mpegvideo.h@ 7692

Last change on this file since 7692 was 5776, checked in by vboxsync, 17 years ago
ffmpeg: exported to OSE
File size: 41.3 KB

Line
1	/*
2	* Generic DCT based hybrid video encoder
3	* Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
4	* Copyright (c) 2002-2004 Michael Niedermayer
5	*
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.
10	*
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.
15	*
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
19	*/
20
21	/**
22	* @file mpegvideo.h
23	* mpegvideo header.
24	*/
25
26	#ifndef AVCODEC_MPEGVIDEO_H
27	#define AVCODEC_MPEGVIDEO_H
28
29	#include "dsputil.h"
30	#include "bitstream.h"
31
32	#define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
33
34	enum OutputFormat {
35	FMT_MPEG1,
36	FMT_H261,
37	FMT_H263,
38	FMT_MJPEG,
39	FMT_H264,
40	};
41
42	#define EDGE_WIDTH 16
43
44	#define MPEG_BUF_SIZE (16 * 1024)
45
46	#define QMAT_SHIFT_MMX 16
47	#define QMAT_SHIFT 22
48
49	#define MAX_FCODE 7
50	#define MAX_MV 2048
51
52	#define MAX_THREADS 8
53
54	#define MAX_PICTURE_COUNT 32
55
56	#define ME_MAP_SIZE 64
57	#define ME_MAP_SHIFT 3
58	#define ME_MAP_MV_BITS 11
59
60	/* run length table */
61	#define MAX_RUN 64
62	#define MAX_LEVEL 64
63
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
70
71	#define MAX_MB_BYTES (301616*3/8 + 120)
72
73	#define INPLACE_OFFSET 16
74
75	typedef struct Predictor{
76	double coeff;
77	double count;
78	double decay;
79	} Predictor;
80
81	typedef struct RateControlEntry{
82	int pict_type;
83	float qscale;
84	int mv_bits;
85	int i_tex_bits;
86	int p_tex_bits;
87	int misc_bits;
88	int header_bits;
89	uint64_t expected_bits;
90	int new_pict_type;
91	float new_qscale;
92	int mc_mb_var_sum;
93	int mb_var_sum;
94	int i_count;
95	int skip_count;
96	int f_code;
97	int b_code;
98	}RateControlEntry;
99
100	/**
101	* rate control context.
102	*/
103	typedef struct RateControlContext{
104	FILE *stats_file;
105	int num_entries; ///< number of RateControlEntries
106	RateControlEntry *entry;
107	double buffer_index; ///< amount of bits in the video/audio buffer
108	Predictor pred[5];
109	double short_term_qsum; ///< sum of recent qscales
110	double short_term_qcount; ///< count of recent qscales
111	double pass1_rc_eq_output_sum;///< sum of the output of the rc equation, this is used for normalization
112	double pass1_wanted_bits; ///< bits which should have been outputed by the pass1 code (including complexity init)
113	double last_qscale;
114	double last_qscale_for[5]; ///< last qscale for a specific pict type, used for max_diff & ipb factor stuff
115	int last_mc_mb_var_sum;
116	int last_mb_var_sum;
117	uint64_t i_cplx_sum[5];
118	uint64_t p_cplx_sum[5];
119	uint64_t mv_bits_sum[5];
120	uint64_t qscale_sum[5];
121	int frame_count[5];
122	int last_non_b_pict_type;
123
124	void *non_lavc_opaque; ///< context for non lavc rc code (for example xvid)
125	float dry_run_qscale; ///< for xvid rc
126	int last_picture_number; ///< for xvid rc
127	}RateControlContext;
128
129	/**
130	* Scantable.
131	*/
132	typedef struct ScanTable{
133	const uint8_t *scantable;
134	uint8_t permutated[64];
135	uint8_t raster_end[64];
136	#ifdef ARCH_POWERPC
137	/** Used by dct_quantise_alitvec to find last-non-zero */
138	DECLARE_ALIGNED_8(uint8_t, inverse[64]);
139	#endif
140	} ScanTable;
141
142	/**
143	* Picture.
144	*/
145	typedef struct Picture{
146	FF_COMMON_FRAME
147
148	/**
149	* halfpel luma planes.
150	*/
151	uint8_t *interpolated[3];
152	int16_t (*motion_val_base[2])[2];
153	uint32_t *mb_type_base;
154	#define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if theres just one type
155	#define IS_INTRA4x4(a) ((a)&MB_TYPE_INTRA4x4)
156	#define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
157	#define IS_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
158	#define IS_INTRA(a) ((a)&7)
159	#define IS_INTER(a) ((a)&(MB_TYPE_16x16\|MB_TYPE_16x8\|MB_TYPE_8x16\|MB_TYPE_8x8))
160	#define IS_SKIP(a) ((a)&MB_TYPE_SKIP)
161	#define IS_INTRA_PCM(a) ((a)&MB_TYPE_INTRA_PCM)
162	#define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
163	#define IS_DIRECT(a) ((a)&MB_TYPE_DIRECT2)
164	#define IS_GMC(a) ((a)&MB_TYPE_GMC)
165	#define IS_16X16(a) ((a)&MB_TYPE_16x16)
166	#define IS_16X8(a) ((a)&MB_TYPE_16x8)
167	#define IS_8X16(a) ((a)&MB_TYPE_8x16)
168	#define IS_8X8(a) ((a)&MB_TYPE_8x8)
169	#define IS_SUB_8X8(a) ((a)&MB_TYPE_16x16) //note reused
170	#define IS_SUB_8X4(a) ((a)&MB_TYPE_16x8) //note reused
171	#define IS_SUB_4X8(a) ((a)&MB_TYPE_8x16) //note reused
172	#define IS_SUB_4X4(a) ((a)&MB_TYPE_8x8) //note reused
173	#define IS_ACPRED(a) ((a)&MB_TYPE_ACPRED)
174	#define IS_QUANT(a) ((a)&MB_TYPE_QUANT)
175	#define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
176	#define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0\|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note doesnt work if subMBs
177	#define HAS_CBP(a) ((a)&MB_TYPE_CBP)
178
179	int field_poc[2]; ///< h264 top/bottom POC
180	int poc; ///< h264 frame POC
181	int frame_num; ///< h264 frame_num
182	int pic_id; ///< h264 pic_num or long_term_pic_idx
183	int long_ref; ///< 1->long term reference 0->short term reference
184	int ref_poc[2][16]; ///< h264 POCs of the frames used as reference
185	int ref_count[2]; ///< number of entries in ref_poc
186
187	int mb_var_sum; ///< sum of MB variance for current frame
188	int mc_mb_var_sum; ///< motion compensated MB variance for current frame
189	uint16_t *mb_var; ///< Table for MB variances
190	uint16_t *mc_mb_var; ///< Table for motion compensated MB variances
191	uint8_t *mb_mean; ///< Table for MB luminance
192	int32_t *mb_cmp_score; ///< Table for MB cmp scores, for mb decision FIXME remove
193	int b_frame_score; /* */
194	} Picture;
195
196	typedef struct ParseContext{
197	uint8_t *buffer;
198	int index;
199	int last_index;
200	unsigned int buffer_size;
201	uint32_t state; ///< contains the last few bytes in MSB order
202	int frame_start_found;
203	int overread; ///< the number of bytes which where irreversibly read from the next frame
204	int overread_index; ///< the index into ParseContext.buffer of the overreaded bytes
205	} ParseContext;
206
207	struct MpegEncContext;
208
209	/**
210	* Motion estimation context.
211	*/
212	typedef struct MotionEstContext{
213	AVCodecContext *avctx;
214	int skip; ///< set if ME is skipped for the current MB
215	int co_located_mv[4][2]; ///< mv from last p frame for direct mode ME
216	int direct_basis_mv[4][2];
217	uint8_t *scratchpad; ///< data area for the me algo, so that the ME doesnt need to malloc/free
218	uint8_t *best_mb;
219	uint8_t *temp_mb[2];
220	uint8_t *temp;
221	int best_bits;
222	uint32_t *map; ///< map to avoid duplicate evaluations
223	uint32_t *score_map; ///< map to store the scores
224	int map_generation;
225	int pre_penalty_factor;
226	int penalty_factor;
227	int sub_penalty_factor;
228	int mb_penalty_factor;
229	int flags;
230	int sub_flags;
231	int mb_flags;
232	int pre_pass; ///< = 1 for the pre pass
233	int dia_size;
234	int xmin;
235	int xmax;
236	int ymin;
237	int ymax;
238	int pred_x;
239	int pred_y;
240	uint8_t *src[4][4];
241	uint8_t *ref[4][4];
242	int stride;
243	int uvstride;
244	/* temp variables for picture complexity calculation */
245	int mc_mb_var_sum_temp;
246	int mb_var_sum_temp;
247	int scene_change_score;
248	/* cmp, chroma_cmp;*/
249	op_pixels_func (*hpel_put)[4];
250	op_pixels_func (*hpel_avg)[4];
251	qpel_mc_func (*qpel_put)[16];
252	qpel_mc_func (*qpel_avg)[16];
253	uint8_t (mv_penalty)[MAX_MV2+1]; ///< amount of bits needed to encode a MV
254	uint8_t *current_mv_penalty;
255	int (sub_motion_search)(struct MpegEncContext s,
256	int mx_ptr, int my_ptr, int dmin,
257	int src_index, int ref_index,
258	int size, int h);
259	}MotionEstContext;
260
261	/**
262	* MpegEncContext.
263	*/
264	typedef struct MpegEncContext {
265	struct AVCodecContext *avctx;
266	/* the following parameters must be initialized before encoding */
267	int width, height;///< picture size. must be a multiple of 16
268	int gop_size;
269	int intra_only; ///< if true, only intra pictures are generated
270	int bit_rate; ///< wanted bit rate
271	enum OutputFormat out_format; ///< output format
272	int h263_pred; ///< use mpeg4/h263 ac/dc predictions
273
274	/* the following codec id fields are deprecated in favor of codec_id */
275	int h263_plus; ///< h263 plus headers
276	int h263_msmpeg4; ///< generate MSMPEG4 compatible stream (deprecated, use msmpeg4_version instead)
277	int h263_flv; ///< use flv h263 header
278
279	enum CodecID codec_id; /* see CODEC_ID_xxx */
280	int fixed_qscale; ///< fixed qscale if non zero
281	int encoding; ///< true if we are encoding (vs decoding)
282	int flags; ///< AVCodecContext.flags (HQ, MV4, ...)
283	int flags2; ///< AVCodecContext.flags2
284	int max_b_frames; ///< max number of b-frames for encoding
285	int luma_elim_threshold;
286	int chroma_elim_threshold;
287	int strict_std_compliance; ///< strictly follow the std (MPEG4, ...)
288	int workaround_bugs; ///< workaround bugs in encoders which cannot be detected automatically
289	/* the following fields are managed internally by the encoder */
290
291	/** bit output */
292	PutBitContext pb;
293
294	/* sequence parameters */
295	int context_initialized;
296	int input_picture_number; ///< used to set pic->display_picture_number, shouldnt be used for/by anything else
297	int coded_picture_number; ///< used to set pic->coded_picture_number, shouldnt be used for/by anything else
298	int picture_number; //FIXME remove, unclear definition
299	int picture_in_gop_number; ///< 0-> first pic in gop, ...
300	int b_frames_since_non_b; ///< used for encoding, relative to not yet reordered input
301	int64_t user_specified_pts;///< last non zero pts from AVFrame which was passed into avcodec_encode_video()
302	int mb_width, mb_height; ///< number of MBs horizontally & vertically
303	int mb_stride; ///< mb_width+1 used for some arrays to allow simple addressing of left & top MBs without sig11
304	int b8_stride; ///< 2*mb_width+1 used for some 8x8 block arrays to allow simple addressing
305	int b4_stride; ///< 4*mb_width+1 used for some 4x4 block arrays to allow simple addressing
306	int h_edge_pos, v_edge_pos;///< horizontal / vertical position of the right/bottom edge (pixel replication)
307	int mb_num; ///< number of MBs of a picture
308	int linesize; ///< line size, in bytes, may be different from width
309	int uvlinesize; ///< line size, for chroma in bytes, may be different from width
310	Picture *picture; ///< main picture buffer
311	Picture **input_picture; ///< next pictures on display order for encoding
312	Picture **reordered_input_picture; ///< pointer to the next pictures in codedorder for encoding
313
314	int start_mb_y; ///< start mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
315	int end_mb_y; ///< end mb_y of this thread (so current thread should process start_mb_y <= row < end_mb_y)
316	struct MpegEncContext *thread_context[MAX_THREADS];
317
318	/**
319	* copy of the previous picture structure.
320	* note, linesize & data, might not match the previous picture (for field pictures)
321	*/
322	Picture last_picture;
323
324	/**
325	* copy of the next picture structure.
326	* note, linesize & data, might not match the next picture (for field pictures)
327	*/
328	Picture next_picture;
329
330	/**
331	* copy of the source picture structure for encoding.
332	* note, linesize & data, might not match the source picture (for field pictures)
333	*/
334	Picture new_picture;
335
336	/**
337	* copy of the current picture structure.
338	* note, linesize & data, might not match the current picture (for field pictures)
339	*/
340	Picture current_picture; ///< buffer to store the decompressed current picture
341
342	Picture *last_picture_ptr; ///< pointer to the previous picture.
343	Picture *next_picture_ptr; ///< pointer to the next picture (for bidir pred)
344	Picture *current_picture_ptr; ///< pointer to the current picture
345	uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
346	int last_dc[3]; ///< last DC values for MPEG1
347	int16_t *dc_val_base;
348	int16_t *dc_val[3]; ///< used for mpeg4 DC prediction, all 3 arrays must be continuous
349	int16_t dc_cache[4*5];
350	int y_dc_scale, c_dc_scale;
351	const uint8_t *y_dc_scale_table; ///< qscale -> y_dc_scale table
352	const uint8_t *c_dc_scale_table; ///< qscale -> c_dc_scale table
353	const uint8_t *chroma_qscale_table; ///< qscale -> chroma_qscale (h263)
354	uint8_t *coded_block_base;
355	uint8_t *coded_block; ///< used for coded block pattern prediction (msmpeg4v3, wmv1)
356	int16_t (*ac_val_base)[16];
357	int16_t (*ac_val[3])[16]; ///< used for for mpeg4 AC prediction, all 3 arrays must be continuous
358	int ac_pred;
359	uint8_t *prev_pict_types; ///< previous picture types in bitstream order, used for mb skip
360	#define PREV_PICT_TYPES_BUFFER_SIZE 256
361	int mb_skipped; ///< MUST BE SET only during DECODING
362	uint8_t mbskip_table; /*< used to avoid copy if macroblock skipped (for black regions for example)
363	and used for b-frame encoding & decoding (contains skip table of next P Frame) */
364	uint8_t *mbintra_table; ///< used to avoid setting {ac, dc, cbp}-pred stuff to zero on inter MB decoding
365	uint8_t *cbp_table; ///< used to store cbp, ac_pred for partitioned decoding
366	uint8_t *pred_dir_table; ///< used to store pred_dir for partitioned decoding
367	uint8_t *allocated_edge_emu_buffer;
368	uint8_t *edge_emu_buffer; ///< points into the middle of allocated_edge_emu_buffer
369	uint8_t *rd_scratchpad; ///< scratchpad for rate distortion mb decision
370	uint8_t *obmc_scratchpad;
371	uint8_t *b_scratchpad; ///< scratchpad used for writing into write only buffers
372
373	int qscale; ///< QP
374	int chroma_qscale; ///< chroma QP
375	int lambda; ///< lagrange multipler used in rate distortion
376	int lambda2; ///< (lambda*lambda) >> FF_LAMBDA_SHIFT
377	int *lambda_table;
378	int adaptive_quant; ///< use adaptive quantization
379	int dquant; ///< qscale difference to prev qscale
380	int pict_type; ///< I_TYPE, P_TYPE, B_TYPE, ...
381	int last_pict_type; //FIXME removes
382	int last_non_b_pict_type; ///< used for mpeg4 gmc b-frames & ratecontrol
383	int dropable;
384	int frame_rate_index;
385	int last_lambda_for[5]; ///< last lambda for a specific pict type
386
387	/* motion compensation */
388	int unrestricted_mv; ///< mv can point outside of the coded picture
389	int h263_long_vectors; ///< use horrible h263v1 long vector mode
390	int decode; ///< if 0 then decoding will be skipped (for encoding b frames for example)
391
392	DSPContext dsp; ///< pointers for accelerated dsp functions
393	int f_code; ///< forward MV resolution
394	int b_code; ///< backward MV resolution for B Frames (mpeg4)
395	int16_t (*p_mv_table_base)[2];
396	int16_t (*b_forw_mv_table_base)[2];
397	int16_t (*b_back_mv_table_base)[2];
398	int16_t (*b_bidir_forw_mv_table_base)[2];
399	int16_t (*b_bidir_back_mv_table_base)[2];
400	int16_t (*b_direct_mv_table_base)[2];
401	int16_t (*p_field_mv_table_base[2][2])[2];
402	int16_t (*b_field_mv_table_base[2][2][2])[2];
403	int16_t (*p_mv_table)[2]; ///< MV table (1MV per MB) p-frame encoding
404	int16_t (*b_forw_mv_table)[2]; ///< MV table (1MV per MB) forward mode b-frame encoding
405	int16_t (*b_back_mv_table)[2]; ///< MV table (1MV per MB) backward mode b-frame encoding
406	int16_t (*b_bidir_forw_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
407	int16_t (*b_bidir_back_mv_table)[2]; ///< MV table (1MV per MB) bidir mode b-frame encoding
408	int16_t (*b_direct_mv_table)[2]; ///< MV table (1MV per MB) direct mode b-frame encoding
409	int16_t (*p_field_mv_table[2][2])[2]; ///< MV table (2MV per MB) interlaced p-frame encoding
410	int16_t (*b_field_mv_table[2][2][2])[2];///< MV table (4MV per MB) interlaced b-frame encoding
411	uint8_t (*p_field_select_table[2]);
412	uint8_t (*b_field_select_table[2][2]);
413	int me_method; ///< ME algorithm
414	int mv_dir;
415	#define MV_DIR_BACKWARD 1
416	#define MV_DIR_FORWARD 2
417	#define MV_DIRECT 4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
418	int mv_type;
419	#define MV_TYPE_16X16 0 ///< 1 vector for the whole mb
420	#define MV_TYPE_8X8 1 ///< 4 vectors (h263, mpeg4 4MV)
421	#define MV_TYPE_16X8 2 ///< 2 vectors, one per 16x8 block
422	#define MV_TYPE_FIELD 3 ///< 2 vectors, one per field
423	#define MV_TYPE_DMV 4 ///< 2 vectors, special mpeg2 Dual Prime Vectors
424	/**motion vectors for a macroblock
425	first coordinate : 0 = forward 1 = backward
426	second " : depend on type
427	third " : 0 = x, 1 = y
428	*/
429	int mv[2][4][2];
430	int field_select[2][2];
431	int last_mv[2][2][2]; ///< last MV, used for MV prediction in MPEG1 & B-frame MPEG4
432	uint8_t *fcode_tab; ///< smallest fcode needed for each MV
433	int16_t direct_scale_mv[2][64]; ///< precomputed to avoid divisions in ff_mpeg4_set_direct_mv
434
435	MotionEstContext me;
436
437	int no_rounding; /**< apply no rounding to motion compensation (MPEG4, msmpeg4, ...)
438	for b-frames rounding mode is allways 0 */
439
440	int hurry_up; /**< when set to 1 during decoding, b frames will be skipped
441	when set to 2 idct/dequant will be skipped too */
442
443	/* macroblock layer */
444	int mb_x, mb_y;
445	int mb_skip_run;
446	int mb_intra;
447	uint16_t *mb_type; ///< Table for candidate MB types for encoding
448	#define CANDIDATE_MB_TYPE_INTRA 0x01
449	#define CANDIDATE_MB_TYPE_INTER 0x02
450	#define CANDIDATE_MB_TYPE_INTER4V 0x04
451	#define CANDIDATE_MB_TYPE_SKIPPED 0x08
452	//#define MB_TYPE_GMC 0x10
453
454	#define CANDIDATE_MB_TYPE_DIRECT 0x10
455	#define CANDIDATE_MB_TYPE_FORWARD 0x20
456	#define CANDIDATE_MB_TYPE_BACKWARD 0x40
457	#define CANDIDATE_MB_TYPE_BIDIR 0x80
458
459	#define CANDIDATE_MB_TYPE_INTER_I 0x100
460	#define CANDIDATE_MB_TYPE_FORWARD_I 0x200
461	#define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
462	#define CANDIDATE_MB_TYPE_BIDIR_I 0x800
463
464	int block_index[6]; ///< index to current MB in block based arrays with edges
465	int block_wrap[6];
466	uint8_t *dest[3];
467
468	int mb_index2xy; ///< mb_index -> mb_x + mb_ymb_stride
469
470	/** matrix transmitted in the bitstream */
471	uint16_t intra_matrix[64];
472	uint16_t chroma_intra_matrix[64];
473	uint16_t inter_matrix[64];
474	uint16_t chroma_inter_matrix[64];
475	#define QUANT_BIAS_SHIFT 8
476	int intra_quant_bias; ///< bias for the quantizer
477	int inter_quant_bias; ///< bias for the quantizer
478	int min_qcoeff; ///< minimum encodable coefficient
479	int max_qcoeff; ///< maximum encodable coefficient
480	int ac_esc_length; ///< num of bits needed to encode the longest esc
481	uint8_t *intra_ac_vlc_length;
482	uint8_t *intra_ac_vlc_last_length;
483	uint8_t *inter_ac_vlc_length;
484	uint8_t *inter_ac_vlc_last_length;
485	uint8_t *luma_dc_vlc_length;
486	uint8_t *chroma_dc_vlc_length;
487	#define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
488
489	int coded_score[8];
490
491	/** precomputed matrix (combine qscale and DCT renorm) */
492	int (*q_intra_matrix)[64];
493	int (*q_inter_matrix)[64];
494	/** identical to the above but for MMX & these are not permutated, second 64 entries are bias*/
495	uint16_t (*q_intra_matrix16)[2][64];
496	uint16_t (*q_inter_matrix16)[2][64];
497	int block_last_index[12]; ///< last non zero coefficient in block
498	/* scantables */
499	DECLARE_ALIGNED_8(ScanTable, intra_scantable);
500	ScanTable intra_h_scantable;
501	ScanTable intra_v_scantable;
502	ScanTable inter_scantable; ///< if inter == intra then intra should be used to reduce tha cache usage
503
504	/* noise reduction */
505	int (*dct_error_sum)[64];
506	int dct_count[2];
507	uint16_t (*dct_offset)[64];
508
509	void *opaque; ///< private data for the user
510
511	/* bit rate control */
512	int64_t wanted_bits;
513	int64_t total_bits;
514	int frame_bits; ///< bits used for the current frame
515	RateControlContext rc_context; ///< contains stuff only accessed in ratecontrol.c
516
517	/* statistics, used for 2-pass encoding */
518	int mv_bits;
519	int header_bits;
520	int i_tex_bits;
521	int p_tex_bits;
522	int i_count;
523	int f_count;
524	int b_count;
525	int skip_count;
526	int misc_bits; ///< cbp, mb_type
527	int last_bits; ///< temp var used for calculating the above vars
528
529	/* error concealment / resync */
530	int error_count;
531	uint8_t *error_status_table; ///< table of the error status of each MB
532	#define VP_START 1 ///< current MB is the first after a resync marker
533	#define AC_ERROR 2
534	#define DC_ERROR 4
535	#define MV_ERROR 8
536	#define AC_END 16
537	#define DC_END 32
538	#define MV_END 64
539	//FIXME some prefix?
540
541	int resync_mb_x; ///< x position of last resync marker
542	int resync_mb_y; ///< y position of last resync marker
543	GetBitContext last_resync_gb; ///< used to search for the next resync marker
544	int mb_num_left; ///< number of MBs left in this video packet (for partitioned Slices only)
545	int next_p_frame_damaged; ///< set if the next p frame is damaged, to avoid showing trashed b frames
546	int error_resilience;
547
548	ParseContext parse_context;
549
550	/* H.263 specific */
551	int gob_index;
552	int obmc; ///< overlapped block motion compensation
553
554	/* H.263+ specific */
555	int umvplus; ///< == H263+ && unrestricted_mv
556	int h263_aic; ///< Advanded INTRA Coding (AIC)
557	int h263_aic_dir; ///< AIC direction: 0 = left, 1 = top
558	int h263_slice_structured;
559	int alt_inter_vlc; ///< alternative inter vlc
560	int modified_quant;
561	int loop_filter;
562	int custom_pcf;
563
564	/* mpeg4 specific */
565	int time_increment_bits; ///< number of bits to represent the fractional part of time
566	int last_time_base;
567	int time_base; ///< time in seconds of last I,P,S Frame
568	int64_t time; ///< time of current frame
569	int64_t last_non_b_time;
570	uint16_t pp_time; ///< time distance between the last 2 p,s,i frames
571	uint16_t pb_time; ///< time distance between the last b and p,s,i frame
572	uint16_t pp_field_time;
573	uint16_t pb_field_time; ///< like above, just for interlaced
574	int shape;
575	int vol_sprite_usage;
576	int sprite_width;
577	int sprite_height;
578	int sprite_left;
579	int sprite_top;
580	int sprite_brightness_change;
581	int num_sprite_warping_points;
582	int real_sprite_warping_points;
583	int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
584	int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
585	int sprite_shift[2]; ///< sprite shift [isChroma]
586	int mcsel;
587	int quant_precision;
588	int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
589	int scalability;
590	int hierachy_type;
591	int enhancement_type;
592	int new_pred;
593	int reduced_res_vop;
594	int aspect_ratio_info; //FIXME remove
595	int sprite_warping_accuracy;
596	int low_latency_sprite;
597	int data_partitioning; ///< data partitioning flag from header
598	int partitioned_frame; ///< is current frame partitioned
599	int rvlc; ///< reversible vlc
600	int resync_marker; ///< could this stream contain resync markers
601	int low_delay; ///< no reordering needed / has no b-frames
602	int vo_type;
603	int vol_control_parameters; ///< does the stream contain the low_delay flag, used to workaround buggy encoders
604	int intra_dc_threshold; ///< QP above whch the ac VLC should be used for intra dc
605	int use_intra_dc_vlc;
606	PutBitContext tex_pb; ///< used for data partitioned VOPs
607	PutBitContext pb2; ///< used for data partitioned VOPs
608	int mpeg_quant;
609	int t_frame; ///< time distance of first I -> B, used for interlaced b frames
610	int padding_bug_score; ///< used to detect the VERY common padding bug in MPEG4
611
612	/* divx specific, used to workaround (many) bugs in divx5 */
613	int divx_version;
614	int divx_build;
615	int divx_packed;
616	uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
617	int bitstream_buffer_size;
618	unsigned int allocated_bitstream_buffer_size;
619
620	int xvid_build;
621
622	/* lavc specific stuff, used to workaround bugs in libavcodec */
623	int lavc_build;
624
625	/* RV10 specific */
626	int rv10_version; ///< RV10 version: 0 or 3
627	int rv10_first_dc_coded[3];
628
629	/* MJPEG specific */
630	struct MJpegContext *mjpeg_ctx;
631	int mjpeg_vsample[3]; ///< vertical sampling factors, default = {2, 1, 1}
632	int mjpeg_hsample[3]; ///< horizontal sampling factors, default = {2, 1, 1}
633	int mjpeg_write_tables; ///< do we want to have quantisation- and huffmantables in the jpeg file ?
634	int mjpeg_data_only_frames; ///< frames only with SOI, SOS and EOI markers
635
636	/* MSMPEG4 specific */
637	int mv_table_index;
638	int rl_table_index;
639	int rl_chroma_table_index;
640	int dc_table_index;
641	int use_skip_mb_code;
642	int slice_height; ///< in macroblocks
643	int first_slice_line; ///< used in mpeg4 too to handle resync markers
644	int flipflop_rounding;
645	int msmpeg4_version; ///< 0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
646	int per_mb_rl_table;
647	int esc3_level_length;
648	int esc3_run_length;
649	/** [mb_intra][isChroma][level][run][last] */
650	int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
651	int inter_intra_pred;
652	int mspel;
653
654	/* decompression specific */
655	GetBitContext gb;
656
657	/* Mpeg1 specific */
658	int gop_picture_number; ///< index of the first picture of a GOP based on fake_pic_num & mpeg1 specific
659	int last_mv_dir; ///< last mv_dir, used for b frame encoding
660	int broken_link; ///< no_output_of_prior_pics_flag
661	uint8_t *vbv_delay_ptr; ///< pointer to vbv_delay in the bitstream
662
663	/* MPEG2 specific - I wish I had not to support this mess. */
664	int progressive_sequence;
665	int mpeg_f_code[2][2];
666	int picture_structure;
667	/* picture type */
668	#define PICT_TOP_FIELD 1
669	#define PICT_BOTTOM_FIELD 2
670	#define PICT_FRAME 3
671
672	int intra_dc_precision;
673	int frame_pred_frame_dct;
674	int top_field_first;
675	int concealment_motion_vectors;
676	int q_scale_type;
677	int intra_vlc_format;
678	int alternate_scan;
679	int repeat_first_field;
680	int chroma_420_type;
681	int chroma_format;
682	#define CHROMA_420 1
683	#define CHROMA_422 2
684	#define CHROMA_444 3
685	int chroma_x_shift;//depend on pix_format, that depend on chroma_format
686	int chroma_y_shift;
687
688	int progressive_frame;
689	int full_pel[2];
690	int interlaced_dct;
691	int first_slice;
692	int first_field; ///< is 1 for the first field of a field picture 0 otherwise
693
694	/* RTP specific */
695	int rtp_mode;
696
697	uint8_t *ptr_lastgob;
698	int swap_uv;//vcr2 codec is mpeg2 varint with UV swaped
699	short * pblocks[12];
700
701	DCTELEM (*block)[64]; ///< points to one of the following blocks
702	DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
703	int (decode_mb)(struct MpegEncContext s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
704	#define SLICE_OK 0
705	#define SLICE_ERROR -1
706	#define SLICE_END -2 ///<end marker found
707	#define SLICE_NOEND -3 ///<no end marker or error found but mb count exceeded
708
709	void (dct_unquantize_mpeg1_intra)(struct MpegEncContext s,
710	DCTELEM block/align 16*/, int n, int qscale);
711	void (dct_unquantize_mpeg1_inter)(struct MpegEncContext s,
712	DCTELEM block/align 16*/, int n, int qscale);
713	void (dct_unquantize_mpeg2_intra)(struct MpegEncContext s,
714	DCTELEM block/align 16*/, int n, int qscale);
715	void (dct_unquantize_mpeg2_inter)(struct MpegEncContext s,
716	DCTELEM block/align 16*/, int n, int qscale);
717	void (dct_unquantize_h263_intra)(struct MpegEncContext s,
718	DCTELEM block/align 16*/, int n, int qscale);
719	void (dct_unquantize_h263_inter)(struct MpegEncContext s,
720	DCTELEM block/align 16*/, int n, int qscale);
721	void (dct_unquantize_h261_intra)(struct MpegEncContext s,
722	DCTELEM block/align 16*/, int n, int qscale);
723	void (dct_unquantize_h261_inter)(struct MpegEncContext s,
724	DCTELEM block/align 16*/, int n, int qscale);
725	void (dct_unquantize_intra)(struct MpegEncContext s, // unquantizer to use (mpeg4 can use both)
726	DCTELEM block/align 16*/, int n, int qscale);
727	void (dct_unquantize_inter)(struct MpegEncContext s, // unquantizer to use (mpeg4 can use both)
728	DCTELEM block/align 16*/, int n, int qscale);
729	int (dct_quantize)(struct MpegEncContext s, DCTELEM block/align 16/, int n, int qscale, int overflow);
730	int (fast_dct_quantize)(struct MpegEncContext s, DCTELEM block/align 16/, int n, int qscale, int overflow);
731	void (denoise_dct)(struct MpegEncContext s, DCTELEM *block);
732	} MpegEncContext;
733
734
735	int DCT_common_init(MpegEncContext *s);
736	void MPV_decode_defaults(MpegEncContext *s);
737	int MPV_common_init(MpegEncContext *s);
738	void MPV_common_end(MpegEncContext *s);
739	void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
740	int MPV_frame_start(MpegEncContext s, AVCodecContext avctx);
741	void MPV_frame_end(MpegEncContext *s);
742	int MPV_encode_init(AVCodecContext *avctx);
743	int MPV_encode_end(AVCodecContext *avctx);
744	int MPV_encode_picture(AVCodecContext avctx, unsigned char buf, int buf_size, void *data);
745	#ifdef HAVE_MMX
746	void MPV_common_init_mmx(MpegEncContext *s);
747	#endif
748	#ifdef ARCH_ALPHA
749	void MPV_common_init_axp(MpegEncContext *s);
750	#endif
751	#ifdef HAVE_MLIB
752	void MPV_common_init_mlib(MpegEncContext *s);
753	#endif
754	#ifdef HAVE_MMI
755	void MPV_common_init_mmi(MpegEncContext *s);
756	#endif
757	#ifdef ARCH_ARMV4L
758	void MPV_common_init_armv4l(MpegEncContext *s);
759	#endif
760	#ifdef ARCH_POWERPC
761	void MPV_common_init_ppc(MpegEncContext *s);
762	#endif
763	extern void (draw_edges)(uint8_t buf, int wrap, int width, int height, int w);
764	void ff_copy_bits(PutBitContext pb, uint8_t src, int length);
765	void ff_clean_intra_table_entries(MpegEncContext *s);
766	void ff_init_scantable(uint8_t , ScanTable st, const uint8_t *src_scantable);
767	void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
768	void ff_emulated_edge_mc(uint8_t buf, uint8_t src, int linesize, int block_w, int block_h,
769	int src_x, int src_y, int w, int h);
770	#define END_NOT_FOUND -100
771	int ff_combine_frame(ParseContext pc, int next, uint8_t buf, int buf_size);
772	void ff_parse_close(AVCodecParserContext *s);
773	void ff_mpeg_flush(AVCodecContext *avctx);
774	void ff_print_debug_info(MpegEncContext s, AVFrame pict);
775	void ff_write_quant_matrix(PutBitContext pb, int16_t matrix);
776	int ff_find_unused_picture(MpegEncContext *s, int shared);
777	void ff_denoise_dct(MpegEncContext s, DCTELEM block);
778	void ff_update_duplicate_context(MpegEncContext dst, MpegEncContext src);
779	const uint8_t ff_find_start_code(const uint8_t p, const uint8_t end, uint32_t state);
780
781	void ff_er_frame_start(MpegEncContext *s);
782	void ff_er_frame_end(MpegEncContext *s);
783	void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
784
785
786	extern enum PixelFormat ff_yuv420p_list[2];
787
788	void ff_init_block_index(MpegEncContext *s);
789
790	static inline void ff_update_block_index(MpegEncContext *s){
791	const int block_size= 8>>s->avctx->lowres;
792
793	s->block_index[0]+=2;
794	s->block_index[1]+=2;
795	s->block_index[2]+=2;
796	s->block_index[3]+=2;
797	s->block_index[4]++;
798	s->block_index[5]++;
799	s->dest[0]+= 2*block_size;
800	s->dest[1]+= block_size;
801	s->dest[2]+= block_size;
802	}
803
804	static inline int get_bits_diff(MpegEncContext *s){
805	const int bits= put_bits_count(&s->pb);
806	const int last= s->last_bits;
807
808	s->last_bits = bits;
809
810	return bits - last;
811	}
812
813	/* motion_est.c */
814	void ff_estimate_p_frame_motion(MpegEncContext * s,
815	int mb_x, int mb_y);
816	void ff_estimate_b_frame_motion(MpegEncContext * s,
817	int mb_x, int mb_y);
818	int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
819	void ff_fix_long_p_mvs(MpegEncContext * s);
820	void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
821	int16_t (*mv_table)[2], int f_code, int type, int truncate);
822	void ff_init_me(MpegEncContext *s);
823	int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
824	inline int ff_epzs_motion_search(MpegEncContext * s, int mx_ptr, int my_ptr,
825	int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
826	int ref_mv_scale, int size, int h);
827	int inline ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
828	int ref_index, int size, int h, int add_rate);
829
830	/* mpeg12.c */
831	extern const int16_t ff_mpeg1_default_intra_matrix[64];
832	extern const int16_t ff_mpeg1_default_non_intra_matrix[64];
833	extern const uint8_t ff_mpeg1_dc_scale_table[128];
834
835	void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
836	void mpeg1_encode_mb(MpegEncContext *s,
837	DCTELEM block[6][64],
838	int motion_x, int motion_y);
839	void ff_mpeg1_encode_init(MpegEncContext *s);
840	void ff_mpeg1_encode_slice_header(MpegEncContext *s);
841	void ff_mpeg1_clean_buffers(MpegEncContext *s);
842	int ff_mpeg1_find_frame_end(ParseContext pc, const uint8_t buf, int buf_size);
843
844
845	/** RLTable. */
846	typedef struct RLTable {
847	int n; ///< number of entries of table_vlc minus 1
848	int last; ///< number of values for last = 0
849	const uint16_t (*table_vlc)[2];
850	const int8_t *table_run;
851	const int8_t *table_level;
852	uint8_t *index_run[2]; ///< encoding only
853	int8_t *max_level[2]; ///< encoding & decoding
854	int8_t *max_run[2]; ///< encoding & decoding
855	VLC vlc; ///< decoding only deprected FIXME remove
856	RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
857	} RLTable;
858
859	void init_rl(RLTable *rl, int use_static);
860	void init_vlc_rl(RLTable *rl, int use_static);
861
862	static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
863	{
864	int index;
865	index = rl->index_run[last][run];
866	if (index >= rl->n)
867	return rl->n;
868	if (level > rl->max_level[last][run])
869	return rl->n;
870	return index + level - 1;
871	}
872
873	extern const uint8_t ff_mpeg4_y_dc_scale_table[32];
874	extern const uint8_t ff_mpeg4_c_dc_scale_table[32];
875	extern const uint8_t ff_aic_dc_scale_table[32];
876	extern const int16_t ff_mpeg4_default_intra_matrix[64];
877	extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
878	extern const uint8_t ff_h263_chroma_qscale_table[32];
879	extern const uint8_t ff_h263_loop_filter_strength[32];
880
881	/* h261.c */
882	void ff_h261_loop_filter(MpegEncContext *s);
883	void ff_h261_reorder_mb_index(MpegEncContext* s);
884	void ff_h261_encode_mb(MpegEncContext *s,
885	DCTELEM block[6][64],
886	int motion_x, int motion_y);
887	void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
888	void ff_h261_encode_init(MpegEncContext *s);
889
890
891	/* h263.c, h263dec.c */
892	int ff_h263_decode_init(AVCodecContext *avctx);
893	int ff_h263_decode_frame(AVCodecContext *avctx,
894	void data, int data_size,
895	uint8_t *buf, int buf_size);
896	int ff_h263_decode_end(AVCodecContext *avctx);
897	void h263_encode_mb(MpegEncContext *s,
898	DCTELEM block[6][64],
899	int motion_x, int motion_y);
900	void mpeg4_encode_mb(MpegEncContext *s,
901	DCTELEM block[6][64],
902	int motion_x, int motion_y);
903	void h263_encode_picture_header(MpegEncContext *s, int picture_number);
904	void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
905	void h263_encode_gob_header(MpegEncContext * s, int mb_line);
906	int16_t h263_pred_motion(MpegEncContext s, int block, int dir,
907	int px, int py);
908	void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
909	int dir);
910	void ff_set_mpeg4_time(MpegEncContext * s, int picture_number);
911	void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
912	void h263_encode_init(MpegEncContext *s);
913	void h263_decode_init_vlc(MpegEncContext *s);
914	int h263_decode_picture_header(MpegEncContext *s);
915	int ff_h263_decode_gob_header(MpegEncContext *s);
916	int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
917	void ff_h263_update_motion_val(MpegEncContext * s);
918	void ff_h263_loop_filter(MpegEncContext * s);
919	void ff_set_qscale(MpegEncContext * s, int qscale);
920	int ff_h263_decode_mba(MpegEncContext *s);
921	void ff_h263_encode_mba(MpegEncContext *s);
922
923	int intel_h263_decode_picture_header(MpegEncContext *s);
924	int flv_h263_decode_picture_header(MpegEncContext *s);
925	int ff_h263_decode_mb(MpegEncContext *s,
926	DCTELEM block[6][64]);
927	int ff_mpeg4_decode_mb(MpegEncContext *s,
928	DCTELEM block[6][64]);
929	int h263_get_picture_format(int width, int height);
930	void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
931	void ff_mpeg4_clean_buffers(MpegEncContext *s);
932	void ff_mpeg4_stuffing(PutBitContext * pbc);
933	void ff_mpeg4_init_partitions(MpegEncContext *s);
934	void ff_mpeg4_merge_partitions(MpegEncContext *s);
935	void ff_clean_mpeg4_qscales(MpegEncContext *s);
936	void ff_clean_h263_qscales(MpegEncContext *s);
937	int ff_mpeg4_decode_partitions(MpegEncContext *s);
938	int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
939	int ff_h263_resync(MpegEncContext *s);
940	int ff_h263_get_gob_height(MpegEncContext *s);
941	int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
942	int ff_h263_round_chroma(int x);
943	void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
944	int ff_mpeg4_find_frame_end(ParseContext pc, const uint8_t buf, int buf_size);
945
946
947	/* rv10.c */
948	void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
949	int rv_decode_dc(MpegEncContext *s, int n);
950	void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
951
952
953	/* msmpeg4.c */
954	void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
955	void msmpeg4_encode_ext_header(MpegEncContext * s);
956	void msmpeg4_encode_mb(MpegEncContext * s,
957	DCTELEM block[6][64],
958	int motion_x, int motion_y);
959	int msmpeg4_decode_picture_header(MpegEncContext * s);
960	int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
961	int ff_msmpeg4_decode_init(MpegEncContext *s);
962	void ff_msmpeg4_encode_init(MpegEncContext *s);
963	int ff_wmv2_decode_picture_header(MpegEncContext * s);
964	int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
965	void ff_wmv2_add_mb(MpegEncContext s, DCTELEM block[6][64], uint8_t dest_y, uint8_t dest_cb, uint8_t dest_cr);
966	void ff_mspel_motion(MpegEncContext *s,
967	uint8_t dest_y, uint8_t dest_cb, uint8_t *dest_cr,
968	uint8_t *ref_picture, op_pixels_func (pix_op)[4],
969	int motion_x, int motion_y, int h);
970	int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
971	void ff_wmv2_encode_mb(MpegEncContext * s,
972	DCTELEM block[6][64],
973	int motion_x, int motion_y);
974
975	/* mjpeg.c */
976	int mjpeg_init(MpegEncContext *s);
977	void mjpeg_close(MpegEncContext *s);
978	void mjpeg_encode_mb(MpegEncContext *s,
979	DCTELEM block[6][64]);
980	void mjpeg_picture_header(MpegEncContext *s);
981	void mjpeg_picture_trailer(MpegEncContext *s);
982	void ff_mjpeg_stuffing(PutBitContext * pbc);
983
984
985	/* rate control */
986	int ff_rate_control_init(MpegEncContext *s);
987	float ff_rate_estimate_qscale(MpegEncContext *s, int dry_run);
988	void ff_write_pass1_stats(MpegEncContext *s);
989	void ff_rate_control_uninit(MpegEncContext *s);
990	double ff_eval(char s, double const_value, const char **const_name,
991	double (*func1)(void , double), const char **func1_name,
992	double (*func2)(void , double, double), char **func2_name,
993	void *opaque);
994	int ff_vbv_update(MpegEncContext *s, int frame_size);
995	void ff_get_2pass_fcode(MpegEncContext *s);
996
997	int ff_xvid_rate_control_init(MpegEncContext *s);
998	void ff_xvid_rate_control_uninit(MpegEncContext *s);
999	float ff_xvid_rate_estimate_qscale(MpegEncContext *s, int dry_run);
1000
1001	#endif /* AVCODEC_MPEGVIDEO_H */

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/libs/ffmpeg-20060710/libavcodec/mpegvideo.h@ 7692

Download in other formats: