10f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 20f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines/* 30f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * Copyright (C) 2009 The Android Open Source Project 40f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * 50f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * Licensed under the Apache License, Version 2.0 (the "License"); 60f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * you may not use this file except in compliance with the License. 70f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * You may obtain a copy of the License at 80f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * 90f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * http://www.apache.org/licenses/LICENSE-2.0 100f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * 110f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * Unless required by applicable law or agreed to in writing, software 120f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * distributed under the License is distributed on an "AS IS" BASIS, 130f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 140f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * See the License for the specific language governing permissions and 150f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines * limitations under the License. 160f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines */ 170f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 180f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines#include "rsContext.h" 190f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines#include "rsStream.h" 200f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 210f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hinesusing namespace android; 220f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hinesusing namespace android::renderscript; 230f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 240f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen HinesIStream::IStream(const uint8_t *buf, bool use64) { 250f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mData = buf; 260f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mPos = 0; 270f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mUse64 = use64; 280f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines} 290f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 300f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hinesvoid IStream::loadByteArray(void *dest, size_t numBytes) { 310f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines memcpy(dest, mData + mPos, numBytes); 320f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mPos += numBytes; 330f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines} 340f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 350f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hinesuint64_t IStream::loadOffset() { 360f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines uint64_t tmp; 370f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines if (mUse64) { 380f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mPos = (mPos + 7) & (~7); 390f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines tmp = reinterpret_cast<const uint64_t *>(&mData[mPos])[0]; 400f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mPos += sizeof(uint64_t); 410f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines return tmp; 420f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines } 430f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines return loadU32(); 440f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines} 450f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 460f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hinesvoid IStream::loadString(String8 *s) { 470f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines uint32_t len = loadU32(); 480f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines s->setTo((const char *)&mData[mPos], len); 490f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mPos += len; 500f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines} 510f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 520f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines// Output stream implementation 530f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen HinesOStream::OStream(uint64_t len, bool use64) { 540f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mData = (uint8_t*)malloc(len); 550f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mLength = len; 560f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mPos = 0; 570f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mUse64 = use64; 580f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines} 590f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 600f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen HinesOStream::~OStream() { 610f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines free(mData); 620f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines} 630f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 640f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hinesvoid OStream::addByteArray(const void *src, size_t numBytes) { 650f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines // We need to potentially grow more than once if the number of byes we write is substantial 660f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines while (mPos + numBytes >= mLength) { 670f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines growSize(); 680f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines } 690f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines memcpy(mData + mPos, src, numBytes); 700f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mPos += numBytes; 710f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines} 720f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 730f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hinesvoid OStream::addOffset(uint64_t v) { 740f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines if (mUse64) { 750f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mPos = (mPos + 7) & (~7); 760f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines if (mPos + sizeof(v) >= mLength) { 770f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines growSize(); 780f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines } 790f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mData[mPos++] = (uint8_t)(v & 0xff); 800f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mData[mPos++] = (uint8_t)((v >> 8) & 0xff); 810f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mData[mPos++] = (uint8_t)((v >> 16) & 0xff); 820f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mData[mPos++] = (uint8_t)((v >> 24) & 0xff); 830f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mData[mPos++] = (uint8_t)((v >> 32) & 0xff); 840f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mData[mPos++] = (uint8_t)((v >> 40) & 0xff); 850f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mData[mPos++] = (uint8_t)((v >> 48) & 0xff); 860f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mData[mPos++] = (uint8_t)((v >> 56) & 0xff); 870f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines } else { 880f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines addU32(v); 890f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines } 900f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines} 910f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 920f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hinesvoid OStream::addString(String8 *s) { 930f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines uint32_t len = s->size(); 940f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines addU32(len); 950f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines if (mPos + len*sizeof(char) >= mLength) { 960f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines growSize(); 970f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines } 980f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines char *stringData = reinterpret_cast<char *>(&mData[mPos]); 990f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines for (uint32_t i = 0; i < len; i ++) { 1000f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines stringData[i] = s->string()[i]; 1010f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines } 1020f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mPos += len*sizeof(char); 1030f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines} 1040f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 1050f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hinesvoid OStream::growSize() { 1060f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines uint8_t *newData = (uint8_t*)malloc(mLength*2); 1070f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines memcpy(newData, mData, mLength*sizeof(uint8_t)); 1080f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mLength = mLength * 2; 1090f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines free(mData); 1100f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines mData = newData; 1110f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines} 1120f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 1130f6f72e19db852cc253fd2fc05459abdf8d5c3afStephen Hines 114