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 *******************************************************************************/
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 properties - those properties are fixed at initialization and
35 * should NOT be modified. Note that for YUV pictures, i_bytes_per_line is
36 * the number of bytes for ONE of the Y, U or V pictures, and therefore the
37 * number of bytes in the picture is 3 * i_height * i_bytes_per_line */
38 int i_width; /* picture width */
39 int i_height; /* picture height */
40 int i_bytes_per_line; /* total number of bytes per line */
42 /* Link reference counter - it can be modified using vout_Link and
43 * vout_Unlink functions, or directly if the picture is independant */
44 int i_refcount; /* link reference counter */
46 /* Macroblock counter - the decoder use it to verify if it has
47 * decoded all the macroblocks of the picture */
49 vlc_mutex_t lock_deccount;
51 /* Video properties - those properties should not be modified once
52 * the picture is in a heap, but can be freely modified if it is
54 mtime_t date; /* display date */
56 /* Picture data - data can always be freely modified. p_data itself
57 * (the pointer) should NEVER be modified. In YUV format, the p_y, p_u and
58 * p_v data pointers refers to different areas of p_data, and should not
60 void * p_data; /* picture data */
61 yuv_data_t * p_y; /* pointer to beginning of Y image in p_data */
62 yuv_data_t * p_u; /* pointer to beginning of U image in p_data */
63 yuv_data_t * p_v; /* pointer to beginning of V image in p_data */
68 #define EMPTY_PICTURE 0 /* picture slot is empty and available */
69 #define YUV_420_PICTURE 100 /* 4:2:0 YUV picture */
70 #define YUV_422_PICTURE 101 /* 4:2:2 YUV picture */
71 #define YUV_444_PICTURE 102 /* 4:4:4 YUV picture */
74 #define FREE_PICTURE 0 /* picture is free and not allocated */
75 #define RESERVED_PICTURE 1 /* picture is allocated and reserved */
76 #define READY_PICTURE 2 /* picture is ready for display */
77 #define DISPLAYED_PICTURE 3 /* picture has been displayed but is linked */
78 #define DESTROYED_PICTURE 4 /* picture is allocated but no more used */