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avcodec: Add prefetch for mips 

Signed-off-by: Kaustubh Raste <kaustubh.raste@imgtec.com>
Reviewed-by: Manojkumar Bhosale <Manojkumar.Bhosale@imgtec.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Kaustubh Raste 2017-07-12 17:32:32 +05:30 committed by Michael Niedermayer
parent 5688fd77b5
commit df806605f7
4 changed files with 55 additions and 0 deletions
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1
libavcodec/mips/Makefile
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@ -38,6 +38,7 @@ OBJS-$(CONFIG_ME_CMP) += mips/me_cmp_init_mips.o
OBJS-$(CONFIG_MPEG4_DECODER) += mips/xvididct_init_mips.o
OBJS-$(CONFIG_VC1DSP) += mips/vc1dsp_init_mips.o
OBJS-$(CONFIG_WMV2DSP) += mips/wmv2dsp_init_mips.o
OBJS-$(CONFIG_VIDEODSP) += mips/videodsp_init.o
MSA-OBJS-$(CONFIG_HEVC_DECODER) += mips/hevcdsp_msa.o \
mips/hevc_mc_uni_msa.o \
mips/hevc_mc_uniw_msa.o \

51
libavcodec/mips/videodsp_init.c Normal file
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@ -0,0 +1,51 @@
/*
* Copyright (c) 2017 Kaustubh Raste (kaustubh.raste@imgtec.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 "libavutil/attributes.h"
#include "libavutil/mips/asmdefs.h"
#include "libavcodec/videodsp.h"
#if HAVE_MSA
static void prefetch_mips(uint8_t *mem, ptrdiff_t stride, int h)
{
register const uint8_t *p = mem;
__asm__ volatile (
"1: \n\t"
"pref 4, 0(%[p]) \n\t"
"pref 4, 32(%[p]) \n\t"
PTR_ADDIU" %[h], %[h], -1 \n\t"
PTR_ADDU " %[p], %[p], %[stride] \n\t"
"bnez %[h], 1b \n\t"
: [p] "+r" (p), [h] "+r" (h)
: [stride] "r" (stride)
);
}
#endif // #if HAVE_MSA
av_cold void ff_videodsp_init_mips(VideoDSPContext *ctx, int bpc)
{
#if HAVE_MSA
ctx->prefetch = prefetch_mips;
#endif // #if HAVE_MSA
}

2
libavcodec/videodsp.c
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@ -52,4 +52,6 @@ av_cold void ff_videodsp_init(VideoDSPContext *ctx, int bpc)
ff_videodsp_init_ppc(ctx, bpc);
if (ARCH_X86)
ff_videodsp_init_x86(ctx, bpc);
if (ARCH_MIPS)
ff_videodsp_init_mips(ctx, bpc);
}

1
libavcodec/videodsp.h
View File

@ -83,5 +83,6 @@ void ff_videodsp_init_aarch64(VideoDSPContext *ctx, int bpc);
void ff_videodsp_init_arm(VideoDSPContext *ctx, int bpc);
void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc);
void ff_videodsp_init_x86(VideoDSPContext *ctx, int bpc);
void ff_videodsp_init_mips(VideoDSPContext *ctx, int bpc);
#endif /* AVCODEC_VIDEODSP_H */