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Give a calculation for H.264 level picture size limits.

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-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117220482
This commit is contained in:
olly 2016-03-15 02:55:22 -07:00 committed by Oliver Woodman
parent 5a6d1435ab
commit a1c74cb259
1 changed files with 16 additions and 16 deletions
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32
library/src/main/java/com/google/android/exoplayer/MediaCodecUtil.java
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@ -260,7 +260,7 @@ public final class MediaCodecUtil {
} }
/** /**
* Conversion values taken from: https://en.wikipedia.org/wiki/H.264/MPEG-4_AVC. * Conversion values taken from ISO 14496-10 Table A-1.
* *
* @param avcLevel one of CodecProfileLevel.AVCLevel* constants. * @param avcLevel one of CodecProfileLevel.AVCLevel* constants.
* @return maximum frame size that can be decoded by a decoder with the specified avc level * @return maximum frame size that can be decoded by a decoder with the specified avc level
@ -268,21 +268,21 @@ public final class MediaCodecUtil {
*/ */
private static int avcLevelToMaxFrameSize(int avcLevel) { private static int avcLevelToMaxFrameSize(int avcLevel) {
switch (avcLevel) { switch (avcLevel) {
case CodecProfileLevel.AVCLevel1: return 25344; case CodecProfileLevel.AVCLevel1: return 99 * 16 * 16;
case CodecProfileLevel.AVCLevel1b: return 25344; case CodecProfileLevel.AVCLevel1b: return 99 * 16 * 16;
case CodecProfileLevel.AVCLevel12: return 101376; case CodecProfileLevel.AVCLevel12: return 396 * 16 * 16;
case CodecProfileLevel.AVCLevel13: return 101376; case CodecProfileLevel.AVCLevel13: return 396 * 16 * 16;
case CodecProfileLevel.AVCLevel2: return 101376; case CodecProfileLevel.AVCLevel2: return 396 * 16 * 16;
case CodecProfileLevel.AVCLevel21: return 202752; case CodecProfileLevel.AVCLevel21: return 792 * 16 * 16;
case CodecProfileLevel.AVCLevel22: return 414720; case CodecProfileLevel.AVCLevel22: return 1620 * 16 * 16;
case CodecProfileLevel.AVCLevel3: return 414720; case CodecProfileLevel.AVCLevel3: return 1620 * 16 * 16;
case CodecProfileLevel.AVCLevel31: return 921600; case CodecProfileLevel.AVCLevel31: return 3600 * 16 * 16;
case CodecProfileLevel.AVCLevel32: return 1310720; case CodecProfileLevel.AVCLevel32: return 5120 * 16 * 16;
case CodecProfileLevel.AVCLevel4: return 2097152; case CodecProfileLevel.AVCLevel4: return 8192 * 16 * 16;
case CodecProfileLevel.AVCLevel41: return 2097152; case CodecProfileLevel.AVCLevel41: return 8192 * 16 * 16;
case CodecProfileLevel.AVCLevel42: return 2228224; case CodecProfileLevel.AVCLevel42: return 8704 * 16 * 16;
case CodecProfileLevel.AVCLevel5: return 5652480; case CodecProfileLevel.AVCLevel5: return 22080 * 16 * 16;
case CodecProfileLevel.AVCLevel51: return 9437184; case CodecProfileLevel.AVCLevel51: return 36864 * 16 * 16;
default: return -1; default: return -1;
} }
} }