rsFileA3D.cpp revision dc763f345db3e796efc28dc4b4d8edffda5a803e 
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    // Now open the stream to parse the header
119    IStream headerStream(localData, false);
120    parseHeader(&headerStream);
121
122    localData += headerSize;
123    lengthRemaining -= headerSize;
124
125    if(lengthRemaining < sizeof(mDataSize)) {
126        return false;
127    }
128
129    // Read the size of the data
130    memcpy(&mDataSize, localData, sizeof(mDataSize));
131    localData += sizeof(mDataSize);
132    lengthRemaining -= sizeof(mDataSize);
133
134    if(lengthRemaining < mDataSize) {
135        return false;
136    }
137
138    // We should know enough to read the file in at this point.
139    mData = (uint8_t *)localData;
140    mReadStream = new IStream(mData, mUse64BitOffsets);
141
142    return true;
143}
144
145bool FileA3D::load(FILE *f)
146{
147    char magicString[12];
148    size_t len;
149
150    LOGV("file open 1");
151    len = fread(magicString, 1, 12, f);
152    if ((len != 12) ||
153        memcmp(magicString, "Android3D_ff", 12)) {
154        return false;
155    }
156
157    // Next thing is the size of the header
158    uint64_t headerSize = 0;
159    len = fread(&headerSize, 1, sizeof(headerSize), f);
160    if (len != sizeof(headerSize) || headerSize == 0) {
161        return false;
162    }
163
164    uint8_t *headerData = (uint8_t *)malloc(headerSize);
165    if(!headerData) {
166        return false;
167    }
168
169    len = fread(headerData, 1, headerSize, f);
170    if (len != headerSize) {
171        return false;
172    }
173
174    // Now open the stream to parse the header
175    IStream headerStream(headerData, false);
176    parseHeader(&headerStream);
177
178    free(headerData);
179
180    // Next thing is the size of the header
181    len = fread(&mDataSize, 1, sizeof(mDataSize), f);
182    if (len != sizeof(mDataSize) || mDataSize == 0) {
183        return false;
184    }
185
186    LOGV("file open size = %lli", mDataSize);
187
188    // We should know enough to read the file in at this point.
189    mAlloc = malloc(mDataSize);
190    if (!mAlloc) {
191        return false;
192    }
193    mData = (uint8_t *)mAlloc;
194    len = fread(mAlloc, 1, mDataSize, f);
195    if (len != mDataSize) {
196        return false;
197    }
198
199    mReadStream = new IStream(mData, mUse64BitOffsets);
200
201    LOGV("Header is read an stream initialized");
202    return true;
203}
204
205size_t FileA3D::getNumIndexEntries() const {
206    return mIndex.size();
207}
208
209const FileA3D::A3DIndexEntry *FileA3D::getIndexEntry(size_t index) const {
210    if(index < mIndex.size()) {
211        return mIndex[index];
212    }
213    return NULL;
214}
215
216ObjectBase *FileA3D::initializeFromEntry(size_t index) {
217    if(index >= mIndex.size()) {
218        return NULL;
219    }
220
221    FileA3D::A3DIndexEntry *entry = mIndex[index];
222    if(!entry) {
223        return NULL;
224    }
225
226    if(entry->mRsObj) {
227        entry->mRsObj->incUserRef();
228        return entry->mRsObj;
229    }
230
231    // Seek to the beginning of object
232    mReadStream->reset(entry->mOffset);
233    switch (entry->mType) {
234        case RS_A3D_CLASS_ID_UNKNOWN:
235            return NULL;
236        case RS_A3D_CLASS_ID_MESH:
237            entry->mRsObj = Mesh::createFromStream(mRSC, mReadStream);
238            break;
239        case RS_A3D_CLASS_ID_TYPE:
240            entry->mRsObj = Type::createFromStream(mRSC, mReadStream);
241            break;
242        case RS_A3D_CLASS_ID_ELEMENT:
243            entry->mRsObj = Element::createFromStream(mRSC, mReadStream);
244            break;
245        case RS_A3D_CLASS_ID_ALLOCATION:
246            entry->mRsObj = Allocation::createFromStream(mRSC, mReadStream);
247            break;
248        case RS_A3D_CLASS_ID_PROGRAM_VERTEX:
249            entry->mRsObj = ProgramVertex::createFromStream(mRSC, mReadStream);
250            break;
251        case RS_A3D_CLASS_ID_PROGRAM_RASTER:
252            entry->mRsObj = ProgramRaster::createFromStream(mRSC, mReadStream);
253            break;
254        case RS_A3D_CLASS_ID_PROGRAM_FRAGMENT:
255            entry->mRsObj = ProgramFragment::createFromStream(mRSC, mReadStream);
256            break;
257        case RS_A3D_CLASS_ID_PROGRAM_STORE:
258            entry->mRsObj = ProgramStore::createFromStream(mRSC, mReadStream);
259            break;
260        case RS_A3D_CLASS_ID_SAMPLER:
261            entry->mRsObj = Sampler::createFromStream(mRSC, mReadStream);
262            break;
263        case RS_A3D_CLASS_ID_ANIMATION:
264            entry->mRsObj = Animation::createFromStream(mRSC, mReadStream);
265            break;
266        case RS_A3D_CLASS_ID_ADAPTER_1D:
267            entry->mRsObj = Adapter1D::createFromStream(mRSC, mReadStream);
268            break;
269        case RS_A3D_CLASS_ID_ADAPTER_2D:
270            entry->mRsObj = Adapter2D::createFromStream(mRSC, mReadStream);
271            break;
272        case RS_A3D_CLASS_ID_SCRIPT_C:
273            return NULL;
274    }
275    if(entry->mRsObj) {
276        entry->mRsObj->incUserRef();
277    }
278    return entry->mRsObj;
279}
280
281bool FileA3D::writeFile(const char *filename)
282{
283    if(!mWriteStream) {
284        LOGE("No objects to write\n");
285        return false;
286    }
287    if(mWriteStream->getPos() == 0) {
288        LOGE("No objects to write\n");
289        return false;
290    }
291
292    FILE *writeHandle = fopen(filename, "wb");
293    if(!writeHandle) {
294        LOGE("Couldn't open the file for writing\n");
295        return false;
296    }
297
298    // Open a new stream to make writing the header easier
299    OStream headerStream(5*1024, false);
300    headerStream.addU32(mMajorVersion);
301    headerStream.addU32(mMinorVersion);
302    uint32_t is64Bit = 0;
303    headerStream.addU32(is64Bit);
304
305    uint32_t writeIndexSize = mWriteIndex.size();
306    headerStream.addU32(writeIndexSize);
307    for(uint32_t i = 0; i < writeIndexSize; i ++) {
308        headerStream.addString(&mWriteIndex[i]->mObjectName);
309        headerStream.addU32((uint32_t)mWriteIndex[i]->mType);
310        if(mUse64BitOffsets){
311            headerStream.addOffset(mWriteIndex[i]->mOffset);
312            headerStream.addOffset(mWriteIndex[i]->mLength);
313        }
314        else {
315            uint32_t offset = (uint32_t)mWriteIndex[i]->mOffset;
316            headerStream.addU32(offset);
317            offset = (uint32_t)mWriteIndex[i]->mLength;
318            headerStream.addU32(offset);
319        }
320    }
321
322    // Write our magic string so we know we are reading the right file
323    String8 magicString(A3D_MAGIC_KEY);
324    fwrite(magicString.string(), sizeof(char), magicString.size(), writeHandle);
325
326    // Store the size of the header to make it easier to parse when we read it
327    uint64_t headerSize = headerStream.getPos();
328    fwrite(&headerSize, sizeof(headerSize), 1, writeHandle);
329
330    // Now write our header
331    fwrite(headerStream.getPtr(), sizeof(uint8_t), headerStream.getPos(), writeHandle);
332
333    // Now write the size of the data part of the file for easier parsing later
334    uint64_t fileDataSize = mWriteStream->getPos();
335    fwrite(&fileDataSize, sizeof(fileDataSize), 1, writeHandle);
336
337    fwrite(mWriteStream->getPtr(), sizeof(uint8_t), mWriteStream->getPos(), writeHandle);
338
339    int status = fclose(writeHandle);
340
341    if(status != 0) {
342        LOGE("Couldn't close file\n");
343        return false;
344    }
345
346    return true;
347}
348
349void FileA3D::appendToFile(ObjectBase *obj) {
350    if(!obj) {
351        return;
352    }
353    if(!mWriteStream) {
354        const uint64_t initialStreamSize = 256*1024;
355        mWriteStream = new OStream(initialStreamSize, false);
356    }
357    A3DIndexEntry *indexEntry = new A3DIndexEntry();
358    indexEntry->mObjectName.setTo(obj->getName());
359    indexEntry->mType = obj->getClassId();
360    indexEntry->mOffset = mWriteStream->getPos();
361    indexEntry->mRsObj = obj;
362    mWriteIndex.push(indexEntry);
363    obj->serialize(mWriteStream);
364    indexEntry->mLength = mWriteStream->getPos() - indexEntry->mOffset;
365    mWriteStream->align(4);
366}
367
368namespace android {
369namespace renderscript {
370
371RsFile rsi_FileOpen(Context *rsc, char const *path, unsigned int len)
372{
373    FileA3D *fa3d = new FileA3D(rsc);
374
375    FILE *f = fopen("/sdcard/test.a3d", "rb");
376    if (f) {
377        fa3d->load(f);
378        fclose(f);
379        fa3d->incUserRef();
380        return fa3d;
381    }
382    delete fa3d;
383    return NULL;
384}
385
386
387}
388}
389
390RsObjectBase rsaFileA3DGetEntryByIndex(RsContext con, uint32_t index, RsFile file)
391{
392    FileA3D *fa3d = static_cast<FileA3D *>(file);
393    if(!fa3d) {
394        LOGE("Can't load entry. No valid file");
395        return NULL;
396    }
397
398    ObjectBase *obj = fa3d->initializeFromEntry(index);
399    LOGV("Returning object with name %s", obj->getName());
400
401    return obj;
402}
403
404
405void rsaFileA3DGetNumIndexEntries(RsContext con, int32_t *numEntries, RsFile file)
406{
407    FileA3D *fa3d = static_cast<FileA3D *>(file);
408
409    if(fa3d) {
410        *numEntries = fa3d->getNumIndexEntries();
411    }
412    else {
413        *numEntries = 0;
414    }
415}
416
417void rsaFileA3DGetIndexEntries(RsContext con, RsFileIndexEntry *fileEntries, uint32_t numEntries, RsFile file)
418{
419    FileA3D *fa3d = static_cast<FileA3D *>(file);
420
421    if(!fa3d) {
422        LOGE("Can't load index entries. No valid file");
423        return;
424    }
425
426    uint32_t numFileEntries = fa3d->getNumIndexEntries();
427    if(numFileEntries != numEntries || numEntries == 0 || fileEntries == NULL) {
428        LOGE("Can't load index entries. Invalid number requested");
429        return;
430    }
431
432    for(uint32_t i = 0; i < numFileEntries; i ++) {
433        const FileA3D::A3DIndexEntry *entry = fa3d->getIndexEntry(i);
434        fileEntries[i].classID = entry->getType();
435        fileEntries[i].objectName = entry->getObjectName().string();
436    }
437
438}
439
440RsFile rsaFileA3DCreateFromAssetStream(RsContext con, const void *data, uint32_t len)
441{
442    if (data == NULL) {
443        LOGE("File load failed. Asset stream is NULL");
444        return NULL;
445    }
446
447    Context *rsc = static_cast<Context *>(con);
448    FileA3D *fa3d = new FileA3D(rsc);
449    fa3d->incUserRef();
450
451    fa3d->load(data, len);
452    return fa3d;
453}
454