android.media.MediaFormat源码实例Demo-ICode联盟

类android.media.MediaFormat源码实例Demo

下面列出了怎么用android.media.MediaFormat的API类实例代码及写法，或者点击链接到github查看源代码。

源代码1 项目： pause-resume-video-recording 文件： MoviePlayer.java

/**
 * 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;
}

源代码2 项目： Telegram 文件： MediaCodecAudioRenderer.java

@Override
protected void configureCodec(
    MediaCodecInfo codecInfo,
    MediaCodec codec,
    Format format,
    MediaCrypto crypto,
    float codecOperatingRate) {
  codecMaxInputSize = getCodecMaxInputSize(codecInfo, format, getStreamFormats());
  codecNeedsDiscardChannelsWorkaround = codecNeedsDiscardChannelsWorkaround(codecInfo.name);
  codecNeedsEosBufferTimestampWorkaround = codecNeedsEosBufferTimestampWorkaround(codecInfo.name);
  passthroughEnabled = codecInfo.passthrough;
  String codecMimeType = passthroughEnabled ? MimeTypes.AUDIO_RAW : codecInfo.codecMimeType;
  MediaFormat mediaFormat =
      getMediaFormat(format, codecMimeType, codecMaxInputSize, codecOperatingRate);
  codec.configure(mediaFormat, /* surface= */ null, crypto, /* flags= */ 0);
  if (passthroughEnabled) {
    // Store the input MIME type if we're using the passthrough codec.
    passthroughMediaFormat = mediaFormat;
    passthroughMediaFormat.setString(MediaFormat.KEY_MIME, format.sampleMimeType);
  } else {
    passthroughMediaFormat = null;
  }
}

源代码3 项目： kickflip-android-sdk 文件： VideoEncoderCore.java

/**
 * Configures encoder and muxer state, and prepares the input Surface.
 */
public VideoEncoderCore(int width, int height, int bitRate, Muxer muxer) throws IOException {
    mMuxer = muxer;
    mBufferInfo = new MediaCodec.BufferInfo();

    MediaFormat format = MediaFormat.createVideoFormat(MIME_TYPE, width, height);

    // Set some properties.  Failing to specify some of these can cause the MediaCodec
    // configure() call to throw an unhelpful exception.
    format.setInteger(MediaFormat.KEY_COLOR_FORMAT,
            MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface);
    format.setInteger(MediaFormat.KEY_BIT_RATE, bitRate);
    format.setInteger(MediaFormat.KEY_FRAME_RATE, FRAME_RATE);
    format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, IFRAME_INTERVAL);
    if (VERBOSE) Log.d(TAG, "format: " + format);

    // Create a MediaCodec encoder, and configure it with our format.  Get a Surface
    // we can use for input and wrap it with a class that handles the EGL work.
    mEncoder = MediaCodec.createEncoderByType(MIME_TYPE);
    mEncoder.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
    mInputSurface = mEncoder.createInputSurface();
    mEncoder.start();

    mTrackIndex = -1;
}

源代码4 项目： MediaPlayer-Extended 文件： DashMediaExtractor.java

@Override
public MediaFormat getTrackFormat(int index) {
    MediaFormat mediaFormat = super.getTrackFormat(index);
    if(mMp4Mode) {
        /* An MP4 that has been converted from a fragmented to an unfragmented container
         * through the isoparser library does only contain the current segment's runtime. To
         * return the total runtime, we take the value from the MPD instead.
         */
        mediaFormat.setLong(MediaFormat.KEY_DURATION, mMPD.mediaPresentationDurationUs);
    }
    if(mediaFormat.getString(MediaFormat.KEY_MIME).startsWith("video/")) {
        // Return the display aspect ratio as defined in the MPD (can be different from the encoded video size)
        mediaFormat.setFloat(MEDIA_FORMAT_EXTENSION_KEY_DAR,
                mAdaptationSet.hasPAR() ? mAdaptationSet.par : mRepresentation.calculatePAR());
    }
    return mediaFormat;
}

源代码5 项目： Android-MediaCodec-Examples 文件： ExtractMpegFramesTest.java

/**
 * Selects the video track, if any.
 *
 * @return the track index, or -1 if no video track is found.
 */
private 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;
}

源代码6 项目： APlayer 文件： Util.java

/**
 * 获得歌曲格式
 */
public static String getType(String mimeType) {
  if (mimeType.equals(MediaFormat.MIMETYPE_AUDIO_MPEG)) {
    return "mp3";
  } else if (mimeType.equals(MediaFormat.MIMETYPE_AUDIO_FLAC)) {
    return "flac";
  } else if (mimeType.equals(MediaFormat.MIMETYPE_AUDIO_AAC)) {
    return "aac";
  } else if (mimeType.contains("ape")) {
    return "ape";
  } else {
    try {
      if (mimeType.contains("audio/")) {
        return mimeType.substring(6, mimeType.length() - 1);
      } else {
        return mimeType;
      }
    } catch (Exception e) {
      return mimeType;
    }
  }
}

源代码7 项目： SimpleVideoEdit 文件： TranscodeVideoUtil.java

/**
 * Creates an encoder for the given format using the specified codec, taking input from a
 * surface.
 *
 * <p>The surface to use as input is stored in the given reference.
 *
 * @param codecName of the codec to use
 * @param format of the stream to be produced
 * @param surfaceReference to store the surface to use as input
 */
private MediaCodec createVideoEncoder(
        String codecName,
        MediaFormat format,
        AtomicReference<Surface> surfaceReference) {
    try {
        MediaCodec encoder = MediaCodec.createByCodecName(codecName);
        encoder.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
        // Must be called before start() is.
        surfaceReference.set(encoder.createInputSurface());
        encoder.start();
        return encoder;
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;
}

源代码8 项目： deltachat-android 文件： AudioCodec.java

private MediaCodec createMediaCodec(Context context, int bufferSize) throws IOException {
  MediaCodec  mediaCodec  = MediaCodec.createEncoderByType("audio/mp4a-latm");
  MediaFormat mediaFormat = new MediaFormat();

  mediaFormat.setString(MediaFormat.KEY_MIME, "audio/mp4a-latm");
  mediaFormat.setInteger(MediaFormat.KEY_SAMPLE_RATE, SAMPLE_RATE);
  mediaFormat.setInteger(MediaFormat.KEY_CHANNEL_COUNT, CHANNELS);
  mediaFormat.setInteger(MediaFormat.KEY_MAX_INPUT_SIZE, bufferSize);
  mediaFormat.setInteger(MediaFormat.KEY_BIT_RATE, Prefs.isHardCompressionEnabled(context)? BIT_RATE_WORSE : BIT_RATE_BALANCED);
  mediaFormat.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectLC);

  try {
    mediaCodec.configure(mediaFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
  } catch (Exception e) {
    Log.w(TAG, e);
    mediaCodec.release();
    throw new IOException(e);
  }

  return mediaCodec;
}

源代码9 项目： phoenix 文件： MediaExtractorUtils.java

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;
}

源代码10 项目： VideoProcessor 文件： AudioUtil.java

/**
 * 调整aac音量
 *
 * @param volume [0,100]
 * @throws IOException
 */
public static void adjustAacVolume(Context context, VideoProcessor.MediaSource aacSource, String outPath, int volume
        , @Nullable VideoProgressListener listener) throws IOException {
    String name = "temp_aac_"+System.currentTimeMillis();
    File pcmFile = new File(VideoUtil.getVideoCacheDir(context), name + ".pcm");
    File pcmFile2 = new File(VideoUtil.getVideoCacheDir(context), name + "_2.pcm");
    File wavFile = new File(VideoUtil.getVideoCacheDir(context), name + ".wav");

    AudioUtil.decodeToPCM(aacSource, pcmFile.getAbsolutePath(), null, null);
    AudioUtil.adjustPcmVolume(pcmFile.getAbsolutePath(), pcmFile2.getAbsolutePath(), volume);
    MediaExtractor extractor = new MediaExtractor();
    aacSource.setDataSource(extractor);
    int trackIndex = VideoUtil.selectTrack(extractor, true);
    MediaFormat aacFormat = extractor.getTrackFormat(trackIndex);
    int sampleRate = aacFormat.getInteger(MediaFormat.KEY_SAMPLE_RATE);
    int oriChannelCount = aacFormat.getInteger(MediaFormat.KEY_CHANNEL_COUNT);
    int channelConfig = AudioFormat.CHANNEL_IN_MONO;
    if (oriChannelCount == 2) {
        channelConfig = AudioFormat.CHANNEL_IN_STEREO;
    }
    new PcmToWavUtil(sampleRate, channelConfig, oriChannelCount, AudioFormat.ENCODING_PCM_16BIT).pcmToWav(pcmFile2.getAbsolutePath(), wavFile.getAbsolutePath());
    AudioUtil.encodeWAVToAAC(wavFile.getPath(), outPath, aacFormat, listener);
}

源代码11 项目： LiTr 文件： VideoTrackTranscoderShould.java

@Test
public void addTrackWhenEncoderMediaFormatReceived() throws Exception {
    videoTrackTranscoder.lastExtractFrameResult = TrackTranscoder.RESULT_EOS_REACHED;
    videoTrackTranscoder.lastDecodeFrameResult = TrackTranscoder.RESULT_EOS_REACHED;
    videoTrackTranscoder.lastEncodeFrameResult = TrackTranscoder.RESULT_FRAME_PROCESSED;

    MediaFormat encoderMediaFormat = new MediaFormat();
    doReturn(MediaCodec.INFO_OUTPUT_FORMAT_CHANGED).when(encoder).dequeueOutputFrame(anyLong());
    doReturn(encoderMediaFormat).when(encoder).getOutputFormat();
    doReturn(VIDEO_TRACK).when(mediaTarget).addTrack(any(MediaFormat.class), anyInt());

    int result = videoTrackTranscoder.processNextFrame();

    ArgumentCaptor<MediaFormat> mediaFormatArgumentCaptor = ArgumentCaptor.forClass(MediaFormat.class);
    verify(mediaTarget).addTrack(mediaFormatArgumentCaptor.capture(), eq(VIDEO_TRACK));
    assertThat(mediaFormatArgumentCaptor.getValue(), is(encoderMediaFormat));

    assertThat(videoTrackTranscoder.targetTrack, is(VIDEO_TRACK));
    assertThat(result, is(TrackTranscoder.RESULT_OUTPUT_MEDIA_FORMAT_CHANGED));
}

源代码12 项目： android-transcoder 文件： MediaExtractorUtils.java

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;
}

源代码13 项目： bcm-android 文件： AudioCodec.java

private MediaCodec createMediaCodec(int bufferSize) throws IOException {
    MediaCodec mediaCodec = MediaCodec.createEncoderByType("audio/mp4a-latm");
    MediaFormat mediaFormat = new MediaFormat();

    mediaFormat.setString(MediaFormat.KEY_MIME, "audio/mp4a-latm");
    mediaFormat.setInteger(MediaFormat.KEY_SAMPLE_RATE, SAMPLE_RATE);
    mediaFormat.setInteger(MediaFormat.KEY_CHANNEL_COUNT, CHANNELS);
    mediaFormat.setInteger(MediaFormat.KEY_MAX_INPUT_SIZE, bufferSize);
    mediaFormat.setInteger(MediaFormat.KEY_BIT_RATE, BIT_RATE);
    mediaFormat.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectLC);

    try {
        mediaCodec.configure(mediaFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
    } catch (Exception e) {
        Log.w(TAG, e);
        mediaCodec.release();
        throw new IOException(e);
    }

    return mediaCodec;
}

源代码14 项目： AndroidScreenShare 文件： AACEncoder.java

private void init() {
    mBufferInfo = new MediaCodec.BufferInfo();
    try {
        mEncoder = MediaCodec.createEncoderByType(MIME_TYPE);
        MediaFormat mediaFormat = MediaFormat.createAudioFormat(MIME_TYPE,
                sampleRate, channelCount);
        mediaFormat.setInteger(MediaFormat.KEY_BIT_RATE, bitRate);
        mediaFormat.setInteger(MediaFormat.KEY_AAC_PROFILE,
                KEY_AAC_PROFILE);
        mEncoder.configure(mediaFormat, null, null,
                MediaCodec.CONFIGURE_FLAG_ENCODE);
        mEncoder.start();
    } catch (IOException e) {
        e.printStackTrace();
    }
}

源代码15 项目： MultiMediaSample 文件： VideoCodecTask.java

/**
 * 初始化编码器
 */

private void initMediaEncode() {
    getEncodeColor();
    try {
        MediaFormat format = MediaFormat.createVideoFormat(MediaFormat.MIMETYPE_VIDEO_AVC, mDstWidth, mDstHeight);
        format.setInteger(MediaFormat.KEY_BIT_RATE, 1024 * 512);
        format.setInteger(MediaFormat.KEY_FRAME_RATE, 27);
        format.setInteger(MediaFormat.KEY_COLOR_FORMAT, mVideoEncodeColor);
        format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 1);

        mMediaEncode = MediaCodec.createEncoderByType(MediaFormat.MIMETYPE_VIDEO_AVC);
        mMediaEncode.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
    } catch (IOException e) {
        e.printStackTrace();
    }

    if (mMediaEncode == null) {
        Log.e(TAG, "create mMediaEncode failed");
        return;
    }
    mMediaEncode.start();

}

源代码16 项目： TelePlus-Android 文件： MediaCodecAudioRenderer.java

/**
 * Returns the framework {@link MediaFormat} that can be used to configure a {@link MediaCodec}
 * for decoding the given {@link Format} for playback.
 *
 * @param format The format of the media.
 * @param codecMimeType The MIME type handled by the codec.
 * @param codecMaxInputSize The maximum input size supported by the codec.
 * @param codecOperatingRate The codec operating rate, or {@link #CODEC_OPERATING_RATE_UNSET} if
 *     no codec operating rate should be set.
 * @return The framework media format.
 */
@SuppressLint("InlinedApi")
protected MediaFormat getMediaFormat(
    Format format, String codecMimeType, int codecMaxInputSize, float codecOperatingRate) {
  MediaFormat mediaFormat = new MediaFormat();
  // Set format parameters that should always be set.
  mediaFormat.setString(MediaFormat.KEY_MIME, codecMimeType);
  mediaFormat.setInteger(MediaFormat.KEY_CHANNEL_COUNT, format.channelCount);
  mediaFormat.setInteger(MediaFormat.KEY_SAMPLE_RATE, format.sampleRate);
  MediaFormatUtil.setCsdBuffers(mediaFormat, format.initializationData);
  // Set codec max values.
  MediaFormatUtil.maybeSetInteger(mediaFormat, MediaFormat.KEY_MAX_INPUT_SIZE, codecMaxInputSize);
  // Set codec configuration values.
  if (Util.SDK_INT >= 23) {
    mediaFormat.setInteger(MediaFormat.KEY_PRIORITY, 0 /* realtime priority */);
    if (codecOperatingRate != CODEC_OPERATING_RATE_UNSET) {
      mediaFormat.setFloat(MediaFormat.KEY_OPERATING_RATE, codecOperatingRate);
    }
  }
  return mediaFormat;
}

源代码17 项目： Exoplayer_VLC 文件： ExoVlcUtil.java

/**
 * 
 * @param media
 * @param vlcTracks
 * @param lib
 * @return
 */
static com.google.android.exoplayer.TrackInfo[] vlc2exoTracks(long duration,
		org.videolan.libvlc.Media.Track[] vlcTracks, LibVLC lib) {
	com.google.android.exoplayer.TrackInfo[] res = new com.google.android.exoplayer.TrackInfo[vlcTracks.length];
	System.out.println("ExoVlcUtil.vlc2exoTracks() vlcTracks = " + vlcTracks.length);
	// Media.Track
	for (int i = 0; i < res.length; i++) {
		MediaFormat mf = track2mediaFormat(vlcTracks[i]);

		res[i] = new TrackInfo(mf.getString(MediaFormat.KEY_MIME), duration);
		System.out.println("\t track " + i + " mime type =" + mf.getString(MediaFormat.KEY_MIME) + " duration ="
				+ duration);
	}
	/*
	 * System.out.println(">>>> ExoVlcUtil.vlc2exoTracks() vlcTracks.length = "
	 * +vlcTracks.length); long l; for (int i = 0; i < vlcTracks.length;
	 * i++) { org.videolan.libvlc.TrackInfo vt = vlcTracks[i];
	 * System.out.println("\t\t >>>>>Codec("+i+") "+vlcTracks[i].Codec);
	 * res[i] = new TrackInfo( vt.Codec, (l=lib.getLength()) == -1 ?
	 * com.google.android.exoplayer.C.UNKNOWN_TIME_US : l * MS_2_MICRO); }
	 */
	return res;
}

源代码18 项目： cameraMediaCodec 文件： AvcDecoder.java

public int tryConfig(Surface surface, byte[] sps, byte[] pps)
{
	int[] width = new int[1];
	int[] height = new int[1];
	
	AvcUtils.parseSPS(sps, width, height);
	
	mMF = MediaFormat.createVideoFormat(MIME_TYPE, width[0], height[0]);
	
	mMF.setByteBuffer("csd-0", ByteBuffer.wrap(sps));
	mMF.setByteBuffer("csd-1", ByteBuffer.wrap(pps));
	mMF.setInteger(MediaFormat.KEY_MAX_INPUT_SIZE, width[0] * height[0]);
	
	mMC.configure(mMF, surface, null, 0);
	Log.i("AvcDecoder", "Init, configure");
	mStatus = STATUS_IDLE;
	
	return 0;
}

源代码19 项目： Android-Audio-Recorder 文件： Format3GP.java

public Format3GP(EncoderInfo info, File out) {
        MediaFormat format = new MediaFormat();

        // for high bitrate AMR_WB
        {
//            final int kBitRates[] = {6600, 8850, 12650, 14250, 15850, 18250, 19850, 23050, 23850};

//            format.setString(MediaFormat.KEY_MIME, "audio/amr-wb");
//            format.setInteger(MediaFormat.KEY_SAMPLE_RATE, info.sampleRate);
//            format.setInteger(MediaFormat.KEY_CHANNEL_COUNT, info.channels);
//            format.setInteger(MediaFormat.KEY_BIT_RATE, 23850); // set maximum
        }

        // for low bitrate, AMR_NB
        {
//            final int kBitRates[] = {4750, 5150, 5900, 6700, 7400, 7950, 10200, 12200};

            format.setString(MediaFormat.KEY_MIME, "audio/3gpp");
            format.setInteger(MediaFormat.KEY_SAMPLE_RATE, info.sampleRate); // 8000 only supported
            format.setInteger(MediaFormat.KEY_CHANNEL_COUNT, info.channels);
            format.setInteger(MediaFormat.KEY_BIT_RATE, 12200); // set maximum
        }

        create(info, format, out);
    }

源代码20 项目： MediaPlayer-Extended 文件： MediaPlayer.java

public int getDuration() {
    if(mCurrentState.ordinal() <= State.PREPARING.ordinal() && mCurrentState.ordinal() >= State.RELEASING.ordinal()) {
        mCurrentState = State.ERROR;
        throw new IllegalStateException();
    }

    return mVideoFormat != null ? (int)(mVideoFormat.getLong(MediaFormat.KEY_DURATION)/1000) :
            mAudioFormat != null && mAudioFormat.containsKey(MediaFormat.KEY_DURATION) ? (int)(mAudioFormat.getLong(MediaFormat.KEY_DURATION)/1000) : 0;
}

源代码21 项目： libstreaming 文件： EncoderDebugger.java

/**
 * Instantiates and starts the encoder.
 * @throws IOException The encoder cannot be configured
 */
private void configureEncoder() throws IOException  {
	mEncoder = MediaCodec.createByCodecName(mEncoderName);
	MediaFormat mediaFormat = MediaFormat.createVideoFormat(MIME_TYPE, mWidth, mHeight);
	mediaFormat.setInteger(MediaFormat.KEY_BIT_RATE, BITRATE);
	mediaFormat.setInteger(MediaFormat.KEY_FRAME_RATE, FRAMERATE);	
	mediaFormat.setInteger(MediaFormat.KEY_COLOR_FORMAT, mEncoderColorFormat);
	mediaFormat.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 1);
	mEncoder.configure(mediaFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
	mEncoder.start();
}

源代码22 项目： phoenix 文件： ExportPreset960x540Strategy.java

@Override
public MediaFormat createVideoOutputFormat(MediaFormat inputFormat) {
    // TODO: detect non-baseline profile and throw exception
    int width = inputFormat.getInteger(MediaFormat.KEY_WIDTH);
    int height = inputFormat.getInteger(MediaFormat.KEY_HEIGHT);
    MediaFormat outputFormat = MediaFormatPresets.getExportPreset960x540(width, height);
    int outWidth = outputFormat.getInteger(MediaFormat.KEY_WIDTH);
    int outHeight = outputFormat.getInteger(MediaFormat.KEY_HEIGHT);
    Log.d(TAG, String.format("inputFormat: %dx%d => outputFormat: %dx%d", width, height, outWidth, outHeight));
    return outputFormat;
}

源代码23 项目： android-chromium 文件： MediaCodecBridge.java

@CalledByNative
private boolean configureVideo(MediaFormat format, Surface surface, MediaCrypto crypto,
        int flags) {
    try {
        mMediaCodec.configure(format, surface, crypto, flags);
        return true;
    } catch (IllegalStateException e) {
        Log.e(TAG, "Cannot configure the video codec " + e.toString());
    }
    return false;
}

源代码24 项目： AndroidPlayground 文件： MainActivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    findViewById(R.id.mCameraCapture).setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(final View v) {
            startActivity(new Intent(MainActivity.this, CameraCaptureActivity.class));
        }
    });

    TextView tvInfo = (TextView) findViewById(R.id.mTvInfo);

    MediaFormat format = MediaFormat.createVideoFormat(MIME_TYPE, 1080, 720);

    // Set some properties.  Failing to specify some of these can cause the MediaCodec
    // configure() call to throw an unhelpful exception.
    format.setInteger(MediaFormat.KEY_COLOR_FORMAT,
            MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface);
    format.setInteger(MediaFormat.KEY_BIT_RATE, 100000);
    format.setInteger(MediaFormat.KEY_FRAME_RATE, FRAME_RATE);
    format.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, IFRAME_INTERVAL);

    MediaCodecInfo codecInfo = selectCodec(MIME_TYPE);
    MediaCodecInfo.CodecCapabilities capabilities = codecInfo.getCapabilitiesForType(MIME_TYPE);

    tvInfo.setText(
            "MaxSupportedInstances: " + capabilities.getMaxSupportedInstances() + "\n"
    );
}

源代码25 项目： TelePlus-Android 文件： MediaCodecAudioRenderer.java

@Override
protected void onOutputFormatChanged(MediaCodec codec, MediaFormat outputFormat)
    throws ExoPlaybackException {
  @C.Encoding int encoding;
  MediaFormat format;
  if (passthroughMediaFormat != null) {
    encoding = MimeTypes.getEncoding(passthroughMediaFormat.getString(MediaFormat.KEY_MIME));
    format = passthroughMediaFormat;
  } else {
    encoding = pcmEncoding;
    format = outputFormat;
  }
  int channelCount = format.getInteger(MediaFormat.KEY_CHANNEL_COUNT);
  int sampleRate = format.getInteger(MediaFormat.KEY_SAMPLE_RATE);
  int[] channelMap;
  if (codecNeedsDiscardChannelsWorkaround && channelCount == 6 && this.channelCount < 6) {
    channelMap = new int[this.channelCount];
    for (int i = 0; i < this.channelCount; i++) {
      channelMap[i] = i;
    }
  } else {
    channelMap = null;
  }

  try {
    audioSink.configure(encoding, channelCount, sampleRate, 0, channelMap, encoderDelay,
        encoderPadding);
  } catch (AudioSink.ConfigurationException e) {
    throw ExoPlaybackException.createForRenderer(e, getIndex());
  }
}

源代码26 项目： EZFilter 文件： MediaUtil.java

/**
 * 创建音频MediaFormat[aac]
 *
 * @param sampleRate   采样率
 * @param channelMask  声道
 * @param channelCount 声道数
 * @return
 */
public static MediaFormat createAudioFormat(int sampleRate, int channelMask, int channelCount) {
    MediaFormat format = MediaFormat.createAudioFormat(MIME_TYPE_AAC, sampleRate, channelCount);
    format.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectLC);
    // 声道
    format.setInteger(MediaFormat.KEY_CHANNEL_MASK, channelMask);
    // 声道数
    format.setInteger(MediaFormat.KEY_CHANNEL_COUNT, channelCount);
    // 音频bit率
    format.setInteger(MediaFormat.KEY_BIT_RATE, AUDIO_BIT_RATE);
    // 统一设置最大缓冲容量，否则在音频转码时因为大小不一致会报错
    format.setInteger(MediaFormat.KEY_MAX_INPUT_SIZE, BUFFER_SIZE);
    return format;
}

源代码27 项目： TvPlayer 文件： AndroidTrackInfo.java

@TargetApi(Build.VERSION_CODES.KITKAT)
@Override
public IMediaFormat getFormat() {
    if (mTrackInfo == null)
        return null;

    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT)
        return null;

    MediaFormat mediaFormat = mTrackInfo.getFormat();
    if (mediaFormat == null)
        return null;

    return new AndroidMediaFormat(mediaFormat);
}

源代码28 项目： MediaSDK 文件： MediaCodecVideoRenderer.java

@Override
protected void configureCodec(
    MediaCodecInfo codecInfo,
    MediaCodec codec,
    Format format,
    @Nullable MediaCrypto crypto,
    float codecOperatingRate) {
  String codecMimeType = codecInfo.codecMimeType;
  codecMaxValues = getCodecMaxValues(codecInfo, format, getStreamFormats());
  MediaFormat mediaFormat =
      getMediaFormat(
          format,
          codecMimeType,
          codecMaxValues,
          codecOperatingRate,
          deviceNeedsNoPostProcessWorkaround,
          tunnelingAudioSessionId);
  if (surface == null) {
    Assertions.checkState(shouldUseDummySurface(codecInfo));
    if (dummySurface == null) {
      dummySurface = DummySurface.newInstanceV17(context, codecInfo.secure);
    }
    surface = dummySurface;
  }
  codec.configure(mediaFormat, surface, crypto, 0);
  if (Util.SDK_INT >= 23 && tunneling) {
    tunnelingOnFrameRenderedListener = new OnFrameRenderedListenerV23(codec);
  }
}

源代码29 项目： AndroidInstantVideo 文件： StreamPublisher.java

public MediaFormat createAudioMediaFormat() {
    MediaFormat format = MediaFormat.createAudioFormat(audioMIME, samplingRate, 2);
    format.setInteger(MediaFormat.KEY_BIT_RATE, audioBitRate);
    format.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectLC);
    format.setInteger(MediaFormat.KEY_MAX_INPUT_SIZE, audioBufferSize);

    return format;
}

源代码30 项目： CameraV 文件： AACHelper.java

public boolean setEncoder(int sampleRate, int channels, int bitRate) throws Exception
{
    encoder = MediaCodec.createEncoderByType("audio/mp4a-latm");
    MediaFormat format = new MediaFormat();
    format.setString(MediaFormat.KEY_MIME, "audio/mp4a-latm");
    format.setInteger(MediaFormat.KEY_CHANNEL_COUNT, channels);
    format.setInteger(MediaFormat.KEY_SAMPLE_RATE, sampleRate);
    format.setInteger(MediaFormat.KEY_BIT_RATE, bitRate * 1024);//AAC-HE 64kbps
    format.setInteger(MediaFormat.KEY_AAC_PROFILE, MediaCodecInfo.CodecProfileLevel.AACObjectHE);
    encoder.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
    
    initAudioRecord(sampleRate);
    
    return true;
}

类所在包

android.media

类方法

setInteger ( )

getInteger ( )

createVideoFormat ( )

getString ( )

createAudioFormat ( )