• Main Page
  • Related Pages
  • Modules
  • Data Structures
  • Files
  • Examples
  • File List
  • Globals

libavcodec/mpegvideo.h

Go to the documentation of this file.
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 "get_bits.h"
00033 #include "put_bits.h"
00034 #include "ratecontrol.h"
00035 #include "parser.h"
00036 #include "mpeg12data.h"
00037 #include "rl.h"
00038 
00039 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
00040 
00041 enum OutputFormat {
00042     FMT_MPEG1,
00043     FMT_H261,
00044     FMT_H263,
00045     FMT_MJPEG,
00046     FMT_H264,
00047 };
00048 
00049 #define MPEG_BUF_SIZE (16 * 1024)
00050 
00051 #define QMAT_SHIFT_MMX 16
00052 #define QMAT_SHIFT 22
00053 
00054 #define MAX_FCODE 7
00055 #define MAX_MV 2048
00056 
00057 #define MAX_THREADS 16
00058 
00059 #define MAX_PICTURE_COUNT 32
00060 
00061 #define ME_MAP_SIZE 64
00062 #define ME_MAP_SHIFT 3
00063 #define ME_MAP_MV_BITS 11
00064 
00065 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
00066 
00067 #define INPLACE_OFFSET 16
00068 
00069 /* Start codes. */
00070 #define SEQ_END_CODE            0x000001b7
00071 #define SEQ_START_CODE          0x000001b3
00072 #define GOP_START_CODE          0x000001b8
00073 #define PICTURE_START_CODE      0x00000100
00074 #define SLICE_MIN_START_CODE    0x00000101
00075 #define SLICE_MAX_START_CODE    0x000001af
00076 #define EXT_START_CODE          0x000001b5
00077 #define USER_START_CODE         0x000001b2
00078 
00079 struct MpegEncContext;
00080 
00084 typedef struct Picture{
00085     FF_COMMON_FRAME
00086 
00090     uint8_t *interpolated[3];
00091     int8_t *qscale_table_base;
00092     int16_t (*motion_val_base[2])[2];
00093     uint32_t *mb_type_base;
00094 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type
00095 #define IS_INTRA4x4(a)   ((a)&MB_TYPE_INTRA4x4)
00096 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
00097 #define IS_PCM(a)        ((a)&MB_TYPE_INTRA_PCM)
00098 #define IS_INTRA(a)      ((a)&7)
00099 #define IS_INTER(a)      ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
00100 #define IS_SKIP(a)       ((a)&MB_TYPE_SKIP)
00101 #define IS_INTRA_PCM(a)  ((a)&MB_TYPE_INTRA_PCM)
00102 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
00103 #define IS_DIRECT(a)     ((a)&MB_TYPE_DIRECT2)
00104 #define IS_GMC(a)        ((a)&MB_TYPE_GMC)
00105 #define IS_16X16(a)      ((a)&MB_TYPE_16x16)
00106 #define IS_16X8(a)       ((a)&MB_TYPE_16x8)
00107 #define IS_8X16(a)       ((a)&MB_TYPE_8x16)
00108 #define IS_8X8(a)        ((a)&MB_TYPE_8x8)
00109 #define IS_SUB_8X8(a)    ((a)&MB_TYPE_16x16) //note reused
00110 #define IS_SUB_8X4(a)    ((a)&MB_TYPE_16x8)  //note reused
00111 #define IS_SUB_4X8(a)    ((a)&MB_TYPE_8x16)  //note reused
00112 #define IS_SUB_4X4(a)    ((a)&MB_TYPE_8x8)   //note reused
00113 #define IS_ACPRED(a)     ((a)&MB_TYPE_ACPRED)
00114 #define IS_QUANT(a)      ((a)&MB_TYPE_QUANT)
00115 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
00116 #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
00117 #define HAS_CBP(a)        ((a)&MB_TYPE_CBP)
00118 
00119     int field_poc[2];           
00120     int poc;                    
00121     int frame_num;              
00122     int mmco_reset;             
00123     int pic_id;                 
00125     int long_ref;               
00126     int ref_poc[2][2][32];      
00127     int ref_count[2][2];        
00128     int mbaff;                  
00129     int field_picture;          
00130 
00131     int mb_var_sum;             
00132     int mc_mb_var_sum;          
00133     uint16_t *mb_var;           
00134     uint16_t *mc_mb_var;        
00135     uint8_t *mb_mean;           
00136     int32_t *mb_cmp_score;      
00137     int b_frame_score;          /* */
00138     struct MpegEncContext *owner2; 
00139 } Picture;
00140 
00144 typedef struct MotionEstContext{
00145     AVCodecContext *avctx;
00146     int skip;                          
00147     int co_located_mv[4][2];           
00148     int direct_basis_mv[4][2];
00149     uint8_t *scratchpad;               
00150     uint8_t *best_mb;
00151     uint8_t *temp_mb[2];
00152     uint8_t *temp;
00153     int best_bits;
00154     uint32_t *map;                     
00155     uint32_t *score_map;               
00156     unsigned map_generation;
00157     int pre_penalty_factor;
00158     int penalty_factor;                
00163     int sub_penalty_factor;
00164     int mb_penalty_factor;
00165     int flags;
00166     int sub_flags;
00167     int mb_flags;
00168     int pre_pass;                      
00169     int dia_size;
00170     int xmin;
00171     int xmax;
00172     int ymin;
00173     int ymax;
00174     int pred_x;
00175     int pred_y;
00176     uint8_t *src[4][4];
00177     uint8_t *ref[4][4];
00178     int stride;
00179     int uvstride;
00180     /* temp variables for picture complexity calculation */
00181     int mc_mb_var_sum_temp;
00182     int mb_var_sum_temp;
00183     int scene_change_score;
00184 /*    cmp, chroma_cmp;*/
00185     op_pixels_func (*hpel_put)[4];
00186     op_pixels_func (*hpel_avg)[4];
00187     qpel_mc_func (*qpel_put)[16];
00188     qpel_mc_func (*qpel_avg)[16];
00189     uint8_t (*mv_penalty)[MAX_MV*2+1];  
00190     uint8_t *current_mv_penalty;
00191     int (*sub_motion_search)(struct MpegEncContext * s,
00192                                   int *mx_ptr, int *my_ptr, int dmin,
00193                                   int src_index, int ref_index,
00194                                   int size, int h);
00195 }MotionEstContext;
00196 
00200 typedef struct MpegEncContext {
00201     struct AVCodecContext *avctx;
00202     /* the following parameters must be initialized before encoding */
00203     int width, height;
00204     int gop_size;
00205     int intra_only;   
00206     int bit_rate;     
00207     enum OutputFormat out_format; 
00208     int h263_pred;    
00209     int pb_frame;     
00210 
00211 /* the following codec id fields are deprecated in favor of codec_id */
00212     int h263_plus;    
00213     int h263_msmpeg4; 
00214     int h263_flv;     
00215 
00216     enum CodecID codec_id;     /* see CODEC_ID_xxx */
00217     int fixed_qscale; 
00218     int encoding;     
00219     int flags;        
00220     int flags2;       
00221     int max_b_frames; 
00222     int luma_elim_threshold;
00223     int chroma_elim_threshold;
00224     int strict_std_compliance; 
00225     int workaround_bugs;       
00226     int codec_tag;             
00227     int stream_codec_tag;      
00228     /* the following fields are managed internally by the encoder */
00229 
00230     /* sequence parameters */
00231     int context_initialized;
00232     int input_picture_number;  
00233     int coded_picture_number;  
00234     int picture_number;       //FIXME remove, unclear definition
00235     int picture_in_gop_number; 
00236     int b_frames_since_non_b;  
00237     int64_t user_specified_pts;
00238     int mb_width, mb_height;   
00239     int mb_stride;             
00240     int b8_stride;             
00241     int b4_stride;             
00242     int h_edge_pos, v_edge_pos;
00243     int mb_num;                
00244     int linesize;              
00245     int uvlinesize;            
00246     Picture *picture;          
00247     Picture **input_picture;   
00248     Picture **reordered_input_picture; 
00249 
00250     int y_dc_scale, c_dc_scale;
00251     int ac_pred;
00252     int block_last_index[12];  
00253     int h263_aic;              
00254 
00255     /* scantables */
00256     ScanTable inter_scantable; 
00257     ScanTable intra_scantable;
00258     ScanTable intra_h_scantable;
00259     ScanTable intra_v_scantable;
00260 
00261     /* WARNING: changes above this line require updates to hardcoded
00262      *          offsets used in asm. */
00263 
00265     PutBitContext pb;
00266 
00267     int start_mb_y;            
00268     int end_mb_y;              
00269     struct MpegEncContext *thread_context[MAX_THREADS];
00270 
00275     Picture last_picture;
00276 
00281     Picture next_picture;
00282 
00287     Picture new_picture;
00288 
00293     Picture current_picture;    
00294 
00295     Picture *last_picture_ptr;     
00296     Picture *next_picture_ptr;     
00297     Picture *current_picture_ptr;  
00298     int picture_count;             
00299     int picture_range_start, picture_range_end; 
00300     uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
00301     int last_dc[3];                
00302     int16_t *dc_val_base;
00303     int16_t *dc_val[3];            
00304     int16_t dc_cache[4*5];
00305     const uint8_t *y_dc_scale_table;     
00306     const uint8_t *c_dc_scale_table;     
00307     const uint8_t *chroma_qscale_table;  
00308     uint8_t *coded_block_base;
00309     uint8_t *coded_block;          
00310     int16_t (*ac_val_base)[16];
00311     int16_t (*ac_val[3])[16];      
00312     uint8_t *prev_pict_types;     
00313 #define PREV_PICT_TYPES_BUFFER_SIZE 256
00314     int mb_skipped;                
00315     uint8_t *mbskip_table;        
00317     uint8_t *mbintra_table;       
00318     uint8_t *cbp_table;           
00319     uint8_t *pred_dir_table;      
00320     uint8_t *edge_emu_buffer;     
00321     uint8_t *rd_scratchpad;       
00322     uint8_t *obmc_scratchpad;
00323     uint8_t *b_scratchpad;        
00324 
00325     int qscale;                 
00326     int chroma_qscale;          
00327     unsigned int lambda;        
00328     unsigned int lambda2;       
00329     int *lambda_table;
00330     int adaptive_quant;         
00331     int dquant;                 
00332     int closed_gop;             
00333     int pict_type;              
00334     int last_pict_type; //FIXME removes
00335     int last_non_b_pict_type;   
00336     int dropable;
00337     int frame_rate_index;
00338     int last_lambda_for[5];     
00339     int skipdct;                
00340 
00341     /* motion compensation */
00342     int unrestricted_mv;        
00343     int h263_long_vectors;      
00344     int decode;                 
00345 
00346     DSPContext dsp;             
00347     int f_code;                 
00348     int b_code;                 
00349     int16_t (*p_mv_table_base)[2];
00350     int16_t (*b_forw_mv_table_base)[2];
00351     int16_t (*b_back_mv_table_base)[2];
00352     int16_t (*b_bidir_forw_mv_table_base)[2];
00353     int16_t (*b_bidir_back_mv_table_base)[2];
00354     int16_t (*b_direct_mv_table_base)[2];
00355     int16_t (*p_field_mv_table_base[2][2])[2];
00356     int16_t (*b_field_mv_table_base[2][2][2])[2];
00357     int16_t (*p_mv_table)[2];            
00358     int16_t (*b_forw_mv_table)[2];       
00359     int16_t (*b_back_mv_table)[2];       
00360     int16_t (*b_bidir_forw_mv_table)[2]; 
00361     int16_t (*b_bidir_back_mv_table)[2]; 
00362     int16_t (*b_direct_mv_table)[2];     
00363     int16_t (*p_field_mv_table[2][2])[2];   
00364     int16_t (*b_field_mv_table[2][2][2])[2];
00365     uint8_t (*p_field_select_table[2]);
00366     uint8_t (*b_field_select_table[2][2]);
00367     int me_method;                       
00368     int mv_dir;
00369 #define MV_DIR_FORWARD   1
00370 #define MV_DIR_BACKWARD  2
00371 #define MV_DIRECT        4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
00372     int mv_type;
00373 #define MV_TYPE_16X16       0   ///< 1 vector for the whole mb
00374 #define MV_TYPE_8X8         1   ///< 4 vectors (h263, mpeg4 4MV)
00375 #define MV_TYPE_16X8        2   ///< 2 vectors, one per 16x8 block
00376 #define MV_TYPE_FIELD       3   ///< 2 vectors, one per field
00377 #define MV_TYPE_DMV         4   ///< 2 vectors, special mpeg2 Dual Prime Vectors
00378 
00383     int mv[2][4][2];
00384     int field_select[2][2];
00385     int last_mv[2][2][2];             
00386     uint8_t *fcode_tab;               
00387     int16_t direct_scale_mv[2][64];   
00388 
00389     MotionEstContext me;
00390 
00391     int no_rounding;  
00394 #if FF_API_HURRY_UP
00395     int hurry_up;     
00397 #endif
00398 
00399     /* macroblock layer */
00400     int mb_x, mb_y;
00401     int mb_skip_run;
00402     int mb_intra;
00403     uint16_t *mb_type;           
00404 #define CANDIDATE_MB_TYPE_INTRA    0x01
00405 #define CANDIDATE_MB_TYPE_INTER    0x02
00406 #define CANDIDATE_MB_TYPE_INTER4V  0x04
00407 #define CANDIDATE_MB_TYPE_SKIPPED   0x08
00408 //#define MB_TYPE_GMC      0x10
00409 
00410 #define CANDIDATE_MB_TYPE_DIRECT   0x10
00411 #define CANDIDATE_MB_TYPE_FORWARD  0x20
00412 #define CANDIDATE_MB_TYPE_BACKWARD 0x40
00413 #define CANDIDATE_MB_TYPE_BIDIR    0x80
00414 
00415 #define CANDIDATE_MB_TYPE_INTER_I    0x100
00416 #define CANDIDATE_MB_TYPE_FORWARD_I  0x200
00417 #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
00418 #define CANDIDATE_MB_TYPE_BIDIR_I    0x800
00419 
00420 #define CANDIDATE_MB_TYPE_DIRECT0    0x1000
00421 
00422     int block_index[6]; 
00423     int block_wrap[6];
00424     uint8_t *dest[3];
00425 
00426     int *mb_index2xy;        
00427 
00429     uint16_t intra_matrix[64];
00430     uint16_t chroma_intra_matrix[64];
00431     uint16_t inter_matrix[64];
00432     uint16_t chroma_inter_matrix[64];
00433 #define QUANT_BIAS_SHIFT 8
00434     int intra_quant_bias;    
00435     int inter_quant_bias;    
00436     int min_qcoeff;          
00437     int max_qcoeff;          
00438     int ac_esc_length;       
00439     uint8_t *intra_ac_vlc_length;
00440     uint8_t *intra_ac_vlc_last_length;
00441     uint8_t *inter_ac_vlc_length;
00442     uint8_t *inter_ac_vlc_last_length;
00443     uint8_t *luma_dc_vlc_length;
00444     uint8_t *chroma_dc_vlc_length;
00445 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
00446 
00447     int coded_score[8];
00448 
00450     int (*q_intra_matrix)[64];
00451     int (*q_inter_matrix)[64];
00453     uint16_t (*q_intra_matrix16)[2][64];
00454     uint16_t (*q_inter_matrix16)[2][64];
00455 
00456     /* noise reduction */
00457     int (*dct_error_sum)[64];
00458     int dct_count[2];
00459     uint16_t (*dct_offset)[64];
00460 
00461     void *opaque;              
00462 
00463     /* bit rate control */
00464     int64_t wanted_bits;
00465     int64_t total_bits;
00466     int frame_bits;                
00467     int next_lambda;               
00468     RateControlContext rc_context; 
00469 
00470     /* statistics, used for 2-pass encoding */
00471     int mv_bits;
00472     int header_bits;
00473     int i_tex_bits;
00474     int p_tex_bits;
00475     int i_count;
00476     int f_count;
00477     int b_count;
00478     int skip_count;
00479     int misc_bits; 
00480     int last_bits; 
00481 
00482     /* error concealment / resync */
00483     int error_count, error_occurred;
00484     uint8_t *error_status_table;       
00485 #define VP_START            1          ///< current MB is the first after a resync marker
00486 #define AC_ERROR            2
00487 #define DC_ERROR            4
00488 #define MV_ERROR            8
00489 #define AC_END              16
00490 #define DC_END              32
00491 #define MV_END              64
00492 //FIXME some prefix?
00493 
00494     int resync_mb_x;                 
00495     int resync_mb_y;                 
00496     GetBitContext last_resync_gb;    
00497     int mb_num_left;                 
00498     int next_p_frame_damaged;        
00499     int error_recognition;
00500 
00501     ParseContext parse_context;
00502 
00503     /* H.263 specific */
00504     int gob_index;
00505     int obmc;                       
00506     int showed_packed_warning;      
00507 
00508     /* H.263+ specific */
00509     int umvplus;                    
00510     int h263_aic_dir;               
00511     int h263_slice_structured;
00512     int alt_inter_vlc;              
00513     int modified_quant;
00514     int loop_filter;
00515     int custom_pcf;
00516 
00517     /* mpeg4 specific */
00518     int time_increment_bits;        
00519     int last_time_base;
00520     int time_base;                  
00521     int64_t time;                   
00522     int64_t last_non_b_time;
00523     uint16_t pp_time;               
00524     uint16_t pb_time;               
00525     uint16_t pp_field_time;
00526     uint16_t pb_field_time;         
00527     int shape;
00528     int vol_sprite_usage;
00529     int sprite_width;
00530     int sprite_height;
00531     int sprite_left;
00532     int sprite_top;
00533     int sprite_brightness_change;
00534     int num_sprite_warping_points;
00535     int real_sprite_warping_points;
00536     uint16_t sprite_traj[4][2];      
00537     int sprite_offset[2][2];         
00538     int sprite_delta[2][2];          
00539     int sprite_shift[2];             
00540     int mcsel;
00541     int quant_precision;
00542     int quarter_sample;              
00543     int scalability;
00544     int hierachy_type;
00545     int enhancement_type;
00546     int new_pred;
00547     int reduced_res_vop;
00548     int aspect_ratio_info; //FIXME remove
00549     int sprite_warping_accuracy;
00550     int low_latency_sprite;
00551     int data_partitioning;           
00552     int partitioned_frame;           
00553     int rvlc;                        
00554     int resync_marker;               
00555     int low_delay;                   
00556     int vo_type;
00557     int vol_control_parameters;      
00558     int intra_dc_threshold;          
00559     int use_intra_dc_vlc;
00560     PutBitContext tex_pb;            
00561     PutBitContext pb2;               
00562     int mpeg_quant;
00563     int t_frame;                       
00564     int padding_bug_score;             
00565     int cplx_estimation_trash_i;
00566     int cplx_estimation_trash_p;
00567     int cplx_estimation_trash_b;
00568 
00569     /* divx specific, used to workaround (many) bugs in divx5 */
00570     int divx_version;
00571     int divx_build;
00572     int divx_packed;
00573     uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
00574     int bitstream_buffer_size;
00575     unsigned int allocated_bitstream_buffer_size;
00576 
00577     int xvid_build;
00578 
00579     /* lavc specific stuff, used to workaround bugs in libavcodec */
00580     int lavc_build;
00581 
00582     /* RV10 specific */
00583     int rv10_version; 
00584     int rv10_first_dc_coded[3];
00585     int orig_width, orig_height;
00586 
00587     /* MJPEG specific */
00588     struct MJpegContext *mjpeg_ctx;
00589     int mjpeg_vsample[3];       
00590     int mjpeg_hsample[3];       
00591 
00592     /* MSMPEG4 specific */
00593     int mv_table_index;
00594     int rl_table_index;
00595     int rl_chroma_table_index;
00596     int dc_table_index;
00597     int use_skip_mb_code;
00598     int slice_height;      
00599     int first_slice_line;  
00600     int flipflop_rounding;
00601     int msmpeg4_version;   
00602     int per_mb_rl_table;
00603     int esc3_level_length;
00604     int esc3_run_length;
00606     int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
00607     int inter_intra_pred;
00608     int mspel;
00609 
00610     /* decompression specific */
00611     GetBitContext gb;
00612 
00613     /* Mpeg1 specific */
00614     int gop_picture_number;  
00615     int last_mv_dir;         
00616     int broken_link;         
00617     uint8_t *vbv_delay_ptr;  
00618 
00619     /* MPEG-2-specific - I wished not to have to support this mess. */
00620     int progressive_sequence;
00621     int mpeg_f_code[2][2];
00622     int picture_structure;
00623 /* picture type */
00624 #define PICT_TOP_FIELD     1
00625 #define PICT_BOTTOM_FIELD  2
00626 #define PICT_FRAME         3
00627 
00628     int intra_dc_precision;
00629     int frame_pred_frame_dct;
00630     int top_field_first;
00631     int concealment_motion_vectors;
00632     int q_scale_type;
00633     int intra_vlc_format;
00634     int alternate_scan;
00635     int repeat_first_field;
00636     int chroma_420_type;
00637     int chroma_format;
00638 #define CHROMA_420 1
00639 #define CHROMA_422 2
00640 #define CHROMA_444 3
00641     int chroma_x_shift;//depend on pix_format, that depend on chroma_format
00642     int chroma_y_shift;
00643 
00644     int progressive_frame;
00645     int full_pel[2];
00646     int interlaced_dct;
00647     int first_slice;
00648     int first_field;         
00649 
00650     /* RTP specific */
00651     int rtp_mode;
00652 
00653     uint8_t *ptr_lastgob;
00654     int swap_uv;             //vcr2 codec is an MPEG-2 variant with U and V swapped
00655     DCTELEM (*pblocks[12])[64];
00656 
00657     DCTELEM (*block)[64]; 
00658     DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
00659     int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
00660 #define SLICE_OK         0
00661 #define SLICE_ERROR     -1
00662 #define SLICE_END       -2 ///<end marker found
00663 #define SLICE_NOEND     -3 ///<no end marker or error found but mb count exceeded
00664 
00665     void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
00666                            DCTELEM *block/*align 16*/, int n, int qscale);
00667     void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
00668                            DCTELEM *block/*align 16*/, int n, int qscale);
00669     void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
00670                            DCTELEM *block/*align 16*/, int n, int qscale);
00671     void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
00672                            DCTELEM *block/*align 16*/, int n, int qscale);
00673     void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
00674                            DCTELEM *block/*align 16*/, int n, int qscale);
00675     void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
00676                            DCTELEM *block/*align 16*/, int n, int qscale);
00677     void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
00678                            DCTELEM *block/*align 16*/, int n, int qscale);
00679     void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
00680                            DCTELEM *block/*align 16*/, int n, int qscale);
00681     void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
00682                            DCTELEM *block/*align 16*/, int n, int qscale);
00683     void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
00684                            DCTELEM *block/*align 16*/, int n, int qscale);
00685     int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
00686     int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
00687     void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
00688 } MpegEncContext;
00689 
00690 #define REBASE_PICTURE(pic, new_ctx, old_ctx) (pic ? \
00691     (pic >= old_ctx->picture && pic < old_ctx->picture+old_ctx->picture_count ?\
00692         &new_ctx->picture[pic - old_ctx->picture] : pic - (Picture*)old_ctx + (Picture*)new_ctx)\
00693     : NULL)
00694 
00695 void MPV_decode_defaults(MpegEncContext *s);
00696 int MPV_common_init(MpegEncContext *s);
00697 void MPV_common_end(MpegEncContext *s);
00698 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
00699 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
00700 void MPV_frame_end(MpegEncContext *s);
00701 int MPV_encode_init(AVCodecContext *avctx);
00702 int MPV_encode_end(AVCodecContext *avctx);
00703 int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
00704 void MPV_common_init_mmx(MpegEncContext *s);
00705 void MPV_common_init_axp(MpegEncContext *s);
00706 void MPV_common_init_mlib(MpegEncContext *s);
00707 void MPV_common_init_mmi(MpegEncContext *s);
00708 void MPV_common_init_arm(MpegEncContext *s);
00709 void MPV_common_init_altivec(MpegEncContext *s);
00710 void MPV_common_init_bfin(MpegEncContext *s);
00711 void ff_clean_intra_table_entries(MpegEncContext *s);
00712 void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
00713 void ff_mpeg_flush(AVCodecContext *avctx);
00714 void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
00715 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
00716 void ff_release_unused_pictures(MpegEncContext *s, int remove_current);
00717 int ff_find_unused_picture(MpegEncContext *s, int shared);
00718 void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
00719 void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
00720 int MPV_lowest_referenced_row(MpegEncContext *s, int dir);
00721 void MPV_report_decode_progress(MpegEncContext *s);
00722 int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
00723 const uint8_t *ff_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
00724 void ff_set_qscale(MpegEncContext * s, int qscale);
00725 
00726 void ff_er_frame_start(MpegEncContext *s);
00727 void ff_er_frame_end(MpegEncContext *s);
00728 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
00729 
00730 int ff_dct_common_init(MpegEncContext *s);
00731 void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
00732                        const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
00733 
00734 void ff_init_block_index(MpegEncContext *s);
00735 void ff_copy_picture(Picture *dst, Picture *src);
00736 
00741 int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
00742 
00743 extern const enum PixelFormat ff_pixfmt_list_420[];
00744 extern const enum PixelFormat ff_hwaccel_pixfmt_list_420[];
00745 
00746 static inline void ff_update_block_index(MpegEncContext *s){
00747     const int block_size= 8>>s->avctx->lowres;
00748 
00749     s->block_index[0]+=2;
00750     s->block_index[1]+=2;
00751     s->block_index[2]+=2;
00752     s->block_index[3]+=2;
00753     s->block_index[4]++;
00754     s->block_index[5]++;
00755     s->dest[0]+= 2*block_size;
00756     s->dest[1]+= block_size;
00757     s->dest[2]+= block_size;
00758 }
00759 
00760 static inline int get_bits_diff(MpegEncContext *s){
00761     const int bits= put_bits_count(&s->pb);
00762     const int last= s->last_bits;
00763 
00764     s->last_bits = bits;
00765 
00766     return bits - last;
00767 }
00768 
00769 static inline int ff_h263_round_chroma(int x){
00770     static const uint8_t h263_chroma_roundtab[16] = {
00771     //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
00772         0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
00773     };
00774     return h263_chroma_roundtab[x & 0xf] + (x >> 3);
00775 }
00776 
00777 /* motion_est.c */
00778 void ff_estimate_p_frame_motion(MpegEncContext * s,
00779                              int mb_x, int mb_y);
00780 void ff_estimate_b_frame_motion(MpegEncContext * s,
00781                              int mb_x, int mb_y);
00782 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
00783 void ff_fix_long_p_mvs(MpegEncContext * s);
00784 void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
00785                      int16_t (*mv_table)[2], int f_code, int type, int truncate);
00786 int ff_init_me(MpegEncContext *s);
00787 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
00788 int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
00789                              int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
00790                              int ref_mv_scale, int size, int h);
00791 int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
00792                                int ref_index, int size, int h, int add_rate);
00793 
00794 /* mpeg12.c */
00795 extern const uint8_t ff_mpeg1_dc_scale_table[128];
00796 extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
00797 
00798 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
00799 void mpeg1_encode_mb(MpegEncContext *s,
00800                      DCTELEM block[6][64],
00801                      int motion_x, int motion_y);
00802 void ff_mpeg1_encode_init(MpegEncContext *s);
00803 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
00804 void ff_mpeg1_clean_buffers(MpegEncContext *s);
00805 int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s);
00806 
00807 extern const uint8_t ff_aic_dc_scale_table[32];
00808 extern const uint8_t ff_h263_chroma_qscale_table[32];
00809 extern const uint8_t ff_h263_loop_filter_strength[32];
00810 
00811 /* h261.c */
00812 void ff_h261_loop_filter(MpegEncContext *s);
00813 void ff_h261_reorder_mb_index(MpegEncContext* s);
00814 void ff_h261_encode_mb(MpegEncContext *s,
00815                     DCTELEM block[6][64],
00816                     int motion_x, int motion_y);
00817 void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
00818 void ff_h261_encode_init(MpegEncContext *s);
00819 int ff_h261_get_picture_format(int width, int height);
00820 
00821 
00822 /* rv10.c */
00823 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
00824 int rv_decode_dc(MpegEncContext *s, int n);
00825 void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
00826 
00827 
00828 /* msmpeg4.c */
00829 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
00830 void msmpeg4_encode_ext_header(MpegEncContext * s);
00831 void msmpeg4_encode_mb(MpegEncContext * s,
00832                        DCTELEM block[6][64],
00833                        int motion_x, int motion_y);
00834 int msmpeg4_decode_picture_header(MpegEncContext * s);
00835 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
00836 int ff_msmpeg4_decode_init(AVCodecContext *avctx);
00837 void ff_msmpeg4_encode_init(MpegEncContext *s);
00838 int ff_wmv2_decode_picture_header(MpegEncContext * s);
00839 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
00840 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
00841 void ff_mspel_motion(MpegEncContext *s,
00842                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00843                                uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
00844                                int motion_x, int motion_y, int h);
00845 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
00846 void ff_wmv2_encode_mb(MpegEncContext * s,
00847                        DCTELEM block[6][64],
00848                        int motion_x, int motion_y);
00849 
00850 #endif /* AVCODEC_MPEGVIDEO_H */

Generated on Wed Apr 11 2012 07:31:34 for FFmpeg by  doxygen 1.7.1