Update libjpeg-turbo to r856.

tjbench.c

 /*
  * Copyright (C)2009-2012 D. R. Commander.  All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are met:
  *
  * - Redistributions of source code must retain the above copyright notice,
  *   this list of conditions and the following disclaimer.
  * - Redistributions in binary form must reproduce the above copyright notice,
  *   this list of conditions and the following disclaimer in the documentation
@@ skipping 649 matching lines @@
         if(t) {free(t);  t=NULL;}
         if(handle) {tjDestroy(handle);  handle=NULL;}
         return;
 }
 
 
 void usage(char *progname)
 {
         int i;
         printf("USAGE: %s\n", progname);
-        printf("       <Inputfile (BMP|PPM)> <%% Quality> [options]\n\n");
+        printf("       <Inputfile (BMP|PPM)> <Quality> [options]\n\n");
         printf("       %s\n", progname);
         printf("       <Inputfile (JPG)> [options]\n\n");
         printf("Options:\n\n");
         printf("-alloc = Dynamically allocate JPEG image buffers\n");
         printf("-bmp = Generate output images in Windows Bitmap format (default=PPM)\n");
         printf("-bottomup = Test bottom-up compression/decompression\n");
         printf("-tile = Test performance of the codec when the image is encoded as separate\n");
         printf("     tiles of varying sizes.\n");
         printf("-forcemmx, -forcesse, -forcesse2, -forcesse3 =\n");
         printf("     Force MMX, SSE, SSE2, or SSE3 code paths in the underlying codec\n");
         printf("-rgb, -bgr, -rgbx, -bgrx, -xbgr, -xrgb =\n");
         printf("     Test the specified color conversion path in the codec (default: BGR)\n");
-        printf("-fastupsample = Use fast, inaccurate upsampling code to perform 4:2:2 and 4:2:0\n");
-        printf("     YUV decoding\n");
+        printf("-fastupsample = Use the fastest chrominance upsampling algorithm available in\n");
+        printf("     the underlying codec\n");
+        printf("-fastdct = Use the fastest DCT/IDCT algorithms available in the underlying\n");
+        printf("     codec\n");
+        printf("-accuratedct = Use the most accurate DCT/IDCT algorithms available in the\n");
+        printf("     underlying codec\n");
         printf("-quiet = Output results in tabular rather than verbose format\n");
         printf("-yuvencode = Encode RGB input as planar YUV rather than compressing as JPEG\n");
         printf("-yuvdecode = Decode JPEG image to planar YUV rather than RGB\n");
         printf("-scale M/N = scale down the width/height of the decompressed JPEG image by a\n");
         printf("     factor of M/N (M/N = ");
         for(i=0; i<nsf; i++)
         {
                 printf("%d/%d", scalingfactors[i].num, scalingfactors[i].denom);
                 if(nsf==2 && i!=nsf-1) printf(" or ");
                 else if(nsf>2)
@@ skipping 94 matching lines @@
                         if(!strcasecmp(argv[i], "-forcemmx"))
                         {
                                 printf("Forcing MMX code\n\n");
                                 flags|=TJFLAG_FORCEMMX;
                         }
                         if(!strcasecmp(argv[i], "-fastupsample"))
                         {
                                 printf("Using fast upsampling code\n\n");
                                 flags|=TJFLAG_FASTUPSAMPLE;
                         }
+                        if(!strcasecmp(argv[i], "-fastdct"))
+                        {
+                                printf("Using fastest DCT/IDCT algorithm\n\n");
+                                flags|=TJFLAG_FASTDCT;
+                        }
+                        if(!strcasecmp(argv[i], "-accuratedct"))
+                        {
+                                printf("Using most accurate DCT/IDCT algorithm\n\n");
+                                flags|=TJFLAG_ACCURATEDCT;
+                        }
                         if(!strcasecmp(argv[i], "-rgb")) pf=TJPF_RGB;
                         if(!strcasecmp(argv[i], "-rgbx")) pf=TJPF_RGBX;
                         if(!strcasecmp(argv[i], "-bgr")) pf=TJPF_BGR;
                         if(!strcasecmp(argv[i], "-bgrx")) pf=TJPF_BGRX;
                         if(!strcasecmp(argv[i], "-xbgr")) pf=TJPF_XBGR;
                         if(!strcasecmp(argv[i], "-xrgb")) pf=TJPF_XRGB;
                         if(!strcasecmp(argv[i], "-bottomup")) flags|=TJFLAG_BOTTOMUP;
                         if(!strcasecmp(argv[i], "-quiet")) quiet=1;
                         if(!strcasecmp(argv[i], "-qq")) quiet=2;
                         if(!strcasecmp(argv[i], "-scale") && i<argc-1)
@@ skipping 82 matching lines @@
                 dotest(srcbuf, w, h, TJ_422, i, argv[1]);
         printf("\n");
         for(i=maxqual; i>=minqual; i--)
                 dotest(srcbuf, w, h, TJ_444, i, argv[1]);
         printf("\n");
 
         bailout:
         if(srcbuf) free(srcbuf);
         return retval;
 }