102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
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/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MEDIAMETADATARETRIEVER_H
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#define MEDIAMETADATARETRIEVER_H
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#include <graphics/SkBitmap.h> // for SkBitmap
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namespace android {
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// Keep these in synch with the constants defined in MediaMetadataRetriever.java
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// class.
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enum {
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METADATA_KEY_CD_TRACK_NUMBER = 0,
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METADATA_KEY_ALBUM = 1,
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METADATA_KEY_ARTIST = 2,
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METADATA_KEY_AUTHOR = 3,
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METADATA_KEY_COMPOSER = 4,
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METADATA_KEY_DATE = 5,
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METADATA_KEY_GENRE = 6,
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METADATA_KEY_TITLE = 7,
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METADATA_KEY_YEAR = 8,
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METADATA_KEY_DURATION = 9,
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METADATA_KEY_NUM_TRACKS = 10,
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METADATA_KEY_IS_DRM_CRIPPLED = 11,
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METADATA_KEY_CODEC = 12,
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// Add more here...
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};
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// A utility class that holds the size and actual data in album art.
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class MediaAlbumArt {
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public:
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MediaAlbumArt(): length(0), data(NULL) {}
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MediaAlbumArt(const MediaAlbumArt& copy) {
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// Don't be caught by uninitialized variables!!
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length = 0;
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data = NULL;
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setData(copy.length, copy.data);
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}
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MediaAlbumArt(const char* url);
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~MediaAlbumArt() { clearData(); }
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void clearData();
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status_t setData(unsigned int len, const char* buf);
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char *getData() const { return copyData(length, data); }
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unsigned int getLength() const { return length; }
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private:
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// Disable copy assignment operator!
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MediaAlbumArt& operator=(const MediaAlbumArt& rhs);
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static char* copyData(unsigned int len, const char* buf);
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unsigned int length; // Number of bytes in data.
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char *data; // Actual binary data.
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};
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class MediaMetadataRetrieverImpl
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{
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public:
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virtual ~MediaMetadataRetrieverImpl() {};
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virtual status_t setDataSource(const char* dataSourceUrl) = 0;
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virtual SkBitmap *captureFrame() = 0;
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virtual const char* extractMetadata(int keyCode) = 0;
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virtual MediaAlbumArt* extractAlbumArt() = 0;
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virtual void setMode(int mode) = 0;
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};
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class MediaMetadataRetriever
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{
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public:
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static status_t setDataSource(const char* dataSourceUrl);
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static SkBitmap *captureFrame();
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static const char* extractMetadata(int keyCode);
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static MediaAlbumArt* extractAlbumArt();
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static void setMode(int mode);
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static void release();
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static void create();
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private:
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MediaMetadataRetriever() {}
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static MediaMetadataRetrieverImpl *mRetriever;
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static void *mLibHandler;
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};
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}; // namespace android
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#endif // MEDIAMETADATARETRIEVER_H
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