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/*
* Interpolation kernel for luminance motion compensation
* Copyright © <2010>, Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* This file was originally licensed under the following license
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
// Kernel name: Interpolate_Y_8x8.asm
//
// Interpolation kernel for luminance motion compensation
//
// $Revision: 13 $
// $Date: 10/09/06 4:00p $
//
//---------------------------------------------------------------
// In: pMV => Source address of MV
// In: gMVX_FRAC<2;2,1>:w => MV fractional components
// In: f0.1 (1) => If 1, vertical MV is integer
// In: gpINTPY:uw => Destination address for interpolated result
// In: Reference area staring from R43
// If horizontal/vertical MVs are all integer, 8x8 pixels are on R43~R44 (2 GRFs)
// If only horz MV is integer, 8x13 pixels are on R43~R46 (4 GRFs)
// If only vert MV is integer, 13x8 pixels are on R43~R46 (4 GRFs)
// If no MVs are integer, 13x13 pixels are on R43~R49 (7 GRFs)
//---------------------------------------------------------------
INTERLABEL(Interpolate_Y_8x8_Func):
// Check whether MVX is integer MV
and.z.f0.0 (1) null:w r[pMV,0]<0;1,0>:w 0x3:w
(-f0.0) jmpi (1) INTERLABEL(Interpolate_Y_8x8_Func2)
// TODO: remove this back-to-back read - huge latency..
mov (8) gubREF(6,2)<1> gubREF(3,0)<8;8,1>
mov (8) gubREF(5,18)<1> gubREF(2,24)<8;8,1> {NoDDClr}
mov (8) gubREF(5,2)<1> gubREF(2,16)<8;8,1> {NoDDChk}
mov (8) gubREF(4,18)<1> gubREF(2,8)<8;8,1> {NoDDClr}
mov (8) gubREF(4,2)<1> gubREF(2,0)<8;8,1> {NoDDChk}
mov (8) gubREF(3,18)<1> gubREF(1,24)<8;8,1> {NoDDClr}
mov (8) gubREF(3,2)<1> gubREF(1,16)<8;8,1> {NoDDChk}
mov (8) gubREF(2,18)<1> gubREF(1,8)<8;8,1> {NoDDClr}
mov (8) gubREF(2,2)<1> gubREF(1,0)<8;8,1> {NoDDChk}
mov (8) gubREF(1,18)<1> gubREF(0,24)<8;8,1> {NoDDClr}
mov (8) gubREF(1,2)<1> gubREF(0,16)<8;8,1> {NoDDChk}
mov (8) gubREF(0,18)<1> gubREF(0,8)<8;8,1>
mov (8) gubREF(0,2)<1> gubREF(0,0)<8;8,1>
INTERLABEL(Interpolate_Y_8x8_Func2):
// Compute the GRF address of the starting position of the reference area
(-f0.1) mov (1) pREF:w nOFFSET_REF+2+nGRFWIB:w
(f0.1) mov (1) pREF:w nOFFSET_REF+2:w
mov (1) pRESULT:uw gpINTPY:uw
/*
* | |
* - - 0 1 2 3 + -
* 4 5 6 7
* 8 9 A B
* C D E F
* - - + - - - + -
* | |
*/
// Case 0
or.z.f0.1 (16) null:w gMVY_FRAC<0;1,0>:w gMVX_FRAC<0;1,0>:w
(f0.1) mov (16) r[pRESULT]<1>:uw r[pREF]<16;8,1>:ub
(f0.1) mov (16) r[pRESULT,nGRFWIB]<1>:uw r[pREF,nGRFWIB]<16;8,1>:ub
(f0.1) mov (16) r[pRESULT,nGRFWIB*2]<1>:uw r[pREF,nGRFWIB*2]<16;8,1>:ub
(f0.1) mov (16) r[pRESULT,nGRFWIB*3]<1>:uw r[pREF,nGRFWIB*3]<16;8,1>:ub
(f0.1) jmpi INTERLABEL(Exit_Interpolate_Y_8x8)
// Store all address registers
mov (8) gpADDR<1>:w a0<8;8,1>:w
mul.z.f0.0 (1) gW4:w gMVY_FRAC:w gMVX_FRAC:w
add (1) pREF1:uw pREF0:uw nGRFWIB/2:uw
and.nz.f0.1 (1) null gW4:w 1:w
add (2) pREF2<1>:uw pREF0<2;2,1>:uw nGRFWIB:uw
mov (4) gW0<1>:uw pREF0<4;4,1>:uw
(f0.0) jmpi INTERLABEL(Interpolate_Y_H_8x8)
(f0.1) jmpi INTERLABEL(Interpolate_Y_H_8x8)
//-----------------------------------------------------------------------
// CASE: A69BE (H/V interpolation)
//-----------------------------------------------------------------------
// Compute interim horizontal intepolation of 12 lines (not 9 lines)
// add (1) pREF0<1>:ud pREF0<0;1,0>:ud 0xffeeffde:ud // (-18<<16)|(-34)
add (1) pREF0<1>:uw pREF0<0;1,0>:uw -34:w
add (1) pREF1<1>:uw pREF1<0;1,0>:uw -18:w {NoDDClr}
mov (1) pRESD:ud nOFFSET_INTERIM3:ud {NoDDChk}
// Check whether this position is 'A'
cmp.e.f0.0 (1) null gW4:w 4:w
$for(0;<6;2) {
add (32) acc0<1>:w r[pREF,nGRFWIB*%1]<16;8,1>:ub r[pREF0,nGRFWIB*%1+5]<16;8,1>:ub {Compr}
mac (32) acc0<1>:w r[pREF,nGRFWIB*%1+1]<16;8,1>:ub -5:w {Compr}
mac (32) acc0<1>:w r[pREF,nGRFWIB*%1+2]<16;8,1>:ub 20:w {Compr}
mac (32) acc0<1>:w r[pREF,nGRFWIB*%1+3]<16;8,1>:ub 20:w {Compr}
mac (32) r[pRES,nGRFWIB*%1]<1>:w r[pREF,nGRFWIB*%1+4]<16;8,1>:ub -5:w {Compr}
}
// last line
add (8) acc0<1>:w r[pREF,nGRFWIB*6]<8;8,1>:ub r[pREF,nGRFWIB*6+5]<8;8,1>:ub
mac (8) acc0<1>:w r[pREF,nGRFWIB*6+1]<8;8,1>:ub -5:w
mac (8) acc0<1>:w r[pREF,nGRFWIB*6+2]<8;8,1>:ub 20:w
mac (8) acc0<1>:w r[pREF,nGRFWIB*6+3]<8;8,1>:ub 20:w
mac (8) r[pRES,nGRFWIB*6]<1>:w r[pREF,nGRFWIB*6+4]<8;8,1>:ub -5:w
// Compute interim/output vertical interpolation
mov (1) pREF0:ud nOFFSET_INTERIM2:ud {NoDDClr} // set pREF0 and pREF1 at the same time
mov (1) pREF2D:ud nOFFSET_INTERIM4:ud {NoDDChk,NoDDClr} // set pREF2 and pREF3 at the same time
(f0.0) sel (1) pRES:uw gpINTPY:uw nOFFSET_INTERIM:uw {NoDDChk} // Case A vs. 69BE
$for(0;<4;2) {
add (32) acc0<1>:w r[pREF0,nGRFWIB*%1]<16;16,1>:w 512:w {Compr}
mac (16) acc0<1>:w r[pREF2,nGRFWIB*%1]<8,1>:w -5:w
mac (16) acc1<1>:w r[pREF2,nGRFWIB*%1+nGRFWIB]<8,1>:w -5:w
mac (32) acc0<1>:w r[pREF0,nGRFWIB*%1+nGRFWIB]<16;16,1>:w 20:w {Compr}
mac (16) acc0<1>:w r[pREF2,nGRFWIB*%1+nGRFWIB]<8,1>:w 20:w
mac (16) acc1<1>:w r[pREF2,nGRFWIB*%1+nGRFWIB+nGRFWIB]<8,1>:w 20:w
mac (32) acc0<1>:w r[pREF0,(2+%1)*nGRFWIB]<16;16,1>:w -5:w {Compr}
mac (16) acc0<1>:w r[pREF2,(2+%1)*nGRFWIB]<8,1>:w 1:w
mac (16) acc1<1>:w r[pREF2,(2+%1)*nGRFWIB+nGRFWIB]<8,1>:w 1:w
asr.sat (16) r[pRES,nGRFWIB*%1]<2>:ub acc0<16;16,1>:w 10:w
asr.sat (16) r[pRES,nGRFWIB*%1+nGRFWIB]<2>:ub acc1<16;16,1>:w 10:w {SecHalf}
}
(f0.0) jmpi INTERLABEL(Return_Interpolate_Y_8x8)
INTERLABEL(Interpolate_Y_H_8x8):
cmp.e.f0.0 (1) null gMVX_FRAC:w 0:w
cmp.e.f0.1 (1) null gMVY_FRAC:w 2:w
(f0.0) jmpi INTERLABEL(Interpolate_Y_V_8x8)
(f0.1) jmpi INTERLABEL(Interpolate_Y_V_8x8)
//-----------------------------------------------------------------------
// CASE: 123567DEF (H interpolation)
//-----------------------------------------------------------------------
add (4) pREF0<1>:uw gW0<4;4,1>:uw -2:w
cmp.g.f0.0 (4) null:w gMVY_FRAC<0;1,0>:w 2:w
cmp.e.f0.1 (1) null gMVX_FRAC:w 2:w
(f0.0) add (4) pREF0<1>:uw pREF0<4;4,1>:uw nGRFWIB/2:uw
cmp.e.f0.0 (1) null:w gMVY_FRAC<0;1,0>:w 0:w
(f0.1) sel (1) pRES:uw gpINTPY:uw nOFFSET_INTERIM:uw // Case 26E vs. 1357DF
// Compute interim/output horizontal interpolation
$for(0;<4;2) {
add (16) acc0<1>:w r[pREF0,nGRFWIB*%1]<8,1>:ub 16:w
add (16) acc1<1>:w r[pREF0,nGRFWIB*%1+nGRFWIB]<8,1>:ub 16:w
mac (16) acc0<1>:w r[pREF0,nGRFWIB*%1+1]<8,1>:ub -5:w
mac (16) acc1<1>:w r[pREF0,nGRFWIB*%1+1+nGRFWIB]<8,1>:ub -5:w
mac (16) acc0<1>:w r[pREF0,nGRFWIB*%1+2]<8,1>:ub 20:w
mac (16) acc1<1>:w r[pREF0,nGRFWIB*%1+2+nGRFWIB]<8,1>:ub 20:w
mac (16) acc0<1>:w r[pREF0,nGRFWIB*%1+3]<8,1>:ub 20:w
mac (16) acc1<1>:w r[pREF0,nGRFWIB*%1+3+nGRFWIB]<8,1>:ub 20:w
mac (16) acc0<1>:w r[pREF0,nGRFWIB*%1+4]<8,1>:ub -5:w
mac (16) acc1<1>:w r[pREF0,nGRFWIB*%1+4+nGRFWIB]<8,1>:ub -5:w
mac (16) acc0<1>:w r[pREF0,nGRFWIB*%1+5]<8,1>:ub 1:w
mac (16) acc1<1>:w r[pREF0,nGRFWIB*%1+5+nGRFWIB]<8,1>:ub 1:w
asr.sat (16) r[pRES,nGRFWIB*%1]<2>:ub acc0<16;16,1>:w 5:w
asr.sat (16) r[pRES,nGRFWIB*%1+nGRFWIB]<2>:ub acc1<16;16,1>:w 5:w {SecHalf}
}
(-f0.1) jmpi INTERLABEL(Interpolate_Y_V_8x8)
(-f0.0) jmpi INTERLABEL(Average_8x8)
jmpi INTERLABEL(Return_Interpolate_Y_8x8)
INTERLABEL(Interpolate_Y_V_8x8):
cmp.e.f0.0 (1) null gMVY_FRAC:w 0:w
(f0.0) jmpi INTERLABEL(Interpolate_Y_I_8x8)
//-----------------------------------------------------------------------
// CASE: 48C59D7BF (V interpolation)
//-----------------------------------------------------------------------
mov (2) pREF0<1>:uw gW0<4;2,2>:uw {NoDDClr}
mov (2) pREF2<1>:uw gW1<2;2,1>:uw {NoDDChk,NoDDClr}
mov (1) pRES:uw gpINTPY:uw {NoDDChk}
cmp.g.f0.1 (4) null:w gMVX_FRAC<0;1,0>:w 2:w
cmp.e.f0.0 (1) null:w gMVX_FRAC<0;1,0>:w 0:w
(f0.1) add (4) pREF0<1>:uw pREF0<4;4,1>:uw 1:uw
cmp.e.f0.1 (1) null gMVY_FRAC:w 2:w
(-f0.0) jmpi INTERLABEL(VFILTER_8x8)
(-f0.1) mov (1) pRES:uw nOFFSET_INTERIM:uw
INTERLABEL(VFILTER_8x8):
// Compute interim/output vertical interpolation
$for(0;<4;2) {
add (32) acc0<1>:w r[pREF0,nGRFWIB*%1-nGRFWIB]<16;8,1>:ub 16:w {Compr}
mac (16) acc0<1>:w r[pREF2,nGRFWIB*%1-nGRFWIB]<8,1>:ub -5:w
mac (16) acc1<1>:w r[pREF2,nGRFWIB*%1]<8,1>:ub -5:w
mac (32) acc0<1>:w r[pREF0,nGRFWIB*%1]<16;8,1>:ub 20:w {Compr}
mac (16) acc0<1>:w r[pREF2,nGRFWIB*%1]<8,1>:ub 20:w
mac (16) acc1<1>:w r[pREF2,nGRFWIB*%1+nGRFWIB]<8,1>:ub 20:w
mac (32) acc0<1>:w r[pREF0,nGRFWIB*%1+nGRFWIB]<16;8,1>:ub -5:w {Compr}
mac (16) acc0<1>:w r[pREF2,nGRFWIB*%1+nGRFWIB]<8,1>:ub 1:w
mac (16) acc1<1>:w r[pREF2,nGRFWIB*%1+nGRFWIB+nGRFWIB]<8,1>:ub 1:w
asr.sat (16) r[pRES,nGRFWIB*%1]<2>:ub acc0<16;16,1>:w 5:w
asr.sat (16) r[pRES,nGRFWIB*%1+nGRFWIB]<2>:ub acc1<16;16,1>:w 5:w {SecHalf}
}
(-f0.0) jmpi INTERLABEL(Average_8x8)
(f0.1) jmpi INTERLABEL(Return_Interpolate_Y_8x8)
INTERLABEL(Interpolate_Y_I_8x8):
//-----------------------------------------------------------------------
// CASE: 134C (Integer position)
//-----------------------------------------------------------------------
mov (2) pREF0<1>:uw gW0<2;2,1>:uw {NoDDClr}
mov (1) pRES:uw gpINTPY:uw {NoDDChk}
cmp.e.f0.0 (2) null:w gMVX_FRAC<0;1,0>:w 3:w
cmp.e.f0.1 (2) null:w gMVY_FRAC<0;1,0>:w 3:w
(f0.0) add (2) pREF0<1>:uw pREF0<2;2,1>:uw 1:uw
(f0.1) add (2) pREF0<1>:uw pREF0<2;2,1>:uw nGRFWIB/2:uw
mov (16) r[pRES]<1>:uw r[pREF0]<8,1>:ub
mov (16) r[pRES,nGRFWIB]<1>:uw r[pREF0,nGRFWIB]<8,1>:ub
mov (16) r[pRES,nGRFWIB*2]<1>:uw r[pREF0,nGRFWIB*2]<8,1>:ub
mov (16) r[pRES,nGRFWIB*3]<1>:uw r[pREF0,nGRFWIB*3]<8,1>:ub
INTERLABEL(Average_8x8):
//-----------------------------------------------------------------------
// CASE: 13456789BCDEF (Average)
//-----------------------------------------------------------------------
// Average two interim results
avg.sat (16) r[pRES,0]<2>:ub r[pRES,0]<32;16,2>:ub gubINTERIM_BUF(0)
avg.sat (16) r[pRES,nGRFWIB]<2>:ub r[pRES,nGRFWIB]<32;16,2>:ub gubINTERIM_BUF(1)
avg.sat (16) r[pRES,nGRFWIB*2]<2>:ub r[pRES,nGRFWIB*2]<32;16,2>:ub gubINTERIM_BUF(2)
avg.sat (16) r[pRES,nGRFWIB*3]<2>:ub r[pRES,nGRFWIB*3]<32;16,2>:ub gubINTERIM_BUF(3)
INTERLABEL(Return_Interpolate_Y_8x8):
// Restore all address registers
mov (8) a0<1>:w gpADDR<8;8,1>:w
INTERLABEL(Exit_Interpolate_Y_8x8):
// end of file
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