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/*
* Blackfin Pixel Operations
* Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/bfin/asm.h"
/*
motion compensation
primitives
* Halfpel motion compensation with rounding (a+b+1)>>1.
* This is an array[4][4] of motion compensation funcions for 4
* horizontal blocksizes (8,16) and the 4 halfpel positions<br>
* *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ]
* @param block destination where the result is stored
* @param pixels source
* @param line_size number of bytes in a horizontal line of block
* @param h height
*/
DEFUN(put_pixels8uc,mL1,
(uint8_t *block, const uint8_t *s0, const uint8_t *s1,
int dest_size, int line_size, int h)):
i3=r0; // dest
i0=r1; // src0
i1=r2; // src1
r0=[sp+12]; // dest_size
r2=[sp+16]; // line_size
p0=[sp+20]; // h
[--sp] = (r7:6);
r0+=-4;
m3=r0;
r2+=-8;
m0=r2;
LSETUP(pp8$0,pp8$1) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
pp8$0: DISALGNEXCPT || R1 = [I0++] || R3 =[I1++];
R6 = BYTEOP1P(R1:0,R3:2) || R0 = [I0++M0]|| R2 =[I1++M0];
R7 = BYTEOP1P(R1:0,R3:2)(R) || R0 = [I0++] || [I3++] = R6 ;
pp8$1: DISALGNEXCPT || R2 = [I1++] || [I3++M3] = R7;
(r7:6) = [sp++];
RTS;
DEFUN_END(put_pixels8uc)
DEFUN(put_pixels16uc,mL1,
(uint8_t *block, const uint8_t *s0, const uint8_t *s1,
int dest_size, int line_size, int h)):
link 0;
[--sp] = (r7:6);
i3=r0; // dest
i0=r1; // src0
i1=r2; // src1
r0=[fp+20]; // dest_size
r2=[fp+24]; // line_size
p0=[fp+28]; // h
r0+=-12;
m3=r0; // line_size
r2+=-16;
m0=r2;
LSETUP(pp16$0,pp16$1) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
pp16$0: DISALGNEXCPT || R1 = [I0++] || R3 =[I1++];
R6 = BYTEOP1P(R1:0,R3:2) || R0 = [I0++] || R2 =[I1++];
R7 = BYTEOP1P(R1:0,R3:2)(R) || R1 = [I0++] || R3 =[I1++];
[I3++] = R6;
R6 = BYTEOP1P(R1:0,R3:2) || R0 = [I0++M0] || R2 =[I1++M0];
R7 = BYTEOP1P(R1:0,R3:2)(R) || R0 = [I0++] || [I3++] = R7 ;
[I3++] = R6;
pp16$1: DISALGNEXCPT || R2 = [I1++] || [I3++M3] = R7;
(r7:6) = [sp++];
unlink;
RTS;
DEFUN_END(put_pixels16uc)
DEFUN(z_put_pixels16_xy2,mL1,
(uint8_t *block, const uint8_t *s0,
int dest_size, int line_size, int h)):
link 0;
[--sp] = (r7:4);
i3=r0; // dest
i0=r1; // src0--> pixels
i1=r1; // src1--> pixels + line_size
r2+=-12;
m2=r2; // m2=dest_width-4
r2=[fp+20];
m3=r2; // line_size
p0=[fp+24]; // h
r2+=-16;
i1+=m3; /* src1 + line_size */
m0=r2; /* line-size - 20 */
B0 = I0;
B1 = I1;
B3 = I3;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
LSETUP(LS$16E,LE$16E) LC0=P0;
LS$16E: DISALGNEXCPT || R1 = [I0++] || R3 =[I1++];
R4 = BYTEOP2P (R3:2,R1:0) (RNDL) || R0 = [I0++] || R2 =[I1++];
R5 = BYTEOP2P (R3:2,R1:0) (RNDL,R) || R1 = [I0++] || [I3++] = R4 ;
DISALGNEXCPT || R3 = [I1++] || [I3++] = R5;
R4 = BYTEOP2P (R3:2,R1:0) (RNDL) || R0 = [I0++M0]|| R2 = [I1++M0];
R5 = BYTEOP2P (R3:2,R1:0) (RNDL,R) || R0 = [I0++] || [I3++] = R4 ;
LE$16E: DISALGNEXCPT || R2 = [I1++] || [I3++M2] = R5;
M1 = 1;
I3 = B3;
I1 = B1;
I0 = B0;
I0 += M1;
I1 += M1;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
LSETUP(LS$16O,LE$16O) LC0=P0;
LS$16O: DISALGNEXCPT || R1 = [I0++] || R3 =[I1++];
R4 = BYTEOP2P (R3:2,R1:0) (RNDH) || R0 = [I0++] || R2 =[I1++];
R5 = BYTEOP2P (R3:2,R1:0) (RNDH,R) || R1 = [I0++] || R6 =[I3++];
R4 = R4 +|+ R6 || R7 = [I3--];
R5 = R5 +|+ R7 || [I3++] = R4;
DISALGNEXCPT || R3 =[I1++] || [I3++] = R5;
R4 = BYTEOP2P (R3:2,R1:0) (RNDH) || R0 = [I0++M0]|| R2 = [I1++M0];
R5 = BYTEOP2P (R3:2,R1:0) (RNDH,R) || R0 = [I0++] || R6 = [I3++];
R4 = R4 +|+ R6 || R7 = [I3--];
R5 = R5 +|+ R7 || [I3++] = R4;
LE$16O: DISALGNEXCPT || R2 = [I1++] || [I3++M2] = R5;
(r7:4) = [sp++];
unlink;
rts;
DEFUN_END(z_put_pixels16_xy2)
DEFUN(z_put_pixels8_xy2,mL1,
(uint8_t *block, const uint8_t *s0,
int dest_size, int line_size, int h)):
link 0;
[--sp] = (r7:4);
i3=r0; // dest
i0=r1; // src0--> pixels
i1=r1; // src1--> pixels + line_size
r2+=-4;
m2=r2; // m2=dest_width-4
r2=[fp+20];
m3=r2; // line_size
p0=[fp+24]; // h
r2+=-8;
i1+=m3; /* src1 + line_size */
m0=r2; /* line-size - 20 */
b0 = I0;
b1 = I1;
b3 = I3;
LSETUP(LS$8E,LE$8E) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
LS$8E: DISALGNEXCPT || R1 = [I0++] || R3 =[I1++];
R4 = BYTEOP2P (R3:2,R1:0) (RNDL) || R0 = [I0++M0] || R2 =[I1++M0];
R5 = BYTEOP2P (R3:2,R1:0) (RNDL,R) || R0 = [I0++] || [I3++] = R4 ;
LE$8E: DISALGNEXCPT || R2 = [I1++] || [I3++M2] = R5;
M1 = 1;
I3 = b3;
I1 = b1;
I0 = b0;
I0 += M1;
I1 += M1;
LSETUP(LS$8O,LE$8O) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
LS$8O: DISALGNEXCPT || R1 = [I0++] || R3 =[I1++];
R4 = BYTEOP2P (R3:2,R1:0) (RNDH) || R0 = [I0++M0] || R2 =[I1++M0];
R5 = BYTEOP2P (R3:2,R1:0) (RNDH,R) || R0 = [I0++] || R6 =[I3++];
R4 = R4 +|+ R6 || R7 = [I3--];
R5 = R5 +|+ R7 || [I3++] = R4;
LE$8O: DISALGNEXCPT || R2 =[I1++] || [I3++M2] = R5;
(r7:4) = [sp++];
unlink;
rts;
DEFUN_END(z_put_pixels8_xy2)
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