1 /*****************************************************************************
2 * vpar_blocks.h : video parser blocks management
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
21 *****************************************************************************/
23 /*****************************************************************************
34 *****************************************************************************/
36 /*****************************************************************************
37 * macroblock_t : information on a macroblock passed to the video_decoder
39 *****************************************************************************/
40 typedef struct macroblock_s
42 picture_t * p_picture; /* current frame in progress */
44 int i_mb_type; /* macroblock type */
45 int i_coded_block_pattern;
46 /* which blocks are coded ? */
47 int i_chroma_nb_blocks; /* number of blocks for
48 * chroma components */
50 /* IDCT information */
51 dctelem_t ppi_blocks[12][64]; /* blocks */
52 f_idct_t pf_idct[12]; /* sparse IDCT or not ? */
53 int pi_sparse_pos[12]; /* position of the
56 /* Motion compensation information */
57 f_motion_t pf_motion; /* function to use for motion comp */
58 picture_t * p_backward; /* backward reference frame */
59 picture_t * p_forward; /* forward reference frame */
60 int ppi_field_select[2][2]; /* field to use to
62 int pppi_motion_vectors[2][2][2]; /* motion vectors */
63 int ppi_dmv[2][2]; /* differential motion vectors */
64 /* coordinates of the block in the picture */
68 int i_l_stride; /* number of yuv_data_t to
69 * ignore when changing line */
70 int i_c_stride; /* idem, for chroma */
71 boolean_t b_P_second; /* Second field of a P picture ?
72 * (used to determine the predicting
74 boolean_t b_motion_field; /* Field we are predicting
75 * (top field or bottom field) */
77 /* AddBlock information */
78 yuv_data_t * p_data[12]; /* pointer to the position
79 * in the final picture */
80 int i_addb_l_stride, i_addb_c_stride;
81 /* nb of coeffs to jump when changing lines */
84 /*****************************************************************************
85 * macroblock_parsing_t : macroblock context & predictors
86 *****************************************************************************/
89 unsigned char i_quantizer_scale; /* scale of the quantization
91 int pi_dc_dct_pred[3]; /* ISO/IEC 13818-2 7.2.1 */
92 int pppi_pmv[2][2][2]; /* Motion vect predictors, 7.6.3 */
94 /* Context used to optimize block parsing */
95 int i_motion_type, i_mv_count, i_mv_format;
96 boolean_t b_dmv, b_dct_type;
98 /* Coordinates of the upper-left pixel of the macroblock, in lum and
100 int i_l_x, i_l_y, i_c_x, i_c_y;
101 } macroblock_parsing_t;
103 /*****************************************************************************
104 * lookup_t : entry type for lookup tables *
105 *****************************************************************************/
106 typedef struct lookup_s
112 /*****************************************************************************
113 * ac_lookup_t : special entry type for lookup tables about ac coefficients
114 *****************************************************************************/
115 typedef struct dct_lookup_s
122 /*****************************************************************************
124 *****************************************************************************/
125 /* Macroblock types */
128 #define MB_MOTION_BACKWARD 4
129 #define MB_MOTION_FORWARD 8
133 #define MOTION_FIELD 1
134 #define MOTION_FRAME 2
135 #define MOTION_16X8 2
138 /* Macroblock Address Increment types */
139 #define MB_ADDRINC_ESCAPE 8
140 #define MB_ADDRINC_STUFFING 15
142 /* Error constant for lookup tables */
143 #define MB_ERROR (-1)
146 #define SCAN_ZIGZAG 0
149 /* Constant for block decoding */
151 #define DCT_ESCAPE 65
153 /*****************************************************************************
155 *****************************************************************************/
156 extern int pi_default_intra_quant[];
157 extern int pi_default_nonintra_quant[];
158 extern u8 pi_scan[2][64];
160 /*****************************************************************************
162 *****************************************************************************/
163 void vpar_InitCrop( struct vpar_thread_s* p_vpar );
164 void vpar_InitMbAddrInc( struct vpar_thread_s * p_vpar );
165 void vpar_InitPMBType( struct vpar_thread_s * p_vpar );
166 void vpar_InitBMBType( struct vpar_thread_s * p_vpar );
167 void vpar_InitCodedPattern( struct vpar_thread_s * p_vpar );
168 void vpar_InitDCTTables( struct vpar_thread_s * p_vpar );
169 void vpar_PictureDataGENERIC( struct vpar_thread_s * p_vpar, int i_mb_base );
170 #if (VPAR_OPTIM_LEVEL > 0)
171 void vpar_PictureData2I420F0( struct vpar_thread_s * p_vpar, int i_mb_base );
172 void vpar_PictureData2P420F0( struct vpar_thread_s * p_vpar, int i_mb_base );
173 void vpar_PictureData2B420F0( struct vpar_thread_s * p_vpar, int i_mb_base );
175 #if (VPAR_OPTIM_LEVEL > 1)
176 void vpar_PictureData2I420TZ( struct vpar_thread_s * p_vpar, int i_mb_base );
177 void vpar_PictureData2P420TZ( struct vpar_thread_s * p_vpar, int i_mb_base );
178 void vpar_PictureData2B420TZ( struct vpar_thread_s * p_vpar, int i_mb_base );
179 void vpar_PictureData2I420BZ( struct vpar_thread_s * p_vpar, int i_mb_base );
180 void vpar_PictureData2P420BZ( struct vpar_thread_s * p_vpar, int i_mb_base );
181 void vpar_PictureData2B420BZ( struct vpar_thread_s * p_vpar, int i_mb_base );