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author | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
commit | 54b6cfa9a9e5b861a9930af873580d6dc20f773c (patch) | |
tree | 35051494d2af230dce54d6b31c6af8fc24091316 /include/media/mediametadataretriever.h | |
download | frameworks_base-54b6cfa9a9e5b861a9930af873580d6dc20f773c.zip frameworks_base-54b6cfa9a9e5b861a9930af873580d6dc20f773c.tar.gz frameworks_base-54b6cfa9a9e5b861a9930af873580d6dc20f773c.tar.bz2 |
Initial Contribution
Diffstat (limited to 'include/media/mediametadataretriever.h')
-rw-r--r-- | include/media/mediametadataretriever.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/include/media/mediametadataretriever.h b/include/media/mediametadataretriever.h new file mode 100644 index 0000000..586dda1 --- /dev/null +++ b/include/media/mediametadataretriever.h @@ -0,0 +1,101 @@ +/* + * 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 |