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
40 #define MPEG_BUF_SIZE (16 * 1024)
42 #define QMAT_SHIFT_MMX 16
48 #define MAX_PICTURE_COUNT 15
50 #define ME_MAP_SIZE 64
51 #define ME_MAP_SHIFT 3
52 #define ME_MAP_MV_BITS 11
54 /* run length table */
58 #define I_TYPE FF_I_TYPE ///< Intra
59 #define P_TYPE FF_P_TYPE ///< Predicted
60 #define B_TYPE FF_B_TYPE ///< Bi-dir predicted
61 #define S_TYPE FF_S_TYPE ///< S(GMC)-VOP MPEG4
63 typedef struct Predictor{
69 typedef struct RateControlEntry{
76 uint64_t expected_bits;
87 * rate control context.
89 typedef struct RateControlContext{
91 int num_entries; ///< number of RateControlEntries
92 RateControlEntry *entry;
93 int buffer_index; ///< amount of bits in the video/audio buffer
95 double short_term_qsum; ///< sum of recent qscales
96 double short_term_qcount; ///< count of recent qscales
97 double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization
98 double pass1_wanted_bits; ///< bits which should have been outputed by the pass1 code (including complexity init)
100 double last_qscale_for[5]; ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff
101 int last_mc_mb_var_sum;
103 uint64_t i_cplx_sum[5];
104 uint64_t p_cplx_sum[5];
105 uint64_t mv_bits_sum[5];
106 uint64_t qscale_sum[5];
108 int last_non_b_pict_type;
114 typedef struct ScanTable{
115 const uint8_t *scantable;
116 uint8_t permutated[64];
117 uint8_t raster_end[64];
119 /** Used by dct_quantise_alitvec to find last-non-zero */
120 uint8_t __align8 inverse[64];
127 typedef struct Picture{
130 int mb_var_sum; ///< sum of MB variance for current frame
131 int mc_mb_var_sum; ///< motion compensated MB variance for current frame
132 uint16_t *mb_var; ///< Table for MB variances
133 uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
134 uint8_t *mb_mean; ///< Table for MB luminance
135 int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decission
136 int b_frame_score; /* */
139 typedef struct ParseContext{
145 int frame_start_found;
148 struct MpegEncContext;
151 * Motion estimation context.
153 typedef struct MotionEstContext{
154 int skip; ///< set if ME is skiped for the current MB
155 int co_located_mv[4][2]; ///< mv from last p frame for direct mode ME
156 int direct_basis_mv[4][2];
157 uint8_t *scratchpad; ///< data area for the me algo, so that the ME doesnt need to malloc/free
158 uint32_t *map; ///< map to avoid duplicate evaluations
159 uint32_t *score_map; ///< map to store the scores
161 int pre_penalty_factor;
163 int sub_penalty_factor;
164 int mb_penalty_factor;
165 int pre_pass; ///< = 1 for the pre pass
167 uint16_t (*mv_penalty)[MAX_MV*2+1]; ///< amount of bits needed to encode a MV
168 int (*sub_motion_search)(struct MpegEncContext * s,
169 int *mx_ptr, int *my_ptr, int dmin,
170 int xmin, int ymin, int xmax, int ymax,
171 int pred_x, int pred_y, Picture *ref_picture,
172 int n, int size, uint16_t * const mv_penalty);
173 int (*motion_search[7])(struct MpegEncContext * s, int block,
174 int *mx_ptr, int *my_ptr,
175 int P[10][2], int pred_x, int pred_y,
176 int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2],
177 int ref_mv_scale, uint16_t * const mv_penalty);
178 int (*pre_motion_search)(struct MpegEncContext * s, int block,
179 int *mx_ptr, int *my_ptr,
180 int P[10][2], int pred_x, int pred_y,
181 int xmin, int ymin, int xmax, int ymax, Picture *ref_picture, int16_t (*last_mv)[2],
182 int ref_mv_scale, uint16_t * const mv_penalty);
183 int (*get_mb_score)(struct MpegEncContext * s, int mx, int my, int pred_x, int pred_y, Picture *ref_picture,
184 uint16_t * const mv_penalty);
190 typedef struct MpegEncContext {
191 struct AVCodecContext *avctx;
192 /* the following parameters must be initialized before encoding */
193 int width, height;///< picture size. must be a multiple of 16
195 int intra_only; ///< if true, only intra pictures are generated
196 int bit_rate; ///< wanted bit rate
197 int bit_rate_tolerance; ///< amount of +- bits (>0)
198 enum OutputFormat out_format; ///< output format
199 int h263_pred; ///< use mpeg4/h263 ac/dc predictions
201 /* the following codec id fields are deprecated in favor of codec_id */
202 int h263_plus; ///< h263 plus headers
203 int h263_rv10; ///< use RV10 variation for H263
204 int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
205 int h263_intel; ///< use I263 intel h263 header
207 int codec_id; /* see CODEC_ID_xxx */
208 int fixed_qscale; ///< fixed qscale if non zero
209 float qcompress; ///< amount of qscale change between easy & hard scenes (0.0-1.0)
210 float qblur; ///< amount of qscale smoothing over time (0.0-1.0)
211 int max_qdiff; ///< max qscale difference between frames
212 int encoding; ///< true if we are encoding (vs decoding)
213 int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
214 int max_b_frames; ///< max number of b-frames for encoding
215 int b_frame_strategy;
216 int luma_elim_threshold;
217 int chroma_elim_threshold;
218 int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
219 int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
220 /* the following fields are managed internally by the encoder */
225 /* sequence parameters */
226 int context_initialized;
227 int input_picture_number;
229 int picture_in_gop_number; ///< 0-> first pic in gop, ...
230 int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
231 int mb_width, mb_height; ///< number of MBs horizontally & vertically
232 int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replicateion)
233 int mb_num; ///< number of MBs of a picture
234 int linesize; ///< line size, in bytes, may be different from width
235 int uvlinesize; ///< line size, for chroma in bytes, may be different from width
236 Picture picture[MAX_PICTURE_COUNT]; ///< main picture buffer
237 Picture *input_picture[MAX_PICTURE_COUNT]; ///< next pictures on display order for encoding
238 Picture *reordered_input_picture[MAX_PICTURE_COUNT]; ///< pointer to the next pictures in codedorder for encoding
241 * copy of the previous picture structure.
242 * note, linesize & data, might not match the previous picture (for field pictures)
244 Picture last_picture;
247 * copy of the next picture structure.
248 * note, linesize & data, might not match the next picture (for field pictures)
250 Picture next_picture;
253 * copy of the source picture structure for encoding.
254 * note, linesize & data, might not match the source picture (for field pictures)
259 * copy of the current picture structure.
260 * note, linesize & data, might not match the current picture (for field pictures)
262 Picture current_picture; ///< buffer to store the decompressed current picture
264 Picture *last_picture_ptr; ///< pointer to the previous picture.
265 Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
266 Picture *new_picture_ptr; ///< pointer to the source picture for encoding
267 Picture *current_picture_ptr; ///< pointer to the current picture
268 int last_dc[3]; ///< last DC values for MPEG1
269 int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
270 int y_dc_scale, c_dc_scale;
271 uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
272 uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
273 uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
274 int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
276 uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
277 #define PREV_PICT_TYPES_BUFFER_SIZE 256
278 int mb_skiped; ///< MUST BE SET only during DECODING
279 uint8_t *mbskip_table; /**< used to avoid copy if macroblock skipped (for black regions for example)
280 and used for b-frame encoding & decoding (contains skip table of next P Frame) */
281 uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
282 uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
283 uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
284 uint8_t *allocated_edge_emu_buffer;
285 uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
288 float frame_qscale; ///< qscale from the frame level rc FIXME remove
289 int adaptive_quant; ///< use adaptive quantization
290 int dquant; ///< qscale difference to prev qscale
291 int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
293 int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
294 int frame_rate_index;
295 /* motion compensation */
296 int unrestricted_mv; ///< mv can point outside of the coded picture
297 int h263_long_vectors; ///< use horrible h263v1 long vector mode
299 DSPContext dsp; ///< pointers for accelerated dsp fucntions
300 int f_code; ///< forward MV resolution
301 int b_code; ///< backward MV resolution for B Frames (mpeg4)
302 int16_t (*motion_val)[2]; ///< used for MV prediction (4MV per MB)
303 int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
304 int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
305 int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
306 int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
307 int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
308 int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
309 int me_method; ///< ME algorithm
310 int scene_change_score;
312 #define MV_DIR_BACKWARD 1
313 #define MV_DIR_FORWARD 2
314 #define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
316 #define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
317 #define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
318 #define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
319 #define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
320 #define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
321 /**motion vectors for a macroblock
322 first coordinate : 0 = forward 1 = backward
323 second " : depend on type
324 third " : 0 = x, 1 = y
327 int field_select[2][2];
328 int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
329 uint8_t *fcode_tab; ///< smallest fcode needed for each MV
333 int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
334 for b-frames rounding mode is allways 0 */
336 int hurry_up; /**< when set to 1 during decoding, b frames will be skiped
337 when set to 2 idct/dequant will be skipped too */
339 /* macroblock layer */
343 uint8_t *mb_type; ///< Table for MB type
344 #define MB_TYPE_INTRA 0x01
345 #define MB_TYPE_INTER 0x02
346 #define MB_TYPE_INTER4V 0x04
347 #define MB_TYPE_SKIPED 0x08
348 #define MB_TYPE_GMC 0x10
350 #define MB_TYPE_DIRECT 0x10
351 #define MB_TYPE_FORWARD 0x20
352 #define MB_TYPE_BACKWARD 0x40
353 #define MB_TYPE_BIDIR 0x80
355 int block_index[6]; ///< index to current MB in block based arrays with edges
358 /** matrix transmitted in the bitstream */
359 uint16_t intra_matrix[64];
360 uint16_t chroma_intra_matrix[64];
361 uint16_t inter_matrix[64];
362 uint16_t chroma_inter_matrix[64];
363 #define QUANT_BIAS_SHIFT 4
364 int intra_quant_bias; ///< bias for the quantizer
365 int inter_quant_bias; ///< bias for the quantizer
366 int min_qcoeff; ///< minimum encodable coefficient
367 int max_qcoeff; ///< maximum encodable coefficient
368 int ac_esc_length; ///< num of bits needed to encode the longest esc
369 uint8_t *intra_ac_vlc_length;
370 uint8_t *intra_ac_vlc_last_length;
371 uint8_t *inter_ac_vlc_length;
372 uint8_t *inter_ac_vlc_last_length;
373 uint8_t *luma_dc_vlc_length;
374 uint8_t *chroma_dc_vlc_length;
375 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
377 /** precomputed matrix (combine qscale and DCT renorm) */
378 int __align8 q_intra_matrix[32][64];
379 int __align8 q_inter_matrix[32][64];
380 /** identical to the above but for MMX & these are not permutated */
381 uint16_t __align8 q_intra_matrix16[32][64];
382 uint16_t __align8 q_inter_matrix16[32][64];
383 uint16_t __align8 q_intra_matrix16_bias[32][64];
384 uint16_t __align8 q_inter_matrix16_bias[32][64];
385 int block_last_index[6]; ///< last non zero coefficient in block
387 ScanTable __align8 intra_scantable;
388 ScanTable intra_h_scantable;
389 ScanTable intra_v_scantable;
390 ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
392 void *opaque; ///< private data for the user
394 /* bit rate control */
395 int I_frame_bits; //FIXME used in mpeg12 ...
398 int frame_bits; ///< bits used for the current frame
399 RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
401 /* statistics, used for 2-pass encoding */
410 int misc_bits; ///< cbp, mb_type
411 int last_bits; ///< temp var used for calculating the above vars
413 /* error concealment / resync */
414 uint8_t *error_status_table; ///< table of the error status of each MB
415 #define VP_START 1 ///< current MB is the first after a resync marker
424 int resync_mb_x; ///< x position of last resync marker
425 int resync_mb_y; ///< y position of last resync marker
426 GetBitContext last_resync_gb; ///< used to search for the next resync marker
427 int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
428 int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
429 int error_resilience;
431 ParseContext parse_context;
437 /* H.263+ specific */
438 int umvplus; ///< == H263+ && unrestricted_mv
439 int h263_aic; ///< Advanded INTRA Coding (AIC)
440 int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
443 int time_increment_resolution;
444 int time_increment_bits; ///< number of bits to represent the fractional part of time
446 int time_base; ///< time in seconds of last I,P,S Frame
447 int64_t time; ///< time of current frame
448 int64_t last_non_b_time;
449 uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
450 uint16_t pb_time; ///< time distance between the last b and p,s,i frame
451 uint16_t pp_field_time;
452 uint16_t pb_field_time; ///< like above, just for interlaced
454 int vol_sprite_usage;
459 int sprite_brightness_change;
460 int num_sprite_warping_points;
461 int real_sprite_warping_points;
462 int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
463 int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
464 int sprite_shift[2]; ///< sprite shift [isChroma]
467 int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
470 int enhancement_type;
473 int aspect_ratio_info;
476 int sprite_warping_accuracy;
477 int low_latency_sprite;
478 int data_partitioning; ///< data partitioning flag from header
479 int partitioned_frame; ///< is current frame partitioned
480 int rvlc; ///< reversible vlc
481 int resync_marker; ///< could this stream contain resync markers
482 int low_delay; ///< no reordering needed / has no b-frames
484 int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
485 PutBitContext tex_pb; ///< used for data partitioned VOPs
486 PutBitContext pb2; ///< used for data partitioned VOPs
487 #define PB_BUFFER_SIZE 1024*256
488 uint8_t *tex_pb_buffer;
491 #define CO_LOCATED_TYPE_4MV 1
492 #define CO_LOCATED_TYPE_FIELDMV 2
493 int8_t *co_located_type_table; ///< 4mv & field_mv info for next b frame
494 int16_t (*field_mv_table)[2][2]; ///< used for interlaced b frame decoding
495 int8_t (*field_select_table)[2]; ///< wtf, no really another table for interlaced b frames
496 int t_frame; ///< time distance of first I -> B, used for interlaced b frames
497 int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
499 /* divx specific, used to workaround (many) bugs in divx5 */
503 #define BITSTREAM_BUFFER_SIZE 1024*256
504 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
505 int bitstream_buffer_size;
509 /* lavc specific stuff, used to workaround bugs in libavcodec */
514 int rv10_version; ///< RV10 version: 0 or 3
515 int rv10_first_dc_coded[3];
518 struct MJpegContext *mjpeg_ctx;
519 int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
520 int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
521 int mjpeg_write_tables; ///< do we want to have quantisation- and huffmantables in the jpeg file ?
522 int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers
524 /* MSMPEG4 specific */
527 int rl_chroma_table_index;
529 int use_skip_mb_code;
530 int slice_height; ///< in macroblocks
531 int first_slice_line; ///< used in mpeg4 too to handle resync markers
532 int flipflop_rounding;
533 int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
535 int esc3_level_length;
537 /** [mb_intra][isChroma][level][run][last] */
538 int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
539 int inter_intra_pred;
542 /* decompression specific */
546 int fake_picture_number; ///< picture number at the bitstream frame rate
547 int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
548 int last_mv_dir; ///< last mv_dir, used for b frame encoding
550 /* MPEG2 specific - I wish I had not to support this mess. */
551 int progressive_sequence;
552 int mpeg_f_code[2][2];
553 int picture_structure;
555 #define PICT_TOP_FIELD 1
556 #define PICT_BOTTOM_FIELD 2
559 int intra_dc_precision;
560 int frame_pred_frame_dct;
562 int concealment_motion_vectors;
564 int intra_vlc_format;
566 int repeat_first_field;
568 int progressive_frame;
576 /* These are explained on avcodec.h */
578 int rtp_payload_size;
579 void (*rtp_callback)(void *data, int size, int packet_number);
580 uint8_t *ptr_lastgob;
581 uint8_t *ptr_last_mb_line;
582 uint32_t mb_line_avgsize;
584 DCTELEM (*block)[64]; ///< points to one of the following blocks
585 DCTELEM blocks[2][6][64] __align8; // for HQ mode we need to keep the best block
586 int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
588 #define SLICE_ERROR -1
589 #define SLICE_END -2 //end marker found
590 #define SLICE_NOEND -3 //no end marker or error found but mb count exceeded
592 void (*dct_unquantize_mpeg1)(struct MpegEncContext *s,
593 DCTELEM *block/*align 16*/, int n, int qscale);
594 void (*dct_unquantize_mpeg2)(struct MpegEncContext *s,
595 DCTELEM *block/*align 16*/, int n, int qscale);
596 void (*dct_unquantize_h263)(struct MpegEncContext *s,
597 DCTELEM *block/*align 16*/, int n, int qscale);
598 void (*dct_unquantize)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
599 DCTELEM *block/*align 16*/, int n, int qscale);
600 int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
601 int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
605 int DCT_common_init(MpegEncContext *s);
606 int MPV_common_init(MpegEncContext *s);
607 void MPV_common_end(MpegEncContext *s);
608 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[6][64]);
609 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
610 void MPV_frame_end(MpegEncContext *s);
611 int MPV_encode_init(AVCodecContext *avctx);
612 int MPV_encode_end(AVCodecContext *avctx);
613 int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
615 void MPV_common_init_mmx(MpegEncContext *s);
618 void MPV_common_init_axp(MpegEncContext *s);
621 void MPV_common_init_mlib(MpegEncContext *s);
624 void MPV_common_init_mmi(MpegEncContext *s);
627 void MPV_common_init_armv4l(MpegEncContext *s);
630 void MPV_common_init_ppc(MpegEncContext *s);
632 extern void (*draw_edges)(uint8_t *buf, int wrap, int width, int height, int w);
633 void ff_copy_bits(PutBitContext *pb, uint8_t *src, int length);
634 void ff_clean_intra_table_entries(MpegEncContext *s);
635 void ff_init_scantable(MpegEncContext *s, ScanTable *st, const uint8_t *src_scantable);
636 void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
637 void ff_emulated_edge_mc(MpegEncContext *s, uint8_t *src, int linesize, int block_w, int block_h,
638 int src_x, int src_y, int w, int h);
639 char ff_get_pict_type_char(int pict_type);
640 int ff_combine_frame( MpegEncContext *s, int next, uint8_t **buf, int *buf_size);
642 void ff_er_frame_start(MpegEncContext *s);
643 void ff_er_frame_end(MpegEncContext *s);
644 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
647 extern enum PixelFormat ff_yuv420p_list[2];
649 static inline void ff_init_block_index(MpegEncContext *s){
650 s->block_index[0]= s->block_wrap[0]*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
651 s->block_index[1]= s->block_wrap[0]*(s->mb_y*2 + 1) + s->mb_x*2;
652 s->block_index[2]= s->block_wrap[0]*(s->mb_y*2 + 2) - 1 + s->mb_x*2;
653 s->block_index[3]= s->block_wrap[0]*(s->mb_y*2 + 2) + s->mb_x*2;
654 s->block_index[4]= s->block_wrap[4]*(s->mb_y + 1) + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
655 s->block_index[5]= s->block_wrap[4]*(s->mb_y + 1 + s->mb_height + 2) + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
658 static inline void ff_update_block_index(MpegEncContext *s){
659 s->block_index[0]+=2;
660 s->block_index[1]+=2;
661 s->block_index[2]+=2;
662 s->block_index[3]+=2;
669 void ff_estimate_p_frame_motion(MpegEncContext * s,
671 void ff_estimate_b_frame_motion(MpegEncContext * s,
673 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
674 void ff_fix_long_p_mvs(MpegEncContext * s);
675 void ff_fix_long_b_mvs(MpegEncContext * s, int16_t (*mv_table)[2], int f_code, int type);
676 void ff_init_me(MpegEncContext *s);
677 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
681 extern const int16_t ff_mpeg1_default_intra_matrix[64];
682 extern const int16_t ff_mpeg1_default_non_intra_matrix[64];
683 extern uint8_t ff_mpeg1_dc_scale_table[128];
685 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
686 void mpeg1_encode_mb(MpegEncContext *s,
687 DCTELEM block[6][64],
688 int motion_x, int motion_y);
689 void ff_mpeg1_encode_init(MpegEncContext *s);
693 typedef struct RLTable {
694 int n; ///< number of entries of table_vlc minus 1
695 int last; ///< number of values for last = 0
696 const uint16_t (*table_vlc)[2];
697 const int8_t *table_run;
698 const int8_t *table_level;
699 uint8_t *index_run[2]; ///< encoding only
700 int8_t *max_level[2]; ///< encoding & decoding
701 int8_t *max_run[2]; ///< encoding & decoding
702 VLC vlc; ///< decoding only deprected FIXME remove
703 RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
706 void init_rl(RLTable *rl);
707 void init_vlc_rl(RLTable *rl);
709 static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
712 index = rl->index_run[last][run];
715 if (level > rl->max_level[last][run])
717 return index + level - 1;
720 extern uint8_t ff_mpeg4_y_dc_scale_table[32];
721 extern uint8_t ff_mpeg4_c_dc_scale_table[32];
722 extern const int16_t ff_mpeg4_default_intra_matrix[64];
723 extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
724 int ff_h263_decode_init(AVCodecContext *avctx);
725 int ff_h263_decode_frame(AVCodecContext *avctx,
726 void *data, int *data_size,
727 uint8_t *buf, int buf_size);
728 int ff_h263_decode_end(AVCodecContext *avctx);
729 void h263_encode_mb(MpegEncContext *s,
730 DCTELEM block[6][64],
731 int motion_x, int motion_y);
732 void mpeg4_encode_mb(MpegEncContext *s,
733 DCTELEM block[6][64],
734 int motion_x, int motion_y);
735 void h263_encode_picture_header(MpegEncContext *s, int picture_number);
736 int h263_encode_gob_header(MpegEncContext * s, int mb_line);
737 int16_t *h263_pred_motion(MpegEncContext * s, int block,
739 void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
741 void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
742 void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
743 void h263_encode_init(MpegEncContext *s);
744 void h263_decode_init_vlc(MpegEncContext *s);
745 int h263_decode_picture_header(MpegEncContext *s);
746 int ff_h263_decode_gob_header(MpegEncContext *s);
747 int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
750 int intel_h263_decode_picture_header(MpegEncContext *s);
751 int ff_h263_decode_mb(MpegEncContext *s,
752 DCTELEM block[6][64]);
753 int h263_get_picture_format(int width, int height);
754 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
755 void ff_mpeg4_clean_buffers(MpegEncContext *s);
756 void ff_mpeg4_stuffing(PutBitContext * pbc);
757 void ff_mpeg4_init_partitions(MpegEncContext *s);
758 void ff_mpeg4_merge_partitions(MpegEncContext *s);
759 void ff_clean_mpeg4_qscales(MpegEncContext *s);
760 void ff_clean_h263_qscales(MpegEncContext *s);
761 int ff_mpeg4_decode_partitions(MpegEncContext *s);
762 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
763 int ff_h263_resync(MpegEncContext *s);
764 int ff_h263_get_gob_height(MpegEncContext *s);
765 void ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
766 inline int ff_h263_round_chroma(int x);
770 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
771 int rv_decode_dc(MpegEncContext *s, int n);
775 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
776 void msmpeg4_encode_ext_header(MpegEncContext * s);
777 void msmpeg4_encode_mb(MpegEncContext * s,
778 DCTELEM block[6][64],
779 int motion_x, int motion_y);
780 int msmpeg4_decode_picture_header(MpegEncContext * s);
781 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
782 int ff_msmpeg4_decode_init(MpegEncContext *s);
783 void ff_msmpeg4_encode_init(MpegEncContext *s);
784 int ff_wmv2_decode_picture_header(MpegEncContext * s);
785 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
786 void ff_mspel_motion(MpegEncContext *s,
787 uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
788 uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
789 int motion_x, int motion_y, int h);
790 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
791 void ff_wmv2_encode_mb(MpegEncContext * s,
792 DCTELEM block[6][64],
793 int motion_x, int motion_y);
796 int mjpeg_init(MpegEncContext *s);
797 void mjpeg_close(MpegEncContext *s);
798 void mjpeg_encode_mb(MpegEncContext *s,
799 DCTELEM block[6][64]);
800 void mjpeg_picture_header(MpegEncContext *s);
801 void mjpeg_picture_trailer(MpegEncContext *s);
805 int ff_rate_control_init(MpegEncContext *s);
806 float ff_rate_estimate_qscale(MpegEncContext *s);
807 void ff_write_pass1_stats(MpegEncContext *s);
808 void ff_rate_control_uninit(MpegEncContext *s);
809 double ff_eval(char *s, double *const_value, const char **const_name,
810 double (**func1)(void *, double), const char **func1_name,
811 double (**func2)(void *, double, double), char **func2_name,
815 #endif /* AVCODEC_MPEGVIDEO_H */