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      1 /*
      2  * Copyright (C) 2009 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 
     18 #include "rsContext.h"
     19 
     20 namespace android {
     21 namespace renderscript {
     22 
     23 Element::Element(Context *rsc) : ObjectBase(rsc) {
     24     mBits = 0;
     25     mBitsUnpadded = 0;
     26     mFields = nullptr;
     27     mFieldCount = 0;
     28     mHasReference = false;
     29     memset(&mHal, 0, sizeof(mHal));
     30 }
     31 
     32 Element::~Element() {
     33     clear();
     34 }
     35 
     36 void Element::operator delete(void* ptr) {
     37     if (ptr) {
     38         Element *e = (Element*) ptr;
     39         e->getContext()->mHal.funcs.freeRuntimeMem(ptr);
     40     }
     41 }
     42 
     43 void Element::preDestroy() const {
     44     auto& elements = mRSC->mStateElement.mElements;
     45     for (uint32_t ct = 0; ct < elements.size(); ct++) {
     46         if (elements[ct] == this) {
     47             elements.erase(elements.begin() + ct);
     48             break;
     49         }
     50     }
     51 }
     52 
     53 void Element::clear() {
     54     if (mFields) {
     55         for (size_t i = 0; i < mFieldCount; i++) {
     56             delete[] mFields[i].name;
     57         }
     58         delete [] mFields;
     59     }
     60     mFields = nullptr;
     61     mFieldCount = 0;
     62     mHasReference = false;
     63 
     64     delete [] mHal.state.fields;
     65     delete [] mHal.state.fieldArraySizes;
     66     delete [] mHal.state.fieldNames;
     67     delete [] mHal.state.fieldNameLengths;
     68     delete [] mHal.state.fieldOffsetBytes;
     69 }
     70 
     71 size_t Element::getSizeBits() const {
     72     if (!mFieldCount) {
     73         return mBits;
     74     }
     75 
     76     size_t total = 0;
     77     for (size_t ct=0; ct < mFieldCount; ct++) {
     78         total += mFields[ct].e->mBits * mFields[ct].arraySize;
     79     }
     80     return total;
     81 }
     82 
     83 size_t Element::getSizeBitsUnpadded() const {
     84     if (!mFieldCount) {
     85         return mBitsUnpadded;
     86     }
     87 
     88     size_t total = 0;
     89     for (size_t ct=0; ct < mFieldCount; ct++) {
     90         total += mFields[ct].e->mBitsUnpadded * mFields[ct].arraySize;
     91     }
     92     return total;
     93 }
     94 
     95 void Element::dumpLOGV(const char *prefix) const {
     96     ObjectBase::dumpLOGV(prefix);
     97     ALOGV("%s Element: fieldCount: %zu,  size bytes: %zu", prefix, mFieldCount, getSizeBytes());
     98     mComponent.dumpLOGV(prefix);
     99     for (uint32_t ct = 0; ct < mFieldCount; ct++) {
    100         ALOGV("%s Element field index: %u ------------------", prefix, ct);
    101         ALOGV("%s name: %s, offsetBits: %u, arraySize: %u",
    102              prefix, mFields[ct].name, mFields[ct].offsetBits, mFields[ct].arraySize);
    103         mFields[ct].e->dumpLOGV(prefix);
    104     }
    105 }
    106 
    107 void Element::serialize(Context *rsc, OStream *stream) const {
    108     // Need to identify ourselves
    109     stream->addU32((uint32_t)getClassId());
    110     stream->addString(getName());
    111 
    112     mComponent.serialize(stream);
    113 
    114     // Now serialize all the fields
    115     stream->addU32(mFieldCount);
    116     for (uint32_t ct = 0; ct < mFieldCount; ct++) {
    117         stream->addString(mFields[ct].name);
    118         stream->addU32(mFields[ct].arraySize);
    119         mFields[ct].e->serialize(rsc, stream);
    120     }
    121 }
    122 
    123 Element *Element::createFromStream(Context *rsc, IStream *stream) {
    124     // First make sure we are reading the correct object
    125     RsA3DClassID classID = (RsA3DClassID)stream->loadU32();
    126     if (classID != RS_A3D_CLASS_ID_ELEMENT) {
    127         ALOGE("element loading skipped due to invalid class id\n");
    128         return nullptr;
    129     }
    130 
    131     const char *name = stream->loadString();
    132 
    133     Component component;
    134     component.loadFromStream(stream);
    135 
    136     uint32_t fieldCount = stream->loadU32();
    137     if (!fieldCount) {
    138         return (Element *)Element::create(rsc,
    139                                           component.getType(),
    140                                           component.getKind(),
    141                                           component.getIsNormalized(),
    142                                           component.getVectorSize());
    143     }
    144 
    145     const Element **subElems = new const Element *[fieldCount];
    146     const char **subElemNames = new const char *[fieldCount];
    147     size_t *subElemNamesLengths = new size_t[fieldCount];
    148     uint32_t *arraySizes = new uint32_t[fieldCount];
    149 
    150     for (uint32_t ct = 0; ct < fieldCount; ct ++) {
    151         subElemNames[ct] = stream->loadString();
    152         subElemNamesLengths[ct] = strlen(subElemNames[ct]);
    153         arraySizes[ct] = stream->loadU32();
    154         subElems[ct] = Element::createFromStream(rsc, stream);
    155     }
    156 
    157     const Element *elem = Element::create(rsc, fieldCount, subElems, subElemNames,
    158                                           subElemNamesLengths, arraySizes);
    159     for (uint32_t ct = 0; ct < fieldCount; ct ++) {
    160         delete [] subElemNames[ct];
    161         subElems[ct]->decUserRef();
    162     }
    163     delete[] name;
    164     delete[] subElems;
    165     delete[] subElemNames;
    166     delete[] subElemNamesLengths;
    167     delete[] arraySizes;
    168 
    169     return (Element *)elem;
    170 }
    171 
    172 void Element::compute() {
    173     mHal.state.dataType = mComponent.getType();
    174     mHal.state.dataKind = mComponent.getKind();
    175     mHal.state.vectorSize = mComponent.getVectorSize();
    176 
    177     if (mFieldCount == 0) {
    178         mBits = mComponent.getBits();
    179         mBitsUnpadded = mComponent.getBitsUnpadded();
    180         mHasReference = mComponent.isReference();
    181 
    182         mHal.state.elementSizeBytes = getSizeBytes();
    183         return;
    184     }
    185 
    186     uint32_t noPaddingFieldCount = 0;
    187     for (uint32_t ct = 0; ct < mFieldCount; ct ++) {
    188         if (mFields[ct].name[0] != '#') {
    189             noPaddingFieldCount ++;
    190         }
    191     }
    192 
    193     mHal.state.fields = new const Element*[noPaddingFieldCount];
    194     mHal.state.fieldArraySizes = new uint32_t[noPaddingFieldCount];
    195     mHal.state.fieldNames = new const char*[noPaddingFieldCount];
    196     mHal.state.fieldNameLengths = new uint32_t[noPaddingFieldCount];
    197     mHal.state.fieldOffsetBytes = new uint32_t[noPaddingFieldCount];
    198     mHal.state.fieldsCount = noPaddingFieldCount;
    199 
    200     size_t bits = 0;
    201     size_t bitsUnpadded = 0;
    202     for (size_t ct = 0, ctNoPadding = 0; ct < mFieldCount; ct++) {
    203         mFields[ct].offsetBits = bits;
    204         mFields[ct].offsetBitsUnpadded = bitsUnpadded;
    205         bits += mFields[ct].e->getSizeBits() * mFields[ct].arraySize;
    206         bitsUnpadded += mFields[ct].e->getSizeBitsUnpadded() * mFields[ct].arraySize;
    207 
    208         if (mFields[ct].e->mHasReference) {
    209             mHasReference = true;
    210         }
    211 
    212         if (mFields[ct].name[0] == '#') {
    213             continue;
    214         }
    215 
    216         mHal.state.fields[ctNoPadding] = mFields[ct].e.get();
    217         mHal.state.fieldArraySizes[ctNoPadding] = mFields[ct].arraySize;
    218         mHal.state.fieldNames[ctNoPadding] = mFields[ct].name;
    219         mHal.state.fieldNameLengths[ctNoPadding] = strlen(mFields[ct].name) + 1; // to include 0
    220         mHal.state.fieldOffsetBytes[ctNoPadding] = mFields[ct].offsetBits >> 3;
    221 
    222         ctNoPadding ++;
    223     }
    224 
    225     mBits = bits;
    226     mBitsUnpadded = bitsUnpadded;
    227     mHal.state.elementSizeBytes = getSizeBytes();
    228 }
    229 
    230 ObjectBaseRef<const Element> Element::createRef(Context *rsc, RsDataType dt, RsDataKind dk,
    231                                 bool isNorm, uint32_t vecSize) {
    232     ObjectBaseRef<const Element> returnRef;
    233     // Look for an existing match.
    234     ObjectBase::asyncLock();
    235     for (uint32_t ct=0; ct < rsc->mStateElement.mElements.size(); ct++) {
    236         const Element *ee = rsc->mStateElement.mElements[ct];
    237         if (!ee->getFieldCount() &&
    238             (ee->getComponent().getType() == dt) &&
    239             (ee->getComponent().getKind() == dk) &&
    240             (ee->getComponent().getIsNormalized() == isNorm) &&
    241             (ee->getComponent().getVectorSize() == vecSize)) {
    242             // Match
    243             returnRef.set(ee);
    244             ObjectBase::asyncUnlock();
    245             return ee;
    246         }
    247     }
    248     ObjectBase::asyncUnlock();
    249 
    250     // Element objects must use allocator specified by the driver
    251     void* allocMem = rsc->mHal.funcs.allocRuntimeMem(sizeof(Element), 0);
    252     if (!allocMem) {
    253         rsc->setError(RS_ERROR_FATAL_DRIVER, "Couldn't allocate memory for Element");
    254         return nullptr;
    255     }
    256 
    257     Element *e = new (allocMem) Element(rsc);
    258     returnRef.set(e);
    259     e->mComponent.set(dt, dk, isNorm, vecSize);
    260     e->compute();
    261 
    262 #ifdef RS_FIND_OFFSETS
    263     ALOGE("pointer for element: %p", e);
    264     ALOGE("pointer for element.drv: %p", &e->mHal.drv);
    265 #endif
    266 
    267 
    268     ObjectBase::asyncLock();
    269     rsc->mStateElement.mElements.push_back(e);
    270     ObjectBase::asyncUnlock();
    271 
    272     return returnRef;
    273 }
    274 
    275 ObjectBaseRef<const Element> Element::createRef(Context *rsc, size_t count, const Element **ein,
    276                             const char **nin, const size_t * lengths, const uint32_t *asin) {
    277 
    278     ObjectBaseRef<const Element> returnRef;
    279     // Look for an existing match.
    280     ObjectBase::asyncLock();
    281     for (uint32_t ct=0; ct < rsc->mStateElement.mElements.size(); ct++) {
    282         const Element *ee = rsc->mStateElement.mElements[ct];
    283         if (ee->getFieldCount() == count) {
    284             bool match = true;
    285             for (uint32_t i=0; i < count; i++) {
    286                 size_t len;
    287                 uint32_t asize = 1;
    288                 if (lengths) {
    289                     len = lengths[i];
    290                 } else {
    291                     len = strlen(nin[i]);
    292                 }
    293                 if (asin) {
    294                     asize = asin[i];
    295                 }
    296 
    297                 if ((ee->mFields[i].e.get() != ein[i]) ||
    298                     (strlen(ee->mFields[i].name) != len) ||
    299                     strcmp(ee->mFields[i].name, nin[i]) ||
    300                     (ee->mFields[i].arraySize != asize)) {
    301                     match = false;
    302                     break;
    303                 }
    304             }
    305             if (match) {
    306                 returnRef.set(ee);
    307                 ObjectBase::asyncUnlock();
    308                 return returnRef;
    309             }
    310         }
    311     }
    312     ObjectBase::asyncUnlock();
    313 
    314     // Element objects must use allocator specified by the driver
    315     void* allocMem = rsc->mHal.funcs.allocRuntimeMem(sizeof(Element), 0);
    316     if (!allocMem) {
    317         rsc->setError(RS_ERROR_FATAL_DRIVER, "Couldn't allocate memory for Element");
    318         return nullptr;
    319     }
    320 
    321     Element *e = new (allocMem) Element(rsc);
    322     returnRef.set(e);
    323     e->mFields = new ElementField_t [count];
    324     e->mFieldCount = count;
    325     for (size_t ct=0; ct < count; ct++) {
    326         size_t len;
    327         uint32_t asize = 1;
    328         if (lengths) {
    329             len = lengths[ct];
    330         } else {
    331             len = strlen(nin[ct]);
    332         }
    333         if (asin) {
    334             asize = asin[ct];
    335         }
    336 
    337         e->mFields[ct].e.set(ein[ct]);
    338         e->mFields[ct].name = rsuCopyString(nin[ct], len);
    339         e->mFields[ct].arraySize = asize;
    340     }
    341     e->compute();
    342 
    343     ObjectBase::asyncLock();
    344     rsc->mStateElement.mElements.push_back(e);
    345     ObjectBase::asyncUnlock();
    346 
    347     return returnRef;
    348 }
    349 
    350 void Element::incRefs(const void *ptr) const {
    351     if (!mFieldCount) {
    352         if (mComponent.isReference()) {
    353             ObjectBase *const*obp = static_cast<ObjectBase *const*>(ptr);
    354             ObjectBase *ob = obp[0];
    355             if (ob) ob->incSysRef();
    356         }
    357         return;
    358     }
    359 
    360     const uint8_t *p = static_cast<const uint8_t *>(ptr);
    361     for (uint32_t i=0; i < mFieldCount; i++) {
    362         if (mFields[i].e->mHasReference) {
    363             const uint8_t *p2 = &p[mFields[i].offsetBits >> 3];
    364             for (uint32_t ct=0; ct < mFields[i].arraySize; ct++) {
    365                 mFields[i].e->incRefs(p2);
    366                 p2 += mFields[i].e->getSizeBytes();
    367             }
    368         }
    369     }
    370 }
    371 
    372 void Element::decRefs(const void *ptr) const {
    373     if (!mFieldCount) {
    374         if (mComponent.isReference()) {
    375             ObjectBase *const*obp = static_cast<ObjectBase *const*>(ptr);
    376             ObjectBase *ob = obp[0];
    377             if (ob) ob->decSysRef();
    378         }
    379         return;
    380     }
    381 
    382     const uint8_t *p = static_cast<const uint8_t *>(ptr);
    383     for (uint32_t i=0; i < mFieldCount; i++) {
    384         if (mFields[i].e->mHasReference) {
    385             const uint8_t *p2 = &p[mFields[i].offsetBits >> 3];
    386             for (uint32_t ct=0; ct < mFields[i].arraySize; ct++) {
    387                 mFields[i].e->decRefs(p2);
    388                 p2 += mFields[i].e->getSizeBytes();
    389             }
    390         }
    391     }
    392 }
    393 
    394 void Element::callUpdateCacheObject(const Context *rsc, void *dstObj) const {
    395     if (rsc->mHal.funcs.element.updateCachedObject != nullptr) {
    396         rsc->mHal.funcs.element.updateCachedObject(rsc, this, (rs_element *)dstObj);
    397     } else {
    398         *((const void **)dstObj) = this;
    399     }
    400 }
    401 
    402 ElementState::ElementState() {
    403 }
    404 
    405 ElementState::~ElementState() {
    406     rsAssert(!mElements.size());
    407 }
    408 
    409 /////////////////////////////////////////
    410 //
    411 
    412 RsElement rsi_ElementCreate(Context *rsc,
    413                             RsDataType dt,
    414                             RsDataKind dk,
    415                             bool norm,
    416                             uint32_t vecSize) {
    417     return (RsElement)Element::create(rsc, dt, dk, norm, vecSize);
    418 }
    419 
    420 
    421 RsElement rsi_ElementCreate2(Context *rsc,
    422                              const RsElement * ein,
    423                              size_t ein_length,
    424 
    425                              const char ** names,
    426                              size_t nameLengths_length,
    427                              const size_t * nameLengths,
    428 
    429                              const uint32_t * arraySizes,
    430                              size_t arraySizes_length) {
    431     return (RsElement)Element::create(rsc, ein_length, (const Element **)ein,
    432                                       names, nameLengths, arraySizes);
    433 }
    434 
    435 } // namespace renderscript
    436 } // namespace android
    437