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/*
**
** Copyright (C) 2008 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 ANDROID_MEDIAMETADATARETRIEVERINTERFACE_H
#define ANDROID_MEDIAMETADATARETRIEVERINTERFACE_H
#include <utils/RefBase.h>
#include <media/mediametadataretriever.h>
#include <private/media/VideoFrame.h>
namespace android {
// Abstract base class
class MediaMetadataRetrieverBase : public RefBase
{
public:
MediaMetadataRetrieverBase() {}
virtual ~MediaMetadataRetrieverBase() {}
virtual status_t setDataSource(const char *url) = 0;
virtual status_t setDataSource(int fd, int64_t offset, int64_t length) = 0;
virtual status_t setMode(int mode) = 0;
virtual status_t getMode(int* mode) const = 0;
virtual VideoFrame* captureFrame() = 0;
virtual MediaAlbumArt* extractAlbumArt() = 0;
virtual const char* extractMetadata(int keyCode) = 0;
};
// MediaMetadataRetrieverInterface
class MediaMetadataRetrieverInterface : public MediaMetadataRetrieverBase
{
public:
MediaMetadataRetrieverInterface()
: mMode(0) {
}
virtual ~MediaMetadataRetrieverInterface() {}
// @param mode The intended mode of operations:
// can be any of the following:
// METADATA_MODE_NOOP: Experimental - just add and remove data source.
// METADATA_MODE_FRAME_CAPTURE_ONLY: For capture frame/thumbnail only.
// METADATA_MODE_METADATA_RETRIEVAL_ONLY: For meta data retrieval only.
// METADATA_MODE_FRAME_CAPTURE_AND_METADATA_RETRIEVAL: For both frame
// capture and meta data retrieval.
virtual status_t setMode(int mode) {
if (mode < METADATA_MODE_NOOP ||
mode > METADATA_MODE_FRAME_CAPTURE_AND_METADATA_RETRIEVAL) {
return BAD_VALUE;
}
mMode = mode;
return NO_ERROR;
}
virtual status_t getMode(int* mode) const { *mode = mMode; return NO_ERROR; }
virtual VideoFrame* captureFrame() { return NULL; }
virtual MediaAlbumArt* extractAlbumArt() { return NULL; }
virtual const char* extractMetadata(int keyCode) { return NULL; }
uint32_t mMode;
};
}; // namespace android
#endif // ANDROID_MEDIAMETADATARETRIEVERINTERFACE_H
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