video_output.h 9.4 KB
Newer Older
1
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
2
3
4
 * video_output.h : video output thread
 * This module describes the programming interface for video output threads.
 * It includes functions allowing to open a new thread, send pictures to a
Sam Hocevar's avatar
   
Sam Hocevar committed
5
 * thread, and destroy a previously opened video output thread.
6
7
 *****************************************************************************
 * Copyright (C) 1999, 2000 VideoLAN
gbazin's avatar
   
gbazin committed
8
 * $Id: video_output.h,v 1.93 2003/03/24 23:50:46 gbazin Exp $
9
 *
10
 * Authors: Vincent Seguin <seguin@via.ecp.fr>
11
 *          Samuel Hocevar <sam@via.ecp.fr>
12
13
14
15
16
 *
 * 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.
17
 * 
18
19
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20
21
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
22
 *
23
24
25
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
26
 *****************************************************************************/
Michel Kaempf's avatar
Michel Kaempf committed
27

28
/*****************************************************************************
Sam Hocevar's avatar
   
Sam Hocevar committed
29
 * vout_chroma_t: Chroma conversion function
30
 *****************************************************************************
Sam Hocevar's avatar
   
Sam Hocevar committed
31
 * This is the prototype common to all conversion functions.
32
 * Parameters:
Sam Hocevar's avatar
   
Sam Hocevar committed
33
34
 *      p_source                        source picture
 *      p_dest                          destination picture
Vincent Seguin's avatar
Vincent Seguin committed
35
 * Picture width and source dimensions must be multiples of 16.
36
 *****************************************************************************/
37
typedef void (vout_chroma_convert_t)( vout_thread_t *,
Sam Hocevar's avatar
   
Sam Hocevar committed
38
                                      picture_t *, picture_t * );
39

40
typedef struct vout_chroma_t
41
{
Sam Hocevar's avatar
Sam Hocevar committed
42
    /* conversion functions */
Sam Hocevar's avatar
   
Sam Hocevar committed
43
44
45
    vout_chroma_convert_t *pf_convert;

    /* Private module-dependant data */
46
    chroma_sys_t *      p_sys;                               /* private data */
47
48

    /* Plugin used and shortcuts to access its capabilities */
49
    module_t * p_module;
Sam Hocevar's avatar
   
Sam Hocevar committed
50
51

} vout_chroma_t;
52

53
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
54
 * vout_thread_t: video output thread descriptor
55
 *****************************************************************************
56
 * Any independant video output device, such as an X11 window or a GGI device,
57
 * is represented by a video output thread, and described using the following
58
 * structure.
59
 *****************************************************************************/
60
struct vout_thread_t
Michel Kaempf's avatar
Michel Kaempf committed
61
{
62
63
    VLC_COMMON_MEMBERS

64
    /* Thread properties and lock */
65
66
67
    vlc_mutex_t         picture_lock;                   /* picture heap lock */
    vlc_mutex_t         subpicture_lock;             /* subpicture heap lock */
    vlc_mutex_t         change_lock;                   /* thread change lock */
68
    vout_sys_t *        p_sys;                       /* system output method */
gbazin's avatar
   
gbazin committed
69

70
    /* Current display properties */
71
    uint16_t            i_changes;             /* changes made to the thread */
72
    float               f_gamma;                                    /* gamma */
73
74
75
76
77
    vlc_bool_t          b_grayscale;           /* color or grayscale display */
    vlc_bool_t          b_info;              /* print additional information */
    vlc_bool_t          b_interface;                     /* render interface */
    vlc_bool_t          b_scale;                    /* allow picture scaling */
    vlc_bool_t          b_fullscreen;           /* toogle fullscreen display */
78
    vlc_bool_t          b_override_aspect;         /* aspect ratio overriden */
Sam Hocevar's avatar
   
Sam Hocevar committed
79
    mtime_t             render_time;             /* last picture render time */
Sam Hocevar's avatar
Sam Hocevar committed
80
81
    unsigned int        i_window_width;                /* video window width */
    unsigned int        i_window_height;              /* video window height */
Vincent Seguin's avatar
Vincent Seguin committed
82

Sam Hocevar's avatar
   
Sam Hocevar committed
83
    /* Plugin used and shortcuts to access its capabilities */
84
85
86
87
88
89
    module_t *   p_module;
    int       ( *pf_init )       ( vout_thread_t * );
    void      ( *pf_end )        ( vout_thread_t * );
    int       ( *pf_manage )     ( vout_thread_t * );
    void      ( *pf_render )     ( vout_thread_t *, picture_t * );
    void      ( *pf_display )    ( vout_thread_t *, picture_t * );
90

91
92
    /* Statistics - these numbers are not supposed to be accurate, but are a
     * good indication of the thread status */
93
    count_t             c_fps_samples;                     /* picture counts */
94
    mtime_t             p_fps_sample[VOUT_FPS_SAMPLES]; /* FPS samples dates */
95

Sam Hocevar's avatar
Sam Hocevar committed
96
    /* Video heap and translation tables */
Sam Hocevar's avatar
   
Sam Hocevar committed
97
98
99
    int                 i_heap_size;                            /* heap size */
    picture_heap_t      render;                         /* rendered pictures */
    picture_heap_t      output;                            /* direct buffers */
100
    vlc_bool_t          b_direct;              /* rendered are like direct ? */
Sam Hocevar's avatar
   
Sam Hocevar committed
101
102
103
    vout_chroma_t       chroma;                        /* translation tables */

    /* Picture and subpicture heaps */
Sam Hocevar's avatar
   
Sam Hocevar committed
104
    picture_t           p_picture[2*VOUT_MAX_PICTURES];          /* pictures */
105
    subpicture_t        p_subpicture[VOUT_MAX_PICTURES];      /* subpictures */
Vincent Seguin's avatar
Vincent Seguin committed
106
107

    /* Bitmap fonts */
108
109
    vout_font_t *       p_default_font;                      /* default font */
    vout_font_t *       p_large_font;                          /* large font */
Christophe Massiot's avatar
Christophe Massiot committed
110

111
    /* Statistics */
Christophe Massiot's avatar
Christophe Massiot committed
112
    count_t             c_loops;
113
114
115
116
    count_t             c_pictures, c_late_pictures;
    mtime_t             display_jitter;    /* average deviation from the PTS */
    count_t             c_jitter_samples;  /* number of samples used for the *
                                            * calculation of the jitter      */
gbazin's avatar
   
gbazin committed
117
118
    /* delay created by internal caching */
    int                 i_pts_delay;
119

gbazin's avatar
   
gbazin committed
120
121
    /* Filter chain */
    char *psz_filter_chain;
gbazin's avatar
   
gbazin committed
122
    vlc_bool_t b_filter_change;
123
};
Michel Kaempf's avatar
Michel Kaempf committed
124

Sam Hocevar's avatar
   
Sam Hocevar committed
125
126
127
128
129
#define I_OUTPUTPICTURES p_vout->output.i_pictures
#define PP_OUTPUTPICTURE p_vout->output.pp_picture
#define I_RENDERPICTURES p_vout->render.i_pictures
#define PP_RENDERPICTURE p_vout->render.pp_picture

Vincent Seguin's avatar
Vincent Seguin committed
130
131
/* Flags for changes - these flags are set in the i_changes field when another
 * thread changed a variable */
132
133
134
135
#define VOUT_INFO_CHANGE        0x0001                     /* b_info changed */
#define VOUT_GRAYSCALE_CHANGE   0x0002                /* b_grayscale changed */
#define VOUT_INTF_CHANGE        0x0004                /* b_interface changed */
#define VOUT_SCALE_CHANGE       0x0008                    /* b_scale changed */
136
137
138
#define VOUT_GAMMA_CHANGE       0x0010                      /* gamma changed */
#define VOUT_CURSOR_CHANGE      0x0020                   /* b_cursor changed */
#define VOUT_FULLSCREEN_CHANGE  0x0040               /* b_fullscreen changed */
139
140
#define VOUT_SIZE_CHANGE        0x0200                       /* size changed */
#define VOUT_DEPTH_CHANGE       0x0400                      /* depth changed */
Sam Hocevar's avatar
   
Sam Hocevar committed
141
#define VOUT_CHROMA_CHANGE      0x0800               /* change chroma tables */
142

143
144
#define MAX_JITTER_SAMPLES      20

145
/*****************************************************************************
Michel Kaempf's avatar
Michel Kaempf committed
146
 * Prototypes
147
 *****************************************************************************/
148
149
150
151
152
#define vout_Request(a,b,c,d,e,f) __vout_Request(VLC_OBJECT(a),b,c,d,e,f)
VLC_EXPORT( vout_thread_t *, __vout_Request,      ( vlc_object_t *, vout_thread_t *, unsigned int, unsigned int, uint32_t, unsigned int ) );
#define vout_Create(a,b,c,d,e) __vout_Create(VLC_OBJECT(a),b,c,d,e)
VLC_EXPORT( vout_thread_t *, __vout_Create,       ( vlc_object_t *, unsigned int, unsigned int, uint32_t, unsigned int ) );
VLC_EXPORT( void,            vout_Destroy,        ( vout_thread_t * ) );
153
VLC_EXPORT( int, vout_VarCallback, ( vlc_object_t *, const char *, vlc_value_t, vlc_value_t, void * ) );
Sam Hocevar's avatar
   
Sam Hocevar committed
154

155
VLC_EXPORT( int,             vout_ChromaCmp,      ( uint32_t, uint32_t ) );
156

157
VLC_EXPORT( picture_t *,     vout_CreatePicture,  ( vout_thread_t *, vlc_bool_t, vlc_bool_t, vlc_bool_t ) );
158
VLC_EXPORT( void,            vout_AllocatePicture,( vout_thread_t *, picture_t *, int, int, uint32_t ) );
159
160
161
162
163
VLC_EXPORT( void,            vout_DestroyPicture, ( vout_thread_t *, picture_t * ) );
VLC_EXPORT( void,            vout_DisplayPicture, ( vout_thread_t *, picture_t * ) );
VLC_EXPORT( void,            vout_DatePicture,    ( vout_thread_t *, picture_t *, mtime_t ) );
VLC_EXPORT( void,            vout_LinkPicture,    ( vout_thread_t *, picture_t * ) );
VLC_EXPORT( void,            vout_UnlinkPicture,  ( vout_thread_t *, picture_t * ) );
164
VLC_EXPORT( void,            vout_PlacePicture,   ( vout_thread_t *, unsigned int, unsigned int, unsigned int *, unsigned int *, unsigned int *, unsigned int * ) );
Sam Hocevar's avatar
   
Sam Hocevar committed
165
166
167
picture_t *     vout_RenderPicture  ( vout_thread_t *, picture_t *,
                                                       subpicture_t * );

168
VLC_EXPORT( subpicture_t *,  vout_CreateSubPicture,   ( vout_thread_t *, int ) );
169
170
171
VLC_EXPORT( void,            vout_DestroySubPicture,  ( vout_thread_t *, subpicture_t * ) );
VLC_EXPORT( void,            vout_DisplaySubPicture,  ( vout_thread_t *, subpicture_t * ) );

Sam Hocevar's avatar
   
Sam Hocevar committed
172
subpicture_t *  vout_SortSubPictures    ( vout_thread_t *, mtime_t );
Sam Hocevar's avatar
   
Sam Hocevar committed
173
174
void            vout_RenderSubPictures  ( vout_thread_t *, picture_t *,
                                                           subpicture_t * );