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 oppenned video output thread.
6 *****************************************************************************
7 * Copyright (C) 1999, 2000 VideoLAN
8 * $Id: video_output.h,v 1.65 2001/12/13 12:47:17 sam Exp $
10 * Authors: Vincent Seguin <seguin@via.ecp.fr>
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
25 *****************************************************************************/
27 /*****************************************************************************
28 * vout_bank_t, p_vout_bank (global variable)
29 *****************************************************************************
30 * This global variable is accessed by any function using the video output.
31 *****************************************************************************/
32 typedef struct vout_bank_s
34 /* Array to all the video outputs */
35 struct vout_thread_s *pp_vout[ VOUT_MAX_THREADS ];
38 vlc_mutex_t lock; /* Global lock */
42 extern vout_bank_t *p_vout_bank;
44 /*****************************************************************************
45 * vout_chroma_t: Chroma conversion function
46 *****************************************************************************
47 * This is the prototype common to all conversion functions.
49 * p_source source picture
50 * p_dest destination picture
51 * Picture width and source dimensions must be multiples of 16.
52 *****************************************************************************/
53 typedef void (vout_chroma_convert_t)( picture_t *p_source, picture_t *p_dest );
55 typedef struct vout_chroma_s
57 /* conversion functions */
58 vout_chroma_convert_t *pf_convert;
60 /* Private module-dependant data */
61 p_chroma_sys_t p_sys; /* private data */
63 /* Plugin used and shortcuts to access its capabilities */
64 struct module_s * p_module;
65 int ( * pf_init ) ( struct vout_thread_s * );
66 int ( * pf_reset ) ( struct vout_thread_s * );
67 void ( * pf_end ) ( struct vout_thread_s * );
71 /*****************************************************************************
73 *****************************************************************************/
74 typedef struct vout_fifo_s
76 /* See the fifo types below */
79 int i_fifo; /* Just to keep track of the fifo index */
81 vlc_mutex_t data_lock;
86 #define VOUT_EMPTY_FIFO 0
87 #define VOUT_YUV_FIFO 1
88 #define VOUT_SPU_FIFO 2
90 /*****************************************************************************
91 * vout_thread_t: video output thread descriptor
92 *****************************************************************************
93 * Any independant video output device, such as an X11 window or a GGI device,
94 * is represented by a video output thread, and described using the following
96 *****************************************************************************/
97 typedef struct vout_thread_s
99 /* Thread properties and lock */
100 boolean_t b_die; /* `die' flag */
101 boolean_t b_error; /* `error' flag */
102 boolean_t b_active; /* `active' flag */
103 vlc_thread_t thread_id; /* id for pthread functions */
104 vlc_mutex_t picture_lock; /* picture heap lock */
105 vlc_mutex_t subpicture_lock; /* subpicture heap lock */
106 vlc_mutex_t change_lock; /* thread change lock */
107 int * pi_status; /* temporary status flag */
108 p_vout_sys_t p_sys; /* system output method */
110 /* Current display properties */
111 u16 i_changes; /* changes made to the thread */
112 float f_gamma; /* gamma */
113 boolean_t b_grayscale; /* color or grayscale display */
114 boolean_t b_info; /* print additional information */
115 boolean_t b_interface; /* render interface */
116 boolean_t b_scale; /* allow picture scaling */
117 boolean_t b_fullscreen; /* toogle fullscreen display */
118 mtime_t render_time; /* last picture render time */
120 /* Plugin used and shortcuts to access its capabilities */
121 struct module_s * p_module;
122 int ( *pf_create ) ( struct vout_thread_s * );
123 int ( *pf_init ) ( struct vout_thread_s * );
124 void ( *pf_end ) ( struct vout_thread_s * );
125 void ( *pf_destroy ) ( struct vout_thread_s * );
126 int ( *pf_manage ) ( struct vout_thread_s * );
127 void ( *pf_display ) ( struct vout_thread_s *,
128 struct picture_s * );
129 void ( *pf_setpalette ) ( struct vout_thread_s *,
130 u16 *, u16 *, u16 * );
132 /* Statistics - these numbers are not supposed to be accurate, but are a
133 * good indication of the thread status */
134 count_t c_fps_samples; /* picture counts */
135 mtime_t p_fps_sample[VOUT_FPS_SAMPLES]; /* FPS samples dates */
137 /* Video heap and translation tables */
138 int i_heap_size; /* heap size */
139 picture_heap_t render; /* rendered pictures */
140 picture_heap_t output; /* direct buffers */
141 boolean_t b_direct; /* rendered are like direct ? */
142 vout_chroma_t chroma; /* translation tables */
144 /* Picture and subpicture heaps */
145 picture_t p_picture[VOUT_MAX_PICTURES]; /* pictures */
146 subpicture_t p_subpicture[VOUT_MAX_PICTURES]; /* subpictures */
149 p_vout_font_t p_default_font; /* default font */
150 p_vout_font_t p_large_font; /* large font */
154 count_t c_pictures, c_late_pictures;
155 mtime_t display_jitter; /* average deviation from the PTS */
156 count_t c_jitter_samples; /* number of samples used for the *
157 * calculation of the jitter */
160 #define I_OUTPUTPICTURES p_vout->output.i_pictures
161 #define PP_OUTPUTPICTURE p_vout->output.pp_picture
162 #define I_RENDERPICTURES p_vout->render.i_pictures
163 #define PP_RENDERPICTURE p_vout->render.pp_picture
165 /* Flags for changes - these flags are set in the i_changes field when another
166 * thread changed a variable */
167 #define VOUT_INFO_CHANGE 0x0001 /* b_info changed */
168 #define VOUT_GRAYSCALE_CHANGE 0x0002 /* b_grayscale changed */
169 #define VOUT_INTF_CHANGE 0x0004 /* b_interface changed */
170 #define VOUT_SCALE_CHANGE 0x0008 /* b_scale changed */
171 #define VOUT_GAMMA_CHANGE 0x0010 /* gamma changed */
172 #define VOUT_CURSOR_CHANGE 0x0020 /* b_cursor changed */
173 #define VOUT_FULLSCREEN_CHANGE 0x0040 /* b_fullscreen changed */
174 #define VOUT_SIZE_CHANGE 0x0200 /* size changed */
175 #define VOUT_DEPTH_CHANGE 0x0400 /* depth changed */
176 #define VOUT_CHROMA_CHANGE 0x0800 /* change chroma tables */
178 /* Disabled for thread deadlocks issues --Meuuh */
179 //#define VOUT_NODISPLAY_CHANGE 0xff00 /* changes which forbidden display */
181 #define MAX_JITTER_SAMPLES 20
183 /*****************************************************************************
185 *****************************************************************************/
186 void vout_InitBank ( void );
187 void vout_EndBank ( void );
189 vout_thread_t * vout_CreateThread ( int *pi_status, int, int, int, int );
190 void vout_DestroyThread ( vout_thread_t *, int *pi_status );
192 vout_fifo_t * vout_CreateFifo ( void );
193 void vout_DestroyFifo ( vout_fifo_t * );
194 void vout_FreeFifo ( vout_fifo_t * );
196 picture_t * vout_CreatePicture ( vout_thread_t * );
197 void vout_DestroyPicture ( vout_thread_t *, picture_t * );
198 void vout_DisplayPicture ( vout_thread_t *, picture_t * );
199 void vout_DatePicture ( vout_thread_t *, picture_t *, mtime_t );
200 void vout_LinkPicture ( vout_thread_t *, picture_t * );
201 void vout_UnlinkPicture ( vout_thread_t *, picture_t * );
202 picture_t * vout_RenderPicture ( vout_thread_t *, picture_t *,
204 void vout_PlacePicture ( vout_thread_t *, int, int,
205 int *, int *, int *, int * );
207 subpicture_t * vout_CreateSubPicture ( vout_thread_t *, int, int );
208 void vout_DestroySubPicture ( vout_thread_t *, subpicture_t * );
209 void vout_DisplaySubPicture ( vout_thread_t *, subpicture_t * );
210 subpicture_t * vout_SortSubPictures ( vout_thread_t *, mtime_t );
211 void vout_RenderSubPictures ( vout_thread_t *, picture_t *,