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Java MediaExtractor类代码示例

本文整理汇总了Java中android.media.MediaExtractor类的典型用法代码示例。如果您正苦于以下问题：Java MediaExtractor类的具体用法？Java MediaExtractor怎么用？Java MediaExtractor使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。


MediaExtractor类属于android.media包，在下文中一共展示了MediaExtractor类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: getFirstVideoAndAudioTrack

import android.media.MediaExtractor; //导入依赖的package包/类
public static TrackResult getFirstVideoAndAudioTrack(MediaExtractor extractor) {
    TrackResult trackResult = new TrackResult();
    trackResult.mVideoTrackIndex = -1;
    trackResult.mAudioTrackIndex = -1;
    int trackCount = extractor.getTrackCount();
    for (int i = 0; i < trackCount; i++) {
        MediaFormat format = extractor.getTrackFormat(i);
        String mime = format.getString(MediaFormat.KEY_MIME);
        if (trackResult.mVideoTrackIndex < 0 && mime.startsWith("video/")) {
            trackResult.mVideoTrackIndex = i;
            trackResult.mVideoTrackMime = mime;
            trackResult.mVideoTrackFormat = format;
        } else if (trackResult.mAudioTrackIndex < 0 && mime.startsWith("audio/")) {
            trackResult.mAudioTrackIndex = i;
            trackResult.mAudioTrackMime = mime;
            trackResult.mAudioTrackFormat = format;
        }
        if (trackResult.mVideoTrackIndex >= 0 && trackResult.mAudioTrackIndex >= 0) break;
    }
    if (trackResult.mVideoTrackIndex < 0 || trackResult.mAudioTrackIndex < 0) {
        throw new IllegalArgumentException("extractor does not contain video and/or audio tracks.");
    }
    return trackResult;
}
开发者ID:SavorGit，项目名称:Hotspot-master-devp，代码行数:25，代码来源:MediaExtractorUtils.java

示例2: startSeeking

import android.media.MediaExtractor; //导入依赖的package包/类
@Override
public void startSeeking() throws IOException {
    super.startSeeking();
    Log.d(TAG, "start seeking state is: " + mState);
    if (mState == STATE_SEEKING)
        return;
    prepare();
    setState(STATE_SEEKING);
    mInputDone = mOutputDone = false;
    mSeekDirection = SEEK_DIRECTION_FORWARD;
    mMediaCodec.start();
    mSeekTargetTime = mExtractor.getSampleTime();
    mExtractor.seekTo(mSeekTargetTime, MediaExtractor.SEEK_TO_PREVIOUS_SYNC);
    mIsSeeking = true;
    new Thread(mSeekRunnable, getClass().getSimpleName()).start();
}
开发者ID:Tai-Kimura，项目名称:VideoApplication，代码行数:17，代码来源:VideoDecoder.java

示例3: selectTrack

import android.media.MediaExtractor; //导入依赖的package包/类
private MediaFormat selectTrack(MediaExtractor extractor) {
    int trackCount = extractor.getTrackCount();
    Log.d(TAG, "trackCount :" + trackCount);

    MediaFormat format;
    for (int i = 0; i < trackCount; i++) {
        extractor.selectTrack(i);
        format = extractor.getTrackFormat(i);
        Log.d(TAG, "Track media format :" + format.toString());

        String mime = format.getString(MediaFormat.KEY_MIME);
        if (mime.startsWith("video/")) {
            return format;
        }
    }

    return null;
}
开发者ID:ficklerobot，项目名称:grid-video-viewer，代码行数:19，代码来源:DecodeThread.java

示例4: selectTrack

import android.media.MediaExtractor; //导入依赖的package包/类
@TargetApi(16)
private int selectTrack(MediaExtractor extractor, boolean audio) {
    int numTracks = extractor.getTrackCount();
    for (int i = 0; i < numTracks; i++) {
        MediaFormat format = extractor.getTrackFormat(i);
        String mime = format.getString(MediaFormat.KEY_MIME);
        if (audio) {
            if (mime.startsWith("audio/")) {
                return i;
            }
        } else {
            if (mime.startsWith("video/")) {
                return i;
            }
        }
    }
    return -5;
}
开发者ID:MLNO，项目名称:airgram，代码行数:19，代码来源:MediaController.java

示例5: drainExtractor

import android.media.MediaExtractor; //导入依赖的package包/类
private int drainExtractor(long timeoutUs) {
    if (mIsExtractorEOS) return DRAIN_STATE_NONE;
    int trackIndex = mExtractor.getSampleTrackIndex();
    if (trackIndex >= 0 && trackIndex != mTrackIndex) {
        return DRAIN_STATE_NONE;
    }

    final int result = mDecoder.dequeueInputBuffer(timeoutUs);
    if (result < 0) return DRAIN_STATE_NONE;
    if (trackIndex < 0) {
        mIsExtractorEOS = true;
        mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
        return DRAIN_STATE_NONE;
    }

    final int sampleSize = mExtractor.readSampleData(mDecoderBuffers.getInputBuffer(result), 0);
    final boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
    mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
    mExtractor.advance();
    return DRAIN_STATE_CONSUMED;
}
开发者ID:SavorGit，项目名称:Hotspot-master-devp，代码行数:22，代码来源:AudioTrackTranscoder.java

示例6: drainExtractor

import android.media.MediaExtractor; //导入依赖的package包/类
private int drainExtractor(long timeoutUs) {
    if (mIsExtractorEOS) return DRAIN_STATE_NONE;
    int trackIndex = mExtractor.getSampleTrackIndex();
    if (trackIndex >= 0 && trackIndex != mTrackIndex) {
        return DRAIN_STATE_NONE;
    }
    int result = mDecoder.dequeueInputBuffer(timeoutUs);
    if (result < 0) return DRAIN_STATE_NONE;
    if (trackIndex < 0) {
        mIsExtractorEOS = true;
        mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
        return DRAIN_STATE_NONE;
    }
    int sampleSize = mExtractor.readSampleData(mDecoderInputBuffers[result], 0);
    boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
    mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
    mExtractor.advance();
    return DRAIN_STATE_CONSUMED;
}
开发者ID:SavorGit，项目名称:Hotspot-master-devp，代码行数:20，代码来源:VideoTrackTranscoder.java

示例7: seekTo

import android.media.MediaExtractor; //导入依赖的package包/类
public void seekTo(long presentationTime) {
    synchronized (mDecoderSync) {
        if (mIsSeeking)
            return;
        Log.d(TAG, "seek diff:" + (presentationTime - mSeekTargetTime));
        mInputDone = mOutputDone = false;
        mSeekDirection = presentationTime >= mSeekTargetTime ? SEEK_DIRECTION_FORWARD : SEEK_DIRECTION_BACKWARD;
        if ((mSeekDirection == SEEK_DIRECTION_BACKWARD) || mSeekDirection == SEEK_DIRECTION_FORWARD && Math.abs(presentationTime - mLastSyncFrameTime) > mMaximumDifference) {
            mExtractor.seekTo(presentationTime, MediaExtractor.SEEK_TO_PREVIOUS_SYNC);
            mLastSyncFrameTime = mExtractor.getSampleTime();
        }
        mSeekTargetTime = presentationTime;
        mIsSeeking = true;
        mDecoderSync.notifyAll();
    }
}
开发者ID:Tai-Kimura，项目名称:VideoApplication，代码行数:17，代码来源:VideoDecoder.java

示例8: readyExtractor

import android.media.MediaExtractor; //导入依赖的package包/类
/**
 * 現在のfilePathを使ってExtractorを作成する
 */
private boolean readyExtractor(String filePath) {
    boolean isOk = false;
    mBufferinfo = new MediaCodec.BufferInfo();

    try {
        mExtractor = new MediaExtractor();
        mExtractor.setDataSource(filePath);
        isOk = true;

    } catch (IOException e) {
        e.printStackTrace();
        Log.d(TAG, "Failed to setDataSource id:" + id);
        mVideoData = null;
    }

    return isOk;
}
开发者ID:ficklerobot，项目名称:grid-video-viewer，代码行数:21，代码来源:DecodeThread.java

示例9: selectTrack

import android.media.MediaExtractor; //导入依赖的package包/类
/**
 * Selects the video track, if any.
 *
 * @return the track index, or -1 if no video track is found.
 */
private static int selectTrack(MediaExtractor extractor) {
    // Select the first video track we find, ignore the rest.
    int numTracks = extractor.getTrackCount();
    for (int i = 0; i < numTracks; i++) {
        MediaFormat format = extractor.getTrackFormat(i);
        String mime = format.getString(MediaFormat.KEY_MIME);
        if (mime.startsWith("video/")) {
            if (VERBOSE) {
                Log.d(TAG, "Extractor selected track " + i + " (" + mime + "): " + format);
            }
            return i;
        }
    }

    return -1;
}
开发者ID:AndyZhu1991，项目名称:grafika，代码行数:22，代码来源:MoviePlayer.java

示例10: initExtractor

import android.media.MediaExtractor; //导入依赖的package包/类
public boolean initExtractor(String filePath) throws IOException {
  decoding = false;
  audioExtractor = new MediaExtractor();
  audioExtractor.setDataSource(filePath);
  for (int i = 0; i < audioExtractor.getTrackCount() && !mime.startsWith("audio/"); i++) {
    audioFormat = audioExtractor.getTrackFormat(i);
    mime = audioFormat.getString(MediaFormat.KEY_MIME);
    if (mime.startsWith("audio/")) {
      audioExtractor.selectTrack(i);
    } else {
      audioFormat = null;
    }
  }
  if (audioFormat != null && mime.equals("audio/mp4a-latm")) {
    isStereo = (audioFormat.getInteger(MediaFormat.KEY_CHANNEL_COUNT) == 2);
    sampleRate = audioFormat.getInteger(MediaFormat.KEY_SAMPLE_RATE);
    return true;
    //audio decoder not supported
  } else {
    mime = "";
    audioFormat = null;
    return false;
  }
}
开发者ID:pedroSG94，项目名称:rtmp-rtsp-stream-client-java，代码行数:25，代码来源:AudioDecoder.java

示例11: initExtractor

import android.media.MediaExtractor; //导入依赖的package包/类
public boolean initExtractor(String filePath) throws IOException {
  decoding = false;
  videoExtractor = new MediaExtractor();
  videoExtractor.setDataSource(filePath);
  for (int i = 0; i < videoExtractor.getTrackCount() && !mime.startsWith("video/"); i++) {
    videoFormat = videoExtractor.getTrackFormat(i);
    mime = videoFormat.getString(MediaFormat.KEY_MIME);
    if (mime.startsWith("video/")) {
      videoExtractor.selectTrack(i);
    } else {
      videoFormat = null;
    }
  }
  if (videoFormat != null && mime.equals("video/avc")) {
    width = videoFormat.getInteger(MediaFormat.KEY_WIDTH);
    height = videoFormat.getInteger(MediaFormat.KEY_HEIGHT);
    return true;
    //video decoder not supported
  } else {
    mime = "";
    videoFormat = null;
    return false;
  }
}
开发者ID:pedroSG94，项目名称:rtmp-rtsp-stream-client-java，代码行数:25，代码来源:VideoDecoder.java

示例12: drainExtractor

import android.media.MediaExtractor; //导入依赖的package包/类
private int drainExtractor(long timeoutUs) {
    if (mIsExtractorEOS) return DRAIN_STATE_NONE;
    int trackIndex = mExtractor.getSampleTrackIndex();
    if (trackIndex >= 0 && trackIndex != mTrackIndex) {
        return DRAIN_STATE_NONE;
    }

    int result = mDecoder.dequeueInputBuffer(timeoutUs);
    if (result < 0) return DRAIN_STATE_NONE;
    if (trackIndex < 0) {
        mIsExtractorEOS = true;
        mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
        return DRAIN_STATE_NONE;
    }

    int sampleSize = mExtractor.readSampleData(MediaUtil.getInputBuffer(mDecoder, result), 0);
    boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
    mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
    mExtractor.advance();
    return DRAIN_STATE_CONSUMED;
}
开发者ID:uestccokey，项目名称:EZFilter，代码行数:22，代码来源:AudioTrackTranscoder.java

示例13: drainExtractor

import android.media.MediaExtractor; //导入依赖的package包/类
private int drainExtractor(long timeoutUs) {
    if (mIsExtractorEOS) return DRAIN_STATE_NONE;
    int trackIndex = mExtractor.getSampleTrackIndex();
    if (trackIndex >= 0 && trackIndex != mTrackIndex) {
        return DRAIN_STATE_NONE;
    }

    int result = mDecoder.dequeueInputBuffer(timeoutUs);
    if (result < 0) return DRAIN_STATE_NONE;
    if (trackIndex < 0) {
        mIsExtractorEOS = true;
        mDecoder.queueInputBuffer(result, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
        return DRAIN_STATE_NONE;
    }

    int sampleSize = mExtractor.readSampleData(mDecoderInputBuffers[result], 0);
    boolean isKeyFrame = (mExtractor.getSampleFlags() & MediaExtractor.SAMPLE_FLAG_SYNC) != 0;
    mDecoder.queueInputBuffer(result, 0, sampleSize, mExtractor.getSampleTime(), isKeyFrame ? MediaCodec.BUFFER_FLAG_SYNC_FRAME : 0);
    mExtractor.advance();
    return DRAIN_STATE_CONSUMED;
}
开发者ID:uestccokey，项目名称:EZFilter，代码行数:22，代码来源:VideoTrackTranscoder.java

示例14: retrieveFrameRate

import android.media.MediaExtractor; //导入依赖的package包/类
public int retrieveFrameRate() {
    MediaExtractor extractor = new MediaExtractor();
    int frameRate = -1;
    try {
        //Adjust data source as per the requirement if file, URI, etc.
        extractor.setDataSource(getPath());
        int numTracks = extractor.getTrackCount();
        for (int i = 0; i < numTracks; i++) {
            MediaFormat format = extractor.getTrackFormat(i);
            if (format.containsKey(MediaFormat.KEY_FRAME_RATE)) {
                frameRate = format.getInteger(MediaFormat.KEY_FRAME_RATE);
            }
        }
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        //Release stuff
        extractor.release();
    }
    return frameRate;
}
开发者ID:kollerlukas，项目名称:Camera-Roll-Android-App，代码行数:22，代码来源:Video.java

示例15: getDuration

import android.media.MediaExtractor; //导入依赖的package包/类
/**
 * 获取视频信息
 *
 * @param url
 * @return
 */
public static long getDuration(String url) {
	try {
		MediaExtractor mediaExtractor = new MediaExtractor();
		mediaExtractor.setDataSource(url);
		int videoExt = TrackUtils.selectVideoTrack(mediaExtractor);
		if(videoExt == -1){
			videoExt = TrackUtils.selectAudioTrack(mediaExtractor);
			if(videoExt == -1){
				return 0;
			}
		}
		MediaFormat mediaFormat = mediaExtractor.getTrackFormat(videoExt);
		long res = mediaFormat.containsKey(MediaFormat.KEY_DURATION) ? mediaFormat.getLong(MediaFormat.KEY_DURATION) : 0;//时长
		mediaExtractor.release();
		return res;
	} catch (Exception e) {
		return 0;
	}
}
开发者ID:yangjie10930，项目名称:EpMedia，代码行数:26，代码来源:VideoUitls.java


注：本文中的android.media.MediaExtractor类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。