FFmpeg
libavcodec
rectangle.h
Go to the documentation of this file.
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/*
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* rectangle filling function
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* Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* useful rectangle filling function
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* @author Michael Niedermayer <michaelni@gmx.at>
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*/
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#ifndef AVCODEC_RECTANGLE_H
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#define AVCODEC_RECTANGLE_H
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#include "config.h"
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#include "
libavutil/common.h
"
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#include "
libavutil/avassert.h
"
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/**
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* fill a rectangle.
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* @param h height of the rectangle, should be a constant
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* @param w width of the rectangle, should be a constant
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* @param size the size of val (1, 2 or 4), should be a constant
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*/
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static
av_always_inline
void
fill_rectangle
(
void
*vp,
int
w
,
int
h
,
int
stride
, uint32_t
val
,
int
size
){
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uint8_t *p= (uint8_t*)vp;
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av_assert2
(
size
==1 ||
size
==2 ||
size
==4);
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av_assert2
(
w
<=4);
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w
*=
size
;
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stride
*=
size
;
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av_assert2
((((
long
)vp)&(
FFMIN
(
w
, 8<<(HAVE_NEON|ARCH_PPC|HAVE_MMX))-1)) == 0);
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av_assert2
((
stride
&(
w
-1))==0);
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if
(
w
==2){
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const
uint16_t v=
size
==4 ?
val
:
val
*0x0101;
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*(uint16_t*)(p + 0*
stride
)= v;
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if
(
h
==1)
return
;
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*(uint16_t*)(p + 1*
stride
)= v;
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if
(
h
==2)
return
;
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*(uint16_t*)(p + 2*
stride
)= v;
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*(uint16_t*)(p + 3*
stride
)= v;
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}
else
if
(
w
==4){
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const
uint32_t v=
size
==4 ?
val
:
size
==2 ?
val
*0x00010001 :
val
*0x01010101;
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*(uint32_t*)(p + 0*
stride
)= v;
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if
(
h
==1)
return
;
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*(uint32_t*)(p + 1*
stride
)= v;
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if
(
h
==2)
return
;
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*(uint32_t*)(p + 2*
stride
)= v;
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*(uint32_t*)(p + 3*
stride
)= v;
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}
else
if
(
w
==8){
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// gcc cannot optimize 64-bit math on x86_32
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#if HAVE_FAST_64BIT
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const
uint64_t v=
size
==2 ?
val
*0x0001000100010001ULL :
val
*0x0100000001ULL;
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*(uint64_t*)(p + 0*
stride
)= v;
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if
(
h
==1)
return
;
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*(uint64_t*)(p + 1*
stride
)= v;
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if
(
h
==2)
return
;
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*(uint64_t*)(p + 2*
stride
)= v;
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*(uint64_t*)(p + 3*
stride
)= v;
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}
else
if
(
w
==16){
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const
uint64_t v=
val
*0x0100000001ULL;
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*(uint64_t*)(p + 0+0*
stride
)= v;
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*(uint64_t*)(p + 8+0*
stride
)= v;
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*(uint64_t*)(p + 0+1*
stride
)= v;
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*(uint64_t*)(p + 8+1*
stride
)= v;
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if
(
h
==2)
return
;
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*(uint64_t*)(p + 0+2*
stride
)= v;
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*(uint64_t*)(p + 8+2*
stride
)= v;
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*(uint64_t*)(p + 0+3*
stride
)= v;
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*(uint64_t*)(p + 8+3*
stride
)= v;
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#else
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const
uint32_t v=
size
==2 ?
val
*0x00010001 :
val
;
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*(uint32_t*)(p + 0+0*
stride
)= v;
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*(uint32_t*)(p + 4+0*
stride
)= v;
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if
(
h
==1)
return
;
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*(uint32_t*)(p + 0+1*
stride
)= v;
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*(uint32_t*)(p + 4+1*
stride
)= v;
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if
(
h
==2)
return
;
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*(uint32_t*)(p + 0+2*
stride
)= v;
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*(uint32_t*)(p + 4+2*
stride
)= v;
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*(uint32_t*)(p + 0+3*
stride
)= v;
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*(uint32_t*)(p + 4+3*
stride
)= v;
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}
else
if
(
w
==16){
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*(uint32_t*)(p + 0+0*
stride
)=
val
;
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*(uint32_t*)(p + 4+0*
stride
)=
val
;
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*(uint32_t*)(p + 8+0*
stride
)=
val
;
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*(uint32_t*)(p +12+0*
stride
)=
val
;
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*(uint32_t*)(p + 0+1*
stride
)=
val
;
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*(uint32_t*)(p + 4+1*
stride
)=
val
;
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*(uint32_t*)(p + 8+1*
stride
)=
val
;
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*(uint32_t*)(p +12+1*
stride
)=
val
;
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if
(
h
==2)
return
;
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*(uint32_t*)(p + 0+2*
stride
)=
val
;
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*(uint32_t*)(p + 4+2*
stride
)=
val
;
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*(uint32_t*)(p + 8+2*
stride
)=
val
;
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*(uint32_t*)(p +12+2*
stride
)=
val
;
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*(uint32_t*)(p + 0+3*
stride
)=
val
;
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*(uint32_t*)(p + 4+3*
stride
)=
val
;
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*(uint32_t*)(p + 8+3*
stride
)=
val
;
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*(uint32_t*)(p +12+3*
stride
)=
val
;
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#endif
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}
else
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av_assert2
(0);
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av_assert2
(
h
==4);
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}
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#endif
/* AVCODEC_RECTANGLE_H */
w
uint8_t w
Definition:
llviddspenc.c:38
val
static double val(void *priv, double ch)
Definition:
aeval.c:77
avassert.h
fill_rectangle
static av_always_inline void fill_rectangle(void *vp, int w, int h, int stride, uint32_t val, int size)
fill a rectangle.
Definition:
rectangle.h:41
size
int size
Definition:
twinvq_data.h:10344
av_assert2
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition:
avassert.h:67
common.h
av_always_inline
#define av_always_inline
Definition:
attributes.h:49
FFMIN
#define FFMIN(a, b)
Definition:
macros.h:49
stride
#define stride
Definition:
h264pred_template.c:537
h
h
Definition:
vp9dsp_template.c:2070
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