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/*
* Copyright (C) 2009 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 MEDIA_EXTRACTOR_H_
#define MEDIA_EXTRACTOR_H_
#include <utils/RefBase.h>
namespace android {
class DataSource;
class MediaSource;
class MetaData;
class MediaExtractor : public RefBase {
public:
static sp<MediaExtractor> Create(
const sp<DataSource> &source, const char *mime = NULL);
virtual size_t countTracks() = 0;
virtual sp<MediaSource> getTrack(size_t index) = 0;
enum GetTrackMetaDataFlags {
kIncludeExtensiveMetaData = 1
};
virtual sp<MetaData> getTrackMetaData(
size_t index, uint32_t flags = 0) = 0;
// Return container specific meta-data. The default implementation
// returns an empty metadata object.
virtual sp<MetaData> getMetaData();
enum Flags {
CAN_SEEK_BACKWARD = 1, // the "seek 10secs back button"
CAN_SEEK_FORWARD = 2, // the "seek 10secs forward button"
CAN_PAUSE = 4,
CAN_SEEK = 8, // the "seek bar"
};
// If subclasses do _not_ override this, the default is
// CAN_SEEK_BACKWARD | CAN_SEEK_FORWARD | CAN_SEEK | CAN_PAUSE
virtual uint32_t flags() const;
// for DRM
void setDrmFlag(bool flag) {
mIsDrm = flag;
};
bool getDrmFlag() {
return mIsDrm;
}
virtual char* getDrmTrackInfo(size_t trackID, int *len) {
return NULL;
}
virtual void setUID(uid_t uid) {
}
protected:
MediaExtractor() : mIsDrm(false) {}
virtual ~MediaExtractor() {}
private:
bool mIsDrm;
MediaExtractor(const MediaExtractor &);
MediaExtractor &operator=(const MediaExtractor &);
};
} // namespace android
#endif // MEDIA_EXTRACTOR_H_
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