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
31 #define MPEG_BUF_SIZE (16 * 1024)
33 #define QMAT_SHIFT_MMX 16
38 #define REORDER_BUFFER_SIZE (FF_MAX_B_FRAMES+2)
40 #define ME_MAP_SIZE 64
41 #define ME_MAP_SHIFT 3
42 #define ME_MAP_MV_BITS 11
44 /* run length table */
48 typedef struct Predictor{
54 typedef struct RateControlEntry{
71 typedef struct RateControlContext{
73 int num_entries; /* number of RateControlEntries */
74 RateControlEntry *entry;
75 int buffer_index; /* amount of bits in the video/audio buffer */
77 double short_term_qsum; /* sum of recent qscales */
78 double short_term_qcount; /* count of recent qscales */
79 double pass1_bits; /* bits outputted by the pass1 code (including complexity init) */
80 double pass1_wanted_bits; /* bits which should have been outputed by the pass1 code (including complexity init) */
82 double last_qscale_for[5]; /* last qscale for a specific pict type */
83 double next_non_b_qscale;
85 int last_mc_mb_var_sum;
89 UINT64 mv_bits_sum[5];
94 typedef struct ReorderBuffer{
100 int picture_in_gop_number;
103 typedef struct MpegEncContext {
104 struct AVCodecContext *avctx;
105 /* the following parameters must be initialized before encoding */
106 int width, height; /* picture size. must be a multiple of 16 */
108 int frame_rate; /* number of frames per second */
109 int intra_only; /* if true, only intra pictures are generated */
110 int bit_rate; /* wanted bit rate */
111 int bit_rate_tolerance; /* amount of +- bits (>0)*/
112 enum OutputFormat out_format; /* output format */
113 int h263_pred; /* use mpeg4/h263 ac/dc predictions */
115 /* the following codec id fields are deprecated in favor of codec_id */
116 int h263_plus; /* h263 plus headers */
117 int h263_rv10; /* use RV10 variation for H263 */
118 int h263_msmpeg4; /* generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)*/
119 int h263_intel; /* use I263 intel h263 header */
121 int codec_id; /* see CODEC_ID_xxx */
122 int fixed_qscale; /* fixed qscale if non zero */
123 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0) */
124 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
125 int qmin; /* min qscale */
126 int qmax; /* max qscale */
127 int max_qdiff; /* max qscale difference between frames */
128 int encoding; /* true if we are encoding (vs decoding) */
129 int flags; /* AVCodecContext.flags (HQ, MV4, ...) */
130 int force_input_type;/* 0= no force, otherwise I_TYPE, P_TYPE, ... */
131 int max_b_frames; /* max number of b-frames for encoding */
132 int b_frame_strategy;
133 int luma_elim_threshold;
134 int chroma_elim_threshold;
135 int strict_std_compliance; /* strictly follow the std (MPEG4, ...) */
136 int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
137 /* the following fields are managed internally by the encoder */
142 /* sequence parameters */
143 int context_initialized;
144 int input_picture_number;
145 int input_picture_in_gop_number; /* 0-> first pic in gop, ... */
147 int fake_picture_number; /* picture number at the bitstream frame rate */
148 int gop_picture_number; /* index of the first picture of a GOP based on fake_pic_num & mpeg1 specific */
149 int picture_in_gop_number; /* 0-> first pic in gop, ... */
150 int b_frames_since_non_b; /* used for encoding, relative to not yet reordered input */
151 int mb_width, mb_height; /* number of MBs horizontally & vertically */
152 int h_edge_pos, v_edge_pos;/* horizontal / vertical position of the right/bottom edge (pixel replicateion)*/
153 int mb_num; /* number of MBs of a picture */
154 int linesize; /* line size, in bytes, may be different from width */
155 int uvlinesize; /* line size, for chroma in bytes, may be different from width */
156 UINT8 *new_picture[3]; /* picture to be compressed */
157 UINT8 *picture_buffer[REORDER_BUFFER_SIZE][3]; /* internal buffers used for reordering of input pictures */
158 int picture_buffer_index;
159 ReorderBuffer coded_order[REORDER_BUFFER_SIZE];
160 UINT8 *last_picture[3]; /* previous picture */
161 UINT8 *last_picture_base[3]; /* real start of the picture */
162 UINT8 *next_picture[3]; /* previous picture (for bidir pred) */
163 UINT8 *next_picture_base[3]; /* real start of the picture */
164 UINT8 *aux_picture[3]; /* aux picture (for B frames only) */
165 UINT8 *aux_picture_base[3]; /* real start of the picture */
166 UINT8 *current_picture[3]; /* buffer to store the decompressed current picture */
167 void *last_dr_opaque;
168 void *next_dr_opaque;
169 int ip_buffer_count; /* number of buffers, currently only >2 if dr1 is used */
170 int num_available_buffers; /* is 0 at the start & after seeking, after the first I frame its 1 after next I/P 2 */
171 int last_dc[3]; /* last DC values for MPEG1 */
172 INT16 *dc_val[3]; /* used for mpeg4 DC prediction, all 3 arrays must be continuous */
173 int y_dc_scale, c_dc_scale;
174 UINT8 *y_dc_scale_table; /* qscale -> y_dc_scale table */
175 UINT8 *c_dc_scale_table; /* qscale -> c_dc_scale table */
176 UINT8 *coded_block; /* used for coded block pattern prediction (msmpeg4v3, wmv1)*/
177 INT16 (*ac_val[3])[16]; /* used for for mpeg4 AC prediction, all 3 arrays must be continuous */
179 int mb_skiped; /* MUST BE SET only during DECODING */
180 UINT8 *mbskip_table; /* used to avoid copy if macroblock skipped (for black regions for example)
181 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
182 UINT8 *mbintra_table; /* used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding */
183 UINT8 *cbp_table; /* used to store cbp, ac_pred for partitioned decoding */
184 UINT8 *pred_dir_table; /* used to store pred_dir for partitioned decoding */
185 INT8 *qscale_table; /* used to store qscale for partitioned decoding (& postprocessing FIXME export) */
186 UINT8 *edge_emu_buffer;
188 int input_qscale; /* qscale prior to reordering of frames */
189 int input_pict_type; /* pict_type prior to reordering of frames */
190 int force_type; /* 0= no force, otherwise I_TYPE, P_TYPE, ... */
192 int pict_type; /* I_TYPE, P_TYPE, B_TYPE, ... */
194 int last_non_b_pict_type; /* used for mpeg4 gmc b-frames & ratecontrol */
195 int frame_rate_index;
196 /* motion compensation */
198 int h263_long_vectors; /* use horrible h263v1 long vector mode */
200 int f_code; /* forward MV resolution */
201 int b_code; /* backward MV resolution for B Frames (mpeg4) */
202 INT16 (*motion_val)[2]; /* used for MV prediction (4MV per MB) */
203 INT16 (*p_mv_table)[2]; /* MV table (1MV per MB) p-frame encoding */
204 INT16 (*b_forw_mv_table)[2]; /* MV table (1MV per MB) forward mode b-frame encoding */
205 INT16 (*b_back_mv_table)[2]; /* MV table (1MV per MB) backward mode b-frame encoding */
206 INT16 (*b_bidir_forw_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
207 INT16 (*b_bidir_back_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
208 INT16 (*b_direct_forw_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
209 INT16 (*b_direct_back_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
210 INT16 (*b_direct_mv_table)[2]; /* MV table (1MV per MB) direct mode b-frame encoding */
211 int me_method; /* ME algorithm */
212 uint8_t *me_scratchpad; /* data area for the me algo, so that the ME doesnt need to malloc/free */
213 uint32_t *me_map; /* map to avoid duplicate evaluations */
214 uint16_t *me_score_map; /* map to store the SADs */
215 int me_map_generation;
216 int skip_me; /* set if ME is skiped for the current MB */
217 int scene_change_score;
219 #define MV_DIR_BACKWARD 1
220 #define MV_DIR_FORWARD 2
221 #define MV_DIRECT 4 // bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
223 #define MV_TYPE_16X16 0 /* 1 vector for the whole mb */
224 #define MV_TYPE_8X8 1 /* 4 vectors (h263, mpeg4 4MV) */
225 #define MV_TYPE_16X8 2 /* 2 vectors, one per 16x8 block */
226 #define MV_TYPE_FIELD 3 /* 2 vectors, one per field */
227 #define MV_TYPE_DMV 4 /* 2 vectors, special mpeg2 Dual Prime Vectors */
228 /* motion vectors for a macroblock
229 first coordinate : 0 = forward 1 = backward
230 second " : depend on type
231 third " : 0 = x, 1 = y
234 int field_select[2][2];
235 int last_mv[2][2][2]; /* last MV, used for MV prediction in MPEG1 & B-frame MPEG4 */
236 UINT16 (*mv_penalty)[MAX_MV*2+1]; /* amount of bits needed to encode a MV, used for ME */
237 UINT8 *fcode_tab; /* smallest fcode needed for each MV */
240 int no_rounding; /* apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
241 for b-frames rounding mode is allways 0 */
243 int hurry_up; /* when set to 1 during decoding, b frames will be skiped
244 when set to 2 idct/dequant will be skipped too */
246 /* macroblock layer */
250 UINT16 *mb_var; /* Table for MB variances */
251 UINT16 *mc_mb_var; /* Table for motion compensated MB variances */
252 UINT8 *mb_type; /* Table for MB type */
253 #define MB_TYPE_INTRA 0x01
254 #define MB_TYPE_INTER 0x02
255 #define MB_TYPE_INTER4V 0x04
256 #define MB_TYPE_SKIPED 0x08
257 #define MB_TYPE_GMC 0x10
259 #define MB_TYPE_DIRECT 0x10
260 #define MB_TYPE_FORWARD 0x20
261 #define MB_TYPE_BACKWARD 0x40
262 #define MB_TYPE_BIDIR 0x80
264 int block_index[6]; /* index to current MB in block based arrays with edges*/
267 /* matrix transmitted in the bitstream */
268 UINT16 intra_matrix[64];
269 UINT16 chroma_intra_matrix[64];
270 UINT16 inter_matrix[64];
271 UINT16 chroma_inter_matrix[64];
272 #define QUANT_BIAS_SHIFT 4
273 int intra_quant_bias; /* bias for the quantizer */
274 int inter_quant_bias; /* bias for the quantizer */
275 int min_qcoeff; /* minimum encodable coefficient */
276 int max_qcoeff; /* maximum encodable coefficient */
277 /* precomputed matrix (combine qscale and DCT renorm) */
278 int q_intra_matrix[32][64];
279 int q_inter_matrix[32][64];
280 /* identical to the above but for MMX & these are not permutated */
281 UINT16 __align8 q_intra_matrix16[32][64];
282 UINT16 __align8 q_inter_matrix16[32][64];
283 UINT16 __align8 q_intra_matrix16_bias[32][64];
284 UINT16 __align8 q_inter_matrix16_bias[32][64];
285 int block_last_index[6]; /* last non zero coefficient in block */
287 void *opaque; /* private data for the user */
289 /* bit rate control */
290 int I_frame_bits; //FIXME used in mpeg12 ...
291 int mb_var_sum; /* sum of MB variance for current frame */
292 int mc_mb_var_sum; /* motion compensated MB variance for current frame */
295 int frame_bits; /* bits used for the current frame */
296 RateControlContext rc_context; // contains stuff only accessed in ratecontrol.c
298 /* statistics, used for 2-pass encoding */
306 int misc_bits; // cbp, mb_type
307 int last_bits; //temp var used for calculating the above vars
309 /* error concealment / resync */
310 int resync_mb_x; /* x position of last resync marker */
311 int resync_mb_y; /* y position of last resync marker */
312 int mb_num_left; /* number of MBs left in this video packet */
313 GetBitContext next_resync_gb; /* starts at the next resync marker */
314 int next_resync_qscale; /* qscale of next resync marker */
315 int next_resync_pos; /* bitstream position of next resync marker */
316 #define DECODING_AC_LOST -1
317 #define DECODING_ACDC_LOST -2
318 #define DECODING_DESYNC -3
320 int next_p_frame_damaged; /* set if the next p frame is damaged, to avoid showing trashed b frames */
321 int error_resilience;
327 /* H.263+ specific */
330 int h263_aic; /* Advanded INTRA Coding (AIC) */
331 int h263_aic_dir; /* AIC direction: 0 = left, 1 = top */
334 int time_increment_resolution;
335 int time_increment_bits; /* number of bits to represent the fractional part of time */
337 int time_base; /* time in seconds of last I,P,S Frame */
338 INT64 time; /* time of current frame */
339 INT64 last_non_b_time;
340 UINT16 pp_time; /* time distance between the last 2 p,s,i frames */
341 UINT16 bp_time; /* time distance between the last b and p,s,i frame */
343 int vol_sprite_usage;
348 int sprite_brightness_change;
349 int num_sprite_warping_points;
350 int real_sprite_warping_points;
351 int sprite_offset[2][2];
352 int sprite_delta[2][2][2];
353 int sprite_shift[2][2];
356 int quarter_sample; /* 1->qpel, 0->half pel ME/MC */
359 int enhancement_type;
362 int aspect_ratio_info;
365 int sprite_warping_accuracy;
366 int low_latency_sprite;
367 int data_partitioning;
368 int rvlc; /* reversible vlc */
369 int resync_marker; /* could this stream contain resync markers*/
370 int low_delay; /* no reordering needed / has no b-frames */
372 int vol_control_parameters; /* does the stream contain the low_delay flag, used to workaround buggy encoders */
373 PutBitContext tex_pb; /* used for data partitioned VOPs */
374 PutBitContext pb2; /* used for data partitioned VOPs */
375 #define PB_BUFFER_SIZE 1024*256
376 uint8_t *tex_pb_buffer;
379 INT8 *non_b_mv4_table;
381 /* divx specific, used to workaround (many) bugs in divx5 */
384 #define BITSTREAM_BUFFER_SIZE 1024*256
385 UINT8 *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
386 int bitstream_buffer_size;
389 int rv10_version; /* RV10 version: 0 or 3 */
390 int rv10_first_dc_coded[3];
393 struct MJpegContext *mjpeg_ctx;
394 int mjpeg_vsample[3]; /* vertical sampling factors, default = {2, 1, 1} */
395 int mjpeg_hsample[3]; /* horizontal sampling factors, default = {2, 1, 1} */
396 int mjpeg_write_tables; /* do we want to have quantisation- and
397 huffmantables in the jpeg file ? */
398 int mjpeg_data_only_frames; /* frames only with SOI, SOS and EOI markers */
400 /* MSMPEG4 specific */
403 int rl_chroma_table_index;
405 int use_skip_mb_code;
406 int slice_height; /* in macroblocks */
407 int first_slice_line; /* used in mpeg4 too to handle resync markers */
408 int flipflop_rounding;
409 int msmpeg4_version; /* 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8*/
411 int esc3_level_length;
413 UINT8 *inter_scantable;
414 UINT8 *intra_scantable;
415 UINT8 *intra_v_scantable;
416 UINT8 *intra_h_scantable;
417 /* [mb_intra][isChroma][level][run][last] */
418 int ac_stats[2][2][MAX_LEVEL+1][MAX_RUN+1][2];
419 int inter_intra_pred;
421 /* decompression specific */
424 /* MPEG2 specific - I wish I had not to support this mess. */
425 int progressive_sequence;
426 int mpeg_f_code[2][2];
427 int picture_structure;
429 #define PICT_TOP_FIELD 1
430 #define PICT_BOTTOM_FIELD 2
433 int intra_dc_precision;
434 int frame_pred_frame_dct;
436 int concealment_motion_vectors;
438 int intra_vlc_format;
440 int repeat_first_field;
442 int progressive_frame;
450 /* These are explained on avcodec.h */
452 int rtp_payload_size;
453 void (*rtp_callback)(void *data, int size, int packet_number);
455 UINT8 *ptr_last_mb_line;
456 UINT32 mb_line_avgsize;
458 DCTELEM (*block)[64]; /* points to one of the following blocks */
459 DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
460 void (*dct_unquantize_mpeg1)(struct MpegEncContext *s,
461 DCTELEM *block, int n, int qscale);
462 void (*dct_unquantize_mpeg2)(struct MpegEncContext *s,
463 DCTELEM *block, int n, int qscale);
464 void (*dct_unquantize_h263)(struct MpegEncContext *s,
465 DCTELEM *block, int n, int qscale);
466 void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
467 DCTELEM *block, int n, int qscale);
468 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
469 void (*fdct)(DCTELEM *block);
472 int MPV_common_init(MpegEncContext *s);
473 void MPV_common_end(MpegEncContext *s);
474 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
475 void MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
476 void MPV_frame_end(MpegEncContext *s);
478 void MPV_common_init_mmx(MpegEncContext *s);
481 void MPV_common_init_axp(MpegEncContext *s);
484 void MPV_common_init_mlib(MpegEncContext *s);
486 extern void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w);
487 void ff_conceal_past_errors(MpegEncContext *s, int conceal_all);
488 void ff_copy_bits(PutBitContext *pb, UINT8 *src, int length);
489 void ff_clean_intra_table_entries(MpegEncContext *s);
492 void ff_estimate_p_frame_motion(MpegEncContext * s,
494 void ff_estimate_b_frame_motion(MpegEncContext * s,
496 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
497 void ff_fix_long_p_mvs(MpegEncContext * s);
498 void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
501 extern INT16 ff_mpeg1_default_intra_matrix[64];
502 extern INT16 ff_mpeg1_default_non_intra_matrix[64];
503 extern UINT8 ff_mpeg1_dc_scale_table[128];
505 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
506 void mpeg1_encode_mb(MpegEncContext *s,
507 DCTELEM block[6][64],
508 int motion_x, int motion_y);
509 void ff_mpeg1_encode_init(MpegEncContext *s);
512 typedef struct RLTable {
513 int n; /* number of entries of table_vlc minus 1 */
514 int last; /* number of values for last = 0 */
515 const UINT16 (*table_vlc)[2];
516 const INT8 *table_run;
517 const INT8 *table_level;
518 UINT8 *index_run[2]; /* encoding only */
519 INT8 *max_level[2]; /* encoding & decoding */
520 INT8 *max_run[2]; /* encoding & decoding */
521 VLC vlc; /* decoding only deprected FIXME remove*/
522 RL_VLC_ELEM *rl_vlc[32]; /* decoding only */
525 void init_rl(RLTable *rl);
526 void init_vlc_rl(RLTable *rl);
528 static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
531 index = rl->index_run[last][run];
534 if (level > rl->max_level[last][run])
536 return index + level - 1;
539 extern UINT8 ff_mpeg4_y_dc_scale_table[32];
540 extern UINT8 ff_mpeg4_c_dc_scale_table[32];
541 extern INT16 ff_mpeg4_default_intra_matrix[64];
542 extern INT16 ff_mpeg4_default_non_intra_matrix[64];
544 void h263_encode_mb(MpegEncContext *s,
545 DCTELEM block[6][64],
546 int motion_x, int motion_y);
547 void mpeg4_encode_mb(MpegEncContext *s,
548 DCTELEM block[6][64],
549 int motion_x, int motion_y);
550 void h263_encode_picture_header(MpegEncContext *s, int picture_number);
551 int h263_encode_gob_header(MpegEncContext * s, int mb_line);
552 INT16 *h263_pred_motion(MpegEncContext * s, int block,
554 void mpeg4_pred_ac(MpegEncContext * s, INT16 *block, int n,
556 void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
557 void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
558 void h263_encode_init(MpegEncContext *s);
560 void h263_decode_init_vlc(MpegEncContext *s);
561 int h263_decode_picture_header(MpegEncContext *s);
562 int h263_decode_gob_header(MpegEncContext *s);
563 int mpeg4_decode_picture_header(MpegEncContext * s);
564 int intel_h263_decode_picture_header(MpegEncContext *s);
565 int h263_decode_mb(MpegEncContext *s,
566 DCTELEM block[6][64]);
567 int h263_get_picture_format(int width, int height);
568 int ff_mpeg4_decode_video_packet_header(MpegEncContext *s);
569 int ff_mpeg4_resync(MpegEncContext *s);
570 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
571 void ff_mpeg4_clean_buffers(MpegEncContext *s);
572 void ff_mpeg4_stuffing(PutBitContext * pbc);
573 void ff_mpeg4_init_partitions(MpegEncContext *s);
574 void ff_mpeg4_merge_partitions(MpegEncContext *s);
575 extern inline int ff_mpeg4_pred_dc(MpegEncContext * s, int n, UINT16 **dc_val_ptr, int *dir_ptr);
578 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
579 int rv_decode_dc(MpegEncContext *s, int n);
582 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
583 void msmpeg4_encode_ext_header(MpegEncContext * s);
584 void msmpeg4_encode_mb(MpegEncContext * s,
585 DCTELEM block[6][64],
586 int motion_x, int motion_y);
587 int msmpeg4_decode_picture_header(MpegEncContext * s);
588 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
589 int msmpeg4_decode_mb(MpegEncContext *s,
590 DCTELEM block[6][64]);
591 int ff_msmpeg4_decode_init(MpegEncContext *s);
592 void ff_msmpeg4_encode_init(MpegEncContext *s);
596 int mjpeg_init(MpegEncContext *s);
597 void mjpeg_close(MpegEncContext *s);
598 void mjpeg_encode_mb(MpegEncContext *s,
599 DCTELEM block[6][64]);
600 void mjpeg_picture_header(MpegEncContext *s);
601 void mjpeg_picture_trailer(MpegEncContext *s);
604 int ff_rate_control_init(MpegEncContext *s);
605 int ff_rate_estimate_qscale(MpegEncContext *s);
606 int ff_rate_estimate_qscale_pass2(MpegEncContext *s);
607 void ff_write_pass1_stats(MpegEncContext *s);
608 void ff_rate_control_uninit(MpegEncContext *s);
609 double ff_eval(char *s, double *const_value, char **const_name,
610 double (**func1)(void *, double), char **func1_name,
611 double (**func2)(void *, double, double), char **func2_name,
615 #endif /* AVCODEC_MPEGVIDEO_H */