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/*
* 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
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