Commit cf0b7cf9 authored by Christophe Massiot's avatar Christophe Massiot

* Borrowed LiViD's MMX and MMX EXT IDCT.

This might break things. Expect a performance increase.
parent fd1220a2
......@@ -278,7 +278,7 @@ endif
ifneq (,$(findstring 86,$(ARCH)))
ifneq (,$(findstring mmx,$(ARCH)))
ASM_OBJ =
STD_PLUGIN_ASM = plugins/idct/idctmmx_asm.o
STD_PLUGIN_ASM =
endif
endif
......@@ -351,11 +351,10 @@ PLUGIN_IDCTCLASSIC = plugins/idct/idctclassic.o \
plugins/idct/idct_common.o
PLUGIN_IDCTMMX = plugins/idct/idctmmx.o \
plugins/idct/idct_common.o \
plugins/idct/idctmmx_asm.o
plugins/idct/idct_common.o
PLUGIN_IDCTMMXEXT = plugins/idct/idctmmxext.o \
plugins/idct/idct_mmxext.o
plugins/idct/idct_common.o
PLUGIN_ALSA = plugins/alsa/alsa.o \
plugins/alsa/aout_alsa.o
......
......@@ -83,6 +83,7 @@ typedef struct function_list_s
void ( * pf_idct ) ( struct vdec_thread_s * p_vdec,
dctelem_t * p_block,
int i_idontcare );
void ( * pf_norm_scan ) ( u8 ppi_scan[2][64] );
} idct;
struct
......
......@@ -2,7 +2,7 @@
* idct.c : IDCT module
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: idct.c,v 1.4 2001/01/16 05:04:25 sam Exp $
* $Id: idct.c,v 1.5 2001/01/17 18:17:30 massiot Exp $
*
* Authors: Gaël Hendryckx <jimmy@via.ecp.fr>
*
......@@ -50,13 +50,8 @@
* Local and extern prototypes.
*****************************************************************************/
static void idct_getfunctions( function_list_t * p_function_list );
static int idct_Probe ( probedata_t *p_data );
static void vdec_InitIDCT ( vdec_thread_t * p_vdec);
void vdec_SparseIDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_sparse_pos);
static void vdec_IDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_idontcare );
static void vdec_NormScan ( u8 ppi_scan[2][64] );
/*****************************************************************************
......@@ -136,6 +131,7 @@ static void idct_getfunctions( function_list_t * p_function_list )
p_function_list->functions.idct.pf_init = vdec_InitIDCT;
p_function_list->functions.idct.pf_sparse_idct = vdec_SparseIDCT;
p_function_list->functions.idct.pf_idct = vdec_IDCT;
p_function_list->functions.idct.pf_norm_scan = vdec_NormScan;
}
/*****************************************************************************
......@@ -153,28 +149,17 @@ static int idct_Probe( probedata_t *p_data )
}
/*****************************************************************************
* vdec_InitIDCT : initialize datas for vdec_SparseIDCT
* vdec_NormScan : Unused in this IDCT
*****************************************************************************/
static void vdec_InitIDCT (vdec_thread_t * p_vdec)
static void vdec_NormScan( u8 ppi_scan[2][64] )
{
int i;
dctelem_t * p_pre = p_vdec->p_pre_idct;
memset( p_pre, 0, 64*64*sizeof(dctelem_t) );
for( i=0 ; i < 64 ; i++ )
{
p_pre[i*64+i] = 1 << SPARSE_SCALE_FACTOR;
vdec_IDCT( p_vdec, &p_pre[i*64], 0) ;
}
return;
}
/*****************************************************************************
* vdec_IDCT : IDCT function for normal matrices
*****************************************************************************/
static void vdec_IDCT( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_idontcare )
void vdec_IDCT( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_idontcare )
{
s32 tmp0, tmp1, tmp2, tmp3;
s32 tmp10, tmp11, tmp12, tmp13;
......
......@@ -2,7 +2,7 @@
* idct.h : macros for the inverse discrete cosine transform
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: idct.h,v 1.1 2001/01/13 12:57:20 sam Exp $
* $Id: idct.h,v 1.2 2001/01/17 18:17:30 massiot Exp $
*
* Authors: Gaël Hendryckx <jimmy@via.ecp.fr>
* Christophe Massiot <massiot@via.ecp.fr>
......@@ -26,7 +26,7 @@
#define DCTSIZE 8 /* 8*8 DCT */
/*****************************************************************************
* Macros
* Macros
*****************************************************************************/
/* We assume that right shift corresponds to signed division by 2 with
......@@ -140,3 +140,12 @@
#define MULTIPLY(var,const) ((var) * (const))
#endif
/*****************************************************************************
* Protoypes
*****************************************************************************/
void vdec_SparseIDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_sparse_pos);
void vdec_InitIDCT ( vdec_thread_t * p_vdec );
void vdec_IDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_idontcare );
......@@ -2,7 +2,7 @@
* idct_common.c : common IDCT functions
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: idct_common.c,v 1.2 2001/01/15 06:18:23 sam Exp $
* $Id: idct_common.c,v 1.3 2001/01/17 18:17:30 massiot Exp $
*
* Authors: Gal Hendryckx <jimmy@via.ecp.fr>
*
......@@ -40,8 +40,23 @@
#include "idct.h"
void vdec_SparseIDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_sparse_pos);
/*****************************************************************************
* vdec_InitIDCT : initialize datas for vdec_SparseIDCT
*****************************************************************************/
void vdec_InitIDCT (vdec_thread_t * p_vdec)
{
int i;
dctelem_t * p_pre = p_vdec->p_pre_idct;
memset( p_pre, 0, 64*64*sizeof(dctelem_t) );
for( i=0 ; i < 64 ; i++ )
{
p_pre[i*64+i] = 1 << SPARSE_SCALE_FACTOR;
vdec_IDCT( p_vdec, &p_pre[i*64], 0) ;
}
return;
}
/*****************************************************************************
* vdec_SparseIDCT : IDCT function for sparse matrices
......
/*****************************************************************************
* idct_mmxext.c : MMX EXT IDCT functions
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: idct_mmxext.c,v 1.1 2001/01/16 13:26:46 sam Exp $
*
* Authors:
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include "defs.h"
#include <stdlib.h>
#include "config.h"
#include "common.h"
#include "threads.h"
#include "mtime.h"
#include "tests.h"
#include "video.h"
#include "video_output.h"
#include "video_decoder.h"
#include "idct.h"
/*****************************************************************************
* Local and extern prototypes.
*****************************************************************************/
void vdec_InitIDCT ( vdec_thread_t * p_vdec);
void vdec_SparseIDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_sparse_pos);
void vdec_IDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_idontcare );
/*****************************************************************************
* vdec_InitIDCT : initialize datas for vdec_SparseIDCT
*****************************************************************************/
void vdec_InitIDCT (vdec_thread_t * p_vdec)
{
return;
}
/*****************************************************************************
* vdec_IDCT : IDCT function for normal matrices
*****************************************************************************/
void vdec_IDCT( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_idontcare )
{
return;
}
/*****************************************************************************
* vdec_SparseIDCT : IDCT function for sparse matrices
*****************************************************************************/
void vdec_SparseIDCT( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_sparse_pos )
{
return;
}
......@@ -2,7 +2,7 @@
* idctclassic.c : Classic IDCT module
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: idctclassic.c,v 1.4 2001/01/16 05:04:25 sam Exp $
* $Id: idctclassic.c,v 1.5 2001/01/17 18:17:30 massiot Exp $
*
* Authors: Gaël Hendryckx <jimmy@via.ecp.fr>
*
......@@ -50,13 +50,8 @@
* Local and extern prototypes.
*****************************************************************************/
static void idct_getfunctions( function_list_t * p_function_list );
static int idct_Probe ( probedata_t *p_data );
static void vdec_InitIDCT ( vdec_thread_t * p_vdec);
void vdec_SparseIDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_sparse_pos);
static void vdec_IDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_idontcare );
static void vdec_NormScan ( u8 ppi_scan[2][64] );
/*****************************************************************************
......@@ -136,6 +131,7 @@ static void idct_getfunctions( function_list_t * p_function_list )
p_function_list->functions.idct.pf_init = vdec_InitIDCT;
p_function_list->functions.idct.pf_sparse_idct = vdec_SparseIDCT;
p_function_list->functions.idct.pf_idct = vdec_IDCT;
p_function_list->functions.idct.pf_norm_scan = vdec_NormScan;
}
/*****************************************************************************
......@@ -153,28 +149,17 @@ static int idct_Probe( probedata_t *p_data )
}
/*****************************************************************************
* vdec_InitIDCT : initialize datas for vdec_SparseIDCT
* vdec_NormScan : Unused in this IDCT
*****************************************************************************/
static void vdec_InitIDCT (vdec_thread_t * p_vdec)
static void vdec_NormScan( u8 ppi_scan[2][64] )
{
int i;
dctelem_t * p_pre = p_vdec->p_pre_idct;
memset( p_pre, 0, 64*64*sizeof(dctelem_t) );
for( i=0 ; i < 64 ; i++ )
{
p_pre[i*64+i] = 1 << SPARSE_SCALE_FACTOR;
vdec_IDCT( p_vdec, &p_pre[i*64], 0) ;
}
return;
}
/*****************************************************************************
* vdec_IDCT : IDCT function for normal matrices
*****************************************************************************/
static void vdec_IDCT( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_idontcare )
void vdec_IDCT( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_idontcare )
{
/* dct classique: pour tester la meilleure entre la classique et la */
/* no classique */
......
......@@ -2,9 +2,13 @@
* idctmmx.c : MMX IDCT module
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: idctmmx.c,v 1.5 2001/01/16 16:09:52 sam Exp $
* $Id: idctmmx.c,v 1.6 2001/01/17 18:17:30 massiot Exp $
*
* Authors: Gaël Hendryckx <jimmy@via.ecp.fr>
* Authors: Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
* Michel Lespinasse <walken@zoy.org>
* Peter Gubanov <peter@elecard.net.ru>
* (from the LiViD project)
* Christophe Massiot <massiot@via.ecp.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
......@@ -46,17 +50,15 @@
#include "idct.h"
#include "attributes.h"
#include "mmx.h"
/*****************************************************************************
* Local prototypes.
*****************************************************************************/
static void idct_getfunctions( function_list_t * p_function_list );
static int idct_Probe ( probedata_t *p_data );
static void vdec_InitIDCT ( vdec_thread_t * p_vdec);
void vdec_SparseIDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_sparse_pos);
void vdec_IDCT ( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_idontcare );
static void vdec_NormScan ( u8 ppi_scan[2][64] );
/*****************************************************************************
......@@ -127,8 +129,7 @@ int DeactivateModule( module_t * p_module )
/* Following functions are local */
/*****************************************************************************
* Functions exported as capabilities. They are declared as static so that
* we don't pollute the namespace too much.
* Functions exported as capabilities.
*****************************************************************************/
static void idct_getfunctions( function_list_t * p_function_list )
{
......@@ -136,6 +137,7 @@ static void idct_getfunctions( function_list_t * p_function_list )
p_function_list->functions.idct.pf_init = vdec_InitIDCT;
p_function_list->functions.idct.pf_sparse_idct = vdec_SparseIDCT;
p_function_list->functions.idct.pf_idct = vdec_IDCT;
p_function_list->functions.idct.pf_norm_scan = vdec_NormScan;
}
/*****************************************************************************
......@@ -149,10 +151,10 @@ static int idct_Probe( probedata_t *p_data )
{
return( 999 );
}
else
else
{
return( 100 );
}
}
}
else
{
......@@ -161,20 +163,348 @@ static int idct_Probe( probedata_t *p_data )
}
/*****************************************************************************
* vdec_InitIDCT : initialize datas for vdec_SparceIDCT
* vdec_NormScan : This IDCT uses reordered coeffs, so we patch the scan table
*****************************************************************************/
static void vdec_InitIDCT (vdec_thread_t * p_vdec)
static void vdec_NormScan( u8 ppi_scan[2][64] )
{
int i;
dctelem_t * p_pre = p_vdec->p_pre_idct;
memset( p_pre, 0, 64*64*sizeof(dctelem_t) );
int i, j;
for( i=0 ; i < 64 ; i++ )
for( i = 0; i < 64; i++ )
{
p_pre[i*64+i] = 1 << SPARSE_SCALE_FACTOR;
vdec_IDCT( p_vdec, &p_pre[i*64], 0) ;
j = ppi_scan[0][i];
ppi_scan[0][i] = (j & 0x38) | ((j & 6) >> 1) | ((j & 1) << 2);
j = ppi_scan[1][i];
ppi_scan[1][i] = (j & 0x38) | ((j & 6) >> 1) | ((j & 1) << 2);
}
return;
}
/*****************************************************************************
* vdec_IDCT :
*****************************************************************************/
#define ROW_SHIFT 11
#define COL_SHIFT 6
#define round(bias) ((int)(((bias)+0.5) * (1<<ROW_SHIFT)))
#define rounder(bias) {round (bias), round (bias)}
#define table(c1,c2,c3,c4,c5,c6,c7) { c4, c2, c4, c6, \
c4, c6, -c4, -c2, \
c1, c3, c3, -c7, \
c5, c7, -c1, -c5, \
c4, -c6, c4, -c2, \
-c4, c2, c4, -c6, \
c5, -c1, c7, -c5, \
c7, c3, c3, -c1 }
static __inline__ void RowHead( dctelem_t * row, int offset, dctelem_t * table )
{
movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
movq_m2r (*table, mm3); // mm3 = C6 C4 C2 C4
movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
punpckldq_r2r (mm0, mm0); // mm0 = x2 x0 x2 x0
movq_m2r (*(table+4), mm4); // mm4 = -C2 -C4 C6 C4
pmaddwd_r2r (mm0, mm3); // mm3 = C4*x0+C6*x2 C4*x0+C2*x2
movq_m2r (*(table+8), mm1); // mm1 = -C7 C3 C3 C1
punpckhdq_r2r (mm2, mm2); // mm2 = x6 x4 x6 x4
}
static __inline__ void Row( dctelem_t * table, s32 * rounder )
{
pmaddwd_r2r (mm2, mm4); // mm4 = -C4*x4-C2*x6 C4*x4+C6*x6
punpckldq_r2r (mm5, mm5); // mm5 = x3 x1 x3 x1
pmaddwd_m2r (*(table+16), mm0); // mm0 = C4*x0-C2*x2 C4*x0-C6*x2
punpckhdq_r2r (mm6, mm6); // mm6 = x7 x5 x7 x5
movq_m2r (*(table+12), mm7); // mm7 = -C5 -C1 C7 C5
pmaddwd_r2r (mm5, mm1); // mm1 = C3*x1-C7*x3 C1*x1+C3*x3
paddd_m2r (*rounder, mm3); // mm3 += rounder
pmaddwd_r2r (mm6, mm7); // mm7 = -C1*x5-C5*x7 C5*x5+C7*x7
pmaddwd_m2r (*(table+20), mm2); // mm2 = C4*x4-C6*x6 -C4*x4+C2*x6
paddd_r2r (mm4, mm3); // mm3 = a1 a0 + rounder
pmaddwd_m2r (*(table+24), mm5); // mm5 = C7*x1-C5*x3 C5*x1-C1*x3
movq_r2r (mm3, mm4); // mm4 = a1 a0 + rounder
pmaddwd_m2r (*(table+28), mm6); // mm6 = C3*x5-C1*x7 C7*x5+C3*x7
paddd_r2r (mm7, mm1); // mm1 = b1 b0
paddd_m2r (*rounder, mm0); // mm0 += rounder
psubd_r2r (mm1, mm3); // mm3 = a1-b1 a0-b0 + rounder
psrad_i2r (ROW_SHIFT, mm3); // mm3 = y6 y7
paddd_r2r (mm4, mm1); // mm1 = a1+b1 a0+b0 + rounder
paddd_r2r (mm2, mm0); // mm0 = a3 a2 + rounder
psrad_i2r (ROW_SHIFT, mm1); // mm1 = y1 y0
paddd_r2r (mm6, mm5); // mm5 = b3 b2
movq_r2r (mm0, mm7); // mm7 = a3 a2 + rounder
paddd_r2r (mm5, mm0); // mm0 = a3+b3 a2+b2 + rounder
psubd_r2r (mm5, mm7); // mm7 = a3-b3 a2-b2 + rounder
}
static __inline__ void RowTail( dctelem_t * row, int store )
{
psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
psrad_i2r (ROW_SHIFT, mm7); // mm7 = y4 y5
packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
packssdw_r2r (mm3, mm7); // mm7 = y6 y7 y4 y5
movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
movq_r2r (mm7, mm4); // mm4 = y6 y7 y4 y5
pslld_i2r (16, mm7); // mm7 = y7 0 y5 0
psrld_i2r (16, mm4); // mm4 = 0 y6 0 y4
por_r2r (mm4, mm7); // mm7 = y7 y6 y5 y4
// slot
movq_r2m (mm7, *(row+store+4)); // save y7 y6 y5 y4
}
static __inline__ void RowMid( dctelem_t * row, int store,
int offset, dctelem_t * table )
{
movq_m2r (*(row+offset), mm2); // mm2 = x6 x4 x2 x0
psrad_i2r (ROW_SHIFT, mm0); // mm0 = y3 y2
movq_m2r (*(row+offset+4), mm5); // mm5 = x7 x5 x3 x1
psrad_i2r (ROW_SHIFT, mm7); // mm7 = y4 y5
packssdw_r2r (mm0, mm1); // mm1 = y3 y2 y1 y0
movq_r2r (mm5, mm6); // mm6 = x7 x5 x3 x1
packssdw_r2r (mm3, mm7); // mm7 = y6 y7 y4 y5
movq_r2r (mm2, mm0); // mm0 = x6 x4 x2 x0
movq_r2m (mm1, *(row+store)); // save y3 y2 y1 y0
movq_r2r (mm7, mm1); // mm1 = y6 y7 y4 y5
punpckldq_r2r (mm0, mm0); // mm0 = x2 x0 x2 x0
psrld_i2r (16, mm7); // mm7 = 0 y6 0 y4
movq_m2r (*table, mm3); // mm3 = C6 C4 C2 C4
pslld_i2r (16, mm1); // mm1 = y7 0 y5 0
movq_m2r (*(table+4), mm4); // mm4 = -C2 -C4 C6 C4
por_r2r (mm1, mm7); // mm7 = y7 y6 y5 y4
movq_m2r (*(table+8), mm1); // mm1 = -C7 C3 C3 C1
punpckhdq_r2r (mm2, mm2); // mm2 = x6 x4 x6 x4
movq_r2m (mm7, *(row+store+4)); // save y7 y6 y5 y4
pmaddwd_r2r (mm0, mm3); // mm3 = C4*x0+C6*x2 C4*x0+C2*x2
}
static __inline__ void Col( dctelem_t * col, int offset )
{
#define T1 13036
#define T2 27146
#define T3 43790
#define C4 23170
static short _T1[] ATTR_ALIGN(8) = {T1,T1,T1,T1};
static short _T2[] ATTR_ALIGN(8) = {T2,T2,T2,T2};
static short _T3[] ATTR_ALIGN(8) = {T3,T3,T3,T3};
static short _C4[] ATTR_ALIGN(8) = {C4,C4,C4,C4};
static mmx_t scratch0, scratch1;
/* column code adapted from peter gubanov */
/* http://www.elecard.com/peter/idct.shtml */
movq_m2r (*_T1, mm0); // mm0 = T1
movq_m2r (*(col+offset+1*8), mm1); // mm1 = x1
movq_r2r (mm0, mm2); // mm2 = T1
movq_m2r (*(col+offset+7*8), mm4); // mm4 = x7
pmulhw_r2r (mm1, mm0); // mm0 = T1*x1
movq_m2r (*_T3, mm5); // mm5 = T3
pmulhw_r2r (mm4, mm2); // mm2 = T1*x7
movq_m2r (*(col+offset+5*8), mm6); // mm6 = x5
movq_r2r (mm5, mm7); // mm7 = T3-1
movq_m2r (*(col+offset+3*8), mm3); // mm3 = x3
psubsw_r2r (mm4, mm0); // mm0 = v17
movq_m2r (*_T2, mm4); // mm4 = T2
pmulhw_r2r (mm3, mm5); // mm5 = (T3-1)*x3
paddsw_r2r (mm2, mm1); // mm1 = u17
pmulhw_r2r (mm6, mm7); // mm7 = (T3-1)*x5
//slot
movq_r2r (mm4, mm2); // mm2 = T2
paddsw_r2r (mm3, mm5); // mm5 = T3*x3
pmulhw_m2r (*(col+offset+2*8), mm4);// mm4 = T2*x2
paddsw_r2r (mm6, mm7); // mm7 = T3*x5
psubsw_r2r (mm6, mm5); // mm5 = v35
paddsw_r2r (mm3, mm7); // mm7 = u35
movq_m2r (*(col+offset+6*8), mm3); // mm3 = x6
movq_r2r (mm0, mm6); // mm6 = v17
pmulhw_r2r (mm3, mm2); // mm2 = T2*x6
psubsw_r2r (mm5, mm0); // mm0 = b3
psubsw_r2r (mm3, mm4); // mm4 = v26
paddsw_r2r (mm6, mm5); // mm5 = v12
movq_r2m (mm0, scratch0); // save b3
movq_r2r (mm1, mm6); // mm6 = u17
paddsw_m2r (*(col+offset+2*8), mm2);// mm2 = u26
paddsw_r2r (mm7, mm6); // mm6 = b0
psubsw_r2r (mm7, mm1); // mm1 = u12
movq_r2r (mm1, mm7); // mm7 = u12
movq_m2r (*(col+offset+0*8), mm3); // mm3 = x0
paddsw_r2r (mm5, mm1); // mm1 = u12+v12
movq_m2r (*_C4, mm0); // mm0 = C4/2
psubsw_r2r (mm5, mm7); // mm7 = u12-v12
movq_r2m (mm6, scratch1); // save b0
pmulhw_r2r (mm0, mm1); // mm1 = b1/2
movq_r2r (mm4, mm6); // mm6 = v26
pmulhw_r2r (mm0, mm7); // mm7 = b2/2
movq_m2r (*(col+offset+4*8), mm5); // mm5 = x4
movq_r2r (mm3, mm0); // mm0 = x0
psubsw_r2r (mm5, mm3); // mm3 = v04
paddsw_r2r (mm5, mm0); // mm0 = u04
paddsw_r2r (mm3, mm4); // mm4 = a1
movq_r2r (mm0, mm5); // mm5 = u04
psubsw_r2r (mm6, mm3); // mm3 = a2
paddsw_r2r (mm2, mm5); // mm5 = a0
paddsw_r2r (mm1, mm1); // mm1 = b1
psubsw_r2r (mm2, mm0); // mm0 = a3
paddsw_r2r (mm7, mm7); // mm7 = b2
movq_r2r (mm3, mm2); // mm2 = a2
movq_r2r (mm4, mm6); // mm6 = a1
paddsw_r2r (mm7, mm3); // mm3 = a2+b2
psraw_i2r (COL_SHIFT, mm3); // mm3 = y2
paddsw_r2r (mm1, mm4); // mm4 = a1+b1
psraw_i2r (COL_SHIFT, mm4); // mm4 = y1
psubsw_r2r (mm1, mm6); // mm6 = a1-b1
movq_m2r (scratch1, mm1); // mm1 = b0
psubsw_r2r (mm7, mm2); // mm2 = a2-b2
psraw_i2r (COL_SHIFT, mm6); // mm6 = y6
movq_r2r (mm5, mm7); // mm7 = a0
movq_r2m (mm4, *(col+offset+1*8)); // save y1
psraw_i2r (COL_SHIFT, mm2); // mm2 = y5
movq_r2m (mm3, *(col+offset+2*8)); // save y2
paddsw_r2r (mm1, mm5); // mm5 = a0+b0
movq_m2r (scratch0, mm4); // mm4 = b3
psubsw_r2r (mm1, mm7); // mm7 = a0-b0
psraw_i2r (COL_SHIFT, mm5); // mm5 = y0
movq_r2r (mm0, mm3); // mm3 = a3
movq_r2m (mm2, *(col+offset+5*8)); // save y5
psubsw_r2r (mm4, mm3); // mm3 = a3-b3
psraw_i2r (COL_SHIFT, mm7); // mm7 = y7
paddsw_r2r (mm0, mm4); // mm4 = a3+b3
movq_r2m (mm5, *(col+offset+0*8)); // save y0
psraw_i2r (COL_SHIFT, mm3); // mm3 = y4
movq_r2m (mm6, *(col+offset+6*8)); // save y6
psraw_i2r (COL_SHIFT, mm4); // mm4 = y3
movq_r2m (mm7, *(col+offset+7*8)); // save y7
movq_r2m (mm3, *(col+offset+4*8)); // save y4
movq_r2m (mm4, *(col+offset+3*8)); // save y3
}
static s32 rounder0[] ATTR_ALIGN(8) =
rounder ((1 << (COL_SHIFT - 1)) - 0.5);
static s32 rounder4[] ATTR_ALIGN(8) = rounder (0);
static s32 rounder1[] ATTR_ALIGN(8) =
rounder (1.25683487303); // C1*(C1/C4+C1+C7)/2
static s32 rounder7[] ATTR_ALIGN(8) =
rounder (-0.25); // C1*(C7/C4+C7-C1)/2
static s32 rounder2[] ATTR_ALIGN(8) =
rounder (0.60355339059); // C2 * (C6+C2)/2
static s32 rounder6[] ATTR_ALIGN(8) =
rounder (-0.25); // C2 * (C6-C2)/2
static s32 rounder3[] ATTR_ALIGN(8) =
rounder (0.087788325588); // C3*(-C3/C4+C3+C5)/2
static s32 rounder5[] ATTR_ALIGN(8) =
rounder (-0.441341716183); // C3*(-C5/C4+C5-C3)/2
void vdec_IDCT( vdec_thread_t * p_vdec, dctelem_t * p_block,
int i_idontcare )
{
static dctelem_t table04[] ATTR_ALIGN(16) =
table (22725, 21407, 19266, 16384, 12873, 8867, 4520);
static dctelem_t table17[] ATTR_ALIGN(16) =
table (31521, 29692, 26722, 22725, 17855, 12299, 6270);
static dctelem_t table26[] ATTR_ALIGN(16) =
table (29692, 27969, 25172, 21407, 16819, 11585, 5906);
static dctelem_t table35[] ATTR_ALIGN(16) =
table (26722, 25172, 22654, 19266, 15137, 10426, 5315);
RowHead( p_block, 0*8, table04 );
Row( table04, rounder0 );
RowMid( p_block, 0*8, 4*8, table04 );
Row( table04, rounder4 );
RowMid( p_block, 4*8, 1*8, table17 );
Row( table17, rounder1 );
RowMid( p_block, 1*8, 7*8, table17 );
Row( table17, rounder7 );
RowMid( p_block, 7*8, 2*8, table26 );
Row( table26, rounder2 );
RowMid( p_block, 2*8, 6*8, table26 );
Row( table26, rounder6 );
RowMid( p_block, 6*8, 3*8, table35 );
Row( table35, rounder3 );
RowMid( p_block, 3*8, 5*8, table35 );
Row( table35, rounder5 );
RowTail( p_block, 5*8);
Col( p_block, 0 );
Col( p_block, 4 );
}