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-rw-r--r--conversions.h382
1 files changed, 382 insertions, 0 deletions
diff --git a/conversions.h b/conversions.h
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+++ b/conversions.h
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+/* See LICENSE file for copyright and license details. */
+
+#define MATRIX(M11, M12, M13, M21, M22, M23, M31, M32, M33)\
+ D(M11), D(M12), D(M13),\
+ D(M21), D(M22), D(M23),\
+ D(M31), D(M32), D(M33)
+
+
+
+#define CIEXYZ_TO_RGB(TO_MINV)\
+ (TO_MINV)[0][0], (TO_MINV)[0][1], (TO_MINV)[0][2],\
+ (TO_MINV)[1][0], (TO_MINV)[1][1], (TO_MINV)[1][2],\
+ (TO_MINV)[2][0], (TO_MINV)[2][1], (TO_MINV)[2][2]
+
+#define CIEXYZ_TO_SRGB\
+ MATRIX( 3.240446254647737500675930277794, -1.537134761820080575134284117667, -0.498530193022728718155178739835,\
+ -0.969266606244679751469561779231, 1.876011959788370209167851498933, 0.041556042214430065351304932619,\
+ 0.055643503564352832235773149705, -0.204026179735960239147729566866, 1.057226567722703292062647051353)
+
+#define YIQ_TO_SRGB\
+ MATRIX(1., 0.95629483232089407263032398986979387700557708740234, 0.62102512544472865396727456754888407886028289794922,\
+ 1., -0.27212147408397735492968649850809015333652496337891, -0.64738095351761570928061928498209454119205474853516,\
+ 1., -1.10698990856712820018969978264067322015762329101562, 1.70461497549882934343656870623817667365074157714844)
+ /* ⎛1 1000 cos 33° / 877 1000 sin 33° / 877 ⎞
+ ⎜1 9500 sin 33° / 24067 - 299000 * cos 33° / 514799 -9500 cos 33° / 24067 - 299000 * sin 33° / 514799⎟
+ ⎝1 -250 sin 33° / 123 250 cos 33° / 123 ⎠
+ */
+
+#define YDBDR_TO_SRGB\
+ MATRIX(1., 0.000092303716148, -0.525912630661865,\
+ 1., -0.129132898890509, 0.267899328207599,\
+ 1., 0.664679059978955, -0.000079202543533)
+
+#define YPBPR_TO_SRGB(FROM_Y, FROM_PB, FROM_PR, TO_R, TO_G, TO_B)\
+ do {\
+ TYPE y__ = (FROM_Y);\
+ TYPE r__ = (FROM_PR) + y__;\
+ TYPE b__ = (FROM_PB) + y__;\
+ (TO_R) = r__;\
+ (TO_B) = b__;\
+ (TO_G) = (y__ - r__ * D(0.2126) - b__ * D(0.0722)) / D(0.7152);\
+ } while (0)
+
+#define YUV_TO_SRGB\
+ MATRIX(1., 0.00028328010485821202317155420580263580632163211703, 1.14070449590558520291949662350816652178764343261719,\
+ 1., -0.39630886669497211727275498560629785060882568359375, -0.58107364288228224857846271333983168005943298339844,\
+ 1., 2.03990003507541306504435851820744574069976806640625, 0.00017179031692307700847528739718228507626918144524)
+
+#define YCGCO_TO_SRGB\
+ MATRIX(1., -1., 1.,\
+ 1., 1., 0.,\
+ 1., -1., -1.)
+
+#define CIEXYZ_TO_CIEXYY(FROM_X, FROM_Y, FROM_Z, TO_X, TO_Y, TO_YY)\
+ do {\
+ TYPE x__ = (FROM_X), y__ = (FROM_Y), z__ = (FROM_Z);\
+ TYPE s__ = x__ + y__ + z__;\
+ x__ = x__ / s__;\
+ s__ = y__ / s__;\
+ if (WASDIV0(x__) || WASDIV0(s__))\
+ x__ = s__ = 0;\
+ (TO_X) = x__;\
+ (TO_Y) = s__;\
+ (TO_YY) = y__;\
+ } while (0)
+
+#define RGB_TO_CIEXYZ(FROM_M)\
+ (FROM_M)[0][0], (FROM_M)[0][1], (FROM_M)[0][2],\
+ (FROM_M)[1][0], (FROM_M)[1][1], (FROM_M)[1][2],\
+ (FROM_M)[2][0], (FROM_M)[2][1], (FROM_M)[2][2]
+
+#define SRGB_TO_CIEXYZ\
+ MATRIX(0.412457445582367576708548995157, 0.357575865245515878143578447634, 0.180437247826399665973085006954,\
+ 0.212673370378408277403536885686, 0.715151730491031756287156895269, 0.072174899130559869164791564344,\
+ 0.019333942761673460208893260415, 0.119191955081838593666354597644, 0.950302838552371742508739771438)
+
+#define CIEXYY_TO_CIEXYZ(FROM_X, FROM_Y, FROM_YY, TO_X, TO_Y, TO_Z)\
+ do {\
+ TYPE x__ = (FROM_X), y__ = (FROM_Y), Y__ = (FROM_YY);\
+ TYPE Yy__ = Y__ / y__;\
+ if (WASDIV0(Yy__)) {\
+ (TO_X) = (TO_Y) = (TO_Z) = Y__;\
+ } else {\
+ (TO_X) = x__ * Yy__;\
+ (TO_Y) = Y__;\
+ (TO_Z) = (1 - x__ - y__) * Yy__;\
+ }\
+ } while (0)
+
+#define CIELAB_TO_CIEXYZ(FROM_L, FROM_A, FROM_B, TO_X, TO_Y, TO_Z)\
+ do {\
+ TYPE Y__ = ((FROM_L) + 16) / 116;\
+ TYPE X__ = Y__ + (FROM_A) / 500;\
+ TYPE Z__ = Y__ - (FROM_B) / 200;\
+ (TO_X) = cielab_finv(X__) * D(0.95047);\
+ (TO_Y) = cielab_finv(Y__);\
+ (TO_Z) = cielab_finv(Z__) * D(1.08883);\
+ } while (0)
+
+#define CIELUV_TO_CIEXYZ(FROM_L, FROM_U, FROM_V, TO_X, TO_Y, TO_Z, FROM_WHITE_X, FROM_WHITE_Y, FROM_WHITE_Z)\
+ do {\
+ TYPE L__ = (FROM_L), X__ = (FROM_WHITE_X), Y__ = (FROM_WHITE_Y), Z__ = (FROM_WHITE_Z);\
+ TYPE L13__ = L__ * 13;\
+ TYPE t__ = X__ + 15 * Y__ + 3 * Z__;\
+ TYPE u__ = (FROM_U) / L13__ + 4 * X__ / t__;\
+ TYPE v__ = (FROM_V) / L13__ + 9 * Y__ / t__;\
+ if (L__ <= 8) {\
+ Y__ *= L__ * 27 / 24389;\
+ } else {\
+ L__ = (L__ + 16) / 116;\
+ Y__ *= L__ * L__ * L__;\
+ }\
+ (TO_X) = D(2.25) * Y__ * u__ / v__;\
+ (TO_Y) = Y__;\
+ (TO_Z) = Y__ * (3 / v__ - D(0.75) * u__ / v__ - 5);\
+ } while (0)
+
+#define YIQ_TO_CIEXYZ\
+ MATRIX( 0.95047055865428309306963683411595411598682403564453,\
+ 0.09738463974178063198294807989441324025392532348633,\
+ 0.33223466706854809515903070860076695680618286132812,\
+ 0.99999999999999988897769753748434595763683319091797,\
+ -0.07112658301916767455974621725545148365199565887451,\
+ -0.20786968876398304040264974901219829916954040527344,\
+ 1.08882873639588373393394249433185905218124389648438,\
+ -1.06592139332461721679123911599162966012954711914062,\
+ 1.55474471255181900808395312196807935833930969238281)
+
+#define YDBDR_TO_CIEXYZ\
+ MATRIX( 0.95047055865428309306963683411595411598682403564453,\
+ 0.07379612357298576119646327242662664502859115600586,\
+ -0.12113653724874726136384595065464964136481285095215,\
+ 0.99999999999999988897769753748434595763683319091797,\
+ -0.04435684145428285540813106990754022262990474700928,\
+ 0.07973534004202506575431641522300196811556816101074,\
+ 1.08882873639588373393394249433185905218124389648438,\
+ 0.61625657933494271123464613992837257683277130126953,\
+ 0.02168821359337728266192257819966471288353204727173)
+
+#define YUV_TO_CIEXYZ\
+ MATRIX( 0.95047055865428309306963683411595411598682403564453,\
+ 0.22648030324549334180161963558930438011884689331055,\
+ 0.26274514929253273143316960158699657768011093139648,\
+ 0.99999999999999988897769753748434595763683319091797,\
+ -0.13613114642319409930415474718756740912795066833496,\
+ -0.17294595255115238763288232348713790997862815856934,\
+ 1.08882873639588373393394249433185905218124389648438,\
+ 1.89129144197893928058817891724174842238426208496094,\
+ -0.04704173528403532422714761196402832865715026855469)
+
+#define YPBPR_TO_CIEXYZ\
+ MATRIX( 0.95047055865428298204733437160030007362365722656250,\
+ 0.14433968424876231217979238863335922360420227050781,\
+ 0.30616461986760712399302519770571961998939514160156,\
+ 0.99999999999999977795539507496869191527366638183594,\
+ -0.00002022802471486617736928792510298080742359161377,\
+ 0.00008771894888734421691367515450110659003257751465,\
+ 1.08882873639588373393394249433185905218124389648438,\
+ 0.93827031735982591165168287261622026562690734863281,\
+ -0.01609699914324668607035206946420657914131879806519)
+
+#define YCGCO_TO_CIEXYZ\
+ MATRIX( 0.95047055865428309306963683411595411598682403564453,\
+ -0.23531882816325136453805555447615915909409523010254,\
+ 0.23202019775596791073546398820326430723071098327637,\
+ 0.99999999999999988897769753748434595763683319091797,\
+ 0.43030346098206362359661625305307097733020782470703,\
+ 0.14049847124784842211653312915586866438388824462891,\
+ 1.08882873639588373393394249433185905218124389648438,\
+ -0.85044482623220662986796014592982828617095947265625,\
+ -0.93096889579069830311652822274481877684593200683594)
+
+#define CIE1960UCS_TO_CIEXYZ(FROM_U, FROM_V, FROM_Y, TO_X, TO_Y, TO_Z)\
+ do {\
+ TYPE u__ = (FROM_U), v__ = (FROM_V), Y__ = (FROM_Y);\
+ (TO_X) = D(1.5) * Y__ * u__ / v__;\
+ (TO_Y) = Y__;\
+ (TO_Z) = (4 * Y__ - Y__ * u__ - 10 * Y__ * v__) / (2 * v__);\
+ } while (0)
+
+#define CIEXYZ_TO_CIELAB(FROM_X, FROM_Y, FROM_Z, TO_L, TO_A, TO_B)\
+ do {\
+ TYPE X__ = (FROM_X), Y__ = (FROM_Y), Z__ = (FROM_Z);\
+ X__ /= D(0.95047);\
+ Z__ /= D(1.08883);\
+ Y__ = cielab_f(Y__);\
+ (TO_L) = 116 * Y__ - 16;\
+ (TO_A) = 500 * (cielab_f(X__) - Y__);\
+ (TO_B) = 200 * (Y__ - cielab_f(Z__));\
+ } while (0)
+
+#define CIEXYZ_TO_CIELUV(FROM_X, FROM_Y, FROM_Z, TO_L, TO_U, TO_V, TO_WHITE_X, TO_WHITE_Y, TO_WHITE_Z)\
+ do {\
+ TYPE WX__ = (TO_WHITE_X), WY__ = (TO_WHITE_Y), WZ__ = (TO_WHITE_Z);\
+ TYPE X__ = (FROM_X), Y__ = (FROM_Y), Z__ = (FROM_Z);\
+ TYPE L2__, L__, u__, v__, t__;\
+ t__ = WX__ + 15 * WY__ + 3 * WZ__;\
+ u__ = 4 * WX__ / t__;\
+ v__ = 9 * WY__ / t__;\
+ t__ = X__ + 15 * Y__ + 3 * Z__;\
+ u__ = 4 * X__ / t__ - u__;\
+ v__ = 9 * Y__ / t__ - v__;\
+ L__ = Y__ / WY__;\
+ L2__ = L__ * 24389;\
+ L__ = L2__ <= 216 ? L2__ / 27 : xcbrt(L__) * 116 - 16;\
+ (TO_L) = L__;\
+ L__ *= 13;\
+ (TO_U) = u__ * L__;\
+ (TO_V) = v__ * L__;\
+ } while (0)
+
+#define CIELCHUV_TO_CIELUV(FROM_L, FROM_C, FROM_H, TO_L, TO_U, TO_V)\
+ do {\
+ TYPE C__ = (FROM_C), h__ = (FROM_H);\
+ (TO_L) = (FROM_L);\
+ (TO_U) = C__ * xcos(h__);\
+ (TO_V) = C__ * xsin(h__);\
+ } while (0)
+
+#define CIELUV_TO_CIELCHUV(FROM_L, FROM_U, FROM_V, TO_L, TO_C, TO_H, TO_ONE_REVOLUTION)\
+ do {\
+ TYPE u__ = (FROM_U), v__ = (FROM_V), rev__ = (TO_ONE_REVOLUTION), h__;\
+ (TO_L) = (FROM_L);\
+ (TO_C) = xsqrt(u__ * u__ + v__ * v__);\
+ h__ = xatan2(v__, u__) / PI2 * rev__;\
+ if (!WASDIV0(h__) && (h__ < 0))\
+ h__ += rev__;\
+ (TO_H) = h__;\
+ } while (0)
+
+#define SRGB_TO_YIQ\
+ MATRIX( 0.299, 0.587, 0.114,\
+ 0.59571613491277464191853141528554260730743408203125, /* (0.877 cos 33°)(1 - 0.299) - (0.492 sin 33°)(-0.299) */\
+ -0.27445283783925644716106262421817518770694732666016, /* (0.877 cos 33°)(-0.587) - (0.492 sin 33°)(-0.587) */\
+ -0.32126329707351808373516632855171337723731994628906, /* (0.877 cos 33°)(-0.114) - (0.492 sin 33°)(1 - 0.114) */\
+ 0.21145640212011795888713550084503367543220520019531, /* (0.877 sin 33°)(1 - 0.299) + (0.492 cos 33°)(-0.299) */\
+ -0.52259104529161115593183239980135113000869750976562, /* (0.877 sin 33°)(-0.587) + (0.492 cos 33°)(-0.587) */\
+ 0.31113464317149330806699936147197149693965911865234) /* (0.877 sin 33°)(-0.114) + (0.492 cos 33°)(1 - 0.114) */
+
+#define CIEXYZ_TO_YIQ\
+ MATRIX( 0.40627729168038273499519164033699780702590942382812,\
+ 0.61835674212166968910509012857801280915737152099609,\
+ -0.00414330221353725880462093300593551248311996459961,\
+ 2.17852787350219845308174626552499830722808837890625,\
+ -1.36502666214454104753883711964590474963188171386719,\
+ -0.64803574634025240541745915834326297044754028320312,\
+ 1.20905577682138853923277110880007967352867126464844,\
+ -1.36890364998339797431015085749095305800437927246094,\
+ 0.20180559439597040016778350945969577878713607788086)
+
+#define SRGB_TO_YDBDR\
+ MATRIX( 0.299, 0.587, 0.114,\
+ -0.450, -0.883, 1.333,\
+ -1.333, 1.116, 0.217)
+
+#define YUV_TO_YDBDR(FROM_Y, FROM_U, FROM_V, TO_Y, TO_DB, TO_DR)\
+ do {\
+ TYPE U__ = (FROM_U), V__ = (FROM_V);\
+ (TO_Y) = (FROM_Y);\
+ (TO_DB) = U__ * D(3.069);\
+ (TO_DR) = V__ * D(-2.169);\
+ } while (0)
+
+#define CIEXYZ_TO_YDBDR\
+ MATRIX( 0.40627729168038273499519164033699780702590942382812,\
+ 0.61835674212166968910509012857801280915737152099609,\
+ -0.00414330221353725880462093300593551248311996459961,\
+ -0.52816561102614745237815441214479506015777587890625,\
+ -1.23677481526212962315014465275453403592109680175781,\
+ 1.59692761635924940222253098909277468919754028320312,\
+ -5.38914174974103143966885909321717917919158935546875,\
+ 4.09835630362728497999569299281574785709381103515625,\
+ 0.94033545560642795013706063400604762136936187744141)
+
+#define YDBDR_TO_YUV(FROM_Y, FROM_DB, FROM_DR, TO_Y, TO_U, TO_V)\
+ do {\
+ TYPE DB__ = (FROM_DB), DR__ = (FROM_DR);\
+ (TO_Y) = (FROM_Y);\
+ (TO_U) = DB__ / D(3.069);\
+ (TO_V) = DR__ / D(-2.169);\
+ } while (0)
+
+#define SRGB_TO_YUV\
+ MATRIX( 0.29899999999999998800959133404830936342477798461914,\
+ 0.58699999999999996624922005139524117112159729003906,\
+ 0.11400000000000000410782519111307919956743717193604,\
+ -0.14662756598240470062854967636667424812912940979004,\
+ -0.28771586836102963635752871596196200698614120483398,\
+ 0.43434343434343436474165400795754976570606231689453,\
+ 0.61456892577224520035628074765554629266262054443359,\
+ -0.51452282157676354490405401520547457039356231689453,\
+ -0.10004610419548178035231700278018251992762088775635)
+
+#define CIEXYZ_TO_YUV\
+ MATRIX( 0.40627729168038273499519164033699780702590942382812,\
+ 0.61835674212166968910509012857801280915737152099609,\
+ -0.00414330221353725880462093300593551248311996459961,\
+ -0.17209697328971895746718701047939248383045196533203,\
+ -0.40298951295605395239718404809536878019571304321289,\
+ 0.52034135430408912093014350830344483256340026855469,\
+ 2.48462044709130047692724474472925066947937011718750,\
+ -1.88951420176453876997868519538315013051033020019531,\
+ -0.43353409663735725798616726933687459677457809448242)
+
+#define SRGB_TO_YPBPR(FROM_R, FROM_G, FROM_B, TO_Y, TO_PB, TO_PR)\
+ do {\
+ TYPE R__ = (FROM_R), G__ = (FROM_G), B__ = (FROM_B);\
+ TYPE Y__ = R__ * D(0.2126) +\
+ G__ * D(0.7152) +\
+ B__ * D(0.0722);\
+ (TO_Y) = Y__;\
+ (TO_PB) = B__ - Y__;\
+ (TO_PR) = R__ - Y__;\
+ } while (0)
+
+#define CIEXYZ_TO_YPBPR\
+ MATRIX(-0.00028314209073960778378920011277841695118695497513,\
+ 1.00019821310075673892470149439759552478790283203125,\
+ 0.00006512054470741990286342115723527967929840087891,\
+ 0.05592664565509243568275365987574332393705844879150,\
+ -1.20422439283671711685030913940863683819770812988281,\
+ 1.05716144717799576113748116767965257167816162109375,\
+ 3.24072939673847715269516811531502753496170043945312,\
+ -2.53733297492083753610359053709544241428375244140625,\
+ -0.49859531356743613805804216099204495549201965332031)
+
+#define SRGB_TO_YCGCO\
+ MATRIX( 0.25, 0.50, 0.25,\
+ -0.25, 0.50, -0.25,\
+ 0.50, 0., -0.50)
+
+#define CIEXYZ_TO_YCGCO\
+ MATRIX( 0.33938913643068269188063368346774950623512268066406,\
+ 0.50271574450517486631895280879689380526542663574219,\
+ 0.16045211478220866574417868832824751734733581542969,\
+ -1.30865574267536244335019546269904822111129760742188,\
+ 1.37329621528319534284889869013568386435508728027344,\
+ -0.11889607256777862120955546743061859160661697387695,\
+ 1.59240137554169236544510113162687048316001892089844,\
+ -0.66655429104206020962664069884340278804302215576172,\
+ -0.77787838037271606062006412685150280594825744628906)
+
+#define CIEUVW_TO_CIE1960UCS(FROM_U, FROM_V, FROM_W, TO_U, TO_V, TO_Y, FROM_U0, FROM_V0)\
+ do {\
+ TYPE U__ = (FROM_U), V__ = (FROM_V), W__ = (FROM_W), Y__;\
+ Y__ = (W__ + 17) / 25;\
+ Y__ *= Y__ * Y__;\
+ W__ *= 13;\
+ (TO_U) = U__ / W__ + (FROM_U0);\
+ (TO_V) = V__ / W__ + (FROM_V0);\
+ (TO_Y) = Y__;\
+ } while (0)
+
+#define CIEXYZ_TO_CIE1960UCS(FROM_X, FROM_Y, FROM_Z, TO_U, TO_V, TO_Y)\
+ do {\
+ TYPE X__ = (FROM_X), Y__ = (FROM_Y), w__;\
+ w__ = X__ + 15 * Y__ + 3 * (FROM_Z);\
+ (TO_U) = 4 * X__ / w__;\
+ (TO_V) = 6 * Y__ / w__;\
+ (TO_Y) = Y__;\
+ } while (0)
+
+#define CIEUVW_TO_CIEUVW(FROM_U, FROM_V, FROM_W, TO_U, TO_V, TO_W, FROM_U0, FROM_V0, TO_U0, TO_V0)\
+ do {\
+ TYPE U__ = (FROM_U), V__ = (FROM_V), W__ = (FROM_W);\
+ TYPE w__ = W__ * 13;\
+ U__ += w__ * ((FROM_U0) - (TO_U0));\
+ V__ += w__ * ((FROM_V0) - (TO_V0));\
+ (TO_U) = U__;\
+ (TO_V) = V__;\
+ (TO_W) = W__;\
+ } while (0)
+
+#define CIE1960UCS_TO_CIEUVW(FROM_U, FROM_V, FROM_Y, TO_U, TO_V, TO_W, TO_U0, TO_V0)\
+ do {\
+ TYPE U__ = (FROM_U), V__ = (FROM_V), u0__ = (TO_U0), v0__ = (TO_V0);\
+ TYPE Y__ = 25 * xcbrt((FROM_Y)) - 17;\
+ TYPE w__ = Y__ * 13;\
+ (TO_U) = w__ * (U__ - u0__);\
+ (TO_V) = w__ * (V__ - v0__);\
+ (TO_W) = Y__;\
+ } while (0)