Fixed filter_*Blend rgb masks initialization.
[vlc.git] / src / misc / filter.c
1 /*****************************************************************************
2  * filter.c : filter_t helpers.
3  *****************************************************************************
4  * Copyright (C) 2009 Laurent Aimar
5  * $Id$
6  *
7  * Author: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22  *****************************************************************************/
23
24 #ifdef HAVE_CONFIG_H
25 # include "config.h"
26 #endif
27
28 #include <vlc_common.h>
29 #include <libvlc.h>
30 #include <vlc_filter.h>
31
32 filter_t *filter_NewBlend( vlc_object_t *p_this,
33                            const video_format_t *p_dst_chroma )
34 {
35     filter_t *p_blend = vlc_custom_create( p_this, sizeof(*p_blend),
36                                            VLC_OBJECT_GENERIC, "blend" );
37     if( !p_blend )
38         return NULL;
39
40     es_format_Init( &p_blend->fmt_in, VIDEO_ES, 0 );
41
42     es_format_Init( &p_blend->fmt_out, VIDEO_ES, 0 );
43
44     p_blend->fmt_out.i_codec        = 
45     p_blend->fmt_out.video.i_chroma = p_dst_chroma->i_chroma;
46     p_blend->fmt_out.video.i_rmask  = p_dst_chroma->i_rmask;
47     p_blend->fmt_out.video.i_gmask  = p_dst_chroma->i_gmask;
48     p_blend->fmt_out.video.i_bmask  = p_dst_chroma->i_bmask;
49     p_blend->fmt_out.video.i_rrshift= p_dst_chroma->i_rrshift;
50     p_blend->fmt_out.video.i_rgshift= p_dst_chroma->i_rgshift;
51     p_blend->fmt_out.video.i_rbshift= p_dst_chroma->i_rbshift;
52     p_blend->fmt_out.video.i_lrshift= p_dst_chroma->i_lrshift;
53     p_blend->fmt_out.video.i_lgshift= p_dst_chroma->i_lgshift;
54     p_blend->fmt_out.video.i_lbshift= p_dst_chroma->i_lbshift;
55
56     /* The blend module will be loaded when needed with the real
57     * input format */
58     p_blend->p_module = NULL;
59
60     /* */
61     vlc_object_attach( p_blend, p_this );
62
63     return p_blend;
64 }
65
66 int filter_ConfigureBlend( filter_t *p_blend,
67                            int i_dst_width, int i_dst_height,
68                            const video_format_t *p_src )
69 {
70     /* */
71     if( p_blend->p_module &&
72         p_blend->fmt_in.video.i_chroma != p_src->i_chroma )
73     {
74         /* The chroma is not the same, we need to reload the blend module */
75         module_unneed( p_blend, p_blend->p_module );
76         p_blend->p_module = NULL;
77     }
78
79     /* */
80
81     p_blend->fmt_in.i_codec = p_src->i_chroma;
82     p_blend->fmt_in.video   = *p_src;
83
84     /* */
85     p_blend->fmt_out.video.i_width          =
86     p_blend->fmt_out.video.i_visible_width  = i_dst_width;
87     p_blend->fmt_out.video.i_height         =
88     p_blend->fmt_out.video.i_visible_height = i_dst_height;
89
90     /* */
91     if( !p_blend->p_module )
92         p_blend->p_module = module_need( p_blend, "video blending", NULL, false );
93     if( !p_blend->p_module )
94         return VLC_EGENERIC;
95     return VLC_SUCCESS;
96 }
97
98 int filter_Blend( filter_t *p_blend,
99                   picture_t *p_dst, int i_dst_x, int i_dst_y,
100                   const picture_t *p_src, int i_alpha )
101 {
102     if( !p_blend->p_module )
103         return VLC_EGENERIC;
104
105     p_blend->pf_video_blend( p_blend, p_dst, p_src, i_dst_x, i_dst_y, i_alpha );
106     return VLC_SUCCESS;
107 }
108
109 void filter_DeleteBlend( filter_t *p_blend )
110 {
111     if( p_blend->p_module )
112         module_unneed( p_blend, p_blend->p_module );
113
114     vlc_object_detach( p_blend );
115     vlc_object_release( p_blend );
116 }
117
118 /* */
119 #include <vlc_video_splitter.h>
120
121 video_splitter_t *video_splitter_New( vlc_object_t *p_this,
122                                       const char *psz_name,
123                                       const video_format_t *p_fmt )
124 {
125     video_splitter_t *p_splitter = vlc_custom_create( p_this, sizeof(*p_splitter),
126                                            VLC_OBJECT_GENERIC, "video splitter" );
127     if( !p_splitter )
128         return NULL;
129
130     video_format_Copy( &p_splitter->fmt, p_fmt );
131
132     /* */
133     vlc_object_attach( p_splitter, p_this );
134
135     p_splitter->p_module = module_need( p_splitter, "video splitter", psz_name, true );
136     if( ! p_splitter->p_module )
137     {
138         video_splitter_Delete( p_splitter );
139         return NULL;
140     }
141
142     return p_splitter;
143 }
144
145 void video_splitter_Delete( video_splitter_t *p_splitter )
146 {
147     if( p_splitter->p_module )
148         module_unneed( p_splitter, p_splitter->p_module );
149
150     video_format_Clean( &p_splitter->fmt );
151
152     vlc_object_detach( p_splitter );
153     vlc_object_release( p_splitter );
154 }
155