vfwcap: Replace deprecated av_destruct_packet() by av_free_packet()
[libav.git] / libavcodec / mpegvideo.h
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1/*
2 * Generic DCT based hybrid video encoder
406792e7 3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
8f2ab833 4 * Copyright (c) 2002-2004 Michael Niedermayer
de6d9b64 5 *
2912e87a 6 * This file is part of Libav.
b78e7197 7 *
2912e87a 8 * Libav is free software; you can redistribute it and/or
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9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
b78e7197 11 * version 2.1 of the License, or (at your option) any later version.
de6d9b64 12 *
2912e87a 13 * Libav is distributed in the hope that it will be useful,
de6d9b64 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
de6d9b64 17 *
ff4ec49e 18 * You should have received a copy of the GNU Lesser General Public
2912e87a 19 * License along with Libav; if not, write to the Free Software
5509bffa 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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21 */
22
983e3246 23/**
ba87f080 24 * @file
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25 * mpegvideo header.
26 */
115329f1 27
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28#ifndef AVCODEC_MPEGVIDEO_H
29#define AVCODEC_MPEGVIDEO_H
cd4af68a 30
657ccb5a 31#include "avcodec.h"
e74433a8 32#include "blockdsp.h"
54974c62 33#include "error_resilience.h"
a9aee08d 34#include "fdctdsp.h"
9106a698 35#include "get_bits.h"
0338c396 36#include "h263dsp.h"
f4fed5a2 37#include "hpeldsp.h"
e3fcb143 38#include "idctdsp.h"
2d604443 39#include "me_cmp.h"
fab9df63 40#include "mpegvideodsp.h"
8d686ca5 41#include "mpegvideoencdsp.h"
f46bb608 42#include "pixblockdsp.h"
b2755007 43#include "put_bits.h"
0de9926f 44#include "ratecontrol.h"
4067d81b 45#include "parser.h"
3bfe9260 46#include "mpeg12data.h"
368f5035 47#include "qpeldsp.h"
6d934615 48#include "rl.h"
759001c5 49#include "thread.h"
8c53d39e 50#include "videodsp.h"
5c91a675 51
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52#include "libavutil/opt.h"
53
160d679c 54#define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
eec1c6b9 55
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56enum OutputFormat {
57 FMT_MPEG1,
c6148de2 58 FMT_H261,
de6d9b64 59 FMT_H263,
115329f1 60 FMT_MJPEG,
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61};
62
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63#define MAX_FCODE 7
64#define MAX_MV 2048
1e491e29 65
e8b78541 66#define MAX_THREADS 16
9c3d33d6 67
5cbb0e70 68#define MAX_PICTURE_COUNT 32
45870f57 69
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70#define MAX_B_FRAMES 16
71
7f2fe444 72#define ME_MAP_SIZE 64
7f2fe444 73
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74#define MAX_MB_BYTES (30*16*16*3/8 + 120)
75
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76#define INPLACE_OFFSET 16
77
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78#define EDGE_WIDTH 16
79
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80/* Start codes. */
81#define SEQ_END_CODE 0x000001b7
82#define SEQ_START_CODE 0x000001b3
83#define GOP_START_CODE 0x000001b8
84#define PICTURE_START_CODE 0x00000100
85#define SLICE_MIN_START_CODE 0x00000101
86#define SLICE_MAX_START_CODE 0x000001af
87#define EXT_START_CODE 0x000001b5
88#define USER_START_CODE 0x000001b2
89
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90/* encoding scans */
91extern const uint8_t ff_alternate_horizontal_scan[64];
92extern const uint8_t ff_alternate_vertical_scan[64];
93
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94struct MpegEncContext;
95
277f4827 96/**
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97 * Picture.
98 */
1e491e29 99typedef struct Picture{
f6774f90 100 struct AVFrame *f;
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101 ThreadFrame tf;
102
103 AVBufferRef *qscale_table_buf;
104 int8_t *qscale_table;
105
106 AVBufferRef *motion_val_buf[2];
107 int16_t (*motion_val[2])[2];
108
109 AVBufferRef *mb_type_buf;
e0c16e4e 110 uint32_t *mb_type; ///< types and macros are defined in mpegutils.h
b6094811 111
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112 AVBufferRef *mbskip_table_buf;
113 uint8_t *mbskip_table;
114
115 AVBufferRef *ref_index_buf[2];
116 int8_t *ref_index[2];
117
118 AVBufferRef *mb_var_buf;
119 uint16_t *mb_var; ///< Table for MB variances
120
121 AVBufferRef *mc_mb_var_buf;
122 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
123
124 AVBufferRef *mb_mean_buf;
125 uint8_t *mb_mean; ///< Table for MB luminance
126
127 AVBufferRef *hwaccel_priv_buf;
128 /**
129 * hardware accelerator private data
130 */
131 void *hwaccel_picture_private;
1e491e29 132
da9cea77 133 int field_picture; ///< whether or not the picture was encoded in separate fields
0da71265 134
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135 int mb_var_sum; ///< sum of MB variance for current frame
136 int mc_mb_var_sum; ///< motion compensated MB variance for current frame
759001c5 137
0d1e9246 138 int b_frame_score; /* */
435c0b87 139 int needs_realloc; ///< Picture needs to be reallocated (eg due to a frame size change)
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140
141 int reference;
142 int shared;
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143} Picture;
144
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145/**
146 * Motion estimation context.
147 */
1457ab52 148typedef struct MotionEstContext{
1f202b0d 149 AVCodecContext *avctx;
115329f1 150 int skip; ///< set if ME is skipped for the current MB
755bfeab 151 int co_located_mv[4][2]; ///< mv from last P-frame for direct mode ME
1457ab52 152 int direct_basis_mv[4][2];
755bfeab 153 uint8_t *scratchpad; ///< data area for the ME algo, so that the ME does not need to malloc/free
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154 uint8_t *best_mb;
155 uint8_t *temp_mb[2];
156 uint8_t *temp;
157 int best_bits;
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158 uint32_t *map; ///< map to avoid duplicate evaluations
159 uint32_t *score_map; ///< map to store the scores
cb668476 160 unsigned map_generation;
826f429a 161 int pre_penalty_factor;
adbfc605 162 int penalty_factor; /**< an estimate of the bits required to
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163 code a given mv value, e.g. (1,0) takes
164 more bits than (0,0). We have to
165 estimate whether any reduction in
166 residual is worth the extra bits. */
1457ab52 167 int sub_penalty_factor;
67725183 168 int mb_penalty_factor;
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169 int flags;
170 int sub_flags;
171 int mb_flags;
115329f1 172 int pre_pass; ///< = 1 for the pre pass
826f429a 173 int dia_size;
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174 int xmin;
175 int xmax;
176 int ymin;
177 int ymax;
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178 int pred_x;
179 int pred_y;
180 uint8_t *src[4][4];
181 uint8_t *ref[4][4];
182 int stride;
183 int uvstride;
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184 /* temp variables for picture complexity calculation */
185 int mc_mb_var_sum_temp;
186 int mb_var_sum_temp;
187 int scene_change_score;
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188/* cmp, chroma_cmp;*/
189 op_pixels_func (*hpel_put)[4];
190 op_pixels_func (*hpel_avg)[4];
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191 qpel_mc_func (*qpel_put)[16];
192 qpel_mc_func (*qpel_avg)[16];
115329f1 193 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
2750b827 194 uint8_t *current_mv_penalty;
1457ab52 195 int (*sub_motion_search)(struct MpegEncContext * s,
bb270c08 196 int *mx_ptr, int *my_ptr, int dmin,
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197 int src_index, int ref_index,
198 int size, int h);
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199}MotionEstContext;
200
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201/**
202 * MpegEncContext.
203 */
de6d9b64 204typedef struct MpegEncContext {
297d9cb3 205 AVClass *class;
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206
207 int y_dc_scale, c_dc_scale;
208 int ac_pred;
209 int block_last_index[12]; ///< last non zero coefficient in block
210 int h263_aic; ///< Advanded INTRA Coding (AIC)
211
212 /* scantables */
213 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
214 ScanTable intra_scantable;
215 ScanTable intra_h_scantable;
216 ScanTable intra_v_scantable;
217
218 /* WARNING: changes above this line require updates to hardcoded
219 * offsets used in asm. */
220
58f26ba9 221 struct AVCodecContext *avctx;
de6d9b64 222 /* the following parameters must be initialized before encoding */
115329f1 223 int width, height;///< picture size. must be a multiple of 16
de6d9b64 224 int gop_size;
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225 int intra_only; ///< if true, only intra pictures are generated
226 int bit_rate; ///< wanted bit rate
227 enum OutputFormat out_format; ///< output format
228 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
91ba181a 229 int pb_frame; ///< PB frame mode (0 = none, 1 = base, 2 = improved)
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230
231/* the following codec id fields are deprecated in favor of codec_id */
115329f1 232 int h263_plus; ///< h263 plus headers
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233 int h263_flv; ///< use flv h263 header
234
36ef5369 235 enum AVCodecID codec_id; /* see AV_CODEC_ID_xxx */
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236 int fixed_qscale; ///< fixed qscale if non zero
237 int encoding; ///< true if we are encoding (vs decoding)
238 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
303e50e6 239 int flags2; ///< AVCodecContext.flags2
115329f1 240 int max_b_frames; ///< max number of b-frames for encoding
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241 int luma_elim_threshold;
242 int chroma_elim_threshold;
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243 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
244 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
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245 int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
246 int stream_codec_tag; ///< internal stream_codec_tag upper case converted from avctx stream_codec_tag
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247 /* the following fields are managed internally by the encoder */
248
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249 /* sequence parameters */
250 int context_initialized;
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251 int input_picture_number; ///< used to set pic->display_picture_number, should not be used for/by anything else
252 int coded_picture_number; ///< used to set pic->coded_picture_number, should not be used for/by anything else
1031fabd 253 int picture_number; //FIXME remove, unclear definition
115329f1 254 int picture_in_gop_number; ///< 0-> first pic in gop, ...
115329f1 255 int mb_width, mb_height; ///< number of MBs horizontally & vertically
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256 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
257 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
bb628dae 258 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
115329f1 259 int mb_num; ///< number of MBs of a picture
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260 ptrdiff_t linesize; ///< line size, in bytes, may be different from width
261 ptrdiff_t uvlinesize; ///< line size, for chroma in bytes, may be different from width
115329f1 262 Picture *picture; ///< main picture buffer
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263 Picture **input_picture; ///< next pictures on display order for encoding
264 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
115329f1 265
187105ff 266 int64_t user_specified_pts; ///< last non-zero pts from AVFrame which was passed into avcodec_encode_video2()
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267 /**
268 * pts difference between the first and second input frame, used for
269 * calculating dts of the first frame when there's a delay */
270 int64_t dts_delta;
271 /**
272 * reordered pts to be used as dts for the next output frame when there's
273 * a delay */
274 int64_t reordered_pts;
d0a2f0af 275
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276 /** bit output */
277 PutBitContext pb;
278
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279 int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
280 int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
281 struct MpegEncContext *thread_context[MAX_THREADS];
881a5e04 282 int slice_context_count; ///< number of used thread_contexts
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283
284 /**
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285 * copy of the previous picture structure.
286 * note, linesize & data, might not match the previous picture (for field pictures)
287 */
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288 Picture last_picture;
289
290 /**
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291 * copy of the next picture structure.
292 * note, linesize & data, might not match the next picture (for field pictures)
293 */
294 Picture next_picture;
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295
296 /**
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297 * copy of the source picture structure for encoding.
298 * note, linesize & data, might not match the source picture (for field pictures)
299 */
300 Picture new_picture;
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301
302 /**
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303 * copy of the current picture structure.
304 * note, linesize & data, might not match the current picture (for field pictures)
305 */
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306 Picture current_picture; ///< buffer to store the decompressed current picture
307
b536d0aa 308 Picture *last_picture_ptr; ///< pointer to the previous picture.
115329f1 309 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
b536d0aa 310 Picture *current_picture_ptr; ///< pointer to the current picture
115329f1 311 int last_dc[3]; ///< last DC values for MPEG1
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312 int16_t *dc_val_base;
313 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
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314 const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
315 const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
332f9ac4 316 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
137c8468 317 uint8_t *coded_block_base;
277f4827 318 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
137c8468 319 int16_t (*ac_val_base)[16];
115329f1 320 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
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321 int mb_skipped; ///< MUST BE SET only during DECODING
322 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
9dbcbd92 323 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
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324 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
325 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
326 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
330deb75 327 uint8_t *edge_emu_buffer; ///< temporary buffer for if MVs point to out-of-frame data
bb628dae 328 uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
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329 uint8_t *obmc_scratchpad;
330 uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
de6d9b64 331
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332 int qscale; ///< QP
333 int chroma_qscale; ///< chroma QP
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334 unsigned int lambda; ///< lagrange multipler used in rate distortion
335 unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
158c7f05 336 int *lambda_table;
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337 int adaptive_quant; ///< use adaptive quantization
338 int dquant; ///< qscale difference to prev qscale
975a1447 339 int pict_type; ///< AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
14e2a940 340 int last_pict_type; //FIXME removes
115329f1 341 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
ba0c8981 342 int droppable;
de6d9b64 343 int frame_rate_index;
88e51e1f 344 int last_lambda_for[5]; ///< last lambda for a specific pict type
c52f5d66 345 int skipdct; ///< skip dct and code zero residual
5e5c247a 346
de6d9b64 347 /* motion compensation */
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348 int unrestricted_mv; ///< mv can point outside of the coded picture
349 int h263_long_vectors; ///< use horrible h263v1 long vector mode
277f4827 350
e74433a8 351 BlockDSPContext bdsp;
a9aee08d 352 FDCTDSPContext fdsp;
f4fed5a2 353 HpelDSPContext hdsp;
e3fcb143 354 IDCTDSPContext idsp;
2d604443 355 MECmpContext mecc;
fab9df63 356 MpegVideoDSPContext mdsp;
8d686ca5 357 MpegvideoEncDSPContext mpvencdsp;
f46bb608 358 PixblockDSPContext pdsp;
368f5035 359 QpelDSPContext qdsp;
8c53d39e 360 VideoDSPContext vdsp;
0338c396 361 H263DSPContext h263dsp;
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362 int f_code; ///< forward MV resolution
363 int b_code; ///< backward MV resolution for B Frames (mpeg4)
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364 int16_t (*p_mv_table_base)[2];
365 int16_t (*b_forw_mv_table_base)[2];
366 int16_t (*b_back_mv_table_base)[2];
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367 int16_t (*b_bidir_forw_mv_table_base)[2];
368 int16_t (*b_bidir_back_mv_table_base)[2];
7bc9090a 369 int16_t (*b_direct_mv_table_base)[2];
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370 int16_t (*p_field_mv_table_base[2][2])[2];
371 int16_t (*b_field_mv_table_base[2][2][2])[2];
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372 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
373 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
374 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
375 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
376 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
377 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
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378 int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
379 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
380 uint8_t (*p_field_select_table[2]);
381 uint8_t (*b_field_select_table[2][2]);
115329f1 382 int me_method; ///< ME algorithm
de6d9b64 383 int mv_dir;
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384#define MV_DIR_FORWARD 1
385#define MV_DIR_BACKWARD 2
277f4827 386#define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
de6d9b64 387 int mv_type;
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388#define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
389#define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
390#define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
391#define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
392#define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
393 /**motion vectors for a macroblock
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394 first coordinate : 0 = forward 1 = backward
395 second " : depend on type
396 third " : 0 = x, 1 = y
397 */
398 int mv[2][4][2];
399 int field_select[2][2];
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400 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
401 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
841f65f2 402 int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
115329f1 403
1457ab52 404 MotionEstContext me;
de6d9b64 405
115329f1 406 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
e42dba48 407 for b-frames rounding mode is always 0 */
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408
409 /* macroblock layer */
410 int mb_x, mb_y;
9b8709d1 411 int mb_skip_run;
de6d9b64 412 int mb_intra;
e0c16e4e 413 uint16_t *mb_type; ///< Table for candidate MB types for encoding (defines in mpegutils.h)
2f16af06 414
277f4827 415 int block_index[6]; ///< index to current MB in block based arrays with edges
4278e7a6 416 int block_wrap[6];
7d1c3fc1 417 uint8_t *dest[3];
115329f1 418
7bc9090a 419 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
4278e7a6 420
277f4827 421 /** matrix transmitted in the bitstream */
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422 uint16_t intra_matrix[64];
423 uint16_t chroma_intra_matrix[64];
424 uint16_t inter_matrix[64];
425 uint16_t chroma_inter_matrix[64];
2b6ab3a2 426
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427 int intra_quant_bias; ///< bias for the quantizer
428 int inter_quant_bias; ///< bias for the quantizer
429 int min_qcoeff; ///< minimum encodable coefficient
430 int max_qcoeff; ///< maximum encodable coefficient
431 int ac_esc_length; ///< num of bits needed to encode the longest esc
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432 uint8_t *intra_ac_vlc_length;
433 uint8_t *intra_ac_vlc_last_length;
434 uint8_t *inter_ac_vlc_length;
435 uint8_t *inter_ac_vlc_last_length;
67725183 436 uint8_t *luma_dc_vlc_length;
c442d75c 437#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
477ab036 438
2d974017 439 int coded_score[8];
f2f6134b 440
277f4827 441 /** precomputed matrix (combine qscale and DCT renorm) */
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442 int (*q_intra_matrix)[64];
443 int (*q_inter_matrix)[64];
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444 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
445 uint16_t (*q_intra_matrix16)[2][64];
446 uint16_t (*q_inter_matrix16)[2][64];
115329f1 447
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448 /* noise reduction */
449 int (*dct_error_sum)[64];
450 int dct_count[2];
451 uint16_t (*dct_offset)[64];
de6d9b64 452
de6d9b64 453 /* bit rate control */
0c1a9eda 454 int64_t total_bits;
115329f1 455 int frame_bits; ///< bits used for the current frame
07506002 456 int next_lambda; ///< next lambda used for retrying to encode a frame
277f4827 457 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
9cdd6a24 458
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459 /* statistics, used for 2-pass encoding */
460 int mv_bits;
461 int header_bits;
462 int i_tex_bits;
463 int p_tex_bits;
464 int i_count;
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465 int f_count;
466 int b_count;
098eefe1 467 int skip_count;
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468 int misc_bits; ///< cbp, mb_type
469 int last_bits; ///< temp var used for calculating the above vars
115329f1 470
7f2fe444 471 /* error concealment / resync */
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472 int resync_mb_x; ///< x position of last resync marker
473 int resync_mb_y; ///< y position of last resync marker
474 GetBitContext last_resync_gb; ///< used to search for the next resync marker
277f4827 475 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
115329f1 476 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
5b22d6e1 477 int err_recognition;
115329f1 478
d7425f59 479 ParseContext parse_context;
098eefe1 480
102d3908 481 /* H.263 specific */
644d98a4 482 int gob_index;
dba019da 483 int obmc; ///< overlapped block motion compensation
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484 int mb_info; ///< interval for outputting info about mb offsets as side data
485 int prev_mb_info, last_mb_info;
486 uint8_t *mb_info_ptr;
487 int mb_info_size;
115329f1 488
544286b3 489 /* H.263+ specific */
115329f1 490 int umvplus; ///< == H263+ && unrestricted_mv
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491 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
492 int h263_slice_structured;
dba019da 493 int alt_inter_vlc; ///< alternative inter vlc
68b94c35 494 int modified_quant;
115329f1 495 int loop_filter;
b056e73c 496 int custom_pcf;
115329f1 497
de6d9b64 498 /* mpeg4 specific */
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499 ///< number of bits to represent the fractional part of time (encoder only)
500 int time_increment_bits;
9dbcbd92 501 int last_time_base;
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502 int time_base; ///< time in seconds of last I,P,S Frame
503 int64_t time; ///< time of current frame
0c1a9eda 504 int64_t last_non_b_time;
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505 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
506 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
0c1a9eda 507 uint16_t pp_field_time;
115329f1 508 uint16_t pb_field_time; ///< like above, just for interlaced
44eb4951 509 int real_sprite_warping_points;
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510 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
511 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
73c8e514 512 int mcsel;
1a565432 513 int quant_precision;
115329f1 514 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
0da71265 515 int aspect_ratio_info; //FIXME remove
cc9ba006 516 int sprite_warping_accuracy;
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517 int data_partitioning; ///< data partitioning flag from header
518 int partitioned_frame; ///< is current frame partitioned
115329f1 519 int low_delay; ///< no reordering needed / has no b-frames
1ff662cc 520 int vo_type;
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521 PutBitContext tex_pb; ///< used for data partitioned VOPs
522 PutBitContext pb2; ///< used for data partitioned VOPs
d930ef19 523 int mpeg_quant;
115329f1 524 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
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525
526 /* divx specific, used to workaround (many) bugs in divx5 */
d5a21172 527 int divx_packed;
0c1a9eda 528 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
eec1c6b9 529 int bitstream_buffer_size;
f038fe8b 530 unsigned int allocated_bitstream_buffer_size;
115329f1 531
de6d9b64 532 /* RV10 specific */
115329f1 533 int rv10_version; ///< RV10 version: 0 or 3
de6d9b64 534 int rv10_first_dc_coded[3];
115329f1 535
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536 /* MJPEG specific */
537 struct MJpegContext *mjpeg_ctx;
538
539 /* MSMPEG4 specific */
540 int mv_table_index;
541 int rl_table_index;
542 int rl_chroma_table_index;
543 int dc_table_index;
544 int use_skip_mb_code;
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545 int slice_height; ///< in macroblocks
546 int first_slice_line; ///< used in mpeg4 too to handle resync markers
ae40484c 547 int flipflop_rounding;
277f4827 548 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
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549 int per_mb_rl_table;
550 int esc3_level_length;
551 int esc3_run_length;
277f4827 552 /** [mb_intra][isChroma][level][run][last] */
6b460aa3 553 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
de0f2f4c 554 int inter_intra_pred;
1457ab52 555 int mspel;
0151a6f5 556
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557 /* decompression specific */
558 GetBitContext gb;
559
1e491e29 560 /* Mpeg1 specific */
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561 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
562 int last_mv_dir; ///< last mv_dir, used for b frame encoding
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563 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
564
7eb2d654 565 /* MPEG-2-specific - I wished not to have to support this mess. */
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566 int progressive_sequence;
567 int mpeg_f_code[2][2];
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568
569 // picture structure defines are loaded from mpegutils.h
de6d9b64 570 int picture_structure;
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571
572 int intra_dc_precision;
573 int frame_pred_frame_dct;
574 int top_field_first;
575 int concealment_motion_vectors;
576 int q_scale_type;
577 int intra_vlc_format;
578 int alternate_scan;
579 int repeat_first_field;
580 int chroma_420_type;
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581 int chroma_format;
582#define CHROMA_420 1
583#define CHROMA_422 2
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584 int chroma_x_shift;//depend on pix_format, that depend on chroma_format
585 int chroma_y_shift;
5e5c247a 586
de6d9b64 587 int progressive_frame;
cd8c64e1 588 int full_pel[2];
de6d9b64 589 int interlaced_dct;
c3bf0288 590 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
2c5e1efc 591 int drop_frame_timecode; ///< timecode is in drop frame format.
aed79007 592 int scan_offset; ///< reserve space for SVCD scan offset user data.
ba58dabc 593
644d98a4 594 /* RTP specific */
e4eadb4b 595 int rtp_mode;
115329f1 596
0c1a9eda 597 uint8_t *ptr_lastgob;
88bd7fdc 598 int16_t (*pblocks[12])[64];
115329f1 599
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600 int16_t (*block)[64]; ///< points to one of the following blocks
601 int16_t (*blocks)[8][64]; // for HQ mode we need to keep the best block
602 int (*decode_mb)(struct MpegEncContext *s, int16_t block[6][64]); // used by some codecs to avoid a switch()
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603#define SLICE_OK 0
604#define SLICE_ERROR -1
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605#define SLICE_END -2 ///<end marker found
606#define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
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607
608 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
88bd7fdc 609 int16_t *block/*align 16*/, int n, int qscale);
115329f1 610 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
88bd7fdc 611 int16_t *block/*align 16*/, int n, int qscale);
115329f1 612 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
88bd7fdc 613 int16_t *block/*align 16*/, int n, int qscale);
115329f1 614 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
88bd7fdc 615 int16_t *block/*align 16*/, int n, int qscale);
115329f1 616 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
88bd7fdc 617 int16_t *block/*align 16*/, int n, int qscale);
115329f1 618 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
88bd7fdc 619 int16_t *block/*align 16*/, int n, int qscale);
d50635cd 620 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
88bd7fdc 621 int16_t *block/*align 16*/, int n, int qscale);
d50635cd 622 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
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DB
623 int16_t *block/*align 16*/, int n, int qscale);
624 int (*dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
625 int (*fast_dct_quantize)(struct MpegEncContext *s, int16_t *block/*align 16*/, int n, int qscale, int *overflow);
626 void (*denoise_dct)(struct MpegEncContext *s, int16_t *block);
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627
628 int mpv_flags; ///< flags set by private options
23bfcc06 629 int quantizer_noise_shaping;
89b81a1c 630
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631 /* temp buffers for rate control */
632 float *cplx_tab, *bits_tab;
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633
634 /* flag to indicate a reinitialization is required, e.g. after
635 * a frame size change */
636 int context_reinit;
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637
638 ERContext er;
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639
640 int error_rate;
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641
642 /* temporary frames used by b_frame_strategy = 2 */
643 AVFrame *tmp_frames[MAX_B_FRAMES + 2];
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644} MpegEncContext;
645
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646#define REBASE_PICTURE(pic, new_ctx, old_ctx) \
647 ((pic && pic >= old_ctx->picture && \
759001c5 648 pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \
d9df93ef 649 &new_ctx->picture[pic - old_ctx->picture] : NULL)
4d2858de 650
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651/* mpegvideo_enc common options */
652#define FF_MPV_FLAG_SKIP_RD 0x0001
a249f0cc 653#define FF_MPV_FLAG_STRICT_GOP 0x0002
ff71a383 654#define FF_MPV_FLAG_QP_RD 0x0004
af3d804f 655#define FF_MPV_FLAG_CBP_RD 0x0008
b2c31710 656#define FF_MPV_FLAG_NAQ 0x0010
a2941c8c 657#define FF_MPV_FLAG_MV0 0x0020
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658
659#define FF_MPV_OFFSET(x) offsetof(MpegEncContext, x)
660#define FF_MPV_OPT_FLAGS (AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM)
661#define FF_MPV_COMMON_OPTS \
d58dd4b5 662{ "mpv_flags", "Flags common for all mpegvideo-based encoders.", FF_MPV_OFFSET(mpv_flags), AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS, "mpv_flags" },\
124134e4
MS
663{ "skip_rd", "RD optimal MB level residual skipping", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_SKIP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
664{ "strict_gop", "Strictly enforce gop size", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_STRICT_GOP }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
665{ "qp_rd", "Use rate distortion optimization for qp selection", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_QP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
666{ "cbp_rd", "use rate distortion optimization for CBP", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_CBP_RD }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
b2c31710 667{ "naq", "normalize adaptive quantization", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_NAQ }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
a2941c8c 668{ "mv0", "always try a mb with mv=<0,0>", 0, AV_OPT_TYPE_CONST, { .i64 = FF_MPV_FLAG_MV0 }, 0, 0, FF_MPV_OPT_FLAGS, "mpv_flags" },\
63efd83a 669{ "luma_elim_threshold", "single coefficient elimination threshold for luminance (negative values also consider dc coefficient)",\
e6153f17 670 FF_MPV_OFFSET(luma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
63efd83a 671{ "chroma_elim_threshold", "single coefficient elimination threshold for chrominance (negative values also consider dc coefficient)",\
e6153f17 672 FF_MPV_OFFSET(chroma_elim_threshold), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, FF_MPV_OPT_FLAGS },\
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673{ "quantizer_noise_shaping", NULL, FF_MPV_OFFSET(quantizer_noise_shaping), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },\
674{ "error_rate", "Simulate errors in the bitstream to test error concealment.", \
675 FF_MPV_OFFSET(error_rate), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FF_MPV_OPT_FLAGS },
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676
677extern const AVOption ff_mpv_generic_options[];
678
679#define FF_MPV_GENERIC_CLASS(name) \
680static const AVClass name ## _class = {\
681 .class_name = #name " encoder",\
682 .item_name = av_default_item_name,\
683 .option = ff_mpv_generic_options,\
684 .version = LIBAVUTIL_VERSION_INT,\
685};
686
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687/**
688 * Set the given MpegEncContext to common defaults (same for encoding
689 * and decoding). The changed fields will not depend upon the prior
690 * state of the MpegEncContext.
691 */
692void ff_MPV_common_defaults(MpegEncContext *s);
693
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MS
694void ff_MPV_decode_defaults(MpegEncContext *s);
695int ff_MPV_common_init(MpegEncContext *s);
435c0b87 696int ff_MPV_common_frame_size_change(MpegEncContext *s);
efd29844 697void ff_MPV_common_end(MpegEncContext *s);
88bd7fdc 698void ff_MPV_decode_mb(MpegEncContext *s, int16_t block[12][64]);
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699int ff_MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
700void ff_MPV_frame_end(MpegEncContext *s);
701int ff_MPV_encode_init(AVCodecContext *avctx);
702int ff_MPV_encode_end(AVCodecContext *avctx);
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703int ff_MPV_encode_picture(AVCodecContext *avctx, AVPacket *pkt,
704 const AVFrame *frame, int *got_packet);
d211547d 705void ff_MPV_encode_init_x86(MpegEncContext *s);
dc402854 706void ff_MPV_common_init_x86(MpegEncContext *s);
efd29844 707void ff_MPV_common_init_arm(MpegEncContext *s);
16e66522 708void ff_MPV_common_init_neon(MpegEncContext *s);
38282149 709void ff_MPV_common_init_ppc(MpegEncContext *s);
7f2fe444 710void ff_clean_intra_table_entries(MpegEncContext *s);
1d0feb5d 711void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h);
7a06ff14 712void ff_mpeg_flush(AVCodecContext *avctx);
759001c5 713void ff_print_debug_info(MpegEncContext *s, Picture *p);
191e8ca7 714void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
5f194811 715int ff_find_unused_picture(MpegEncContext *s, int shared);
88bd7fdc 716void ff_denoise_dct(MpegEncContext *s, int16_t *block);
f1d8763a 717int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
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718int ff_MPV_lowest_referenced_row(MpegEncContext *s, int dir);
719void ff_MPV_report_decode_progress(MpegEncContext *s);
6a9c8594 720int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
bb174ff1 721void ff_set_qscale(MpegEncContext * s, int qscale);
59b571c1 722
998c9f15 723void ff_mpv_idct_init(MpegEncContext *s);
5dd8c08f 724void ff_convert_matrix(MpegEncContext *s, int (*qmat)[64], uint16_t (*qmat16)[2][64],
69cea75f 725 const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
88bd7fdc 726int ff_dct_quantize_c(MpegEncContext *s, int16_t *block, int n, int qscale, int *overflow);
46b4feec 727
7d1c3fc1 728void ff_init_block_index(MpegEncContext *s);
4d2858de 729
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730void ff_MPV_motion(MpegEncContext *s,
731 uint8_t *dest_y, uint8_t *dest_cb,
732 uint8_t *dest_cr, int dir,
733 uint8_t **ref_picture,
734 op_pixels_func (*pix_op)[4],
735 qpel_mc_func (*qpix_op)[16]);
736
a4a750d3 737/**
58c42af7
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738 * Allocate a Picture.
739 * The pixels are allocated/set by calling get_buffer() if shared = 0.
a4a750d3
BC
740 */
741int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
742
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DB
743/**
744 * permute block according to permuatation.
745 * @param last last non zero element in scantable order
746 */
747void ff_block_permute(int16_t *block, uint8_t *permutation, const uint8_t *scantable, int last);
748
4d2858de 749static inline void ff_update_block_index(MpegEncContext *s){
2bcbd984 750 const int block_size = 8;
178fcca8 751
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MN
752 s->block_index[0]+=2;
753 s->block_index[1]+=2;
754 s->block_index[2]+=2;
755 s->block_index[3]+=2;
756 s->block_index[4]++;
757 s->block_index[5]++;
178fcca8
MN
758 s->dest[0]+= 2*block_size;
759 s->dest[1]+= block_size;
760 s->dest[2]+= block_size;
4d2858de
MN
761}
762
4d2a4834 763static inline int get_bits_diff(MpegEncContext *s){
fe455f33 764 const int bits= put_bits_count(&s->pb);
4d2a4834
MN
765 const int last= s->last_bits;
766
767 s->last_bits = bits;
768
769 return bits - last;
770}
4d2858de 771
00f0564f
MR
772static inline int ff_h263_round_chroma(int x){
773 static const uint8_t h263_chroma_roundtab[16] = {
774 // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
c3d0c11b 775 0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
00f0564f 776 };
c3d0c11b 777 return h263_chroma_roundtab[x & 0xf] + (x >> 3);
00f0564f
MR
778}
779
de6d9b64 780/* motion_est.c */
9dbcbd92
MN
781void ff_estimate_p_frame_motion(MpegEncContext * s,
782 int mb_x, int mb_y);
783void ff_estimate_b_frame_motion(MpegEncContext * s,
784 int mb_x, int mb_y);
785int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
786void ff_fix_long_p_mvs(MpegEncContext * s);
bb198e19
MN
787void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
788 int16_t (*mv_table)[2], int f_code, int type, int truncate);
c192426f 789int ff_init_me(MpegEncContext *s);
f5fb6b34 790int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
4bdd3b76 791int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
115329f1
DB
792 int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
793 int ref_mv_scale, int size, int h);
4bdd3b76 794int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
155ec6ed 795 int ref_index, int size, int h, int add_rate);
4d2858de 796
de6d9b64 797/* mpeg12.c */
c26ae41d 798extern const uint8_t ff_mpeg1_dc_scale_table[128];
53f66cee 799extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
de6d9b64 800
d6c8dcb8
MS
801void ff_mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
802void ff_mpeg1_encode_mb(MpegEncContext *s,
88bd7fdc 803 int16_t block[6][64],
d6c8dcb8 804 int motion_x, int motion_y);
0151a6f5 805void ff_mpeg1_encode_init(MpegEncContext *s);
9b8709d1 806void ff_mpeg1_encode_slice_header(MpegEncContext *s);
de6d9b64 807
c26ae41d 808extern const uint8_t ff_aic_dc_scale_table[32];
332f9ac4 809extern const uint8_t ff_h263_chroma_qscale_table[32];
68b94c35 810
de6d9b64 811/* rv10.c */
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MS
812void ff_rv10_encode_picture_header(MpegEncContext *s, int picture_number);
813int ff_rv_decode_dc(MpegEncContext *s, int n);
814void ff_rv20_encode_picture_header(MpegEncContext *s, int picture_number);
de6d9b64 815
4d2858de 816
de6d9b64 817/* msmpeg4.c */
04d38225
MS
818void ff_msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
819void ff_msmpeg4_encode_ext_header(MpegEncContext * s);
820void ff_msmpeg4_encode_mb(MpegEncContext * s,
88bd7fdc 821 int16_t block[6][64],
04d38225
MS
822 int motion_x, int motion_y);
823int ff_msmpeg4_decode_picture_header(MpegEncContext * s);
824int ff_msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
261a3c2d 825int ff_msmpeg4_decode_init(AVCodecContext *avctx);
0151a6f5 826void ff_msmpeg4_encode_init(MpegEncContext *s);
1457ab52 827int ff_wmv2_decode_picture_header(MpegEncContext * s);
b1609412 828int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
88bd7fdc 829void ff_wmv2_add_mb(MpegEncContext *s, int16_t block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
1457ab52 830void ff_mspel_motion(MpegEncContext *s,
0c1a9eda
ZK
831 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
832 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
1457ab52
MN
833 int motion_x, int motion_y, int h);
834int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
115329f1 835void ff_wmv2_encode_mb(MpegEncContext * s,
88bd7fdc 836 int16_t block[6][64],
1457ab52 837 int motion_x, int motion_y);
de6d9b64 838
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839int ff_mpeg_ref_picture(MpegEncContext *s, Picture *dst, Picture *src);
840void ff_mpeg_unref_picture(MpegEncContext *s, Picture *picture);
0b0a7a75 841void ff_free_picture_tables(Picture *pic);
759001c5 842
98790382 843#endif /* AVCODEC_MPEGVIDEO_H */