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 double 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];
137 int16_t (*motion_val_base[2])[2];
138 int8_t *ref_index[2];
139 uint32_t *mb_type_base;
140 #define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
141 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
142 #define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
143 #define IS_INTRA(a) ((a)&7)
144 #define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
145 #define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
146 #define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
147 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
148 #define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
149 #define IS_GMC(a) ((a)&MB_TYPE_GMC)
150 #define IS_16X16(a) ((a)&MB_TYPE_16x16)
151 #define IS_16X8(a) ((a)&MB_TYPE_16x8)
152 #define IS_8X16(a) ((a)&MB_TYPE_8x16)
153 #define IS_8X8(a) ((a)&MB_TYPE_8x8)
154 #define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
155 #define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
156 #define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
157 #define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
158 #define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
159 #define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
160 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
161 #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
162 #define HAS_CBP(a) ((a)&MB_TYPE_CBP)
164 int field_poc[2]; ///< h264 top/bottom POC
165 int poc; ///< h264 frame POC
166 int frame_num; ///< h264 frame_num
167 int pic_id; ///< h264 pic_num or long_term_pic_idx
168 int long_ref; ///< 1->long term reference 0->short term reference
170 int mb_var_sum; ///< sum of MB variance for current frame
171 int mc_mb_var_sum; ///< motion compensated MB variance for current frame
172 uint16_t *mb_var; ///< Table for MB variances
173 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
174 uint8_t *mb_mean; ///< Table for MB luminance
175 int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decission FIXME remove
176 int b_frame_score; /* */
179 typedef struct ParseContext{
184 uint32_t state; ///< contains the last few bytes in MSB order
185 int frame_start_found;
186 int overread; ///< the number of bytes which where irreversibly read from the next frame
187 int overread_index; ///< the index into ParseContext.buffer of the overreaded bytes
190 struct MpegEncContext;
193 * Motion estimation context.
195 typedef struct MotionEstContext{
196 int skip; ///< set if ME is skiped for the current MB
197 int co_located_mv[4][2]; ///< mv from last p frame for direct mode ME
198 int direct_basis_mv[4][2];
199 uint8_t *scratchpad; ///< data area for the me algo, so that the ME doesnt need to malloc/free
200 uint32_t *map; ///< map to avoid duplicate evaluations
201 uint32_t *score_map; ///< map to store the scores
203 int pre_penalty_factor;
205 int sub_penalty_factor;
206 int mb_penalty_factor;
207 int pre_pass; ///< = 1 for the pre pass
209 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
210 int (*sub_motion_search)(struct MpegEncContext * s,
211 int *mx_ptr, int *my_ptr, int dmin,
212 int xmin, int ymin, int xmax, int ymax,
213 int pred_x, int pred_y, Picture *ref_picture,
214 int n, int size, uint8_t * const mv_penalty);
215 int (*motion_search[7])(struct MpegEncContext * s, int block,
216 int *mx_ptr, int *my_ptr,
217 int P[10][2], int pred_x, int pred_y,
218 int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2],
219 int ref_mv_scale, uint8_t * const mv_penalty);
220 int (*pre_motion_search)(struct MpegEncContext * s, int block,
221 int *mx_ptr, int *my_ptr,
222 int P[10][2], int pred_x, int pred_y,
223 int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2],
224 int ref_mv_scale, uint8_t * const mv_penalty);
225 int (*get_mb_score)(struct MpegEncContext * s, int mx, int my, int pred_x, int pred_y, Picture *ref_picture,
226 uint8_t * const mv_penalty);
232 typedef struct MpegEncContext {
233 struct AVCodecContext *avctx;
234 /* the following parameters must be initialized before encoding */
235 int width, height;///< picture size. must be a multiple of 16
237 int intra_only; ///< if true, only intra pictures are generated
238 int bit_rate; ///< wanted bit rate
239 enum OutputFormat out_format; ///< output format
240 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
242 /* the following codec id fields are deprecated in favor of codec_id */
243 int h263_plus; ///< h263 plus headers
244 int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
245 int h263_flv; ///< use flv h263 header
247 int codec_id; /* see CODEC_ID_xxx */
248 int fixed_qscale; ///< fixed qscale if non zero
249 int encoding; ///< true if we are encoding (vs decoding)
250 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
251 int max_b_frames; ///< max number of b-frames for encoding
252 int luma_elim_threshold;
253 int chroma_elim_threshold;
254 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
255 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
256 /* the following fields are managed internally by the encoder */
261 /* sequence parameters */
262 int context_initialized;
263 int input_picture_number; ///< used to set pic->display_picture_number, shouldnt be used for/by anything else
264 int coded_picture_number; ///< used to set pic->coded_picture_number, shouldnt be used for/by anything else
265 int picture_number; //FIXME remove, unclear definition
266 int picture_in_gop_number; ///< 0-> first pic in gop, ...
267 int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
268 int mb_width, mb_height; ///< number of MBs horizontally & vertically
269 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressng of left & top MBs withoutt sig11
270 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressng
271 int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressng
272 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replicateion)
273 int mb_num; ///< number of MBs of a picture
274 int linesize; ///< line size, in bytes, may be different from width
275 int uvlinesize; ///< line size, for chroma in bytes, may be different from width
276 Picture *picture; ///< main picture buffer
277 Picture **input_picture; ///< next pictures on display order for encoding
278 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
281 * copy of the previous picture structure.
282 * note, linesize & data, might not match the previous picture (for field pictures)
284 Picture last_picture;
287 * copy of the next picture structure.
288 * note, linesize & data, might not match the next picture (for field pictures)
290 Picture next_picture;
293 * copy of the source picture structure for encoding.
294 * note, linesize & data, might not match the source picture (for field pictures)
299 * copy of the current picture structure.
300 * note, linesize & data, might not match the current picture (for field pictures)
302 Picture current_picture; ///< buffer to store the decompressed current picture
304 Picture *last_picture_ptr; ///< pointer to the previous picture.
305 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
306 Picture *current_picture_ptr; ///< pointer to the current picture
307 uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
308 int last_dc[3]; ///< last DC values for MPEG1
309 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
310 int16_t dc_cache[4*5];
311 int y_dc_scale, c_dc_scale;
312 uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
313 uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
314 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
315 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
316 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
318 uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
319 #define PREV_PICT_TYPES_BUFFER_SIZE 256
320 int mb_skiped; ///< MUST BE SET only during DECODING
321 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
322 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
323 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
324 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
325 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
326 uint8_t *allocated_edge_emu_buffer;
327 uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
330 int chroma_qscale; ///< chroma QP
331 int lambda; ///< lagrange multipler used in rate distortion
332 int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
334 int adaptive_quant; ///< use adaptive quantization
335 int dquant; ///< qscale difference to prev qscale
336 int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
338 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
339 int frame_rate_index;
340 /* motion compensation */
341 int unrestricted_mv; ///< mv can point outside of the coded picture
342 int h263_long_vectors; ///< use horrible h263v1 long vector mode
343 int decode; ///< if 0 then decoding will be skiped (for encoding b frames for example)
345 DSPContext dsp; ///< pointers for accelerated dsp fucntions
346 int f_code; ///< forward MV resolution
347 int b_code; ///< backward MV resolution for B Frames (mpeg4)
348 int16_t (*p_mv_table_base)[2];
349 int16_t (*b_forw_mv_table_base)[2];
350 int16_t (*b_back_mv_table_base)[2];
351 int16_t (*b_bidir_forw_mv_table_base)[2];
352 int16_t (*b_bidir_back_mv_table_base)[2];
353 int16_t (*b_direct_mv_table_base)[2];
354 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
355 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
356 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
357 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
358 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
359 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
360 int me_method; ///< ME algorithm
361 int scene_change_score;
363 #define MV_DIR_BACKWARD 1
364 #define MV_DIR_FORWARD 2
365 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
367 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
368 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
369 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
370 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
371 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
372 /**motion vectors for a macroblock
373 first coordinate : 0 = forward 1 = backward
374 second " : depend on type
375 third " : 0 = x, 1 = y
378 int field_select[2][2];
379 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
380 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
384 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
385 for b-frames rounding mode is allways 0 */
387 int hurry_up; /**< when set to 1 during decoding, b frames will be skiped
388 when set to 2 idct/dequant will be skipped too */
390 /* macroblock layer */
394 uint8_t *mb_type; ///< Table for MB type FIXME remove and use picture->mb_type
395 #define MB_TYPE_INTRA 0x01
396 #define MB_TYPE_INTER 0x02
397 #define MB_TYPE_INTER4V 0x04
398 #define MB_TYPE_SKIPED 0x08
399 //#define MB_TYPE_GMC 0x10
401 #define MB_TYPE_DIRECT 0x10
402 #define MB_TYPE_FORWARD 0x20
403 #define MB_TYPE_BACKWARD 0x40
404 #define MB_TYPE_BIDIR 0x80
406 int block_index[6]; ///< index to current MB in block based arrays with edges
410 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
412 /** matrix transmitted in the bitstream */
413 uint16_t intra_matrix[64];
414 uint16_t chroma_intra_matrix[64];
415 uint16_t inter_matrix[64];
416 uint16_t chroma_inter_matrix[64];
417 #define QUANT_BIAS_SHIFT 8
418 int intra_quant_bias; ///< bias for the quantizer
419 int inter_quant_bias; ///< bias for the quantizer
420 int min_qcoeff; ///< minimum encodable coefficient
421 int max_qcoeff; ///< maximum encodable coefficient
422 int ac_esc_length; ///< num of bits needed to encode the longest esc
423 uint8_t *intra_ac_vlc_length;
424 uint8_t *intra_ac_vlc_last_length;
425 uint8_t *inter_ac_vlc_length;
426 uint8_t *inter_ac_vlc_last_length;
427 uint8_t *luma_dc_vlc_length;
428 uint8_t *chroma_dc_vlc_length;
429 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
433 /** precomputed matrix (combine qscale and DCT renorm) */
434 int (*q_intra_matrix)[64];
435 int (*q_inter_matrix)[64];
436 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
437 uint16_t (*q_intra_matrix16)[2][64];
438 uint16_t (*q_inter_matrix16)[2][64];
439 int block_last_index[6]; ///< last non zero coefficient in block
441 ScanTable __align8 intra_scantable;
442 ScanTable intra_h_scantable;
443 ScanTable intra_v_scantable;
444 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
446 /* noise reduction */
447 int (*dct_error_sum)[64];
449 uint16_t (*dct_offset)[64];
451 void *opaque; ///< private data for the user
453 /* bit rate control */
454 int I_frame_bits; //FIXME used in mpeg12 ...
457 int frame_bits; ///< bits used for the current frame
458 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
460 /* statistics, used for 2-pass encoding */
469 int misc_bits; ///< cbp, mb_type
470 int last_bits; ///< temp var used for calculating the above vars
472 /* error concealment / resync */
474 uint8_t *error_status_table; ///< table of the error status of each MB
475 #define VP_START 1 ///< current MB is the first after a resync marker
484 int resync_mb_x; ///< x position of last resync marker
485 int resync_mb_y; ///< y position of last resync marker
486 GetBitContext last_resync_gb; ///< used to search for the next resync marker
487 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
488 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
489 int error_resilience;
491 ParseContext parse_context;
495 int obmc; ///< overlapped block motion compensation
497 /* H.263+ specific */
498 int umvplus; ///< == H263+ && unrestricted_mv
499 int h263_aic; ///< Advanded INTRA Coding (AIC)
500 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
501 int h263_slice_structured;
502 int alt_inter_vlc; ///< alternative inter vlc
507 int time_increment_resolution;
508 int time_increment_bits; ///< number of bits to represent the fractional part of time
510 int time_base; ///< time in seconds of last I,P,S Frame
511 int64_t time; ///< time of current frame
512 int64_t last_non_b_time;
513 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
514 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
515 uint16_t pp_field_time;
516 uint16_t pb_field_time; ///< like above, just for interlaced
518 int vol_sprite_usage;
523 int sprite_brightness_change;
524 int num_sprite_warping_points;
525 int real_sprite_warping_points;
526 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
527 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
528 int sprite_shift[2]; ///< sprite shift [isChroma]
531 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
534 int enhancement_type;
537 int aspect_ratio_info; //FIXME remove
538 int sprite_warping_accuracy;
539 int low_latency_sprite;
540 int data_partitioning; ///< data partitioning flag from header
541 int partitioned_frame; ///< is current frame partitioned
542 int rvlc; ///< reversible vlc
543 int resync_marker; ///< could this stream contain resync markers
544 int low_delay; ///< no reordering needed / has no b-frames
546 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
547 int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
548 PutBitContext tex_pb; ///< used for data partitioned VOPs
549 PutBitContext pb2; ///< used for data partitioned VOPs
550 #define PB_BUFFER_SIZE 1024*256
551 uint8_t *tex_pb_buffer;
554 int16_t (*field_mv_table)[2][2]; ///< used for interlaced b frame decoding
555 int8_t (*field_select_table)[2]; ///< wtf, no really another table for interlaced b frames
556 int t_frame; ///< time distance of first I -> B, used for interlaced b frames
557 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
559 /* divx specific, used to workaround (many) bugs in divx5 */
563 #define BITSTREAM_BUFFER_SIZE 1024*256
564 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
565 int bitstream_buffer_size;
569 /* lavc specific stuff, used to workaround bugs in libavcodec */
574 int rv10_version; ///< RV10 version: 0 or 3
575 int rv10_first_dc_coded[3];
578 struct MJpegContext *mjpeg_ctx;
579 int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
580 int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
581 int mjpeg_write_tables; ///< do we want to have quantisation- and huffmantables in the jpeg file ?
582 int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers
584 /* MSMPEG4 specific */
587 int rl_chroma_table_index;
589 int use_skip_mb_code;
590 int slice_height; ///< in macroblocks
591 int first_slice_line; ///< used in mpeg4 too to handle resync markers
592 int flipflop_rounding;
593 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
595 int esc3_level_length;
597 /** [mb_intra][isChroma][level][run][last] */
598 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
599 int inter_intra_pred;
602 /* decompression specific */
606 int fake_picture_number; ///< picture number at the bitstream frame rate
607 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
608 int last_mv_dir; ///< last mv_dir, used for b frame encoding
609 int broken_link; ///< no_output_of_prior_pics_flag
610 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
612 /* MPEG2 specific - I wish I had not to support this mess. */
613 int progressive_sequence;
614 int mpeg_f_code[2][2];
615 int picture_structure;
617 #define PICT_TOP_FIELD 1
618 #define PICT_BOTTOM_FIELD 2
621 int intra_dc_precision;
622 int frame_pred_frame_dct;
624 int concealment_motion_vectors;
626 int intra_vlc_format;
628 int repeat_first_field;
630 int progressive_frame;
634 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
639 uint8_t *ptr_lastgob;
640 int swap_uv;//vcr2 codec is mpeg2 varint with UV swaped
643 DCTELEM (*block)[64]; ///< points to one of the following blocks
644 DCTELEM (*blocks)[6][64]; // for HQ mode we need to keep the best block
645 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
647 #define SLICE_ERROR -1
648 #define SLICE_END -2 ///<end marker found
649 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
651 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
652 DCTELEM *block/*align 16*/, int n, int qscale);
653 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
654 DCTELEM *block/*align 16*/, int n, int qscale);
655 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
656 DCTELEM *block/*align 16*/, int n, int qscale);
657 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
658 DCTELEM *block/*align 16*/, int n, int qscale);
659 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
660 DCTELEM *block/*align 16*/, int n, int qscale);
661 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
662 DCTELEM *block/*align 16*/, int n, int qscale);
663 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
664 DCTELEM *block/*align 16*/, int n, int qscale);
665 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
666 DCTELEM *block/*align 16*/, int n, int qscale);
667 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
668 int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
672 int DCT_common_init(MpegEncContext *s);
673 int MPV_common_init(MpegEncContext *s);
674 void MPV_common_end(MpegEncContext *s);
675 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
676 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
677 void MPV_frame_end(MpegEncContext *s);
678 int MPV_encode_init(AVCodecContext *avctx);
679 int MPV_encode_end(AVCodecContext *avctx);
680 int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
682 void MPV_common_init_mmx(MpegEncContext *s);
685 void MPV_common_init_axp(MpegEncContext *s);
688 void MPV_common_init_mlib(MpegEncContext *s);
691 void MPV_common_init_mmi(MpegEncContext *s);
694 void MPV_common_init_armv4l(MpegEncContext *s);
697 void MPV_common_init_ppc(MpegEncContext *s);
699 extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
700 void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
701 void ff_clean_intra_table_entries(MpegEncContext *s);
702 void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
703 void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
704 void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
705 int src_x, int src_y, int w, int h);
706 #define END_NOT_FOUND -100
707 int ff_combine_frame( MpegEncContext *s, int next, uint8_t **buf, int *buf_size);
708 void ff_mpeg_flush(AVCodecContext *avctx);
709 void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
710 void ff_write_quant_matrix(PutBitContext *pb, int16_t *matrix);
711 int ff_find_unused_picture(MpegEncContext *s, int shared);
712 void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
714 void ff_er_frame_start(MpegEncContext *s);
715 void ff_er_frame_end(MpegEncContext *s);
716 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
719 extern enum PixelFormat ff_yuv420p_list[2];
721 void ff_init_block_index(MpegEncContext *s);
723 static inline void ff_update_block_index(MpegEncContext *s){
724 s->block_index[0]+=2;
725 s->block_index[1]+=2;
726 s->block_index[2]+=2;
727 s->block_index[3]+=2;
735 static inline int get_bits_diff(MpegEncContext *s){
736 const int bits= get_bit_count(&s->pb);
737 const int last= s->last_bits;
745 void ff_estimate_p_frame_motion(MpegEncContext * s,
747 void ff_estimate_b_frame_motion(MpegEncContext * s,
749 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
750 void ff_fix_long_p_mvs(MpegEncContext * s);
751 void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
752 void ff_init_me(MpegEncContext *s);
753 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
757 extern const int16_t ff_mpeg1_default_intra_matrix[64];
758 extern const int16_t ff_mpeg1_default_non_intra_matrix[64];
759 extern uint8_t ff_mpeg1_dc_scale_table[128];
761 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
762 void mpeg1_encode_mb(MpegEncContext *s,
763 DCTELEM block[6][64],
764 int motion_x, int motion_y);
765 void ff_mpeg1_encode_init(MpegEncContext *s);
766 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
767 void ff_mpeg1_clean_buffers(MpegEncContext *s);
771 typedef struct RLTable {
772 int n; ///< number of entries of table_vlc minus 1
773 int last; ///< number of values for last = 0
774 const uint16_t (*table_vlc)[2];
775 const int8_t *table_run;
776 const int8_t *table_level;
777 uint8_t *index_run[2]; ///< encoding only
778 int8_t *max_level[2]; ///< encoding & decoding
779 int8_t *max_run[2]; ///< encoding & decoding
780 VLC vlc; ///< decoding only deprected FIXME remove
781 RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
784 void init_rl(RLTable *rl);
785 void init_vlc_rl(RLTable *rl);
787 static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
790 index = rl->index_run[last][run];
793 if (level > rl->max_level[last][run])
795 return index + level - 1;
798 extern uint8_t ff_mpeg4_y_dc_scale_table[32];
799 extern uint8_t ff_mpeg4_c_dc_scale_table[32];
800 extern uint8_t ff_aic_dc_scale_table[32];
801 extern const int16_t ff_mpeg4_default_intra_matrix[64];
802 extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
803 extern const uint8_t ff_h263_chroma_qscale_table[32];
804 extern const uint8_t ff_h263_loop_filter_strength[32];
807 int ff_h263_decode_init(AVCodecContext *avctx);
808 int ff_h263_decode_frame(AVCodecContext *avctx,
809 void *data, int *data_size,
810 uint8_t *buf, int buf_size);
811 int ff_h263_decode_end(AVCodecContext *avctx);
812 void h263_encode_mb(MpegEncContext *s,
813 DCTELEM block[6][64],
814 int motion_x, int motion_y);
815 void mpeg4_encode_mb(MpegEncContext *s,
816 DCTELEM block[6][64],
817 int motion_x, int motion_y);
818 void h263_encode_picture_header(MpegEncContext *s, int picture_number);
819 void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
820 void h263_encode_gob_header(MpegEncContext * s, int mb_line);
821 int16_t *h263_pred_motion(MpegEncContext * s, int block,
823 void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
825 void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
826 void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
827 void h263_encode_init(MpegEncContext *s);
828 void h263_decode_init_vlc(MpegEncContext *s);
829 int h263_decode_picture_header(MpegEncContext *s);
830 int ff_h263_decode_gob_header(MpegEncContext *s);
831 int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
832 void ff_h263_update_motion_val(MpegEncContext * s);
833 void ff_h263_loop_filter(MpegEncContext * s);
834 void ff_set_qscale(MpegEncContext * s, int qscale);
835 int ff_h263_decode_mba(MpegEncContext *s);
836 void ff_h263_encode_mba(MpegEncContext *s);
838 int intel_h263_decode_picture_header(MpegEncContext *s);
839 int flv_h263_decode_picture_header(MpegEncContext *s);
840 int ff_h263_decode_mb(MpegEncContext *s,
841 DCTELEM block[6][64]);
842 int ff_mpeg4_decode_mb(MpegEncContext *s,
843 DCTELEM block[6][64]);
844 int h263_get_picture_format(int width, int height);
845 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
846 void ff_mpeg4_clean_buffers(MpegEncContext *s);
847 void ff_mpeg4_stuffing(PutBitContext * pbc);
848 void ff_mpeg4_init_partitions(MpegEncContext *s);
849 void ff_mpeg4_merge_partitions(MpegEncContext *s);
850 void ff_clean_mpeg4_qscales(MpegEncContext *s);
851 void ff_clean_h263_qscales(MpegEncContext *s);
852 int ff_mpeg4_decode_partitions(MpegEncContext *s);
853 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
854 int ff_h263_resync(MpegEncContext *s);
855 int ff_h263_get_gob_height(MpegEncContext *s);
856 int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
857 inline int ff_h263_round_chroma(int x);
861 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
862 int rv_decode_dc(MpegEncContext *s, int n);
866 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
867 void msmpeg4_encode_ext_header(MpegEncContext * s);
868 void msmpeg4_encode_mb(MpegEncContext * s,
869 DCTELEM block[6][64],
870 int motion_x, int motion_y);
871 int msmpeg4_decode_picture_header(MpegEncContext * s);
872 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
873 int ff_msmpeg4_decode_init(MpegEncContext *s);
874 void ff_msmpeg4_encode_init(MpegEncContext *s);
875 int ff_wmv2_decode_picture_header(MpegEncContext * s);
876 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
877 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
878 void ff_mspel_motion(MpegEncContext *s,
879 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
880 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
881 int motion_x, int motion_y, int h);
882 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
883 void ff_wmv2_encode_mb(MpegEncContext * s,
884 DCTELEM block[6][64],
885 int motion_x, int motion_y);
888 int mjpeg_init(MpegEncContext *s);
889 void mjpeg_close(MpegEncContext *s);
890 void mjpeg_encode_mb(MpegEncContext *s,
891 DCTELEM block[6][64]);
892 void mjpeg_picture_header(MpegEncContext *s);
893 void mjpeg_picture_trailer(MpegEncContext *s);
897 int ff_rate_control_init(MpegEncContext *s);
898 float ff_rate_estimate_qscale(MpegEncContext *s);
899 void ff_write_pass1_stats(MpegEncContext *s);
900 void ff_rate_control_uninit(MpegEncContext *s);
901 double ff_eval(char *s, double *const_value, const char **const_name,
902 double (**func1)(void *, double), const char **func1_name,
903 double (**func2)(void *, double, double), char **func2_name,
905 int ff_vbv_update(MpegEncContext *s, int frame_size);
908 #endif /* AVCODEC_MPEGVIDEO_H */