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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 MEDIAMETADATARETRIEVER_H
#define MEDIAMETADATARETRIEVER_H
#include <graphics/SkBitmap.h> // for SkBitmap
namespace android {
// Keep these in synch with the constants defined in MediaMetadataRetriever.java
// class.
enum {
METADATA_KEY_CD_TRACK_NUMBER = 0,
METADATA_KEY_ALBUM = 1,
METADATA_KEY_ARTIST = 2,
METADATA_KEY_AUTHOR = 3,
METADATA_KEY_COMPOSER = 4,
METADATA_KEY_DATE = 5,
METADATA_KEY_GENRE = 6,
METADATA_KEY_TITLE = 7,
METADATA_KEY_YEAR = 8,
METADATA_KEY_DURATION = 9,
METADATA_KEY_NUM_TRACKS = 10,
METADATA_KEY_IS_DRM_CRIPPLED = 11,
METADATA_KEY_CODEC = 12,
// Add more here...
};
// A utility class that holds the size and actual data in album art.
class MediaAlbumArt {
public:
MediaAlbumArt(): length(0), data(NULL) {}
MediaAlbumArt(const MediaAlbumArt& copy) {
// Don't be caught by uninitialized variables!!
length = 0;
data = NULL;
setData(copy.length, copy.data);
}
MediaAlbumArt(const char* url);
~MediaAlbumArt() { clearData(); }
void clearData();
status_t setData(unsigned int len, const char* buf);
char *getData() const { return copyData(length, data); }
unsigned int getLength() const { return length; }
private:
// Disable copy assignment operator!
MediaAlbumArt& operator=(const MediaAlbumArt& rhs);
static char* copyData(unsigned int len, const char* buf);
unsigned int length; // Number of bytes in data.
char *data; // Actual binary data.
};
class MediaMetadataRetrieverImpl
{
public:
virtual ~MediaMetadataRetrieverImpl() {};
virtual status_t setDataSource(const char* dataSourceUrl) = 0;
virtual SkBitmap *captureFrame() = 0;
virtual const char* extractMetadata(int keyCode) = 0;
virtual MediaAlbumArt* extractAlbumArt() = 0;
virtual void setMode(int mode) = 0;
};
class MediaMetadataRetriever
{
public:
static status_t setDataSource(const char* dataSourceUrl);
static SkBitmap *captureFrame();
static const char* extractMetadata(int keyCode);
static MediaAlbumArt* extractAlbumArt();
static void setMode(int mode);
static void release();
static void create();
private:
MediaMetadataRetriever() {}
static MediaMetadataRetrieverImpl *mRetriever;
static void *mLibHandler;
};
}; // namespace android
#endif // MEDIAMETADATARETRIEVER_H
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