FFmpeg
libavfilter
scene_sad.c
Go to the documentation of this file.
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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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* Scene SAD functions
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*/
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#include "
scene_sad.h
"
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void
ff_scene_sad16_c
(
SCENE_SAD_PARAMS
)
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{
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uint64_t sad = 0;
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const
uint16_t *src1w = (
const
uint16_t *)
src1
;
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const
uint16_t *src2w = (
const
uint16_t *)
src2
;
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int
x, y;
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stride1 /= 2;
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stride2 /= 2;
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for
(y = 0; y <
height
; y++) {
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for
(x = 0; x <
width
; x++)
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sad +=
FFABS
(src1w[x] - src2w[x]);
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src1w += stride1;
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src2w += stride2;
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}
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*sum = sad;
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}
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void
ff_scene_sad_c
(
SCENE_SAD_PARAMS
)
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{
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uint64_t sad = 0;
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int
x, y;
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for
(y = 0; y <
height
; y++) {
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for
(x = 0; x <
width
; x++)
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sad +=
FFABS
(
src1
[x] -
src2
[x]);
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src1
+= stride1;
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src2
+= stride2;
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}
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*sum = sad;
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}
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ff_scene_sad_fn
ff_scene_sad_get_fn
(
int
depth)
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{
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ff_scene_sad_fn
sad =
NULL
;
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#if ARCH_X86
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sad =
ff_scene_sad_get_fn_x86
(depth);
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#endif
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if
(!sad) {
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if
(depth == 8)
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sad =
ff_scene_sad_c
;
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if
(depth == 16)
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sad =
ff_scene_sad16_c
;
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}
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return
sad;
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}
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src1
const pixel * src1
Definition:
h264pred_template.c:421
ff_scene_sad16_c
void ff_scene_sad16_c(SCENE_SAD_PARAMS)
Definition:
scene_sad.c:26
ff_scene_sad_c
void ff_scene_sad_c(SCENE_SAD_PARAMS)
Definition:
scene_sad.c:45
ff_scene_sad_get_fn_x86
ff_scene_sad_fn ff_scene_sad_get_fn_x86(int depth)
Definition:
scene_sad_init.c:46
SCENE_SAD_PARAMS
#define SCENE_SAD_PARAMS
Definition:
scene_sad.h:29
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition:
common.h:74
ff_scene_sad_get_fn
ff_scene_sad_fn ff_scene_sad_get_fn(int depth)
Definition:
scene_sad.c:59
NULL
#define NULL
Definition:
coverity.c:32
scene_sad.h
height
#define height
Definition:
dsp.h:85
ff_scene_sad_fn
void(* ff_scene_sad_fn)(SCENE_SAD_PARAMS)
Definition:
scene_sad.h:34
src2
const pixel * src2
Definition:
h264pred_template.c:422
width
#define width
Definition:
dsp.h:85
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