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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 "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 
00082 typedef struct Picture{
00083     FF_COMMON_FRAME
00084 
00088     uint8_t *interpolated[3];
00089     int16_t (*motion_val_base[2])[2];
00090     uint32_t *mb_type_base;
00091 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type
00092 #define IS_INTRA4x4(a)   ((a)&MB_TYPE_INTRA4x4)
00093 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
00094 #define IS_PCM(a)        ((a)&MB_TYPE_INTRA_PCM)
00095 #define IS_INTRA(a)      ((a)&7)
00096 #define IS_INTER(a)      ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
00097 #define IS_SKIP(a)       ((a)&MB_TYPE_SKIP)
00098 #define IS_INTRA_PCM(a)  ((a)&MB_TYPE_INTRA_PCM)
00099 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
00100 #define IS_DIRECT(a)     ((a)&MB_TYPE_DIRECT2)
00101 #define IS_GMC(a)        ((a)&MB_TYPE_GMC)
00102 #define IS_16X16(a)      ((a)&MB_TYPE_16x16)
00103 #define IS_16X8(a)       ((a)&MB_TYPE_16x8)
00104 #define IS_8X16(a)       ((a)&MB_TYPE_8x16)
00105 #define IS_8X8(a)        ((a)&MB_TYPE_8x8)
00106 #define IS_SUB_8X8(a)    ((a)&MB_TYPE_16x16) //note reused
00107 #define IS_SUB_8X4(a)    ((a)&MB_TYPE_16x8)  //note reused
00108 #define IS_SUB_4X8(a)    ((a)&MB_TYPE_8x16)  //note reused
00109 #define IS_SUB_4X4(a)    ((a)&MB_TYPE_8x8)   //note reused
00110 #define IS_ACPRED(a)     ((a)&MB_TYPE_ACPRED)
00111 #define IS_QUANT(a)      ((a)&MB_TYPE_QUANT)
00112 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
00113 #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
00114 #define HAS_CBP(a)        ((a)&MB_TYPE_CBP)
00115 
00116     int field_poc[2];           
00117     int poc;                    
00118     int frame_num;              
00119     int mmco_reset;             
00120     int pic_id;                 
00122     int long_ref;               
00123     int ref_poc[2][2][16];      
00124     int ref_count[2][2];        
00125     int mbaff;                  
00126 
00127     int mb_var_sum;             
00128     int mc_mb_var_sum;          
00129     uint16_t *mb_var;           
00130     uint16_t *mc_mb_var;        
00131     uint8_t *mb_mean;           
00132     int32_t *mb_cmp_score;      
00133     int b_frame_score;          /* */
00134 } Picture;
00135 
00136 struct MpegEncContext;
00137 
00141 typedef struct MotionEstContext{
00142     AVCodecContext *avctx;
00143     int skip;                          
00144     int co_located_mv[4][2];           
00145     int direct_basis_mv[4][2];
00146     uint8_t *scratchpad;               
00147     uint8_t *best_mb;
00148     uint8_t *temp_mb[2];
00149     uint8_t *temp;
00150     int best_bits;
00151     uint32_t *map;                     
00152     uint32_t *score_map;               
00153     int map_generation;
00154     int pre_penalty_factor;
00155     int penalty_factor;                
00160     int sub_penalty_factor;
00161     int mb_penalty_factor;
00162     int flags;
00163     int sub_flags;
00164     int mb_flags;
00165     int pre_pass;                      
00166     int dia_size;
00167     int xmin;
00168     int xmax;
00169     int ymin;
00170     int ymax;
00171     int pred_x;
00172     int pred_y;
00173     uint8_t *src[4][4];
00174     uint8_t *ref[4][4];
00175     int stride;
00176     int uvstride;
00177     /* temp variables for picture complexity calculation */
00178     int mc_mb_var_sum_temp;
00179     int mb_var_sum_temp;
00180     int scene_change_score;
00181 /*    cmp, chroma_cmp;*/
00182     op_pixels_func (*hpel_put)[4];
00183     op_pixels_func (*hpel_avg)[4];
00184     qpel_mc_func (*qpel_put)[16];
00185     qpel_mc_func (*qpel_avg)[16];
00186     uint8_t (*mv_penalty)[MAX_MV*2+1];  
00187     uint8_t *current_mv_penalty;
00188     int (*sub_motion_search)(struct MpegEncContext * s,
00189                                   int *mx_ptr, int *my_ptr, int dmin,
00190                                   int src_index, int ref_index,
00191                                   int size, int h);
00192 }MotionEstContext;
00193 
00197 typedef struct MpegEncContext {
00198     struct AVCodecContext *avctx;
00199     /* the following parameters must be initialized before encoding */
00200     int width, height;
00201     int gop_size;
00202     int intra_only;   
00203     int bit_rate;     
00204     enum OutputFormat out_format; 
00205     int h263_pred;    
00206     int pb_frame;     
00207 
00208 /* the following codec id fields are deprecated in favor of codec_id */
00209     int h263_plus;    
00210     int h263_msmpeg4; 
00211     int h263_flv;     
00212 
00213     enum CodecID codec_id;     /* see CODEC_ID_xxx */
00214     int fixed_qscale; 
00215     int encoding;     
00216     int flags;        
00217     int flags2;       
00218     int max_b_frames; 
00219     int luma_elim_threshold;
00220     int chroma_elim_threshold;
00221     int strict_std_compliance; 
00222     int workaround_bugs;       
00223     int codec_tag;             
00224     int stream_codec_tag;      
00225     /* the following fields are managed internally by the encoder */
00226 
00228     PutBitContext pb;
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 start_mb_y;            
00251     int end_mb_y;              
00252     struct MpegEncContext *thread_context[MAX_THREADS];
00253 
00258     Picture last_picture;
00259 
00264     Picture next_picture;
00265 
00270     Picture new_picture;
00271 
00276     Picture current_picture;    
00277 
00278     Picture *last_picture_ptr;     
00279     Picture *next_picture_ptr;     
00280     Picture *current_picture_ptr;  
00281     uint8_t *visualization_buffer[3]; //< temporary buffer vor MV visualization
00282     int last_dc[3];                
00283     int16_t *dc_val_base;
00284     int16_t *dc_val[3];            
00285     int16_t dc_cache[4*5];
00286     int y_dc_scale, c_dc_scale;
00287     const uint8_t *y_dc_scale_table;     
00288     const uint8_t *c_dc_scale_table;     
00289     const uint8_t *chroma_qscale_table;  
00290     uint8_t *coded_block_base;
00291     uint8_t *coded_block;          
00292     int16_t (*ac_val_base)[16];
00293     int16_t (*ac_val[3])[16];      
00294     int ac_pred;
00295     uint8_t *prev_pict_types;     
00296 #define PREV_PICT_TYPES_BUFFER_SIZE 256
00297     int mb_skipped;                
00298     uint8_t *mbskip_table;        
00300     uint8_t *mbintra_table;       
00301     uint8_t *cbp_table;           
00302     uint8_t *pred_dir_table;      
00303     uint8_t *allocated_edge_emu_buffer;
00304     uint8_t *edge_emu_buffer;     
00305     uint8_t *rd_scratchpad;       
00306     uint8_t *obmc_scratchpad;
00307     uint8_t *b_scratchpad;        
00308 
00309     int qscale;                 
00310     int chroma_qscale;          
00311     unsigned int lambda;        
00312     unsigned int lambda2;       
00313     int *lambda_table;
00314     int adaptive_quant;         
00315     int dquant;                 
00316     int closed_gop;             
00317     int pict_type;              
00318     int last_pict_type; //FIXME removes
00319     int last_non_b_pict_type;   
00320     int dropable;
00321     int frame_rate_index;
00322     int last_lambda_for[5];     
00323     int skipdct;                
00324 
00325     /* motion compensation */
00326     int unrestricted_mv;        
00327     int h263_long_vectors;      
00328     int decode;                 
00329 
00330     DSPContext dsp;             
00331     int f_code;                 
00332     int b_code;                 
00333     int16_t (*p_mv_table_base)[2];
00334     int16_t (*b_forw_mv_table_base)[2];
00335     int16_t (*b_back_mv_table_base)[2];
00336     int16_t (*b_bidir_forw_mv_table_base)[2];
00337     int16_t (*b_bidir_back_mv_table_base)[2];
00338     int16_t (*b_direct_mv_table_base)[2];
00339     int16_t (*p_field_mv_table_base[2][2])[2];
00340     int16_t (*b_field_mv_table_base[2][2][2])[2];
00341     int16_t (*p_mv_table)[2];            
00342     int16_t (*b_forw_mv_table)[2];       
00343     int16_t (*b_back_mv_table)[2];       
00344     int16_t (*b_bidir_forw_mv_table)[2]; 
00345     int16_t (*b_bidir_back_mv_table)[2]; 
00346     int16_t (*b_direct_mv_table)[2];     
00347     int16_t (*p_field_mv_table[2][2])[2];   
00348     int16_t (*b_field_mv_table[2][2][2])[2];
00349     uint8_t (*p_field_select_table[2]);
00350     uint8_t (*b_field_select_table[2][2]);
00351     int me_method;                       
00352     int mv_dir;
00353 #define MV_DIR_FORWARD   1
00354 #define MV_DIR_BACKWARD  2
00355 #define MV_DIRECT        4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
00356     int mv_type;
00357 #define MV_TYPE_16X16       0   ///< 1 vector for the whole mb
00358 #define MV_TYPE_8X8         1   ///< 4 vectors (h263, mpeg4 4MV)
00359 #define MV_TYPE_16X8        2   ///< 2 vectors, one per 16x8 block
00360 #define MV_TYPE_FIELD       3   ///< 2 vectors, one per field
00361 #define MV_TYPE_DMV         4   ///< 2 vectors, special mpeg2 Dual Prime Vectors
00362 
00367     int mv[2][4][2];
00368     int field_select[2][2];
00369     int last_mv[2][2][2];             
00370     uint8_t *fcode_tab;               
00371     int16_t direct_scale_mv[2][64];   
00372 
00373     MotionEstContext me;
00374 
00375     int no_rounding;  
00378     int hurry_up;     
00381     /* macroblock layer */
00382     int mb_x, mb_y;
00383     int mb_skip_run;
00384     int mb_intra;
00385     uint16_t *mb_type;           
00386 #define CANDIDATE_MB_TYPE_INTRA    0x01
00387 #define CANDIDATE_MB_TYPE_INTER    0x02
00388 #define CANDIDATE_MB_TYPE_INTER4V  0x04
00389 #define CANDIDATE_MB_TYPE_SKIPPED   0x08
00390 //#define MB_TYPE_GMC      0x10
00391 
00392 #define CANDIDATE_MB_TYPE_DIRECT   0x10
00393 #define CANDIDATE_MB_TYPE_FORWARD  0x20
00394 #define CANDIDATE_MB_TYPE_BACKWARD 0x40
00395 #define CANDIDATE_MB_TYPE_BIDIR    0x80
00396 
00397 #define CANDIDATE_MB_TYPE_INTER_I    0x100
00398 #define CANDIDATE_MB_TYPE_FORWARD_I  0x200
00399 #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
00400 #define CANDIDATE_MB_TYPE_BIDIR_I    0x800
00401 
00402 #define CANDIDATE_MB_TYPE_DIRECT0    0x1000
00403 
00404     int block_index[6]; 
00405     int block_wrap[6];
00406     uint8_t *dest[3];
00407 
00408     int *mb_index2xy;        
00409 
00411     uint16_t intra_matrix[64];
00412     uint16_t chroma_intra_matrix[64];
00413     uint16_t inter_matrix[64];
00414     uint16_t chroma_inter_matrix[64];
00415 #define QUANT_BIAS_SHIFT 8
00416     int intra_quant_bias;    
00417     int inter_quant_bias;    
00418     int min_qcoeff;          
00419     int max_qcoeff;          
00420     int ac_esc_length;       
00421     uint8_t *intra_ac_vlc_length;
00422     uint8_t *intra_ac_vlc_last_length;
00423     uint8_t *inter_ac_vlc_length;
00424     uint8_t *inter_ac_vlc_last_length;
00425     uint8_t *luma_dc_vlc_length;
00426     uint8_t *chroma_dc_vlc_length;
00427 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
00428 
00429     int coded_score[8];
00430 
00432     int (*q_intra_matrix)[64];
00433     int (*q_inter_matrix)[64];
00435     uint16_t (*q_intra_matrix16)[2][64];
00436     uint16_t (*q_inter_matrix16)[2][64];
00437     int block_last_index[12];  
00438     /* scantables */
00439     ScanTable intra_scantable;
00440     ScanTable intra_h_scantable;
00441     ScanTable intra_v_scantable;
00442     ScanTable inter_scantable; 
00443 
00444     /* noise reduction */
00445     int (*dct_error_sum)[64];
00446     int dct_count[2];
00447     uint16_t (*dct_offset)[64];
00448 
00449     void *opaque;              
00450 
00451     /* bit rate control */
00452     int64_t wanted_bits;
00453     int64_t total_bits;
00454     int frame_bits;                
00455     int next_lambda;               
00456     RateControlContext rc_context; 
00457 
00458     /* statistics, used for 2-pass encoding */
00459     int mv_bits;
00460     int header_bits;
00461     int i_tex_bits;
00462     int p_tex_bits;
00463     int i_count;
00464     int f_count;
00465     int b_count;
00466     int skip_count;
00467     int misc_bits; 
00468     int last_bits; 
00469 
00470     /* error concealment / resync */
00471     int error_count;
00472     uint8_t *error_status_table;       
00473 #define VP_START            1          ///< current MB is the first after a resync marker
00474 #define AC_ERROR            2
00475 #define DC_ERROR            4
00476 #define MV_ERROR            8
00477 #define AC_END              16
00478 #define DC_END              32
00479 #define MV_END              64
00480 //FIXME some prefix?
00481 
00482     int resync_mb_x;                 
00483     int resync_mb_y;                 
00484     GetBitContext last_resync_gb;    
00485     int mb_num_left;                 
00486     int next_p_frame_damaged;        
00487     int error_recognition;
00488 
00489     ParseContext parse_context;
00490 
00491     /* H.263 specific */
00492     int gob_index;
00493     int obmc;                       
00494     int showed_packed_warning;      
00495 
00496     /* H.263+ specific */
00497     int umvplus;                    
00498     int h263_aic;                   
00499     int h263_aic_dir;               
00500     int h263_slice_structured;
00501     int alt_inter_vlc;              
00502     int modified_quant;
00503     int loop_filter;
00504     int custom_pcf;
00505 
00506     /* mpeg4 specific */
00507     int time_increment_bits;        
00508     int last_time_base;
00509     int time_base;                  
00510     int64_t time;                   
00511     int64_t last_non_b_time;
00512     uint16_t pp_time;               
00513     uint16_t pb_time;               
00514     uint16_t pp_field_time;
00515     uint16_t pb_field_time;         
00516     int shape;
00517     int vol_sprite_usage;
00518     int sprite_width;
00519     int sprite_height;
00520     int sprite_left;
00521     int sprite_top;
00522     int sprite_brightness_change;
00523     int num_sprite_warping_points;
00524     int real_sprite_warping_points;
00525     uint16_t sprite_traj[4][2];      
00526     int sprite_offset[2][2];         
00527     int sprite_delta[2][2];          
00528     int sprite_shift[2];             
00529     int mcsel;
00530     int quant_precision;
00531     int quarter_sample;              
00532     int scalability;
00533     int hierachy_type;
00534     int enhancement_type;
00535     int new_pred;
00536     int reduced_res_vop;
00537     int aspect_ratio_info; //FIXME remove
00538     int sprite_warping_accuracy;
00539     int low_latency_sprite;
00540     int data_partitioning;           
00541     int partitioned_frame;           
00542     int rvlc;                        
00543     int resync_marker;               
00544     int low_delay;                   
00545     int vo_type;
00546     int vol_control_parameters;      
00547     int intra_dc_threshold;          
00548     int use_intra_dc_vlc;
00549     PutBitContext tex_pb;            
00550     PutBitContext pb2;               
00551     int mpeg_quant;
00552     int t_frame;                       
00553     int padding_bug_score;             
00554     int cplx_estimation_trash_i;
00555     int cplx_estimation_trash_p;
00556     int cplx_estimation_trash_b;
00557 
00558     /* divx specific, used to workaround (many) bugs in divx5 */
00559     int divx_version;
00560     int divx_build;
00561     int divx_packed;
00562     uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
00563     int bitstream_buffer_size;
00564     unsigned int allocated_bitstream_buffer_size;
00565 
00566     int xvid_build;
00567 
00568     /* lavc specific stuff, used to workaround bugs in libavcodec */
00569     int lavc_build;
00570 
00571     /* RV10 specific */
00572     int rv10_version; 
00573     int rv10_first_dc_coded[3];
00574     int orig_width, orig_height;
00575 
00576     /* MJPEG specific */
00577     struct MJpegContext *mjpeg_ctx;
00578     int mjpeg_vsample[3];       
00579     int mjpeg_hsample[3];       
00580 
00581     /* MSMPEG4 specific */
00582     int mv_table_index;
00583     int rl_table_index;
00584     int rl_chroma_table_index;
00585     int dc_table_index;
00586     int use_skip_mb_code;
00587     int slice_height;      
00588     int first_slice_line;  
00589     int flipflop_rounding;
00590     int msmpeg4_version;   
00591     int per_mb_rl_table;
00592     int esc3_level_length;
00593     int esc3_run_length;
00595     int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
00596     int inter_intra_pred;
00597     int mspel;
00598 
00599     /* decompression specific */
00600     GetBitContext gb;
00601 
00602     /* Mpeg1 specific */
00603     int gop_picture_number;  
00604     int last_mv_dir;         
00605     int broken_link;         
00606     uint8_t *vbv_delay_ptr;  
00607 
00608     /* MPEG-2-specific - I wished not to have to support this mess. */
00609     int progressive_sequence;
00610     int mpeg_f_code[2][2];
00611     int picture_structure;
00612 /* picture type */
00613 #define PICT_TOP_FIELD     1
00614 #define PICT_BOTTOM_FIELD  2
00615 #define PICT_FRAME         3
00616 
00617     int intra_dc_precision;
00618     int frame_pred_frame_dct;
00619     int top_field_first;
00620     int concealment_motion_vectors;
00621     int q_scale_type;
00622     int intra_vlc_format;
00623     int alternate_scan;
00624     int repeat_first_field;
00625     int chroma_420_type;
00626     int chroma_format;
00627 #define CHROMA_420 1
00628 #define CHROMA_422 2
00629 #define CHROMA_444 3
00630     int chroma_x_shift;//depend on pix_format, that depend on chroma_format
00631     int chroma_y_shift;
00632 
00633     int progressive_frame;
00634     int full_pel[2];
00635     int interlaced_dct;
00636     int first_slice;
00637     int first_field;         
00638 
00639     /* RTP specific */
00640     int rtp_mode;
00641 
00642     uint8_t *ptr_lastgob;
00643     int swap_uv;             //vcr2 codec is an MPEG-2 variant with U and V swapped
00644     DCTELEM (*pblocks[12])[64];
00645 
00646     DCTELEM (*block)[64]; 
00647     DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
00648     int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
00649 #define SLICE_OK         0
00650 #define SLICE_ERROR     -1
00651 #define SLICE_END       -2 ///<end marker found
00652 #define SLICE_NOEND     -3 ///<no end marker or error found but mb count exceeded
00653 
00654     void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
00655                            DCTELEM *block/*align 16*/, int n, int qscale);
00656     void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
00657                            DCTELEM *block/*align 16*/, int n, int qscale);
00658     void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
00659                            DCTELEM *block/*align 16*/, int n, int qscale);
00660     void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
00661                            DCTELEM *block/*align 16*/, int n, int qscale);
00662     void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
00663                            DCTELEM *block/*align 16*/, int n, int qscale);
00664     void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
00665                            DCTELEM *block/*align 16*/, int n, int qscale);
00666     void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
00667                            DCTELEM *block/*align 16*/, int n, int qscale);
00668     void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
00669                            DCTELEM *block/*align 16*/, int n, int qscale);
00670     void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
00671                            DCTELEM *block/*align 16*/, int n, int qscale);
00672     void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
00673                            DCTELEM *block/*align 16*/, int n, int qscale);
00674     int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
00675     int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
00676     void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
00677 } MpegEncContext;
00678 
00679 
00680 void MPV_decode_defaults(MpegEncContext *s);
00681 int MPV_common_init(MpegEncContext *s);
00682 void MPV_common_end(MpegEncContext *s);
00683 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
00684 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
00685 void MPV_frame_end(MpegEncContext *s);
00686 int MPV_encode_init(AVCodecContext *avctx);
00687 int MPV_encode_end(AVCodecContext *avctx);
00688 int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
00689 void MPV_common_init_mmx(MpegEncContext *s);
00690 void MPV_common_init_axp(MpegEncContext *s);
00691 void MPV_common_init_mlib(MpegEncContext *s);
00692 void MPV_common_init_mmi(MpegEncContext *s);
00693 void MPV_common_init_arm(MpegEncContext *s);
00694 void MPV_common_init_altivec(MpegEncContext *s);
00695 void MPV_common_init_bfin(MpegEncContext *s);
00696 void ff_clean_intra_table_entries(MpegEncContext *s);
00697 void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
00698 void ff_mpeg_flush(AVCodecContext *avctx);
00699 void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
00700 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
00701 int ff_find_unused_picture(MpegEncContext *s, int shared);
00702 void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
00703 void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
00704 const uint8_t *ff_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
00705 void ff_set_qscale(MpegEncContext * s, int qscale);
00706 
00707 void ff_er_frame_start(MpegEncContext *s);
00708 void ff_er_frame_end(MpegEncContext *s);
00709 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
00710 
00711 int ff_dct_common_init(MpegEncContext *s);
00712 void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
00713                        const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
00714 
00715 void ff_init_block_index(MpegEncContext *s);
00716 void ff_copy_picture(Picture *dst, Picture *src);
00717 
00722 int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
00723 
00724 extern const enum PixelFormat ff_pixfmt_list_420[];
00725 extern const enum PixelFormat ff_hwaccel_pixfmt_list_420[];
00726 
00727 static inline void ff_update_block_index(MpegEncContext *s){
00728     const int block_size= 8>>s->avctx->lowres;
00729 
00730     s->block_index[0]+=2;
00731     s->block_index[1]+=2;
00732     s->block_index[2]+=2;
00733     s->block_index[3]+=2;
00734     s->block_index[4]++;
00735     s->block_index[5]++;
00736     s->dest[0]+= 2*block_size;
00737     s->dest[1]+= block_size;
00738     s->dest[2]+= block_size;
00739 }
00740 
00741 static inline int get_bits_diff(MpegEncContext *s){
00742     const int bits= put_bits_count(&s->pb);
00743     const int last= s->last_bits;
00744 
00745     s->last_bits = bits;
00746 
00747     return bits - last;
00748 }
00749 
00750 static inline int ff_h263_round_chroma(int x){
00751     static const uint8_t h263_chroma_roundtab[16] = {
00752     //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
00753         0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
00754     };
00755     return h263_chroma_roundtab[x & 0xf] + (x >> 3);
00756 }
00757 
00758 /* motion_est.c */
00759 void ff_estimate_p_frame_motion(MpegEncContext * s,
00760                              int mb_x, int mb_y);
00761 void ff_estimate_b_frame_motion(MpegEncContext * s,
00762                              int mb_x, int mb_y);
00763 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
00764 void ff_fix_long_p_mvs(MpegEncContext * s);
00765 void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
00766                      int16_t (*mv_table)[2], int f_code, int type, int truncate);
00767 int ff_init_me(MpegEncContext *s);
00768 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
00769 int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
00770                              int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
00771                              int ref_mv_scale, int size, int h);
00772 int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
00773                                int ref_index, int size, int h, int add_rate);
00774 
00775 /* mpeg12.c */
00776 extern const uint8_t ff_mpeg1_dc_scale_table[128];
00777 extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
00778 
00779 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
00780 void mpeg1_encode_mb(MpegEncContext *s,
00781                      DCTELEM block[6][64],
00782                      int motion_x, int motion_y);
00783 void ff_mpeg1_encode_init(MpegEncContext *s);
00784 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
00785 void ff_mpeg1_clean_buffers(MpegEncContext *s);
00786 int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s);
00787 
00788 extern const uint8_t ff_aic_dc_scale_table[32];
00789 extern const uint8_t ff_h263_chroma_qscale_table[32];
00790 extern const uint8_t ff_h263_loop_filter_strength[32];
00791 
00792 /* h261.c */
00793 void ff_h261_loop_filter(MpegEncContext *s);
00794 void ff_h261_reorder_mb_index(MpegEncContext* s);
00795 void ff_h261_encode_mb(MpegEncContext *s,
00796                     DCTELEM block[6][64],
00797                     int motion_x, int motion_y);
00798 void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
00799 void ff_h261_encode_init(MpegEncContext *s);
00800 int ff_h261_get_picture_format(int width, int height);
00801 
00802 
00803 /* rv10.c */
00804 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
00805 int rv_decode_dc(MpegEncContext *s, int n);
00806 void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
00807 
00808 
00809 /* msmpeg4.c */
00810 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
00811 void msmpeg4_encode_ext_header(MpegEncContext * s);
00812 void msmpeg4_encode_mb(MpegEncContext * s,
00813                        DCTELEM block[6][64],
00814                        int motion_x, int motion_y);
00815 int msmpeg4_decode_picture_header(MpegEncContext * s);
00816 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
00817 int ff_msmpeg4_decode_init(AVCodecContext *avctx);
00818 void ff_msmpeg4_encode_init(MpegEncContext *s);
00819 int ff_wmv2_decode_picture_header(MpegEncContext * s);
00820 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
00821 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
00822 void ff_mspel_motion(MpegEncContext *s,
00823                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00824                                uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
00825                                int motion_x, int motion_y, int h);
00826 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
00827 void ff_wmv2_encode_mb(MpegEncContext * s,
00828                        DCTELEM block[6][64],
00829                        int motion_x, int motion_y);
00830 
00831 #endif /* AVCODEC_MPEGVIDEO_H */
00832 

Generated on Fri Sep 16 2011 17:17:40 for FFmpeg by  doxygen 1.7.1