1 /*****************************************************************************
2 * vpar_blocks.c : blocks parsing
4 *****************************************************************************/
6 /*****************************************************************************
8 *****************************************************************************/
19 #include "vlc_thread.h"
22 #include "debug.h" /* ?? temporaire, requis par netlist.h */
25 #include "input_netlist.h"
26 #include "decoder_fifo.h"
28 #include "video_output.h"
30 #include "vdec_idct.h"
31 #include "video_decoder.h"
32 #include "vdec_motion.h"
34 #include "vpar_blocks.h"
35 #include "vpar_headers.h"
36 #include "video_fifo.h"
37 #include "vpar_synchro.h"
38 #include "video_parser.h"
44 typedef void (*f_decode_block_t)( vpar_thread_t *, macroblock_t *, int );
45 static void vpar_DecodeMPEG1Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b );
46 static void vpar_DecodeMPEG1Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b );
47 static void vpar_DecodeMPEG2Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b );
48 static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b );
51 * Initialisation tables
53 /* Table for coded_block_pattern resolution */
54 static lookup_t pl_coded_pattern_init_table[512] =
55 { {MB_ERROR, 0}, {0, 9}, {39, 9}, {27, 9}, {59, 9}, {55, 9}, {47, 9}, {31, 9},
56 {58, 8}, {58, 8}, {54, 8}, {54, 8}, {46, 8}, {46, 8}, {30, 8}, {30, 8},
57 {57, 8}, {57, 8}, {53, 8}, {53, 8}, {45, 8}, {45, 8}, {29, 8}, {29, 8},
58 {38, 8}, {38, 8}, {26, 8}, {26, 8}, {37, 8}, {37, 8}, {25, 8}, {25, 8},
59 {43, 8}, {43, 8}, {23, 8}, {23, 8}, {51, 8}, {51, 8}, {15, 8}, {15, 8},
60 {42, 8}, {42, 8}, {22, 8}, {22, 8}, {50, 8}, {50, 8}, {14, 8}, {14, 8},
61 {41, 8}, {41, 8}, {21, 8}, {21, 8}, {49, 8}, {49, 8}, {13, 8}, {13, 8},
62 {35, 8}, {35, 8}, {19, 8}, {19, 8}, {11, 8}, {11, 8}, {7, 8}, {7, 8},
63 {34, 7}, {34, 7}, {34, 7}, {34, 7}, {18, 7}, {18, 7}, {18, 7}, {18, 7},
64 {10, 7}, {10, 7}, {10, 7}, {10, 7}, {6, 7}, {6, 7}, {6, 7}, {6, 7},
65 {33, 7}, {33, 7}, {33, 7}, {33, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7},
66 {9, 7}, {9, 7}, {9, 7}, {9, 7}, {5, 7}, {5, 7}, {5, 7}, {5, 7},
67 {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6},
68 {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6},
69 {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6},
70 {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6},
71 {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5},
72 {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5},
73 {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5},
74 {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5},
75 {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5},
76 {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5},
77 {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5},
78 {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5},
79 {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5},
80 {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5},
81 {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5},
82 {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5},
83 {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5},
84 {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5},
85 {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5},
86 {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5},
87 {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5},
88 {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5},
89 {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5},
90 {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5},
91 {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5},
92 {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5},
93 {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5},
94 {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5},
95 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
96 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
97 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
98 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
99 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
100 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
101 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
102 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
103 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
104 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
105 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
106 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
107 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
108 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
109 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
110 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
111 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
112 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
113 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
114 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
115 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
116 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
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} };
120 /* Tables for dc DCT coefficients
121 * Tables are cut in two parts to reduce memory occupation
124 /* Table B-12, dct_dc_size_luminance, codes 00xxx ... 11110 */
125 static lookup_t pl_dct_dc_lum_init_table_1[32] =
126 { {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
127 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
128 {0, 3}, {0, 3}, {0, 3}, {0, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3},
129 {4, 3}, {4, 3}, {4, 3}, {4, 3}, {5, 4}, {5, 4}, {6, 5}, {MB_ERROR, 0}
132 /* Table B-12, dct_dc_size_luminance, codes 111110xxx ... 111111111 */
133 static lookup_t pl_dct_dc_lum_init_table_2[32] =
134 { {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6},
135 {8, 7}, {8, 7}, {8, 7}, {8, 7}, {9, 8}, {9, 8}, {10,9}, {11,9},
136 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0},
137 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0},
138 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0},
139 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}
142 /* Table B-13, dct_dc_size_chrominance, codes 00xxx ... 11110 */
143 static lookup_t pl_dct_dc_chrom_init_table_1[32] =
144 { {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2},
145 {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
146 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
147 {3, 3}, {3, 3}, {3, 3}, {3, 3}, {4, 4}, {4, 4}, {5, 5}, {MB_ERROR, 0}
150 /* Table B-13, dct_dc_size_chrominance, codes 111110xxxx ... 1111111111 */
151 static lookup_t pl_dct_dc_chrom_init_table_2[32] =
152 { {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
153 {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
154 {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7},
155 {8, 8}, {8, 8}, {8, 8}, {8, 8}, {9, 9}, {9, 9}, {10,10}, {11,10}
159 * Structure to store the tables B14 & B15
160 * Is constructed from the tables below
162 dct_lookup_t ppl_dct_coef[2][16384];
165 /* Tables for ac DCT coefficients. There are cut in many parts to save space */
166 /* Table B-14, DCT coefficients table zero,
167 * codes 0100 ... 1xxx (used for first (DC) coefficient)
169 static dct_lookup_t pl_DCT_tab_dc[12] =
171 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
172 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1},
173 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1}
176 /* Table B-14, DCT coefficients table zero,
177 * codes 0100 ... 1xxx (used for all other coefficients)
179 static dct_lookup_t pl_DCT_tab_ac[12] =
181 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
182 {DCT_EOB,0,2}, {DCT_EOB,0,2}, {DCT_EOB,0,2}, {DCT_EOB,0,2}, /* EOB */
183 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2}
186 /* Table B-14, DCT coefficients table zero,
187 * codes 000001xx ... 00111xxx
189 static dct_lookup_t pl_DCT_tab0[60] =
191 {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6},
193 {2,2,7}, {2,2,7}, {9,1,7}, {9,1,7},
194 {0,4,7}, {0,4,7}, {8,1,7}, {8,1,7},
195 {7,1,6}, {7,1,6}, {7,1,6}, {7,1,6},
196 {6,1,6}, {6,1,6}, {6,1,6}, {6,1,6},
197 {1,2,6}, {1,2,6}, {1,2,6}, {1,2,6},
198 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
199 {13,1,8}, {0,6,8}, {12,1,8}, {11,1,8},
200 {3,2,8}, {1,3,8}, {0,5,8}, {10,1,8},
201 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
202 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
203 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
204 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
205 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
206 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5}
209 /* Table B-15, DCT coefficients table one,
210 * codes 000001xx ... 11111111
212 static dct_lookup_t pl_DCT_tab0a[252] =
214 {65,0,6}, {65,0,6}, {65,0,6}, {65,0,6}, /* Escape */
215 {7,1,7}, {7,1,7}, {8,1,7}, {8,1,7},
216 {6,1,7}, {6,1,7}, {2,2,7}, {2,2,7},
217 {0,7,6}, {0,7,6}, {0,7,6}, {0,7,6},
218 {0,6,6}, {0,6,6}, {0,6,6}, {0,6,6},
219 {4,1,6}, {4,1,6}, {4,1,6}, {4,1,6},
220 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
221 {1,5,8}, {11,1,8}, {0,11,8}, {0,10,8},
222 {13,1,8}, {12,1,8}, {3,2,8}, {1,4,8},
223 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
224 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
225 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
226 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
227 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
228 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
229 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
230 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
231 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
232 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
233 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
234 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
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 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4}, /* EOB */
238 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
239 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
240 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
241 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
242 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
243 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
244 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
245 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
246 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
247 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
248 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
249 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
250 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
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 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
262 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
263 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
264 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
265 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
266 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
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 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
270 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
271 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
272 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
273 {9,1,7}, {9,1,7}, {1,3,7}, {1,3,7},
274 {10,1,7}, {10,1,7}, {0,8,7}, {0,8,7},
275 {0,9,7}, {0,9,7}, {0,12,8}, {0,13,8},
276 {2,3,8}, {4,2,8}, {0,14,8}, {0,15,8}
279 /* Table B-14, DCT coefficients table zero,
280 * codes 0000001000 ... 0000001111
282 static dct_lookup_t pl_DCT_tab1[8] =
284 {16,1,10}, {5,2,10}, {0,7,10}, {2,3,10},
285 {1,4,10}, {15,1,10}, {14,1,10}, {4,2,10}
288 /* Table B-15, DCT coefficients table one,
289 * codes 000000100x ... 000000111x
291 static dct_lookup_t pl_DCT_tab1a[8] =
293 {5,2,9}, {5,2,9}, {14,1,9}, {14,1,9},
294 {2,4,10}, {16,1,10}, {15,1,9}, {15,1,9}
297 /* Table B-14/15, DCT coefficients table zero / one,
298 * codes 000000010000 ... 000000011111
300 static dct_lookup_t pl_DCT_tab2[16] =
302 {0,11,12}, {8,2,12}, {4,3,12}, {0,10,12},
303 {2,4,12}, {7,2,12}, {21,1,12}, {20,1,12},
304 {0,9,12}, {19,1,12}, {18,1,12}, {1,5,12},
305 {3,3,12}, {0,8,12}, {6,2,12}, {17,1,12}
308 /* Table B-14/15, DCT coefficients table zero / one,
309 * codes 0000000010000 ... 0000000011111
311 static dct_lookup_t pl_DCT_tab3[16] =
313 {10,2,13}, {9,2,13}, {5,3,13}, {3,4,13},
314 {2,5,13}, {1,7,13}, {1,6,13}, {0,15,13},
315 {0,14,13}, {0,13,13}, {0,12,13}, {26,1,13},
316 {25,1,13}, {24,1,13}, {23,1,13}, {22,1,13}
319 /* Table B-14/15, DCT coefficients table zero / one,
320 * codes 00000000010000 ... 00000000011111
322 static dct_lookup_t pl_DCT_tab4[16] =
324 {0,31,14}, {0,30,14}, {0,29,14}, {0,28,14},
325 {0,27,14}, {0,26,14}, {0,25,14}, {0,24,14},
326 {0,23,14}, {0,22,14}, {0,21,14}, {0,20,14},
327 {0,19,14}, {0,18,14}, {0,17,14}, {0,16,14}
330 /* Table B-14/15, DCT coefficients table zero / one,
331 * codes 000000000010000 ... 000000000011111
333 static dct_lookup_t pl_DCT_tab5[16] =
335 {0,40,15}, {0,39,15}, {0,38,15}, {0,37,15},
336 {0,36,15}, {0,35,15}, {0,34,15}, {0,33,15},
337 {0,32,15}, {1,14,15}, {1,13,15}, {1,12,15},
338 {1,11,15}, {1,10,15}, {1,9,15}, {1,8,15}
341 /* Table B-14/15, DCT coefficients table zero / one,
342 * codes 0000000000010000 ... 0000000000011111
344 static dct_lookup_t pl_DCT_tab6[16] =
346 {1,18,16}, {1,17,16}, {1,16,16}, {1,15,16},
347 {6,3,16}, {16,2,16}, {15,2,16}, {14,2,16},
348 {13,2,16}, {12,2,16}, {11,2,16}, {31,1,16},
349 {30,1,16}, {29,1,16}, {28,1,16}, {27,1,16}
352 * Initialization of lookup tables
355 /*****************************************************************************
356 * vpar_InitCrop : Initialize the crop table for saturation
357 * (ISO/IEC 13818-2 section 7.4.3)
358 *****************************************************************************/
359 #if defined(MPEG2_COMPLIANT) && !defined(VDEC_DFT)
360 void vpar_InitCrop( vpar_thread_t * p_vpar )
364 p_vpar->pi_crop = p_vpar->pi_crop_buf + 4096;
366 for( i_dummy = -4096; i_dummy < -2048; i_dummy++ )
368 p_vpar->pi_crop[i_dummy] = -2048;
370 for( ; i_dummy < 2047; i_dummy++ )
372 p_vpar->pi_crop[i_dummy] = i_dummy;
374 for( ; i_dummy < 4095; i_dummy++ )
376 p_vpar->pi_crop[i_dummy] = 2047;
381 /*****************************************************************************
382 * InitMbAddrInc : Initialize the lookup table for mb_addr_inc
383 *****************************************************************************/
385 /* Function for filling up the lookup table for mb_addr_inc */
386 static void __inline__ FillMbAddrIncTable( vpar_thread_t * p_vpar,
387 int i_start, int i_end, int i_step,
388 int * pi_value, int i_length )
391 for( i_pos = i_start ; i_pos < i_end ; i_pos += i_step )
393 for( i_offset = 0 ; i_offset < i_step ; i_offset ++ )
395 p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_value = * pi_value;
396 p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_length = i_length;
402 /* Function that initialize the table using the last one */
403 void vpar_InitMbAddrInc( vpar_thread_t * p_vpar )
408 for( i_dummy = 0 ; i_dummy < 8 ; i_dummy++ )
410 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
411 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
414 p_vpar->pl_mb_addr_inc[8].i_value = MB_ADDRINC_ESCAPE;
415 p_vpar->pl_mb_addr_inc[8].i_length = 11;
417 for( i_dummy = 9 ; i_dummy < 15 ; 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[15].i_value = MB_ADDRINC_STUFFING;
424 p_vpar->pl_mb_addr_inc[15].i_length = 11;
426 for( i_dummy = 16; i_dummy < 24; 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;
434 FillMbAddrIncTable( p_vpar, 24, 36, 1, &i_value, 11 );
435 FillMbAddrIncTable( p_vpar, 36, 48, 2, &i_value, 10 );
436 FillMbAddrIncTable( p_vpar, 48, 96, 8, &i_value, 8 );
437 FillMbAddrIncTable( p_vpar, 96, 128, 16, &i_value, 7 );
438 FillMbAddrIncTable( p_vpar, 128, 256, 64, &i_value, 5 );
439 FillMbAddrIncTable( p_vpar, 256, 512, 128, &i_value, 4 );
440 FillMbAddrIncTable( p_vpar, 512, 1024, 256, &i_value, 3 );
441 FillMbAddrIncTable( p_vpar, 1024, 2048, 1024, &i_value, 1 );
444 /*****************************************************************************
445 * Init*MBType : Initialize lookup table for the Macroblock type
446 *****************************************************************************/
448 /* Fonction for filling up the tables */
449 static void __inline__ FillMBType( vpar_thread_t * p_vpar,
458 for( i_dummy = i_start ; i_dummy < i_end ; i_dummy++ )
460 p_vpar->ppl_mb_type[i_mb_type][i_dummy].i_value = i_value;
461 p_vpar->ppl_mb_type[i_mb_type][i_dummy].i_length = i_length;
465 /* Fonction that fills the table for P MB_Type */
466 void vpar_InitPMBType( vpar_thread_t * p_vpar )
468 FillMBType( p_vpar, 0, 32, 64, MB_MOTION_FORWARD|MB_PATTERN, 1 );
469 FillMBType( p_vpar, 0, 16, 32, MB_PATTERN, 2 );
470 FillMBType( p_vpar, 0, 8, 16, MB_MOTION_FORWARD, 3 );
471 FillMBType( p_vpar, 0, 6, 8, MB_INTRA, 5 );
472 FillMBType( p_vpar, 0, 4, 6, MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN, 5 );
473 FillMBType( p_vpar, 0, 2, 4, MB_QUANT|MB_PATTERN, 5 );
474 p_vpar->ppl_mb_type[0][1].i_value = MB_QUANT|MB_INTRA;
475 p_vpar->ppl_mb_type[0][1].i_length = 6;
476 p_vpar->ppl_mb_type[0][0].i_value = MB_ERROR;
477 p_vpar->ppl_mb_type[0][0].i_length = 0;
480 /* Fonction that fills the table for B MB_Type */
481 void vpar_InitBMBType( vpar_thread_t * p_vpar )
483 FillMBType( p_vpar, 1, 48, 64, MB_MOTION_FORWARD
484 |MB_MOTION_BACKWARD|MB_PATTERN, 2 );
485 FillMBType( p_vpar, 1, 32, 48, MB_MOTION_FORWARD|MB_MOTION_BACKWARD, 2 );
486 FillMBType( p_vpar, 1, 24, 32, MB_MOTION_BACKWARD|MB_PATTERN, 3 );
487 FillMBType( p_vpar, 1, 16, 24, MB_MOTION_BACKWARD, 3 );
488 FillMBType( p_vpar, 1, 12, 16, MB_MOTION_FORWARD|MB_PATTERN, 4 );
489 FillMBType( p_vpar, 1, 8, 12, MB_MOTION_FORWARD, 4 );
490 FillMBType( p_vpar, 1, 6, 8, MB_INTRA, 5 );
491 FillMBType( p_vpar, 1, 4, 6, MB_QUANT|MB_MOTION_FORWARD
492 |MB_MOTION_BACKWARD|MB_PATTERN, 5 );
493 p_vpar->ppl_mb_type[1][3].i_value = MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN;
494 p_vpar->ppl_mb_type[1][3].i_length = 6;
495 p_vpar->ppl_mb_type[1][2].i_value = MB_QUANT|MB_MOTION_BACKWARD|MB_PATTERN;
496 p_vpar->ppl_mb_type[1][2].i_length = 6;
497 p_vpar->ppl_mb_type[1][1].i_value = MB_QUANT|MB_INTRA;
498 p_vpar->ppl_mb_type[1][1].i_length = 6;
499 p_vpar->ppl_mb_type[1][0].i_value =MB_ERROR;
500 p_vpar->ppl_mb_type[1][0].i_length = 0;
503 /*****************************************************************************
504 * InitCodedPattern : Initialize the lookup table for decoding
505 * coded block pattern
506 *****************************************************************************/
507 void vpar_InitCodedPattern( vpar_thread_t * p_vpar )
509 p_vpar->pl_coded_pattern = (lookup_t*) pl_coded_pattern_init_table;
512 /*****************************************************************************
513 * InitDCT : Initialize tables giving the length of the dct coefficient
515 *****************************************************************************/
517 /* First fonction for filling the table */
518 static void __inline__ FillDCTTable( dct_lookup_t * p_tab_dest, dct_lookup_t * p_tab_src,
519 int i_step, int i_nb_elem, int i_offset )
521 int i_dummy, i_dummy2;
523 for( i_dummy=0 ; i_dummy < i_nb_elem ; i_dummy++ )
525 for( i_dummy2=0 ; i_dummy2 < i_step ; i_dummy2++ )
527 p_tab_dest[(i_dummy+i_offset)*i_step+i_dummy2] = p_tab_src[i_dummy];
533 /* Fonction that actually fills the table or create the pointers */
534 void vpar_InitDCTTables( vpar_thread_t * p_vpar )
536 /* Tables are cut in two parts to reduce memory occupation */
537 p_vpar->pppl_dct_dc_size[0][0] = pl_dct_dc_lum_init_table_1;
538 p_vpar->pppl_dct_dc_size[0][1] = pl_dct_dc_lum_init_table_2;
539 p_vpar->pppl_dct_dc_size[1][0] = pl_dct_dc_chrom_init_table_1;
540 p_vpar->pppl_dct_dc_size[1][1] = pl_dct_dc_chrom_init_table_2;
542 memset( ppl_dct_coef[0], MB_ERROR, 16 );
543 memset( ppl_dct_coef[1], MB_ERROR, 16 );
545 /* For table B14 & B15, we have a pointer to tables */
546 /* We fill the table thanks to the fonction defined above */
547 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab0, 256, 60, 4 );
548 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab1, 64, 8, 8 );
549 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab2, 16, 16, 16 );
550 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab3, 8, 16, 16 );
551 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab4, 4, 16, 16 );
552 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab5, 2, 16, 16 );
553 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab6, 1, 16, 16 );
555 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab0a, 256, 60, 4 );
556 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab1a, 64, 8, 8 );
557 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab2, 16, 16, 16 );
558 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab3, 8, 16, 16 );
559 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab4, 4, 16, 16 );
560 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab5, 2, 16, 16 );
561 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab6, 1, 16, 16 );
565 * Macroblock parsing functions
568 /*****************************************************************************
569 * InitMacroblock : Initialize macroblock values
570 *****************************************************************************/
571 static __inline__ void InitMacroblock( vpar_thread_t * p_vpar,
572 macroblock_t * p_mb )
574 static f_chroma_motion_t pf_chroma_motion[4] =
575 { NULL, vdec_Motion420, vdec_Motion422, vdec_Motion444 };
577 p_mb->p_picture = p_vpar->picture.p_picture;
578 p_mb->i_structure = p_vpar->picture.i_structure;
579 p_mb->i_current_structure = p_vpar->picture.i_current_structure;
580 p_mb->b_top_field_first = p_vpar->picture.b_top_field_first;
581 p_mb->i_l_x = p_vpar->mb.i_l_x;
582 p_mb->i_motion_l_y = p_mb->i_l_y = p_vpar->mb.i_l_y;
583 p_mb->i_c_x = p_vpar->mb.i_c_x;
584 p_mb->i_motion_c_y = p_mb->i_c_y = p_vpar->mb.i_c_y;
585 p_mb->i_chroma_nb_blocks = p_vpar->sequence.i_chroma_nb_blocks;
586 p_mb->pf_chroma_motion = pf_chroma_motion[p_vpar->sequence.i_chroma_format];
587 p_mb->b_P_coding_type = ( p_vpar->picture.i_coding_type == P_CODING_TYPE );
589 if( (p_vpar->picture.i_coding_type == P_CODING_TYPE) ||
590 (p_vpar->picture.i_coding_type == B_CODING_TYPE) )
591 p_mb->p_forward = p_vpar->sequence.p_forward;
593 p_mb->p_forward = NULL;
594 if( p_vpar->picture.i_coding_type == B_CODING_TYPE )
595 p_mb->p_backward = p_vpar->sequence.p_backward;
597 p_mb->p_backward = NULL;
599 p_mb->i_addb_l_stride = (p_mb->i_l_stride = p_vpar->picture.i_l_stride) - 8;
600 p_mb->i_addb_c_stride = (p_mb->i_c_stride = p_vpar->picture.i_c_stride) - 8;
602 /* Update macroblock real position. */
603 p_vpar->mb.i_l_x += 16;
604 p_vpar->mb.i_l_y += (p_vpar->mb.i_l_x / p_vpar->sequence.i_width)
605 * (2 - p_vpar->picture.b_frame_structure) * 16;
606 p_vpar->mb.i_l_x %= p_vpar->sequence.i_width;
608 p_vpar->mb.i_c_x += p_vpar->sequence.i_chroma_mb_width;
609 p_vpar->mb.i_c_y += (p_vpar->mb.i_c_x / p_vpar->sequence.i_chroma_width)
610 * (2 - p_vpar->picture.b_frame_structure)
611 * p_vpar->sequence.i_chroma_mb_height;
612 p_vpar->mb.i_c_x %= p_vpar->sequence.i_chroma_width;
613 if( (p_mb->b_motion_field = p_vpar->picture.b_motion_field) )
615 p_mb->i_motion_l_y--;
616 p_mb->i_motion_c_y--;
620 /*****************************************************************************
621 * MacroblockAddressIncrement : Get the macroblock_address_increment field
622 *****************************************************************************/
623 static __inline__ int MacroblockAddressIncrement( vpar_thread_t * p_vpar )
626 /* Index in the lookup table mb_addr_inc */
627 int i_index = ShowBits( &p_vpar->bit_stream, 11 );
629 /* Test the presence of the escape character */
630 while( i_index == 8 )
632 RemoveBits( &p_vpar->bit_stream, 11 );
634 i_index = ShowBits( &p_vpar->bit_stream, 11 );
637 /* Affect the value from the lookup table */
638 i_addr_inc += p_vpar->pl_mb_addr_inc[i_index].i_value;
640 /* Dump the good number of bits */
641 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_mb_addr_inc[i_index].i_length );
646 /*****************************************************************************
647 * MacroblockModes : Get the macroblock_modes structure
648 *****************************************************************************/
649 static __inline__ void MacroblockModes( vpar_thread_t * p_vpar,
650 macroblock_t * p_mb )
652 static f_motion_t pf_motion[2][4] =
653 { {NULL, vdec_MotionFieldField, vdec_MotionField16x8, vdec_MotionFieldDMV},
654 {NULL, vdec_MotionFrameField, vdec_MotionFrameFrame, vdec_MotionFrameDMV} };
655 static int ppi_mv_count[2][4] = { {0, 1, 2, 1}, {0, 2, 1, 1} };
656 static int ppi_mv_format[2][4] = { {0, 1, 1, 1}, {0, 1, 2, 1} };
658 /* Get macroblock_type. */
659 p_vpar->mb.i_mb_type = (p_vpar->picture.pf_macroblock_type)( p_vpar );
660 p_mb->i_mb_type = p_vpar->mb.i_mb_type;
662 /* SCALABILITY : warning, we don't know if spatial_temporal_weight_code
663 * has to be dropped, take care if you use scalable streams. */
664 /* RemoveBits( &p_vpar->bit_stream, 2 ); */
666 if( !(p_vpar->mb.i_mb_type & (MB_MOTION_FORWARD | MB_MOTION_BACKWARD)) )
668 /* If mb_type has neither MOTION_FORWARD nor MOTION_BACKWARD, this
669 * is useless, but also harmless. */
670 p_vpar->mb.i_motion_type = MOTION_FRAME;
674 if( p_vpar->picture.i_structure == FRAME_STRUCTURE
675 && p_vpar->picture.b_frame_pred_frame_dct )
677 p_vpar->mb.i_motion_type = MOTION_FRAME;
681 p_vpar->mb.i_motion_type = GetBits( &p_vpar->bit_stream, 2 );
685 if( p_mb->b_P_coding_type && !(p_vpar->mb.i_mb_type & (MB_MOTION_FORWARD|MB_INTRA)) )
687 /* Special No-MC macroblock in P pictures (7.6.3.5). */
688 memset( p_vpar->slice.pppi_pmv, 0, 8*sizeof(int) );
689 memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
690 p_vpar->mb.i_motion_type = MOTION_FRAME;
691 p_mb->ppi_field_select[0][0] = ( p_vpar->picture.i_current_structure == BOTTOM_FIELD );
694 if( p_vpar->mb.i_mb_type & MB_INTRA )
696 /* For the intra macroblocks, we use an empty motion
697 * compensation function */
698 p_mb->pf_motion = vdec_MotionDummy;
702 p_mb->pf_motion = pf_motion[p_vpar->picture.b_frame_structure]
703 [p_vpar->mb.i_motion_type];
706 p_vpar->mb.i_mv_count = ppi_mv_count[p_vpar->picture.b_frame_structure]
707 [p_vpar->mb.i_motion_type];
708 p_vpar->mb.i_mv_format = ppi_mv_format[p_vpar->picture.b_frame_structure]
709 [p_vpar->mb.i_motion_type];
712 p_vpar->mb.b_dct_type = 0;
713 if( (p_vpar->picture.i_structure == FRAME_STRUCTURE) &&
714 (!p_vpar->picture.b_frame_pred_frame_dct) &&
715 (p_vpar->mb.i_mb_type & (MB_PATTERN|MB_INTRA)) )
717 if( (p_vpar->mb.b_dct_type = GetBits( &p_vpar->bit_stream, 1 )) )
719 /* The DCT is coded on fields. Jump one line between each
721 p_mb->i_addb_l_stride <<= 1;
722 p_mb->i_addb_l_stride += 8;
723 /* With CHROMA_420, the DCT is necessarily frame-coded. */
724 if( p_vpar->sequence.i_chroma_format != CHROMA_420 )
726 p_mb->i_addb_c_stride <<= 1;
727 p_mb->i_addb_c_stride += 8;
731 p_vpar->mb.b_dmv = p_vpar->mb.i_motion_type == MOTION_DMV;
734 /*****************************************************************************
735 * vpar_ParseMacroblock : Parse the next macroblock
736 *****************************************************************************/
737 void vpar_ParseMacroblock( vpar_thread_t * p_vpar, int * pi_mb_address,
738 int i_mb_previous, int i_mb_base )
740 static f_addb_t ppf_addb_intra[2] = {vdec_AddBlock, vdec_CopyBlock};
741 static f_decode_block_t pppf_decode_block[2][2] =
742 { {vpar_DecodeMPEG1Non, vpar_DecodeMPEG1Intra},
743 {vpar_DecodeMPEG2Non, vpar_DecodeMPEG2Intra} };
744 static int pi_x[12] = {0,8,0,8,0,0,0,0,8,8,8,8};
745 static int pi_y[2][12] = { {0,0,8,8,0,0,8,8,0,0,8,8},
746 {0,0,1,1,0,0,1,1,0,0,1,1} };
748 int i_mb, i_b, i_mask;
751 yuv_data_t * p_data1;
752 yuv_data_t * p_data2;
754 /************* DEBUG *************/
759 i_inc = MacroblockAddressIncrement( p_vpar );
760 *pi_mb_address += i_inc;
761 //*pi_mb_address += MacroblockAddressIncrement( p_vpar );
763 for( i_mb = i_mb_previous + 1; i_mb < *pi_mb_address; i_mb++ )
765 /* Skipped macroblock (ISO/IEC 13818-2 7.6.6). */
766 static int pi_dc_dct_reinit[4] = {128,256,512,1024};
767 static f_motion_t pf_motion_skipped[4] = {NULL, vdec_MotionFieldField,
768 vdec_MotionFieldField, vdec_MotionFrameFrame};
770 /* Reset DC predictors (7.2.1). */
771 p_vpar->slice.pi_dc_dct_pred[0] = p_vpar->slice.pi_dc_dct_pred[1]
772 = p_vpar->slice.pi_dc_dct_pred[2]
773 = pi_dc_dct_reinit[p_vpar->picture.i_intra_dc_precision];
775 if( p_vpar->picture.i_coding_type == P_CODING_TYPE )
777 /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
778 memset( p_vpar->slice.pppi_pmv, 0, 8*sizeof(int) );
781 if( (p_mb = p_vpar->picture.pp_mb[i_mb_base + i_mb] =
782 vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
784 p_vpar->picture.b_error = 1;
785 intf_ErrMsg("vpar error: macroblock list is empty !\n");
789 InitMacroblock( p_vpar, p_mb );
791 /* No IDCT nor AddBlock. */
792 for( i_b = 0; i_b < 12; i_b++ )
794 p_mb->pf_idct[i_b] = vdec_DummyIDCT;
795 p_mb->pf_addb[i_b] = vdec_DummyBlock;
798 /* Motion type is picture structure. */
799 p_mb->pf_motion = pf_motion_skipped[p_vpar->picture.i_structure];
800 p_mb->i_mb_type = MB_MOTION_FORWARD;
801 memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
803 /* Set the field we use for motion compensation */
804 p_mb->ppi_field_select[0][0] = p_mb->ppi_field_select[0][1]
805 = ( p_vpar->picture.i_current_structure == BOTTOM_FIELD );
808 /* Get a macroblock structure. */
809 if( (p_mb = p_vpar->picture.pp_mb[i_mb_base + *pi_mb_address] =
810 vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
812 p_vpar->picture.b_error = 1;
813 intf_ErrMsg("vpar error: macroblock list is empty !\n");
817 InitMacroblock( p_vpar, p_mb );
819 /* Parse off macroblock_modes structure. */
820 MacroblockModes( p_vpar, p_mb );
822 if( p_vpar->mb.i_mb_type & MB_QUANT )
824 LoadQuantizerScale( p_vpar );
827 if( p_vpar->mb.i_mb_type & MB_MOTION_FORWARD )
829 //fprintf( stderr, "motion !\n" );
830 (*p_vpar->sequence.pf_decode_mv)( p_vpar, p_mb, 0 );
833 if( p_vpar->mb.i_mb_type & MB_MOTION_BACKWARD )
835 //fprintf( stderr, "motion2 !\n" );
836 (*p_vpar->sequence.pf_decode_mv)( p_vpar, p_mb, 1 );
839 if( p_vpar->picture.b_concealment_mv && (p_vpar->mb.i_mb_type & MB_INTRA) )
841 RemoveBits( &p_vpar->bit_stream, 1 );
845 // i_count != *pi_mb_address)
846 //p_vpar->picture.i_coding_type == P_CODING_TYPE )
848 fprintf( stderr, "i_count = %d (%d)\n", i_count, p_vpar->mb.i_mb_type );
849 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
850 fprintf( stderr, "%x ", GetBits( &p_vpar->bit_stream, 16 ) );
851 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
852 fprintf( stderr, "%x\n", 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", GetBits( &p_vpar->bit_stream, 16 ) );
856 fprintf( stderr, "%x\n", GetBits( &p_vpar->bit_stream, 16 ) );
860 if( p_vpar->mb.i_mb_type & MB_PATTERN )
862 p_vpar->mb.i_coded_block_pattern = (*p_vpar->sequence.pf_decode_pattern)( p_vpar );
863 //fprintf( stderr, "pattern : %d\n", p_vpar->mb.i_coded_block_pattern );
867 int pi_coded_block_pattern[2] = {0,
868 (1 << (4+p_vpar->sequence.i_chroma_nb_blocks)) - 1};
869 p_vpar->mb.i_coded_block_pattern = pi_coded_block_pattern
870 [p_vpar->mb.i_mb_type & MB_INTRA];
872 pf_addb = ppf_addb_intra[p_vpar->mb.i_mb_type & MB_INTRA];
875 * Effectively decode blocks.
878 i_mask = 1 << (3 + p_vpar->sequence.i_chroma_nb_blocks);
881 p_data1 = p_mb->p_picture->p_y
882 + p_mb->i_l_x + p_mb->i_l_y*(p_vpar->sequence.i_width);
884 for( i_b = 0 ; i_b < 4 ; i_b++, i_mask >>= 1 )
886 if( p_vpar->mb.i_coded_block_pattern & i_mask )
888 memset( p_mb->ppi_blocks[i_b], 0, 64*sizeof(dctelem_t) );
889 (*pppf_decode_block[p_vpar->sequence.b_mpeg2]
890 [p_vpar->mb.i_mb_type & MB_INTRA])
891 ( p_vpar, p_mb, i_b );
893 /* decode_block has already set pf_idct and pi_sparse_pos. */
894 p_mb->pf_addb[i_b] = pf_addb;
896 /* Calculate block coordinates. */
897 p_mb->p_data[i_b] = p_data1
898 + pi_y[p_vpar->mb.b_dct_type][i_b]
899 * p_vpar->sequence.i_width
904 /* Block not coded, so no IDCT, nor AddBlock */
905 p_mb->pf_addb[i_b] = vdec_DummyBlock;
906 p_mb->pf_idct[i_b] = vdec_DummyIDCT;
911 p_data1 = p_mb->p_picture->p_u
914 * (p_vpar->sequence.i_chroma_width);
915 p_data2 = p_mb->p_picture->p_v
918 * (p_vpar->sequence.i_chroma_width);
920 for( i_b = 4; i_b < 4 + p_vpar->sequence.i_chroma_nb_blocks;
921 i_b++, i_mask >>= 1 )
923 yuv_data_t * pp_data[2] = {p_data1, p_data2};
925 if( p_vpar->mb.i_coded_block_pattern & i_mask )
927 memset( p_mb->ppi_blocks[i_b], 0, 64*sizeof(dctelem_t) );
928 (*pppf_decode_block[p_vpar->sequence.b_mpeg2]
929 [p_vpar->mb.i_mb_type & MB_INTRA])
930 ( p_vpar, p_mb, i_b );
932 /* decode_block has already set pf_idct and pi_sparse_pos. */
933 p_mb->pf_addb[i_b] = pf_addb;
935 /* Calculate block coordinates. */
936 p_mb->p_data[i_b] = pp_data[i_b & 1]
937 + pi_y[p_vpar->mb.b_dct_type][i_b]
938 * p_vpar->sequence.i_chroma_width
943 /* Block not coded, so no IDCT, nor AddBlock */
944 p_mb->pf_addb[i_b] = vdec_DummyBlock;
945 p_mb->pf_idct[i_b] = vdec_DummyIDCT;
949 if( !( p_vpar->mb.i_mb_type & MB_INTRA ) )
951 static int pi_dc_dct_reinit[4] = {128,256,512,1024};
953 /* Reset DC predictors (7.2.1). */
954 p_vpar->slice.pi_dc_dct_pred[0] = p_vpar->slice.pi_dc_dct_pred[1]
955 = p_vpar->slice.pi_dc_dct_pred[2]
956 = pi_dc_dct_reinit[p_vpar->picture.i_intra_dc_precision];
958 else if( !p_vpar->picture.b_concealment_mv )
960 /* Reset MV predictors. */
961 memset( p_vpar->slice.pppi_pmv, 0, 8*sizeof(int) );
964 if( p_mb->b_P_coding_type && !(p_vpar->mb.i_mb_type & (MB_MOTION_FORWARD|MB_INTRA)) )
966 p_mb->i_mb_type |= MB_MOTION_FORWARD;
969 if( p_vpar->picture.i_coding_type != I_CODING_TYPE )//!(p_mb->b_P_coding_type & MB_INTRA) )
971 p_mb->i_mb_type |= MB_MOTION_FORWARD;
976 // i_count != *pi_mb_address)
979 fprintf( stderr, "i_count = %d (%d)\n", i_count, i_inc );
980 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
981 fprintf( stderr, "%x ", GetBits( &p_vpar->bit_stream, 16 ) );
982 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
983 fprintf( stderr, "%x\n", GetBits( &p_vpar->bit_stream, 16 ) );
984 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
985 fprintf( stderr, "%x ", GetBits( &p_vpar->bit_stream, 16 ) );
986 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
987 fprintf( stderr, "%x\n", GetBits( &p_vpar->bit_stream, 16 ) );
992 /*****************************************************************************
993 * vpar_IMBType : macroblock_type in I pictures
994 *****************************************************************************/
995 int vpar_IMBType( vpar_thread_t * p_vpar )
997 /* Take two bits for testing */
998 int i_type = ShowBits( &p_vpar->bit_stream, 2 );
1000 /* Lookup table for macroblock_type */
1001 static lookup_t pl_mb_Itype[4] = { {MB_ERROR, 0},
1002 {MB_QUANT|MB_INTRA, 2},
1005 /* Dump the good number of bits */
1006 RemoveBits( &p_vpar->bit_stream, pl_mb_Itype[i_type].i_length );
1007 return pl_mb_Itype[i_type].i_value;
1010 /*****************************************************************************
1011 * vpar_PMBType : macroblock_type in P pictures
1012 *****************************************************************************/
1013 int vpar_PMBType( vpar_thread_t * p_vpar )
1015 /* Testing on 6 bits */
1016 int i_type = ShowBits( &p_vpar->bit_stream, 6 );
1019 /* Table B-3, macroblock_type in P-pictures, codes 001..1xx */
1020 static lookup_t PMBtab0[8] = {
1022 {MB_MOTION_FORWARD,3},
1023 {MB_PATTERN,2}, {MB_PATTERN,2},
1024 {MB_MOTION_FORWARD|MB_PATTERN,1},
1025 {MB_MOTION_FORWARD|MB_PATTERN,1},
1026 {MB_MOTION_FORWARD|MB_PATTERN,1},
1027 {MB_MOTION_FORWARD|MB_PATTERN,1}
1030 /* Table B-3, macroblock_type in P-pictures, codes 000001..00011x */
1031 static lookup_t PMBtab1[8] = {
1033 {MB_QUANT|MB_INTRA,6},
1034 {MB_QUANT|MB_PATTERN,5}, {MB_QUANT|MB_PATTERN,5},
1035 {MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN,5}, {MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN,5},
1036 {MB_INTRA,5}, {MB_INTRA,5}
1043 RemoveBits( &p_vpar->bit_stream,PMBtab0[i_type].i_length );
1044 return PMBtab0[i_type].i_value;
1049 printf("Invalid P macroblock_type code\n");
1052 RemoveBits( &p_vpar->bit_stream,PMBtab1[i_type].i_length );
1053 return PMBtab1[i_type].i_value;
1055 /* Dump the good number of bits */
1056 RemoveBits( &p_vpar->bit_stream, p_vpar->ppl_mb_type[0][i_type].i_length );
1057 /* return the value from the lookup table for P type */
1058 return p_vpar->ppl_mb_type[0][i_type].i_value;
1061 /*****************************************************************************
1062 * vpar_BMBType : macroblock_type in B pictures
1063 *****************************************************************************/
1064 int vpar_BMBType( vpar_thread_t * p_vpar )
1066 /* Testing on 6 bits */
1067 int i_type = ShowBits( &p_vpar->bit_stream, 6 );
1069 /* Dump the good number of bits */
1070 RemoveBits( &p_vpar->bit_stream, p_vpar->ppl_mb_type[1][i_type].i_length );
1072 /* return the value from the lookup table for B type */
1073 return p_vpar->ppl_mb_type[1][i_type].i_value;
1076 /*****************************************************************************
1077 * vpar_DMBType : macroblock_type in D pictures
1078 *****************************************************************************/
1079 int vpar_DMBType( vpar_thread_t * p_vpar )
1082 int i_type = GetBits( &p_vpar->bit_stream, 1 );
1085 static int pi_mb_Dtype[2] = { MB_ERROR, 1 };
1087 return pi_mb_Dtype[i_type];
1090 /*****************************************************************************
1091 * vpar_CodedPattern420 : coded_block_pattern with 420 chroma
1092 *****************************************************************************/
1093 int vpar_CodedPattern420( vpar_thread_t * p_vpar )
1095 /* Take the max 9 bits length vlc code for testing */
1096 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1098 /* Trash the good number of bits read in the lookup table */
1099 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_coded_pattern[i_vlc].i_length );
1101 /* return the value from the vlc table */
1102 return p_vpar->pl_coded_pattern[i_vlc].i_value;
1105 /*****************************************************************************
1106 * vpar_CodedPattern422 : coded_block_pattern with 422 chroma
1107 *****************************************************************************/
1108 int vpar_CodedPattern422( vpar_thread_t * p_vpar )
1110 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1112 /* Supplementary 2 bits long code for 422 format */
1113 int i_coded_block_pattern_1;
1115 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_coded_pattern[i_vlc].i_length );
1116 i_coded_block_pattern_1 = GetBits( &p_vpar->bit_stream, 2 );
1118 /* the code is just to be added to the value found in the table */
1119 return p_vpar->pl_coded_pattern[i_vlc].i_value |
1120 (i_coded_block_pattern_1 << 6);
1123 /*****************************************************************************
1124 * vpar_CodedPattern444 : coded_block_pattern with 444 chroma
1125 *****************************************************************************/
1126 int vpar_CodedPattern444( vpar_thread_t * p_vpar )
1128 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1129 int i_coded_block_pattern_2;
1131 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_coded_pattern[i_vlc].i_length );
1132 i_coded_block_pattern_2 = GetBits( &p_vpar->bit_stream, 6 );
1134 return p_vpar->pl_coded_pattern[i_vlc].i_value |
1135 ( i_coded_block_pattern_2 << 6 );
1138 /*****************************************************************************
1139 * vpar_DecodeMPEG1Non : decode MPEG-1 non-intra blocks
1140 *****************************************************************************/
1141 static void vpar_DecodeMPEG1Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
1144 if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
1146 /* Remove end_of_macroblock (always 1, prevents startcode emulation)
1147 * ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
1148 RemoveBits( &p_vpar->bit_stream, 1 );
1152 /*****************************************************************************
1153 * vpar_DecodeMPEG1Intra : decode MPEG-1 intra blocks
1154 *****************************************************************************/
1155 static void vpar_DecodeMPEG1Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
1158 if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
1160 /* Remove end_of_macroblock (always 1, prevents startcode emulation)
1161 * ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
1162 RemoveBits( &p_vpar->bit_stream, 1 );
1166 /*****************************************************************************
1167 * vpar_DecodeMPEG2Non : decode MPEG-2 non-intra blocks
1168 *****************************************************************************/
1169 static void vpar_DecodeMPEG2Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
1185 /* Lookup Table for the chromatic component */
1186 static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
1188 i_cc = pi_cc_index[i_b];
1190 /* Determine whether it is luminance or not (chrominance) */
1191 i_type = ( i_cc + 1 ) >> 1;
1192 i_quant_type = (!i_type) || (p_vpar->sequence.i_chroma_format == CHROMA_420);
1194 /* Give a pointer to the quantization matrices for intra blocks */
1195 ppi_quant[1] = p_vpar->sequence.nonintra_quant.pi_matrix;
1196 ppi_quant[0] = p_vpar->sequence.chroma_nonintra_quant.pi_matrix;
1198 /* Decoding of the AC coefficients */
1202 for( i_parse = 0; ; i_parse++ )
1204 i_code = ShowBits( &p_vpar->bit_stream, 16 );
1205 if( i_code >= 16384 )
1209 i_run = pl_DCT_tab_dc[(i_code>>12)-4].i_run;
1210 i_level = pl_DCT_tab_dc[(i_code>>12)-4].i_level;
1211 i_length = pl_DCT_tab_dc[(i_code>>12)-4].i_length;
1215 i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
1216 i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
1217 i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
1220 else if( i_code >= 1024 )
1222 i_run = pl_DCT_tab0[(i_code>>8)-4].i_run;
1223 i_length = pl_DCT_tab0[(i_code>>8)-4].i_length;
1224 i_level = pl_DCT_tab0[(i_code>>8)-4].i_level;
1228 i_run = ppl_dct_coef[0][i_code].i_run;
1229 i_length = ppl_dct_coef[0][i_code].i_length;
1230 i_level = ppl_dct_coef[0][i_code].i_level;
1234 RemoveBits( &p_vpar->bit_stream, i_length );
1239 i_run = GetBits( &p_vpar->bit_stream, 6 );
1240 i_level = GetBits( &p_vpar->bit_stream, 12 );
1241 i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
1247 p_mb->pf_idct[i_b] = vdec_SparseIDCT;
1248 p_mb->pi_sparse_pos[i_b] = i_coef;
1252 p_mb->pf_idct[i_b] = vdec_IDCT;
1258 b_sign = GetBits( &p_vpar->bit_stream, 1 );
1269 i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
1270 i_level = ( ((i_level << 1) + 1) * p_vpar->slice.i_quantizer_scale
1271 * ppi_quant[i_quant_type][i_pos] ) >> 5;
1272 p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level;
1274 fprintf( stderr, "Non intra MPEG2 end (%d)\n", i_b );
1275 //p_vpar->picture.b_error = 1;
1278 /*****************************************************************************
1279 * vpar_DecodeMPEG2Intra : decode MPEG-2 intra blocks
1280 *****************************************************************************/
1281 static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
1287 int i_type, i_quant_type;
1295 boolean_t b_vlc_intra;
1299 /* Lookup Table for the chromatic component */
1300 static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
1301 i_cc = pi_cc_index[i_b];
1303 /* Determine whether it is luminance or not (chrominance) */
1304 i_type = ( i_cc + 1 ) >> 1;
1305 i_quant_type = (!i_type) | (p_vpar->sequence.i_chroma_format == CHROMA_420);
1307 /* Give a pointer to the quantization matrices for intra blocks */
1308 ppi_quant[1] = p_vpar->sequence.intra_quant.pi_matrix;
1309 ppi_quant[0] = p_vpar->sequence.chroma_intra_quant.pi_matrix;
1312 /* Decoding of the DC intra coefficient */
1313 /* The nb of bits to parse depends on i_type */
1314 i_code = ShowBits( &p_vpar->bit_stream, 9 + i_type );
1316 /* To reduce memory occupation, there are two lookup tables
1317 * See InitDCT above */
1318 i_code5 = i_code >> (4+i_type);
1320 /* Shall we lookup in the first or in the second table ? */
1321 i_select = ( i_code5 == 31 );
1322 /* Offset value for looking in the second table */
1323 i_offset = 0x1f0 + ( i_type * 0x1f0 );
1324 i_pos = ( i_code5 * ( ! i_select ) ) + ( ( i_code - i_offset ) * i_select );
1325 i_dct_dc_size = p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_value;
1328 if( !i_type/*i_b < 4*/ )
1331 i_code = ShowBits(&p_vpar->bit_stream, 5);
1334 i_dct_dc_size = pl_dct_dc_lum_init_table_1[i_code].i_value;
1335 i_length = pl_dct_dc_lum_init_table_1[i_code].i_length;
1336 RemoveBits( &p_vpar->bit_stream, i_length);
1340 i_code = ShowBits(&p_vpar->bit_stream, 9) - 0x1f0;
1341 i_dct_dc_size = pl_dct_dc_lum_init_table_2[i_code].i_value;
1342 i_length = pl_dct_dc_lum_init_table_2[i_code].i_length;
1343 RemoveBits( &p_vpar->bit_stream, i_length);
1349 i_code = ShowBits(&p_vpar->bit_stream, 5);
1353 i_dct_dc_size = pl_dct_dc_chrom_init_table_1[i_code].i_value;
1354 i_length = pl_dct_dc_chrom_init_table_1[i_code].i_length;
1355 RemoveBits(&p_vpar->bit_stream, i_length);
1359 i_code = ShowBits(&p_vpar->bit_stream, 10) - 0x3e0;
1360 i_dct_dc_size = pl_dct_dc_chrom_init_table_2[i_code].i_value;
1361 i_length = pl_dct_dc_chrom_init_table_2[i_code].i_length;
1362 RemoveBits( &p_vpar->bit_stream, i_length);
1365 if (i_dct_dc_size==0)
1369 i_dct_dc_diff = GetBits( &p_vpar->bit_stream, i_dct_dc_size);
1370 if ((i_dct_dc_diff & (1<<(i_dct_dc_size-1)))==0)
1371 i_dct_dc_diff-= (1<<i_dct_dc_size) - 1;
1374 /* Dump the variable length code */
1375 //RemoveBits( &p_vpar->bit_stream,
1376 // p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_length );
1378 /* Read the actual code with the good length */
1379 p_vpar->slice.pi_dc_dct_pred[i_cc] += i_dct_dc_diff;
1381 p_mb->ppi_blocks[i_b][0] = ( p_vpar->slice.pi_dc_dct_pred[i_cc] <<
1382 ( 3 - p_vpar->picture.i_intra_dc_precision ) );
1383 i_nc = ( p_vpar->slice.pi_dc_dct_pred[i_cc] != 0 );
1385 //fprintf( stderr, "coucou\n" );
1386 /* Decoding of the AC coefficients */
1389 b_vlc_intra = p_vpar->picture.b_intra_vlc_format;
1390 for( i_parse = 1; /*i_parse < 64*/; i_parse++ )
1392 i_code = ShowBits( &p_vpar->bit_stream, 16 );
1393 if( i_code >= 16384 )
1397 i_run = pl_DCT_tab0a[(i_code>>8)-4].i_run;
1398 i_level = pl_DCT_tab0a[(i_code>>8)-4].i_level;
1399 i_length = pl_DCT_tab0a[(i_code>>8)-4].i_length;
1400 //fprintf( stderr, "**********> %d, %d, %d *******\n", i_run, i_level, (i_code>>8)-4 );
1404 i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
1405 i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
1406 i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
1411 i_run = ppl_dct_coef[b_vlc_intra][i_code].i_run;
1412 i_length = ppl_dct_coef[b_vlc_intra][i_code].i_length;
1413 i_level = ppl_dct_coef[b_vlc_intra][i_code].i_level;
1419 int intra_vlc_format = b_vlc_intra;
1422 if (code>=16384 && !intra_vlc_format)
1423 tab = pl_DCT_tab_ac[(code>>12)-4];
1424 else if (code>=1024)
1426 if (intra_vlc_format)
1427 tab = pl_DCT_tab0a[(code>>8)-4];
1429 tab = pl_DCT_tab0[(code>>8)-4];
1433 if (intra_vlc_format)
1434 tab = pl_DCT_tab1a[(code>>6)-8];
1436 tab = pl_DCT_tab1[(code>>6)-8];
1439 tab = pl_DCT_tab2[(code>>4)-16];
1441 tab = pl_DCT_tab3[(code>>3)-16];
1443 tab = pl_DCT_tab4[(code>>2)-16];
1445 tab = pl_DCT_tab5[(code>>1)-16];
1447 tab = pl_DCT_tab6[code-16];
1450 fprintf( stderr, "invalid Huffman code in Decode_MPEG2_Intra_Block()\n");
1453 if( (i_run != tab.i_run) || (i_length != tab.i_length) || (i_level != tab.i_level) )
1455 fprintf( stderr, "ET M....... !!!\n" );
1464 RemoveBits( &p_vpar->bit_stream, i_length );
1469 i_run = GetBits( &p_vpar->bit_stream, 6 );
1470 i_level = GetBits( &p_vpar->bit_stream, 12 );
1471 /*p_mb->ppi_blocks[i_b][i_parse] = ( b_sign = ( i_level > 2047 ) )
1472 ? ( -4096 + i_level )
1474 i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
1480 p_mb->pf_idct[i_b] = vdec_SparseIDCT;
1481 p_mb->pi_sparse_pos[i_b] = i_coef;
1485 p_mb->pf_idct[i_b] = vdec_IDCT;
1491 b_sign = GetBits( &p_vpar->bit_stream, 1 );
1492 //p_mb->ppi_blocks[i_b][i_parse] = b_sign ? -i_level : i_level;
1494 // fprintf( stderr, "i_code : %d (%d), run : %d, %d, %d (%4x) ", i_code , b_vlc_intra,
1495 // i_run, i_level, i_parse, ShowBits( &p_vpar->bit_stream, 16 ) );
1497 //fprintf( stderr, "- %4x\n",ShowBits( &p_vpar->bit_stream, 16 ) );
1500 fprintf( stderr, "Beuhh dans l'intra decode (%d)\n", i_b );
1507 i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
1508 i_level = ( i_level *
1509 p_vpar->slice.i_quantizer_scale *
1510 ppi_quant[i_quant_type][i_pos] ) >> 4;
1511 p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level;
1514 fprintf( stderr, "MPEG2 end (%d)\n", i_b );
1515 //p_vpar->b_error = 1;