3ab9a2a557
This prevents having to sign-extend on 64-bit systems with 32-bit ints, such as x86-64. Also fixes crashes on systems where we don't do it and arguments are not in registers, such as Win64 for all weight functions.
46 lines
1.6 KiB
C
46 lines
1.6 KiB
C
/*
|
|
* RV30/40 MMX/SSE2 optimizations
|
|
* Copyright (C) 2012 Christophe Gisquet <christophe.gisquet@gmail.com>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/x86_cpu.h"
|
|
#include "libavcodec/dsputil.h"
|
|
#include "libavcodec/rv34dsp.h"
|
|
|
|
void ff_rv34_idct_dc_mmx2(DCTELEM *block);
|
|
void ff_rv34_idct_dc_noround_mmx2(DCTELEM *block);
|
|
void ff_rv34_idct_dc_add_mmx(uint8_t *dst, ptrdiff_t stride, int dc);
|
|
void ff_rv34_idct_dc_add_sse4(uint8_t *dst, ptrdiff_t stride, int dc);
|
|
|
|
av_cold void ff_rv34dsp_init_x86(RV34DSPContext* c, DSPContext *dsp)
|
|
{
|
|
#if HAVE_YASM
|
|
int mm_flags = av_get_cpu_flags();
|
|
|
|
if (mm_flags & AV_CPU_FLAG_MMX)
|
|
c->rv34_idct_dc_add = ff_rv34_idct_dc_add_mmx;
|
|
if (mm_flags & AV_CPU_FLAG_MMX2) {
|
|
c->rv34_inv_transform_dc = ff_rv34_idct_dc_noround_mmx2;
|
|
}
|
|
if (mm_flags & AV_CPU_FLAG_SSE4)
|
|
c->rv34_idct_dc_add = ff_rv34_idct_dc_add_sse4;
|
|
#endif
|
|
}
|