mirror of https://code.videolan.org/videolan/vlc
142 lines
4.3 KiB
C
142 lines
4.3 KiB
C
/*****************************************************************************
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* vlc_video_splitter.h: "video splitter" related structures and functions
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*****************************************************************************
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* Copyright (C) 2009 Laurent Aimar
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*
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* Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 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 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 License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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*****************************************************************************/
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#ifndef VLC_VIDEO_SPLITTER_H
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#define VLC_VIDEO_SPLITTER_H 1
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#include <vlc_es.h>
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#include <vlc_picture.h>
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#include <vlc_mouse.h>
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#include <vlc_vout_display.h>
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/**
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* \file
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* This file defines the structure and types used by video splitter filters.
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*/
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typedef struct video_splitter_t video_splitter_t;
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struct vlc_window_mouse_event;
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/** Structure describing a video splitter output properties
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*/
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typedef struct
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{
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/* Video format of the output */
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video_format_t fmt;
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/* Video output module
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* Use NULL for default
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*/
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char *psz_module;
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} video_splitter_output_t;
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/** Structure describing a video splitter
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*/
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struct video_splitter_t
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{
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struct vlc_object_t obj;
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/* Module properties */
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module_t *p_module;
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/* configuration */
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config_chain_t *p_cfg;
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/* Input format
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* It is filled by the creator and cannot be modified.
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*/
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video_format_t fmt;
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/* Output formats
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*
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* It can only be set in the open() function and must remain
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* constant.
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* The module is responsible for the allocation and deallocation.
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*/
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int i_output;
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video_splitter_output_t *p_output;
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int (*pf_filter)( video_splitter_t *, picture_t *pp_dst[],
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picture_t *p_src );
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int (*mouse)(video_splitter_t *, int idx,
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struct vlc_window_mouse_event *);
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void *p_sys;
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};
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/**
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* It will create an array of pictures suitable as output.
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*
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* You must either returned them through pf_filter or by calling
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* video_splitter_DeletePicture.
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*
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* If VLC_SUCCESS is not returned, pp_picture values are undefined.
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*/
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static inline int video_splitter_NewPicture(video_splitter_t *splitter,
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picture_t *pics[])
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{
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for (int i = 0; i < splitter->i_output; i++) {
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pics[i] = picture_NewFromFormat(&splitter->p_output[i].fmt);
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if (pics[i] == NULL) {
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for (int j = 0; j < i; j++)
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picture_Release(pics[j]);
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msg_Warn(splitter, "can't get output pictures");
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return VLC_EGENERIC;
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}
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}
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return VLC_SUCCESS;
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}
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/**
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* It will release an array of pictures created by video_splitter_NewPicture.
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* Provided for convenience.
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*/
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static inline void video_splitter_DeletePicture( video_splitter_t *p_splitter,
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picture_t *pp_picture[] )
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{
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for (int i = 0; i < p_splitter->i_output; i++)
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picture_Release(pp_picture[i]);
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}
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/* */
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video_splitter_t * video_splitter_New( vlc_object_t *, const char *psz_name, const video_format_t * );
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void video_splitter_Delete( video_splitter_t * );
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static inline int video_splitter_Filter( video_splitter_t *p_splitter,
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picture_t *pp_dst[], picture_t *p_src )
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{
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return p_splitter->pf_filter( p_splitter, pp_dst, p_src );
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}
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static inline int video_splitter_Mouse(video_splitter_t *splitter, int index,
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struct vlc_window_mouse_event *ev)
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{
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return (splitter->mouse != NULL)
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? splitter->mouse(splitter, index, ev) : VLC_SUCCESS;
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}
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#endif /* VLC_VIDEO_SPLITTER_H */
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