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Diffstat (limited to 'media/libstagefright/WVMExtractor.cpp')
-rw-r--r-- | media/libstagefright/WVMExtractor.cpp | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/media/libstagefright/WVMExtractor.cpp b/media/libstagefright/WVMExtractor.cpp new file mode 100644 index 0000000..7c72852 --- /dev/null +++ b/media/libstagefright/WVMExtractor.cpp @@ -0,0 +1,104 @@ +/* + * 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 + |