Add basic metadata retrieval support for midi, ogg, etc.

Bug 2050320

1 files changed, 49 insertions, 0 deletions

diff --git a/media/libmediaplayerservice/MidiMetadataRetriever.h b/media/libmediaplayerservice/MidiMetadataRetriever.h
new file mode 100644
index 0000000..73ff347
--- /dev/null
+++ b/media/libmediaplayerservice/MidiMetadataRetriever.h
@@ -0,0 +1,49 @@
+/*
+**
+** Copyright 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 ANDROID_MIDIMETADATARETRIEVER_H
+#define ANDROID_MIDIMETADATARETRIEVER_H
+
+#include <utils/threads.h>
+#include <utils/Errors.h>
+#include <media/MediaMetadataRetrieverInterface.h>
+
+#include "MidiFile.h"
+
+namespace android {
+
+class MidiMetadataRetriever : public MediaMetadataRetrieverInterface {
+public:
+                                   MidiMetadataRetriever() {}
+                                   ~MidiMetadataRetriever() {}
+
+    virtual status_t                setDataSource(const char *url);
+    virtual status_t                setDataSource(int fd, int64_t offset, int64_t length);
+    virtual const char*             extractMetadata(int keyCode);
+
+private:
+    static const uint32_t MAX_METADATA_STRING_LENGTH = 128;
+    void clearMetadataValues();
+
+    Mutex               mLock;
+    sp<MidiFile>        mMidiPlayer;
+    char                mMetadataValues[1][MAX_METADATA_STRING_LENGTH];
+};
+
+}; // namespace android
+
+#endif // ANDROID_MIDIMETADATARETRIEVER_H