2 * Generic DCT based hybrid video encoder
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
4 * Copyright (c) 2002-2004 Michael Niedermayer
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #ifndef AVCODEC_MPEGVIDEO_H
27 #define AVCODEC_MPEGVIDEO_H
30 #include "bitstream.h"
32 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
44 #define MPEG_BUF_SIZE (16 * 1024)
46 #define QMAT_SHIFT_MMX 16
54 #define MAX_PICTURE_COUNT 32
56 #define ME_MAP_SIZE 64
57 #define ME_MAP_SHIFT 3
58 #define ME_MAP_MV_BITS 11
60 /* run length table */
64 #define I_TYPE FF_I_TYPE ///< Intra
65 #define P_TYPE FF_P_TYPE ///< Predicted
66 #define B_TYPE FF_B_TYPE ///< Bi-dir predicted
67 #define S_TYPE FF_S_TYPE ///< S(GMC)-VOP MPEG4
68 #define SI_TYPE FF_SI_TYPE ///< Switching Intra
69 #define SP_TYPE FF_SP_TYPE ///< Switching Predicted
71 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
73 typedef struct Predictor{
79 typedef struct RateControlEntry{
87 uint64_t expected_bits;
99 * rate control context.
101 typedef struct RateControlContext{
103 int num_entries; ///< number of RateControlEntries
104 RateControlEntry *entry;
105 double buffer_index; ///< amount of bits in the video/audio buffer
107 double short_term_qsum; ///< sum of recent qscales
108 double short_term_qcount; ///< count of recent qscales
109 double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization
110 double pass1_wanted_bits; ///< bits which should have been outputed by the pass1 code (including complexity init)
112 double last_qscale_for[5]; ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff
113 int last_mc_mb_var_sum;
115 uint64_t i_cplx_sum[5];
116 uint64_t p_cplx_sum[5];
117 uint64_t mv_bits_sum[5];
118 uint64_t qscale_sum[5];
120 int last_non_b_pict_type;
122 void *non_lavc_opaque; ///< context for non lavc rc code (for example xvid)
123 float dry_run_qscale; ///< for xvid rc
129 typedef struct ScanTable{
130 const uint8_t *scantable;
131 uint8_t permutated[64];
132 uint8_t raster_end[64];
134 /** Used by dct_quantise_alitvec to find last-non-zero */
135 uint8_t __align8 inverse[64];
142 typedef struct Picture{
146 * halfpel luma planes.
148 uint8_t *interpolated[3];
149 int16_t (*motion_val_base[2])[2];
150 uint32_t *mb_type_base;
151 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if theres just one type
152 #define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
153 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
154 #define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
155 #define IS_INTRA(a) ((a)&7)
156 #define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
157 #define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
158 #define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
159 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
160 #define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
161 #define IS_GMC(a) ((a)&MB_TYPE_GMC)
162 #define IS_16X16(a) ((a)&MB_TYPE_16x16)
163 #define IS_16X8(a) ((a)&MB_TYPE_16x8)
164 #define IS_8X16(a) ((a)&MB_TYPE_8x16)
165 #define IS_8X8(a) ((a)&MB_TYPE_8x8)
166 #define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
167 #define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
168 #define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
169 #define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
170 #define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
171 #define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
172 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
173 #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
174 #define HAS_CBP(a) ((a)&MB_TYPE_CBP)
176 int field_poc[2]; ///< h264 top/bottom POC
177 int poc; ///< h264 frame POC
178 int frame_num; ///< h264 frame_num
179 int pic_id; ///< h264 pic_num or long_term_pic_idx
180 int long_ref; ///< 1->long term reference 0->short term reference
181 int ref_poc[2][16]; ///< h264 POCs of the frames used as reference
182 int ref_count[2]; ///< number of entries in ref_poc
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 decision FIXME remove
190 int b_frame_score; /* */
193 typedef struct ParseContext{
197 unsigned int buffer_size;
198 uint32_t state; ///< contains the last few bytes in MSB order
199 int frame_start_found;
200 int overread; ///< the number of bytes which where irreversibly read from the next frame
201 int overread_index; ///< the index into ParseContext.buffer of the overreaded bytes
204 struct MpegEncContext;
207 * Motion estimation context.
209 typedef struct MotionEstContext{
210 AVCodecContext *avctx;
211 int skip; ///< set if ME is skipped for the current MB
212 int co_located_mv[4][2]; ///< mv from last p frame for direct mode ME
213 int direct_basis_mv[4][2];
214 uint8_t *scratchpad; ///< data area for the me algo, so that the ME doesnt need to malloc/free
219 uint32_t *map; ///< map to avoid duplicate evaluations
220 uint32_t *score_map; ///< map to store the scores
222 int pre_penalty_factor;
224 int sub_penalty_factor;
225 int mb_penalty_factor;
229 int pre_pass; ///< = 1 for the pre pass
241 /* temp variables for picture complexity calculation */
242 int mc_mb_var_sum_temp;
244 int scene_change_score;
245 /* cmp, chroma_cmp;*/
246 op_pixels_func (*hpel_put)[4];
247 op_pixels_func (*hpel_avg)[4];
248 qpel_mc_func (*qpel_put)[16];
249 qpel_mc_func (*qpel_avg)[16];
250 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
251 uint8_t *current_mv_penalty;
252 int (*sub_motion_search)(struct MpegEncContext * s,
253 int *mx_ptr, int *my_ptr, int dmin,
254 int src_index, int ref_index,
261 typedef struct MpegEncContext {
262 struct AVCodecContext *avctx;
263 /* the following parameters must be initialized before encoding */
264 int width, height;///< picture size. must be a multiple of 16
266 int intra_only; ///< if true, only intra pictures are generated
267 int bit_rate; ///< wanted bit rate
268 enum OutputFormat out_format; ///< output format
269 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
271 /* the following codec id fields are deprecated in favor of codec_id */
272 int h263_plus; ///< h263 plus headers
273 int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
274 int h263_flv; ///< use flv h263 header
276 enum CodecID codec_id; /* see CODEC_ID_xxx */
277 int fixed_qscale; ///< fixed qscale if non zero
278 int encoding; ///< true if we are encoding (vs decoding)
279 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
280 int flags2; ///< AVCodecContext.flags2
281 int max_b_frames; ///< max number of b-frames for encoding
282 int luma_elim_threshold;
283 int chroma_elim_threshold;
284 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
285 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
286 /* the following fields are managed internally by the encoder */
291 /* sequence parameters */
292 int context_initialized;
293 int input_picture_number; ///< used to set pic->display_picture_number, shouldnt be used for/by anything else
294 int coded_picture_number; ///< used to set pic->coded_picture_number, shouldnt be used for/by anything else
295 int picture_number; //FIXME remove, unclear definition
296 int picture_in_gop_number; ///< 0-> first pic in gop, ...
297 int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
298 int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
299 int mb_width, mb_height; ///< number of MBs horizontally & vertically
300 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
301 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
302 int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
303 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
304 int mb_num; ///< number of MBs of a picture
305 int linesize; ///< line size, in bytes, may be different from width
306 int uvlinesize; ///< line size, for chroma in bytes, may be different from width
307 Picture *picture; ///< main picture buffer
308 Picture **input_picture; ///< next pictures on display order for encoding
309 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
311 int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
312 int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
313 struct MpegEncContext *thread_context[MAX_THREADS];
316 * copy of the previous picture structure.
317 * note, linesize & data, might not match the previous picture (for field pictures)
319 Picture last_picture;
322 * copy of the next picture structure.
323 * note, linesize & data, might not match the next picture (for field pictures)
325 Picture next_picture;
328 * copy of the source picture structure for encoding.
329 * note, linesize & data, might not match the source picture (for field pictures)
334 * copy of the current picture structure.
335 * note, linesize & data, might not match the current picture (for field pictures)
337 Picture current_picture; ///< buffer to store the decompressed current picture
339 Picture *last_picture_ptr; ///< pointer to the previous picture.
340 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
341 Picture *current_picture_ptr; ///< pointer to the current picture
342 uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
343 int last_dc[3]; ///< last DC values for MPEG1
344 int16_t *dc_val_base;
345 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
346 int16_t dc_cache[4*5];
347 int y_dc_scale, c_dc_scale;
348 const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
349 const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
350 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
351 uint8_t *coded_block_base;
352 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
353 int16_t (*ac_val_base)[16];
354 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
356 uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
357 #define PREV_PICT_TYPES_BUFFER_SIZE 256
358 int mb_skipped; ///< MUST BE SET only during DECODING
359 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
360 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
361 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
362 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
363 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
364 uint8_t *allocated_edge_emu_buffer;
365 uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
366 uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
367 uint8_t *obmc_scratchpad;
368 uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
371 int chroma_qscale; ///< chroma QP
372 int lambda; ///< lagrange multipler used in rate distortion
373 int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
375 int adaptive_quant; ///< use adaptive quantization
376 int dquant; ///< qscale difference to prev qscale
377 int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
378 int last_pict_type; //FIXME removes
379 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
381 int frame_rate_index;
382 int last_lambda_for[5]; ///< last lambda for a specific pict type
384 /* motion compensation */
385 int unrestricted_mv; ///< mv can point outside of the coded picture
386 int h263_long_vectors; ///< use horrible h263v1 long vector mode
387 int decode; ///< if 0 then decoding will be skipped (for encoding b frames for example)
389 DSPContext dsp; ///< pointers for accelerated dsp functions
390 int f_code; ///< forward MV resolution
391 int b_code; ///< backward MV resolution for B Frames (mpeg4)
392 int16_t (*p_mv_table_base)[2];
393 int16_t (*b_forw_mv_table_base)[2];
394 int16_t (*b_back_mv_table_base)[2];
395 int16_t (*b_bidir_forw_mv_table_base)[2];
396 int16_t (*b_bidir_back_mv_table_base)[2];
397 int16_t (*b_direct_mv_table_base)[2];
398 int16_t (*p_field_mv_table_base[2][2])[2];
399 int16_t (*b_field_mv_table_base[2][2][2])[2];
400 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
401 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
402 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
403 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
404 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
405 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
406 int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
407 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
408 uint8_t (*p_field_select_table[2]);
409 uint8_t (*b_field_select_table[2][2]);
410 int me_method; ///< ME algorithm
412 #define MV_DIR_BACKWARD 1
413 #define MV_DIR_FORWARD 2
414 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
416 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
417 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
418 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
419 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
420 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
421 /**motion vectors for a macroblock
422 first coordinate : 0 = forward 1 = backward
423 second " : depend on type
424 third " : 0 = x, 1 = y
427 int field_select[2][2];
428 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
429 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
433 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
434 for b-frames rounding mode is allways 0 */
436 int hurry_up; /**< when set to 1 during decoding, b frames will be skipped
437 when set to 2 idct/dequant will be skipped too */
439 /* macroblock layer */
443 uint16_t *mb_type; ///< Table for candidate MB types for encoding
444 #define CANDIDATE_MB_TYPE_INTRA 0x01
445 #define CANDIDATE_MB_TYPE_INTER 0x02
446 #define CANDIDATE_MB_TYPE_INTER4V 0x04
447 #define CANDIDATE_MB_TYPE_SKIPPED 0x08
448 //#define MB_TYPE_GMC 0x10
450 #define CANDIDATE_MB_TYPE_DIRECT 0x10
451 #define CANDIDATE_MB_TYPE_FORWARD 0x20
452 #define CANDIDATE_MB_TYPE_BACKWARD 0x40
453 #define CANDIDATE_MB_TYPE_BIDIR 0x80
455 #define CANDIDATE_MB_TYPE_INTER_I 0x100
456 #define CANDIDATE_MB_TYPE_FORWARD_I 0x200
457 #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
458 #define CANDIDATE_MB_TYPE_BIDIR_I 0x800
460 int block_index[6]; ///< index to current MB in block based arrays with edges
464 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
466 /** matrix transmitted in the bitstream */
467 uint16_t intra_matrix[64];
468 uint16_t chroma_intra_matrix[64];
469 uint16_t inter_matrix[64];
470 uint16_t chroma_inter_matrix[64];
471 #define QUANT_BIAS_SHIFT 8
472 int intra_quant_bias; ///< bias for the quantizer
473 int inter_quant_bias; ///< bias for the quantizer
474 int min_qcoeff; ///< minimum encodable coefficient
475 int max_qcoeff; ///< maximum encodable coefficient
476 int ac_esc_length; ///< num of bits needed to encode the longest esc
477 uint8_t *intra_ac_vlc_length;
478 uint8_t *intra_ac_vlc_last_length;
479 uint8_t *inter_ac_vlc_length;
480 uint8_t *inter_ac_vlc_last_length;
481 uint8_t *luma_dc_vlc_length;
482 uint8_t *chroma_dc_vlc_length;
483 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
487 /** precomputed matrix (combine qscale and DCT renorm) */
488 int (*q_intra_matrix)[64];
489 int (*q_inter_matrix)[64];
490 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
491 uint16_t (*q_intra_matrix16)[2][64];
492 uint16_t (*q_inter_matrix16)[2][64];
493 int block_last_index[12]; ///< last non zero coefficient in block
495 ScanTable __align8 intra_scantable;
496 ScanTable intra_h_scantable;
497 ScanTable intra_v_scantable;
498 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
500 /* noise reduction */
501 int (*dct_error_sum)[64];
503 uint16_t (*dct_offset)[64];
505 void *opaque; ///< private data for the user
507 /* bit rate control */
510 int frame_bits; ///< bits used for the current frame
511 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
513 /* statistics, used for 2-pass encoding */
522 int misc_bits; ///< cbp, mb_type
523 int last_bits; ///< temp var used for calculating the above vars
525 /* error concealment / resync */
527 uint8_t *error_status_table; ///< table of the error status of each MB
528 #define VP_START 1 ///< current MB is the first after a resync marker
537 int resync_mb_x; ///< x position of last resync marker
538 int resync_mb_y; ///< y position of last resync marker
539 GetBitContext last_resync_gb; ///< used to search for the next resync marker
540 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
541 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
542 int error_resilience;
544 ParseContext parse_context;
548 int obmc; ///< overlapped block motion compensation
550 /* H.263+ specific */
551 int umvplus; ///< == H263+ && unrestricted_mv
552 int h263_aic; ///< Advanded INTRA Coding (AIC)
553 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
554 int h263_slice_structured;
555 int alt_inter_vlc; ///< alternative inter vlc
561 int time_increment_bits; ///< number of bits to represent the fractional part of time
563 int time_base; ///< time in seconds of last I,P,S Frame
564 int64_t time; ///< time of current frame
565 int64_t last_non_b_time;
566 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
567 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
568 uint16_t pp_field_time;
569 uint16_t pb_field_time; ///< like above, just for interlaced
571 int vol_sprite_usage;
576 int sprite_brightness_change;
577 int num_sprite_warping_points;
578 int real_sprite_warping_points;
579 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
580 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
581 int sprite_shift[2]; ///< sprite shift [isChroma]
584 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
587 int enhancement_type;
590 int aspect_ratio_info; //FIXME remove
591 int sprite_warping_accuracy;
592 int low_latency_sprite;
593 int data_partitioning; ///< data partitioning flag from header
594 int partitioned_frame; ///< is current frame partitioned
595 int rvlc; ///< reversible vlc
596 int resync_marker; ///< could this stream contain resync markers
597 int low_delay; ///< no reordering needed / has no b-frames
599 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
600 int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
601 PutBitContext tex_pb; ///< used for data partitioned VOPs
602 PutBitContext pb2; ///< used for data partitioned VOPs
604 int t_frame; ///< time distance of first I -> B, used for interlaced b frames
605 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
607 /* divx specific, used to workaround (many) bugs in divx5 */
611 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
612 int bitstream_buffer_size;
613 unsigned int allocated_bitstream_buffer_size;
617 /* lavc specific stuff, used to workaround bugs in libavcodec */
621 int rv10_version; ///< RV10 version: 0 or 3
622 int rv10_first_dc_coded[3];
625 struct MJpegContext *mjpeg_ctx;
626 int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
627 int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
628 int mjpeg_write_tables; ///< do we want to have quantisation- and huffmantables in the jpeg file ?
629 int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers
631 /* MSMPEG4 specific */
634 int rl_chroma_table_index;
636 int use_skip_mb_code;
637 int slice_height; ///< in macroblocks
638 int first_slice_line; ///< used in mpeg4 too to handle resync markers
639 int flipflop_rounding;
640 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
642 int esc3_level_length;
644 /** [mb_intra][isChroma][level][run][last] */
645 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
646 int inter_intra_pred;
649 /* decompression specific */
653 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
654 int last_mv_dir; ///< last mv_dir, used for b frame encoding
655 int broken_link; ///< no_output_of_prior_pics_flag
656 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
658 /* MPEG2 specific - I wish I had not to support this mess. */
659 int progressive_sequence;
660 int mpeg_f_code[2][2];
661 int picture_structure;
663 #define PICT_TOP_FIELD 1
664 #define PICT_BOTTOM_FIELD 2
667 int intra_dc_precision;
668 int frame_pred_frame_dct;
670 int concealment_motion_vectors;
672 int intra_vlc_format;
674 int repeat_first_field;
680 int chroma_x_shift;//depend on pix_format, that depend on chroma_format
683 int progressive_frame;
687 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
692 uint8_t *ptr_lastgob;
693 int swap_uv;//vcr2 codec is mpeg2 varint with UV swaped
696 DCTELEM (*block)[64]; ///< points to one of the following blocks
697 DCTELEM (*blocks)[6][64]; // for HQ mode we need to keep the best block
698 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
700 #define SLICE_ERROR -1
701 #define SLICE_END -2 ///<end marker found
702 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
704 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
705 DCTELEM *block/*align 16*/, int n, int qscale);
706 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
707 DCTELEM *block/*align 16*/, int n, int qscale);
708 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
709 DCTELEM *block/*align 16*/, int n, int qscale);
710 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
711 DCTELEM *block/*align 16*/, int n, int qscale);
712 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
713 DCTELEM *block/*align 16*/, int n, int qscale);
714 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
715 DCTELEM *block/*align 16*/, int n, int qscale);
716 void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
717 DCTELEM *block/*align 16*/, int n, int qscale);
718 void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
719 DCTELEM *block/*align 16*/, int n, int qscale);
720 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
721 DCTELEM *block/*align 16*/, int n, int qscale);
722 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
723 DCTELEM *block/*align 16*/, int n, int qscale);
724 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
725 int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
726 void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
730 int DCT_common_init(MpegEncContext *s);
731 void MPV_decode_defaults(MpegEncContext *s);
732 int MPV_common_init(MpegEncContext *s);
733 void MPV_common_end(MpegEncContext *s);
734 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
735 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
736 void MPV_frame_end(MpegEncContext *s);
737 int MPV_encode_init(AVCodecContext *avctx);
738 int MPV_encode_end(AVCodecContext *avctx);
739 int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
741 void MPV_common_init_mmx(MpegEncContext *s);
744 void MPV_common_init_axp(MpegEncContext *s);
747 void MPV_common_init_mlib(MpegEncContext *s);
750 void MPV_common_init_mmi(MpegEncContext *s);
753 void MPV_common_init_armv4l(MpegEncContext *s);
756 void MPV_common_init_ppc(MpegEncContext *s);
758 extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
759 void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
760 void ff_clean_intra_table_entries(MpegEncContext *s);
761 void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
762 void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
763 void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
764 int src_x, int src_y, int w, int h);
765 #define END_NOT_FOUND -100
766 int ff_combine_frame(ParseContext *pc, int next, uint8_t **buf, int *buf_size);
767 void ff_parse_close(AVCodecParserContext *s);
768 void ff_mpeg_flush(AVCodecContext *avctx);
769 void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
770 void ff_write_quant_matrix(PutBitContext *pb, int16_t *matrix);
771 int ff_find_unused_picture(MpegEncContext *s, int shared);
772 void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
773 void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
775 void ff_er_frame_start(MpegEncContext *s);
776 void ff_er_frame_end(MpegEncContext *s);
777 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
780 extern enum PixelFormat ff_yuv420p_list[2];
782 void ff_init_block_index(MpegEncContext *s);
784 static inline void ff_update_block_index(MpegEncContext *s){
785 const int block_size= 8>>s->avctx->lowres;
787 s->block_index[0]+=2;
788 s->block_index[1]+=2;
789 s->block_index[2]+=2;
790 s->block_index[3]+=2;
793 s->dest[0]+= 2*block_size;
794 s->dest[1]+= block_size;
795 s->dest[2]+= block_size;
798 static inline int get_bits_diff(MpegEncContext *s){
799 const int bits= put_bits_count(&s->pb);
800 const int last= s->last_bits;
808 void ff_estimate_p_frame_motion(MpegEncContext * s,
810 void ff_estimate_b_frame_motion(MpegEncContext * s,
812 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
813 void ff_fix_long_p_mvs(MpegEncContext * s);
814 void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
815 int16_t (*mv_table)[2], int f_code, int type, int truncate);
816 void ff_init_me(MpegEncContext *s);
817 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
818 inline int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
819 int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
820 int ref_mv_scale, int size, int h);
821 int inline ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
822 int ref_index, int size, int h, int add_rate);
825 extern const int16_t ff_mpeg1_default_intra_matrix[64];
826 extern const int16_t ff_mpeg1_default_non_intra_matrix[64];
827 extern const uint8_t ff_mpeg1_dc_scale_table[128];
829 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
830 void mpeg1_encode_mb(MpegEncContext *s,
831 DCTELEM block[6][64],
832 int motion_x, int motion_y);
833 void ff_mpeg1_encode_init(MpegEncContext *s);
834 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
835 void ff_mpeg1_clean_buffers(MpegEncContext *s);
836 int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
840 typedef struct RLTable {
841 int n; ///< number of entries of table_vlc minus 1
842 int last; ///< number of values for last = 0
843 const uint16_t (*table_vlc)[2];
844 const int8_t *table_run;
845 const int8_t *table_level;
846 uint8_t *index_run[2]; ///< encoding only
847 int8_t *max_level[2]; ///< encoding & decoding
848 int8_t *max_run[2]; ///< encoding & decoding
849 VLC vlc; ///< decoding only deprected FIXME remove
850 RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
853 void init_rl(RLTable *rl, int use_static);
854 void init_vlc_rl(RLTable *rl, int use_static);
856 static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
859 index = rl->index_run[last][run];
862 if (level > rl->max_level[last][run])
864 return index + level - 1;
867 extern const uint8_t ff_mpeg4_y_dc_scale_table[32];
868 extern const uint8_t ff_mpeg4_c_dc_scale_table[32];
869 extern const uint8_t ff_aic_dc_scale_table[32];
870 extern const int16_t ff_mpeg4_default_intra_matrix[64];
871 extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
872 extern const uint8_t ff_h263_chroma_qscale_table[32];
873 extern const uint8_t ff_h263_loop_filter_strength[32];
876 void ff_h261_loop_filter(MpegEncContext *s);
877 void ff_h261_reorder_mb_index(MpegEncContext* s);
878 void ff_h261_encode_mb(MpegEncContext *s,
879 DCTELEM block[6][64],
880 int motion_x, int motion_y);
881 void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
882 void ff_h261_encode_init(MpegEncContext *s);
885 /* h263.c, h263dec.c */
886 int ff_h263_decode_init(AVCodecContext *avctx);
887 int ff_h263_decode_frame(AVCodecContext *avctx,
888 void *data, int *data_size,
889 uint8_t *buf, int buf_size);
890 int ff_h263_decode_end(AVCodecContext *avctx);
891 void h263_encode_mb(MpegEncContext *s,
892 DCTELEM block[6][64],
893 int motion_x, int motion_y);
894 void mpeg4_encode_mb(MpegEncContext *s,
895 DCTELEM block[6][64],
896 int motion_x, int motion_y);
897 void h263_encode_picture_header(MpegEncContext *s, int picture_number);
898 void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
899 void h263_encode_gob_header(MpegEncContext * s, int mb_line);
900 int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
902 void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
904 void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
905 void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
906 void h263_encode_init(MpegEncContext *s);
907 void h263_decode_init_vlc(MpegEncContext *s);
908 int h263_decode_picture_header(MpegEncContext *s);
909 int ff_h263_decode_gob_header(MpegEncContext *s);
910 int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
911 void ff_h263_update_motion_val(MpegEncContext * s);
912 void ff_h263_loop_filter(MpegEncContext * s);
913 void ff_set_qscale(MpegEncContext * s, int qscale);
914 int ff_h263_decode_mba(MpegEncContext *s);
915 void ff_h263_encode_mba(MpegEncContext *s);
917 int intel_h263_decode_picture_header(MpegEncContext *s);
918 int flv_h263_decode_picture_header(MpegEncContext *s);
919 int ff_h263_decode_mb(MpegEncContext *s,
920 DCTELEM block[6][64]);
921 int ff_mpeg4_decode_mb(MpegEncContext *s,
922 DCTELEM block[6][64]);
923 int h263_get_picture_format(int width, int height);
924 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
925 void ff_mpeg4_clean_buffers(MpegEncContext *s);
926 void ff_mpeg4_stuffing(PutBitContext * pbc);
927 void ff_mpeg4_init_partitions(MpegEncContext *s);
928 void ff_mpeg4_merge_partitions(MpegEncContext *s);
929 void ff_clean_mpeg4_qscales(MpegEncContext *s);
930 void ff_clean_h263_qscales(MpegEncContext *s);
931 int ff_mpeg4_decode_partitions(MpegEncContext *s);
932 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
933 int ff_h263_resync(MpegEncContext *s);
934 int ff_h263_get_gob_height(MpegEncContext *s);
935 int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
936 int ff_h263_round_chroma(int x);
937 void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
938 int ff_mpeg4_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
942 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
943 int rv_decode_dc(MpegEncContext *s, int n);
944 void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
948 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
949 void msmpeg4_encode_ext_header(MpegEncContext * s);
950 void msmpeg4_encode_mb(MpegEncContext * s,
951 DCTELEM block[6][64],
952 int motion_x, int motion_y);
953 int msmpeg4_decode_picture_header(MpegEncContext * s);
954 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
955 int ff_msmpeg4_decode_init(MpegEncContext *s);
956 void ff_msmpeg4_encode_init(MpegEncContext *s);
957 int ff_wmv2_decode_picture_header(MpegEncContext * s);
958 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
959 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
960 void ff_mspel_motion(MpegEncContext *s,
961 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
962 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
963 int motion_x, int motion_y, int h);
964 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
965 void ff_wmv2_encode_mb(MpegEncContext * s,
966 DCTELEM block[6][64],
967 int motion_x, int motion_y);
970 int mjpeg_init(MpegEncContext *s);
971 void mjpeg_close(MpegEncContext *s);
972 void mjpeg_encode_mb(MpegEncContext *s,
973 DCTELEM block[6][64]);
974 void mjpeg_picture_header(MpegEncContext *s);
975 void mjpeg_picture_trailer(MpegEncContext *s);
976 void ff_mjpeg_stuffing(PutBitContext * pbc);
980 int ff_rate_control_init(MpegEncContext *s);
981 float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run);
982 void ff_write_pass1_stats(MpegEncContext *s);
983 void ff_rate_control_uninit(MpegEncContext *s);
984 double ff_eval(char *s, double *const_value, const char **const_name,
985 double (**func1)(void *, double), const char **func1_name,
986 double (**func2)(void *, double, double), char **func2_name,
988 int ff_vbv_update(MpegEncContext *s, int frame_size);
989 void ff_get_2pass_fcode(MpegEncContext *s);
991 int ff_xvid_rate_control_init(MpegEncContext *s);
992 void ff_xvid_rate_control_uninit(MpegEncContext *s);
993 float ff_xvid_rate_estimate_qscale(MpegEncContext *s, int dry_run);
995 #endif /* AVCODEC_MPEGVIDEO_H */