1 /*****************************************************************************
2 * vpar_blocks.c : blocks parsing
4 *****************************************************************************/
6 /*****************************************************************************
8 *****************************************************************************/
16 #include <X11/extensions/XShm.h>
21 #include "vlc_thread.h"
24 #include "debug.h" /* ?? temporaire, requis par netlist.h */
27 #include "input_netlist.h"
28 #include "decoder_fifo.h"
30 #include "video_output.h"
32 #include "vdec_idct.h"
33 #include "video_decoder.h"
34 #include "vdec_motion.h"
36 #include "vpar_blocks.h"
37 #include "vpar_headers.h"
38 #include "video_fifo.h"
39 #include "vpar_synchro.h"
40 #include "video_parser.h"
45 static __inline__ void InitMacroblock( vpar_thread_t * p_vpar,
46 macroblock_t * p_mb );
47 static __inline__ int MacroblockAddressIncrement( vpar_thread_t * p_vpar );
48 static __inline__ void MacroblockModes( vpar_thread_t * p_vpar,
49 macroblock_t * p_mb );
50 typedef void (*f_decode_block_t)( vpar_thread_t *, macroblock_t *, int );
51 static void vpar_DecodeMPEG1Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b );
52 static void vpar_DecodeMPEG1Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b );
53 static void vpar_DecodeMPEG2Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b );
54 static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b );
57 * Initialisation tables
59 /* Table for coded_block_pattern resolution */
60 lookup_t pl_coded_pattern_init_table[512] =
61 { {MB_ERROR, 0}, {0, 9}, {39, 9}, {27, 9}, {59, 9}, {55, 9}, {47, 9}, {31, 9},
62 {58, 8}, {58, 8}, {54, 8}, {54, 8}, {46, 8}, {46, 8}, {30, 8}, {30, 8},
63 {57, 8}, {57, 8}, {53, 8}, {53, 8}, {45, 8}, {45, 8}, {29, 8}, {29, 8},
64 {38, 8}, {38, 8}, {26, 8}, {26, 8}, {37, 8}, {37, 8}, {25, 8}, {25, 8},
65 {43, 8}, {43, 8}, {23, 8}, {23, 8}, {51, 8}, {51, 8}, {15, 8}, {15, 8},
66 {42, 8}, {42, 8}, {22, 8}, {22, 8}, {50, 8}, {50, 8}, {14, 8}, {14, 8},
67 {41, 8}, {41, 8}, {21, 8}, {21, 8}, {49, 8}, {49, 8}, {13, 8}, {13, 8},
68 {35, 8}, {35, 8}, {19, 8}, {19, 8}, {11, 8}, {11, 8}, {7, 8}, {7, 8},
69 {34, 7}, {34, 7}, {34, 7}, {34, 7}, {18, 7}, {18, 7}, {18, 7}, {18, 7},
70 {10, 7}, {10, 7}, {10, 7}, {10, 7}, {6, 7}, {6, 7}, {6, 7}, {6, 7},
71 {33, 7}, {33, 7}, {33, 7}, {33, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7},
72 {9, 7}, {9, 7}, {9, 7}, {9, 7}, {5, 7}, {5, 7}, {5, 7}, {5, 7},
73 {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6},
74 {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6},
75 {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6},
76 {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6},
77 {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5},
78 {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5},
79 {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5},
80 {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5},
81 {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5},
82 {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5},
83 {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5},
84 {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5},
85 {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5},
86 {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5},
87 {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5},
88 {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5},
89 {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5},
90 {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5},
91 {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5},
92 {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5},
93 {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5},
94 {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5},
95 {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5},
96 {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5},
97 {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5},
98 {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5},
99 {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5},
100 {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5},
101 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
102 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
103 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
104 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
105 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
106 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
107 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
108 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
109 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
110 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
111 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
112 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
113 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
114 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
115 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
116 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
117 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
118 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
119 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
120 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
121 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
122 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
123 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
124 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3} };
126 /* Tables for dc DCT coefficients
127 * Tables are cut in two parts to reduce memory occupation
130 /* Table B-12, dct_dc_size_luminance, codes 00xxx ... 11110 */
131 lookup_t pl_dct_dc_lum_init_table_1[32] =
132 { {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
133 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
134 {0, 3}, {0, 3}, {0, 3}, {0, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3},
135 {4, 3}, {4, 3}, {4, 3}, {4, 3}, {5, 4}, {5, 4}, {6, 5}, {MB_ERROR, 0}
138 /* Table B-12, dct_dc_size_luminance, codes 111110xxx ... 111111111 */
139 lookup_t pl_dct_dc_lum_init_table_2[32] =
140 { {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6},
141 {8, 7}, {8, 7}, {8, 7}, {8, 7}, {9, 8}, {9, 8}, {10,9}, {11,9},
142 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0},
143 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0},
144 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0},
145 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}
148 /* Table B-13, dct_dc_size_chrominance, codes 00xxx ... 11110 */
149 lookup_t pl_dct_dc_chrom_init_table_1[32] =
150 { {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2},
151 {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
152 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
153 {3, 3}, {3, 3}, {3, 3}, {3, 3}, {4, 4}, {4, 4}, {5, 5}, {MB_ERROR, 0}
156 /* Table B-13, dct_dc_size_chrominance, codes 111110xxxx ... 1111111111 */
157 lookup_t pl_dct_dc_chrom_init_table_2[32] =
158 { {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
159 {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
160 {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7},
161 {8, 8}, {8, 8}, {8, 8}, {8, 8}, {9, 9}, {9, 9}, {10,10}, {11,10}
165 * Structure to store the tables B14 & B15
166 * Is constructed from the tables below
168 dct_lookup_t ppl_dct_coef[2][16384];
171 /* Tables for ac DCT coefficients. There are cut in many parts to save space */
172 /* Table B-14, DCT coefficients table zero,
173 * codes 0100 ... 1xxx (used for first (DC) coefficient)
175 dct_lookup_t pl_DCT_tab_dc[12] =
177 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
178 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1},
179 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1}
182 /* Table B-14, DCT coefficients table zero,
183 * codes 0100 ... 1xxx (used for all other coefficients)
185 dct_lookup_t pl_DCT_tab_ac[12] =
187 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
188 {DCT_EOB,0,2}, {DCT_EOB,0,2}, {DCT_EOB,0,2}, {DCT_EOB,0,2}, /* EOB */
189 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2}
192 /* Table B-14, DCT coefficients table zero,
193 * codes 000001xx ... 00111xxx
195 dct_lookup_t pl_DCT_tab0[60] =
197 {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6},
199 {2,2,7}, {2,2,7}, {9,1,7}, {9,1,7},
200 {0,4,7}, {0,4,7}, {8,1,7}, {8,1,7},
201 {7,1,6}, {7,1,6}, {7,1,6}, {7,1,6},
202 {6,1,6}, {6,1,6}, {6,1,6}, {6,1,6},
203 {1,2,6}, {1,2,6}, {1,2,6}, {1,2,6},
204 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
205 {13,1,8}, {0,6,8}, {12,1,8}, {11,1,8},
206 {3,2,8}, {1,3,8}, {0,5,8}, {10,1,8},
207 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
208 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
209 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
210 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
211 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
212 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5}
215 /* Table B-15, DCT coefficients table one,
216 * codes 000001xx ... 11111111
218 dct_lookup_t pl_DCT_tab0a[252] =
220 {65,0,6}, {65,0,6}, {65,0,6}, {65,0,6}, /* Escape */
221 {7,1,7}, {7,1,7}, {8,1,7}, {8,1,7},
222 {6,1,7}, {6,1,7}, {2,2,7}, {2,2,7},
223 {0,7,6}, {0,7,6}, {0,7,6}, {0,7,6},
224 {0,6,6}, {0,6,6}, {0,6,6}, {0,6,6},
225 {4,1,6}, {4,1,6}, {4,1,6}, {4,1,6},
226 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
227 {1,5,8}, {11,1,8}, {0,11,8}, {0,10,8},
228 {13,1,8}, {12,1,8}, {3,2,8}, {1,4,8},
229 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
230 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
231 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
232 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
233 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
234 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
235 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
236 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
237 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
238 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
239 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
240 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
241 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
242 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
243 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4}, /* EOB */
244 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
245 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
246 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
247 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
248 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
249 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
250 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
251 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
252 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
253 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
254 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
255 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
256 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
257 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
258 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
259 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
260 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
261 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
262 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
263 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
264 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
265 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
266 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
267 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
268 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
269 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
270 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
271 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
272 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
273 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
274 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
275 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
276 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
277 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
278 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
279 {9,1,7}, {9,1,7}, {1,3,7}, {1,3,7},
280 {10,1,7}, {10,1,7}, {0,8,7}, {0,8,7},
281 {0,9,7}, {0,9,7}, {0,12,8}, {0,13,8},
282 {2,3,8}, {4,2,8}, {0,14,8}, {0,15,8}
288 /* Table B-14, DCT coefficients table zero,
289 * codes 0000001000 ... 0000001111
291 dct_lookup_t pl_DCT_tab1[8] =
293 {16,1,10}, {5,2,10}, {0,7,10}, {2,3,10},
294 {1,4,10}, {15,1,10}, {14,1,10}, {4,2,10}
297 /* Table B-15, DCT coefficients table one,
298 * codes 000000100x ... 000000111x
300 dct_lookup_t pl_DCT_tab1a[8] =
302 {5,2,9}, {5,2,9}, {14,1,9}, {14,1,9},
303 {2,4,10}, {16,1,10}, {15,1,9}, {15,1,9}
306 /* Table B-14/15, DCT coefficients table zero / one,
307 * codes 000000010000 ... 000000011111
309 dct_lookup_t pl_DCT_tab2[16] =
311 {0,11,12}, {8,2,12}, {4,3,12}, {0,10,12},
312 {2,4,12}, {7,2,12}, {21,1,12}, {20,1,12},
313 {0,9,12}, {19,1,12}, {18,1,12}, {1,5,12},
314 {3,3,12}, {0,8,12}, {6,2,12}, {17,1,12}
317 /* Table B-14/15, DCT coefficients table zero / one,
318 * codes 0000000010000 ... 0000000011111
320 dct_lookup_t pl_DCT_tab3[16] =
322 {10,2,13}, {9,2,13}, {5,3,13}, {3,4,13},
323 {2,5,13}, {1,7,13}, {1,6,13}, {0,15,13},
324 {0,14,13}, {0,13,13}, {0,12,13}, {26,1,13},
325 {25,1,13}, {24,1,13}, {23,1,13}, {22,1,13}
328 /* Table B-14/15, DCT coefficients table zero / one,
329 * codes 00000000010000 ... 00000000011111
331 dct_lookup_t pl_DCT_tab4[16] =
333 {0,31,14}, {0,30,14}, {0,29,14}, {0,28,14},
334 {0,27,14}, {0,26,14}, {0,25,14}, {0,24,14},
335 {0,23,14}, {0,22,14}, {0,21,14}, {0,20,14},
336 {0,19,14}, {0,18,14}, {0,17,14}, {0,16,14}
339 /* Table B-14/15, DCT coefficients table zero / one,
340 * codes 000000000010000 ... 000000000011111
342 dct_lookup_t pl_DCT_tab5[16] =
344 {0,40,15}, {0,39,15}, {0,38,15}, {0,37,15},
345 {0,36,15}, {0,35,15}, {0,34,15}, {0,33,15},
346 {0,32,15}, {1,14,15}, {1,13,15}, {1,12,15},
347 {1,11,15}, {1,10,15}, {1,9,15}, {1,8,15}
350 /* Table B-14/15, DCT coefficients table zero / one,
351 * codes 0000000000010000 ... 0000000000011111
353 dct_lookup_t pl_DCT_tab6[16] =
355 {1,18,16}, {1,17,16}, {1,16,16}, {1,15,16},
356 {6,3,16}, {16,2,16}, {15,2,16}, {14,2,16},
357 {13,2,16}, {12,2,16}, {11,2,16}, {31,1,16},
358 {30,1,16}, {29,1,16}, {28,1,16}, {27,1,16}
361 * Initialization of lookup tables
364 /*****************************************************************************
365 * vpar_InitCrop : Initialize the crop table for saturation
366 * (ISO/IEC 13818-2 section 7.4.3)
367 *****************************************************************************/
368 #if defined(MPEG2_COMPLIANT) && !defined(VDEC_DFT)
369 void vpar_InitCrop( vpar_thread_t * p_vpar )
373 p_vpar->pi_crop = p_vpar->pi_crop_buf + 4096;
375 for( i_dummy = -4096; i_dummy < -2048; i_dummy++ )
377 p_vpar->pi_crop[i_dummy] = -2048;
379 for( ; i_dummy < 2047; i_dummy++ )
381 p_vpar->pi_crop[i_dummy] = i_dummy;
383 for( ; i_dummy < 4095; i_dummy++ )
385 p_vpar->pi_crop[i_dummy] = 2047;
390 /*****************************************************************************
391 * InitMbAddrInc : Initialize the lookup table for mb_addr_inc
392 *****************************************************************************/
394 /* Function for filling up the lookup table for mb_addr_inc */
395 void __inline__ FillMbAddrIncTable( vpar_thread_t * p_vpar,
396 int i_start, int i_end, int i_step,
397 int * pi_value, int i_length )
400 for( i_pos = i_start ; i_pos < i_end ; i_pos += i_step )
402 for( i_offset = 0 ; i_offset < i_step ; i_offset ++ )
404 p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_value = * pi_value;
405 p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_length = i_length;
411 /* Function that initialize the table using the last one */
412 void vpar_InitMbAddrInc( vpar_thread_t * p_vpar )
417 for( i_dummy = 0 ; i_dummy < 8 ; i_dummy++ )
419 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
420 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
423 p_vpar->pl_mb_addr_inc[8].i_value = MB_ADDRINC_ESCAPE;
424 p_vpar->pl_mb_addr_inc[8].i_length = 11;
426 for( i_dummy = 9 ; i_dummy < 15 ; i_dummy ++ )
428 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
429 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
432 p_vpar->pl_mb_addr_inc[15].i_value = MB_ADDRINC_STUFFING;
433 p_vpar->pl_mb_addr_inc[15].i_length = 11;
435 for( i_dummy = 16; i_dummy < 24; i_dummy++ )
437 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
438 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
443 FillMbAddrIncTable( p_vpar, 24, 36, 1, &i_value, 11 );
444 FillMbAddrIncTable( p_vpar, 36, 48, 2, &i_value, 10 );
445 FillMbAddrIncTable( p_vpar, 48, 96, 8, &i_value, 8 );
446 FillMbAddrIncTable( p_vpar, 96, 128, 16, &i_value, 7 );
447 FillMbAddrIncTable( p_vpar, 128, 256, 64, &i_value, 5 );
448 FillMbAddrIncTable( p_vpar, 256, 512, 128, &i_value, 4 );
449 FillMbAddrIncTable( p_vpar, 512, 1024, 256, &i_value, 3 );
450 FillMbAddrIncTable( p_vpar, 1024, 2048, 1024, &i_value, 1 );
453 /*****************************************************************************
454 * Init*MBType : Initialize lookup table for the Macroblock type
455 *****************************************************************************/
457 /* Fonction for filling up the tables */
458 static void __inline__ FillMBType( vpar_thread_t * p_vpar,
467 for( i_dummy = i_start ; i_dummy < i_end ; i_dummy++ )
469 p_vpar->ppl_mb_type[i_mb_type][i_dummy].i_value = i_value;
470 p_vpar->ppl_mb_type[i_mb_type][i_dummy].i_length = i_length;
474 /* Fonction that fills the table for P MB_Type */
475 void vpar_InitPMBType( vpar_thread_t * p_vpar )
477 FillMBType( p_vpar, 0, 32, 64, MB_MOTION_FORWARD|MB_PATTERN, 1 );
478 FillMBType( p_vpar, 0, 16, 32, MB_PATTERN, 2 );
479 FillMBType( p_vpar, 0, 8, 16, MB_MOTION_FORWARD, 3 );
480 FillMBType( p_vpar, 0, 6, 8, MB_INTRA, 5 );
481 FillMBType( p_vpar, 0, 4, 6, MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN, 5 );
482 FillMBType( p_vpar, 0, 2, 4, MB_QUANT|MB_PATTERN, 5 );
483 p_vpar->ppl_mb_type[0][1].i_value = MB_QUANT|MB_INTRA;
484 p_vpar->ppl_mb_type[0][1].i_length = 6;
485 p_vpar->ppl_mb_type[0][0].i_value = MB_ERROR;
486 p_vpar->ppl_mb_type[0][0].i_length = 0;
489 /* Fonction that fills the table for B MB_Type */
490 void vpar_InitBMBType( vpar_thread_t * p_vpar )
492 FillMBType( p_vpar, 1, 48, 64, MB_MOTION_FORWARD
493 |MB_MOTION_BACKWARD|MB_PATTERN, 2 );
494 FillMBType( p_vpar, 1, 32, 48, MB_MOTION_FORWARD|MB_MOTION_BACKWARD, 2 );
495 FillMBType( p_vpar, 1, 24, 32, MB_MOTION_BACKWARD|MB_PATTERN, 3 );
496 FillMBType( p_vpar, 1, 16, 24, MB_MOTION_BACKWARD, 3 );
497 FillMBType( p_vpar, 1, 12, 16, MB_MOTION_FORWARD|MB_PATTERN, 4 );
498 FillMBType( p_vpar, 1, 8, 12, MB_MOTION_FORWARD, 4 );
499 FillMBType( p_vpar, 1, 6, 8, MB_INTRA, 5 );
500 FillMBType( p_vpar, 1, 4, 6, MB_QUANT|MB_MOTION_FORWARD
501 |MB_MOTION_BACKWARD|MB_PATTERN, 5 );
502 p_vpar->ppl_mb_type[1][3].i_value = MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN;
503 p_vpar->ppl_mb_type[1][3].i_length = 6;
504 p_vpar->ppl_mb_type[1][2].i_value = MB_QUANT|MB_MOTION_BACKWARD|MB_PATTERN;
505 p_vpar->ppl_mb_type[1][2].i_length = 6;
506 p_vpar->ppl_mb_type[1][1].i_value = MB_QUANT|MB_INTRA;
507 p_vpar->ppl_mb_type[1][1].i_length = 6;
508 p_vpar->ppl_mb_type[1][0].i_value =MB_ERROR;
509 p_vpar->ppl_mb_type[1][0].i_length = 0;
512 /*****************************************************************************
513 * InitCodedPattern : Initialize the lookup table for decoding
514 * coded block pattern
515 *****************************************************************************/
516 void vpar_InitCodedPattern( vpar_thread_t * p_vpar )
518 p_vpar->pl_coded_pattern = (lookup_t*) pl_coded_pattern_init_table;
521 /*****************************************************************************
522 * InitDCT : Initialize tables giving the length of the dct coefficient
524 *****************************************************************************/
526 /* First fonction for filling the table */
527 static void __inline__ FillDCTTable( dct_lookup_t * p_tab_dest, dct_lookup_t * p_tab_src,
528 int i_step, int i_nb_elem, int i_offset )
530 int i_dummy, i_dummy2;
532 for( i_dummy=0 ; i_dummy < i_nb_elem ; i_dummy++ )
534 for( i_dummy2=0 ; i_dummy2 < i_step ; i_dummy2++ )
536 p_tab_dest[(i_dummy+i_offset)*i_step+i_dummy2] = p_tab_src[i_dummy];
542 /* Fonction that actually fills the table or create the pointers */
543 void vpar_InitDCTTables( vpar_thread_t * p_vpar )
545 /* Tables are cut in two parts to reduce memory occupation */
546 p_vpar->pppl_dct_dc_size[0][0] = pl_dct_dc_lum_init_table_1;
547 p_vpar->pppl_dct_dc_size[0][1] = pl_dct_dc_lum_init_table_2;
548 p_vpar->pppl_dct_dc_size[1][0] = pl_dct_dc_chrom_init_table_1;
549 p_vpar->pppl_dct_dc_size[1][1] = pl_dct_dc_chrom_init_table_2;
551 memset( ppl_dct_coef[0], MB_ERROR, 16 );
552 memset( ppl_dct_coef[1], MB_ERROR, 16 );
554 /* For table B14 & B15, we have a pointer to tables */
555 /* We fill the table thanks to the fonction defined above */
556 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab0, 256, 60, 4 );
557 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab1, 64, 8, 8 );
558 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab2, 16, 16, 16 );
559 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab3, 8, 16, 16 );
560 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab4, 4, 16, 16 );
561 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab5, 2, 16, 16 );
562 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab6, 1, 16, 16 );
564 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab0a, 256, 60, 4 );
565 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab1a, 64, 8, 8 );
566 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab2, 16, 16, 16 );
567 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab3, 8, 16, 16 );
568 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab4, 4, 16, 16 );
569 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab5, 2, 16, 16 );
570 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab6, 1, 16, 16 );
574 * Macroblock parsing functions
577 /*****************************************************************************
578 * vpar_ParseMacroblock : Parse the next macroblock
579 *****************************************************************************/
580 void vpar_ParseMacroblock( vpar_thread_t * p_vpar, int * pi_mb_address,
581 int i_mb_previous, int i_mb_base )
583 static f_addb_t ppf_addb_intra[2] = {vdec_AddBlock, vdec_CopyBlock};
584 static f_decode_block_t pppf_decode_block[2][2] =
585 { {vpar_DecodeMPEG1Non, vpar_DecodeMPEG1Intra},
586 {vpar_DecodeMPEG2Non, vpar_DecodeMPEG2Intra} };
587 static int pi_x[12] = {0,8,0,8,0,0,0,0,8,8,8,8};
588 static int pi_y[2][12] = { {0,0,8,8,0,0,8,8,0,0,8,8},
589 {0,0,1,1,0,0,1,1,0,0,1,1} };
590 static int pi_chroma_hor[4] = { 0, 1, 1, 0 };
591 static int pi_chroma_ver[4] = { 0, 1, 0, 0 };
593 int i_mb, i_b, i_mask;
596 yuv_data_t * p_data1;
597 yuv_data_t * p_data2;
599 /************* DEBUG *************/
600 static int i_count = 0;
602 boolean_t b_stop = 0;
604 i_inc = MacroblockAddressIncrement( p_vpar );
606 *pi_mb_address += i_inc;
608 //*pi_mb_address += MacroblockAddressIncrement( p_vpar );
610 // fprintf( stderr, "inc : %d (%d)\n", *pi_mb_address, i_inc );
611 if( 0 )//i_count > 8 )
619 // i_count != *pi_mb_address)
622 fprintf( stderr, "i_count = %d (%d)\n", i_count, i_inc );
623 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
624 fprintf( stderr, "%x ", GetBits( &p_vpar->bit_stream, 16 ) );
625 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
626 fprintf( stderr, "%x\n", GetBits( &p_vpar->bit_stream, 16 ) );
627 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
628 fprintf( stderr, "%x ", GetBits( &p_vpar->bit_stream, 16 ) );
629 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
630 fprintf( stderr, "%x\n", GetBits( &p_vpar->bit_stream, 16 ) );
634 for( i_mb = i_mb_previous; i_mb < *pi_mb_address; i_mb++ )
636 /* Skipped macroblock (ISO/IEC 13818-2 7.6.6). */
637 static int pi_dc_dct_reinit[4] = {128,256,512,1024};
638 static f_motion_t pf_motion_skipped[4] = {NULL, vdec_MotionField,
639 vdec_MotionField, vdec_MotionFrame};
641 /* Reset DC predictors (7.2.1). */
642 p_vpar->slice.pi_dc_dct_pred[0] = p_vpar->slice.pi_dc_dct_pred[1]
643 = p_vpar->slice.pi_dc_dct_pred[2]
644 = pi_dc_dct_reinit[p_vpar->picture.i_intra_dc_precision];
646 if( p_vpar->picture.i_coding_type == P_CODING_TYPE )
648 /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
649 bzero( p_vpar->slice.pppi_pmv, 8*sizeof(int) );
652 if( (p_mb = p_vpar->picture.pp_mb[i_mb_base + i_mb] =
653 vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
655 p_vpar->picture.b_error = 1;
656 intf_ErrMsg("vpar error: macroblock list is empty !\n");
660 InitMacroblock( p_vpar, p_mb );
662 /* No IDCT nor AddBlock. */
663 for( i_b = 0; i_b < 12; i_b++ )
665 p_mb->pf_idct[i_b] = vdec_DummyIDCT;
666 p_mb->pf_addb[i_b] = vdec_DummyBlock;
669 /* Motion type is picture structure. */
670 p_mb->pf_motion = pf_motion_skipped[p_vpar->picture.i_structure];
672 /* Set the field we use for motion compensation */
673 p_mb->ppi_field_select[0][0] = p_mb->ppi_field_select[0][1]
674 = ( p_vpar->picture.i_current_structure == BOTTOM_FIELD );
676 //fprintf(stderr, "MB1\n");
677 /* Get a macroblock structure. */
678 if( (p_mb = p_vpar->picture.pp_mb[i_mb_base + *pi_mb_address] =
679 vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
681 p_vpar->picture.b_error = 1;
682 intf_ErrMsg("vpar error: macroblock list is empty !\n");
686 InitMacroblock( p_vpar, p_mb );
688 /* Parse off macroblock_modes structure. */
689 MacroblockModes( p_vpar, p_mb );
691 if( p_vpar->mb.i_mb_type & MB_QUANT )
693 LoadQuantizerScale( p_vpar );
696 if( p_vpar->mb.i_mb_type & MB_MOTION_FORWARD )
698 fprintf( stderr, "motion !\n" );
699 (*p_vpar->sequence.pf_decode_mv)( p_vpar, p_mb, 0 );
702 if( p_vpar->mb.i_mb_type & MB_MOTION_BACKWARD )
704 fprintf( stderr, "motion2 !\n" );
705 (*p_vpar->sequence.pf_decode_mv)( p_vpar, p_mb, 1 );
708 if( p_vpar->picture.b_concealment_mv && (p_vpar->mb.i_mb_type & MB_INTRA) )
710 RemoveBits( &p_vpar->bit_stream, 1 );
713 if( p_vpar->mb.i_mb_type & MB_PATTERN )
715 (*p_vpar->sequence.pf_decode_pattern)( p_vpar );
719 int pi_coded_block_pattern[2] = {0,
720 (1 << (4+p_vpar->sequence.i_chroma_nb_blocks)) - 1};
721 p_vpar->mb.i_coded_block_pattern = pi_coded_block_pattern
722 [p_vpar->mb.i_mb_type & MB_INTRA];
725 pf_addb = ppf_addb_intra[p_vpar->mb.i_mb_type & MB_INTRA];
728 * Effectively decode blocks.
730 //fprintf(stderr, "MB2\n");
731 i_mask = 1 << (3 + p_vpar->sequence.i_chroma_nb_blocks);
734 p_data1 = p_mb->p_picture->p_y
735 + p_mb->i_l_x + p_mb->i_l_y*(p_vpar->sequence.i_width);
737 for( i_b = 0 ; i_b < 4 ; i_b++, i_mask >>= 1 )
739 if( p_vpar->mb.i_coded_block_pattern & i_mask )
741 memset( p_mb->ppi_blocks[i_b], 0, 64*sizeof(elem_t) );
742 (*pppf_decode_block[p_vpar->sequence.b_mpeg2]
743 [p_vpar->mb.i_mb_type & MB_INTRA])
744 ( p_vpar, p_mb, i_b );
746 /* decode_block has already set pf_idct and pi_sparse_pos. */
747 p_mb->pf_addb[i_b] = pf_addb;
749 /* Calculate block coordinates. */
750 p_mb->p_data[i_b] = p_data1
751 + pi_y[p_vpar->mb.b_dct_type][i_b]
752 * p_vpar->sequence.i_width;
756 /* Block not coded, so no IDCT, nor AddBlock */
757 p_mb->pf_addb[i_b] = vdec_DummyBlock;
758 p_mb->pf_idct[i_b] = vdec_DummyIDCT;
761 //i_count == 482 && i_b == 2 )
762 // i_count != *pi_mb_address)
765 fprintf( stderr, "i_count = %d (%d)\n", i_count, i_inc );
766 fprintf( stderr, "%4x", GetBits( &p_vpar->bit_stream, 16 ) );
767 fprintf( stderr, "%4x ", GetBits( &p_vpar->bit_stream, 16 ) );
768 fprintf( stderr, "%4x", GetBits( &p_vpar->bit_stream, 16 ) );
769 fprintf( stderr, "%4x\n", GetBits( &p_vpar->bit_stream, 16 ) );
770 fprintf( stderr, "%4x", GetBits( &p_vpar->bit_stream, 16 ) );
771 fprintf( stderr, "%4x ", GetBits( &p_vpar->bit_stream, 16 ) );
772 fprintf( stderr, "%4x", GetBits( &p_vpar->bit_stream, 16 ) );
773 fprintf( stderr, "%4x\n", GetBits( &p_vpar->bit_stream, 16 ) );
774 fprintf( stderr, "%4x", GetBits( &p_vpar->bit_stream, 16 ) );
775 fprintf( stderr, "%4x ", GetBits( &p_vpar->bit_stream, 16 ) );
776 fprintf( stderr, "%4x", GetBits( &p_vpar->bit_stream, 16 ) );
777 fprintf( stderr, "%4x\n", GetBits( &p_vpar->bit_stream, 16 ) );
778 fprintf( stderr, "%4x", GetBits( &p_vpar->bit_stream, 16 ) );
779 fprintf( stderr, "%4x ", GetBits( &p_vpar->bit_stream, 16 ) );
780 fprintf( stderr, "%4x", GetBits( &p_vpar->bit_stream, 16 ) );
781 fprintf( stderr, "%4x\n", GetBits( &p_vpar->bit_stream, 16 ) );
782 fprintf( stderr, "%4x", GetBits( &p_vpar->bit_stream, 16 ) );
783 fprintf( stderr, "%4x ", GetBits( &p_vpar->bit_stream, 16 ) );
784 fprintf( stderr, "%4x", GetBits( &p_vpar->bit_stream, 16 ) );
785 fprintf( stderr, "%4x\n", GetBits( &p_vpar->bit_stream, 16 ) );
791 p_data1 = p_mb->p_picture->p_u
792 + (p_mb->i_c_x >> pi_chroma_hor[p_vpar->sequence.i_chroma_format])
793 + (p_mb->i_c_y >> pi_chroma_ver[p_vpar->sequence.i_chroma_format])
794 * (p_vpar->sequence.i_chroma_width);
795 p_data2 = p_mb->p_picture->p_v
796 + (p_mb->i_c_x >> pi_chroma_hor[p_vpar->sequence.i_chroma_format])
797 + (p_mb->i_c_y >> pi_chroma_ver[p_vpar->sequence.i_chroma_format])
798 * (p_vpar->sequence.i_chroma_width);
800 for( i_b = 4; i_b < 4 + p_vpar->sequence.i_chroma_nb_blocks;
801 i_b++, i_mask >>= 1 )
803 yuv_data_t * pp_data[2] = {p_data1, p_data2};
805 if( p_vpar->mb.i_coded_block_pattern & i_mask )
807 memset( p_mb->ppi_blocks[i_b], 0, 64*sizeof(elem_t) );
808 (*pppf_decode_block[p_vpar->sequence.b_mpeg2]
809 [p_vpar->mb.i_mb_type & MB_INTRA])
810 ( p_vpar, p_mb, i_b );
812 /* decode_block has already set pf_idct and pi_sparse_pos. */
813 p_mb->pf_addb[i_b] = pf_addb;
815 /* Calculate block coordinates. */
816 p_mb->p_data[i_b] = pp_data[i_b & 1]
817 + pi_y[p_vpar->mb.b_dct_type][i_b]
818 * p_vpar->sequence.i_chroma_width;
822 /* Block not coded, so no IDCT, nor AddBlock */
823 p_mb->pf_addb[i_b] = vdec_DummyBlock;
824 p_mb->pf_idct[i_b] = vdec_DummyIDCT;
828 if( !( p_vpar->mb.i_mb_type & MB_INTRA ) )
830 static int pi_dc_dct_reinit[4] = {128,256,512,1024};
832 /* Reset DC predictors (7.2.1). */
833 p_vpar->slice.pi_dc_dct_pred[0] = p_vpar->slice.pi_dc_dct_pred[1]
834 = p_vpar->slice.pi_dc_dct_pred[2]
835 = pi_dc_dct_reinit[p_vpar->picture.i_intra_dc_precision];
837 else if( !p_vpar->picture.b_concealment_mv )
839 /* Reset MV predictors. */
840 bzero( p_vpar->slice.pppi_pmv, 8*sizeof(int) );
844 // i_count != *pi_mb_address)
847 fprintf( stderr, "i_count = %d (%d)\n", i_count, i_inc );
848 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
849 fprintf( stderr, "%x ", GetBits( &p_vpar->bit_stream, 16 ) );
850 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
851 fprintf( stderr, "%x\n", GetBits( &p_vpar->bit_stream, 16 ) );
852 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
853 fprintf( stderr, "%x ", GetBits( &p_vpar->bit_stream, 16 ) );
854 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
855 fprintf( stderr, "%x\n", GetBits( &p_vpar->bit_stream, 16 ) );
861 /*****************************************************************************
862 * InitMacroblock : Initialize macroblock values
863 *****************************************************************************/
864 static __inline__ void InitMacroblock( vpar_thread_t * p_vpar,
865 macroblock_t * p_mb )
867 static f_chroma_motion_t pf_chroma_motion[4] =
868 { NULL, vdec_Motion420, vdec_Motion422, vdec_Motion444 };
870 p_mb->p_picture = p_vpar->picture.p_picture;
871 p_mb->i_structure = p_vpar->picture.i_structure;
872 p_mb->i_current_structure = p_vpar->picture.i_current_structure;
873 p_mb->i_l_x = p_vpar->mb.i_l_x;
874 p_mb->i_l_y = p_vpar->mb.i_l_y;
875 p_mb->i_c_x = p_vpar->mb.i_c_x;
876 p_mb->i_c_y = p_vpar->mb.i_c_y;
877 p_mb->i_chroma_nb_blocks = p_vpar->sequence.i_chroma_nb_blocks;
878 p_mb->pf_chroma_motion = pf_chroma_motion[p_vpar->sequence.i_chroma_format];
879 p_mb->b_P_coding_type = ( p_vpar->picture.i_coding_type == P_CODING_TYPE );
881 p_mb->p_forward = p_vpar->sequence.p_forward;
882 p_mb->p_backward = p_vpar->sequence.p_backward;
884 p_mb->i_addb_l_stride = p_mb->i_l_stride = p_vpar->picture.i_l_stride;
885 p_mb->i_addb_c_stride = p_mb->i_c_stride = p_vpar->picture.i_c_stride;
887 /* Update macroblock real position. */
888 p_vpar->mb.i_l_x += 16;
889 p_vpar->mb.i_l_y += (p_vpar->mb.i_l_x / p_vpar->sequence.i_width)
890 * (2 - p_vpar->picture.b_frame_structure) * 16;
891 p_vpar->mb.i_l_x %= p_vpar->sequence.i_width;
893 p_vpar->mb.i_c_x += p_vpar->sequence.i_chroma_mb_width;
894 p_vpar->mb.i_c_y += (p_vpar->mb.i_c_x / p_vpar->sequence.i_chroma_width)
895 * (2 - p_vpar->picture.b_frame_structure)
896 * p_vpar->sequence.i_chroma_mb_height;
897 p_vpar->mb.i_c_x %= p_vpar->sequence.i_chroma_width;
900 /*****************************************************************************
901 * MacroblockAddressIncrement : Get the macroblock_address_increment field
902 *****************************************************************************/
903 static __inline__ int MacroblockAddressIncrement( vpar_thread_t * p_vpar )
906 /* Index in the lookup table mb_addr_inc */
907 int i_index = ShowBits( &p_vpar->bit_stream, 11 );
909 /* Test the presence of the escape character */
910 while( i_index == 8 )
912 RemoveBits( &p_vpar->bit_stream, 11 );
914 i_index = ShowBits( &p_vpar->bit_stream, 11 );
917 /* Affect the value from the lookup table */
918 i_addr_inc += p_vpar->pl_mb_addr_inc[i_index].i_value;
920 /* Dump the good number of bits */
921 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_mb_addr_inc[i_index].i_length );
926 /*****************************************************************************
927 * MacroblockModes : Get the macroblock_modes structure
928 *****************************************************************************/
929 static __inline__ void MacroblockModes( vpar_thread_t * p_vpar,
930 macroblock_t * p_mb )
932 static f_motion_t pf_motion[2][4] =
933 { {NULL, vdec_FieldFieldRecon, vdec_Field16x8Recon, vdec_FieldDMVRecon},
934 {NULL, vdec_FrameFieldRecon, vdec_FrameFrameRecon, vdec_FrameDMVRecon} };
935 static int ppi_mv_count[2][4] = { {0, 1, 2, 1}, {0, 2, 1, 1} };
936 static int ppi_mv_format[2][4] = { {0, 1, 1, 1}, {0, 1, 2, 1} };
938 /* Get macroblock_type. */
939 p_vpar->mb.i_mb_type = (p_vpar->picture.pf_macroblock_type)( p_vpar );
940 p_mb->i_mb_type = p_vpar->mb.i_mb_type;
942 //fprintf( stderr, "MB type : %d\n", p_mb->i_mb_type );
944 /* SCALABILITY : warning, we don't know if spatial_temporal_weight_code
945 * has to be dropped, take care if you use scalable streams. */
946 /* RemoveBits( &p_vpar->bit_stream, 2 ); */
948 if( !(p_vpar->mb.i_mb_type & (MB_MOTION_FORWARD | MB_MOTION_BACKWARD)) )
950 /* If mb_type has neither MOTION_FORWARD nor MOTION_BACKWARD, this
951 * is useless, but also harmless. */
952 p_vpar->mb.i_motion_type = MOTION_FRAME;
956 if( p_vpar->picture.i_structure == FRAME_STRUCTURE
957 && p_vpar->picture.b_frame_pred_frame_dct )
959 p_vpar->mb.i_motion_type = MOTION_FRAME;
963 p_vpar->mb.i_motion_type = GetBits( &p_vpar->bit_stream, 2 );
967 if( p_mb->b_P_coding_type && !(p_vpar->mb.i_mb_type & (MB_MOTION_FORWARD|MB_INTRA)) )
969 /* Special No-MC macroblock in P pictures (7.6.3.5). */
970 memset( p_vpar->slice.pppi_pmv, 0, 8*sizeof(int) );
971 memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
973 p_vpar->mb.i_motion_type = MOTION_FRAME;
974 p_mb->ppi_field_select[0][0] = ( p_vpar->picture.i_current_structure == BOTTOM_FIELD );
977 if( p_vpar->mb.i_mb_type & MB_INTRA )
979 /* For the intra macroblocks, we use an empty motion
980 * compensation function */
981 p_mb->pf_motion = vdec_DummyRecon;
985 p_mb->pf_motion = pf_motion[p_vpar->picture.b_frame_structure]
986 [p_vpar->mb.i_motion_type];
988 p_vpar->mb.i_mv_count = ppi_mv_count[p_vpar->picture.b_frame_structure]
989 [p_vpar->mb.i_motion_type];
990 p_vpar->mb.i_mv_format = ppi_mv_format[p_vpar->picture.b_frame_structure]
991 [p_vpar->mb.i_motion_type];
993 p_vpar->mb.b_dct_type = 0;
994 if( (p_vpar->picture.i_structure == FRAME_STRUCTURE) &&
995 (!p_vpar->picture.b_frame_pred_frame_dct) &&
996 (p_vpar->mb.i_mb_type & (MB_PATTERN|MB_INTRA)) )
998 if( (p_vpar->mb.b_dct_type = GetBits( &p_vpar->bit_stream, 1 )) )
1000 /* The DCT is coded on fields. Jump one line between each
1002 p_mb->i_addb_l_stride <<= 1;
1003 p_mb->i_addb_l_stride += 8;
1004 /* With CHROMA_420, the DCT is necessarily frame-coded. */
1005 if( p_vpar->sequence.i_chroma_format != CHROMA_420 )
1007 p_mb->i_addb_c_stride <<= 1;
1008 p_mb->i_addb_c_stride += 8;
1012 p_vpar->mb.b_dmv = p_vpar->mb.i_motion_type == MOTION_DMV;
1015 /*****************************************************************************
1016 * vpar_IMBType : macroblock_type in I pictures
1017 *****************************************************************************/
1018 int vpar_IMBType( vpar_thread_t * p_vpar )
1020 /* Take two bits for testing */
1021 int i_type = ShowBits( &p_vpar->bit_stream, 2 );
1023 /* Lookup table for macroblock_type */
1024 static lookup_t pl_mb_Itype[4] = { {MB_ERROR, 0},
1025 {MB_QUANT|MB_INTRA, 2},
1028 /* Dump the good number of bits */
1029 RemoveBits( &p_vpar->bit_stream, pl_mb_Itype[i_type].i_length );
1030 return pl_mb_Itype[i_type].i_value;
1033 /*****************************************************************************
1034 * vpar_PMBType : macroblock_type in P pictures
1035 *****************************************************************************/
1036 int vpar_PMBType( vpar_thread_t * p_vpar )
1038 /* Testing on 6 bits */
1039 int i_type = ShowBits( &p_vpar->bit_stream, 6 );
1041 /* Dump the good number of bits */
1042 RemoveBits( &p_vpar->bit_stream, p_vpar->ppl_mb_type[0][i_type].i_length );
1044 /* return the value from the lookup table for P type */
1045 return p_vpar->ppl_mb_type[0][i_type].i_value;
1048 /*****************************************************************************
1049 * vpar_BMBType : macroblock_type in B pictures
1050 *****************************************************************************/
1051 int vpar_BMBType( vpar_thread_t * p_vpar )
1053 /* Testing on 6 bits */
1054 int i_type = ShowBits( &p_vpar->bit_stream, 6 );
1056 /* Dump the good number of bits */
1057 RemoveBits( &p_vpar->bit_stream, p_vpar->ppl_mb_type[1][i_type].i_length );
1059 /* return the value from the lookup table for B type */
1060 return p_vpar->ppl_mb_type[1][i_type].i_value;
1063 /*****************************************************************************
1064 * vpar_DMBType : macroblock_type in D pictures
1065 *****************************************************************************/
1066 int vpar_DMBType( vpar_thread_t * p_vpar )
1069 int i_type = GetBits( &p_vpar->bit_stream, 1 );
1072 static int pi_mb_Dtype[2] = { MB_ERROR, 1 };
1074 return pi_mb_Dtype[i_type];
1077 /*****************************************************************************
1078 * vpar_CodedPattern420 : coded_block_pattern with 420 chroma
1079 *****************************************************************************/
1080 int vpar_CodedPattern420( vpar_thread_t * p_vpar )
1082 /* Take the max 9 bits length vlc code for testing */
1083 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1085 /* Trash the good number of bits read in the lookup table */
1086 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_coded_pattern[i_vlc].i_length );
1088 /* return the value from the vlc table */
1089 return p_vpar->pl_coded_pattern[i_vlc].i_value;
1092 /*****************************************************************************
1093 * vpar_CodedPattern422 : coded_block_pattern with 422 chroma
1094 *****************************************************************************/
1095 int vpar_CodedPattern422( vpar_thread_t * p_vpar )
1097 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1099 /* Supplementary 2 bits long code for 422 format */
1100 int i_coded_block_pattern_1;
1102 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_coded_pattern[i_vlc].i_length );
1103 i_coded_block_pattern_1 = GetBits( &p_vpar->bit_stream, 2 );
1105 /* the code is just to be added to the value found in the table */
1106 return p_vpar->pl_coded_pattern[i_vlc].i_value |
1107 (i_coded_block_pattern_1 << 6);
1110 /*****************************************************************************
1111 * vpar_CodedPattern444 : coded_block_pattern with 444 chroma
1112 *****************************************************************************/
1113 int vpar_CodedPattern444( vpar_thread_t * p_vpar )
1115 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1116 int i_coded_block_pattern_2;
1118 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_coded_pattern[i_vlc].i_length );
1119 i_coded_block_pattern_2 = GetBits( &p_vpar->bit_stream, 6 );
1121 return p_vpar->pl_coded_pattern[i_vlc].i_value |
1122 ( i_coded_block_pattern_2 << 6 );
1125 /*****************************************************************************
1126 * vpar_DecodeMPEG1Non : decode MPEG-1 non-intra blocks
1127 *****************************************************************************/
1128 static void vpar_DecodeMPEG1Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
1131 if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
1133 /* Remove end_of_macroblock (always 1, prevents startcode emulation)
1134 * ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
1135 RemoveBits( &p_vpar->bit_stream, 1 );
1139 /*****************************************************************************
1140 * vpar_DecodeMPEG1Intra : decode MPEG-1 intra blocks
1141 *****************************************************************************/
1142 static void vpar_DecodeMPEG1Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
1145 if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
1147 /* Remove end_of_macroblock (always 1, prevents startcode emulation)
1148 * ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
1149 RemoveBits( &p_vpar->bit_stream, 1 );
1153 /*****************************************************************************
1154 * vpar_DecodeMPEG2Non : decode MPEG-2 non-intra blocks
1155 *****************************************************************************/
1156 static void vpar_DecodeMPEG2Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
1171 /* Lookup Table for the chromatic component */
1172 static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
1174 i_cc = pi_cc_index[i_b];
1176 /* Determine whether it is luminance or not (chrominance) */
1177 i_type = ( i_cc + 1 ) >> 1;
1179 /* Give a pointer to the quantization matrices for intra blocks */
1180 ppi_quant[0] = p_vpar->sequence.nonintra_quant.pi_matrix;
1181 ppi_quant[1] = p_vpar->sequence.chroma_nonintra_quant.pi_matrix;
1183 /* Decoding of the AC coefficients */
1187 for( i_parse = 0; ; i_parse++ )
1189 i_code = ShowBits( &p_vpar->bit_stream, 16 );
1190 if( i_code >= 16384 )
1194 i_run = pl_DCT_tab_dc[(i_code>>12)-4].i_run;
1195 i_level = pl_DCT_tab_dc[(i_code>>12)-4].i_level;
1196 i_length = pl_DCT_tab_dc[(i_code>>12)-4].i_length;
1200 i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
1201 i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
1202 i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
1207 i_run = ppl_dct_coef[0][i_code].i_run;
1208 i_length = ppl_dct_coef[0][i_code].i_length;
1209 i_level = ppl_dct_coef[0][i_code].i_level;
1213 RemoveBits( &p_vpar->bit_stream, i_length );
1218 i_run = GetBits( &p_vpar->bit_stream, 6 );
1219 i_level = GetBits( &p_vpar->bit_stream, 12 );
1220 i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
1226 p_mb->pf_idct[i_b] = vdec_SparseIDCT;
1227 p_mb->pi_sparse_pos[i_b] = i_coef;
1231 p_mb->pf_idct[i_b] = vdec_IDCT;
1237 b_sign = GetBits( &p_vpar->bit_stream, 1 );
1243 i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
1244 i_level = ( i_level *
1245 p_vpar->slice.i_quantizer_scale *
1246 ppi_quant[i_type][i_pos] ) >> 5;
1247 p_mb->ppi_blocks[i_b][i_parse] = b_sign ? -i_level : i_level;
1249 fprintf( stderr, "MPEG2 end (%d)\n", i_b );
1254 /*****************************************************************************
1255 * vpar_DecodeMPEG2Intra : decode MPEG-2 intra blocks
1256 *****************************************************************************/
1257 static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
1271 boolean_t b_vlc_intra;
1275 /* Lookup Table for the chromatic component */
1276 static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
1278 i_cc = pi_cc_index[i_b];
1280 /* Determine whether it is luminance or not (chrominance) */
1281 i_type = ( i_cc + 1 ) >> 1;
1283 /* Give a pointer to the quantization matrices for intra blocks */
1284 ppi_quant[0] = p_vpar->sequence.intra_quant.pi_matrix;
1285 ppi_quant[1] = p_vpar->sequence.chroma_intra_quant.pi_matrix;
1288 /* Decoding of the DC intra coefficient */
1289 /* The nb of bits to parse depends on i_type */
1290 i_code = ShowBits( &p_vpar->bit_stream, 9 + i_type );
1292 /* To reduce memory occupation, there are two lookup tables
1293 * See InitDCT above */
1294 i_code5 = i_code >> (4+i_type);
1296 /* Shall we lookup in the first or in the second table ? */
1297 i_select = ( i_code5 == 31 );
1298 /* Offset value for looking in the second table */
1299 i_offset = 0x1f0 + ( i_type * 0x1f0 );
1300 i_pos = ( i_code5 * ( ! i_select ) ) + ( ( i_code - i_offset ) * i_select );
1301 i_dct_dc_size = p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_value;
1304 if( !i_type/*i_b < 4*/ )
1307 i_code = ShowBits(&p_vpar->bit_stream, 5);
1310 i_dct_dc_size = pl_dct_dc_lum_init_table_1[i_code].i_value;
1311 i_length = pl_dct_dc_lum_init_table_1[i_code].i_length;
1312 RemoveBits( &p_vpar->bit_stream, i_length);
1316 i_code = ShowBits(&p_vpar->bit_stream, 9) - 0x1f0;
1317 i_dct_dc_size = pl_dct_dc_lum_init_table_2[i_code].i_value;
1318 i_length = pl_dct_dc_lum_init_table_2[i_code].i_length;
1319 RemoveBits( &p_vpar->bit_stream, i_length);
1325 i_code = ShowBits(&p_vpar->bit_stream, 5);
1329 i_dct_dc_size = pl_dct_dc_chrom_init_table_1[i_code].i_value;
1330 i_length = pl_dct_dc_chrom_init_table_1[i_code].i_length;
1331 RemoveBits(&p_vpar->bit_stream, i_length);
1335 i_code = ShowBits(&p_vpar->bit_stream, 10) - 0x3e0;
1336 i_dct_dc_size = pl_dct_dc_chrom_init_table_2[i_code].i_value;
1337 i_length = pl_dct_dc_chrom_init_table_2[i_code].i_length;
1338 RemoveBits( &p_vpar->bit_stream, i_length);
1341 if (i_dct_dc_size==0)
1345 i_dct_dc_diff = GetBits( &p_vpar->bit_stream, i_dct_dc_size);
1346 if ((i_dct_dc_diff & (1<<(i_dct_dc_size-1)))==0)
1347 i_dct_dc_diff-= (1<<i_dct_dc_size) - 1;
1350 /* Dump the variable length code */
1351 //RemoveBits( &p_vpar->bit_stream,
1352 // p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_length );
1354 /* Read the actual code with the good length */
1355 p_vpar->slice.pi_dc_dct_pred[i_cc] += i_dct_dc_diff;
1357 p_mb->ppi_blocks[i_b][0] = ( p_vpar->slice.pi_dc_dct_pred[i_cc] <<
1358 ( 3 - p_vpar->picture.i_intra_dc_precision ) );
1359 i_nc = ( p_vpar->slice.pi_dc_dct_pred[i_cc] != 0 );
1361 //fprintf( stderr, "coucou\n" );
1362 /* Decoding of the AC coefficients */
1365 b_vlc_intra = p_vpar->picture.b_intra_vlc_format;
1366 for( i_parse = 1; /*i_parse < 64*/; i_parse++ )
1368 i_code = ShowBits( &p_vpar->bit_stream, 16 );
1369 if( i_code >= 16384 )
1373 i_run = pl_DCT_tab0a[(i_code>>8)-4].i_run;
1374 i_level = pl_DCT_tab0a[(i_code>>8)-4].i_level;
1375 i_length = pl_DCT_tab0a[(i_code>>8)-4].i_length;
1376 //fprintf( stderr, "**********> %d, %d, %d *******\n", i_run, i_level, (i_code>>8)-4 );
1380 i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
1381 i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
1382 i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
1387 i_run = ppl_dct_coef[b_vlc_intra][i_code].i_run;
1388 i_length = ppl_dct_coef[b_vlc_intra][i_code].i_length;
1389 i_level = ppl_dct_coef[b_vlc_intra][i_code].i_level;
1395 int intra_vlc_format = b_vlc_intra;
1398 if (code>=16384 && !intra_vlc_format)
1399 tab = pl_DCT_tab_ac[(code>>12)-4];
1400 else if (code>=1024)
1402 if (intra_vlc_format)
1403 tab = pl_DCT_tab0a[(code>>8)-4];
1405 tab = pl_DCT_tab0[(code>>8)-4];
1409 if (intra_vlc_format)
1410 tab = pl_DCT_tab1a[(code>>6)-8];
1412 tab = pl_DCT_tab1[(code>>6)-8];
1415 tab = pl_DCT_tab2[(code>>4)-16];
1417 tab = pl_DCT_tab3[(code>>3)-16];
1419 tab = pl_DCT_tab4[(code>>2)-16];
1421 tab = pl_DCT_tab5[(code>>1)-16];
1423 tab = pl_DCT_tab6[code-16];
1426 fprintf( stderr, "invalid Huffman code in Decode_MPEG2_Intra_Block()\n");
1429 if( (i_run != tab.i_run) || (i_length != tab.i_length) || (i_level != tab.i_level) )
1431 fprintf( stderr, "ET M....... !!!\n" );
1440 RemoveBits( &p_vpar->bit_stream, i_length );
1445 i_run = GetBits( &p_vpar->bit_stream, 6 );
1446 i_level = GetBits( &p_vpar->bit_stream, 12 );
1447 /*p_mb->ppi_blocks[i_b][i_parse] = ( b_sign = ( i_level > 2047 ) )
1448 ? ( -4096 + i_level )
1450 i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
1456 p_mb->pf_idct[i_b] = vdec_SparseIDCT;
1457 p_mb->pi_sparse_pos[i_b] = i_coef;
1461 p_mb->pf_idct[i_b] = vdec_IDCT;
1467 b_sign = GetBits( &p_vpar->bit_stream, 1 );
1468 //p_mb->ppi_blocks[i_b][i_parse] = b_sign ? -i_level : i_level;
1470 // fprintf( stderr, "i_code : %d (%d), run : %d, %d, %d (%4x) ", i_code , b_vlc_intra,
1471 // i_run, i_level, i_parse, ShowBits( &p_vpar->bit_stream, 16 ) );
1473 //fprintf( stderr, "- %4x\n",ShowBits( &p_vpar->bit_stream, 16 ) );
1479 i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
1480 i_level = ( i_level *
1481 p_vpar->slice.i_quantizer_scale *
1482 ppi_quant[i_type][i_pos] ) >> 4;
1483 p_mb->ppi_blocks[i_b][i_parse] = b_sign ? -i_level : i_level;
1486 fprintf( stderr, "MPEG2 end (%d)\n", i_b );