Statistics
| Branch: | Revision:

ffmpeg / libavcodec / mpegvideo.h @ c009df3f

History | View | Annotate | Download (37.1 KB)

1
/*
2
 * Generic DCT based hybrid video encoder
3
 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
4
 *
5
 * This library is free software; you can redistribute it and/or
6
 * modify it under the terms of the GNU Lesser General Public
7
 * License as published by the Free Software Foundation; either
8
 * version 2 of the License, or (at your option) any later version.
9
 *
10
 * This library is distributed in the hope that it will be useful,
11
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13
 * Lesser General Public License for more details.
14
 *
15
 * You should have received a copy of the GNU Lesser General Public
16
 * License along with this library; if not, write to the Free Software
17
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18
 */
19

    
20
/**
21
 * @file mpegvideo.h
22
 * mpegvideo header.
23
 */
24
 
25
#ifndef AVCODEC_MPEGVIDEO_H
26
#define AVCODEC_MPEGVIDEO_H
27

    
28
#include "dsputil.h"
29

    
30
#define FRAME_SKIPED 100 ///< return value for header parsers if frame is not coded
31

    
32
enum OutputFormat {
33
    FMT_MPEG1,
34
    FMT_H263,
35
    FMT_MJPEG, 
36
    FMT_H264,
37
};
38

    
39
#define EDGE_WIDTH 16
40

    
41
#define MPEG_BUF_SIZE (16 * 1024)
42

    
43
#define QMAT_SHIFT_MMX 16
44
#define QMAT_SHIFT 22
45

    
46
#define MAX_FCODE 7
47
#define MAX_MV 2048
48

    
49
#define MAX_PICTURE_COUNT 15
50

    
51
#define ME_MAP_SIZE 64
52
#define ME_MAP_SHIFT 3
53
#define ME_MAP_MV_BITS 11
54

    
55
/* run length table */
56
#define MAX_RUN    64
57
#define MAX_LEVEL  64
58

    
59
#define I_TYPE FF_I_TYPE  ///< Intra
60
#define P_TYPE FF_P_TYPE  ///< Predicted
61
#define B_TYPE FF_B_TYPE  ///< Bi-dir predicted
62
#define S_TYPE FF_S_TYPE  ///< S(GMC)-VOP MPEG4
63
#define SI_TYPE FF_SI_TYPE  ///< Switching Intra
64
#define SP_TYPE FF_SP_TYPE  ///< Switching Predicted
65

    
66
typedef struct Predictor{
67
    double coeff;
68
    double count;
69
    double decay;
70
} Predictor;
71

    
72
typedef struct RateControlEntry{
73
    int pict_type;
74
    float qscale;
75
    int mv_bits;
76
    int i_tex_bits;
77
    int p_tex_bits;
78
    int misc_bits;
79
    uint64_t expected_bits;
80
    int new_pict_type;
81
    float new_qscale;
82
    int mc_mb_var_sum;
83
    int mb_var_sum;
84
    int i_count;
85
    int f_code;
86
    int b_code;
87
}RateControlEntry;
88

    
89
/**
90
 * rate control context.
91
 */
92
typedef struct RateControlContext{
93
    FILE *stats_file;
94
    int num_entries;              ///< number of RateControlEntries 
95
    RateControlEntry *entry;
96
    int buffer_index;             ///< amount of bits in the video/audio buffer 
97
    Predictor pred[5];
98
    double short_term_qsum;       ///< sum of recent qscales 
99
    double short_term_qcount;     ///< count of recent qscales 
100
    double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization  
101
    double pass1_wanted_bits;     ///< bits which should have been outputed by the pass1 code (including complexity init) 
102
    double last_qscale;
103
    double last_qscale_for[5];    ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff 
104
    int last_mc_mb_var_sum;
105
    int last_mb_var_sum;
106
    uint64_t i_cplx_sum[5];
107
    uint64_t p_cplx_sum[5];
108
    uint64_t mv_bits_sum[5];
109
    uint64_t qscale_sum[5];
110
    int frame_count[5];
111
    int last_non_b_pict_type;
112
}RateControlContext;
113

    
114
/**
115
 * Scantable.
116
 */
117
typedef struct ScanTable{
118
    const uint8_t *scantable;
119
    uint8_t permutated[64];
120
    uint8_t raster_end[64];
121
#ifdef ARCH_POWERPC
122
                /** Used by dct_quantise_alitvec to find last-non-zero */
123
    uint8_t __align8 inverse[64];
124
#endif
125
} ScanTable;
126

    
127
/**
128
 * Picture.
129
 */
130
typedef struct Picture{
131
    FF_COMMON_FRAME
132

    
133
    /**
134
     * halfpel luma planes.
135
     */
136
    uint8_t *interpolated[3];
137
    
138
    int16_t (*motion_val[2])[2];
139
    int8_t *ref_index[2];
140
    uint32_t *mb_type_base;
141
    uint32_t *mb_type;           ///< mb_type_base + mb_width + 2, note: only used for decoding currently
142
#define MB_TYPE_INTRA4x4   0x0001
143
#define MB_TYPE_INTRA16x16 0x0002 //FIXME h264 specific
144
#define MB_TYPE_INTRA_PCM  0x0004 //FIXME h264 specific
145
#define MB_TYPE_16x16      0x0008
146
#define MB_TYPE_16x8       0x0010
147
#define MB_TYPE_8x16       0x0020
148
#define MB_TYPE_8x8        0x0040
149
#define MB_TYPE_INTERLACED 0x0080
150
#define MB_TYPE_DIRECT2     0x0100 //FIXME
151
#define MB_TYPE_ACPRED     0x0200
152
#define MB_TYPE_GMC        0x0400 //FIXME mpeg4 specific
153
#define MB_TYPE_SKIP       0x0800
154
#define MB_TYPE_P0L0       0x1000
155
#define MB_TYPE_P1L0       0x2000
156
#define MB_TYPE_P0L1       0x4000
157
#define MB_TYPE_P1L1       0x8000
158
#define MB_TYPE_L0         (MB_TYPE_P0L0 | MB_TYPE_P1L0)
159
#define MB_TYPE_L1         (MB_TYPE_P0L1 | MB_TYPE_P1L1)
160
#define MB_TYPE_L0L1       (MB_TYPE_L0   | MB_TYPE_L1)
161
#define MB_TYPE_QUANT      0x00010000
162
//Note bits 24-31 are reserved for codec specific use (h264 ref0, mpeg1 pat, ...)
163

    
164
#define IS_INTRA4x4(a)   ((a)&MB_TYPE_INTRA4x4)
165
#define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
166
#define IS_PCM(a)        ((a)&MB_TYPE_INTRA_PCM)
167
#define IS_INTRA(a)      ((a)&7)
168
#define IS_INTER(a)      ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
169
#define IS_SKIP(a)       ((a)&MB_TYPE_SKIP)
170
#define IS_INTRA_PCM(a)  ((a)&MB_TYPE_INTRA_PCM)
171
#define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
172
#define IS_DIRECT(a)     ((a)&MB_TYPE_DIRECT2)
173
#define IS_GMC(a)        ((a)&MB_TYPE_GMC)
174
#define IS_16X16(a)      ((a)&MB_TYPE_16x16)
175
#define IS_16X8(a)       ((a)&MB_TYPE_16x8)
176
#define IS_8X16(a)       ((a)&MB_TYPE_8x16)
177
#define IS_8X8(a)        ((a)&MB_TYPE_8x8)
178
#define IS_SUB_8X8(a)    ((a)&MB_TYPE_16x16) //note reused
179
#define IS_SUB_8X4(a)    ((a)&MB_TYPE_16x8)  //note reused
180
#define IS_SUB_4X8(a)    ((a)&MB_TYPE_8x16)  //note reused
181
#define IS_SUB_4X4(a)    ((a)&MB_TYPE_8x8)   //note reused
182
#define IS_ACPRED(a)     ((a)&MB_TYPE_ACPRED)
183
#define IS_QUANT(a)      ((a)&MB_TYPE_QUANT)
184
#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
185
#define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
186

    
187

    
188
    int field_poc[2];           ///< h264 top/bottom POC
189
    int poc;                    ///< h264 frame POC
190
    int frame_num;              ///< h264 frame_num
191
    int pic_id;                 ///< h264 pic_num or long_term_pic_idx
192
    int long_ref;               ///< 1->long term reference 0->short term reference
193

    
194
    int mb_var_sum;             ///< sum of MB variance for current frame 
195
    int mc_mb_var_sum;          ///< motion compensated MB variance for current frame 
196
    uint16_t *mb_var;           ///< Table for MB variances 
197
    uint16_t *mc_mb_var;        ///< Table for motion compensated MB variances 
198
    uint8_t *mb_mean;           ///< Table for MB luminance 
199
    int32_t *mb_cmp_score;        ///< Table for MB cmp scores, for mb decission 
200
    int b_frame_score;          /* */
201
} Picture;
202

    
203
typedef struct ParseContext{
204
    uint8_t *buffer;
205
    int index;
206
    int last_index;
207
    int buffer_size;
208
    uint32_t state;             ///< contains the last few bytes in MSB order
209
    int frame_start_found;
210
    int overread;               ///< the number of bytes which where irreversibly read from the next frame
211
    int overread_index;         ///< the index into ParseContext.buffer of the overreaded bytes
212
} ParseContext;
213

    
214
struct MpegEncContext;
215

    
216
/**
217
 * Motion estimation context.
218
 */
219
typedef struct MotionEstContext{
220
    int skip;                          ///< set if ME is skiped for the current MB 
221
    int co_located_mv[4][2];           ///< mv from last p frame for direct mode ME 
222
    int direct_basis_mv[4][2];
223
    uint8_t *scratchpad;               ///< data area for the me algo, so that the ME doesnt need to malloc/free 
224
    uint32_t *map;                     ///< map to avoid duplicate evaluations 
225
    uint32_t *score_map;               ///< map to store the scores 
226
    int map_generation;  
227
    int pre_penalty_factor;
228
    int penalty_factor;
229
    int sub_penalty_factor;
230
    int mb_penalty_factor;
231
    int pre_pass;                      ///< = 1 for the pre pass 
232
    int dia_size;
233
    uint8_t (*mv_penalty)[MAX_MV*2+1];  ///< amount of bits needed to encode a MV 
234
    int (*sub_motion_search)(struct MpegEncContext * s,
235
                                  int *mx_ptr, int *my_ptr, int dmin,
236
                                  int xmin, int ymin, int xmax, int ymax,
237
                                  int pred_x, int pred_y, Picture *ref_picture, 
238
                                  int n, int size, uint8_t * const mv_penalty);
239
    int (*motion_search[7])(struct MpegEncContext * s, int block,
240
                             int *mx_ptr, int *my_ptr,
241
                             int P[10][2], int pred_x, int pred_y,
242
                             int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2], 
243
                             int ref_mv_scale, uint8_t * const mv_penalty);
244
    int (*pre_motion_search)(struct MpegEncContext * s, int block,
245
                             int *mx_ptr, int *my_ptr,
246
                             int P[10][2], int pred_x, int pred_y,
247
                             int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2], 
248
                             int ref_mv_scale, uint8_t * const mv_penalty);
249
    int (*get_mb_score)(struct MpegEncContext * s, int mx, int my, int pred_x, int pred_y, Picture *ref_picture, 
250
                                  uint8_t * const mv_penalty);
251
}MotionEstContext;
252

    
253
/**
254
 * MpegEncContext.
255
 */
256
typedef struct MpegEncContext {
257
    struct AVCodecContext *avctx;
258
    /* the following parameters must be initialized before encoding */
259
    int width, height;///< picture size. must be a multiple of 16 
260
    int gop_size;
261
    int intra_only;   ///< if true, only intra pictures are generated 
262
    int bit_rate;     ///< wanted bit rate 
263
    int bit_rate_tolerance; ///< amount of +- bits (>0)
264
    enum OutputFormat out_format; ///< output format 
265
    int h263_pred;    ///< use mpeg4/h263 ac/dc predictions 
266

    
267
/* the following codec id fields are deprecated in favor of codec_id */
268
    int h263_plus;    ///< h263 plus headers 
269
    int h263_rv10;    ///< use RV10 variation for H263 
270
    int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
271
    int h263_intel;   ///< use I263 intel h263 header 
272
    
273
    int codec_id;     /* see CODEC_ID_xxx */
274
    int fixed_qscale; ///< fixed qscale if non zero 
275
    float qcompress;  ///< amount of qscale change between easy & hard scenes (0.0-1.0) 
276
    float qblur;      ///< amount of qscale smoothing over time (0.0-1.0) 
277
    int max_qdiff;    ///< max qscale difference between frames 
278
    int encoding;     ///< true if we are encoding (vs decoding) 
279
    int flags;        ///< AVCodecContext.flags (HQ, MV4, ...) 
280
    int max_b_frames; ///< max number of b-frames for encoding 
281
    int b_frame_strategy;
282
    int luma_elim_threshold;
283
    int chroma_elim_threshold;
284
    int strict_std_compliance; ///< strictly follow the std (MPEG4, ...) 
285
    int workaround_bugs;       ///< workaround bugs in encoders which cannot be detected automatically 
286
    /* the following fields are managed internally by the encoder */
287

    
288
    /** bit output */
289
    PutBitContext pb;
290

    
291
    /* sequence parameters */
292
    int context_initialized;
293
    int input_picture_number;
294
    int picture_number;
295
    int picture_in_gop_number; ///< 0-> first pic in gop, ... 
296
    int b_frames_since_non_b;  ///< used for encoding, relative to not yet reordered input 
297
    int mb_width, mb_height;   ///< number of MBs horizontally & vertically 
298
    int mb_stride;             ///< mb_width+1 used for some arrays to allow simple addressng of left & top MBs withoutt sig11
299
    int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replicateion)
300
    int mb_num;                ///< number of MBs of a picture 
301
    int linesize;              ///< line size, in bytes, may be different from width 
302
    int uvlinesize;            ///< line size, for chroma in bytes, may be different from width 
303
    Picture picture[MAX_PICTURE_COUNT]; ///< main picture buffer 
304
    Picture *input_picture[MAX_PICTURE_COUNT]; ///< next pictures on display order for encoding
305
    Picture *reordered_input_picture[MAX_PICTURE_COUNT]; ///< pointer to the next pictures in codedorder for encoding
306
    
307
    /** 
308
     * copy of the previous picture structure.
309
     * note, linesize & data, might not match the previous picture (for field pictures)
310
     */
311
    Picture last_picture;       
312
    
313
    /** 
314
     * copy of the next picture structure.
315
     * note, linesize & data, might not match the next picture (for field pictures)
316
     */
317
    Picture next_picture;
318
    
319
    /** 
320
     * copy of the source picture structure for encoding.
321
     * note, linesize & data, might not match the source picture (for field pictures)
322
     */
323
    Picture new_picture;
324
    
325
    /** 
326
     * copy of the current picture structure.
327
     * note, linesize & data, might not match the current picture (for field pictures)
328
     */
329
    Picture current_picture;    ///< buffer to store the decompressed current picture 
330
    
331
    Picture *last_picture_ptr;     ///< pointer to the previous picture.
332
    Picture *next_picture_ptr;     ///< pointer to the next picture (for bidir pred) 
333
    Picture *new_picture_ptr;      ///< pointer to the source picture for encoding 
334
    Picture *current_picture_ptr;  ///< pointer to the current picture
335
    int last_dc[3];                ///< last DC values for MPEG1 
336
    int16_t *dc_val[3];            ///< used for mpeg4 DC prediction, all 3 arrays must be continuous 
337
    int16_t dc_cache[4*5];
338
    int y_dc_scale, c_dc_scale;
339
    uint8_t *y_dc_scale_table;     ///< qscale -> y_dc_scale table 
340
    uint8_t *c_dc_scale_table;     ///< qscale -> c_dc_scale table 
341
    uint8_t *coded_block;          ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
342
    int16_t (*ac_val[3])[16];      ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous 
343
    int ac_pred;
344
    uint8_t *prev_pict_types;     ///< previous picture types in bitstream order, used for mb skip 
345
#define PREV_PICT_TYPES_BUFFER_SIZE 256
346
    int mb_skiped;                ///< MUST BE SET only during DECODING 
347
    uint8_t *mbskip_table;        /**< used to avoid copy if macroblock skipped (for black regions for example) 
348
                                   and used for b-frame encoding & decoding (contains skip table of next P Frame) */
349
    uint8_t *mbintra_table;       ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding 
350
    uint8_t *cbp_table;           ///< used to store cbp, ac_pred for partitioned decoding 
351
    uint8_t *pred_dir_table;      ///< used to store pred_dir for partitioned decoding 
352
    uint8_t *allocated_edge_emu_buffer;
353
    uint8_t *edge_emu_buffer;     ///< points into the middle of allocated_edge_emu_buffer  
354

    
355
    int qscale;                 ///< QP 
356
    float frame_qscale;         ///< qscale from the frame level rc FIXME remove
357
    int adaptive_quant;         ///< use adaptive quantization 
358
    int dquant;                 ///< qscale difference to prev qscale  
359
    int pict_type;              ///< I_TYPE, P_TYPE, B_TYPE, ... 
360
    int last_pict_type;
361
    int last_non_b_pict_type;   ///< used for mpeg4 gmc b-frames & ratecontrol 
362
    int frame_rate_index;
363
    /* motion compensation */
364
    int unrestricted_mv;        ///< mv can point outside of the coded picture 
365
    int h263_long_vectors;      ///< use horrible h263v1 long vector mode 
366
    int decode;                 ///< if 0 then decoding will be skiped (for encoding b frames for example)
367

    
368
    DSPContext dsp;             ///< pointers for accelerated dsp fucntions 
369
    int f_code;                 ///< forward MV resolution 
370
    int b_code;                 ///< backward MV resolution for B Frames (mpeg4) 
371
    int16_t (*motion_val)[2];
372
    int16_t (*p_mv_table_base)[2];
373
    int16_t (*b_forw_mv_table_base)[2];
374
    int16_t (*b_back_mv_table_base)[2];
375
    int16_t (*b_bidir_forw_mv_table_base)[2]; 
376
    int16_t (*b_bidir_back_mv_table_base)[2]; 
377
    int16_t (*b_direct_mv_table_base)[2];
378
    int16_t (*p_mv_table)[2];            ///< MV table (1MV per MB) p-frame encoding 
379
    int16_t (*b_forw_mv_table)[2];       ///< MV table (1MV per MB) forward mode b-frame encoding 
380
    int16_t (*b_back_mv_table)[2];       ///< MV table (1MV per MB) backward mode b-frame encoding 
381
    int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding 
382
    int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding 
383
    int16_t (*b_direct_mv_table)[2];     ///< MV table (1MV per MB) direct mode b-frame encoding 
384
    int me_method;                       ///< ME algorithm 
385
    int scene_change_score;
386
    int mv_dir;
387
#define MV_DIR_BACKWARD  1
388
#define MV_DIR_FORWARD   2
389
#define MV_DIRECT        4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
390
    int mv_type;
391
#define MV_TYPE_16X16       0   ///< 1 vector for the whole mb 
392
#define MV_TYPE_8X8         1   ///< 4 vectors (h263, mpeg4 4MV) 
393
#define MV_TYPE_16X8        2   ///< 2 vectors, one per 16x8 block  
394
#define MV_TYPE_FIELD       3   ///< 2 vectors, one per field  
395
#define MV_TYPE_DMV         4   ///< 2 vectors, special mpeg2 Dual Prime Vectors 
396
    /**motion vectors for a macroblock 
397
       first coordinate : 0 = forward 1 = backward
398
       second "         : depend on type
399
       third  "         : 0 = x, 1 = y
400
    */
401
    int mv[2][4][2];
402
    int field_select[2][2];
403
    int last_mv[2][2][2];             ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4 
404
    uint8_t *fcode_tab;               ///< smallest fcode needed for each MV 
405
    
406
    MotionEstContext me;
407

    
408
    int no_rounding;  /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...) 
409
                        for b-frames rounding mode is allways 0 */
410

    
411
    int hurry_up;     /**< when set to 1 during decoding, b frames will be skiped
412
                         when set to 2 idct/dequant will be skipped too */
413
                        
414
    /* macroblock layer */
415
    int mb_x, mb_y;
416
    int mb_skip_run;
417
    int mb_intra;
418
    uint8_t *mb_type;       ///< Table for MB type FIXME remove and use picture->mb_type
419
#define MB_TYPE_INTRA    0x01
420
#define MB_TYPE_INTER    0x02
421
#define MB_TYPE_INTER4V  0x04
422
#define MB_TYPE_SKIPED   0x08
423
//#define MB_TYPE_GMC      0x10
424

    
425
#define MB_TYPE_DIRECT   0x10
426
#define MB_TYPE_FORWARD  0x20
427
#define MB_TYPE_BACKWARD 0x40
428
#define MB_TYPE_BIDIR    0x80
429

    
430
    int block_index[6]; ///< index to current MB in block based arrays with edges
431
    int block_wrap[6];
432
    
433
    int *mb_index2xy;        ///< mb_index -> mb_x + mb_y*mb_stride
434

    
435
    /** matrix transmitted in the bitstream */
436
    uint16_t intra_matrix[64];
437
    uint16_t chroma_intra_matrix[64];
438
    uint16_t inter_matrix[64];
439
    uint16_t chroma_inter_matrix[64];
440
#define QUANT_BIAS_SHIFT 8
441
    int intra_quant_bias;    ///< bias for the quantizer 
442
    int inter_quant_bias;    ///< bias for the quantizer 
443
    int min_qcoeff;          ///< minimum encodable coefficient 
444
    int max_qcoeff;          ///< maximum encodable coefficient 
445
    int ac_esc_length;       ///< num of bits needed to encode the longest esc 
446
    uint8_t *intra_ac_vlc_length;
447
    uint8_t *intra_ac_vlc_last_length;
448
    uint8_t *inter_ac_vlc_length;
449
    uint8_t *inter_ac_vlc_last_length;
450
    uint8_t *luma_dc_vlc_length;
451
    uint8_t *chroma_dc_vlc_length;
452
#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
453

    
454
    /** precomputed matrix (combine qscale and DCT renorm) */
455
    int __align8 q_intra_matrix[32][64];
456
    int __align8 q_inter_matrix[32][64];
457
    /** identical to the above but for MMX & these are not permutated */
458
    uint16_t __align8 q_intra_matrix16[32][64];
459
    uint16_t __align8 q_inter_matrix16[32][64];
460
    uint16_t __align8 q_intra_matrix16_bias[32][64];
461
    uint16_t __align8 q_inter_matrix16_bias[32][64];
462
    int block_last_index[6];  ///< last non zero coefficient in block
463
    /* scantables */
464
    ScanTable __align8 intra_scantable;
465
    ScanTable intra_h_scantable;
466
    ScanTable intra_v_scantable;
467
    ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
468

    
469
    void *opaque;              ///< private data for the user
470

    
471
    /* bit rate control */
472
    int I_frame_bits; //FIXME used in mpeg12 ...
473
    int64_t wanted_bits;
474
    int64_t total_bits;
475
    int frame_bits;                ///< bits used for the current frame 
476
    RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
477

    
478
    /* statistics, used for 2-pass encoding */
479
    int mv_bits;
480
    int header_bits;
481
    int i_tex_bits;
482
    int p_tex_bits;
483
    int i_count;
484
    int f_count;
485
    int b_count;
486
    int skip_count;
487
    int misc_bits; ///< cbp, mb_type
488
    int last_bits; ///< temp var used for calculating the above vars
489
    
490
    /* error concealment / resync */
491
    int error_count;
492
    uint8_t *error_status_table;       ///< table of the error status of each MB  
493
#define VP_START            1          ///< current MB is the first after a resync marker 
494
#define AC_ERROR            2
495
#define DC_ERROR            4
496
#define MV_ERROR            8
497
#define AC_END              16
498
#define DC_END              32
499
#define MV_END              64
500
//FIXME some prefix?
501
    
502
    int resync_mb_x;                 ///< x position of last resync marker 
503
    int resync_mb_y;                 ///< y position of last resync marker 
504
    GetBitContext last_resync_gb;    ///< used to search for the next resync marker 
505
    int mb_num_left;                 ///< number of MBs left in this video packet (for partitioned Slices only)
506
    int next_p_frame_damaged;        ///< set if the next p frame is damaged, to avoid showing trashed b frames 
507
    int error_resilience;
508
    
509
    ParseContext parse_context;
510

    
511
    /* H.263 specific */
512
    int gob_number;
513
    int gob_index;
514
        
515
    /* H.263+ specific */
516
    int umvplus;                    ///< == H263+ && unrestricted_mv 
517
    int h263_aic;                   ///< Advanded INTRA Coding (AIC) 
518
    int h263_aic_dir;               ///< AIC direction: 0 = left, 1 = top 
519
    
520
    /* mpeg4 specific */
521
    int time_increment_resolution;
522
    int time_increment_bits;        ///< number of bits to represent the fractional part of time 
523
    int last_time_base;
524
    int time_base;                  ///< time in seconds of last I,P,S Frame 
525
    int64_t time;                   ///< time of current frame  
526
    int64_t last_non_b_time;
527
    uint16_t pp_time;               ///< time distance between the last 2 p,s,i frames 
528
    uint16_t pb_time;               ///< time distance between the last b and p,s,i frame 
529
    uint16_t pp_field_time;
530
    uint16_t pb_field_time;         ///< like above, just for interlaced 
531
    int shape;
532
    int vol_sprite_usage;
533
    int sprite_width;
534
    int sprite_height;
535
    int sprite_left;
536
    int sprite_top;
537
    int sprite_brightness_change;
538
    int num_sprite_warping_points;
539
    int real_sprite_warping_points;
540
    int sprite_offset[2][2];         ///< sprite offset[isChroma][isMVY] 
541
    int sprite_delta[2][2];          ///< sprite_delta [isY][isMVY]  
542
    int sprite_shift[2];             ///< sprite shift [isChroma] 
543
    int mcsel;
544
    int quant_precision;
545
    int quarter_sample;              ///< 1->qpel, 0->half pel ME/MC  
546
    int scalability;
547
    int hierachy_type;
548
    int enhancement_type;
549
    int new_pred;
550
    int reduced_res_vop;
551
    int aspect_ratio_info; //FIXME remove
552
    int aspected_width;    //FIXME remove
553
    int aspected_height;   //FIXME remove
554
    int sprite_warping_accuracy;
555
    int low_latency_sprite;
556
    int data_partitioning;           ///< data partitioning flag from header 
557
    int partitioned_frame;           ///< is current frame partitioned 
558
    int rvlc;                        ///< reversible vlc 
559
    int resync_marker;               ///< could this stream contain resync markers
560
    int low_delay;                   ///< no reordering needed / has no b-frames 
561
    int vo_type;
562
    int vol_control_parameters;      ///< does the stream contain the low_delay flag, used to workaround buggy encoders 
563
    PutBitContext tex_pb;            ///< used for data partitioned VOPs 
564
    PutBitContext pb2;               ///< used for data partitioned VOPs 
565
#define PB_BUFFER_SIZE 1024*256
566
    uint8_t *tex_pb_buffer;          
567
    uint8_t *pb2_buffer;
568
    int mpeg_quant;
569
    int16_t (*field_mv_table)[2][2];   ///< used for interlaced b frame decoding 
570
    int8_t (*field_select_table)[2];   ///< wtf, no really another table for interlaced b frames 
571
    int t_frame;                       ///< time distance of first I -> B, used for interlaced b frames 
572
    int padding_bug_score;             ///< used to detect the VERY common padding bug in MPEG4 
573

    
574
    /* divx specific, used to workaround (many) bugs in divx5 */
575
    int divx_version;
576
    int divx_build;
577
    int divx_packed;
578
#define BITSTREAM_BUFFER_SIZE 1024*256
579
    uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
580
    int bitstream_buffer_size;
581
    
582
    int xvid_build;
583
    
584
    /* lavc specific stuff, used to workaround bugs in libavcodec */
585
    int ffmpeg_version;
586
    int lavc_build;
587
    
588
    /* RV10 specific */
589
    int rv10_version; ///< RV10 version: 0 or 3 
590
    int rv10_first_dc_coded[3];
591
    
592
    /* MJPEG specific */
593
    struct MJpegContext *mjpeg_ctx;
594
    int mjpeg_vsample[3];       ///< vertical sampling factors, default = {2, 1, 1} 
595
    int mjpeg_hsample[3];       ///< horizontal sampling factors, default = {2, 1, 1} 
596
    int mjpeg_write_tables;     ///< do we want to have quantisation- and huffmantables in the jpeg file ? 
597
    int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers 
598

    
599
    /* MSMPEG4 specific */
600
    int mv_table_index;
601
    int rl_table_index;
602
    int rl_chroma_table_index;
603
    int dc_table_index;
604
    int use_skip_mb_code;
605
    int slice_height;      ///< in macroblocks 
606
    int first_slice_line;  ///< used in mpeg4 too to handle resync markers 
607
    int flipflop_rounding;
608
    int msmpeg4_version;   ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
609
    int per_mb_rl_table;
610
    int esc3_level_length;
611
    int esc3_run_length;
612
    /** [mb_intra][isChroma][level][run][last] */
613
    int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
614
    int inter_intra_pred;
615
    int mspel;
616

    
617
    /* decompression specific */
618
    GetBitContext gb;
619

    
620
    /* Mpeg1 specific */
621
    int fake_picture_number; ///< picture number at the bitstream frame rate 
622
    int gop_picture_number;  ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific 
623
    int last_mv_dir;         ///< last mv_dir, used for b frame encoding 
624
    int broken_link;         ///< no_output_of_prior_pics_flag
625
    
626
    /* MPEG2 specific - I wish I had not to support this mess. */
627
    int progressive_sequence;
628
    int mpeg_f_code[2][2];
629
    int picture_structure;
630
/* picture type */
631
#define PICT_TOP_FIELD     1
632
#define PICT_BOTTOM_FIELD  2
633
#define PICT_FRAME         3
634

    
635
    int intra_dc_precision;
636
    int frame_pred_frame_dct;
637
    int top_field_first;
638
    int concealment_motion_vectors;
639
    int q_scale_type;
640
    int intra_vlc_format;
641
    int alternate_scan;
642
    int repeat_first_field;
643
    int chroma_420_type;
644
    int progressive_frame;
645
    int mpeg2;
646
    int full_pel[2];
647
    int interlaced_dct;
648
    int first_slice;
649
    int first_field;
650
    
651
    /* RTP specific */
652
    /* These are explained on avcodec.h */
653
    int rtp_mode;
654
    int rtp_payload_size;
655
    void (*rtp_callback)(void *data, int size, int packet_number);
656
    uint8_t *ptr_lastgob;
657
    
658
    DCTELEM (*block)[64]; ///< points to one of the following blocks 
659
    DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
660
    int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
661
#define SLICE_OK         0
662
#define SLICE_ERROR     -1
663
#define SLICE_END       -2 //end marker found
664
#define SLICE_NOEND     -3 //no end marker or error found but mb count exceeded
665
    
666
    void (*dct_unquantize_mpeg1)(struct MpegEncContext *s, 
667
                           DCTELEM *block/*align 16*/, int n, int qscale);
668
    void (*dct_unquantize_mpeg2)(struct MpegEncContext *s, 
669
                           DCTELEM *block/*align 16*/, int n, int qscale);
670
    void (*dct_unquantize_h263)(struct MpegEncContext *s, 
671
                           DCTELEM *block/*align 16*/, int n, int qscale);
672
    void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
673
                           DCTELEM *block/*align 16*/, int n, int qscale);
674
    int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
675
    int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
676
} MpegEncContext;
677

    
678

    
679
int DCT_common_init(MpegEncContext *s);
680
int MPV_common_init(MpegEncContext *s);
681
void MPV_common_end(MpegEncContext *s);
682
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
683
int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
684
void MPV_frame_end(MpegEncContext *s);
685
int MPV_encode_init(AVCodecContext *avctx);
686
int MPV_encode_end(AVCodecContext *avctx);
687
int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
688
#ifdef HAVE_MMX
689
void MPV_common_init_mmx(MpegEncContext *s);
690
#endif
691
#ifdef ARCH_ALPHA
692
void MPV_common_init_axp(MpegEncContext *s);
693
#endif
694
#ifdef HAVE_MLIB
695
void MPV_common_init_mlib(MpegEncContext *s);
696
#endif
697
#ifdef HAVE_MMI
698
void MPV_common_init_mmi(MpegEncContext *s);
699
#endif
700
#ifdef ARCH_ARMV4L
701
void MPV_common_init_armv4l(MpegEncContext *s);
702
#endif
703
#ifdef ARCH_POWERPC
704
void MPV_common_init_ppc(MpegEncContext *s);
705
#endif
706
extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
707
void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
708
void ff_clean_intra_table_entries(MpegEncContext *s);
709
void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
710
void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
711
void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h, 
712
                                    int src_x, int src_y, int w, int h);
713
#define END_NOT_FOUND -100
714
int ff_combine_frame( MpegEncContext *s, int next, uint8_t **buf, int *buf_size);
715
void ff_print_debug_info(MpegEncContext *s, Picture *pict);
716

    
717
void ff_er_frame_start(MpegEncContext *s);
718
void ff_er_frame_end(MpegEncContext *s);
719
void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
720

    
721

    
722
extern enum PixelFormat ff_yuv420p_list[2];
723

    
724
static inline void ff_init_block_index(MpegEncContext *s){
725
    s->block_index[0]= s->block_wrap[0]*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
726
    s->block_index[1]= s->block_wrap[0]*(s->mb_y*2 + 1)     + s->mb_x*2;
727
    s->block_index[2]= s->block_wrap[0]*(s->mb_y*2 + 2) - 1 + s->mb_x*2;
728
    s->block_index[3]= s->block_wrap[0]*(s->mb_y*2 + 2)     + s->mb_x*2;
729
    s->block_index[4]= s->block_wrap[4]*(s->mb_y + 1)                    + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
730
    s->block_index[5]= s->block_wrap[4]*(s->mb_y + 1 + s->mb_height + 2) + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
731
}
732

    
733
static inline void ff_update_block_index(MpegEncContext *s){
734
    s->block_index[0]+=2;
735
    s->block_index[1]+=2;
736
    s->block_index[2]+=2;
737
    s->block_index[3]+=2;
738
    s->block_index[4]++;
739
    s->block_index[5]++;
740
}
741

    
742
static inline int get_bits_diff(MpegEncContext *s){
743
    const int bits= get_bit_count(&s->pb);
744
    const int last= s->last_bits;
745

    
746
    s->last_bits = bits;
747

    
748
    return bits - last;
749
}
750

    
751
/* motion_est.c */
752
void ff_estimate_p_frame_motion(MpegEncContext * s,
753
                             int mb_x, int mb_y);
754
void ff_estimate_b_frame_motion(MpegEncContext * s,
755
                             int mb_x, int mb_y);
756
int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
757
void ff_fix_long_p_mvs(MpegEncContext * s);
758
void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
759
void ff_init_me(MpegEncContext *s);
760
int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
761

    
762

    
763
/* mpeg12.c */
764
extern const int16_t ff_mpeg1_default_intra_matrix[64];
765
extern const int16_t ff_mpeg1_default_non_intra_matrix[64];
766
extern uint8_t ff_mpeg1_dc_scale_table[128];
767

    
768
void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
769
void mpeg1_encode_mb(MpegEncContext *s,
770
                     DCTELEM block[6][64],
771
                     int motion_x, int motion_y);
772
void ff_mpeg1_encode_init(MpegEncContext *s);
773
void ff_mpeg1_encode_slice_header(MpegEncContext *s);
774
void ff_mpeg1_clean_buffers(MpegEncContext *s);
775

    
776

    
777
/** RLTable. */
778
typedef struct RLTable {
779
    int n;                         ///< number of entries of table_vlc minus 1 
780
    int last;                      ///< number of values for last = 0 
781
    const uint16_t (*table_vlc)[2];
782
    const int8_t *table_run;
783
    const int8_t *table_level;
784
    uint8_t *index_run[2];         ///< encoding only 
785
    int8_t *max_level[2];          ///< encoding & decoding 
786
    int8_t *max_run[2];            ///< encoding & decoding 
787
    VLC vlc;                       ///< decoding only deprected FIXME remove
788
    RL_VLC_ELEM *rl_vlc[32];       ///< decoding only 
789
} RLTable;
790

    
791
void init_rl(RLTable *rl);
792
void init_vlc_rl(RLTable *rl);
793

    
794
static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
795
{
796
    int index;
797
    index = rl->index_run[last][run];
798
    if (index >= rl->n)
799
        return rl->n;
800
    if (level > rl->max_level[last][run])
801
        return rl->n;
802
    return index + level - 1;
803
}
804

    
805
extern uint8_t ff_mpeg4_y_dc_scale_table[32];
806
extern uint8_t ff_mpeg4_c_dc_scale_table[32];
807
extern const int16_t ff_mpeg4_default_intra_matrix[64];
808
extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
809
int ff_h263_decode_init(AVCodecContext *avctx);
810
int ff_h263_decode_frame(AVCodecContext *avctx, 
811
                             void *data, int *data_size,
812
                             uint8_t *buf, int buf_size);
813
int ff_h263_decode_end(AVCodecContext *avctx);
814
void h263_encode_mb(MpegEncContext *s, 
815
                    DCTELEM block[6][64],
816
                    int motion_x, int motion_y);
817
void mpeg4_encode_mb(MpegEncContext *s, 
818
                    DCTELEM block[6][64],
819
                    int motion_x, int motion_y);
820
void h263_encode_picture_header(MpegEncContext *s, int picture_number);
821
int h263_encode_gob_header(MpegEncContext * s, int mb_line);
822
int16_t *h263_pred_motion(MpegEncContext * s, int block, 
823
                        int *px, int *py);
824
void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n, 
825
                   int dir);
826
void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
827
void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
828
void h263_encode_init(MpegEncContext *s);
829
void h263_decode_init_vlc(MpegEncContext *s);
830
int h263_decode_picture_header(MpegEncContext *s);
831
int ff_h263_decode_gob_header(MpegEncContext *s);
832
int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
833

    
834

    
835
int intel_h263_decode_picture_header(MpegEncContext *s);
836
int ff_h263_decode_mb(MpegEncContext *s,
837
                      DCTELEM block[6][64]);
838
int h263_get_picture_format(int width, int height);
839
void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
840
void ff_mpeg4_clean_buffers(MpegEncContext *s);
841
void ff_mpeg4_stuffing(PutBitContext * pbc);
842
void ff_mpeg4_init_partitions(MpegEncContext *s);
843
void ff_mpeg4_merge_partitions(MpegEncContext *s);
844
void ff_clean_mpeg4_qscales(MpegEncContext *s);
845
void ff_clean_h263_qscales(MpegEncContext *s);
846
int ff_mpeg4_decode_partitions(MpegEncContext *s);
847
int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
848
int ff_h263_resync(MpegEncContext *s);
849
int ff_h263_get_gob_height(MpegEncContext *s);
850
int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
851
inline int ff_h263_round_chroma(int x);
852

    
853

    
854
/* rv10.c */
855
void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
856
int rv_decode_dc(MpegEncContext *s, int n);
857

    
858

    
859
/* msmpeg4.c */
860
void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
861
void msmpeg4_encode_ext_header(MpegEncContext * s);
862
void msmpeg4_encode_mb(MpegEncContext * s, 
863
                       DCTELEM block[6][64],
864
                       int motion_x, int motion_y);
865
int msmpeg4_decode_picture_header(MpegEncContext * s);
866
int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
867
int ff_msmpeg4_decode_init(MpegEncContext *s);
868
void ff_msmpeg4_encode_init(MpegEncContext *s);
869
int ff_wmv2_decode_picture_header(MpegEncContext * s);
870
void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
871
void ff_mspel_motion(MpegEncContext *s,
872
                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
873
                               uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
874
                               int motion_x, int motion_y, int h);
875
int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
876
void ff_wmv2_encode_mb(MpegEncContext * s, 
877
                       DCTELEM block[6][64],
878
                       int motion_x, int motion_y);
879

    
880
/* mjpeg.c */
881
int mjpeg_init(MpegEncContext *s);
882
void mjpeg_close(MpegEncContext *s);
883
void mjpeg_encode_mb(MpegEncContext *s, 
884
                     DCTELEM block[6][64]);
885
void mjpeg_picture_header(MpegEncContext *s);
886
void mjpeg_picture_trailer(MpegEncContext *s);
887

    
888

    
889
/* rate control */
890
int ff_rate_control_init(MpegEncContext *s);
891
float ff_rate_estimate_qscale(MpegEncContext *s);
892
void ff_write_pass1_stats(MpegEncContext *s);
893
void ff_rate_control_uninit(MpegEncContext *s);
894
double ff_eval(char *s, double *const_value, const char **const_name,
895
               double (**func1)(void *, double), const char **func1_name,
896
               double (**func2)(void *, double, double), char **func2_name,
897
               void *opaque);
898

    
899

    
900
#endif /* AVCODEC_MPEGVIDEO_H */