rsFileA3D.cpp revision c8fb69e4a3e01501a3d38a6d3ea185e583d3f493 
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#ifndef ANDROID_RS_BUILD_FOR_HOST
19#include "rsContext.h"
20#else
21#include "rsContextHostStub.h"
22#endif
23
24#include "rsFileA3D.h"
25
26#include "rsMesh.h"
27#include "rsAnimation.h"
28
29
30using namespace android;
31using namespace android::renderscript;
32
33FileA3D::FileA3D(Context *rsc) : ObjectBase(rsc)
34{
35    mAlloc = NULL;
36    mData = NULL;
37    mWriteStream = NULL;
38    mReadStream = NULL;
39
40    mMajorVersion = 0;
41    mMinorVersion = 1;
42    mDataSize = 0;
43}
44
45FileA3D::~FileA3D()
46{
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}
63
64void FileA3D::parseHeader(IStream *headerStream)
65{
66    mMajorVersion = headerStream->loadU32();
67    mMinorVersion = headerStream->loadU32();
68    uint32_t flags = headerStream->loadU32();
69    mUse64BitOffsets = (flags & 1) != 0;
70
71    uint32_t numIndexEntries = headerStream->loadU32();
72    for(uint32_t i = 0; i < numIndexEntries; i ++) {
73        A3DIndexEntry *entry = new A3DIndexEntry();
74        headerStream->loadString(&entry->mObjectName);
75        LOGV("Header data, entry name = %s", entry->mObjectName.string());
76        entry->mType = (RsA3DClassID)headerStream->loadU32();
77        if(mUse64BitOffsets){
78            entry->mOffset = headerStream->loadOffset();
79            entry->mLength = headerStream->loadOffset();
80        }
81        else {
82            entry->mOffset = headerStream->loadU32();
83            entry->mLength = headerStream->loadU32();
84        }
85        entry->mRsObj = NULL;
86        mIndex.push(entry);
87    }
88}
89
90bool FileA3D::load(const void *data, size_t length)
91{
92    const uint8_t *localData = (const uint8_t *)data;
93
94    size_t lengthRemaining = length;
95    size_t magicStrLen = 12;
96    if ((length < magicStrLen) ||
97        memcmp(data, "Android3D_ff", magicStrLen)) {
98        return false;
99    }
100
101    localData += magicStrLen;
102    lengthRemaining -= magicStrLen;
103
104    // Next we get our header size
105    uint64_t headerSize = 0;
106    if(lengthRemaining < sizeof(headerSize)) {
107        return false;
108    }
109
110    memcpy(&headerSize, localData, sizeof(headerSize));
111    localData += sizeof(headerSize);
112    lengthRemaining -= sizeof(headerSize);
113
114    if(lengthRemaining < headerSize) {
115        return false;
116    }
117
118    uint8_t *headerData = (uint8_t *)malloc(headerSize);
119    if(!headerData) {
120        return false;
121    }
122
123    memcpy(headerData, localData, headerSize);
124
125    // Now open the stream to parse the header
126    IStream headerStream(headerData, false);
127    parseHeader(&headerStream);
128
129    free(headerData);
130
131    localData += headerSize;
132    lengthRemaining -= headerSize;
133
134    if(lengthRemaining < sizeof(mDataSize)) {
135        return false;
136    }
137
138    // Read the size of the data
139    memcpy(&mDataSize, localData, sizeof(mDataSize));
140    localData += sizeof(mDataSize);
141    lengthRemaining -= sizeof(mDataSize);
142
143    if(lengthRemaining < mDataSize) {
144        return false;
145    }
146
147    // We should know enough to read the file in at this point.
148    mAlloc = malloc(mDataSize);
149    if (!mAlloc) {
150        return false;
151    }
152    mData = (uint8_t *)mAlloc;
153    memcpy(mAlloc, localData, mDataSize);
154
155    mReadStream = new IStream(mData, mUse64BitOffsets);
156
157    return true;
158}
159
160bool FileA3D::load(FILE *f)
161{
162    char magicString[12];
163    size_t len;
164
165    LOGV("file open 1");
166    len = fread(magicString, 1, 12, f);
167    if ((len != 12) ||
168        memcmp(magicString, "Android3D_ff", 12)) {
169        return false;
170    }
171
172    // Next thing is the size of the header
173    uint64_t headerSize = 0;
174    len = fread(&headerSize, 1, sizeof(headerSize), f);
175    if (len != sizeof(headerSize) || headerSize == 0) {
176        return false;
177    }
178
179    uint8_t *headerData = (uint8_t *)malloc(headerSize);
180    if(!headerData) {
181        return false;
182    }
183
184    len = fread(headerData, 1, headerSize, f);
185    if (len != headerSize) {
186        return false;
187    }
188
189    // Now open the stream to parse the header
190    IStream headerStream(headerData, false);
191    parseHeader(&headerStream);
192
193    free(headerData);
194
195    // Next thing is the size of the header
196    len = fread(&mDataSize, 1, sizeof(mDataSize), f);
197    if (len != sizeof(mDataSize) || mDataSize == 0) {
198        return false;
199    }
200
201    LOGV("file open size = %lli", mDataSize);
202
203    // We should know enough to read the file in at this point.
204    mAlloc = malloc(mDataSize);
205    if (!mAlloc) {
206        return false;
207    }
208    mData = (uint8_t *)mAlloc;
209    len = fread(mAlloc, 1, mDataSize, f);
210    if (len != mDataSize) {
211        return false;
212    }
213
214    mReadStream = new IStream(mData, mUse64BitOffsets);
215
216    LOGV("Header is read an stream initialized");
217    return true;
218}
219
220size_t FileA3D::getNumIndexEntries() const {
221    return mIndex.size();
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            return NULL;
289    }
290    if(entry->mRsObj) {
291        entry->mRsObj->incUserRef();
292    }
293    return entry->mRsObj;
294}
295
296bool FileA3D::writeFile(const char *filename)
297{
298    if(!mWriteStream) {
299        LOGE("No objects to write\n");
300        return false;
301    }
302    if(mWriteStream->getPos() == 0) {
303        LOGE("No objects to write\n");
304        return false;
305    }
306
307    FILE *writeHandle = fopen(filename, "wb");
308    if(!writeHandle) {
309        LOGE("Couldn't open the file for writing\n");
310        return false;
311    }
312
313    // Open a new stream to make writing the header easier
314    OStream headerStream(5*1024, false);
315    headerStream.addU32(mMajorVersion);
316    headerStream.addU32(mMinorVersion);
317    uint32_t is64Bit = 0;
318    headerStream.addU32(is64Bit);
319
320    uint32_t writeIndexSize = mWriteIndex.size();
321    headerStream.addU32(writeIndexSize);
322    for(uint32_t i = 0; i < writeIndexSize; i ++) {
323        headerStream.addString(&mWriteIndex[i]->mObjectName);
324        headerStream.addU32((uint32_t)mWriteIndex[i]->mType);
325        if(mUse64BitOffsets){
326            headerStream.addOffset(mWriteIndex[i]->mOffset);
327            headerStream.addOffset(mWriteIndex[i]->mLength);
328        }
329        else {
330            uint32_t offset = (uint32_t)mWriteIndex[i]->mOffset;
331            headerStream.addU32(offset);
332            offset = (uint32_t)mWriteIndex[i]->mLength;
333            headerStream.addU32(offset);
334        }
335    }
336
337    // Write our magic string so we know we are reading the right file
338    String8 magicString(A3D_MAGIC_KEY);
339    fwrite(magicString.string(), sizeof(char), magicString.size(), writeHandle);
340
341    // Store the size of the header to make it easier to parse when we read it
342    uint64_t headerSize = headerStream.getPos();
343    fwrite(&headerSize, sizeof(headerSize), 1, writeHandle);
344
345    // Now write our header
346    fwrite(headerStream.getPtr(), sizeof(uint8_t), headerStream.getPos(), writeHandle);
347
348    // Now write the size of the data part of the file for easier parsing later
349    uint64_t fileDataSize = mWriteStream->getPos();
350    fwrite(&fileDataSize, sizeof(fileDataSize), 1, writeHandle);
351
352    fwrite(mWriteStream->getPtr(), sizeof(uint8_t), mWriteStream->getPos(), writeHandle);
353
354    int status = fclose(writeHandle);
355
356    if(status != 0) {
357        LOGE("Couldn't close file\n");
358        return false;
359    }
360
361    return true;
362}
363
364void FileA3D::appendToFile(ObjectBase *obj) {
365    if(!obj) {
366        return;
367    }
368    if(!mWriteStream) {
369        const uint64_t initialStreamSize = 256*1024;
370        mWriteStream = new OStream(initialStreamSize, false);
371    }
372    A3DIndexEntry *indexEntry = new A3DIndexEntry();
373    indexEntry->mObjectName.setTo(obj->getName());
374    indexEntry->mType = obj->getClassId();
375    indexEntry->mOffset = mWriteStream->getPos();
376    indexEntry->mRsObj = obj;
377    mWriteIndex.push(indexEntry);
378    obj->serialize(mWriteStream);
379    indexEntry->mLength = mWriteStream->getPos() - indexEntry->mOffset;
380    mWriteStream->align(4);
381}
382
383namespace android {
384namespace renderscript {
385
386void rsi_FileA3DGetNumIndexEntries(Context *rsc, int32_t *numEntries, RsFile file)
387{
388    FileA3D *fa3d = static_cast<FileA3D *>(file);
389
390    if(fa3d) {
391        *numEntries = fa3d->getNumIndexEntries();
392    }
393    else {
394        *numEntries = 0;
395    }
396}
397
398void rsi_FileA3DGetIndexEntries(Context *rsc, RsFileIndexEntry *fileEntries, uint32_t numEntries, RsFile file)
399{
400    FileA3D *fa3d = static_cast<FileA3D *>(file);
401
402    if(!fa3d) {
403        LOGE("Can't load index entries. No valid file");
404        return;
405    }
406
407    uint32_t numFileEntries = fa3d->getNumIndexEntries();
408    if(numFileEntries != numEntries || numEntries == 0 || fileEntries == NULL) {
409        LOGE("Can't load index entries. Invalid number requested");
410        return;
411    }
412
413    for(uint32_t i = 0; i < numFileEntries; i ++) {
414        const FileA3D::A3DIndexEntry *entry = fa3d->getIndexEntry(i);
415        fileEntries[i].classID = entry->getType();
416        fileEntries[i].objectName = entry->getObjectName().string();
417    }
418
419}
420
421RsObjectBase rsi_FileA3DGetEntryByIndex(Context *rsc, uint32_t index, RsFile file)
422{
423    FileA3D *fa3d = static_cast<FileA3D *>(file);
424    if(!fa3d) {
425        LOGE("Can't load entry. No valid file");
426        return NULL;
427    }
428
429    ObjectBase *obj = fa3d->initializeFromEntry(index);
430    LOGV("Returning object with name %s", obj->getName());
431
432    return obj;
433}
434
435RsFile rsi_FileA3DCreateFromAssetStream(Context *rsc, const void *data, uint32_t len)
436{
437    if (data == NULL) {
438        LOGE("File load failed. Asset stream is NULL");
439        return NULL;
440    }
441
442    FileA3D *fa3d = new FileA3D(rsc);
443
444    fa3d->load(data, len);
445    fa3d->incUserRef();
446
447    return fa3d;
448}
449
450
451RsFile rsi_FileOpen(Context *rsc, char const *path, unsigned int len)
452{
453    FileA3D *fa3d = new FileA3D(rsc);
454
455    FILE *f = fopen("/sdcard/test.a3d", "rb");
456    if (f) {
457        fa3d->load(f);
458        fclose(f);
459        fa3d->incUserRef();
460        return fa3d;
461    }
462    delete fa3d;
463    return NULL;
464}
465
466
467}
468}
469