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"
46 typedef void (*f_decode_block_t)( vpar_thread_t *, macroblock_t *, int );
47 static void vpar_DecodeMPEG1Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b );
48 static void vpar_DecodeMPEG1Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b );
49 static void vpar_DecodeMPEG2Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b );
50 static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b );
53 * Initialisation tables
55 /* Table for coded_block_pattern resolution */
56 static lookup_t pl_coded_pattern_init_table[512] =
57 { {MB_ERROR, 0}, {0, 9}, {39, 9}, {27, 9}, {59, 9}, {55, 9}, {47, 9}, {31, 9},
58 {58, 8}, {58, 8}, {54, 8}, {54, 8}, {46, 8}, {46, 8}, {30, 8}, {30, 8},
59 {57, 8}, {57, 8}, {53, 8}, {53, 8}, {45, 8}, {45, 8}, {29, 8}, {29, 8},
60 {38, 8}, {38, 8}, {26, 8}, {26, 8}, {37, 8}, {37, 8}, {25, 8}, {25, 8},
61 {43, 8}, {43, 8}, {23, 8}, {23, 8}, {51, 8}, {51, 8}, {15, 8}, {15, 8},
62 {42, 8}, {42, 8}, {22, 8}, {22, 8}, {50, 8}, {50, 8}, {14, 8}, {14, 8},
63 {41, 8}, {41, 8}, {21, 8}, {21, 8}, {49, 8}, {49, 8}, {13, 8}, {13, 8},
64 {35, 8}, {35, 8}, {19, 8}, {19, 8}, {11, 8}, {11, 8}, {7, 8}, {7, 8},
65 {34, 7}, {34, 7}, {34, 7}, {34, 7}, {18, 7}, {18, 7}, {18, 7}, {18, 7},
66 {10, 7}, {10, 7}, {10, 7}, {10, 7}, {6, 7}, {6, 7}, {6, 7}, {6, 7},
67 {33, 7}, {33, 7}, {33, 7}, {33, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7},
68 {9, 7}, {9, 7}, {9, 7}, {9, 7}, {5, 7}, {5, 7}, {5, 7}, {5, 7},
69 {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6},
70 {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6},
71 {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6},
72 {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6},
73 {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5},
74 {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5},
75 {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5},
76 {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5},
77 {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5},
78 {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5},
79 {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5},
80 {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5},
81 {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5},
82 {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5},
83 {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5},
84 {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5},
85 {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5},
86 {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5},
87 {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5},
88 {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5},
89 {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5},
90 {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5},
91 {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5},
92 {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5},
93 {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5},
94 {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5},
95 {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5},
96 {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5},
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 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
100 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 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 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
104 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 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 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
108 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 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 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
112 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
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},
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} };
122 /* Tables for dc DCT coefficients
123 * Tables are cut in two parts to reduce memory occupation
126 /* Table B-12, dct_dc_size_luminance, codes 00xxx ... 11110 */
127 static lookup_t pl_dct_dc_lum_init_table_1[32] =
128 { {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
129 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
130 {0, 3}, {0, 3}, {0, 3}, {0, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3},
131 {4, 3}, {4, 3}, {4, 3}, {4, 3}, {5, 4}, {5, 4}, {6, 5}, {MB_ERROR, 0}
134 /* Table B-12, dct_dc_size_luminance, codes 111110xxx ... 111111111 */
135 static lookup_t pl_dct_dc_lum_init_table_2[32] =
136 { {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6},
137 {8, 7}, {8, 7}, {8, 7}, {8, 7}, {9, 8}, {9, 8}, {10,9}, {11,9},
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},
140 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0},
141 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}
144 /* Table B-13, dct_dc_size_chrominance, codes 00xxx ... 11110 */
145 static lookup_t pl_dct_dc_chrom_init_table_1[32] =
146 { {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2},
147 {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
148 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
149 {3, 3}, {3, 3}, {3, 3}, {3, 3}, {4, 4}, {4, 4}, {5, 5}, {MB_ERROR, 0}
152 /* Table B-13, dct_dc_size_chrominance, codes 111110xxxx ... 1111111111 */
153 static lookup_t pl_dct_dc_chrom_init_table_2[32] =
154 { {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
155 {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
156 {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7},
157 {8, 8}, {8, 8}, {8, 8}, {8, 8}, {9, 9}, {9, 9}, {10,10}, {11,10}
161 * Structure to store the tables B14 & B15
162 * Is constructed from the tables below
164 dct_lookup_t ppl_dct_coef[2][16384];
167 /* Tables for ac DCT coefficients. There are cut in many parts to save space */
168 /* Table B-14, DCT coefficients table zero,
169 * codes 0100 ... 1xxx (used for first (DC) coefficient)
171 static dct_lookup_t pl_DCT_tab_dc[12] =
173 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
174 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1},
175 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1}
178 /* Table B-14, DCT coefficients table zero,
179 * codes 0100 ... 1xxx (used for all other coefficients)
181 static dct_lookup_t pl_DCT_tab_ac[12] =
183 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
184 {DCT_EOB,0,2}, {DCT_EOB,0,2}, {DCT_EOB,0,2}, {DCT_EOB,0,2}, /* EOB */
185 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2}
188 /* Table B-14, DCT coefficients table zero,
189 * codes 000001xx ... 00111xxx
191 static dct_lookup_t pl_DCT_tab0[60] =
193 {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6},
195 {2,2,7}, {2,2,7}, {9,1,7}, {9,1,7},
196 {0,4,7}, {0,4,7}, {8,1,7}, {8,1,7},
197 {7,1,6}, {7,1,6}, {7,1,6}, {7,1,6},
198 {6,1,6}, {6,1,6}, {6,1,6}, {6,1,6},
199 {1,2,6}, {1,2,6}, {1,2,6}, {1,2,6},
200 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
201 {13,1,8}, {0,6,8}, {12,1,8}, {11,1,8},
202 {3,2,8}, {1,3,8}, {0,5,8}, {10,1,8},
203 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
204 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
205 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
206 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
207 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
208 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5}
211 /* Table B-15, DCT coefficients table one,
212 * codes 000001xx ... 11111111
214 static dct_lookup_t pl_DCT_tab0a[252] =
216 {65,0,6}, {65,0,6}, {65,0,6}, {65,0,6}, /* Escape */
217 {7,1,7}, {7,1,7}, {8,1,7}, {8,1,7},
218 {6,1,7}, {6,1,7}, {2,2,7}, {2,2,7},
219 {0,7,6}, {0,7,6}, {0,7,6}, {0,7,6},
220 {0,6,6}, {0,6,6}, {0,6,6}, {0,6,6},
221 {4,1,6}, {4,1,6}, {4,1,6}, {4,1,6},
222 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
223 {1,5,8}, {11,1,8}, {0,11,8}, {0,10,8},
224 {13,1,8}, {12,1,8}, {3,2,8}, {1,4,8},
225 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
226 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
227 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
228 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
229 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
230 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
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 {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 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4}, /* EOB */
240 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
241 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
242 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
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 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
246 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
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 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
262 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
263 {0,2,3}, {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 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
270 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
271 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
272 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
273 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
274 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
275 {9,1,7}, {9,1,7}, {1,3,7}, {1,3,7},
276 {10,1,7}, {10,1,7}, {0,8,7}, {0,8,7},
277 {0,9,7}, {0,9,7}, {0,12,8}, {0,13,8},
278 {2,3,8}, {4,2,8}, {0,14,8}, {0,15,8}
281 /* Table B-14, DCT coefficients table zero,
282 * codes 0000001000 ... 0000001111
284 static dct_lookup_t pl_DCT_tab1[8] =
286 {16,1,10}, {5,2,10}, {0,7,10}, {2,3,10},
287 {1,4,10}, {15,1,10}, {14,1,10}, {4,2,10}
290 /* Table B-15, DCT coefficients table one,
291 * codes 000000100x ... 000000111x
293 static dct_lookup_t pl_DCT_tab1a[8] =
295 {5,2,9}, {5,2,9}, {14,1,9}, {14,1,9},
296 {2,4,10}, {16,1,10}, {15,1,9}, {15,1,9}
299 /* Table B-14/15, DCT coefficients table zero / one,
300 * codes 000000010000 ... 000000011111
302 static dct_lookup_t pl_DCT_tab2[16] =
304 {0,11,12}, {8,2,12}, {4,3,12}, {0,10,12},
305 {2,4,12}, {7,2,12}, {21,1,12}, {20,1,12},
306 {0,9,12}, {19,1,12}, {18,1,12}, {1,5,12},
307 {3,3,12}, {0,8,12}, {6,2,12}, {17,1,12}
310 /* Table B-14/15, DCT coefficients table zero / one,
311 * codes 0000000010000 ... 0000000011111
313 static dct_lookup_t pl_DCT_tab3[16] =
315 {10,2,13}, {9,2,13}, {5,3,13}, {3,4,13},
316 {2,5,13}, {1,7,13}, {1,6,13}, {0,15,13},
317 {0,14,13}, {0,13,13}, {0,12,13}, {26,1,13},
318 {25,1,13}, {24,1,13}, {23,1,13}, {22,1,13}
321 /* Table B-14/15, DCT coefficients table zero / one,
322 * codes 00000000010000 ... 00000000011111
324 static dct_lookup_t pl_DCT_tab4[16] =
326 {0,31,14}, {0,30,14}, {0,29,14}, {0,28,14},
327 {0,27,14}, {0,26,14}, {0,25,14}, {0,24,14},
328 {0,23,14}, {0,22,14}, {0,21,14}, {0,20,14},
329 {0,19,14}, {0,18,14}, {0,17,14}, {0,16,14}
332 /* Table B-14/15, DCT coefficients table zero / one,
333 * codes 000000000010000 ... 000000000011111
335 static dct_lookup_t pl_DCT_tab5[16] =
337 {0,40,15}, {0,39,15}, {0,38,15}, {0,37,15},
338 {0,36,15}, {0,35,15}, {0,34,15}, {0,33,15},
339 {0,32,15}, {1,14,15}, {1,13,15}, {1,12,15},
340 {1,11,15}, {1,10,15}, {1,9,15}, {1,8,15}
343 /* Table B-14/15, DCT coefficients table zero / one,
344 * codes 0000000000010000 ... 0000000000011111
346 static dct_lookup_t pl_DCT_tab6[16] =
348 {1,18,16}, {1,17,16}, {1,16,16}, {1,15,16},
349 {6,3,16}, {16,2,16}, {15,2,16}, {14,2,16},
350 {13,2,16}, {12,2,16}, {11,2,16}, {31,1,16},
351 {30,1,16}, {29,1,16}, {28,1,16}, {27,1,16}
354 * Initialization of lookup tables
357 /*****************************************************************************
358 * vpar_InitCrop : Initialize the crop table for saturation
359 * (ISO/IEC 13818-2 section 7.4.3)
360 *****************************************************************************/
361 #if defined(MPEG2_COMPLIANT) && !defined(VDEC_DFT)
362 void vpar_InitCrop( vpar_thread_t * p_vpar )
366 p_vpar->pi_crop = p_vpar->pi_crop_buf + 4096;
368 for( i_dummy = -4096; i_dummy < -2048; i_dummy++ )
370 p_vpar->pi_crop[i_dummy] = -2048;
372 for( ; i_dummy < 2047; i_dummy++ )
374 p_vpar->pi_crop[i_dummy] = i_dummy;
376 for( ; i_dummy < 4095; i_dummy++ )
378 p_vpar->pi_crop[i_dummy] = 2047;
383 /*****************************************************************************
384 * InitMbAddrInc : Initialize the lookup table for mb_addr_inc
385 *****************************************************************************/
387 /* Function for filling up the lookup table for mb_addr_inc */
388 static void __inline__ FillMbAddrIncTable( vpar_thread_t * p_vpar,
389 int i_start, int i_end, int i_step,
390 int * pi_value, int i_length )
393 for( i_pos = i_start ; i_pos < i_end ; i_pos += i_step )
395 for( i_offset = 0 ; i_offset < i_step ; i_offset ++ )
397 p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_value = * pi_value;
398 p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_length = i_length;
404 /* Function that initialize the table using the last one */
405 void vpar_InitMbAddrInc( vpar_thread_t * p_vpar )
410 for( i_dummy = 0 ; i_dummy < 8 ; i_dummy++ )
412 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
413 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
416 p_vpar->pl_mb_addr_inc[8].i_value = MB_ADDRINC_ESCAPE;
417 p_vpar->pl_mb_addr_inc[8].i_length = 11;
419 for( i_dummy = 9 ; i_dummy < 15 ; i_dummy ++ )
421 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
422 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
425 p_vpar->pl_mb_addr_inc[15].i_value = MB_ADDRINC_STUFFING;
426 p_vpar->pl_mb_addr_inc[15].i_length = 11;
428 for( i_dummy = 16; i_dummy < 24; i_dummy++ )
430 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
431 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
436 FillMbAddrIncTable( p_vpar, 24, 36, 1, &i_value, 11 );
437 FillMbAddrIncTable( p_vpar, 36, 48, 2, &i_value, 10 );
438 FillMbAddrIncTable( p_vpar, 48, 96, 8, &i_value, 8 );
439 FillMbAddrIncTable( p_vpar, 96, 128, 16, &i_value, 7 );
440 FillMbAddrIncTable( p_vpar, 128, 256, 64, &i_value, 5 );
441 FillMbAddrIncTable( p_vpar, 256, 512, 128, &i_value, 4 );
442 FillMbAddrIncTable( p_vpar, 512, 1024, 256, &i_value, 3 );
443 FillMbAddrIncTable( p_vpar, 1024, 2048, 1024, &i_value, 1 );
446 /*****************************************************************************
447 * Init*MBType : Initialize lookup table for the Macroblock type
448 *****************************************************************************/
450 /* Fonction for filling up the tables */
451 static void __inline__ FillMBType( vpar_thread_t * p_vpar,
460 for( i_dummy = i_start ; i_dummy < i_end ; i_dummy++ )
462 p_vpar->ppl_mb_type[i_mb_type][i_dummy].i_value = i_value;
463 p_vpar->ppl_mb_type[i_mb_type][i_dummy].i_length = i_length;
467 /* Fonction that fills the table for P MB_Type */
468 void vpar_InitPMBType( vpar_thread_t * p_vpar )
470 FillMBType( p_vpar, 0, 32, 64, MB_MOTION_FORWARD|MB_PATTERN, 1 );
471 FillMBType( p_vpar, 0, 16, 32, MB_PATTERN, 2 );
472 FillMBType( p_vpar, 0, 8, 16, MB_MOTION_FORWARD, 3 );
473 FillMBType( p_vpar, 0, 6, 8, MB_INTRA, 5 );
474 FillMBType( p_vpar, 0, 4, 6, MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN, 5 );
475 FillMBType( p_vpar, 0, 2, 4, MB_QUANT|MB_PATTERN, 5 );
476 p_vpar->ppl_mb_type[0][1].i_value = MB_QUANT|MB_INTRA;
477 p_vpar->ppl_mb_type[0][1].i_length = 6;
478 p_vpar->ppl_mb_type[0][0].i_value = MB_ERROR;
479 p_vpar->ppl_mb_type[0][0].i_length = 0;
482 /* Fonction that fills the table for B MB_Type */
483 void vpar_InitBMBType( vpar_thread_t * p_vpar )
485 FillMBType( p_vpar, 1, 48, 64, MB_MOTION_FORWARD
486 |MB_MOTION_BACKWARD|MB_PATTERN, 2 );
487 FillMBType( p_vpar, 1, 32, 48, MB_MOTION_FORWARD|MB_MOTION_BACKWARD, 2 );
488 FillMBType( p_vpar, 1, 24, 32, MB_MOTION_BACKWARD|MB_PATTERN, 3 );
489 FillMBType( p_vpar, 1, 16, 24, MB_MOTION_BACKWARD, 3 );
490 FillMBType( p_vpar, 1, 12, 16, MB_MOTION_FORWARD|MB_PATTERN, 4 );
491 FillMBType( p_vpar, 1, 8, 12, MB_MOTION_FORWARD, 4 );
492 FillMBType( p_vpar, 1, 6, 8, MB_INTRA, 5 );
493 FillMBType( p_vpar, 1, 4, 6, MB_QUANT|MB_MOTION_FORWARD
494 |MB_MOTION_BACKWARD|MB_PATTERN, 5 );
495 p_vpar->ppl_mb_type[1][3].i_value = MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN;
496 p_vpar->ppl_mb_type[1][3].i_length = 6;
497 p_vpar->ppl_mb_type[1][2].i_value = MB_QUANT|MB_MOTION_BACKWARD|MB_PATTERN;
498 p_vpar->ppl_mb_type[1][2].i_length = 6;
499 p_vpar->ppl_mb_type[1][1].i_value = MB_QUANT|MB_INTRA;
500 p_vpar->ppl_mb_type[1][1].i_length = 6;
501 p_vpar->ppl_mb_type[1][0].i_value =MB_ERROR;
502 p_vpar->ppl_mb_type[1][0].i_length = 0;
505 /*****************************************************************************
506 * InitCodedPattern : Initialize the lookup table for decoding
507 * coded block pattern
508 *****************************************************************************/
509 void vpar_InitCodedPattern( vpar_thread_t * p_vpar )
511 p_vpar->pl_coded_pattern = (lookup_t*) pl_coded_pattern_init_table;
514 /*****************************************************************************
515 * InitDCT : Initialize tables giving the length of the dct coefficient
517 *****************************************************************************/
519 /* First fonction for filling the table */
520 static void __inline__ FillDCTTable( dct_lookup_t * p_tab_dest, dct_lookup_t * p_tab_src,
521 int i_step, int i_nb_elem, int i_offset )
523 int i_dummy, i_dummy2;
525 for( i_dummy=0 ; i_dummy < i_nb_elem ; i_dummy++ )
527 for( i_dummy2=0 ; i_dummy2 < i_step ; i_dummy2++ )
529 p_tab_dest[(i_dummy+i_offset)*i_step+i_dummy2] = p_tab_src[i_dummy];
535 /* Fonction that actually fills the table or create the pointers */
536 void vpar_InitDCTTables( vpar_thread_t * p_vpar )
538 /* Tables are cut in two parts to reduce memory occupation */
539 p_vpar->pppl_dct_dc_size[0][0] = pl_dct_dc_lum_init_table_1;
540 p_vpar->pppl_dct_dc_size[0][1] = pl_dct_dc_lum_init_table_2;
541 p_vpar->pppl_dct_dc_size[1][0] = pl_dct_dc_chrom_init_table_1;
542 p_vpar->pppl_dct_dc_size[1][1] = pl_dct_dc_chrom_init_table_2;
544 memset( ppl_dct_coef[0], MB_ERROR, 16 );
545 memset( ppl_dct_coef[1], MB_ERROR, 16 );
547 /* For table B14 & B15, we have a pointer to tables */
548 /* We fill the table thanks to the fonction defined above */
549 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab0, 256, 60, 4 );
550 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab1, 64, 8, 8 );
551 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab2, 16, 16, 16 );
552 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab3, 8, 16, 16 );
553 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab4, 4, 16, 16 );
554 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab5, 2, 16, 16 );
555 FillDCTTable( ppl_dct_coef[0], pl_DCT_tab6, 1, 16, 16 );
557 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab0a, 256, 60, 4 );
558 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab1a, 64, 8, 8 );
559 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab2, 16, 16, 16 );
560 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab3, 8, 16, 16 );
561 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab4, 4, 16, 16 );
562 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab5, 2, 16, 16 );
563 FillDCTTable( ppl_dct_coef[1], pl_DCT_tab6, 1, 16, 16 );
567 * Macroblock parsing functions
570 /*****************************************************************************
571 * InitMacroblock : Initialize macroblock values
572 *****************************************************************************/
573 static __inline__ void InitMacroblock( vpar_thread_t * p_vpar,
574 macroblock_t * p_mb )
576 static f_chroma_motion_t pf_chroma_motion[4] =
577 { NULL, vdec_Motion420, vdec_Motion422, vdec_Motion444 };
579 p_mb->p_picture = p_vpar->picture.p_picture;
580 p_mb->i_structure = p_vpar->picture.i_structure;
581 p_mb->i_current_structure = p_vpar->picture.i_current_structure;
582 p_mb->b_top_field_first = p_vpar->picture.b_top_field_first;
583 p_mb->i_l_x = p_vpar->mb.i_l_x;
584 p_mb->i_motion_l_y = p_mb->i_l_y = p_vpar->mb.i_l_y;
585 p_mb->i_c_x = p_vpar->mb.i_c_x;
586 p_mb->i_motion_c_y = p_mb->i_c_y = p_vpar->mb.i_c_y;
587 p_mb->i_chroma_nb_blocks = p_vpar->sequence.i_chroma_nb_blocks;
588 p_mb->pf_chroma_motion = pf_chroma_motion[p_vpar->sequence.i_chroma_format];
589 p_mb->b_P_coding_type = ( p_vpar->picture.i_coding_type == P_CODING_TYPE );
591 if( (p_vpar->picture.i_coding_type == P_CODING_TYPE) ||
592 (p_vpar->picture.i_coding_type == B_CODING_TYPE) )
593 p_mb->p_forward = p_vpar->sequence.p_forward;
594 if( p_vpar->picture.i_coding_type == B_CODING_TYPE )
595 p_mb->p_backward = p_vpar->sequence.p_backward;
597 p_mb->i_addb_l_stride = (p_mb->i_l_stride = p_vpar->picture.i_l_stride) - 8;
598 p_mb->i_addb_c_stride = (p_mb->i_c_stride = p_vpar->picture.i_c_stride) - 8;
600 /* Update macroblock real position. */
601 p_vpar->mb.i_l_x += 16;
602 p_vpar->mb.i_l_y += (p_vpar->mb.i_l_x / p_vpar->sequence.i_width)
603 * (2 - p_vpar->picture.b_frame_structure) * 16;
604 p_vpar->mb.i_l_x %= p_vpar->sequence.i_width;
606 p_vpar->mb.i_c_x += p_vpar->sequence.i_chroma_mb_width;
607 p_vpar->mb.i_c_y += (p_vpar->mb.i_c_x / p_vpar->sequence.i_chroma_width)
608 * (2 - p_vpar->picture.b_frame_structure)
609 * p_vpar->sequence.i_chroma_mb_height;
610 p_vpar->mb.i_c_x %= p_vpar->sequence.i_chroma_width;
611 if( p_mb->b_motion_field = p_vpar->picture.b_motion_field )
613 p_mb->i_motion_l_y--;
614 p_mb->i_motion_c_y--;
618 /*****************************************************************************
619 * MacroblockAddressIncrement : Get the macroblock_address_increment field
620 *****************************************************************************/
621 static __inline__ int MacroblockAddressIncrement( vpar_thread_t * p_vpar )
624 /* Index in the lookup table mb_addr_inc */
625 int i_index = ShowBits( &p_vpar->bit_stream, 11 );
627 /* Test the presence of the escape character */
628 while( i_index == 8 )
630 RemoveBits( &p_vpar->bit_stream, 11 );
632 i_index = ShowBits( &p_vpar->bit_stream, 11 );
635 /* Affect the value from the lookup table */
636 i_addr_inc += p_vpar->pl_mb_addr_inc[i_index].i_value;
638 /* Dump the good number of bits */
639 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_mb_addr_inc[i_index].i_length );
644 /*****************************************************************************
645 * MacroblockModes : Get the macroblock_modes structure
646 *****************************************************************************/
647 static __inline__ void MacroblockModes( vpar_thread_t * p_vpar,
648 macroblock_t * p_mb )
650 static f_motion_t pf_motion[2][4] =
651 { {NULL, vdec_MotionFieldField, vdec_MotionField16x8, vdec_MotionFieldDMV},
652 {NULL, vdec_MotionFrameField, vdec_MotionFrameFrame, vdec_MotionFrameDMV} };
653 static int ppi_mv_count[2][4] = { {0, 1, 2, 1}, {0, 2, 1, 1} };
654 static int ppi_mv_format[2][4] = { {0, 1, 1, 1}, {0, 1, 2, 1} };
656 /* Get macroblock_type. */
657 p_vpar->mb.i_mb_type = (p_vpar->picture.pf_macroblock_type)( p_vpar );
658 p_mb->i_mb_type = p_vpar->mb.i_mb_type;
660 /* SCALABILITY : warning, we don't know if spatial_temporal_weight_code
661 * has to be dropped, take care if you use scalable streams. */
662 /* RemoveBits( &p_vpar->bit_stream, 2 ); */
664 if( !(p_vpar->mb.i_mb_type & (MB_MOTION_FORWARD | MB_MOTION_BACKWARD)) )
666 /* If mb_type has neither MOTION_FORWARD nor MOTION_BACKWARD, this
667 * is useless, but also harmless. */
668 p_vpar->mb.i_motion_type = MOTION_FRAME;
672 if( p_vpar->picture.i_structure == FRAME_STRUCTURE
673 && p_vpar->picture.b_frame_pred_frame_dct )
675 p_vpar->mb.i_motion_type = MOTION_FRAME;
679 p_vpar->mb.i_motion_type = GetBits( &p_vpar->bit_stream, 2 );
683 if( p_mb->b_P_coding_type && !(p_vpar->mb.i_mb_type & (MB_MOTION_FORWARD|MB_INTRA)) )
685 /* Special No-MC macroblock in P pictures (7.6.3.5). */
686 memset( p_vpar->slice.pppi_pmv, 0, 8*sizeof(int) );
687 memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
689 p_vpar->mb.i_motion_type = MOTION_FRAME;
690 p_mb->ppi_field_select[0][0] = ( p_vpar->picture.i_current_structure == BOTTOM_FIELD );
693 if( p_vpar->mb.i_mb_type & MB_INTRA )
695 /* For the intra macroblocks, we use an empty motion
696 * compensation function */
697 p_mb->pf_motion = vdec_MotionDummy;
701 p_mb->pf_motion = pf_motion[p_vpar->picture.b_frame_structure]
702 [p_vpar->mb.i_motion_type];
704 p_vpar->mb.i_mv_count = ppi_mv_count[p_vpar->picture.b_frame_structure]
705 [p_vpar->mb.i_motion_type];
706 p_vpar->mb.i_mv_format = ppi_mv_format[p_vpar->picture.b_frame_structure]
707 [p_vpar->mb.i_motion_type];
709 p_vpar->mb.b_dct_type = 0;
710 if( (p_vpar->picture.i_structure == FRAME_STRUCTURE) &&
711 (!p_vpar->picture.b_frame_pred_frame_dct) &&
712 (p_vpar->mb.i_mb_type & (MB_PATTERN|MB_INTRA)) )
714 if( (p_vpar->mb.b_dct_type = GetBits( &p_vpar->bit_stream, 1 )) )
716 /* The DCT is coded on fields. Jump one line between each
718 p_mb->i_addb_l_stride <<= 1;
719 p_mb->i_addb_l_stride += 8;
720 /* With CHROMA_420, the DCT is necessarily frame-coded. */
721 if( p_vpar->sequence.i_chroma_format != CHROMA_420 )
723 p_mb->i_addb_c_stride <<= 1;
724 p_mb->i_addb_c_stride += 8;
728 p_vpar->mb.b_dmv = p_vpar->mb.i_motion_type == MOTION_DMV;
731 /*****************************************************************************
732 * vpar_ParseMacroblock : Parse the next macroblock
733 *****************************************************************************/
734 void vpar_ParseMacroblock( vpar_thread_t * p_vpar, int * pi_mb_address,
735 int i_mb_previous, int i_mb_base )
737 static f_addb_t ppf_addb_intra[2] = {vdec_AddBlock, vdec_CopyBlock};
738 static f_decode_block_t pppf_decode_block[2][2] =
739 { {vpar_DecodeMPEG1Non, vpar_DecodeMPEG1Intra},
740 {vpar_DecodeMPEG2Non, vpar_DecodeMPEG2Intra} };
741 static int pi_x[12] = {0,8,0,8,0,0,0,0,8,8,8,8};
742 static int pi_y[2][12] = { {0,0,8,8,0,0,8,8,0,0,8,8},
743 {0,0,1,1,0,0,1,1,0,0,1,1} };
745 int i_mb, i_b, i_mask;
748 yuv_data_t * p_data1;
749 yuv_data_t * p_data2;
751 /************* DEBUG *************/
756 i_inc = MacroblockAddressIncrement( p_vpar );
757 *pi_mb_address += i_inc;
758 //*pi_mb_address += MacroblockAddressIncrement( p_vpar );
760 for( i_mb = i_mb_previous + 1; i_mb < *pi_mb_address; i_mb++ )
762 /* Skipped macroblock (ISO/IEC 13818-2 7.6.6). */
763 static int pi_dc_dct_reinit[4] = {128,256,512,1024};
764 static f_motion_t pf_motion_skipped[4] = {NULL, vdec_MotionFieldField,
765 vdec_MotionFieldField, vdec_MotionFrameFrame};
766 fprintf(stderr, "On sauuuute !\n");
767 /* Reset DC predictors (7.2.1). */
768 p_vpar->slice.pi_dc_dct_pred[0] = p_vpar->slice.pi_dc_dct_pred[1]
769 = p_vpar->slice.pi_dc_dct_pred[2]
770 = pi_dc_dct_reinit[p_vpar->picture.i_intra_dc_precision];
772 if( p_vpar->picture.i_coding_type == P_CODING_TYPE )
774 /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
775 memset( p_vpar->slice.pppi_pmv, 0, 8*sizeof(int) );
778 if( (p_mb = p_vpar->picture.pp_mb[i_mb_base + i_mb] =
779 vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
781 p_vpar->picture.b_error = 1;
782 intf_ErrMsg("vpar error: macroblock list is empty !\n");
786 InitMacroblock( p_vpar, p_mb );
788 /* No IDCT nor AddBlock. */
789 for( i_b = 0; i_b < 12; i_b++ )
791 p_mb->pf_idct[i_b] = vdec_DummyIDCT;
792 p_mb->pf_addb[i_b] = vdec_DummyBlock;
795 /* Motion type is picture structure. */
796 p_mb->pf_motion = pf_motion_skipped[p_vpar->picture.i_structure];
797 p_mb->i_mb_type = MB_MOTION_FORWARD;
799 /* Set the field we use for motion compensation */
800 p_mb->ppi_field_select[0][0] = p_mb->ppi_field_select[0][1]
801 = ( p_vpar->picture.i_current_structure == BOTTOM_FIELD );
804 /* Get a macroblock structure. */
805 if( (p_mb = p_vpar->picture.pp_mb[i_mb_base + *pi_mb_address] =
806 vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
808 p_vpar->picture.b_error = 1;
809 intf_ErrMsg("vpar error: macroblock list is empty !\n");
813 InitMacroblock( p_vpar, p_mb );
815 /* Parse off macroblock_modes structure. */
816 MacroblockModes( p_vpar, p_mb );
818 if( p_vpar->mb.i_mb_type & MB_QUANT )
820 LoadQuantizerScale( p_vpar );
823 if( p_vpar->mb.i_mb_type & MB_MOTION_FORWARD )
825 //fprintf( stderr, "motion !\n" );
826 (*p_vpar->sequence.pf_decode_mv)( p_vpar, p_mb, 0 );
829 if( p_vpar->mb.i_mb_type & MB_MOTION_BACKWARD )
831 //fprintf( stderr, "motion2 !\n" );
832 (*p_vpar->sequence.pf_decode_mv)( p_vpar, p_mb, 1 );
835 if( p_vpar->picture.b_concealment_mv && (p_vpar->mb.i_mb_type & MB_INTRA) )
837 RemoveBits( &p_vpar->bit_stream, 1 );
841 // i_count != *pi_mb_address)
842 //p_vpar->picture.i_coding_type == P_CODING_TYPE )
844 fprintf( stderr, "i_count = %d (%d)\n", i_count, p_vpar->mb.i_mb_type );
845 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
846 fprintf( stderr, "%x ", GetBits( &p_vpar->bit_stream, 16 ) );
847 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
848 fprintf( stderr, "%x\n", 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", GetBits( &p_vpar->bit_stream, 16 ) );
852 fprintf( stderr, "%x\n", GetBits( &p_vpar->bit_stream, 16 ) );
856 if( p_vpar->mb.i_mb_type & MB_PATTERN )
858 p_vpar->mb.i_coded_block_pattern = (*p_vpar->sequence.pf_decode_pattern)( p_vpar );
859 //fprintf( stderr, "pattern : %d\n", p_vpar->mb.i_coded_block_pattern );
863 int pi_coded_block_pattern[2] = {0,
864 (1 << (4+p_vpar->sequence.i_chroma_nb_blocks)) - 1};
865 p_vpar->mb.i_coded_block_pattern = pi_coded_block_pattern
866 [p_vpar->mb.i_mb_type & MB_INTRA];
868 pf_addb = ppf_addb_intra[p_vpar->mb.i_mb_type & MB_INTRA];
871 * Effectively decode blocks.
874 i_mask = 1 << (3 + p_vpar->sequence.i_chroma_nb_blocks);
877 p_data1 = p_mb->p_picture->p_y
878 + p_mb->i_l_x + p_mb->i_l_y*(p_vpar->sequence.i_width);
880 for( i_b = 0 ; i_b < 4 ; i_b++, i_mask >>= 1 )
882 if( p_vpar->mb.i_coded_block_pattern & i_mask )
884 memset( p_mb->ppi_blocks[i_b], 0, 64*sizeof(dctelem_t) );
885 (*pppf_decode_block[p_vpar->sequence.b_mpeg2]
886 [p_vpar->mb.i_mb_type & MB_INTRA])
887 ( p_vpar, p_mb, i_b );
889 /* decode_block has already set pf_idct and pi_sparse_pos. */
890 p_mb->pf_addb[i_b] = pf_addb;
892 /* Calculate block coordinates. */
893 p_mb->p_data[i_b] = p_data1
894 + pi_y[p_vpar->mb.b_dct_type][i_b]
895 * p_vpar->sequence.i_width
900 /* Block not coded, so no IDCT, nor AddBlock */
901 p_mb->pf_addb[i_b] = vdec_DummyBlock;
902 p_mb->pf_idct[i_b] = vdec_DummyIDCT;
907 p_data1 = p_mb->p_picture->p_u
910 * (p_vpar->sequence.i_chroma_width);
911 p_data2 = p_mb->p_picture->p_v
914 * (p_vpar->sequence.i_chroma_width);
916 for( i_b = 4; i_b < 4 + p_vpar->sequence.i_chroma_nb_blocks;
917 i_b++, i_mask >>= 1 )
919 yuv_data_t * pp_data[2] = {p_data1, p_data2};
921 if( p_vpar->mb.i_coded_block_pattern & i_mask )
923 memset( p_mb->ppi_blocks[i_b], 0, 64*sizeof(dctelem_t) );
924 (*pppf_decode_block[p_vpar->sequence.b_mpeg2]
925 [p_vpar->mb.i_mb_type & MB_INTRA])
926 ( p_vpar, p_mb, i_b );
928 /* decode_block has already set pf_idct and pi_sparse_pos. */
929 p_mb->pf_addb[i_b] = pf_addb;
931 /* Calculate block coordinates. */
932 p_mb->p_data[i_b] = pp_data[i_b & 1]
933 + pi_y[p_vpar->mb.b_dct_type][i_b]
934 * p_vpar->sequence.i_chroma_width
939 /* Block not coded, so no IDCT, nor AddBlock */
940 p_mb->pf_addb[i_b] = vdec_DummyBlock;
941 p_mb->pf_idct[i_b] = vdec_DummyIDCT;
945 if( !( p_vpar->mb.i_mb_type & MB_INTRA ) )
947 static int pi_dc_dct_reinit[4] = {128,256,512,1024};
949 /* Reset DC predictors (7.2.1). */
950 p_vpar->slice.pi_dc_dct_pred[0] = p_vpar->slice.pi_dc_dct_pred[1]
951 = p_vpar->slice.pi_dc_dct_pred[2]
952 = pi_dc_dct_reinit[p_vpar->picture.i_intra_dc_precision];
954 else if( !p_vpar->picture.b_concealment_mv )
956 /* Reset MV predictors. */
957 memset( p_vpar->slice.pppi_pmv, 0, 8*sizeof(int) );
960 if( p_mb->b_P_coding_type && !(p_vpar->mb.i_mb_type & (MB_MOTION_FORWARD|MB_INTRA)) )
962 p_mb->i_mb_type |= MB_MOTION_FORWARD;
965 if( p_vpar->picture.i_coding_type != I_CODING_TYPE )//!(p_mb->b_P_coding_type & MB_INTRA) )
967 p_mb->i_mb_type |= MB_MOTION_FORWARD;
972 // i_count != *pi_mb_address)
975 fprintf( stderr, "i_count = %d (%d)\n", i_count, i_inc );
976 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
977 fprintf( stderr, "%x ", GetBits( &p_vpar->bit_stream, 16 ) );
978 fprintf( stderr, "%x", GetBits( &p_vpar->bit_stream, 16 ) );
979 fprintf( stderr, "%x\n", GetBits( &p_vpar->bit_stream, 16 ) );
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 ) );
988 /*****************************************************************************
989 * vpar_IMBType : macroblock_type in I pictures
990 *****************************************************************************/
991 int vpar_IMBType( vpar_thread_t * p_vpar )
993 /* Take two bits for testing */
994 int i_type = ShowBits( &p_vpar->bit_stream, 2 );
996 /* Lookup table for macroblock_type */
997 static lookup_t pl_mb_Itype[4] = { {MB_ERROR, 0},
998 {MB_QUANT|MB_INTRA, 2},
1001 /* Dump the good number of bits */
1002 RemoveBits( &p_vpar->bit_stream, pl_mb_Itype[i_type].i_length );
1003 return pl_mb_Itype[i_type].i_value;
1006 /*****************************************************************************
1007 * vpar_PMBType : macroblock_type in P pictures
1008 *****************************************************************************/
1009 int vpar_PMBType( vpar_thread_t * p_vpar )
1011 /* Testing on 6 bits */
1012 int i_type = ShowBits( &p_vpar->bit_stream, 6 );
1015 /* Table B-3, macroblock_type in P-pictures, codes 001..1xx */
1016 static lookup_t PMBtab0[8] = {
1018 {MB_MOTION_FORWARD,3},
1019 {MB_PATTERN,2}, {MB_PATTERN,2},
1020 {MB_MOTION_FORWARD|MB_PATTERN,1},
1021 {MB_MOTION_FORWARD|MB_PATTERN,1},
1022 {MB_MOTION_FORWARD|MB_PATTERN,1},
1023 {MB_MOTION_FORWARD|MB_PATTERN,1}
1026 /* Table B-3, macroblock_type in P-pictures, codes 000001..00011x */
1027 static lookup_t PMBtab1[8] = {
1029 {MB_QUANT|MB_INTRA,6},
1030 {MB_QUANT|MB_PATTERN,5}, {MB_QUANT|MB_PATTERN,5},
1031 {MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN,5}, {MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN,5},
1032 {MB_INTRA,5}, {MB_INTRA,5}
1039 RemoveBits( &p_vpar->bit_stream,PMBtab0[i_type].i_length );
1040 return PMBtab0[i_type].i_value;
1045 printf("Invalid P macroblock_type code\n");
1048 RemoveBits( &p_vpar->bit_stream,PMBtab1[i_type].i_length );
1049 return PMBtab1[i_type].i_value;
1051 /* Dump the good number of bits */
1052 RemoveBits( &p_vpar->bit_stream, p_vpar->ppl_mb_type[0][i_type].i_length );
1053 /* return the value from the lookup table for P type */
1054 return p_vpar->ppl_mb_type[0][i_type].i_value;
1057 /*****************************************************************************
1058 * vpar_BMBType : macroblock_type in B pictures
1059 *****************************************************************************/
1060 int vpar_BMBType( vpar_thread_t * p_vpar )
1062 /* Testing on 6 bits */
1063 int i_type = ShowBits( &p_vpar->bit_stream, 6 );
1065 /* Dump the good number of bits */
1066 RemoveBits( &p_vpar->bit_stream, p_vpar->ppl_mb_type[1][i_type].i_length );
1068 /* return the value from the lookup table for B type */
1069 return p_vpar->ppl_mb_type[1][i_type].i_value;
1072 /*****************************************************************************
1073 * vpar_DMBType : macroblock_type in D pictures
1074 *****************************************************************************/
1075 int vpar_DMBType( vpar_thread_t * p_vpar )
1078 int i_type = GetBits( &p_vpar->bit_stream, 1 );
1081 static int pi_mb_Dtype[2] = { MB_ERROR, 1 };
1083 return pi_mb_Dtype[i_type];
1086 /*****************************************************************************
1087 * vpar_CodedPattern420 : coded_block_pattern with 420 chroma
1088 *****************************************************************************/
1089 int vpar_CodedPattern420( vpar_thread_t * p_vpar )
1091 /* Take the max 9 bits length vlc code for testing */
1092 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1094 /* Trash the good number of bits read in the lookup table */
1095 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_coded_pattern[i_vlc].i_length );
1097 /* return the value from the vlc table */
1098 return p_vpar->pl_coded_pattern[i_vlc].i_value;
1101 /*****************************************************************************
1102 * vpar_CodedPattern422 : coded_block_pattern with 422 chroma
1103 *****************************************************************************/
1104 int vpar_CodedPattern422( vpar_thread_t * p_vpar )
1106 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1108 /* Supplementary 2 bits long code for 422 format */
1109 int i_coded_block_pattern_1;
1111 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_coded_pattern[i_vlc].i_length );
1112 i_coded_block_pattern_1 = GetBits( &p_vpar->bit_stream, 2 );
1114 /* the code is just to be added to the value found in the table */
1115 return p_vpar->pl_coded_pattern[i_vlc].i_value |
1116 (i_coded_block_pattern_1 << 6);
1119 /*****************************************************************************
1120 * vpar_CodedPattern444 : coded_block_pattern with 444 chroma
1121 *****************************************************************************/
1122 int vpar_CodedPattern444( vpar_thread_t * p_vpar )
1124 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1125 int i_coded_block_pattern_2;
1127 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_coded_pattern[i_vlc].i_length );
1128 i_coded_block_pattern_2 = GetBits( &p_vpar->bit_stream, 6 );
1130 return p_vpar->pl_coded_pattern[i_vlc].i_value |
1131 ( i_coded_block_pattern_2 << 6 );
1134 /*****************************************************************************
1135 * vpar_DecodeMPEG1Non : decode MPEG-1 non-intra blocks
1136 *****************************************************************************/
1137 static void vpar_DecodeMPEG1Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
1140 if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
1142 /* Remove end_of_macroblock (always 1, prevents startcode emulation)
1143 * ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
1144 RemoveBits( &p_vpar->bit_stream, 1 );
1148 /*****************************************************************************
1149 * vpar_DecodeMPEG1Intra : decode MPEG-1 intra blocks
1150 *****************************************************************************/
1151 static void vpar_DecodeMPEG1Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
1154 if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
1156 /* Remove end_of_macroblock (always 1, prevents startcode emulation)
1157 * ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
1158 RemoveBits( &p_vpar->bit_stream, 1 );
1162 /*****************************************************************************
1163 * vpar_DecodeMPEG2Non : decode MPEG-2 non-intra blocks
1164 *****************************************************************************/
1165 static void vpar_DecodeMPEG2Non( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
1180 /* Lookup Table for the chromatic component */
1181 static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
1183 i_cc = pi_cc_index[i_b];
1185 /* Determine whether it is luminance or not (chrominance) */
1186 i_type = ( i_cc + 1 ) >> 1;
1188 /* Give a pointer to the quantization matrices for intra blocks */
1189 ppi_quant[0] = p_vpar->sequence.nonintra_quant.pi_matrix;
1190 ppi_quant[1] = p_vpar->sequence.chroma_nonintra_quant.pi_matrix;
1192 /* Decoding of the AC coefficients */
1196 for( i_parse = 0; ; i_parse++ )
1198 i_code = ShowBits( &p_vpar->bit_stream, 16 );
1199 if( i_code >= 16384 )
1203 i_run = pl_DCT_tab_dc[(i_code>>12)-4].i_run;
1204 i_level = pl_DCT_tab_dc[(i_code>>12)-4].i_level;
1205 i_length = pl_DCT_tab_dc[(i_code>>12)-4].i_length;
1209 i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
1210 i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
1211 i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
1214 else if( i_code >= 1024 )
1216 i_run = pl_DCT_tab0[(i_code>>8)-4].i_run;
1217 i_length = pl_DCT_tab0[(i_code>>8)-4].i_length;
1218 i_level = pl_DCT_tab0[(i_code>>8)-4].i_level;
1222 i_run = ppl_dct_coef[0][i_code].i_run;
1223 i_length = ppl_dct_coef[0][i_code].i_length;
1224 i_level = ppl_dct_coef[0][i_code].i_level;
1228 RemoveBits( &p_vpar->bit_stream, i_length );
1233 i_run = GetBits( &p_vpar->bit_stream, 6 );
1234 i_level = GetBits( &p_vpar->bit_stream, 12 );
1235 i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
1241 p_mb->pf_idct[i_b] = vdec_SparseIDCT;
1242 p_mb->pi_sparse_pos[i_b] = i_coef;
1246 p_mb->pf_idct[i_b] = vdec_IDCT;
1252 b_sign = GetBits( &p_vpar->bit_stream, 1 );
1263 i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
1264 i_level = ( i_level *
1265 p_vpar->slice.i_quantizer_scale *
1266 ppi_quant[i_type][i_pos] ) >> 5;
1267 p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level;
1269 fprintf( stderr, "Non intra MPEG2 end (%d)\n", i_b );
1271 //p_vpar->picture.b_error = 1;
1274 /*****************************************************************************
1275 * vpar_DecodeMPEG2Intra : decode MPEG-2 intra blocks
1276 *****************************************************************************/
1277 static void vpar_DecodeMPEG2Intra( vpar_thread_t * p_vpar, macroblock_t * p_mb, int i_b )
1283 int i_type, i_quant_type;
1291 boolean_t b_vlc_intra;
1295 /* Lookup Table for the chromatic component */
1296 static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
1297 i_cc = pi_cc_index[i_b];
1299 /* Determine whether it is luminance or not (chrominance) */
1300 i_type = ( i_cc + 1 ) >> 1;
1301 i_quant_type = i_type | (p_vpar->sequence.i_chroma_format == CHROMA_420);
1303 /* Give a pointer to the quantization matrices for intra blocks */
1304 ppi_quant[0] = p_vpar->sequence.intra_quant.pi_matrix;
1305 ppi_quant[1] = p_vpar->sequence.chroma_intra_quant.pi_matrix;
1308 /* Decoding of the DC intra coefficient */
1309 /* The nb of bits to parse depends on i_type */
1310 i_code = ShowBits( &p_vpar->bit_stream, 9 + i_type );
1312 /* To reduce memory occupation, there are two lookup tables
1313 * See InitDCT above */
1314 i_code5 = i_code >> (4+i_type);
1316 /* Shall we lookup in the first or in the second table ? */
1317 i_select = ( i_code5 == 31 );
1318 /* Offset value for looking in the second table */
1319 i_offset = 0x1f0 + ( i_type * 0x1f0 );
1320 i_pos = ( i_code5 * ( ! i_select ) ) + ( ( i_code - i_offset ) * i_select );
1321 i_dct_dc_size = p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_value;
1324 if( !i_type/*i_b < 4*/ )
1327 i_code = ShowBits(&p_vpar->bit_stream, 5);
1330 i_dct_dc_size = pl_dct_dc_lum_init_table_1[i_code].i_value;
1331 i_length = pl_dct_dc_lum_init_table_1[i_code].i_length;
1332 RemoveBits( &p_vpar->bit_stream, i_length);
1336 i_code = ShowBits(&p_vpar->bit_stream, 9) - 0x1f0;
1337 i_dct_dc_size = pl_dct_dc_lum_init_table_2[i_code].i_value;
1338 i_length = pl_dct_dc_lum_init_table_2[i_code].i_length;
1339 RemoveBits( &p_vpar->bit_stream, i_length);
1345 i_code = ShowBits(&p_vpar->bit_stream, 5);
1349 i_dct_dc_size = pl_dct_dc_chrom_init_table_1[i_code].i_value;
1350 i_length = pl_dct_dc_chrom_init_table_1[i_code].i_length;
1351 RemoveBits(&p_vpar->bit_stream, i_length);
1355 i_code = ShowBits(&p_vpar->bit_stream, 10) - 0x3e0;
1356 i_dct_dc_size = pl_dct_dc_chrom_init_table_2[i_code].i_value;
1357 i_length = pl_dct_dc_chrom_init_table_2[i_code].i_length;
1358 RemoveBits( &p_vpar->bit_stream, i_length);
1361 if (i_dct_dc_size==0)
1365 i_dct_dc_diff = GetBits( &p_vpar->bit_stream, i_dct_dc_size);
1366 if ((i_dct_dc_diff & (1<<(i_dct_dc_size-1)))==0)
1367 i_dct_dc_diff-= (1<<i_dct_dc_size) - 1;
1370 /* Dump the variable length code */
1371 //RemoveBits( &p_vpar->bit_stream,
1372 // p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_length );
1374 /* Read the actual code with the good length */
1375 p_vpar->slice.pi_dc_dct_pred[i_cc] += i_dct_dc_diff;
1377 p_mb->ppi_blocks[i_b][0] = ( p_vpar->slice.pi_dc_dct_pred[i_cc] <<
1378 ( 3 - p_vpar->picture.i_intra_dc_precision ) );
1379 i_nc = ( p_vpar->slice.pi_dc_dct_pred[i_cc] != 0 );
1381 //fprintf( stderr, "coucou\n" );
1382 /* Decoding of the AC coefficients */
1385 b_vlc_intra = p_vpar->picture.b_intra_vlc_format;
1386 for( i_parse = 1; /*i_parse < 64*/; i_parse++ )
1388 i_code = ShowBits( &p_vpar->bit_stream, 16 );
1389 if( i_code >= 16384 )
1393 i_run = pl_DCT_tab0a[(i_code>>8)-4].i_run;
1394 i_level = pl_DCT_tab0a[(i_code>>8)-4].i_level;
1395 i_length = pl_DCT_tab0a[(i_code>>8)-4].i_length;
1396 //fprintf( stderr, "**********> %d, %d, %d *******\n", i_run, i_level, (i_code>>8)-4 );
1400 i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
1401 i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
1402 i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
1407 i_run = ppl_dct_coef[b_vlc_intra][i_code].i_run;
1408 i_length = ppl_dct_coef[b_vlc_intra][i_code].i_length;
1409 i_level = ppl_dct_coef[b_vlc_intra][i_code].i_level;
1415 int intra_vlc_format = b_vlc_intra;
1418 if (code>=16384 && !intra_vlc_format)
1419 tab = pl_DCT_tab_ac[(code>>12)-4];
1420 else if (code>=1024)
1422 if (intra_vlc_format)
1423 tab = pl_DCT_tab0a[(code>>8)-4];
1425 tab = pl_DCT_tab0[(code>>8)-4];
1429 if (intra_vlc_format)
1430 tab = pl_DCT_tab1a[(code>>6)-8];
1432 tab = pl_DCT_tab1[(code>>6)-8];
1435 tab = pl_DCT_tab2[(code>>4)-16];
1437 tab = pl_DCT_tab3[(code>>3)-16];
1439 tab = pl_DCT_tab4[(code>>2)-16];
1441 tab = pl_DCT_tab5[(code>>1)-16];
1443 tab = pl_DCT_tab6[code-16];
1446 fprintf( stderr, "invalid Huffman code in Decode_MPEG2_Intra_Block()\n");
1449 if( (i_run != tab.i_run) || (i_length != tab.i_length) || (i_level != tab.i_level) )
1451 fprintf( stderr, "ET M....... !!!\n" );
1460 RemoveBits( &p_vpar->bit_stream, i_length );
1465 i_run = GetBits( &p_vpar->bit_stream, 6 );
1466 i_level = GetBits( &p_vpar->bit_stream, 12 );
1467 /*p_mb->ppi_blocks[i_b][i_parse] = ( b_sign = ( i_level > 2047 ) )
1468 ? ( -4096 + i_level )
1470 i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
1476 p_mb->pf_idct[i_b] = vdec_SparseIDCT;
1477 p_mb->pi_sparse_pos[i_b] = i_coef;
1481 p_mb->pf_idct[i_b] = vdec_IDCT;
1487 b_sign = GetBits( &p_vpar->bit_stream, 1 );
1488 //p_mb->ppi_blocks[i_b][i_parse] = b_sign ? -i_level : i_level;
1490 // fprintf( stderr, "i_code : %d (%d), run : %d, %d, %d (%4x) ", i_code , b_vlc_intra,
1491 // i_run, i_level, i_parse, ShowBits( &p_vpar->bit_stream, 16 ) );
1493 //fprintf( stderr, "- %4x\n",ShowBits( &p_vpar->bit_stream, 16 ) );
1496 fprintf( stderr, "Beuhh dans l'intra decode (%d)\n", i_b );
1503 i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
1504 i_level = ( i_level *
1505 p_vpar->slice.i_quantizer_scale *
1506 ppi_quant[i_quant_type][i_pos] ) >> 4;
1507 p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level;
1510 fprintf( stderr, "MPEG2 end (%d)\n", i_b );
1512 //p_vpar->b_error = 1;