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Add note regarding the fact that 4:4:0 lacks full SIMD support; Add an option for benchmarking 4:4:0 subsampling in tjbench.

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DRC
2013-08-18 09:15:37 +00:00
parent 458a2dd64e
commit b34b2ad711
12 changed files with 18 additions and 14 deletions
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2
doc/html/annotated.html
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@@ -95,7 +95,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Sun Aug 18 2013 03:40:14 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
Generated on Sun Aug 18 2013 04:14:41 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.3.1
</small></address>

2
doc/html/classes.html
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@@ -97,7 +97,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Sun Aug 18 2013 03:40:14 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
Generated on Sun Aug 18 2013 04:14:41 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.3.1
</small></address>

2
doc/html/functions.html
View File

@@ -125,7 +125,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Sun Aug 18 2013 03:40:14 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
Generated on Sun Aug 18 2013 04:14:41 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.3.1
</small></address>

2
doc/html/functions_vars.html
View File

@@ -125,7 +125,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Sun Aug 18 2013 03:40:14 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
Generated on Sun Aug 18 2013 04:14:41 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.3.1
</small></address>

4
doc/html/group___turbo_j_p_e_g.html
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@@ -704,7 +704,7 @@ Variables</h2></td></tr>
</td></tr>
<tr><td class="fieldname"><em><a class="anchor" id="gga1d047060ea80bb9820d540bb928e9074accf740e6f3aa6ba20ba922cad13cb974"></a>TJSAMP_440</em>&nbsp;</td><td class="fielddoc">
<p>4:4:0 chrominance subsampling. </p>
<p>The JPEG or YUV image will contain one chrominance component for every 1x2 block of pixels in the source image. </p>
<p>The JPEG or YUV image will contain one chrominance component for every 1x2 block of pixels in the source image. Note that 4:4:0 subsampling is not fully accelerated in the libjpeg-turbo implementation of TurboJPEG. </p>
</td></tr>
</table>
@@ -1694,7 +1694,7 @@ If you choose option 1, <code>dstSizes[i]</code> should be set to the size of yo
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Sun Aug 18 2013 03:40:14 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
Generated on Sun Aug 18 2013 04:14:41 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.3.1
</small></address>

2
doc/html/index.html
View File

@@ -81,7 +81,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Sun Aug 18 2013 03:40:14 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
Generated on Sun Aug 18 2013 04:14:41 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.3.1
</small></address>

2
doc/html/modules.html
View File

@@ -86,7 +86,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Sun Aug 18 2013 03:40:14 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
Generated on Sun Aug 18 2013 04:14:41 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.3.1
</small></address>

2
doc/html/structtjregion.html
View File

@@ -177,7 +177,7 @@ Data Fields</h2></td></tr>
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Sun Aug 18 2013 03:40:14 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
Generated on Sun Aug 18 2013 04:14:41 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.3.1
</small></address>

2
doc/html/structtjscalingfactor.html
View File

@@ -139,7 +139,7 @@ Data Fields</h2></td></tr>
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Sun Aug 18 2013 03:40:14 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
Generated on Sun Aug 18 2013 04:14:41 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.3.1
</small></address>

2
doc/html/structtjtransform.html
View File

@@ -203,7 +203,7 @@ Data Fields</h2></td></tr>
</div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Sun Aug 18 2013 03:40:14 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
Generated on Sun Aug 18 2013 04:14:41 for TurboJPEG by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.3.1
</small></address>

8
tjbench.c
View File

@@ -1,5 +1,5 @@
/*
* Copyright (C)2009-2012 D. R. Commander. All Rights Reserved.
* Copyright (C)2009-2013 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:
@@ -686,6 +686,7 @@ void usage(char *progname)
printf(" codec\n");
printf("-accuratedct = Use the most accurate DCT/IDCT algorithms available in the\n");
printf(" underlying codec\n");
printf("-440 = Test 4:4:0 chrominance subsampling instead of 4:2:2\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");
@@ -719,7 +720,7 @@ int main(int argc, char *argv[])
{
unsigned char *srcbuf=NULL; int w, h, i, j;
int minqual=-1, maxqual=-1; char *temp;
int minarg=2; int retval=0;
int minarg=2, retval=0, do440=0;
if((scalingfactors=tjGetScalingFactors(&nsf))==NULL || nsf==0)
_throwtj("executing tjGetScalingFactors()");
@@ -810,6 +811,7 @@ int main(int argc, char *argv[])
printf("Using most accurate DCT/IDCT algorithm\n\n");
flags|=TJFLAG_ACCURATEDCT;
}
if(!strcmp(argv[i], "-440")) do440=1;
if(!strcasecmp(argv[i], "-rgb")) pf=TJPF_RGB;
if(!strcasecmp(argv[i], "-rgbx")) pf=TJPF_RGBX;
if(!strcasecmp(argv[i], "-bgr")) pf=TJPF_BGR;
@@ -902,7 +904,7 @@ int main(int argc, char *argv[])
dotest(srcbuf, w, h, TJ_420, i, argv[1]);
printf("\n");
for(i=maxqual; i>=minqual; i--)
dotest(srcbuf, w, h, TJ_422, i, argv[1]);
dotest(srcbuf, w, h, do440? TJSAMP_440:TJ_422, i, argv[1]);
printf("\n");
for(i=maxqual; i>=minqual; i--)
dotest(srcbuf, w, h, TJ_444, i, argv[1]);

2
turbojpeg.h
View File

@@ -85,6 +85,8 @@ enum TJSAMP
/**
* 4:4:0 chrominance subsampling. The JPEG or YUV image will contain one
* chrominance component for every 1x2 block of pixels in the source image.
* Note that 4:4:0 subsampling is not fully accelerated in the libjpeg-turbo
* implementation of TurboJPEG.
*/
TJSAMP_440
};