1 /*****************************************************************************
2 * vpar_blocks.h : video parser blocks management
4 *****************************************************************************
5 *****************************************************************************
16 *****************************************************************************/
18 /*****************************************************************************
19 * macroblock_t : information on a macroblock
20 *****************************************************************************/
21 typedef struct macroblock_s
23 picture_t * p_picture;
25 int i_l_x, i_l_y; /* position of macroblock (lum) */
26 int i_c_x, i_c_y; /* position of macroblock (chroma) */
27 int i_chroma_nb_blocks; /* nb of bks for a chr comp */
28 int i_l_stride; /* number of data_t to ignore
29 * when changing lines */
30 int i_c_stride; /* idem, for chroma */
32 /* IDCT information */
33 elem_t ppi_blocks[12][64]; /* blocks */
34 f_idct_t pf_idct[12]; /* sparse IDCT or not ? */
35 int pi_sparse_pos[12];
37 /* Motion compensation information */
38 f_motion_t pf_motion; /* function to use for motion comp */
39 f_chroma_motion_t pf_chroma_motion;
40 picture_t * p_backw_top;
41 picture_t * p_backw_bot;
42 picture_t * p_forw_top;
43 picture_t * p_forw_bot;
44 int ppi_field_select[2][2];
45 int pppi_motion_vectors[2][2][2];
48 /* AddBlock information */
49 f_addb_t pf_addb[12]; /* pointer to the Add function */
50 data_t * p_data[12]; /* pointer to the position
51 * in the final picture */
52 int i_addb_l_stride, i_addb_c_stride;
55 /*****************************************************************************
56 * macroblock_parsing_t : parser context descriptor #3
57 *****************************************************************************/
60 int i_mb_type, i_motion_type, i_mv_count, i_mv_format;
62 /* AddressIncrement information */
66 int i_coded_block_pattern;
69 int i_l_x, i_l_y, i_c_x, i_c_y;
70 } macroblock_parsing_t;
72 /******************************************************************************
73 * lookup_t : entry type for lookup tables *
74 ******************************************************************************/
76 typedef struct lookup_s
82 /*****************************************************************************
84 *****************************************************************************/
85 /* Macroblock types */
88 #define MB_MOTION_BACKWARD 4
89 #define MB_MOTION_FORWARD 8
93 #define MOTION_FIELD 1
94 #define MOTION_FRAME 2
98 /* Macroblock Address Increment types */
99 #define MB_ADDRINC_ESCAPE 8
100 #define MB_ADDRINC_STUFFING 15
102 /* Error constant for lookup tables */
103 #define MB_ERROR (-1)
106 #define SCAN_ZIGZAG 0
109 /*****************************************************************************
111 *****************************************************************************/
112 extern int * pi_default_intra_quant;
113 extern int * pi_default_nonintra_quant;
114 extern u8 pi_scan[2][64];
116 /*****************************************************************************
118 *****************************************************************************/
119 void vpar_InitCrop( struct vpar_thread_s* p_vpar );
120 int vpar_CodedPattern420( struct vpar_thread_s* p_vpar );
121 int vpar_CodedPattern422( struct vpar_thread_s* p_vpar );
122 int vpar_CodedPattern444( struct vpar_thread_s* p_vpar );
123 int vpar_IMBType( struct vpar_thread_s* p_vpar );
124 int vpar_PMBType( struct vpar_thread_s* p_vpar );
125 int vpar_BMBType( struct vpar_thread_s* p_vpar );
126 int vpar_DMBType( struct vpar_thread_s* p_vpar );