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submodule
ffmpeg
Commits
1fb8f6a4
Commit
1fb8f6a4
authored
Oct 31, 2012
by
Justin Ruggles
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Plain Diff
x86: lavr: add SSE2 quantize() for dithering
parent
142c3909
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5 changed files
with
102 additions
and
0 deletions
+102
-0
dither.c
libavresample/dither.c
+3
-0
dither.h
libavresample/dither.h
+5
-0
Makefile
libavresample/x86/Makefile
+2
-0
dither.asm
libavresample/x86/dither.asm
+53
-0
dither_init.c
libavresample/x86/dither_init.c
+39
-0
No files found.
libavresample/dither.c
View file @
1fb8f6a4
...
@@ -336,6 +336,9 @@ static void dither_init(DitherDSPContext *ddsp,
...
@@ -336,6 +336,9 @@ static void dither_init(DitherDSPContext *ddsp,
ddsp
->
dither_int_to_float
=
dither_int_to_float_rectangular_c
;
ddsp
->
dither_int_to_float
=
dither_int_to_float_rectangular_c
;
else
else
ddsp
->
dither_int_to_float
=
dither_int_to_float_triangular_c
;
ddsp
->
dither_int_to_float
=
dither_int_to_float_triangular_c
;
if
(
ARCH_X86
)
ff_dither_init_x86
(
ddsp
,
method
);
}
}
DitherContext
*
ff_dither_alloc
(
AVAudioResampleContext
*
avr
,
DitherContext
*
ff_dither_alloc
(
AVAudioResampleContext
*
avr
,
...
...
libavresample/dither.h
View file @
1fb8f6a4
...
@@ -85,4 +85,9 @@ void ff_dither_free(DitherContext **c);
...
@@ -85,4 +85,9 @@ void ff_dither_free(DitherContext **c);
*/
*/
int
ff_convert_dither
(
DitherContext
*
c
,
AudioData
*
dst
,
AudioData
*
src
);
int
ff_convert_dither
(
DitherContext
*
c
,
AudioData
*
dst
,
AudioData
*
src
);
/* arch-specific initialization functions */
void
ff_dither_init_x86
(
DitherDSPContext
*
ddsp
,
enum
AVResampleDitherMethod
method
);
#endif
/* AVRESAMPLE_DITHER_H */
#endif
/* AVRESAMPLE_DITHER_H */
libavresample/x86/Makefile
View file @
1fb8f6a4
OBJS
+=
x86/audio_convert_init.o
\
OBJS
+=
x86/audio_convert_init.o
\
x86/audio_mix_init.o
\
x86/audio_mix_init.o
\
x86/dither_init.o
\
YASM-OBJS
+=
x86/audio_convert.o
\
YASM-OBJS
+=
x86/audio_convert.o
\
x86/audio_mix.o
\
x86/audio_mix.o
\
x86/dither.o
\
libavresample/x86/dither.asm
0 → 100644
View file @
1fb8f6a4
;******************************************************************************
;* x86 optimized dithering format conversion
;* Copyright (c) 2012 Justin Ruggles <justin.ruggles@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/x86/x86util.asm"
SECTION_RODATA
32
pf_s16_scale
:
times
4
dd
32753
.
0
SECTION_TEXT
;------------------------------------------------------------------------------
; void ff_quantize(int16_t *dst, float *src, float *dither, int len);
;------------------------------------------------------------------------------
INIT_XMM
sse2
cglobal
quantize
,
4
,
4
,
3
,
dst
,
src
,
dither
,
len
lea
lenq
,
[
2
*
lend
]
add
dstq
,
lenq
lea
srcq
,
[
srcq
+
2
*
lenq
]
lea
ditherq
,
[
ditherq
+
2
*
lenq
]
neg
lenq
mova
m2
,
[
pf_s16_scale
]
.
loop
:
mulps
m0
,
m2
,
[
srcq
+
2
*
lenq
]
mulps
m1
,
m2
,
[
srcq
+
2
*
lenq
+
mmsize
]
addps
m0
,
[
ditherq
+
2
*
lenq
]
addps
m1
,
[
ditherq
+
2
*
lenq
+
mmsize
]
cvtps2dq
m0
,
m0
cvtps2dq
m1
,
m1
packssdw
m0
,
m1
mova
[
dstq
+
lenq
]
,
m0
add
lenq
,
mmsize
jl
.
loop
REP_RET
libavresample/x86/dither_init.c
0 → 100644
View file @
1fb8f6a4
/*
* Copyright (c) 2012 Justin Ruggles <justin.ruggles@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 "config.h"
#include "libavutil/cpu.h"
#include "libavutil/x86/cpu.h"
#include "libavresample/dither.h"
extern
void
ff_quantize_sse2
(
int16_t
*
dst
,
const
float
*
src
,
float
*
dither
,
int
len
);
av_cold
void
ff_dither_init_x86
(
DitherDSPContext
*
ddsp
,
enum
AVResampleDitherMethod
method
)
{
int
mm_flags
=
av_get_cpu_flags
();
if
(
EXTERNAL_SSE2
(
mm_flags
))
{
ddsp
->
quantize
=
ff_quantize_sse2
;
ddsp
->
ptr_align
=
16
;
ddsp
->
samples_align
=
8
;
}
}
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