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Make MediaCodecVideoRenderer.getCodecMaxInputSize public.

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PiperOrigin-RevId: 439866306
This commit is contained in:
olly 2022-04-06 17:49:01 +01:00 committed by Ian Baker
parent 1da7fd8956
commit eb038265f3
1 changed files with 76 additions and 76 deletions
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152
libraries/exoplayer/src/main/java/androidx/media3/exoplayer/video/MediaCodecVideoRenderer.java
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@ -753,6 +753,82 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
frameReleaseHelper.onPlaybackSpeed(currentPlaybackSpeed);
}
/**
* Returns a maximum input size for a given codec and format.
*
* @param codecInfo Information about the {@link MediaCodec} being configured.
* @param format The format.
* @return A maximum input size in bytes, or {@link Format#NO_VALUE} if a maximum could not be
* determined.
*/
public static int getCodecMaxInputSize(MediaCodecInfo codecInfo, Format format) {
int width = format.width;
int height = format.height;
if (width == Format.NO_VALUE || height == Format.NO_VALUE) {
// We can't infer a maximum input size without video dimensions.
return Format.NO_VALUE;
}
String sampleMimeType = format.sampleMimeType;
if (MimeTypes.VIDEO_DOLBY_VISION.equals(sampleMimeType)) {
// Dolby vision can be a wrapper around H264 or H265. We assume it's wrapping H265 by default
// because it's the common case, and because some devices may fail to allocate the codec when
// the larger buffer size required for H264 is requested. We size buffers for H264 only if the
// format contains sufficient information for us to determine unambiguously that it's a H264
// profile.
sampleMimeType = MimeTypes.VIDEO_H265;
@Nullable
Pair<Integer, Integer> codecProfileAndLevel = MediaCodecUtil.getCodecProfileAndLevel(format);
if (codecProfileAndLevel != null) {
int profile = codecProfileAndLevel.first;
if (profile == CodecProfileLevel.DolbyVisionProfileDvavSe
|| profile == CodecProfileLevel.DolbyVisionProfileDvavPer
|| profile == CodecProfileLevel.DolbyVisionProfileDvavPen) {
sampleMimeType = MimeTypes.VIDEO_H264;
}
}
}
// Attempt to infer a maximum input size from the format.
int maxPixels;
int minCompressionRatio;
switch (sampleMimeType) {
case MimeTypes.VIDEO_H263:
case MimeTypes.VIDEO_MP4V:
maxPixels = width * height;
minCompressionRatio = 2;
break;
case MimeTypes.VIDEO_H264:
if ("BRAVIA 4K 2015".equals(Util.MODEL) // Sony Bravia 4K
|| ("Amazon".equals(Util.MANUFACTURER)
&& ("KFSOWI".equals(Util.MODEL) // Kindle Soho
|| ("AFTS".equals(Util.MODEL) && codecInfo.secure)))) { // Fire TV Gen 2
// Use the default value for cases where platform limitations may prevent buffers of the
// calculated maximum input size from being allocated.
return Format.NO_VALUE;
}
// Round up width/height to an integer number of macroblocks.
maxPixels = Util.ceilDivide(width, 16) * Util.ceilDivide(height, 16) * 16 * 16;
minCompressionRatio = 2;
break;
case MimeTypes.VIDEO_VP8:
// VPX does not specify a ratio so use the values from the platform's SoftVPX.cpp.
maxPixels = width * height;
minCompressionRatio = 2;
break;
case MimeTypes.VIDEO_H265:
case MimeTypes.VIDEO_VP9:
maxPixels = width * height;
minCompressionRatio = 4;
break;
default:
// Leave the default max input size.
return Format.NO_VALUE;
}
// Estimate the maximum input size assuming three channel 4:2:0 subsampled input frames.
return (maxPixels * 3) / (2 * minCompressionRatio);
}
@Override
protected float getCodecOperatingRateV23(
float targetPlaybackSpeed, Format format, Format[] streamFormats) {
@ -1585,82 +1661,6 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
}
}
/**
* Returns a maximum input size for a given codec and format.
*
* @param codecInfo Information about the {@link MediaCodec} being configured.
* @param format The format.
* @return A maximum input size in bytes, or {@link Format#NO_VALUE} if a maximum could not be
* determined.
*/
private static int getCodecMaxInputSize(MediaCodecInfo codecInfo, Format format) {
int width = format.width;
int height = format.height;
if (width == Format.NO_VALUE || height == Format.NO_VALUE) {
// We can't infer a maximum input size without video dimensions.
return Format.NO_VALUE;
}
String sampleMimeType = format.sampleMimeType;
if (MimeTypes.VIDEO_DOLBY_VISION.equals(sampleMimeType)) {
// Dolby vision can be a wrapper around H264 or H265. We assume it's wrapping H265 by default
// because it's the common case, and because some devices may fail to allocate the codec when
// the larger buffer size required for H264 is requested. We size buffers for H264 only if the
// format contains sufficient information for us to determine unambiguously that it's a H264
// profile.
sampleMimeType = MimeTypes.VIDEO_H265;
@Nullable
Pair<Integer, Integer> codecProfileAndLevel = MediaCodecUtil.getCodecProfileAndLevel(format);
if (codecProfileAndLevel != null) {
int profile = codecProfileAndLevel.first;
if (profile == CodecProfileLevel.DolbyVisionProfileDvavSe
|| profile == CodecProfileLevel.DolbyVisionProfileDvavPer
|| profile == CodecProfileLevel.DolbyVisionProfileDvavPen) {
sampleMimeType = MimeTypes.VIDEO_H264;
}
}
}
// Attempt to infer a maximum input size from the format.
int maxPixels;
int minCompressionRatio;
switch (sampleMimeType) {
case MimeTypes.VIDEO_H263:
case MimeTypes.VIDEO_MP4V:
maxPixels = width * height;
minCompressionRatio = 2;
break;
case MimeTypes.VIDEO_H264:
if ("BRAVIA 4K 2015".equals(Util.MODEL) // Sony Bravia 4K
|| ("Amazon".equals(Util.MANUFACTURER)
&& ("KFSOWI".equals(Util.MODEL) // Kindle Soho
|| ("AFTS".equals(Util.MODEL) && codecInfo.secure)))) { // Fire TV Gen 2
// Use the default value for cases where platform limitations may prevent buffers of the
// calculated maximum input size from being allocated.
return Format.NO_VALUE;
}
// Round up width/height to an integer number of macroblocks.
maxPixels = Util.ceilDivide(width, 16) * Util.ceilDivide(height, 16) * 16 * 16;
minCompressionRatio = 2;
break;
case MimeTypes.VIDEO_VP8:
// VPX does not specify a ratio so use the values from the platform's SoftVPX.cpp.
maxPixels = width * height;
minCompressionRatio = 2;
break;
case MimeTypes.VIDEO_H265:
case MimeTypes.VIDEO_VP9:
maxPixels = width * height;
minCompressionRatio = 4;
break;
default:
// Leave the default max input size.
return Format.NO_VALUE;
}
// Estimate the maximum input size assuming three channel 4:2:0 subsampled input frames.
return (maxPixels * 3) / (2 * minCompressionRatio);
}
/**
* Returns whether the device is known to do post processing by default that isn't compatible with
* ExoPlayer.