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"
36 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
48 #define MPEG_BUF_SIZE (16 * 1024)
50 #define QMAT_SHIFT_MMX 16
58 #define MAX_PICTURE_COUNT 32
60 #define ME_MAP_SIZE 64
61 #define ME_MAP_SHIFT 3
62 #define ME_MAP_MV_BITS 11
64 /* run length table */
68 #define I_TYPE FF_I_TYPE ///< Intra
69 #define P_TYPE FF_P_TYPE ///< Predicted
70 #define B_TYPE FF_B_TYPE ///< Bi-dir predicted
71 #define S_TYPE FF_S_TYPE ///< S(GMC)-VOP MPEG4
72 #define SI_TYPE FF_SI_TYPE ///< Switching Intra
73 #define SP_TYPE FF_SP_TYPE ///< Switching Predicted
75 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
77 #define INPLACE_OFFSET 16
82 typedef struct ScanTable{
83 const uint8_t *scantable;
84 uint8_t permutated[64];
85 uint8_t raster_end[64];
87 /** Used by dct_quantise_alitvec to find last-non-zero */
88 DECLARE_ALIGNED_8(uint8_t, inverse[64]);
95 typedef struct Picture{
99 * halfpel luma planes.
101 uint8_t *interpolated[3];
102 int16_t (*motion_val_base[2])[2];
103 uint32_t *mb_type_base;
104 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if theres just one type
105 #define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
106 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
107 #define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
108 #define IS_INTRA(a) ((a)&7)
109 #define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
110 #define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
111 #define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
112 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
113 #define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
114 #define IS_GMC(a) ((a)&MB_TYPE_GMC)
115 #define IS_16X16(a) ((a)&MB_TYPE_16x16)
116 #define IS_16X8(a) ((a)&MB_TYPE_16x8)
117 #define IS_8X16(a) ((a)&MB_TYPE_8x16)
118 #define IS_8X8(a) ((a)&MB_TYPE_8x8)
119 #define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
120 #define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
121 #define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
122 #define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
123 #define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
124 #define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
125 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
126 #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
127 #define HAS_CBP(a) ((a)&MB_TYPE_CBP)
129 int field_poc[2]; ///< h264 top/bottom POC
130 int poc; ///< h264 frame POC
131 int frame_num; ///< h264 frame_num
132 int pic_id; ///< h264 pic_num or long_term_pic_idx
133 int long_ref; ///< 1->long term reference 0->short term reference
134 int ref_poc[2][16]; ///< h264 POCs of the frames used as reference
135 int ref_count[2]; ///< number of entries in ref_poc
137 int mb_var_sum; ///< sum of MB variance for current frame
138 int mc_mb_var_sum; ///< motion compensated MB variance for current frame
139 uint16_t *mb_var; ///< Table for MB variances
140 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
141 uint8_t *mb_mean; ///< Table for MB luminance
142 int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decision FIXME remove
143 int b_frame_score; /* */
146 struct MpegEncContext;
149 * Motion estimation context.
151 typedef struct MotionEstContext{
152 AVCodecContext *avctx;
153 int skip; ///< set if ME is skipped for the current MB
154 int co_located_mv[4][2]; ///< mv from last p frame for direct mode ME
155 int direct_basis_mv[4][2];
156 uint8_t *scratchpad; ///< data area for the me algo, so that the ME doesnt need to malloc/free
161 uint32_t *map; ///< map to avoid duplicate evaluations
162 uint32_t *score_map; ///< map to store the scores
164 int pre_penalty_factor;
166 int sub_penalty_factor;
167 int mb_penalty_factor;
171 int pre_pass; ///< = 1 for the pre pass
183 /* temp variables for picture complexity calculation */
184 int mc_mb_var_sum_temp;
186 int scene_change_score;
187 /* cmp, chroma_cmp;*/
188 op_pixels_func (*hpel_put)[4];
189 op_pixels_func (*hpel_avg)[4];
190 qpel_mc_func (*qpel_put)[16];
191 qpel_mc_func (*qpel_avg)[16];
192 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
193 uint8_t *current_mv_penalty;
194 int (*sub_motion_search)(struct MpegEncContext * s,
195 int *mx_ptr, int *my_ptr, int dmin,
196 int src_index, int ref_index,
203 typedef struct MpegEncContext {
204 struct AVCodecContext *avctx;
205 /* the following parameters must be initialized before encoding */
206 int width, height;///< picture size. must be a multiple of 16
208 int intra_only; ///< if true, only intra pictures are generated
209 int bit_rate; ///< wanted bit rate
210 enum OutputFormat out_format; ///< output format
211 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
213 /* the following codec id fields are deprecated in favor of codec_id */
214 int h263_plus; ///< h263 plus headers
215 int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
216 int h263_flv; ///< use flv h263 header
218 enum CodecID codec_id; /* see CODEC_ID_xxx */
219 int fixed_qscale; ///< fixed qscale if non zero
220 int encoding; ///< true if we are encoding (vs decoding)
221 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
222 int flags2; ///< AVCodecContext.flags2
223 int max_b_frames; ///< max number of b-frames for encoding
224 int luma_elim_threshold;
225 int chroma_elim_threshold;
226 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
227 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
228 int codec_tag; ///< internal codec_tag upper case converted from avctx codec_tag
229 int stream_codec_tag; ///< internal stream_codec_tag upper case converted from avctx stream_codec_tag
230 /* the following fields are managed internally by the encoder */
235 /* sequence parameters */
236 int context_initialized;
237 int input_picture_number; ///< used to set pic->display_picture_number, shouldnt be used for/by anything else
238 int coded_picture_number; ///< used to set pic->coded_picture_number, shouldnt be used for/by anything else
239 int picture_number; //FIXME remove, unclear definition
240 int picture_in_gop_number; ///< 0-> first pic in gop, ...
241 int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
242 int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
243 int mb_width, mb_height; ///< number of MBs horizontally & vertically
244 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
245 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
246 int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
247 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
248 int mb_num; ///< number of MBs of a picture
249 int linesize; ///< line size, in bytes, may be different from width
250 int uvlinesize; ///< line size, for chroma in bytes, may be different from width
251 Picture *picture; ///< main picture buffer
252 Picture **input_picture; ///< next pictures on display order for encoding
253 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
255 int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
256 int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
257 struct MpegEncContext *thread_context[MAX_THREADS];
260 * copy of the previous picture structure.
261 * note, linesize & data, might not match the previous picture (for field pictures)
263 Picture last_picture;
266 * copy of the next picture structure.
267 * note, linesize & data, might not match the next picture (for field pictures)
269 Picture next_picture;
272 * copy of the source picture structure for encoding.
273 * note, linesize & data, might not match the source picture (for field pictures)
278 * copy of the current picture structure.
279 * note, linesize & data, might not match the current picture (for field pictures)
281 Picture current_picture; ///< buffer to store the decompressed current picture
283 Picture *last_picture_ptr; ///< pointer to the previous picture.
284 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
285 Picture *current_picture_ptr; ///< pointer to the current picture
286 uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
287 int last_dc[3]; ///< last DC values for MPEG1
288 int16_t *dc_val_base;
289 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
290 int16_t dc_cache[4*5];
291 int y_dc_scale, c_dc_scale;
292 const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
293 const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
294 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
295 uint8_t *coded_block_base;
296 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
297 int16_t (*ac_val_base)[16];
298 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
300 uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
301 #define PREV_PICT_TYPES_BUFFER_SIZE 256
302 int mb_skipped; ///< MUST BE SET only during DECODING
303 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
304 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
305 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
306 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
307 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
308 uint8_t *allocated_edge_emu_buffer;
309 uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
310 uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
311 uint8_t *obmc_scratchpad;
312 uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
315 int chroma_qscale; ///< chroma QP
316 unsigned int lambda; ///< lagrange multipler used in rate distortion
317 unsigned int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
319 int adaptive_quant; ///< use adaptive quantization
320 int dquant; ///< qscale difference to prev qscale
321 int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
322 int last_pict_type; //FIXME removes
323 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
325 int frame_rate_index;
326 int last_lambda_for[5]; ///< last lambda for a specific pict type
328 /* motion compensation */
329 int unrestricted_mv; ///< mv can point outside of the coded picture
330 int h263_long_vectors; ///< use horrible h263v1 long vector mode
331 int decode; ///< if 0 then decoding will be skipped (for encoding b frames for example)
333 DSPContext dsp; ///< pointers for accelerated dsp functions
334 int f_code; ///< forward MV resolution
335 int b_code; ///< backward MV resolution for B Frames (mpeg4)
336 int16_t (*p_mv_table_base)[2];
337 int16_t (*b_forw_mv_table_base)[2];
338 int16_t (*b_back_mv_table_base)[2];
339 int16_t (*b_bidir_forw_mv_table_base)[2];
340 int16_t (*b_bidir_back_mv_table_base)[2];
341 int16_t (*b_direct_mv_table_base)[2];
342 int16_t (*p_field_mv_table_base[2][2])[2];
343 int16_t (*b_field_mv_table_base[2][2][2])[2];
344 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
345 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
346 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
347 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
348 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
349 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
350 int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
351 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
352 uint8_t (*p_field_select_table[2]);
353 uint8_t (*b_field_select_table[2][2]);
354 int me_method; ///< ME algorithm
356 #define MV_DIR_BACKWARD 1
357 #define MV_DIR_FORWARD 2
358 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
360 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
361 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
362 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
363 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
364 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
365 /**motion vectors for a macroblock
366 first coordinate : 0 = forward 1 = backward
367 second " : depend on type
368 third " : 0 = x, 1 = y
371 int field_select[2][2];
372 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
373 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
374 int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
378 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
379 for b-frames rounding mode is allways 0 */
381 int hurry_up; /**< when set to 1 during decoding, b frames will be skipped
382 when set to 2 idct/dequant will be skipped too */
384 /* macroblock layer */
388 uint16_t *mb_type; ///< Table for candidate MB types for encoding
389 #define CANDIDATE_MB_TYPE_INTRA 0x01
390 #define CANDIDATE_MB_TYPE_INTER 0x02
391 #define CANDIDATE_MB_TYPE_INTER4V 0x04
392 #define CANDIDATE_MB_TYPE_SKIPPED 0x08
393 //#define MB_TYPE_GMC 0x10
395 #define CANDIDATE_MB_TYPE_DIRECT 0x10
396 #define CANDIDATE_MB_TYPE_FORWARD 0x20
397 #define CANDIDATE_MB_TYPE_BACKWARD 0x40
398 #define CANDIDATE_MB_TYPE_BIDIR 0x80
400 #define CANDIDATE_MB_TYPE_INTER_I 0x100
401 #define CANDIDATE_MB_TYPE_FORWARD_I 0x200
402 #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
403 #define CANDIDATE_MB_TYPE_BIDIR_I 0x800
405 #define CANDIDATE_MB_TYPE_DIRECT0 0x1000
407 int block_index[6]; ///< index to current MB in block based arrays with edges
411 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
413 /** matrix transmitted in the bitstream */
414 uint16_t intra_matrix[64];
415 uint16_t chroma_intra_matrix[64];
416 uint16_t inter_matrix[64];
417 uint16_t chroma_inter_matrix[64];
418 #define QUANT_BIAS_SHIFT 8
419 int intra_quant_bias; ///< bias for the quantizer
420 int inter_quant_bias; ///< bias for the quantizer
421 int min_qcoeff; ///< minimum encodable coefficient
422 int max_qcoeff; ///< maximum encodable coefficient
423 int ac_esc_length; ///< num of bits needed to encode the longest esc
424 uint8_t *intra_ac_vlc_length;
425 uint8_t *intra_ac_vlc_last_length;
426 uint8_t *inter_ac_vlc_length;
427 uint8_t *inter_ac_vlc_last_length;
428 uint8_t *luma_dc_vlc_length;
429 uint8_t *chroma_dc_vlc_length;
430 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
434 /** precomputed matrix (combine qscale and DCT renorm) */
435 int (*q_intra_matrix)[64];
436 int (*q_inter_matrix)[64];
437 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
438 uint16_t (*q_intra_matrix16)[2][64];
439 uint16_t (*q_inter_matrix16)[2][64];
440 int block_last_index[12]; ///< last non zero coefficient in block
442 DECLARE_ALIGNED_8(ScanTable, intra_scantable);
443 ScanTable intra_h_scantable;
444 ScanTable intra_v_scantable;
445 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
447 /* noise reduction */
448 int (*dct_error_sum)[64];
450 uint16_t (*dct_offset)[64];
452 void *opaque; ///< private data for the user
454 /* bit rate control */
457 int frame_bits; ///< bits used for the current frame
458 int next_lambda; ///< next lambda used for retrying to encode a frame
459 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
461 /* statistics, used for 2-pass encoding */
470 int misc_bits; ///< cbp, mb_type
471 int last_bits; ///< temp var used for calculating the above vars
473 /* error concealment / resync */
475 uint8_t *error_status_table; ///< table of the error status of each MB
476 #define VP_START 1 ///< current MB is the first after a resync marker
485 int resync_mb_x; ///< x position of last resync marker
486 int resync_mb_y; ///< y position of last resync marker
487 GetBitContext last_resync_gb; ///< used to search for the next resync marker
488 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
489 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
490 int error_resilience;
492 ParseContext parse_context;
496 int obmc; ///< overlapped block motion compensation
498 /* H.263+ specific */
499 int umvplus; ///< == H263+ && unrestricted_mv
500 int h263_aic; ///< Advanded INTRA Coding (AIC)
501 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
502 int h263_slice_structured;
503 int alt_inter_vlc; ///< alternative inter vlc
509 int time_increment_bits; ///< number of bits to represent the fractional part of time
511 int time_base; ///< time in seconds of last I,P,S Frame
512 int64_t time; ///< time of current frame
513 int64_t last_non_b_time;
514 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
515 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
516 uint16_t pp_field_time;
517 uint16_t pb_field_time; ///< like above, just for interlaced
519 int vol_sprite_usage;
524 int sprite_brightness_change;
525 int num_sprite_warping_points;
526 int real_sprite_warping_points;
527 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
528 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
529 int sprite_shift[2]; ///< sprite shift [isChroma]
532 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
535 int enhancement_type;
538 int aspect_ratio_info; //FIXME remove
539 int sprite_warping_accuracy;
540 int low_latency_sprite;
541 int data_partitioning; ///< data partitioning flag from header
542 int partitioned_frame; ///< is current frame partitioned
543 int rvlc; ///< reversible vlc
544 int resync_marker; ///< could this stream contain resync markers
545 int low_delay; ///< no reordering needed / has no b-frames
547 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
548 int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
549 int use_intra_dc_vlc;
550 PutBitContext tex_pb; ///< used for data partitioned VOPs
551 PutBitContext pb2; ///< used for data partitioned VOPs
553 int t_frame; ///< time distance of first I -> B, used for interlaced b frames
554 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
556 /* divx specific, used to workaround (many) bugs in divx5 */
560 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
561 int bitstream_buffer_size;
562 unsigned int allocated_bitstream_buffer_size;
566 /* lavc specific stuff, used to workaround bugs in libavcodec */
570 int rv10_version; ///< RV10 version: 0 or 3
571 int rv10_first_dc_coded[3];
574 struct MJpegContext *mjpeg_ctx;
575 int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
576 int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
577 int mjpeg_write_tables; ///< do we want to have quantisation- and huffmantables in the jpeg file ?
578 int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers
580 /* MSMPEG4 specific */
583 int rl_chroma_table_index;
585 int use_skip_mb_code;
586 int slice_height; ///< in macroblocks
587 int first_slice_line; ///< used in mpeg4 too to handle resync markers
588 int flipflop_rounding;
589 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
591 int esc3_level_length;
593 /** [mb_intra][isChroma][level][run][last] */
594 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
595 int inter_intra_pred;
598 /* decompression specific */
602 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
603 int last_mv_dir; ///< last mv_dir, used for b frame encoding
604 int broken_link; ///< no_output_of_prior_pics_flag
605 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
607 /* MPEG2 specific - I wish I had not to support this mess. */
608 int progressive_sequence;
609 int mpeg_f_code[2][2];
610 int picture_structure;
612 #define PICT_TOP_FIELD 1
613 #define PICT_BOTTOM_FIELD 2
616 int intra_dc_precision;
617 int frame_pred_frame_dct;
619 int concealment_motion_vectors;
621 int intra_vlc_format;
623 int repeat_first_field;
629 int chroma_x_shift;//depend on pix_format, that depend on chroma_format
632 int progressive_frame;
636 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
641 uint8_t *ptr_lastgob;
642 int swap_uv;//vcr2 codec is mpeg2 varint with UV swaped
645 DCTELEM (*block)[64]; ///< points to one of the following blocks
646 DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
647 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
649 #define SLICE_ERROR -1
650 #define SLICE_END -2 ///<end marker found
651 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
653 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
654 DCTELEM *block/*align 16*/, int n, int qscale);
655 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
656 DCTELEM *block/*align 16*/, int n, int qscale);
657 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
658 DCTELEM *block/*align 16*/, int n, int qscale);
659 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
660 DCTELEM *block/*align 16*/, int n, int qscale);
661 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
662 DCTELEM *block/*align 16*/, int n, int qscale);
663 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
664 DCTELEM *block/*align 16*/, int n, int qscale);
665 void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
666 DCTELEM *block/*align 16*/, int n, int qscale);
667 void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
668 DCTELEM *block/*align 16*/, int n, int qscale);
669 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
670 DCTELEM *block/*align 16*/, int n, int qscale);
671 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
672 DCTELEM *block/*align 16*/, int n, int qscale);
673 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
674 int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
675 void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
679 int DCT_common_init(MpegEncContext *s);
680 void MPV_decode_defaults(MpegEncContext *s);
681 int MPV_common_init(MpegEncContext *s);
682 void MPV_common_end(MpegEncContext *s);
683 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
684 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
685 void MPV_frame_end(MpegEncContext *s);
686 int MPV_encode_init(AVCodecContext *avctx);
687 int MPV_encode_end(AVCodecContext *avctx);
688 int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
690 void MPV_common_init_mmx(MpegEncContext *s);
693 void MPV_common_init_axp(MpegEncContext *s);
696 void MPV_common_init_mlib(MpegEncContext *s);
699 void MPV_common_init_mmi(MpegEncContext *s);
702 void MPV_common_init_armv4l(MpegEncContext *s);
705 void MPV_common_init_ppc(MpegEncContext *s);
707 extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
708 void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
709 void ff_clean_intra_table_entries(MpegEncContext *s);
710 void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
711 void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
712 void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
713 int src_x, int src_y, int w, int h);
714 void ff_mpeg_flush(AVCodecContext *avctx);
715 void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
716 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
717 int ff_find_unused_picture(MpegEncContext *s, int shared);
718 void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
719 void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
720 const uint8_t *ff_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
722 void ff_er_frame_start(MpegEncContext *s);
723 void ff_er_frame_end(MpegEncContext *s);
724 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
727 extern enum PixelFormat ff_yuv420p_list[2];
729 void ff_init_block_index(MpegEncContext *s);
731 static inline void ff_update_block_index(MpegEncContext *s){
732 const int block_size= 8>>s->avctx->lowres;
734 s->block_index[0]+=2;
735 s->block_index[1]+=2;
736 s->block_index[2]+=2;
737 s->block_index[3]+=2;
740 s->dest[0]+= 2*block_size;
741 s->dest[1]+= block_size;
742 s->dest[2]+= block_size;
745 static inline int get_bits_diff(MpegEncContext *s){
746 const int bits= put_bits_count(&s->pb);
747 const int last= s->last_bits;
755 void ff_estimate_p_frame_motion(MpegEncContext * s,
757 void ff_estimate_b_frame_motion(MpegEncContext * s,
759 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
760 void ff_fix_long_p_mvs(MpegEncContext * s);
761 void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
762 int16_t (*mv_table)[2], int f_code, int type, int truncate);
763 void ff_init_me(MpegEncContext *s);
764 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
765 inline int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
766 int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
767 int ref_mv_scale, int size, int h);
768 inline int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
769 int ref_index, int size, int h, int add_rate);
772 extern const uint16_t ff_mpeg1_default_intra_matrix[64];
773 extern const uint16_t ff_mpeg1_default_non_intra_matrix[64];
774 extern const uint8_t ff_mpeg1_dc_scale_table[128];
776 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
777 void mpeg1_encode_mb(MpegEncContext *s,
778 DCTELEM block[6][64],
779 int motion_x, int motion_y);
780 void ff_mpeg1_encode_init(MpegEncContext *s);
781 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
782 void ff_mpeg1_clean_buffers(MpegEncContext *s);
786 typedef struct RLTable {
787 int n; ///< number of entries of table_vlc minus 1
788 int last; ///< number of values for last = 0
789 const uint16_t (*table_vlc)[2];
790 const int8_t *table_run;
791 const int8_t *table_level;
792 uint8_t *index_run[2]; ///< encoding only
793 int8_t *max_level[2]; ///< encoding & decoding
794 int8_t *max_run[2]; ///< encoding & decoding
795 VLC vlc; ///< decoding only deprected FIXME remove
796 RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
799 void init_rl(RLTable *rl, int use_static);
800 void init_vlc_rl(RLTable *rl, int use_static);
802 static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
805 index = rl->index_run[last][run];
808 if (level > rl->max_level[last][run])
810 return index + level - 1;
813 extern const uint8_t ff_mpeg4_y_dc_scale_table[32];
814 extern const uint8_t ff_mpeg4_c_dc_scale_table[32];
815 extern const uint8_t ff_aic_dc_scale_table[32];
816 extern const int16_t ff_mpeg4_default_intra_matrix[64];
817 extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
818 extern const uint8_t ff_h263_chroma_qscale_table[32];
819 extern const uint8_t ff_h263_loop_filter_strength[32];
822 void ff_h261_loop_filter(MpegEncContext *s);
823 void ff_h261_reorder_mb_index(MpegEncContext* s);
824 void ff_h261_encode_mb(MpegEncContext *s,
825 DCTELEM block[6][64],
826 int motion_x, int motion_y);
827 void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
828 void ff_h261_encode_init(MpegEncContext *s);
829 int ff_h261_get_picture_format(int width, int height);
832 /* h263.c, h263dec.c */
833 int ff_h263_decode_init(AVCodecContext *avctx);
834 int ff_h263_decode_frame(AVCodecContext *avctx,
835 void *data, int *data_size,
836 uint8_t *buf, int buf_size);
837 int ff_h263_decode_end(AVCodecContext *avctx);
838 void h263_encode_mb(MpegEncContext *s,
839 DCTELEM block[6][64],
840 int motion_x, int motion_y);
841 void mpeg4_encode_mb(MpegEncContext *s,
842 DCTELEM block[6][64],
843 int motion_x, int motion_y);
844 void h263_encode_picture_header(MpegEncContext *s, int picture_number);
845 void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
846 void h263_encode_gob_header(MpegEncContext * s, int mb_line);
847 int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
849 void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
851 void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
852 void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
853 #ifdef CONFIG_ENCODERS
854 void h263_encode_init(MpegEncContext *s);
856 static void h263_encode_init(MpegEncContext *s) {assert(0);}
858 void h263_decode_init_vlc(MpegEncContext *s);
859 int h263_decode_picture_header(MpegEncContext *s);
860 int ff_h263_decode_gob_header(MpegEncContext *s);
861 int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
862 void ff_h263_update_motion_val(MpegEncContext * s);
863 void ff_h263_loop_filter(MpegEncContext * s);
864 void ff_set_qscale(MpegEncContext * s, int qscale);
865 int ff_h263_decode_mba(MpegEncContext *s);
866 void ff_h263_encode_mba(MpegEncContext *s);
868 int intel_h263_decode_picture_header(MpegEncContext *s);
869 int flv_h263_decode_picture_header(MpegEncContext *s);
870 int ff_h263_decode_mb(MpegEncContext *s,
871 DCTELEM block[6][64]);
872 int ff_mpeg4_decode_mb(MpegEncContext *s,
873 DCTELEM block[6][64]);
874 int h263_get_picture_format(int width, int height);
875 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
876 void ff_mpeg4_clean_buffers(MpegEncContext *s);
877 void ff_mpeg4_stuffing(PutBitContext * pbc);
878 void ff_mpeg4_init_partitions(MpegEncContext *s);
879 void ff_mpeg4_merge_partitions(MpegEncContext *s);
880 void ff_clean_mpeg4_qscales(MpegEncContext *s);
881 void ff_clean_h263_qscales(MpegEncContext *s);
882 int ff_mpeg4_decode_partitions(MpegEncContext *s);
883 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
884 int ff_h263_resync(MpegEncContext *s);
885 int ff_h263_get_gob_height(MpegEncContext *s);
886 void ff_mpeg4_init_direct_mv(MpegEncContext *s);
887 int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
888 int ff_h263_round_chroma(int x);
889 void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
893 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
894 int rv_decode_dc(MpegEncContext *s, int n);
895 void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
899 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
900 void msmpeg4_encode_ext_header(MpegEncContext * s);
901 void msmpeg4_encode_mb(MpegEncContext * s,
902 DCTELEM block[6][64],
903 int motion_x, int motion_y);
904 int msmpeg4_decode_picture_header(MpegEncContext * s);
905 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
906 int ff_msmpeg4_decode_init(MpegEncContext *s);
907 void ff_msmpeg4_encode_init(MpegEncContext *s);
908 int ff_wmv2_decode_picture_header(MpegEncContext * s);
909 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
910 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
911 void ff_mspel_motion(MpegEncContext *s,
912 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
913 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
914 int motion_x, int motion_y, int h);
915 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
916 void ff_wmv2_encode_mb(MpegEncContext * s,
917 DCTELEM block[6][64],
918 int motion_x, int motion_y);
921 int mjpeg_init(MpegEncContext *s);
922 void mjpeg_close(MpegEncContext *s);
923 void mjpeg_encode_mb(MpegEncContext *s,
924 DCTELEM block[6][64]);
925 void mjpeg_picture_header(MpegEncContext *s);
926 void mjpeg_picture_trailer(MpegEncContext *s);
927 void ff_mjpeg_stuffing(PutBitContext * pbc);
929 #endif /* AVCODEC_MPEGVIDEO_H */