Statistics
| Branch: | Revision:

ffmpeg / libavcodec / mpegvideo.h @ 2f16af06

History | View | Annotate | Download (38.8 KB)

1
/*
2
 * Generic DCT based hybrid video encoder
3
 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
4
 * Copyright (c) 2002-2004 Michael Niedermayer
5
 *
6
 * This file is part of FFmpeg.
7
 *
8
 * FFmpeg is free software; you can redistribute it and/or
9
 * modify it under the terms of the GNU Lesser General Public
10
 * License as published by the Free Software Foundation; either
11
 * version 2.1 of the License, or (at your option) any later version.
12
 *
13
 * FFmpeg 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
 * Lesser General Public License for more details.
17
 *
18
 * You should have received a copy of the GNU Lesser General Public
19
 * License along with FFmpeg; if not, write to the Free Software
20
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21
 */
22

    
23
/**
24
 * @file mpegvideo.h
25
 * mpegvideo header.
26
 */
27

    
28
#ifndef AVCODEC_MPEGVIDEO_H
29
#define AVCODEC_MPEGVIDEO_H
30

    
31
#include "dsputil.h"
32
#include "bitstream.h"
33
#include "ratecontrol.h"
34
#include "parser.h"
35

    
36
#define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
37

    
38
enum OutputFormat {
39
    FMT_MPEG1,
40
    FMT_H261,
41
    FMT_H263,
42
    FMT_MJPEG,
43
    FMT_H264,
44
};
45

    
46
#define EDGE_WIDTH 16
47

    
48
#define MPEG_BUF_SIZE (16 * 1024)
49

    
50
#define QMAT_SHIFT_MMX 16
51
#define QMAT_SHIFT 22
52

    
53
#define MAX_FCODE 7
54
#define MAX_MV 2048
55

    
56
#define MAX_THREADS 8
57

    
58
#define MAX_PICTURE_COUNT 32
59

    
60
#define ME_MAP_SIZE 64
61
#define ME_MAP_SHIFT 3
62
#define ME_MAP_MV_BITS 11
63

    
64
/* run length table */
65
#define MAX_RUN    64
66
#define MAX_LEVEL  64
67

    
68
#define I_TYPE FF_I_TYPE  ///< Intra
69
#define P_TYPE FF_P_TYPE  ///< Predicted
70
#define B_TYPE FF_B_TYPE  ///< Bi-dir predicted
71
#define S_TYPE FF_S_TYPE  ///< S(GMC)-VOP MPEG4
72
#define SI_TYPE FF_SI_TYPE  ///< Switching Intra
73
#define SP_TYPE FF_SP_TYPE  ///< Switching Predicted
74

    
75
#define MAX_MB_BYTES (30*16*16*3/8 + 120)
76

    
77
#define INPLACE_OFFSET 16
78

    
79
/**
80
 * Scantable.
81
 */
82
typedef struct ScanTable{
83
    const uint8_t *scantable;
84
    uint8_t permutated[64];
85
    uint8_t raster_end[64];
86
#ifdef ARCH_POWERPC
87
                /** Used by dct_quantise_alitvec to find last-non-zero */
88
    DECLARE_ALIGNED_8(uint8_t, inverse[64]);
89
#endif
90
} ScanTable;
91

    
92
/**
93
 * Picture.
94
 */
95
typedef struct Picture{
96
    FF_COMMON_FRAME
97

    
98
    /**
99
     * halfpel luma planes.
100
     */
101
    uint8_t *interpolated[3];
102
    int16_t (*motion_val_base[2])[2];
103
    uint32_t *mb_type_base;
104
#define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if theres just one type
105
#define IS_INTRA4x4(a)   ((a)&MB_TYPE_INTRA4x4)
106
#define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
107
#define IS_PCM(a)        ((a)&MB_TYPE_INTRA_PCM)
108
#define IS_INTRA(a)      ((a)&7)
109
#define IS_INTER(a)      ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
110
#define IS_SKIP(a)       ((a)&MB_TYPE_SKIP)
111
#define IS_INTRA_PCM(a)  ((a)&MB_TYPE_INTRA_PCM)
112
#define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
113
#define IS_DIRECT(a)     ((a)&MB_TYPE_DIRECT2)
114
#define IS_GMC(a)        ((a)&MB_TYPE_GMC)
115
#define IS_16X16(a)      ((a)&MB_TYPE_16x16)
116
#define IS_16X8(a)       ((a)&MB_TYPE_16x8)
117
#define IS_8X16(a)       ((a)&MB_TYPE_8x16)
118
#define IS_8X8(a)        ((a)&MB_TYPE_8x8)
119
#define IS_SUB_8X8(a)    ((a)&MB_TYPE_16x16) //note reused
120
#define IS_SUB_8X4(a)    ((a)&MB_TYPE_16x8)  //note reused
121
#define IS_SUB_4X8(a)    ((a)&MB_TYPE_8x16)  //note reused
122
#define IS_SUB_4X4(a)    ((a)&MB_TYPE_8x8)   //note reused
123
#define IS_ACPRED(a)     ((a)&MB_TYPE_ACPRED)
124
#define IS_QUANT(a)      ((a)&MB_TYPE_QUANT)
125
#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
126
#define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
127
#define HAS_CBP(a)        ((a)&MB_TYPE_CBP)
128

    
129
    int field_poc[2];           ///< h264 top/bottom POC
130
    int poc;                    ///< h264 frame POC
131
    int frame_num;              ///< h264 frame_num
132
    int pic_id;                 ///< h264 pic_num or long_term_pic_idx
133
    int long_ref;               ///< 1->long term reference 0->short term reference
134
    int ref_poc[2][16];         ///< h264 POCs of the frames used as reference
135
    int ref_count[2];           ///< number of entries in ref_poc
136

    
137
    int mb_var_sum;             ///< sum of MB variance for current frame
138
    int mc_mb_var_sum;          ///< motion compensated MB variance for current frame
139
    uint16_t *mb_var;           ///< Table for MB variances
140
    uint16_t *mc_mb_var;        ///< Table for motion compensated MB variances
141
    uint8_t *mb_mean;           ///< Table for MB luminance
142
    int32_t *mb_cmp_score;      ///< Table for MB cmp scores, for mb decision FIXME remove
143
    int b_frame_score;          /* */
144
} Picture;
145

    
146
struct MpegEncContext;
147

    
148
/**
149
 * Motion estimation context.
150
 */
151
typedef struct MotionEstContext{
152
    AVCodecContext *avctx;
153
    int skip;                          ///< set if ME is skipped for the current MB
154
    int co_located_mv[4][2];           ///< mv from last p frame for direct mode ME
155
    int direct_basis_mv[4][2];
156
    uint8_t *scratchpad;               ///< data area for the me algo, so that the ME doesnt need to malloc/free
157
    uint8_t *best_mb;
158
    uint8_t *temp_mb[2];
159
    uint8_t *temp;
160
    int best_bits;
161
    uint32_t *map;                     ///< map to avoid duplicate evaluations
162
    uint32_t *score_map;               ///< map to store the scores
163
    int map_generation;
164
    int pre_penalty_factor;
165
    int penalty_factor;
166
    int sub_penalty_factor;
167
    int mb_penalty_factor;
168
    int flags;
169
    int sub_flags;
170
    int mb_flags;
171
    int pre_pass;                      ///< = 1 for the pre pass
172
    int dia_size;
173
    int xmin;
174
    int xmax;
175
    int ymin;
176
    int ymax;
177
    int pred_x;
178
    int pred_y;
179
    uint8_t *src[4][4];
180
    uint8_t *ref[4][4];
181
    int stride;
182
    int uvstride;
183
    /* temp variables for picture complexity calculation */
184
    int mc_mb_var_sum_temp;
185
    int mb_var_sum_temp;
186
    int scene_change_score;
187
/*    cmp, chroma_cmp;*/
188
    op_pixels_func (*hpel_put)[4];
189
    op_pixels_func (*hpel_avg)[4];
190
    qpel_mc_func (*qpel_put)[16];
191
    qpel_mc_func (*qpel_avg)[16];
192
    uint8_t (*mv_penalty)[MAX_MV*2+1];  ///< amount of bits needed to encode a MV
193
    uint8_t *current_mv_penalty;
194
    int (*sub_motion_search)(struct MpegEncContext * s,
195
                                  int *mx_ptr, int *my_ptr, int dmin,
196
                                  int src_index, int ref_index,
197
                                  int size, int h);
198
}MotionEstContext;
199

    
200
/**
201
 * MpegEncContext.
202
 */
203
typedef struct MpegEncContext {
204
    struct AVCodecContext *avctx;
205
    /* the following parameters must be initialized before encoding */
206
    int width, height;///< picture size. must be a multiple of 16
207
    int gop_size;
208
    int intra_only;   ///< if true, only intra pictures are generated
209
    int bit_rate;     ///< wanted bit rate
210
    enum OutputFormat out_format; ///< output format
211
    int h263_pred;    ///< use mpeg4/h263 ac/dc predictions
212

    
213
/* the following codec id fields are deprecated in favor of codec_id */
214
    int h263_plus;    ///< h263 plus headers
215
    int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
216
    int h263_flv;     ///< use flv h263 header
217

    
218
    enum CodecID codec_id;     /* see CODEC_ID_xxx */
219
    int fixed_qscale; ///< fixed qscale if non zero
220
    int encoding;     ///< true if we are encoding (vs decoding)
221
    int flags;        ///< AVCodecContext.flags (HQ, MV4, ...)
222
    int flags2;       ///< AVCodecContext.flags2
223
    int max_b_frames; ///< max number of b-frames for encoding
224
    int luma_elim_threshold;
225
    int chroma_elim_threshold;
226
    int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
227
    int workaround_bugs;       ///< workaround bugs in encoders which cannot be detected automatically
228
    int codec_tag;             ///< internal codec_tag upper case converted from avctx codec_tag
229
    int stream_codec_tag;      ///< internal stream_codec_tag upper case converted from avctx stream_codec_tag
230
    /* the following fields are managed internally by the encoder */
231

    
232
    /** bit output */
233
    PutBitContext pb;
234

    
235
    /* sequence parameters */
236
    int context_initialized;
237
    int input_picture_number;  ///< used to set pic->display_picture_number, shouldnt be used for/by anything else
238
    int coded_picture_number;  ///< used to set pic->coded_picture_number, shouldnt be used for/by anything else
239
    int picture_number;       //FIXME remove, unclear definition
240
    int picture_in_gop_number; ///< 0-> first pic in gop, ...
241
    int b_frames_since_non_b;  ///< used for encoding, relative to not yet reordered input
242
    int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
243
    int mb_width, mb_height;   ///< number of MBs horizontally & vertically
244
    int mb_stride;             ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
245
    int b8_stride;             ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
246
    int b4_stride;             ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
247
    int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
248
    int mb_num;                ///< number of MBs of a picture
249
    int linesize;              ///< line size, in bytes, may be different from width
250
    int uvlinesize;            ///< line size, for chroma in bytes, may be different from width
251
    Picture *picture;          ///< main picture buffer
252
    Picture **input_picture;   ///< next pictures on display order for encoding
253
    Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
254

    
255
    int start_mb_y;            ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
256
    int end_mb_y;              ///< end   mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
257
    struct MpegEncContext *thread_context[MAX_THREADS];
258

    
259
    /**
260
     * copy of the previous picture structure.
261
     * note, linesize & data, might not match the previous picture (for field pictures)
262
     */
263
    Picture last_picture;
264

    
265
    /**
266
     * copy of the next picture structure.
267
     * note, linesize & data, might not match the next picture (for field pictures)
268
     */
269
    Picture next_picture;
270

    
271
    /**
272
     * copy of the source picture structure for encoding.
273
     * note, linesize & data, might not match the source picture (for field pictures)
274
     */
275
    Picture new_picture;
276

    
277
    /**
278
     * copy of the current picture structure.
279
     * note, linesize & data, might not match the current picture (for field pictures)
280
     */
281
    Picture current_picture;    ///< buffer to store the decompressed current picture
282

    
283
    Picture *last_picture_ptr;     ///< pointer to the previous picture.
284
    Picture *next_picture_ptr;     ///< pointer to the next picture (for bidir pred)
285
    Picture *current_picture_ptr;  ///< pointer to the current picture
286
    uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
287
    int last_dc[3];                ///< last DC values for MPEG1
288
    int16_t *dc_val_base;
289
    int16_t *dc_val[3];            ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
290
    int16_t dc_cache[4*5];
291
    int y_dc_scale, c_dc_scale;
292
    const uint8_t *y_dc_scale_table;     ///< qscale -> y_dc_scale table
293
    const uint8_t *c_dc_scale_table;     ///< qscale -> c_dc_scale table
294
    const uint8_t *chroma_qscale_table;  ///< qscale -> chroma_qscale (h263)
295
    uint8_t *coded_block_base;
296
    uint8_t *coded_block;          ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
297
    int16_t (*ac_val_base)[16];
298
    int16_t (*ac_val[3])[16];      ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
299
    int ac_pred;
300
    uint8_t *prev_pict_types;     ///< previous picture types in bitstream order, used for mb skip
301
#define PREV_PICT_TYPES_BUFFER_SIZE 256
302
    int mb_skipped;                ///< MUST BE SET only during DECODING
303
    uint8_t *mbskip_table;        /**< used to avoid copy if macroblock skipped (for black regions for example)
304
                                   and used for b-frame encoding & decoding (contains skip table of next P Frame) */
305
    uint8_t *mbintra_table;       ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
306
    uint8_t *cbp_table;           ///< used to store cbp, ac_pred for partitioned decoding
307
    uint8_t *pred_dir_table;      ///< used to store pred_dir for partitioned decoding
308
    uint8_t *allocated_edge_emu_buffer;
309
    uint8_t *edge_emu_buffer;     ///< points into the middle of allocated_edge_emu_buffer
310
    uint8_t *rd_scratchpad;       ///< scratchpad for rate distortion mb decision
311
    uint8_t *obmc_scratchpad;
312
    uint8_t *b_scratchpad;        ///< scratchpad used for writing into write only buffers
313

    
314
    int qscale;                 ///< QP
315
    int chroma_qscale;          ///< chroma QP
316
    unsigned int lambda;        ///< lagrange multipler used in rate distortion
317
    unsigned int lambda2;       ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
318
    int *lambda_table;
319
    int adaptive_quant;         ///< use adaptive quantization
320
    int dquant;                 ///< qscale difference to prev qscale
321
    int pict_type;              ///< I_TYPE, P_TYPE, B_TYPE, ...
322
    int last_pict_type; //FIXME removes
323
    int last_non_b_pict_type;   ///< used for mpeg4 gmc b-frames & ratecontrol
324
    int dropable;
325
    int frame_rate_index;
326
    int last_lambda_for[5];     ///< last lambda for a specific pict type
327

    
328
    /* motion compensation */
329
    int unrestricted_mv;        ///< mv can point outside of the coded picture
330
    int h263_long_vectors;      ///< use horrible h263v1 long vector mode
331
    int decode;                 ///< if 0 then decoding will be skipped (for encoding b frames for example)
332

    
333
    DSPContext dsp;             ///< pointers for accelerated dsp functions
334
    int f_code;                 ///< forward MV resolution
335
    int b_code;                 ///< backward MV resolution for B Frames (mpeg4)
336
    int16_t (*p_mv_table_base)[2];
337
    int16_t (*b_forw_mv_table_base)[2];
338
    int16_t (*b_back_mv_table_base)[2];
339
    int16_t (*b_bidir_forw_mv_table_base)[2];
340
    int16_t (*b_bidir_back_mv_table_base)[2];
341
    int16_t (*b_direct_mv_table_base)[2];
342
    int16_t (*p_field_mv_table_base[2][2])[2];
343
    int16_t (*b_field_mv_table_base[2][2][2])[2];
344
    int16_t (*p_mv_table)[2];            ///< MV table (1MV per MB) p-frame encoding
345
    int16_t (*b_forw_mv_table)[2];       ///< MV table (1MV per MB) forward mode b-frame encoding
346
    int16_t (*b_back_mv_table)[2];       ///< MV table (1MV per MB) backward mode b-frame encoding
347
    int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
348
    int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
349
    int16_t (*b_direct_mv_table)[2];     ///< MV table (1MV per MB) direct mode b-frame encoding
350
    int16_t (*p_field_mv_table[2][2])[2];   ///< MV table (2MV per MB) interlaced p-frame encoding
351
    int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
352
    uint8_t (*p_field_select_table[2]);
353
    uint8_t (*b_field_select_table[2][2]);
354
    int me_method;                       ///< ME algorithm
355
    int mv_dir;
356
#define MV_DIR_BACKWARD  1
357
#define MV_DIR_FORWARD   2
358
#define MV_DIRECT        4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
359
    int mv_type;
360
#define MV_TYPE_16X16       0   ///< 1 vector for the whole mb
361
#define MV_TYPE_8X8         1   ///< 4 vectors (h263, mpeg4 4MV)
362
#define MV_TYPE_16X8        2   ///< 2 vectors, one per 16x8 block
363
#define MV_TYPE_FIELD       3   ///< 2 vectors, one per field
364
#define MV_TYPE_DMV         4   ///< 2 vectors, special mpeg2 Dual Prime Vectors
365
    /**motion vectors for a macroblock
366
       first coordinate : 0 = forward 1 = backward
367
       second "         : depend on type
368
       third  "         : 0 = x, 1 = y
369
    */
370
    int mv[2][4][2];
371
    int field_select[2][2];
372
    int last_mv[2][2][2];             ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
373
    uint8_t *fcode_tab;               ///< smallest fcode needed for each MV
374
    int16_t direct_scale_mv[2][64];   ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
375

    
376
    MotionEstContext me;
377

    
378
    int no_rounding;  /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
379
                        for b-frames rounding mode is allways 0 */
380

    
381
    int hurry_up;     /**< when set to 1 during decoding, b frames will be skipped
382
                         when set to 2 idct/dequant will be skipped too */
383

    
384
    /* macroblock layer */
385
    int mb_x, mb_y;
386
    int mb_skip_run;
387
    int mb_intra;
388
    uint16_t *mb_type;           ///< Table for candidate MB types for encoding
389
#define CANDIDATE_MB_TYPE_INTRA    0x01
390
#define CANDIDATE_MB_TYPE_INTER    0x02
391
#define CANDIDATE_MB_TYPE_INTER4V  0x04
392
#define CANDIDATE_MB_TYPE_SKIPPED   0x08
393
//#define MB_TYPE_GMC      0x10
394

    
395
#define CANDIDATE_MB_TYPE_DIRECT   0x10
396
#define CANDIDATE_MB_TYPE_FORWARD  0x20
397
#define CANDIDATE_MB_TYPE_BACKWARD 0x40
398
#define CANDIDATE_MB_TYPE_BIDIR    0x80
399

    
400
#define CANDIDATE_MB_TYPE_INTER_I    0x100
401
#define CANDIDATE_MB_TYPE_FORWARD_I  0x200
402
#define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
403
#define CANDIDATE_MB_TYPE_BIDIR_I    0x800
404

    
405
#define CANDIDATE_MB_TYPE_DIRECT0    0x1000
406

    
407
    int block_index[6]; ///< index to current MB in block based arrays with edges
408
    int block_wrap[6];
409
    uint8_t *dest[3];
410

    
411
    int *mb_index2xy;        ///< mb_index -> mb_x + mb_y*mb_stride
412

    
413
    /** matrix transmitted in the bitstream */
414
    uint16_t intra_matrix[64];
415
    uint16_t chroma_intra_matrix[64];
416
    uint16_t inter_matrix[64];
417
    uint16_t chroma_inter_matrix[64];
418
#define QUANT_BIAS_SHIFT 8
419
    int intra_quant_bias;    ///< bias for the quantizer
420
    int inter_quant_bias;    ///< bias for the quantizer
421
    int min_qcoeff;          ///< minimum encodable coefficient
422
    int max_qcoeff;          ///< maximum encodable coefficient
423
    int ac_esc_length;       ///< num of bits needed to encode the longest esc
424
    uint8_t *intra_ac_vlc_length;
425
    uint8_t *intra_ac_vlc_last_length;
426
    uint8_t *inter_ac_vlc_length;
427
    uint8_t *inter_ac_vlc_last_length;
428
    uint8_t *luma_dc_vlc_length;
429
    uint8_t *chroma_dc_vlc_length;
430
#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
431

    
432
    int coded_score[8];
433

    
434
    /** precomputed matrix (combine qscale and DCT renorm) */
435
    int (*q_intra_matrix)[64];
436
    int (*q_inter_matrix)[64];
437
    /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
438
    uint16_t (*q_intra_matrix16)[2][64];
439
    uint16_t (*q_inter_matrix16)[2][64];
440
    int block_last_index[12];  ///< last non zero coefficient in block
441
    /* scantables */
442
    DECLARE_ALIGNED_8(ScanTable, intra_scantable);
443
    ScanTable intra_h_scantable;
444
    ScanTable intra_v_scantable;
445
    ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
446

    
447
    /* noise reduction */
448
    int (*dct_error_sum)[64];
449
    int dct_count[2];
450
    uint16_t (*dct_offset)[64];
451

    
452
    void *opaque;              ///< private data for the user
453

    
454
    /* bit rate control */
455
    int64_t wanted_bits;
456
    int64_t total_bits;
457
    int frame_bits;                ///< bits used for the current frame
458
    int next_lambda;               ///< next lambda used for retrying to encode a frame
459
    RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
460

    
461
    /* statistics, used for 2-pass encoding */
462
    int mv_bits;
463
    int header_bits;
464
    int i_tex_bits;
465
    int p_tex_bits;
466
    int i_count;
467
    int f_count;
468
    int b_count;
469
    int skip_count;
470
    int misc_bits; ///< cbp, mb_type
471
    int last_bits; ///< temp var used for calculating the above vars
472

    
473
    /* error concealment / resync */
474
    int error_count;
475
    uint8_t *error_status_table;       ///< table of the error status of each MB
476
#define VP_START            1          ///< current MB is the first after a resync marker
477
#define AC_ERROR            2
478
#define DC_ERROR            4
479
#define MV_ERROR            8
480
#define AC_END              16
481
#define DC_END              32
482
#define MV_END              64
483
//FIXME some prefix?
484

    
485
    int resync_mb_x;                 ///< x position of last resync marker
486
    int resync_mb_y;                 ///< y position of last resync marker
487
    GetBitContext last_resync_gb;    ///< used to search for the next resync marker
488
    int mb_num_left;                 ///< number of MBs left in this video packet (for partitioned Slices only)
489
    int next_p_frame_damaged;        ///< set if the next p frame is damaged, to avoid showing trashed b frames
490
    int error_resilience;
491

    
492
    ParseContext parse_context;
493

    
494
    /* H.263 specific */
495
    int gob_index;
496
    int obmc;                       ///< overlapped block motion compensation
497

    
498
    /* H.263+ specific */
499
    int umvplus;                    ///< == H263+ && unrestricted_mv
500
    int h263_aic;                   ///< Advanded INTRA Coding (AIC)
501
    int h263_aic_dir;               ///< AIC direction: 0 = left, 1 = top
502
    int h263_slice_structured;
503
    int alt_inter_vlc;              ///< alternative inter vlc
504
    int modified_quant;
505
    int loop_filter;
506
    int custom_pcf;
507

    
508
    /* mpeg4 specific */
509
    int time_increment_bits;        ///< number of bits to represent the fractional part of time
510
    int last_time_base;
511
    int time_base;                  ///< time in seconds of last I,P,S Frame
512
    int64_t time;                   ///< time of current frame
513
    int64_t last_non_b_time;
514
    uint16_t pp_time;               ///< time distance between the last 2 p,s,i frames
515
    uint16_t pb_time;               ///< time distance between the last b and p,s,i frame
516
    uint16_t pp_field_time;
517
    uint16_t pb_field_time;         ///< like above, just for interlaced
518
    int shape;
519
    int vol_sprite_usage;
520
    int sprite_width;
521
    int sprite_height;
522
    int sprite_left;
523
    int sprite_top;
524
    int sprite_brightness_change;
525
    int num_sprite_warping_points;
526
    int real_sprite_warping_points;
527
    int sprite_offset[2][2];         ///< sprite offset[isChroma][isMVY]
528
    int sprite_delta[2][2];          ///< sprite_delta [isY][isMVY]
529
    int sprite_shift[2];             ///< sprite shift [isChroma]
530
    int mcsel;
531
    int quant_precision;
532
    int quarter_sample;              ///< 1->qpel, 0->half pel ME/MC
533
    int scalability;
534
    int hierachy_type;
535
    int enhancement_type;
536
    int new_pred;
537
    int reduced_res_vop;
538
    int aspect_ratio_info; //FIXME remove
539
    int sprite_warping_accuracy;
540
    int low_latency_sprite;
541
    int data_partitioning;           ///< data partitioning flag from header
542
    int partitioned_frame;           ///< is current frame partitioned
543
    int rvlc;                        ///< reversible vlc
544
    int resync_marker;               ///< could this stream contain resync markers
545
    int low_delay;                   ///< no reordering needed / has no b-frames
546
    int vo_type;
547
    int vol_control_parameters;      ///< does the stream contain the low_delay flag, used to workaround buggy encoders
548
    int intra_dc_threshold;          ///< QP above whch the ac VLC should be used for intra dc
549
    int use_intra_dc_vlc;
550
    PutBitContext tex_pb;            ///< used for data partitioned VOPs
551
    PutBitContext pb2;               ///< used for data partitioned VOPs
552
    int mpeg_quant;
553
    int t_frame;                       ///< time distance of first I -> B, used for interlaced b frames
554
    int padding_bug_score;             ///< used to detect the VERY common padding bug in MPEG4
555

    
556
    /* divx specific, used to workaround (many) bugs in divx5 */
557
    int divx_version;
558
    int divx_build;
559
    int divx_packed;
560
    uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
561
    int bitstream_buffer_size;
562
    unsigned int allocated_bitstream_buffer_size;
563

    
564
    int xvid_build;
565

    
566
    /* lavc specific stuff, used to workaround bugs in libavcodec */
567
    int lavc_build;
568

    
569
    /* RV10 specific */
570
    int rv10_version; ///< RV10 version: 0 or 3
571
    int rv10_first_dc_coded[3];
572

    
573
    /* MJPEG specific */
574
    struct MJpegContext *mjpeg_ctx;
575
    int mjpeg_vsample[3];       ///< vertical sampling factors, default = {2, 1, 1}
576
    int mjpeg_hsample[3];       ///< horizontal sampling factors, default = {2, 1, 1}
577
    int mjpeg_write_tables;     ///< do we want to have quantisation- and huffmantables in the jpeg file ?
578
    int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers
579

    
580
    /* MSMPEG4 specific */
581
    int mv_table_index;
582
    int rl_table_index;
583
    int rl_chroma_table_index;
584
    int dc_table_index;
585
    int use_skip_mb_code;
586
    int slice_height;      ///< in macroblocks
587
    int first_slice_line;  ///< used in mpeg4 too to handle resync markers
588
    int flipflop_rounding;
589
    int msmpeg4_version;   ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
590
    int per_mb_rl_table;
591
    int esc3_level_length;
592
    int esc3_run_length;
593
    /** [mb_intra][isChroma][level][run][last] */
594
    int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
595
    int inter_intra_pred;
596
    int mspel;
597

    
598
    /* decompression specific */
599
    GetBitContext gb;
600

    
601
    /* Mpeg1 specific */
602
    int gop_picture_number;  ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
603
    int last_mv_dir;         ///< last mv_dir, used for b frame encoding
604
    int broken_link;         ///< no_output_of_prior_pics_flag
605
    uint8_t *vbv_delay_ptr;  ///< pointer to vbv_delay in the bitstream
606

    
607
    /* MPEG2 specific - I wish I had not to support this mess. */
608
    int progressive_sequence;
609
    int mpeg_f_code[2][2];
610
    int picture_structure;
611
/* picture type */
612
#define PICT_TOP_FIELD     1
613
#define PICT_BOTTOM_FIELD  2
614
#define PICT_FRAME         3
615

    
616
    int intra_dc_precision;
617
    int frame_pred_frame_dct;
618
    int top_field_first;
619
    int concealment_motion_vectors;
620
    int q_scale_type;
621
    int intra_vlc_format;
622
    int alternate_scan;
623
    int repeat_first_field;
624
    int chroma_420_type;
625
    int chroma_format;
626
#define CHROMA_420 1
627
#define CHROMA_422 2
628
#define CHROMA_444 3
629
    int chroma_x_shift;//depend on pix_format, that depend on chroma_format
630
    int chroma_y_shift;
631

    
632
    int progressive_frame;
633
    int full_pel[2];
634
    int interlaced_dct;
635
    int first_slice;
636
    int first_field;         ///< is 1 for the first field of a field picture 0 otherwise
637

    
638
    /* RTP specific */
639
    int rtp_mode;
640

    
641
    uint8_t *ptr_lastgob;
642
    int swap_uv;//vcr2 codec is mpeg2 varint with UV swaped
643
    short * pblocks[12];
644

    
645
    DCTELEM (*block)[64]; ///< points to one of the following blocks
646
    DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
647
    int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
648
#define SLICE_OK         0
649
#define SLICE_ERROR     -1
650
#define SLICE_END       -2 ///<end marker found
651
#define SLICE_NOEND     -3 ///<no end marker or error found but mb count exceeded
652

    
653
    void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
654
                           DCTELEM *block/*align 16*/, int n, int qscale);
655
    void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
656
                           DCTELEM *block/*align 16*/, int n, int qscale);
657
    void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
658
                           DCTELEM *block/*align 16*/, int n, int qscale);
659
    void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
660
                           DCTELEM *block/*align 16*/, int n, int qscale);
661
    void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
662
                           DCTELEM *block/*align 16*/, int n, int qscale);
663
    void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
664
                           DCTELEM *block/*align 16*/, int n, int qscale);
665
    void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
666
                           DCTELEM *block/*align 16*/, int n, int qscale);
667
    void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
668
                           DCTELEM *block/*align 16*/, int n, int qscale);
669
    void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
670
                           DCTELEM *block/*align 16*/, int n, int qscale);
671
    void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
672
                           DCTELEM *block/*align 16*/, int n, int qscale);
673
    int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
674
    int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
675
    void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
676
} MpegEncContext;
677

    
678

    
679
int DCT_common_init(MpegEncContext *s);
680
void MPV_decode_defaults(MpegEncContext *s);
681
int MPV_common_init(MpegEncContext *s);
682
void MPV_common_end(MpegEncContext *s);
683
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
684
int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
685
void MPV_frame_end(MpegEncContext *s);
686
int MPV_encode_init(AVCodecContext *avctx);
687
int MPV_encode_end(AVCodecContext *avctx);
688
int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
689
#ifdef HAVE_MMX
690
void MPV_common_init_mmx(MpegEncContext *s);
691
#endif
692
#ifdef ARCH_ALPHA
693
void MPV_common_init_axp(MpegEncContext *s);
694
#endif
695
#ifdef HAVE_MLIB
696
void MPV_common_init_mlib(MpegEncContext *s);
697
#endif
698
#ifdef HAVE_MMI
699
void MPV_common_init_mmi(MpegEncContext *s);
700
#endif
701
#ifdef ARCH_ARMV4L
702
void MPV_common_init_armv4l(MpegEncContext *s);
703
#endif
704
#ifdef ARCH_POWERPC
705
void MPV_common_init_ppc(MpegEncContext *s);
706
#endif
707
extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
708
void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
709
void ff_clean_intra_table_entries(MpegEncContext *s);
710
void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
711
void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
712
void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
713
                                    int src_x, int src_y, int w, int h);
714
void ff_mpeg_flush(AVCodecContext *avctx);
715
void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
716
void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
717
int ff_find_unused_picture(MpegEncContext *s, int shared);
718
void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
719
void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
720
const uint8_t *ff_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
721

    
722
void ff_er_frame_start(MpegEncContext *s);
723
void ff_er_frame_end(MpegEncContext *s);
724
void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
725

    
726

    
727
extern enum PixelFormat ff_yuv420p_list[2];
728

    
729
void ff_init_block_index(MpegEncContext *s);
730

    
731
static inline void ff_update_block_index(MpegEncContext *s){
732
    const int block_size= 8>>s->avctx->lowres;
733

    
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
    s->dest[0]+= 2*block_size;
741
    s->dest[1]+= block_size;
742
    s->dest[2]+= block_size;
743
}
744

    
745
static inline int get_bits_diff(MpegEncContext *s){
746
    const int bits= put_bits_count(&s->pb);
747
    const int last= s->last_bits;
748

    
749
    s->last_bits = bits;
750

    
751
    return bits - last;
752
}
753

    
754
/* motion_est.c */
755
void ff_estimate_p_frame_motion(MpegEncContext * s,
756
                             int mb_x, int mb_y);
757
void ff_estimate_b_frame_motion(MpegEncContext * s,
758
                             int mb_x, int mb_y);
759
int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
760
void ff_fix_long_p_mvs(MpegEncContext * s);
761
void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
762
                     int16_t (*mv_table)[2], int f_code, int type, int truncate);
763
void ff_init_me(MpegEncContext *s);
764
int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
765
inline int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
766
                             int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
767
                             int ref_mv_scale, int size, int h);
768
inline int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
769
                               int ref_index, int size, int h, int add_rate);
770

    
771
/* mpeg12.c */
772
extern const uint16_t ff_mpeg1_default_intra_matrix[64];
773
extern const uint16_t ff_mpeg1_default_non_intra_matrix[64];
774
extern const uint8_t ff_mpeg1_dc_scale_table[128];
775

    
776
void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
777
void mpeg1_encode_mb(MpegEncContext *s,
778
                     DCTELEM block[6][64],
779
                     int motion_x, int motion_y);
780
void ff_mpeg1_encode_init(MpegEncContext *s);
781
void ff_mpeg1_encode_slice_header(MpegEncContext *s);
782
void ff_mpeg1_clean_buffers(MpegEncContext *s);
783

    
784

    
785
/** RLTable. */
786
typedef struct RLTable {
787
    int n;                         ///< number of entries of table_vlc minus 1
788
    int last;                      ///< number of values for last = 0
789
    const uint16_t (*table_vlc)[2];
790
    const int8_t *table_run;
791
    const int8_t *table_level;
792
    uint8_t *index_run[2];         ///< encoding only
793
    int8_t *max_level[2];          ///< encoding & decoding
794
    int8_t *max_run[2];            ///< encoding & decoding
795
    VLC vlc;                       ///< decoding only deprected FIXME remove
796
    RL_VLC_ELEM *rl_vlc[32];       ///< decoding only
797
} RLTable;
798

    
799
void init_rl(RLTable *rl, int use_static);
800
void init_vlc_rl(RLTable *rl, int use_static);
801

    
802
static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
803
{
804
    int index;
805
    index = rl->index_run[last][run];
806
    if (index >= rl->n)
807
        return rl->n;
808
    if (level > rl->max_level[last][run])
809
        return rl->n;
810
    return index + level - 1;
811
}
812

    
813
extern const uint8_t ff_mpeg4_y_dc_scale_table[32];
814
extern const uint8_t ff_mpeg4_c_dc_scale_table[32];
815
extern const uint8_t ff_aic_dc_scale_table[32];
816
extern const int16_t ff_mpeg4_default_intra_matrix[64];
817
extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
818
extern const uint8_t ff_h263_chroma_qscale_table[32];
819
extern const uint8_t ff_h263_loop_filter_strength[32];
820

    
821
/* h261.c */
822
void ff_h261_loop_filter(MpegEncContext *s);
823
void ff_h261_reorder_mb_index(MpegEncContext* s);
824
void ff_h261_encode_mb(MpegEncContext *s,
825
                    DCTELEM block[6][64],
826
                    int motion_x, int motion_y);
827
void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
828
void ff_h261_encode_init(MpegEncContext *s);
829
int ff_h261_get_picture_format(int width, int height);
830

    
831

    
832
/* h263.c, h263dec.c */
833
int ff_h263_decode_init(AVCodecContext *avctx);
834
int ff_h263_decode_frame(AVCodecContext *avctx,
835
                             void *data, int *data_size,
836
                             uint8_t *buf, int buf_size);
837
int ff_h263_decode_end(AVCodecContext *avctx);
838
void h263_encode_mb(MpegEncContext *s,
839
                    DCTELEM block[6][64],
840
                    int motion_x, int motion_y);
841
void mpeg4_encode_mb(MpegEncContext *s,
842
                    DCTELEM block[6][64],
843
                    int motion_x, int motion_y);
844
void h263_encode_picture_header(MpegEncContext *s, int picture_number);
845
void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
846
void h263_encode_gob_header(MpegEncContext * s, int mb_line);
847
int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
848
                        int *px, int *py);
849
void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
850
                   int dir);
851
void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
852
void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
853
#ifdef CONFIG_ENCODERS
854
void h263_encode_init(MpegEncContext *s);
855
#else
856
static void h263_encode_init(MpegEncContext *s) {assert(0);}
857
#endif
858
void h263_decode_init_vlc(MpegEncContext *s);
859
int h263_decode_picture_header(MpegEncContext *s);
860
int ff_h263_decode_gob_header(MpegEncContext *s);
861
int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
862
void ff_h263_update_motion_val(MpegEncContext * s);
863
void ff_h263_loop_filter(MpegEncContext * s);
864
void ff_set_qscale(MpegEncContext * s, int qscale);
865
int ff_h263_decode_mba(MpegEncContext *s);
866
void ff_h263_encode_mba(MpegEncContext *s);
867

    
868
int intel_h263_decode_picture_header(MpegEncContext *s);
869
int flv_h263_decode_picture_header(MpegEncContext *s);
870
int ff_h263_decode_mb(MpegEncContext *s,
871
                      DCTELEM block[6][64]);
872
int ff_mpeg4_decode_mb(MpegEncContext *s,
873
                      DCTELEM block[6][64]);
874
int h263_get_picture_format(int width, int height);
875
void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
876
void ff_mpeg4_clean_buffers(MpegEncContext *s);
877
void ff_mpeg4_stuffing(PutBitContext * pbc);
878
void ff_mpeg4_init_partitions(MpegEncContext *s);
879
void ff_mpeg4_merge_partitions(MpegEncContext *s);
880
void ff_clean_mpeg4_qscales(MpegEncContext *s);
881
void ff_clean_h263_qscales(MpegEncContext *s);
882
int ff_mpeg4_decode_partitions(MpegEncContext *s);
883
int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
884
int ff_h263_resync(MpegEncContext *s);
885
int ff_h263_get_gob_height(MpegEncContext *s);
886
void ff_mpeg4_init_direct_mv(MpegEncContext *s);
887
int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
888
int ff_h263_round_chroma(int x);
889
void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
890

    
891

    
892
/* rv10.c */
893
void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
894
int rv_decode_dc(MpegEncContext *s, int n);
895
void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
896

    
897

    
898
/* msmpeg4.c */
899
void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
900
void msmpeg4_encode_ext_header(MpegEncContext * s);
901
void msmpeg4_encode_mb(MpegEncContext * s,
902
                       DCTELEM block[6][64],
903
                       int motion_x, int motion_y);
904
int msmpeg4_decode_picture_header(MpegEncContext * s);
905
int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
906
int ff_msmpeg4_decode_init(MpegEncContext *s);
907
void ff_msmpeg4_encode_init(MpegEncContext *s);
908
int ff_wmv2_decode_picture_header(MpegEncContext * s);
909
int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
910
void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
911
void ff_mspel_motion(MpegEncContext *s,
912
                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
913
                               uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
914
                               int motion_x, int motion_y, int h);
915
int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
916
void ff_wmv2_encode_mb(MpegEncContext * s,
917
                       DCTELEM block[6][64],
918
                       int motion_x, int motion_y);
919

    
920
/* mjpeg.c */
921
int mjpeg_init(MpegEncContext *s);
922
void mjpeg_close(MpegEncContext *s);
923
void mjpeg_encode_mb(MpegEncContext *s,
924
                     DCTELEM block[6][64]);
925
void mjpeg_picture_header(MpegEncContext *s);
926
void mjpeg_picture_trailer(MpegEncContext *s);
927
void ff_mjpeg_stuffing(PutBitContext * pbc);
928

    
929
#endif /* AVCODEC_MPEGVIDEO_H */
930