| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "WVMExtractor" |
| #include <utils/Log.h> |
| |
| #include "include/WVMExtractor.h" |
| |
| #include <arpa/inet.h> |
| #include <utils/String8.h> |
| #include <media/stagefright/Utils.h> |
| #include <media/stagefright/DataSource.h> |
| #include <media/stagefright/MediaSource.h> |
| #include <media/stagefright/MediaDefs.h> |
| #include <media/stagefright/MetaData.h> |
| #include <media/stagefright/MediaErrors.h> |
| #include <media/stagefright/MediaBuffer.h> |
| #include <media/stagefright/MediaDebug.h> |
| #include <dlfcn.h> |
| |
| #include <utils/Errors.h> |
| |
| /* The extractor lifetime is short - just long enough to get |
| * the media sources constructed - so the shared lib needs to remain open |
| * beyond the lifetime of the extractor. So keep the handle as a global |
| * rather than a member of the extractor |
| */ |
| void *gVendorLibHandle = NULL; |
| |
| namespace android { |
| |
| static Mutex gWVMutex; |
| |
| WVMExtractor::WVMExtractor(const sp<DataSource> &source) |
| : mDataSource(source) { |
| { |
| Mutex::Autolock autoLock(gWVMutex); |
| if (gVendorLibHandle == NULL) { |
| gVendorLibHandle = dlopen("libwvm.so", RTLD_NOW); |
| } |
| |
| if (gVendorLibHandle == NULL) { |
| LOGE("Failed to open libwvm.so"); |
| return; |
| } |
| } |
| |
| typedef MediaExtractor *(*GetInstanceFunc)(sp<DataSource>); |
| GetInstanceFunc getInstanceFunc = |
| (GetInstanceFunc) dlsym(gVendorLibHandle, |
| "_ZN7android11GetInstanceENS_2spINS_10DataSourceEEE"); |
| |
| if (getInstanceFunc) { |
| LOGD("Calling GetInstanceFunc"); |
| mImpl = (*getInstanceFunc)(source); |
| CHECK(mImpl != NULL); |
| } else { |
| LOGE("Failed to locate GetInstance in libwvm.so"); |
| } |
| } |
| |
| WVMExtractor::~WVMExtractor() { |
| } |
| |
| size_t WVMExtractor::countTracks() { |
| return (mImpl != NULL) ? mImpl->countTracks() : 0; |
| } |
| |
| sp<MediaSource> WVMExtractor::getTrack(size_t index) { |
| if (mImpl == NULL) { |
| return NULL; |
| } |
| return mImpl->getTrack(index); |
| } |
| |
| sp<MetaData> WVMExtractor::getTrackMetaData(size_t index, uint32_t flags) { |
| if (mImpl == NULL) { |
| return NULL; |
| } |
| return mImpl->getTrackMetaData(index, flags); |
| } |
| |
| sp<MetaData> WVMExtractor::getMetaData() { |
| if (mImpl == NULL) { |
| return NULL; |
| } |
| return mImpl->getMetaData(); |
| } |
| |
| } //namespace android |
| |