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bfin dsputils, basic pixel operations sads, diffs, motion compensation

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and standard IEEE 8x8 block transforms
patch by Marc Hoffman, mmh pleasantst com

Originally committed as revision 8594 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Marc Hoffman 2007-04-01 22:28:45 +00:00 committed by Diego Biurrun
parent f8fb86e9bb
commit 67fd620c01
6 changed files with 1677 additions and 27 deletions
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5
libavcodec/Makefile
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@ -394,6 +394,11 @@ endif
OBJS-$(TARGET_ARCH_BFIN) += bfin/dsputil_bfin.o \
ASM_OBJS-$(TARGET_ARCH_BFIN) += bfin/pixels_bfin.o \
bfin/idct_bfin.o \
bfin/fdct_bfin.o \
bfin/xidct.o \
EXTRALIBS := -L$(BUILD_ROOT)/libavutil -lavutil$(BUILDSUF) $(EXTRALIBS)
NAME=avcodec

46
libavcodec/bfin/config_bfin.h Normal file
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@ -0,0 +1,46 @@
/*
* config_bfin.h
*
* Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
low level assembler interface wrapper
DEFUN(put_pixels_clamped,mL1,
(DCTELEM *block, uint8_t *dest, int line_size)):
body
rts;
*/
#ifndef DEFUN
#ifndef mL1
#define mL1 .l1.text
#endif
#define mL3 .text
#define DEFUN(fname,where,interface) \
.section where; \
.global _ff_bfin_ ## fname ; \
.align 8; \
_ff_bfin_ ## fname
#endif

309
libavcodec/bfin/dsputil_bfin.c
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@ -1,5 +1,8 @@
/*
* Copyright (c) 2006 Michael Benjamin
* BlackFin DSPUTILS
*
* Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
* Copyright (c) 2006 Michael Benjamin <michael.benjamin@analog.com>
*
* This file is part of FFmpeg.
*
@ -18,38 +21,290 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <unistd.h>
#include <bits/bfin_sram.h>
#include "../avcodec.h"
#include "../dsputil.h"
static int sad8x8_bfin( void *c, uint8_t *blk1, uint8_t *blk2, int line_size, int h )
#define USE_L1CODE
#ifdef USE_L1CODE
#define L1CODE __attribute__ ((l1_text))
#else
#define L1CODE
#endif
int off;
extern void ff_bfin_idct (DCTELEM *block) L1CODE;
extern void ff_bfin_fdct (DCTELEM *block) L1CODE;
extern void ff_bfin_add_pixels_clamped (DCTELEM *block, uint8_t *dest, int line_size) L1CODE;
extern void ff_bfin_put_pixels_clamped (DCTELEM *block, uint8_t *dest, int line_size) L1CODE;
extern void ff_bfin_diff_pixels (DCTELEM *block, uint8_t *s1, uint8_t *s2, int stride) L1CODE;
extern void ff_bfin_get_pixels (DCTELEM *restrict block, const uint8_t *pixels, int line_size) L1CODE;
extern int ff_bfin_pix_norm1 (uint8_t * pix, int line_size) L1CODE;
extern int ff_bfin_z_sad8x8 (uint8_t *blk1, uint8_t *blk2, int dsz, int line_size, int h) L1CODE;
extern int ff_bfin_z_sad16x16 (uint8_t *blk1, uint8_t *blk2, int dsz, int line_size, int h) L1CODE;
extern void ff_bfin_z_put_pixels16_xy2 (uint8_t *block, const uint8_t *s0, int dest_size, int line_size, int h) L1CODE;
extern void ff_bfin_z_put_pixels8_xy2 (uint8_t *block, const uint8_t *s0, int dest_size, int line_size, int h) L1CODE;
extern void ff_bfin_put_pixels16_xy2_nornd (uint8_t *block, const uint8_t *s0, int line_size, int h) L1CODE;
extern void ff_bfin_put_pixels8_xy2_nornd (uint8_t *block, const uint8_t *s0, int line_size, int h) L1CODE;
extern int ff_bfin_pix_sum (uint8_t *p, int stride) L1CODE;
extern void ff_bfin_put_pixels8uc (uint8_t *block, const uint8_t *s0, const uint8_t *s1, int dest_size, int line_size, int h) L1CODE;
extern void ff_bfin_put_pixels16uc (uint8_t *block, const uint8_t *s0, const uint8_t *s1, int dest_size, int line_size, int h) L1CODE;
extern void ff_bfin_put_pixels8uc_nornd (uint8_t *block, const uint8_t *s0, const uint8_t *s1, int line_size, int h) L1CODE;
extern void ff_bfin_put_pixels16uc_nornd (uint8_t *block, const uint8_t *s0, const uint8_t *s1, int line_size, int h) L1CODE;
extern int ff_bfin_sse4 (void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) L1CODE;
extern int ff_bfin_sse8 (void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) L1CODE;
extern int ff_bfin_sse16 (void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h) L1CODE;
#if 0
void pblk (uint8_t *p, int w, int h, int s)
{
int sum;
__asm__ __volatile__ (
"P0 = %1;" // blk1
"P1 = %2;" // blk2
"P2 = %3;\n" // h
"I0 = P0;"
"I1 = P1;\n"
"A0 = 0;"
"A1 = 0;\n"
"M0 = P2;\n"
"P3 = 32;\n"
"LSETUP (sad8x8LoopBegin, sad8x8LoopEnd) LC0=P3;\n"
"sad8x8LoopBegin:\n"
" DISALGNEXCPT || R0 = [I0] || R2 = [I1];\n"
" DISALGNEXCPT || R1 = [I0++] || R3 = [I1++];\n"
"sad8x8LoopEnd:\n"
" SAA ( R1:0 , R3:2 );\n"
"R3 = A1.L + A1.H, R2 = A0.L + A0.H;\n"
"%0 = R2 + R3 (S);\n"
: "=&d" (sum)
: "m"(blk1), "m"(blk2), "m"(h)
: "P0","P1","P2","I0","I1","A0","A1","R0","R1","R2","R3");
return sum;
int i,j;
av_log (0,0,"0x%08x:\n", p);
for (i = 0;i<h;i++) {
for (j=0;j<w;j++)
av_log (0,0,"%3d ", p[j]);
p+=s;
av_log (0,0,"\n");
}
av_log (0,0,"\n");
}
#endif
static void bfin_idct_add (uint8_t *dest, int line_size, DCTELEM *block)
{
ff_bfin_idct (block);
ff_bfin_add_pixels_clamped (block, dest, line_size);
}
static void bfin_idct_put (uint8_t *dest, int line_size, DCTELEM *block)
{
ff_bfin_idct (block);
ff_bfin_put_pixels_clamped (block, dest, line_size);
}
static void bfin_clear_blocks (DCTELEM *blocks)
{
// This is just a simple memset.
//
asm("P0=192; "
"I0=%0; "
"R0=0; "
"LSETUP(clear_blocks_blkfn_lab,clear_blocks_blkfn_lab)LC0=P0;"
"clear_blocks_blkfn_lab:"
"[I0++]=R0;"
::"a" (blocks):"P0","I0","R0");
}
static void bfin_put_pixels8 (uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ff_bfin_put_pixels8uc (block, pixels, pixels, line_size, line_size, h);
}
static void bfin_put_pixels8_x2(uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ff_bfin_put_pixels8uc (block, pixels, pixels+1, line_size, line_size, h);
}
static void bfin_put_pixels8_y2 (uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ff_bfin_put_pixels8uc (block, pixels, pixels+line_size, line_size, line_size, h);
}
static void bfin_put_pixels8_xy2 (uint8_t *block, const uint8_t *s0, int line_size, int h)
{
ff_bfin_z_put_pixels8_xy2 (block,s0,line_size, line_size, h);
}
static void bfin_put_pixels16 (uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ff_bfin_put_pixels16uc (block, pixels, pixels, line_size, line_size, h);
}
static void bfin_put_pixels16_x2 (uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ff_bfin_put_pixels16uc (block, pixels, pixels+1, line_size, line_size, h);
}
static void bfin_put_pixels16_y2 (uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ff_bfin_put_pixels16uc (block, pixels, pixels+line_size, line_size, line_size, h);
}
static void bfin_put_pixels16_xy2 (uint8_t *block, const uint8_t *s0, int line_size, int h)
{
ff_bfin_z_put_pixels16_xy2 (block,s0,line_size, line_size, h);
}
void bfin_put_pixels8_nornd (uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ff_bfin_put_pixels8uc_nornd (block, pixels, pixels, line_size, h);
}
static void bfin_put_pixels8_x2_nornd (uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ff_bfin_put_pixels8uc_nornd (block, pixels, pixels+1, line_size, h);
}
static void bfin_put_pixels8_y2_nornd (uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ff_bfin_put_pixels8uc_nornd (block, pixels, pixels+line_size, line_size, h);
}
void bfin_put_pixels16_nornd (uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ff_bfin_put_pixels16uc_nornd (block, pixels, pixels, line_size, h);
}
static void bfin_put_pixels16_x2_nornd (uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ff_bfin_put_pixels16uc_nornd (block, pixels, pixels+1, line_size, h);
}
static void bfin_put_pixels16_y2_nornd (uint8_t *block, const uint8_t *pixels, int line_size, int h)
{
ff_bfin_put_pixels16uc_nornd (block, pixels, pixels+line_size, line_size, h);
}
static int bfin_pix_abs16 (void *c, uint8_t *blk1, uint8_t *blk2, int line_size, int h)
{
return ff_bfin_z_sad16x16 (blk1,blk2,line_size,line_size,h);
}
static uint8_t vtmp_blk[256] __attribute__((l1_data_B));
static int bfin_pix_abs16_x2 (void *c, uint8_t *blk1, uint8_t *blk2, int line_size, int h)
{
ff_bfin_put_pixels16uc (vtmp_blk, blk2, blk2+1, 16, line_size, h);
return ff_bfin_z_sad16x16 (blk1, vtmp_blk, line_size, 16, h);
}
static int bfin_pix_abs16_y2 (void *c, uint8_t *blk1, uint8_t *blk2, int line_size, int h)
{
ff_bfin_put_pixels16uc (vtmp_blk, blk2, blk2+line_size, 16, line_size, h);
return ff_bfin_z_sad16x16 (blk1, vtmp_blk, line_size, 16, h);
}
static int bfin_pix_abs16_xy2 (void *c, uint8_t *blk1, uint8_t *blk2, int line_size, int h)
{
ff_bfin_z_put_pixels16_xy2 (vtmp_blk, blk2, 16, line_size, h);
return ff_bfin_z_sad16x16 (blk1, vtmp_blk, line_size, 16, h);
}
static int bfin_pix_abs8 (void *c, uint8_t *blk1, uint8_t *blk2, int line_size, int h)
{
return ff_bfin_z_sad8x8 (blk1,blk2,line_size,line_size, h);
}
static int bfin_pix_abs8_x2 (void *c, uint8_t *blk1, uint8_t *blk2, int line_size, int h)
{
ff_bfin_put_pixels8uc (vtmp_blk, blk2, blk2+1, 8, line_size, h);
return ff_bfin_z_sad8x8 (blk1, vtmp_blk, line_size, 8, h);
}
static int bfin_pix_abs8_y2 (void *c, uint8_t *blk1, uint8_t *blk2, int line_size, int h)
{
ff_bfin_put_pixels8uc (vtmp_blk, blk2, blk2+line_size, 8, line_size, h);
return ff_bfin_z_sad8x8 (blk1, vtmp_blk, line_size, 8, h);
}
static int bfin_pix_abs8_xy2 (void *c, uint8_t *blk1, uint8_t *blk2, int line_size, int h)
{
ff_bfin_z_put_pixels8_xy2 (vtmp_blk, blk2, 8, line_size, h);
return ff_bfin_z_sad8x8 (blk1, vtmp_blk, line_size, 8, h);
}
/*
decoder optimization
start on 2/11 100 frames of 352x240@25 compiled with no optimization -g debugging
9.824s ~ 2.44x off
6.360s ~ 1.58x off with -O2
5.740s ~ 1.43x off with idcts
2.64s 2/20 same sman.mp4 decode only
*/
void dsputil_init_bfin( DSPContext* c, AVCodecContext *avctx )
{
c->pix_abs[1][0] = sad8x8_bfin;
c->sad[1] = sad8x8_bfin;
c->get_pixels = ff_bfin_get_pixels;
c->diff_pixels = ff_bfin_diff_pixels;
c->put_pixels_clamped = ff_bfin_put_pixels_clamped;
c->add_pixels_clamped = ff_bfin_add_pixels_clamped;
c->clear_blocks = bfin_clear_blocks;
c->pix_sum = ff_bfin_pix_sum;
c->pix_norm1 = ff_bfin_pix_norm1;
c->sad[0] = bfin_pix_abs16;
c->sad[1] = bfin_pix_abs8;
/* TODO [0] 16 [1] 8 */
c->pix_abs[0][0] = bfin_pix_abs16;
c->pix_abs[0][1] = bfin_pix_abs16_x2;
c->pix_abs[0][2] = bfin_pix_abs16_y2;
c->pix_abs[0][3] = bfin_pix_abs16_xy2;
c->pix_abs[1][0] = bfin_pix_abs8;
c->pix_abs[1][1] = bfin_pix_abs8_x2;
c->pix_abs[1][2] = bfin_pix_abs8_y2;
c->pix_abs[1][3] = bfin_pix_abs8_xy2;
c->sse[0] = ff_bfin_sse16;
c->sse[1] = ff_bfin_sse8;
c->sse[2] = ff_bfin_sse4;
/**
* Halfpel motion compensation with rounding (a+b+1)>>1.
* This is an array[4][4] of motion compensation functions for 4
* horizontal blocksizes (8,16) and the 4 halfpel positions
* *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
*/
c->put_pixels_tab[0][0] = bfin_put_pixels16;
c->put_pixels_tab[0][1] = bfin_put_pixels16_x2;
c->put_pixels_tab[0][2] = bfin_put_pixels16_y2;
c->put_pixels_tab[0][3] = bfin_put_pixels16_xy2;
c->put_pixels_tab[1][0] = bfin_put_pixels8;
c->put_pixels_tab[1][1] = bfin_put_pixels8_x2;
c->put_pixels_tab[1][2] = bfin_put_pixels8_y2;
c->put_pixels_tab[1][3] = bfin_put_pixels8_xy2;
c->put_no_rnd_pixels_tab[1][0] = bfin_put_pixels8_nornd;
c->put_no_rnd_pixels_tab[1][1] = bfin_put_pixels8_x2_nornd;
c->put_no_rnd_pixels_tab[1][2] = bfin_put_pixels8_y2_nornd;
c->put_no_rnd_pixels_tab[1][3] = ff_bfin_put_pixels8_xy2_nornd;
c->put_no_rnd_pixels_tab[0][0] = bfin_put_pixels16_nornd;
c->put_no_rnd_pixels_tab[0][1] = bfin_put_pixels16_x2_nornd;
c->put_no_rnd_pixels_tab[0][2] = bfin_put_pixels16_y2_nornd;
c->put_no_rnd_pixels_tab[0][3] = ff_bfin_put_pixels16_xy2_nornd;
c->fdct = ff_bfin_fdct;
c->idct = ff_bfin_idct;
c->idct_add = bfin_idct_add;
c->idct_put = bfin_idct_put;
}

324
libavcodec/bfin/fdct_bfin.S Normal file
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@ -0,0 +1,324 @@
/*
* fdct BlackFin
*
* Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
void ff_bfin_fdct (DCTELEM *buf);
This implementation works only for 8x8 input. The range of input
must be -256 to 255 i.e. 8bit input represented in a 16bit data
word. The original data must be sign extended into the 16bit data
words.
Chen factorization of
8
X(m) = sum (x(n) * cos ((2n+1)*m*pi/16))
n=0
C4
0 --*-------------*0+7---*-----*0+3-------*-*-------------------> 0
\ / \ / X S4,S4
1 --*-\---------/-*1+6---*-\-/-*1+2-------*-*-------------------> 4
\ / \ -C4 C3
2 --*---\-----/---*2+5---*-/-\-*1-2---------------*-*-----------> 2
\ / / \ X S3,-S3
3 --*-----\-/-----*3+4---*-----*0-3---------------*-*-----------> 6
/ C7 C3
4 --*-----/-\-----*3-4------------*-*4+5--*-----*---------------> 1
/ \ -C4 X \ /S7 C3
5 --*---/-----\---*2-5---*-*------*=*4-5----\-/------*-*--------> 5
/ \ X S4,S4 / X S3,-S3
6 --*-/---------\-*1-6---*-*------*=*7-6----/-\------*-*--------> 3
/ \ C4 X / \-S7 C3
--*-------------*0-7------------*-*7+6--*-----*---------------> 7
C7
Notation
Cn = cos(n*pi/8) used throughout the code.
Registers used:
R0, R1, R2, R3, R4, R5, R6,R7, P0, P1, P2, P3, P4, P5, A0, A1.
Other registers used:
I0, I1, I2, I3, B0, B2, B3, M0, M1, L3 registers and LC0.
Input - r0 - pointer to start of DCTELEM *block
Output - The DCT output coefficients in the DCTELEM *block
Register constraint:
This code is called from jpeg_encode.
R6, R5, R4 if modified should be stored and restored.
Performance: (Timer version 0.6.33)
Code Size : 240 Bytes.
Memory Required :
Input Matrix : 8 * 8 * 2 Bytes.
Coefficients : 16 Bytes
Temporary matrix: 8 * 8 * 2 Bytes.
Cycle Count :26+{18+8*(14+2S)}*2 where S -> Stalls
(7.45 c/pel)
-----------------------------------------
| Size | Forward DCT | Inverse DCT |
-----------------------------------------
| 8x8 | 284 Cycles | 311 Cycles |
-----------------------------------------
Ck = int16(cos(k/16*pi)*32767+.5)/2
#define C4 23170
#define C3 13623
#define C6 6270
#define C7 3196
Sk = int16(sin(k/16*pi)*32767+.5)/2
#define S4 11585
#define S3 9102
#define S6 15137
#define S7 16069
the coefficients are ordered as follows:
short dct_coef[]
C4,S4,
C6,S6,
C7,S7,
S3,C3,
-----------------------------------------------------------
FFMPEG conformance testing results
-----------------------------------------------------------
dct-test: modified with the following
dct_error("BFINfdct", 0, ff_bfin_fdct, fdct, test);
produces the following output:
root:/u/ffmpeg/bhead/libavcodec> ./dct-test
ffmpeg DCT/IDCT test
2 -131 -6 -48 -36 33 -83 24
34 52 -24 -15 5 92 57 143
-67 -43 -1 74 -16 5 -71 32
-78 106 92 -34 -38 81 20 -18
7 -62 40 2 -15 90 -62 -83
-83 1 -104 -13 43 -19 7 11
-63 31 12 -29 83 72 21 10
-17 -63 -15 73 50 -91 159 -14
DCT BFINfdct: err_inf=2 err2=0.16425938 syserr=0.00795000 maxout=2098 blockSumErr=27
DCT BFINfdct: 92.1 kdct/s
root:/u/ffmpeg/bhead/libavcodec>
*/
#include "config_bfin.h"
.section .l1.data.B,"aw",@progbits
.align 4;
dct_coeff:
.short 0x5a82, 0x2d41, 0x187e, 0x3b21, 0x0c7c, 0x3ec5, 0x238e, 0x3537;
.section .l1.data.A,"aw",@progbits
.align 4
vtmp: .space 128
DEFUN(fdct,mL1,
(DCTELEM *block)):
[--SP] = (R7:4, P5:3); // Push the registers onto the stack.
b0 = r0;
r0 = [P3+dct_coeff@GOT17M4];
b3 = r0;
r0 = [P3+vtmp@GOT17M4];
b2 = r0;
L3 = 16; // L3 is set to 16 to make the coefficient
// array Circular.
//----------------------------------------------------------------------------
/*
* I0, I1, and I2 registers are used to read the input data. I3 register is used
* to read the coefficients. P0 and P1 registers are used for writing the output
* data.
*/
M0 = 12 (X); // All these initializations are used in the
M1 = 16 (X); // modification of address offsets.
M2 = 128 (X);
P2 = 16;
P3 = 32 (X);
P4 = -110 (X);
P5 = -62 (X);
P0 = 2(X);
// Prescale the input to get the correct precision.
i0=b0;
i1=b0;
lsetup (.0, .1) LC0 = P3;
r0=[i0++];
.0: r1=r0<<3 (v) || r0=[i0++] ;
.1: [i1++]=r1;
/*
* B0 points to the "in" buffer.
* B2 points to "temp" buffer in the first iteration.
*/
lsetup (.2, .3) LC0 = P0;
.2:
I0 = B0; // I0 points to Input Element (0, 0).
I1 = B0; // Element 1 and 0 is read in R0.
I1 += M0 || R0 = [I0++]; // I1 points to Input Element (0, 6).
I2 = I1; // Element 6 is read into R3.H.
I2 -= 4 || R3.H = W[I1++]; // I2 points to Input Element (0, 4).
I3 = B3; // I3 points to Coefficients.
P0 = B2; // P0 points to temporary array Element
// (0, 0).
P1 = B2; // P1 points to temporary array.
R7 = [P1++P2] || R2 = [I2++]; // P1 points to temporary array
// Element (1, 0).
// R7 is a dummy read. X4,X5
// are read into R2.
R3.L = W[I1--]; // X7 is read into R3.L.
R1.H = W[I0++]; // X2 is read into R1.H.
/*
* X0 = (X0 + X7) / 2.
* X1 = (X1 + X6) / 2.
* X6 = (X1 - X6) / 2.
* X7 = (X0 - X7) / 2.
* It reads the data 3 in R1.L.
*/
R0 = R0 +|+ R3, R3 = R0 -|- R3 || R1.L = W[I0++] || NOP;
/*
* X2 = (X2 + X5) / 2.
* X3 = (X3 + X4) / 2.
* X4 = (X3 - X4) / 2.
* X5 = (X2 - X5) / 2.
* R7 = C4 = cos(4*pi/16)
*/
R1 = R1 +|+ R2, R2 = R1 -|- R2 (CO) || NOP || R7 = [I3++];
/*
* At the end of stage 1 R0 has (1,0), R1 has (2,3), R2 has (4, 5) and
* R3 has (6,7).
* Where the notation (x, y) represents uper/lower half pairs.
*/
/*
* X0 = X0 + X3.
* X1 = X1 + X2.
* X2 = X1 - X2.
* X3 = X0 - X3.
*/
R0 = R0 +|+ R1, R1 = R0 -|- R1;
lsetup (.row0, .row1) LC1 = P2 >> 1; // 1d dct, loops 8x
.row0:
/*
* This is part 2 computation continued.....
* A1 = X6 * cos(pi/4)
* A0 = X6 * cos(pi/4)
* A1 = A1 - X5 * cos(pi/4)
* A0 = A0 + X5 * cos(pi/4).
* The instruction W[I0] = R3.L is used for packing it to R2.L.
*/
A1=R3.H*R7.l, A0=R3.H*R7.l || I1+=M1 || W[I0] = R3.L;
R4.H=(A1-=R2.L*R7.l), R4.L=(A0+=R2.L*R7.l) || I2+=M0 || NOP;
/* R0 = (X1,X0) R1 = (X2,X3) R4 = (X5, X6). */
/*
* A1 = X0 * cos(pi/4)
* A0 = X0 * cos(pi/4)
* A1 = A1 - X1 * cos(pi/4)
* A0 = A0 + X1 * cos(pi/4)
* R7 = (C2,C6)
*/
A1=R0.L*R7.h, A0=R0.L*R7.h || NOP || R3.H=W[I1++];
R5.H=(A1-=R0.H*R7.h),R5.L=(A0+=R0.H*R7.h) || R7=[I3++] || NOP;
/*
* A1 = X2 * cos(3pi/8)
* A0 = X3 * cos(3pi/8)
* A1 = A1 + X3 * cos(pi/8)
* A0 = A0 - X2 * cos(pi/8)
* R3 = cos(pi/4)
* R7 = (cos(7pi/8),cos(pi/8))
* X4 = X4 + X5.
* X5 = X4 - X5.
* X6 = X7 - X6.
* X7 = X7 + X6.
*/
A1=R1.H*R7.L, A0=R1.L*R7.L || W[P0++P3]=R5.L || R2.L=W[I0];
R2=R2+|+R4, R4=R2-|-R4 || I0+=4 || R3.L=W[I1--];
R6.H=(A1+=R1.L*R7.H),R6.L=(A0 -= R1.H * R7.H) || I0+=4 || R7=[I3++];
/* R2 = (X4, X7) R4 = (X5,X6) R5 = (X1, X0) R6 = (X2,X3). */
/*
* A1 = X4 * cos(7pi/16)
* A0 = X7 * cos(7pi/16)
* A1 = A1 + X7 * cos(pi/16)
* A0 = A0 - X4 * cos(pi/16)
*/
A1=R2.H*R7.L, A0=R2.L*R7.L || W[P0++P3]=R6.H || R0=[I0++];
R2.H=(A1+=R2.L*R7.H),R2.L=(A0-=R2.H*R7.H) || W[P0++P3]=R5.H || R7=[I3++];
/*
* A1 = X5 * cos(3pi/16)
* A0 = X6 * cos(3pi/16)
* A1 = A1 + X6 * cos(5pi/16)
* A0 = A0 - X5 * cos(5pi/16)
* The output values are written.
*/
A1=R4.H*R7.H, A0=R4.L*R7.H || W[P0++P2]=R6.L || R1.H=W[I0++];
R4.H=(A1+=R4.L*R7.L),R4.L=(A0-=R4.H*R7.L) || W[P0++P4]=R2.L || R1.L=W[I0++];
/* Beginning of next stage, **pipelined** + drain and store the
rest of the column store. */
R0=R0+|+R3,R3=R0-|-R3 || W[P1++P3]=R2.H || R2=[I2++];
R1=R1+|+R2,R2=R1-|-R2 (CO) || W[P1++P3]=R4.L || R7=[I3++];
.row1: R0=R0+|+R1,R1=R0-|-R1 || W[P1++P5]=R4.H || NOP;
// Exchange input with output.
B1 = B0;
B0 = B2;
.3: B2 = B1;
L3=0;
(r7:4,p5:3) = [sp++];
RTS;

297
libavcodec/bfin/idct_bfin.S Normal file
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/*
* idct BlackFin
*
* Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/*
This blackfin DSP code implements an 8x8 inverse type II DCT.
Prototype : void ff_bfin_idct(DCTELEM *in)
Registers Used : A0, A1, R0-R7, I0-I3, B0, B2, B3, M0-M2, L0-L3, P0-P5, LC0.
Performance :
Code Size : 498 Bytes.
Cycle Count : 417 Cycles
-----------------------------------------------------------
FFMPEG conformance testing results
-----------------------------------------------------------
dct-test: modified with the following
dct_error("BFINidct", 1, ff_bfin_idct, idct, test);
produces the following output
root:/u/ffmpeg/bhead/libavcodec> ./dct-test -i
ffmpeg DCT/IDCT test
8 15 -2 21 24 17 0 10
2 -10 -5 -5 -3 7 -14 -3
2 -13 -10 -19 18 -6 6 -2
9 4 16 -3 9 12 10 15
15 -9 -2 10 1 16 0 -15
-15 5 7 3 13 0 13 20
-6 -15 24 9 -18 1 9 -22
-8 25 23 2 -7 0 30 13
IDCT BFINidct: err_inf=1 err2=0.01002344 syserr=0.00150000 maxout=266 blockSumErr=64
IDCT BFINidct: 88.3 kdct/s
*/
#include "config_bfin.h"
.section .l1.data.B,"aw",@progbits
.align 4;
coefs:
.short 0x5a82; // C4
.short 0x5a82; // C4
.short 0x30FC; //cos(3pi/8) C6
.short 0x7642; //cos(pi/8) C2
.short 0x18F9; //cos(7pi/16)
.short 0x7D8A; //cos(pi/16)
.short 0x471D; //cos(5pi/16)
.short 0x6A6E; //cos(3pi/16)
.short 0x18F9; //cos(7pi/16)
.short 0x7D8A; //cos(pi/16)
.section .l1.data.A
vtmp: .space 256
#define TMP0 FP-8
#define TMP1 FP-12
#define TMP2 FP-16
DEFUN(idct,mL1,
(DCTELEM *block)):
/********************** Function Prologue *********************************/
link 16;
[--SP] = (R7:4, P5:3); // Push the registers onto the stack.
B0 = R0; // Pointer to Input matrix
R1 = [P3+coefs@GOT17M4]; // Pointer to Coefficients
R2 = [P3+vtmp@GOT17M4]; // Pointer to Temporary matrix
B3 = R1;
B2 = R2;
L3 = 20; // L3 is used for making the coefficient array
// circular.
// MUST BE RESTORED TO ZERO at function exit.
M1 = 16 (X); // All these registers are initialized for
M3 = 8(X); // modifying address offsets.
I0 = B0; // I0 points to Input Element (0, 0).
I2 = B0; // I2 points to Input Element (0, 0).
I2 += M3 || R0.H = W[I0];
// Element 0 is read into R0.H
I1 = I2; // I1 points to input Element (0, 6).
I1 += 4 || R0.L = W[I2++];
// I2 points to input Element (0, 4).
// Element 4 is read into R0.L.
P2 = 8 (X);
P3 = 32 (X);
P4 = -32 (X);
P5 = 98 (X);
R7 = 0x8000(Z);
I3 = B3; // I3 points to Coefficients
P0 = B2; // P0 points to array Element (0, 0) of temp
P1 = B2;
R7 = [I3++] || [TMP2]=R7; // Coefficient C4 is read into R7.H and R7.L.
MNOP;
NOP;
/*
* A1 = Y0 * cos(pi/4)
* A0 = Y0 * cos(pi/4)
* A1 = A1 + Y4 * cos(pi/4)
* A0 = A0 - Y4 * cos(pi/4)
* load:
* R1=(Y2,Y6)
* R7=(C2,C6)
* res:
* R3=Y0, R2=Y4
*/
A1=R7.H*R0.H, A0=R7.H*R0.H (IS) || I0+= 4 || R1.L=W[I1++];
R3=(A1+=R7.H*R0.L), R2=(A0-=R7.H*R0.L) (IS) || R1.H=W[I0--] || R7=[I3++];
LSETUP (.0, .1) LC0 = P2; // perform 8 1d idcts
P2 = 112 (X);
P1 = P1 + P2; // P1 points to element (7, 0) of temp buffer.
P2 = -94(X);
.0:
/*
* A1 = Y2 * cos(3pi/8)
* A0 = Y2 * cos(pi/8)
* A1 = A1 - Y6 * cos(pi/8)
* A0 = A0 + Y6 * cos(3pi/8)
* R5 = (Y1,Y7)
* R7 = (C1,C7)
* res:
* R1=Y2, R0=Y6
*/
A1=R7.L*R1.H, A0=R7.H*R1.H (IS) || I0+=4 || R5.H=W[I0];
R1=(A1-=R7.H*R1.L), R0=(A0+=R7.L*R1.L) (IS) || R5.L=W[I1--] || R7=[I3++];
/*
* Y0 = Y0 + Y6.
* Y4 = Y4 + Y2.
* Y2 = Y4 - Y2.
* Y6 = Y0 - Y6.
* R3 is saved
* R6.l=Y3
* note: R3: Y0, R2: Y4, R1: Y2, R0: Y6
*/
R3=R3+R0, R0=R3-R0;
R2=R2+R1, R1=R2-R1 || [TMP0]=R3 || R6.L=W[I0--];
/*
* Compute the odd portion (1,3,5,7) even is done.
*
* Y1 = C7 * Y1 - C1 * Y7 + C3 * Y5 - C5 * Y3.
* Y7 = C1 * Y1 + C7 * Y7 + C5 * Y5 + C3 * Y3.
* Y5 = C5 * Y1 + C3 * Y7 + C7 * Y5 - C1 * Y3.
* Y3 = C3 * Y1 - C5 * Y7 - C1 * Y5 - C7 * Y3.
*/
// R5=(Y1,Y7) R6=(Y5,Y3) // R7=(C1,C7)
A1 =R7.L*R5.H, A0 =R7.H*R5.H (IS) || [TMP1]=R2 || R6.H=W[I2--];
A1-=R7.H*R5.L, A0+=R7.L*R5.L (IS) || I0-=4 || R7=[I3++];
A1+=R7.H*R6.H, A0+=R7.L*R6.H (IS) || I0+=M1; // R7=(C3,C5)
R3 =(A1-=R7.L*R6.L), R2 =(A0+=R7.H*R6.L) (IS);
A1 =R7.L*R5.H, A0 =R7.H*R5.H (IS) || R4=[TMP0];
A1+=R7.H*R5.L, A0-=R7.L*R5.L (IS) || I1+=M1 || R7=[I3++]; // R7=(C1,C7)
A1+=R7.L*R6.H, A0-=R7.H*R6.H (IS);
R7 =(A1-=R7.H*R6.L), R6 =(A0-=R7.L*R6.L) (IS) || I2+=M1;
// R3=Y1, R2=Y7, R7=Y5, R6=Y3
/* Transpose write column. */
R5.H=R4+R2 (RND12); // Y0=Y0+Y7
R5.L=R4-R2 (RND12) || R4 = [TMP1]; // Y7=Y7-Y0
R2.H=R1+R7 (RND12) || W[P0++P3]=R5.H; // Y2=Y2+Y5 st Y0
R2.L=R1-R7 (RND12) || W[P1++P4]=R5.L || R7=[I3++]; // Y5=Y2-Y5 st Y7
R5.H=R0-R3 (RND12) || W[P0++P3]=R2.H || R1.L=W[I1++]; // Y1=Y6-Y1 st Y2
R5.L=R0+R3 (RND12) || W[P1++P4]=R2.L || R0.H=W[I0++]; // Y6=Y6+Y1 st Y5
R3.H=R4-R6 (RND12) || W[P0++P3]=R5.H || R0.L=W[I2++]; // Y3=Y3-Y4 st Y1
R3.L=R4+R6 (RND12) || W[P1++P4]=R5.L || R1.H=W[I0++]; // Y4=Y3+Y4 st Y6
/* pipeline loop start, + drain Y3, Y4 */
A1=R7.H*R0.H, A0=R7.H*R0.H (IS) || W[P0++P2]= R3.H || R1.H = W[I0--];
.1: R3=(A1+=R7.H*R0.L), R2=(A0-=R7.H*R0.L) (IS) || W[P1++P5]= R3.L || R7 = [I3++];
I0 = B2; // I0 points to Input Element (0, 0)
I2 = B2; // I2 points to Input Element (0, 0)
I2 += M3 || R0.H = W[I0];
// Y0 is read in R0.H
I1 = I2; // I1 points to input Element (0, 6)
I1 += 4 || R0.L = W[I2++];
// I2 points to input Element (0, 4)
// Y4 is read in R0.L
P2 = 8 (X);
I3 = B3; // I3 points to Coefficients
P0 = B0; // P0 points to array Element (0, 0) for writing
// output
P1 = B0;
R7 = [I3++]; // R7.H = C4 and R7.L = C4
NOP;
/*
* A1 = Y0 * cos(pi/4)
* A0 = Y0 * cos(pi/4)
* A1 = A1 + Y4 * cos(pi/4)
* A0 = A0 - Y4 * cos(pi/4)
* load:
* R1=(Y2,Y6)
* R7=(C2,C6)
* res:
* R3=Y0, R2=Y4
*/
A1=R7.H*R0.H, A0=R7.H*R0.H (IS) || I0+=4 || R1.L=W[I1++];
R3=(A1+=R7.H*R0.L), R2=(A0-=R7.H*R0.L) (IS) || R1.H=W[I0--] || R7=[I3++];
LSETUP (.2, .3) LC0 = P2; // peform 8 1d idcts
P2 = 112 (X);
P1 = P1 + P2;
P2 = -94(X);
.2:
/*
* A1 = Y2 * cos(3pi/8)
* A0 = Y2 * cos(pi/8)
* A1 = A1 - Y6 * cos(pi/8)
* A0 = A0 + Y6 * cos(3pi/8)
* R5 = (Y1,Y7)
* R7 = (C1,C7)
* res:
* R1=Y2, R0=Y6
*/
A1=R7.L*R1.H, A0=R7.H*R1.H (IS) || I0+=4 || R5.H=W[I0];
R1=(A1-=R7.H*R1.L), R0=(A0+=R7.L*R1.L) (IS) || R5.L=W[I1--] || R7=[I3++];
/*
* Y0 = Y0 + Y6.
* Y4 = Y4 + Y2.
* Y2 = Y4 - Y2.
* Y6 = Y0 - Y6.
* R3 is saved
* R6.l=Y3
* note: R3: Y0, R2: Y4, R1: Y2, R0: Y6
*/
R3=R3+R0, R0=R3-R0;
R2=R2+R1, R1=R2-R1 || [TMP0]=R3 || R6.L=W[I0--];
/*
* Compute the odd portion (1,3,5,7) even is done.
*
* Y1 = C7 * Y1 - C1 * Y7 + C3 * Y5 - C5 * Y3.
* Y7 = C1 * Y1 + C7 * Y7 + C5 * Y5 + C3 * Y3.
* Y5 = C5 * Y1 + C3 * Y7 + C7 * Y5 - C1 * Y3.
* Y3 = C3 * Y1 - C5 * Y7 - C1 * Y5 - C7 * Y3.
*/
// R5=(Y1,Y7) R6=(Y5,Y3) // R7=(C1,C7)
A1 =R7.L*R5.H, A0 =R7.H*R5.H (IS) || [TMP1]=R2 || R6.H=W[I2--];
A1-=R7.H*R5.L, A0+=R7.L*R5.L (IS) || I0-=4 || R7=[I3++];
A1+=R7.H*R6.H, A0+=R7.L*R6.H (IS) || I0+=M1; // R7=(C3,C5)
R3 =(A1-=R7.L*R6.L), R2 =(A0+=R7.H*R6.L) (IS);
A1 =R7.L*R5.H, A0 =R7.H*R5.H (IS) || R4=[TMP0];
A1+=R7.H*R5.L, A0-=R7.L*R5.L (IS) || I1+=M1 || R7=[I3++]; // R7=(C1,C7)
A1+=R7.L*R6.H, A0-=R7.H*R6.H (IS);
R7 =(A1-=R7.H*R6.L), R6 =(A0-=R7.L*R6.L) (IS) || I2+=M1;
// R3=Y1, R2=Y7, R7=Y5, R6=Y3
/* Transpose write column. */
R5.H=R4+R2 (RND20); // Y0=Y0+Y7
R5.L=R4-R2 (RND20) || R4 = [TMP1]; // Y7=Y7-Y0
R2.H=R1+R7 (RND20) || W[P0++P3]=R5.H; // Y2=Y2+Y5 st Y0
R2.L=R1-R7 (RND20) || W[P1++P4]=R5.L || R7=[I3++]; // Y5=Y2-Y5 st Y7
R5.H=R0-R3 (RND20) || W[P0++P3]=R2.H || R1.L=W[I1++]; // Y1=Y6-Y1 st Y2
R5.L=R0+R3 (RND20) || W[P1++P4]=R2.L || R0.H=W[I0++]; // Y6=Y6+Y1 st Y5
R3.H=R4-R6 (RND20) || W[P0++P3]=R5.H || R0.L=W[I2++]; // Y3=Y3-Y4 st Y1
R3.L=R4+R6 (RND20) || W[P1++P4]=R5.L || R1.H=W[I0++]; // Y4=Y3+Y4 st Y6
/* pipeline loop start, + drain Y3, Y4 */
A1=R7.H*R0.H, A0=R7.H*R0.H (IS) || W[P0++P2]= R3.H || R1.H = W[I0--];
.3: R3=(A1+=R7.H*R0.L), R2=(A0-=R7.H*R0.L) (IS) || W[P1++P5]= R3.L || R7 = [I3++];
L3 = 0;
(R7:4,P5:3)=[SP++];
unlink;
RTS;

723
libavcodec/bfin/pixels_bfin.S Normal file
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/*
* Blackfin Pixel Operations
* Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config_bfin.h"
DEFUN(put_pixels_clamped,mL1,
(DCTELEM *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(add_pixels_clamped,mL1,
(DCTELEM *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;
/*
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(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(put_pixels8uc_nornd,mL1,
(uint8_t *block, const uint8_t *s0, const uint8_t *s1,
int line_size, int h)):
i3=r0; // dest
i0=r1; // src0
i1=r2; // src1
r2=[sp+12]; // line_size
p0=[sp+16]; // h
[--sp] = (r7:6);
r2+=-4;
m3=r2;
r2+=-4;
m0=r2;
LSETUP(pp8$2,pp8$3) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
pp8$2: DISALGNEXCPT || R1 = [I0++] || R3 =[I1++];
R6 = BYTEOP1P(R1:0,R3:2)(T) || R0 = [I0++M0]|| R2 =[I1++M0];
R7 = BYTEOP1P(R1:0,R3:2)(T,R) || R0 = [I0++] || [I3++] = R6 ;
pp8$3: DISALGNEXCPT || R2 = [I1++] || [I3++M3] = R7;
(r7:6) = [sp++];
RTS;
DEFUN(put_pixels16uc_nornd,mL1,
(uint8_t *block, const uint8_t *s0, const uint8_t *s1,
int line_size, int h)):
i3=r0; // dest
i0=r1; // src0
i1=r2; // src1
r2=[sp+12]; // line_size
p0=[sp+16]; // h
[--sp] = (r7:6);
r2+=-12;
m3=r2; // line_size
r2+=-4;
m0=r2;
LSETUP(pp16$2,pp16$3) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
pp16$2:
DISALGNEXCPT || R1 = [I0++] || R3 =[I1++];
R6 = BYTEOP1P(R1:0,R3:2)(T) || R0 = [I0++] || R2 =[I1++];
R7 = BYTEOP1P(R1:0,R3:2)(T,R) || R1 = [I0++] || R3 =[I1++];
[I3++] = R6;
R6 = BYTEOP1P(R1:0,R3:2)(T) || R0 = [I0++M0] || R2 =[I1++M0];
R7 = BYTEOP1P(R1:0,R3:2)(T,R) || R0 = [I0++] || [I3++] = R7 ;
[I3++] = R6;
pp16$3: DISALGNEXCPT || R2 = [I1++] || [I3++M3] = R7;
(r7:6) = [sp++];
RTS;
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(put_pixels16_xy2_nornd,mL1,
(uint8_t *block, const uint8_t *s0,
int line_size, int h)):
link 0;
[--sp] = (r7:4);
i3=r0; // dest
i0=r1; // src0--> pixels
i1=r1; // src1--> pixels + line_size
m3=r2;
r2+=-12;
m2=r2;
r2+=-4;
i1+=m3; /* src1 + line_size */
m0=r2; /* line-size - 20 */
p0=[fp+20]; // h
B0=I0;
B1=I1;
B3=I3;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
LSETUP(LS$16ET,LE$16ET) LC0=P0;
LS$16ET:DISALGNEXCPT || R1 = [I0++] || R3 =[I1++];
R4 = BYTEOP2P (R3:2,R1:0) (TL) || R0 = [I0++] || R2 =[I1++];
R5 = BYTEOP2P (R3:2,R1:0) (TL,R) || R1 = [I0++] || [I3++] = R4 ;
DISALGNEXCPT || R3 = [I1++] || [I3++] = R5;
R4 = BYTEOP2P (R3:2,R1:0) (TL) || R0 = [I0++M0]|| R2 = [I1++M0];
R5 = BYTEOP2P (R3:2,R1:0) (TL,R) || R0 = [I0++] || [I3++] = R4 ;
LE$16ET: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$16OT,LE$16OT) LC0=P0;
LS$16OT:DISALGNEXCPT || R1 = [I0++] || R3 =[I1++];
R4 = BYTEOP2P (R3:2,R1:0) (TH) || R0 = [I0++] || R2 =[I1++];
R5 = BYTEOP2P (R3:2,R1:0) (TH,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) (TH) || R0 = [I0++M0]|| R2 = [I1++M0];
R5 = BYTEOP2P (R3:2,R1:0) (TH,R) || R0 = [I0++] || R6 = [I3++];
R4 = R4 +|+ R6 || R7 = [I3--];
R5 = R5 +|+ R7 || [I3++] = R4;
LE$16OT:DISALGNEXCPT || R2 = [I1++] || [I3++M2] = R5;
(r7:4) = [sp++];
unlink;
rts;
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(put_pixels8_xy2_nornd,mL1,
(uint8_t *block, const uint8_t *s0, int line_size, int h)):
link 0;
[--sp] = (r7:4);
i3=r0; // dest
i0=r1; // src0--> pixels
i1=r1; // src1--> pixels + line_size
m3=r2;
r2+=-4;
m2=r2;
r2+=-4;
i1+=m3; /* src1 + line_size */
m0=r2; /* line-size - 20 */
p0=[fp+20]; // h
b0 = I0;
b1 = I1;
b3 = I3;
LSETUP(LS$8ET,LE$8ET) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
LS$8ET: DISALGNEXCPT || R1 = [I0++] || R3 = [I1++];
R4 = BYTEOP2P (R3:2,R1:0) (TL) || R0 = [I0++M0] || R2 = [I1++M0];
R5 = BYTEOP2P (R3:2,R1:0) (TL,R) || R0 = [I0++] || [I3++] = R4 ;
LE$8ET: DISALGNEXCPT || R2 = [I1++] || [I3++M2] = R5;
M1 = 1;
I3 = b3;
I1 = b1;
I0 = b0;
I0 += M1;
I1 += M1;
LSETUP(LS$8OT,LE$8OT) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 = [I1++];
LS$8OT: DISALGNEXCPT || R1 = [I0++] || R3 = [I1++];
R4 = BYTEOP2P (R3:2,R1:0) (TH) || R0 = [I0++M0] || R2 = [I1++M0];
R5 = BYTEOP2P (R3:2,R1:0) (TH,R) || R0 = [I0++] || R6 = [I3++];
R4 = R4 +|+ R6 || R7 = [I3--];
R5 = R5 +|+ R7 || [I3++] = R4;
LE$8OT: DISALGNEXCPT || R2 =[I1++] || [I3++M2] = R5;
(r7:4) = [sp++];
unlink;
rts;
DEFUN(diff_pixels,mL1,
(DCTELEM *block, uint8_t *s1, uint8_t *s2, int stride)):
link 0;
[--sp] = (r7:4);
p0=8;
i3=r0; // block
i0=r1; // s1
i1=r2; // s2
r2=[fp+20]; // stride
r2+=-8;
m0=r2;
LSETUP(.LS0,.LE0) LC0=P0;
DISALGNEXCPT || R0 = [I0++] || R2 =[I1++];
.LS0: DISALGNEXCPT || R1 = [I0++] || R3 = [I1++];
(R5,R4) = BYTEOP16M (R1:0,R3:2) || R0 = [I0++M0] || R2 = [I1++M0];
(R7,R6) = BYTEOP16M (R1:0,R3:2) (R)|| R0 = [I0++] || [I3++] = R4;
DISALGNEXCPT || R2 = [I1++] || [I3++] = R5;
[i3++]=r6;
.LE0: [i3++]=r7;
(r7:4) = [sp++];
unlink;
rts;
/*
for (i = 0; i < 16; i++) {
for (j = 0; j < 16; j++) {
sum += pix[j];
}
pix += line_size;
}
*/
DEFUN(pix_sum,mL1,
(uint8_t *p, int stride)):
link 0;
[--sp] = (r7:4);
p0=8;
i0=r0; // s1
i1=r0;
m1=r1;
r1=r1+r1;
r1+=-16; // stride
m0=r1;
i1+=m1;
r6=0;
LSETUP(LS$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(get_pixels,mL1,
(DCTELEM *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;
/* 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;
/* 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(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(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(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(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;