const image.YCbCrSubsampleRatio420

6 uses

	image (current package)
		ycbcr.go#L17: 	YCbCrSubsampleRatio420
		ycbcr.go#L29: 	case YCbCrSubsampleRatio420:
		ycbcr.go#L99: 	case YCbCrSubsampleRatio420:
		ycbcr.go#L147: 	case YCbCrSubsampleRatio420:

	image/internal/imageutil
		impl.go#L151: 	case image.YCbCrSubsampleRatio420:

	image/jpeg
		scan.go#L32: 		subsampleRatio = image.YCbCrSubsampleRatio420

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