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[/] [mpeg2fpga/] [trunk/] [tools/] [mpeg2dec/] [global.h] - Blame information for rev 2

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/* global.h, global variables                                               */
2 
 
3 
/* Copyright (C) 1996, MPEG Software Simulation Group. All Rights Reserved. */
4 
 
5 
/*
6 
 * Disclaimer of Warranty
7 
 *
8 
 * These software programs are available to the user without any license fee or
9 
 * royalty on an "as is" basis.  The MPEG Software Simulation Group disclaims
10 
 * any and all warranties, whether express, implied, or statuary, including any
11 
 * implied warranties or merchantability or of fitness for a particular
12 
 * purpose.  In no event shall the copyright-holder be liable for any
13 
 * incidental, punitive, or consequential damages of any kind whatsoever
14 
 * arising from the use of these programs.
15 
 *
16 
 * This disclaimer of warranty extends to the user of these programs and user's
17 
 * customers, employees, agents, transferees, successors, and assigns.
18 
 *
19 
 * The MPEG Software Simulation Group does not represent or warrant that the
20 
 * programs furnished hereunder are free of infringement of any third-party
21 
 * patents.
22 
 *
23 
 * Commercial implementations of MPEG-1 and MPEG-2 video, including shareware,
24 
 * are subject to royalty fees to patent holders.  Many of these patents are
25 
 * general enough such that they are unavoidable regardless of implementation
26 
 * design.
27 
 *
28 
 */
29 
 
30 
#include "mpeg2dec.h"
31 
 
32 
/* choose between declaration (GLOBAL undefined)
33 
 * and definition (GLOBAL defined)
34 
 * GLOBAL is defined in exactly one file mpeg2dec.c)
35 
 */
36 
 
37 
#ifndef GLOBAL
38 
#define EXTERN extern
39 
#else
40 
#define EXTERN
41 
#endif
42 
 
43 
/* prototypes of global functions */
44 
/* readpic.c */
45 
void Substitute_Frame_Buffer _ANSI_ARGS_ ((int bitstream_framenum,
46 
  int sequence_framenum));
47 
 
48 
/* Get_Bits.c */
49 
void Initialize_Buffer _ANSI_ARGS_((void));
50 
void Fill_Buffer _ANSI_ARGS_((void));
51 
unsigned int Show_Bits _ANSI_ARGS_((int n));
52 
unsigned int Get_Bits1 _ANSI_ARGS_((void));
53 
void Flush_Buffer _ANSI_ARGS_((int n));
54 
unsigned int Get_Bits _ANSI_ARGS_((int n));
55 
int Get_Byte _ANSI_ARGS_((void));
56 
int Get_Word _ANSI_ARGS_((void));
57 
 
58 
/* systems.c */
59 
void Next_Packet _ANSI_ARGS_((void));
60 
int Get_Long _ANSI_ARGS_((void));
61 
void Flush_Buffer32 _ANSI_ARGS_((void));
62 
unsigned int Get_Bits32 _ANSI_ARGS_((void));
63 
 
64 
 
65 
/* getblk.c */
66 
void Decode_MPEG1_Intra_Block _ANSI_ARGS_((int comp, int dc_dct_pred[]));
67 
void Decode_MPEG1_Non_Intra_Block _ANSI_ARGS_((int comp));
68 
void Decode_MPEG2_Intra_Block _ANSI_ARGS_((int comp, int dc_dct_pred[]));
69 
void Decode_MPEG2_Non_Intra_Block _ANSI_ARGS_((int comp));
70 
 
71 
/* gethdr.c */
72 
int Get_Hdr _ANSI_ARGS_((void));
73 
void next_start_code _ANSI_ARGS_((void));
74 
int slice_header _ANSI_ARGS_((void));
75 
void marker_bit _ANSI_ARGS_((char *text));
76 
 
77 
/* getpic.c */
78 
void Decode_Picture _ANSI_ARGS_((int bitstream_framenum,
79 
  int sequence_framenum));
80 
void Output_Last_Frame_of_Sequence _ANSI_ARGS_((int framenum));
81 
 
82 
/* getvlc.c */
83 
int Get_macroblock_type _ANSI_ARGS_((void));
84 
int Get_motion_code _ANSI_ARGS_((void));
85 
int Get_dmvector _ANSI_ARGS_((void));
86 
int Get_coded_block_pattern _ANSI_ARGS_((void));
87 
int Get_macroblock_address_increment _ANSI_ARGS_((void));
88 
int Get_Luma_DC_dct_diff _ANSI_ARGS_((void));
89 
int Get_Chroma_DC_dct_diff _ANSI_ARGS_((void));
90 
 
91 
/* idct.c */
92 
void Fast_IDCT _ANSI_ARGS_((short *block));
93 
void Initialize_Fast_IDCT _ANSI_ARGS_((void));
94 
 
95 
/* Reference_IDCT.c */
96 
void Initialize_Reference_IDCT _ANSI_ARGS_((void));
97 
#ifdef HAVE_MMX
98 
void Reference_IDCT _ANSI_ARGS_((short *block, int i));
99 
#else
100 
void Reference_IDCT _ANSI_ARGS_((short *block));
101 
#endif
102 
 
103 
/* motion.c */
104 
void motion_vectors _ANSI_ARGS_((int PMV[2][2][2], int dmvector[2],
105 
  int motion_vertical_field_select[2][2], int s, int motion_vector_count,
106 
  int mv_format, int h_r_size, int v_r_size, int dmv, int mvscale));
107 
void motion_vector _ANSI_ARGS_((int *PMV, int *dmvector,
108 
  int h_r_size, int v_r_size, int dmv, int mvscale, int full_pel_vector));
109 
void Dual_Prime_Arithmetic _ANSI_ARGS_((int DMV[][2], int *dmvector, int mvx, int mvy));
110 
 
111 
/* mpeg2dec.c */
112 
void Error _ANSI_ARGS_((char *text));
113 
void Warning _ANSI_ARGS_((char *text));
114 
void Print_Bits _ANSI_ARGS_((int code, int bits, int len));
115 
 
116 
/* recon.c */
117 
void form_predictions _ANSI_ARGS_((int bx, int by, int macroblock_type,
118 
  int motion_type, int PMV[2][2][2], int motion_vertical_field_select[2][2],
119 
  int dmvector[2], int stwtype));
120 
 
121 
/* spatscal.c */
122 
void Spatial_Prediction _ANSI_ARGS_((void));
123 
 
124 
/* store.c */
125 
void Write_Frame _ANSI_ARGS_((unsigned char *src[], int frame));
126 
 
127 
#ifdef DISPLAY
128 
/* display.c */
129 
void Initialize_Display_Process _ANSI_ARGS_((char *name));
130 
void Terminate_Display_Process _ANSI_ARGS_((void));
131 
void Display_Second_Field _ANSI_ARGS_((void));
132 
void dither _ANSI_ARGS_((unsigned char *src[]));
133 
void Initialize_Dither_Matrix _ANSI_ARGS_((void));
134 
#endif
135 
 
136 
/* global variables */
137 
 
138 
EXTERN char Version[]
139 
#ifdef GLOBAL
140 
  ="mpeg2decode V1.2a, 96/07/19"
141 
#endif
142 
;
143 
 
144 
EXTERN char Author[]
145 
#ifdef GLOBAL
146 
  ="(C) 1996, MPEG Software Simulation Group"
147 
#endif
148 
;
149 
 
150 
 
151 
/* zig-zag and alternate scan patterns */
152 
EXTERN unsigned char scan[2][64]
153 
#ifdef GLOBAL
154 
=
155 
{
156 
#ifdef HAVE_MMX
157 
  { /* MMX Zig-Zag scan pattern (transposed)  */
158 
         0, 8, 1, 2, 9,16,24,17,10, 3, 4,11,18,25,32,40,
159 
        33,26,19,12, 5, 6,13,20,27,34,41,48,56,49,42,35,
160 
        28,21,14, 7,15,22,29,36,43,50,57,58,51,44,37,30,
161 
        23,31,38,45,52,59,60,53,46,39,47,54,61,62,55,63
162 
  },
163 
  { /* Alternate scan pattern (transposed)*/
164 
 
165 
         0, 1, 2, 3, 8, 9,16,17,10,11, 4, 5, 6, 7,15,14,
166 
        13,12,19,18,24,25,32,33,26,27,20,21,22,23,28,29,
167 
        30,31,34,35,40,41,48,49,42,43,36,37,38,39,44,45,
168 
        46,47,50,51,56,57,58,59,52,53,54,55,60,61,62,63,
169 
  }
170 
#else
171 
  { /* Zig-Zag scan pattern  */
172 
    0,1,8,16,9,2,3,10,17,24,32,25,18,11,4,5,
173 
    12,19,26,33,40,48,41,34,27,20,13,6,7,14,21,28,
174 
    35,42,49,56,57,50,43,36,29,22,15,23,30,37,44,51,
175 
    58,59,52,45,38,31,39,46,53,60,61,54,47,55,62,63
176 
  },
177 
  { /* Alternate scan pattern */
178 
    0,8,16,24,1,9,2,10,17,25,32,40,48,56,57,49,
179 
    41,33,26,18,3,11,4,12,19,27,34,42,50,58,35,43,
180 
    51,59,20,28,5,13,6,14,21,29,36,44,52,60,37,45,
181 
    53,61,22,30,7,15,23,31,38,46,54,62,39,47,55,63
182 
  }
183 
#endif
184 
}
185 
#endif
186 
;
187 
 
188 
/* default intra quantization matrix */
189 
EXTERN unsigned char default_intra_quantizer_matrix[64]
190 
#ifdef GLOBAL
191 
=
192 
{
193 
  8, 16, 19, 22, 26, 27, 29, 34,
194 
  16, 16, 22, 24, 27, 29, 34, 37,
195 
  19, 22, 26, 27, 29, 34, 34, 38,
196 
  22, 22, 26, 27, 29, 34, 37, 40,
197 
  22, 26, 27, 29, 32, 35, 40, 48,
198 
  26, 27, 29, 32, 35, 40, 48, 58,
199 
  26, 27, 29, 34, 38, 46, 56, 69,
200 
  27, 29, 35, 38, 46, 56, 69, 83
201 
}
202 
#endif
203 
;
204 
 
205 
/* non-linear quantization coefficient table */
206 
EXTERN unsigned char Non_Linear_quantizer_scale[32]
207 
#ifdef GLOBAL
208 
=
209 
{
210 
   0, 1, 2, 3, 4, 5, 6, 7,
211 
   8,10,12,14,16,18,20,22,
212 
  24,28,32,36,40,44,48,52,
213 
  56,64,72,80,88,96,104,112
214 
}
215 
#endif
216 
;
217 
 
218 
/* color space conversion coefficients
219 
 * for YCbCr -> RGB mapping
220 
 *
221 
 * entries are {crv,cbu,cgu,cgv}
222 
 *
223 
 * crv=(255/224)*65536*(1-cr)/0.5
224 
 * cbu=(255/224)*65536*(1-cb)/0.5
225 
 * cgu=(255/224)*65536*(cb/cg)*(1-cb)/0.5
226 
 * cgv=(255/224)*65536*(cr/cg)*(1-cr)/0.5
227 
 *
228 
 * where Y=cr*R+cg*G+cb*B (cr+cg+cb=1)
229 
 */
230 
 
231 
/* ISO/IEC 13818-2 section 6.3.6 sequence_display_extension() */
232 
 
233 
EXTERN int Inverse_Table_6_9[8][4]
234 
#ifdef GLOBAL
235 
=
236 
{
237 
  {117504, 138453, 13954, 34903}, /* no sequence_display_extension */
238 
  {117504, 138453, 13954, 34903}, /* ITU-R Rec. 709 (1990) */
239 
  {104597, 132201, 25675, 53279}, /* unspecified */
240 
  {104597, 132201, 25675, 53279}, /* reserved */
241 
  {104448, 132798, 24759, 53109}, /* FCC */
242 
  {104597, 132201, 25675, 53279}, /* ITU-R Rec. 624-4 System B, G */
243 
  {104597, 132201, 25675, 53279}, /* SMPTE 170M */
244 
  {117579, 136230, 16907, 35559}  /* SMPTE 240M (1987) */
245 
}
246 
#endif
247 
;
248 
 
249 
 
250 
 
251 
 
252 
 
253 
/* output types (Output_Type) */
254 
#define T_YUV   0
255 
#define T_SIF   1
256 
#define T_TGA   2
257 
#define T_PPM   3
258 
#define T_X11   4
259 
#define T_X11HIQ 5
260 
 
261 
/* decoder operation control variables */
262 
EXTERN int Output_Type;
263 
EXTERN int hiQdither;
264 
 
265 
/* decoder operation control flags */
266 
EXTERN int Quiet_Flag;
267 
EXTERN int Trace_Flag;
268 
EXTERN int Fault_Flag;
269 
EXTERN int Verbose_Flag;
270 
EXTERN int Two_Streams;
271 
EXTERN int Spatial_Flag;
272 
EXTERN int Reference_IDCT_Flag;
273 
EXTERN int Frame_Store_Flag;
274 
EXTERN int System_Stream_Flag;
275 
EXTERN int Display_Progressive_Flag;
276 
EXTERN int Ersatz_Flag;
277 
EXTERN int Big_Picture_Flag;
278 
EXTERN int Verify_Flag;
279 
EXTERN int Stats_Flag;
280 
EXTERN int User_Data_Flag;
281 
EXTERN int Main_Bitstream_Flag;
282 
 
283 
 
284 
/* filenames */
285 
EXTERN char *Output_Picture_Filename;
286 
EXTERN char *Substitute_Picture_Filename;
287 
EXTERN char *Main_Bitstream_Filename;
288 
EXTERN char *Enhancement_Layer_Bitstream_Filename;
289 
 
290 
 
291 
/* buffers for multiuse purposes */
292 
EXTERN char Error_Text[256];
293 
EXTERN unsigned char *Clip;
294 
 
295 
/* pointers to generic picture buffers */
296 
EXTERN unsigned char *backward_reference_frame[3];
297 
EXTERN unsigned char *forward_reference_frame[3];
298 
 
299 
EXTERN unsigned char *auxframe[3];
300 
EXTERN unsigned char *current_frame[3];
301 
EXTERN unsigned char *substitute_frame[3];
302 
 
303 
 
304 
/* pointers to scalability picture buffers */
305 
EXTERN unsigned char *llframe0[3];
306 
EXTERN unsigned char *llframe1[3];
307 
 
308 
EXTERN short *lltmp;
309 
EXTERN char *Lower_Layer_Picture_Filename;
310 
 
311 
 
312 
 
313 
 
314 
/* non-normative variables derived from normative elements */
315 
EXTERN int Coded_Picture_Width;
316 
EXTERN int Coded_Picture_Height;
317 
EXTERN int Chroma_Width;
318 
EXTERN int Chroma_Height;
319 
EXTERN int block_count;
320 
EXTERN int Second_Field;
321 
EXTERN int profile, level;
322 
 
323 
/* normative derived variables (as per ISO/IEC 13818-2) */
324 
EXTERN int horizontal_size;
325 
EXTERN int vertical_size;
326 
EXTERN int mb_width;
327 
EXTERN int mb_height;
328 
EXTERN double bit_rate;
329 
EXTERN double frame_rate;
330 
 
331 
 
332 
 
333 
/* headers */
334 
 
335 
/* ISO/IEC 13818-2 section 6.2.2.1:  sequence_header() */
336 
EXTERN int aspect_ratio_information;
337 
EXTERN int frame_rate_code;
338 
EXTERN int bit_rate_value;
339 
EXTERN int vbv_buffer_size;
340 
EXTERN int constrained_parameters_flag;
341 
 
342 
/* ISO/IEC 13818-2 section 6.2.2.3:  sequence_extension() */
343 
EXTERN int profile_and_level_indication;
344 
EXTERN int progressive_sequence;
345 
EXTERN int chroma_format;
346 
EXTERN int low_delay;
347 
EXTERN int frame_rate_extension_n;
348 
EXTERN int frame_rate_extension_d;
349 
 
350 
/* ISO/IEC 13818-2 section 6.2.2.4:  sequence_display_extension() */
351 
EXTERN int video_format;
352 
EXTERN int color_description;
353 
EXTERN int color_primaries;
354 
EXTERN int transfer_characteristics;
355 
EXTERN int matrix_coefficients;
356 
EXTERN int display_horizontal_size;
357 
EXTERN int display_vertical_size;
358 
 
359 
/* ISO/IEC 13818-2 section 6.2.3: picture_header() */
360 
EXTERN int temporal_reference;
361 
EXTERN int picture_coding_type;
362 
EXTERN int vbv_delay;
363 
EXTERN int full_pel_forward_vector;
364 
EXTERN int forward_f_code;
365 
EXTERN int full_pel_backward_vector;
366 
EXTERN int backward_f_code;
367 
 
368 
 
369 
/* ISO/IEC 13818-2 section 6.2.3.1: picture_coding_extension() header */
370 
EXTERN int f_code[2][2];
371 
EXTERN int intra_dc_precision;
372 
EXTERN int picture_structure;
373 
EXTERN int top_field_first;
374 
EXTERN int frame_pred_frame_dct;
375 
EXTERN int concealment_motion_vectors;
376 
 
377 
EXTERN int intra_vlc_format;
378 
 
379 
EXTERN int repeat_first_field;
380 
 
381 
EXTERN int chroma_420_type;
382 
EXTERN int progressive_frame;
383 
EXTERN int composite_display_flag;
384 
EXTERN int v_axis;
385 
EXTERN int field_sequence;
386 
EXTERN int sub_carrier;
387 
EXTERN int burst_amplitude;
388 
EXTERN int sub_carrier_phase;
389 
 
390 
 
391 
 
392 
/* ISO/IEC 13818-2 section 6.2.3.3: picture_display_extension() header */
393 
EXTERN int frame_center_horizontal_offset[3];
394 
EXTERN int frame_center_vertical_offset[3];
395 
 
396 
 
397 
 
398 
/* ISO/IEC 13818-2 section 6.2.2.5: sequence_scalable_extension() header */
399 
EXTERN int layer_id;
400 
EXTERN int lower_layer_prediction_horizontal_size;
401 
EXTERN int lower_layer_prediction_vertical_size;
402 
EXTERN int horizontal_subsampling_factor_m;
403 
EXTERN int horizontal_subsampling_factor_n;
404 
EXTERN int vertical_subsampling_factor_m;
405 
EXTERN int vertical_subsampling_factor_n;
406 
 
407 
 
408 
/* ISO/IEC 13818-2 section 6.2.3.5: picture_spatial_scalable_extension() header */
409 
EXTERN int lower_layer_temporal_reference;
410 
EXTERN int lower_layer_horizontal_offset;
411 
EXTERN int lower_layer_vertical_offset;
412 
EXTERN int spatial_temporal_weight_code_table_index;
413 
EXTERN int lower_layer_progressive_frame;
414 
EXTERN int lower_layer_deinterlaced_field_select;
415 
 
416 
 
417 
 
418 
 
419 
 
420 
 
421 
/* ISO/IEC 13818-2 section 6.2.3.6: copyright_extension() header */
422 
EXTERN int copyright_flag;
423 
EXTERN int copyright_identifier;
424 
EXTERN int original_or_copy;
425 
EXTERN int copyright_number_1;
426 
EXTERN int copyright_number_2;
427 
EXTERN int copyright_number_3;
428 
 
429 
/* ISO/IEC 13818-2 section 6.2.2.6: group_of_pictures_header()  */
430 
EXTERN int drop_flag;
431 
EXTERN int hour;
432 
EXTERN int minute;
433 
EXTERN int sec;
434 
EXTERN int frame;
435 
EXTERN int closed_gop;
436 
EXTERN int broken_link;
437 
 
438 
 
439 
 
440 
/* layer specific variables (needed for SNR and DP scalability) */
441 
EXTERN struct layer_data {
442 
  /* bit input */
443 
  int Infile;
444 
  unsigned char Rdbfr[2048];
445 
  unsigned char *Rdptr;
446 
  unsigned char Inbfr[16];
447 
  /* from mpeg2play */
448 
  unsigned int Bfr;
449 
  unsigned char *Rdmax;
450 
  int Incnt;
451 
  int Bitcnt;
452 
  /* sequence header and quant_matrix_extension() */
453 
  int intra_quantizer_matrix[64];
454 
  int non_intra_quantizer_matrix[64];
455 
  int chroma_intra_quantizer_matrix[64];
456 
  int chroma_non_intra_quantizer_matrix[64];
457 
 
458 
  int load_intra_quantizer_matrix;
459 
  int load_non_intra_quantizer_matrix;
460 
  int load_chroma_intra_quantizer_matrix;
461 
  int load_chroma_non_intra_quantizer_matrix;
462 
 
463 
  int MPEG2_Flag;
464 
  /* sequence scalable extension */
465 
  int scalable_mode;
466 
  /* picture coding extension */
467 
  int q_scale_type;
468 
  int alternate_scan;
469 
  /* picture spatial scalable extension */
470 
  int pict_scal;
471 
  /* slice/macroblock */
472 
  int priority_breakpoint;
473 
  int quantizer_scale;
474 
  int intra_slice;
475 
  short *block[12];
476 
} base, enhan, *ld;
477 
 
478 
 
479 
 
480 
#ifdef VERIFY
481 
EXTERN int verify_sequence_header;
482 
EXTERN int verify_group_of_pictures_header;
483 
EXTERN int verify_picture_header;
484 
EXTERN int verify_slice_header;
485 
EXTERN int verify_sequence_extension;
486 
EXTERN int verify_sequence_display_extension;
487 
EXTERN int verify_quant_matrix_extension;
488 
EXTERN int verify_sequence_scalable_extension;
489 
EXTERN int verify_picture_display_extension;
490 
EXTERN int verify_picture_coding_extension;
491 
EXTERN int verify_picture_spatial_scalable_extension;
492 
EXTERN int verify_picture_temporal_scalable_extension;
493 
EXTERN int verify_copyright_extension;
494 
#endif /* VERIFY */
495 
 
496 
 
497 
EXTERN int Decode_Layer;
498 
 
499 
/* verify.c */
500 
#ifdef VERIFY
501 
void Check_Headers _ANSI_ARGS_((int Bitstream_Framenum, int Sequence_Framenum));
502 
void Clear_Verify_Headers _ANSI_ARGS_((void));
503 
#endif /* VERIFY */
504 
 
505 
 
506 
EXTERN int global_MBA;
507 
EXTERN int global_pic;
508 
EXTERN int True_Framenum;
509 
 
510 
#define TRACE 1
511 
// Run-length decoding
512 
//#define TRACE_RLD 1
513 
// DCT decoding
514 
//#define TRACE_DCT 1
515 
// Inverse Discrete Cosine Transform
516 
//#define TRACE_IDCT 1
517 
// Trace calculation of individual pixels (very detailed)
518 
//#define TRACE_RECON 1
519 
 

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