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libavfilter
vf_setfield.c
Go to the documentation of this file.
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/*
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* Copyright (c) 2012 Stefano Sabatini
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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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* set field order
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*/
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#include "
libavutil/opt.h
"
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#include "
avfilter.h
"
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#include "
internal.h
"
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#include "
video.h
"
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enum
SetFieldMode
{
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MODE_AUTO
= -1,
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MODE_BFF
,
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MODE_TFF
,
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MODE_PROG
,
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};
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typedef
struct
{
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const
AVClass
*
class
;
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enum
SetFieldMode
mode
;
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}
SetFieldContext
;
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#define OFFSET(x) offsetof(SetFieldContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static
const
AVOption
setfield_options
[] = {
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{
"mode"
,
"select interlace mode"
,
OFFSET
(
mode
),
AV_OPT_TYPE_INT
, {.i64=
MODE_AUTO
}, -1,
MODE_PROG
,
FLAGS
,
"mode"
},
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{
"auto"
,
"keep the same input field"
, 0,
AV_OPT_TYPE_CONST
, {.i64=
MODE_AUTO
}, INT_MIN, INT_MAX,
FLAGS
,
"mode"
},
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{
"bff"
,
"mark as bottom-field-first"
, 0,
AV_OPT_TYPE_CONST
, {.i64=
MODE_BFF
}, INT_MIN, INT_MAX,
FLAGS
,
"mode"
},
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{
"tff"
,
"mark as top-field-first"
, 0,
AV_OPT_TYPE_CONST
, {.i64=
MODE_TFF
}, INT_MIN, INT_MAX,
FLAGS
,
"mode"
},
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{
"prog"
,
"mark as progressive"
, 0,
AV_OPT_TYPE_CONST
, {.i64=
MODE_PROG
}, INT_MIN, INT_MAX,
FLAGS
,
"mode"
},
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{NULL}
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};
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AVFILTER_DEFINE_CLASS
(setfield);
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static
int
filter_frame
(
AVFilterLink
*inlink,
AVFrame
*picref)
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{
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SetFieldContext
*setfield = inlink->
dst
->
priv
;
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if
(setfield->
mode
==
MODE_PROG
) {
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picref->
interlaced_frame
= 0;
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}
else
if
(setfield->
mode
!=
MODE_AUTO
) {
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picref->
interlaced_frame
= 1;
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picref->
top_field_first
= setfield->
mode
;
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}
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return
ff_filter_frame
(inlink->
dst
->
outputs
[0], picref);
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}
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static
const
AVFilterPad
setfield_inputs
[] = {
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{
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.
name
=
"default"
,
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.type =
AVMEDIA_TYPE_VIDEO
,
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.get_video_buffer =
ff_null_get_video_buffer
,
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.filter_frame =
filter_frame
,
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},
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{ NULL }
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};
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static
const
AVFilterPad
setfield_outputs
[] = {
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{
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.
name
=
"default"
,
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.type =
AVMEDIA_TYPE_VIDEO
,
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},
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{ NULL }
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};
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AVFilter
avfilter_vf_setfield
= {
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.
name
=
"setfield"
,
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.description =
NULL_IF_CONFIG_SMALL
(
"Force field for the output video frame."
),
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.priv_size =
sizeof
(
SetFieldContext
),
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.
inputs
= setfield_inputs,
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.
outputs
= setfield_outputs,
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.priv_class = &setfield_class,
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};
Generated on Wed Jul 10 2013 23:48:10 for FFmpeg by
1.8.2