rsFileA3D.cpp revision 93d6bc872b7d9fba63abfa7513d56b38d9c3d371 
1
2/*
3 * Copyright (C) 2009 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 *      http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18#include "rsContext.h"
19#include "rsFileA3D.h"
20
21#include "rsMesh.h"
22#include "rsAnimation.h"
23#include "rs.h"
24
25#if !defined(__RS_PDK__)
26    #include <androidfw/Asset.h>
27#endif
28
29#include <inttypes.h>
30
31using namespace android;
32using namespace android::renderscript;
33
34FileA3D::FileA3D(Context *rsc) : ObjectBase(rsc) {
35    mAlloc = NULL;
36    mData = NULL;
37    mWriteStream = NULL;
38    mReadStream = NULL;
39    mAsset = NULL;
40
41    mMajorVersion = 0;
42    mMinorVersion = 1;
43    mDataSize = 0;
44}
45
46FileA3D::~FileA3D() {
47    for (size_t i = 0; i < mIndex.size(); i ++) {
48        delete mIndex[i];
49    }
50    for (size_t i = 0; i < mWriteIndex.size(); i ++) {
51        delete mWriteIndex[i];
52    }
53    if (mWriteStream) {
54        delete mWriteStream;
55    }
56    if (mReadStream) {
57        delete mWriteStream;
58    }
59    if (mAlloc) {
60        free(mAlloc);
61    }
62    if (mAsset) {
63#if !defined(__RS_PDK__)
64        delete mAsset;
65#endif
66    }
67}
68
69void FileA3D::parseHeader(IStream *headerStream) {
70    mMajorVersion = headerStream->loadU32();
71    mMinorVersion = headerStream->loadU32();
72    uint32_t flags = headerStream->loadU32();
73    mUse64BitOffsets = (flags & 1) != 0;
74
75    uint32_t numIndexEntries = headerStream->loadU32();
76    for (uint32_t i = 0; i < numIndexEntries; i ++) {
77        A3DIndexEntry *entry = new A3DIndexEntry();
78        entry->mObjectName = headerStream->loadString();
79
80        //ALOGV("Header data, entry name = %s", entry->mObjectName.string());
81        entry->mType = (RsA3DClassID)headerStream->loadU32();
82        if (mUse64BitOffsets){
83            entry->mOffset = headerStream->loadOffset();
84            entry->mLength = headerStream->loadOffset();
85        } else {
86            entry->mOffset = headerStream->loadU32();
87            entry->mLength = headerStream->loadU32();
88        }
89        entry->mRsObj = NULL;
90        mIndex.push_back(entry);
91    }
92}
93
94bool FileA3D::load(Asset *asset) {
95#if !defined(__RS_PDK__)
96    mAsset = asset;
97    return load(asset->getBuffer(false), asset->getLength());
98#else
99    return false;
100#endif
101}
102
103bool FileA3D::load(const void *data, size_t length) {
104    const uint8_t *localData = (const uint8_t *)data;
105
106    size_t lengthRemaining = length;
107    size_t magicStrLen = 12;
108    if ((length < magicStrLen) ||
109        memcmp(data, "Android3D_ff", magicStrLen)) {
110        return false;
111    }
112
113    localData += magicStrLen;
114    lengthRemaining -= magicStrLen;
115
116    // Next we get our header size
117    uint64_t headerSize = 0;
118    if (lengthRemaining < sizeof(headerSize)) {
119        return false;
120    }
121
122    memcpy(&headerSize, localData, sizeof(headerSize));
123    localData += sizeof(headerSize);
124    lengthRemaining -= sizeof(headerSize);
125
126    if (lengthRemaining < headerSize) {
127        return false;
128    }
129
130    // Now open the stream to parse the header
131    IStream headerStream(localData, false);
132    parseHeader(&headerStream);
133
134    localData += headerSize;
135    lengthRemaining -= headerSize;
136
137    if (lengthRemaining < sizeof(mDataSize)) {
138        return false;
139    }
140
141    // Read the size of the data
142    memcpy(&mDataSize, localData, sizeof(mDataSize));
143    localData += sizeof(mDataSize);
144    lengthRemaining -= sizeof(mDataSize);
145
146    if (lengthRemaining < mDataSize) {
147        return false;
148    }
149
150    // We should know enough to read the file in at this point.
151    mData = (uint8_t *)localData;
152    mReadStream = new IStream(mData, mUse64BitOffsets);
153
154    return true;
155}
156
157bool FileA3D::load(FILE *f) {
158    char magicString[12];
159    size_t len;
160
161    ALOGV("file open 1");
162    len = fread(magicString, 1, 12, f);
163    if ((len != 12) ||
164        memcmp(magicString, "Android3D_ff", 12)) {
165        return false;
166    }
167
168    // Next thing is the size of the header
169    uint64_t headerSize = 0;
170    len = fread(&headerSize, 1, sizeof(headerSize), f);
171    if (len != sizeof(headerSize) || headerSize == 0) {
172        return false;
173    }
174
175    uint8_t *headerData = (uint8_t *)malloc(headerSize);
176    if (!headerData) {
177        return false;
178    }
179
180    len = fread(headerData, 1, headerSize, f);
181    if (len != headerSize) {
182        return false;
183    }
184
185    // Now open the stream to parse the header
186    IStream headerStream(headerData, false);
187    parseHeader(&headerStream);
188
189    free(headerData);
190
191    // Next thing is the size of the header
192    len = fread(&mDataSize, 1, sizeof(mDataSize), f);
193    if (len != sizeof(mDataSize) || mDataSize == 0) {
194        return false;
195    }
196
197    ALOGV("file open size = %" PRIi64, mDataSize);
198
199    // We should know enough to read the file in at this point.
200    mAlloc = malloc(mDataSize);
201    if (!mAlloc) {
202        return false;
203    }
204    mData = (uint8_t *)mAlloc;
205    len = fread(mAlloc, 1, mDataSize, f);
206    if (len != mDataSize) {
207        return false;
208    }
209
210    mReadStream = new IStream(mData, mUse64BitOffsets);
211
212    ALOGV("Header is read an stream initialized");
213    return true;
214}
215
216size_t FileA3D::getNumIndexEntries() const {
217    return mIndex.size();
218}
219
220FileA3D::A3DIndexEntry::~A3DIndexEntry() {
221    delete[] mObjectName;
222}
223
224const FileA3D::A3DIndexEntry *FileA3D::getIndexEntry(size_t index) const {
225    if (index < mIndex.size()) {
226        return mIndex[index];
227    }
228    return NULL;
229}
230
231ObjectBase *FileA3D::initializeFromEntry(size_t index) {
232    if (index >= mIndex.size()) {
233        return NULL;
234    }
235
236    FileA3D::A3DIndexEntry *entry = mIndex[index];
237    if (!entry) {
238        return NULL;
239    }
240
241    if (entry->mRsObj) {
242        entry->mRsObj->incUserRef();
243        return entry->mRsObj;
244    }
245
246    // Seek to the beginning of object
247    mReadStream->reset(entry->mOffset);
248    switch (entry->mType) {
249        case RS_A3D_CLASS_ID_UNKNOWN:
250            return NULL;
251        case RS_A3D_CLASS_ID_MESH:
252            entry->mRsObj = Mesh::createFromStream(mRSC, mReadStream);
253            break;
254        case RS_A3D_CLASS_ID_TYPE:
255            entry->mRsObj = Type::createFromStream(mRSC, mReadStream);
256            break;
257        case RS_A3D_CLASS_ID_ELEMENT:
258            entry->mRsObj = Element::createFromStream(mRSC, mReadStream);
259            break;
260        case RS_A3D_CLASS_ID_ALLOCATION:
261            entry->mRsObj = Allocation::createFromStream(mRSC, mReadStream);
262            break;
263        case RS_A3D_CLASS_ID_PROGRAM_VERTEX:
264            //entry->mRsObj = ProgramVertex::createFromStream(mRSC, mReadStream);
265            break;
266        case RS_A3D_CLASS_ID_PROGRAM_RASTER:
267            //entry->mRsObj = ProgramRaster::createFromStream(mRSC, mReadStream);
268            break;
269        case RS_A3D_CLASS_ID_PROGRAM_FRAGMENT:
270            //entry->mRsObj = ProgramFragment::createFromStream(mRSC, mReadStream);
271            break;
272        case RS_A3D_CLASS_ID_PROGRAM_STORE:
273            //entry->mRsObj = ProgramStore::createFromStream(mRSC, mReadStream);
274            break;
275        case RS_A3D_CLASS_ID_SAMPLER:
276            //entry->mRsObj = Sampler::createFromStream(mRSC, mReadStream);
277            break;
278        case RS_A3D_CLASS_ID_ANIMATION:
279            //entry->mRsObj = Animation::createFromStream(mRSC, mReadStream);
280            break;
281        case RS_A3D_CLASS_ID_ADAPTER_1D:
282            //entry->mRsObj = Adapter1D::createFromStream(mRSC, mReadStream);
283            break;
284        case RS_A3D_CLASS_ID_ADAPTER_2D:
285            //entry->mRsObj = Adapter2D::createFromStream(mRSC, mReadStream);
286            break;
287        case RS_A3D_CLASS_ID_SCRIPT_C:
288            break;
289        case RS_A3D_CLASS_ID_SCRIPT_KERNEL_ID:
290            break;
291        case RS_A3D_CLASS_ID_SCRIPT_FIELD_ID:
292            break;
293        case RS_A3D_CLASS_ID_SCRIPT_METHOD_ID:
294            break;
295        case RS_A3D_CLASS_ID_SCRIPT_GROUP:
296            break;
297    }
298    if (entry->mRsObj) {
299        entry->mRsObj->incUserRef();
300    }
301    return entry->mRsObj;
302}
303
304bool FileA3D::writeFile(const char *filename) {
305    if (!mWriteStream) {
306        ALOGE("No objects to write\n");
307        return false;
308    }
309    if (mWriteStream->getPos() == 0) {
310        ALOGE("No objects to write\n");
311        return false;
312    }
313
314    FILE *writeHandle = fopen(filename, "wb");
315    if (!writeHandle) {
316        ALOGE("Couldn't open the file for writing\n");
317        return false;
318    }
319
320    // Open a new stream to make writing the header easier
321    OStream headerStream(5*1024, false);
322    headerStream.addU32(mMajorVersion);
323    headerStream.addU32(mMinorVersion);
324    uint32_t is64Bit = 0;
325    headerStream.addU32(is64Bit);
326
327    uint32_t writeIndexSize = mWriteIndex.size();
328    headerStream.addU32(writeIndexSize);
329    for (uint32_t i = 0; i < writeIndexSize; i ++) {
330        headerStream.addString(mWriteIndex[i]->mObjectName);
331        headerStream.addU32((uint32_t)mWriteIndex[i]->mType);
332        if (mUse64BitOffsets){
333            headerStream.addOffset(mWriteIndex[i]->mOffset);
334            headerStream.addOffset(mWriteIndex[i]->mLength);
335        } else {
336            uint32_t offset = (uint32_t)mWriteIndex[i]->mOffset;
337            headerStream.addU32(offset);
338            offset = (uint32_t)mWriteIndex[i]->mLength;
339            headerStream.addU32(offset);
340        }
341    }
342
343    // Write our magic string so we know we are reading the right file
344    fwrite(A3D_MAGIC_KEY, sizeof(char), strlen(A3D_MAGIC_KEY), writeHandle);
345
346    // Store the size of the header to make it easier to parse when we read it
347    uint64_t headerSize = headerStream.getPos();
348    fwrite(&headerSize, sizeof(headerSize), 1, writeHandle);
349
350    // Now write our header
351    fwrite(headerStream.getPtr(), sizeof(uint8_t), headerStream.getPos(), writeHandle);
352
353    // Now write the size of the data part of the file for easier parsing later
354    uint64_t fileDataSize = mWriteStream->getPos();
355    fwrite(&fileDataSize, sizeof(fileDataSize), 1, writeHandle);
356
357    fwrite(mWriteStream->getPtr(), sizeof(uint8_t), mWriteStream->getPos(), writeHandle);
358
359    int status = fclose(writeHandle);
360
361    if (status != 0) {
362        ALOGE("Couldn't close file\n");
363        return false;
364    }
365
366    return true;
367}
368
369void FileA3D::appendToFile(Context *con, ObjectBase *obj) {
370    if (!obj) {
371        return;
372    }
373    if (!mWriteStream) {
374        const uint64_t initialStreamSize = 256*1024;
375        mWriteStream = new OStream(initialStreamSize, false);
376    }
377    A3DIndexEntry *indexEntry = new A3DIndexEntry();
378    indexEntry->mObjectName = rsuCopyString(obj->getName());
379    indexEntry->mType = obj->getClassId();
380    indexEntry->mOffset = mWriteStream->getPos();
381    indexEntry->mRsObj = obj;
382    mWriteIndex.push_back(indexEntry);
383    obj->serialize(con, mWriteStream);
384    indexEntry->mLength = mWriteStream->getPos() - indexEntry->mOffset;
385    mWriteStream->align(4);
386}
387
388RsObjectBase rsaFileA3DGetEntryByIndex(RsContext con, uint32_t index, RsFile file) {
389    FileA3D *fa3d = static_cast<FileA3D *>(file);
390    if (!fa3d) {
391        ALOGE("Can't load entry. No valid file");
392        return NULL;
393    }
394
395    ObjectBase *obj = fa3d->initializeFromEntry(index);
396    //ALOGV("Returning object with name %s", obj->getName());
397
398    return obj;
399}
400
401
402void rsaFileA3DGetNumIndexEntries(RsContext con, int32_t *numEntries, RsFile file) {
403    FileA3D *fa3d = static_cast<FileA3D *>(file);
404
405    if (fa3d) {
406        *numEntries = fa3d->getNumIndexEntries();
407    } else {
408        *numEntries = 0;
409    }
410}
411
412void rsaFileA3DGetIndexEntries(RsContext con, RsFileIndexEntry *fileEntries, uint32_t numEntries, RsFile file) {
413    FileA3D *fa3d = static_cast<FileA3D *>(file);
414
415    if (!fa3d) {
416        ALOGE("Can't load index entries. No valid file");
417        return;
418    }
419
420    uint32_t numFileEntries = fa3d->getNumIndexEntries();
421    if (numFileEntries != numEntries || numEntries == 0 || fileEntries == NULL) {
422        ALOGE("Can't load index entries. Invalid number requested");
423        return;
424    }
425
426    for (uint32_t i = 0; i < numFileEntries; i ++) {
427        const FileA3D::A3DIndexEntry *entry = fa3d->getIndexEntry(i);
428        fileEntries[i].classID = entry->getType();
429        fileEntries[i].objectName = rsuCopyString(entry->getObjectName());
430    }
431}
432
433RsFile rsaFileA3DCreateFromMemory(RsContext con, const void *data, uint32_t len) {
434    if (data == NULL) {
435        ALOGE("File load failed. Asset stream is NULL");
436        return NULL;
437    }
438
439    Context *rsc = static_cast<Context *>(con);
440    FileA3D *fa3d = new FileA3D(rsc);
441    fa3d->incUserRef();
442
443    fa3d->load(data, len);
444    return fa3d;
445}
446
447RsFile rsaFileA3DCreateFromAsset(RsContext con, void *_asset) {
448#if !defined(__RS_PDK__)
449    Context *rsc = static_cast<Context *>(con);
450    Asset *asset = static_cast<Asset *>(_asset);
451    FileA3D *fa3d = new FileA3D(rsc);
452    fa3d->incUserRef();
453
454    fa3d->load(asset);
455    return fa3d;
456#else
457    return NULL;
458#endif
459}
460
461RsFile rsaFileA3DCreateFromFile(RsContext con, const char *path) {
462    if (path == NULL) {
463        ALOGE("File load failed. Path is NULL");
464        return NULL;
465    }
466
467    Context *rsc = static_cast<Context *>(con);
468    FileA3D *fa3d = NULL;
469
470    FILE *f = fopen(path, "rb");
471    if (f) {
472        fa3d = new FileA3D(rsc);
473        fa3d->incUserRef();
474        fa3d->load(f);
475        fclose(f);
476    } else {
477        ALOGE("Could not open file %s", path);
478    }
479
480    return fa3d;
481}
482