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FFmpeg/libavcodec/bfin/dsputil.S

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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"
DEFUN(put_pixels_clamped,mL1,
(int16_t *block, uint8_t *dest, int line_size)):
[--SP] = (R7:4);
R4 = 0;
R5.l = 0x00ff;
R5.h = 0x00ff;
I0 = R0; // block
I1 = R1; // dest
R2 += -4; // line_size
M1 = R2;
P0 = 8;
R0 = [I0++];
R1 = [I0++];
R2 = MAX(R0, R4) (V);
LSETUP (ppc$0,ppc$1) LC0=P0;
ppc$0: R2 = MIN(R2, R5) (V);
R3 = MAX(R1, R4) (V);
R3 = MIN(R3, R5) (V) || R0 = [I0++];
R6 = BYTEPACK (R2,R3) || R1 = [I0++];
R2 = MAX(R0, R4) (V) || [I1++] = R6;
R2 = MIN(R2, R5) (V);
R3 = MAX(R1, R4) (V);
R3 = MIN(R3, R5) (V) || R0 = [I0++];
R6 = BYTEPACK (R2,R3) || R1 = [I0++];
ppc$1: R2 = Max(R0, R4) (V) || [I1++M1] = R6;
(R7:4) = [SP++];
RTS;
DEFUN_END(put_pixels_clamped)
DEFUN(add_pixels_clamped,mL1,
(int16_t *block, uint8_t *dest, int line_size)):
[-- SP] = (R7:4);
R4 = 0;
I0 = 0;
R2 += -4; // line_size
M0 = R2;
I1 = R1; // dest
I3 = R0; // block
I2 = R1; // dest
P0 = 8;
M3 = 2;
R0 = [I3++] || R2 = [I1];
R2 = R2 << 8 || R0.H = W[I3--] || R3 = [I1++];
R3 = R3 >> 8 || R1.L = W[I3] || I3 += 4;
R6 = BYTEOP3P(R1:0, R3:2) (LO) || R1.H = W[I3++] || R2 = [I1];
LSETUP(apc$2,apc$3) LC1 = P0;
apc$2: R7 = BYTEOP3P(R1:0, R3:2) (HI, R) || R0 = [I3++] || R3 = [I1++M0];
R2 = R2 << 8 || R0.H = W[I3--];
R3 = R3 >> 8 || R1.L = W[I3] || I3 += 4;
R6 = R6 + R7 (S) || R1.H = W[I3];
R6 = BYTEOP3P(R1:0, R3:2) (LO) || I3+=M3 || [I2++]=R6;
R7 = BYTEOP3P(R1:0, R3:2) (HI, R) || R0 = [I3++] || R2 = [I1];
R2 = R2 << 8 || R0.H = W[I3--] || R3 = [I1++];
R3 = R3 >> 8 || R1.L = W[I3] || I3 += 4;
R6 = R6 + R7 (S) || R1.H = W[I3++];
apc$3: R6 = BYTEOP3P(R1:0, R3:2) (LO) || [I2++M0] = R6 || R2 = [I1];
(R7:4) = [SP++];
RTS;
DEFUN_END(add_pixels_clamped)
DEFUN(diff_pixels,mL1,
(int16_t *block, uint8_t *s1, uint8_t *s2, int stride)):
link 0;
[--sp] = (r7:4);
p0=8;
i3=r0; // block
i0=r1; // s1
i1=r2; // s2
r2=[fp+20]; // stride
r2+=-8;
m0=r2;
LSETUP(.LS0,.LE0) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
.LS0: DISALGNEXCPT || R1 = [I0++] || R3 = [I1++];
(R5,R4) = BYTEOP16M (R1:0,R3:2) || R0 = [I0++M0] || R2 = [I1++M0];
(R7,R6) = BYTEOP16M (R1:0,R3:2) (R)|| R0 = [I0++] || [I3++] = R4;
DISALGNEXCPT || R2 = [I1++] || [I3++] = R5;
[i3++]=r6;
.LE0: [i3++]=r7;
(r7:4) = [sp++];
unlink;
rts;
DEFUN_END(diff_pixels)
/*
for (i = 0; i < 16; i++) {
for (j = 0; j < 16; j++) {
sum += pix[j];
}
pix += line_size;
}
*/
DEFUN(pix_sum,mL1,
(uint8_t *p, int stride)):
link 0;
[--sp] = (r7:4);
p0=8;
i0=r0; // s1
i1=r0;
m1=r1;
r1=r1+r1;
r1+=-16; // stride
m0=r1;
i1+=m1;
r6=0;
LSETUP(LS$PS,LE$PS) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
LS$PS: DISALGNEXCPT || R1 = [I0++] || R3 = [I1++];
(R5,R4) = BYTEOP16P (R3:2,R1:0) || R0 = [I0++] || R2 = [I1++];
r6=r6+|+r5;
r6=r6+|+r4;
(R5,R4) = BYTEOP16P (R3:2,R1:0) (R)|| R1 = [I0++] || R3 = [I1++];
r6=r6+|+r5;
r6=r6+|+r4;
(R5,R4) = BYTEOP16P (R3:2,R1:0) || R0 = [I0++m0] || R2 = [I1++m0];
r6=r6+|+r5;
r6=r6+|+r4;
(R5,R4) = BYTEOP16P (R3:2,R1:0) (R)|| R0 = [I0++] || R2 = [I1++];
r6=r6+|+r5;
LE$PS: r6=r6+|+r4;
r0.l=r6.l+r6.h;
r0.h=0;
(r7:4) = [sp++];
unlink;
rts;
DEFUN_END(pix_sum)
DEFUN(get_pixels,mL1,
(int16_t *restrict block, const uint8_t *pixels, int line_size)):
[--sp] = (r7:4);
i3=r0; // dest
i0=r1; // src0
p0=8;
r2+=-8;
m0=r2;
LSETUP(gp8$0,gp8$1) LC0=P0;
DISALGNEXCPT || R0 = [I0++];
DISALGNEXCPT || R1 = [I0++];
gp8$0: (R7,R6) = byteunpack R1:0 || R0 = [I0++M0];
(R5,R4) = byteunpack R1:0 (R) || R0 = [I0++] || [I3++]=R6;
DISALGNEXCPT || R1 = [I0++] || [I3++]=R7;
[I3++]=R4;
gp8$1: [I3++]=R5
(r7:4) = [sp++];
RTS;
DEFUN_END(get_pixels)
/* sad = sad16x16 (ubyte *mb, ubyte *refwin, srcwidth, refwinwidth, h) */
/* 91 cycles */
DEFUN(z_sad16x16,mL1,
(uint8_t *blk1, uint8_t *blk2, int dsz, int line_size, int h)):
link 0;
I0 = R0;
I1 = R1;
A1 = A0 = 0;
R0 = [sp+20]; // rwidth
P2 = [sp+24]; // height
R3 = 16;
R0 = R0 - R3;
R3 = R2 - R3;
M1 = R0;
M0 = R3;
DISALGNEXCPT || R0 = [I0++] || R2 = [I1++];
LSETUP (s$16, e$16) LC0=P2;
s$16: DISALGNEXCPT || R1 = [I0++] || R3 = [I1++];
SAA (R1:0,R3:2) || R0 = [I0++] || R2 = [I1++];
SAA (R1:0,R3:2) (R) || R1 = [I0++] || R3 = [I1++];
SAA (R1:0,R3:2) || R0 = [I0++M0] || R2 = [I1++M1];
e$16: SAA (R1:0,R3:2) (R) || R0 = [I0++] || R2 = [I1++];
R3=A1.L+A1.H, R2=A0.L+A0.H ;
R0 = R2 + R3 ;
unlink;
RTS;
DEFUN_END(z_sad16x16)
/* sad = sad8x8 (ubyte *mb, ubyte *refwin, int srcwidth, int refwinwidth, int h) */
/* 36 cycles */
DEFUN(z_sad8x8,mL1,
(uint8_t *blk1, uint8_t *blk2, int dsz, int line_size, int h)):
I0 = R0;
I1 = R1;
A1 = A0 = 0;
r0 = [sp+12]; // rwidth
P2 = [sp+16]; //height
R3 = 8;
R0 = R0 - R3;
R3 = R2 - R3;
M0 = R3;
M1 = R0;
LSETUP (s$8, e$8) LC0=P2;
DISALGNEXCPT || R0 = [I0++] || R2 = [I1++];
DISALGNEXCPT || R1 = [I0++] || R3 = [I1++];
s$8: SAA (R1:0,R3:2) || R0 = [I0++M0] || R2 = [I1++M1];
SAA (R1:0,R3:2) (R) || R0 = [I0++] || R2 = [I1++];
e$8: DISALGNEXCPT || R1 = [I0++] || R3 = [I1++];
R3=A1.L+A1.H, R2=A0.L+A0.H ;
R0 = R2 + R3 ;
RTS;
DEFUN_END(z_sad8x8)
DEFUN(pix_norm1,mL1,
(uint8_t * pix, int line_size)):
[--SP]=(R7:4,P5:3);
// Fetch the input arguments.
P1 = R0; // pix
P0 = R1; // line_size
P5 = 16; // loop ctr.
P0 -= P5;
M0 = P0; // M0 = line_size-16;
// Now for the real work.
A1 = A0 = 0;
lsetup(_pix_norm1_blkfn_loopStart, _pix_norm1_blkfn_loopEnd) LC1 = P5;
I0 = P1;
DISALGNEXCPT || r0 = [i0++];
_pix_norm1_blkfn_loopStart:
// following unpacks pix1[0..15] pix1+line_size[0..15]
DISALGNEXCPT || r1 = [i0++];
(r5, r4) = byteunpack r1:0 || r0 = [i0++];
a1 += r5.h * r5.h, a0 += r5.l * r5.l (is);
a1 += r4.h * r4.h, a0 += r4.l * r4.l (is);
(r5, r4) = byteunpack r1:0(r) || r1 = [i0++];
a1 += r5.h * r5.h, a0 += r5.l * r5.l (is);
a1 += r4.h * r4.h, a0 += r4.l * r4.l (is);
(r5, r4) = byteunpack r1:0 || r0 = [i0++M0];
a1 += r5.h * r5.h, a0 += r5.l * r5.l (is);
a1 += r4.h * r4.h, a0 += r4.l * r4.l (is);
(r5, r4) = byteunpack r1:0(r) || r0 = [i0++];
a1 += r5.h * r5.h, a0 += r5.l * r5.l (is);
_pix_norm1_blkfn_loopEnd:
a1 += r4.h * r4.h, a0 += r4.l * r4.l (is);
// Clean up at the end:
R2 = A0, R3 = A1;
R0 = R2 + R3 (S);
(R7:4,P5:3)=[SP++];
RTS;
DEFUN_END(pix_norm1)
DEFUN(sse4,mL1,
(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)):
link 0;
[--sp] = (r7:6);
p0=[fp+24]; // h
i0=r1; // pix1
i1=r2; // pix2
r2=[fp+20]; // line_size
r2+=-4;
m0=r2;
a0=a1=0;
LSETUP(.S40,.E40) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
.S40: DISALGNEXCPT || R1 = [I0++M0] || R3 = [I1++M0];
(R7,R6) = BYTEOP16M (R1:0,R3:2);
a0 += r7.l * r7.l, a1 += r7.h * r7.h (is);
.E40: a0 += r6.l * r6.l, a1 += r6.h * r6.h (is);
a0 += a1;
r0 = a0;
(r7:6) = [sp++];
unlink;
rts;
DEFUN_END(sse4)
DEFUN(sse8,mL1,
(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)):
link 0;
[--sp] = (r7:6);
p0=[fp+24]; // h
i0=r1; // pix1
i1=r2; // pix2
r2=[fp+20]; // line_size
r2+=-8;
m0=r2;
a0=a1=0;
LSETUP(.S80,.E80) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
.S80: DISALGNEXCPT || R1 = [I0++] || R3 = [I1++];
(R7,R6) = BYTEOP16M (R1:0,R3:2) || R0 = [I0++M0] || R2 = [I1++M0];
a0 += r7.l * r7.l, a1 += r7.h * r7.h (is);
a0 += r6.l * r6.l, a1 += r6.h * r6.h (is);
(R7,R6) = BYTEOP16M (R1:0,R3:2) (R)|| R0 = [I0++] || R2 = [I1++];
a0 += r7.l * r7.l, a1 += r7.h * r7.h (is);
.E80: a0 += r6.l * r6.l, a1 += r6.h * r6.h (is);
a0 += a1;
r0 = a0;
(r7:6) = [sp++];
unlink;
rts;
DEFUN_END(sse8)
DEFUN(sse16,mL1,
(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)):
link 0;
[--sp] = (r7:6);
p0=[fp+24]; // h
i0=r1; // pix1
i1=r2; // pix2
r2=[fp+20]; // line_size
r2+=-16;
m0=r2;
a0=a1=0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
LSETUP(.S160,.E160) LC0=P0;
.S160: DISALGNEXCPT || R1 = [I0++] || R3 = [I1++];
(R7,R6) = BYTEOP16M (R1:0,R3:2) || R0 = [I0++] || R2 = [I1++];
a0 += r7.l * r7.l, a1 += r7.h * r7.h (is);
a0 += r6.l * r6.l, a1 += r6.h * r6.h (is);
(R7,R6) = BYTEOP16M (R1:0,R3:2) (R)|| R1 = [I0++] || R3 = [I1++];
a0 += r7.l * r7.l, a1 += r7.h * r7.h (is);
a0 += r6.l * r6.l, a1 += r6.h * r6.h (is);
(R7,R6) = BYTEOP16M (R1:0,R3:2) || R0 = [I0++M0] || R2 = [I1++M0];
a0 += r7.l * r7.l, a1 += r7.h * r7.h (is);
a0 += r6.l * r6.l, a1 += r6.h * r6.h (is);
(R7,R6) = BYTEOP16M (R1:0,R3:2) (R)|| R0 = [I0++] || R2 = [I1++];
a0 += r7.l * r7.l, a1 += r7.h * r7.h (is);
.E160: a0 += r6.l * r6.l, a1 += r6.h * r6.h (is);
a0 += a1;
r0 = a0;
(r7:6) = [sp++];
unlink;
rts;
DEFUN_END(sse16)