mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-28 20:53:54 +02:00
581b5f0b9b
* commit 'e3fcb14347466095839c2a3c47ebecff02da891e': dsputil: Split off IDCT bits into their own context Conflicts: configure libavcodec/aic.c libavcodec/arm/Makefile libavcodec/arm/dsputil_init_arm.c libavcodec/arm/dsputil_init_armv6.c libavcodec/asvdec.c libavcodec/dnxhdenc.c libavcodec/dsputil.c libavcodec/dvdec.c libavcodec/dxva2_mpeg2.c libavcodec/intrax8.c libavcodec/mdec.c libavcodec/mjpegdec.c libavcodec/mjpegenc_common.h libavcodec/mpegvideo.c libavcodec/ppc/dsputil_altivec.h libavcodec/ppc/dsputil_ppc.c libavcodec/ppc/idctdsp.c libavcodec/x86/Makefile libavcodec/x86/dsputil_init.c libavcodec/x86/dsputil_mmx.c libavcodec/x86/dsputil_x86.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
134 lines
4.6 KiB
C
134 lines
4.6 KiB
C
/*
|
|
* SIMD-optimized IDCT-related routines
|
|
* Copyright (c) 2000, 2001 Fabrice Bellard
|
|
* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
|
|
*
|
|
* MMX optimization by Nick Kurshev <nickols_k@mail.ru>
|
|
*
|
|
* 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.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/x86/asm.h"
|
|
#include "idctdsp.h"
|
|
#include "inline_asm.h"
|
|
|
|
#if HAVE_INLINE_ASM
|
|
|
|
void ff_put_pixels_clamped_mmx(const int16_t *block, uint8_t *pixels,
|
|
int line_size)
|
|
{
|
|
const int16_t *p;
|
|
uint8_t *pix;
|
|
|
|
/* read the pixels */
|
|
p = block;
|
|
pix = pixels;
|
|
/* unrolled loop */
|
|
__asm__ volatile (
|
|
"movq (%3), %%mm0 \n\t"
|
|
"movq 8(%3), %%mm1 \n\t"
|
|
"movq 16(%3), %%mm2 \n\t"
|
|
"movq 24(%3), %%mm3 \n\t"
|
|
"movq 32(%3), %%mm4 \n\t"
|
|
"movq 40(%3), %%mm5 \n\t"
|
|
"movq 48(%3), %%mm6 \n\t"
|
|
"movq 56(%3), %%mm7 \n\t"
|
|
"packuswb %%mm1, %%mm0 \n\t"
|
|
"packuswb %%mm3, %%mm2 \n\t"
|
|
"packuswb %%mm5, %%mm4 \n\t"
|
|
"packuswb %%mm7, %%mm6 \n\t"
|
|
"movq %%mm0, (%0) \n\t"
|
|
"movq %%mm2, (%0, %1) \n\t"
|
|
"movq %%mm4, (%0, %1, 2) \n\t"
|
|
"movq %%mm6, (%0, %2) \n\t"
|
|
:: "r" (pix), "r" ((x86_reg) line_size), "r" ((x86_reg) line_size * 3),
|
|
"r" (p)
|
|
: "memory");
|
|
pix += line_size * 4;
|
|
p += 32;
|
|
|
|
// if here would be an exact copy of the code above
|
|
// compiler would generate some very strange code
|
|
// thus using "r"
|
|
__asm__ volatile (
|
|
"movq (%3), %%mm0 \n\t"
|
|
"movq 8(%3), %%mm1 \n\t"
|
|
"movq 16(%3), %%mm2 \n\t"
|
|
"movq 24(%3), %%mm3 \n\t"
|
|
"movq 32(%3), %%mm4 \n\t"
|
|
"movq 40(%3), %%mm5 \n\t"
|
|
"movq 48(%3), %%mm6 \n\t"
|
|
"movq 56(%3), %%mm7 \n\t"
|
|
"packuswb %%mm1, %%mm0 \n\t"
|
|
"packuswb %%mm3, %%mm2 \n\t"
|
|
"packuswb %%mm5, %%mm4 \n\t"
|
|
"packuswb %%mm7, %%mm6 \n\t"
|
|
"movq %%mm0, (%0) \n\t"
|
|
"movq %%mm2, (%0, %1) \n\t"
|
|
"movq %%mm4, (%0, %1, 2) \n\t"
|
|
"movq %%mm6, (%0, %2) \n\t"
|
|
:: "r" (pix), "r" ((x86_reg) line_size), "r" ((x86_reg) line_size * 3),
|
|
"r" (p)
|
|
: "memory");
|
|
}
|
|
|
|
void ff_add_pixels_clamped_mmx(const int16_t *block, uint8_t *pixels,
|
|
int line_size)
|
|
{
|
|
const int16_t *p;
|
|
uint8_t *pix;
|
|
int i;
|
|
|
|
/* read the pixels */
|
|
p = block;
|
|
pix = pixels;
|
|
MOVQ_ZERO(mm7);
|
|
i = 4;
|
|
do {
|
|
__asm__ volatile (
|
|
"movq (%2), %%mm0 \n\t"
|
|
"movq 8(%2), %%mm1 \n\t"
|
|
"movq 16(%2), %%mm2 \n\t"
|
|
"movq 24(%2), %%mm3 \n\t"
|
|
"movq %0, %%mm4 \n\t"
|
|
"movq %1, %%mm6 \n\t"
|
|
"movq %%mm4, %%mm5 \n\t"
|
|
"punpcklbw %%mm7, %%mm4 \n\t"
|
|
"punpckhbw %%mm7, %%mm5 \n\t"
|
|
"paddsw %%mm4, %%mm0 \n\t"
|
|
"paddsw %%mm5, %%mm1 \n\t"
|
|
"movq %%mm6, %%mm5 \n\t"
|
|
"punpcklbw %%mm7, %%mm6 \n\t"
|
|
"punpckhbw %%mm7, %%mm5 \n\t"
|
|
"paddsw %%mm6, %%mm2 \n\t"
|
|
"paddsw %%mm5, %%mm3 \n\t"
|
|
"packuswb %%mm1, %%mm0 \n\t"
|
|
"packuswb %%mm3, %%mm2 \n\t"
|
|
"movq %%mm0, %0 \n\t"
|
|
"movq %%mm2, %1 \n\t"
|
|
: "+m" (*pix), "+m" (*(pix + line_size))
|
|
: "r" (p)
|
|
: "memory");
|
|
pix += line_size * 2;
|
|
p += 16;
|
|
} while (--i);
|
|
}
|
|
|
|
#endif /* HAVE_INLINE_ASM */
|