Java MediaCodecUtil类代码示例

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
@TargetApi(18)
@SuppressWarnings("ResourceType")
private static boolean isL1WidevineAvailable(String videoMimeType) {
  try {
    // Force L3 if secure decoder is not available.
    if (MediaCodecUtil.getDecoderInfo(videoMimeType, true) == null) {
      return false;
    }

    MediaDrm mediaDrm = new MediaDrm(WIDEVINE_UUID);
    String securityProperty = mediaDrm.getPropertyString(SECURITY_LEVEL_PROPERTY);
    mediaDrm.release();
    return WIDEVINE_SECURITY_LEVEL_1.equals(securityProperty);
  } catch (DecoderQueryException | UnsupportedSchemeException e) {
    throw new IllegalStateException(e);
  }
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
@SuppressWarnings("ResourceType")
public static boolean isL1WidevineAvailable(String mimeType) {
  if (Util.SDK_INT >= 18) {
    try {
      // Force L3 if secure decoder is not available.
      if (MediaCodecUtil.getDecoderInfo(mimeType, true) == null) {
        return false;
      }
      MediaDrm mediaDrm = MediaDrmBuilder.build();
      String securityProperty = mediaDrm.getPropertyString(SECURITY_LEVEL_PROPERTY);
      mediaDrm.release();
      return WIDEVINE_SECURITY_LEVEL_1.equals(securityProperty);
    } catch (MediaCodecUtil.DecoderQueryException e) {
      throw new IllegalStateException(e);
    }
  }
  return false;
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
@Override
public void onPlayerError(ExoPlaybackException e) {
    String errorString = null;
    if (e.type == ExoPlaybackException.TYPE_RENDERER) {
        Exception cause = e.getRendererException();
        if (cause instanceof MediaCodecRenderer.DecoderInitializationException) {
            // Special case for decoder initialization failures.
            MediaCodecRenderer.DecoderInitializationException decoderInitializationException =
                    (MediaCodecRenderer.DecoderInitializationException) cause;
            if (decoderInitializationException.decoderName == null) {
                if (decoderInitializationException.getCause() instanceof MediaCodecUtil.DecoderQueryException) {
                    errorString = getResources().getString(R.string.error_querying_decoders);
                } else if (decoderInitializationException.secureDecoderRequired) {
                    errorString = getResources().getString(R.string.error_no_secure_decoder,
                            decoderInitializationException.mimeType);
                } else {
                    errorString = getResources().getString(R.string.error_no_decoder,
                            decoderInitializationException.mimeType);
                }
            } else {
                errorString = getResources().getString(R.string.error_instantiating_decoder,
                        decoderInitializationException.decoderName);
            }
        }
    }
    if (errorString != null) {
        eventEmitter.error(errorString, e);
    }
    playerNeedsSource = true;
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
private static boolean shouldSkipAdaptiveTest(String mimeType) throws DecoderQueryException {
  MediaCodecInfo decoderInfo = MediaCodecUtil.getDecoderInfo(mimeType, false);
  assertNotNull(decoderInfo);
  if (decoderInfo.adaptive) {
    return false;
  }
  assertTrue(Util.SDK_INT < 21);
  return true;
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
/**
 * Called when an error occurs. The playback state will transition to {@link ExoPlayer#STATE_IDLE}
 * immediately after this method is called. The player instance can still be used, and
 * {@link #release()} must still be called on the player should it no longer be required.
 *
 * @param e The error.
 */
@Override
public void onPlayerError(ExoPlaybackException e) {
    MediaError error = null;
    if (e == null) {
        error = new MediaError(MediaError.ERROR_UNKNOWN);
    } else {
        if (e.type == ExoPlaybackException.TYPE_RENDERER) {
            Exception cause = e.getRendererException();
            if (cause instanceof MediaCodecRenderer.DecoderInitializationException) {
                // Special case for decoder initialization failures.
                MediaCodecRenderer.DecoderInitializationException decoderInitializationException =
                        (MediaCodecRenderer.DecoderInitializationException) cause;
                if (decoderInitializationException.decoderName == null) {
                    if (decoderInitializationException.getCause() instanceof MediaCodecUtil.DecoderQueryException) {
                        error = new MediaError(MediaError.EXO_ERROR_QUERYING_DECODERS);
                    } else if (decoderInitializationException.secureDecoderRequired) {
                        error = new MediaError(MediaError.EXO_ERROR_NO_SECURE_DECODER);
                    } else {
                        error = new MediaError(MediaError.EXO_ERROR_NO_DECODER);
                    }
                } else {
                    error = new MediaError(MediaError.EXO_ERROR_INSTANTIATING_DECODER);
                }
            }
        }
    }

    if (error == null) {
        error = new MediaError(MediaError.ERROR_UNKNOWN);
    }
    notifyOnError(error);
    PlayerLog.d(TAG, "onPlayerError   " + error.toString());
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
@Override
protected int supportsFormat(MediaCodecSelector mediaCodecSelector, Format format)
    throws DecoderQueryException {
  String mimeType = format.sampleMimeType;
  if (!MimeTypes.isVideo(mimeType)) {
    return FORMAT_UNSUPPORTED_TYPE;
  }
  boolean requiresSecureDecryption = false;
  DrmInitData drmInitData = format.drmInitData;
  if (drmInitData != null) {
    for (int i = 0; i < drmInitData.schemeDataCount; i++) {
      requiresSecureDecryption |= drmInitData.get(i).requiresSecureDecryption;
    }
  }
  MediaCodecInfo decoderInfo = mediaCodecSelector.getDecoderInfo(mimeType,
      requiresSecureDecryption);
  if (decoderInfo == null) {
    return FORMAT_UNSUPPORTED_SUBTYPE;
  }

  boolean decoderCapable = decoderInfo.isCodecSupported(format.codecs);
  if (decoderCapable && format.width > 0 && format.height > 0) {
    if (Util.SDK_INT >= 21) {
      decoderCapable = decoderInfo.isVideoSizeAndRateSupportedV21(format.width, format.height,
          format.frameRate);
    } else {
      decoderCapable = format.width * format.height <= MediaCodecUtil.maxH264DecodableFrameSize();
      if (!decoderCapable) {
        Log.d(TAG, "FalseCheck [legacyFrameSize, " + format.width + "x" + format.height + "] ["
            + Util.DEVICE_DEBUG_INFO + "]");
      }
    }
  }

  int adaptiveSupport = decoderInfo.adaptive ? ADAPTIVE_SEAMLESS : ADAPTIVE_NOT_SEAMLESS;
  int tunnelingSupport = decoderInfo.tunneling ? TUNNELING_SUPPORTED : TUNNELING_NOT_SUPPORTED;
  int formatSupport = decoderCapable ? FORMAT_HANDLED : FORMAT_EXCEEDS_CAPABILITIES;
  return adaptiveSupport | tunnelingSupport | formatSupport;
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
/**
 * Returns a maximum video size to use when configuring a codec for {@code format} in a way
 * that will allow possible adaptation to other compatible formats that are expected to have the
 * same aspect ratio, but whose sizes are unknown.
 *
 * @param codecInfo Information about the {@link MediaCodec} being configured.
 * @param format The format for which the codec is being configured.
 * @return The maximum video size to use, or null if the size of {@code format} should be used.
 * @throws DecoderQueryException If an error occurs querying {@code codecInfo}.
 */
private static Point getCodecMaxSize(MediaCodecInfo codecInfo, Format format)
    throws DecoderQueryException {
  boolean isVerticalVideo = format.height > format.width;
  int formatLongEdgePx = isVerticalVideo ? format.height : format.width;
  int formatShortEdgePx = isVerticalVideo ? format.width : format.height;
  float aspectRatio = (float) formatShortEdgePx / formatLongEdgePx;
  for (int longEdgePx : STANDARD_LONG_EDGE_VIDEO_PX) {
    int shortEdgePx = (int) (longEdgePx * aspectRatio);
    if (longEdgePx <= formatLongEdgePx || shortEdgePx <= formatShortEdgePx) {
      // Don't return a size not larger than the format for which the codec is being configured.
      return null;
    } else if (Util.SDK_INT >= 21) {
      Point alignedSize = codecInfo.alignVideoSizeV21(isVerticalVideo ? shortEdgePx : longEdgePx,
          isVerticalVideo ? longEdgePx : shortEdgePx);
      float frameRate = format.frameRate;
      if (codecInfo.isVideoSizeAndRateSupportedV21(alignedSize.x, alignedSize.y, frameRate)) {
        return alignedSize;
      }
    } else {
      // Conservatively assume the codec requires 16px width and height alignment.
      longEdgePx = Util.ceilDivide(longEdgePx, 16) * 16;
      shortEdgePx = Util.ceilDivide(shortEdgePx, 16) * 16;
      if (longEdgePx * shortEdgePx <= MediaCodecUtil.maxH264DecodableFrameSize()) {
        return new Point(isVerticalVideo ? shortEdgePx : longEdgePx,
            isVerticalVideo ? longEdgePx : shortEdgePx);
      }
    }
  }
  return null;
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
@Override
public void onPlayerError(ExoPlaybackException e) {
    String errorString = null;
    if (e.type == ExoPlaybackException.TYPE_RENDERER) {
        Exception cause = e.getRendererException();
        if (cause instanceof MediaCodecRenderer.DecoderInitializationException) {
            // Special case for decoder initialization failures.
            MediaCodecRenderer.DecoderInitializationException decoderInitializationException =
                    (MediaCodecRenderer.DecoderInitializationException) cause;
            if (decoderInitializationException.decoderName == null) {
                if (decoderInitializationException.getCause() instanceof MediaCodecUtil.DecoderQueryException) {
                    errorString = context.getString(R.string.error_querying_decoders);
                } else if (decoderInitializationException.secureDecoderRequired) {
                    errorString = context.getString(R.string.error_no_secure_decoder,
                            decoderInitializationException.mimeType);
                } else {
                    errorString = context.getString(R.string.error_no_decoder,
                            decoderInitializationException.mimeType);
                }
            } else {
                errorString = context.getString(R.string.error_instantiating_decoder,
                        decoderInitializationException.decoderName);
            }
        }
    }
    if (errorString != null) {
        showToast(errorString);
    }
    if (isBehindLiveWindow(e)) {
        clearResumePosition();
        initializePlayer();
    } else {
        updateResumePosition();

    }
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
@Test
public void whenContentIsSecure_thenRequiresSecureDecoderIsFalse() throws MediaCodecUtil.DecoderQueryException {
    SecurityDowngradingCodecSelector securityDowngradingCodecSelector = new SecurityDowngradingCodecSelector(internalMediaCodecUtil);

    securityDowngradingCodecSelector.getDecoderInfo(ANY_MIME_TYPE, CONTENT_SECURE);

    ArgumentCaptor<Boolean> argumentCaptor = ArgumentCaptor.forClass(Boolean.class);
    verify(internalMediaCodecUtil).getDecoderInfo(eq(ANY_MIME_TYPE), argumentCaptor.capture());
    assertThat(argumentCaptor.getValue()).isFalse();
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
@Test
public void whenContentIsInsecure_thenRequiresSecureDecoderIsFalse() throws MediaCodecUtil.DecoderQueryException {
    SecurityDowngradingCodecSelector securityDowngradingCodecSelector = new SecurityDowngradingCodecSelector(internalMediaCodecUtil);

    securityDowngradingCodecSelector.getDecoderInfo(ANY_MIME_TYPE, CONTENT_INSECURE);

    ArgumentCaptor<Boolean> argumentCaptor = ArgumentCaptor.forClass(Boolean.class);
    verify(internalMediaCodecUtil).getDecoderInfo(eq(ANY_MIME_TYPE), argumentCaptor.capture());
    assertThat(argumentCaptor.getValue()).isFalse();
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
@Test
public void whenGettingPassthroughDecoderInfo_thenDelegates() throws MediaCodecUtil.DecoderQueryException {
    SecurityDowngradingCodecSelector securityDowngradingCodecSelector = new SecurityDowngradingCodecSelector(internalMediaCodecUtil);

    securityDowngradingCodecSelector.getPassthroughDecoderInfo();

    verify(internalMediaCodecUtil).getPassthroughDecoderInfo();
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
@Override
protected int supportsFormat(MediaCodecSelector mediaCodecSelector, Format format)
    throws DecoderQueryException {
  String mimeType = format.sampleMimeType;
  if (!MimeTypes.isVideo(mimeType)) {
    return FORMAT_UNSUPPORTED_TYPE;
  }
  boolean requiresSecureDecryption = false;
  DrmInitData drmInitData = format.drmInitData;
  if (drmInitData != null) {
    for (int i = 0; i < drmInitData.schemeDataCount; i++) {
      requiresSecureDecryption |= drmInitData.get(i).requiresSecureDecryption;
    }
  }
  MediaCodecInfo decoderInfo = mediaCodecSelector.getDecoderInfo(mimeType,
      requiresSecureDecryption);
  if (decoderInfo == null) {
    return FORMAT_UNSUPPORTED_SUBTYPE;
  }

  boolean decoderCapable = decoderInfo.isCodecSupported(format.codecs);
  if (decoderCapable && format.width > 0 && format.height > 0) {
    if (Util.SDK_INT >= 21) {
      if (format.frameRate > 0) {
        decoderCapable = decoderInfo.isVideoSizeAndRateSupportedV21(format.width, format.height,
            format.frameRate);
      } else {
        decoderCapable = decoderInfo.isVideoSizeSupportedV21(format.width, format.height);
      }
    } else {
      decoderCapable = format.width * format.height <= MediaCodecUtil.maxH264DecodableFrameSize();
    }
  }

  int adaptiveSupport = decoderInfo.adaptive ? ADAPTIVE_SEAMLESS : ADAPTIVE_NOT_SEAMLESS;
  int formatSupport = decoderCapable ? FORMAT_HANDLED : FORMAT_EXCEEDS_CAPABILITIES;
  return adaptiveSupport | formatSupport;
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
public void testDecoderInfoH264() throws DecoderQueryException {
  if (Util.SDK_INT < 16) {
    // Pass.
    return;
  }
  MediaCodecInfo decoderInfo = MediaCodecUtil.getDecoderInfo(MimeTypes.VIDEO_H264, false);
  assertNotNull(decoderInfo);
  assertTrue(Util.SDK_INT < 21 || decoderInfo.adaptive);
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
public void testDecoderInfoH265V24() throws DecoderQueryException {
  if (Util.SDK_INT < 24) {
    // Pass.
    return;
  }
  assertTrue(MediaCodecUtil.getDecoderInfo(MimeTypes.VIDEO_H265, false).adaptive);
}
 

import com.google.android.exoplayer2.mediacodec.MediaCodecUtil; //导入依赖的package包/类
public void testDecoderInfoVP9V24() throws DecoderQueryException {
  if (Util.SDK_INT < 24) {
    // Pass.
    return;
  }
  assertTrue(MediaCodecUtil.getDecoderInfo(MimeTypes.VIDEO_VP9, false).adaptive);
}