18a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin 28a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin/* 38a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * Copyright (C) 2009 The Android Open Source Project 48a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * 58a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * Licensed under the Apache License, Version 2.0 (the "License"); 68a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * you may not use this file except in compliance with the License. 78a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * You may obtain a copy of the License at 88a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * 98a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * http://www.apache.org/licenses/LICENSE-2.0 108a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * 118a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * Unless required by applicable law or agreed to in writing, software 128a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * distributed under the License is distributed on an "AS IS" BASIS, 138a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 148a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * See the License for the specific language governing permissions and 158a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin * limitations under the License. 168a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin */ 178a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin 188a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin#include "rsContext.h" 198a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin#include "rsStream.h" 208a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin 218a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskinusing namespace android; 228a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskinusing namespace android::renderscript; 238a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin 248a39da80b33691b0c82458c3b7727e13ff71277eJosiah GaskinIStream::IStream(const uint8_t *buf, bool use64) { 258a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mData = buf; 268a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mPos = 0; 278a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mUse64 = use64; 288a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin} 298a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin 308a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskinvoid IStream::loadByteArray(void *dest, size_t numBytes) { 318a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin memcpy(dest, mData + mPos, numBytes); 328a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mPos += numBytes; 338a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin} 348a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin 358a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskinuint64_t IStream::loadOffset() { 368a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin uint64_t tmp; 378a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin if (mUse64) { 388a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mPos = (mPos + 7) & (~7); 398a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin tmp = reinterpret_cast<const uint64_t *>(&mData[mPos])[0]; 408a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mPos += sizeof(uint64_t); 418a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin return tmp; 428a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin } 438a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin return loadU32(); 448a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin} 458a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin 468a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskinvoid IStream::loadString(String8 *s) { 478a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin uint32_t len = loadU32(); 488a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin s->setTo((const char *)&mData[mPos], len); 498a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mPos += len; 508a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin} 518a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin 528a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin// Output stream implementation 538a39da80b33691b0c82458c3b7727e13ff71277eJosiah GaskinOStream::OStream(uint64_t len, bool use64) { 548a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mData = (uint8_t*)malloc(len); 558a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mLength = len; 568a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mPos = 0; 578a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mUse64 = use64; 588a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin} 598a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin 608a39da80b33691b0c82458c3b7727e13ff71277eJosiah GaskinOStream::~OStream() { 618a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin free(mData); 628a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin} 638a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin 648a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskinvoid OStream::addByteArray(const void *src, size_t numBytes) { 658a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin // We need to potentially grow more than once if the number of byes we write is substantial 668a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin while (mPos + numBytes >= mLength) { 678a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin growSize(); 688a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin } 698a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin memcpy(mData + mPos, src, numBytes); 708a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mPos += numBytes; 718a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin} 728a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin 738a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskinvoid OStream::addOffset(uint64_t v) { 748a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin if (mUse64) { 758a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mPos = (mPos + 7) & (~7); 768a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin if (mPos + sizeof(v) >= mLength) { 778a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin growSize(); 788a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin } 798a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mData[mPos++] = (uint8_t)(v & 0xff); 808a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mData[mPos++] = (uint8_t)((v >> 8) & 0xff); 818a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mData[mPos++] = (uint8_t)((v >> 16) & 0xff); 828a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mData[mPos++] = (uint8_t)((v >> 24) & 0xff); 838a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mData[mPos++] = (uint8_t)((v >> 32) & 0xff); 848a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mData[mPos++] = (uint8_t)((v >> 40) & 0xff); 858a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mData[mPos++] = (uint8_t)((v >> 48) & 0xff); 868a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mData[mPos++] = (uint8_t)((v >> 56) & 0xff); 878a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin } else { 888a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin addU32(v); 898a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin } 908a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin} 918a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin 928a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskinvoid OStream::addString(String8 *s) { 938a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin uint32_t len = s->size(); 948a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin addU32(len); 958a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin if (mPos + len*sizeof(char) >= mLength) { 968a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin growSize(); 978a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin } 988a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin char *stringData = reinterpret_cast<char *>(&mData[mPos]); 998a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin for (uint32_t i = 0; i < len; i ++) { 1008a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin stringData[i] = s->string()[i]; 1018a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin } 1028a39da80b33691b0c82458c3b7727e13ff71277eJosiah Gaskin mPos += len*sizeof(char); 103} 104 105void OStream::growSize() { 106 uint8_t *newData = (uint8_t*)malloc(mLength*2); 107 memcpy(newData, mData, mLength*sizeof(uint8_t)); 108 mLength = mLength * 2; 109 free(mData); 110 mData = newData; 111} 112 113 114