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" */
36 #include "debug.h" /* XXX?? temporaire, requis par netlist.h */
39 #include "input_netlist.h"
40 #include "decoder_fifo.h"
42 #include "video_output.h"
44 #include "vdec_idct.h"
45 #include "video_decoder.h"
46 #include "vdec_motion.h"
48 #include "vpar_blocks.h"
49 #include "vpar_headers.h"
50 #include "vpar_synchro.h"
51 #include "video_parser.h"
52 #include "video_fifo.h"
54 static int i_count = 0;
57 * Welcome to vpar_blocks.c ! Here's where the heavy processor-critical parsing
58 * task is done. This file is divided in several parts :
59 * - Initialization of the lookup tables
60 * - Decoding of coded blocks
61 * - Decoding of motion vectors
62 * - Decoding of the other macroblock structures
63 * - Picture data parsing management (slices and error handling)
64 * It's a pretty long file. Good luck and have a nice day.
69 * Initialization tables
72 /* Table for coded_block_pattern resolution */
73 static lookup_t pl_coded_pattern[512] =
74 { {MB_ERROR, 0}, {0, 9}, {39, 9}, {27, 9}, {59, 9}, {55, 9}, {47, 9}, {31, 9},
75 {58, 8}, {58, 8}, {54, 8}, {54, 8}, {46, 8}, {46, 8}, {30, 8}, {30, 8},
76 {57, 8}, {57, 8}, {53, 8}, {53, 8}, {45, 8}, {45, 8}, {29, 8}, {29, 8},
77 {38, 8}, {38, 8}, {26, 8}, {26, 8}, {37, 8}, {37, 8}, {25, 8}, {25, 8},
78 {43, 8}, {43, 8}, {23, 8}, {23, 8}, {51, 8}, {51, 8}, {15, 8}, {15, 8},
79 {42, 8}, {42, 8}, {22, 8}, {22, 8}, {50, 8}, {50, 8}, {14, 8}, {14, 8},
80 {41, 8}, {41, 8}, {21, 8}, {21, 8}, {49, 8}, {49, 8}, {13, 8}, {13, 8},
81 {35, 8}, {35, 8}, {19, 8}, {19, 8}, {11, 8}, {11, 8}, {7, 8}, {7, 8},
82 {34, 7}, {34, 7}, {34, 7}, {34, 7}, {18, 7}, {18, 7}, {18, 7}, {18, 7},
83 {10, 7}, {10, 7}, {10, 7}, {10, 7}, {6, 7}, {6, 7}, {6, 7}, {6, 7},
84 {33, 7}, {33, 7}, {33, 7}, {33, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7},
85 {9, 7}, {9, 7}, {9, 7}, {9, 7}, {5, 7}, {5, 7}, {5, 7}, {5, 7},
86 {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6},
87 {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6},
88 {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6},
89 {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6},
90 {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5},
91 {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5},
92 {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5},
93 {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5},
94 {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5},
95 {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5},
96 {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5},
97 {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5},
98 {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5},
99 {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5},
100 {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5},
101 {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5},
102 {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5},
103 {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5},
104 {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5},
105 {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5},
106 {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5},
107 {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5},
108 {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5},
109 {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5},
110 {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5},
111 {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5},
112 {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5},
113 {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5},
114 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
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 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 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 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 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 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 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 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
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} };
139 /* Tables for dc DCT coefficients
140 * Tables are cut in two parts to reduce memory occupation
143 /* Table B-12, dct_dc_size_luminance, codes 00XXX ... 11110 */
144 static lookup_t pl_dct_dc_lum_init_table_1[32] =
145 { {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
146 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
147 {0, 3}, {0, 3}, {0, 3}, {0, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3},
148 {4, 3}, {4, 3}, {4, 3}, {4, 3}, {5, 4}, {5, 4}, {6, 5}, {MB_ERROR, 0}
151 /* Table B-12, dct_dc_size_luminance, codes 111110xxx ... 111111111 */
152 static lookup_t pl_dct_dc_lum_init_table_2[32] =
153 { {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6},
154 {8, 7}, {8, 7}, {8, 7}, {8, 7}, {9, 8}, {9, 8}, {10,9}, {11,9},
155 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0},
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}
161 /* Table B-13, dct_dc_size_chrominance, codes 00xxx ... 11110 */
162 static lookup_t pl_dct_dc_chrom_init_table_1[32] =
163 { {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2},
164 {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
165 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
166 {3, 3}, {3, 3}, {3, 3}, {3, 3}, {4, 4}, {4, 4}, {5, 5}, {MB_ERROR, 0}
169 /* Table B-13, dct_dc_size_chrominance, codes 111110xxxx ... 1111111111 */
170 static lookup_t pl_dct_dc_chrom_init_table_2[32] =
171 { {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
172 {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
173 {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7},
174 {8, 8}, {8, 8}, {8, 8}, {8, 8}, {9, 9}, {9, 9}, {10,10}, {11,10}
178 /* Tables for ac DCT coefficients. There are cut in many parts to save space */
179 /* Table B-14, DCT coefficients table zero,
180 * codes 0100 ... 1xxx (used for first (DC) coefficient)
182 static dct_lookup_t pl_DCT_tab_dc[12] =
184 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
185 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1},
186 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1}
189 /* Table B-14, DCT coefficients table zero,
190 * codes 0100 ... 1xxx (used for all other coefficients)
192 static dct_lookup_t pl_DCT_tab_ac[12] =
194 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
195 {DCT_EOB,0,2}, {DCT_EOB,0,2}, {DCT_EOB,0,2}, {DCT_EOB,0,2}, /* EOB */
196 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2}
199 /* Table B-14, DCT coefficients table zero,
200 * codes 000001xx ... 00111xxx
202 static dct_lookup_t pl_DCT_tab0[60] =
204 {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6},
206 {2,2,7}, {2,2,7}, {9,1,7}, {9,1,7},
207 {0,4,7}, {0,4,7}, {8,1,7}, {8,1,7},
208 {7,1,6}, {7,1,6}, {7,1,6}, {7,1,6},
209 {6,1,6}, {6,1,6}, {6,1,6}, {6,1,6},
210 {1,2,6}, {1,2,6}, {1,2,6}, {1,2,6},
211 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
212 {13,1,8}, {0,6,8}, {12,1,8}, {11,1,8},
213 {3,2,8}, {1,3,8}, {0,5,8}, {10,1,8},
214 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
215 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
216 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
217 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
218 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
219 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5}
222 /* Table B-15, DCT coefficients table one,
223 * codes 000001xx ... 11111111
225 static dct_lookup_t pl_DCT_tab0a[252] =
227 {65,0,6}, {65,0,6}, {65,0,6}, {65,0,6}, /* Escape */
228 {7,1,7}, {7,1,7}, {8,1,7}, {8,1,7},
229 {6,1,7}, {6,1,7}, {2,2,7}, {2,2,7},
230 {0,7,6}, {0,7,6}, {0,7,6}, {0,7,6},
231 {0,6,6}, {0,6,6}, {0,6,6}, {0,6,6},
232 {4,1,6}, {4,1,6}, {4,1,6}, {4,1,6},
233 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
234 {1,5,8}, {11,1,8}, {0,11,8}, {0,10,8},
235 {13,1,8}, {12,1,8}, {3,2,8}, {1,4,8},
236 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
237 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
238 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
239 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
240 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
241 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
242 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
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 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4}, /* EOB */
251 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
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 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
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 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
259 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
260 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
261 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
262 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
263 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
264 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
265 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
266 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
267 {0,1,2}, {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 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
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 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
283 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
284 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
285 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
286 {9,1,7}, {9,1,7}, {1,3,7}, {1,3,7},
287 {10,1,7}, {10,1,7}, {0,8,7}, {0,8,7},
288 {0,9,7}, {0,9,7}, {0,12,8}, {0,13,8},
289 {2,3,8}, {4,2,8}, {0,14,8}, {0,15,8}
292 /* Table B-14, DCT coefficients table zero,
293 * codes 0000001000 ... 0000001111
295 static dct_lookup_t pl_DCT_tab1[8] =
297 {16,1,10}, {5,2,10}, {0,7,10}, {2,3,10},
298 {1,4,10}, {15,1,10}, {14,1,10}, {4,2,10}
301 /* Table B-15, DCT coefficients table one,
302 * codes 000000100x ... 000000111x
304 static dct_lookup_t pl_DCT_tab1a[8] =
306 {5,2,9}, {5,2,9}, {14,1,9}, {14,1,9},
307 {2,4,10}, {16,1,10}, {15,1,9}, {15,1,9}
310 /* Table B-14/15, DCT coefficients table zero / one,
311 * codes 000000010000 ... 000000011111
313 static dct_lookup_t pl_DCT_tab2[16] =
315 {0,11,12}, {8,2,12}, {4,3,12}, {0,10,12},
316 {2,4,12}, {7,2,12}, {21,1,12}, {20,1,12},
317 {0,9,12}, {19,1,12}, {18,1,12}, {1,5,12},
318 {3,3,12}, {0,8,12}, {6,2,12}, {17,1,12}
321 /* Table B-14/15, DCT coefficients table zero / one,
322 * codes 0000000010000 ... 0000000011111
324 static dct_lookup_t pl_DCT_tab3[16] =
326 {10,2,13}, {9,2,13}, {5,3,13}, {3,4,13},
327 {2,5,13}, {1,7,13}, {1,6,13}, {0,15,13},
328 {0,14,13}, {0,13,13}, {0,12,13}, {26,1,13},
329 {25,1,13}, {24,1,13}, {23,1,13}, {22,1,13}
332 /* Table B-14/15, DCT coefficients table zero / one,
333 * codes 00000000010000 ... 00000000011111
335 static dct_lookup_t pl_DCT_tab4[16] =
337 {0,31,14}, {0,30,14}, {0,29,14}, {0,28,14},
338 {0,27,14}, {0,26,14}, {0,25,14}, {0,24,14},
339 {0,23,14}, {0,22,14}, {0,21,14}, {0,20,14},
340 {0,19,14}, {0,18,14}, {0,17,14}, {0,16,14}
343 /* Table B-14/15, DCT coefficients table zero / one,
344 * codes 000000000010000 ... 000000000011111
346 static dct_lookup_t pl_DCT_tab5[16] =
348 {0,40,15}, {0,39,15}, {0,38,15}, {0,37,15},
349 {0,36,15}, {0,35,15}, {0,34,15}, {0,33,15},
350 {0,32,15}, {1,14,15}, {1,13,15}, {1,12,15},
351 {1,11,15}, {1,10,15}, {1,9,15}, {1,8,15}
354 /* Table B-14/15, DCT coefficients table zero / one,
355 * codes 0000000000010000 ... 0000000000011111
357 static dct_lookup_t pl_DCT_tab6[16] =
359 {1,18,16}, {1,17,16}, {1,16,16}, {1,15,16},
360 {6,3,16}, {16,2,16}, {15,2,16}, {14,2,16},
361 {13,2,16}, {12,2,16}, {11,2,16}, {31,1,16},
362 {30,1,16}, {29,1,16}, {28,1,16}, {27,1,16}
367 * Initialization of lookup tables
370 /*****************************************************************************
371 * vpar_InitCrop : Initialize the crop table for saturation
372 * (ISO/IEC 13818-2 section 7.4.3)
373 *****************************************************************************/
374 #if defined(MPEG2_COMPLIANT) && !defined(VDEC_DFT)
375 void vpar_InitCrop( vpar_thread_t * p_vpar )
379 p_vpar->pi_crop = p_vpar->pi_crop_buf + 4096;
381 for( i_dummy = -4096; i_dummy < -2048; i_dummy++ )
383 p_vpar->pi_crop[i_dummy] = -2048;
385 for( ; i_dummy < 2047; i_dummy++ )
387 p_vpar->pi_crop[i_dummy] = i_dummy;
389 for( ; i_dummy < 4095; i_dummy++ )
391 p_vpar->pi_crop[i_dummy] = 2047;
396 /*****************************************************************************
397 * vpar_InitMbAddrInc : Initialize the lookup table for mb_addr_inc
398 *****************************************************************************/
400 /* Function for filling up the lookup table for mb_addr_inc */
401 static void __inline__ FillMbAddrIncTable( vpar_thread_t * p_vpar,
402 int i_start, int i_end, int i_step,
403 int * pi_value, int i_length )
406 for( i_pos = i_start ; i_pos < i_end ; i_pos += i_step )
408 for( i_offset = 0 ; i_offset < i_step ; i_offset ++ )
410 p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_value = * pi_value;
411 p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_length = i_length;
417 /* Function that initialize the table using the last one */
418 void vpar_InitMbAddrInc( vpar_thread_t * p_vpar )
423 for( i_dummy = 0 ; i_dummy < 8 ; i_dummy++ )
425 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
426 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
429 p_vpar->pl_mb_addr_inc[8].i_value = MB_ADDRINC_ESCAPE;
430 p_vpar->pl_mb_addr_inc[8].i_length = 11;
432 for( i_dummy = 9 ; i_dummy < 15 ; i_dummy ++ )
434 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
435 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
438 p_vpar->pl_mb_addr_inc[15].i_value = MB_ADDRINC_STUFFING;
439 p_vpar->pl_mb_addr_inc[15].i_length = 11;
441 for( i_dummy = 16; i_dummy < 24; i_dummy++ )
443 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
444 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
449 FillMbAddrIncTable( p_vpar, 24, 36, 1, &i_value, 11 );
450 FillMbAddrIncTable( p_vpar, 36, 48, 2, &i_value, 10 );
451 FillMbAddrIncTable( p_vpar, 48, 96, 8, &i_value, 8 );
452 FillMbAddrIncTable( p_vpar, 96, 128, 16, &i_value, 7 );
453 FillMbAddrIncTable( p_vpar, 128, 256, 64, &i_value, 5 );
454 FillMbAddrIncTable( p_vpar, 256, 512, 128, &i_value, 4 );
455 FillMbAddrIncTable( p_vpar, 512, 1024, 256, &i_value, 3 );
456 FillMbAddrIncTable( p_vpar, 1024, 2048, 1024, &i_value, 1 );
459 /*****************************************************************************
460 * vpar_Init*MBType : Initialize lookup table for the Macroblock type
461 *****************************************************************************/
463 /* Fonction for filling up the tables */
464 static void __inline__ FillMBType( vpar_thread_t * p_vpar,
473 for( i_dummy = i_start ; i_dummy < i_end ; i_dummy++ )
475 p_vpar->ppl_mb_type[i_mb_type][i_dummy].i_value = i_value;
476 p_vpar->ppl_mb_type[i_mb_type][i_dummy].i_length = i_length;
480 /* Fonction that fills the table for P MB_Type */
481 void vpar_InitPMBType( vpar_thread_t * p_vpar )
483 FillMBType( p_vpar, 0, 32, 64, MB_MOTION_FORWARD|MB_PATTERN, 1 );
484 FillMBType( p_vpar, 0, 16, 32, MB_PATTERN, 2 );
485 FillMBType( p_vpar, 0, 8, 16, MB_MOTION_FORWARD, 3 );
486 FillMBType( p_vpar, 0, 6, 8, MB_INTRA, 5 );
487 FillMBType( p_vpar, 0, 4, 6, MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN, 5 );
488 FillMBType( p_vpar, 0, 2, 4, MB_QUANT|MB_PATTERN, 5 );
489 p_vpar->ppl_mb_type[0][1].i_value = MB_QUANT|MB_INTRA;
490 p_vpar->ppl_mb_type[0][1].i_length = 6;
491 p_vpar->ppl_mb_type[0][0].i_value = MB_ERROR;
492 p_vpar->ppl_mb_type[0][0].i_length = 0;
495 /* Fonction that fills the table for B MB_Type */
496 void vpar_InitBMBType( vpar_thread_t * p_vpar )
498 FillMBType( p_vpar, 1, 48, 64, MB_MOTION_FORWARD
499 |MB_MOTION_BACKWARD|MB_PATTERN, 2 );
500 FillMBType( p_vpar, 1, 32, 48, MB_MOTION_FORWARD|MB_MOTION_BACKWARD, 2 );
501 FillMBType( p_vpar, 1, 24, 32, MB_MOTION_BACKWARD|MB_PATTERN, 3 );
502 FillMBType( p_vpar, 1, 16, 24, MB_MOTION_BACKWARD, 3 );
503 FillMBType( p_vpar, 1, 12, 16, MB_MOTION_FORWARD|MB_PATTERN, 4 );
504 FillMBType( p_vpar, 1, 8, 12, MB_MOTION_FORWARD, 4 );
505 FillMBType( p_vpar, 1, 6, 8, MB_INTRA, 5 );
506 FillMBType( p_vpar, 1, 4, 6, MB_QUANT|MB_MOTION_FORWARD
507 |MB_MOTION_BACKWARD|MB_PATTERN, 5 );
508 p_vpar->ppl_mb_type[1][3].i_value = MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN;
509 p_vpar->ppl_mb_type[1][3].i_length = 6;
510 p_vpar->ppl_mb_type[1][2].i_value = MB_QUANT|MB_MOTION_BACKWARD|MB_PATTERN;
511 p_vpar->ppl_mb_type[1][2].i_length = 6;
512 p_vpar->ppl_mb_type[1][1].i_value = MB_QUANT|MB_INTRA;
513 p_vpar->ppl_mb_type[1][1].i_length = 6;
514 p_vpar->ppl_mb_type[1][0].i_value =MB_ERROR;
515 p_vpar->ppl_mb_type[1][0].i_length = 0;
519 /*****************************************************************************
520 * vpar_InitDCTTables : Initialize tables giving the length of the dct
521 * coefficient from the vlc code
522 *****************************************************************************/
524 /* First fonction for filling the table */
525 static void __inline__ FillDCTTable( dct_lookup_t * p_tab_dest, dct_lookup_t * p_tab_src,
526 int i_step, int i_nb_elem, int i_offset )
528 int i_dummy, i_dummy2;
530 for( i_dummy=0 ; i_dummy < i_nb_elem ; i_dummy++ )
532 for( i_dummy2=0 ; i_dummy2 < i_step ; i_dummy2++ )
534 p_tab_dest[(i_dummy+i_offset)*i_step+i_dummy2] = p_tab_src[i_dummy];
540 /* Fonction that actually fills the table or create the pointers */
541 void vpar_InitDCTTables( vpar_thread_t * p_vpar )
543 /* Tables are cut in two parts to reduce memory occupation */
544 p_vpar->pppl_dct_dc_size[0][0] = pl_dct_dc_lum_init_table_1;
545 p_vpar->pppl_dct_dc_size[0][1] = pl_dct_dc_lum_init_table_2;
546 p_vpar->pppl_dct_dc_size[1][0] = pl_dct_dc_chrom_init_table_1;
547 p_vpar->pppl_dct_dc_size[1][1] = pl_dct_dc_chrom_init_table_2;
549 /* XXX?? MB_ERROR is replaced by 0 because if we use -1 we
550 * can block in DecodeMPEG2Intra and others */
551 memset( p_vpar->ppl_dct_coef[0], 0, 16 );
552 memset( p_vpar->ppl_dct_coef[1], 0, 16 );
554 /* For table B14 & B15, we have a pointer to tables */
555 /* We fill the table thanks to the fonction defined above */
556 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab0, 256, 60, 4 );
557 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab1, 64, 8, 8 );
558 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab2, 16, 16, 16 );
559 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab3, 8, 16, 16 );
560 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab4, 4, 16, 16 );
561 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab5, 2, 16, 16 );
562 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab6, 1, 16, 16 );
564 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab0a, 256, 60, 4 );
565 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab1a, 64, 8, 8 );
566 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab2, 16, 16, 16 );
567 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab3, 8, 16, 16 );
568 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab4, 4, 16, 16 );
569 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab5, 2, 16, 16 );
570 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab6, 1, 16, 16 );
578 /*****************************************************************************
579 * DecodeMPEG1NonIntra : decode MPEG-1 non-intra blocks
580 *****************************************************************************/
581 static __inline__ void DecodeMPEG1NonIntra( vpar_thread_t * p_vpar,
582 macroblock_t * p_mb, int i_b,
583 int i_chroma_format )
586 if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
588 /* Remove end_of_macroblock (always 1, prevents startcode emulation)
589 * ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
590 RemoveBits( &p_vpar->bit_stream, 1 );
594 /*****************************************************************************
595 * DecodeMPEG1Intra : decode MPEG-1 intra blocks
596 *****************************************************************************/
597 static __inline__ void DecodeMPEG1Intra( vpar_thread_t * p_vpar,
598 macroblock_t * p_mb, int i_b ,
599 int i_chroma_format )
602 if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
604 /* Remove end_of_macroblock (always 1, prevents startcode emulation)
605 * ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
606 RemoveBits( &p_vpar->bit_stream, 1 );
610 /*****************************************************************************
611 * DecodeMPEG2NonIntra : decode MPEG-2 non-intra blocks
612 *****************************************************************************/
613 static __inline__ void DecodeMPEG2NonIntra( vpar_thread_t * p_vpar,
614 macroblock_t * p_mb, int i_b,
615 int i_chroma_format )
630 /* Lookup Table for the chromatic component */
631 static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
633 i_cc = pi_cc_index[i_b];
635 /* Determine whether it is luminance or not (chrominance) */
636 i_type = ( i_cc + 1 ) >> 1;
638 /* Give a pointer to the quantization matrices for intra blocks */
639 if( (i_chroma_format == CHROMA_420) || (!i_type) )
641 pi_quant = p_vpar->sequence.nonintra_quant.pi_matrix;
645 pi_quant = p_vpar->sequence.chroma_nonintra_quant.pi_matrix;
648 /* Decoding of the AC coefficients */
652 for( i_parse = 0; !p_vpar->b_die; i_parse++ )
654 i_code = ShowBits( &p_vpar->bit_stream, 16 );
655 if( i_code >= 16384 )
659 i_run = pl_DCT_tab_dc[(i_code>>12)-4].i_run;
660 i_level = pl_DCT_tab_dc[(i_code>>12)-4].i_level;
661 i_length = pl_DCT_tab_dc[(i_code>>12)-4].i_length;
665 i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
666 i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
667 i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
670 else if( i_code >= 1024 )
672 i_run = pl_DCT_tab0[(i_code>>8)-4].i_run;
673 i_length = pl_DCT_tab0[(i_code>>8)-4].i_length;
674 i_level = pl_DCT_tab0[(i_code>>8)-4].i_level;
678 i_run = p_vpar->ppl_dct_coef[0][i_code].i_run;
679 i_length = p_vpar->ppl_dct_coef[0][i_code].i_length;
680 i_level = p_vpar->ppl_dct_coef[0][i_code].i_level;
684 RemoveBits( &p_vpar->bit_stream, i_length );
689 i_run = GetBits( &p_vpar->bit_stream, 6 );
690 i_level = GetBits( &p_vpar->bit_stream, 12 );
691 i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
696 /* The MMX IDCT has a precision problem with non-intra
698 p_mb->ppi_blocks[i_b][0] += 4;
702 p_mb->pf_idct[i_b] = vdec_SparseIDCT;
703 p_mb->pi_sparse_pos[i_b] = i_coef;
707 p_mb->pf_idct[i_b] = vdec_IDCT;
713 b_sign = GetBits( &p_vpar->bit_stream, 1 );
724 i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
725 i_level = ( ((i_level << 1) + 1) * p_vpar->mb.i_quantizer_scale
726 * pi_quant[i_pos] ) >> 5;
727 p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level;
730 intf_ErrMsg("vpar error: DCT coeff (non-intra) is out of bounds\n");
731 p_vpar->picture.b_error = 1;
734 /*****************************************************************************
735 * DecodeMPEG2Intra : decode MPEG-2 intra blocks
736 *****************************************************************************/
737 static __inline__ void DecodeMPEG2Intra( vpar_thread_t * p_vpar,
738 macroblock_t * p_mb, int i_b,
739 int i_chroma_format )
753 boolean_t b_vlc_intra;
757 /* Lookup Table for the chromatic component */
758 static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
759 i_cc = pi_cc_index[i_b];
761 /* Determine whether it is luminance or not (chrominance) */
762 i_type = ( i_cc + 1 ) >> 1;
764 /* Give a pointer to the quantization matrices for intra blocks */
765 if( (i_chroma_format == CHROMA_420) || (!i_type) )
767 pi_quant = p_vpar->sequence.intra_quant.pi_matrix;
771 pi_quant = p_vpar->sequence.chroma_intra_quant.pi_matrix;
775 /* Decoding of the DC intra coefficient */
776 /* The nb of bits to parse depends on i_type */
777 i_code = ShowBits( &p_vpar->bit_stream, 9 + i_type );
779 /* To reduce memory occupation, there are two lookup tables
780 * See InitDCT above */
781 i_code5 = i_code >> (4+i_type);
783 /* Shall we lookup in the first or in the second table ? */
784 i_select = ( i_code5 == 31 );
785 /* Offset value for looking in the second table */
786 i_offset = 0x1f0 + ( i_type * 0x1f0 );
787 i_pos = ( i_code5 * ( ! i_select ) ) + ( ( i_code - i_offset ) * i_select );
788 i_dct_dc_size = p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_value;
791 if( !i_type/*i_b < 4*/ )
794 i_code = ShowBits(&p_vpar->bit_stream, 5);
797 i_dct_dc_size = pl_dct_dc_lum_init_table_1[i_code].i_value;
798 i_length = pl_dct_dc_lum_init_table_1[i_code].i_length;
799 RemoveBits( &p_vpar->bit_stream, i_length);
803 i_code = ShowBits(&p_vpar->bit_stream, 9) - 0x1f0;
804 i_dct_dc_size = pl_dct_dc_lum_init_table_2[i_code].i_value;
805 i_length = pl_dct_dc_lum_init_table_2[i_code].i_length;
806 RemoveBits( &p_vpar->bit_stream, i_length);
812 i_code = ShowBits(&p_vpar->bit_stream, 5);
816 i_dct_dc_size = pl_dct_dc_chrom_init_table_1[i_code].i_value;
817 i_length = pl_dct_dc_chrom_init_table_1[i_code].i_length;
818 RemoveBits(&p_vpar->bit_stream, i_length);
822 i_code = ShowBits(&p_vpar->bit_stream, 10) - 0x3e0;
823 i_dct_dc_size = pl_dct_dc_chrom_init_table_2[i_code].i_value;
824 i_length = pl_dct_dc_chrom_init_table_2[i_code].i_length;
825 RemoveBits( &p_vpar->bit_stream, i_length);
828 if (i_dct_dc_size==0)
832 i_dct_dc_diff = GetBits( &p_vpar->bit_stream, i_dct_dc_size);
833 if ((i_dct_dc_diff & (1<<(i_dct_dc_size-1)))==0)
834 i_dct_dc_diff-= (1<<i_dct_dc_size) - 1;
837 /* Dump the variable length code */
838 //RemoveBits( &p_vpar->bit_stream,
839 // p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_length );
841 /* Read the actual code with the good length */
842 p_vpar->mb.pi_dc_dct_pred[i_cc] += i_dct_dc_diff;
844 p_mb->ppi_blocks[i_b][0] = ( p_vpar->mb.pi_dc_dct_pred[i_cc] <<
845 ( 3 - p_vpar->picture.i_intra_dc_precision ) );
847 i_nc = ( p_vpar->mb.pi_dc_dct_pred[i_cc] != 0 );
849 /* Decoding of the AC coefficients */
852 b_vlc_intra = p_vpar->picture.b_intra_vlc_format;
853 for( i_parse = 1; !p_vpar->b_die/*i_parse < 64*/; i_parse++ )
855 i_code = ShowBits( &p_vpar->bit_stream, 16 );
856 if( i_code >= 16384 )
860 i_run = pl_DCT_tab0a[(i_code>>8)-4].i_run;
861 i_level = pl_DCT_tab0a[(i_code>>8)-4].i_level;
862 i_length = pl_DCT_tab0a[(i_code>>8)-4].i_length;
863 //fprintf( stderr, "**********> %d, %d, %d *******\n", i_run, i_level, (i_code>>8)-4 );
867 i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
868 i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
869 i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
874 i_run = p_vpar->ppl_dct_coef[b_vlc_intra][i_code].i_run;
875 i_length = p_vpar->ppl_dct_coef[b_vlc_intra][i_code].i_length;
876 i_level = p_vpar->ppl_dct_coef[b_vlc_intra][i_code].i_level;
882 int intra_vlc_format = b_vlc_intra;
885 if (code>=16384 && !intra_vlc_format)
886 tab = pl_DCT_tab_ac[(code>>12)-4];
889 if (intra_vlc_format)
890 tab = pl_DCT_tab0a[(code>>8)-4];
892 tab = pl_DCT_tab0[(code>>8)-4];
896 if (intra_vlc_format)
897 tab = pl_DCT_tab1a[(code>>6)-8];
899 tab = pl_DCT_tab1[(code>>6)-8];
902 tab = pl_DCT_tab2[(code>>4)-16];
904 tab = pl_DCT_tab3[(code>>3)-16];
906 tab = pl_DCT_tab4[(code>>2)-16];
908 tab = pl_DCT_tab5[(code>>1)-16];
910 tab = pl_DCT_tab6[code-16];
913 fprintf( stderr, "invalid Huffman code in Decode_MPEG2_Intra_Block()\n");
916 if( (i_run != tab.i_run) || (i_length != tab.i_length) || (i_level != tab.i_level) )
918 fprintf( stderr, "ET M....... !!!\n" );
927 RemoveBits( &p_vpar->bit_stream, i_length );
932 i_run = GetBits( &p_vpar->bit_stream, 6 );
933 i_level = GetBits( &p_vpar->bit_stream, 12 );
934 /*p_mb->ppi_blocks[i_b][i_parse] = ( b_sign = ( i_level > 2047 ) )
935 ? ( -4096 + i_level )
937 i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
943 p_mb->pf_idct[i_b] = vdec_SparseIDCT;
944 p_mb->pi_sparse_pos[i_b] = i_coef;
948 p_mb->pf_idct[i_b] = vdec_IDCT;
954 b_sign = GetBits( &p_vpar->bit_stream, 1 );
966 i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
967 i_level = ( i_level *
968 p_vpar->mb.i_quantizer_scale *
969 pi_quant[i_pos] ) >> 4;
970 p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level;
973 intf_ErrMsg("vpar error: DCT coeff (intra) is out of bounds\n");
974 p_vpar->picture.b_error = 1;
982 /****************************************************************************
983 * MotionCode : Parse the next motion code
984 ****************************************************************************/
985 static __inline__ int MotionCode( vpar_thread_t * p_vpar )
988 static lookup_t pl_mv_tab0[8] =
989 { {-1,0}, {3,3}, {2,2}, {2,2}, {1,1}, {1,1}, {1,1}, {1,1} };
990 /* Table B-10, motion_code, codes 0000011 ... 000011x */
991 static lookup_t pl_mv_tab1[8] =
992 { {-1,0}, {-1,0}, {-1,0}, {7,6}, {6,6}, {5,6}, {4,5}, {4,5} };
993 /* Table B-10, motion_code, codes 0000001100 ... 000001011x */
994 static lookup_t pl_mv_tab2[12] = {
995 {16,9}, {15,9}, {14,9}, {13,9},
996 {12,9}, {11,9}, {10,8}, {10,8},
997 {9,8}, {9,8}, {8,8}, {8,8} };
999 if( GetBits( &p_vpar->bit_stream, 1 ) )
1003 if( (i_code = ShowBits( &p_vpar->bit_stream, 9) ) >= 64 )
1006 RemoveBits( &p_vpar->bit_stream, pl_mv_tab0[i_code].i_length );
1007 return( GetBits( &p_vpar->bit_stream, 1 ) ?
1008 -pl_mv_tab0[i_code].i_value : pl_mv_tab0[i_code].i_value );
1014 RemoveBits( &p_vpar->bit_stream, pl_mv_tab1[i_code].i_length );
1015 return( GetBits( &p_vpar->bit_stream, 1 ) ?
1016 -pl_mv_tab1[i_code].i_value : pl_mv_tab1[i_code].i_value );
1019 if( (i_code -= 12) < 0 )
1021 p_vpar->picture.b_error = 1;
1022 intf_DbgMsg( "vpar debug: Invalid motion_vector code\n" );
1026 RemoveBits( &p_vpar->bit_stream, pl_mv_tab2[i_code].i_length );
1027 return( GetBits( &p_vpar->bit_stream, 1 ) ?
1028 -pl_mv_tab2[i_code].i_value : pl_mv_tab2[i_code].i_value );
1031 /****************************************************************************
1032 * DecodeMotionVector : Decode a motion_vector
1033 ****************************************************************************/
1034 static __inline__ void DecodeMotionVector( int * pi_prediction, int i_r_size,
1035 int i_motion_code, int i_motion_residual, int i_full_pel )
1037 int i_limit, i_vector;
1039 /* ISO/IEC 13818-1 section 7.6.3.1 */
1040 i_limit = 16 << i_r_size;
1041 i_vector = *pi_prediction >> i_full_pel;
1043 if( i_motion_code > 0 )
1045 i_vector += ((i_motion_code-1) << i_r_size) + i_motion_residual + 1;
1046 if( i_vector >= i_limit )
1047 i_vector -= i_limit + i_limit;
1049 else if( i_motion_code < 0 )
1051 i_vector -= ((-i_motion_code-1) << i_r_size) + i_motion_residual + 1;
1052 if( i_vector < -i_limit )
1053 i_vector += i_limit + i_limit;
1055 *pi_prediction = i_vector << i_full_pel;
1058 /****************************************************************************
1059 * MotionVector : Parse the next motion_vector field
1060 ****************************************************************************/
1061 static __inline__ void MotionVector( vpar_thread_t * p_vpar,
1062 macroblock_t * p_mb, int i_r,
1063 int i_s, int i_full_pel, int i_structure )
1065 int i_motion_code, i_motion_residual;
1067 int pi_dm_vector[2];
1069 i_r_size = p_vpar->picture.ppi_f_code[i_s][0] - 1;
1070 i_motion_code = MotionCode( p_vpar );
1071 i_motion_residual = (i_r_size != 0 && i_motion_code != 0) ?
1072 GetBits( &p_vpar->bit_stream, i_r_size) : 0;
1073 DecodeMotionVector( &p_vpar->mb.pppi_pmv[i_r][i_s][0], i_r_size,
1074 i_motion_code, i_motion_residual, i_full_pel );
1075 p_mb->pppi_motion_vectors[i_r][i_s][0] = p_vpar->mb.pppi_pmv[i_r][i_s][0];
1077 if( p_vpar->mb.b_dmv )
1079 if( GetBits(&p_vpar->bit_stream, 1) )
1081 pi_dm_vector[0] = GetBits( &p_vpar->bit_stream, 1 ) ? -1 : 1;
1085 pi_dm_vector[0] = 0;
1089 i_r_size = p_vpar->picture.ppi_f_code[i_s][1]-1;
1090 i_motion_code = MotionCode( p_vpar );
1091 i_motion_residual = (i_r_size != 0 && i_motion_code != 0) ?
1092 GetBits( &p_vpar->bit_stream, i_r_size) : 0;
1095 if( (p_vpar->mb.i_mv_format == MOTION_FIELD)
1096 && (i_structure == FRAME_STRUCTURE) )
1098 p_vpar->mb.pppi_pmv[i_r][i_s][1] >>= 1;
1101 DecodeMotionVector( &p_vpar->mb.pppi_pmv[i_r][i_s][1], i_r_size,
1102 i_motion_code, i_motion_residual, i_full_pel );
1104 if( (p_vpar->mb.i_mv_format == MOTION_FIELD)
1105 && (i_structure == FRAME_STRUCTURE) )
1106 p_vpar->mb.pppi_pmv[i_r][i_s][1] <<= 1;
1108 p_mb->pppi_motion_vectors[i_r][i_s][1] = p_vpar->mb.pppi_pmv[i_r][i_s][1];
1110 if( p_vpar->mb.b_dmv )
1112 if( GetBits(&p_vpar->bit_stream, 1) )
1114 pi_dm_vector[1] = GetBits( &p_vpar->bit_stream, 1 ) ? -1 : 1;
1118 pi_dm_vector[1] = 0;
1121 /* Dual Prime Arithmetic (ISO/IEC 13818-2 section 7.6.3.6). */
1123 #define i_mv_x p_mb->pppi_motion_vectors[0][0][0]
1124 if( i_structure == FRAME_STRUCTURE )
1126 #define i_mv_y (p_mb->pppi_motion_vectors[0][0][1] << 1)
1127 if( p_vpar->picture.b_top_field_first )
1129 /* vector for prediction of top field from bottom field */
1130 p_mb->ppi_dmv[0][0] = ((i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1131 p_mb->ppi_dmv[0][1] = ((i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] - 1;
1133 /* vector for prediction of bottom field from top field */
1134 p_mb->ppi_dmv[1][0] = ((3*i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1135 p_mb->ppi_dmv[1][1] = ((3*i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] + 1;
1139 /* vector for prediction of top field from bottom field */
1140 p_mb->ppi_dmv[0][0] = ((3*i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1141 p_mb->ppi_dmv[0][1] = ((3*i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] - 1;
1143 /* vector for prediction of bottom field from top field */
1144 p_mb->ppi_dmv[1][0] = ((i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1145 p_mb->ppi_dmv[1][1] = ((i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] + 1;
1151 #define i_mv_y p_mb->pppi_motion_vectors[0][0][1]
1152 /* vector for prediction from field of opposite 'parity' */
1153 p_mb->ppi_dmv[0][0] = ((i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1154 p_mb->ppi_dmv[0][1] = ((i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1];
1156 /* correct for vertical field shift */
1157 if( p_vpar->picture.i_structure == TOP_FIELD )
1158 p_mb->ppi_dmv[0][1]--;
1160 p_mb->ppi_dmv[0][1]++;
1167 /*****************************************************************************
1168 * DecodeMVMPEG1 : Parse the next MPEG-1 motion vectors
1169 *****************************************************************************/
1170 static __inline__ void DecodeMVMPEG1( vpar_thread_t * p_vpar,
1171 macroblock_t * p_mb, int i_s, int i_structure )
1173 MotionVector( p_vpar, p_mb, 0, i_s,
1174 p_vpar->picture.pb_full_pel_vector[i_s], i_structure );
1177 /*****************************************************************************
1178 * DecodeMVMPEG2 : Parse the next MPEG-2 motion_vectors field
1179 *****************************************************************************/
1180 static __inline__ void DecodeMVMPEG2( vpar_thread_t * p_vpar,
1181 macroblock_t * p_mb, int i_s, int i_structure )
1183 if( p_vpar->mb.i_mv_count == 1 )
1185 if( p_vpar->mb.i_mv_format == MOTION_FIELD && !p_vpar->mb.b_dmv )
1187 p_mb->ppi_field_select[0][i_s] = p_mb->ppi_field_select[1][i_s]
1188 = GetBits( &p_vpar->bit_stream, 1 );
1190 MotionVector( p_vpar, p_mb, 0, i_s, 0, i_structure );
1191 p_vpar->mb.pppi_pmv[1][i_s][0] = p_vpar->mb.pppi_pmv[0][i_s][0];
1192 p_vpar->mb.pppi_pmv[1][i_s][1] = p_vpar->mb.pppi_pmv[0][i_s][1];
1193 p_mb->pppi_motion_vectors[1][i_s][0] = p_vpar->mb.pppi_pmv[0][i_s][0];
1194 p_mb->pppi_motion_vectors[1][i_s][1] = p_vpar->mb.pppi_pmv[0][i_s][1];
1198 p_mb->ppi_field_select[0][i_s] = GetBits( &p_vpar->bit_stream, 1 );
1199 MotionVector( p_vpar, p_mb, 0, i_s, 0, i_structure );
1200 p_mb->ppi_field_select[1][i_s] = GetBits( &p_vpar->bit_stream, 1 );
1201 MotionVector( p_vpar, p_mb, 1, i_s, 0, i_structure );
1207 * Macroblock information structures
1210 /*****************************************************************************
1211 * MacroblockAddressIncrement : Get the macroblock_address_increment field
1212 *****************************************************************************/
1213 static __inline__ int MacroblockAddressIncrement( vpar_thread_t * p_vpar )
1216 /* Index in the lookup table mb_addr_inc */
1217 int i_index = ShowBits( &p_vpar->bit_stream, 11 );
1219 /* Test the presence of the escape character */
1220 while( i_index == 8 )
1222 RemoveBits( &p_vpar->bit_stream, 11 );
1224 i_index = ShowBits( &p_vpar->bit_stream, 11 );
1227 /* Affect the value from the lookup table */
1228 i_addr_inc += p_vpar->pl_mb_addr_inc[i_index].i_value;
1230 /* Dump the good number of bits */
1231 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_mb_addr_inc[i_index].i_length );
1236 /*****************************************************************************
1237 * IMBType : macroblock_type in I pictures
1238 *****************************************************************************/
1239 static __inline__ int IMBType( vpar_thread_t * p_vpar )
1241 /* Take two bits for testing */
1242 int i_type = ShowBits( &p_vpar->bit_stream, 2 );
1244 /* Lookup table for macroblock_type */
1245 static lookup_t pl_mb_Itype[4] = { {MB_ERROR, 0},
1246 {MB_QUANT|MB_INTRA, 2},
1249 /* Dump the good number of bits */
1250 RemoveBits( &p_vpar->bit_stream, pl_mb_Itype[i_type].i_length );
1251 return pl_mb_Itype[i_type].i_value;
1254 /*****************************************************************************
1255 * PMBType : macroblock_type in P pictures
1256 *****************************************************************************/
1257 static __inline__ int PMBType( vpar_thread_t * p_vpar )
1259 /* Testing on 6 bits */
1260 int i_type = ShowBits( &p_vpar->bit_stream, 6 );
1262 /* Dump the good number of bits */
1263 RemoveBits( &p_vpar->bit_stream, p_vpar->ppl_mb_type[0][i_type].i_length );
1264 /* return the value from the lookup table for P type */
1265 return p_vpar->ppl_mb_type[0][i_type].i_value;
1268 /*****************************************************************************
1269 * BMBType : macroblock_type in B pictures
1270 *****************************************************************************/
1271 static __inline__ int BMBType( vpar_thread_t * p_vpar )
1273 /* Testing on 6 bits */
1274 int i_type = ShowBits( &p_vpar->bit_stream, 6 );
1276 /* Dump the good number of bits */
1277 RemoveBits( &p_vpar->bit_stream, p_vpar->ppl_mb_type[1][i_type].i_length );
1279 /* return the value from the lookup table for B type */
1280 return p_vpar->ppl_mb_type[1][i_type].i_value;
1283 /*****************************************************************************
1284 * DMBType : macroblock_type in D pictures
1285 *****************************************************************************/
1286 static __inline__ int DMBType( vpar_thread_t * p_vpar )
1288 return GetBits( &p_vpar->bit_stream, 1 );
1291 /*****************************************************************************
1292 * CodedPattern420 : coded_block_pattern with 4:2:0 chroma
1293 *****************************************************************************/
1294 static __inline__ int CodedPattern420( vpar_thread_t * p_vpar )
1296 /* Take the max 9 bits length vlc code for testing */
1297 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1299 /* Trash the good number of bits read in the lookup table */
1300 RemoveBits( &p_vpar->bit_stream, pl_coded_pattern[i_vlc].i_length );
1302 /* return the value from the vlc table */
1303 return pl_coded_pattern[i_vlc].i_value;
1306 /*****************************************************************************
1307 * CodedPattern422 : coded_block_pattern with 4:2:2 chroma
1308 *****************************************************************************/
1309 static __inline__ int CodedPattern422( vpar_thread_t * p_vpar )
1311 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1313 RemoveBits( &p_vpar->bit_stream, pl_coded_pattern[i_vlc].i_length );
1315 /* Supplementary 2 bits long code for 4:2:2 format */
1316 return pl_coded_pattern[i_vlc].i_value |
1317 (GetBits( &p_vpar->bit_stream, 2 ) << 6);
1320 /*****************************************************************************
1321 * CodedPattern444 : coded_block_pattern with 4:4:4 chroma
1322 *****************************************************************************/
1323 static __inline__ int CodedPattern444( vpar_thread_t * p_vpar )
1325 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1327 RemoveBits( &p_vpar->bit_stream, pl_coded_pattern[i_vlc].i_length );
1329 return pl_coded_pattern[i_vlc].i_value |
1330 (GetBits( &p_vpar->bit_stream, 6 ) << 6);
1333 /*****************************************************************************
1334 * InitMacroblock : Initialize macroblock values
1335 *****************************************************************************/
1336 static __inline__ void InitMacroblock( vpar_thread_t * p_vpar,
1337 macroblock_t * p_mb, int i_coding_type,
1338 int i_chroma_format,
1340 boolean_t b_second_field )
1342 p_mb->i_chroma_nb_blocks = 1 << i_chroma_format;
1343 p_mb->p_picture = p_vpar->picture.p_picture;
1345 if( i_coding_type == B_CODING_TYPE )
1346 p_mb->p_backward = p_vpar->sequence.p_backward;
1348 p_mb->p_backward = NULL;
1349 if( (i_coding_type == P_CODING_TYPE) || (i_coding_type == B_CODING_TYPE) )
1350 p_mb->p_forward = p_vpar->sequence.p_forward;
1352 p_mb->p_forward = NULL;
1354 p_mb->i_l_x = p_vpar->mb.i_l_x;
1355 p_mb->i_c_x = p_vpar->mb.i_c_x;
1356 p_mb->i_motion_l_y = p_vpar->mb.i_l_y;
1357 p_mb->i_motion_c_y = p_vpar->mb.i_c_y;
1358 if( (p_mb->b_motion_field = (i_structure == BOTTOM_FIELD)) )
1360 p_mb->i_motion_l_y--;
1361 p_mb->i_motion_c_y--;
1363 p_mb->i_addb_l_stride = (p_mb->i_l_stride = p_vpar->picture.i_l_stride) - 8;
1364 p_mb->i_addb_c_stride = (p_mb->i_c_stride = p_vpar->picture.i_c_stride) - 8;
1365 p_mb->b_P_second = ( b_second_field && i_coding_type == P_CODING_TYPE );
1368 /*****************************************************************************
1369 * UpdateContext : Update the p_vpar contextual values
1370 *****************************************************************************/
1371 static __inline__ void UpdateContext( vpar_thread_t * p_vpar, int i_structure )
1373 /* Update macroblock real position. */
1374 p_vpar->mb.i_l_x += 16;
1375 p_vpar->mb.i_l_y += (p_vpar->mb.i_l_x / p_vpar->sequence.i_width)
1376 * (2 - (i_structure == FRAME_STRUCTURE)) * 16;
1377 p_vpar->mb.i_l_x %= p_vpar->sequence.i_width;
1379 p_vpar->mb.i_c_x += p_vpar->sequence.i_chroma_mb_width;
1380 p_vpar->mb.i_c_y += (p_vpar->mb.i_c_x / p_vpar->sequence.i_chroma_width)
1381 * (2 - (i_structure == FRAME_STRUCTURE))
1382 * p_vpar->sequence.i_chroma_mb_height;
1383 p_vpar->mb.i_c_x %= p_vpar->sequence.i_chroma_width;
1386 /*****************************************************************************
1387 * SkippedMacroblock : Generate a skipped macroblock with NULL motion vector
1388 *****************************************************************************/
1389 static __inline__ void SkippedMacroblock( vpar_thread_t * p_vpar, int i_mb,
1390 int i_mb_base, int i_coding_type,
1391 int i_chroma_format,
1393 boolean_t b_second_field )
1395 macroblock_t * p_mb;
1397 static f_motion_t pf_motion_skipped[4][4] =
1399 {NULL, NULL, NULL, NULL},
1400 {NULL, vdec_MotionFieldField420, vdec_MotionFieldField420,
1401 vdec_MotionFrameFrame420},
1402 {NULL, vdec_MotionFieldField422, vdec_MotionFieldField422,
1403 vdec_MotionFrameFrame422},
1404 {NULL, vdec_MotionFieldField444, vdec_MotionFieldField444,
1405 vdec_MotionFrameFrame444},
1408 if( i_coding_type == I_CODING_TYPE )
1410 intf_DbgMsg("vpar error: skipped macroblock in I-picture\n");
1411 p_vpar->picture.b_error = 1;
1415 if( (p_mb = vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
1421 p_vpar->picture.pp_mb[i_mb_base + i_mb] = p_mb;
1424 InitMacroblock( p_vpar, p_mb, i_coding_type, i_chroma_format,
1425 i_structure, b_second_field );
1427 /* Motion type is picture structure. */
1428 p_mb->pf_motion = pf_motion_skipped[i_chroma_format]
1430 p_mb->i_mb_type = MB_MOTION_FORWARD;
1431 p_mb->i_coded_block_pattern = 0;
1432 memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
1434 /* Set the field we use for motion compensation */
1435 p_mb->ppi_field_select[0][0] = p_mb->ppi_field_select[0][1]
1436 = ( i_structure == BOTTOM_FIELD );
1438 UpdateContext( p_vpar, i_structure );
1441 /* Decode the macroblock NOW ! */
1442 vdec_DecodeMacroblock( p_vpar->pp_vdec[0], p_mb );
1446 /*****************************************************************************
1447 * MacroblockModes : Get the macroblock_modes structure
1448 *****************************************************************************/
1449 static __inline__ void MacroblockModes( vpar_thread_t * p_vpar,
1450 macroblock_t * p_mb,
1451 int i_chroma_format,
1455 static int ppi_mv_count[2][4] = { {0, 1, 2, 1}, {0, 2, 1, 1} };
1456 static int ppi_mv_format[2][4] = { {0, 1, 1, 1}, {0, 1, 2, 1} };
1458 /* Get macroblock_type. */
1459 switch( i_coding_type )
1462 p_mb->i_mb_type = PMBType( p_vpar );
1465 p_mb->i_mb_type = BMBType( p_vpar );
1468 p_mb->i_mb_type = IMBType( p_vpar );
1471 p_mb->i_mb_type = DMBType( p_vpar );
1474 /* SCALABILITY : warning, we don't know if spatial_temporal_weight_code
1475 * has to be dropped, take care if you use scalable streams. */
1476 /* RemoveBits( &p_vpar->bit_stream, 2 ); */
1478 if( (i_coding_type == P_CODING_TYPE || i_coding_type == B_CODING_TYPE)
1479 && (p_mb->i_mb_type & (MB_MOTION_FORWARD | MB_MOTION_BACKWARD)) )
1481 if( !(i_structure == FRAME_STRUCTURE
1482 && p_vpar->picture.b_frame_pred_frame_dct) )
1484 p_vpar->mb.i_motion_type = GetBits( &p_vpar->bit_stream, 2 );
1488 p_vpar->mb.i_motion_type = MOTION_FRAME;
1492 p_vpar->mb.i_mv_count = ppi_mv_count[i_structure == FRAME_STRUCTURE]
1493 [p_vpar->mb.i_motion_type];
1494 p_vpar->mb.i_mv_format = ppi_mv_format[i_structure == FRAME_STRUCTURE]
1495 [p_vpar->mb.i_motion_type];
1496 p_vpar->mb.b_dmv = p_vpar->mb.i_motion_type == MOTION_DMV;
1499 p_vpar->mb.b_dct_type = 0;
1500 if( (i_structure == FRAME_STRUCTURE) &&
1501 (!p_vpar->picture.b_frame_pred_frame_dct) &&
1502 (p_mb->i_mb_type & (MB_PATTERN|MB_INTRA)) )
1504 if( (p_vpar->mb.b_dct_type = GetBits( &p_vpar->bit_stream, 1 )) )
1506 /* The DCT is coded on fields. Jump one line between each
1508 p_mb->i_addb_l_stride <<= 1;
1509 p_mb->i_addb_l_stride += 8;
1510 /* With CHROMA_420, the DCT is necessarily frame-coded. */
1511 if( i_chroma_format != CHROMA_420 )
1513 p_mb->i_addb_c_stride <<= 1;
1514 p_mb->i_addb_c_stride += 8;
1520 /*****************************************************************************
1521 * ParseMacroblock : Parse the next macroblock
1522 *****************************************************************************/
1523 #define PARSEERROR \
1524 if( p_vpar->picture.b_error ) \
1526 /* Mark this block as skipped (better than green blocks), and \
1527 * go to the next slice. */ \
1528 (*pi_mb_address)--; \
1529 vpar_DestroyMacroblock( &p_vpar->vfifo, p_mb ); \
1534 #define PARSEBLOCKS( MPEG1FUNC, MPEG2FUNC ) \
1536 i_mask = 1 << (3 + (1 << i_chroma_format)); \
1539 p_data1 = p_mb->p_picture->p_y \
1540 + p_mb->i_l_x + p_vpar->mb.i_l_y*(p_vpar->sequence.i_width); \
1542 for( i_b = 0 ; i_b < 4 ; i_b++, i_mask >>= 1 ) \
1544 if( p_mb->i_coded_block_pattern & i_mask ) \
1546 memset( p_mb->ppi_blocks[i_b], 0, 64*sizeof(dctelem_t) ); \
1548 MPEG2FUNC( p_vpar, p_mb, i_b, i_chroma_format ); \
1550 MPEG1FUNC( p_vpar, p_mb, i_b, i_chroma_format ); \
1552 /* Calculate block coordinates. */ \
1553 p_mb->p_data[i_b] = p_data1 \
1554 + pi_y[p_vpar->mb.b_dct_type][i_b] \
1555 * p_vpar->sequence.i_width \
1563 p_data1 = p_mb->p_picture->p_u \
1565 + p_vpar->mb.i_c_y \
1566 * (p_vpar->sequence.i_chroma_width); \
1567 p_data2 = p_mb->p_picture->p_v \
1569 + p_vpar->mb.i_c_y \
1570 * (p_vpar->sequence.i_chroma_width); \
1572 for( i_b = 4; i_b < 4 + (1 << i_chroma_format); \
1573 i_b++, i_mask >>= 1 ) \
1575 yuv_data_t * pp_data[2] = {p_data1, p_data2}; \
1577 if( p_mb->i_coded_block_pattern & i_mask ) \
1579 memset( p_mb->ppi_blocks[i_b], 0, 64*sizeof(dctelem_t) ); \
1581 MPEG2FUNC( p_vpar, p_mb, i_b, i_chroma_format ); \
1583 MPEG1FUNC( p_vpar, p_mb, i_b, i_chroma_format ); \
1585 /* Calculate block coordinates. */ \
1586 p_mb->p_data[i_b] = pp_data[i_b & 1] \
1587 + pi_y[p_vpar->mb.b_dct_type][i_b] \
1588 * p_vpar->sequence.i_chroma_width \
1596 static __inline__ void ParseMacroblock(
1597 vpar_thread_t * p_vpar,
1598 int * pi_mb_address, /* previous address to be
1599 * used for mb_addr_incr */
1600 int i_mb_previous, /* actual previous mb */
1601 int i_mb_base, /* non-zero if field structure */
1602 /* The following parameters are explicit in
1603 * optimized routines : */
1604 boolean_t b_mpeg2, /* you know what ? */
1605 int i_coding_type, /* I, P, B or D */
1606 int i_chroma_format, /* 4:2:0, 4:2:2 or 4:4:4 */
1607 int i_structure, /* T(OP), B(OTTOM) or F(RAME) */
1608 boolean_t b_second_field ) /* second field of a
1611 static f_motion_t pppf_motion[4][2][4] =
1613 { {NULL, NULL, NULL, NULL},
1614 {NULL, NULL, NULL, NULL}
1616 { {NULL, vdec_MotionFieldField420, vdec_MotionField16x8420,
1617 vdec_MotionFieldDMV420},
1618 {NULL, vdec_MotionFrameField420, vdec_MotionFrameFrame420,
1619 vdec_MotionFrameDMV420}
1621 { {NULL, vdec_MotionFieldField422, vdec_MotionField16x8422,
1622 vdec_MotionFieldDMV422},
1623 {NULL, vdec_MotionFrameField422, vdec_MotionFrameFrame422,
1624 vdec_MotionFrameDMV422}
1626 { {NULL, vdec_MotionFieldField444, vdec_MotionField16x8444,
1627 vdec_MotionFieldDMV444},
1628 {NULL, vdec_MotionFrameField444, vdec_MotionFrameFrame444,
1629 vdec_MotionFrameDMV444}
1632 static int pi_x[12] = {0,8,0,8,0,0,0,0,8,8,8,8};
1633 static int pi_y[2][12] = { {0,0,8,8,0,0,8,8,0,0,8,8},
1634 {0,0,1,1,0,0,1,1,0,0,1,1} };
1635 int i_mb, i_b, i_mask;
1637 macroblock_t * p_mb;
1638 yuv_data_t * p_data1;
1639 yuv_data_t * p_data2;
1643 i_inc = MacroblockAddressIncrement( p_vpar );
1644 *pi_mb_address += i_inc;
1648 intf_ErrMsg( "vpar error: bad address increment (%d)\n", i_inc );
1649 p_vpar->picture.b_error = 1;
1653 if( *pi_mb_address - i_mb_previous - 1 )
1655 /* Skipped macroblock (ISO/IEC 13818-2 7.6.6). */
1657 /* Reset DC predictors (7.2.1). */
1658 p_vpar->mb.pi_dc_dct_pred[0] = p_vpar->mb.pi_dc_dct_pred[1]
1659 = p_vpar->mb.pi_dc_dct_pred[2]
1660 = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
1662 if( i_coding_type == P_CODING_TYPE )
1664 /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
1665 memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
1668 for( i_mb = i_mb_previous + 1; i_mb < *pi_mb_address; i_mb++ )
1670 SkippedMacroblock( p_vpar, i_mb, i_mb_base, i_coding_type,
1671 i_chroma_format, i_structure, b_second_field );
1675 /* Get a macroblock structure. */
1676 if( (p_mb = vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
1682 p_vpar->picture.pp_mb[i_mb_base + *pi_mb_address] = p_mb;
1685 InitMacroblock( p_vpar, p_mb, i_coding_type, i_chroma_format,
1686 i_structure, b_second_field );
1688 /* Parse off macroblock_modes structure. */
1689 MacroblockModes( p_vpar, p_mb, i_chroma_format, i_coding_type,
1692 if( p_mb->i_mb_type & MB_QUANT )
1694 LoadQuantizerScale( p_vpar );
1697 if( (i_coding_type == P_CODING_TYPE || i_coding_type == B_CODING_TYPE)
1698 && (p_mb->i_mb_type & MB_MOTION_FORWARD) )
1701 DecodeMVMPEG2( p_vpar, p_mb, 0, i_structure );
1703 DecodeMVMPEG1( p_vpar, p_mb, 0, i_structure );
1707 if( (i_coding_type == B_CODING_TYPE)
1708 && (p_mb->i_mb_type & MB_MOTION_BACKWARD) )
1711 DecodeMVMPEG2( p_vpar, p_mb, 1, i_structure );
1713 DecodeMVMPEG1( p_vpar, p_mb, 1, i_structure );
1717 if( i_coding_type == P_CODING_TYPE
1718 && !(p_mb->i_mb_type & (MB_MOTION_FORWARD|MB_INTRA)) )
1720 /* Special No-MC macroblock in P pictures (7.6.3.5). */
1721 p_mb->i_mb_type |= MB_MOTION_FORWARD;
1722 memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
1723 memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
1724 p_vpar->mb.i_motion_type = 1 + (i_structure == FRAME_STRUCTURE);
1725 p_mb->ppi_field_select[0][0] = (i_structure == BOTTOM_FIELD);
1728 if( (i_coding_type != I_CODING_TYPE) && !(p_mb->i_mb_type & MB_INTRA) )
1730 /* Reset DC predictors (7.2.1). */
1731 p_vpar->mb.pi_dc_dct_pred[0] = p_vpar->mb.pi_dc_dct_pred[1]
1732 = p_vpar->mb.pi_dc_dct_pred[2]
1733 = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
1735 /* Motion function pointer. */
1736 p_mb->pf_motion = pppf_motion[i_chroma_format]
1737 [i_structure == FRAME_STRUCTURE]
1738 [p_vpar->mb.i_motion_type];
1740 if( p_mb->i_mb_type & MB_PATTERN )
1742 switch( i_chroma_format )
1745 p_mb->i_coded_block_pattern = CodedPattern420( p_vpar );
1748 p_mb->i_coded_block_pattern = CodedPattern422( p_vpar );
1751 p_mb->i_coded_block_pattern = CodedPattern444( p_vpar );
1756 p_mb->i_coded_block_pattern = 0;
1760 * Effectively decode blocks.
1762 PARSEBLOCKS( DecodeMPEG1NonIntra, DecodeMPEG2NonIntra )
1766 if( !p_vpar->picture.b_concealment_mv )
1768 /* Reset MV predictors. */
1769 memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
1774 DecodeMVMPEG2( p_vpar, p_mb, 0, i_structure );
1776 DecodeMVMPEG1( p_vpar, p_mb, 0, i_structure );
1777 RemoveBits( &p_vpar->bit_stream, 1 );
1780 if( p_mb->i_mb_type & MB_PATTERN )
1782 switch( i_chroma_format )
1785 p_mb->i_coded_block_pattern = CodedPattern420( p_vpar );
1788 p_mb->i_coded_block_pattern = CodedPattern422( p_vpar );
1791 p_mb->i_coded_block_pattern = CodedPattern444( p_vpar );
1796 p_mb->i_coded_block_pattern =
1797 (1 << (4 + (1 << i_chroma_format))) - 1;
1801 * Effectively decode blocks.
1803 PARSEBLOCKS( DecodeMPEG1Intra, DecodeMPEG2Intra )
1806 if( !p_vpar->picture.b_error )
1808 UpdateContext( p_vpar, i_structure );
1810 /* Decode the macroblock NOW ! */
1811 vdec_DecodeMacroblock( p_vpar->pp_vdec[0], p_mb );
1816 /* Mark this block as skipped (better than green blocks), and go
1817 * to the next slice. */
1819 vpar_DestroyMacroblock( &p_vpar->vfifo, p_mb );
1824 * Picture data parsing management
1827 /*****************************************************************************
1828 * SliceHeader : Parse the next slice structure
1829 *****************************************************************************/
1830 static __inline__ void SliceHeader( vpar_thread_t * p_vpar,
1831 int * pi_mb_address, int i_mb_base,
1832 u32 i_vert_code, boolean_t b_high,
1833 boolean_t b_dp_scalable,
1834 boolean_t b_mpeg2, int i_coding_type,
1835 int i_chroma_format, int i_structure,
1836 boolean_t b_second_field )
1838 int i_mb_address_save = *pi_mb_address;
1840 p_vpar->picture.b_error = 0;
1844 /* Picture with more than 2800 lines. */
1845 i_vert_code += GetBits( &p_vpar->bit_stream, 3 ) << 7;
1849 /* DATA_PARTITIONING scalability. */
1850 RemoveBits( &p_vpar->bit_stream, 7 ); /* priority_breakpoint */
1853 LoadQuantizerScale( p_vpar );
1855 if( GetBits( &p_vpar->bit_stream, 1 ) )
1857 /* intra_slice, slice_id */
1858 RemoveBits( &p_vpar->bit_stream, 8 );
1859 /* extra_information_slice */
1860 while( GetBits( &p_vpar->bit_stream, 1 ) )
1862 RemoveBits( &p_vpar->bit_stream, 8 );
1865 *pi_mb_address = (i_vert_code - 1)*p_vpar->sequence.i_mb_width;
1867 if( *pi_mb_address < i_mb_address_save )
1869 intf_ErrMsg( "vpar error: slices do not follow, maybe a PES has been trashed\n" );
1870 p_vpar->picture.b_error = 1;
1874 /* Reset DC coefficients predictors (ISO/IEC 13818-2 7.2.1). */
1875 p_vpar->mb.pi_dc_dct_pred[0] = p_vpar->mb.pi_dc_dct_pred[1]
1876 = p_vpar->mb.pi_dc_dct_pred[2]
1877 = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
1879 /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
1880 memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
1884 if( i_mb_address_save >= p_vpar->sequence.i_mb_size )
1886 p_vpar->picture.b_error = 1;
1889 ParseMacroblock( p_vpar, pi_mb_address, i_mb_address_save,
1890 i_mb_base, b_mpeg2, i_coding_type,
1891 i_chroma_format, i_structure,
1893 i_mb_address_save = *pi_mb_address;
1894 if( p_vpar->picture.b_error )
1899 while( ShowBits( &p_vpar->bit_stream, 23 ) && !p_vpar->b_die );
1900 NextStartCode( p_vpar );
1903 /*****************************************************************************
1904 * PictureData : Parse off all macroblocks (ISO/IEC 13818-2 6.2.3.7)
1905 *****************************************************************************/
1906 static __inline__ void PictureData( vpar_thread_t * p_vpar, int i_mb_base,
1907 boolean_t b_high, boolean_t b_dp_scalable,
1908 boolean_t b_mpeg2, int i_coding_type,
1909 int i_chroma_format, int i_structure,
1910 boolean_t b_second_field )
1912 int i_mb_address = 0;
1915 NextStartCode( p_vpar );
1916 while( ((i_coding_type != I_CODING_TYPE && i_coding_type != D_CODING_TYPE)
1917 || !p_vpar->picture.b_error)
1918 && i_mb_address+i_mb_base < p_vpar->sequence.i_mb_size
1921 if( ((i_dummy = ShowBits( &p_vpar->bit_stream, 32 ))
1922 < SLICE_START_CODE_MIN) ||
1923 (i_dummy > SLICE_START_CODE_MAX) )
1925 intf_DbgMsg("vpar debug: premature end of picture\n");
1926 p_vpar->picture.b_error = 1;
1929 RemoveBits32( &p_vpar->bit_stream );
1931 /* Decode slice data. */
1932 SliceHeader( p_vpar, &i_mb_address, i_mb_base, i_dummy & 255,
1933 b_high, b_dp_scalable, b_mpeg2, i_coding_type,
1934 i_chroma_format, i_structure, b_second_field );
1937 /* Try to recover from error. If we missed less than half the
1938 * number of macroblocks of the picture, mark the missed ones
1940 if( (i_coding_type == P_CODING_TYPE || i_coding_type == B_CODING_TYPE)
1941 && p_vpar->picture.b_error &&
1942 ( (i_mb_address-i_mb_base) > (p_vpar->sequence.i_mb_size >> 1)
1943 || (i_structure != FRAME_STRUCTURE
1944 && (i_mb_address-i_mb_base) > (p_vpar->sequence.i_mb_size >> 2) ) ) )
1948 p_vpar->picture.b_error = 0;
1949 for( i_mb = i_mb_address + 1;
1950 i_mb < (p_vpar->sequence.i_mb_size
1951 << (i_structure != FRAME_STRUCTURE));
1954 SkippedMacroblock( p_vpar, i_mb, i_mb_base, i_coding_type,
1955 i_chroma_format, i_structure, b_second_field );
1960 /*****************************************************************************
1961 * vpar_PictureDataVWXYZ : Parse the next macroblock ; specific functions
1962 *****************************************************************************
1965 * X = chroma format ?
1967 * Z = second field ?
1968 *****************************************************************************/
1969 void vpar_PictureDataGENERIC( vpar_thread_t * p_vpar, int i_mb_base )
1971 PictureData( p_vpar, i_mb_base, (p_vpar->sequence.i_height > 2800),
1972 (p_vpar->sequence.i_scalable_mode == SC_DP),
1973 p_vpar->sequence.b_mpeg2, p_vpar->picture.i_coding_type,
1974 p_vpar->sequence.i_chroma_format,
1975 p_vpar->picture.i_structure,
1976 (p_vpar->picture.i_structure !=
1977 p_vpar->picture.i_current_structure) );
1980 #if (VPAR_OPTIM_LEVEL > 0)
1981 /* Optimizations for frame pictures */
1982 void vpar_PictureData2I420F0( vpar_thread_t * p_vpar, int i_mb_base )
1984 PictureData( p_vpar, 0, 0, 0, 1, I_CODING_TYPE, CHROMA_420,
1985 FRAME_STRUCTURE, 0 );
1988 void vpar_PictureData2P420F0( vpar_thread_t * p_vpar, int i_mb_base )
1990 PictureData( p_vpar, 0, 0, 0, 1, P_CODING_TYPE, CHROMA_420,
1991 FRAME_STRUCTURE, 0 );
1994 void vpar_PictureData2B420F0( vpar_thread_t * p_vpar, int i_mb_base )
1996 PictureData( p_vpar, 0, 0, 0, 1, B_CODING_TYPE, CHROMA_420,
1997 FRAME_STRUCTURE, 0 );
2001 #if (VPAR_OPTIM_LEVEL > 1)
2002 /* Optimizations for field pictures */
2003 void vpar_PictureData2I420TZ( vpar_thread_t * p_vpar, int i_mb_base )
2005 PictureData( p_vpar, i_mb_base, 0, 0, 1, I_CODING_TYPE, CHROMA_420,
2006 TOP_FIELD, (p_vpar->picture.i_structure !=
2007 p_vpar->picture.i_current_structure) );
2010 void vpar_PictureData2P420TZ( vpar_thread_t * p_vpar, int i_mb_base )
2012 PictureData( p_vpar, i_mb_base, 0, 0, 1, P_CODING_TYPE, CHROMA_420,
2013 TOP_FIELD, (p_vpar->picture.i_structure !=
2014 p_vpar->picture.i_current_structure) );
2017 void vpar_PictureData2B420TZ( vpar_thread_t * p_vpar, int i_mb_base )
2019 PictureData( p_vpar, i_mb_base, 0, 0, 1, B_CODING_TYPE, CHROMA_420,
2020 TOP_FIELD, (p_vpar->picture.i_structure !=
2021 p_vpar->picture.i_current_structure) );
2024 void vpar_PictureData2I420BZ( vpar_thread_t * p_vpar, int i_mb_base )
2026 PictureData( p_vpar, i_mb_base, 0, 0, 1, I_CODING_TYPE, CHROMA_420,
2027 BOTTOM_FIELD, (p_vpar->picture.i_structure !=
2028 p_vpar->picture.i_current_structure) );
2031 void vpar_PictureData2P420BZ( vpar_thread_t * p_vpar, int i_mb_base )
2033 PictureData( p_vpar, i_mb_base, 0, 0, 1, P_CODING_TYPE, CHROMA_420,
2034 BOTTOM_FIELD, (p_vpar->picture.i_structure !=
2035 p_vpar->picture.i_current_structure) );
2038 void vpar_PictureData2B420BZ( vpar_thread_t * p_vpar, int i_mb_base )
2040 PictureData( p_vpar, i_mb_base, 0, 0, 1, B_CODING_TYPE, CHROMA_420,
2041 BOTTOM_FIELD, (p_vpar->picture.i_structure !=
2042 p_vpar->picture.i_current_structure) );