1 /*****************************************************************************
2 * video.h: common video definitions
3 * This header is required by all modules which have to handle pictures. It
4 * includes all common video types and constants.
5 *****************************************************************************
6 * Copyright (C) 1999, 2000 VideoLAN
7 * $Id: video.h,v 1.37 2001/12/31 04:53:33 sam Exp $
9 * Authors: Vincent Seguin <seguin@via.ecp.fr>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
24 *****************************************************************************/
26 /*****************************************************************************
27 * plane_t: description of a planar graphic field
28 *****************************************************************************/
29 typedef u8 pixel_data_t;
31 typedef struct plane_s
33 pixel_data_t *p_data; /* Start of the plane's data */
35 /* Variables used for fast memcpy operations */
36 int i_bytes; /* Total number of bytes in the plane */
37 int i_line_bytes; /* Total number of bytes in a line */
39 /* Variables used for RGB planes */
46 /*****************************************************************************
47 * picture_t: video picture
48 *****************************************************************************
49 * Any picture destined to be displayed by a video output thread should be
50 * stored in this structure from it's creation to it's effective display.
51 * Picture type and flags should only be modified by the output thread. Note
52 * that an empty picture MUST have its flags set to 0.
53 *****************************************************************************/
54 typedef struct picture_s
56 /* Picture data - data can always be freely modified, but no pointer
57 * may EVER be modified. A direct buffer can be handled as the plugin
58 * wishes, but for internal video output pictures the allocated pointer
59 * MUST be planes[0].p_data */
60 plane_t planes[ VOUT_MAX_PLANES ]; /* description of the planes */
61 int i_planes; /* number of allocated planes */
63 /* Type and flags - should NOT be modified except by the vout thread */
64 int i_status; /* picture flags */
65 int i_type; /* is picture a direct buffer ? */
66 int i_matrix_coefficients; /* in YUV type, encoding type */
68 /* Picture management properties - these properties can be modified using
69 * the video output thread API, but should never be written directly */
70 int i_refcount; /* link reference counter */
71 mtime_t date; /* display date */
73 /* Picture margins - needed because of possible padding issues */
79 /* Picture dynamic properties - those properties can be changed by the
81 boolean_t b_progressive; /* is it a progressive frame ? */
82 boolean_t b_repeat_first_field; /* RFF bit */
83 boolean_t b_top_field_first; /* which field is first */
85 /* Macroblock counter - the decoder uses it to verify if it has
86 * decoded all the macroblocks of the picture */
88 vlc_mutex_t lock_deccount;
90 /* Private data - the video output plugin might want to put stuff here to
91 * keep track of the picture */
92 struct picture_sys_s *p_sys;
96 /*****************************************************************************
97 * picture_heap_t: video picture heap, either render (to store pictures used
98 * by the decoder) or output (to store pictures displayed by the vout plugin)
99 *****************************************************************************/
100 typedef struct picture_heap_s
102 int i_pictures; /* current heap size */
104 /* Picture static properties - those properties are fixed at initialization
105 * and should NOT be modified */
106 int i_width; /* picture width */
107 int i_height; /* picture height */
108 int i_chroma; /* picture chroma */
109 int i_aspect; /* aspect ratio */
112 picture_t* pp_picture[VOUT_MAX_PICTURES]; /* pictures */
117 #define EMPTY_PICTURE 0 /* empty buffer */
118 #define MEMORY_PICTURE 100 /* heap-allocated buffer */
119 #define DIRECT_PICTURE 200 /* direct buffer */
122 #define FREE_PICTURE 0 /* free and not allocated */
123 #define RESERVED_PICTURE 1 /* allocated and reserved */
124 #define RESERVED_DATED_PICTURE 2 /* waiting for DisplayPicture */
125 #define RESERVED_DISP_PICTURE 3 /* waiting for a DatePicture */
126 #define READY_PICTURE 4 /* ready for display */
127 #define DISPLAYED_PICTURE 5 /* been displayed but is linked */
128 #define DESTROYED_PICTURE 6 /* allocated but no more used */
131 #define EMPTY_PICTURE 0 /* picture slot is empty and available */
132 #define YUV_420_PICTURE 100 /* 4:2:0 YUV picture */
133 #define YUV_422_PICTURE 101 /* 4:2:2 YUV picture */
134 #define YUV_444_PICTURE 102 /* 4:4:4 YUV picture */
135 #define RGB_8BPP_PICTURE 200 /* RGB 8bpp picture */
136 #define RGB_16BPP_PICTURE 201 /* RGB 16bpp picture */
137 #define RGB_32BPP_PICTURE 202 /* RGB 32bpp picture */
139 /* Aspect ratio (ISO/IEC 13818-2 section 6.3.3, table 6-3) */
140 #define AR_SQUARE_PICTURE 1 /* square pixels */
141 #define AR_3_4_PICTURE 2 /* 3:4 picture (TV) */
142 #define AR_16_9_PICTURE 3 /* 16:9 picture (wide screen) */
143 #define AR_221_1_PICTURE 4 /* 2.21:1 picture (movie) */
158 #define P_Y planes[ Y_PLANE ].p_data
159 #define P_U planes[ U_PLANE ].p_data
160 #define P_V planes[ V_PLANE ].p_data
162 /*****************************************************************************
163 * subpicture_t: video subtitle
164 *****************************************************************************
165 * Any subtitle destined to be displayed by a video output thread should
166 * be stored in this structure from it's creation to it's effective display.
167 * Subtitle type and flags should only be modified by the output thread. Note
168 * that an empty subtitle MUST have its flags set to 0.
169 *****************************************************************************/
170 typedef struct subpicture_s
172 /* Type and flags - should NOT be modified except by the vout thread */
173 int i_type; /* type */
174 int i_status; /* flags */
175 int i_size; /* data size */
176 struct subpicture_s * p_next; /* next subtitle to be displayed */
178 /* Date properties */
179 mtime_t i_start; /* beginning of display date */
180 mtime_t i_stop; /* end of display date */
181 boolean_t b_ephemer; /* does the subtitle have a TTL ? */
183 /* Display properties - these properties are only indicative and may be
184 * changed by the video output thread, or simply ignored depending of the
186 int i_x; /* offset from alignment position */
187 int i_y; /* offset from alignment position */
188 int i_width; /* picture width */
189 int i_height; /* picture height */
190 int i_horizontal_align; /* horizontal alignment */
191 int i_vertical_align; /* vertical alignment */
193 /* Additionnal properties depending of the subpicture type */
196 /* Text subpictures properties - text is stored in data area, in ASCIIZ
200 p_vout_font_t p_font; /* font, NULL for default */
201 int i_style; /* text style */
202 u32 i_char_color; /* character color */
203 u32 i_border_color; /* border color */
204 u32 i_bg_color; /* background color */
206 /* DVD subpicture units properties */
209 int i_offset[2]; /* byte offsets to data */
213 /* Subpicture data, format depends of type - data can always be freely
214 * modified. p_data itself (the pointer) should NEVER be modified. */
215 void * p_data; /* subpicture data */
218 /* Subpicture type */
219 #define EMPTY_SUBPICTURE 0 /* subtitle slot is empty and available */
220 #define DVD_SUBPICTURE 100 /* DVD subpicture unit */
221 #define TEXT_SUBPICTURE 200 /* single line text */
223 /* Subpicture status */
224 #define FREE_SUBPICTURE 0 /* free and not allocated */
225 #define RESERVED_SUBPICTURE 1 /* allocated and reserved */
226 #define READY_SUBPICTURE 2 /* ready for display */
227 #define DESTROYED_SUBPICTURE 3 /* allocated but not used anymore */
229 /* Alignment types */
230 #define RIGHT_ALIGN 10 /* x is absolute for right */
231 #define LEFT_ALIGN 11 /* x is absolute for left */
232 #define RIGHT_RALIGN 12 /* x is relative for right from right */
233 #define LEFT_RALIGN 13 /* x is relative for left from left */
235 #define CENTER_ALIGN 20 /* x, y are absolute for center */
236 #define CENTER_RALIGN 21 /* x,y are relative for center from center */
238 #define BOTTOM_ALIGN 30 /* y is absolute for bottom */
239 #define TOP_ALIGN 31 /* y is absolute for top */
240 #define BOTTOM_RALIGN 32 /* y is relative for bottom from bottom */
241 #define TOP_RALIGN 33 /* y is relative for top from top */
242 #define SUBTITLE_RALIGN 34 /* y is relative for center from subtitle */