1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.media;
18
19import android.media.MediaCodecInfo;
20
21/**
22 * Allows you to enumerate available codecs, each specified as a {@link MediaCodecInfo} object,
23 * find a codec supporting a given format and query the capabilities
24 * of a given codec.
25 * <p>See {@link MediaCodecInfo} for sample usage.
26 */
27final public class MediaCodecList {
28    /**
29     * Count the number of available codecs.
30     */
31    public static native final int getCodecCount();
32
33    public static final MediaCodecInfo getCodecInfoAt(int index) {
34        if (index < 0 || index > getCodecCount()) {
35            throw new IllegalArgumentException();
36        }
37
38        return new MediaCodecInfo(index);
39    }
40
41    /* package private */ static native final String getCodecName(int index);
42
43    /* package private */ static native final boolean isEncoder(int index);
44
45    /* package private */ static native final String[] getSupportedTypes(int index);
46
47    /* package private */ static native final MediaCodecInfo.CodecCapabilities
48        getCodecCapabilities(int index, String type);
49
50    /* package private */ static native final int findCodecByName(String codec);
51
52    private static native final void native_init();
53
54    private MediaCodecList() {}
55
56    static {
57        System.loadLibrary("media_jni");
58        native_init();
59    }
60}
61