1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <media/stagefright/foundation/ADebug.h> 18 19 #include "StreamSource.h" 20 21 namespace android { 22 23 StreamSource::StreamSource(SkStream *stream) 24 : mStream(stream) { 25 CHECK(stream != NULL); 26 mSize = stream->getLength(); 27 } 28 29 StreamSource::~StreamSource() { 30 delete mStream; 31 mStream = NULL; 32 } 33 34 status_t StreamSource::initCheck() const { 35 return mStream != NULL ? OK : NO_INIT; 36 } 37 38 ssize_t StreamSource::readAt(off64_t offset, void *data, size_t size) { 39 Mutex::Autolock autoLock(mLock); 40 41 mStream->rewind(); 42 mStream->skip(offset); 43 ssize_t result = mStream->read(data, size); 44 45 return result; 46 } 47 48 status_t StreamSource::getSize(off64_t *size) { 49 *size = mSize; 50 return OK; 51 } 52 53 } // namespace android 54
