tjbench man page on Kali

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TJBENCH(1)			 User Commands			    TJBENCH(1)

NAME
       tjbench - benchmark the performance of libjpeg-turbo

USAGE
       tjbench <Inputfile (BMP|PPM)> <Quality> [options]

       tjbench <Inputfile (JPG)> [options]

OPTIONS
       -alloc

	      Dynamically allocate JPEG image buffers

       -bmp

	      Generate output images in Windows Bitmap format (default=PPM)

       -bottomup

	      Test bottom-up compression/decompression

       -tile

	      Test performance of the codec when the image is encoded as sepa‐
	      rate tiles of varying sizes.

       -forcemmx, -forcesse, -forcesse2, -forcesse3

	      Force MMX, SSE, SSE2, or SSE3 code paths in the underlying codec

       -rgb, -bgr, -rgbx, -bgrx, -xbgr, -xrgb

	      Test the specified color conversion path in the codec  (default:
	      BGR)

       -fastupsample

	      Use  the	fastest	 chrominance upsampling algorithm available in
	      the underlying codec

       -fastdct

	      Use the fastest DCT/IDCT algorithms available in the  underlying
	      codec

       -accuratedct

	       Use  the	 most  accurate	 DCT/IDCT  algorithms available in the
	      underlying codec

       -subsamp <s>

	      When testing JPEG compression, this option specifies  the	 level
	      of  chrominance subsampling to use (<s> = 444, 422, 440, 420, or
	      GRAY).  The default is to	 test  Grayscale,  4:2:0,  4:2:2,  and
	      4:4:4 in sequence.

       -quiet

	      Output results in tabular rather than verbose format

       -yuvencode

	      Encode RGB input as planar YUV rather than compressing as JPEG

       -yuvdecode

	      Decode JPEG image to planar YUV rather than RGB

       -scale M/N

	      scale  down the width/height of the decompressed JPEG image by a
	      factor of M/N (M/N = 2/1, 15/8, 7/4, 13/8, 3/2, 11/8, 5/4,  9/8,
	      1/1, 7/8, 3/4, 5/8, 1/2, 3/8, 1/4, or 1/8)

       -hflip, -vflip, -transpose, -transverse, -rot90, -rot180, -rot270

	      Perform the corresponding lossless transform prior to decompres‐
	      sion (these options are mutually exclusive)

       -grayscale

	      Perform lossless grayscale  conversion  prior  to	 decompression
	      test (can be combined with the other transforms above)

       -benchtime <t>

	      Run each benchmark for at least <t> seconds (default = 5.0)

	      NOTE:  If	 the  quality is specified as a range (e.g. 90-100), a
	      separate test will be performed for all quality  values  in  the
	      range.

tjbench				   July 2014			    TJBENCH(1)
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