/*
* Load reference 16x9 area for luma 4x4 MC
* Copyright © <2010>, Intel Corporation.
*
* This program is licensed under the terms and conditions of the
* Eclipse Public License (EPL), version 1.0. The full text of the EPL is at
* http://www.opensource.org/licenses/eclipse-1.0.php.
*
*/
// Kernel name: LoadRef_Y_16x9.asm
//
// Load reference 16x9 area for luma 4x4 MC
//#if !defined(__LOADREF_Y_16x9__) // Make sure this is only included once
//#define __LOADREF_Y_16x9__
#if 1
// Compute integer and fractional components of MV
and (2) gMVX_FRAC<1>:w r[pMV,0]<2;2,1>:w 0x03:w //{NoDDClr}
asr (2) gMVX_INT<1>:w r[pMV,0]<2;2,1>:w 0x02:w //{NoDDChk}
// Check whether MVY is integer
or.z.f0.1 (8) null:w gMVY_FRAC<0;1,0>:w 0:w
// Set message descriptor
(f0.1) add (1) pMSGDSC:ud gMSGDSC_R:ud RESP_LEN(2):ud
(-f0.1) add (1) pMSGDSC:ud gMSGDSC_R:ud RESP_LEN(5):ud
// Compute top-left corner position to be loaded
// TODO: sel
(-f0.1) add (2) gMSGSRC.0<1>:d gMVX_INT<2;2,1>:w -0x02:d //{NoDDClr}
(-f0.1) mov (1) gMSGSRC.2:ud 0x00080008:ud //{NoDDChk}
(f0.1) add (1) gMSGSRC.0<1>:d gMVX_INT<0;1,0>:w -0x02:d //{NoDDClr}
(f0.1) mov (1) gMSGSRC.1<1>:d gMVY_INT<0;1,0>:w //{NoDDChk,NoDDClr}
(f0.1) mov (1) gMSGSRC.2:ud 0x00030008:ud //{NoDDChk}
// Read 16x9 pixels
send (8) gudREF(0)<1> mMSGHDRY gMSGSRC<8;8,1>:ud DAPREAD pMSGDSC:ud
#else
// Compute integer and fractional components of MV
and (2) gMVX_FRAC<1>:w r[pMV,0]<2;2,1>:w 0x03:w {NoDDClr} //
asr (2) gMVX_INT<1>:w r[pMV,0]<2;2,1>:w 0x02:w {NoDDChk} //
// Set message descriptor
add (1) pMSGDSC:ud gMSGDSC_R:ud RESP_LEN(5):ud
// Compute top-left corner position to be loaded
add (2) gMSGSRC.0<1>:d gMVX_INT<2;2,1>:w -0x02:d {NoDDClr} //
mov (1) gMSGSRC.2:ud 0x00080008:ud {NoDDChk} //
// Read 16x9 pixels
send (8) gudREF(0)<1> mMSGHDRY gMSGSRC<8;8,1>:ud DAPREAD pMSGDSC:ud
#endif
//#endif // !defined(__LOADREF_Y_16x9__)