trc-type.html - mozsearch

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	<!-- All of these images should render the same

	     they all have icc profiles with different

	     but equivalent tone reproduction curves.

	The profiles were generated with the following code and added to the images using pngcrush.

	cmsHPROFILE profile = cmsCreate_sRGBProfile();

        cmsAddTag(profile, icSigDeviceMfgDescTag,      (LPVOID) "(lcms moz internal)");

        cmsAddTag(profile, icSigDeviceModelDescTag,    (LPVOID) "linear");

        cmsAddTag(profile, icSigProfileDescriptionTag, (LPVOID) "linear");

        GAMMATABLE linear_trc;

        linear_trc.nEntries = 0;

        cmsAddTag(profile, icSigRedTRCTag, &linear_trc);

        cmsAddTag(profile, icSigGreenTRCTag, &linear_trc);

        cmsAddTag(profile, icSigBlueTRCTag, &linear_trc);

        _cmsSaveProfile(profile, "linear_gen.icc");

        GAMMATABLE linear_curve_trc;

        linear_curve_trc.nEntries = 1;

        linear_curve_trc.GammaTable[0] = 0x0100;

        cmsAddTag(profile, icSigRedTRCTag, &linear_curve_trc);

        cmsAddTag(profile, icSigGreenTRCTag, &linear_curve_trc);

        cmsAddTag(profile, icSigBlueTRCTag, &linear_curve_trc);

        _cmsSaveProfile(profile, "linear_curve_gen.icc");

        GAMMATABLE *linear_table_trc = malloc(sizeof(GAMMATABLE) + sizeof(short)*2);

        linear_table_trc->nEntries = 2;

        linear_table_trc->GammaTable[0] = 0x0;

        linear_table_trc->GammaTable[1] = 0xffff;

        cmsAddTag(profile, icSigRedTRCTag, linear_table_trc);

        cmsAddTag(profile, icSigGreenTRCTag, linear_table_trc);

        cmsAddTag(profile, icSigBlueTRCTag, linear_table_trc);

        _cmsSaveProfile(profile, "linear_table_gen.icc");

        free(linear_table_trc);

-->

	<img src="color-curv.png">

	<img src="color-table.png">

	<img src="color-lin.png">

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