Wei-Ta Chen | 4b6f494 | 2009-09-01 17:44:49 +0800 | [diff] [blame] | 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/MediaDebug.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 | |
Wei-Ta Chen | b355012 | 2009-12-03 23:19:19 +0800 | [diff] [blame^] | 34 | status_t StreamSource::initCheck() const { |
Wei-Ta Chen | 4b6f494 | 2009-09-01 17:44:49 +0800 | [diff] [blame] | 35 | return mStream != NULL ? OK : NO_INIT; |
| 36 | } |
| 37 | |
Wei-Ta Chen | b355012 | 2009-12-03 23:19:19 +0800 | [diff] [blame^] | 38 | ssize_t StreamSource::readAt(off_t offset, void *data, size_t size) { |
Wei-Ta Chen | 4b6f494 | 2009-09-01 17:44:49 +0800 | [diff] [blame] | 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(off_t *size) { |
| 49 | *size = mSize; |
| 50 | return OK; |
| 51 | } |
| 52 | |
| 53 | } // namespace android |