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 *****************************************************************************/
29 #include <sys/types.h> /* on BSD, uio.h needs types.h */
30 #include <sys/uio.h> /* "input.h" */
39 #include "debug.h" /* XXX?? temporaire, requis par netlist.h */
42 #include "input_netlist.h"
43 #include "decoder_fifo.h"
45 #include "video_output.h"
47 #include "vdec_idct.h"
48 #include "video_decoder.h"
49 #include "vdec_motion.h"
51 #include "vpar_blocks.h"
52 #include "vpar_headers.h"
53 #include "vpar_synchro.h"
54 #include "video_parser.h"
55 #include "video_fifo.h"
57 static int i_count = 0;
60 * Welcome to vpar_blocks.c ! Here's where the heavy processor-critical parsing
61 * task is done. This file is divided in several parts :
62 * - Initialization of the lookup tables
63 * - Decoding of coded blocks
64 * - Decoding of motion vectors
65 * - Decoding of the other macroblock structures
66 * - Picture data parsing management (slices and error handling)
67 * It's a pretty long file. Good luck and have a nice day.
72 * Initialization tables
75 /* Table for coded_block_pattern resolution */
76 static lookup_t pl_coded_pattern[512] =
77 { {MB_ERROR, 0}, {0, 9}, {39, 9}, {27, 9}, {59, 9}, {55, 9}, {47, 9}, {31, 9},
78 {58, 8}, {58, 8}, {54, 8}, {54, 8}, {46, 8}, {46, 8}, {30, 8}, {30, 8},
79 {57, 8}, {57, 8}, {53, 8}, {53, 8}, {45, 8}, {45, 8}, {29, 8}, {29, 8},
80 {38, 8}, {38, 8}, {26, 8}, {26, 8}, {37, 8}, {37, 8}, {25, 8}, {25, 8},
81 {43, 8}, {43, 8}, {23, 8}, {23, 8}, {51, 8}, {51, 8}, {15, 8}, {15, 8},
82 {42, 8}, {42, 8}, {22, 8}, {22, 8}, {50, 8}, {50, 8}, {14, 8}, {14, 8},
83 {41, 8}, {41, 8}, {21, 8}, {21, 8}, {49, 8}, {49, 8}, {13, 8}, {13, 8},
84 {35, 8}, {35, 8}, {19, 8}, {19, 8}, {11, 8}, {11, 8}, {7, 8}, {7, 8},
85 {34, 7}, {34, 7}, {34, 7}, {34, 7}, {18, 7}, {18, 7}, {18, 7}, {18, 7},
86 {10, 7}, {10, 7}, {10, 7}, {10, 7}, {6, 7}, {6, 7}, {6, 7}, {6, 7},
87 {33, 7}, {33, 7}, {33, 7}, {33, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7},
88 {9, 7}, {9, 7}, {9, 7}, {9, 7}, {5, 7}, {5, 7}, {5, 7}, {5, 7},
89 {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6},
90 {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6},
91 {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6},
92 {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6},
93 {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5},
94 {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5},
95 {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5},
96 {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5},
97 {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5},
98 {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5},
99 {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5},
100 {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5},
101 {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5},
102 {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5},
103 {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5},
104 {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5},
105 {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5},
106 {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5},
107 {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5},
108 {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5},
109 {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5},
110 {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5},
111 {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5},
112 {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5},
113 {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5},
114 {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5},
115 {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5},
116 {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5},
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 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4},
120 {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 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 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4},
124 {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 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 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4},
128 {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 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 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
132 {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4},
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},
139 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3},
140 {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3} };
142 /* Tables for dc DCT coefficients
143 * Tables are cut in two parts to reduce memory occupation
146 /* Table B-12, dct_dc_size_luminance, codes 00XXX ... 11110 */
147 static lookup_t pl_dct_dc_lum_init_table_1[32] =
148 { {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
149 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
150 {0, 3}, {0, 3}, {0, 3}, {0, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3},
151 {4, 3}, {4, 3}, {4, 3}, {4, 3}, {5, 4}, {5, 4}, {6, 5}, {MB_ERROR, 0}
154 /* Table B-12, dct_dc_size_luminance, codes 111110xxx ... 111111111 */
155 static lookup_t pl_dct_dc_lum_init_table_2[32] =
156 { {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6}, {7, 6},
157 {8, 7}, {8, 7}, {8, 7}, {8, 7}, {9, 8}, {9, 8}, {10,9}, {11,9},
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},
160 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0},
161 {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}, {MB_ERROR, 0}
164 /* Table B-13, dct_dc_size_chrominance, codes 00xxx ... 11110 */
165 static lookup_t pl_dct_dc_chrom_init_table_1[32] =
166 { {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2},
167 {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2},
168 {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2},
169 {3, 3}, {3, 3}, {3, 3}, {3, 3}, {4, 4}, {4, 4}, {5, 5}, {MB_ERROR, 0}
172 /* Table B-13, dct_dc_size_chrominance, codes 111110xxxx ... 1111111111 */
173 static lookup_t pl_dct_dc_chrom_init_table_2[32] =
174 { {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
175 {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6}, {6, 6},
176 {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {7, 7},
177 {8, 8}, {8, 8}, {8, 8}, {8, 8}, {9, 9}, {9, 9}, {10,10}, {11,10}
181 /* Tables for ac DCT coefficients. There are cut in many parts to save space */
182 /* Table B-14, DCT coefficients table zero,
183 * codes 0100 ... 1xxx (used for first (DC) coefficient)
185 static dct_lookup_t pl_DCT_tab_dc[12] =
187 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
188 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1},
189 {0,1,1}, {0,1,1}, {0,1,1}, {0,1,1}
192 /* Table B-14, DCT coefficients table zero,
193 * codes 0100 ... 1xxx (used for all other coefficients)
195 static dct_lookup_t pl_DCT_tab_ac[12] =
197 {0,2,4}, {2,1,4}, {1,1,3}, {1,1,3},
198 {DCT_EOB,0,2}, {DCT_EOB,0,2}, {DCT_EOB,0,2}, {DCT_EOB,0,2}, /* EOB */
199 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2}
202 /* Table B-14, DCT coefficients table zero,
203 * codes 000001xx ... 00111xxx
205 static dct_lookup_t pl_DCT_tab0[60] =
207 {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6}, {DCT_ESCAPE,0,6},
209 {2,2,7}, {2,2,7}, {9,1,7}, {9,1,7},
210 {0,4,7}, {0,4,7}, {8,1,7}, {8,1,7},
211 {7,1,6}, {7,1,6}, {7,1,6}, {7,1,6},
212 {6,1,6}, {6,1,6}, {6,1,6}, {6,1,6},
213 {1,2,6}, {1,2,6}, {1,2,6}, {1,2,6},
214 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
215 {13,1,8}, {0,6,8}, {12,1,8}, {11,1,8},
216 {3,2,8}, {1,3,8}, {0,5,8}, {10,1,8},
217 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
218 {0,3,5}, {0,3,5}, {0,3,5}, {0,3,5},
219 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
220 {4,1,5}, {4,1,5}, {4,1,5}, {4,1,5},
221 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
222 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5}
225 /* Table B-15, DCT coefficients table one,
226 * codes 000001xx ... 11111111
228 static dct_lookup_t pl_DCT_tab0a[252] =
230 {65,0,6}, {65,0,6}, {65,0,6}, {65,0,6}, /* Escape */
231 {7,1,7}, {7,1,7}, {8,1,7}, {8,1,7},
232 {6,1,7}, {6,1,7}, {2,2,7}, {2,2,7},
233 {0,7,6}, {0,7,6}, {0,7,6}, {0,7,6},
234 {0,6,6}, {0,6,6}, {0,6,6}, {0,6,6},
235 {4,1,6}, {4,1,6}, {4,1,6}, {4,1,6},
236 {5,1,6}, {5,1,6}, {5,1,6}, {5,1,6},
237 {1,5,8}, {11,1,8}, {0,11,8}, {0,10,8},
238 {13,1,8}, {12,1,8}, {3,2,8}, {1,4,8},
239 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
240 {2,1,5}, {2,1,5}, {2,1,5}, {2,1,5},
241 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
242 {1,2,5}, {1,2,5}, {1,2,5}, {1,2,5},
243 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
244 {3,1,5}, {3,1,5}, {3,1,5}, {3,1,5},
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 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
252 {1,1,3}, {1,1,3}, {1,1,3}, {1,1,3},
253 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4}, /* EOB */
254 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
255 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
256 {64,0,4}, {64,0,4}, {64,0,4}, {64,0,4},
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 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
260 {0,3,4}, {0,3,4}, {0,3,4}, {0,3,4},
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 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
276 {0,1,2}, {0,1,2}, {0,1,2}, {0,1,2},
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 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
284 {0,2,3}, {0,2,3}, {0,2,3}, {0,2,3},
285 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
286 {0,4,5}, {0,4,5}, {0,4,5}, {0,4,5},
287 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
288 {0,5,5}, {0,5,5}, {0,5,5}, {0,5,5},
289 {9,1,7}, {9,1,7}, {1,3,7}, {1,3,7},
290 {10,1,7}, {10,1,7}, {0,8,7}, {0,8,7},
291 {0,9,7}, {0,9,7}, {0,12,8}, {0,13,8},
292 {2,3,8}, {4,2,8}, {0,14,8}, {0,15,8}
295 /* Table B-14, DCT coefficients table zero,
296 * codes 0000001000 ... 0000001111
298 static dct_lookup_t pl_DCT_tab1[8] =
300 {16,1,10}, {5,2,10}, {0,7,10}, {2,3,10},
301 {1,4,10}, {15,1,10}, {14,1,10}, {4,2,10}
304 /* Table B-15, DCT coefficients table one,
305 * codes 000000100x ... 000000111x
307 static dct_lookup_t pl_DCT_tab1a[8] =
309 {5,2,9}, {5,2,9}, {14,1,9}, {14,1,9},
310 {2,4,10}, {16,1,10}, {15,1,9}, {15,1,9}
313 /* Table B-14/15, DCT coefficients table zero / one,
314 * codes 000000010000 ... 000000011111
316 static dct_lookup_t pl_DCT_tab2[16] =
318 {0,11,12}, {8,2,12}, {4,3,12}, {0,10,12},
319 {2,4,12}, {7,2,12}, {21,1,12}, {20,1,12},
320 {0,9,12}, {19,1,12}, {18,1,12}, {1,5,12},
321 {3,3,12}, {0,8,12}, {6,2,12}, {17,1,12}
324 /* Table B-14/15, DCT coefficients table zero / one,
325 * codes 0000000010000 ... 0000000011111
327 static dct_lookup_t pl_DCT_tab3[16] =
329 {10,2,13}, {9,2,13}, {5,3,13}, {3,4,13},
330 {2,5,13}, {1,7,13}, {1,6,13}, {0,15,13},
331 {0,14,13}, {0,13,13}, {0,12,13}, {26,1,13},
332 {25,1,13}, {24,1,13}, {23,1,13}, {22,1,13}
335 /* Table B-14/15, DCT coefficients table zero / one,
336 * codes 00000000010000 ... 00000000011111
338 static dct_lookup_t pl_DCT_tab4[16] =
340 {0,31,14}, {0,30,14}, {0,29,14}, {0,28,14},
341 {0,27,14}, {0,26,14}, {0,25,14}, {0,24,14},
342 {0,23,14}, {0,22,14}, {0,21,14}, {0,20,14},
343 {0,19,14}, {0,18,14}, {0,17,14}, {0,16,14}
346 /* Table B-14/15, DCT coefficients table zero / one,
347 * codes 000000000010000 ... 000000000011111
349 static dct_lookup_t pl_DCT_tab5[16] =
351 {0,40,15}, {0,39,15}, {0,38,15}, {0,37,15},
352 {0,36,15}, {0,35,15}, {0,34,15}, {0,33,15},
353 {0,32,15}, {1,14,15}, {1,13,15}, {1,12,15},
354 {1,11,15}, {1,10,15}, {1,9,15}, {1,8,15}
357 /* Table B-14/15, DCT coefficients table zero / one,
358 * codes 0000000000010000 ... 0000000000011111
360 static dct_lookup_t pl_DCT_tab6[16] =
362 {1,18,16}, {1,17,16}, {1,16,16}, {1,15,16},
363 {6,3,16}, {16,2,16}, {15,2,16}, {14,2,16},
364 {13,2,16}, {12,2,16}, {11,2,16}, {31,1,16},
365 {30,1,16}, {29,1,16}, {28,1,16}, {27,1,16}
370 * Initialization of lookup tables
373 /*****************************************************************************
374 * vpar_InitCrop : Initialize the crop table for saturation
375 * (ISO/IEC 13818-2 section 7.4.3)
376 *****************************************************************************/
377 #if defined(MPEG2_COMPLIANT) && !defined(VDEC_DFT)
378 void vpar_InitCrop( vpar_thread_t * p_vpar )
382 p_vpar->pi_crop = p_vpar->pi_crop_buf + 4096;
384 for( i_dummy = -4096; i_dummy < -2048; i_dummy++ )
386 p_vpar->pi_crop[i_dummy] = -2048;
388 for( ; i_dummy < 2047; i_dummy++ )
390 p_vpar->pi_crop[i_dummy] = i_dummy;
392 for( ; i_dummy < 4095; i_dummy++ )
394 p_vpar->pi_crop[i_dummy] = 2047;
399 /*****************************************************************************
400 * vpar_InitMbAddrInc : Initialize the lookup table for mb_addr_inc
401 *****************************************************************************/
403 /* Function for filling up the lookup table for mb_addr_inc */
404 static void __inline__ FillMbAddrIncTable( vpar_thread_t * p_vpar,
405 int i_start, int i_end, int i_step,
406 int * pi_value, int i_length )
409 for( i_pos = i_start ; i_pos < i_end ; i_pos += i_step )
411 for( i_offset = 0 ; i_offset < i_step ; i_offset ++ )
413 p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_value = * pi_value;
414 p_vpar->pl_mb_addr_inc[i_pos + i_offset].i_length = i_length;
420 /* Function that initialize the table using the last one */
421 void vpar_InitMbAddrInc( vpar_thread_t * p_vpar )
426 for( i_dummy = 0 ; i_dummy < 8 ; i_dummy++ )
428 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
429 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
432 p_vpar->pl_mb_addr_inc[8].i_value = MB_ADDRINC_ESCAPE;
433 p_vpar->pl_mb_addr_inc[8].i_length = 11;
435 for( i_dummy = 9 ; i_dummy < 15 ; i_dummy ++ )
437 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
438 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
441 p_vpar->pl_mb_addr_inc[15].i_value = MB_ADDRINC_STUFFING;
442 p_vpar->pl_mb_addr_inc[15].i_length = 11;
444 for( i_dummy = 16; i_dummy < 24; i_dummy++ )
446 p_vpar->pl_mb_addr_inc[i_dummy].i_value = MB_ERROR;
447 p_vpar->pl_mb_addr_inc[i_dummy].i_length = 0;
452 FillMbAddrIncTable( p_vpar, 24, 36, 1, &i_value, 11 );
453 FillMbAddrIncTable( p_vpar, 36, 48, 2, &i_value, 10 );
454 FillMbAddrIncTable( p_vpar, 48, 96, 8, &i_value, 8 );
455 FillMbAddrIncTable( p_vpar, 96, 128, 16, &i_value, 7 );
456 FillMbAddrIncTable( p_vpar, 128, 256, 64, &i_value, 5 );
457 FillMbAddrIncTable( p_vpar, 256, 512, 128, &i_value, 4 );
458 FillMbAddrIncTable( p_vpar, 512, 1024, 256, &i_value, 3 );
459 FillMbAddrIncTable( p_vpar, 1024, 2048, 1024, &i_value, 1 );
462 /*****************************************************************************
463 * vpar_Init*MBType : Initialize lookup table for the Macroblock type
464 *****************************************************************************/
466 /* Fonction for filling up the tables */
467 static void __inline__ FillMBType( vpar_thread_t * p_vpar,
476 for( i_dummy = i_start ; i_dummy < i_end ; i_dummy++ )
478 p_vpar->ppl_mb_type[i_mb_type][i_dummy].i_value = i_value;
479 p_vpar->ppl_mb_type[i_mb_type][i_dummy].i_length = i_length;
483 /* Fonction that fills the table for P MB_Type */
484 void vpar_InitPMBType( vpar_thread_t * p_vpar )
486 FillMBType( p_vpar, 0, 32, 64, MB_MOTION_FORWARD|MB_PATTERN, 1 );
487 FillMBType( p_vpar, 0, 16, 32, MB_PATTERN, 2 );
488 FillMBType( p_vpar, 0, 8, 16, MB_MOTION_FORWARD, 3 );
489 FillMBType( p_vpar, 0, 6, 8, MB_INTRA, 5 );
490 FillMBType( p_vpar, 0, 4, 6, MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN, 5 );
491 FillMBType( p_vpar, 0, 2, 4, MB_QUANT|MB_PATTERN, 5 );
492 p_vpar->ppl_mb_type[0][1].i_value = MB_QUANT|MB_INTRA;
493 p_vpar->ppl_mb_type[0][1].i_length = 6;
494 p_vpar->ppl_mb_type[0][0].i_value = MB_ERROR;
495 p_vpar->ppl_mb_type[0][0].i_length = 0;
498 /* Fonction that fills the table for B MB_Type */
499 void vpar_InitBMBType( vpar_thread_t * p_vpar )
501 FillMBType( p_vpar, 1, 48, 64, MB_MOTION_FORWARD
502 |MB_MOTION_BACKWARD|MB_PATTERN, 2 );
503 FillMBType( p_vpar, 1, 32, 48, MB_MOTION_FORWARD|MB_MOTION_BACKWARD, 2 );
504 FillMBType( p_vpar, 1, 24, 32, MB_MOTION_BACKWARD|MB_PATTERN, 3 );
505 FillMBType( p_vpar, 1, 16, 24, MB_MOTION_BACKWARD, 3 );
506 FillMBType( p_vpar, 1, 12, 16, MB_MOTION_FORWARD|MB_PATTERN, 4 );
507 FillMBType( p_vpar, 1, 8, 12, MB_MOTION_FORWARD, 4 );
508 FillMBType( p_vpar, 1, 6, 8, MB_INTRA, 5 );
509 FillMBType( p_vpar, 1, 4, 6, MB_QUANT|MB_MOTION_FORWARD
510 |MB_MOTION_BACKWARD|MB_PATTERN, 5 );
511 p_vpar->ppl_mb_type[1][3].i_value = MB_QUANT|MB_MOTION_FORWARD|MB_PATTERN;
512 p_vpar->ppl_mb_type[1][3].i_length = 6;
513 p_vpar->ppl_mb_type[1][2].i_value = MB_QUANT|MB_MOTION_BACKWARD|MB_PATTERN;
514 p_vpar->ppl_mb_type[1][2].i_length = 6;
515 p_vpar->ppl_mb_type[1][1].i_value = MB_QUANT|MB_INTRA;
516 p_vpar->ppl_mb_type[1][1].i_length = 6;
517 p_vpar->ppl_mb_type[1][0].i_value =MB_ERROR;
518 p_vpar->ppl_mb_type[1][0].i_length = 0;
522 /*****************************************************************************
523 * vpar_InitDCTTables : Initialize tables giving the length of the dct
524 * coefficient from the vlc code
525 *****************************************************************************/
527 /* First fonction for filling the table */
528 static void __inline__ FillDCTTable( dct_lookup_t * p_tab_dest, dct_lookup_t * p_tab_src,
529 int i_step, int i_nb_elem, int i_offset )
531 int i_dummy, i_dummy2;
533 for( i_dummy=0 ; i_dummy < i_nb_elem ; i_dummy++ )
535 for( i_dummy2=0 ; i_dummy2 < i_step ; i_dummy2++ )
537 p_tab_dest[(i_dummy+i_offset)*i_step+i_dummy2] = p_tab_src[i_dummy];
543 /* Fonction that actually fills the table or create the pointers */
544 void vpar_InitDCTTables( vpar_thread_t * p_vpar )
546 /* Tables are cut in two parts to reduce memory occupation */
547 p_vpar->pppl_dct_dc_size[0][0] = pl_dct_dc_lum_init_table_1;
548 p_vpar->pppl_dct_dc_size[0][1] = pl_dct_dc_lum_init_table_2;
549 p_vpar->pppl_dct_dc_size[1][0] = pl_dct_dc_chrom_init_table_1;
550 p_vpar->pppl_dct_dc_size[1][1] = pl_dct_dc_chrom_init_table_2;
552 /* XXX?? MB_ERROR is replaced by 0 because if we use -1 we
553 * can block in DecodeMPEG2Intra and others */
554 memset( p_vpar->ppl_dct_coef[0], 0, 16 );
555 memset( p_vpar->ppl_dct_coef[1], 0, 16 );
557 /* For table B14 & B15, we have a pointer to tables */
558 /* We fill the table thanks to the fonction defined above */
559 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab0, 256, 60, 4 );
560 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab1, 64, 8, 8 );
561 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab2, 16, 16, 16 );
562 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab3, 8, 16, 16 );
563 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab4, 4, 16, 16 );
564 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab5, 2, 16, 16 );
565 FillDCTTable( p_vpar->ppl_dct_coef[0], pl_DCT_tab6, 1, 16, 16 );
567 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab0a, 256, 60, 4 );
568 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab1a, 64, 8, 8 );
569 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab2, 16, 16, 16 );
570 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab3, 8, 16, 16 );
571 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab4, 4, 16, 16 );
572 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab5, 2, 16, 16 );
573 FillDCTTable( p_vpar->ppl_dct_coef[1], pl_DCT_tab6, 1, 16, 16 );
581 /*****************************************************************************
582 * DecodeMPEG1NonIntra : decode MPEG-1 non-intra blocks
583 *****************************************************************************/
584 static __inline__ void DecodeMPEG1NonIntra( vpar_thread_t * p_vpar,
585 macroblock_t * p_mb, int i_b,
586 int i_chroma_format )
589 if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
591 /* Remove end_of_macroblock (always 1, prevents startcode emulation)
592 * ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
593 RemoveBits( &p_vpar->bit_stream, 1 );
597 /*****************************************************************************
598 * DecodeMPEG1Intra : decode MPEG-1 intra blocks
599 *****************************************************************************/
600 static __inline__ void DecodeMPEG1Intra( vpar_thread_t * p_vpar,
601 macroblock_t * p_mb, int i_b ,
602 int i_chroma_format )
605 if( p_vpar->picture.i_coding_type == D_CODING_TYPE )
607 /* Remove end_of_macroblock (always 1, prevents startcode emulation)
608 * ISO/IEC 11172-2 section 2.4.2.7 and 2.4.3.6 */
609 RemoveBits( &p_vpar->bit_stream, 1 );
613 /*****************************************************************************
614 * DecodeMPEG2NonIntra : decode MPEG-2 non-intra blocks
615 *****************************************************************************/
616 static __inline__ void DecodeMPEG2NonIntra( vpar_thread_t * p_vpar,
617 macroblock_t * p_mb, int i_b,
618 int i_chroma_format )
633 /* Lookup Table for the chromatic component */
634 static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
636 i_cc = pi_cc_index[i_b];
638 /* Determine whether it is luminance or not (chrominance) */
639 i_type = ( i_cc + 1 ) >> 1;
641 /* Give a pointer to the quantization matrices for intra blocks */
642 if( (i_chroma_format == CHROMA_420) || (!i_type) )
644 pi_quant = p_vpar->sequence.nonintra_quant.pi_matrix;
648 pi_quant = p_vpar->sequence.chroma_nonintra_quant.pi_matrix;
651 /* Decoding of the AC coefficients */
655 for( i_parse = 0; !p_vpar->b_die; i_parse++ )
657 i_code = ShowBits( &p_vpar->bit_stream, 16 );
658 if( i_code >= 16384 )
662 i_run = pl_DCT_tab_dc[(i_code>>12)-4].i_run;
663 i_level = pl_DCT_tab_dc[(i_code>>12)-4].i_level;
664 i_length = pl_DCT_tab_dc[(i_code>>12)-4].i_length;
668 i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
669 i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
670 i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
673 else if( i_code >= 1024 )
675 i_run = pl_DCT_tab0[(i_code>>8)-4].i_run;
676 i_length = pl_DCT_tab0[(i_code>>8)-4].i_length;
677 i_level = pl_DCT_tab0[(i_code>>8)-4].i_level;
681 i_run = p_vpar->ppl_dct_coef[0][i_code].i_run;
682 i_length = p_vpar->ppl_dct_coef[0][i_code].i_length;
683 i_level = p_vpar->ppl_dct_coef[0][i_code].i_level;
687 RemoveBits( &p_vpar->bit_stream, i_length );
692 i_run = GetBits( &p_vpar->bit_stream, 6 );
693 i_level = GetBits( &p_vpar->bit_stream, 12 );
694 i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
699 /* The MMX IDCT has a precision problem with non-intra
701 p_mb->ppi_blocks[i_b][0] += 4;
705 p_mb->pf_idct[i_b] = vdec_SparseIDCT;
706 p_mb->pi_sparse_pos[i_b] = i_coef;
710 p_mb->pf_idct[i_b] = vdec_IDCT;
716 b_sign = GetBits( &p_vpar->bit_stream, 1 );
727 i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
728 i_level = ( ((i_level << 1) + 1) * p_vpar->mb.i_quantizer_scale
729 * pi_quant[i_pos] ) >> 5;
730 p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level;
733 intf_ErrMsg("vpar error: DCT coeff (non-intra) is out of bounds\n");
734 p_vpar->picture.b_error = 1;
737 /*****************************************************************************
738 * DecodeMPEG2Intra : decode MPEG-2 intra blocks
739 *****************************************************************************/
740 static __inline__ void DecodeMPEG2Intra( vpar_thread_t * p_vpar,
741 macroblock_t * p_mb, int i_b,
742 int i_chroma_format )
756 boolean_t b_vlc_intra;
760 /* Lookup Table for the chromatic component */
761 static int pi_cc_index[12] = { 0, 0, 0, 0, 1, 2, 1, 2, 1, 2 };
762 i_cc = pi_cc_index[i_b];
764 /* Determine whether it is luminance or not (chrominance) */
765 i_type = ( i_cc + 1 ) >> 1;
767 /* Give a pointer to the quantization matrices for intra blocks */
768 if( (i_chroma_format == CHROMA_420) || (!i_type) )
770 pi_quant = p_vpar->sequence.intra_quant.pi_matrix;
774 pi_quant = p_vpar->sequence.chroma_intra_quant.pi_matrix;
778 /* Decoding of the DC intra coefficient */
779 /* The nb of bits to parse depends on i_type */
780 i_code = ShowBits( &p_vpar->bit_stream, 9 + i_type );
782 /* To reduce memory occupation, there are two lookup tables
783 * See InitDCT above */
784 i_code5 = i_code >> (4+i_type);
786 /* Shall we lookup in the first or in the second table ? */
787 i_select = ( i_code5 == 31 );
788 /* Offset value for looking in the second table */
789 i_offset = 0x1f0 + ( i_type * 0x1f0 );
790 i_pos = ( i_code5 * ( ! i_select ) ) + ( ( i_code - i_offset ) * i_select );
791 i_dct_dc_size = p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_value;
794 if( !i_type/*i_b < 4*/ )
797 i_code = ShowBits(&p_vpar->bit_stream, 5);
800 i_dct_dc_size = pl_dct_dc_lum_init_table_1[i_code].i_value;
801 i_length = pl_dct_dc_lum_init_table_1[i_code].i_length;
802 RemoveBits( &p_vpar->bit_stream, i_length);
806 i_code = ShowBits(&p_vpar->bit_stream, 9) - 0x1f0;
807 i_dct_dc_size = pl_dct_dc_lum_init_table_2[i_code].i_value;
808 i_length = pl_dct_dc_lum_init_table_2[i_code].i_length;
809 RemoveBits( &p_vpar->bit_stream, i_length);
815 i_code = ShowBits(&p_vpar->bit_stream, 5);
819 i_dct_dc_size = pl_dct_dc_chrom_init_table_1[i_code].i_value;
820 i_length = pl_dct_dc_chrom_init_table_1[i_code].i_length;
821 RemoveBits(&p_vpar->bit_stream, i_length);
825 i_code = ShowBits(&p_vpar->bit_stream, 10) - 0x3e0;
826 i_dct_dc_size = pl_dct_dc_chrom_init_table_2[i_code].i_value;
827 i_length = pl_dct_dc_chrom_init_table_2[i_code].i_length;
828 RemoveBits( &p_vpar->bit_stream, i_length);
831 if (i_dct_dc_size==0)
835 i_dct_dc_diff = GetBits( &p_vpar->bit_stream, i_dct_dc_size);
836 if ((i_dct_dc_diff & (1<<(i_dct_dc_size-1)))==0)
837 i_dct_dc_diff-= (1<<i_dct_dc_size) - 1;
840 /* Dump the variable length code */
841 //RemoveBits( &p_vpar->bit_stream,
842 // p_vpar->pppl_dct_dc_size[i_type][i_select][i_pos].i_length );
844 /* Read the actual code with the good length */
845 p_vpar->mb.pi_dc_dct_pred[i_cc] += i_dct_dc_diff;
847 p_mb->ppi_blocks[i_b][0] = ( p_vpar->mb.pi_dc_dct_pred[i_cc] <<
848 ( 3 - p_vpar->picture.i_intra_dc_precision ) );
850 i_nc = ( p_vpar->mb.pi_dc_dct_pred[i_cc] != 0 );
852 /* Decoding of the AC coefficients */
855 b_vlc_intra = p_vpar->picture.b_intra_vlc_format;
856 for( i_parse = 1; !p_vpar->b_die/*i_parse < 64*/; i_parse++ )
858 i_code = ShowBits( &p_vpar->bit_stream, 16 );
859 if( i_code >= 16384 )
863 i_run = pl_DCT_tab0a[(i_code>>8)-4].i_run;
864 i_level = pl_DCT_tab0a[(i_code>>8)-4].i_level;
865 i_length = pl_DCT_tab0a[(i_code>>8)-4].i_length;
866 //fprintf( stderr, "**********> %d, %d, %d *******\n", i_run, i_level, (i_code>>8)-4 );
870 i_run = pl_DCT_tab_ac[(i_code>>12)-4].i_run;
871 i_level = pl_DCT_tab_ac[(i_code>>12)-4].i_level;
872 i_length = pl_DCT_tab_ac[(i_code>>12)-4].i_length;
877 i_run = p_vpar->ppl_dct_coef[b_vlc_intra][i_code].i_run;
878 i_length = p_vpar->ppl_dct_coef[b_vlc_intra][i_code].i_length;
879 i_level = p_vpar->ppl_dct_coef[b_vlc_intra][i_code].i_level;
885 int intra_vlc_format = b_vlc_intra;
888 if (code>=16384 && !intra_vlc_format)
889 tab = pl_DCT_tab_ac[(code>>12)-4];
892 if (intra_vlc_format)
893 tab = pl_DCT_tab0a[(code>>8)-4];
895 tab = pl_DCT_tab0[(code>>8)-4];
899 if (intra_vlc_format)
900 tab = pl_DCT_tab1a[(code>>6)-8];
902 tab = pl_DCT_tab1[(code>>6)-8];
905 tab = pl_DCT_tab2[(code>>4)-16];
907 tab = pl_DCT_tab3[(code>>3)-16];
909 tab = pl_DCT_tab4[(code>>2)-16];
911 tab = pl_DCT_tab5[(code>>1)-16];
913 tab = pl_DCT_tab6[code-16];
916 fprintf( stderr, "invalid Huffman code in Decode_MPEG2_Intra_Block()\n");
919 if( (i_run != tab.i_run) || (i_length != tab.i_length) || (i_level != tab.i_level) )
921 fprintf( stderr, "ET M....... !!!\n" );
930 RemoveBits( &p_vpar->bit_stream, i_length );
935 i_run = GetBits( &p_vpar->bit_stream, 6 );
936 i_level = GetBits( &p_vpar->bit_stream, 12 );
937 /*p_mb->ppi_blocks[i_b][i_parse] = ( b_sign = ( i_level > 2047 ) )
938 ? ( -4096 + i_level )
940 i_level = (b_sign = ( i_level > 2047 )) ? 4096 - i_level
946 p_mb->pf_idct[i_b] = vdec_SparseIDCT;
947 p_mb->pi_sparse_pos[i_b] = i_coef;
951 p_mb->pf_idct[i_b] = vdec_IDCT;
957 b_sign = GetBits( &p_vpar->bit_stream, 1 );
969 i_pos = pi_scan[p_vpar->picture.b_alternate_scan][i_parse];
970 i_level = ( i_level *
971 p_vpar->mb.i_quantizer_scale *
972 pi_quant[i_pos] ) >> 4;
973 p_mb->ppi_blocks[i_b][i_pos] = b_sign ? -i_level : i_level;
976 intf_ErrMsg("vpar error: DCT coeff (intra) is out of bounds\n");
977 p_vpar->picture.b_error = 1;
985 /****************************************************************************
986 * MotionCode : Parse the next motion code
987 ****************************************************************************/
988 static __inline__ int MotionCode( vpar_thread_t * p_vpar )
991 static lookup_t pl_mv_tab0[8] =
992 { {-1,0}, {3,3}, {2,2}, {2,2}, {1,1}, {1,1}, {1,1}, {1,1} };
993 /* Table B-10, motion_code, codes 0000011 ... 000011x */
994 static lookup_t pl_mv_tab1[8] =
995 { {-1,0}, {-1,0}, {-1,0}, {7,6}, {6,6}, {5,6}, {4,5}, {4,5} };
996 /* Table B-10, motion_code, codes 0000001100 ... 000001011x */
997 static lookup_t pl_mv_tab2[12] = {
998 {16,9}, {15,9}, {14,9}, {13,9},
999 {12,9}, {11,9}, {10,8}, {10,8},
1000 {9,8}, {9,8}, {8,8}, {8,8} };
1002 if( GetBits( &p_vpar->bit_stream, 1 ) )
1006 if( (i_code = ShowBits( &p_vpar->bit_stream, 9) ) >= 64 )
1009 RemoveBits( &p_vpar->bit_stream, pl_mv_tab0[i_code].i_length );
1010 return( GetBits( &p_vpar->bit_stream, 1 ) ?
1011 -pl_mv_tab0[i_code].i_value : pl_mv_tab0[i_code].i_value );
1017 RemoveBits( &p_vpar->bit_stream, pl_mv_tab1[i_code].i_length );
1018 return( GetBits( &p_vpar->bit_stream, 1 ) ?
1019 -pl_mv_tab1[i_code].i_value : pl_mv_tab1[i_code].i_value );
1022 if( (i_code -= 12) < 0 )
1024 p_vpar->picture.b_error = 1;
1025 intf_DbgMsg( "vpar debug: Invalid motion_vector code\n" );
1029 RemoveBits( &p_vpar->bit_stream, pl_mv_tab2[i_code].i_length );
1030 return( GetBits( &p_vpar->bit_stream, 1 ) ?
1031 -pl_mv_tab2[i_code].i_value : pl_mv_tab2[i_code].i_value );
1034 /****************************************************************************
1035 * DecodeMotionVector : Decode a motion_vector
1036 ****************************************************************************/
1037 static __inline__ void DecodeMotionVector( int * pi_prediction, int i_r_size,
1038 int i_motion_code, int i_motion_residual, int i_full_pel )
1040 int i_limit, i_vector;
1042 /* ISO/IEC 13818-1 section 7.6.3.1 */
1043 i_limit = 16 << i_r_size;
1044 i_vector = *pi_prediction >> i_full_pel;
1046 if( i_motion_code > 0 )
1048 i_vector += ((i_motion_code-1) << i_r_size) + i_motion_residual + 1;
1049 if( i_vector >= i_limit )
1050 i_vector -= i_limit + i_limit;
1052 else if( i_motion_code < 0 )
1054 i_vector -= ((-i_motion_code-1) << i_r_size) + i_motion_residual + 1;
1055 if( i_vector < -i_limit )
1056 i_vector += i_limit + i_limit;
1058 *pi_prediction = i_vector << i_full_pel;
1061 /****************************************************************************
1062 * MotionVector : Parse the next motion_vector field
1063 ****************************************************************************/
1064 static __inline__ void MotionVector( vpar_thread_t * p_vpar,
1065 macroblock_t * p_mb, int i_r,
1066 int i_s, int i_full_pel, int i_structure )
1068 int i_motion_code, i_motion_residual;
1070 int pi_dm_vector[2];
1072 i_r_size = p_vpar->picture.ppi_f_code[i_s][0] - 1;
1073 i_motion_code = MotionCode( p_vpar );
1074 i_motion_residual = (i_r_size != 0 && i_motion_code != 0) ?
1075 GetBits( &p_vpar->bit_stream, i_r_size) : 0;
1076 DecodeMotionVector( &p_vpar->mb.pppi_pmv[i_r][i_s][0], i_r_size,
1077 i_motion_code, i_motion_residual, i_full_pel );
1078 p_mb->pppi_motion_vectors[i_r][i_s][0] = p_vpar->mb.pppi_pmv[i_r][i_s][0];
1080 if( p_vpar->mb.b_dmv )
1082 if( GetBits(&p_vpar->bit_stream, 1) )
1084 pi_dm_vector[0] = GetBits( &p_vpar->bit_stream, 1 ) ? -1 : 1;
1088 pi_dm_vector[0] = 0;
1092 i_r_size = p_vpar->picture.ppi_f_code[i_s][1]-1;
1093 i_motion_code = MotionCode( p_vpar );
1094 i_motion_residual = (i_r_size != 0 && i_motion_code != 0) ?
1095 GetBits( &p_vpar->bit_stream, i_r_size) : 0;
1098 if( (p_vpar->mb.i_mv_format == MOTION_FIELD)
1099 && (i_structure == FRAME_STRUCTURE) )
1101 p_vpar->mb.pppi_pmv[i_r][i_s][1] >>= 1;
1104 DecodeMotionVector( &p_vpar->mb.pppi_pmv[i_r][i_s][1], i_r_size,
1105 i_motion_code, i_motion_residual, i_full_pel );
1107 if( (p_vpar->mb.i_mv_format == MOTION_FIELD)
1108 && (i_structure == FRAME_STRUCTURE) )
1109 p_vpar->mb.pppi_pmv[i_r][i_s][1] <<= 1;
1111 p_mb->pppi_motion_vectors[i_r][i_s][1] = p_vpar->mb.pppi_pmv[i_r][i_s][1];
1113 if( p_vpar->mb.b_dmv )
1115 if( GetBits(&p_vpar->bit_stream, 1) )
1117 pi_dm_vector[1] = GetBits( &p_vpar->bit_stream, 1 ) ? -1 : 1;
1121 pi_dm_vector[1] = 0;
1124 /* Dual Prime Arithmetic (ISO/IEC 13818-2 section 7.6.3.6). */
1126 #define i_mv_x p_mb->pppi_motion_vectors[0][0][0]
1127 if( i_structure == FRAME_STRUCTURE )
1129 #define i_mv_y (p_mb->pppi_motion_vectors[0][0][1] << 1)
1130 if( p_vpar->picture.b_top_field_first )
1132 /* vector for prediction of top field from bottom field */
1133 p_mb->ppi_dmv[0][0] = ((i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1134 p_mb->ppi_dmv[0][1] = ((i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] - 1;
1136 /* vector for prediction of bottom field from top field */
1137 p_mb->ppi_dmv[1][0] = ((3*i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1138 p_mb->ppi_dmv[1][1] = ((3*i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] + 1;
1142 /* vector for prediction of top field from bottom field */
1143 p_mb->ppi_dmv[0][0] = ((3*i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1144 p_mb->ppi_dmv[0][1] = ((3*i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] - 1;
1146 /* vector for prediction of bottom field from top field */
1147 p_mb->ppi_dmv[1][0] = ((i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1148 p_mb->ppi_dmv[1][1] = ((i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1] + 1;
1154 #define i_mv_y p_mb->pppi_motion_vectors[0][0][1]
1155 /* vector for prediction from field of opposite 'parity' */
1156 p_mb->ppi_dmv[0][0] = ((i_mv_x + (i_mv_x > 0)) >> 1) + pi_dm_vector[0];
1157 p_mb->ppi_dmv[0][1] = ((i_mv_y + (i_mv_y > 0)) >> 1) + pi_dm_vector[1];
1159 /* correct for vertical field shift */
1160 if( p_vpar->picture.i_structure == TOP_FIELD )
1161 p_mb->ppi_dmv[0][1]--;
1163 p_mb->ppi_dmv[0][1]++;
1170 /*****************************************************************************
1171 * DecodeMVMPEG1 : Parse the next MPEG-1 motion vectors
1172 *****************************************************************************/
1173 static __inline__ void DecodeMVMPEG1( vpar_thread_t * p_vpar,
1174 macroblock_t * p_mb, int i_s, int i_structure )
1176 MotionVector( p_vpar, p_mb, 0, i_s,
1177 p_vpar->picture.pb_full_pel_vector[i_s], i_structure );
1180 /*****************************************************************************
1181 * DecodeMVMPEG2 : Parse the next MPEG-2 motion_vectors field
1182 *****************************************************************************/
1183 static __inline__ void DecodeMVMPEG2( vpar_thread_t * p_vpar,
1184 macroblock_t * p_mb, int i_s, int i_structure )
1186 if( p_vpar->mb.i_mv_count == 1 )
1188 if( p_vpar->mb.i_mv_format == MOTION_FIELD && !p_vpar->mb.b_dmv )
1190 p_mb->ppi_field_select[0][i_s] = p_mb->ppi_field_select[1][i_s]
1191 = GetBits( &p_vpar->bit_stream, 1 );
1193 MotionVector( p_vpar, p_mb, 0, i_s, 0, i_structure );
1194 p_vpar->mb.pppi_pmv[1][i_s][0] = p_vpar->mb.pppi_pmv[0][i_s][0];
1195 p_vpar->mb.pppi_pmv[1][i_s][1] = p_vpar->mb.pppi_pmv[0][i_s][1];
1196 p_mb->pppi_motion_vectors[1][i_s][0] = p_vpar->mb.pppi_pmv[0][i_s][0];
1197 p_mb->pppi_motion_vectors[1][i_s][1] = p_vpar->mb.pppi_pmv[0][i_s][1];
1201 p_mb->ppi_field_select[0][i_s] = GetBits( &p_vpar->bit_stream, 1 );
1202 MotionVector( p_vpar, p_mb, 0, i_s, 0, i_structure );
1203 p_mb->ppi_field_select[1][i_s] = GetBits( &p_vpar->bit_stream, 1 );
1204 MotionVector( p_vpar, p_mb, 1, i_s, 0, i_structure );
1210 * Macroblock information structures
1213 /*****************************************************************************
1214 * MacroblockAddressIncrement : Get the macroblock_address_increment field
1215 *****************************************************************************/
1216 static __inline__ int MacroblockAddressIncrement( vpar_thread_t * p_vpar )
1219 /* Index in the lookup table mb_addr_inc */
1220 int i_index = ShowBits( &p_vpar->bit_stream, 11 );
1222 /* Test the presence of the escape character */
1223 while( i_index == 8 )
1225 RemoveBits( &p_vpar->bit_stream, 11 );
1227 i_index = ShowBits( &p_vpar->bit_stream, 11 );
1230 /* Affect the value from the lookup table */
1231 i_addr_inc += p_vpar->pl_mb_addr_inc[i_index].i_value;
1233 /* Dump the good number of bits */
1234 RemoveBits( &p_vpar->bit_stream, p_vpar->pl_mb_addr_inc[i_index].i_length );
1239 /*****************************************************************************
1240 * IMBType : macroblock_type in I pictures
1241 *****************************************************************************/
1242 static __inline__ int IMBType( vpar_thread_t * p_vpar )
1244 /* Take two bits for testing */
1245 int i_type = ShowBits( &p_vpar->bit_stream, 2 );
1247 /* Lookup table for macroblock_type */
1248 static lookup_t pl_mb_Itype[4] = { {MB_ERROR, 0},
1249 {MB_QUANT|MB_INTRA, 2},
1252 /* Dump the good number of bits */
1253 RemoveBits( &p_vpar->bit_stream, pl_mb_Itype[i_type].i_length );
1254 return pl_mb_Itype[i_type].i_value;
1257 /*****************************************************************************
1258 * PMBType : macroblock_type in P pictures
1259 *****************************************************************************/
1260 static __inline__ int PMBType( vpar_thread_t * p_vpar )
1262 /* Testing on 6 bits */
1263 int i_type = ShowBits( &p_vpar->bit_stream, 6 );
1265 /* Dump the good number of bits */
1266 RemoveBits( &p_vpar->bit_stream, p_vpar->ppl_mb_type[0][i_type].i_length );
1267 /* return the value from the lookup table for P type */
1268 return p_vpar->ppl_mb_type[0][i_type].i_value;
1271 /*****************************************************************************
1272 * BMBType : macroblock_type in B pictures
1273 *****************************************************************************/
1274 static __inline__ int BMBType( vpar_thread_t * p_vpar )
1276 /* Testing on 6 bits */
1277 int i_type = ShowBits( &p_vpar->bit_stream, 6 );
1279 /* Dump the good number of bits */
1280 RemoveBits( &p_vpar->bit_stream, p_vpar->ppl_mb_type[1][i_type].i_length );
1282 /* return the value from the lookup table for B type */
1283 return p_vpar->ppl_mb_type[1][i_type].i_value;
1286 /*****************************************************************************
1287 * DMBType : macroblock_type in D pictures
1288 *****************************************************************************/
1289 static __inline__ int DMBType( vpar_thread_t * p_vpar )
1291 return GetBits( &p_vpar->bit_stream, 1 );
1294 /*****************************************************************************
1295 * CodedPattern420 : coded_block_pattern with 4:2:0 chroma
1296 *****************************************************************************/
1297 static __inline__ int CodedPattern420( vpar_thread_t * p_vpar )
1299 /* Take the max 9 bits length vlc code for testing */
1300 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1302 /* Trash the good number of bits read in the lookup table */
1303 RemoveBits( &p_vpar->bit_stream, pl_coded_pattern[i_vlc].i_length );
1305 /* return the value from the vlc table */
1306 return pl_coded_pattern[i_vlc].i_value;
1309 /*****************************************************************************
1310 * CodedPattern422 : coded_block_pattern with 4:2:2 chroma
1311 *****************************************************************************/
1312 static __inline__ int CodedPattern422( vpar_thread_t * p_vpar )
1314 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1316 RemoveBits( &p_vpar->bit_stream, pl_coded_pattern[i_vlc].i_length );
1318 /* Supplementary 2 bits long code for 4:2:2 format */
1319 return pl_coded_pattern[i_vlc].i_value |
1320 (GetBits( &p_vpar->bit_stream, 2 ) << 6);
1323 /*****************************************************************************
1324 * CodedPattern444 : coded_block_pattern with 4:4:4 chroma
1325 *****************************************************************************/
1326 static __inline__ int CodedPattern444( vpar_thread_t * p_vpar )
1328 int i_vlc = ShowBits( &p_vpar->bit_stream, 9 );
1330 RemoveBits( &p_vpar->bit_stream, pl_coded_pattern[i_vlc].i_length );
1332 return pl_coded_pattern[i_vlc].i_value |
1333 (GetBits( &p_vpar->bit_stream, 6 ) << 6);
1336 /*****************************************************************************
1337 * InitMacroblock : Initialize macroblock values
1338 *****************************************************************************/
1339 static __inline__ void InitMacroblock( vpar_thread_t * p_vpar,
1340 macroblock_t * p_mb, int i_coding_type,
1341 int i_chroma_format,
1343 boolean_t b_second_field )
1345 p_mb->i_chroma_nb_blocks = 1 << i_chroma_format;
1346 p_mb->p_picture = p_vpar->picture.p_picture;
1348 if( i_coding_type == B_CODING_TYPE )
1349 p_mb->p_backward = p_vpar->sequence.p_backward;
1351 p_mb->p_backward = NULL;
1352 if( (i_coding_type == P_CODING_TYPE) || (i_coding_type == B_CODING_TYPE) )
1353 p_mb->p_forward = p_vpar->sequence.p_forward;
1355 p_mb->p_forward = NULL;
1357 p_mb->i_l_x = p_vpar->mb.i_l_x;
1358 p_mb->i_c_x = p_vpar->mb.i_c_x;
1359 p_mb->i_motion_l_y = p_vpar->mb.i_l_y;
1360 p_mb->i_motion_c_y = p_vpar->mb.i_c_y;
1361 if( (p_mb->b_motion_field = (i_structure == BOTTOM_FIELD)) )
1363 p_mb->i_motion_l_y--;
1364 p_mb->i_motion_c_y--;
1366 p_mb->i_addb_l_stride = (p_mb->i_l_stride = p_vpar->picture.i_l_stride) - 8;
1367 p_mb->i_addb_c_stride = (p_mb->i_c_stride = p_vpar->picture.i_c_stride) - 8;
1368 p_mb->b_P_second = ( b_second_field && i_coding_type == P_CODING_TYPE );
1371 /*****************************************************************************
1372 * UpdateContext : Update the p_vpar contextual values
1373 *****************************************************************************/
1374 static __inline__ void UpdateContext( vpar_thread_t * p_vpar, int i_structure )
1376 /* Update macroblock real position. */
1377 p_vpar->mb.i_l_x += 16;
1378 p_vpar->mb.i_l_y += (p_vpar->mb.i_l_x / p_vpar->sequence.i_width)
1379 * (2 - (i_structure == FRAME_STRUCTURE)) * 16;
1380 p_vpar->mb.i_l_x %= p_vpar->sequence.i_width;
1382 p_vpar->mb.i_c_x += p_vpar->sequence.i_chroma_mb_width;
1383 p_vpar->mb.i_c_y += (p_vpar->mb.i_c_x / p_vpar->sequence.i_chroma_width)
1384 * (2 - (i_structure == FRAME_STRUCTURE))
1385 * p_vpar->sequence.i_chroma_mb_height;
1386 p_vpar->mb.i_c_x %= p_vpar->sequence.i_chroma_width;
1389 /*****************************************************************************
1390 * SkippedMacroblock : Generate a skipped macroblock with NULL motion vector
1391 *****************************************************************************/
1392 static __inline__ void SkippedMacroblock( vpar_thread_t * p_vpar, int i_mb,
1393 int i_mb_base, int i_coding_type,
1394 int i_chroma_format,
1396 boolean_t b_second_field )
1398 macroblock_t * p_mb;
1400 static f_motion_t pf_motion_skipped[4][4] =
1402 {NULL, NULL, NULL, NULL},
1403 {NULL, vdec_MotionFieldField420, vdec_MotionFieldField420,
1404 vdec_MotionFrameFrame420},
1405 {NULL, vdec_MotionFieldField422, vdec_MotionFieldField422,
1406 vdec_MotionFrameFrame422},
1407 {NULL, vdec_MotionFieldField444, vdec_MotionFieldField444,
1408 vdec_MotionFrameFrame444},
1411 if( i_coding_type == I_CODING_TYPE )
1413 intf_DbgMsg("vpar error: skipped macroblock in I-picture\n");
1414 p_vpar->picture.b_error = 1;
1418 if( (p_mb = vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
1424 p_vpar->picture.pp_mb[i_mb_base + i_mb] = p_mb;
1427 InitMacroblock( p_vpar, p_mb, i_coding_type, i_chroma_format,
1428 i_structure, b_second_field );
1430 /* Motion type is picture structure. */
1431 p_mb->pf_motion = pf_motion_skipped[i_chroma_format]
1433 p_mb->i_mb_type = MB_MOTION_FORWARD;
1434 p_mb->i_coded_block_pattern = 0;
1435 memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
1437 /* Set the field we use for motion compensation */
1438 p_mb->ppi_field_select[0][0] = p_mb->ppi_field_select[0][1]
1439 = ( i_structure == BOTTOM_FIELD );
1441 UpdateContext( p_vpar, i_structure );
1444 /* Decode the macroblock NOW ! */
1445 vdec_DecodeMacroblock( p_vpar->pp_vdec[0], p_mb );
1449 /*****************************************************************************
1450 * MacroblockModes : Get the macroblock_modes structure
1451 *****************************************************************************/
1452 static __inline__ void MacroblockModes( vpar_thread_t * p_vpar,
1453 macroblock_t * p_mb,
1454 int i_chroma_format,
1458 static int ppi_mv_count[2][4] = { {0, 1, 2, 1}, {0, 2, 1, 1} };
1459 static int ppi_mv_format[2][4] = { {0, 1, 1, 1}, {0, 1, 2, 1} };
1461 /* Get macroblock_type. */
1462 switch( i_coding_type )
1465 p_mb->i_mb_type = PMBType( p_vpar );
1468 p_mb->i_mb_type = BMBType( p_vpar );
1471 p_mb->i_mb_type = IMBType( p_vpar );
1474 p_mb->i_mb_type = DMBType( p_vpar );
1477 /* SCALABILITY : warning, we don't know if spatial_temporal_weight_code
1478 * has to be dropped, take care if you use scalable streams. */
1479 /* RemoveBits( &p_vpar->bit_stream, 2 ); */
1481 if( (i_coding_type == P_CODING_TYPE || i_coding_type == B_CODING_TYPE)
1482 && (p_mb->i_mb_type & (MB_MOTION_FORWARD | MB_MOTION_BACKWARD)) )
1484 if( !(i_structure == FRAME_STRUCTURE
1485 && p_vpar->picture.b_frame_pred_frame_dct) )
1487 p_vpar->mb.i_motion_type = GetBits( &p_vpar->bit_stream, 2 );
1491 p_vpar->mb.i_motion_type = MOTION_FRAME;
1495 p_vpar->mb.i_mv_count = ppi_mv_count[i_structure == FRAME_STRUCTURE]
1496 [p_vpar->mb.i_motion_type];
1497 p_vpar->mb.i_mv_format = ppi_mv_format[i_structure == FRAME_STRUCTURE]
1498 [p_vpar->mb.i_motion_type];
1499 p_vpar->mb.b_dmv = p_vpar->mb.i_motion_type == MOTION_DMV;
1502 p_vpar->mb.b_dct_type = 0;
1503 if( (i_structure == FRAME_STRUCTURE) &&
1504 (!p_vpar->picture.b_frame_pred_frame_dct) &&
1505 (p_mb->i_mb_type & (MB_PATTERN|MB_INTRA)) )
1507 if( (p_vpar->mb.b_dct_type = GetBits( &p_vpar->bit_stream, 1 )) )
1509 /* The DCT is coded on fields. Jump one line between each
1511 p_mb->i_addb_l_stride <<= 1;
1512 p_mb->i_addb_l_stride += 8;
1513 /* With CHROMA_420, the DCT is necessarily frame-coded. */
1514 if( i_chroma_format != CHROMA_420 )
1516 p_mb->i_addb_c_stride <<= 1;
1517 p_mb->i_addb_c_stride += 8;
1523 /*****************************************************************************
1524 * ParseMacroblock : Parse the next macroblock
1525 *****************************************************************************/
1526 #define PARSEERROR \
1527 if( p_vpar->picture.b_error ) \
1529 /* Mark this block as skipped (better than green blocks), and \
1530 * go to the next slice. */ \
1531 (*pi_mb_address)--; \
1532 vpar_DestroyMacroblock( &p_vpar->vfifo, p_mb ); \
1537 #define PARSEBLOCKS( MPEG1FUNC, MPEG2FUNC ) \
1539 i_mask = 1 << (3 + (1 << i_chroma_format)); \
1542 p_data1 = p_mb->p_picture->p_y \
1543 + p_mb->i_l_x + p_vpar->mb.i_l_y*(p_vpar->sequence.i_width); \
1545 for( i_b = 0 ; i_b < 4 ; i_b++, i_mask >>= 1 ) \
1547 if( p_mb->i_coded_block_pattern & i_mask ) \
1549 memset( p_mb->ppi_blocks[i_b], 0, 64*sizeof(dctelem_t) ); \
1551 MPEG2FUNC( p_vpar, p_mb, i_b, i_chroma_format ); \
1553 MPEG1FUNC( p_vpar, p_mb, i_b, i_chroma_format ); \
1555 /* Calculate block coordinates. */ \
1556 p_mb->p_data[i_b] = p_data1 \
1557 + pi_y[p_vpar->mb.b_dct_type][i_b] \
1558 * p_vpar->sequence.i_width \
1566 p_data1 = p_mb->p_picture->p_u \
1568 + p_vpar->mb.i_c_y \
1569 * (p_vpar->sequence.i_chroma_width); \
1570 p_data2 = p_mb->p_picture->p_v \
1572 + p_vpar->mb.i_c_y \
1573 * (p_vpar->sequence.i_chroma_width); \
1575 for( i_b = 4; i_b < 4 + (1 << i_chroma_format); \
1576 i_b++, i_mask >>= 1 ) \
1578 yuv_data_t * pp_data[2] = {p_data1, p_data2}; \
1580 if( p_mb->i_coded_block_pattern & i_mask ) \
1582 memset( p_mb->ppi_blocks[i_b], 0, 64*sizeof(dctelem_t) ); \
1584 MPEG2FUNC( p_vpar, p_mb, i_b, i_chroma_format ); \
1586 MPEG1FUNC( p_vpar, p_mb, i_b, i_chroma_format ); \
1588 /* Calculate block coordinates. */ \
1589 p_mb->p_data[i_b] = pp_data[i_b & 1] \
1590 + pi_y[p_vpar->mb.b_dct_type][i_b] \
1591 * p_vpar->sequence.i_chroma_width \
1599 static __inline__ void ParseMacroblock(
1600 vpar_thread_t * p_vpar,
1601 int * pi_mb_address, /* previous address to be
1602 * used for mb_addr_incr */
1603 int i_mb_previous, /* actual previous mb */
1604 int i_mb_base, /* non-zero if field structure */
1605 /* The following parameters are explicit in
1606 * optimized routines : */
1607 boolean_t b_mpeg2, /* you know what ? */
1608 int i_coding_type, /* I, P, B or D */
1609 int i_chroma_format, /* 4:2:0, 4:2:2 or 4:4:4 */
1610 int i_structure, /* T(OP), B(OTTOM) or F(RAME) */
1611 boolean_t b_second_field ) /* second field of a
1614 static f_motion_t pppf_motion[4][2][4] =
1616 { {NULL, NULL, NULL, NULL},
1617 {NULL, NULL, NULL, NULL}
1619 { {NULL, vdec_MotionFieldField420, vdec_MotionField16x8420,
1620 vdec_MotionFieldDMV420},
1621 {NULL, vdec_MotionFrameField420, vdec_MotionFrameFrame420,
1622 vdec_MotionFrameDMV420}
1624 { {NULL, vdec_MotionFieldField422, vdec_MotionField16x8422,
1625 vdec_MotionFieldDMV422},
1626 {NULL, vdec_MotionFrameField422, vdec_MotionFrameFrame422,
1627 vdec_MotionFrameDMV422}
1629 { {NULL, vdec_MotionFieldField444, vdec_MotionField16x8444,
1630 vdec_MotionFieldDMV444},
1631 {NULL, vdec_MotionFrameField444, vdec_MotionFrameFrame444,
1632 vdec_MotionFrameDMV444}
1635 static int pi_x[12] = {0,8,0,8,0,0,0,0,8,8,8,8};
1636 static int pi_y[2][12] = { {0,0,8,8,0,0,8,8,0,0,8,8},
1637 {0,0,1,1,0,0,1,1,0,0,1,1} };
1638 int i_mb, i_b, i_mask;
1640 macroblock_t * p_mb;
1641 yuv_data_t * p_data1;
1642 yuv_data_t * p_data2;
1646 i_inc = MacroblockAddressIncrement( p_vpar );
1647 *pi_mb_address += i_inc;
1651 intf_ErrMsg( "vpar error: bad address increment (%d)\n", i_inc );
1652 p_vpar->picture.b_error = 1;
1656 if( *pi_mb_address - i_mb_previous - 1 )
1658 /* Skipped macroblock (ISO/IEC 13818-2 7.6.6). */
1660 /* Reset DC predictors (7.2.1). */
1661 p_vpar->mb.pi_dc_dct_pred[0] = p_vpar->mb.pi_dc_dct_pred[1]
1662 = p_vpar->mb.pi_dc_dct_pred[2]
1663 = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
1665 if( i_coding_type == P_CODING_TYPE )
1667 /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
1668 memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
1671 for( i_mb = i_mb_previous + 1; i_mb < *pi_mb_address; i_mb++ )
1673 SkippedMacroblock( p_vpar, i_mb, i_mb_base, i_coding_type,
1674 i_chroma_format, i_structure, b_second_field );
1678 /* Get a macroblock structure. */
1679 if( (p_mb = vpar_NewMacroblock( &p_vpar->vfifo )) == NULL )
1685 p_vpar->picture.pp_mb[i_mb_base + *pi_mb_address] = p_mb;
1688 InitMacroblock( p_vpar, p_mb, i_coding_type, i_chroma_format,
1689 i_structure, b_second_field );
1691 /* Parse off macroblock_modes structure. */
1692 MacroblockModes( p_vpar, p_mb, i_chroma_format, i_coding_type,
1695 if( p_mb->i_mb_type & MB_QUANT )
1697 LoadQuantizerScale( p_vpar );
1700 if( (i_coding_type == P_CODING_TYPE || i_coding_type == B_CODING_TYPE)
1701 && (p_mb->i_mb_type & MB_MOTION_FORWARD) )
1704 DecodeMVMPEG2( p_vpar, p_mb, 0, i_structure );
1706 DecodeMVMPEG1( p_vpar, p_mb, 0, i_structure );
1710 if( (i_coding_type == B_CODING_TYPE)
1711 && (p_mb->i_mb_type & MB_MOTION_BACKWARD) )
1714 DecodeMVMPEG2( p_vpar, p_mb, 1, i_structure );
1716 DecodeMVMPEG1( p_vpar, p_mb, 1, i_structure );
1720 if( i_coding_type == P_CODING_TYPE
1721 && !(p_mb->i_mb_type & (MB_MOTION_FORWARD|MB_INTRA)) )
1723 /* Special No-MC macroblock in P pictures (7.6.3.5). */
1724 p_mb->i_mb_type |= MB_MOTION_FORWARD;
1725 memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
1726 memset( p_mb->pppi_motion_vectors, 0, 8*sizeof(int) );
1727 p_vpar->mb.i_motion_type = 1 + (i_structure == FRAME_STRUCTURE);
1728 p_mb->ppi_field_select[0][0] = (i_structure == BOTTOM_FIELD);
1731 if( (i_coding_type != I_CODING_TYPE) && !(p_mb->i_mb_type & MB_INTRA) )
1733 /* Reset DC predictors (7.2.1). */
1734 p_vpar->mb.pi_dc_dct_pred[0] = p_vpar->mb.pi_dc_dct_pred[1]
1735 = p_vpar->mb.pi_dc_dct_pred[2]
1736 = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
1738 /* Motion function pointer. */
1739 p_mb->pf_motion = pppf_motion[i_chroma_format]
1740 [i_structure == FRAME_STRUCTURE]
1741 [p_vpar->mb.i_motion_type];
1743 if( p_mb->i_mb_type & MB_PATTERN )
1745 switch( i_chroma_format )
1748 p_mb->i_coded_block_pattern = CodedPattern420( p_vpar );
1751 p_mb->i_coded_block_pattern = CodedPattern422( p_vpar );
1754 p_mb->i_coded_block_pattern = CodedPattern444( p_vpar );
1759 p_mb->i_coded_block_pattern = 0;
1763 * Effectively decode blocks.
1765 PARSEBLOCKS( DecodeMPEG1NonIntra, DecodeMPEG2NonIntra )
1769 if( !p_vpar->picture.b_concealment_mv )
1771 /* Reset MV predictors. */
1772 memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
1777 DecodeMVMPEG2( p_vpar, p_mb, 0, i_structure );
1779 DecodeMVMPEG1( p_vpar, p_mb, 0, i_structure );
1780 RemoveBits( &p_vpar->bit_stream, 1 );
1783 if( p_mb->i_mb_type & MB_PATTERN )
1785 switch( i_chroma_format )
1788 p_mb->i_coded_block_pattern = CodedPattern420( p_vpar );
1791 p_mb->i_coded_block_pattern = CodedPattern422( p_vpar );
1794 p_mb->i_coded_block_pattern = CodedPattern444( p_vpar );
1799 p_mb->i_coded_block_pattern =
1800 (1 << (4 + (1 << i_chroma_format))) - 1;
1804 * Effectively decode blocks.
1806 PARSEBLOCKS( DecodeMPEG1Intra, DecodeMPEG2Intra )
1809 if( !p_vpar->picture.b_error )
1811 UpdateContext( p_vpar, i_structure );
1813 /* Decode the macroblock NOW ! */
1814 vdec_DecodeMacroblock( p_vpar->pp_vdec[0], p_mb );
1819 /* Mark this block as skipped (better than green blocks), and go
1820 * to the next slice. */
1822 vpar_DestroyMacroblock( &p_vpar->vfifo, p_mb );
1827 * Picture data parsing management
1830 /*****************************************************************************
1831 * SliceHeader : Parse the next slice structure
1832 *****************************************************************************/
1833 static __inline__ void SliceHeader( vpar_thread_t * p_vpar,
1834 int * pi_mb_address, int i_mb_base,
1835 u32 i_vert_code, boolean_t b_high,
1836 boolean_t b_dp_scalable,
1837 boolean_t b_mpeg2, int i_coding_type,
1838 int i_chroma_format, int i_structure,
1839 boolean_t b_second_field )
1841 int i_mb_address_save = *pi_mb_address;
1843 p_vpar->picture.b_error = 0;
1847 /* Picture with more than 2800 lines. */
1848 i_vert_code += GetBits( &p_vpar->bit_stream, 3 ) << 7;
1852 /* DATA_PARTITIONING scalability. */
1853 RemoveBits( &p_vpar->bit_stream, 7 ); /* priority_breakpoint */
1856 LoadQuantizerScale( p_vpar );
1858 if( GetBits( &p_vpar->bit_stream, 1 ) )
1860 /* intra_slice, slice_id */
1861 RemoveBits( &p_vpar->bit_stream, 8 );
1862 /* extra_information_slice */
1863 while( GetBits( &p_vpar->bit_stream, 1 ) )
1865 RemoveBits( &p_vpar->bit_stream, 8 );
1868 *pi_mb_address = (i_vert_code - 1)*p_vpar->sequence.i_mb_width;
1870 if( *pi_mb_address < i_mb_address_save )
1872 intf_ErrMsg( "vpar error: slices do not follow, maybe a PES has been trashed\n" );
1873 p_vpar->picture.b_error = 1;
1877 /* Reset DC coefficients predictors (ISO/IEC 13818-2 7.2.1). */
1878 p_vpar->mb.pi_dc_dct_pred[0] = p_vpar->mb.pi_dc_dct_pred[1]
1879 = p_vpar->mb.pi_dc_dct_pred[2]
1880 = 1 << (7 + p_vpar->picture.i_intra_dc_precision);
1882 /* Reset motion vector predictors (ISO/IEC 13818-2 7.6.3.4). */
1883 memset( p_vpar->mb.pppi_pmv, 0, 8*sizeof(int) );
1887 if( i_mb_address_save >= p_vpar->sequence.i_mb_size )
1889 p_vpar->picture.b_error = 1;
1892 ParseMacroblock( p_vpar, pi_mb_address, i_mb_address_save,
1893 i_mb_base, b_mpeg2, i_coding_type,
1894 i_chroma_format, i_structure,
1896 i_mb_address_save = *pi_mb_address;
1897 if( p_vpar->picture.b_error )
1902 while( ShowBits( &p_vpar->bit_stream, 23 ) && !p_vpar->b_die );
1903 NextStartCode( p_vpar );
1906 /*****************************************************************************
1907 * PictureData : Parse off all macroblocks (ISO/IEC 13818-2 6.2.3.7)
1908 *****************************************************************************/
1909 static __inline__ void PictureData( vpar_thread_t * p_vpar, int i_mb_base,
1910 boolean_t b_high, boolean_t b_dp_scalable,
1911 boolean_t b_mpeg2, int i_coding_type,
1912 int i_chroma_format, int i_structure,
1913 boolean_t b_second_field )
1915 int i_mb_address = 0;
1918 NextStartCode( p_vpar );
1919 while( ((i_coding_type != I_CODING_TYPE && i_coding_type != D_CODING_TYPE)
1920 || !p_vpar->picture.b_error)
1921 && i_mb_address+i_mb_base < p_vpar->sequence.i_mb_size
1924 if( ((i_dummy = ShowBits( &p_vpar->bit_stream, 32 ))
1925 < SLICE_START_CODE_MIN) ||
1926 (i_dummy > SLICE_START_CODE_MAX) )
1928 intf_DbgMsg("vpar debug: premature end of picture\n");
1929 p_vpar->picture.b_error = 1;
1932 RemoveBits32( &p_vpar->bit_stream );
1934 /* Decode slice data. */
1935 SliceHeader( p_vpar, &i_mb_address, i_mb_base, i_dummy & 255,
1936 b_high, b_dp_scalable, b_mpeg2, i_coding_type,
1937 i_chroma_format, i_structure, b_second_field );
1940 /* Try to recover from error. If we missed less than half the
1941 * number of macroblocks of the picture, mark the missed ones
1943 if( (i_coding_type == P_CODING_TYPE || i_coding_type == B_CODING_TYPE)
1944 && p_vpar->picture.b_error &&
1945 ( (i_mb_address-i_mb_base) > (p_vpar->sequence.i_mb_size >> 1)
1946 || (i_structure != FRAME_STRUCTURE
1947 && (i_mb_address-i_mb_base) > (p_vpar->sequence.i_mb_size >> 2) ) ) )
1951 p_vpar->picture.b_error = 0;
1952 for( i_mb = i_mb_address + 1;
1953 i_mb < (p_vpar->sequence.i_mb_size
1954 << (i_structure != FRAME_STRUCTURE));
1957 SkippedMacroblock( p_vpar, i_mb, i_mb_base, i_coding_type,
1958 i_chroma_format, i_structure, b_second_field );
1963 /*****************************************************************************
1964 * vpar_PictureDataVWXYZ : Parse the next macroblock ; specific functions
1965 *****************************************************************************
1968 * X = chroma format ?
1970 * Z = second field ?
1971 *****************************************************************************/
1972 void vpar_PictureDataGENERIC( vpar_thread_t * p_vpar, int i_mb_base )
1974 PictureData( p_vpar, i_mb_base, (p_vpar->sequence.i_height > 2800),
1975 (p_vpar->sequence.i_scalable_mode == SC_DP),
1976 p_vpar->sequence.b_mpeg2, p_vpar->picture.i_coding_type,
1977 p_vpar->sequence.i_chroma_format,
1978 p_vpar->picture.i_structure,
1979 (p_vpar->picture.i_structure !=
1980 p_vpar->picture.i_current_structure) );
1983 #if (VPAR_OPTIM_LEVEL > 0)
1984 /* Optimizations for frame pictures */
1985 void vpar_PictureData2I420F0( vpar_thread_t * p_vpar, int i_mb_base )
1987 PictureData( p_vpar, 0, 0, 0, 1, I_CODING_TYPE, CHROMA_420,
1988 FRAME_STRUCTURE, 0 );
1991 void vpar_PictureData2P420F0( vpar_thread_t * p_vpar, int i_mb_base )
1993 PictureData( p_vpar, 0, 0, 0, 1, P_CODING_TYPE, CHROMA_420,
1994 FRAME_STRUCTURE, 0 );
1997 void vpar_PictureData2B420F0( vpar_thread_t * p_vpar, int i_mb_base )
1999 PictureData( p_vpar, 0, 0, 0, 1, B_CODING_TYPE, CHROMA_420,
2000 FRAME_STRUCTURE, 0 );
2004 #if (VPAR_OPTIM_LEVEL > 1)
2005 /* Optimizations for field pictures */
2006 void vpar_PictureData2I420TZ( vpar_thread_t * p_vpar, int i_mb_base )
2008 PictureData( p_vpar, i_mb_base, 0, 0, 1, I_CODING_TYPE, CHROMA_420,
2009 TOP_FIELD, (p_vpar->picture.i_structure !=
2010 p_vpar->picture.i_current_structure) );
2013 void vpar_PictureData2P420TZ( vpar_thread_t * p_vpar, int i_mb_base )
2015 PictureData( p_vpar, i_mb_base, 0, 0, 1, P_CODING_TYPE, CHROMA_420,
2016 TOP_FIELD, (p_vpar->picture.i_structure !=
2017 p_vpar->picture.i_current_structure) );
2020 void vpar_PictureData2B420TZ( vpar_thread_t * p_vpar, int i_mb_base )
2022 PictureData( p_vpar, i_mb_base, 0, 0, 1, B_CODING_TYPE, CHROMA_420,
2023 TOP_FIELD, (p_vpar->picture.i_structure !=
2024 p_vpar->picture.i_current_structure) );
2027 void vpar_PictureData2I420BZ( vpar_thread_t * p_vpar, int i_mb_base )
2029 PictureData( p_vpar, i_mb_base, 0, 0, 1, I_CODING_TYPE, CHROMA_420,
2030 BOTTOM_FIELD, (p_vpar->picture.i_structure !=
2031 p_vpar->picture.i_current_structure) );
2034 void vpar_PictureData2P420BZ( vpar_thread_t * p_vpar, int i_mb_base )
2036 PictureData( p_vpar, i_mb_base, 0, 0, 1, P_CODING_TYPE, CHROMA_420,
2037 BOTTOM_FIELD, (p_vpar->picture.i_structure !=
2038 p_vpar->picture.i_current_structure) );
2041 void vpar_PictureData2B420BZ( vpar_thread_t * p_vpar, int i_mb_base )
2043 PictureData( p_vpar, i_mb_base, 0, 0, 1, B_CODING_TYPE, CHROMA_420,
2044 BOTTOM_FIELD, (p_vpar->picture.i_structure !=
2045 p_vpar->picture.i_current_structure) );