = sc != NULL;
    572 
    573     int status;
    574     pthread_attr_t threadAttr;
    575 
    576     pthread_mutex_unlock(&gInitMutex);
    577 
    578     // Global init done at this point.
    579 
    580     status = pthread_attr_init(&threadAttr);
    581     if (status) {
    582         ALOGE("Failed to init thread attribute.");
    583         return false;
    584     }
    585 
    586     mHasSurface = false;
    587 
    588     timerInit();
    589     timerSet(RS_TIMER_INTERNAL);
    590     if (mSynchronous) {
    591         threadProc(this);
    592 
    593         if (mError != RS_ERROR_NONE) {
    594             ALOGE("Errors during thread init (sync mode)");
    595             return false;
    596         }
    597     } else {
    598         status = pthread_create(&mThreadId, &threadAttr, threadProc, this);
    599         if (status) {
    600             ALOGE("Failed to start rs context thread.");
    601             return false;
    602         }
    603         while (!mRunning && (mError == RS_ERROR_NONE)) {
    604             usleep(100);
    605         }
    606 
    607         if (mError != RS_ERROR_NONE) {
    608             ALOGE("Errors during thread init");
    609             return false;
    610         }
    611 
    612         pthread_attr_destroy(&threadAttr);
    613     }
    614     return true;
    615 }
    616 
    617 Context::~Context() {
    618     //ALOGV("%p Context::~Context", this);
    619 
    620     if (!mIsContextLite) {
    621         mPaused = false;
    622         void *res;
    623 
    624         mIO.shutdown();
    625         if (!mSynchronous) {
    626             pthread_join(mThreadId, &res);
    627         }
    628         rsAssert(mExit);
    629 
    630         if (mHal.funcs.shutdownDriver && mHal.drv) {
    631             mHal.funcs.shutdownDriver(this);
    632         }
    633 
    634         // Global structure cleanup.
    635         pthread_mutex_lock(&gInitMutex);
    636         if (mDev) {
    637             mDev->removeContext(this);
    638             mDev = NULL;
    639         }
    640         pthread_mutex_unlock(&gInitMutex);
    641     }
    642     //ALOGV("%p Context::~Context done", this);
    643 }
    644 
    645 #ifndef RS_COMPATIBILITY_LIB
    646 void Context::setSurface(uint32_t w, uint32_t h, RsNativeWindow sur) {
    647     rsAssert(mIsGraphicsContext);
    648     mHal.funcs.setSurface(this, w, h, sur);
    649 
    650     mHasSurface = sur != NULL;
    651     mWidth = w;
    652     mHeight = h;
    653 
    654     if (mWidth && mHeight) {
    655         mStateVertex.updateSize(this);
    656         mFBOCache.updateSize();
    657     }
    658 }
    659 
    660 uint32_t Context::getCurrentSurfaceWidth() const {
    661     for (uint32_t i = 0; i < mFBOCache.mHal.state.colorTargetsCount; i ++) {
    662         if (mFBOCache.mHal.state.colorTargets[i] != NULL) {
    663             return mFBOCache.mHal.state.colorTargets[i]->getType()->getDimX();
    664         }
    665     }
    666     if (mFBOCache.mHal.state.depthTarget != NULL) {
    667         return mFBOCache.mHal.state.depthTarget->getType()->getDimX();
    668     }
    669     return mWidth;
    670 }
    671 
    672 uint32_t Context::getCurrentSurfaceHeight() const {
    673     for (uint32_t i = 0; i < mFBOCache.mHal.state.colorTargetsCount; i ++) {
    674         if (mFBOCache.mHal.state.colorTargets[i] != NULL) {
    675             return mFBOCache.mHal.state.colorTargets[i]->getType()->getDimY();
    676         }
    677     }
    678     if (mFBOCache.mHal.state.depthTarget != NULL) {
    679         return mFBOCache.mHal.state.depthTarget->getType()->getDimY();
    680     }
    681     return mHeight;
    682 }
    683 
    684 void Context::pause() {
    685     rsAssert(mIsGraphicsContext);
    686     mPaused = true;
    687 }
    688 
    689 void Context::resume() {
    690     rsAssert(mIsGraphicsContext);
    691     mPaused = false;
    692 }
    693 
    694 void Context::setRootScript(Script *s) {
    695     rsAssert(mIsGraphicsContext);
    696     mRootScript.set(s);
    697 }
    698 
    699 void Context::setProgramStore(ProgramStore *pfs) {
    700     rsAssert(mIsGraphicsContext);
    701     if (pfs == NULL) {
    702         mFragmentStore.set(mStateFragmentStore.mDefault);
    703     } else {
    704         mFragmentStore.set(pfs);
    705     }
    706 }
    707 
    708 void Context::setProgramFragment(ProgramFragment *pf) {
    709     rsAssert(mIsGraphicsContext);
    710     if (pf == NULL) {
    711         mFragment.set(mStateFragment.mDefault);
    712     } else {
    713         mFragment.set(pf);
    714     }
    715 }
    716 
    717 void Context::setProgramRaster(ProgramRaster *pr) {
    718     rsAssert(mIsGraphicsContext);
    719     if (pr == NULL) {
    720         mRaster.set(mStateRaster.mDefault);
    721     } else {
    722         mRaster.set(pr);
    723     }
    724 }
    725 
    726 void Context::setProgramVertex(ProgramVertex *pv) {
    727     rsAssert(mIsGraphicsContext);
    728     if (pv == NULL) {
    729         mVertex.set(mStateVertex.mDefault);
    730     } else {
    731         mVertex.set(pv);
    732     }
    733 }
    734 
    735 void Context::setFont(Font *f) {
    736     rsAssert(mIsGraphicsContext);
    737     if (f == NULL) {
    738         mFont.set(mStateFont.mDefault);
    739     } else {
    740         mFont.set(f);
    741     }
    742 }
    743 #endif
    744 
    745 void Context::finish() {
    746     if (mHal.funcs.finish) {
    747         mHal.funcs.finish(this);
    748     }
    749 }
    750 
    751 void Context::assignName(ObjectBase *obj, const char *name, uint32_t len) {
    752     rsAssert(!obj->getName());
    753     obj->setName(name, len);
    754     mNames.add(obj);
    755 }
    756 
    757 void Context::removeName(ObjectBase *obj) {
    758     for (size_t ct=0; ct < mNames.size(); ct++) {
    759         if (obj == mNames[ct]) {
    760             mNames.removeAt(ct);
    761             return;
    762         }
    763     }
    764 }
    765 
    766 RsMessageToClientType Context::peekMessageToClient(size_t *receiveLen, uint32_t *subID) {
    767     return (RsMessageToClientType)mIO.getClientHeader(receiveLen, subID);
    768 }
    769 
    770 RsMessageToClientType Context::getMessageToClient(void *data, size_t *receiveLen, uint32_t *subID, size_t bufferLen) {
    771     return (RsMessageToClientType)mIO.getClientPayload(data, receiveLen, subID, bufferLen);
    772 }
    773 
    774 bool Context::sendMessageToClient(const void *data, RsMessageToClientType cmdID,
    775                                   uint32_t subID, size_t len, bool waitForSpace) const {
    776 
    777     pthread_mutex_lock(&gMessageMutex);
    778     bool ret = mIO.sendToClient(cmdID, subID, data, len, waitForSpace);
    779     pthread_mutex_unlock(&gMessageMutex);
    780     return ret;
    781 }
    782 
    783 void Context::initToClient() {
    784     while (!mRunning) {
    785         usleep(100);
    786     }
    787 }
    788 
    789 void Context::deinitToClient() {
    790     mIO.clientShutdown();
    791 }
    792 
    793 void Context::setError(RsError e, const char *msg) const {
    794     mError = e;
    795     sendMessageToClient(msg, RS_MESSAGE_TO_CLIENT_ERROR, e, strlen(msg) + 1, true);
    796 }
    797 
    798 
    799 void Context::dumpDebug() const {
    800     ALOGE("RS Context debug %p", this);
    801     ALOGE("RS Context debug");
    802 
    803     ALOGE(" RS width %i, height %i", mWidth, mHeight);
    804     ALOGE(" RS running %i, exit %i, paused %i", mRunning, mExit, mPaused);
    805     ALOGE(" RS pThreadID %li, nativeThreadID %i", (long int)mThreadId, mNativeThreadId);
    806 }
    807 
    808 ///////////////////////////////////////////////////////////////////////////////////////////
    809 //
    810 
    811 namespace android {
    812 namespace renderscript {
    813 
    814 void rsi_ContextFinish(Context *rsc) {
    815     rsc->finish();
    816 }
    817 
    818 void rsi_ContextBindRootScript(Context *rsc, RsScript vs) {
    819 #ifndef RS_COMPATIBILITY_LIB
    820     Script *s = static_cast<Script *>(vs);
    821     rsc->setRootScript(s);
    822 #endif
    823 }
    824 
    825 void rsi_ContextBindSampler(Context *rsc, uint32_t slot, RsSampler vs) {
    826     Sampler *s = static_cast<Sampler *>(vs);
    827 
    828     if (slot > RS_MAX_SAMPLER_SLOT) {
    829         ALOGE("Invalid sampler slot");
    830         return;
    831     }
    832 
    833     s->bindToContext(&rsc->mStateSampler, slot);
    834 }
    835 
    836 #ifndef RS_COMPATIBILITY_LIB
    837 void rsi_ContextBindProgramStore(Context *rsc, RsProgramStore vpfs) {
    838     ProgramStore *pfs = static_cast<ProgramStore *>(vpfs);
    839     rsc->setProgramStore(pfs);
    840 }
    841 
    842 void rsi_ContextBindProgramFragment(Context *rsc, RsProgramFragment vpf) {
    843     ProgramFragment *pf = static_cast<ProgramFragment *>(vpf);
    844     rsc->setProgramFragment(pf);
    845 }
    846 
    847 void rsi_ContextBindProgramRaster(Context *rsc, RsProgramRaster vpr) {
    848     ProgramRaster *pr = static_cast<ProgramRaster *>(vpr);
    849     rsc->setProgramRaster(pr);
    850 }
    851 
    852 void rsi_ContextBindProgramVertex(Context *rsc, RsProgramVertex vpv) {
    853     ProgramVertex *pv = static_cast<ProgramVertex *>(vpv);
    854     rsc->setProgramVertex(pv);
    855 }
    856 
    857 void rsi_ContextBindFont(Context *rsc, RsFont vfont) {
    858     Font *font = static_cast<Font *>(vfont);
    859     rsc->setFont(font);
    860 }
    861 #endif
    862 
    863 void rsi_AssignName(Context *rsc, RsObjectBase obj, const char *name, size_t name_length) {
    864     ObjectBase *ob = static_cast<ObjectBase *>(obj);
    865     rsc->assignName(ob, name, name_length);
    866 }
    867 
    868 void rsi_ObjDestroy(Context *rsc, void *optr) {
    869     ObjectBase *ob = static_cast<ObjectBase *>(optr);
    870     rsc->removeName(ob);
    871     ob->decUserRef();
    872 }
    873 
    874 #ifndef RS_COMPATIBILITY_LIB
    875 void rsi_ContextPause(Context *rsc) {
    876     rsc->pause();
    877 }
    878 
    879 void rsi_ContextResume(Context *rsc) {
    880     rsc->resume();
    881 }
    882 
    883 void rsi_ContextSetSurface(Context *rsc, uint32_t w, uint32_t h, RsNativeWindow sur) {
    884     rsc->setSurface(w, h, sur);
    885 }
    886 #endif
    887 
    888 void rsi_ContextSetPriority(Context *rsc, int32_t p) {
    889     rsc->setPriority(p);
    890 }
    891 
    892 void rsi_ContextDump(Context *rsc, int32_t bits) {
    893     ObjectBase::dumpAll(rsc);
    894 }
    895 
    896 void rsi_ContextDestroyWorker(Context *rsc) {
    897     rsc->destroyWorkerThreadResources();
    898 }
    899 
    900 void rsi_ContextDestroy(Context *rsc) {
    901     //ALOGE("%p rsContextDestroy", rsc);
    902     rsContextDestroyWorker(rsc);
    903     delete rsc;
    904     //ALOGV("%p rsContextDestroy done", rsc);
    905 }
    906 
    907 RsMessageToClientType rsi_ContextPeekMessage(Context *rsc,
    908                                            size_t * receiveLen, size_t receiveLen_length,
    909                                            uint32_t * subID, size_t subID_length) {
    910     return rsc->peekMessageToClient(receiveLen, subID);
    911 }
    912 
    913 RsMessageToClientType rsi_ContextGetMessage(Context *rsc, void * data, size_t data_length,
    914                                           size_t * receiveLen, size_t receiveLen_length,
    915                                           uint32_t * subID, size_t subID_length) {
    916     rsAssert(subID_length == sizeof(uint32_t));
    917     rsAssert(receiveLen_length == sizeof(size_t));
    918     return rsc->getMessageToClient(data, receiveLen, subID, data_length);
    919 }
    920 
    921 void rsi_ContextInitToClient(Context *rsc) {
    922     rsc->initToClient();
    923 }
    924 
    925 void rsi_ContextDeinitToClient(Context *rsc) {
    926     rsc->deinitToClient();
    927 }
    928 
    929 void rsi_ContextSendMessage(Context *rsc, uint32_t id, const uint8_t *data, size_t len) {
    930     rsc->sendMessageToClient(data, RS_MESSAGE_TO_CLIENT_USER, id, len, true);
    931 }
    932 
    933 // implementation of handcode LF_ObjDestroy
    934 // required so nObjDestroy can be run from finalizer without blocking
    935 void LF_ObjDestroy_handcode(const Context *rsc, RsAsyncVoidPtr objPtr) {
    936     if (((Context *)rsc)->isSynchronous()) {
    937         rsi_ObjDestroy((Context *)rsc, objPtr);
    938         return;
    939     }
    940 
    941     // struct has two parts:
    942     // RsPlaybackRemoteHeader (cmdID and bytes)
    943     // RS_CMD_ObjDestroy (ptr)
    944     struct destroyCmd {
    945         uint32_t cmdID;
    946         uint32_t bytes;
    947         RsAsyncVoidPtr ptr;
    948      };
    949 
    950     destroyCmd cmd;
    951     cmd.cmdID = RS_CMD_ID_ObjDestroy;
    952     cmd.bytes = sizeof(RsAsyncVoidPtr);
    953     cmd.ptr = objPtr;
    954     ThreadIO *io = &((Context *)rsc)->mIO;
    955     io->coreWrite((void*)&cmd, sizeof(destroyCmd));
    956 
    957 }
    958 
    959 }
    960 }
    961 
    962 extern "C" RsContext rsContextCreate(RsDevice vdev, uint32_t version, uint32_t sdkVersion,
    963                                      RsContextType ct, uint32_t flags) {
    964     //ALOGV("rsContextCreate dev=%p", vdev);
    965     Device * dev = static_cast<Device *>(vdev);
    966     Context *rsc = Context::createContext(dev, NULL, ct, flags);
    967     if (rsc) {
    968         rsc->setTargetSdkVersion(sdkVersion);
    969     }
    970     return rsc;
    971 }
    972 
    973 #ifndef RS_COMPATIBILITY_LIB
    974 RsContext rsContextCreateGL(RsDevice vdev, uint32_t version,
    975                             uint32_t sdkVersion, RsSurfaceConfig sc,
    976                             uint32_t dpi) {
    977     //ALOGV("rsContextCreateGL dev=%p", vdev);
    978     Device * dev = static_cast<Device *>(vdev);
    979     Context *rsc = Context::createContext(dev, &sc);
    980     if (rsc) {
    981         rsc->setTargetSdkVersion(sdkVersion);
    982         rsc->setDPI(dpi);
    983     }
    984     //ALOGV("%p rsContextCreateGL ret", rsc);
    985     return rsc;
    986 }
    987 #endif
    988 
    989 // Only to be called at a3d load time, before object is visible to user
    990 // not thread safe
    991 void rsaGetName(RsContext con, void * obj, const char **name) {
    992     ObjectBase *ob = static_cast<ObjectBase *>(obj);
    993     (*name) = ob->getName();
    994 }
    995 
    996