media/tests/MediaFrameworkTest/src/com/android/mediaframeworktest/MediaProfileReader.java

/*
 * Copyright (C) 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.
 */

package com.android.mediaframeworktest;

import android.media.MediaRecorder;
import android.media.EncoderCapabilities;
import android.media.EncoderCapabilities.VideoEncoderCap;
import android.media.EncoderCapabilities.AudioEncoderCap;
import android.media.DecoderCapabilities;
import android.media.DecoderCapabilities.VideoDecoder;
import android.media.DecoderCapabilities.AudioDecoder;

import android.os.SystemProperties;
import java.util.List;
import java.util.HashMap;

public class MediaProfileReader
{
    private static final List<VideoDecoder> videoDecoders = DecoderCapabilities.getVideoDecoders();
    private static final List<AudioDecoder> audioDecoders = DecoderCapabilities.getAudioDecoders();
    private static final List<VideoEncoderCap> videoEncoders = EncoderCapabilities.getVideoEncoders();
    private static final List<AudioEncoderCap> audioEncoders = EncoderCapabilities.getAudioEncoders();
    private static final HashMap<Integer, String> videoEncoderMap = new HashMap<Integer, String>();
    private static final HashMap<Integer, String> audioEncoderMap = new HashMap<Integer, String>();

    static {
        initAudioEncoderMap();
        initVideoEncoderMap();
    };

    public static List<VideoEncoderCap> getVideoEncoders() {
        return videoEncoders;
    }

    public static List<AudioEncoderCap> getAudioEncoders() {
        return audioEncoders;
    }

    public static String getDeviceType() {
        // push all the property into one big table
        String s;
        s = SystemProperties.get("ro.product.name");
        return s;
    }

    public static boolean getWMAEnable() {
        for (AudioDecoder decoder: audioDecoders) {
            if (decoder == AudioDecoder.AUDIO_DECODER_WMA) {
                return true;
            }
        }
        return false;
    }

    public static boolean getWMVEnable(){
        for (VideoDecoder decoder: videoDecoders) {
            if (decoder == VideoDecoder.VIDEO_DECODER_WMV) {
                return true;
            }
        }
        return false;
    }

    public static String getVideoCodecName(int videoEncoder) {
        if (videoEncoder != MediaRecorder.VideoEncoder.H263 &&
            videoEncoder != MediaRecorder.VideoEncoder.H264 &&
            videoEncoder != MediaRecorder.VideoEncoder.MPEG_4_SP) {
            throw new IllegalArgumentException("Unsupported video encoder " + videoEncoder);
        }
        return videoEncoderMap.get(videoEncoder);
    }

    public static String getAudioCodecName(int audioEncoder) {
        if (audioEncoder != MediaRecorder.AudioEncoder.AMR_NB &&
            audioEncoder != MediaRecorder.AudioEncoder.AMR_WB &&
            audioEncoder != MediaRecorder.AudioEncoder.AAC &&
            audioEncoder != MediaRecorder.AudioEncoder.HE_AAC) {
            throw new IllegalArgumentException("Unsupported audio encodeer " + audioEncoder);
        }
        return audioEncoderMap.get(audioEncoder);
    }

    public static int getMinFrameRateForCodec(int codec) {
        return getMinOrMaxFrameRateForCodec(codec, false);
    }

    public static int getMaxFrameRateForCodec(int codec) {
        return getMinOrMaxFrameRateForCodec(codec, true);
    }

    private static int getMinOrMaxFrameRateForCodec(int codec, boolean max) {
        for (VideoEncoderCap cap: videoEncoders) {
            if (cap.mCodec == codec) {
                if (max) return cap.mMaxFrameRate;
                else return cap.mMinFrameRate;
            }
        }
        // Should never reach here
        throw new IllegalArgumentException("Unsupported video codec " + codec);
    }

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

    private static void initVideoEncoderMap() {
        // video encoders
        videoEncoderMap.put(MediaRecorder.VideoEncoder.H263, "h263");
        videoEncoderMap.put(MediaRecorder.VideoEncoder.H264, "h264");
        videoEncoderMap.put(MediaRecorder.VideoEncoder.MPEG_4_SP, "m4v");
    }

    private static void initAudioEncoderMap() {
        // audio encoders
        audioEncoderMap.put(MediaRecorder.AudioEncoder.AMR_NB, "amrnb");
        audioEncoderMap.put(MediaRecorder.AudioEncoder.AMR_WB, "amrwb");
        audioEncoderMap.put(MediaRecorder.AudioEncoder.AAC, "aac");
        audioEncoderMap.put(MediaRecorder.AudioEncoder.HE_AAC, "heaac");
    }
}