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 int i_mb_type; /* macroblock type */
25 int i_current_structure;
26 boolean_t b_P_coding_type; /* Is it P_CODING_TYPE ? */
27 picture_t * p_picture;
28 int i_l_x, i_l_y; /* position of macroblock (lum) */
29 int i_c_x, i_c_y; /* position of macroblock (chroma) */
30 int i_chroma_nb_blocks; /* nb of bks for a chr comp */
31 int i_l_stride; /* number of yuv_data_t to ignore
32 * when changing lines */
33 int i_c_stride; /* idem, for chroma */
35 /* IDCT information */
36 elem_t ppi_blocks[12][64]; /* blocks */
37 f_idct_t pf_idct[12]; /* sparse IDCT or not ? */
38 int pi_sparse_pos[12];
40 /* Motion compensation information */
41 f_motion_t pf_motion; /* function to use for motion comp */
42 f_chroma_motion_t pf_chroma_motion;
43 picture_t * p_backward;
44 picture_t * p_forward;
45 int ppi_field_select[2][2];
46 int pppi_motion_vectors[2][2][2];
49 /* AddBlock information */
50 f_addb_t pf_addb[12]; /* pointer to the Add function */
51 yuv_data_t * p_data[12]; /* pointer to the position
52 * in the final picture */
53 int i_addb_l_stride, i_addb_c_stride;
56 /*****************************************************************************
57 * macroblock_parsing_t : parser context descriptor #3
58 *****************************************************************************/
61 int i_mb_type, i_motion_type, i_mv_count, i_mv_format;
65 int i_coded_block_pattern;
68 int i_l_x, i_l_y, i_c_x, i_c_y;
69 } macroblock_parsing_t;
71 /*****************************************************************************
72 * lookup_t : entry type for lookup tables *
73 *****************************************************************************/
75 typedef struct lookup_s
81 /******************************************************************************
82 * ac_lookup_t : special entry type for lookup tables about ac coefficients
83 *****************************************************************************/
85 typedef struct dct_lookup_s
92 /*****************************************************************************
94 *****************************************************************************/
95 /* Macroblock types */
98 #define MB_MOTION_BACKWARD 4
99 #define MB_MOTION_FORWARD 8
103 #define MOTION_FIELD 1
104 #define MOTION_FRAME 2
105 #define MOTION_16X8 2
108 /* Macroblock Address Increment types */
109 #define MB_ADDRINC_ESCAPE 8
110 #define MB_ADDRINC_STUFFING 15
112 /* Error constant for lookup tables */
113 #define MB_ERROR (-1)
116 #define SCAN_ZIGZAG 0
119 /* Constant for block decoding */
121 #define DCT_ESCAPE 65
123 /*****************************************************************************
125 *****************************************************************************/
126 extern int pi_default_intra_quant[];
127 extern int pi_default_nonintra_quant[];
128 extern u8 pi_scan[2][64];
130 /*****************************************************************************
132 *****************************************************************************/
133 void vpar_InitCrop( struct vpar_thread_s* p_vpar );
134 int vpar_CodedPattern420( struct vpar_thread_s* p_vpar );
135 int vpar_CodedPattern422( struct vpar_thread_s* p_vpar );
136 int vpar_CodedPattern444( struct vpar_thread_s* p_vpar );
137 int vpar_IMBType( struct vpar_thread_s* p_vpar );
138 int vpar_PMBType( struct vpar_thread_s* p_vpar );
139 int vpar_BMBType( struct vpar_thread_s* p_vpar );
140 int vpar_DMBType( struct vpar_thread_s* p_vpar );