Android example source code file (DecoderCapabilities.java)

This example Android source code file (DecoderCapabilities.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

arraylist, audio_decoder_wma, audiodecoder, decodercapabilities, don't, list, util, video_decoder_wmv, videodecoder

The DecoderCapabilities.java Android example source code

/*
 * Copyright (C) 2010 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.
 */

package android.media;

import java.util.List;
import java.util.ArrayList;

/**
 * {@hide}
 *
 * The DecoderCapabilities class is used to retrieve the types of the
 * video and audio decoder(s) supported on a specific Android platform.
 */
public class DecoderCapabilities
{
    /**
     * The VideoDecoder class represents the type of a video decoder
     *
     */
    public enum VideoDecoder {
        VIDEO_DECODER_WMV,
    };

    /**
     * The AudioDecoder class represents the type of an audio decoder
     */
    public enum AudioDecoder {
        AUDIO_DECODER_WMA,
    };

    static {
        System.loadLibrary("media_jni");
        native_init();
    }

    /**
     * Returns the list of video decoder types
     * @see android.media.DecoderCapabilities.VideoDecoder
     */
    public static List<VideoDecoder> getVideoDecoders() {
        List<VideoDecoder> decoderList = new ArrayList();
        int nDecoders = native_get_num_video_decoders();
        for (int i = 0; i < nDecoders; ++i) {
            decoderList.add(VideoDecoder.values()[native_get_video_decoder_type(i)]);
        }
        return decoderList;
    }

    /**
     * Returns the list of audio decoder types
     * @see android.media.DecoderCapabilities.AudioDecoder
     */
    public static List<AudioDecoder> getAudioDecoders() {
        List<AudioDecoder> decoderList = new ArrayList();
        int nDecoders = native_get_num_audio_decoders();
        for (int i = 0; i < nDecoders; ++i) {
            decoderList.add(AudioDecoder.values()[native_get_audio_decoder_type(i)]);
        }
        return decoderList;
    }

    private DecoderCapabilities() {}  // Don't call me

    // Implemented by JNI
    private static native final void native_init();
    private static native final int native_get_num_video_decoders();
    private static native final int native_get_video_decoder_type(int index);
    private static native final int native_get_num_audio_decoders();
    private static native final int native_get_audio_decoder_type(int index);
}