2 * Generic DCT based hybrid video encoder
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
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.
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.
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
20 #ifndef AVCODEC_MPEGVIDEO_H
21 #define AVCODEC_MPEGVIDEO_H
23 #define FRAME_SKIPED 100 // return value for header parsers if frame is not coded
33 #define MPEG_BUF_SIZE (16 * 1024)
35 #define QMAT_SHIFT_MMX 16
41 #define MAX_PICTURE_COUNT 7
43 #define ME_MAP_SIZE 64
44 #define ME_MAP_SHIFT 3
45 #define ME_MAP_MV_BITS 11
47 /* run length table */
51 typedef struct Predictor{
57 typedef struct RateControlEntry{
74 typedef struct RateControlContext{
76 int num_entries; /* number of RateControlEntries */
77 RateControlEntry *entry;
78 int buffer_index; /* amount of bits in the video/audio buffer */
80 double short_term_qsum; /* sum of recent qscales */
81 double short_term_qcount; /* count of recent qscales */
82 double pass1_rc_eq_output_sum;/* sum of the output of the rc equation, this is used for normalization */
83 double pass1_wanted_bits; /* bits which should have been outputed by the pass1 code (including complexity init) */
85 double last_qscale_for[5]; /* last qscale for a specific pict type, used for max_diff & ipb factor stuff */
86 int last_mc_mb_var_sum;
90 UINT64 mv_bits_sum[5];
93 int last_non_b_pict_type;
97 typedef struct ScanTable{
98 const UINT8 *scantable;
100 UINT8 raster_end[64];
102 /* Used by dct_quantise_alitvec to find last-non-zero */
103 UINT8 __align8 inverse[64];
107 typedef struct Picture{
110 int mb_var_sum; /* sum of MB variance for current frame */
111 int mc_mb_var_sum; /* motion compensated MB variance for current frame */
112 uint16_t *mb_var; /* Table for MB variances */
113 uint16_t *mc_mb_var; /* Table for motion compensated MB variances */
114 uint8_t *mb_mean; /* Table for MB luminance */
117 typedef struct ParseContext{
123 int frame_start_found;
126 typedef struct MpegEncContext {
127 struct AVCodecContext *avctx;
128 /* the following parameters must be initialized before encoding */
129 int width, height; /* picture size. must be a multiple of 16 */
131 int frame_rate; /* number of frames per second */
132 int intra_only; /* if true, only intra pictures are generated */
133 int bit_rate; /* wanted bit rate */
134 int bit_rate_tolerance; /* amount of +- bits (>0)*/
135 enum OutputFormat out_format; /* output format */
136 int h263_pred; /* use mpeg4/h263 ac/dc predictions */
138 /* the following codec id fields are deprecated in favor of codec_id */
139 int h263_plus; /* h263 plus headers */
140 int h263_rv10; /* use RV10 variation for H263 */
141 int h263_msmpeg4; /* generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)*/
142 int h263_intel; /* use I263 intel h263 header */
144 int codec_id; /* see CODEC_ID_xxx */
145 int fixed_qscale; /* fixed qscale if non zero */
146 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0) */
147 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
148 int qmin; /* min qscale */
149 int qmax; /* max qscale */
150 int max_qdiff; /* max qscale difference between frames */
151 int encoding; /* true if we are encoding (vs decoding) */
152 int flags; /* AVCodecContext.flags (HQ, MV4, ...) */
153 int max_b_frames; /* max number of b-frames for encoding */
154 int b_frame_strategy;
155 int luma_elim_threshold;
156 int chroma_elim_threshold;
157 int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
158 int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
159 /* the following fields are managed internally by the encoder */
164 /* sequence parameters */
165 int context_initialized;
166 int input_picture_number;
168 int picture_in_gop_number; /* 0-> first pic in gop, ... */
169 int b_frames_since_non_b; /* used for encoding, relative to not yet reordered input */
170 int mb_width, mb_height; /* number of MBs horizontally & vertically */
171 int h_edge_pos, v_edge_pos;/* horizontal / vertical position of the right/bottom edge (pixel replicateion)*/
172 int mb_num; /* number of MBs of a picture */
173 int linesize; /* line size, in bytes, may be different from width */
174 int uvlinesize; /* line size, for chroma in bytes, may be different from width */
175 Picture picture[MAX_PICTURE_COUNT]; /* main picture buffer */
176 Picture *input_picture[MAX_PICTURE_COUNT]; /* next pictures on display order for encoding*/
177 Picture *reordered_input_picture[MAX_PICTURE_COUNT]; /* pointer to the next pictures in codedorder for encoding*/
178 Picture last_picture; /* previous picture */
179 Picture next_picture; /* previous picture (for bidir pred) */
180 Picture new_picture; /* source picture for encoding */
181 Picture current_picture; /* buffer to store the decompressed current picture */
182 int num_available_buffers; /* is 0 at the start & after seeking, after the first I frame its 1 after next I/P 2 */
183 int last_dc[3]; /* last DC values for MPEG1 */
184 INT16 *dc_val[3]; /* used for mpeg4 DC prediction, all 3 arrays must be continuous */
185 int y_dc_scale, c_dc_scale;
186 UINT8 *y_dc_scale_table; /* qscale -> y_dc_scale table */
187 UINT8 *c_dc_scale_table; /* qscale -> c_dc_scale table */
188 UINT8 *coded_block; /* used for coded block pattern prediction (msmpeg4v3, wmv1)*/
189 INT16 (*ac_val[3])[16]; /* used for for mpeg4 AC prediction, all 3 arrays must be continuous */
191 int mb_skiped; /* MUST BE SET only during DECODING */
192 UINT8 *mbskip_table; /* used to avoid copy if macroblock skipped (for black regions for example)
193 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
194 UINT8 *mbintra_table; /* used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding */
195 UINT8 *cbp_table; /* used to store cbp, ac_pred for partitioned decoding */
196 UINT8 *pred_dir_table; /* used to store pred_dir for partitioned decoding */
197 UINT8 *edge_emu_buffer;
200 float frame_qscale; /* qscale from the frame level rc FIXME remove*/
201 int adaptive_quant; /* use adaptive quantization */
202 int dquant; /* qscale difference to prev qscale */
203 int pict_type; /* I_TYPE, P_TYPE, B_TYPE, ... */
205 int last_non_b_pict_type; /* used for mpeg4 gmc b-frames & ratecontrol */
206 int frame_rate_index;
207 /* motion compensation */
209 int h263_long_vectors; /* use horrible h263v1 long vector mode */
211 DSPContext dsp; /* pointers for accelerated dsp fucntions */
212 int f_code; /* forward MV resolution */
213 int b_code; /* backward MV resolution for B Frames (mpeg4) */
214 INT16 (*motion_val)[2]; /* used for MV prediction (4MV per MB) */
215 INT16 (*p_mv_table)[2]; /* MV table (1MV per MB) p-frame encoding */
216 INT16 (*b_forw_mv_table)[2]; /* MV table (1MV per MB) forward mode b-frame encoding */
217 INT16 (*b_back_mv_table)[2]; /* MV table (1MV per MB) backward mode b-frame encoding */
218 INT16 (*b_bidir_forw_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
219 INT16 (*b_bidir_back_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
220 INT16 (*b_direct_forw_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
221 INT16 (*b_direct_back_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
222 INT16 (*b_direct_mv_table)[2]; /* MV table (1MV per MB) direct mode b-frame encoding */
223 int me_method; /* ME algorithm */
224 uint8_t *me_scratchpad; /* data area for the me algo, so that the ME doesnt need to malloc/free */
225 uint32_t *me_map; /* map to avoid duplicate evaluations */
226 uint16_t *me_score_map; /* map to store the SADs */
227 int me_map_generation;
228 int skip_me; /* set if ME is skiped for the current MB */
229 int scene_change_score;
231 #define MV_DIR_BACKWARD 1
232 #define MV_DIR_FORWARD 2
233 #define MV_DIRECT 4 // bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
235 #define MV_TYPE_16X16 0 /* 1 vector for the whole mb */
236 #define MV_TYPE_8X8 1 /* 4 vectors (h263, mpeg4 4MV) */
237 #define MV_TYPE_16X8 2 /* 2 vectors, one per 16x8 block */
238 #define MV_TYPE_FIELD 3 /* 2 vectors, one per field */
239 #define MV_TYPE_DMV 4 /* 2 vectors, special mpeg2 Dual Prime Vectors */
240 /* motion vectors for a macroblock
241 first coordinate : 0 = forward 1 = backward
242 second " : depend on type
243 third " : 0 = x, 1 = y
246 int field_select[2][2];
247 int last_mv[2][2][2]; /* last MV, used for MV prediction in MPEG1 & B-frame MPEG4 */
248 UINT16 (*mv_penalty)[MAX_MV*2+1]; /* amount of bits needed to encode a MV, used for ME */
249 UINT8 *fcode_tab; /* smallest fcode needed for each MV */
252 int no_rounding; /* apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
253 for b-frames rounding mode is allways 0 */
255 int hurry_up; /* when set to 1 during decoding, b frames will be skiped
256 when set to 2 idct/dequant will be skipped too */
258 /* macroblock layer */
262 UINT8 *mb_type; /* Table for MB type */
263 #define MB_TYPE_INTRA 0x01
264 #define MB_TYPE_INTER 0x02
265 #define MB_TYPE_INTER4V 0x04
266 #define MB_TYPE_SKIPED 0x08
267 #define MB_TYPE_GMC 0x10
269 #define MB_TYPE_DIRECT 0x10
270 #define MB_TYPE_FORWARD 0x20
271 #define MB_TYPE_BACKWARD 0x40
272 #define MB_TYPE_BIDIR 0x80
274 int block_index[6]; /* index to current MB in block based arrays with edges*/
277 /* matrix transmitted in the bitstream */
278 UINT16 intra_matrix[64];
279 UINT16 chroma_intra_matrix[64];
280 UINT16 inter_matrix[64];
281 UINT16 chroma_inter_matrix[64];
282 #define QUANT_BIAS_SHIFT 4
283 int intra_quant_bias; /* bias for the quantizer */
284 int inter_quant_bias; /* bias for the quantizer */
285 int min_qcoeff; /* minimum encodable coefficient */
286 int max_qcoeff; /* maximum encodable coefficient */
287 /* precomputed matrix (combine qscale and DCT renorm) */
288 int __align8 q_intra_matrix[32][64];
289 int __align8 q_inter_matrix[32][64];
290 /* identical to the above but for MMX & these are not permutated */
291 UINT16 __align8 q_intra_matrix16[32][64];
292 UINT16 __align8 q_inter_matrix16[32][64];
293 UINT16 __align8 q_intra_matrix16_bias[32][64];
294 UINT16 __align8 q_inter_matrix16_bias[32][64];
295 int block_last_index[6]; /* last non zero coefficient in block */
297 ScanTable __align8 intra_scantable;
298 ScanTable intra_h_scantable;
299 ScanTable intra_v_scantable;
300 ScanTable inter_scantable; // if inter == intra then intra should be used to reduce tha cache usage
301 UINT8 idct_permutation[64];
302 int idct_permutation_type;
303 #define FF_NO_IDCT_PERM 1
304 #define FF_LIBMPEG2_IDCT_PERM 2
305 #define FF_SIMPLE_IDCT_PERM 3
306 #define FF_TRANSPOSE_IDCT_PERM 4
308 void *opaque; /* private data for the user */
310 /* bit rate control */
311 int I_frame_bits; //FIXME used in mpeg12 ...
314 int frame_bits; /* bits used for the current frame */
315 RateControlContext rc_context; // contains stuff only accessed in ratecontrol.c
317 /* statistics, used for 2-pass encoding */
326 int misc_bits; // cbp, mb_type
327 int last_bits; //temp var used for calculating the above vars
329 /* error concealment / resync */
330 UINT8 *error_status_table; /* table of the error status of each MB */
331 #define VP_START 1 /* current MB is the first after a resync marker */
340 int resync_mb_x; /* x position of last resync marker */
341 int resync_mb_y; /* y position of last resync marker */
342 GetBitContext last_resync_gb; /* used to serach for the next resync marker */
343 int mb_num_left; /* number of MBs left in this video packet (for partitioned Slices only)*/
344 int next_p_frame_damaged; /* set if the next p frame is damaged, to avoid showing trashed b frames */
345 int error_resilience;
347 ParseContext parse_context;
353 /* H.263+ specific */
356 int h263_aic; /* Advanded INTRA Coding (AIC) */
357 int h263_aic_dir; /* AIC direction: 0 = left, 1 = top */
360 int time_increment_resolution;
361 int time_increment_bits; /* number of bits to represent the fractional part of time */
363 int time_base; /* time in seconds of last I,P,S Frame */
364 INT64 time; /* time of current frame */
365 INT64 last_non_b_time;
366 UINT16 pp_time; /* time distance between the last 2 p,s,i frames */
367 UINT16 pb_time; /* time distance between the last b and p,s,i frame */
368 UINT16 pp_field_time;
369 UINT16 pb_field_time; /* like above, just for interlaced */
371 int vol_sprite_usage;
376 int sprite_brightness_change;
377 int num_sprite_warping_points;
378 int real_sprite_warping_points;
379 int sprite_offset[2][2]; /* sprite offset[isChroma][isMVY] */
380 int sprite_delta[2][2]; /* sprite_delta [isY][isMVY] */
381 int sprite_shift[2]; /* sprite shift [isChroma] */
384 int quarter_sample; /* 1->qpel, 0->half pel ME/MC */
387 int enhancement_type;
390 int aspect_ratio_info;
393 int sprite_warping_accuracy;
394 int low_latency_sprite;
395 int data_partitioning; /* data partitioning flag from header */
396 int partitioned_frame; /* is current frame partitioned */
397 int rvlc; /* reversible vlc */
398 int resync_marker; /* could this stream contain resync markers*/
399 int low_delay; /* no reordering needed / has no b-frames */
401 int vol_control_parameters; /* does the stream contain the low_delay flag, used to workaround buggy encoders */
402 PutBitContext tex_pb; /* used for data partitioned VOPs */
403 PutBitContext pb2; /* used for data partitioned VOPs */
404 #define PB_BUFFER_SIZE 1024*256
405 uint8_t *tex_pb_buffer;
408 #define CO_LOCATED_TYPE_4MV 1
409 #define CO_LOCATED_TYPE_FIELDMV 2
410 INT8 *co_located_type_table; /* 4mv & field_mv info for next b frame */
411 INT16 (*field_mv_table)[2][2]; /* used for interlaced b frame decoding */
412 INT8 (*field_select_table)[2]; /* wtf, no really another table for interlaced b frames */
413 int t_frame; /* time distance of first I -> B, used for interlaced b frames */
414 int padding_bug_score; /* used to detect the VERY common padding bug in MPEG4 */
416 /* divx specific, used to workaround (many) bugs in divx5 */
419 #define BITSTREAM_BUFFER_SIZE 1024*256
420 UINT8 *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
421 int bitstream_buffer_size;
425 /* lavc specific stuff, used to workaround bugs in libavcodec */
430 int rv10_version; /* RV10 version: 0 or 3 */
431 int rv10_first_dc_coded[3];
434 struct MJpegContext *mjpeg_ctx;
435 int mjpeg_vsample[3]; /* vertical sampling factors, default = {2, 1, 1} */
436 int mjpeg_hsample[3]; /* horizontal sampling factors, default = {2, 1, 1} */
437 int mjpeg_write_tables; /* do we want to have quantisation- and
438 huffmantables in the jpeg file ? */
439 int mjpeg_data_only_frames; /* frames only with SOI, SOS and EOI markers */
441 /* MSMPEG4 specific */
444 int rl_chroma_table_index;
446 int use_skip_mb_code;
447 int slice_height; /* in macroblocks */
448 int first_slice_line; /* used in mpeg4 too to handle resync markers */
449 int flipflop_rounding;
450 int msmpeg4_version; /* 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8*/
452 int esc3_level_length;
454 /* [mb_intra][isChroma][level][run][last] */
455 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
456 int inter_intra_pred;
458 /* decompression specific */
462 int fake_picture_number; /* picture number at the bitstream frame rate */
463 int gop_picture_number; /* index of the first picture of a GOP based on fake_pic_num & mpeg1 specific */
465 /* MPEG2 specific - I wish I had not to support this mess. */
466 int progressive_sequence;
467 int mpeg_f_code[2][2];
468 int picture_structure;
470 #define PICT_TOP_FIELD 1
471 #define PICT_BOTTOM_FIELD 2
474 int intra_dc_precision;
475 int frame_pred_frame_dct;
477 int concealment_motion_vectors;
479 int intra_vlc_format;
481 int repeat_first_field;
483 int progressive_frame;
490 /* These are explained on avcodec.h */
492 int rtp_payload_size;
493 void (*rtp_callback)(void *data, int size, int packet_number);
495 UINT8 *ptr_last_mb_line;
496 UINT32 mb_line_avgsize;
498 DCTELEM (*block)[64]; /* points to one of the following blocks */
499 DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
500 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
502 #define SLICE_ERROR -1
503 #define SLICE_END -2 //end marker found
504 #define SLICE_NOEND -3 //no end marker or error found but mb count exceeded
506 void (*dct_unquantize_mpeg1)(struct MpegEncContext *s,
507 DCTELEM *block, int n, int qscale);
508 void (*dct_unquantize_mpeg2)(struct MpegEncContext *s,
509 DCTELEM *block, int n, int qscale);
510 void (*dct_unquantize_h263)(struct MpegEncContext *s,
511 DCTELEM *block, int n, int qscale);
512 void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
513 DCTELEM *block, int n, int qscale);
514 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
515 void (*fdct)(DCTELEM *block/* align 16*/);
516 void (*idct_put)(UINT8 *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
517 void (*idct_add)(UINT8 *dest/*align 8*/, int line_size, DCTELEM *block/*align 16*/);
521 int DCT_common_init(MpegEncContext *s);
522 int MPV_common_init(MpegEncContext *s);
523 void MPV_common_end(MpegEncContext *s);
524 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
525 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
526 void MPV_frame_end(MpegEncContext *s);
528 void MPV_common_init_mmx(MpegEncContext *s);
531 void MPV_common_init_axp(MpegEncContext *s);
534 void MPV_common_init_mlib(MpegEncContext *s);
537 void MPV_common_init_mmi(MpegEncContext *s);
540 void MPV_common_init_armv4l(MpegEncContext *s);
543 void MPV_common_init_ppc(MpegEncContext *s);
545 extern void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w);
546 void ff_conceal_past_errors(MpegEncContext *s, int conceal_all);
547 void ff_copy_bits(PutBitContext *pb, UINT8 *src, int length);
548 void ff_clean_intra_table_entries(MpegEncContext *s);
549 void ff_init_scantable(MpegEncContext *s, ScanTable *st, const UINT8 *src_scantable);
550 void ff_error_resilience(MpegEncContext *s);
551 void ff_draw_horiz_band(MpegEncContext *s);
553 extern int ff_bit_exact;
555 static inline void ff_init_block_index(MpegEncContext *s){
556 s->block_index[0]= s->block_wrap[0]*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
557 s->block_index[1]= s->block_wrap[0]*(s->mb_y*2 + 1) + s->mb_x*2;
558 s->block_index[2]= s->block_wrap[0]*(s->mb_y*2 + 2) - 1 + s->mb_x*2;
559 s->block_index[3]= s->block_wrap[0]*(s->mb_y*2 + 2) + s->mb_x*2;
560 s->block_index[4]= s->block_wrap[4]*(s->mb_y + 1) + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
561 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;
564 static inline void ff_update_block_index(MpegEncContext *s){
565 s->block_index[0]+=2;
566 s->block_index[1]+=2;
567 s->block_index[2]+=2;
568 s->block_index[3]+=2;
575 void ff_estimate_p_frame_motion(MpegEncContext * s,
577 void ff_estimate_b_frame_motion(MpegEncContext * s,
579 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
580 void ff_fix_long_p_mvs(MpegEncContext * s);
581 void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
585 extern const INT16 ff_mpeg1_default_intra_matrix[64];
586 extern const INT16 ff_mpeg1_default_non_intra_matrix[64];
587 extern UINT8 ff_mpeg1_dc_scale_table[128];
589 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
590 void mpeg1_encode_mb(MpegEncContext *s,
591 DCTELEM block[6][64],
592 int motion_x, int motion_y);
593 void ff_mpeg1_encode_init(MpegEncContext *s);
597 typedef struct RLTable {
598 int n; /* number of entries of table_vlc minus 1 */
599 int last; /* number of values for last = 0 */
600 const UINT16 (*table_vlc)[2];
601 const INT8 *table_run;
602 const INT8 *table_level;
603 UINT8 *index_run[2]; /* encoding only */
604 INT8 *max_level[2]; /* encoding & decoding */
605 INT8 *max_run[2]; /* encoding & decoding */
606 VLC vlc; /* decoding only deprected FIXME remove*/
607 RL_VLC_ELEM *rl_vlc[32]; /* decoding only */
610 void init_rl(RLTable *rl);
611 void init_vlc_rl(RLTable *rl);
613 static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
616 index = rl->index_run[last][run];
619 if (level > rl->max_level[last][run])
621 return index + level - 1;
624 extern UINT8 ff_mpeg4_y_dc_scale_table[32];
625 extern UINT8 ff_mpeg4_c_dc_scale_table[32];
626 extern const INT16 ff_mpeg4_default_intra_matrix[64];
627 extern const INT16 ff_mpeg4_default_non_intra_matrix[64];
628 void h263_encode_mb(MpegEncContext *s,
629 DCTELEM block[6][64],
630 int motion_x, int motion_y);
631 void mpeg4_encode_mb(MpegEncContext *s,
632 DCTELEM block[6][64],
633 int motion_x, int motion_y);
634 void h263_encode_picture_header(MpegEncContext *s, int picture_number);
635 int h263_encode_gob_header(MpegEncContext * s, int mb_line);
636 INT16 *h263_pred_motion(MpegEncContext * s, int block,
638 void mpeg4_pred_ac(MpegEncContext * s, INT16 *block, int n,
640 void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
641 void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
642 void h263_encode_init(MpegEncContext *s);
643 void h263_decode_init_vlc(MpegEncContext *s);
644 int h263_decode_picture_header(MpegEncContext *s);
645 int ff_h263_decode_gob_header(MpegEncContext *s);
646 int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
649 int intel_h263_decode_picture_header(MpegEncContext *s);
650 int ff_h263_decode_mb(MpegEncContext *s,
651 DCTELEM block[6][64]);
652 int h263_get_picture_format(int width, int height);
653 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
654 void ff_mpeg4_clean_buffers(MpegEncContext *s);
655 void ff_mpeg4_stuffing(PutBitContext * pbc);
656 void ff_mpeg4_init_partitions(MpegEncContext *s);
657 void ff_mpeg4_merge_partitions(MpegEncContext *s);
658 void ff_clean_mpeg4_qscales(MpegEncContext *s);
659 void ff_clean_h263_qscales(MpegEncContext *s);
660 int ff_mpeg4_decode_partitions(MpegEncContext *s);
661 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
662 int ff_h263_resync(MpegEncContext *s);
663 int ff_h263_get_gob_height(MpegEncContext *s);
667 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
668 int rv_decode_dc(MpegEncContext *s, int n);
672 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
673 void msmpeg4_encode_ext_header(MpegEncContext * s);
674 void msmpeg4_encode_mb(MpegEncContext * s,
675 DCTELEM block[6][64],
676 int motion_x, int motion_y);
677 int msmpeg4_decode_picture_header(MpegEncContext * s);
678 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
679 int ff_msmpeg4_decode_init(MpegEncContext *s);
680 void ff_msmpeg4_encode_init(MpegEncContext *s);
684 int mjpeg_init(MpegEncContext *s);
685 void mjpeg_close(MpegEncContext *s);
686 void mjpeg_encode_mb(MpegEncContext *s,
687 DCTELEM block[6][64]);
688 void mjpeg_picture_header(MpegEncContext *s);
689 void mjpeg_picture_trailer(MpegEncContext *s);
693 int ff_rate_control_init(MpegEncContext *s);
694 float ff_rate_estimate_qscale(MpegEncContext *s);
695 void ff_write_pass1_stats(MpegEncContext *s);
696 void ff_rate_control_uninit(MpegEncContext *s);
697 double ff_eval(char *s, double *const_value, char **const_name,
698 double (**func1)(void *, double), char **func1_name,
699 double (**func2)(void *, double, double), char **func2_name,
703 #endif /* AVCODEC_MPEGVIDEO_H */