16b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen/* 26b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * Copyright (C) 2010 The Android Open Source Project 36b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * 46b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * Licensed under the Apache License, Version 2.0 (the "License"); 56b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * you may not use this file except in compliance with the License. 66b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * You may obtain a copy of the License at 76b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * 86b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * http://www.apache.org/licenses/LICENSE-2.0 96b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * 106b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * Unless required by applicable law or agreed to in writing, software 116b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * distributed under the License is distributed on an "AS IS" BASIS, 126b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 136b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * See the License for the specific language governing permissions and 146b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen * limitations under the License. 156b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen */ 166b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen 176b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen#include "Utils.h" 186b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen#include "SkUtils.h" 193449789b9ca58fee7e5cd02ff89d544f4a6bc9b5Leon Scroggins III#include "SkData.h" 206b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen 216b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chenusing namespace android; 226b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen 23c2d39573ca95994d9a44db8aea4887a67f84e5acBen WagnerAssetStreamAdaptor::AssetStreamAdaptor(Asset* asset) 24b9c58ab617c257dbece105167b21e94faad67320Leon Scroggins III : fAsset(asset) 25b9c58ab617c257dbece105167b21e94faad67320Leon Scroggins III{ 26b9c58ab617c257dbece105167b21e94faad67320Leon Scroggins III} 27b9c58ab617c257dbece105167b21e94faad67320Leon Scroggins III 286b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chenbool AssetStreamAdaptor::rewind() { 29ddb76c4644756b31be948d70aaa8ee541dd94999Kenny Root off64_t pos = fAsset->seek(0, SEEK_SET); 30ddb76c4644756b31be948d70aaa8ee541dd94999Kenny Root if (pos == (off64_t)-1) { 316b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen SkDebugf("----- fAsset->seek(rewind) failed\n"); 326b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen return false; 336b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen } 346b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen return true; 356b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen} 366b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen 37ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins IIIsize_t AssetStreamAdaptor::getLength() const { 38ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III return fAsset->getLength(); 39ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III} 40ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III 41ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins IIIbool AssetStreamAdaptor::isAtEnd() const { 42ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III return fAsset->getRemainingLength() == 0; 43ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III} 44ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III 45be896edb209e5fd99fb8f00977c2da8f24ffa067Mike ReedSkStreamRewindable* AssetStreamAdaptor::onDuplicate() const { 46ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III // Cannot create a duplicate, since each AssetStreamAdaptor 47ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III // would be modifying the Asset. 48ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III //return new AssetStreamAdaptor(fAsset); 49ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III return NULL; 50ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III} 51ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III 520492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins IIIbool AssetStreamAdaptor::hasPosition() const { 530492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III return fAsset->seek(0, SEEK_CUR) != -1; 540492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III} 550492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III 560492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins IIIsize_t AssetStreamAdaptor::getPosition() const { 570492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III const off64_t offset = fAsset->seek(0, SEEK_CUR); 580492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III if (offset == -1) { 590492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III SkDebugf("---- fAsset->seek(0, SEEK_CUR) failed\n"); 600492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III return 0; 610492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III } 620492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III 630492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III return offset; 640492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III} 650492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III 660492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins IIIbool AssetStreamAdaptor::seek(size_t position) { 670492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III if (fAsset->seek(position, SEEK_SET) == -1) { 680492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III SkDebugf("---- fAsset->seek(0, SEEK_SET) failed\n"); 690492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III return false; 700492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III } 710492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III 720492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III return true; 730492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III} 740492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III 750492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins IIIbool AssetStreamAdaptor::move(long offset) { 760492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III if (fAsset->seek(offset, SEEK_CUR) == -1) { 770492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III SkDebugf("---- fAsset->seek(%i, SEEK_CUR) failed\n", offset); 780492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III return false; 790492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III } 800492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III 810492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III return true; 820492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III} 830492eefece5ba2bb1d9ab5b3af7e350fd50343e9Leon Scroggins III 846b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chensize_t AssetStreamAdaptor::read(void* buffer, size_t size) { 856b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen ssize_t amount; 866b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen 876b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen if (NULL == buffer) { 88ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III if (0 == size) { 89ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III return 0; 906b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen } 916b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen // asset->seek returns new total offset 926b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen // we want to return amount that was skipped 936b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen 94ddb76c4644756b31be948d70aaa8ee541dd94999Kenny Root off64_t oldOffset = fAsset->seek(0, SEEK_CUR); 956b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen if (-1 == oldOffset) { 966b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen SkDebugf("---- fAsset->seek(oldOffset) failed\n"); 976b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen return 0; 986b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen } 99ddb76c4644756b31be948d70aaa8ee541dd94999Kenny Root off64_t newOffset = fAsset->seek(size, SEEK_CUR); 1006b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen if (-1 == newOffset) { 1016b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen SkDebugf("---- fAsset->seek(%d) failed\n", size); 1026b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen return 0; 1036b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen } 1046b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen amount = newOffset - oldOffset; 1056b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen } else { 1066b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen amount = fAsset->read(buffer, size); 1076b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen } 1086b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen 1096b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen if (amount < 0) { 1106b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen amount = 0; 1116b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen } 1126b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen return amount; 1136b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen} 1146b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen 115ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins IIISkMemoryStream* android::CopyAssetToStream(Asset* asset) { 116ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III if (NULL == asset) { 117ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III return NULL; 118ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III } 119ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III 1203449789b9ca58fee7e5cd02ff89d544f4a6bc9b5Leon Scroggins III const off64_t seekReturnVal = asset->seek(0, SEEK_SET); 1213449789b9ca58fee7e5cd02ff89d544f4a6bc9b5Leon Scroggins III if ((off64_t)-1 == seekReturnVal) { 122ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III SkDebugf("---- copyAsset: asset rewind failed\n"); 123ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III return NULL; 124ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III } 125ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III 1263449789b9ca58fee7e5cd02ff89d544f4a6bc9b5Leon Scroggins III const off64_t size = asset->getLength(); 127ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III if (size <= 0) { 128ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III SkDebugf("---- copyAsset: asset->getLength() returned %d\n", size); 129ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III return NULL; 130ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III } 131ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III 132d8b5c31904d9f6d1eabaa0b8417a25342407e382Ben Wagner sk_sp<SkData> data(SkData::MakeUninitialized(size)); 1333449789b9ca58fee7e5cd02ff89d544f4a6bc9b5Leon Scroggins III const off64_t len = asset->read(data->writable_data(), size); 134ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III if (len != size) { 135ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III SkDebugf("---- copyAsset: asset->read(%d) returned %d\n", size, len); 1363449789b9ca58fee7e5cd02ff89d544f4a6bc9b5Leon Scroggins III return NULL; 137ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III } 1383449789b9ca58fee7e5cd02ff89d544f4a6bc9b5Leon Scroggins III 139d8b5c31904d9f6d1eabaa0b8417a25342407e382Ben Wagner return new SkMemoryStream(std::move(data)); 140ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III} 141ca32021b43f326af7d3f4ae041f8db297f98a518Leon Scroggins III 1426b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chenjobject android::nullObjectReturn(const char msg[]) { 1436b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen if (msg) { 1446b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen SkDebugf("--- %s\n", msg); 1456b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen } 1466b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen return NULL; 1476b849e2123be98eb2a1a25b8abf0b13a279ce952Wei-Ta Chen} 148c1d7b7f71ce1a55548d7e8bb32d728190e2ffd47Yujie Qin 149c1d7b7f71ce1a55548d7e8bb32d728190e2ffd47Yujie Qinbool android::isSeekable(int descriptor) { 150c1d7b7f71ce1a55548d7e8bb32d728190e2ffd47Yujie Qin return ::lseek64(descriptor, 0, SEEK_CUR) != -1; 151c1d7b7f71ce1a55548d7e8bb32d728190e2ffd47Yujie Qin} 152127d31a6842b6cca49885c3607e7ea35b1885b6fLeon Scroggins III 153127d31a6842b6cca49885c3607e7ea35b1885b6fLeon Scroggins IIIJNIEnv* android::get_env_or_die(JavaVM* jvm) { 154127d31a6842b6cca49885c3607e7ea35b1885b6fLeon Scroggins III JNIEnv* env; 155127d31a6842b6cca49885c3607e7ea35b1885b6fLeon Scroggins III if (jvm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) { 156127d31a6842b6cca49885c3607e7ea35b1885b6fLeon Scroggins III LOG_ALWAYS_FATAL("Failed to get JNIEnv for JavaVM: %p", jvm); 157127d31a6842b6cca49885c3607e7ea35b1885b6fLeon Scroggins III } 158127d31a6842b6cca49885c3607e7ea35b1885b6fLeon Scroggins III return env; 159127d31a6842b6cca49885c3607e7ea35b1885b6fLeon Scroggins III} 160