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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 5361 | serge | 1 | /* |
| 2 | * Interpolation kernel for chrominance 2x2 motion compensation |
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| 3 | * Copyright © <2010>, Intel Corporation. |
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| 4 | * |
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| 5 | * This program is licensed under the terms and conditions of the |
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| 6 | * Eclipse Public License (EPL), version 1.0. The full text of the EPL is at |
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| 7 | * http://www.opensource.org/licenses/eclipse-1.0.php. |
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| 8 | * |
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| 9 | */ |
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| 10 | // Kernel name: Interpolate_C_2x2.asm |
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| 11 | // |
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| 12 | // Interpolation kernel for chrominance 2x2 motion compensation |
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| 13 | // |
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| 14 | // $Revision: 8 $ |
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| 15 | // $Date: 10/09/06 4:00p $ |
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| 16 | // |
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| 17 | |||
| 18 | |||
| 19 | //#if !defined(__Interpolate_C_2x2__) // Make sure this is only included once |
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| 20 | //#define __Interpolate_C_2x2__ |
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| 21 | |||
| 22 | |||
| 23 | // (8-xFrac) and (8-yFrac) |
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| 24 | add (2) gW0<1>:w gMVX_FRACC<2;2,1>:w -0x08:w |
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| 25 | |||
| 26 | // Compute the GRF address of the starting position of the reference area |
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| 27 | mov (1) pREF0:w nOFFSET_REFC:w {NoDDClr} |
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| 28 | mov (1) pRESULT:uw gpINTPC:uw {NoDDChk} |
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| 29 | |||
| 30 | // gCOEFA = (8-xFrac)*(8-yFrac) |
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| 31 | // gCOEFB = xFrac*(8-yFrac) |
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| 32 | // gCOEFC = (8-xFrac)*yFrac |
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| 33 | // gCOEFD = xFrac*yFrac |
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| 34 | mul (1) gCOEFD:w gMVX_FRACC:w gMVY_FRACC:w {NoDDClr} |
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| 35 | mul (1) gCOEFA:w -gW0:w -gW1:uw {NoDDClr,NoDDChk} |
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| 36 | mul (1) gCOEFB:w gMVX_FRACC:w -gW1:uw {NoDDClr,NoDDChk} |
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| 37 | mul (1) gCOEFC:w -gW0:w gMVY_FRACC:w {NoDDChk} |
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| 38 | |||
| 39 | // (8-xFrac)*(8-yFrac)*A |
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| 40 | // --------------------- |
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| 41 | mul (8) acc0<1>:uw r[pREF0,0]<8;4,1>:ub gCOEFA:uw |
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| 42 | |||
| 43 | // xFrac*(8-yFrac)*B |
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| 44 | // ------------------- |
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| 45 | mac (8) acc0<1>:uw r[pREF0,2]<8;4,1>:ub gCOEFB:uw |
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| 46 | |||
| 47 | // (8-xFrac)*yFrac*C |
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| 48 | // ------------------- |
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| 49 | mac (8) acc0<1>:uw r[pREF0,8]<8;4,1>:ub gCOEFC:uw |
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| 50 | |||
| 51 | // xFrac*yFrac*D |
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| 52 | // ----------------- |
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| 53 | mac (8) gwINTERIM_BUF2(0)<1> r[pREF0,10]<8;4,1>:ub gCOEFD:uw |
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| 54 | mov (4) r[pRESULT]<1>:uw gwINTERIM_BUF2(0)<4;4,1> {NoDDClr} |
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| 55 | mov (4) r[pRESULT,16]<1>:uw gwINTERIM_BUF2(0,4)<4;4,1> {NoDDChk} |
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| 56 | |||
| 57 | //#endif // !defined(__Interpolate_C_2x2__) |