Commit 36306a18 authored by Laurent Aimar's avatar Laurent Aimar

Added a new "video splitter" module type.

It will be used to create multiple video from one without having to fake
a video output (and all its overhead).
parent a65e5abc
/*****************************************************************************
* vlc_video_splitter.h: "video splitter" related structures and functions
*****************************************************************************
* Copyright (C) 2009 Laurent Aimar
* $Id$
*
* Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
#ifndef VLC_VIDEO_SPLITTER_H
#define VLC_VIDEO_SPLITTER_H 1
#include <vlc_es.h>
#include <vlc_picture.h>
#include <vlc_mouse.h>
/**
* \file
* This file defines the structure and types used by video splitter filters.
*/
typedef struct video_splitter_t video_splitter_t;
typedef struct video_splitter_sys_t video_splitter_sys_t;
typedef struct video_splitter_owner_t video_splitter_owner_t;
/** Structure describing a video splitter output properties
*/
typedef struct
{
/* Video format of the output */
video_format_t fmt;
/* Window hints */
struct
{
/* Position
* Use (-1,-1) if you do not wish to force a position.
*/
int i_x;
int i_y;
/* Alignment inside the window
* Use 0 for default.
*/
int i_align;
} window;
/* Video output module
* Use NULL for default
*/
char *psz_module;
} video_splitter_output_t;
/** Structure describing a video splitter
*/
struct video_splitter_t
{
VLC_COMMON_MEMBERS
/* Module properties */
module_t *p_module;
/* configuration */
config_chain_t *p_cfg;
/* Input format
* It is filled by the creator and cannot be modified.
*/
video_format_t fmt;
/* Output formats
*
* It can only be set in the open() function and must remain
* constant.
* The module is responsible for the allocation and deallocation.
*/
int i_output;
video_splitter_output_t *p_output;
int (*pf_filter)( video_splitter_t *, picture_t *pp_dst[],
picture_t *p_src );
int (*pf_mouse) ( video_splitter_t *, vlc_mouse_t *,
int i_index,
const vlc_mouse_t *p_old, const vlc_mouse_t *p_new );
video_splitter_sys_t *p_sys;
/* Buffer allocation */
int (*pf_picture_new) ( video_splitter_t *, picture_t *pp_picture[] );
void (*pf_picture_del) ( video_splitter_t *, picture_t *pp_picture[] );
video_splitter_owner_t *p_owner;
};
/**
* It will create an array of pictures suitable as output.
*
* You must either returned them through pf_filter or by calling
* video_splitter_DeletePicture.
*
* If VLC_SUCCESS is not returned, pp_picture values are undefined.
*/
static inline int video_splitter_NewPicture( video_splitter_t *p_splitter,
picture_t *pp_picture[] )
{
int i_ret = p_splitter->pf_picture_new( p_splitter, pp_picture );
if( i_ret )
msg_Warn( p_splitter, "can't get output pictures" );
return i_ret;
}
/**
* It will release an array of pictures created by video_splitter_NewPicture.
* Provided for convenience.
*/
static inline void video_splitter_DeletePicture( video_splitter_t *p_splitter,
picture_t *pp_picture[] )
{
p_splitter->pf_picture_del( p_splitter, pp_picture );
}
/* */
VLC_EXPORT( video_splitter_t *, video_splitter_New, ( vlc_object_t *, const char *psz_name, const video_format_t * ) );
VLC_EXPORT( void, video_splitter_Delete, ( video_splitter_t * ) );
static inline int video_splitter_Filter( video_splitter_t *p_splitter,
picture_t *pp_dst[], picture_t *p_src )
{
return p_splitter->pf_filter( p_splitter, pp_dst, p_src );
}
static inline int video_splitter_Mouse( video_splitter_t *p_splitter,
vlc_mouse_t *p_mouse,
int i_index,
const vlc_mouse_t *p_old, const vlc_mouse_t *p_new )
{
if( !p_splitter->pf_mouse )
{
*p_mouse = *p_new;
return VLC_SUCCESS;
}
return p_splitter->pf_mouse( p_splitter, p_mouse, i_index, p_old, p_new );
}
#endif /* VLC_VIDEO_SPLITTER_H */
......@@ -93,6 +93,7 @@ pluginsinclude_HEADERS = \
../include/vlc_url.h \
../include/vlc_variables.h \
../include/vlc_vlm.h \
../include/vlc_video_splitter.h \
../include/vlc_vout.h \
../include/vlc_window.h \
../include/vlc_xml.h \
......
......@@ -445,6 +445,8 @@ __var_Type
video_format_FixRgb
video_format_IsSimilar
video_format_Setup
video_splitter_Delete
video_splitter_New
vlc_avcodec_mutex
vlc_b64_decode
vlc_b64_decode_binary
......
......@@ -106,3 +106,41 @@ void filter_DeleteBlend( filter_t *p_blend )
vlc_object_release( p_blend );
}
/* */
#include <vlc_video_splitter.h>
video_splitter_t *video_splitter_New( vlc_object_t *p_this,
const char *psz_name,
const video_format_t *p_fmt )
{
video_splitter_t *p_splitter = vlc_custom_create( p_this, sizeof(*p_splitter),
VLC_OBJECT_GENERIC, "video splitter" );
if( !p_splitter )
return NULL;
video_format_Copy( &p_splitter->fmt, p_fmt );
/* */
vlc_object_attach( p_splitter, p_this );
p_splitter->p_module = module_need( p_splitter, "video splitter", psz_name, true );
if( ! p_splitter->p_module )
{
video_splitter_Delete( p_splitter );
return NULL;
}
return p_splitter;
}
void video_splitter_Delete( video_splitter_t *p_splitter )
{
if( p_splitter->p_module )
module_unneed( p_splitter, p_splitter->p_module );
video_format_Clean( &p_splitter->fmt );
vlc_object_detach( p_splitter );
vlc_object_release( p_splitter );
}
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