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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 Libav.
00007  *
00008  * Libav 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  * Libav 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 Libav; 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 "avcodec.h"
00032 #include "dsputil.h"
00033 #include "get_bits.h"
00034 #include "put_bits.h"
00035 #include "ratecontrol.h"
00036 #include "parser.h"
00037 #include "mpeg12data.h"
00038 #include "rl.h"
00039 
00040 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
00041 
00042 enum OutputFormat {
00043     FMT_MPEG1,
00044     FMT_H261,
00045     FMT_H263,
00046     FMT_MJPEG,
00047     FMT_H264,
00048 };
00049 
00050 #define MPEG_BUF_SIZE (16 * 1024)
00051 
00052 #define QMAT_SHIFT_MMX 16
00053 #define QMAT_SHIFT 22
00054 
00055 #define MAX_FCODE 7
00056 #define MAX_MV 2048
00057 
00058 #define MAX_THREADS 16
00059 
00060 #define MAX_PICTURE_COUNT 32
00061 
00062 #define ME_MAP_SIZE 64
00063 #define ME_MAP_SHIFT 3
00064 #define ME_MAP_MV_BITS 11
00065 
00066 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
00067 
00068 #define INPLACE_OFFSET 16
00069 
00070 /* Start codes. */
00071 #define SEQ_END_CODE            0x000001b7
00072 #define SEQ_START_CODE          0x000001b3
00073 #define GOP_START_CODE          0x000001b8
00074 #define PICTURE_START_CODE      0x00000100
00075 #define SLICE_MIN_START_CODE    0x00000101
00076 #define SLICE_MAX_START_CODE    0x000001af
00077 #define EXT_START_CODE          0x000001b5
00078 #define USER_START_CODE         0x000001b2
00079 
00080 struct MpegEncContext;
00081 
00085 typedef struct Picture{
00086     struct AVFrame f;
00087 
00091     uint8_t *interpolated[3];
00092     int8_t *qscale_table_base;
00093     int16_t (*motion_val_base[2])[2];
00094     uint32_t *mb_type_base;
00095 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type
00096 #define IS_INTRA4x4(a)   ((a)&MB_TYPE_INTRA4x4)
00097 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
00098 #define IS_PCM(a)        ((a)&MB_TYPE_INTRA_PCM)
00099 #define IS_INTRA(a)      ((a)&7)
00100 #define IS_INTER(a)      ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
00101 #define IS_SKIP(a)       ((a)&MB_TYPE_SKIP)
00102 #define IS_INTRA_PCM(a)  ((a)&MB_TYPE_INTRA_PCM)
00103 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
00104 #define IS_DIRECT(a)     ((a)&MB_TYPE_DIRECT2)
00105 #define IS_GMC(a)        ((a)&MB_TYPE_GMC)
00106 #define IS_16X16(a)      ((a)&MB_TYPE_16x16)
00107 #define IS_16X8(a)       ((a)&MB_TYPE_16x8)
00108 #define IS_8X16(a)       ((a)&MB_TYPE_8x16)
00109 #define IS_8X8(a)        ((a)&MB_TYPE_8x8)
00110 #define IS_SUB_8X8(a)    ((a)&MB_TYPE_16x16) //note reused
00111 #define IS_SUB_8X4(a)    ((a)&MB_TYPE_16x8)  //note reused
00112 #define IS_SUB_4X8(a)    ((a)&MB_TYPE_8x16)  //note reused
00113 #define IS_SUB_4X4(a)    ((a)&MB_TYPE_8x8)   //note reused
00114 #define IS_ACPRED(a)     ((a)&MB_TYPE_ACPRED)
00115 #define IS_QUANT(a)      ((a)&MB_TYPE_QUANT)
00116 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
00117 #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
00118 #define HAS_CBP(a)        ((a)&MB_TYPE_CBP)
00119 
00120     int field_poc[2];           
00121     int poc;                    
00122     int frame_num;              
00123     int mmco_reset;             
00124     int pic_id;                 
00126     int long_ref;               
00127     int ref_poc[2][2][32];      
00128     int ref_count[2][2];        
00129     int mbaff;                  
00130     int field_picture;          
00131 
00132     int mb_var_sum;             
00133     int mc_mb_var_sum;          
00134     uint16_t *mb_var;           
00135     uint16_t *mc_mb_var;        
00136     uint8_t *mb_mean;           
00137     int32_t *mb_cmp_score;      
00138     int b_frame_score;          /* */
00139     struct MpegEncContext *owner2; 
00140 } Picture;
00141 
00145 typedef struct MotionEstContext{
00146     AVCodecContext *avctx;
00147     int skip;                          
00148     int co_located_mv[4][2];           
00149     int direct_basis_mv[4][2];
00150     uint8_t *scratchpad;               
00151     uint8_t *best_mb;
00152     uint8_t *temp_mb[2];
00153     uint8_t *temp;
00154     int best_bits;
00155     uint32_t *map;                     
00156     uint32_t *score_map;               
00157     unsigned map_generation;
00158     int pre_penalty_factor;
00159     int penalty_factor;                
00164     int sub_penalty_factor;
00165     int mb_penalty_factor;
00166     int flags;
00167     int sub_flags;
00168     int mb_flags;
00169     int pre_pass;                      
00170     int dia_size;
00171     int xmin;
00172     int xmax;
00173     int ymin;
00174     int ymax;
00175     int pred_x;
00176     int pred_y;
00177     uint8_t *src[4][4];
00178     uint8_t *ref[4][4];
00179     int stride;
00180     int uvstride;
00181     /* temp variables for picture complexity calculation */
00182     int mc_mb_var_sum_temp;
00183     int mb_var_sum_temp;
00184     int scene_change_score;
00185 /*    cmp, chroma_cmp;*/
00186     op_pixels_func (*hpel_put)[4];
00187     op_pixels_func (*hpel_avg)[4];
00188     qpel_mc_func (*qpel_put)[16];
00189     qpel_mc_func (*qpel_avg)[16];
00190     uint8_t (*mv_penalty)[MAX_MV*2+1];  
00191     uint8_t *current_mv_penalty;
00192     int (*sub_motion_search)(struct MpegEncContext * s,
00193                                   int *mx_ptr, int *my_ptr, int dmin,
00194                                   int src_index, int ref_index,
00195                                   int size, int h);
00196 }MotionEstContext;
00197 
00201 typedef struct MpegEncContext {
00202     AVClass *class;
00203     struct AVCodecContext *avctx;
00204     /* the following parameters must be initialized before encoding */
00205     int width, height;
00206     int gop_size;
00207     int intra_only;   
00208     int bit_rate;     
00209     enum OutputFormat out_format; 
00210     int h263_pred;    
00211     int pb_frame;     
00212 
00213 /* the following codec id fields are deprecated in favor of codec_id */
00214     int h263_plus;    
00215     int h263_flv;     
00216 
00217     enum CodecID codec_id;     /* see CODEC_ID_xxx */
00218     int fixed_qscale; 
00219     int encoding;     
00220     int flags;        
00221     int flags2;       
00222     int max_b_frames; 
00223     int luma_elim_threshold;
00224     int chroma_elim_threshold;
00225     int strict_std_compliance; 
00226     int workaround_bugs;       
00227     int codec_tag;             
00228     int stream_codec_tag;      
00229     /* the following fields are managed internally by the encoder */
00230 
00231     /* sequence parameters */
00232     int context_initialized;
00233     int input_picture_number;  
00234     int coded_picture_number;  
00235     int picture_number;       //FIXME remove, unclear definition
00236     int picture_in_gop_number; 
00237     int mb_width, mb_height;   
00238     int mb_stride;             
00239     int b8_stride;             
00240     int b4_stride;             
00241     int h_edge_pos, v_edge_pos;
00242     int mb_num;                
00243     int linesize;              
00244     int uvlinesize;            
00245     Picture *picture;          
00246     Picture **input_picture;   
00247     Picture **reordered_input_picture; 
00248 
00249     int y_dc_scale, c_dc_scale;
00250     int ac_pred;
00251     int block_last_index[12];  
00252     int h263_aic;              
00253 
00254     /* scantables */
00255     ScanTable inter_scantable; 
00256     ScanTable intra_scantable;
00257     ScanTable intra_h_scantable;
00258     ScanTable intra_v_scantable;
00259 
00260     /* WARNING: changes above this line require updates to hardcoded
00261      *          offsets used in asm. */
00262 
00263     int64_t user_specified_pts;
00264 
00266     PutBitContext pb;
00267 
00268     int start_mb_y;            
00269     int end_mb_y;              
00270     struct MpegEncContext *thread_context[MAX_THREADS];
00271     int slice_context_count;   
00272 
00277     Picture last_picture;
00278 
00283     Picture next_picture;
00284 
00289     Picture new_picture;
00290 
00295     Picture current_picture;    
00296 
00297     Picture *last_picture_ptr;     
00298     Picture *next_picture_ptr;     
00299     Picture *current_picture_ptr;  
00300     int picture_count;             
00301     int picture_range_start, picture_range_end; 
00302     uint8_t *visualization_buffer[3]; 
00303     int last_dc[3];                
00304     int16_t *dc_val_base;
00305     int16_t *dc_val[3];            
00306     const uint8_t *y_dc_scale_table;     
00307     const uint8_t *c_dc_scale_table;     
00308     const uint8_t *chroma_qscale_table;  
00309     uint8_t *coded_block_base;
00310     uint8_t *coded_block;          
00311     int16_t (*ac_val_base)[16];
00312     int16_t (*ac_val[3])[16];      
00313     int mb_skipped;                
00314     uint8_t *mbskip_table;        
00316     uint8_t *mbintra_table;       
00317     uint8_t *cbp_table;           
00318     uint8_t *pred_dir_table;      
00319     uint8_t *edge_emu_buffer;     
00320     uint8_t *rd_scratchpad;       
00321     uint8_t *obmc_scratchpad;
00322     uint8_t *b_scratchpad;        
00323 
00324     int qscale;                 
00325     int chroma_qscale;          
00326     unsigned int lambda;        
00327     unsigned int lambda2;       
00328     int *lambda_table;
00329     int adaptive_quant;         
00330     int dquant;                 
00331     int pict_type;              
00332     int last_pict_type; //FIXME removes
00333     int last_non_b_pict_type;   
00334     int dropable;
00335     int frame_rate_index;
00336     int last_lambda_for[5];     
00337     int skipdct;                
00338 
00339     /* motion compensation */
00340     int unrestricted_mv;        
00341     int h263_long_vectors;      
00342 
00343     DSPContext dsp;             
00344     int f_code;                 
00345     int b_code;                 
00346     int16_t (*p_mv_table_base)[2];
00347     int16_t (*b_forw_mv_table_base)[2];
00348     int16_t (*b_back_mv_table_base)[2];
00349     int16_t (*b_bidir_forw_mv_table_base)[2];
00350     int16_t (*b_bidir_back_mv_table_base)[2];
00351     int16_t (*b_direct_mv_table_base)[2];
00352     int16_t (*p_field_mv_table_base[2][2])[2];
00353     int16_t (*b_field_mv_table_base[2][2][2])[2];
00354     int16_t (*p_mv_table)[2];            
00355     int16_t (*b_forw_mv_table)[2];       
00356     int16_t (*b_back_mv_table)[2];       
00357     int16_t (*b_bidir_forw_mv_table)[2]; 
00358     int16_t (*b_bidir_back_mv_table)[2]; 
00359     int16_t (*b_direct_mv_table)[2];     
00360     int16_t (*p_field_mv_table[2][2])[2];   
00361     int16_t (*b_field_mv_table[2][2][2])[2];
00362     uint8_t (*p_field_select_table[2]);
00363     uint8_t (*b_field_select_table[2][2]);
00364     int me_method;                       
00365     int mv_dir;
00366 #define MV_DIR_FORWARD   1
00367 #define MV_DIR_BACKWARD  2
00368 #define MV_DIRECT        4 ///< bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
00369     int mv_type;
00370 #define MV_TYPE_16X16       0   ///< 1 vector for the whole mb
00371 #define MV_TYPE_8X8         1   ///< 4 vectors (h263, mpeg4 4MV)
00372 #define MV_TYPE_16X8        2   ///< 2 vectors, one per 16x8 block
00373 #define MV_TYPE_FIELD       3   ///< 2 vectors, one per field
00374 #define MV_TYPE_DMV         4   ///< 2 vectors, special mpeg2 Dual Prime Vectors
00375 
00380     int mv[2][4][2];
00381     int field_select[2][2];
00382     int last_mv[2][2][2];             
00383     uint8_t *fcode_tab;               
00384     int16_t direct_scale_mv[2][64];   
00385 
00386     MotionEstContext me;
00387 
00388     int no_rounding;  
00391     /* macroblock layer */
00392     int mb_x, mb_y;
00393     int mb_skip_run;
00394     int mb_intra;
00395     uint16_t *mb_type;           
00396 #define CANDIDATE_MB_TYPE_INTRA    0x01
00397 #define CANDIDATE_MB_TYPE_INTER    0x02
00398 #define CANDIDATE_MB_TYPE_INTER4V  0x04
00399 #define CANDIDATE_MB_TYPE_SKIPPED   0x08
00400 //#define MB_TYPE_GMC      0x10
00401 
00402 #define CANDIDATE_MB_TYPE_DIRECT   0x10
00403 #define CANDIDATE_MB_TYPE_FORWARD  0x20
00404 #define CANDIDATE_MB_TYPE_BACKWARD 0x40
00405 #define CANDIDATE_MB_TYPE_BIDIR    0x80
00406 
00407 #define CANDIDATE_MB_TYPE_INTER_I    0x100
00408 #define CANDIDATE_MB_TYPE_FORWARD_I  0x200
00409 #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
00410 #define CANDIDATE_MB_TYPE_BIDIR_I    0x800
00411 
00412 #define CANDIDATE_MB_TYPE_DIRECT0    0x1000
00413 
00414     int block_index[6]; 
00415     int block_wrap[6];
00416     uint8_t *dest[3];
00417 
00418     int *mb_index2xy;        
00419 
00421     uint16_t intra_matrix[64];
00422     uint16_t chroma_intra_matrix[64];
00423     uint16_t inter_matrix[64];
00424     uint16_t chroma_inter_matrix[64];
00425 #define QUANT_BIAS_SHIFT 8
00426     int intra_quant_bias;    
00427     int inter_quant_bias;    
00428     int min_qcoeff;          
00429     int max_qcoeff;          
00430     int ac_esc_length;       
00431     uint8_t *intra_ac_vlc_length;
00432     uint8_t *intra_ac_vlc_last_length;
00433     uint8_t *inter_ac_vlc_length;
00434     uint8_t *inter_ac_vlc_last_length;
00435     uint8_t *luma_dc_vlc_length;
00436 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
00437 
00438     int coded_score[8];
00439 
00441     int (*q_intra_matrix)[64];
00442     int (*q_inter_matrix)[64];
00444     uint16_t (*q_intra_matrix16)[2][64];
00445     uint16_t (*q_inter_matrix16)[2][64];
00446 
00447     /* noise reduction */
00448     int (*dct_error_sum)[64];
00449     int dct_count[2];
00450     uint16_t (*dct_offset)[64];
00451 
00452     void *opaque;              
00453 
00454     /* bit rate control */
00455     int64_t total_bits;
00456     int frame_bits;                
00457     int next_lambda;               
00458     RateControlContext rc_context; 
00459 
00460     /* statistics, used for 2-pass encoding */
00461     int mv_bits;
00462     int header_bits;
00463     int i_tex_bits;
00464     int p_tex_bits;
00465     int i_count;
00466     int f_count;
00467     int b_count;
00468     int skip_count;
00469     int misc_bits; 
00470     int last_bits; 
00471 
00472     /* error concealment / resync */
00473     int error_count, error_occurred;
00474     uint8_t *error_status_table;       
00475 #define VP_START            1          ///< current MB is the first after a resync marker
00476 #define ER_AC_ERROR            2
00477 #define ER_DC_ERROR            4
00478 #define ER_MV_ERROR            8
00479 #define ER_AC_END              16
00480 #define ER_DC_END              32
00481 #define ER_MV_END              64
00482 
00483 #define ER_MB_ERROR (ER_AC_ERROR|ER_DC_ERROR|ER_MV_ERROR)
00484 #define ER_MB_END   (ER_AC_END|ER_DC_END|ER_MV_END)
00485 
00486     int resync_mb_x;                 
00487     int resync_mb_y;                 
00488     GetBitContext last_resync_gb;    
00489     int mb_num_left;                 
00490     int next_p_frame_damaged;        
00491     int err_recognition;
00492 
00493     ParseContext parse_context;
00494 
00495     /* H.263 specific */
00496     int gob_index;
00497     int obmc;                       
00498     int showed_packed_warning;      
00499 
00500     /* H.263+ specific */
00501     int umvplus;                    
00502     int h263_aic_dir;               
00503     int h263_slice_structured;
00504     int alt_inter_vlc;              
00505     int modified_quant;
00506     int loop_filter;
00507     int custom_pcf;
00508 
00509     /* mpeg4 specific */
00510     int time_increment_bits;        
00511     int last_time_base;
00512     int time_base;                  
00513     int64_t time;                   
00514     int64_t last_non_b_time;
00515     uint16_t pp_time;               
00516     uint16_t pb_time;               
00517     uint16_t pp_field_time;
00518     uint16_t pb_field_time;         
00519     int shape;
00520     int vol_sprite_usage;
00521     int sprite_width;
00522     int sprite_height;
00523     int sprite_left;
00524     int sprite_top;
00525     int sprite_brightness_change;
00526     int num_sprite_warping_points;
00527     int real_sprite_warping_points;
00528     uint16_t sprite_traj[4][2];      
00529     int sprite_offset[2][2];         
00530     int sprite_delta[2][2];          
00531     int sprite_shift[2];             
00532     int mcsel;
00533     int quant_precision;
00534     int quarter_sample;              
00535     int scalability;
00536     int hierachy_type;
00537     int enhancement_type;
00538     int new_pred;
00539     int reduced_res_vop;
00540     int aspect_ratio_info; //FIXME remove
00541     int sprite_warping_accuracy;
00542     int low_latency_sprite;
00543     int data_partitioning;           
00544     int partitioned_frame;           
00545     int rvlc;                        
00546     int resync_marker;               
00547     int low_delay;                   
00548     int vo_type;
00549     int vol_control_parameters;      
00550     int intra_dc_threshold;          
00551     int use_intra_dc_vlc;
00552     PutBitContext tex_pb;            
00553     PutBitContext pb2;               
00554     int mpeg_quant;
00555     int t_frame;                       
00556     int padding_bug_score;             
00557     int cplx_estimation_trash_i;
00558     int cplx_estimation_trash_p;
00559     int cplx_estimation_trash_b;
00560 
00561     /* divx specific, used to workaround (many) bugs in divx5 */
00562     int divx_version;
00563     int divx_build;
00564     int divx_packed;
00565     uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
00566     int bitstream_buffer_size;
00567     unsigned int allocated_bitstream_buffer_size;
00568 
00569     int xvid_build;
00570 
00571     /* lavc specific stuff, used to workaround bugs in libavcodec */
00572     int lavc_build;
00573 
00574     /* RV10 specific */
00575     int rv10_version; 
00576     int rv10_first_dc_coded[3];
00577     int orig_width, orig_height;
00578 
00579     /* MJPEG specific */
00580     struct MJpegContext *mjpeg_ctx;
00581     int mjpeg_vsample[3];       
00582     int mjpeg_hsample[3];       
00583 
00584     /* MSMPEG4 specific */
00585     int mv_table_index;
00586     int rl_table_index;
00587     int rl_chroma_table_index;
00588     int dc_table_index;
00589     int use_skip_mb_code;
00590     int slice_height;      
00591     int first_slice_line;  
00592     int flipflop_rounding;
00593     int msmpeg4_version;   
00594     int per_mb_rl_table;
00595     int esc3_level_length;
00596     int esc3_run_length;
00598     int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
00599     int inter_intra_pred;
00600     int mspel;
00601 
00602     /* decompression specific */
00603     GetBitContext gb;
00604 
00605     /* Mpeg1 specific */
00606     int gop_picture_number;  
00607     int last_mv_dir;         
00608     int broken_link;         
00609     uint8_t *vbv_delay_ptr;  
00610 
00611     /* MPEG-2-specific - I wished not to have to support this mess. */
00612     int progressive_sequence;
00613     int mpeg_f_code[2][2];
00614     int picture_structure;
00615 /* picture type */
00616 #define PICT_TOP_FIELD     1
00617 #define PICT_BOTTOM_FIELD  2
00618 #define PICT_FRAME         3
00619 
00620     int intra_dc_precision;
00621     int frame_pred_frame_dct;
00622     int top_field_first;
00623     int concealment_motion_vectors;
00624     int q_scale_type;
00625     int intra_vlc_format;
00626     int alternate_scan;
00627     int repeat_first_field;
00628     int chroma_420_type;
00629     int chroma_format;
00630 #define CHROMA_420 1
00631 #define CHROMA_422 2
00632 #define CHROMA_444 3
00633     int chroma_x_shift;//depend on pix_format, that depend on chroma_format
00634     int chroma_y_shift;
00635 
00636     int progressive_frame;
00637     int full_pel[2];
00638     int interlaced_dct;
00639     int first_slice;
00640     int first_field;         
00641     int drop_frame_timecode; 
00642     int scan_offset;         
00643 
00644     /* RTP specific */
00645     int rtp_mode;
00646 
00647     uint8_t *ptr_lastgob;
00648     int swap_uv;             //vcr2 codec is an MPEG-2 variant with U and V swapped
00649     DCTELEM (*pblocks[12])[64];
00650 
00651     DCTELEM (*block)[64]; 
00652     DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
00653     int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
00654 #define SLICE_OK         0
00655 #define SLICE_ERROR     -1
00656 #define SLICE_END       -2 ///<end marker found
00657 #define SLICE_NOEND     -3 ///<no end marker or error found but mb count exceeded
00658 
00659     void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
00660                            DCTELEM *block/*align 16*/, int n, int qscale);
00661     void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
00662                            DCTELEM *block/*align 16*/, int n, int qscale);
00663     void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
00664                            DCTELEM *block/*align 16*/, int n, int qscale);
00665     void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
00666                            DCTELEM *block/*align 16*/, int n, int qscale);
00667     void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
00668                            DCTELEM *block/*align 16*/, int n, int qscale);
00669     void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
00670                            DCTELEM *block/*align 16*/, int n, int qscale);
00671     void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
00672                            DCTELEM *block/*align 16*/, int n, int qscale);
00673     void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
00674                            DCTELEM *block/*align 16*/, int n, int qscale);
00675     void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
00676                            DCTELEM *block/*align 16*/, int n, int qscale);
00677     void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
00678                            DCTELEM *block/*align 16*/, int n, int qscale);
00679     int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
00680     int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
00681     void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
00682 } MpegEncContext;
00683 
00684 #define REBASE_PICTURE(pic, new_ctx, old_ctx) (pic ? \
00685     (pic >= old_ctx->picture && pic < old_ctx->picture+old_ctx->picture_count ?\
00686         &new_ctx->picture[pic - old_ctx->picture] : pic - (Picture*)old_ctx + (Picture*)new_ctx)\
00687     : NULL)
00688 
00689 void MPV_decode_defaults(MpegEncContext *s);
00690 int MPV_common_init(MpegEncContext *s);
00691 void MPV_common_end(MpegEncContext *s);
00692 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
00693 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
00694 void MPV_frame_end(MpegEncContext *s);
00695 int MPV_encode_init(AVCodecContext *avctx);
00696 int MPV_encode_end(AVCodecContext *avctx);
00697 int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
00698 void MPV_common_init_mmx(MpegEncContext *s);
00699 void MPV_common_init_axp(MpegEncContext *s);
00700 void MPV_common_init_mlib(MpegEncContext *s);
00701 void MPV_common_init_mmi(MpegEncContext *s);
00702 void MPV_common_init_arm(MpegEncContext *s);
00703 void MPV_common_init_altivec(MpegEncContext *s);
00704 void MPV_common_init_bfin(MpegEncContext *s);
00705 void ff_clean_intra_table_entries(MpegEncContext *s);
00706 void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
00707 void ff_mpeg_flush(AVCodecContext *avctx);
00708 void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
00709 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
00710 void ff_release_unused_pictures(MpegEncContext *s, int remove_current);
00711 int ff_find_unused_picture(MpegEncContext *s, int shared);
00712 void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
00713 void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
00714 int MPV_lowest_referenced_row(MpegEncContext *s, int dir);
00715 void MPV_report_decode_progress(MpegEncContext *s);
00716 int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
00717 const uint8_t *avpriv_mpv_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
00718 void ff_set_qscale(MpegEncContext * s, int qscale);
00719 
00720 void ff_er_frame_start(MpegEncContext *s);
00721 void ff_er_frame_end(MpegEncContext *s);
00722 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
00723 
00724 int ff_dct_common_init(MpegEncContext *s);
00725 void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
00726                        const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
00727 
00728 void ff_init_block_index(MpegEncContext *s);
00729 void ff_copy_picture(Picture *dst, Picture *src);
00730 
00735 int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
00736 
00737 extern const enum PixelFormat ff_pixfmt_list_420[];
00738 extern const enum PixelFormat ff_hwaccel_pixfmt_list_420[];
00739 
00740 static inline void ff_update_block_index(MpegEncContext *s){
00741     const int block_size= 8>>s->avctx->lowres;
00742 
00743     s->block_index[0]+=2;
00744     s->block_index[1]+=2;
00745     s->block_index[2]+=2;
00746     s->block_index[3]+=2;
00747     s->block_index[4]++;
00748     s->block_index[5]++;
00749     s->dest[0]+= 2*block_size;
00750     s->dest[1]+= block_size;
00751     s->dest[2]+= block_size;
00752 }
00753 
00754 static inline int get_bits_diff(MpegEncContext *s){
00755     const int bits= put_bits_count(&s->pb);
00756     const int last= s->last_bits;
00757 
00758     s->last_bits = bits;
00759 
00760     return bits - last;
00761 }
00762 
00763 static inline int ff_h263_round_chroma(int x){
00764     static const uint8_t h263_chroma_roundtab[16] = {
00765     //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
00766         0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
00767     };
00768     return h263_chroma_roundtab[x & 0xf] + (x >> 3);
00769 }
00770 
00771 /* motion_est.c */
00772 void ff_estimate_p_frame_motion(MpegEncContext * s,
00773                              int mb_x, int mb_y);
00774 void ff_estimate_b_frame_motion(MpegEncContext * s,
00775                              int mb_x, int mb_y);
00776 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
00777 void ff_fix_long_p_mvs(MpegEncContext * s);
00778 void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
00779                      int16_t (*mv_table)[2], int f_code, int type, int truncate);
00780 int ff_init_me(MpegEncContext *s);
00781 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
00782 int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
00783                              int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
00784                              int ref_mv_scale, int size, int h);
00785 int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
00786                                int ref_index, int size, int h, int add_rate);
00787 
00788 /* mpeg12.c */
00789 extern const uint8_t ff_mpeg1_dc_scale_table[128];
00790 extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
00791 
00792 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
00793 void mpeg1_encode_mb(MpegEncContext *s,
00794                      DCTELEM block[6][64],
00795                      int motion_x, int motion_y);
00796 void ff_mpeg1_encode_init(MpegEncContext *s);
00797 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
00798 void ff_mpeg1_clean_buffers(MpegEncContext *s);
00799 int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s);
00800 
00801 extern const uint8_t ff_aic_dc_scale_table[32];
00802 extern const uint8_t ff_h263_chroma_qscale_table[32];
00803 extern const uint8_t ff_h263_loop_filter_strength[32];
00804 
00805 /* h261.c */
00806 void ff_h261_loop_filter(MpegEncContext *s);
00807 void ff_h261_reorder_mb_index(MpegEncContext* s);
00808 void ff_h261_encode_mb(MpegEncContext *s,
00809                     DCTELEM block[6][64],
00810                     int motion_x, int motion_y);
00811 void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
00812 void ff_h261_encode_init(MpegEncContext *s);
00813 int ff_h261_get_picture_format(int width, int height);
00814 
00815 
00816 /* rv10.c */
00817 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
00818 int rv_decode_dc(MpegEncContext *s, int n);
00819 void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
00820 
00821 
00822 /* msmpeg4.c */
00823 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
00824 void msmpeg4_encode_ext_header(MpegEncContext * s);
00825 void msmpeg4_encode_mb(MpegEncContext * s,
00826                        DCTELEM block[6][64],
00827                        int motion_x, int motion_y);
00828 int msmpeg4_decode_picture_header(MpegEncContext * s);
00829 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
00830 int ff_msmpeg4_decode_init(AVCodecContext *avctx);
00831 void ff_msmpeg4_encode_init(MpegEncContext *s);
00832 int ff_wmv2_decode_picture_header(MpegEncContext * s);
00833 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
00834 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
00835 void ff_mspel_motion(MpegEncContext *s,
00836                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00837                                uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
00838                                int motion_x, int motion_y, int h);
00839 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
00840 void ff_wmv2_encode_mb(MpegEncContext * s,
00841                        DCTELEM block[6][64],
00842                        int motion_x, int motion_y);
00843 
00844 #endif /* AVCODEC_MPEGVIDEO_H */
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