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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #ifndef AVCODEC_MPEGVIDEO_H
27 #define AVCODEC_MPEGVIDEO_H
31 #define FRAME_SKIPED 100 ///< return value for header parsers if frame is not coded
42 #define MPEG_BUF_SIZE (16 * 1024)
44 #define QMAT_SHIFT_MMX 16
52 #define MAX_PICTURE_COUNT 15
54 #define ME_MAP_SIZE 64
55 #define ME_MAP_SHIFT 3
56 #define ME_MAP_MV_BITS 11
58 /* run length table */
62 #define I_TYPE FF_I_TYPE ///< Intra
63 #define P_TYPE FF_P_TYPE ///< Predicted
64 #define B_TYPE FF_B_TYPE ///< Bi-dir predicted
65 #define S_TYPE FF_S_TYPE ///< S(GMC)-VOP MPEG4
66 #define SI_TYPE FF_SI_TYPE ///< Switching Intra
67 #define SP_TYPE FF_SP_TYPE ///< Switching Predicted
69 typedef struct Predictor{
75 typedef struct RateControlEntry{
82 uint64_t expected_bits;
93 * rate control context.
95 typedef struct RateControlContext{
97 int num_entries; ///< number of RateControlEntries
98 RateControlEntry *entry;
99 double buffer_index; ///< amount of bits in the video/audio buffer
101 double short_term_qsum; ///< sum of recent qscales
102 double short_term_qcount; ///< count of recent qscales
103 double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization
104 double pass1_wanted_bits; ///< bits which should have been outputed by the pass1 code (including complexity init)
106 double last_qscale_for[5]; ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff
107 int last_mc_mb_var_sum;
109 uint64_t i_cplx_sum[5];
110 uint64_t p_cplx_sum[5];
111 uint64_t mv_bits_sum[5];
112 uint64_t qscale_sum[5];
114 int last_non_b_pict_type;
120 typedef struct ScanTable{
121 const uint8_t *scantable;
122 uint8_t permutated[64];
123 uint8_t raster_end[64];
125 /** Used by dct_quantise_alitvec to find last-non-zero */
126 uint8_t __align8 inverse[64];
133 typedef struct Picture{
137 * halfpel luma planes.
139 uint8_t *interpolated[3];
140 int16_t (*motion_val_base[2])[2];
141 int8_t *ref_index[2];
142 uint32_t *mb_type_base;
143 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if theres just one type
144 #define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
145 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
146 #define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
147 #define IS_INTRA(a) ((a)&7)
148 #define IS_INTER(a) ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
149 #define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
150 #define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
151 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
152 #define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
153 #define IS_GMC(a) ((a)&MB_TYPE_GMC)
154 #define IS_16X16(a) ((a)&MB_TYPE_16x16)
155 #define IS_16X8(a) ((a)&MB_TYPE_16x8)
156 #define IS_8X16(a) ((a)&MB_TYPE_8x16)
157 #define IS_8X8(a) ((a)&MB_TYPE_8x8)
158 #define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
159 #define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
160 #define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
161 #define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
162 #define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
163 #define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
164 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
165 #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
166 #define HAS_CBP(a) ((a)&MB_TYPE_CBP)
168 int field_poc[2]; ///< h264 top/bottom POC
169 int poc; ///< h264 frame POC
170 int frame_num; ///< h264 frame_num
171 int pic_id; ///< h264 pic_num or long_term_pic_idx
172 int long_ref; ///< 1->long term reference 0->short term reference
174 int mb_var_sum; ///< sum of MB variance for current frame
175 int mc_mb_var_sum; ///< motion compensated MB variance for current frame
176 uint16_t *mb_var; ///< Table for MB variances
177 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
178 uint8_t *mb_mean; ///< Table for MB luminance
179 int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decission FIXME remove
180 int b_frame_score; /* */
183 typedef struct ParseContext{
188 uint32_t state; ///< contains the last few bytes in MSB order
189 int frame_start_found;
190 int overread; ///< the number of bytes which where irreversibly read from the next frame
191 int overread_index; ///< the index into ParseContext.buffer of the overreaded bytes
194 struct MpegEncContext;
197 * Motion estimation context.
199 typedef struct MotionEstContext{
200 int skip; ///< set if ME is skiped for the current MB
201 int co_located_mv[4][2]; ///< mv from last p frame for direct mode ME
202 int direct_basis_mv[4][2];
203 uint8_t *scratchpad; ///< data area for the me algo, so that the ME doesnt need to malloc/free
204 uint32_t *map; ///< map to avoid duplicate evaluations
205 uint32_t *score_map; ///< map to store the scores
207 int pre_penalty_factor;
209 int sub_penalty_factor;
210 int mb_penalty_factor;
211 int pre_pass; ///< = 1 for the pre pass
217 uint8_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
218 int (*sub_motion_search)(struct MpegEncContext * s,
219 int *mx_ptr, int *my_ptr, int dmin,
220 int pred_x, int pred_y, uint8_t *src_data[3],
221 uint8_t *ref_data[6], int stride, int uvstride,
222 int size, int h, uint8_t * const mv_penalty);
223 int (*motion_search[7])(struct MpegEncContext * s,
224 int *mx_ptr, int *my_ptr,
225 int P[10][2], int pred_x, int pred_y, uint8_t *src_data[3],
226 uint8_t *ref_data[6], int stride, int uvstride, int16_t (*last_mv)[2],
227 int ref_mv_scale, uint8_t * const mv_penalty);
228 int (*pre_motion_search)(struct MpegEncContext * s,
229 int *mx_ptr, int *my_ptr,
230 int P[10][2], int pred_x, int pred_y, uint8_t *src_data[3],
231 uint8_t *ref_data[6], int stride, int uvstride, int16_t (*last_mv)[2],
232 int ref_mv_scale, uint8_t * const mv_penalty);
233 int (*get_mb_score)(struct MpegEncContext * s, int mx, int my, int pred_x, int pred_y, uint8_t *src_data[3],
234 uint8_t *ref_data[6], int stride, int uvstride,
235 uint8_t * const mv_penalty);
241 typedef struct MpegEncContext {
242 struct AVCodecContext *avctx;
243 /* the following parameters must be initialized before encoding */
244 int width, height;///< picture size. must be a multiple of 16
246 int intra_only; ///< if true, only intra pictures are generated
247 int bit_rate; ///< wanted bit rate
248 enum OutputFormat out_format; ///< output format
249 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
251 /* the following codec id fields are deprecated in favor of codec_id */
252 int h263_plus; ///< h263 plus headers
253 int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
254 int h263_flv; ///< use flv h263 header
256 int codec_id; /* see CODEC_ID_xxx */
257 int fixed_qscale; ///< fixed qscale if non zero
258 int encoding; ///< true if we are encoding (vs decoding)
259 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
260 int flags2; ///< AVCodecContext.flags2
261 int max_b_frames; ///< max number of b-frames for encoding
262 int luma_elim_threshold;
263 int chroma_elim_threshold;
264 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
265 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
266 /* the following fields are managed internally by the encoder */
271 /* sequence parameters */
272 int context_initialized;
273 int input_picture_number; ///< used to set pic->display_picture_number, shouldnt be used for/by anything else
274 int coded_picture_number; ///< used to set pic->coded_picture_number, shouldnt be used for/by anything else
275 int picture_number; //FIXME remove, unclear definition
276 int picture_in_gop_number; ///< 0-> first pic in gop, ...
277 int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
278 int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
279 int mb_width, mb_height; ///< number of MBs horizontally & vertically
280 int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressng of left & top MBs withoutt sig11
281 int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressng
282 int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressng
283 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replicateion)
284 int mb_num; ///< number of MBs of a picture
285 int linesize; ///< line size, in bytes, may be different from width
286 int uvlinesize; ///< line size, for chroma in bytes, may be different from width
287 Picture *picture; ///< main picture buffer
288 Picture **input_picture; ///< next pictures on display order for encoding
289 Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
291 int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
292 int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
293 struct MpegEncContext *thread_context[MAX_THREADS];
296 * copy of the previous picture structure.
297 * note, linesize & data, might not match the previous picture (for field pictures)
299 Picture last_picture;
302 * copy of the next picture structure.
303 * note, linesize & data, might not match the next picture (for field pictures)
305 Picture next_picture;
308 * copy of the source picture structure for encoding.
309 * note, linesize & data, might not match the source picture (for field pictures)
314 * copy of the current picture structure.
315 * note, linesize & data, might not match the current picture (for field pictures)
317 Picture current_picture; ///< buffer to store the decompressed current picture
319 Picture *last_picture_ptr; ///< pointer to the previous picture.
320 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
321 Picture *current_picture_ptr; ///< pointer to the current picture
322 uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
323 int last_dc[3]; ///< last DC values for MPEG1
324 int16_t *dc_val_base;
325 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
326 int16_t dc_cache[4*5];
327 int y_dc_scale, c_dc_scale;
328 uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
329 uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
330 const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
331 uint8_t *coded_block_base;
332 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
333 int16_t (*ac_val_base)[16];
334 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
336 uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
337 #define PREV_PICT_TYPES_BUFFER_SIZE 256
338 int mb_skiped; ///< MUST BE SET only during DECODING
339 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
340 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
341 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
342 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
343 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
344 uint8_t *allocated_edge_emu_buffer;
345 uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
346 uint8_t *rd_scratchpad; ///< scartchpad for rate distortion mb decission
347 uint8_t *obmc_scratchpad;
348 uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
351 int chroma_qscale; ///< chroma QP
352 int lambda; ///< lagrange multipler used in rate distortion
353 int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
355 int adaptive_quant; ///< use adaptive quantization
356 int dquant; ///< qscale difference to prev qscale
357 int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
359 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
360 int frame_rate_index;
361 int frame_rate_ext_n; ///< MPEG-2 specific framerate modificators (numerator)
362 int frame_rate_ext_d; ///< MPEG-2 specific framerate modificators (denominator)
364 /* motion compensation */
365 int unrestricted_mv; ///< mv can point outside of the coded picture
366 int h263_long_vectors; ///< use horrible h263v1 long vector mode
367 int decode; ///< if 0 then decoding will be skiped (for encoding b frames for example)
369 DSPContext dsp; ///< pointers for accelerated dsp fucntions
370 int f_code; ///< forward MV resolution
371 int b_code; ///< backward MV resolution for B Frames (mpeg4)
372 int16_t (*p_mv_table_base)[2];
373 int16_t (*b_forw_mv_table_base)[2];
374 int16_t (*b_back_mv_table_base)[2];
375 int16_t (*b_bidir_forw_mv_table_base)[2];
376 int16_t (*b_bidir_back_mv_table_base)[2];
377 int16_t (*b_direct_mv_table_base)[2];
378 int16_t (*p_field_mv_table_base[2][2])[2];
379 int16_t (*b_field_mv_table_base[2][2][2])[2];
380 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
381 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
382 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
383 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
384 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
385 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
386 int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
387 int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
388 uint8_t (*p_field_select_table[2]);
389 uint8_t (*b_field_select_table[2][2]);
390 int me_method; ///< ME algorithm
391 int scene_change_score;
393 #define MV_DIR_BACKWARD 1
394 #define MV_DIR_FORWARD 2
395 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
397 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
398 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
399 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
400 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
401 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
402 /**motion vectors for a macroblock
403 first coordinate : 0 = forward 1 = backward
404 second " : depend on type
405 third " : 0 = x, 1 = y
408 int field_select[2][2];
409 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
410 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
414 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
415 for b-frames rounding mode is allways 0 */
417 int hurry_up; /**< when set to 1 during decoding, b frames will be skiped
418 when set to 2 idct/dequant will be skipped too */
420 /* macroblock layer */
424 uint16_t *mb_type; ///< Table for candidate MB types for encoding
425 #define CANDIDATE_MB_TYPE_INTRA 0x01
426 #define CANDIDATE_MB_TYPE_INTER 0x02
427 #define CANDIDATE_MB_TYPE_INTER4V 0x04
428 #define CANDIDATE_MB_TYPE_SKIPED 0x08
429 //#define MB_TYPE_GMC 0x10
431 #define CANDIDATE_MB_TYPE_DIRECT 0x10
432 #define CANDIDATE_MB_TYPE_FORWARD 0x20
433 #define CANDIDATE_MB_TYPE_BACKWARD 0x40
434 #define CANDIDATE_MB_TYPE_BIDIR 0x80
436 #define CANDIDATE_MB_TYPE_INTER_I 0x100
437 #define CANDIDATE_MB_TYPE_FORWARD_I 0x200
438 #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
439 #define CANDIDATE_MB_TYPE_BIDIR_I 0x800
441 int block_index[6]; ///< index to current MB in block based arrays with edges
445 int *mb_index2xy; ///< mb_index -> mb_x + mb_y*mb_stride
447 /** matrix transmitted in the bitstream */
448 uint16_t intra_matrix[64];
449 uint16_t chroma_intra_matrix[64];
450 uint16_t inter_matrix[64];
451 uint16_t chroma_inter_matrix[64];
452 #define QUANT_BIAS_SHIFT 8
453 int intra_quant_bias; ///< bias for the quantizer
454 int inter_quant_bias; ///< bias for the quantizer
455 int min_qcoeff; ///< minimum encodable coefficient
456 int max_qcoeff; ///< maximum encodable coefficient
457 int ac_esc_length; ///< num of bits needed to encode the longest esc
458 uint8_t *intra_ac_vlc_length;
459 uint8_t *intra_ac_vlc_last_length;
460 uint8_t *inter_ac_vlc_length;
461 uint8_t *inter_ac_vlc_last_length;
462 uint8_t *luma_dc_vlc_length;
463 uint8_t *chroma_dc_vlc_length;
464 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
468 /** precomputed matrix (combine qscale and DCT renorm) */
469 int (*q_intra_matrix)[64];
470 int (*q_inter_matrix)[64];
471 /** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
472 uint16_t (*q_intra_matrix16)[2][64];
473 uint16_t (*q_inter_matrix16)[2][64];
474 int block_last_index[12]; ///< last non zero coefficient in block
476 ScanTable __align8 intra_scantable;
477 ScanTable intra_h_scantable;
478 ScanTable intra_v_scantable;
479 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
481 /* noise reduction */
482 int (*dct_error_sum)[64];
484 uint16_t (*dct_offset)[64];
486 void *opaque; ///< private data for the user
488 /* bit rate control */
491 int frame_bits; ///< bits used for the current frame
492 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
494 /* statistics, used for 2-pass encoding */
503 int misc_bits; ///< cbp, mb_type
504 int last_bits; ///< temp var used for calculating the above vars
506 /* temp variables for picture complexity calculation */
507 int mc_mb_var_sum_temp;
510 /* error concealment / resync */
512 uint8_t *error_status_table; ///< table of the error status of each MB
513 #define VP_START 1 ///< current MB is the first after a resync marker
522 int resync_mb_x; ///< x position of last resync marker
523 int resync_mb_y; ///< y position of last resync marker
524 GetBitContext last_resync_gb; ///< used to search for the next resync marker
525 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
526 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
527 int error_resilience;
529 ParseContext parse_context;
533 int obmc; ///< overlapped block motion compensation
535 /* H.263+ specific */
536 int umvplus; ///< == H263+ && unrestricted_mv
537 int h263_aic; ///< Advanded INTRA Coding (AIC)
538 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
539 int h263_slice_structured;
540 int alt_inter_vlc; ///< alternative inter vlc
546 int time_increment_resolution;
547 int time_increment_bits; ///< number of bits to represent the fractional part of time
549 int time_base; ///< time in seconds of last I,P,S Frame
550 int64_t time; ///< time of current frame
551 int64_t last_non_b_time;
552 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
553 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
554 uint16_t pp_field_time;
555 uint16_t pb_field_time; ///< like above, just for interlaced
557 int vol_sprite_usage;
562 int sprite_brightness_change;
563 int num_sprite_warping_points;
564 int real_sprite_warping_points;
565 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
566 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
567 int sprite_shift[2]; ///< sprite shift [isChroma]
570 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
573 int enhancement_type;
576 int aspect_ratio_info; //FIXME remove
577 int sprite_warping_accuracy;
578 int low_latency_sprite;
579 int data_partitioning; ///< data partitioning flag from header
580 int partitioned_frame; ///< is current frame partitioned
581 int rvlc; ///< reversible vlc
582 int resync_marker; ///< could this stream contain resync markers
583 int low_delay; ///< no reordering needed / has no b-frames
585 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
586 int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
587 PutBitContext tex_pb; ///< used for data partitioned VOPs
588 PutBitContext pb2; ///< used for data partitioned VOPs
590 int t_frame; ///< time distance of first I -> B, used for interlaced b frames
591 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
593 /* divx specific, used to workaround (many) bugs in divx5 */
597 #define BITSTREAM_BUFFER_SIZE 1024*256
598 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
599 int bitstream_buffer_size;
603 /* lavc specific stuff, used to workaround bugs in libavcodec */
608 int rv10_version; ///< RV10 version: 0 or 3
609 int rv10_first_dc_coded[3];
612 struct MJpegContext *mjpeg_ctx;
613 int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
614 int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
615 int mjpeg_write_tables; ///< do we want to have quantisation- and huffmantables in the jpeg file ?
616 int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers
618 /* MSMPEG4 specific */
621 int rl_chroma_table_index;
623 int use_skip_mb_code;
624 int slice_height; ///< in macroblocks
625 int first_slice_line; ///< used in mpeg4 too to handle resync markers
626 int flipflop_rounding;
627 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
629 int esc3_level_length;
631 /** [mb_intra][isChroma][level][run][last] */
632 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
633 int inter_intra_pred;
636 /* decompression specific */
640 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
641 int last_mv_dir; ///< last mv_dir, used for b frame encoding
642 int broken_link; ///< no_output_of_prior_pics_flag
643 uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
645 /* MPEG2 specific - I wish I had not to support this mess. */
646 int progressive_sequence;
647 int mpeg_f_code[2][2];
648 int picture_structure;
650 #define PICT_TOP_FIELD 1
651 #define PICT_BOTTOM_FIELD 2
654 int intra_dc_precision;
655 int frame_pred_frame_dct;
657 int concealment_motion_vectors;
659 int intra_vlc_format;
661 int repeat_first_field;
668 int progressive_frame;
672 int first_field; ///< is 1 for the first field of a field picture 0 otherwise
677 uint8_t *ptr_lastgob;
678 int swap_uv;//vcr2 codec is mpeg2 varint with UV swaped
681 DCTELEM (*block)[64]; ///< points to one of the following blocks
682 DCTELEM (*blocks)[6][64]; // for HQ mode we need to keep the best block
683 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
685 #define SLICE_ERROR -1
686 #define SLICE_END -2 ///<end marker found
687 #define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
689 void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
690 DCTELEM *block/*align 16*/, int n, int qscale);
691 void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
692 DCTELEM *block/*align 16*/, int n, int qscale);
693 void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
694 DCTELEM *block/*align 16*/, int n, int qscale);
695 void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
696 DCTELEM *block/*align 16*/, int n, int qscale);
697 void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
698 DCTELEM *block/*align 16*/, int n, int qscale);
699 void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
700 DCTELEM *block/*align 16*/, int n, int qscale);
701 void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
702 DCTELEM *block/*align 16*/, int n, int qscale);
703 void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
704 DCTELEM *block/*align 16*/, int n, int qscale);
705 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
706 int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
707 void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
711 int DCT_common_init(MpegEncContext *s);
712 void MPV_decode_defaults(MpegEncContext *s);
713 int MPV_common_init(MpegEncContext *s);
714 void MPV_common_end(MpegEncContext *s);
715 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
716 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
717 void MPV_frame_end(MpegEncContext *s);
718 int MPV_encode_init(AVCodecContext *avctx);
719 int MPV_encode_end(AVCodecContext *avctx);
720 int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
722 void MPV_common_init_mmx(MpegEncContext *s);
725 void MPV_common_init_axp(MpegEncContext *s);
728 void MPV_common_init_mlib(MpegEncContext *s);
731 void MPV_common_init_mmi(MpegEncContext *s);
734 void MPV_common_init_armv4l(MpegEncContext *s);
737 void MPV_common_init_ppc(MpegEncContext *s);
739 extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
740 void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
741 void ff_clean_intra_table_entries(MpegEncContext *s);
742 void ff_init_scantable(uint8_t *, ScanTable *st, const uint8_t *src_scantable);
743 void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
744 void ff_emulated_edge_mc(uint8_t *buf, uint8_t *src, int linesize, int block_w, int block_h,
745 int src_x, int src_y, int w, int h);
746 #define END_NOT_FOUND -100
747 int ff_combine_frame( MpegEncContext *s, int next, uint8_t **buf, int *buf_size);
748 void ff_mpeg_flush(AVCodecContext *avctx);
749 void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
750 void ff_write_quant_matrix(PutBitContext *pb, int16_t *matrix);
751 int ff_find_unused_picture(MpegEncContext *s, int shared);
752 void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
753 void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
755 void ff_er_frame_start(MpegEncContext *s);
756 void ff_er_frame_end(MpegEncContext *s);
757 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
760 extern enum PixelFormat ff_yuv420p_list[2];
762 void ff_init_block_index(MpegEncContext *s);
764 static inline void ff_update_block_index(MpegEncContext *s){
765 s->block_index[0]+=2;
766 s->block_index[1]+=2;
767 s->block_index[2]+=2;
768 s->block_index[3]+=2;
776 static inline int get_bits_diff(MpegEncContext *s){
777 const int bits= put_bits_count(&s->pb);
778 const int last= s->last_bits;
786 void ff_estimate_p_frame_motion(MpegEncContext * s,
788 void ff_estimate_b_frame_motion(MpegEncContext * s,
790 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
791 void ff_fix_long_p_mvs(MpegEncContext * s);
792 void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
793 int16_t (*mv_table)[2], int f_code, int type, int truncate);
794 void ff_init_me(MpegEncContext *s);
795 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
799 extern const int16_t ff_mpeg1_default_intra_matrix[64];
800 extern const int16_t ff_mpeg1_default_non_intra_matrix[64];
801 extern uint8_t ff_mpeg1_dc_scale_table[128];
803 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
804 void mpeg1_encode_mb(MpegEncContext *s,
805 DCTELEM block[6][64],
806 int motion_x, int motion_y);
807 void ff_mpeg1_encode_init(MpegEncContext *s);
808 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
809 void ff_mpeg1_clean_buffers(MpegEncContext *s);
813 typedef struct RLTable {
814 int n; ///< number of entries of table_vlc minus 1
815 int last; ///< number of values for last = 0
816 const uint16_t (*table_vlc)[2];
817 const int8_t *table_run;
818 const int8_t *table_level;
819 uint8_t *index_run[2]; ///< encoding only
820 int8_t *max_level[2]; ///< encoding & decoding
821 int8_t *max_run[2]; ///< encoding & decoding
822 VLC vlc; ///< decoding only deprected FIXME remove
823 RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
826 void init_rl(RLTable *rl);
827 void init_vlc_rl(RLTable *rl);
829 static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
832 index = rl->index_run[last][run];
835 if (level > rl->max_level[last][run])
837 return index + level - 1;
840 extern uint8_t ff_mpeg4_y_dc_scale_table[32];
841 extern uint8_t ff_mpeg4_c_dc_scale_table[32];
842 extern uint8_t ff_aic_dc_scale_table[32];
843 extern const int16_t ff_mpeg4_default_intra_matrix[64];
844 extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
845 extern const uint8_t ff_h263_chroma_qscale_table[32];
846 extern const uint8_t ff_h263_loop_filter_strength[32];
849 int ff_h263_decode_init(AVCodecContext *avctx);
850 int ff_h263_decode_frame(AVCodecContext *avctx,
851 void *data, int *data_size,
852 uint8_t *buf, int buf_size);
853 int ff_h263_decode_end(AVCodecContext *avctx);
854 void h263_encode_mb(MpegEncContext *s,
855 DCTELEM block[6][64],
856 int motion_x, int motion_y);
857 void mpeg4_encode_mb(MpegEncContext *s,
858 DCTELEM block[6][64],
859 int motion_x, int motion_y);
860 void h263_encode_picture_header(MpegEncContext *s, int picture_number);
861 void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
862 void h263_encode_gob_header(MpegEncContext * s, int mb_line);
863 int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
865 void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
867 void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
868 void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
869 void h263_encode_init(MpegEncContext *s);
870 void h263_decode_init_vlc(MpegEncContext *s);
871 int h263_decode_picture_header(MpegEncContext *s);
872 int ff_h263_decode_gob_header(MpegEncContext *s);
873 int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
874 void ff_h263_update_motion_val(MpegEncContext * s);
875 void ff_h263_loop_filter(MpegEncContext * s);
876 void ff_set_qscale(MpegEncContext * s, int qscale);
877 int ff_h263_decode_mba(MpegEncContext *s);
878 void ff_h263_encode_mba(MpegEncContext *s);
880 int intel_h263_decode_picture_header(MpegEncContext *s);
881 int flv_h263_decode_picture_header(MpegEncContext *s);
882 int ff_h263_decode_mb(MpegEncContext *s,
883 DCTELEM block[6][64]);
884 int ff_mpeg4_decode_mb(MpegEncContext *s,
885 DCTELEM block[6][64]);
886 int h263_get_picture_format(int width, int height);
887 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
888 void ff_mpeg4_clean_buffers(MpegEncContext *s);
889 void ff_mpeg4_stuffing(PutBitContext * pbc);
890 void ff_mpeg4_init_partitions(MpegEncContext *s);
891 void ff_mpeg4_merge_partitions(MpegEncContext *s);
892 void ff_clean_mpeg4_qscales(MpegEncContext *s);
893 void ff_clean_h263_qscales(MpegEncContext *s);
894 int ff_mpeg4_decode_partitions(MpegEncContext *s);
895 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
896 int ff_h263_resync(MpegEncContext *s);
897 int ff_h263_get_gob_height(MpegEncContext *s);
898 int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
899 inline int ff_h263_round_chroma(int x);
903 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
904 int rv_decode_dc(MpegEncContext *s, int n);
908 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
909 void msmpeg4_encode_ext_header(MpegEncContext * s);
910 void msmpeg4_encode_mb(MpegEncContext * s,
911 DCTELEM block[6][64],
912 int motion_x, int motion_y);
913 int msmpeg4_decode_picture_header(MpegEncContext * s);
914 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
915 int ff_msmpeg4_decode_init(MpegEncContext *s);
916 void ff_msmpeg4_encode_init(MpegEncContext *s);
917 int ff_wmv2_decode_picture_header(MpegEncContext * s);
918 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
919 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
920 void ff_mspel_motion(MpegEncContext *s,
921 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
922 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
923 int motion_x, int motion_y, int h);
924 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
925 void ff_wmv2_encode_mb(MpegEncContext * s,
926 DCTELEM block[6][64],
927 int motion_x, int motion_y);
930 int mjpeg_init(MpegEncContext *s);
931 void mjpeg_close(MpegEncContext *s);
932 void mjpeg_encode_mb(MpegEncContext *s,
933 DCTELEM block[6][64]);
934 void mjpeg_picture_header(MpegEncContext *s);
935 void mjpeg_picture_trailer(MpegEncContext *s);
936 void ff_mjpeg_stuffing(PutBitContext * pbc);
940 int ff_rate_control_init(MpegEncContext *s);
941 float ff_rate_estimate_qscale(MpegEncContext *s);
942 void ff_write_pass1_stats(MpegEncContext *s);
943 void ff_rate_control_uninit(MpegEncContext *s);
944 double ff_eval(char *s, double *const_value, const char **const_name,
945 double (**func1)(void *, double), const char **func1_name,
946 double (**func2)(void *, double, double), char **func2_name,
948 int ff_vbv_update(MpegEncContext *s, int frame_size);
951 #endif /* AVCODEC_MPEGVIDEO_H */