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 1.39 2002/01/04 14:01:34 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 struct plane_s
31 u8 *p_pixels; /* Start of the plane's data */
33 /* Variables used for fast memcpy operations */
34 int i_lines; /* Number of lines */
35 int i_pitch; /* Number of bytes in a line, including margins */
37 /* Size of a macropixel, defaults to 1 */
40 /* Is there a margin ? defaults to no */
43 /* Variables used for pictures with margins */
44 int i_visible_bytes; /* How many real pixels are there ? */
45 boolean_t b_hidden; /* Are we allowed to write to the margin ? */
47 /* Variables used for RGB planes */
54 /*****************************************************************************
55 * picture_t: video picture
56 *****************************************************************************
57 * Any picture destined to be displayed by a video output thread should be
58 * stored in this structure from it's creation to it's effective display.
59 * Picture type and flags should only be modified by the output thread. Note
60 * that an empty picture MUST have its flags set to 0.
61 *****************************************************************************/
62 typedef struct picture_s
64 /* Picture data - data can always be freely modified, but p_data may
65 * NEVER be modified. A direct buffer can be handled as the plugin
66 * wishes, it can even swap p_pixels buffers. */
68 plane_t p[ VOUT_MAX_PLANES ]; /* description of the planes */
69 int i_planes; /* number of allocated planes */
71 /* Type and flags - should NOT be modified except by the vout thread */
72 int i_status; /* picture flags */
73 int i_type; /* is picture a direct buffer ? */
74 int i_matrix_coefficients; /* in YUV type, encoding type */
76 /* Picture management properties - these properties can be modified using
77 * the video output thread API, but should never be written directly */
78 int i_refcount; /* link reference counter */
79 mtime_t date; /* display date */
81 /* Picture dynamic properties - those properties can be changed by the
83 boolean_t b_progressive; /* is it a progressive frame ? */
84 boolean_t b_repeat_first_field; /* RFF bit */
85 boolean_t b_top_field_first; /* which field is first */
87 /* Macroblock counter - the decoder uses it to verify if it has
88 * decoded all the macroblocks of the picture */
90 vlc_mutex_t lock_deccount;
92 /* Private data - the video output plugin might want to put stuff here to
93 * keep track of the picture */
94 struct picture_sys_s *p_sys;
98 /*****************************************************************************
99 * picture_heap_t: video picture heap, either render (to store pictures used
100 * by the decoder) or output (to store pictures displayed by the vout plugin)
101 *****************************************************************************/
102 typedef struct picture_heap_s
104 int i_pictures; /* current heap size */
106 /* Picture static properties - those properties are fixed at initialization
107 * and should NOT be modified */
108 int i_width; /* picture width */
109 int i_height; /* picture height */
110 u32 i_chroma; /* picture chroma */
111 int i_aspect; /* aspect ratio */
114 picture_t* pp_picture[VOUT_MAX_PICTURES]; /* pictures */
118 /*****************************************************************************
119 * Flags used to describe the status of a picture
120 *****************************************************************************/
123 #define EMPTY_PICTURE 0 /* empty buffer */
124 #define MEMORY_PICTURE 100 /* heap-allocated buffer */
125 #define DIRECT_PICTURE 200 /* direct buffer */
128 #define FREE_PICTURE 0 /* free and not allocated */
129 #define RESERVED_PICTURE 1 /* allocated and reserved */
130 #define RESERVED_DATED_PICTURE 2 /* waiting for DisplayPicture */
131 #define RESERVED_DISP_PICTURE 3 /* waiting for a DatePicture */
132 #define READY_PICTURE 4 /* ready for display */
133 #define DISPLAYED_PICTURE 5 /* been displayed but is linked */
134 #define DESTROYED_PICTURE 6 /* allocated but no more used */
136 /*****************************************************************************
137 * Flags used to describe picture format - see http://www.webartz.com/fourcc/
138 *****************************************************************************/
140 /* Packed RGB formats */
141 #define FOURCC_BI_RGB 0x00000000 /* RGB for 8bpp */
142 #define FOURCC_RGB 0x32424752 /* alias for BI_RGB */
143 #define FOURCC_BI_BITFIELDS 0x00000003 /* RGB, for 16, 24, 32bpp */
144 #define FOURCC_RV15 0x35315652 /* RGB 15bpp, 0x1f, 0x7e0, 0xf800 */
145 #define FOURCC_RV16 0x36315652 /* RGB 16bpp, 0x1f, 0x3e0, 0x7c00 */
147 /* Planar YUV formats */
148 #define FOURCC_I420 0x30323449 /* Planar 4:2:0, Y:U:V */
149 #define FOURCC_IYUV 0x56555949 /* alias for I420 */
150 #define FOURCC_YV12 0x32315659 /* Planar 4:2:0, Y:V:U */
152 /* Packed YUV formats */
153 #define FOURCC_IUYV 0x56595549 /* Packed 4:2:2, U:Y:V:Y, interlaced */
154 #define FOURCC_UYVY 0x59565955 /* Packed 4:2:2, U:Y:V:Y */
155 #define FOURCC_UYNV 0x564e5955 /* alias for UYVY */
156 #define FOURCC_Y422 0x32323459 /* alias for UYVY */
157 #define FOURCC_cyuv 0x76757963 /* Packed 4:2:2, U:Y:V:Y, reverted */
158 #define FOURCC_YUY2 0x32595559 /* Packed 4:2:2, Y:U:Y:V */
159 #define FOURCC_YUNV 0x564e5559 /* alias for YUY2 */
160 #define FOURCC_YVYU 0x55585659 /* Packed 4:2:2, Y:V:Y:U */
161 #define FOURCC_Y211 0x31313259 /* Packed 2:1:1, Y:U:Y:V */
163 /* Custom formats which we use but which don't exist in the fourcc database */
164 #define FOURCC_I422 0x32323449 /* Planar 4:2:2, Y:U:V */
165 #define FOURCC_I444 0x34343449 /* Planar 4:4:4, Y:U:V */
173 #define Y_PIXELS p[Y_PLANE].p_pixels
174 #define U_PIXELS p[U_PLANE].p_pixels
175 #define V_PIXELS p[V_PLANE].p_pixels
177 /*****************************************************************************
178 * vout_CopyPicture: copy a picture to another one
179 *****************************************************************************
180 * This function takes advantage of the image format, and reduces the
181 * number of calls to memcpy() to the minimum. Source and destination
182 * images must have same width, height, and chroma.
183 *****************************************************************************/
184 static __inline__ void vout_CopyPicture( picture_t *p_src, picture_t *p_dest )
188 for( i = 0; i < p_src->i_planes ; i++ )
190 if( p_src->p[i].i_pitch == p_dest->p[i].i_pitch )
192 if( p_src->p[i].b_margin )
194 /* If p_src->b_margin is set, p_dest->b_margin must be set */
195 if( p_dest->p[i].b_hidden )
197 /* There are margins, but they are hidden : perfect ! */
198 FAST_MEMCPY( p_dest->p[i].p_pixels, p_src->p[i].p_pixels,
199 p_src->p[i].i_pitch * p_src->p[i].i_lines );
204 /* We can't directly copy the margin. Too bad. */
209 /* Same pitch, no margins : perfect ! */
210 FAST_MEMCPY( p_dest->p[i].p_pixels, p_src->p[i].p_pixels,
211 p_src->p[i].i_pitch * p_src->p[i].i_lines );
217 /* Pitch values are different */
220 /* We need to proceed line by line */
222 u8 *p_in = p_src->p[i].p_pixels, *p_out = p_dest->p[i].p_pixels;
225 for( i_line = p_src->p[i].i_lines; i_line--; )
227 FAST_MEMCPY( p_out, p_in, p_src->p[i].i_visible_bytes );
228 p_in += p_src->p[i].i_pitch;
229 p_out += p_dest->p[i].i_pitch;
235 /*****************************************************************************
236 * subpicture_t: video subtitle
237 *****************************************************************************
238 * Any subtitle destined to be displayed by a video output thread should
239 * be stored in this structure from it's creation to it's effective display.
240 * Subtitle type and flags should only be modified by the output thread. Note
241 * that an empty subtitle MUST have its flags set to 0.
242 *****************************************************************************/
243 typedef struct subpicture_s
245 /* Type and flags - should NOT be modified except by the vout thread */
246 int i_type; /* type */
247 int i_status; /* flags */
248 int i_size; /* data size */
249 struct subpicture_s * p_next; /* next subtitle to be displayed */
251 /* Date properties */
252 mtime_t i_start; /* beginning of display date */
253 mtime_t i_stop; /* end of display date */
254 boolean_t b_ephemer; /* does the subtitle have a TTL ? */
256 /* Display properties - these properties are only indicative and may be
257 * changed by the video output thread, or simply ignored depending of the
259 int i_x; /* offset from alignment position */
260 int i_y; /* offset from alignment position */
261 int i_width; /* picture width */
262 int i_height; /* picture height */
263 int i_horizontal_align; /* horizontal alignment */
264 int i_vertical_align; /* vertical alignment */
266 /* Additionnal properties depending of the subpicture type */
269 /* Text subpictures properties - text is stored in data area, in ASCIIZ
273 p_vout_font_t p_font; /* font, NULL for default */
274 int i_style; /* text style */
275 u32 i_char_color; /* character color */
276 u32 i_border_color; /* border color */
277 u32 i_bg_color; /* background color */
279 /* DVD subpicture units properties */
282 int i_offset[2]; /* byte offsets to data */
286 /* Subpicture data, format depends of type - data can always be freely
287 * modified. p_data itself (the pointer) should NEVER be modified. */
288 void * p_data; /* subpicture data */
291 /* Subpicture type */
292 #define EMPTY_SUBPICTURE 0 /* subtitle slot is empty and available */
293 #define DVD_SUBPICTURE 100 /* DVD subpicture unit */
294 #define TEXT_SUBPICTURE 200 /* single line text */
296 /* Subpicture status */
297 #define FREE_SUBPICTURE 0 /* free and not allocated */
298 #define RESERVED_SUBPICTURE 1 /* allocated and reserved */
299 #define READY_SUBPICTURE 2 /* ready for display */
300 #define DESTROYED_SUBPICTURE 3 /* allocated but not used anymore */
302 /* Alignment types */
303 #define RIGHT_ALIGN 10 /* x is absolute for right */
304 #define LEFT_ALIGN 11 /* x is absolute for left */
305 #define RIGHT_RALIGN 12 /* x is relative for right from right */
306 #define LEFT_RALIGN 13 /* x is relative for left from left */
308 #define CENTER_ALIGN 20 /* x, y are absolute for center */
309 #define CENTER_RALIGN 21 /* x,y are relative for center from center */
311 #define BOTTOM_ALIGN 30 /* y is absolute for bottom */
312 #define TOP_ALIGN 31 /* y is absolute for top */
313 #define BOTTOM_RALIGN 32 /* y is relative for bottom from bottom */
314 #define TOP_RALIGN 33 /* y is relative for top from top */
315 #define SUBTITLE_RALIGN 34 /* y is relative for center from subtitle */