* fixed prototype
[libav.git] / libavcodec / mpegvideo.h
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 #ifndef AVCODEC_MPEGVIDEO_H
21 #define AVCODEC_MPEGVIDEO_H
22
23 #define FRAME_SKIPED 100 // return value for header parsers if frame is not coded
24
25 enum OutputFormat {
26 FMT_MPEG1,
27 FMT_H263,
28 FMT_MJPEG,
29 };
30
31 #define MPEG_BUF_SIZE (16 * 1024)
32
33 #define QMAT_SHIFT_MMX 16
34 #define QMAT_SHIFT 22
35
36 #define MAX_FCODE 7
37 #define MAX_MV 2048
38 #define REORDER_BUFFER_SIZE (FF_MAX_B_FRAMES+2)
39
40 #define ME_MAP_SIZE 64
41 #define ME_MAP_SHIFT 3
42 #define ME_MAP_MV_BITS 11
43
44 /* run length table */
45 #define MAX_RUN 64
46 #define MAX_LEVEL 64
47
48 typedef struct Predictor{
49 double coeff;
50 double count;
51 double decay;
52 } Predictor;
53
54 typedef struct RateControlEntry{
55 int pict_type;
56 float qscale;
57 int mv_bits;
58 int i_tex_bits;
59 int p_tex_bits;
60 int misc_bits;
61 UINT64 expected_bits;
62 int new_pict_type;
63 float new_qscale;
64 int mc_mb_var_sum;
65 int mb_var_sum;
66 int i_count;
67 int f_code;
68 int b_code;
69 }RateControlEntry;
70
71 typedef struct RateControlContext{
72 FILE *stats_file;
73 int num_entries; /* number of RateControlEntries */
74 RateControlEntry *entry;
75 int buffer_index; /* amount of bits in the video/audio buffer */
76 Predictor pred[5];
77 double short_term_qsum; /* sum of recent qscales */
78 double short_term_qcount; /* count of recent qscales */
79 double pass1_rc_eq_output_sum;/* sum of the output of the rc equation, this is used for normalization */
80 double pass1_wanted_bits; /* bits which should have been outputed by the pass1 code (including complexity init) */
81 double last_qscale;
82 double last_qscale_for[5]; /* last qscale for a specific pict type, used for max_diff & ipb factor stuff */
83 int last_mc_mb_var_sum;
84 int last_mb_var_sum;
85 UINT64 i_cplx_sum[5];
86 UINT64 p_cplx_sum[5];
87 UINT64 mv_bits_sum[5];
88 UINT64 qscale_sum[5];
89 int frame_count[5];
90 int last_non_b_pict_type;
91 }RateControlContext;
92
93 typedef struct ReorderBuffer{
94 UINT8 *picture[3];
95 int pict_type;
96 int qscale;
97 int force_type;
98 int picture_number;
99 int picture_in_gop_number;
100 } ReorderBuffer;
101
102 typedef struct ScanTable{
103 const UINT8 *scantable;
104 UINT8 permutated[64];
105 UINT8 raster_end[64];
106 #ifdef ARCH_POWERPC
107 /* Used by dct_quantise_alitvec to find last-non-zero */
108 UINT8 __align8 inverse[64];
109 #endif
110 } ScanTable;
111
112 typedef struct ParseContext{
113 UINT8 *buffer;
114 int index;
115 int last_index;
116 int buffer_size;
117 int state;
118 int frame_start_found;
119 } ParseContext;
120
121 typedef struct MpegEncContext {
122 struct AVCodecContext *avctx;
123 /* the following parameters must be initialized before encoding */
124 int width, height; /* picture size. must be a multiple of 16 */
125 int gop_size;
126 int frame_rate; /* number of frames per second */
127 int intra_only; /* if true, only intra pictures are generated */
128 int bit_rate; /* wanted bit rate */
129 int bit_rate_tolerance; /* amount of +- bits (>0)*/
130 enum OutputFormat out_format; /* output format */
131 int h263_pred; /* use mpeg4/h263 ac/dc predictions */
132
133 /* the following codec id fields are deprecated in favor of codec_id */
134 int h263_plus; /* h263 plus headers */
135 int h263_rv10; /* use RV10 variation for H263 */
136 int h263_msmpeg4; /* generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)*/
137 int h263_intel; /* use I263 intel h263 header */
138
139 int codec_id; /* see CODEC_ID_xxx */
140 int fixed_qscale; /* fixed qscale if non zero */
141 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0) */
142 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
143 int qmin; /* min qscale */
144 int qmax; /* max qscale */
145 int max_qdiff; /* max qscale difference between frames */
146 int encoding; /* true if we are encoding (vs decoding) */
147 int flags; /* AVCodecContext.flags (HQ, MV4, ...) */
148 int force_input_type;/* 0= no force, otherwise I_TYPE, P_TYPE, ... */
149 int max_b_frames; /* max number of b-frames for encoding */
150 int b_frame_strategy;
151 int luma_elim_threshold;
152 int chroma_elim_threshold;
153 int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
154 int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
155 /* the following fields are managed internally by the encoder */
156
157 /* bit output */
158 PutBitContext pb;
159
160 /* sequence parameters */
161 int context_initialized;
162 int input_picture_number;
163 int input_picture_in_gop_number; /* 0-> first pic in gop, ... */
164 int picture_number;
165 int fake_picture_number; /* picture number at the bitstream frame rate */
166 int gop_picture_number; /* index of the first picture of a GOP based on fake_pic_num & mpeg1 specific */
167 int picture_in_gop_number; /* 0-> first pic in gop, ... */
168 int b_frames_since_non_b; /* used for encoding, relative to not yet reordered input */
169 int mb_width, mb_height; /* number of MBs horizontally & vertically */
170 int h_edge_pos, v_edge_pos;/* horizontal / vertical position of the right/bottom edge (pixel replicateion)*/
171 int mb_num; /* number of MBs of a picture */
172 int linesize; /* line size, in bytes, may be different from width */
173 int uvlinesize; /* line size, for chroma in bytes, may be different from width */
174 UINT8 *new_picture[3]; /* picture to be compressed */
175 UINT8 *picture_buffer[REORDER_BUFFER_SIZE][3]; /* internal buffers used for reordering of input pictures */
176 int picture_buffer_index;
177 ReorderBuffer coded_order[REORDER_BUFFER_SIZE];
178 UINT8 *last_picture[3]; /* previous picture */
179 UINT8 *last_picture_base[3]; /* real start of the picture */
180 UINT8 *next_picture[3]; /* previous picture (for bidir pred) */
181 UINT8 *next_picture_base[3]; /* real start of the picture */
182 UINT8 *aux_picture[3]; /* aux picture (for B frames only) */
183 UINT8 *aux_picture_base[3]; /* real start of the picture */
184 UINT8 *current_picture[3]; /* buffer to store the decompressed current picture */
185 void *last_dr_opaque;
186 void *next_dr_opaque;
187 int ip_buffer_count; /* number of buffers, currently only >2 if dr1 is used */
188 int num_available_buffers; /* is 0 at the start & after seeking, after the first I frame its 1 after next I/P 2 */
189 int last_dc[3]; /* last DC values for MPEG1 */
190 INT16 *dc_val[3]; /* used for mpeg4 DC prediction, all 3 arrays must be continuous */
191 int y_dc_scale, c_dc_scale;
192 UINT8 *y_dc_scale_table; /* qscale -> y_dc_scale table */
193 UINT8 *c_dc_scale_table; /* qscale -> c_dc_scale table */
194 UINT8 *coded_block; /* used for coded block pattern prediction (msmpeg4v3, wmv1)*/
195 INT16 (*ac_val[3])[16]; /* used for for mpeg4 AC prediction, all 3 arrays must be continuous */
196 int ac_pred;
197 int mb_skiped; /* MUST BE SET only during DECODING */
198 UINT8 *mbskip_table; /* used to avoid copy if macroblock skipped (for black regions for example)
199 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
200 UINT8 *mbintra_table; /* used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding */
201 UINT8 *cbp_table; /* used to store cbp, ac_pred for partitioned decoding */
202 UINT8 *pred_dir_table; /* used to store pred_dir for partitioned decoding */
203 INT8 *qscale_table; /* used to store qscale */
204 INT8 *aux_qscale_table;
205 INT8 *next_qscale_table;
206 INT8 *last_qscale_table; //FIXME move these into some picture struct (MpegEncContext.aux.qscale_table[])
207 UINT8 *edge_emu_buffer;
208
209 int input_qscale; /* qscale prior to reordering of frames */
210 int input_pict_type; /* pict_type prior to reordering of frames */
211 int force_type; /* 0= no force, otherwise I_TYPE, P_TYPE, ... */
212 int qscale; /* QP */
213 float frame_qscale; /* qscale from the frame level rc */
214 int adaptive_quant; /* use adaptive quantization */
215 int dquant; /* qscale difference to prev qscale */
216 int pict_type; /* I_TYPE, P_TYPE, B_TYPE, ... */
217 int last_pict_type;
218 int last_non_b_pict_type; /* used for mpeg4 gmc b-frames & ratecontrol */
219 int frame_rate_index;
220 /* motion compensation */
221 int unrestricted_mv;
222 int h263_long_vectors; /* use horrible h263v1 long vector mode */
223
224 DSPContext dsp; /* pointers for accelerated dsp fucntions */
225 int f_code; /* forward MV resolution */
226 int b_code; /* backward MV resolution for B Frames (mpeg4) */
227 INT16 (*motion_val)[2]; /* used for MV prediction (4MV per MB) */
228 INT16 (*p_mv_table)[2]; /* MV table (1MV per MB) p-frame encoding */
229 INT16 (*b_forw_mv_table)[2]; /* MV table (1MV per MB) forward mode b-frame encoding */
230 INT16 (*b_back_mv_table)[2]; /* MV table (1MV per MB) backward mode b-frame encoding */
231 INT16 (*b_bidir_forw_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
232 INT16 (*b_bidir_back_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
233 INT16 (*b_direct_forw_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
234 INT16 (*b_direct_back_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
235 INT16 (*b_direct_mv_table)[2]; /* MV table (1MV per MB) direct mode b-frame encoding */
236 int me_method; /* ME algorithm */
237 uint8_t *me_scratchpad; /* data area for the me algo, so that the ME doesnt need to malloc/free */
238 uint32_t *me_map; /* map to avoid duplicate evaluations */
239 uint16_t *me_score_map; /* map to store the SADs */
240 int me_map_generation;
241 int skip_me; /* set if ME is skiped for the current MB */
242 int scene_change_score;
243 int mv_dir;
244 #define MV_DIR_BACKWARD 1
245 #define MV_DIR_FORWARD 2
246 #define MV_DIRECT 4 // bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
247 int mv_type;
248 #define MV_TYPE_16X16 0 /* 1 vector for the whole mb */
249 #define MV_TYPE_8X8 1 /* 4 vectors (h263, mpeg4 4MV) */
250 #define MV_TYPE_16X8 2 /* 2 vectors, one per 16x8 block */
251 #define MV_TYPE_FIELD 3 /* 2 vectors, one per field */
252 #define MV_TYPE_DMV 4 /* 2 vectors, special mpeg2 Dual Prime Vectors */
253 /* motion vectors for a macroblock
254 first coordinate : 0 = forward 1 = backward
255 second " : depend on type
256 third " : 0 = x, 1 = y
257 */
258 int mv[2][4][2];
259 int field_select[2][2];
260 int last_mv[2][2][2]; /* last MV, used for MV prediction in MPEG1 & B-frame MPEG4 */
261 UINT16 (*mv_penalty)[MAX_MV*2+1]; /* amount of bits needed to encode a MV, used for ME */
262 UINT8 *fcode_tab; /* smallest fcode needed for each MV */
263
264 int has_b_frames;
265 int no_rounding; /* apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
266 for b-frames rounding mode is allways 0 */
267
268 int hurry_up; /* when set to 1 during decoding, b frames will be skiped
269 when set to 2 idct/dequant will be skipped too */
270
271 /* macroblock layer */
272 int mb_x, mb_y;
273 int mb_incr;
274 int mb_intra;
275 UINT16 *mb_var; /* Table for MB variances */
276 UINT16 *mc_mb_var; /* Table for motion compensated MB variances */
277 UINT8 *mb_mean; /* Table for MB luminance */
278 UINT8 *mb_type; /* Table for MB type */
279 #define MB_TYPE_INTRA 0x01
280 #define MB_TYPE_INTER 0x02
281 #define MB_TYPE_INTER4V 0x04
282 #define MB_TYPE_SKIPED 0x08
283 #define MB_TYPE_GMC 0x10
284
285 #define MB_TYPE_DIRECT 0x10
286 #define MB_TYPE_FORWARD 0x20
287 #define MB_TYPE_BACKWARD 0x40
288 #define MB_TYPE_BIDIR 0x80
289
290 int block_index[6]; /* index to current MB in block based arrays with edges*/
291 int block_wrap[6];
292
293 /* matrix transmitted in the bitstream */
294 UINT16 intra_matrix[64];
295 UINT16 chroma_intra_matrix[64];
296 UINT16 inter_matrix[64];
297 UINT16 chroma_inter_matrix[64];
298 #define QUANT_BIAS_SHIFT 4
299 int intra_quant_bias; /* bias for the quantizer */
300 int inter_quant_bias; /* bias for the quantizer */
301 int min_qcoeff; /* minimum encodable coefficient */
302 int max_qcoeff; /* maximum encodable coefficient */
303 /* precomputed matrix (combine qscale and DCT renorm) */
304 int __align8 q_intra_matrix[32][64];
305 int __align8 q_inter_matrix[32][64];
306 /* identical to the above but for MMX & these are not permutated */
307 UINT16 __align8 q_intra_matrix16[32][64];
308 UINT16 __align8 q_inter_matrix16[32][64];
309 UINT16 __align8 q_intra_matrix16_bias[32][64];
310 UINT16 __align8 q_inter_matrix16_bias[32][64];
311 int block_last_index[6]; /* last non zero coefficient in block */
312 /* scantables */
313 ScanTable __align8 intra_scantable;
314 ScanTable intra_h_scantable;
315 ScanTable intra_v_scantable;
316 ScanTable inter_scantable; // if inter == intra then intra should be used to reduce tha cache usage
317 UINT8 idct_permutation[64];
318 int idct_permutation_type;
319 #define FF_NO_IDCT_PERM 1
320 #define FF_LIBMPEG2_IDCT_PERM 2
321 #define FF_SIMPLE_IDCT_PERM 3
322 #define FF_TRANSPOSE_IDCT_PERM 4
323
324 void *opaque; /* private data for the user */
325
326 /* bit rate control */
327 int I_frame_bits; //FIXME used in mpeg12 ...
328 int mb_var_sum; /* sum of MB variance for current frame */
329 int mc_mb_var_sum; /* motion compensated MB variance for current frame */
330 INT64 wanted_bits;
331 INT64 total_bits;
332 int frame_bits; /* bits used for the current frame */
333 RateControlContext rc_context; // contains stuff only accessed in ratecontrol.c
334
335 /* statistics, used for 2-pass encoding */
336 int mv_bits;
337 int header_bits;
338 int i_tex_bits;
339 int p_tex_bits;
340 int i_count;
341 int f_count;
342 int b_count;
343 int skip_count;
344 int misc_bits; // cbp, mb_type
345 int last_bits; //temp var used for calculating the above vars
346
347 /* error concealment / resync */
348 UINT8 *error_status_table; /* table of the error status of each MB */
349 #define VP_START 1 /* current MB is the first after a resync marker */
350 #define AC_ERROR 2
351 #define DC_ERROR 4
352 #define MV_ERROR 8
353 #define AC_END 16
354 #define DC_END 32
355 #define MV_END 64
356 //FIXME some prefix?
357
358 int resync_mb_x; /* x position of last resync marker */
359 int resync_mb_y; /* y position of last resync marker */
360 GetBitContext last_resync_gb; /* used to serach for the next resync marker */
361 int mb_num_left; /* number of MBs left in this video packet (for partitioned Slices only)*/
362 int next_p_frame_damaged; /* set if the next p frame is damaged, to avoid showing trashed b frames */
363 int error_resilience;
364
365 ParseContext parse_context;
366
367 /* H.263 specific */
368 int gob_number;
369 int gob_index;
370
371 /* H.263+ specific */
372 int umvplus;
373 int umvplus_dec;
374 int h263_aic; /* Advanded INTRA Coding (AIC) */
375 int h263_aic_dir; /* AIC direction: 0 = left, 1 = top */
376
377 /* mpeg4 specific */
378 int time_increment_resolution;
379 int time_increment_bits; /* number of bits to represent the fractional part of time */
380 int last_time_base;
381 int time_base; /* time in seconds of last I,P,S Frame */
382 INT64 time; /* time of current frame */
383 INT64 last_non_b_time;
384 UINT16 pp_time; /* time distance between the last 2 p,s,i frames */
385 UINT16 pb_time; /* time distance between the last b and p,s,i frame */
386 UINT16 pp_field_time;
387 UINT16 pb_field_time; /* like above, just for interlaced */
388 int shape;
389 int vol_sprite_usage;
390 int sprite_width;
391 int sprite_height;
392 int sprite_left;
393 int sprite_top;
394 int sprite_brightness_change;
395 int num_sprite_warping_points;
396 int real_sprite_warping_points;
397 int sprite_offset[2][2]; /* sprite offset[isChroma][isMVY] */
398 int sprite_delta[2][2]; /* sprite_delta [isY][isMVY] */
399 int sprite_shift[2]; /* sprite shift [isChroma] */
400 int mcsel;
401 int quant_precision;
402 int quarter_sample; /* 1->qpel, 0->half pel ME/MC */
403 int scalability;
404 int hierachy_type;
405 int enhancement_type;
406 int new_pred;
407 int reduced_res_vop;
408 int aspect_ratio_info;
409 int aspected_width;
410 int aspected_height;
411 int sprite_warping_accuracy;
412 int low_latency_sprite;
413 int data_partitioning; /* data partitioning flag from header */
414 int partitioned_frame; /* is current frame partitioned */
415 int rvlc; /* reversible vlc */
416 int resync_marker; /* could this stream contain resync markers*/
417 int low_delay; /* no reordering needed / has no b-frames */
418 int vo_type;
419 int vol_control_parameters; /* does the stream contain the low_delay flag, used to workaround buggy encoders */
420 PutBitContext tex_pb; /* used for data partitioned VOPs */
421 PutBitContext pb2; /* used for data partitioned VOPs */
422 #define PB_BUFFER_SIZE 1024*256
423 uint8_t *tex_pb_buffer;
424 uint8_t *pb2_buffer;
425 int mpeg_quant;
426 #define CO_LOCATED_TYPE_4MV 1
427 #define CO_LOCATED_TYPE_FIELDMV 2
428 INT8 *co_located_type_table; /* 4mv & field_mv info for next b frame */
429 INT16 (*field_mv_table)[2][2]; /* used for interlaced b frame decoding */
430 INT8 (*field_select_table)[2]; /* wtf, no really another table for interlaced b frames */
431 int t_frame; /* time distance of first I -> B, used for interlaced b frames */
432 int padding_bug_score; /* used to detect the VERY common padding bug in MPEG4 */
433
434 /* divx specific, used to workaround (many) bugs in divx5 */
435 int divx_version;
436 int divx_build;
437 #define BITSTREAM_BUFFER_SIZE 1024*256
438 UINT8 *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
439 int bitstream_buffer_size;
440
441 int xvid_build;
442
443 /* lavc specific stuff, used to workaround bugs in libavcodec */
444 int ffmpeg_version;
445 int lavc_build;
446
447 /* RV10 specific */
448 int rv10_version; /* RV10 version: 0 or 3 */
449 int rv10_first_dc_coded[3];
450
451 /* MJPEG specific */
452 struct MJpegContext *mjpeg_ctx;
453 int mjpeg_vsample[3]; /* vertical sampling factors, default = {2, 1, 1} */
454 int mjpeg_hsample[3]; /* horizontal sampling factors, default = {2, 1, 1} */
455 int mjpeg_write_tables; /* do we want to have quantisation- and
456 huffmantables in the jpeg file ? */
457 int mjpeg_data_only_frames; /* frames only with SOI, SOS and EOI markers */
458
459 /* MSMPEG4 specific */
460 int mv_table_index;
461 int rl_table_index;
462 int rl_chroma_table_index;
463 int dc_table_index;
464 int use_skip_mb_code;
465 int slice_height; /* in macroblocks */
466 int first_slice_line; /* used in mpeg4 too to handle resync markers */
467 int flipflop_rounding;
468 int msmpeg4_version; /* 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8*/
469 int per_mb_rl_table;
470 int esc3_level_length;
471 int esc3_run_length;
472 /* [mb_intra][isChroma][level][run][last] */
473 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
474 int inter_intra_pred;
475
476 /* decompression specific */
477 GetBitContext gb;
478
479 /* MPEG2 specific - I wish I had not to support this mess. */
480 int progressive_sequence;
481 int mpeg_f_code[2][2];
482 int picture_structure;
483 /* picture type */
484 #define PICT_TOP_FIELD 1
485 #define PICT_BOTTOM_FIELD 2
486 #define PICT_FRAME 3
487
488 int intra_dc_precision;
489 int frame_pred_frame_dct;
490 int top_field_first;
491 int concealment_motion_vectors;
492 int q_scale_type;
493 int intra_vlc_format;
494 int alternate_scan;
495 int repeat_first_field;
496 int chroma_420_type;
497 int progressive_frame;
498 int mpeg2;
499 int full_pel[2];
500 int interlaced_dct;
501 int last_qscale;
502 int first_slice;
503
504 /* RTP specific */
505 /* These are explained on avcodec.h */
506 int rtp_mode;
507 int rtp_payload_size;
508 void (*rtp_callback)(void *data, int size, int packet_number);
509 UINT8 *ptr_lastgob;
510 UINT8 *ptr_last_mb_line;
511 UINT32 mb_line_avgsize;
512
513 DCTELEM (*block)[64]; /* points to one of the following blocks */
514 DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
515 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
516 #define SLICE_OK 0
517 #define SLICE_ERROR -1
518 #define SLICE_END -2 //end marker found
519 #define SLICE_NOEND -3 //no end marker or error found but mb count exceeded
520
521 void (*dct_unquantize_mpeg1)(struct MpegEncContext *s,
522 DCTELEM *block, int n, int qscale);
523 void (*dct_unquantize_mpeg2)(struct MpegEncContext *s,
524 DCTELEM *block, int n, int qscale);
525 void (*dct_unquantize_h263)(struct MpegEncContext *s,
526 DCTELEM *block, int n, int qscale);
527 void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
528 DCTELEM *block, int n, int qscale);
529 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
530 void (*fdct)(DCTELEM *block/* align 16*/);
531 void (*idct_put)(UINT8 *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
532 void (*idct_add)(UINT8 *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
533 } MpegEncContext;
534
535
536 int DCT_common_init(MpegEncContext *s);
537 int MPV_common_init(MpegEncContext *s);
538 void MPV_common_end(MpegEncContext *s);
539 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
540 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
541 void MPV_frame_end(MpegEncContext *s);
542 #ifdef HAVE_MMX
543 void MPV_common_init_mmx(MpegEncContext *s);
544 #endif
545 #ifdef ARCH_ALPHA
546 void MPV_common_init_axp(MpegEncContext *s);
547 #endif
548 #ifdef HAVE_MLIB
549 void MPV_common_init_mlib(MpegEncContext *s);
550 #endif
551 #ifdef HAVE_MMI
552 void MPV_common_init_mmi(MpegEncContext *s);
553 #endif
554 #ifdef ARCH_ARMV4L
555 void MPV_common_init_armv4l(MpegEncContext *s);
556 #endif
557 #ifdef ARCH_POWERPC
558 void MPV_common_init_ppc(MpegEncContext *s);
559 #endif
560 extern void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w);
561 void ff_conceal_past_errors(MpegEncContext *s, int conceal_all);
562 void ff_copy_bits(PutBitContext *pb, UINT8 *src, int length);
563 void ff_clean_intra_table_entries(MpegEncContext *s);
564 void ff_init_scantable(MpegEncContext *s, ScanTable *st, const UINT8 *src_scantable);
565 void ff_error_resilience(MpegEncContext *s);
566 void ff_draw_horiz_band(MpegEncContext *s);
567
568 extern int ff_bit_exact;
569
570 static inline void ff_init_block_index(MpegEncContext *s){
571 s->block_index[0]= s->block_wrap[0]*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
572 s->block_index[1]= s->block_wrap[0]*(s->mb_y*2 + 1) + s->mb_x*2;
573 s->block_index[2]= s->block_wrap[0]*(s->mb_y*2 + 2) - 1 + s->mb_x*2;
574 s->block_index[3]= s->block_wrap[0]*(s->mb_y*2 + 2) + s->mb_x*2;
575 s->block_index[4]= s->block_wrap[4]*(s->mb_y + 1) + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
576 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;
577 }
578
579 static inline void ff_update_block_index(MpegEncContext *s){
580 s->block_index[0]+=2;
581 s->block_index[1]+=2;
582 s->block_index[2]+=2;
583 s->block_index[3]+=2;
584 s->block_index[4]++;
585 s->block_index[5]++;
586 }
587
588
589 /* motion_est.c */
590 void ff_estimate_p_frame_motion(MpegEncContext * s,
591 int mb_x, int mb_y);
592 void ff_estimate_b_frame_motion(MpegEncContext * s,
593 int mb_x, int mb_y);
594 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
595 void ff_fix_long_p_mvs(MpegEncContext * s);
596 void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
597
598
599 /* mpeg12.c */
600 extern const INT16 ff_mpeg1_default_intra_matrix[64];
601 extern const INT16 ff_mpeg1_default_non_intra_matrix[64];
602 extern UINT8 ff_mpeg1_dc_scale_table[128];
603
604 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
605 void mpeg1_encode_mb(MpegEncContext *s,
606 DCTELEM block[6][64],
607 int motion_x, int motion_y);
608 void ff_mpeg1_encode_init(MpegEncContext *s);
609
610
611 /* h263enc.c */
612 typedef struct RLTable {
613 int n; /* number of entries of table_vlc minus 1 */
614 int last; /* number of values for last = 0 */
615 const UINT16 (*table_vlc)[2];
616 const INT8 *table_run;
617 const INT8 *table_level;
618 UINT8 *index_run[2]; /* encoding only */
619 INT8 *max_level[2]; /* encoding & decoding */
620 INT8 *max_run[2]; /* encoding & decoding */
621 VLC vlc; /* decoding only deprected FIXME remove*/
622 RL_VLC_ELEM *rl_vlc[32]; /* decoding only */
623 } RLTable;
624
625 void init_rl(RLTable *rl);
626 void init_vlc_rl(RLTable *rl);
627
628 static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
629 {
630 int index;
631 index = rl->index_run[last][run];
632 if (index >= rl->n)
633 return rl->n;
634 if (level > rl->max_level[last][run])
635 return rl->n;
636 return index + level - 1;
637 }
638
639 extern UINT8 ff_mpeg4_y_dc_scale_table[32];
640 extern UINT8 ff_mpeg4_c_dc_scale_table[32];
641 extern const INT16 ff_mpeg4_default_intra_matrix[64];
642 extern const INT16 ff_mpeg4_default_non_intra_matrix[64];
643 void h263_encode_mb(MpegEncContext *s,
644 DCTELEM block[6][64],
645 int motion_x, int motion_y);
646 void mpeg4_encode_mb(MpegEncContext *s,
647 DCTELEM block[6][64],
648 int motion_x, int motion_y);
649 void h263_encode_picture_header(MpegEncContext *s, int picture_number);
650 int h263_encode_gob_header(MpegEncContext * s, int mb_line);
651 INT16 *h263_pred_motion(MpegEncContext * s, int block,
652 int *px, int *py);
653 void mpeg4_pred_ac(MpegEncContext * s, INT16 *block, int n,
654 int dir);
655 void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
656 void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
657 void h263_encode_init(MpegEncContext *s);
658 void h263_decode_init_vlc(MpegEncContext *s);
659 int h263_decode_picture_header(MpegEncContext *s);
660 int ff_h263_decode_gob_header(MpegEncContext *s);
661 int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
662
663
664 int intel_h263_decode_picture_header(MpegEncContext *s);
665 int ff_h263_decode_mb(MpegEncContext *s,
666 DCTELEM block[6][64]);
667 int h263_get_picture_format(int width, int height);
668 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
669 void ff_mpeg4_clean_buffers(MpegEncContext *s);
670 void ff_mpeg4_stuffing(PutBitContext * pbc);
671 void ff_mpeg4_init_partitions(MpegEncContext *s);
672 void ff_mpeg4_merge_partitions(MpegEncContext *s);
673 void ff_clean_mpeg4_qscales(MpegEncContext *s);
674 void ff_clean_h263_qscales(MpegEncContext *s);
675 int ff_mpeg4_decode_partitions(MpegEncContext *s);
676 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
677 int ff_h263_resync(MpegEncContext *s);
678 int ff_h263_get_gob_height(MpegEncContext *s);
679
680
681 /* rv10.c */
682 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
683 int rv_decode_dc(MpegEncContext *s, int n);
684
685
686 /* msmpeg4.c */
687 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
688 void msmpeg4_encode_ext_header(MpegEncContext * s);
689 void msmpeg4_encode_mb(MpegEncContext * s,
690 DCTELEM block[6][64],
691 int motion_x, int motion_y);
692 int msmpeg4_decode_picture_header(MpegEncContext * s);
693 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
694 int ff_msmpeg4_decode_init(MpegEncContext *s);
695 void ff_msmpeg4_encode_init(MpegEncContext *s);
696
697
698 /* mjpegenc.c */
699 int mjpeg_init(MpegEncContext *s);
700 void mjpeg_close(MpegEncContext *s);
701 void mjpeg_encode_mb(MpegEncContext *s,
702 DCTELEM block[6][64]);
703 void mjpeg_picture_header(MpegEncContext *s);
704 void mjpeg_picture_trailer(MpegEncContext *s);
705
706
707 /* rate control */
708 int ff_rate_control_init(MpegEncContext *s);
709 float ff_rate_estimate_qscale(MpegEncContext *s);
710 void ff_write_pass1_stats(MpegEncContext *s);
711 void ff_rate_control_uninit(MpegEncContext *s);
712 double ff_eval(char *s, double *const_value, char **const_name,
713 double (**func1)(void *, double), char **func1_name,
714 double (**func2)(void *, double, double), char **func2_name,
715 void *opaque);
716
717
718 #endif /* AVCODEC_MPEGVIDEO_H */