2 * Generic DCT based hybrid video encoder
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
4 * Copyright (c) 2002-2004 Michael Niedermayer
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #ifndef AVCODEC_MPEGVIDEO_H
29 #define AVCODEC_MPEGVIDEO_H
32 #include "bitstream.h"
33 #include "ratecontrol.h"
35 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
47 #define MPEG_BUF_SIZE (16 * 1024)
49 #define QMAT_SHIFT_MMX 16
57 #define MAX_PICTURE_COUNT 32
59 #define ME_MAP_SIZE 64
60 #define ME_MAP_SHIFT 3
61 #define ME_MAP_MV_BITS 11
63 /* run length table */
67 #define I_TYPE FF_I_TYPE ///< Intra
68 #define P_TYPE FF_P_TYPE ///< Predicted
69 #define B_TYPE FF_B_TYPE ///< Bi-dir predicted
70 #define S_TYPE FF_S_TYPE ///< S(GMC)-VOP MPEG4
71 #define SI_TYPE FF_SI_TYPE ///< Switching Intra
72 #define SP_TYPE FF_SP_TYPE ///< Switching Predicted
74 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
76 #define INPLACE_OFFSET 16
81 typedef struct ScanTable{
82 const uint8_t *scantable;
83 uint8_t permutated[64];
84 uint8_t raster_end[64];
86 /** Used by dct_quantise_alitvec to find last-non-zero */
87 DECLARE_ALIGNED_8(uint8_t, inverse[64]);
94 typedef struct Picture{
98 * halfpel luma planes.
100 uint8_t *interpolated[3];
101 int16_t (*motion_val_base[2])[2];
102 uint32_t *mb_type_base;
103 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if theres just one type
104 #define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
105 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
106 #define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
107 #define IS_INTRA(a) ((a)&7)
108 #define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
109 #define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
110 #define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
111 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
112 #define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
113 #define IS_GMC(a) ((a)&MB_TYPE_GMC)
114 #define IS_16X16(a) ((a)&MB_TYPE_16x16)
115 #define IS_16X8(a) ((a)&MB_TYPE_16x8)
116 #define IS_8X16(a) ((a)&MB_TYPE_8x16)
117 #define IS_8X8(a) ((a)&MB_TYPE_8x8)
118 #define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
119 #define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
120 #define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
121 #define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
122 #define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
123 #define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
124 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
125 #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
126 #define HAS_CBP(a) ((a)&MB_TYPE_CBP)
128 int field_poc[2]; ///< h264 top/bottom POC
129 int poc; ///< h264 frame POC
130 int frame_num; ///< h264 frame_num
131 int pic_id; ///< h264 pic_num or long_term_pic_idx
132 int long_ref; ///< 1->long term reference 0->short term reference
133 int ref_poc[2][16]; ///< h264 POCs of the frames used as reference
134 int ref_count[2]; ///< number of entries in ref_poc
136 int mb_var_sum; ///< sum of MB variance for current frame
137 int mc_mb_var_sum; ///< motion compensated MB variance for current frame
138 uint16_t *mb_var; ///< Table for MB variances
139 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
140 uint8_t *mb_mean; ///< Table for MB luminance
141 int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decision FIXME remove
142 int b_frame_score; /* */
145 typedef struct ParseContext{
149 unsigned int buffer_size;
150 uint32_t state; ///< contains the last few bytes in MSB order
151 int frame_start_found;
152 int overread; ///< the number of bytes which where irreversibly read from the next frame
153 int overread_index; ///< the index into ParseContext.buffer of the overreaded bytes
156 struct MpegEncContext;
159 * Motion estimation context.
161 typedef struct MotionEstContext{
162 AVCodecContext *avctx;
163 int skip; ///< set if ME is skipped for the current MB
164 int co_located_mv[4][2]; ///< mv from last p frame for direct mode ME
165 int direct_basis_mv[4][2];
166 uint8_t *scratchpad; ///< data area for the me algo, so that the ME doesnt need to malloc/free
171 uint32_t *map; ///< map to avoid duplicate evaluations
172 uint32_t *score_map; ///< map to store the scores
174 int pre_penalty_factor;
176 int sub_penalty_factor;
177 int mb_penalty_factor;
181 int pre_pass; ///< = 1 for the pre pass
193 /* temp variables for picture complexity calculation */
194 int mc_mb_var_sum_temp;
196 int scene_change_score;
197 /* cmp, chroma_cmp;*/
198 op_pixels_func (*hpel_put)[4];
199 op_pixels_func (*hpel_avg)[4];
200 qpel_mc_func (*qpel_put)[16];
201 qpel_mc_func (*qpel_avg)[16];
202 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
203 uint8_t *current_mv_penalty;
204 int (*sub_motion_search)(struct MpegEncContext * s,
205 int *mx_ptr, int *my_ptr, int dmin,
206 int src_index, int ref_index,
213 typedef struct MpegEncContext {
214 struct AVCodecContext *avctx;
215 /* the following parameters must be initialized before encoding */
216 int width, height;///< picture size. must be a multiple of 16
218 int intra_only; ///< if true, only intra pictures are generated
219 int bit_rate; ///< wanted bit rate
220 enum OutputFormat out_format; ///< output format
221 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
223 /* the following codec id fields are deprecated in favor of codec_id */
224 int h263_plus; ///< h263 plus headers
225 int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
226 int h263_flv; ///< use flv h263 header
228 enum CodecID codec_id; /* see CODEC_ID_xxx */
229 int fixed_qscale; ///< fixed qscale if non zero
230 int encoding; ///< true if we are encoding (vs decoding)
231 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
232 int flags2; ///< AVCodecContext.flags2
233 int max_b_frames; ///< max number of b-frames for encoding
234 int luma_elim_threshold;
235 int chroma_elim_threshold;
236 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
237 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
238 /* the following fields are managed internally by the encoder */
243 /* sequence parameters */
244 int context_initialized;
245 int input_picture_number; ///< used to set pic->display_picture_number, shouldnt be used for/by anything else
246 int coded_picture_number; ///< used to set pic->coded_picture_number, shouldnt be used for/by anything else
247 int picture_number; //FIXME remove, unclear definition
248 int picture_in_gop_number; ///< 0-> first pic in gop, ...
249 int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
250 int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
251 int mb_width, mb_height; ///< number of MBs horizontally & vertically
252 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
253 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
254 int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
255 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
256 int mb_num; ///< number of MBs of a picture
257 int linesize; ///< line size, in bytes, may be different from width
258 int uvlinesize; ///< line size, for chroma in bytes, may be different from width
259 Picture *picture; ///< main picture buffer
260 Picture **input_picture; ///< next pictures on display order for encoding
261 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
263 int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
264 int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
265 struct MpegEncContext *thread_context[MAX_THREADS];
268 * copy of the previous picture structure.
269 * note, linesize & data, might not match the previous picture (for field pictures)
271 Picture last_picture;
274 * copy of the next picture structure.
275 * note, linesize & data, might not match the next picture (for field pictures)
277 Picture next_picture;
280 * copy of the source picture structure for encoding.
281 * note, linesize & data, might not match the source picture (for field pictures)
286 * copy of the current picture structure.
287 * note, linesize & data, might not match the current picture (for field pictures)
289 Picture current_picture; ///< buffer to store the decompressed current picture
291 Picture *last_picture_ptr; ///< pointer to the previous picture.
292 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
293 Picture *current_picture_ptr; ///< pointer to the current picture
294 uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
295 int last_dc[3]; ///< last DC values for MPEG1
296 int16_t *dc_val_base;
297 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
298 int16_t dc_cache[4*5];
299 int y_dc_scale, c_dc_scale;
300 const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
301 const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
302 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
303 uint8_t *coded_block_base;
304 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
305 int16_t (*ac_val_base)[16];
306 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
308 uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
309 #define PREV_PICT_TYPES_BUFFER_SIZE 256
310 int mb_skipped; ///< MUST BE SET only during DECODING
311 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
312 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
313 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
314 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
315 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
316 uint8_t *allocated_edge_emu_buffer;
317 uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
318 uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
319 uint8_t *obmc_scratchpad;
320 uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
323 int chroma_qscale; ///< chroma QP
324 int lambda; ///< lagrange multipler used in rate distortion
325 int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
327 int adaptive_quant; ///< use adaptive quantization
328 int dquant; ///< qscale difference to prev qscale
329 int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
330 int last_pict_type; //FIXME removes
331 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
333 int frame_rate_index;
334 int last_lambda_for[5]; ///< last lambda for a specific pict type
336 /* motion compensation */
337 int unrestricted_mv; ///< mv can point outside of the coded picture
338 int h263_long_vectors; ///< use horrible h263v1 long vector mode
339 int decode; ///< if 0 then decoding will be skipped (for encoding b frames for example)
341 DSPContext dsp; ///< pointers for accelerated dsp functions
342 int f_code; ///< forward MV resolution
343 int b_code; ///< backward MV resolution for B Frames (mpeg4)
344 int16_t (*p_mv_table_base)[2];
345 int16_t (*b_forw_mv_table_base)[2];
346 int16_t (*b_back_mv_table_base)[2];
347 int16_t (*b_bidir_forw_mv_table_base)[2];
348 int16_t (*b_bidir_back_mv_table_base)[2];
349 int16_t (*b_direct_mv_table_base)[2];
350 int16_t (*p_field_mv_table_base[2][2])[2];
351 int16_t (*b_field_mv_table_base[2][2][2])[2];
352 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
353 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
354 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
355 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
356 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
357 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
358 int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
359 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
360 uint8_t (*p_field_select_table[2]);
361 uint8_t (*b_field_select_table[2][2]);
362 int me_method; ///< ME algorithm
364 #define MV_DIR_BACKWARD 1
365 #define MV_DIR_FORWARD 2
366 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
368 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
369 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
370 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
371 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
372 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
373 /**motion vectors for a macroblock
374 first coordinate : 0 = forward 1 = backward
375 second " : depend on type
376 third " : 0 = x, 1 = y
379 int field_select[2][2];
380 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
381 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
382 int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
386 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
387 for b-frames rounding mode is allways 0 */
389 int hurry_up; /**< when set to 1 during decoding, b frames will be skipped
390 when set to 2 idct/dequant will be skipped too */
392 /* macroblock layer */
396 uint16_t *mb_type; ///< Table for candidate MB types for encoding
397 #define CANDIDATE_MB_TYPE_INTRA 0x01
398 #define CANDIDATE_MB_TYPE_INTER 0x02
399 #define CANDIDATE_MB_TYPE_INTER4V 0x04
400 #define CANDIDATE_MB_TYPE_SKIPPED 0x08
401 //#define MB_TYPE_GMC 0x10
403 #define CANDIDATE_MB_TYPE_DIRECT 0x10
404 #define CANDIDATE_MB_TYPE_FORWARD 0x20
405 #define CANDIDATE_MB_TYPE_BACKWARD 0x40
406 #define CANDIDATE_MB_TYPE_BIDIR 0x80
408 #define CANDIDATE_MB_TYPE_INTER_I 0x100
409 #define CANDIDATE_MB_TYPE_FORWARD_I 0x200
410 #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
411 #define CANDIDATE_MB_TYPE_BIDIR_I 0x800
413 int block_index[6]; ///< index to current MB in block based arrays with edges
417 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
419 /** matrix transmitted in the bitstream */
420 uint16_t intra_matrix[64];
421 uint16_t chroma_intra_matrix[64];
422 uint16_t inter_matrix[64];
423 uint16_t chroma_inter_matrix[64];
424 #define QUANT_BIAS_SHIFT 8
425 int intra_quant_bias; ///< bias for the quantizer
426 int inter_quant_bias; ///< bias for the quantizer
427 int min_qcoeff; ///< minimum encodable coefficient
428 int max_qcoeff; ///< maximum encodable coefficient
429 int ac_esc_length; ///< num of bits needed to encode the longest esc
430 uint8_t *intra_ac_vlc_length;
431 uint8_t *intra_ac_vlc_last_length;
432 uint8_t *inter_ac_vlc_length;
433 uint8_t *inter_ac_vlc_last_length;
434 uint8_t *luma_dc_vlc_length;
435 uint8_t *chroma_dc_vlc_length;
436 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
440 /** precomputed matrix (combine qscale and DCT renorm) */
441 int (*q_intra_matrix)[64];
442 int (*q_inter_matrix)[64];
443 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
444 uint16_t (*q_intra_matrix16)[2][64];
445 uint16_t (*q_inter_matrix16)[2][64];
446 int block_last_index[12]; ///< last non zero coefficient in block
448 DECLARE_ALIGNED_8(ScanTable, intra_scantable);
449 ScanTable intra_h_scantable;
450 ScanTable intra_v_scantable;
451 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
453 /* noise reduction */
454 int (*dct_error_sum)[64];
456 uint16_t (*dct_offset)[64];
458 void *opaque; ///< private data for the user
460 /* bit rate control */
463 int frame_bits; ///< bits used for the current frame
464 int next_lambda; ///< next lambda used for retrying to encode a frame
465 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
467 /* statistics, used for 2-pass encoding */
476 int misc_bits; ///< cbp, mb_type
477 int last_bits; ///< temp var used for calculating the above vars
479 /* error concealment / resync */
481 uint8_t *error_status_table; ///< table of the error status of each MB
482 #define VP_START 1 ///< current MB is the first after a resync marker
491 int resync_mb_x; ///< x position of last resync marker
492 int resync_mb_y; ///< y position of last resync marker
493 GetBitContext last_resync_gb; ///< used to search for the next resync marker
494 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
495 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
496 int error_resilience;
498 ParseContext parse_context;
502 int obmc; ///< overlapped block motion compensation
504 /* H.263+ specific */
505 int umvplus; ///< == H263+ && unrestricted_mv
506 int h263_aic; ///< Advanded INTRA Coding (AIC)
507 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
508 int h263_slice_structured;
509 int alt_inter_vlc; ///< alternative inter vlc
515 int time_increment_bits; ///< number of bits to represent the fractional part of time
517 int time_base; ///< time in seconds of last I,P,S Frame
518 int64_t time; ///< time of current frame
519 int64_t last_non_b_time;
520 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
521 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
522 uint16_t pp_field_time;
523 uint16_t pb_field_time; ///< like above, just for interlaced
525 int vol_sprite_usage;
530 int sprite_brightness_change;
531 int num_sprite_warping_points;
532 int real_sprite_warping_points;
533 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
534 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
535 int sprite_shift[2]; ///< sprite shift [isChroma]
538 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
541 int enhancement_type;
544 int aspect_ratio_info; //FIXME remove
545 int sprite_warping_accuracy;
546 int low_latency_sprite;
547 int data_partitioning; ///< data partitioning flag from header
548 int partitioned_frame; ///< is current frame partitioned
549 int rvlc; ///< reversible vlc
550 int resync_marker; ///< could this stream contain resync markers
551 int low_delay; ///< no reordering needed / has no b-frames
553 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
554 int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
555 int use_intra_dc_vlc;
556 PutBitContext tex_pb; ///< used for data partitioned VOPs
557 PutBitContext pb2; ///< used for data partitioned VOPs
559 int t_frame; ///< time distance of first I -> B, used for interlaced b frames
560 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
562 /* divx specific, used to workaround (many) bugs in divx5 */
566 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
567 int bitstream_buffer_size;
568 unsigned int allocated_bitstream_buffer_size;
572 /* lavc specific stuff, used to workaround bugs in libavcodec */
576 int rv10_version; ///< RV10 version: 0 or 3
577 int rv10_first_dc_coded[3];
580 struct MJpegContext *mjpeg_ctx;
581 int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
582 int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
583 int mjpeg_write_tables; ///< do we want to have quantisation- and huffmantables in the jpeg file ?
584 int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers
586 /* MSMPEG4 specific */
589 int rl_chroma_table_index;
591 int use_skip_mb_code;
592 int slice_height; ///< in macroblocks
593 int first_slice_line; ///< used in mpeg4 too to handle resync markers
594 int flipflop_rounding;
595 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
597 int esc3_level_length;
599 /** [mb_intra][isChroma][level][run][last] */
600 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
601 int inter_intra_pred;
604 /* decompression specific */
608 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
609 int last_mv_dir; ///< last mv_dir, used for b frame encoding
610 int broken_link; ///< no_output_of_prior_pics_flag
611 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
613 /* MPEG2 specific - I wish I had not to support this mess. */
614 int progressive_sequence;
615 int mpeg_f_code[2][2];
616 int picture_structure;
618 #define PICT_TOP_FIELD 1
619 #define PICT_BOTTOM_FIELD 2
622 int intra_dc_precision;
623 int frame_pred_frame_dct;
625 int concealment_motion_vectors;
627 int intra_vlc_format;
629 int repeat_first_field;
635 int chroma_x_shift;//depend on pix_format, that depend on chroma_format
638 int progressive_frame;
642 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
647 uint8_t *ptr_lastgob;
648 int swap_uv;//vcr2 codec is mpeg2 varint with UV swaped
651 DCTELEM (*block)[64]; ///< points to one of the following blocks
652 DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
653 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
655 #define SLICE_ERROR -1
656 #define SLICE_END -2 ///<end marker found
657 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
659 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
660 DCTELEM *block/*align 16*/, int n, int qscale);
661 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
662 DCTELEM *block/*align 16*/, int n, int qscale);
663 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
664 DCTELEM *block/*align 16*/, int n, int qscale);
665 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
666 DCTELEM *block/*align 16*/, int n, int qscale);
667 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
668 DCTELEM *block/*align 16*/, int n, int qscale);
669 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
670 DCTELEM *block/*align 16*/, int n, int qscale);
671 void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
672 DCTELEM *block/*align 16*/, int n, int qscale);
673 void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
674 DCTELEM *block/*align 16*/, int n, int qscale);
675 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
676 DCTELEM *block/*align 16*/, int n, int qscale);
677 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
678 DCTELEM *block/*align 16*/, int n, int qscale);
679 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
680 int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
681 void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
685 int DCT_common_init(MpegEncContext *s);
686 void MPV_decode_defaults(MpegEncContext *s);
687 int MPV_common_init(MpegEncContext *s);
688 void MPV_common_end(MpegEncContext *s);
689 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
690 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
691 void MPV_frame_end(MpegEncContext *s);
692 int MPV_encode_init(AVCodecContext *avctx);
693 int MPV_encode_end(AVCodecContext *avctx);
694 int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
696 void MPV_common_init_mmx(MpegEncContext *s);
699 void MPV_common_init_axp(MpegEncContext *s);
702 void MPV_common_init_mlib(MpegEncContext *s);
705 void MPV_common_init_mmi(MpegEncContext *s);
708 void MPV_common_init_armv4l(MpegEncContext *s);
711 void MPV_common_init_ppc(MpegEncContext *s);
713 extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
714 void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
715 void ff_clean_intra_table_entries(MpegEncContext *s);
716 void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
717 void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
718 void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
719 int src_x, int src_y, int w, int h);
720 #define END_NOT_FOUND -100
721 int ff_combine_frame(ParseContext *pc, int next, uint8_t **buf, int *buf_size);
722 void ff_parse_close(AVCodecParserContext *s);
723 void ff_mpeg_flush(AVCodecContext *avctx);
724 void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
725 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
726 int ff_find_unused_picture(MpegEncContext *s, int shared);
727 void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
728 void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
729 const uint8_t *ff_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
731 void ff_er_frame_start(MpegEncContext *s);
732 void ff_er_frame_end(MpegEncContext *s);
733 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
736 extern enum PixelFormat ff_yuv420p_list[2];
738 void ff_init_block_index(MpegEncContext *s);
740 static inline void ff_update_block_index(MpegEncContext *s){
741 const int block_size= 8>>s->avctx->lowres;
743 s->block_index[0]+=2;
744 s->block_index[1]+=2;
745 s->block_index[2]+=2;
746 s->block_index[3]+=2;
749 s->dest[0]+= 2*block_size;
750 s->dest[1]+= block_size;
751 s->dest[2]+= block_size;
754 static inline int get_bits_diff(MpegEncContext *s){
755 const int bits= put_bits_count(&s->pb);
756 const int last= s->last_bits;
764 void ff_estimate_p_frame_motion(MpegEncContext * s,
766 void ff_estimate_b_frame_motion(MpegEncContext * s,
768 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
769 void ff_fix_long_p_mvs(MpegEncContext * s);
770 void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
771 int16_t (*mv_table)[2], int f_code, int type, int truncate);
772 void ff_init_me(MpegEncContext *s);
773 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
774 inline int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
775 int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
776 int ref_mv_scale, int size, int h);
777 inline int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
778 int ref_index, int size, int h, int add_rate);
781 extern const uint16_t ff_mpeg1_default_intra_matrix[64];
782 extern const uint16_t ff_mpeg1_default_non_intra_matrix[64];
783 extern const uint8_t ff_mpeg1_dc_scale_table[128];
785 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
786 void mpeg1_encode_mb(MpegEncContext *s,
787 DCTELEM block[6][64],
788 int motion_x, int motion_y);
789 void ff_mpeg1_encode_init(MpegEncContext *s);
790 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
791 void ff_mpeg1_clean_buffers(MpegEncContext *s);
792 int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
796 typedef struct RLTable {
797 int n; ///< number of entries of table_vlc minus 1
798 int last; ///< number of values for last = 0
799 const uint16_t (*table_vlc)[2];
800 const int8_t *table_run;
801 const int8_t *table_level;
802 uint8_t *index_run[2]; ///< encoding only
803 int8_t *max_level[2]; ///< encoding & decoding
804 int8_t *max_run[2]; ///< encoding & decoding
805 VLC vlc; ///< decoding only deprected FIXME remove
806 RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
809 void init_rl(RLTable *rl, int use_static);
810 void init_vlc_rl(RLTable *rl, int use_static);
812 static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
815 index = rl->index_run[last][run];
818 if (level > rl->max_level[last][run])
820 return index + level - 1;
823 extern const uint8_t ff_mpeg4_y_dc_scale_table[32];
824 extern const uint8_t ff_mpeg4_c_dc_scale_table[32];
825 extern const uint8_t ff_aic_dc_scale_table[32];
826 extern const int16_t ff_mpeg4_default_intra_matrix[64];
827 extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
828 extern const uint8_t ff_h263_chroma_qscale_table[32];
829 extern const uint8_t ff_h263_loop_filter_strength[32];
832 void ff_h261_loop_filter(MpegEncContext *s);
833 void ff_h261_reorder_mb_index(MpegEncContext* s);
834 void ff_h261_encode_mb(MpegEncContext *s,
835 DCTELEM block[6][64],
836 int motion_x, int motion_y);
837 void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
838 void ff_h261_encode_init(MpegEncContext *s);
841 /* h263.c, h263dec.c */
842 int ff_h263_decode_init(AVCodecContext *avctx);
843 int ff_h263_decode_frame(AVCodecContext *avctx,
844 void *data, int *data_size,
845 uint8_t *buf, int buf_size);
846 int ff_h263_decode_end(AVCodecContext *avctx);
847 void h263_encode_mb(MpegEncContext *s,
848 DCTELEM block[6][64],
849 int motion_x, int motion_y);
850 void mpeg4_encode_mb(MpegEncContext *s,
851 DCTELEM block[6][64],
852 int motion_x, int motion_y);
853 void h263_encode_picture_header(MpegEncContext *s, int picture_number);
854 void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
855 void h263_encode_gob_header(MpegEncContext * s, int mb_line);
856 int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
858 void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
860 void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
861 void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
862 #ifdef CONFIG_ENCODERS
863 void h263_encode_init(MpegEncContext *s);
865 static void h263_encode_init(MpegEncContext *s) {assert(0);}
867 void h263_decode_init_vlc(MpegEncContext *s);
868 int h263_decode_picture_header(MpegEncContext *s);
869 int ff_h263_decode_gob_header(MpegEncContext *s);
870 int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
871 void ff_h263_update_motion_val(MpegEncContext * s);
872 void ff_h263_loop_filter(MpegEncContext * s);
873 void ff_set_qscale(MpegEncContext * s, int qscale);
874 int ff_h263_decode_mba(MpegEncContext *s);
875 void ff_h263_encode_mba(MpegEncContext *s);
877 int intel_h263_decode_picture_header(MpegEncContext *s);
878 int flv_h263_decode_picture_header(MpegEncContext *s);
879 int ff_h263_decode_mb(MpegEncContext *s,
880 DCTELEM block[6][64]);
881 int ff_mpeg4_decode_mb(MpegEncContext *s,
882 DCTELEM block[6][64]);
883 int h263_get_picture_format(int width, int height);
884 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
885 void ff_mpeg4_clean_buffers(MpegEncContext *s);
886 void ff_mpeg4_stuffing(PutBitContext * pbc);
887 void ff_mpeg4_init_partitions(MpegEncContext *s);
888 void ff_mpeg4_merge_partitions(MpegEncContext *s);
889 void ff_clean_mpeg4_qscales(MpegEncContext *s);
890 void ff_clean_h263_qscales(MpegEncContext *s);
891 int ff_mpeg4_decode_partitions(MpegEncContext *s);
892 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
893 int ff_h263_resync(MpegEncContext *s);
894 int ff_h263_get_gob_height(MpegEncContext *s);
895 void ff_mpeg4_init_direct_mv(MpegEncContext *s);
896 int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
897 int ff_h263_round_chroma(int x);
898 void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
899 int ff_mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
903 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
904 int rv_decode_dc(MpegEncContext *s, int n);
905 void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
909 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
910 void msmpeg4_encode_ext_header(MpegEncContext * s);
911 void msmpeg4_encode_mb(MpegEncContext * s,
912 DCTELEM block[6][64],
913 int motion_x, int motion_y);
914 int msmpeg4_decode_picture_header(MpegEncContext * s);
915 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
916 int ff_msmpeg4_decode_init(MpegEncContext *s);
917 void ff_msmpeg4_encode_init(MpegEncContext *s);
918 int ff_wmv2_decode_picture_header(MpegEncContext * s);
919 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
920 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
921 void ff_mspel_motion(MpegEncContext *s,
922 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
923 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
924 int motion_x, int motion_y, int h);
925 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
926 void ff_wmv2_encode_mb(MpegEncContext * s,
927 DCTELEM block[6][64],
928 int motion_x, int motion_y);
931 int mjpeg_init(MpegEncContext *s);
932 void mjpeg_close(MpegEncContext *s);
933 void mjpeg_encode_mb(MpegEncContext *s,
934 DCTELEM block[6][64]);
935 void mjpeg_picture_header(MpegEncContext *s);
936 void mjpeg_picture_trailer(MpegEncContext *s);
937 void ff_mjpeg_stuffing(PutBitContext * pbc);
940 int ff_cavs_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
942 #endif /* AVCODEC_MPEGVIDEO_H */