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FFmpeg/libavcodec/x86/dsputil_rnd_template.c

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/*
* DSP utils mmx functions are compiled twice for rnd/no_rnd
* Copyright (c) 2000, 2001 Fabrice Bellard
* Copyright (c) 2003-2004 Michael Niedermayer <michaelni@gmx.at>
*
* MMX optimization by Nick Kurshev <nickols_k@mail.ru>
* mostly rewritten by Michael Niedermayer <michaelni@gmx.at>
* and improved by Zdenek Kabelac <kabi@users.sf.net>
*
* 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
*/
// put_pixels
static void DEF(put, pixels8_xy2)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
{
MOVQ_ZERO(mm7);
SET_RND(mm6); // =2 for rnd and =1 for no_rnd version
__asm__ volatile(
"movq (%1), %%mm0 \n\t"
"movq 1(%1), %%mm4 \n\t"
"movq %%mm0, %%mm1 \n\t"
"movq %%mm4, %%mm5 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
"punpcklbw %%mm7, %%mm4 \n\t"
"punpckhbw %%mm7, %%mm1 \n\t"
"punpckhbw %%mm7, %%mm5 \n\t"
"paddusw %%mm0, %%mm4 \n\t"
"paddusw %%mm1, %%mm5 \n\t"
"xor %%"REG_a", %%"REG_a" \n\t"
"add %3, %1 \n\t"
".p2align 3 \n\t"
"1: \n\t"
"movq (%1, %%"REG_a"), %%mm0 \n\t"
"movq 1(%1, %%"REG_a"), %%mm2 \n\t"
"movq %%mm0, %%mm1 \n\t"
"movq %%mm2, %%mm3 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
"punpckhbw %%mm7, %%mm1 \n\t"
"punpckhbw %%mm7, %%mm3 \n\t"
"paddusw %%mm2, %%mm0 \n\t"
"paddusw %%mm3, %%mm1 \n\t"
"paddusw %%mm6, %%mm4 \n\t"
"paddusw %%mm6, %%mm5 \n\t"
"paddusw %%mm0, %%mm4 \n\t"
"paddusw %%mm1, %%mm5 \n\t"
"psrlw $2, %%mm4 \n\t"
"psrlw $2, %%mm5 \n\t"
"packuswb %%mm5, %%mm4 \n\t"
"movq %%mm4, (%2, %%"REG_a") \n\t"
"add %3, %%"REG_a" \n\t"
"movq (%1, %%"REG_a"), %%mm2 \n\t" // 0 <-> 2 1 <-> 3
"movq 1(%1, %%"REG_a"), %%mm4 \n\t"
"movq %%mm2, %%mm3 \n\t"
"movq %%mm4, %%mm5 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
"punpcklbw %%mm7, %%mm4 \n\t"
"punpckhbw %%mm7, %%mm3 \n\t"
"punpckhbw %%mm7, %%mm5 \n\t"
"paddusw %%mm2, %%mm4 \n\t"
"paddusw %%mm3, %%mm5 \n\t"
"paddusw %%mm6, %%mm0 \n\t"
"paddusw %%mm6, %%mm1 \n\t"
"paddusw %%mm4, %%mm0 \n\t"
"paddusw %%mm5, %%mm1 \n\t"
"psrlw $2, %%mm0 \n\t"
"psrlw $2, %%mm1 \n\t"
"packuswb %%mm1, %%mm0 \n\t"
"movq %%mm0, (%2, %%"REG_a") \n\t"
"add %3, %%"REG_a" \n\t"
"subl $2, %0 \n\t"
"jnz 1b \n\t"
:"+g"(h), "+S"(pixels)
:"D"(block), "r"((x86_reg)line_size)
:REG_a, "memory");
}
// in case more speed is needed - unroling would certainly help
static void DEF(avg, pixels8)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
{
MOVQ_BFE(mm6);
JUMPALIGN();
do {
__asm__ volatile(
"movq %0, %%mm0 \n\t"
"movq %1, %%mm1 \n\t"
OP_AVG(%%mm0, %%mm1, %%mm2, %%mm6)
"movq %%mm2, %0 \n\t"
:"+m"(*block)
:"m"(*pixels)
:"memory");
pixels += line_size;
block += line_size;
}
while (--h);
}
static void DEF(avg, pixels16)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
{
MOVQ_BFE(mm6);
JUMPALIGN();
do {
__asm__ volatile(
"movq %0, %%mm0 \n\t"
"movq %1, %%mm1 \n\t"
OP_AVG(%%mm0, %%mm1, %%mm2, %%mm6)
"movq %%mm2, %0 \n\t"
"movq 8%0, %%mm0 \n\t"
"movq 8%1, %%mm1 \n\t"
OP_AVG(%%mm0, %%mm1, %%mm2, %%mm6)
"movq %%mm2, 8%0 \n\t"
:"+m"(*block)
:"m"(*pixels)
:"memory");
pixels += line_size;
block += line_size;
}
while (--h);
}
// this routine is 'slightly' suboptimal but mostly unused
static void DEF(avg, pixels8_xy2)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h)
{
MOVQ_ZERO(mm7);
SET_RND(mm6); // =2 for rnd and =1 for no_rnd version
__asm__ volatile(
"movq (%1), %%mm0 \n\t"
"movq 1(%1), %%mm4 \n\t"
"movq %%mm0, %%mm1 \n\t"
"movq %%mm4, %%mm5 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
"punpcklbw %%mm7, %%mm4 \n\t"
"punpckhbw %%mm7, %%mm1 \n\t"
"punpckhbw %%mm7, %%mm5 \n\t"
"paddusw %%mm0, %%mm4 \n\t"
"paddusw %%mm1, %%mm5 \n\t"
"xor %%"REG_a", %%"REG_a" \n\t"
"add %3, %1 \n\t"
".p2align 3 \n\t"
"1: \n\t"
"movq (%1, %%"REG_a"), %%mm0 \n\t"
"movq 1(%1, %%"REG_a"), %%mm2 \n\t"
"movq %%mm0, %%mm1 \n\t"
"movq %%mm2, %%mm3 \n\t"
"punpcklbw %%mm7, %%mm0 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
"punpckhbw %%mm7, %%mm1 \n\t"
"punpckhbw %%mm7, %%mm3 \n\t"
"paddusw %%mm2, %%mm0 \n\t"
"paddusw %%mm3, %%mm1 \n\t"
"paddusw %%mm6, %%mm4 \n\t"
"paddusw %%mm6, %%mm5 \n\t"
"paddusw %%mm0, %%mm4 \n\t"
"paddusw %%mm1, %%mm5 \n\t"
"psrlw $2, %%mm4 \n\t"
"psrlw $2, %%mm5 \n\t"
"movq (%2, %%"REG_a"), %%mm3 \n\t"
"packuswb %%mm5, %%mm4 \n\t"
"pcmpeqd %%mm2, %%mm2 \n\t"
"paddb %%mm2, %%mm2 \n\t"
OP_AVG(%%mm3, %%mm4, %%mm5, %%mm2)
"movq %%mm5, (%2, %%"REG_a") \n\t"
"add %3, %%"REG_a" \n\t"
"movq (%1, %%"REG_a"), %%mm2 \n\t" // 0 <-> 2 1 <-> 3
"movq 1(%1, %%"REG_a"), %%mm4 \n\t"
"movq %%mm2, %%mm3 \n\t"
"movq %%mm4, %%mm5 \n\t"
"punpcklbw %%mm7, %%mm2 \n\t"
"punpcklbw %%mm7, %%mm4 \n\t"
"punpckhbw %%mm7, %%mm3 \n\t"
"punpckhbw %%mm7, %%mm5 \n\t"
"paddusw %%mm2, %%mm4 \n\t"
"paddusw %%mm3, %%mm5 \n\t"
"paddusw %%mm6, %%mm0 \n\t"
"paddusw %%mm6, %%mm1 \n\t"
"paddusw %%mm4, %%mm0 \n\t"
"paddusw %%mm5, %%mm1 \n\t"
"psrlw $2, %%mm0 \n\t"
"psrlw $2, %%mm1 \n\t"
"movq (%2, %%"REG_a"), %%mm3 \n\t"
"packuswb %%mm1, %%mm0 \n\t"
"pcmpeqd %%mm2, %%mm2 \n\t"
"paddb %%mm2, %%mm2 \n\t"
OP_AVG(%%mm3, %%mm0, %%mm1, %%mm2)
"movq %%mm1, (%2, %%"REG_a") \n\t"
"add %3, %%"REG_a" \n\t"
"subl $2, %0 \n\t"
"jnz 1b \n\t"
:"+g"(h), "+S"(pixels)
:"D"(block), "r"((x86_reg)line_size)
:REG_a, "memory");
}
//FIXME optimize
static void DEF(put, pixels16_xy2)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h){
DEF(put, pixels8_xy2)(block , pixels , line_size, h);
DEF(put, pixels8_xy2)(block+8, pixels+8, line_size, h);
}
static void DEF(avg, pixels16_xy2)(uint8_t *block, const uint8_t *pixels, ptrdiff_t line_size, int h){
DEF(avg, pixels8_xy2)(block , pixels , line_size, h);
DEF(avg, pixels8_xy2)(block+8, pixels+8, line_size, h);
}