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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.
*/
#ifndef WVM_EXTRACTOR_H_
#define WVM_EXTRACTOR_H_
#include <media/stagefright/MediaExtractor.h>
#include <utils/Errors.h>
namespace android {
class DataSource;
class WVMLoadableExtractor : public MediaExtractor {
public:
WVMLoadableExtractor() {}
virtual ~WVMLoadableExtractor() {}
virtual int64_t getCachedDurationUs(status_t *finalStatus) = 0;
virtual void setAdaptiveStreamingMode(bool adaptive) = 0;
};
class WVMExtractor : public MediaExtractor {
public:
WVMExtractor(const sp<DataSource> &source);
virtual size_t countTracks();
virtual sp<MediaSource> getTrack(size_t index);
virtual sp<MetaData> getTrackMetaData(size_t index, uint32_t flags);
virtual sp<MetaData> getMetaData();
// Return the amount of data cached from the current
// playback positiion (in us).
// While more data is still being fetched *finalStatus == OK,
// Once fetching is completed (no more data available), *finalStatus != OK
// If fetching completed normally (i.e. reached EOS instead of IO error)
// *finalStatus == ERROR_END_OF_STREAM
int64_t getCachedDurationUs(status_t *finalStatus);
// Set to use adaptive streaming mode by the WV component.
// If adaptive == true, adaptive streaming mode will be used.
// Default mode is non-adaptive streaming mode.
// Should set to use adaptive streaming mode only if widevine:// protocol
// is used.
void setAdaptiveStreamingMode(bool adaptive);
protected:
virtual ~WVMExtractor();
private:
sp<DataSource> mDataSource;
sp<WVMLoadableExtractor> mImpl;
WVMExtractor(const WVMExtractor &);
WVMExtractor &operator=(const WVMExtractor &);
};
} // namespace android
#endif // DRM_EXTRACTOR_H_
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