1 /*******************************************************************************
2 * video.h: common video definitions
4 *******************************************************************************
5 * This header is required by all modules which have to handle pictures. It
6 * includes all common video types and constants.
7 *******************************************************************************
12 *******************************************************************************/
14 /*******************************************************************************
15 * yuv_data_t: type for storing one Y, U or V sample.
16 *******************************************************************************/
17 typedef u8 yuv_data_t;
19 /*******************************************************************************
20 * picture_t: video picture
21 *******************************************************************************
22 * Any picture destined to be displayed by a video output thread should be
23 * stored in this structure from it's creation to it's effective display.
24 * Picture type and flags should only be modified by the output thread. Note
25 * that an empty picture MUST have its flags set to 0.
26 *******************************************************************************/
27 typedef struct picture_s
29 /* Type and flags - should NOT be modified except by the vout thread */
30 int i_type; /* picture type */
31 int i_status; /* picture flags */
32 int i_matrix_coefficients; /* in YUV type, encoding type */
34 /* Picture management properties - these properties can be modified using
35 * the video output thread API, but should ne be written directly */
36 int i_refcount; /* link reference counter */
37 mtime_t date; /* display date */
39 /* Picture static properties - those properties are fixed at initialization
40 * and should NOT be modified */
41 int i_width; /* picture width */
42 int i_height; /* picture height */
43 int i_chroma_width; /* chroma width */
45 /* Picture dynamic properties - those properties can be changed by the
47 int i_display_horizontal_offset; /* ISO/IEC 13818-2 6.3.12 */
48 int i_display_vertical_offset; /* ISO/IEC 13818-2 6.3.12 */
49 int i_display_width; /* useful picture width */
50 int i_display_height; /* useful picture height */
51 int i_aspect_ratio; /* aspect ratio */
53 /* Macroblock counter - the decoder use it to verify if it has
54 * decoded all the macroblocks of the picture */
56 vlc_mutex_t lock_deccount;
58 /* Picture data - data can always be freely modified. p_data itself
59 * (the pointer) should NEVER be modified. In YUV format, the p_y, p_u and
60 * p_v data pointers refers to different areas of p_data, and should not
62 void * p_data; /* picture data */
63 yuv_data_t * p_y; /* pointer to beginning of Y image in p_data */
64 yuv_data_t * p_u; /* pointer to beginning of U image in p_data */
65 yuv_data_t * p_v; /* pointer to beginning of V image in p_data */
69 #define EMPTY_PICTURE 0 /* picture slot is empty and available */
70 #define YUV_420_PICTURE 100 /* 4:2:0 YUV picture */
71 #define YUV_422_PICTURE 101 /* 4:2:2 YUV picture */
72 #define YUV_444_PICTURE 102 /* 4:4:4 YUV picture */
75 #define FREE_PICTURE 0 /* picture is free and not allocated */
76 #define RESERVED_PICTURE 1 /* picture is allocated and reserved */
77 #define RESERVED_DATED_PICTURE 2 /* picture is waiting for DisplayPicture */
78 #define RESERVED_DISP_PICTURE 3 /* picture is waiting for a DatePixture */
79 #define READY_PICTURE 4 /* picture is ready for display */
80 #define DISPLAYED_PICTURE 5 /* picture has been displayed but is linked */
81 #define DESTROYED_PICTURE 6 /* picture is allocated but no more used */
83 /* Aspect ratios (ISO/IEC 13818-2 section 6.3.3, table 6-3) */
84 #define AR_SQUARE_PICTURE 1 /* square pixels */
85 #define AR_3_4_PICTURE 2 /* 3:4 picture (TV) */
86 #define AR_16_9_PICTURE 3 /* 16:9 picture (wide screen) */
87 #define AR_221_1_PICTURE 4 /* 2.21:1 picture (movie) */
89 /*******************************************************************************
90 * spu_t: video sub picture unit
91 *******************************************************************************
92 * Any sub picture unit destined to be displayed by a video output thread should
93 * be stored in this structure from it's creation to it's effective display.
94 * Subtitle type and flags should only be modified by the output thread. Note
95 * that an empty subtitle MUST have its flags set to 0.
96 *******************************************************************************/
99 /* Type and flags - should NOT be modified except by the vout thread */
100 int i_type; /* spu type */
101 int i_status; /* spu flags */
103 /* Other properties */
104 mtime_t begin_date; /* beginning of display date */
105 mtime_t end_date; /* end of display date */
107 /* Sub picture unit data - data can always be freely modified. p_data itself
108 * (the pointer) should NEVER be modified. */
109 void * p_data; /* spu data */
113 #define EMPTY_SPU 0 /* subtitle slot is empty and available */
114 #define RLE_SPU 100 /* RLE encoded subtitle */
116 /* Subpicture status */
117 #define FREE_SPU 0 /* subtitle is free and not allocated */
118 #define RESERVED_SPU 1 /* subtitle is allocated and reserved */
119 #define READY_SPU 2 /* subtitle is ready for display */
120 #define DESTROYED_SPU 3 /* subtitle is allocated but no more used */