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Add comment explaining Dolby Vision fallback logic

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PiperOrigin-RevId: 357158075
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kimvde 2021-02-12 11:24:44 +00:00 committed by Oliver Woodman
parent 6afb669aa7
commit 158e6de25a
1 changed files with 4 additions and 1 deletions
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5
library/core/src/main/java/com/google/android/exoplayer2/video/MediaCodecVideoRenderer.java
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@ -377,7 +377,10 @@ public class MediaCodecVideoRenderer extends MediaCodecRenderer {
mimeType, requiresSecureDecoder, requiresTunnelingDecoder); mimeType, requiresSecureDecoder, requiresTunnelingDecoder);
decoderInfos = MediaCodecUtil.getDecoderInfosSortedByFormatSupport(decoderInfos, format); decoderInfos = MediaCodecUtil.getDecoderInfosSortedByFormatSupport(decoderInfos, format);
if (MimeTypes.VIDEO_DOLBY_VISION.equals(mimeType)) { if (MimeTypes.VIDEO_DOLBY_VISION.equals(mimeType)) {
// Fall back to H.264/AVC or H.265/HEVC for the relevant DV profiles. // Fall back to H.264/AVC or H.265/HEVC for the relevant DV profiles. This can't be done for
// profile CodecProfileLevel.DolbyVisionProfileDvheStn and profile
// CodecProfileLevel.DolbyVisionProfileDvheDtb because the first one is not backward
// compatible and the second one is deprecated and is not always backward compatible.
@Nullable @Nullable
Pair<Integer, Integer> codecProfileAndLevel = MediaCodecUtil.getCodecProfileAndLevel(format); Pair<Integer, Integer> codecProfileAndLevel = MediaCodecUtil.getCodecProfileAndLevel(format);
if (codecProfileAndLevel != null) { if (codecProfileAndLevel != null) {