1 /*****************************************************************************
2 * vpar_blocks.c : blocks parsing
3 *****************************************************************************
4 * Copyright (C) 1999, 2000 VideoLAN
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public
19 * License along with this program; if not, write to the
20 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 * Boston, MA 02111-1307, USA.
22 *****************************************************************************/
24 /*****************************************************************************
26 *****************************************************************************/
27 #include <sys/types.h> /* on BSD, uio.h needs types.h */
28 #include <sys/uio.h> /* "input.h" */
37 #include "debug.h" /* XXX?? temporaire, requis par netlist.h */
40 #include "input_netlist.h"
41 #include "decoder_fifo.h"
43 #include "video_output.h"
45 #include "vdec_idct.h"
46 #include "video_decoder.h"
47 #include "vdec_motion.h"
49 #include "vpar_blocks.h"
50 #include "vpar_headers.h"
51 #include "vpar_synchro.h"
52 #include "video_parser.h"
53 #include "video_fifo.h"
55 static int i_count = 0;
58 * Welcome to vpar_blocks.c ! Here's where the heavy processor-critical parsing
59 * task is done. This file is divided in several parts :
60 * - Initialization of the lookup tables
61 * - Decoding of coded blocks
62 * - Decoding of motion vectors
63 * - Decoding of the other macroblock structures
64 * - Picture data parsing management (slices and error handling)
65 * It's a pretty long file. Good luck and have a nice day.
70 * Initialization tables
73 /* Table for coded_block_pattern resolution */
74 static lookup_t pl_coded_pattern[512] =
75 { {MB_ERROR, 0}, {0, 9}, {39, 9}, {27, 9}, {59, 9}, {55, 9}, {47, 9}, {31, 9},
76 {58, 8}, {58, 8}, {54, 8}, {54, 8}, {46, 8}, {46, 8}, {30, 8}, {30, 8},
77 {57, 8}, {57, 8}, {53, 8}, {53, 8}, {45, 8}, {45, 8}, {29, 8}, {29, 8},
78 {38, 8}, {38, 8}, {26, 8}, {26, 8}, {37, 8}, {37, 8}, {25, 8}, {25, 8},
79 {43, 8}, {43, 8}, {23, 8}, {23, 8}, {51, 8}, {51, 8}, {15, 8}, {15, 8},
80 {42, 8}, {42, 8}, {22, 8}, {22, 8}, {50, 8}, {50, 8}, {14, 8}, {14, 8},
81 {41, 8}, {41, 8}, {21, 8}, {21, 8}, {49, 8}, {49, 8}, {13, 8}, {13, 8},
82 {35, 8}, {35, 8}, {19, 8}, {19, 8}, {11, 8}, {11, 8}, {7, 8}, {7, 8},
83 {34, 7}, {34, 7}, {34, 7}, {34, 7}, {18, 7}, {18, 7}, {18, 7}, {18, 7},
84 {10, 7}, {10, 7}, {10, 7}, {10, 7}, {6, 7}, {6, 7}, {6, 7}, {6, 7},
85 {33, 7}, {33, 7}, {33, 7}, {33, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7},
86 {9, 7}, {9, 7}, {9, 7}, {9, 7}, {5, 7}, {5, 7}, {5, 7}, {5, 7},
87 {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6},
88 {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6},
89 {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6},
90 {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6},
91 {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5},
92 {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5},
93 {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5},
94 {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5},
95 {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5},
96 {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5},
97 {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5},
98 {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5},
99 {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5},
100 {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5},
101 {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5},
102 {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5},
103 {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5},
104 {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5},
105 {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5},
106 {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5},
107 {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5},
108 {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5},
109 {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5},
110 {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5},
111 {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5},
112 {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5},
113 {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5},
114 {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5},
115 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
116 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
117 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
118 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
119 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
120 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
121 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
122 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
123 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
124 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
125 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
126 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
127 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
128 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
129 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
130 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
131 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
132 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
133 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
134 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
135 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
136 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
137 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
138 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3} };
140 /* Tables for dc DCT coefficients
141 * Tables are cut in two parts to reduce memory occupation
144 /* Table B-12, dct_dc_size_luminance, codes 00XXX ... 11110 */
145 static lookup_t pl_dct_dc_lum_init_table_1[32] =
146 { {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
147 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
148 {0, 3}, {0, 3}, {0, 3}, {0, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3},
149 {4, 3}, {4, 3}, {4, 3}, {4, 3}, {5, 4}, {5, 4}, {6, 5}, {MB_ERROR, 0}
152 /* Table B-12, dct_dc_size_luminance, codes 111110xxx ... 111111111 */
153 static lookup_t pl_dct_dc_lum_init_table_2[32] =
154 { {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6},
155 {8, 7}, {8, 7}, {8, 7}, {8, 7}, {9, 8}, {9, 8}, {10,9}, {11,9},
156 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0},
157 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0},
158 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0},
159 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}
162 /* Table B-13, dct_dc_size_chrominance, codes 00xxx ... 11110 */
163 static lookup_t pl_dct_dc_chrom_init_table_1[32] =
164 { {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2},
165 {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
166 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
167 {3, 3}, {3, 3}, {3, 3}, {3, 3}, {4, 4}, {4, 4}, {5, 5}, {MB_ERROR, 0}
170 /* Table B-13, dct_dc_size_chrominance, codes 111110xxxx ... 1111111111 */
171 static lookup_t pl_dct_dc_chrom_init_table_2[32] =
172 { {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
173 {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
174 {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7},
175 {8, 8}, {8, 8}, {8, 8}, {8, 8}, {9, 9}, {9, 9}, {10,10}, {11,10}
179 /* Tables for ac DCT coefficients. There are cut in many parts to save space */
180 /* Table B-14, DCT coefficients table zero,
181 * codes 0100 ... 1xxx (used for first (DC) coefficient)
183 static dct_lookup_t pl_DCT_tab_dc[12] =
185 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
186 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1},
187 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1}
190 /* Table B-14, DCT coefficients table zero,
191 * codes 0100 ... 1xxx (used for all other coefficients)
193 static dct_lookup_t pl_DCT_tab_ac[12] =
195 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
196 {DCT_EOB,0,2}, {DCT_EOB,0,2}, {DCT_EOB,0,2}, {DCT_EOB,0,2}, /* EOB */
197 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2}
200 /* Table B-14, DCT coefficients table zero,
201 * codes 000001xx ... 00111xxx
203 static dct_lookup_t pl_DCT_tab0[60] =
205 {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6},
207 {2,2,7}, {2,2,7}, {9,1,7}, {9,1,7},
208 {0,4,7}, {0,4,7}, {8,1,7}, {8,1,7},
209 {7,1,6}, {7,1,6}, {7,1,6}, {7,1,6},
210 {6,1,6}, {6,1,6}, {6,1,6}, {6,1,6},
211 {1,2,6}, {1,2,6}, {1,2,6}, {1,2,6},
212 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
213 {13,1,8}, {0,6,8}, {12,1,8}, {11,1,8},
214 {3,2,8}, {1,3,8}, {0,5,8}, {10,1,8},
215 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
216 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
217 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
218 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
219 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
220 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5}
223 /* Table B-15, DCT coefficients table one,
224 * codes 000001xx ... 11111111
226 static dct_lookup_t pl_DCT_tab0a[252] =
228 {65,0,6}, {65,0,6}, {65,0,6}, {65,0,6}, /* Escape */
229 {7,1,7}, {7,1,7}, {8,1,7}, {8,1,7},
230 {6,1,7}, {6,1,7}, {2,2,7}, {2,2,7},
231 {0,7,6}, {0,7,6}, {0,7,6}, {0,7,6},
232 {0,6,6}, {0,6,6}, {0,6,6}, {0,6,6},
233 {4,1,6}, {4,1,6}, {4,1,6}, {4,1,6},
234 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
235 {1,5,8}, {11,1,8}, {0,11,8}, {0,10,8},
236 {13,1,8}, {12,1,8}, {3,2,8}, {1,4,8},
237 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
238 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
239 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
240 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
241 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
242 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
243 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
244 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
245 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
246 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
247 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
248 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
249 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
250 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
251 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4}, /* EOB */
252 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
253 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
254 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
255 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
256 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
257 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
258 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
259 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
260 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
261 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
262 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
263 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
264 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
265 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
266 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
267 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
268 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
269 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
270 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
271 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
272 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
273 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
274 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
275 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
276 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
277 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
278 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
279 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
280 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
281 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
282 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
283 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
284 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
285 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
286 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
287 {9,1,7}, {9,1,7}, {1,3,7}, {1,3,7},
288 {10,1,7}, {10,1,7}, {0,8,7}, {0,8,7},
289 {0,9,7}, {0,9,7}, {0,12,8}, {0,13,8},
290 {2,3,8}, {4,2,8}, {0,14,8}, {0,15,8}
293 /* Table B-14, DCT coefficients table zero,
294 * codes 0000001000 ... 0000001111
296 static dct_lookup_t pl_DCT_tab1[8] =
298 {16,1,10}, {5,2,10}, {0,7,10}, {2,3,10},
299 {1,4,10}, {15,1,10}, {14,1,10}, {4,2,10}
302 /* Table B-15, DCT coefficients table one,
303 * codes 000000100x ... 000000111x
305 static dct_lookup_t pl_DCT_tab1a[8] =
307 {5,2,9}, {5,2,9}, {14,1,9}, {14,1,9},
308 {2,4,10}, {16,1,10}, {15,1,9}, {15,1,9}
311 /* Table B-14/15, DCT coefficients table zero / one,
312 * codes 000000010000 ... 000000011111
314 static dct_lookup_t pl_DCT_tab2[16] =
316 {0,11,12}, {8,2,12}, {4,3,12}, {0,10,12},
317 {2,4,12}, {7,2,12}, {21,1,12}, {20,1,12},
318 {0,9,12}, {19,1,12}, {18,1,12}, {1,5,12},
319 {3,3,12}, {0,8,12}, {6,2,12}, {17,1,12}
322 /* Table B-14/15, DCT coefficients table zero / one,
323 * codes 0000000010000 ... 0000000011111
325 static dct_lookup_t pl_DCT_tab3[16] =
327 {10,2,13}, {9,2,13}, {5,3,13}, {3,4,13},
328 {2,5,13}, {1,7,13}, {1,6,13}, {0,15,13},
329 {0,14,13}, {0,13,13}, {0,12,13}, {26,1,13},
330 {25,1,13}, {24,1,13}, {23,1,13}, {22,1,13}
333 /* Table B-14/15, DCT coefficients table zero / one,
334 * codes 00000000010000 ... 00000000011111
336 static dct_lookup_t pl_DCT_tab4[16] =
338 {0,31,14}, {0,30,14}, {0,29,14}, {0,28,14},
339 {0,27,14}, {0,26,14}, {0,25,14}, {0,24,14},
340 {0,23,14}, {0,22,14}, {0,21,14}, {0,20,14},
341 {0,19,14}, {0,18,14}, {0,17,14}, {0,16,14}
344 /* Table B-14/15, DCT coefficients table zero / one,
345 * codes 000000000010000 ... 000000000011111
347 static dct_lookup_t pl_DCT_tab5[16] =
349 {0,40,15}, {0,39,15}, {0,38,15}, {0,37,15},
350 {0,36,15}, {0,35,15}, {0,34,15}, {0,33,15},
351 {0,32,15}, {1,14,15}, {1,13,15}, {1,12,15},
352 {1,11,15}, {1,10,15}, {1,9,15}, {1,8,15}
355 /* Table B-14/15, DCT coefficients table zero / one,
356 * codes 0000000000010000 ... 0000000000011111
358 static dct_lookup_t pl_DCT_tab6[16] =
360 {1,18,16}, {1,17,16}, {1,16,16}, {1,15,16},
361 {6,3,16}, {16,2,16}, {15,2,16}, {14,2,16},
362 {13,2,16}, {12,2,16}, {11,2,16}, {31,1,16},
363 {30,1,16}, {29,1,16}, {28,1,16}, {27,1,16}
368 * Initialization of lookup tables
371 /*****************************************************************************
372 * vpar_InitCrop : Initialize the crop table for saturation
373 * (ISO/IEC 13818-2 section 7.4.3)
374 *****************************************************************************/
375 #if defined(MPEG2_COMPLIANT) && !defined(VDEC_DFT)
376 void vpar_InitCrop( vpar_thread_t * p_vpar )
380 p_vpar->pi_crop = p_vpar->pi_crop_buf + 4096;
382 for( i_dummy = -4096; i_dummy < -2048; i_dummy++ )
384 p_vpar->pi_crop[i_dummy] = -2048;
386 for( ; i_dummy < 2047; i_dummy++ )
388 p_vpar->pi_crop[i_dummy] = i_dummy;
390 for( ; i_dummy < 4095; i_dummy++ )
392 p_vpar->pi_crop[i_dummy] = 2047;
397 /*****************************************************************************
398 * vpar_InitMbAddrInc : Initialize the lookup table for mb_addr_inc
399 *****************************************************************************/
401 /* Function for filling up the lookup table for mb_addr_inc */
402 static void __inline__ FillMbAddrIncTable( vpar_thread_t * p_vpar,
403 int i_start, int i_end, int i_step,
404 int * pi_value, int i_length )
407 for( i_pos = i_start ; i_pos < i_end ; i_pos += i_step )
409 for( i_offset = 0 ; i_offset < i_step ; i_offset ++ )
411 p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_value = * pi_value;
412 p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_length = i_length;
418 /* Function that initialize the table using the last one */
419 void vpar_InitMbAddrInc( vpar_thread_t * p_vpar )
424 for( i_dummy = 0 ; i_dummy < 8 ; i_dummy++ )
426 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
427 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
430 p_vpar->pl_mb_addr_inc[8].i_value = MB_ADDRINC_ESCAPE;
431 p_vpar->pl_mb_addr_inc[8].i_length = 11;
433 for( i_dummy = 9 ; i_dummy < 15 ; i_dummy ++ )
435 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
436 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
439 p_vpar->pl_mb_addr_inc[15].i_value = MB_ADDRINC_STUFFING;
440 p_vpar->pl_mb_addr_inc[15].i_length = 11;
442 for( i_dummy = 16; i_dummy < 24; i_dummy++ )
444 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
445 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
450 FillMbAddrIncTable( p_vpar, 24, 36, 1, &i_value, 11 );
451 FillMbAddrIncTable( p_vpar, 36, 48, 2, &i_value, 10 );
452 FillMbAddrIncTable( p_vpar, 48, 96, 8, &i_value, 8 );
453 FillMbAddrIncTable( p_vpar, 96, 128, 16, &i_value, 7 );
454 FillMbAddrIncTable( p_vpar, 128, 256, 64, &i_value, 5 );
455 FillMbAddrIncTable( p_vpar, 256, 512, 128, &i_value, 4 );
456 FillMbAddrIncTable( p_vpar, 512, 1024, 256, &i_value, 3 );
457 FillMbAddrIncTable( p_vpar, 1024, 2048, 1024, &i_value, 1 );
460 /*****************************************************************************
461 * vpar_Init*MBType : Initialize lookup table for the Macroblock type
462 *****************************************************************************/
464 /* Fonction for filling up the tables */
465 static void __inline__ FillMBType( vpar_thread_t * p_vpar,
474 for( i_dummy = i_start ; i_dummy < i_end ; i_dummy++ )
476 p_vpar->ppl_mb_type[i_mb_type][i_dummy].i_value = i_value;
477 p_vpar->ppl_mb_type[i_mb_type][i_dummy].i_length = i_length;
481 /* Fonction that fills the table for P MB_Type */
482 void vpar_InitPMBType( vpar_thread_t * p_vpar )
484 FillMBType( p_vpar, 0, 32, 64, MB_MOTION_FORWARD|MB_PATTERN, 1 );
485 FillMBType( p_vpar, 0, 16, 32, MB_PATTERN, 2 );
486 FillMBType( p_vpar, 0, 8, 16, MB_MOTION_FORWARD, 3 );
487 FillMBType( p_vpar, 0, 6, 8, MB_INTRA, 5 );
488 FillMBType( p_vpar, 0, 4, 6, MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN, 5 );
489 FillMBType( p_vpar, 0, 2, 4, MB_QUANT|MB_PATTERN, 5 );
490 p_vpar->ppl_mb_type[0][1].i_value = MB_QUANT|MB_INTRA;
491 p_vpar->ppl_mb_type[0][1].i_length = 6;
492 p_vpar->ppl_mb_type[0][0].i_value = MB_ERROR;
493 p_vpar->ppl_mb_type[0][0].i_length = 0;
496 /* Fonction that fills the table for B MB_Type */
497 void vpar_InitBMBType( vpar_thread_t * p_vpar )
499 FillMBType( p_vpar, 1, 48, 64, MB_MOTION_FORWARD
500 |MB_MOTION_BACKWARD|MB_PATTERN, 2 );
501 FillMBType( p_vpar, 1, 32, 48, MB_MOTION_FORWARD|MB_MOTION_BACKWARD, 2 );
502 FillMBType( p_vpar, 1, 24, 32, MB_MOTION_BACKWARD|MB_PATTERN, 3 );
503 FillMBType( p_vpar, 1, 16, 24, MB_MOTION_BACKWARD, 3 );
504 FillMBType( p_vpar, 1, 12, 16, MB_MOTION_FORWARD|MB_PATTERN, 4 );
505 FillMBType( p_vpar, 1, 8, 12, MB_MOTION_FORWARD, 4 );
506 FillMBType( p_vpar, 1, 6, 8, MB_INTRA, 5 );
507 FillMBType( p_vpar, 1, 4, 6, MB_QUANT|MB_MOTION_FORWARD
508 |MB_MOTION_BACKWARD|MB_PATTERN, 5 );
509 p_vpar->ppl_mb_type[1][3].i_value = MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN;
510 p_vpar->ppl_mb_type[1][3].i_length = 6;
511 p_vpar->ppl_mb_type[1][2].i_value = MB_QUANT|MB_MOTION_BACKWARD|MB_PATTERN;
512 p_vpar->ppl_mb_type[1][2].i_length = 6;
513 p_vpar->ppl_mb_type[1][1].i_value = MB_QUANT|MB_INTRA;
514 p_vpar->ppl_mb_type[1][1].i_length = 6;
515 p_vpar->ppl_mb_type[1][0].i_value =MB_ERROR;
516 p_vpar->ppl_mb_type[1][0].i_length = 0;
520 /*****************************************************************************
521 * vpar_InitDCTTables : Initialize tables giving the length of the dct
522 * coefficient from the vlc code
523 *****************************************************************************/
525 /* First fonction for filling the table */
526 static void __inline__ FillDCTTable( dct_lookup_t * p_tab_dest, dct_lookup_t * p_tab_src,
527 int i_step, int i_nb_elem, int i_offset )
529 int i_dummy, i_dummy2;
531 for( i_dummy=0 ; i_dummy < i_nb_elem ; i_dummy++ )
533 for( i_dummy2=0 ; i_dummy2 < i_step ; i_dummy2++ )
535 p_tab_dest[(i_dummy+i_offset)*i_step+i_dummy2] = p_tab_src[i_dummy];
541 /* Fonction that actually fills the table or create the pointers */
542 void vpar_InitDCTTables( vpar_thread_t * p_vpar )
544 /* Tables are cut in two parts to reduce memory occupation */
545 p_vpar->pppl_dct_dc_size[0][0] = pl_dct_dc_lum_init_table_1;
546 p_vpar->pppl_dct_dc_size[0][1] = pl_dct_dc_lum_init_table_2;
547 p_vpar->pppl_dct_dc_size[1][0] = pl_dct_dc_chrom_init_table_1;
548 p_vpar->pppl_dct_dc_size[1][1] = pl_dct_dc_chrom_init_table_2;
550 /* XXX?? MB_ERROR is replaced by 0 because if we use -1 we
551 * can block in DecodeMPEG2Intra and others */
552 memset( p_vpar->ppl_dct_coef[0], 0, 16 );
553 memset( p_vpar->ppl_dct_coef[1], 0, 16 );
555 /* For table B14 & B15, we have a pointer to tables */
556 /* We fill the table thanks to the fonction defined above */
557 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab0, 256, 60, 4 );
558 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab1, 64, 8, 8 );
559 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab2, 16, 16, 16 );
560 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab3, 8, 16, 16 );
561 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab4, 4, 16, 16 );
562 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab5, 2, 16, 16 );
563 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab6, 1, 16, 16 );
565 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab0a, 256, 60, 4 );
566 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab1a, 64, 8, 8 );
567 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab2, 16, 16, 16 );
568 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab3, 8, 16, 16 );
569 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab4, 4, 16, 16 );
570 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab5, 2, 16, 16 );
571 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab6, 1, 16, 16 );
579 /*****************************************************************************
580 * DecodeMPEG1NonIntra : decode MPEG-1 non-intra blocks
581 *****************************************************************************/
582 static __inline__ void DecodeMPEG1NonIntra( vpar_thread_t * p_vpar,
583 macroblock_t * p_mb, int i_b,
584 int i_chroma_format )
587 if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
589 /* Remove end_of_macroblock (always 1, prevents startcode emulation)
590 * ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
591 RemoveBits( &p_vpar->bit_stream, 1 );
595 /*****************************************************************************
596 * DecodeMPEG1Intra : decode MPEG-1 intra blocks
597 *****************************************************************************/
598 static __inline__ void DecodeMPEG1Intra( vpar_thread_t * p_vpar,
599 macroblock_t * p_mb, int i_b ,
600 int i_chroma_format )
603 if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
605 /* Remove end_of_macroblock (always 1, prevents startcode emulation)
606 * ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
607 RemoveBits( &p_vpar->bit_stream, 1 );
611 /*****************************************************************************
612 * DecodeMPEG2NonIntra : decode MPEG-2 non-intra blocks
613 *****************************************************************************/
614 static __inline__ void DecodeMPEG2NonIntra( vpar_thread_t * p_vpar,
615 macroblock_t * p_mb, int i_b,
616 int i_chroma_format )
631 /* Lookup Table for the chromatic component */
632 static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
634 i_cc = pi_cc_index[i_b];
636 /* Determine whether it is luminance or not (chrominance) */
637 i_type = ( i_cc + 1 ) >> 1;
639 /* Give a pointer to the quantization matrices for intra blocks */
640 if( (i_chroma_format == CHROMA_420) || (!i_type) )
642 pi_quant = p_vpar->sequence.nonintra_quant.pi_matrix;
646 pi_quant = p_vpar->sequence.chroma_nonintra_quant.pi_matrix;
649 /* Decoding of the AC coefficients */
653 for( i_parse = 0; !p_vpar->b_die; i_parse++ )
655 i_code = ShowBits( &p_vpar->bit_stream, 16 );
656 if( i_code >= 16384 )
660 i_run = pl_DCT_tab_dc[(i_code>>12)-4].i_run;
661 i_level = pl_DCT_tab_dc[(i_code>>12)-4].i_level;
662 i_length = pl_DCT_tab_dc[(i_code>>12)-4].i_length;
666 i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
667 i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
668 i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
671 else if( i_code >= 1024 )
673 i_run = pl_DCT_tab0[(i_code>>8)-4].i_run;
674 i_length = pl_DCT_tab0[(i_code>>8)-4].i_length;
675 i_level = pl_DCT_tab0[(i_code>>8)-4].i_level;
679 i_run = p_vpar->ppl_dct_coef[0][i_code].i_run;
680 i_length = p_vpar->ppl_dct_coef[0][i_code].i_length;
681 i_level = p_vpar->ppl_dct_coef[0][i_code].i_level;
685 RemoveBits( &p_vpar->bit_stream, i_length );
690 i_run = GetBits( &p_vpar->bit_stream, 6 );
691 i_level = GetBits( &p_vpar->bit_stream, 12 );
692 i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
697 /* The MMX IDCT has a precision problem with non-intra
699 p_mb->ppi_blocks[i_b][0] += 4;
703 p_mb->pf_idct[i_b] = vdec_SparseIDCT;
704 p_mb->pi_sparse_pos[i_b] = i_coef;
708 p_mb->pf_idct[i_b] = vdec_IDCT;
714 b_sign = GetBits( &p_vpar->bit_stream, 1 );
725 i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
726 i_level = ( ((i_level << 1) + 1) * p_vpar->mb.i_quantizer_scale
727 * pi_quant[i_pos] ) >> 5;
728 p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level;
731 intf_ErrMsg("vpar error: DCT coeff (non-intra) is out of bounds\n");
732 p_vpar->picture.b_error = 1;
735 /*****************************************************************************
736 * DecodeMPEG2Intra : decode MPEG-2 intra blocks
737 *****************************************************************************/
738 static __inline__ void DecodeMPEG2Intra( vpar_thread_t * p_vpar,
739 macroblock_t * p_mb, int i_b,
740 int i_chroma_format )
754 boolean_t b_vlc_intra;
758 /* Lookup Table for the chromatic component */
759 static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
760 i_cc = pi_cc_index[i_b];
762 /* Determine whether it is luminance or not (chrominance) */
763 i_type = ( i_cc + 1 ) >> 1;
765 /* Give a pointer to the quantization matrices for intra blocks */
766 if( (i_chroma_format == CHROMA_420) || (!i_type) )
768 pi_quant = p_vpar->sequence.intra_quant.pi_matrix;
772 pi_quant = p_vpar->sequence.chroma_intra_quant.pi_matrix;
776 /* Decoding of the DC intra coefficient */
777 /* The nb of bits to parse depends on i_type */
778 i_code = ShowBits( &p_vpar->bit_stream, 9 + i_type );
780 /* To reduce memory occupation, there are two lookup tables
781 * See InitDCT above */
782 i_code5 = i_code >> (4+i_type);
784 /* Shall we lookup in the first or in the second table ? */
785 i_select = ( i_code5 == 31 );
786 /* Offset value for looking in the second table */
787 i_offset = 0x1f0 + ( i_type * 0x1f0 );
788 i_pos = ( i_code5 * ( ! i_select ) ) + ( ( i_code - i_offset ) * i_select );
789 i_dct_dc_size = p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_value;
792 if( !i_type/*i_b < 4*/ )
795 i_code = ShowBits(&p_vpar->bit_stream, 5);
798 i_dct_dc_size = pl_dct_dc_lum_init_table_1[i_code].i_value;
799 i_length = pl_dct_dc_lum_init_table_1[i_code].i_length;
800 RemoveBits( &p_vpar->bit_stream, i_length);
804 i_code = ShowBits(&p_vpar->bit_stream, 9) - 0x1f0;
805 i_dct_dc_size = pl_dct_dc_lum_init_table_2[i_code].i_value;
806 i_length = pl_dct_dc_lum_init_table_2[i_code].i_length;
807 RemoveBits( &p_vpar->bit_stream, i_length);
813 i_code = ShowBits(&p_vpar->bit_stream, 5);
817 i_dct_dc_size = pl_dct_dc_chrom_init_table_1[i_code].i_value;
818 i_length = pl_dct_dc_chrom_init_table_1[i_code].i_length;
819 RemoveBits(&p_vpar->bit_stream, i_length);
823 i_code = ShowBits(&p_vpar->bit_stream, 10) - 0x3e0;
824 i_dct_dc_size = pl_dct_dc_chrom_init_table_2[i_code].i_value;
825 i_length = pl_dct_dc_chrom_init_table_2[i_code].i_length;
826 RemoveBits( &p_vpar->bit_stream, i_length);
829 if (i_dct_dc_size==0)
833 i_dct_dc_diff = GetBits( &p_vpar->bit_stream, i_dct_dc_size);
834 if ((i_dct_dc_diff & (1<<(i_dct_dc_size-1)))==0)
835 i_dct_dc_diff-= (1<<i_dct_dc_size) - 1;
838 /* Dump the variable length code */
839 //RemoveBits( &p_vpar->bit_stream,
840 // p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_length );
842 /* Read the actual code with the good length */
843 p_vpar->mb.pi_dc_dct_pred[i_cc] += i_dct_dc_diff;
845 p_mb->ppi_blocks[i_b][0] = ( p_vpar->mb.pi_dc_dct_pred[i_cc] <<
846 ( 3 - p_vpar->picture.i_intra_dc_precision ) );
848 i_nc = ( p_vpar->mb.pi_dc_dct_pred[i_cc] != 0 );
850 /* Decoding of the AC coefficients */
853 b_vlc_intra = p_vpar->picture.b_intra_vlc_format;
854 for( i_parse = 1; !p_vpar->b_die/*i_parse < 64*/; i_parse++ )
856 i_code = ShowBits( &p_vpar->bit_stream, 16 );
857 if( i_code >= 16384 )
861 i_run = pl_DCT_tab0a[(i_code>>8)-4].i_run;
862 i_level = pl_DCT_tab0a[(i_code>>8)-4].i_level;
863 i_length = pl_DCT_tab0a[(i_code>>8)-4].i_length;
864 //fprintf( stderr, "**********> %d, %d, %d *******\n", i_run, i_level, (i_code>>8)-4 );
868 i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
869 i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
870 i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
875 i_run = p_vpar->ppl_dct_coef[b_vlc_intra][i_code].i_run;
876 i_length = p_vpar->ppl_dct_coef[b_vlc_intra][i_code].i_length;
877 i_level = p_vpar->ppl_dct_coef[b_vlc_intra][i_code].i_level;
883 int intra_vlc_format = b_vlc_intra;
886 if (code>=16384 && !intra_vlc_format)
887 tab = pl_DCT_tab_ac[(code>>12)-4];
890 if (intra_vlc_format)
891 tab = pl_DCT_tab0a[(code>>8)-4];
893 tab = pl_DCT_tab0[(code>>8)-4];
897 if (intra_vlc_format)
898 tab = pl_DCT_tab1a[(code>>6)-8];
900 tab = pl_DCT_tab1[(code>>6)-8];
903 tab = pl_DCT_tab2[(code>>4)-16];
905 tab = pl_DCT_tab3[(code>>3)-16];
907 tab = pl_DCT_tab4[(code>>2)-16];
909 tab = pl_DCT_tab5[(code>>1)-16];
911 tab = pl_DCT_tab6[code-16];
914 fprintf( stderr, "invalid Huffman code in Decode_MPEG2_Intra_Block()\n");
917 if( (i_run != tab.i_run) || (i_length != tab.i_length) || (i_level != tab.i_level) )
919 fprintf( stderr, "ET M....... !!!\n" );
928 RemoveBits( &p_vpar->bit_stream, i_length );
933 i_run = GetBits( &p_vpar->bit_stream, 6 );
934 i_level = GetBits( &p_vpar->bit_stream, 12 );
935 /*p_mb->ppi_blocks[i_b][i_parse] = ( b_sign = ( i_level > 2047 ) )
936 ? ( -4096 + i_level )
938 i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
944 p_mb->pf_idct[i_b] = vdec_SparseIDCT;
945 p_mb->pi_sparse_pos[i_b] = i_coef;
949 p_mb->pf_idct[i_b] = vdec_IDCT;
955 b_sign = GetBits( &p_vpar->bit_stream, 1 );
967 i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
968 i_level = ( i_level *
969 p_vpar->mb.i_quantizer_scale *
970 pi_quant[i_pos] ) >> 4;
971 p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level;
974 intf_ErrMsg("vpar error: DCT coeff (intra) is out of bounds\n");
975 p_vpar->picture.b_error = 1;
983 /****************************************************************************
984 * MotionCode : Parse the next motion code
985 ****************************************************************************/
986 static __inline__ int MotionCode( vpar_thread_t * p_vpar )
989 static lookup_t pl_mv_tab0[8] =
990 { {-1,0}, {3,3}, {2,2}, {2,2}, {1,1}, {1,1}, {1,1}, {1,1} };
991 /* Table B-10, motion_code, codes 0000011 ... 000011x */
992 static lookup_t pl_mv_tab1[8] =
993 { {-1,0}, {-1,0}, {-1,0}, {7,6}, {6,6}, {5,6}, {4,5}, {4,5} };
994 /* Table B-10, motion_code, codes 0000001100 ... 000001011x */
995 static lookup_t pl_mv_tab2[12] = {
996 {16,9}, {15,9}, {14,9}, {13,9},
997 {12,9}, {11,9}, {10,8}, {10,8},
998 {9,8}, {9,8}, {8,8}, {8,8} };
1000 if( GetBits( &p_vpar->bit_stream, 1 ) )
1004 if( (i_code = ShowBits( &p_vpar->bit_stream, 9) ) >= 64 )
1007 RemoveBits( &p_vpar->bit_stream, pl_mv_tab0[i_code].i_length );
1008 return( GetBits( &p_vpar->bit_stream, 1 ) ?
1009 -pl_mv_tab0[i_code].i_value : pl_mv_tab0[i_code].i_value );
1015 RemoveBits( &p_vpar->bit_stream, pl_mv_tab1[i_code].i_length );
1016 return( GetBits( &p_vpar->bit_stream, 1 ) ?
1017 -pl_mv_tab1[i_code].i_value : pl_mv_tab1[i_code].i_value );
1020 if( (i_code -= 12) < 0 )
1022 p_vpar->picture.b_error = 1;
1023 intf_DbgMsg( "vpar debug: Invalid motion_vector code\n" );
1027 RemoveBits( &p_vpar->bit_stream, pl_mv_tab2[i_code].i_length );
1028 return( GetBits( &p_vpar->bit_stream, 1 ) ?
1029 -pl_mv_tab2[i_code].i_value : pl_mv_tab2[i_code].i_value );
1032 /****************************************************************************
1033 * DecodeMotionVector : Decode a motion_vector
1034 ****************************************************************************/
1035 static __inline__ void DecodeMotionVector( int * pi_prediction, int i_r_size,
1036 int i_motion_code, int i_motion_residual, int i_full_pel )
1038 int i_limit, i_vector;
1040 /* ISO/IEC 13818-1 section 7.6.3.1 */
1041 i_limit = 16 << i_r_size;
1042 i_vector = *pi_prediction >> i_full_pel;
1044 if( i_motion_code > 0 )
1046 i_vector += ((i_motion_code-1) << i_r_size) + i_motion_residual + 1;
1047 if( i_vector >= i_limit )
1048 i_vector -= i_limit + i_limit;
1050 else if( i_motion_code < 0 )
1052 i_vector -= ((-i_motion_code-1) << i_r_size) + i_motion_residual + 1;
1053 if( i_vector < -i_limit )
1054 i_vector += i_limit + i_limit;
1056 *pi_prediction = i_vector << i_full_pel;
1059 /****************************************************************************
1060 * MotionVector : Parse the next motion_vector field
1061 ****************************************************************************/
1062 static __inline__ void MotionVector( vpar_thread_t * p_vpar,
1063 macroblock_t * p_mb, int i_r,
1064 int i_s, int i_full_pel, int i_structure )
1066 int i_motion_code, i_motion_residual;
1068 int pi_dm_vector[2];
1070 i_r_size = p_vpar->picture.ppi_f_code[i_s][0] - 1;
1071 i_motion_code = MotionCode( p_vpar );
1072 i_motion_residual = (i_r_size != 0 && i_motion_code != 0) ?
1073 GetBits( &p_vpar->bit_stream, i_r_size) : 0;
1074 DecodeMotionVector( &p_vpar->mb.pppi_pmv[i_r][i_s][0], i_r_size,
1075 i_motion_code, i_motion_residual, i_full_pel );
1076 p_mb->pppi_motion_vectors[i_r][i_s][0] = p_vpar->mb.pppi_pmv[i_r][i_s][0];
1078 if( p_vpar->mb.b_dmv )
1080 if( GetBits(&p_vpar->bit_stream, 1) )
1082 pi_dm_vector[0] = GetBits( &p_vpar->bit_stream, 1 ) ? -1 : 1;
1086 pi_dm_vector[0] = 0;
1090 i_r_size = p_vpar->picture.ppi_f_code[i_s][1]-1;
1091 i_motion_code = MotionCode( p_vpar );
1092 i_motion_residual = (i_r_size != 0 && i_motion_code != 0) ?
1093 GetBits( &p_vpar->bit_stream, i_r_size) : 0;
1096 if( (p_vpar->mb.i_mv_format == MOTION_FIELD)
1097 && (i_structure == FRAME_STRUCTURE) )
1099 p_vpar->mb.pppi_pmv[i_r][i_s][1] >>= 1;
1102 DecodeMotionVector( &p_vpar->mb.pppi_pmv[i_r][i_s][1], i_r_size,
1103 i_motion_code, i_motion_residual, i_full_pel );
1105 if( (p_vpar->mb.i_mv_format == MOTION_FIELD)
1106 && (i_structure == FRAME_STRUCTURE) )
1107 p_vpar->mb.pppi_pmv[i_r][i_s][1] <<= 1;
1109 p_mb->pppi_motion_vectors[i_r][i_s][1] = p_vpar->mb.pppi_pmv[i_r][i_s][1];
1111 if( p_vpar->mb.b_dmv )
1113 if( GetBits(&p_vpar->bit_stream, 1) )
1115 pi_dm_vector[1] = GetBits( &p_vpar->bit_stream, 1 ) ? -1 : 1;
1119 pi_dm_vector[1] = 0;
1122 /* Dual Prime Arithmetic (ISO/IEC 13818-2 section 7.6.3.6). */
1124 #define i_mv_x p_mb->pppi_motion_vectors[0][0][0]
1125 if( i_structure == FRAME_STRUCTURE )
1127 #define i_mv_y (p_mb->pppi_motion_vectors[0][0][1] << 1)
1128 if( p_vpar->picture.b_top_field_first )
1130 /* vector for prediction of top field from bottom field */
1131 p_mb->ppi_dmv[0][0] = ((i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1132 p_mb->ppi_dmv[0][1] = ((i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] - 1;
1134 /* vector for prediction of bottom field from top field */
1135 p_mb->ppi_dmv[1][0] = ((3*i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1136 p_mb->ppi_dmv[1][1] = ((3*i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] + 1;
1140 /* vector for prediction of top field from bottom field */
1141 p_mb->ppi_dmv[0][0] = ((3*i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1142 p_mb->ppi_dmv[0][1] = ((3*i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] - 1;
1144 /* vector for prediction of bottom field from top field */
1145 p_mb->ppi_dmv[1][0] = ((i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1146 p_mb->ppi_dmv[1][1] = ((i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] + 1;
1152 #define i_mv_y p_mb->pppi_motion_vectors[0][0][1]
1153 /* vector for prediction from field of opposite 'parity' */
1154 p_mb->ppi_dmv[0][0] = ((i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1155 p_mb->ppi_dmv[0][1] = ((i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1];
1157 /* correct for vertical field shift */
1158 if( p_vpar->picture.i_structure == TOP_FIELD )
1159 p_mb->ppi_dmv[0][1]--;
1161 p_mb->ppi_dmv[0][1]++;
1168 /*****************************************************************************
1169 * DecodeMVMPEG1 : Parse the next MPEG-1 motion vectors
1170 *****************************************************************************/
1171 static __inline__ void DecodeMVMPEG1( vpar_thread_t * p_vpar,
1172 macroblock_t * p_mb, int i_s, int i_structure )
1174 MotionVector( p_vpar, p_mb, 0, i_s,
1175 p_vpar->picture.pb_full_pel_vector[i_s], i_structure );
1178 /*****************************************************************************
1179 * DecodeMVMPEG2 : Parse the next MPEG-2 motion_vectors field
1180 *****************************************************************************/
1181 static __inline__ void DecodeMVMPEG2( vpar_thread_t * p_vpar,
1182 macroblock_t * p_mb, int i_s, int i_structure )
1184 if( p_vpar->mb.i_mv_count == 1 )
1186 if( p_vpar->mb.i_mv_format == MOTION_FIELD && !p_vpar->mb.b_dmv )
1188 p_mb->ppi_field_select[0][i_s] = p_mb->ppi_field_select[1][i_s]
1189 = GetBits( &p_vpar->bit_stream, 1 );
1191 MotionVector( p_vpar, p_mb, 0, i_s, 0, i_structure );
1192 p_vpar->mb.pppi_pmv[1][i_s][0] = p_vpar->mb.pppi_pmv[0][i_s][0];
1193 p_vpar->mb.pppi_pmv[1][i_s][1] = p_vpar->mb.pppi_pmv[0][i_s][1];
1194 p_mb->pppi_motion_vectors[1][i_s][0] = p_vpar->mb.pppi_pmv[0][i_s][0];
1195 p_mb->pppi_motion_vectors[1][i_s][1] = p_vpar->mb.pppi_pmv[0][i_s][1];
1199 p_mb->ppi_field_select[0][i_s] = GetBits( &p_vpar->bit_stream, 1 );
1200 MotionVector( p_vpar, p_mb, 0, i_s, 0, i_structure );
1201 p_mb->ppi_field_select[1][i_s] = GetBits( &p_vpar->bit_stream, 1 );
1202 MotionVector( p_vpar, p_mb, 1, i_s, 0, i_structure );
1208 * Macroblock information structures
1211 /*****************************************************************************
1212 * MacroblockAddressIncrement : Get the macroblock_address_increment field
1213 *****************************************************************************/
1214 static __inline__ int MacroblockAddressIncrement( vpar_thread_t * p_vpar )
1217 /* Index in the lookup table mb_addr_inc */
1218 int i_index = ShowBits( &p_vpar->bit_stream, 11 );
1220 /* Test the presence of the escape character */
1221 while( i_index == 8 )
1223 RemoveBits( &p_vpar->bit_stream, 11 );
1225 i_index = ShowBits( &p_vpar->bit_stream, 11 );
1228 /* Affect the value from the lookup table */
1229 i_addr_inc += p_vpar->pl_mb_addr_inc[i_index].i_value;
1231 /* Dump the good number of bits */
1232 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_mb_addr_inc[i_index].i_length );
1237 /*****************************************************************************
1238 * IMBType : macroblock_type in I pictures
1239 *****************************************************************************/
1240 static __inline__ int IMBType( vpar_thread_t * p_vpar )
1242 /* Take two bits for testing */
1243 int i_type = ShowBits( &p_vpar->bit_stream, 2 );
1245 /* Lookup table for macroblock_type */
1246 static lookup_t pl_mb_Itype[4] = { {MB_ERROR, 0},
1247 {MB_QUANT|MB_INTRA, 2},
1250 /* Dump the good number of bits */
1251 RemoveBits( &p_vpar->bit_stream, pl_mb_Itype[i_type].i_length );
1252 return pl_mb_Itype[i_type].i_value;
1255 /*****************************************************************************
1256 * PMBType : macroblock_type in P pictures
1257 *****************************************************************************/
1258 static __inline__ int PMBType( vpar_thread_t * p_vpar )
1260 /* Testing on 6 bits */
1261 int i_type = ShowBits( &p_vpar->bit_stream, 6 );
1263 /* Dump the good number of bits */
1264 RemoveBits( &p_vpar->bit_stream, p_vpar->ppl_mb_type[0][i_type].i_length );
1265 /* return the value from the lookup table for P type */
1266 return p_vpar->ppl_mb_type[0][i_type].i_value;
1269 /*****************************************************************************
1270 * BMBType : macroblock_type in B pictures
1271 *****************************************************************************/
1272 static __inline__ int BMBType( vpar_thread_t * p_vpar )
1274 /* Testing on 6 bits */
1275 int i_type = ShowBits( &p_vpar->bit_stream, 6 );
1277 /* Dump the good number of bits */
1278 RemoveBits( &p_vpar->bit_stream, p_vpar->ppl_mb_type[1][i_type].i_length );
1280 /* return the value from the lookup table for B type */
1281 return p_vpar->ppl_mb_type[1][i_type].i_value;
1284 /*****************************************************************************
1285 * DMBType : macroblock_type in D pictures
1286 *****************************************************************************/
1287 static __inline__ int DMBType( vpar_thread_t * p_vpar )
1289 return GetBits( &p_vpar->bit_stream, 1 );
1292 /*****************************************************************************
1293 * CodedPattern420 : coded_block_pattern with 4:2:0 chroma
1294 *****************************************************************************/
1295 static __inline__ int CodedPattern420( vpar_thread_t * p_vpar )
1297 /* Take the max 9 bits length vlc code for testing */
1298 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1300 /* Trash the good number of bits read in the lookup table */
1301 RemoveBits( &p_vpar->bit_stream, pl_coded_pattern[i_vlc].i_length );
1303 /* return the value from the vlc table */
1304 return pl_coded_pattern[i_vlc].i_value;
1307 /*****************************************************************************
1308 * CodedPattern422 : coded_block_pattern with 4:2:2 chroma
1309 *****************************************************************************/
1310 static __inline__ int CodedPattern422( vpar_thread_t * p_vpar )
1312 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1314 RemoveBits( &p_vpar->bit_stream, pl_coded_pattern[i_vlc].i_length );
1316 /* Supplementary 2 bits long code for 4:2:2 format */
1317 return pl_coded_pattern[i_vlc].i_value |
1318 (GetBits( &p_vpar->bit_stream, 2 ) << 6);
1321 /*****************************************************************************
1322 * CodedPattern444 : coded_block_pattern with 4:4:4 chroma
1323 *****************************************************************************/
1324 static __inline__ int CodedPattern444( vpar_thread_t * p_vpar )
1326 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1328 RemoveBits( &p_vpar->bit_stream, pl_coded_pattern[i_vlc].i_length );
1330 return pl_coded_pattern[i_vlc].i_value |
1331 (GetBits( &p_vpar->bit_stream, 6 ) << 6);
1334 /*****************************************************************************
1335 * InitMacroblock : Initialize macroblock values
1336 *****************************************************************************/
1337 static __inline__ void InitMacroblock( vpar_thread_t * p_vpar,
1338 macroblock_t * p_mb, int i_coding_type,
1339 int i_chroma_format,
1341 boolean_t b_second_field )
1343 p_mb->i_chroma_nb_blocks = 1 << i_chroma_format;
1344 p_mb->p_picture = p_vpar->picture.p_picture;
1346 if( i_coding_type == B_CODING_TYPE )
1347 p_mb->p_backward = p_vpar->sequence.p_backward;
1349 p_mb->p_backward = NULL;
1350 if( (i_coding_type == P_CODING_TYPE) || (i_coding_type == B_CODING_TYPE) )
1351 p_mb->p_forward = p_vpar->sequence.p_forward;
1353 p_mb->p_forward = NULL;
1355 p_mb->i_l_x = p_vpar->mb.i_l_x;
1356 p_mb->i_c_x = p_vpar->mb.i_c_x;
1357 p_mb->i_motion_l_y = p_vpar->mb.i_l_y;
1358 p_mb->i_motion_c_y = p_vpar->mb.i_c_y;
1359 if( (p_mb->b_motion_field = (i_structure == BOTTOM_FIELD)) )
1361 p_mb->i_motion_l_y--;
1362 p_mb->i_motion_c_y--;
1364 p_mb->i_addb_l_stride = (p_mb->i_l_stride = p_vpar->picture.i_l_stride) - 8;
1365 p_mb->i_addb_c_stride = (p_mb->i_c_stride = p_vpar->picture.i_c_stride) - 8;
1366 p_mb->b_P_second = ( b_second_field && i_coding_type == P_CODING_TYPE );
1369 /*****************************************************************************
1370 * UpdateContext : Update the p_vpar contextual values
1371 *****************************************************************************/
1372 static __inline__ void UpdateContext( vpar_thread_t * p_vpar, int i_structure )
1374 /* Update macroblock real position. */
1375 p_vpar->mb.i_l_x += 16;
1376 p_vpar->mb.i_l_y += (p_vpar->mb.i_l_x / p_vpar->sequence.i_width)
1377 * (2 - (i_structure == FRAME_STRUCTURE)) * 16;
1378 p_vpar->mb.i_l_x %= p_vpar->sequence.i_width;
1380 p_vpar->mb.i_c_x += p_vpar->sequence.i_chroma_mb_width;
1381 p_vpar->mb.i_c_y += (p_vpar->mb.i_c_x / p_vpar->sequence.i_chroma_width)
1382 * (2 - (i_structure == FRAME_STRUCTURE))
1383 * p_vpar->sequence.i_chroma_mb_height;
1384 p_vpar->mb.i_c_x %= p_vpar->sequence.i_chroma_width;
1387 /*****************************************************************************
1388 * SkippedMacroblock : Generate a skipped macroblock with NULL motion vector
1389 *****************************************************************************/
1390 static __inline__ void SkippedMacroblock( vpar_thread_t * p_vpar, int i_mb,
1391 int i_mb_base, int i_coding_type,
1392 int i_chroma_format,
1394 boolean_t b_second_field )
1396 macroblock_t * p_mb;
1398 static f_motion_t pf_motion_skipped[4][4] =
1400 {NULL, NULL, NULL, NULL},
1401 {NULL, vdec_MotionFieldField420, vdec_MotionFieldField420,
1402 vdec_MotionFrameFrame420},
1403 {NULL, vdec_MotionFieldField422, vdec_MotionFieldField422,
1404 vdec_MotionFrameFrame422},
1405 {NULL, vdec_MotionFieldField444, vdec_MotionFieldField444,
1406 vdec_MotionFrameFrame444},
1409 if( i_coding_type == I_CODING_TYPE )
1411 intf_DbgMsg("vpar error: skipped macroblock in I-picture\n");
1412 p_vpar->picture.b_error = 1;
1416 if( (p_mb = vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
1422 p_vpar->picture.pp_mb[i_mb_base + i_mb] = p_mb;
1425 InitMacroblock( p_vpar, p_mb, i_coding_type, i_chroma_format,
1426 i_structure, b_second_field );
1428 /* Motion type is picture structure. */
1429 p_mb->pf_motion = pf_motion_skipped[i_chroma_format]
1431 p_mb->i_mb_type = MB_MOTION_FORWARD;
1432 p_mb->i_coded_block_pattern = 0;
1433 memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
1435 /* Set the field we use for motion compensation */
1436 p_mb->ppi_field_select[0][0] = p_mb->ppi_field_select[0][1]
1437 = ( i_structure == BOTTOM_FIELD );
1439 UpdateContext( p_vpar, i_structure );
1442 /* Decode the macroblock NOW ! */
1443 vdec_DecodeMacroblock( p_vpar->pp_vdec[0], p_mb );
1447 /*****************************************************************************
1448 * MacroblockModes : Get the macroblock_modes structure
1449 *****************************************************************************/
1450 static __inline__ void MacroblockModes( vpar_thread_t * p_vpar,
1451 macroblock_t * p_mb,
1452 int i_chroma_format,
1456 static int ppi_mv_count[2][4] = { {0, 1, 2, 1}, {0, 2, 1, 1} };
1457 static int ppi_mv_format[2][4] = { {0, 1, 1, 1}, {0, 1, 2, 1} };
1459 /* Get macroblock_type. */
1460 switch( i_coding_type )
1463 p_mb->i_mb_type = PMBType( p_vpar );
1466 p_mb->i_mb_type = BMBType( p_vpar );
1469 p_mb->i_mb_type = IMBType( p_vpar );
1472 p_mb->i_mb_type = DMBType( p_vpar );
1475 /* SCALABILITY : warning, we don't know if spatial_temporal_weight_code
1476 * has to be dropped, take care if you use scalable streams. */
1477 /* RemoveBits( &p_vpar->bit_stream, 2 ); */
1479 if( (i_coding_type == P_CODING_TYPE || i_coding_type == B_CODING_TYPE)
1480 && (p_mb->i_mb_type & (MB_MOTION_FORWARD | MB_MOTION_BACKWARD)) )
1482 if( !(i_structure == FRAME_STRUCTURE
1483 && p_vpar->picture.b_frame_pred_frame_dct) )
1485 p_vpar->mb.i_motion_type = GetBits( &p_vpar->bit_stream, 2 );
1489 p_vpar->mb.i_motion_type = MOTION_FRAME;
1493 p_vpar->mb.i_mv_count = ppi_mv_count[i_structure == FRAME_STRUCTURE]
1494 [p_vpar->mb.i_motion_type];
1495 p_vpar->mb.i_mv_format = ppi_mv_format[i_structure == FRAME_STRUCTURE]
1496 [p_vpar->mb.i_motion_type];
1497 p_vpar->mb.b_dmv = p_vpar->mb.i_motion_type == MOTION_DMV;
1500 p_vpar->mb.b_dct_type = 0;
1501 if( (i_structure == FRAME_STRUCTURE) &&
1502 (!p_vpar->picture.b_frame_pred_frame_dct) &&
1503 (p_mb->i_mb_type & (MB_PATTERN|MB_INTRA)) )
1505 if( (p_vpar->mb.b_dct_type = GetBits( &p_vpar->bit_stream, 1 )) )
1507 /* The DCT is coded on fields. Jump one line between each
1509 p_mb->i_addb_l_stride <<= 1;
1510 p_mb->i_addb_l_stride += 8;
1511 /* With CHROMA_420, the DCT is necessarily frame-coded. */
1512 if( i_chroma_format != CHROMA_420 )
1514 p_mb->i_addb_c_stride <<= 1;
1515 p_mb->i_addb_c_stride += 8;
1521 /*****************************************************************************
1522 * ParseMacroblock : Parse the next macroblock
1523 *****************************************************************************/
1524 #define PARSEERROR \
1525 if( p_vpar->picture.b_error ) \
1527 /* Mark this block as skipped (better than green blocks), and \
1528 * go to the next slice. */ \
1529 (*pi_mb_address)--; \
1530 vpar_DestroyMacroblock( &p_vpar->vfifo, p_mb ); \
1535 #define PARSEBLOCKS( MPEG1FUNC, MPEG2FUNC ) \
1537 i_mask = 1 << (3 + (1 << i_chroma_format)); \
1540 p_data1 = p_mb->p_picture->p_y \
1541 + p_mb->i_l_x + p_vpar->mb.i_l_y*(p_vpar->sequence.i_width); \
1543 for( i_b = 0 ; i_b < 4 ; i_b++, i_mask >>= 1 ) \
1545 if( p_mb->i_coded_block_pattern & i_mask ) \
1547 memset( p_mb->ppi_blocks[i_b], 0, 64*sizeof(dctelem_t) ); \
1549 MPEG2FUNC( p_vpar, p_mb, i_b, i_chroma_format ); \
1551 MPEG1FUNC( p_vpar, p_mb, i_b, i_chroma_format ); \
1553 /* Calculate block coordinates. */ \
1554 p_mb->p_data[i_b] = p_data1 \
1555 + pi_y[p_vpar->mb.b_dct_type][i_b] \
1556 * p_vpar->sequence.i_width \
1564 p_data1 = p_mb->p_picture->p_u \
1566 + p_vpar->mb.i_c_y \
1567 * (p_vpar->sequence.i_chroma_width); \
1568 p_data2 = p_mb->p_picture->p_v \
1570 + p_vpar->mb.i_c_y \
1571 * (p_vpar->sequence.i_chroma_width); \
1573 for( i_b = 4; i_b < 4 + (1 << i_chroma_format); \
1574 i_b++, i_mask >>= 1 ) \
1576 yuv_data_t * pp_data[2] = {p_data1, p_data2}; \
1578 if( p_mb->i_coded_block_pattern & i_mask ) \
1580 memset( p_mb->ppi_blocks[i_b], 0, 64*sizeof(dctelem_t) ); \
1582 MPEG2FUNC( p_vpar, p_mb, i_b, i_chroma_format ); \
1584 MPEG1FUNC( p_vpar, p_mb, i_b, i_chroma_format ); \
1586 /* Calculate block coordinates. */ \
1587 p_mb->p_data[i_b] = pp_data[i_b & 1] \
1588 + pi_y[p_vpar->mb.b_dct_type][i_b] \
1589 * p_vpar->sequence.i_chroma_width \
1597 static __inline__ void ParseMacroblock(
1598 vpar_thread_t * p_vpar,
1599 int * pi_mb_address, /* previous address to be
1600 * used for mb_addr_incr */
1601 int i_mb_previous, /* actual previous mb */
1602 int i_mb_base, /* non-zero if field structure */
1603 /* The following parameters are explicit in
1604 * optimized routines : */
1605 boolean_t b_mpeg2, /* you know what ? */
1606 int i_coding_type, /* I, P, B or D */
1607 int i_chroma_format, /* 4:2:0, 4:2:2 or 4:4:4 */
1608 int i_structure, /* T(OP), B(OTTOM) or F(RAME) */
1609 boolean_t b_second_field ) /* second field of a
1612 static f_motion_t pppf_motion[4][2][4] =
1614 { {NULL, NULL, NULL, NULL},
1615 {NULL, NULL, NULL, NULL}
1617 { {NULL, vdec_MotionFieldField420, vdec_MotionField16x8420,
1618 vdec_MotionFieldDMV420},
1619 {NULL, vdec_MotionFrameField420, vdec_MotionFrameFrame420,
1620 vdec_MotionFrameDMV420}
1622 { {NULL, vdec_MotionFieldField422, vdec_MotionField16x8422,
1623 vdec_MotionFieldDMV422},
1624 {NULL, vdec_MotionFrameField422, vdec_MotionFrameFrame422,
1625 vdec_MotionFrameDMV422}
1627 { {NULL, vdec_MotionFieldField444, vdec_MotionField16x8444,
1628 vdec_MotionFieldDMV444},
1629 {NULL, vdec_MotionFrameField444, vdec_MotionFrameFrame444,
1630 vdec_MotionFrameDMV444}
1633 static int pi_x[12] = {0,8,0,8,0,0,0,0,8,8,8,8};
1634 static int pi_y[2][12] = { {0,0,8,8,0,0,8,8,0,0,8,8},
1635 {0,0,1,1,0,0,1,1,0,0,1,1} };
1636 int i_mb, i_b, i_mask;
1638 macroblock_t * p_mb;
1639 yuv_data_t * p_data1;
1640 yuv_data_t * p_data2;
1644 i_inc = MacroblockAddressIncrement( p_vpar );
1645 *pi_mb_address += i_inc;
1649 intf_ErrMsg( "vpar error: bad address increment (%d)\n", i_inc );
1650 p_vpar->picture.b_error = 1;
1654 if( *pi_mb_address - i_mb_previous - 1 )
1656 /* Skipped macroblock (ISO/IEC 13818-2 7.6.6). */
1658 /* Reset DC predictors (7.2.1). */
1659 p_vpar->mb.pi_dc_dct_pred[0] = p_vpar->mb.pi_dc_dct_pred[1]
1660 = p_vpar->mb.pi_dc_dct_pred[2]
1661 = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
1663 if( i_coding_type == P_CODING_TYPE )
1665 /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
1666 memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
1669 for( i_mb = i_mb_previous + 1; i_mb < *pi_mb_address; i_mb++ )
1671 SkippedMacroblock( p_vpar, i_mb, i_mb_base, i_coding_type,
1672 i_chroma_format, i_structure, b_second_field );
1676 /* Get a macroblock structure. */
1677 if( (p_mb = vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
1683 p_vpar->picture.pp_mb[i_mb_base + *pi_mb_address] = p_mb;
1686 InitMacroblock( p_vpar, p_mb, i_coding_type, i_chroma_format,
1687 i_structure, b_second_field );
1689 /* Parse off macroblock_modes structure. */
1690 MacroblockModes( p_vpar, p_mb, i_chroma_format, i_coding_type,
1693 if( p_mb->i_mb_type & MB_QUANT )
1695 LoadQuantizerScale( p_vpar );
1698 if( (i_coding_type == P_CODING_TYPE || i_coding_type == B_CODING_TYPE)
1699 && (p_mb->i_mb_type & MB_MOTION_FORWARD) )
1702 DecodeMVMPEG2( p_vpar, p_mb, 0, i_structure );
1704 DecodeMVMPEG1( p_vpar, p_mb, 0, i_structure );
1708 if( (i_coding_type == B_CODING_TYPE)
1709 && (p_mb->i_mb_type & MB_MOTION_BACKWARD) )
1712 DecodeMVMPEG2( p_vpar, p_mb, 1, i_structure );
1714 DecodeMVMPEG1( p_vpar, p_mb, 1, i_structure );
1718 if( i_coding_type == P_CODING_TYPE
1719 && !(p_mb->i_mb_type & (MB_MOTION_FORWARD|MB_INTRA)) )
1721 /* Special No-MC macroblock in P pictures (7.6.3.5). */
1722 p_mb->i_mb_type |= MB_MOTION_FORWARD;
1723 memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
1724 memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
1725 p_vpar->mb.i_motion_type = 1 + (i_structure == FRAME_STRUCTURE);
1726 p_mb->ppi_field_select[0][0] = (i_structure == BOTTOM_FIELD);
1729 if( (i_coding_type != I_CODING_TYPE) && !(p_mb->i_mb_type & MB_INTRA) )
1731 /* Reset DC predictors (7.2.1). */
1732 p_vpar->mb.pi_dc_dct_pred[0] = p_vpar->mb.pi_dc_dct_pred[1]
1733 = p_vpar->mb.pi_dc_dct_pred[2]
1734 = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
1736 /* Motion function pointer. */
1737 p_mb->pf_motion = pppf_motion[i_chroma_format]
1738 [i_structure == FRAME_STRUCTURE]
1739 [p_vpar->mb.i_motion_type];
1741 if( p_mb->i_mb_type & MB_PATTERN )
1743 switch( i_chroma_format )
1746 p_mb->i_coded_block_pattern = CodedPattern420( p_vpar );
1749 p_mb->i_coded_block_pattern = CodedPattern422( p_vpar );
1752 p_mb->i_coded_block_pattern = CodedPattern444( p_vpar );
1757 p_mb->i_coded_block_pattern = 0;
1761 * Effectively decode blocks.
1763 PARSEBLOCKS( DecodeMPEG1NonIntra, DecodeMPEG2NonIntra )
1767 if( !p_vpar->picture.b_concealment_mv )
1769 /* Reset MV predictors. */
1770 memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
1775 DecodeMVMPEG2( p_vpar, p_mb, 0, i_structure );
1777 DecodeMVMPEG1( p_vpar, p_mb, 0, i_structure );
1778 RemoveBits( &p_vpar->bit_stream, 1 );
1781 if( p_mb->i_mb_type & MB_PATTERN )
1783 switch( i_chroma_format )
1786 p_mb->i_coded_block_pattern = CodedPattern420( p_vpar );
1789 p_mb->i_coded_block_pattern = CodedPattern422( p_vpar );
1792 p_mb->i_coded_block_pattern = CodedPattern444( p_vpar );
1797 p_mb->i_coded_block_pattern =
1798 (1 << (4 + (1 << i_chroma_format))) - 1;
1802 * Effectively decode blocks.
1804 PARSEBLOCKS( DecodeMPEG1Intra, DecodeMPEG2Intra )
1807 if( !p_vpar->picture.b_error )
1809 UpdateContext( p_vpar, i_structure );
1811 /* Decode the macroblock NOW ! */
1812 vdec_DecodeMacroblock( p_vpar->pp_vdec[0], p_mb );
1817 /* Mark this block as skipped (better than green blocks), and go
1818 * to the next slice. */
1820 vpar_DestroyMacroblock( &p_vpar->vfifo, p_mb );
1825 * Picture data parsing management
1828 /*****************************************************************************
1829 * SliceHeader : Parse the next slice structure
1830 *****************************************************************************/
1831 static __inline__ void SliceHeader( vpar_thread_t * p_vpar,
1832 int * pi_mb_address, int i_mb_base,
1833 u32 i_vert_code, boolean_t b_high,
1834 boolean_t b_dp_scalable,
1835 boolean_t b_mpeg2, int i_coding_type,
1836 int i_chroma_format, int i_structure,
1837 boolean_t b_second_field )
1839 int i_mb_address_save = *pi_mb_address;
1841 p_vpar->picture.b_error = 0;
1845 /* Picture with more than 2800 lines. */
1846 i_vert_code += GetBits( &p_vpar->bit_stream, 3 ) << 7;
1850 /* DATA_PARTITIONING scalability. */
1851 RemoveBits( &p_vpar->bit_stream, 7 ); /* priority_breakpoint */
1854 LoadQuantizerScale( p_vpar );
1856 if( GetBits( &p_vpar->bit_stream, 1 ) )
1858 /* intra_slice, slice_id */
1859 RemoveBits( &p_vpar->bit_stream, 8 );
1860 /* extra_information_slice */
1861 while( GetBits( &p_vpar->bit_stream, 1 ) )
1863 RemoveBits( &p_vpar->bit_stream, 8 );
1866 *pi_mb_address = (i_vert_code - 1)*p_vpar->sequence.i_mb_width;
1868 if( *pi_mb_address < i_mb_address_save )
1870 intf_ErrMsg( "vpar error: slices do not follow, maybe a PES has been trashed\n" );
1871 p_vpar->picture.b_error = 1;
1875 /* Reset DC coefficients predictors (ISO/IEC 13818-2 7.2.1). */
1876 p_vpar->mb.pi_dc_dct_pred[0] = p_vpar->mb.pi_dc_dct_pred[1]
1877 = p_vpar->mb.pi_dc_dct_pred[2]
1878 = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
1880 /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
1881 memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
1885 if( i_mb_address_save >= p_vpar->sequence.i_mb_size )
1887 p_vpar->picture.b_error = 1;
1890 ParseMacroblock( p_vpar, pi_mb_address, i_mb_address_save,
1891 i_mb_base, b_mpeg2, i_coding_type,
1892 i_chroma_format, i_structure,
1894 i_mb_address_save = *pi_mb_address;
1895 if( p_vpar->picture.b_error )
1900 while( ShowBits( &p_vpar->bit_stream, 23 ) && !p_vpar->b_die );
1901 NextStartCode( p_vpar );
1904 /*****************************************************************************
1905 * PictureData : Parse off all macroblocks (ISO/IEC 13818-2 6.2.3.7)
1906 *****************************************************************************/
1907 static __inline__ void PictureData( vpar_thread_t * p_vpar, int i_mb_base,
1908 boolean_t b_high, boolean_t b_dp_scalable,
1909 boolean_t b_mpeg2, int i_coding_type,
1910 int i_chroma_format, int i_structure,
1911 boolean_t b_second_field )
1913 int i_mb_address = 0;
1916 NextStartCode( p_vpar );
1917 while( ((i_coding_type != I_CODING_TYPE && i_coding_type != D_CODING_TYPE)
1918 || !p_vpar->picture.b_error)
1919 && i_mb_address+i_mb_base < p_vpar->sequence.i_mb_size
1922 if( ((i_dummy = ShowBits( &p_vpar->bit_stream, 32 ))
1923 < SLICE_START_CODE_MIN) ||
1924 (i_dummy > SLICE_START_CODE_MAX) )
1926 intf_DbgMsg("vpar debug: premature end of picture\n");
1927 p_vpar->picture.b_error = 1;
1930 RemoveBits32( &p_vpar->bit_stream );
1932 /* Decode slice data. */
1933 SliceHeader( p_vpar, &i_mb_address, i_mb_base, i_dummy & 255,
1934 b_high, b_dp_scalable, b_mpeg2, i_coding_type,
1935 i_chroma_format, i_structure, b_second_field );
1938 /* Try to recover from error. If we missed less than half the
1939 * number of macroblocks of the picture, mark the missed ones
1941 if( (i_coding_type == P_CODING_TYPE || i_coding_type == B_CODING_TYPE)
1942 && p_vpar->picture.b_error &&
1943 ( (i_mb_address-i_mb_base) > (p_vpar->sequence.i_mb_size >> 1)
1944 || (i_structure != FRAME_STRUCTURE
1945 && (i_mb_address-i_mb_base) > (p_vpar->sequence.i_mb_size >> 2) ) ) )
1949 p_vpar->picture.b_error = 0;
1950 for( i_mb = i_mb_address + 1;
1951 i_mb < (p_vpar->sequence.i_mb_size
1952 << (i_structure != FRAME_STRUCTURE));
1955 SkippedMacroblock( p_vpar, i_mb, i_mb_base, i_coding_type,
1956 i_chroma_format, i_structure, b_second_field );
1961 /*****************************************************************************
1962 * vpar_PictureDataVWXYZ : Parse the next macroblock ; specific functions
1963 *****************************************************************************
1966 * X = chroma format ?
1968 * Z = second field ?
1969 *****************************************************************************/
1970 void vpar_PictureDataGENERIC( vpar_thread_t * p_vpar, int i_mb_base )
1972 PictureData( p_vpar, i_mb_base, (p_vpar->sequence.i_height > 2800),
1973 (p_vpar->sequence.i_scalable_mode == SC_DP),
1974 p_vpar->sequence.b_mpeg2, p_vpar->picture.i_coding_type,
1975 p_vpar->sequence.i_chroma_format,
1976 p_vpar->picture.i_structure,
1977 (p_vpar->picture.i_structure !=
1978 p_vpar->picture.i_current_structure) );
1981 #if (VPAR_OPTIM_LEVEL > 0)
1982 /* Optimizations for frame pictures */
1983 void vpar_PictureData2I420F0( vpar_thread_t * p_vpar, int i_mb_base )
1985 PictureData( p_vpar, 0, 0, 0, 1, I_CODING_TYPE, CHROMA_420,
1986 FRAME_STRUCTURE, 0 );
1989 void vpar_PictureData2P420F0( vpar_thread_t * p_vpar, int i_mb_base )
1991 PictureData( p_vpar, 0, 0, 0, 1, P_CODING_TYPE, CHROMA_420,
1992 FRAME_STRUCTURE, 0 );
1995 void vpar_PictureData2B420F0( vpar_thread_t * p_vpar, int i_mb_base )
1997 PictureData( p_vpar, 0, 0, 0, 1, B_CODING_TYPE, CHROMA_420,
1998 FRAME_STRUCTURE, 0 );
2002 #if (VPAR_OPTIM_LEVEL > 1)
2003 /* Optimizations for field pictures */
2004 void vpar_PictureData2I420TZ( vpar_thread_t * p_vpar, int i_mb_base )
2006 PictureData( p_vpar, i_mb_base, 0, 0, 1, I_CODING_TYPE, CHROMA_420,
2007 TOP_FIELD, (p_vpar->picture.i_structure !=
2008 p_vpar->picture.i_current_structure) );
2011 void vpar_PictureData2P420TZ( vpar_thread_t * p_vpar, int i_mb_base )
2013 PictureData( p_vpar, i_mb_base, 0, 0, 1, P_CODING_TYPE, CHROMA_420,
2014 TOP_FIELD, (p_vpar->picture.i_structure !=
2015 p_vpar->picture.i_current_structure) );
2018 void vpar_PictureData2B420TZ( vpar_thread_t * p_vpar, int i_mb_base )
2020 PictureData( p_vpar, i_mb_base, 0, 0, 1, B_CODING_TYPE, CHROMA_420,
2021 TOP_FIELD, (p_vpar->picture.i_structure !=
2022 p_vpar->picture.i_current_structure) );
2025 void vpar_PictureData2I420BZ( vpar_thread_t * p_vpar, int i_mb_base )
2027 PictureData( p_vpar, i_mb_base, 0, 0, 1, I_CODING_TYPE, CHROMA_420,
2028 BOTTOM_FIELD, (p_vpar->picture.i_structure !=
2029 p_vpar->picture.i_current_structure) );
2032 void vpar_PictureData2P420BZ( vpar_thread_t * p_vpar, int i_mb_base )
2034 PictureData( p_vpar, i_mb_base, 0, 0, 1, P_CODING_TYPE, CHROMA_420,
2035 BOTTOM_FIELD, (p_vpar->picture.i_structure !=
2036 p_vpar->picture.i_current_structure) );
2039 void vpar_PictureData2B420BZ( vpar_thread_t * p_vpar, int i_mb_base )
2041 PictureData( p_vpar, i_mb_base, 0, 0, 1, B_CODING_TYPE, CHROMA_420,
2042 BOTTOM_FIELD, (p_vpar->picture.i_structure !=
2043 p_vpar->picture.i_current_structure) );