Statistics
| Branch: | Revision:

ffmpeg / libavcodec / mpegvideo.h @ d375c104

History | View | Annotate | Download (36.5 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
25
 * mpegvideo header.
26
 */
27

    
28
#ifndef AVCODEC_MPEGVIDEO_H
29
#define AVCODEC_MPEGVIDEO_H
30

    
31
#include "dsputil.h"
32
#include "get_bits.h"
33
#include "put_bits.h"
34
#include "ratecontrol.h"
35
#include "parser.h"
36
#include "mpeg12data.h"
37
#include "rl.h"
38

    
39
#define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
40

    
41
enum OutputFormat {
42
    FMT_MPEG1,
43
    FMT_H261,
44
    FMT_H263,
45
    FMT_MJPEG,
46
    FMT_H264,
47
};
48

    
49
#define MPEG_BUF_SIZE (16 * 1024)
50

    
51
#define QMAT_SHIFT_MMX 16
52
#define QMAT_SHIFT 22
53

    
54
#define MAX_FCODE 7
55
#define MAX_MV 2048
56

    
57
#define MAX_THREADS 16
58

    
59
#define MAX_PICTURE_COUNT 32
60

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

    
65
#define MAX_MB_BYTES (30*16*16*3/8 + 120)
66

    
67
#define INPLACE_OFFSET 16
68

    
69
/* Start codes. */
70
#define SEQ_END_CODE            0x000001b7
71
#define SEQ_START_CODE          0x000001b3
72
#define GOP_START_CODE          0x000001b8
73
#define PICTURE_START_CODE      0x00000100
74
#define SLICE_MIN_START_CODE    0x00000101
75
#define SLICE_MAX_START_CODE    0x000001af
76
#define EXT_START_CODE          0x000001b5
77
#define USER_START_CODE         0x000001b2
78

    
79
/**
80
 * Picture.
81
 */
82
typedef struct Picture{
83
    FF_COMMON_FRAME
84

    
85
    /**
86
     * halfpel luma planes.
87
     */
88
    uint8_t *interpolated[3];
89
    int16_t (*motion_val_base[2])[2];
90
    uint32_t *mb_type_base;
91
#define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type
92
#define IS_INTRA4x4(a)   ((a)&MB_TYPE_INTRA4x4)
93
#define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
94
#define IS_PCM(a)        ((a)&MB_TYPE_INTRA_PCM)
95
#define IS_INTRA(a)      ((a)&7)
96
#define IS_INTER(a)      ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
97
#define IS_SKIP(a)       ((a)&MB_TYPE_SKIP)
98
#define IS_INTRA_PCM(a)  ((a)&MB_TYPE_INTRA_PCM)
99
#define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
100
#define IS_DIRECT(a)     ((a)&MB_TYPE_DIRECT2)
101
#define IS_GMC(a)        ((a)&MB_TYPE_GMC)
102
#define IS_16X16(a)      ((a)&MB_TYPE_16x16)
103
#define IS_16X8(a)       ((a)&MB_TYPE_16x8)
104
#define IS_8X16(a)       ((a)&MB_TYPE_8x16)
105
#define IS_8X8(a)        ((a)&MB_TYPE_8x8)
106
#define IS_SUB_8X8(a)    ((a)&MB_TYPE_16x16) //note reused
107
#define IS_SUB_8X4(a)    ((a)&MB_TYPE_16x8)  //note reused
108
#define IS_SUB_4X8(a)    ((a)&MB_TYPE_8x16)  //note reused
109
#define IS_SUB_4X4(a)    ((a)&MB_TYPE_8x8)   //note reused
110
#define IS_ACPRED(a)     ((a)&MB_TYPE_ACPRED)
111
#define IS_QUANT(a)      ((a)&MB_TYPE_QUANT)
112
#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
113
#define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note does not work if subMBs
114
#define HAS_CBP(a)        ((a)&MB_TYPE_CBP)
115

    
116
    int field_poc[2];           ///< h264 top/bottom POC
117
    int poc;                    ///< h264 frame POC
118
    int frame_num;              ///< h264 frame_num (raw frame_num from slice header)
119
    int mmco_reset;             ///< h264 MMCO_RESET set this 1. Reordering code must not mix pictures before and after MMCO_RESET.
120
    int pic_id;                 /**< h264 pic_num (short -> no wrap version of pic_num,
121
                                     pic_num & max_pic_num; long -> long_pic_num) */
122
    int long_ref;               ///< 1->long term reference 0->short term reference
123
    int ref_poc[2][2][16];      ///< h264 POCs of the frames used as reference (FIXME need per slice)
124
    int ref_count[2][2];        ///< number of entries in ref_poc              (FIXME need per slice)
125
    int mbaff;                  ///< h264 1 -> MBAFF frame 0-> not MBAFF
126
    int field_picture;          ///< whether or not the picture was encoded in seperate fields
127

    
128
    int mb_var_sum;             ///< sum of MB variance for current frame
129
    int mc_mb_var_sum;          ///< motion compensated MB variance for current frame
130
    uint16_t *mb_var;           ///< Table for MB variances
131
    uint16_t *mc_mb_var;        ///< Table for motion compensated MB variances
132
    uint8_t *mb_mean;           ///< Table for MB luminance
133
    int32_t *mb_cmp_score;      ///< Table for MB cmp scores, for mb decision FIXME remove
134
    int b_frame_score;          /* */
135
} Picture;
136

    
137
struct MpegEncContext;
138

    
139
/**
140
 * Motion estimation context.
141
 */
142
typedef struct MotionEstContext{
143
    AVCodecContext *avctx;
144
    int skip;                          ///< set if ME is skipped for the current MB
145
    int co_located_mv[4][2];           ///< mv from last P-frame for direct mode ME
146
    int direct_basis_mv[4][2];
147
    uint8_t *scratchpad;               ///< data area for the ME algo, so that the ME does not need to malloc/free
148
    uint8_t *best_mb;
149
    uint8_t *temp_mb[2];
150
    uint8_t *temp;
151
    int best_bits;
152
    uint32_t *map;                     ///< map to avoid duplicate evaluations
153
    uint32_t *score_map;               ///< map to store the scores
154
    int map_generation;
155
    int pre_penalty_factor;
156
    int penalty_factor;                /*!< an estimate of the bits required to
157
                                        code a given mv value, e.g. (1,0) takes
158
                                        more bits than (0,0). We have to
159
                                        estimate whether any reduction in
160
                                        residual is worth the extra bits. */
161
    int sub_penalty_factor;
162
    int mb_penalty_factor;
163
    int flags;
164
    int sub_flags;
165
    int mb_flags;
166
    int pre_pass;                      ///< = 1 for the pre pass
167
    int dia_size;
168
    int xmin;
169
    int xmax;
170
    int ymin;
171
    int ymax;
172
    int pred_x;
173
    int pred_y;
174
    uint8_t *src[4][4];
175
    uint8_t *ref[4][4];
176
    int stride;
177
    int uvstride;
178
    /* temp variables for picture complexity calculation */
179
    int mc_mb_var_sum_temp;
180
    int mb_var_sum_temp;
181
    int scene_change_score;
182
/*    cmp, chroma_cmp;*/
183
    op_pixels_func (*hpel_put)[4];
184
    op_pixels_func (*hpel_avg)[4];
185
    qpel_mc_func (*qpel_put)[16];
186
    qpel_mc_func (*qpel_avg)[16];
187
    uint8_t (*mv_penalty)[MAX_MV*2+1];  ///< amount of bits needed to encode a MV
188
    uint8_t *current_mv_penalty;
189
    int (*sub_motion_search)(struct MpegEncContext * s,
190
                                  int *mx_ptr, int *my_ptr, int dmin,
191
                                  int src_index, int ref_index,
192
                                  int size, int h);
193
}MotionEstContext;
194

    
195
/**
196
 * MpegEncContext.
197
 */
198
typedef struct MpegEncContext {
199
    struct AVCodecContext *avctx;
200
    /* the following parameters must be initialized before encoding */
201
    int width, height;///< picture size. must be a multiple of 16
202
    int gop_size;
203
    int intra_only;   ///< if true, only intra pictures are generated
204
    int bit_rate;     ///< wanted bit rate
205
    enum OutputFormat out_format; ///< output format
206
    int h263_pred;    ///< use mpeg4/h263 ac/dc predictions
207
    int pb_frame;     ///< PB frame mode (0 = none, 1 = base, 2 = improved)
208

    
209
/* the following codec id fields are deprecated in favor of codec_id */
210
    int h263_plus;    ///< h263 plus headers
211
    int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
212
    int h263_flv;     ///< use flv h263 header
213

    
214
    enum CodecID codec_id;     /* see CODEC_ID_xxx */
215
    int fixed_qscale; ///< fixed qscale if non zero
216
    int encoding;     ///< true if we are encoding (vs decoding)
217
    int flags;        ///< AVCodecContext.flags (HQ, MV4, ...)
218
    int flags2;       ///< AVCodecContext.flags2
219
    int max_b_frames; ///< max number of b-frames for encoding
220
    int luma_elim_threshold;
221
    int chroma_elim_threshold;
222
    int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
223
    int workaround_bugs;       ///< workaround bugs in encoders which cannot be detected automatically
224
    int codec_tag;             ///< internal codec_tag upper case converted from avctx codec_tag
225
    int stream_codec_tag;      ///< internal stream_codec_tag upper case converted from avctx stream_codec_tag
226
    /* the following fields are managed internally by the encoder */
227

    
228
    /* sequence parameters */
229
    int context_initialized;
230
    int input_picture_number;  ///< used to set pic->display_picture_number, should not be used for/by anything else
231
    int coded_picture_number;  ///< used to set pic->coded_picture_number, should not be used for/by anything else
232
    int picture_number;       //FIXME remove, unclear definition
233
    int picture_in_gop_number; ///< 0-> first pic in gop, ...
234
    int b_frames_since_non_b;  ///< used for encoding, relative to not yet reordered input
235
    int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
236
    int mb_width, mb_height;   ///< number of MBs horizontally & vertically
237
    int mb_stride;             ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
238
    int b8_stride;             ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
239
    int b4_stride;             ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
240
    int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
241
    int mb_num;                ///< number of MBs of a picture
242
    int linesize;              ///< line size, in bytes, may be different from width
243
    int uvlinesize;            ///< line size, for chroma in bytes, may be different from width
244
    Picture *picture;          ///< main picture buffer
245
    Picture **input_picture;   ///< next pictures on display order for encoding
246
    Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
247

    
248
    int y_dc_scale, c_dc_scale;
249
    int ac_pred;
250
    int block_last_index[12];  ///< last non zero coefficient in block
251
    int h263_aic;              ///< Advanded INTRA Coding (AIC)
252

    
253
    /* scantables */
254
    ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
255
    ScanTable intra_scantable;
256
    ScanTable intra_h_scantable;
257
    ScanTable intra_v_scantable;
258

    
259
    /* WARNING: changes above this line require updates to hardcoded
260
     *          offsets used in asm. */
261

    
262
    /** bit output */
263
    PutBitContext pb;
264

    
265
    int start_mb_y;            ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
266
    int end_mb_y;              ///< end   mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
267
    struct MpegEncContext *thread_context[MAX_THREADS];
268

    
269
    /**
270
     * copy of the previous picture structure.
271
     * note, linesize & data, might not match the previous picture (for field pictures)
272
     */
273
    Picture last_picture;
274

    
275
    /**
276
     * copy of the next picture structure.
277
     * note, linesize & data, might not match the next picture (for field pictures)
278
     */
279
    Picture next_picture;
280

    
281
    /**
282
     * copy of the source picture structure for encoding.
283
     * note, linesize & data, might not match the source picture (for field pictures)
284
     */
285
    Picture new_picture;
286

    
287
    /**
288
     * copy of the current picture structure.
289
     * note, linesize & data, might not match the current picture (for field pictures)
290
     */
291
    Picture current_picture;    ///< buffer to store the decompressed current picture
292

    
293
    Picture *last_picture_ptr;     ///< pointer to the previous picture.
294
    Picture *next_picture_ptr;     ///< pointer to the next picture (for bidir pred)
295
    Picture *current_picture_ptr;  ///< pointer to the current picture
296
    int picture_count;             ///< number of allocated pictures (MAX_PICTURE_COUNT * avctx->thread_count)
297
    int picture_range_start, picture_range_end; ///< the part of picture that this context can allocate in
298
    uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
299
    int last_dc[3];                ///< last DC values for MPEG1
300
    int16_t *dc_val_base;
301
    int16_t *dc_val[3];            ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
302
    int16_t dc_cache[4*5];
303
    const uint8_t *y_dc_scale_table;     ///< qscale -> y_dc_scale table
304
    const uint8_t *c_dc_scale_table;     ///< qscale -> c_dc_scale table
305
    const uint8_t *chroma_qscale_table;  ///< qscale -> chroma_qscale (h263)
306
    uint8_t *coded_block_base;
307
    uint8_t *coded_block;          ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
308
    int16_t (*ac_val_base)[16];
309
    int16_t (*ac_val[3])[16];      ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
310
    uint8_t *prev_pict_types;     ///< previous picture types in bitstream order, used for mb skip
311
#define PREV_PICT_TYPES_BUFFER_SIZE 256
312
    int mb_skipped;                ///< MUST BE SET only during DECODING
313
    uint8_t *mbskip_table;        /**< used to avoid copy if macroblock skipped (for black regions for example)
314
                                   and used for b-frame encoding & decoding (contains skip table of next P Frame) */
315
    uint8_t *mbintra_table;       ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
316
    uint8_t *cbp_table;           ///< used to store cbp, ac_pred for partitioned decoding
317
    uint8_t *pred_dir_table;      ///< used to store pred_dir for partitioned decoding
318
    uint8_t *allocated_edge_emu_buffer;
319
    uint8_t *edge_emu_buffer;     ///< points into the middle of allocated_edge_emu_buffer
320
    uint8_t *rd_scratchpad;       ///< scratchpad for rate distortion mb decision
321
    uint8_t *obmc_scratchpad;
322
    uint8_t *b_scratchpad;        ///< scratchpad used for writing into write only buffers
323

    
324
    int qscale;                 ///< QP
325
    int chroma_qscale;          ///< chroma QP
326
    unsigned int lambda;        ///< lagrange multipler used in rate distortion
327
    unsigned int lambda2;       ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
328
    int *lambda_table;
329
    int adaptive_quant;         ///< use adaptive quantization
330
    int dquant;                 ///< qscale difference to prev qscale
331
    int closed_gop;             ///< MPEG1/2 GOP is closed
332
    int pict_type;              ///< FF_I_TYPE, FF_P_TYPE, FF_B_TYPE, ...
333
    int last_pict_type; //FIXME removes
334
    int last_non_b_pict_type;   ///< used for mpeg4 gmc b-frames & ratecontrol
335
    int dropable;
336
    int frame_rate_index;
337
    int last_lambda_for[5];     ///< last lambda for a specific pict type
338
    int skipdct;                ///< skip dct and code zero residual
339

    
340
    /* motion compensation */
341
    int unrestricted_mv;        ///< mv can point outside of the coded picture
342
    int h263_long_vectors;      ///< use horrible h263v1 long vector mode
343
    int decode;                 ///< if 0 then decoding will be skipped (for encoding b frames for example)
344

    
345
    DSPContext dsp;             ///< pointers for accelerated dsp functions
346
    int f_code;                 ///< forward MV resolution
347
    int b_code;                 ///< backward MV resolution for B Frames (mpeg4)
348
    int16_t (*p_mv_table_base)[2];
349
    int16_t (*b_forw_mv_table_base)[2];
350
    int16_t (*b_back_mv_table_base)[2];
351
    int16_t (*b_bidir_forw_mv_table_base)[2];
352
    int16_t (*b_bidir_back_mv_table_base)[2];
353
    int16_t (*b_direct_mv_table_base)[2];
354
    int16_t (*p_field_mv_table_base[2][2])[2];
355
    int16_t (*b_field_mv_table_base[2][2][2])[2];
356
    int16_t (*p_mv_table)[2];            ///< MV table (1MV per MB) p-frame encoding
357
    int16_t (*b_forw_mv_table)[2];       ///< MV table (1MV per MB) forward mode b-frame encoding
358
    int16_t (*b_back_mv_table)[2];       ///< MV table (1MV per MB) backward mode b-frame encoding
359
    int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
360
    int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
361
    int16_t (*b_direct_mv_table)[2];     ///< MV table (1MV per MB) direct mode b-frame encoding
362
    int16_t (*p_field_mv_table[2][2])[2];   ///< MV table (2MV per MB) interlaced p-frame encoding
363
    int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
364
    uint8_t (*p_field_select_table[2]);
365
    uint8_t (*b_field_select_table[2][2]);
366
    int me_method;                       ///< ME algorithm
367
    int mv_dir;
368
#define MV_DIR_FORWARD   1
369
#define MV_DIR_BACKWARD  2
370
#define MV_DIRECT        4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
371
    int mv_type;
372
#define MV_TYPE_16X16       0   ///< 1 vector for the whole mb
373
#define MV_TYPE_8X8         1   ///< 4 vectors (h263, mpeg4 4MV)
374
#define MV_TYPE_16X8        2   ///< 2 vectors, one per 16x8 block
375
#define MV_TYPE_FIELD       3   ///< 2 vectors, one per field
376
#define MV_TYPE_DMV         4   ///< 2 vectors, special mpeg2 Dual Prime Vectors
377
    /**motion vectors for a macroblock
378
       first coordinate : 0 = forward 1 = backward
379
       second "         : depend on type
380
       third  "         : 0 = x, 1 = y
381
    */
382
    int mv[2][4][2];
383
    int field_select[2][2];
384
    int last_mv[2][2][2];             ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
385
    uint8_t *fcode_tab;               ///< smallest fcode needed for each MV
386
    int16_t direct_scale_mv[2][64];   ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
387

    
388
    MotionEstContext me;
389

    
390
    int no_rounding;  /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
391
                        for b-frames rounding mode is always 0 */
392

    
393
    int hurry_up;     /**< when set to 1 during decoding, b frames will be skipped
394
                         when set to 2 idct/dequant will be skipped too */
395

    
396
    /* macroblock layer */
397
    int mb_x, mb_y;
398
    int mb_skip_run;
399
    int mb_intra;
400
    uint16_t *mb_type;           ///< Table for candidate MB types for encoding
401
#define CANDIDATE_MB_TYPE_INTRA    0x01
402
#define CANDIDATE_MB_TYPE_INTER    0x02
403
#define CANDIDATE_MB_TYPE_INTER4V  0x04
404
#define CANDIDATE_MB_TYPE_SKIPPED   0x08
405
//#define MB_TYPE_GMC      0x10
406

    
407
#define CANDIDATE_MB_TYPE_DIRECT   0x10
408
#define CANDIDATE_MB_TYPE_FORWARD  0x20
409
#define CANDIDATE_MB_TYPE_BACKWARD 0x40
410
#define CANDIDATE_MB_TYPE_BIDIR    0x80
411

    
412
#define CANDIDATE_MB_TYPE_INTER_I    0x100
413
#define CANDIDATE_MB_TYPE_FORWARD_I  0x200
414
#define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
415
#define CANDIDATE_MB_TYPE_BIDIR_I    0x800
416

    
417
#define CANDIDATE_MB_TYPE_DIRECT0    0x1000
418

    
419
    int block_index[6]; ///< index to current MB in block based arrays with edges
420
    int block_wrap[6];
421
    uint8_t *dest[3];
422

    
423
    int *mb_index2xy;        ///< mb_index -> mb_x + mb_y*mb_stride
424

    
425
    /** matrix transmitted in the bitstream */
426
    uint16_t intra_matrix[64];
427
    uint16_t chroma_intra_matrix[64];
428
    uint16_t inter_matrix[64];
429
    uint16_t chroma_inter_matrix[64];
430
#define QUANT_BIAS_SHIFT 8
431
    int intra_quant_bias;    ///< bias for the quantizer
432
    int inter_quant_bias;    ///< bias for the quantizer
433
    int min_qcoeff;          ///< minimum encodable coefficient
434
    int max_qcoeff;          ///< maximum encodable coefficient
435
    int ac_esc_length;       ///< num of bits needed to encode the longest esc
436
    uint8_t *intra_ac_vlc_length;
437
    uint8_t *intra_ac_vlc_last_length;
438
    uint8_t *inter_ac_vlc_length;
439
    uint8_t *inter_ac_vlc_last_length;
440
    uint8_t *luma_dc_vlc_length;
441
    uint8_t *chroma_dc_vlc_length;
442
#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
443

    
444
    int coded_score[8];
445

    
446
    /** precomputed matrix (combine qscale and DCT renorm) */
447
    int (*q_intra_matrix)[64];
448
    int (*q_inter_matrix)[64];
449
    /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
450
    uint16_t (*q_intra_matrix16)[2][64];
451
    uint16_t (*q_inter_matrix16)[2][64];
452

    
453
    /* noise reduction */
454
    int (*dct_error_sum)[64];
455
    int dct_count[2];
456
    uint16_t (*dct_offset)[64];
457

    
458
    void *opaque;              ///< private data for the user
459

    
460
    /* bit rate control */
461
    int64_t wanted_bits;
462
    int64_t total_bits;
463
    int frame_bits;                ///< bits used for the current frame
464
    int next_lambda;               ///< next lambda used for retrying to encode a frame
465
    RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
466

    
467
    /* statistics, used for 2-pass encoding */
468
    int mv_bits;
469
    int header_bits;
470
    int i_tex_bits;
471
    int p_tex_bits;
472
    int i_count;
473
    int f_count;
474
    int b_count;
475
    int skip_count;
476
    int misc_bits; ///< cbp, mb_type
477
    int last_bits; ///< temp var used for calculating the above vars
478

    
479
    /* error concealment / resync */
480
    int error_count;
481
    uint8_t *error_status_table;       ///< table of the error status of each MB
482
#define VP_START            1          ///< current MB is the first after a resync marker
483
#define AC_ERROR            2
484
#define DC_ERROR            4
485
#define MV_ERROR            8
486
#define AC_END              16
487
#define DC_END              32
488
#define MV_END              64
489
//FIXME some prefix?
490

    
491
    int resync_mb_x;                 ///< x position of last resync marker
492
    int resync_mb_y;                 ///< y position of last resync marker
493
    GetBitContext last_resync_gb;    ///< used to search for the next resync marker
494
    int mb_num_left;                 ///< number of MBs left in this video packet (for partitioned Slices only)
495
    int next_p_frame_damaged;        ///< set if the next p frame is damaged, to avoid showing trashed b frames
496
    int error_recognition;
497

    
498
    ParseContext parse_context;
499

    
500
    /* H.263 specific */
501
    int gob_index;
502
    int obmc;                       ///< overlapped block motion compensation
503
    int showed_packed_warning;      ///< flag for having shown the warning about divxs invalid b frames
504

    
505
    /* H.263+ specific */
506
    int umvplus;                    ///< == H263+ && unrestricted_mv
507
    int h263_aic_dir;               ///< AIC direction: 0 = left, 1 = top
508
    int h263_slice_structured;
509
    int alt_inter_vlc;              ///< alternative inter vlc
510
    int modified_quant;
511
    int loop_filter;
512
    int custom_pcf;
513

    
514
    /* mpeg4 specific */
515
    int time_increment_bits;        ///< number of bits to represent the fractional part of time
516
    int last_time_base;
517
    int time_base;                  ///< time in seconds of last I,P,S Frame
518
    int64_t time;                   ///< time of current frame
519
    int64_t last_non_b_time;
520
    uint16_t pp_time;               ///< time distance between the last 2 p,s,i frames
521
    uint16_t pb_time;               ///< time distance between the last b and p,s,i frame
522
    uint16_t pp_field_time;
523
    uint16_t pb_field_time;         ///< like above, just for interlaced
524
    int shape;
525
    int vol_sprite_usage;
526
    int sprite_width;
527
    int sprite_height;
528
    int sprite_left;
529
    int sprite_top;
530
    int sprite_brightness_change;
531
    int num_sprite_warping_points;
532
    int real_sprite_warping_points;
533
    uint16_t sprite_traj[4][2];      ///< sprite trajectory points
534
    int sprite_offset[2][2];         ///< sprite offset[isChroma][isMVY]
535
    int sprite_delta[2][2];          ///< sprite_delta [isY][isMVY]
536
    int sprite_shift[2];             ///< sprite shift [isChroma]
537
    int mcsel;
538
    int quant_precision;
539
    int quarter_sample;              ///< 1->qpel, 0->half pel ME/MC
540
    int scalability;
541
    int hierachy_type;
542
    int enhancement_type;
543
    int new_pred;
544
    int reduced_res_vop;
545
    int aspect_ratio_info; //FIXME remove
546
    int sprite_warping_accuracy;
547
    int low_latency_sprite;
548
    int data_partitioning;           ///< data partitioning flag from header
549
    int partitioned_frame;           ///< is current frame partitioned
550
    int rvlc;                        ///< reversible vlc
551
    int resync_marker;               ///< could this stream contain resync markers
552
    int low_delay;                   ///< no reordering needed / has no b-frames
553
    int vo_type;
554
    int vol_control_parameters;      ///< does the stream contain the low_delay flag, used to workaround buggy encoders
555
    int intra_dc_threshold;          ///< QP above whch the ac VLC should be used for intra dc
556
    int use_intra_dc_vlc;
557
    PutBitContext tex_pb;            ///< used for data partitioned VOPs
558
    PutBitContext pb2;               ///< used for data partitioned VOPs
559
    int mpeg_quant;
560
    int t_frame;                       ///< time distance of first I -> B, used for interlaced b frames
561
    int padding_bug_score;             ///< used to detect the VERY common padding bug in MPEG4
562
    int cplx_estimation_trash_i;
563
    int cplx_estimation_trash_p;
564
    int cplx_estimation_trash_b;
565

    
566
    /* divx specific, used to workaround (many) bugs in divx5 */
567
    int divx_version;
568
    int divx_build;
569
    int divx_packed;
570
    uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
571
    int bitstream_buffer_size;
572
    unsigned int allocated_bitstream_buffer_size;
573

    
574
    int xvid_build;
575

    
576
    /* lavc specific stuff, used to workaround bugs in libavcodec */
577
    int lavc_build;
578

    
579
    /* RV10 specific */
580
    int rv10_version; ///< RV10 version: 0 or 3
581
    int rv10_first_dc_coded[3];
582
    int orig_width, orig_height;
583

    
584
    /* MJPEG specific */
585
    struct MJpegContext *mjpeg_ctx;
586
    int mjpeg_vsample[3];       ///< vertical sampling factors, default = {2, 1, 1}
587
    int mjpeg_hsample[3];       ///< horizontal sampling factors, default = {2, 1, 1}
588

    
589
    /* MSMPEG4 specific */
590
    int mv_table_index;
591
    int rl_table_index;
592
    int rl_chroma_table_index;
593
    int dc_table_index;
594
    int use_skip_mb_code;
595
    int slice_height;      ///< in macroblocks
596
    int first_slice_line;  ///< used in mpeg4 too to handle resync markers
597
    int flipflop_rounding;
598
    int msmpeg4_version;   ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
599
    int per_mb_rl_table;
600
    int esc3_level_length;
601
    int esc3_run_length;
602
    /** [mb_intra][isChroma][level][run][last] */
603
    int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
604
    int inter_intra_pred;
605
    int mspel;
606

    
607
    /* decompression specific */
608
    GetBitContext gb;
609

    
610
    /* Mpeg1 specific */
611
    int gop_picture_number;  ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
612
    int last_mv_dir;         ///< last mv_dir, used for b frame encoding
613
    int broken_link;         ///< no_output_of_prior_pics_flag
614
    uint8_t *vbv_delay_ptr;  ///< pointer to vbv_delay in the bitstream
615

    
616
    /* MPEG-2-specific - I wished not to have to support this mess. */
617
    int progressive_sequence;
618
    int mpeg_f_code[2][2];
619
    int picture_structure;
620
/* picture type */
621
#define PICT_TOP_FIELD     1
622
#define PICT_BOTTOM_FIELD  2
623
#define PICT_FRAME         3
624

    
625
    int intra_dc_precision;
626
    int frame_pred_frame_dct;
627
    int top_field_first;
628
    int concealment_motion_vectors;
629
    int q_scale_type;
630
    int intra_vlc_format;
631
    int alternate_scan;
632
    int repeat_first_field;
633
    int chroma_420_type;
634
    int chroma_format;
635
#define CHROMA_420 1
636
#define CHROMA_422 2
637
#define CHROMA_444 3
638
    int chroma_x_shift;//depend on pix_format, that depend on chroma_format
639
    int chroma_y_shift;
640

    
641
    int progressive_frame;
642
    int full_pel[2];
643
    int interlaced_dct;
644
    int first_slice;
645
    int first_field;         ///< is 1 for the first field of a field picture 0 otherwise
646

    
647
    /* RTP specific */
648
    int rtp_mode;
649

    
650
    uint8_t *ptr_lastgob;
651
    int swap_uv;             //vcr2 codec is an MPEG-2 variant with U and V swapped
652
    DCTELEM (*pblocks[12])[64];
653

    
654
    DCTELEM (*block)[64]; ///< points to one of the following blocks
655
    DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
656
    int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
657
#define SLICE_OK         0
658
#define SLICE_ERROR     -1
659
#define SLICE_END       -2 ///<end marker found
660
#define SLICE_NOEND     -3 ///<no end marker or error found but mb count exceeded
661

    
662
    void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
663
                           DCTELEM *block/*align 16*/, int n, int qscale);
664
    void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
665
                           DCTELEM *block/*align 16*/, int n, int qscale);
666
    void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
667
                           DCTELEM *block/*align 16*/, int n, int qscale);
668
    void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
669
                           DCTELEM *block/*align 16*/, int n, int qscale);
670
    void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
671
                           DCTELEM *block/*align 16*/, int n, int qscale);
672
    void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
673
                           DCTELEM *block/*align 16*/, int n, int qscale);
674
    void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
675
                           DCTELEM *block/*align 16*/, int n, int qscale);
676
    void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
677
                           DCTELEM *block/*align 16*/, int n, int qscale);
678
    void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
679
                           DCTELEM *block/*align 16*/, int n, int qscale);
680
    void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
681
                           DCTELEM *block/*align 16*/, int n, int qscale);
682
    int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
683
    int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
684
    void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
685
} MpegEncContext;
686

    
687
#define REBASE_PICTURE(pic, new_ctx, old_ctx) (pic ? &new_ctx->picture[pic - old_ctx->picture] : NULL)
688

    
689
void MPV_decode_defaults(MpegEncContext *s);
690
int MPV_common_init(MpegEncContext *s);
691
void MPV_common_end(MpegEncContext *s);
692
void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
693
int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
694
void MPV_frame_end(MpegEncContext *s);
695
int MPV_encode_init(AVCodecContext *avctx);
696
int MPV_encode_end(AVCodecContext *avctx);
697
int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
698
void MPV_common_init_mmx(MpegEncContext *s);
699
void MPV_common_init_axp(MpegEncContext *s);
700
void MPV_common_init_mlib(MpegEncContext *s);
701
void MPV_common_init_mmi(MpegEncContext *s);
702
void MPV_common_init_arm(MpegEncContext *s);
703
void MPV_common_init_altivec(MpegEncContext *s);
704
void MPV_common_init_bfin(MpegEncContext *s);
705
void ff_clean_intra_table_entries(MpegEncContext *s);
706
void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
707
void ff_mpeg_flush(AVCodecContext *avctx);
708
void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
709
void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
710
int ff_find_unused_picture(MpegEncContext *s, int shared);
711
void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
712
void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
713
int MPV_lowest_referenced_row(MpegEncContext *s, int dir);
714
void MPV_report_decode_progress(MpegEncContext *s);
715
int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
716
const uint8_t *ff_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
717
void ff_set_qscale(MpegEncContext * s, int qscale);
718

    
719
void ff_er_frame_start(MpegEncContext *s);
720
void ff_er_frame_end(MpegEncContext *s);
721
void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
722

    
723
int ff_dct_common_init(MpegEncContext *s);
724
void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
725
                       const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
726

    
727
void ff_init_block_index(MpegEncContext *s);
728
void ff_copy_picture(Picture *dst, Picture *src);
729

    
730
/**
731
 * allocates a Picture
732
 * The pixels are allocated/set by calling get_buffer() if shared=0
733
 */
734
int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
735

    
736
extern const enum PixelFormat ff_pixfmt_list_420[];
737
extern const enum PixelFormat ff_hwaccel_pixfmt_list_420[];
738

    
739
static inline void ff_update_block_index(MpegEncContext *s){
740
    const int block_size= 8>>s->avctx->lowres;
741

    
742
    s->block_index[0]+=2;
743
    s->block_index[1]+=2;
744
    s->block_index[2]+=2;
745
    s->block_index[3]+=2;
746
    s->block_index[4]++;
747
    s->block_index[5]++;
748
    s->dest[0]+= 2*block_size;
749
    s->dest[1]+= block_size;
750
    s->dest[2]+= block_size;
751
}
752

    
753
static inline int get_bits_diff(MpegEncContext *s){
754
    const int bits= put_bits_count(&s->pb);
755
    const int last= s->last_bits;
756

    
757
    s->last_bits = bits;
758

    
759
    return bits - last;
760
}
761

    
762
static inline int ff_h263_round_chroma(int x){
763
    static const uint8_t h263_chroma_roundtab[16] = {
764
    //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
765
        0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
766
    };
767
    return h263_chroma_roundtab[x & 0xf] + (x >> 3);
768
}
769

    
770
/* motion_est.c */
771
void ff_estimate_p_frame_motion(MpegEncContext * s,
772
                             int mb_x, int mb_y);
773
void ff_estimate_b_frame_motion(MpegEncContext * s,
774
                             int mb_x, int mb_y);
775
int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
776
void ff_fix_long_p_mvs(MpegEncContext * s);
777
void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
778
                     int16_t (*mv_table)[2], int f_code, int type, int truncate);
779
int ff_init_me(MpegEncContext *s);
780
int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
781
int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
782
                             int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
783
                             int ref_mv_scale, int size, int h);
784
int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
785
                               int ref_index, int size, int h, int add_rate);
786

    
787
/* mpeg12.c */
788
extern const uint8_t ff_mpeg1_dc_scale_table[128];
789
extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
790

    
791
void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
792
void mpeg1_encode_mb(MpegEncContext *s,
793
                     DCTELEM block[6][64],
794
                     int motion_x, int motion_y);
795
void ff_mpeg1_encode_init(MpegEncContext *s);
796
void ff_mpeg1_encode_slice_header(MpegEncContext *s);
797
void ff_mpeg1_clean_buffers(MpegEncContext *s);
798
int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s);
799

    
800
extern const uint8_t ff_aic_dc_scale_table[32];
801
extern const uint8_t ff_h263_chroma_qscale_table[32];
802
extern const uint8_t ff_h263_loop_filter_strength[32];
803

    
804
/* h261.c */
805
void ff_h261_loop_filter(MpegEncContext *s);
806
void ff_h261_reorder_mb_index(MpegEncContext* s);
807
void ff_h261_encode_mb(MpegEncContext *s,
808
                    DCTELEM block[6][64],
809
                    int motion_x, int motion_y);
810
void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
811
void ff_h261_encode_init(MpegEncContext *s);
812
int ff_h261_get_picture_format(int width, int height);
813

    
814

    
815
/* rv10.c */
816
void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
817
int rv_decode_dc(MpegEncContext *s, int n);
818
void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
819

    
820

    
821
/* msmpeg4.c */
822
void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
823
void msmpeg4_encode_ext_header(MpegEncContext * s);
824
void msmpeg4_encode_mb(MpegEncContext * s,
825
                       DCTELEM block[6][64],
826
                       int motion_x, int motion_y);
827
int msmpeg4_decode_picture_header(MpegEncContext * s);
828
int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
829
int ff_msmpeg4_decode_init(AVCodecContext *avctx);
830
void ff_msmpeg4_encode_init(MpegEncContext *s);
831
int ff_wmv2_decode_picture_header(MpegEncContext * s);
832
int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
833
void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
834
void ff_mspel_motion(MpegEncContext *s,
835
                               uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
836
                               uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
837
                               int motion_x, int motion_y, int h);
838
int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
839
void ff_wmv2_encode_mb(MpegEncContext * s,
840
                       DCTELEM block[6][64],
841
                       int motion_x, int motion_y);
842

    
843
#endif /* AVCODEC_MPEGVIDEO_H */
844