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// VirtualDub - Video processing and capture application
// Graphics support library
// Copyright (C) 1998-2009 Avery Lee
//
// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
#include <stdafx.h>
#include "blt_spanutils_x86.h"
#ifdef _MSC_VER
#pragma warning(disable: 4799) // warning C4799: function 'nsVDPixmapSpanUtils::vdasm_horiz_expand2x_coaligned_ISSE' has no EMMS instruction
#endif
extern "C" void __cdecl vdasm_horiz_expand2x_coaligned_ISSE(void *dst, const void *src, uint32 count);
extern "C" void __cdecl vdasm_horiz_expand4x_coaligned_MMX(void *dst, const void *src, uint32 count);
extern "C" void __cdecl vdasm_vert_average_13_ISSE(void *dst, const void *src1, const void *src3, uint32 count);
extern "C" void __cdecl vdasm_vert_average_17_ISSE(void *dst, const void *src1, const void *src3, uint32 count);
extern "C" void __cdecl vdasm_vert_average_35_ISSE(void *dst, const void *src1, const void *src3, uint32 count);
namespace nsVDPixmapSpanUtils {
void horiz_expand2x_coaligned_ISSE(uint8 *dst, const uint8 *src, sint32 w) {
if (w >= 17) {
uint32 fastcount = (w - 1) & ~15;
vdasm_horiz_expand2x_coaligned_ISSE(dst, src, fastcount);
dst += fastcount;
src += fastcount >> 1;
w -= fastcount;
}
w = -w;
if ((w+=2) < 0) {
do {
dst[0] = src[0];
dst[1] = (uint8)((src[0] + src[1] + 1)>>1);
dst += 2;
++src;
} while((w+=2)<0);
}
w -= 2;
while(w < 0) {
++w;
*dst++ = src[0];
}
}
void horiz_expand4x_coaligned_MMX(uint8 *dst, const uint8 *src, sint32 w) {
if (w >= 17) {
uint32 fastcount = (w - 1) >> 4;
vdasm_horiz_expand4x_coaligned_MMX(dst, src, fastcount);
dst += fastcount << 4;
src += fastcount << 2;
w -= fastcount << 4;
}
w = -w;
if ((w+=4) < 0) {
do {
dst[0] = src[0];
dst[1] = (uint8)((3*src[0] + src[1] + 2)>>2);
dst[2] = (uint8)((src[0] + src[1] + 1)>>1);
dst[3] = (uint8)((src[0] + 3*src[1] + 2)>>2);
dst += 4;
++src;
} while((w+=4)<0);
}
w -= 4;
while(w < 0) {
++w;
*dst++ = src[0];
}
}
void vert_expand2x_centered_ISSE(uint8 *dst, const uint8 *const *srcs, sint32 w, uint8 phase) {
const uint8 *src3 = srcs[0];
const uint8 *src1 = srcs[1];
if (phase >= 128)
std::swap(src1, src3);
uint32 fastcount = w & ~15;
if (fastcount) {
vdasm_vert_average_13_ISSE(dst, src1, src3, fastcount);
dst += fastcount;
src1 += fastcount;
src3 += fastcount;
w -= fastcount;
}
if (w) {
do {
*dst++ = (uint8)((*src1++ + 3**src3++ + 2) >> 2);
} while(--w);
}
}
void vert_average_1_7_ISSE(uint8 *dst, const uint8 *src7, const uint8 *src1, sint32 w) {
uint32 fastcount = w & ~7;
if (fastcount) {
vdasm_vert_average_17_ISSE(dst, src1, src7, fastcount);
dst += fastcount;
src1 += fastcount;
src7 += fastcount;
w -= fastcount;
}
if (w) {
do {
*dst++ = (uint8)((*src1++ + 7**src7++ + 4) >> 3);
} while(--w);
}
}
void vert_average_3_5_ISSE(uint8 *dst, const uint8 *src7, const uint8 *src1, sint32 w) {
uint32 fastcount = w & ~7;
if (fastcount) {
vdasm_vert_average_35_ISSE(dst, src1, src7, fastcount);
dst += fastcount;
src1 += fastcount;
src7 += fastcount;
w -= fastcount;
}
if (w) {
do {
*dst++ = (uint8)((3**src1++ + 5**src7++ + 4) >> 3);
} while(--w);
}
}
void vert_expand4x_centered_ISSE(uint8 *dst, const uint8 *const *srcs, sint32 w, uint8 phase) {
const uint8 *src1 = srcs[0];
const uint8 *src2 = srcs[1];
switch(phase & 0xc0) {
case 0x00:
vert_average_1_7_ISSE(dst, src2, src1, w);
break;
case 0x40:
vert_average_3_5_ISSE(dst, src2, src1, w);
break;
case 0x80:
vert_average_3_5_ISSE(dst, src1, src2, w);
break;
case 0xc0:
vert_average_1_7_ISSE(dst, src1, src2, w);
break;
default:
VDNEVERHERE;
}
}
}
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