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 1.38 2002/01/02 14:37:42 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 u64 i_chroma; /* picture chroma */
109 int i_aspect; /* aspect ratio */
112 picture_t* pp_picture[VOUT_MAX_PICTURES]; /* pictures */
116 /*****************************************************************************
117 * Flags used to describe the status of a picture
118 *****************************************************************************/
121 #define EMPTY_PICTURE 0 /* empty buffer */
122 #define MEMORY_PICTURE 100 /* heap-allocated buffer */
123 #define DIRECT_PICTURE 200 /* direct buffer */
126 #define FREE_PICTURE 0 /* free and not allocated */
127 #define RESERVED_PICTURE 1 /* allocated and reserved */
128 #define RESERVED_DATED_PICTURE 2 /* waiting for DisplayPicture */
129 #define RESERVED_DISP_PICTURE 3 /* waiting for a DatePicture */
130 #define READY_PICTURE 4 /* ready for display */
131 #define DISPLAYED_PICTURE 5 /* been displayed but is linked */
132 #define DESTROYED_PICTURE 6 /* allocated but no more used */
134 /*****************************************************************************
135 * Flags used to describe the format of a picture
136 *****************************************************************************/
138 #define ONLY_FOURCC(i_chroma) ((i_chroma)&0x00000000ffffffff)
139 #define ONLY_EXTRA(i_chroma) ((i_chroma)&0xffffffff00000000)
141 /* Picture chroma - see http://www.webartz.com/fourcc/ */
142 #define FOURCC_BI_RGB 0x00000000 /* Planar RGB, for 8bpp */
143 #define FOURCC_RGB 0x32424752 /* alias for BI_RGB */
144 #define FOURCC_BI_BITFIELDS 0x00000003 /* Planar RGB, for 16, 24, 32bpp */
145 #define FOURCC_I420 0x30323449 /* Planar 4:2:0, Y:U:V */
146 #define FOURCC_IYUV 0x56555949 /* alias for I420 */
147 #define FOURCC_YV12 0x32315659 /* Planar 4:2:0, Y:V:U */
149 /* Custom formats which we use but which don't exist in the fourcc database */
150 #define FOURCC_I422 0x32323449
151 #define FOURCC_I444 0x34343449
153 /* Picture format - gives more precise information than the chroma */
154 #define DEPTH_8BPP ((u64)0x00000008<<32)
155 #define DEPTH_15BPP ((u64)0x00000015<<32)
156 #define DEPTH_16BPP ((u64)0x00000016<<32)
157 #define DEPTH_24BPP ((u64)0x00000024<<32)
158 #define DEPTH_32BPP ((u64)0x00000032<<32)
172 #define P_MAIN planes[ MAIN_PLANE ].p_data
173 #define P_Y planes[ Y_PLANE ].p_data
174 #define P_U planes[ U_PLANE ].p_data
175 #define P_V planes[ V_PLANE ].p_data
177 /*****************************************************************************
178 * subpicture_t: video subtitle
179 *****************************************************************************
180 * Any subtitle destined to be displayed by a video output thread should
181 * be stored in this structure from it's creation to it's effective display.
182 * Subtitle type and flags should only be modified by the output thread. Note
183 * that an empty subtitle MUST have its flags set to 0.
184 *****************************************************************************/
185 typedef struct subpicture_s
187 /* Type and flags - should NOT be modified except by the vout thread */
188 int i_type; /* type */
189 int i_status; /* flags */
190 int i_size; /* data size */
191 struct subpicture_s * p_next; /* next subtitle to be displayed */
193 /* Date properties */
194 mtime_t i_start; /* beginning of display date */
195 mtime_t i_stop; /* end of display date */
196 boolean_t b_ephemer; /* does the subtitle have a TTL ? */
198 /* Display properties - these properties are only indicative and may be
199 * changed by the video output thread, or simply ignored depending of the
201 int i_x; /* offset from alignment position */
202 int i_y; /* offset from alignment position */
203 int i_width; /* picture width */
204 int i_height; /* picture height */
205 int i_horizontal_align; /* horizontal alignment */
206 int i_vertical_align; /* vertical alignment */
208 /* Additionnal properties depending of the subpicture type */
211 /* Text subpictures properties - text is stored in data area, in ASCIIZ
215 p_vout_font_t p_font; /* font, NULL for default */
216 int i_style; /* text style */
217 u32 i_char_color; /* character color */
218 u32 i_border_color; /* border color */
219 u32 i_bg_color; /* background color */
221 /* DVD subpicture units properties */
224 int i_offset[2]; /* byte offsets to data */
228 /* Subpicture data, format depends of type - data can always be freely
229 * modified. p_data itself (the pointer) should NEVER be modified. */
230 void * p_data; /* subpicture data */
233 /* Subpicture type */
234 #define EMPTY_SUBPICTURE 0 /* subtitle slot is empty and available */
235 #define DVD_SUBPICTURE 100 /* DVD subpicture unit */
236 #define TEXT_SUBPICTURE 200 /* single line text */
238 /* Subpicture status */
239 #define FREE_SUBPICTURE 0 /* free and not allocated */
240 #define RESERVED_SUBPICTURE 1 /* allocated and reserved */
241 #define READY_SUBPICTURE 2 /* ready for display */
242 #define DESTROYED_SUBPICTURE 3 /* allocated but not used anymore */
244 /* Alignment types */
245 #define RIGHT_ALIGN 10 /* x is absolute for right */
246 #define LEFT_ALIGN 11 /* x is absolute for left */
247 #define RIGHT_RALIGN 12 /* x is relative for right from right */
248 #define LEFT_RALIGN 13 /* x is relative for left from left */
250 #define CENTER_ALIGN 20 /* x, y are absolute for center */
251 #define CENTER_RALIGN 21 /* x,y are relative for center from center */
253 #define BOTTOM_ALIGN 30 /* y is absolute for bottom */
254 #define TOP_ALIGN 31 /* y is absolute for top */
255 #define BOTTOM_RALIGN 32 /* y is relative for bottom from bottom */
256 #define TOP_RALIGN 33 /* y is relative for top from top */
257 #define SUBTITLE_RALIGN 34 /* y is relative for center from subtitle */