mirror of
https://code.videolan.org/videolan/vlc
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121 lines
4.1 KiB
C
121 lines
4.1 KiB
C
/*****************************************************************************
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* algo_basic.h : Basic algorithms for the VLC deinterlacer
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*****************************************************************************
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* Copyright (C) 2000-2011 the VideoLAN team
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* $Id$
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*
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* Author: Sam Hocevar <sam@zoy.org>
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* Damien Lucas <nitrox@videolan.org> (Bob, Blend)
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* Laurent Aimar <fenrir@videolan.org> (Bob, Blend)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; 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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#ifndef VLC_DEINTERLACE_ALGO_BASIC_H
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#define VLC_DEINTERLACE_ALGO_BASIC_H 1
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/**
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* \file
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* Basic deinterlace algorithms: Discard, Bob, Linear, Mean and Blend.
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*/
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/* Forward declarations */
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struct filter_t;
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struct picture_t;
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/*****************************************************************************
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* Functions
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*****************************************************************************/
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/**
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* RenderDiscard: only keep top or bottom field, discard the other.
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*
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* For a 2x (framerate-doubling) near-equivalent, see RenderBob().
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*
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* @param p_filter The filter instance. Must be non-NULL.
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* @param p_outpic Output frame. Must be allocated by caller.
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* @param p_pic Input frame. Must exist.
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* @param i_field Keep which field? 0 = top field, 1 = bottom field.
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* @see RenderBob()
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* @see Deinterlace()
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*/
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void RenderDiscard( filter_t *p_filter,
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picture_t *p_outpic, picture_t *p_pic, int i_field );
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/**
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* RenderBob: basic framerate doubler.
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*
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* Creates an illusion of full vertical resolution while running.
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*
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* For a 1x (non-doubling) near-equivalent, see RenderDiscard().
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*
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* @param p_filter The filter instance. Must be non-NULL.
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* @param p_outpic Output frame. Must be allocated by caller.
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* @param p_pic Input frame. Must exist.
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* @param i_field Render which field? 0 = top field, 1 = bottom field.
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* @see RenderLinear()
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* @see Deinterlace()
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*/
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void RenderBob( filter_t *p_filter,
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picture_t *p_outpic, picture_t *p_pic, int i_field );
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/**
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* RenderLinear: Bob with linear interpolation.
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*
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* There is no 1x (non-doubling) equivalent for this filter.
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*
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* @param p_filter The filter instance. Must be non-NULL.
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* @param p_outpic Output frame. Must be allocated by caller.
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* @param p_pic Input frame. Must exist.
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* @param i_field Render which field? 0 = top field, 1 = bottom field.
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* @see RenderBob()
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* @see Deinterlace()
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*/
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void RenderLinear( filter_t *p_filter,
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picture_t *p_outpic, picture_t *p_pic, int i_field );
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/**
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* RenderMean: half-resolution blender.
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*
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* Renders the mean of the top and bottom fields.
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*
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* Obviously, there is no 2x equivalent for this filter.
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*
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* @param p_filter The filter instance. Must be non-NULL.
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* @param p_outpic Output frame. Must be allocated by caller.
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* @param p_pic Input frame. Must exist.
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* @see Deinterlace()
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*/
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void RenderMean( filter_t *p_filter,
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picture_t *p_outpic, picture_t *p_pic );
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/**
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* RenderBlend: full-resolution blender.
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*
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* The first line is copied; for the rest of the lines, line N
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* is the mean of lines N and N-1 in the input.
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*
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* Obviously, there is no 2x equivalent for this filter.
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*
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* @param p_filter The filter instance. Must be non-NULL.
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* @param p_outpic Output frame. Must be allocated by caller.
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* @param p_pic Input frame. Must exist.
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* @see Deinterlace()
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*/
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void RenderBlend( filter_t *p_filter,
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picture_t *p_outpic, picture_t *p_pic );
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#endif
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