2 * Generic DCT based hybrid video encoder
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #ifndef AVCODEC_MPEGVIDEO_H
26 #define AVCODEC_MPEGVIDEO_H
30 #define FRAME_SKIPED 100 ///< return value for header parsers if frame is not coded
41 #define MPEG_BUF_SIZE (16 * 1024)
43 #define QMAT_SHIFT_MMX 16
49 #define MAX_PICTURE_COUNT 15
51 #define ME_MAP_SIZE 64
52 #define ME_MAP_SHIFT 3
53 #define ME_MAP_MV_BITS 11
55 /* run length table */
59 #define I_TYPE FF_I_TYPE ///< Intra
60 #define P_TYPE FF_P_TYPE ///< Predicted
61 #define B_TYPE FF_B_TYPE ///< Bi-dir predicted
62 #define S_TYPE FF_S_TYPE ///< S(GMC)-VOP MPEG4
63 #define SI_TYPE FF_SI_TYPE ///< Switching Intra
64 #define SP_TYPE FF_SP_TYPE ///< Switching Predicted
66 typedef struct Predictor{
72 typedef struct RateControlEntry{
79 uint64_t expected_bits;
90 * rate control context.
92 typedef struct RateControlContext{
94 int num_entries; ///< number of RateControlEntries
95 RateControlEntry *entry;
96 int buffer_index; ///< amount of bits in the video/audio buffer
98 double short_term_qsum; ///< sum of recent qscales
99 double short_term_qcount; ///< count of recent qscales
100 double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization
101 double pass1_wanted_bits; ///< bits which should have been outputed by the pass1 code (including complexity init)
103 double last_qscale_for[5]; ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff
104 int last_mc_mb_var_sum;
106 uint64_t i_cplx_sum[5];
107 uint64_t p_cplx_sum[5];
108 uint64_t mv_bits_sum[5];
109 uint64_t qscale_sum[5];
111 int last_non_b_pict_type;
117 typedef struct ScanTable{
118 const uint8_t *scantable;
119 uint8_t permutated[64];
120 uint8_t raster_end[64];
122 /** Used by dct_quantise_alitvec to find last-non-zero */
123 uint8_t __align8 inverse[64];
130 typedef struct Picture{
134 * halfpel luma planes.
136 uint8_t *interpolated[3];
138 int16_t (*motion_val[2])[2];
139 int8_t *ref_index[2];
140 uint16_t *mb_type_base;
141 uint16_t *mb_type; ///< mb_type_base + mb_width + 2
142 #define MB_TYPE_INTRA4x4 0x0001
143 #define MB_TYPE_INTRA16x16 0x0002
144 #define MB_TYPE_INTRA_PCM 0x0004
145 #define MB_TYPE_16x16 0x0008
146 #define MB_TYPE_16x8 0x0010
147 #define MB_TYPE_8x16 0x0020
148 #define MB_TYPE_8x8 0x0040
149 #define MB_TYPE_INTERLACED 0x0080
150 #define MB_TYPE_DIRECT2 0x0100 //FIXME
151 #define MB_TYPE_REF0 0x0200
152 #define MB_TYPE_GMC2 0x0400 //FIXME
153 #define MB_TYPE_P0L0 0x1000
154 #define MB_TYPE_P1L0 0x2000
155 #define MB_TYPE_P0L1 0x4000
156 #define MB_TYPE_P1L1 0x8000
158 #define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
159 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
160 #define IS_INTRA(a) ((a)&3)
161 #define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
162 #define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
163 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
164 #define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
165 #define IS_16X16(a) ((a)&MB_TYPE_16x16)
166 #define IS_16X8(a) ((a)&MB_TYPE_16x8)
167 #define IS_8X16(a) ((a)&MB_TYPE_8x16)
168 #define IS_8X8(a) ((a)&MB_TYPE_8x8)
169 #define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
170 #define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
171 #define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
172 #define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
173 #define IS_REF0(a) ((a)&MB_TYPE_REF0)
174 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
175 #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
178 int field_poc[2]; ///< h264 top/bottom POC
179 int poc; ///< h264 frame POC
180 int frame_num; ///< h264 frame_num
181 int pic_id; ///< h264 pic_num or long_term_pic_idx
182 int long_ref; ///< 1->long term reference 0->short term reference
184 int mb_var_sum; ///< sum of MB variance for current frame
185 int mc_mb_var_sum; ///< motion compensated MB variance for current frame
186 uint16_t *mb_var; ///< Table for MB variances
187 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
188 uint8_t *mb_mean; ///< Table for MB luminance
189 int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decission
190 int b_frame_score; /* */
193 typedef struct ParseContext{
199 int frame_start_found;
202 struct MpegEncContext;
205 * Motion estimation context.
207 typedef struct MotionEstContext{
208 int skip; ///< set if ME is skiped for the current MB
209 int co_located_mv[4][2]; ///< mv from last p frame for direct mode ME
210 int direct_basis_mv[4][2];
211 uint8_t *scratchpad; ///< data area for the me algo, so that the ME doesnt need to malloc/free
212 uint32_t *map; ///< map to avoid duplicate evaluations
213 uint32_t *score_map; ///< map to store the scores
215 int pre_penalty_factor;
217 int sub_penalty_factor;
218 int mb_penalty_factor;
219 int pre_pass; ///< = 1 for the pre pass
221 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
222 int (*sub_motion_search)(struct MpegEncContext * s,
223 int *mx_ptr, int *my_ptr, int dmin,
224 int xmin, int ymin, int xmax, int ymax,
225 int pred_x, int pred_y, Picture *ref_picture,
226 int n, int size, uint8_t * const mv_penalty);
227 int (*motion_search[7])(struct MpegEncContext * s, int block,
228 int *mx_ptr, int *my_ptr,
229 int P[10][2], int pred_x, int pred_y,
230 int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2],
231 int ref_mv_scale, uint8_t * const mv_penalty);
232 int (*pre_motion_search)(struct MpegEncContext * s, int block,
233 int *mx_ptr, int *my_ptr,
234 int P[10][2], int pred_x, int pred_y,
235 int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2],
236 int ref_mv_scale, uint8_t * const mv_penalty);
237 int (*get_mb_score)(struct MpegEncContext * s, int mx, int my, int pred_x, int pred_y, Picture *ref_picture,
238 uint8_t * const mv_penalty);
244 typedef struct MpegEncContext {
245 struct AVCodecContext *avctx;
246 /* the following parameters must be initialized before encoding */
247 int width, height;///< picture size. must be a multiple of 16
249 int intra_only; ///< if true, only intra pictures are generated
250 int bit_rate; ///< wanted bit rate
251 int bit_rate_tolerance; ///< amount of +- bits (>0)
252 enum OutputFormat out_format; ///< output format
253 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
255 /* the following codec id fields are deprecated in favor of codec_id */
256 int h263_plus; ///< h263 plus headers
257 int h263_rv10; ///< use RV10 variation for H263
258 int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
259 int h263_intel; ///< use I263 intel h263 header
261 int codec_id; /* see CODEC_ID_xxx */
262 int fixed_qscale; ///< fixed qscale if non zero
263 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
264 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
265 int max_qdiff; ///< max qscale difference between frames
266 int encoding; ///< true if we are encoding (vs decoding)
267 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
268 int max_b_frames; ///< max number of b-frames for encoding
269 int b_frame_strategy;
270 int luma_elim_threshold;
271 int chroma_elim_threshold;
272 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
273 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
274 /* the following fields are managed internally by the encoder */
279 /* sequence parameters */
280 int context_initialized;
281 int input_picture_number;
283 int picture_in_gop_number; ///< 0-> first pic in gop, ...
284 int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
285 int mb_width, mb_height; ///< number of MBs horizontally & vertically
286 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replicateion)
287 int mb_num; ///< number of MBs of a picture
288 int linesize; ///< line size, in bytes, may be different from width
289 int uvlinesize; ///< line size, for chroma in bytes, may be different from width
290 Picture picture[MAX_PICTURE_COUNT]; ///< main picture buffer
291 Picture *input_picture[MAX_PICTURE_COUNT]; ///< next pictures on display order for encoding
292 Picture *reordered_input_picture[MAX_PICTURE_COUNT]; ///< pointer to the next pictures in codedorder for encoding
295 * copy of the previous picture structure.
296 * note, linesize & data, might not match the previous picture (for field pictures)
298 Picture last_picture;
301 * copy of the next picture structure.
302 * note, linesize & data, might not match the next picture (for field pictures)
304 Picture next_picture;
307 * copy of the source picture structure for encoding.
308 * note, linesize & data, might not match the source picture (for field pictures)
313 * copy of the current picture structure.
314 * note, linesize & data, might not match the current picture (for field pictures)
316 Picture current_picture; ///< buffer to store the decompressed current picture
318 Picture *last_picture_ptr; ///< pointer to the previous picture.
319 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
320 Picture *new_picture_ptr; ///< pointer to the source picture for encoding
321 Picture *current_picture_ptr; ///< pointer to the current picture
322 int last_dc[3]; ///< last DC values for MPEG1
323 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
324 int16_t dc_cache[4*5];
325 int y_dc_scale, c_dc_scale;
326 uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
327 uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
328 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
329 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
331 uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
332 #define PREV_PICT_TYPES_BUFFER_SIZE 256
333 int mb_skiped; ///< MUST BE SET only during DECODING
334 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
335 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
336 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
337 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
338 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
339 uint8_t *allocated_edge_emu_buffer;
340 uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
343 float frame_qscale; ///< qscale from the frame level rc FIXME remove
344 int adaptive_quant; ///< use adaptive quantization
345 int dquant; ///< qscale difference to prev qscale
346 int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
348 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
349 int frame_rate_index;
350 /* motion compensation */
351 int unrestricted_mv; ///< mv can point outside of the coded picture
352 int h263_long_vectors; ///< use horrible h263v1 long vector mode
353 int decode; ///< if 0 then decoding will be skiped (for encoding b frames for example)
355 DSPContext dsp; ///< pointers for accelerated dsp fucntions
356 int f_code; ///< forward MV resolution
357 int b_code; ///< backward MV resolution for B Frames (mpeg4)
358 int16_t (*motion_val)[2]; ///< used for MV prediction (4MV per MB)
359 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
360 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
361 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
362 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
363 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
364 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
365 int me_method; ///< ME algorithm
366 int scene_change_score;
368 #define MV_DIR_BACKWARD 1
369 #define MV_DIR_FORWARD 2
370 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
372 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
373 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
374 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
375 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
376 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
377 /**motion vectors for a macroblock
378 first coordinate : 0 = forward 1 = backward
379 second " : depend on type
380 third " : 0 = x, 1 = y
383 int field_select[2][2];
384 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
385 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
389 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
390 for b-frames rounding mode is allways 0 */
392 int hurry_up; /**< when set to 1 during decoding, b frames will be skiped
393 when set to 2 idct/dequant will be skipped too */
395 /* macroblock layer */
399 uint8_t *mb_type; ///< Table for MB type
400 #define MB_TYPE_INTRA 0x01
401 #define MB_TYPE_INTER 0x02
402 #define MB_TYPE_INTER4V 0x04
403 #define MB_TYPE_SKIPED 0x08
404 #define MB_TYPE_GMC 0x10
406 #define MB_TYPE_DIRECT 0x10
407 #define MB_TYPE_FORWARD 0x20
408 #define MB_TYPE_BACKWARD 0x40
409 #define MB_TYPE_BIDIR 0x80
411 int block_index[6]; ///< index to current MB in block based arrays with edges
414 /** matrix transmitted in the bitstream */
415 uint16_t intra_matrix[64];
416 uint16_t chroma_intra_matrix[64];
417 uint16_t inter_matrix[64];
418 uint16_t chroma_inter_matrix[64];
419 #define QUANT_BIAS_SHIFT 8
420 int intra_quant_bias; ///< bias for the quantizer
421 int inter_quant_bias; ///< bias for the quantizer
422 int min_qcoeff; ///< minimum encodable coefficient
423 int max_qcoeff; ///< maximum encodable coefficient
424 int ac_esc_length; ///< num of bits needed to encode the longest esc
425 uint8_t *intra_ac_vlc_length;
426 uint8_t *intra_ac_vlc_last_length;
427 uint8_t *inter_ac_vlc_length;
428 uint8_t *inter_ac_vlc_last_length;
429 uint8_t *luma_dc_vlc_length;
430 uint8_t *chroma_dc_vlc_length;
431 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
433 /** precomputed matrix (combine qscale and DCT renorm) */
434 int __align8 q_intra_matrix[32][64];
435 int __align8 q_inter_matrix[32][64];
436 /** identical to the above but for MMX & these are not permutated */
437 uint16_t __align8 q_intra_matrix16[32][64];
438 uint16_t __align8 q_inter_matrix16[32][64];
439 uint16_t __align8 q_intra_matrix16_bias[32][64];
440 uint16_t __align8 q_inter_matrix16_bias[32][64];
441 int block_last_index[6]; ///< last non zero coefficient in block
443 ScanTable __align8 intra_scantable;
444 ScanTable intra_h_scantable;
445 ScanTable intra_v_scantable;
446 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
448 void *opaque; ///< private data for the user
450 /* bit rate control */
451 int I_frame_bits; //FIXME used in mpeg12 ...
454 int frame_bits; ///< bits used for the current frame
455 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
457 /* statistics, used for 2-pass encoding */
466 int misc_bits; ///< cbp, mb_type
467 int last_bits; ///< temp var used for calculating the above vars
469 /* error concealment / resync */
470 uint8_t *error_status_table; ///< table of the error status of each MB
471 #define VP_START 1 ///< current MB is the first after a resync marker
480 int resync_mb_x; ///< x position of last resync marker
481 int resync_mb_y; ///< y position of last resync marker
482 GetBitContext last_resync_gb; ///< used to search for the next resync marker
483 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
484 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
485 int error_resilience;
487 ParseContext parse_context;
493 /* H.263+ specific */
494 int umvplus; ///< == H263+ && unrestricted_mv
495 int h263_aic; ///< Advanded INTRA Coding (AIC)
496 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
499 int time_increment_resolution;
500 int time_increment_bits; ///< number of bits to represent the fractional part of time
502 int time_base; ///< time in seconds of last I,P,S Frame
503 int64_t time; ///< time of current frame
504 int64_t last_non_b_time;
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
507 uint16_t pp_field_time;
508 uint16_t pb_field_time; ///< like above, just for interlaced
510 int vol_sprite_usage;
515 int sprite_brightness_change;
516 int num_sprite_warping_points;
517 int real_sprite_warping_points;
518 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
519 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
520 int sprite_shift[2]; ///< sprite shift [isChroma]
523 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
526 int enhancement_type;
529 int aspect_ratio_info; //FIXME remove
530 int aspected_width; //FIXME remove
531 int aspected_height; //FIXME remove
532 int sprite_warping_accuracy;
533 int low_latency_sprite;
534 int data_partitioning; ///< data partitioning flag from header
535 int partitioned_frame; ///< is current frame partitioned
536 int rvlc; ///< reversible vlc
537 int resync_marker; ///< could this stream contain resync markers
538 int low_delay; ///< no reordering needed / has no b-frames
540 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
541 PutBitContext tex_pb; ///< used for data partitioned VOPs
542 PutBitContext pb2; ///< used for data partitioned VOPs
543 #define PB_BUFFER_SIZE 1024*256
544 uint8_t *tex_pb_buffer;
547 #define CO_LOCATED_TYPE_4MV 1
548 #define CO_LOCATED_TYPE_FIELDMV 2
549 int8_t *co_located_type_table; ///< 4mv & field_mv info for next b frame
550 int16_t (*field_mv_table)[2][2]; ///< used for interlaced b frame decoding
551 int8_t (*field_select_table)[2]; ///< wtf, no really another table for interlaced b frames
552 int t_frame; ///< time distance of first I -> B, used for interlaced b frames
553 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
555 /* divx specific, used to workaround (many) bugs in divx5 */
559 #define BITSTREAM_BUFFER_SIZE 1024*256
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;
565 /* 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 fake_picture_number; ///< picture number at the bitstream frame rate
603 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
604 int last_mv_dir; ///< last mv_dir, used for b frame encoding
605 int broken_link; ///< no_output_of_prior_pics_flag
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;
625 int progressive_frame;
633 /* These are explained on avcodec.h */
635 int rtp_payload_size;
636 void (*rtp_callback)(void *data, int size, int packet_number);
637 uint8_t *ptr_lastgob;
639 DCTELEM (*block)[64]; ///< points to one of the following blocks
640 DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
641 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
643 #define SLICE_ERROR -1
644 #define SLICE_END -2 //end marker found
645 #define SLICE_NOEND -3 //no end marker or error found but mb count exceeded
647 void (*dct_unquantize_mpeg1)(struct MpegEncContext *s,
648 DCTELEM *block/*align 16*/, int n, int qscale);
649 void (*dct_unquantize_mpeg2)(struct MpegEncContext *s,
650 DCTELEM *block/*align 16*/, int n, int qscale);
651 void (*dct_unquantize_h263)(struct MpegEncContext *s,
652 DCTELEM *block/*align 16*/, int n, int qscale);
653 void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
654 DCTELEM *block/*align 16*/, int n, int qscale);
655 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
656 int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
660 int DCT_common_init(MpegEncContext *s);
661 int MPV_common_init(MpegEncContext *s);
662 void MPV_common_end(MpegEncContext *s);
663 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
664 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
665 void MPV_frame_end(MpegEncContext *s);
666 int MPV_encode_init(AVCodecContext *avctx);
667 int MPV_encode_end(AVCodecContext *avctx);
668 int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
670 void MPV_common_init_mmx(MpegEncContext *s);
673 void MPV_common_init_axp(MpegEncContext *s);
676 void MPV_common_init_mlib(MpegEncContext *s);
679 void MPV_common_init_mmi(MpegEncContext *s);
682 void MPV_common_init_armv4l(MpegEncContext *s);
685 void MPV_common_init_ppc(MpegEncContext *s);
687 extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
688 void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
689 void ff_clean_intra_table_entries(MpegEncContext *s);
690 void ff_init_scantable(MpegEncContext *s, ScanTable *st, const uint8_t *src_scantable);
691 void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
692 void ff_emulated_edge_mc(MpegEncContext *s, uint8_t *src, int linesize, int block_w, int block_h,
693 int src_x, int src_y, int w, int h);
694 char ff_get_pict_type_char(int pict_type);
695 int ff_combine_frame( MpegEncContext *s, int next, uint8_t **buf, int *buf_size);
697 void ff_er_frame_start(MpegEncContext *s);
698 void ff_er_frame_end(MpegEncContext *s);
699 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
702 extern enum PixelFormat ff_yuv420p_list[2];
704 static inline void ff_init_block_index(MpegEncContext *s){
705 s->block_index[0]= s->block_wrap[0]*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
706 s->block_index[1]= s->block_wrap[0]*(s->mb_y*2 + 1) + s->mb_x*2;
707 s->block_index[2]= s->block_wrap[0]*(s->mb_y*2 + 2) - 1 + s->mb_x*2;
708 s->block_index[3]= s->block_wrap[0]*(s->mb_y*2 + 2) + s->mb_x*2;
709 s->block_index[4]= s->block_wrap[4]*(s->mb_y + 1) + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
710 s->block_index[5]= s->block_wrap[4]*(s->mb_y + 1 + s->mb_height + 2) + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
713 static inline void ff_update_block_index(MpegEncContext *s){
714 s->block_index[0]+=2;
715 s->block_index[1]+=2;
716 s->block_index[2]+=2;
717 s->block_index[3]+=2;
722 static inline int get_bits_diff(MpegEncContext *s){
723 const int bits= get_bit_count(&s->pb);
724 const int last= s->last_bits;
732 void ff_estimate_p_frame_motion(MpegEncContext * s,
734 void ff_estimate_b_frame_motion(MpegEncContext * s,
736 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
737 void ff_fix_long_p_mvs(MpegEncContext * s);
738 void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
739 void ff_init_me(MpegEncContext *s);
740 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
744 extern const int16_t ff_mpeg1_default_intra_matrix[64];
745 extern const int16_t ff_mpeg1_default_non_intra_matrix[64];
746 extern uint8_t ff_mpeg1_dc_scale_table[128];
748 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
749 void mpeg1_encode_mb(MpegEncContext *s,
750 DCTELEM block[6][64],
751 int motion_x, int motion_y);
752 void ff_mpeg1_encode_init(MpegEncContext *s);
753 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
754 void ff_mpeg1_clean_buffers(MpegEncContext *s);
758 typedef struct RLTable {
759 int n; ///< number of entries of table_vlc minus 1
760 int last; ///< number of values for last = 0
761 const uint16_t (*table_vlc)[2];
762 const int8_t *table_run;
763 const int8_t *table_level;
764 uint8_t *index_run[2]; ///< encoding only
765 int8_t *max_level[2]; ///< encoding & decoding
766 int8_t *max_run[2]; ///< encoding & decoding
767 VLC vlc; ///< decoding only deprected FIXME remove
768 RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
771 void init_rl(RLTable *rl);
772 void init_vlc_rl(RLTable *rl);
774 static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
777 index = rl->index_run[last][run];
780 if (level > rl->max_level[last][run])
782 return index + level - 1;
785 extern uint8_t ff_mpeg4_y_dc_scale_table[32];
786 extern uint8_t ff_mpeg4_c_dc_scale_table[32];
787 extern const int16_t ff_mpeg4_default_intra_matrix[64];
788 extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
789 int ff_h263_decode_init(AVCodecContext *avctx);
790 int ff_h263_decode_frame(AVCodecContext *avctx,
791 void *data, int *data_size,
792 uint8_t *buf, int buf_size);
793 int ff_h263_decode_end(AVCodecContext *avctx);
794 void h263_encode_mb(MpegEncContext *s,
795 DCTELEM block[6][64],
796 int motion_x, int motion_y);
797 void mpeg4_encode_mb(MpegEncContext *s,
798 DCTELEM block[6][64],
799 int motion_x, int motion_y);
800 void h263_encode_picture_header(MpegEncContext *s, int picture_number);
801 int h263_encode_gob_header(MpegEncContext * s, int mb_line);
802 int16_t *h263_pred_motion(MpegEncContext * s, int block,
804 void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
806 void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
807 void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
808 void h263_encode_init(MpegEncContext *s);
809 void h263_decode_init_vlc(MpegEncContext *s);
810 int h263_decode_picture_header(MpegEncContext *s);
811 int ff_h263_decode_gob_header(MpegEncContext *s);
812 int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
815 int intel_h263_decode_picture_header(MpegEncContext *s);
816 int ff_h263_decode_mb(MpegEncContext *s,
817 DCTELEM block[6][64]);
818 int h263_get_picture_format(int width, int height);
819 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
820 void ff_mpeg4_clean_buffers(MpegEncContext *s);
821 void ff_mpeg4_stuffing(PutBitContext * pbc);
822 void ff_mpeg4_init_partitions(MpegEncContext *s);
823 void ff_mpeg4_merge_partitions(MpegEncContext *s);
824 void ff_clean_mpeg4_qscales(MpegEncContext *s);
825 void ff_clean_h263_qscales(MpegEncContext *s);
826 int ff_mpeg4_decode_partitions(MpegEncContext *s);
827 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
828 int ff_h263_resync(MpegEncContext *s);
829 int ff_h263_get_gob_height(MpegEncContext *s);
830 void ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
831 inline int ff_h263_round_chroma(int x);
835 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
836 int rv_decode_dc(MpegEncContext *s, int n);
840 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
841 void msmpeg4_encode_ext_header(MpegEncContext * s);
842 void msmpeg4_encode_mb(MpegEncContext * s,
843 DCTELEM block[6][64],
844 int motion_x, int motion_y);
845 int msmpeg4_decode_picture_header(MpegEncContext * s);
846 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
847 int ff_msmpeg4_decode_init(MpegEncContext *s);
848 void ff_msmpeg4_encode_init(MpegEncContext *s);
849 int ff_wmv2_decode_picture_header(MpegEncContext * s);
850 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
851 void ff_mspel_motion(MpegEncContext *s,
852 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
853 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
854 int motion_x, int motion_y, int h);
855 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
856 void ff_wmv2_encode_mb(MpegEncContext * s,
857 DCTELEM block[6][64],
858 int motion_x, int motion_y);
861 int mjpeg_init(MpegEncContext *s);
862 void mjpeg_close(MpegEncContext *s);
863 void mjpeg_encode_mb(MpegEncContext *s,
864 DCTELEM block[6][64]);
865 void mjpeg_picture_header(MpegEncContext *s);
866 void mjpeg_picture_trailer(MpegEncContext *s);
870 int ff_rate_control_init(MpegEncContext *s);
871 float ff_rate_estimate_qscale(MpegEncContext *s);
872 void ff_write_pass1_stats(MpegEncContext *s);
873 void ff_rate_control_uninit(MpegEncContext *s);
874 double ff_eval(char *s, double *const_value, const char **const_name,
875 double (**func1)(void *, double), const char **func1_name,
876 double (**func2)(void *, double, double), char **func2_name,
880 #endif /* AVCODEC_MPEGVIDEO_H */