1 /*****************************************************************************
2 * video_output.h : video output thread
3 * This module describes the programming interface for video output threads.
4 * It includes functions allowing to open a new thread, send pictures to a
5 * thread, and destroy a previously opened video output thread.
6 *****************************************************************************
7 * Copyright (C) 1999, 2000 VideoLAN
8 * $Id: video_output.h,v 1.98 2003/08/28 21:11:54 gbazin Exp $
10 * Authors: Vincent Seguin <seguin@via.ecp.fr>
11 * Samuel Hocevar <sam@via.ecp.fr>
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version.
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
26 *****************************************************************************/
28 /*****************************************************************************
29 * vout_chroma_t: Chroma conversion function
30 *****************************************************************************
31 * This is the prototype common to all conversion functions.
33 * p_source source picture
34 * p_dest destination picture
35 * Picture width and source dimensions must be multiples of 16.
36 *****************************************************************************/
37 typedef void (vout_chroma_convert_t)( vout_thread_t *,
38 picture_t *, picture_t * );
40 typedef struct vout_chroma_t
42 /* conversion functions */
43 vout_chroma_convert_t *pf_convert;
45 /* Private module-dependant data */
46 chroma_sys_t * p_sys; /* private data */
48 /* Plugin used and shortcuts to access its capabilities */
54 * \brief video output thread descriptor
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
64 /** \name Thread properties and locks */
66 vlc_mutex_t picture_lock; /**< picture heap lock */
67 vlc_mutex_t subpicture_lock; /**< subpicture heap lock */
68 vlc_mutex_t change_lock; /**< thread change lock */
69 vout_sys_t * p_sys; /**< system output method */
72 /** \name Current display properties */
74 uint16_t i_changes; /**< changes made to the thread */
75 float f_gamma; /**< gamma */
76 vlc_bool_t b_grayscale; /**< color or grayscale display */
77 vlc_bool_t b_info; /**< print additional information */
78 vlc_bool_t b_interface; /**< render interface */
79 vlc_bool_t b_scale; /**< allow picture scaling */
80 vlc_bool_t b_fullscreen; /**< toogle fullscreen display */
81 vlc_bool_t b_override_aspect; /**< aspect ratio overriden */
82 mtime_t render_time; /**< last picture render time */
83 unsigned int i_window_width; /**< video window width */
84 unsigned int i_window_height; /**< video window height */
85 unsigned int i_alignment; /**< video alignment in window */
88 /** \name Plugin used and shortcuts to access its capabilities */
91 int ( *pf_init ) ( vout_thread_t * );
92 void ( *pf_end ) ( vout_thread_t * );
93 int ( *pf_manage ) ( vout_thread_t * );
94 void ( *pf_render ) ( vout_thread_t *, picture_t * );
95 void ( *pf_display ) ( vout_thread_t *, picture_t * );
99 * These numbers are not supposed to be accurate, but are a
100 * good indication of the thread status */
102 count_t c_fps_samples; /**< picture counts */
103 mtime_t p_fps_sample[VOUT_FPS_SAMPLES]; /**< FPS samples dates */
106 /** \name Video heap and translation tables */
108 int i_heap_size; /**< heap size */
109 picture_heap_t render; /**< rendered pictures */
110 picture_heap_t output; /**< direct buffers */
111 vlc_bool_t b_direct; /**< rendered are like direct ? */
112 vout_chroma_t chroma; /**< translation tables */
115 /* Picture and subpicture heaps */
116 picture_t p_picture[2*VOUT_MAX_PICTURES]; /**< pictures */
117 subpicture_t p_subpicture[VOUT_MAX_PICTURES]; /**< subpictures */
121 count_t c_pictures, c_late_pictures;
122 mtime_t display_jitter; /**< average deviation from the PTS */
123 count_t c_jitter_samples; /**< number of samples used
124 for the calculation of the
126 /** delay created by internal caching */
130 char *psz_filter_chain;
131 vlc_bool_t b_filter_change;
133 /* text renderer data */
134 text_renderer_sys_t * p_text_renderer_data; /**< private data for
136 module_t * p_text_renderer_module; /**< text renderer module */
137 /** callback used when a new string needs to be shown on the vout */
138 int ( *pf_add_string ) ( vout_thread_t *, char *, text_style_t *, int,
139 int, int, mtime_t, mtime_t );
142 #define I_OUTPUTPICTURES p_vout->output.i_pictures
143 #define PP_OUTPUTPICTURE p_vout->output.pp_picture
144 #define I_RENDERPICTURES p_vout->render.i_pictures
145 #define PP_RENDERPICTURE p_vout->render.pp_picture
147 /* Flags for changes - these flags are set in the i_changes field when another
148 * thread changed a variable */
149 #define VOUT_INFO_CHANGE 0x0001 /* b_info changed */
150 #define VOUT_GRAYSCALE_CHANGE 0x0002 /* b_grayscale changed */
151 #define VOUT_INTF_CHANGE 0x0004 /* b_interface changed */
152 #define VOUT_SCALE_CHANGE 0x0008 /* b_scale changed */
153 #define VOUT_GAMMA_CHANGE 0x0010 /* gamma changed */
154 #define VOUT_CURSOR_CHANGE 0x0020 /* b_cursor changed */
155 #define VOUT_FULLSCREEN_CHANGE 0x0040 /* b_fullscreen changed */
156 #define VOUT_SIZE_CHANGE 0x0200 /* size changed */
157 #define VOUT_DEPTH_CHANGE 0x0400 /* depth changed */
158 #define VOUT_CHROMA_CHANGE 0x0800 /* change chroma tables */
160 /* Alignment flags */
161 #define VOUT_ALIGN_LEFT 0x0001
162 #define VOUT_ALIGN_RIGHT 0x0002
163 #define VOUT_ALIGN_HMASK 0x0003
164 #define VOUT_ALIGN_TOP 0x0004
165 #define VOUT_ALIGN_BOTTOM 0x0008
166 #define VOUT_ALIGN_VMASK 0x000C
168 #define MAX_JITTER_SAMPLES 20
170 /*****************************************************************************
172 *****************************************************************************/
173 #define vout_Request(a,b,c,d,e,f) __vout_Request(VLC_OBJECT(a),b,c,d,e,f)
174 VLC_EXPORT( vout_thread_t *, __vout_Request, ( vlc_object_t *, vout_thread_t *, unsigned int, unsigned int, uint32_t, unsigned int ) );
175 #define vout_Create(a,b,c,d,e) __vout_Create(VLC_OBJECT(a),b,c,d,e)
176 VLC_EXPORT( vout_thread_t *, __vout_Create, ( vlc_object_t *, unsigned int, unsigned int, uint32_t, unsigned int ) );
177 VLC_EXPORT( void, vout_Destroy, ( vout_thread_t * ) );
178 VLC_EXPORT( int, vout_VarCallback, ( vlc_object_t *, const char *, vlc_value_t, vlc_value_t, void * ) );
180 VLC_EXPORT( int, vout_ChromaCmp, ( uint32_t, uint32_t ) );
182 VLC_EXPORT( picture_t *, vout_CreatePicture, ( vout_thread_t *, vlc_bool_t, vlc_bool_t, unsigned int ) );
183 VLC_EXPORT( void, vout_InitPicture, ( vlc_object_t *, picture_t *, int, int, uint32_t ) );
184 VLC_EXPORT( void, vout_AllocatePicture,( vout_thread_t *, picture_t *, int, int, uint32_t ) );
185 VLC_EXPORT( void, vout_DestroyPicture, ( vout_thread_t *, picture_t * ) );
186 VLC_EXPORT( void, vout_DisplayPicture, ( vout_thread_t *, picture_t * ) );
187 VLC_EXPORT( void, vout_DatePicture, ( vout_thread_t *, picture_t *, mtime_t ) );
188 VLC_EXPORT( void, vout_LinkPicture, ( vout_thread_t *, picture_t * ) );
189 VLC_EXPORT( void, vout_UnlinkPicture, ( vout_thread_t *, picture_t * ) );
190 VLC_EXPORT( void, vout_PlacePicture, ( vout_thread_t *, unsigned int, unsigned int, unsigned int *, unsigned int *, unsigned int *, unsigned int * ) );
191 picture_t * vout_RenderPicture ( vout_thread_t *, picture_t *,
194 VLC_EXPORT( subpicture_t *, vout_CreateSubPicture, ( vout_thread_t *, int ) );
195 VLC_EXPORT( void, vout_DestroySubPicture, ( vout_thread_t *, subpicture_t * ) );
196 VLC_EXPORT( void, vout_DisplaySubPicture, ( vout_thread_t *, subpicture_t * ) );
198 subpicture_t * vout_SortSubPictures ( vout_thread_t *, mtime_t );
199 void vout_RenderSubPictures ( vout_thread_t *, picture_t *,