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#include <inttypes.h>
26
27namespace android {
28namespace renderscript {
29
30FileA3D::FileA3D(Context *rsc) : ObjectBase(rsc) {
31    mAlloc = nullptr;
32    mData = nullptr;
33    mWriteStream = nullptr;
34    mReadStream = nullptr;
35
36    mMajorVersion = 0;
37    mMinorVersion = 1;
38    mDataSize = 0;
39}
40
41FileA3D::~FileA3D() {
42    for (size_t i = 0; i < mIndex.size(); i ++) {
43        delete mIndex[i];
44    }
45    for (size_t i = 0; i < mWriteIndex.size(); i ++) {
46        delete mWriteIndex[i];
47    }
48    if (mWriteStream) {
49        delete mWriteStream;
50    }
51    if (mReadStream) {
52        delete mReadStream;
53    }
54    if (mAlloc) {
55        free(mAlloc);
56    }
57}
58
59void FileA3D::parseHeader(IStream *headerStream) {
60    mMajorVersion = headerStream->loadU32();
61    mMinorVersion = headerStream->loadU32();
62    uint32_t flags = headerStream->loadU32();
63    mUse64BitOffsets = (flags & 1) != 0;
64
65    uint32_t numIndexEntries = headerStream->loadU32();
66    for (uint32_t i = 0; i < numIndexEntries; i ++) {
67        A3DIndexEntry *entry = new A3DIndexEntry();
68        entry->mObjectName = headerStream->loadString();
69
70        //ALOGV("Header data, entry name = %s", entry->mObjectName.string());
71        entry->mType = (RsA3DClassID)headerStream->loadU32();
72        if (mUse64BitOffsets){
73            entry->mOffset = headerStream->loadOffset();
74            entry->mLength = headerStream->loadOffset();
75        } else {
76            entry->mOffset = headerStream->loadU32();
77            entry->mLength = headerStream->loadU32();
78        }
79        entry->mRsObj = nullptr;
80        mIndex.push_back(entry);
81    }
82}
83
84bool FileA3D::load(Asset *asset) {
85    return false;
86}
87
88bool FileA3D::load(const void *data, size_t length) {
89    const uint8_t *localData = (const uint8_t *)data;
90
91    size_t lengthRemaining = length;
92    size_t magicStrLen = 12;
93    if ((length < magicStrLen) ||
94        memcmp(data, "Android3D_ff", magicStrLen)) {
95        return false;
96    }
97
98    localData += magicStrLen;
99    lengthRemaining -= magicStrLen;
100
101    // Next we get our header size
102    uint64_t headerSize = 0;
103    if (lengthRemaining < sizeof(headerSize)) {
104        return false;
105    }
106
107    memcpy(&headerSize, localData, sizeof(headerSize));
108    localData += sizeof(headerSize);
109    lengthRemaining -= sizeof(headerSize);
110
111    if (lengthRemaining < headerSize) {
112        return false;
113    }
114
115    // Now open the stream to parse the header
116    IStream headerStream(localData, false);
117    parseHeader(&headerStream);
118
119    localData += headerSize;
120    lengthRemaining -= headerSize;
121
122    if (lengthRemaining < sizeof(mDataSize)) {
123        return false;
124    }
125
126    // Read the size of the data
127    memcpy(&mDataSize, localData, sizeof(mDataSize));
128    localData += sizeof(mDataSize);
129    lengthRemaining -= sizeof(mDataSize);
130
131    if (lengthRemaining < mDataSize) {
132        return false;
133    }
134
135    // We should know enough to read the file in at this point.
136    mData = (uint8_t *)localData;
137    mReadStream = new IStream(mData, mUse64BitOffsets);
138
139    return true;
140}
141
142bool FileA3D::load(FILE *f) {
143    char magicString[12];
144    size_t len;
145
146    ALOGV("file open 1");
147    len = fread(magicString, 1, 12, f);
148    if ((len != 12) ||
149        memcmp(magicString, "Android3D_ff", 12)) {
150        return false;
151    }
152
153    // Next thing is the size of the header
154    uint64_t headerSize = 0;
155    len = fread(&headerSize, 1, sizeof(headerSize), f);
156    if (len != sizeof(headerSize) || headerSize == 0) {
157        return false;
158    }
159
160    uint8_t *headerData = (uint8_t *)malloc(headerSize);
161    if (!headerData) {
162        return false;
163    }
164
165    len = fread(headerData, 1, headerSize, f);
166    if (len != headerSize) {
167        free(headerData);
168        return false;
169    }
170
171    // Now open the stream to parse the header
172    IStream headerStream(headerData, false);
173    parseHeader(&headerStream);
174
175    free(headerData);
176
177    // Next thing is the size of the header
178    len = fread(&mDataSize, 1, sizeof(mDataSize), f);
179    if (len != sizeof(mDataSize) || mDataSize == 0) {
180        return false;
181    }
182
183    ALOGV("file open size = %" PRIi64, mDataSize);
184
185    // We should know enough to read the file in at this point.
186    mAlloc = malloc(mDataSize);
187    if (!mAlloc) {
188        return false;
189    }
190    mData = (uint8_t *)mAlloc;
191    len = fread(mAlloc, 1, mDataSize, f);
192    if (len != mDataSize) {
193        return false;
194    }
195
196    mReadStream = new IStream(mData, mUse64BitOffsets);
197
198    ALOGV("Header is read an stream initialized");
199    return true;
200}
201
202size_t FileA3D::getNumIndexEntries() const {
203    return mIndex.size();
204}
205
206FileA3D::A3DIndexEntry::~A3DIndexEntry() {
207    delete[] mObjectName;
208}
209
210const FileA3D::A3DIndexEntry *FileA3D::getIndexEntry(size_t index) const {
211    if (index < mIndex.size()) {
212        return mIndex[index];
213    }
214    return nullptr;
215}
216
217ObjectBase *FileA3D::initializeFromEntry(size_t index) {
218    if (index >= mIndex.size()) {
219        return nullptr;
220    }
221
222    FileA3D::A3DIndexEntry *entry = mIndex[index];
223    if (!entry) {
224        return nullptr;
225    }
226
227    if (entry->mRsObj) {
228        entry->mRsObj->incUserRef();
229        return entry->mRsObj;
230    }
231
232    // Seek to the beginning of object
233    mReadStream->reset(entry->mOffset);
234    switch (entry->mType) {
235        case RS_A3D_CLASS_ID_UNKNOWN:
236            return nullptr;
237        case RS_A3D_CLASS_ID_MESH:
238            entry->mRsObj = Mesh::createFromStream(mRSC, mReadStream);
239            break;
240        case RS_A3D_CLASS_ID_TYPE:
241            entry->mRsObj = Type::createFromStream(mRSC, mReadStream);
242            break;
243        case RS_A3D_CLASS_ID_ELEMENT:
244            entry->mRsObj = Element::createFromStream(mRSC, mReadStream);
245            break;
246        case RS_A3D_CLASS_ID_ALLOCATION:
247            entry->mRsObj = Allocation::createFromStream(mRSC, mReadStream);
248            break;
249        case RS_A3D_CLASS_ID_PROGRAM_VERTEX:
250            //entry->mRsObj = ProgramVertex::createFromStream(mRSC, mReadStream);
251            break;
252        case RS_A3D_CLASS_ID_PROGRAM_RASTER:
253            //entry->mRsObj = ProgramRaster::createFromStream(mRSC, mReadStream);
254            break;
255        case RS_A3D_CLASS_ID_PROGRAM_FRAGMENT:
256            //entry->mRsObj = ProgramFragment::createFromStream(mRSC, mReadStream);
257            break;
258        case RS_A3D_CLASS_ID_PROGRAM_STORE:
259            //entry->mRsObj = ProgramStore::createFromStream(mRSC, mReadStream);
260            break;
261        case RS_A3D_CLASS_ID_SAMPLER:
262            //entry->mRsObj = Sampler::createFromStream(mRSC, mReadStream);
263            break;
264        case RS_A3D_CLASS_ID_ANIMATION:
265            //entry->mRsObj = Animation::createFromStream(mRSC, mReadStream);
266            break;
267        case RS_A3D_CLASS_ID_ADAPTER_1D:
268            //entry->mRsObj = Adapter1D::createFromStream(mRSC, mReadStream);
269            break;
270        case RS_A3D_CLASS_ID_ADAPTER_2D:
271            //entry->mRsObj = Adapter2D::createFromStream(mRSC, mReadStream);
272            break;
273        case RS_A3D_CLASS_ID_SCRIPT_C:
274            break;
275        case RS_A3D_CLASS_ID_SCRIPT_KERNEL_ID:
276            break;
277        case RS_A3D_CLASS_ID_SCRIPT_INVOKE_ID:
278            break;
279        case RS_A3D_CLASS_ID_SCRIPT_FIELD_ID:
280            break;
281        case RS_A3D_CLASS_ID_SCRIPT_METHOD_ID:
282            break;
283        case RS_A3D_CLASS_ID_SCRIPT_GROUP:
284            break;
285        case RS_A3D_CLASS_ID_CLOSURE:
286            break;
287        case RS_A3D_CLASS_ID_SCRIPT_GROUP2:
288            break;
289    }
290    if (entry->mRsObj) {
291        entry->mRsObj->incUserRef();
292    }
293    return entry->mRsObj;
294}
295
296bool FileA3D::writeFile(const char *filename) {
297    if (!mWriteStream) {
298        ALOGE("No objects to write\n");
299        return false;
300    }
301    if (mWriteStream->getPos() == 0) {
302        ALOGE("No objects to write\n");
303        return false;
304    }
305
306    FILE *writeHandle = fopen(filename, "wb");
307    if (!writeHandle) {
308        ALOGE("Couldn't open the file for writing\n");
309        return false;
310    }
311
312    // Open a new stream to make writing the header easier
313    OStream headerStream(5*1024, false);
314    headerStream.addU32(mMajorVersion);
315    headerStream.addU32(mMinorVersion);
316    uint32_t is64Bit = 0;
317    headerStream.addU32(is64Bit);
318
319    uint32_t writeIndexSize = mWriteIndex.size();
320    headerStream.addU32(writeIndexSize);
321    for (uint32_t i = 0; i < writeIndexSize; i ++) {
322        headerStream.addString(mWriteIndex[i]->mObjectName);
323        headerStream.addU32((uint32_t)mWriteIndex[i]->mType);
324        if (mUse64BitOffsets){
325            headerStream.addOffset(mWriteIndex[i]->mOffset);
326            headerStream.addOffset(mWriteIndex[i]->mLength);
327        } else {
328            uint32_t offset = (uint32_t)mWriteIndex[i]->mOffset;
329            headerStream.addU32(offset);
330            offset = (uint32_t)mWriteIndex[i]->mLength;
331            headerStream.addU32(offset);
332        }
333    }
334
335    // Write our magic string so we know we are reading the right file
336    fwrite(A3D_MAGIC_KEY, sizeof(char), strlen(A3D_MAGIC_KEY), writeHandle);
337
338    // Store the size of the header to make it easier to parse when we read it
339    uint64_t headerSize = headerStream.getPos();
340    fwrite(&headerSize, sizeof(headerSize), 1, writeHandle);
341
342    // Now write our header
343    fwrite(headerStream.getPtr(), sizeof(uint8_t), headerStream.getPos(), writeHandle);
344
345    // Now write the size of the data part of the file for easier parsing later
346    uint64_t fileDataSize = mWriteStream->getPos();
347    fwrite(&fileDataSize, sizeof(fileDataSize), 1, writeHandle);
348
349    fwrite(mWriteStream->getPtr(), sizeof(uint8_t), mWriteStream->getPos(), writeHandle);
350
351    int status = fclose(writeHandle);
352
353    if (status != 0) {
354        ALOGE("Couldn't close file\n");
355        return false;
356    }
357
358    return true;
359}
360
361void FileA3D::appendToFile(Context *con, ObjectBase *obj) {
362    if (!obj) {
363        return;
364    }
365    if (!mWriteStream) {
366        const uint64_t initialStreamSize = 256*1024;
367        mWriteStream = new OStream(initialStreamSize, false);
368    }
369    A3DIndexEntry *indexEntry = new A3DIndexEntry();
370    indexEntry->mObjectName = rsuCopyString(obj->getName());
371    indexEntry->mType = obj->getClassId();
372    indexEntry->mOffset = mWriteStream->getPos();
373    indexEntry->mRsObj = obj;
374    mWriteIndex.push_back(indexEntry);
375    obj->serialize(con, mWriteStream);
376    indexEntry->mLength = mWriteStream->getPos() - indexEntry->mOffset;
377    mWriteStream->align(4);
378}
379
380} // namespace renderscript
381} // namespace android
382