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libavcodec/mpegvideo.h

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00001 /*
00002  * Generic DCT based hybrid video encoder
00003  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
00004  * Copyright (c) 2002-2004 Michael Niedermayer
00005  *
00006  * This file is part of FFmpeg.
00007  *
00008  * FFmpeg is free software; you can redistribute it and/or
00009  * modify it under the terms of the GNU Lesser General Public
00010  * License as published by the Free Software Foundation; either
00011  * version 2.1 of the License, or (at your option) any later version.
00012  *
00013  * FFmpeg is distributed in the hope that it will be useful,
00014  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00015  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016  * Lesser General Public License for more details.
00017  *
00018  * You should have received a copy of the GNU Lesser General Public
00019  * License along with FFmpeg; if not, write to the Free Software
00020  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00021  */
00022 
00028 #ifndef AVCODEC_MPEGVIDEO_H
00029 #define AVCODEC_MPEGVIDEO_H
00030 
00031 #include "dsputil.h"
00032 #include "bitstream.h"
00033 #include "ratecontrol.h"
00034 #include "parser.h"
00035 #include "mpeg12data.h"
00036 #include "rl.h"
00037 
00038 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
00039 
00040 enum OutputFormat {
00041     FMT_MPEG1,
00042     FMT_H261,
00043     FMT_H263,
00044     FMT_MJPEG,
00045     FMT_H264,
00046 };
00047 
00048 #define MPEG_BUF_SIZE (16 * 1024)
00049 
00050 #define QMAT_SHIFT_MMX 16
00051 #define QMAT_SHIFT 22
00052 
00053 #define MAX_FCODE 7
00054 #define MAX_MV 2048
00055 
00056 #define MAX_THREADS 8
00057 
00058 #define MAX_PICTURE_COUNT 32
00059 
00060 #define ME_MAP_SIZE 64
00061 #define ME_MAP_SHIFT 3
00062 #define ME_MAP_MV_BITS 11
00063 
00064 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
00065 
00066 #define INPLACE_OFFSET 16
00067 
00068 /* Start codes. */
00069 #define SEQ_END_CODE            0x000001b7
00070 #define SEQ_START_CODE          0x000001b3
00071 #define GOP_START_CODE          0x000001b8
00072 #define PICTURE_START_CODE      0x00000100
00073 #define SLICE_MIN_START_CODE    0x00000101
00074 #define SLICE_MAX_START_CODE    0x000001af
00075 #define EXT_START_CODE          0x000001b5
00076 #define USER_START_CODE         0x000001b2
00077 
00081 typedef struct Picture{
00082     FF_COMMON_FRAME
00083 
00087     uint8_t *interpolated[3];
00088     int16_t (*motion_val_base[2])[2];
00089     uint32_t *mb_type_base;
00090 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type
00091 #define IS_INTRA4x4(a)   ((a)&MB_TYPE_INTRA4x4)
00092 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
00093 #define IS_PCM(a)        ((a)&MB_TYPE_INTRA_PCM)
00094 #define IS_INTRA(a)      ((a)&7)
00095 #define IS_INTER(a)      ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
00096 #define IS_SKIP(a)       ((a)&MB_TYPE_SKIP)
00097 #define IS_INTRA_PCM(a)  ((a)&MB_TYPE_INTRA_PCM)
00098 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
00099 #define IS_DIRECT(a)     ((a)&MB_TYPE_DIRECT2)
00100 #define IS_GMC(a)        ((a)&MB_TYPE_GMC)
00101 #define IS_16X16(a)      ((a)&MB_TYPE_16x16)
00102 #define IS_16X8(a)       ((a)&MB_TYPE_16x8)
00103 #define IS_8X16(a)       ((a)&MB_TYPE_8x16)
00104 #define IS_8X8(a)        ((a)&MB_TYPE_8x8)
00105 #define IS_SUB_8X8(a)    ((a)&MB_TYPE_16x16) //note reused
00106 #define IS_SUB_8X4(a)    ((a)&MB_TYPE_16x8)  //note reused
00107 #define IS_SUB_4X8(a)    ((a)&MB_TYPE_8x16)  //note reused
00108 #define IS_SUB_4X4(a)    ((a)&MB_TYPE_8x8)   //note reused
00109 #define IS_ACPRED(a)     ((a)&MB_TYPE_ACPRED)
00110 #define IS_QUANT(a)      ((a)&MB_TYPE_QUANT)
00111 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
00112 #define USES_LIST(a, list) ((a) & ((MB_TYPE_P0L0|MB_TYPE_P1L0)<<(2*(list)))) ///< does this mb use listX, note does not work if subMBs
00113 #define HAS_CBP(a)        ((a)&MB_TYPE_CBP)
00114 
00115     int field_poc[2];           
00116     int poc;                    
00117     int frame_num;              
00118     int pic_id;                 
00120     int long_ref;               
00121     int ref_poc[2][2][16];      
00122     int ref_count[2][2];        
00123     int mbaff;                  
00124 
00125     int mb_var_sum;             
00126     int mc_mb_var_sum;          
00127     uint16_t *mb_var;           
00128     uint16_t *mc_mb_var;        
00129     uint8_t *mb_mean;           
00130     int32_t *mb_cmp_score;      
00131     int b_frame_score;          /* */
00132 } Picture;
00133 
00134 struct MpegEncContext;
00135 
00139 typedef struct MotionEstContext{
00140     AVCodecContext *avctx;
00141     int skip;                          
00142     int co_located_mv[4][2];           
00143     int direct_basis_mv[4][2];
00144     uint8_t *scratchpad;               
00145     uint8_t *best_mb;
00146     uint8_t *temp_mb[2];
00147     uint8_t *temp;
00148     int best_bits;
00149     uint32_t *map;                     
00150     uint32_t *score_map;               
00151     int map_generation;
00152     int pre_penalty_factor;
00153     int penalty_factor;                
00158     int sub_penalty_factor;
00159     int mb_penalty_factor;
00160     int flags;
00161     int sub_flags;
00162     int mb_flags;
00163     int pre_pass;                      
00164     int dia_size;
00165     int xmin;
00166     int xmax;
00167     int ymin;
00168     int ymax;
00169     int pred_x;
00170     int pred_y;
00171     uint8_t *src[4][4];
00172     uint8_t *ref[4][4];
00173     int stride;
00174     int uvstride;
00175     /* temp variables for picture complexity calculation */
00176     int mc_mb_var_sum_temp;
00177     int mb_var_sum_temp;
00178     int scene_change_score;
00179 /*    cmp, chroma_cmp;*/
00180     op_pixels_func (*hpel_put)[4];
00181     op_pixels_func (*hpel_avg)[4];
00182     qpel_mc_func (*qpel_put)[16];
00183     qpel_mc_func (*qpel_avg)[16];
00184     uint8_t (*mv_penalty)[MAX_MV*2+1];  
00185     uint8_t *current_mv_penalty;
00186     int (*sub_motion_search)(struct MpegEncContext * s,
00187                                   int *mx_ptr, int *my_ptr, int dmin,
00188                                   int src_index, int ref_index,
00189                                   int size, int h);
00190 }MotionEstContext;
00191 
00195 typedef struct MpegEncContext {
00196     struct AVCodecContext *avctx;
00197     /* the following parameters must be initialized before encoding */
00198     int width, height;
00199     int gop_size;
00200     int intra_only;   
00201     int bit_rate;     
00202     enum OutputFormat out_format; 
00203     int h263_pred;    
00204     int pb_frame;     
00205 
00206 /* the following codec id fields are deprecated in favor of codec_id */
00207     int h263_plus;    
00208     int h263_msmpeg4; 
00209     int h263_flv;     
00210 
00211     enum CodecID codec_id;     /* see CODEC_ID_xxx */
00212     int fixed_qscale; 
00213     int encoding;     
00214     int flags;        
00215     int flags2;       
00216     int max_b_frames; 
00217     int luma_elim_threshold;
00218     int chroma_elim_threshold;
00219     int strict_std_compliance; 
00220     int workaround_bugs;       
00221     int codec_tag;             
00222     int stream_codec_tag;      
00223     /* the following fields are managed internally by the encoder */
00224 
00226     PutBitContext pb;
00227 
00228     /* sequence parameters */
00229     int context_initialized;
00230     int input_picture_number;  
00231     int coded_picture_number;  
00232     int picture_number;       //FIXME remove, unclear definition
00233     int picture_in_gop_number; 
00234     int b_frames_since_non_b;  
00235     int64_t user_specified_pts;
00236     int mb_width, mb_height;   
00237     int mb_stride;             
00238     int b8_stride;             
00239     int b4_stride;             
00240     int h_edge_pos, v_edge_pos;
00241     int mb_num;                
00242     int linesize;              
00243     int uvlinesize;            
00244     Picture *picture;          
00245     Picture **input_picture;   
00246     Picture **reordered_input_picture; 
00247 
00248     int start_mb_y;            
00249     int end_mb_y;              
00250     struct MpegEncContext *thread_context[MAX_THREADS];
00251 
00256     Picture last_picture;
00257 
00262     Picture next_picture;
00263 
00268     Picture new_picture;
00269 
00274     Picture current_picture;    
00275 
00276     Picture *last_picture_ptr;     
00277     Picture *next_picture_ptr;     
00278     Picture *current_picture_ptr;  
00279     uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
00280     int last_dc[3];                
00281     int16_t *dc_val_base;
00282     int16_t *dc_val[3];            
00283     int16_t dc_cache[4*5];
00284     int y_dc_scale, c_dc_scale;
00285     const uint8_t *y_dc_scale_table;     
00286     const uint8_t *c_dc_scale_table;     
00287     const uint8_t *chroma_qscale_table;  
00288     uint8_t *coded_block_base;
00289     uint8_t *coded_block;          
00290     int16_t (*ac_val_base)[16];
00291     int16_t (*ac_val[3])[16];      
00292     int ac_pred;
00293     uint8_t *prev_pict_types;     
00294 #define PREV_PICT_TYPES_BUFFER_SIZE 256
00295     int mb_skipped;                
00296     uint8_t *mbskip_table;        
00298     uint8_t *mbintra_table;       
00299     uint8_t *cbp_table;           
00300     uint8_t *pred_dir_table;      
00301     uint8_t *allocated_edge_emu_buffer;
00302     uint8_t *edge_emu_buffer;     
00303     uint8_t *rd_scratchpad;       
00304     uint8_t *obmc_scratchpad;
00305     uint8_t *b_scratchpad;        
00306 
00307     int qscale;                 
00308     int chroma_qscale;          
00309     unsigned int lambda;        
00310     unsigned int lambda2;       
00311     int *lambda_table;
00312     int adaptive_quant;         
00313     int dquant;                 
00314     int pict_type;              
00315     int last_pict_type; //FIXME removes
00316     int last_non_b_pict_type;   
00317     int dropable;
00318     int frame_rate_index;
00319     int last_lambda_for[5];     
00320     int skipdct;                
00321 
00322     /* motion compensation */
00323     int unrestricted_mv;        
00324     int h263_long_vectors;      
00325     int decode;                 
00326 
00327     DSPContext dsp;             
00328     int f_code;                 
00329     int b_code;                 
00330     int16_t (*p_mv_table_base)[2];
00331     int16_t (*b_forw_mv_table_base)[2];
00332     int16_t (*b_back_mv_table_base)[2];
00333     int16_t (*b_bidir_forw_mv_table_base)[2];
00334     int16_t (*b_bidir_back_mv_table_base)[2];
00335     int16_t (*b_direct_mv_table_base)[2];
00336     int16_t (*p_field_mv_table_base[2][2])[2];
00337     int16_t (*b_field_mv_table_base[2][2][2])[2];
00338     int16_t (*p_mv_table)[2];            
00339     int16_t (*b_forw_mv_table)[2];       
00340     int16_t (*b_back_mv_table)[2];       
00341     int16_t (*b_bidir_forw_mv_table)[2]; 
00342     int16_t (*b_bidir_back_mv_table)[2]; 
00343     int16_t (*b_direct_mv_table)[2];     
00344     int16_t (*p_field_mv_table[2][2])[2];   
00345     int16_t (*b_field_mv_table[2][2][2])[2];
00346     uint8_t (*p_field_select_table[2]);
00347     uint8_t (*b_field_select_table[2][2]);
00348     int me_method;                       
00349     int mv_dir;
00350 #define MV_DIR_FORWARD   1
00351 #define MV_DIR_BACKWARD  2
00352 #define MV_DIRECT        4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
00353     int mv_type;
00354 #define MV_TYPE_16X16       0   ///< 1 vector for the whole mb
00355 #define MV_TYPE_8X8         1   ///< 4 vectors (h263, mpeg4 4MV)
00356 #define MV_TYPE_16X8        2   ///< 2 vectors, one per 16x8 block
00357 #define MV_TYPE_FIELD       3   ///< 2 vectors, one per field
00358 #define MV_TYPE_DMV         4   ///< 2 vectors, special mpeg2 Dual Prime Vectors
00359 
00364     int mv[2][4][2];
00365     int field_select[2][2];
00366     int last_mv[2][2][2];             
00367     uint8_t *fcode_tab;               
00368     int16_t direct_scale_mv[2][64];   
00369 
00370     MotionEstContext me;
00371 
00372     int no_rounding;  
00375     int hurry_up;     
00378     /* macroblock layer */
00379     int mb_x, mb_y;
00380     int mb_skip_run;
00381     int mb_intra;
00382     uint16_t *mb_type;           
00383 #define CANDIDATE_MB_TYPE_INTRA    0x01
00384 #define CANDIDATE_MB_TYPE_INTER    0x02
00385 #define CANDIDATE_MB_TYPE_INTER4V  0x04
00386 #define CANDIDATE_MB_TYPE_SKIPPED   0x08
00387 //#define MB_TYPE_GMC      0x10
00388 
00389 #define CANDIDATE_MB_TYPE_DIRECT   0x10
00390 #define CANDIDATE_MB_TYPE_FORWARD  0x20
00391 #define CANDIDATE_MB_TYPE_BACKWARD 0x40
00392 #define CANDIDATE_MB_TYPE_BIDIR    0x80
00393 
00394 #define CANDIDATE_MB_TYPE_INTER_I    0x100
00395 #define CANDIDATE_MB_TYPE_FORWARD_I  0x200
00396 #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
00397 #define CANDIDATE_MB_TYPE_BIDIR_I    0x800
00398 
00399 #define CANDIDATE_MB_TYPE_DIRECT0    0x1000
00400 
00401     int block_index[6]; 
00402     int block_wrap[6];
00403     uint8_t *dest[3];
00404 
00405     int *mb_index2xy;        
00406 
00408     uint16_t intra_matrix[64];
00409     uint16_t chroma_intra_matrix[64];
00410     uint16_t inter_matrix[64];
00411     uint16_t chroma_inter_matrix[64];
00412 #define QUANT_BIAS_SHIFT 8
00413     int intra_quant_bias;    
00414     int inter_quant_bias;    
00415     int min_qcoeff;          
00416     int max_qcoeff;          
00417     int ac_esc_length;       
00418     uint8_t *intra_ac_vlc_length;
00419     uint8_t *intra_ac_vlc_last_length;
00420     uint8_t *inter_ac_vlc_length;
00421     uint8_t *inter_ac_vlc_last_length;
00422     uint8_t *luma_dc_vlc_length;
00423     uint8_t *chroma_dc_vlc_length;
00424 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
00425 
00426     int coded_score[8];
00427 
00429     int (*q_intra_matrix)[64];
00430     int (*q_inter_matrix)[64];
00432     uint16_t (*q_intra_matrix16)[2][64];
00433     uint16_t (*q_inter_matrix16)[2][64];
00434     int block_last_index[12];  
00435     /* scantables */
00436     DECLARE_ALIGNED_8(ScanTable, intra_scantable);
00437     ScanTable intra_h_scantable;
00438     ScanTable intra_v_scantable;
00439     ScanTable inter_scantable; 
00440 
00441     /* noise reduction */
00442     int (*dct_error_sum)[64];
00443     int dct_count[2];
00444     uint16_t (*dct_offset)[64];
00445 
00446     void *opaque;              
00447 
00448     /* bit rate control */
00449     int64_t wanted_bits;
00450     int64_t total_bits;
00451     int frame_bits;                
00452     int next_lambda;               
00453     RateControlContext rc_context; 
00454 
00455     /* statistics, used for 2-pass encoding */
00456     int mv_bits;
00457     int header_bits;
00458     int i_tex_bits;
00459     int p_tex_bits;
00460     int i_count;
00461     int f_count;
00462     int b_count;
00463     int skip_count;
00464     int misc_bits; 
00465     int last_bits; 
00466 
00467     /* error concealment / resync */
00468     int error_count;
00469     uint8_t *error_status_table;       
00470 #define VP_START            1          ///< current MB is the first after a resync marker
00471 #define AC_ERROR            2
00472 #define DC_ERROR            4
00473 #define MV_ERROR            8
00474 #define AC_END              16
00475 #define DC_END              32
00476 #define MV_END              64
00477 //FIXME some prefix?
00478 
00479     int resync_mb_x;                 
00480     int resync_mb_y;                 
00481     GetBitContext last_resync_gb;    
00482     int mb_num_left;                 
00483     int next_p_frame_damaged;        
00484     int error_recognition;
00485 
00486     ParseContext parse_context;
00487 
00488     /* H.263 specific */
00489     int gob_index;
00490     int obmc;                       
00491     int showed_packed_warning;      
00492 
00493     /* H.263+ specific */
00494     int umvplus;                    
00495     int h263_aic;                   
00496     int h263_aic_dir;               
00497     int h263_slice_structured;
00498     int alt_inter_vlc;              
00499     int modified_quant;
00500     int loop_filter;
00501     int custom_pcf;
00502 
00503     /* mpeg4 specific */
00504     int time_increment_bits;        
00505     int last_time_base;
00506     int time_base;                  
00507     int64_t time;                   
00508     int64_t last_non_b_time;
00509     uint16_t pp_time;               
00510     uint16_t pb_time;               
00511     uint16_t pp_field_time;
00512     uint16_t pb_field_time;         
00513     int shape;
00514     int vol_sprite_usage;
00515     int sprite_width;
00516     int sprite_height;
00517     int sprite_left;
00518     int sprite_top;
00519     int sprite_brightness_change;
00520     int num_sprite_warping_points;
00521     int real_sprite_warping_points;
00522     int sprite_offset[2][2];         
00523     int sprite_delta[2][2];          
00524     int sprite_shift[2];             
00525     int mcsel;
00526     int quant_precision;
00527     int quarter_sample;              
00528     int scalability;
00529     int hierachy_type;
00530     int enhancement_type;
00531     int new_pred;
00532     int reduced_res_vop;
00533     int aspect_ratio_info; //FIXME remove
00534     int sprite_warping_accuracy;
00535     int low_latency_sprite;
00536     int data_partitioning;           
00537     int partitioned_frame;           
00538     int rvlc;                        
00539     int resync_marker;               
00540     int low_delay;                   
00541     int vo_type;
00542     int vol_control_parameters;      
00543     int intra_dc_threshold;          
00544     int use_intra_dc_vlc;
00545     PutBitContext tex_pb;            
00546     PutBitContext pb2;               
00547     int mpeg_quant;
00548     int t_frame;                       
00549     int padding_bug_score;             
00550     int cplx_estimation_trash_i;
00551     int cplx_estimation_trash_p;
00552     int cplx_estimation_trash_b;
00553 
00554     /* divx specific, used to workaround (many) bugs in divx5 */
00555     int divx_version;
00556     int divx_build;
00557     int divx_packed;
00558     uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
00559     int bitstream_buffer_size;
00560     unsigned int allocated_bitstream_buffer_size;
00561 
00562     int xvid_build;
00563 
00564     /* lavc specific stuff, used to workaround bugs in libavcodec */
00565     int lavc_build;
00566 
00567     /* RV10 specific */
00568     int rv10_version; 
00569     int rv10_first_dc_coded[3];
00570 
00571     /* MJPEG specific */
00572     struct MJpegContext *mjpeg_ctx;
00573     int mjpeg_vsample[3];       
00574     int mjpeg_hsample[3];       
00575 
00576     /* MSMPEG4 specific */
00577     int mv_table_index;
00578     int rl_table_index;
00579     int rl_chroma_table_index;
00580     int dc_table_index;
00581     int use_skip_mb_code;
00582     int slice_height;      
00583     int first_slice_line;  
00584     int flipflop_rounding;
00585     int msmpeg4_version;   
00586     int per_mb_rl_table;
00587     int esc3_level_length;
00588     int esc3_run_length;
00590     int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
00591     int inter_intra_pred;
00592     int mspel;
00593 
00594     /* decompression specific */
00595     GetBitContext gb;
00596 
00597     /* Mpeg1 specific */
00598     int gop_picture_number;  
00599     int last_mv_dir;         
00600     int broken_link;         
00601     uint8_t *vbv_delay_ptr;  
00602 
00603     /* MPEG-2-specific - I wished not to have to support this mess. */
00604     int progressive_sequence;
00605     int mpeg_f_code[2][2];
00606     int picture_structure;
00607 /* picture type */
00608 #define PICT_TOP_FIELD     1
00609 #define PICT_BOTTOM_FIELD  2
00610 #define PICT_FRAME         3
00611 
00612     int intra_dc_precision;
00613     int frame_pred_frame_dct;
00614     int top_field_first;
00615     int concealment_motion_vectors;
00616     int q_scale_type;
00617     int intra_vlc_format;
00618     int alternate_scan;
00619     int repeat_first_field;
00620     int chroma_420_type;
00621     int chroma_format;
00622 #define CHROMA_420 1
00623 #define CHROMA_422 2
00624 #define CHROMA_444 3
00625     int chroma_x_shift;//depend on pix_format, that depend on chroma_format
00626     int chroma_y_shift;
00627 
00628     int progressive_frame;
00629     int full_pel[2];
00630     int interlaced_dct;
00631     int first_slice;
00632     int first_field;         
00633 
00634     /* RTP specific */
00635     int rtp_mode;
00636 
00637     uint8_t *ptr_lastgob;
00638     int swap_uv;             //vcr2 codec is an MPEG-2 variant with U and V swapped
00639     DCTELEM (*pblocks[12])[64];
00640 
00641     DCTELEM (*block)[64]; 
00642     DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
00643     int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
00644 #define SLICE_OK         0
00645 #define SLICE_ERROR     -1
00646 #define SLICE_END       -2 ///<end marker found
00647 #define SLICE_NOEND     -3 ///<no end marker or error found but mb count exceeded
00648 
00649     void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
00650                            DCTELEM *block/*align 16*/, int n, int qscale);
00651     void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
00652                            DCTELEM *block/*align 16*/, int n, int qscale);
00653     void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
00654                            DCTELEM *block/*align 16*/, int n, int qscale);
00655     void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
00656                            DCTELEM *block/*align 16*/, int n, int qscale);
00657     void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
00658                            DCTELEM *block/*align 16*/, int n, int qscale);
00659     void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
00660                            DCTELEM *block/*align 16*/, int n, int qscale);
00661     void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
00662                            DCTELEM *block/*align 16*/, int n, int qscale);
00663     void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
00664                            DCTELEM *block/*align 16*/, int n, int qscale);
00665     void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
00666                            DCTELEM *block/*align 16*/, int n, int qscale);
00667     void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
00668                            DCTELEM *block/*align 16*/, int n, int qscale);
00669     int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
00670     int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
00671     void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
00672 } MpegEncContext;
00673 
00674 
00675 void MPV_decode_defaults(MpegEncContext *s);
00676 int MPV_common_init(MpegEncContext *s);
00677 void MPV_common_end(MpegEncContext *s);
00678 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
00679 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
00680 void MPV_frame_end(MpegEncContext *s);
00681 int MPV_encode_init(AVCodecContext *avctx);
00682 int MPV_encode_end(AVCodecContext *avctx);
00683 int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
00684 void MPV_common_init_mmx(MpegEncContext *s);
00685 void MPV_common_init_axp(MpegEncContext *s);
00686 void MPV_common_init_mlib(MpegEncContext *s);
00687 void MPV_common_init_mmi(MpegEncContext *s);
00688 void MPV_common_init_arm(MpegEncContext *s);
00689 void MPV_common_init_altivec(MpegEncContext *s);
00690 void ff_clean_intra_table_entries(MpegEncContext *s);
00691 void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
00692 void ff_mpeg_flush(AVCodecContext *avctx);
00693 void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
00694 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
00695 int ff_find_unused_picture(MpegEncContext *s, int shared);
00696 void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
00697 void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
00698 const uint8_t *ff_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
00699 
00700 void ff_er_frame_start(MpegEncContext *s);
00701 void ff_er_frame_end(MpegEncContext *s);
00702 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
00703 
00704 int ff_dct_common_init(MpegEncContext *s);
00705 void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
00706                        const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
00707 
00708 void ff_init_block_index(MpegEncContext *s);
00709 void ff_copy_picture(Picture *dst, Picture *src);
00710 
00711 extern const enum PixelFormat ff_pixfmt_list_420[];
00712 extern const enum PixelFormat ff_hwaccel_pixfmt_list_420[];
00713 
00714 static inline void ff_update_block_index(MpegEncContext *s){
00715     const int block_size= 8>>s->avctx->lowres;
00716 
00717     s->block_index[0]+=2;
00718     s->block_index[1]+=2;
00719     s->block_index[2]+=2;
00720     s->block_index[3]+=2;
00721     s->block_index[4]++;
00722     s->block_index[5]++;
00723     s->dest[0]+= 2*block_size;
00724     s->dest[1]+= block_size;
00725     s->dest[2]+= block_size;
00726 }
00727 
00728 static inline int get_bits_diff(MpegEncContext *s){
00729     const int bits= put_bits_count(&s->pb);
00730     const int last= s->last_bits;
00731 
00732     s->last_bits = bits;
00733 
00734     return bits - last;
00735 }
00736 
00737 static inline int ff_h263_round_chroma(int x){
00738     static const uint8_t h263_chroma_roundtab[16] = {
00739     //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
00740         0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
00741     };
00742     return h263_chroma_roundtab[x & 0xf] + (x >> 3);
00743 }
00744 
00745 /* motion_est.c */
00746 void ff_estimate_p_frame_motion(MpegEncContext * s,
00747                              int mb_x, int mb_y);
00748 void ff_estimate_b_frame_motion(MpegEncContext * s,
00749                              int mb_x, int mb_y);
00750 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
00751 void ff_fix_long_p_mvs(MpegEncContext * s);
00752 void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
00753                      int16_t (*mv_table)[2], int f_code, int type, int truncate);
00754 int ff_init_me(MpegEncContext *s);
00755 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
00756 int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
00757                              int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
00758                              int ref_mv_scale, int size, int h);
00759 int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
00760                                int ref_index, int size, int h, int add_rate);
00761 
00762 /* mpeg12.c */
00763 extern const uint8_t ff_mpeg1_dc_scale_table[128];
00764 
00765 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
00766 void mpeg1_encode_mb(MpegEncContext *s,
00767                      DCTELEM block[6][64],
00768                      int motion_x, int motion_y);
00769 void ff_mpeg1_encode_init(MpegEncContext *s);
00770 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
00771 void ff_mpeg1_clean_buffers(MpegEncContext *s);
00772 int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size);
00773 
00774 extern const uint8_t ff_mpeg4_y_dc_scale_table[32];
00775 extern const uint8_t ff_mpeg4_c_dc_scale_table[32];
00776 extern const uint8_t ff_aic_dc_scale_table[32];
00777 extern const int16_t ff_mpeg4_default_intra_matrix[64];
00778 extern const int16_t ff_mpeg4_default_non_intra_matrix[64];
00779 extern const uint8_t ff_h263_chroma_qscale_table[32];
00780 extern const uint8_t ff_h263_loop_filter_strength[32];
00781 
00782 /* h261.c */
00783 void ff_h261_loop_filter(MpegEncContext *s);
00784 void ff_h261_reorder_mb_index(MpegEncContext* s);
00785 void ff_h261_encode_mb(MpegEncContext *s,
00786                     DCTELEM block[6][64],
00787                     int motion_x, int motion_y);
00788 void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
00789 void ff_h261_encode_init(MpegEncContext *s);
00790 int ff_h261_get_picture_format(int width, int height);
00791 
00792 
00793 /* h263.c, h263dec.c */
00794 int ff_h263_decode_init(AVCodecContext *avctx);
00795 int ff_h263_decode_frame(AVCodecContext *avctx,
00796                              void *data, int *data_size,
00797                              const uint8_t *buf, int buf_size);
00798 int ff_h263_decode_end(AVCodecContext *avctx);
00799 void h263_encode_mb(MpegEncContext *s,
00800                     DCTELEM block[6][64],
00801                     int motion_x, int motion_y);
00802 void mpeg4_encode_mb(MpegEncContext *s,
00803                     DCTELEM block[6][64],
00804                     int motion_x, int motion_y);
00805 void h263_encode_picture_header(MpegEncContext *s, int picture_number);
00806 void ff_flv_encode_picture_header(MpegEncContext *s, int picture_number);
00807 void h263_encode_gob_header(MpegEncContext * s, int mb_line);
00808 int16_t *h263_pred_motion(MpegEncContext * s, int block, int dir,
00809                         int *px, int *py);
00810 void mpeg4_pred_ac(MpegEncContext * s, DCTELEM *block, int n,
00811                    int dir);
00812 void ff_set_mpeg4_time(MpegEncContext * s);
00813 void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
00814 void h263_encode_init(MpegEncContext *s);
00815 void h263_decode_init_vlc(MpegEncContext *s);
00816 int h263_decode_picture_header(MpegEncContext *s);
00817 int ff_h263_decode_gob_header(MpegEncContext *s);
00818 int ff_mpeg4_decode_picture_header(MpegEncContext * s, GetBitContext *gb);
00819 void ff_h263_update_motion_val(MpegEncContext * s);
00820 void ff_h263_loop_filter(MpegEncContext * s);
00821 void ff_set_qscale(MpegEncContext * s, int qscale);
00822 int ff_h263_decode_mba(MpegEncContext *s);
00823 void ff_h263_encode_mba(MpegEncContext *s);
00824 
00825 int intel_h263_decode_picture_header(MpegEncContext *s);
00826 int flv_h263_decode_picture_header(MpegEncContext *s);
00827 int ff_h263_decode_mb(MpegEncContext *s,
00828                       DCTELEM block[6][64]);
00829 int ff_mpeg4_decode_mb(MpegEncContext *s,
00830                       DCTELEM block[6][64]);
00831 int h263_get_picture_format(int width, int height);
00832 void ff_mpeg4_encode_video_packet_header(MpegEncContext *s);
00833 void ff_mpeg4_clean_buffers(MpegEncContext *s);
00834 void ff_mpeg4_stuffing(PutBitContext * pbc);
00835 void ff_mpeg4_init_partitions(MpegEncContext *s);
00836 void ff_mpeg4_merge_partitions(MpegEncContext *s);
00837 void ff_clean_mpeg4_qscales(MpegEncContext *s);
00838 void ff_clean_h263_qscales(MpegEncContext *s);
00839 int ff_mpeg4_decode_partitions(MpegEncContext *s);
00840 int ff_mpeg4_get_video_packet_prefix_length(MpegEncContext *s);
00841 int ff_h263_resync(MpegEncContext *s);
00842 const uint8_t *ff_h263_find_resync_marker(const uint8_t *p, const uint8_t *end);
00843 int ff_h263_get_gob_height(MpegEncContext *s);
00844 void ff_mpeg4_init_direct_mv(MpegEncContext *s);
00845 int ff_mpeg4_set_direct_mv(MpegEncContext *s, int mx, int my);
00846 void ff_h263_encode_motion(MpegEncContext * s, int val, int f_code);
00847 
00848 
00849 /* rv10.c */
00850 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
00851 int rv_decode_dc(MpegEncContext *s, int n);
00852 void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
00853 
00854 
00855 /* msmpeg4.c */
00856 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
00857 void msmpeg4_encode_ext_header(MpegEncContext * s);
00858 void msmpeg4_encode_mb(MpegEncContext * s,
00859                        DCTELEM block[6][64],
00860                        int motion_x, int motion_y);
00861 int msmpeg4_decode_picture_header(MpegEncContext * s);
00862 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
00863 int ff_msmpeg4_decode_init(MpegEncContext *s);
00864 void ff_msmpeg4_encode_init(MpegEncContext *s);
00865 int ff_wmv2_decode_picture_header(MpegEncContext * s);
00866 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
00867 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
00868 void ff_mspel_motion(MpegEncContext *s,
00869                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00870                                uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
00871                                int motion_x, int motion_y, int h);
00872 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
00873 void ff_wmv2_encode_mb(MpegEncContext * s,
00874                        DCTELEM block[6][64],
00875                        int motion_x, int motion_y);
00876 
00877 #endif /* AVCODEC_MPEGVIDEO_H */
00878 

Generated on Tue Nov 4 2014 12:59:22 for ffmpeg by  doxygen 1.7.1