dont double check vectors
[libav.git] / libavcodec / mpegvideo.h
CommitLineData
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1/*
2 * Generic DCT based hybrid video encoder
ff4ec49e 3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
de6d9b64 4 *
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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.
de6d9b64 9 *
ff4ec49e 10 * This library is distributed in the hope that it will be useful,
de6d9b64 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
de6d9b64 14 *
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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
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18 */
19
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20#ifndef AVCODEC_MPEGVIDEO_H
21#define AVCODEC_MPEGVIDEO_H
22
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23#define FRAME_SKIPED 100 // return value for header parsers if frame is not coded
24
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25enum OutputFormat {
26 FMT_MPEG1,
27 FMT_H263,
9dbcbd92 28 FMT_MJPEG,
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29};
30
31#define MPEG_BUF_SIZE (16 * 1024)
32
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33#define QMAT_SHIFT_MMX 19
34#define QMAT_SHIFT 25
35
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36#define MAX_FCODE 7
37#define MAX_MV 2048
9dbcbd92 38#define REORDER_BUFFER_SIZE (FF_MAX_B_FRAMES+2)
45870f57 39
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40typedef struct Predictor{
41 double coeff;
42 double count;
43 double decay;
44} Predictor;
45
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46typedef struct RateControlEntry{
47 int pict_type;
48 int qscale;
49 int mv_bits;
50 int i_tex_bits;
51 int p_tex_bits;
52 int misc_bits;
ff4ec49e 53 UINT64 expected_bits;
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54 int new_pict_type;
55 float new_qscale;
56}RateControlEntry;
57
58typedef struct RateControlContext{
59 FILE *stats_file;
60 int num_entries;
61 RateControlEntry *entry;
62}RateControlContext;
63
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64typedef struct ReorderBuffer{
65 UINT8 *picture[3];
66 int pict_type;
67 int qscale;
68 int force_type;
69 int picture_number;
70 int picture_in_gop_number;
71} ReorderBuffer;
72
de6d9b64 73typedef struct MpegEncContext {
58f26ba9 74 struct AVCodecContext *avctx;
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75 /* the following parameters must be initialized before encoding */
76 int width, height; /* picture size. must be a multiple of 16 */
77 int gop_size;
78 int frame_rate; /* number of frames per second */
79 int intra_only; /* if true, only intra pictures are generated */
80 int bit_rate; /* wanted bit rate */
9cdd6a24 81 int bit_rate_tolerance; /* amount of +- bits (>0)*/
de6d9b64 82 enum OutputFormat out_format; /* output format */
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83 int h263_pred; /* use mpeg4/h263 ac/dc predictions */
84
85/* the following codec id fields are deprecated in favor of codec_id */
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86 int h263_plus; /* h263 plus headers */
87 int h263_rv10; /* use RV10 variation for H263 */
d7e9533a 88 int h263_msmpeg4; /* generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)*/
de6d9b64 89 int h263_intel; /* use I263 intel h263 header */
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90
91 int codec_id; /* see CODEC_ID_xxx */
de6d9b64 92 int fixed_qscale; /* fixed qscale if non zero */
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93 float qcompress; /* amount of qscale change between easy & hard scenes (0.0-1.0) */
94 float qblur; /* amount of qscale smoothing over time (0.0-1.0) */
95 int qmin; /* min qscale */
96 int qmax; /* max qscale */
97 int max_qdiff; /* max qscale difference between frames */
3bb4e23a 98 int encoding; /* true if we are encoding (vs decoding) */
ba6802de 99 int flags; /* AVCodecContext.flags (HQ, MV4, ...) */
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100 int force_input_type;/* 0= no force, otherwise I_TYPE, P_TYPE, ... */
101 int max_b_frames; /* max number of b-frames for encoding */
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102 float b_quant_factor;/* qscale factor between ips and b frames */
103 int rc_strategy;
104 int b_frame_strategy;
92ba5ffb 105 int workaround_bugs; /* workaround bugs in encoders which cannot be detected automatically */
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106 /* the following fields are managed internally by the encoder */
107
108 /* bit output */
109 PutBitContext pb;
110
111 /* sequence parameters */
112 int context_initialized;
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113 int input_picture_number;
114 int input_picture_in_gop_number; /* 0-> first pic in gop, ... */
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115 int picture_number;
116 int fake_picture_number; /* picture number at the bitstream frame rate */
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117 int gop_picture_number; /* index of the first picture of a GOP based on fake_pic_num & mpeg1 specific */
118 int picture_in_gop_number; /* 0-> first pic in gop, ... */
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119 int b_frames_since_non_b; /* used for encoding, relative to not yet reordered input */
120 int mb_width, mb_height; /* number of MBs horizontally & vertically */
e03c341e 121 int mb_num; /* number of MBs of a picture */
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122 int linesize; /* line size, in bytes, may be different from width */
123 UINT8 *new_picture[3]; /* picture to be compressed */
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124 UINT8 *picture_buffer[REORDER_BUFFER_SIZE][3]; /* internal buffers used for reordering of input pictures */
125 int picture_buffer_index;
126 ReorderBuffer coded_order[REORDER_BUFFER_SIZE];
127 UINT8 *last_picture[3]; /* previous picture */
de6d9b64 128 UINT8 *last_picture_base[3]; /* real start of the picture */
9dbcbd92 129 UINT8 *next_picture[3]; /* previous picture (for bidir pred) */
de6d9b64 130 UINT8 *next_picture_base[3]; /* real start of the picture */
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131 UINT8 *aux_picture[3]; /* aux picture (for B frames only) */
132 UINT8 *aux_picture_base[3]; /* real start of the picture */
133 UINT8 *current_picture[3]; /* buffer to store the decompressed current picture */
1c2a8c7f 134 int num_available_buffers; /* is 0 at the start & after seeking, after the first I frame its 1 after next I/P 2 */
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135 int last_dc[3]; /* last DC values for MPEG1 */
136 INT16 *dc_val[3]; /* used for mpeg4 DC prediction, all 3 arrays must be continuous */
de6d9b64 137 int y_dc_scale, c_dc_scale;
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138 UINT8 *coded_block; /* used for coded block pattern prediction (msmpeg4v3, wmv1)*/
139 INT16 (*ac_val[3])[16]; /* used for for mpeg4 AC prediction, all 3 arrays must be continuous */
de6d9b64 140 int ac_pred;
3bb4e23a 141 int mb_skiped; /* MUST BE SET only during DECODING */
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142 UINT8 *mbskip_table; /* used to avoid copy if macroblock skipped (for black regions for example)
143 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
144 UINT8 *mbintra_table; /* used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding */
de6d9b64 145
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146 int input_qscale; /* qscale prior to reordering of frames */
147 int input_pict_type; /* pict_type prior to reordering of frames */
148 int force_type; /* 0= no force, otherwise I_TYPE, P_TYPE, ... */
149 int qscale; /* QP */
8b4c7dbc 150 int last_non_b_qscale; /* QP of last non b frame used for b frame qscale*/
9dbcbd92 151 int pict_type; /* I_TYPE, P_TYPE, B_TYPE, ... */
8b4c7dbc 152 int last_non_b_pict_type; /* used for mpeg4 gmc b-frames & ratecontrol */
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153 int frame_rate_index;
154 /* motion compensation */
155 int unrestricted_mv;
156 int h263_long_vectors; /* use horrible h263v1 long vector mode */
157
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158 int f_code; /* forward MV resolution */
159 int b_code; /* backward MV resolution for B Frames (mpeg4) */
160 INT16 (*motion_val)[2]; /* used for MV prediction (4MV per MB) */
161 INT16 (*p_mv_table)[2]; /* MV table (1MV per MB) p-frame encoding */
162 INT16 (*last_p_mv_table)[2]; /* MV table (1MV per MB) p-frame encoding */
163 INT16 (*b_forw_mv_table)[2]; /* MV table (1MV per MB) forward mode b-frame encoding */
164 INT16 (*b_back_mv_table)[2]; /* MV table (1MV per MB) backward mode b-frame encoding */
165 INT16 (*b_bidir_forw_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
166 INT16 (*b_bidir_back_mv_table)[2]; /* MV table (1MV per MB) bidir mode b-frame encoding */
167 INT16 (*b_direct_forw_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
168 INT16 (*b_direct_back_mv_table)[2];/* MV table (1MV per MB) direct mode b-frame encoding */
169 INT16 (*b_direct_mv_table)[2]; /* MV table (1MV per MB) direct mode b-frame encoding */
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170 int me_method; /* ME algorithm */
171 uint8_t *me_scratchpad; /* data area for the me algo, so that the ME doesnt need to malloc/free */
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172 int mv_dir;
173#define MV_DIR_BACKWARD 1
174#define MV_DIR_FORWARD 2
6f91bcd1 175#define MV_DIRECT 4 // bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
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176 int mv_type;
177#define MV_TYPE_16X16 0 /* 1 vector for the whole mb */
45870f57 178#define MV_TYPE_8X8 1 /* 4 vectors (h263, mpeg4 4MV) */
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179#define MV_TYPE_16X8 2 /* 2 vectors, one per 16x8 block */
180#define MV_TYPE_FIELD 3 /* 2 vectors, one per field */
181#define MV_TYPE_DMV 4 /* 2 vectors, special mpeg2 Dual Prime Vectors */
182 /* motion vectors for a macroblock
183 first coordinate : 0 = forward 1 = backward
184 second " : depend on type
185 third " : 0 = x, 1 = y
186 */
187 int mv[2][4][2];
188 int field_select[2][2];
9dbcbd92 189 int last_mv[2][2][2]; /* last MV, used for MV prediction in MPEG1 & B-frame MPEG4 */
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190 UINT16 (*mv_penalty)[MAX_MV*2+1]; /* amount of bits needed to encode a MV, used for ME */
191 UINT8 *fcode_tab; /* smallest fcode needed for each MV */
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192
193 int has_b_frames;
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194 int no_rounding; /* apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
195 for b-frames rounding mode is allways 0 */
de6d9b64 196
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197 int hurry_up; /* when set to 1 during decoding, b frames will be skiped
198 when set to 2 idct/dequant will be skipped too */
199
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200 /* macroblock layer */
201 int mb_x, mb_y;
202 int mb_incr;
203 int mb_intra;
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204 UINT16 *mb_var; /* Table for MB variances */
205 UINT8 *mb_type; /* Table for MB type */
206#define MB_TYPE_INTRA 0x01
207#define MB_TYPE_INTER 0x02
208#define MB_TYPE_INTER4V 0x04
209#define MB_TYPE_SKIPED 0x08
210#define MB_TYPE_DIRECT 0x10
211#define MB_TYPE_FORWARD 0x20
9dbcbd92 212#define MB_TYPE_BACKWARD 0x40
ba6802de 213#define MB_TYPE_BIDIR 0x80
4278e7a6 214
9dbcbd92 215 int block_index[6]; /* index to current MB in block based arrays with edges*/
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216 int block_wrap[6];
217
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218 /* matrix transmitted in the bitstream */
219 UINT16 intra_matrix[64];
220 UINT16 chroma_intra_matrix[64];
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221 UINT16 inter_matrix[64];
222 UINT16 chroma_inter_matrix[64];
223#define QUANT_BIAS_SHIFT 4
224 int intra_quant_bias; /* bias for the quantizer */
225 int inter_quant_bias; /* bias for the quantizer */
226 int min_qcoeff; /* minimum encodable coefficient */
227 int max_qcoeff; /* maximum encodable coefficient */
de6d9b64 228 /* precomputed matrix (combine qscale and DCT renorm) */
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229 int q_intra_matrix[32][64];
230 int q_inter_matrix[32][64];
2f349de2 231 /* identical to the above but for MMX & these are not permutated */
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232 UINT16 __align8 q_intra_matrix16[32][64];
233 UINT16 __align8 q_inter_matrix16[32][64];
234 UINT16 __align8 q_intra_matrix16_bias[32][64];
235 UINT16 __align8 q_inter_matrix16_bias[32][64];
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236 int block_last_index[6]; /* last non zero coefficient in block */
237
238 void *opaque; /* private data for the user */
239
240 /* bit rate control */
9dbcbd92 241 int I_frame_bits; //FIXME used in mpeg12 ...
e03c341e 242 int avg_mb_var; /* average MB variance for current frame */
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243 int mc_mb_var; /* motion compensated MB variance for current frame */
244 int last_non_b_mc_mb_var;/* motion compensated MB variance for last non b frame */
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245 INT64 wanted_bits;
246 INT64 total_bits;
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247 int frame_bits; /* bits used for the current frame */
248 int pb_frame_bits; /* bits of the last b...bp group */
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249 Predictor i_pred;
250 Predictor p_pred;
251 double qsum; /* sum of qscales */
252 double qcount; /* count of qscales */
253 double short_term_qsum; /* sum of recent qscales */
254 double short_term_qcount; /* count of recent qscales */
8b4c7dbc 255 RateControlContext rc_context;
9cdd6a24 256
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257 /* statistics, used for 2-pass encoding */
258 int mv_bits;
259 int header_bits;
260 int i_tex_bits;
261 int p_tex_bits;
262 int i_count;
263 int p_count;
264 int skip_count;
265 int misc_bits; // cbp, mb_type
266 int last_bits; //temp var used for calculating the above vars
267
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268 /* H.263 specific */
269 int gob_number;
644d98a4 270 int gob_index;
102d3908 271 int first_gob_line;
d140623f 272
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273 /* H.263+ specific */
274 int umvplus;
275 int umvplus_dec;
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276 int h263_aic; /* Advanded INTRA Coding (AIC) */
277 int h263_aic_dir; /* AIC direction: 0 = left, 1 = top */
544286b3 278
de6d9b64 279 /* mpeg4 specific */
6f91bcd1 280 int time_increment_resolution;
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281 int time_increment_bits; /* number of bits to represent the fractional part of time */
282 int last_time_base;
283 int time_base; /* time in seconds of last I,P,S Frame */
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284 INT64 time; /* time of current frame */
285 INT64 last_non_b_time;
286 UINT16 pp_time; /* time distance between the last 2 p,s,i frames */
287 UINT16 bp_time; /* time distance between the last b and p,s,i frame */
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288 int shape;
289 int vol_sprite_usage;
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290 int sprite_width;
291 int sprite_height;
292 int sprite_left;
293 int sprite_top;
294 int sprite_brightness_change;
73c8e514 295 int num_sprite_warping_points;
44eb4951 296 int real_sprite_warping_points;
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297 int sprite_offset[2][2];
298 int sprite_delta[2][2][2];
299 int sprite_shift[2][2];
300 int mcsel;
1a565432 301 int quant_precision;
9dbcbd92 302 int quarter_sample; /* 1->qpel, 0->half pel ME/MC */
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303 int scalability;
304 int new_pred;
305 int reduced_res_vop;
306 int aspect_ratio_info;
307 int sprite_warping_accuracy;
308 int low_latency_sprite;
309 int data_partioning;
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310 int resync_marker;
311 int resync_x_pos;
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312 int low_delay; /* no reordering needed / has no b-frames */
313 int vo_type;
7aaf3b98 314 int vol_control_parameters; /* does the stream contain the low_delay flag, used to workaround buggy encoders */
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315
316 /* divx specific, used to workaround (many) bugs in divx5 */
317 int divx_version;
318 int divx_build;
eec1c6b9 319#define BITSTREAM_BUFFER_SIZE 1024*256
ff4ec49e 320 UINT8 *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
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321 int bitstream_buffer_size;
322
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323 /* RV10 specific */
324 int rv10_version; /* RV10 version: 0 or 3 */
325 int rv10_first_dc_coded[3];
326
327 /* MJPEG specific */
328 struct MJpegContext *mjpeg_ctx;
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329 int mjpeg_vsample[3]; /* vertical sampling factors, default = {2, 1, 1} */
330 int mjpeg_hsample[3]; /* horizontal sampling factors, default = {2, 1, 1} */
331 int mjpeg_write_tables; /* do we want to have quantisation- and
332 huffmantables in the jpeg file ? */
a69b930c 333 int mjpeg_data_only_frames; /* frames only with SOI, SOS and EOI markers */
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334
335 /* MSMPEG4 specific */
336 int mv_table_index;
337 int rl_table_index;
338 int rl_chroma_table_index;
339 int dc_table_index;
340 int use_skip_mb_code;
341 int slice_height; /* in macroblocks */
49092244 342 int first_slice_line; /* used in mpeg4 too to handle resync markers */
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343 int flipflop_rounding;
344 int bitrate;
d7e9533a 345 int msmpeg4_version; /* 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 */
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346 /* decompression specific */
347 GetBitContext gb;
348
349 /* MPEG2 specific - I wish I had not to support this mess. */
350 int progressive_sequence;
351 int mpeg_f_code[2][2];
352 int picture_structure;
353/* picture type */
354#define PICT_TOP_FIELD 1
355#define PICT_BOTTOM_FIELD 2
356#define PICT_FRAME 3
357
358 int intra_dc_precision;
359 int frame_pred_frame_dct;
360 int top_field_first;
361 int concealment_motion_vectors;
362 int q_scale_type;
363 int intra_vlc_format;
364 int alternate_scan;
365 int repeat_first_field;
366 int chroma_420_type;
367 int progressive_frame;
368 int mpeg2;
369 int full_pel[2];
370 int interlaced_dct;
371 int last_qscale;
372 int first_slice;
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373
374 /* RTP specific */
81401c1f 375 /* These are explained on avcodec.h */
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376 int rtp_mode;
377 int rtp_payload_size;
81401c1f 378 void (*rtp_callback)(void *data, int size, int packet_number);
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379 UINT8 *ptr_lastgob;
380 UINT8 *ptr_last_mb_line;
381 UINT32 mb_line_avgsize;
382
ba6802de 383 DCTELEM (*block)[64]; /* points to one of the following blocks */
91029be7 384 DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
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385 void (*dct_unquantize_mpeg1)(struct MpegEncContext *s,
386 DCTELEM *block, int n, int qscale);
387 void (*dct_unquantize_mpeg2)(struct MpegEncContext *s,
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388 DCTELEM *block, int n, int qscale);
389 void (*dct_unquantize_h263)(struct MpegEncContext *s,
390 DCTELEM *block, int n, int qscale);
391 void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
21af69f7 392 DCTELEM *block, int n, int qscale);
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393} MpegEncContext;
394
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395int MPV_common_init(MpegEncContext *s);
396void MPV_common_end(MpegEncContext *s);
397void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
398void MPV_frame_start(MpegEncContext *s);
399void MPV_frame_end(MpegEncContext *s);
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400#ifdef HAVE_MMX
401void MPV_common_init_mmx(MpegEncContext *s);
402#endif
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403int (*dct_quantize)(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
404void (*draw_edges)(UINT8 *buf, int wrap, int width, int height, int w);
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405
406/* motion_est.c */
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407void ff_estimate_p_frame_motion(MpegEncContext * s,
408 int mb_x, int mb_y);
409void ff_estimate_b_frame_motion(MpegEncContext * s,
410 int mb_x, int mb_y);
411int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
412void ff_fix_long_p_mvs(MpegEncContext * s);
413void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
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414
415/* mpeg12.c */
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416extern INT16 default_intra_matrix[64];
417extern INT16 default_non_intra_matrix[64];
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418
419void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
420void mpeg1_encode_mb(MpegEncContext *s,
421 DCTELEM block[6][64],
422 int motion_x, int motion_y);
11ce8834 423void mpeg1_encode_init(MpegEncContext *s);
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424
425/* h263enc.c */
426
427/* run length table */
428#define MAX_RUN 64
429#define MAX_LEVEL 64
430
431typedef struct RLTable {
432 int n; /* number of entries of table_vlc minus 1 */
433 int last; /* number of values for last = 0 */
434 const UINT16 (*table_vlc)[2];
435 const INT8 *table_run;
436 const INT8 *table_level;
437 UINT8 *index_run[2]; /* encoding only */
438 INT8 *max_level[2]; /* encoding & decoding */
439 INT8 *max_run[2]; /* encoding & decoding */
440 VLC vlc; /* decoding only */
441} RLTable;
442
443void init_rl(RLTable *rl);
444void init_vlc_rl(RLTable *rl);
445
3232bc88 446static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
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447{
448 int index;
449 index = rl->index_run[last][run];
450 if (index >= rl->n)
451 return rl->n;
452 if (level > rl->max_level[last][run])
453 return rl->n;
454 return index + level - 1;
455}
456
457void h263_encode_mb(MpegEncContext *s,
458 DCTELEM block[6][64],
459 int motion_x, int motion_y);
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460void mpeg4_encode_mb(MpegEncContext *s,
461 DCTELEM block[6][64],
462 int motion_x, int motion_y);
de6d9b64 463void h263_encode_picture_header(MpegEncContext *s, int picture_number);
644d98a4 464int h263_encode_gob_header(MpegEncContext * s, int mb_line);
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465void h263_dc_scale(MpegEncContext *s);
466INT16 *h263_pred_motion(MpegEncContext * s, int block,
467 int *px, int *py);
468void mpeg4_pred_ac(MpegEncContext * s, INT16 *block, int n,
469 int dir);
91029be7 470void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
de6d9b64 471void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
45870f57 472void h263_encode_init(MpegEncContext *s);
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473
474void h263_decode_init_vlc(MpegEncContext *s);
475int h263_decode_picture_header(MpegEncContext *s);
644d98a4 476int h263_decode_gob_header(MpegEncContext *s);
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477int mpeg4_decode_picture_header(MpegEncContext * s);
478int intel_h263_decode_picture_header(MpegEncContext *s);
479int h263_decode_mb(MpegEncContext *s,
480 DCTELEM block[6][64]);
481int h263_get_picture_format(int width, int height);
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482
483/* rv10.c */
484void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
485int rv_decode_dc(MpegEncContext *s, int n);
486
487/* msmpeg4.c */
488void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
ae40484c 489void msmpeg4_encode_ext_header(MpegEncContext * s);
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490void msmpeg4_encode_mb(MpegEncContext * s,
491 DCTELEM block[6][64],
492 int motion_x, int motion_y);
de6d9b64 493int msmpeg4_decode_picture_header(MpegEncContext * s);
ae40484c 494int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
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495int msmpeg4_decode_mb(MpegEncContext *s,
496 DCTELEM block[6][64]);
497int msmpeg4_decode_init_vlc(MpegEncContext *s);
92ba5ffb 498void ff_old_msmpeg4_dc_scale(MpegEncContext *s);
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499
500/* mjpegenc.c */
501
502int mjpeg_init(MpegEncContext *s);
503void mjpeg_close(MpegEncContext *s);
504void mjpeg_encode_mb(MpegEncContext *s,
505 DCTELEM block[6][64]);
506void mjpeg_picture_header(MpegEncContext *s);
507void mjpeg_picture_trailer(MpegEncContext *s);
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508
509/* rate control */
510int ff_rate_control_init(MpegEncContext *s);
511int ff_rate_estimate_qscale(MpegEncContext *s);
512int ff_rate_estimate_qscale_pass2(MpegEncContext *s);
513void ff_write_pass1_stats(MpegEncContext *s);
514void ff_rate_control_uninit(MpegEncContext *s);
515
cd4af68a 516#endif /* AVCODEC_MPEGVIDEO_H */