Files
ffmpeg/libavfilter/psnr.c
Andreas Rheinhardt 7356981bec avfilter/x86/Makefile: Only compile ASM init files when X86ASM is enabled
To do so, simply add these init files to X86ASM-OBJS instead of OBJS
in the Makefile. The former is already used for the actual assembly
files, but using them for the C init files just works, because the build
system uses file extensions to derive whether it is a C or a NASM file.

This avoids compiling unused function stubs and also reduces our
reliance on DCE: We don't add %if checks to the asm files except
for AVX, AVX2, FMA3, FMA4, XOP and AVX512, so all the MMX-SSE4
functions will be available. It also allows to remove HAVE_X86ASM checks
in these init files.

Reviewed-by: Kacper Michajłow <kasper93@gmail.com>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2025-11-30 22:20:13 +01:00

65 lines
1.7 KiB
C

/*
* Copyright (c) 2015 Ronald S. Bultje <rsbultje@gmail.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.h"
#include <stddef.h>
#include <stdint.h>
#include "psnr.h"
static uint64_t sse_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw)
{
int j;
unsigned m2 = 0;
for (j = 0; j < outw; j++) {
unsigned error = main_line[j] - ref_line[j];
m2 += error * error;
}
return m2;
}
static uint64_t sse_line_16bit(const uint8_t *_main_line, const uint8_t *_ref_line, int outw)
{
int j;
uint64_t m2 = 0;
const uint16_t *main_line = (const uint16_t *) _main_line;
const uint16_t *ref_line = (const uint16_t *) _ref_line;
for (j = 0; j < outw; j++) {
unsigned error = main_line[j] - ref_line[j];
m2 += error * error;
}
return m2;
}
void ff_psnr_init(PSNRDSPContext *dsp, int bpp)
{
dsp->sse_line = bpp > 8 ? sse_line_16bit : sse_line_8bit;
#if ARCH_X86 && HAVE_X86ASM
ff_psnr_init_x86(dsp, bpp);
#endif
}