mirror of https://github.com/FFmpeg/FFmpeg.git
setfield and setrange filters are kept.pull/299/head
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18d391cffe
commit
02ad0416c0
7 changed files with 146 additions and 98 deletions
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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 SetFieldContext { |
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const AVClass *class; |
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int mode; ///< SetFieldMode
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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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.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 ff_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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.priv_class = &setfield_class, |
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.inputs = setfield_inputs, |
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.outputs = setfield_outputs, |
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}; |
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