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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 "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 #include "timecode.h"
00040 
00041 #define FRAME_SKIPPED 100 ///< return value for header parsers if frame is not coded
00042 
00043 enum OutputFormat {
00044     FMT_MPEG1,
00045     FMT_H261,
00046     FMT_H263,
00047     FMT_MJPEG,
00048     FMT_H264,
00049 };
00050 
00051 #define MPEG_BUF_SIZE (16 * 1024)
00052 
00053 #define QMAT_SHIFT_MMX 16
00054 #define QMAT_SHIFT 22
00055 
00056 #define MAX_FCODE 7
00057 #define MAX_MV 2048
00058 
00059 #define MAX_THREADS 16
00060 
00061 #define MAX_PICTURE_COUNT 32
00062 
00063 #define ME_MAP_SIZE 64
00064 #define ME_MAP_SHIFT 3
00065 #define ME_MAP_MV_BITS 11
00066 
00067 #define MAX_MB_BYTES (30*16*16*3/8 + 120)
00068 
00069 #define INPLACE_OFFSET 16
00070 
00071 /* Start codes. */
00072 #define SEQ_END_CODE            0x000001b7
00073 #define SEQ_START_CODE          0x000001b3
00074 #define GOP_START_CODE          0x000001b8
00075 #define PICTURE_START_CODE      0x00000100
00076 #define SLICE_MIN_START_CODE    0x00000101
00077 #define SLICE_MAX_START_CODE    0x000001af
00078 #define EXT_START_CODE          0x000001b5
00079 #define USER_START_CODE         0x000001b2
00080 
00081 struct MpegEncContext;
00082 
00086 typedef struct Picture{
00087     struct AVFrame f;
00088 
00092     uint8_t *interpolated[3];
00093     int8_t *qscale_table_base;
00094     int16_t (*motion_val_base[2])[2];
00095     uint32_t *mb_type_base;
00096 #define MB_TYPE_INTRA MB_TYPE_INTRA4x4 //default mb_type if there is just one type
00097 #define IS_INTRA4x4(a)   ((a)&MB_TYPE_INTRA4x4)
00098 #define IS_INTRA16x16(a) ((a)&MB_TYPE_INTRA16x16)
00099 #define IS_PCM(a)        ((a)&MB_TYPE_INTRA_PCM)
00100 #define IS_INTRA(a)      ((a)&7)
00101 #define IS_INTER(a)      ((a)&(MB_TYPE_16x16|MB_TYPE_16x8|MB_TYPE_8x16|MB_TYPE_8x8))
00102 #define IS_SKIP(a)       ((a)&MB_TYPE_SKIP)
00103 #define IS_INTRA_PCM(a)  ((a)&MB_TYPE_INTRA_PCM)
00104 #define IS_INTERLACED(a) ((a)&MB_TYPE_INTERLACED)
00105 #define IS_DIRECT(a)     ((a)&MB_TYPE_DIRECT2)
00106 #define IS_GMC(a)        ((a)&MB_TYPE_GMC)
00107 #define IS_16X16(a)      ((a)&MB_TYPE_16x16)
00108 #define IS_16X8(a)       ((a)&MB_TYPE_16x8)
00109 #define IS_8X16(a)       ((a)&MB_TYPE_8x16)
00110 #define IS_8X8(a)        ((a)&MB_TYPE_8x8)
00111 #define IS_SUB_8X8(a)    ((a)&MB_TYPE_16x16) //note reused
00112 #define IS_SUB_8X4(a)    ((a)&MB_TYPE_16x8)  //note reused
00113 #define IS_SUB_4X8(a)    ((a)&MB_TYPE_8x16)  //note reused
00114 #define IS_SUB_4X4(a)    ((a)&MB_TYPE_8x8)   //note reused
00115 #define IS_ACPRED(a)     ((a)&MB_TYPE_ACPRED)
00116 #define IS_QUANT(a)      ((a)&MB_TYPE_QUANT)
00117 #define IS_DIR(a, part, list) ((a) & (MB_TYPE_P0L0<<((part)+2*(list))))
00118 #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
00119 #define HAS_CBP(a)        ((a)&MB_TYPE_CBP)
00120 
00121     int field_poc[2];           
00122     int poc;                    
00123     int frame_num;              
00124     int mmco_reset;             
00125     int pic_id;                 
00127     int long_ref;               
00128     int ref_poc[2][2][32];      
00129     int ref_count[2][2];        
00130     int mbaff;                  
00131     int field_picture;          
00132     int sync;                   
00133 
00134     int mb_var_sum;             
00135     int mc_mb_var_sum;          
00136     uint16_t *mb_var;           
00137     uint16_t *mc_mb_var;        
00138     uint8_t *mb_mean;           
00139     int32_t *mb_cmp_score;      
00140     int b_frame_score;          /* */
00141     struct MpegEncContext *owner2; 
00142 } Picture;
00143 
00147 typedef struct MotionEstContext{
00148     AVCodecContext *avctx;
00149     int skip;                          
00150     int co_located_mv[4][2];           
00151     int direct_basis_mv[4][2];
00152     uint8_t *scratchpad;               
00153     uint8_t *best_mb;
00154     uint8_t *temp_mb[2];
00155     uint8_t *temp;
00156     int best_bits;
00157     uint32_t *map;                     
00158     uint32_t *score_map;               
00159     unsigned map_generation;
00160     int pre_penalty_factor;
00161     int penalty_factor;                
00166     int sub_penalty_factor;
00167     int mb_penalty_factor;
00168     int flags;
00169     int sub_flags;
00170     int mb_flags;
00171     int pre_pass;                      
00172     int dia_size;
00173     int xmin;
00174     int xmax;
00175     int ymin;
00176     int ymax;
00177     int pred_x;
00178     int pred_y;
00179     uint8_t *src[4][4];
00180     uint8_t *ref[4][4];
00181     int stride;
00182     int uvstride;
00183     /* temp variables for picture complexity calculation */
00184     int mc_mb_var_sum_temp;
00185     int mb_var_sum_temp;
00186     int scene_change_score;
00187 /*    cmp, chroma_cmp;*/
00188     op_pixels_func (*hpel_put)[4];
00189     op_pixels_func (*hpel_avg)[4];
00190     qpel_mc_func (*qpel_put)[16];
00191     qpel_mc_func (*qpel_avg)[16];
00192     uint8_t (*mv_penalty)[MAX_MV*2+1];  
00193     uint8_t *current_mv_penalty;
00194     int (*sub_motion_search)(struct MpegEncContext * s,
00195                                   int *mx_ptr, int *my_ptr, int dmin,
00196                                   int src_index, int ref_index,
00197                                   int size, int h);
00198 }MotionEstContext;
00199 
00203 typedef struct MpegEncContext {
00204     AVClass *class;
00205     struct AVCodecContext *avctx;
00206     /* the following parameters must be initialized before encoding */
00207     int width, height;
00208     int gop_size;
00209     int intra_only;   
00210     int bit_rate;     
00211     enum OutputFormat out_format; 
00212     int h263_pred;    
00213     int pb_frame;     
00214 
00215 /* the following codec id fields are deprecated in favor of codec_id */
00216     int h263_plus;    
00217     int h263_flv;     
00218 
00219     enum CodecID codec_id;     /* see CODEC_ID_xxx */
00220     int fixed_qscale; 
00221     int encoding;     
00222     int flags;        
00223     int flags2;       
00224     int max_b_frames; 
00225     int luma_elim_threshold;
00226     int chroma_elim_threshold;
00227     int strict_std_compliance; 
00228     int workaround_bugs;       
00229     int codec_tag;             
00230     int stream_codec_tag;      
00231     /* the following fields are managed internally by the encoder */
00232 
00233     /* sequence parameters */
00234     int context_initialized;
00235     int input_picture_number;  
00236     int coded_picture_number;  
00237     int picture_number;       //FIXME remove, unclear definition
00238     int picture_in_gop_number; 
00239     int mb_width, mb_height;   
00240     int mb_stride;             
00241     int b8_stride;             
00242     int b4_stride;             
00243     int h_edge_pos, v_edge_pos;
00244     int mb_num;                
00245     int linesize;              
00246     int uvlinesize;            
00247     Picture *picture;          
00248     Picture **input_picture;   
00249     Picture **reordered_input_picture; 
00250 
00251     int y_dc_scale, c_dc_scale;
00252     int ac_pred;
00253     int block_last_index[12];  
00254     int h263_aic;              
00255 
00256     /* scantables */
00257     ScanTable inter_scantable; 
00258     ScanTable intra_scantable;
00259     ScanTable intra_h_scantable;
00260     ScanTable intra_v_scantable;
00261 
00262     /* WARNING: changes above this line require updates to hardcoded
00263      *          offsets used in asm. */
00264 
00265     int64_t user_specified_pts;
00266 
00268     PutBitContext pb;
00269 
00270     int start_mb_y;            
00271     int end_mb_y;              
00272     struct MpegEncContext *thread_context[MAX_THREADS];
00273     int slice_context_count;   
00274 
00279     Picture last_picture;
00280 
00285     Picture next_picture;
00286 
00291     Picture new_picture;
00292 
00297     Picture current_picture;    
00298 
00299     Picture *last_picture_ptr;     
00300     Picture *next_picture_ptr;     
00301     Picture *current_picture_ptr;  
00302     int picture_count;             
00303     int picture_range_start, picture_range_end; 
00304     uint8_t *visualization_buffer[3]; 
00305     int last_dc[3];                
00306     int16_t *dc_val_base;
00307     int16_t *dc_val[3];            
00308     const uint8_t *y_dc_scale_table;     
00309     const uint8_t *c_dc_scale_table;     
00310     const uint8_t *chroma_qscale_table;  
00311     uint8_t *coded_block_base;
00312     uint8_t *coded_block;          
00313     int16_t (*ac_val_base)[16];
00314     int16_t (*ac_val[3])[16];      
00315     int mb_skipped;                
00316     uint8_t *mbskip_table;        
00318     uint8_t *mbintra_table;       
00319     uint8_t *cbp_table;           
00320     uint8_t *pred_dir_table;      
00321     uint8_t *edge_emu_buffer;     
00322     uint8_t *rd_scratchpad;       
00323     uint8_t *obmc_scratchpad;
00324     uint8_t *b_scratchpad;        
00325 
00326     int qscale;                 
00327     int chroma_qscale;          
00328     unsigned int lambda;        
00329     unsigned int lambda2;       
00330     int *lambda_table;
00331     int adaptive_quant;         
00332     int dquant;                 
00333     int closed_gop;             
00334     int pict_type;              
00335     int last_pict_type; //FIXME removes
00336     int last_non_b_pict_type;   
00337     int dropable;
00338     int frame_rate_index;
00339     int last_lambda_for[5];     
00340     int skipdct;                
00341 
00342     /* motion compensation */
00343     int unrestricted_mv;        
00344     int h263_long_vectors;      
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     /* macroblock layer */
00395     int mb_x, mb_y;
00396     int mb_skip_run;
00397     int mb_intra;
00398     uint16_t *mb_type;           
00399 #define CANDIDATE_MB_TYPE_INTRA    0x01
00400 #define CANDIDATE_MB_TYPE_INTER    0x02
00401 #define CANDIDATE_MB_TYPE_INTER4V  0x04
00402 #define CANDIDATE_MB_TYPE_SKIPPED   0x08
00403 //#define MB_TYPE_GMC      0x10
00404 
00405 #define CANDIDATE_MB_TYPE_DIRECT   0x10
00406 #define CANDIDATE_MB_TYPE_FORWARD  0x20
00407 #define CANDIDATE_MB_TYPE_BACKWARD 0x40
00408 #define CANDIDATE_MB_TYPE_BIDIR    0x80
00409 
00410 #define CANDIDATE_MB_TYPE_INTER_I    0x100
00411 #define CANDIDATE_MB_TYPE_FORWARD_I  0x200
00412 #define CANDIDATE_MB_TYPE_BACKWARD_I 0x400
00413 #define CANDIDATE_MB_TYPE_BIDIR_I    0x800
00414 
00415 #define CANDIDATE_MB_TYPE_DIRECT0    0x1000
00416 
00417     int block_index[6]; 
00418     int block_wrap[6];
00419     uint8_t *dest[3];
00420 
00421     int *mb_index2xy;        
00422 
00424     uint16_t intra_matrix[64];
00425     uint16_t chroma_intra_matrix[64];
00426     uint16_t inter_matrix[64];
00427     uint16_t chroma_inter_matrix[64];
00428 #define QUANT_BIAS_SHIFT 8
00429     int intra_quant_bias;    
00430     int inter_quant_bias;    
00431     int min_qcoeff;          
00432     int max_qcoeff;          
00433     int ac_esc_length;       
00434     uint8_t *intra_ac_vlc_length;
00435     uint8_t *intra_ac_vlc_last_length;
00436     uint8_t *inter_ac_vlc_length;
00437     uint8_t *inter_ac_vlc_last_length;
00438     uint8_t *luma_dc_vlc_length;
00439 #define UNI_AC_ENC_INDEX(run,level) ((run)*128 + (level))
00440 
00441     int coded_score[8];
00442 
00444     int (*q_intra_matrix)[64];
00445     int (*q_chroma_intra_matrix)[64];
00446     int (*q_inter_matrix)[64];
00448     uint16_t (*q_intra_matrix16)[2][64];
00449     uint16_t (*q_chroma_intra_matrix16)[2][64];
00450     uint16_t (*q_inter_matrix16)[2][64];
00451 
00452     /* noise reduction */
00453     int (*dct_error_sum)[64];
00454     int dct_count[2];
00455     uint16_t (*dct_offset)[64];
00456 
00457     void *opaque;              
00458 
00459     /* bit rate control */
00460     int64_t total_bits;
00461     int frame_bits;                
00462     int next_lambda;               
00463     RateControlContext rc_context; 
00464 
00465     /* statistics, used for 2-pass encoding */
00466     int mv_bits;
00467     int header_bits;
00468     int i_tex_bits;
00469     int p_tex_bits;
00470     int i_count;
00471     int f_count;
00472     int b_count;
00473     int skip_count;
00474     int misc_bits; 
00475     int last_bits; 
00476 
00477     /* error concealment / resync */
00478     int error_count, error_occurred;
00479     uint8_t *error_status_table;       
00480 #define VP_START            1          ///< current MB is the first after a resync marker
00481 #define ER_AC_ERROR            2
00482 #define ER_DC_ERROR            4
00483 #define ER_MV_ERROR            8
00484 #define ER_AC_END              16
00485 #define ER_DC_END              32
00486 #define ER_MV_END              64
00487 
00488 #define ER_MB_ERROR (ER_AC_ERROR|ER_DC_ERROR|ER_MV_ERROR)
00489 #define ER_MB_END   (ER_AC_END|ER_DC_END|ER_MV_END)
00490 
00491     int resync_mb_x;                 
00492     int resync_mb_y;                 
00493     GetBitContext last_resync_gb;    
00494     int mb_num_left;                 
00495     int next_p_frame_damaged;        
00496     int err_recognition;
00497 
00498     ParseContext parse_context;
00499 
00500     /* H.263 specific */
00501     int gob_index;
00502     int obmc;                       
00503     int showed_packed_warning;      
00504 
00505     /* H.263+ specific */
00506     int umvplus;                    
00507     int h263_aic_dir;               
00508     int h263_slice_structured;
00509     int alt_inter_vlc;              
00510     int modified_quant;
00511     int loop_filter;
00512     int custom_pcf;
00513 
00514     /* mpeg4 specific */
00515     int time_increment_bits;        
00516     int last_time_base;
00517     int time_base;                  
00518     int64_t time;                   
00519     int64_t last_non_b_time;
00520     uint16_t pp_time;               
00521     uint16_t pb_time;               
00522     uint16_t pp_field_time;
00523     uint16_t pb_field_time;         
00524     int shape;
00525     int vol_sprite_usage;
00526     int sprite_width;
00527     int sprite_height;
00528     int sprite_left;
00529     int sprite_top;
00530     int sprite_brightness_change;
00531     int num_sprite_warping_points;
00532     int real_sprite_warping_points;
00533     uint16_t sprite_traj[4][2];      
00534     int sprite_offset[2][2];         
00535     int sprite_delta[2][2];          
00536     int sprite_shift[2];             
00537     int mcsel;
00538     int quant_precision;
00539     int quarter_sample;              
00540     int scalability;
00541     int hierachy_type;
00542     int enhancement_type;
00543     int new_pred;
00544     int reduced_res_vop;
00545     int aspect_ratio_info; //FIXME remove
00546     int sprite_warping_accuracy;
00547     int low_latency_sprite;
00548     int data_partitioning;           
00549     int partitioned_frame;           
00550     int rvlc;                        
00551     int resync_marker;               
00552     int low_delay;                   
00553     int vo_type;
00554     int vol_control_parameters;      
00555     int intra_dc_threshold;          
00556     int use_intra_dc_vlc;
00557     PutBitContext tex_pb;            
00558     PutBitContext pb2;               
00559     int mpeg_quant;
00560     int t_frame;                       
00561     int padding_bug_score;             
00562     int cplx_estimation_trash_i;
00563     int cplx_estimation_trash_p;
00564     int cplx_estimation_trash_b;
00565 
00566     /* divx specific, used to workaround (many) bugs in divx5 */
00567     int divx_version;
00568     int divx_build;
00569     int divx_packed;
00570     uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them
00571     int bitstream_buffer_size;
00572     unsigned int allocated_bitstream_buffer_size;
00573 
00574     int xvid_build;
00575 
00576     /* lavc specific stuff, used to workaround bugs in libavcodec */
00577     int lavc_build;
00578 
00579     /* RV10 specific */
00580     int rv10_version; 
00581     int rv10_first_dc_coded[3];
00582     int orig_width, orig_height;
00583 
00584     /* MJPEG specific */
00585     struct MJpegContext *mjpeg_ctx;
00586     int mjpeg_vsample[3];       
00587     int mjpeg_hsample[3];       
00588 
00589     /* MSMPEG4 specific */
00590     int mv_table_index;
00591     int rl_table_index;
00592     int rl_chroma_table_index;
00593     int dc_table_index;
00594     int use_skip_mb_code;
00595     int slice_height;      
00596     int first_slice_line;  
00597     int flipflop_rounding;
00598     int msmpeg4_version;   
00599     int per_mb_rl_table;
00600     int esc3_level_length;
00601     int esc3_run_length;
00603     int (*ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2];
00604     int inter_intra_pred;
00605     int mspel;
00606 
00607     /* decompression specific */
00608     GetBitContext gb;
00609 
00610     /* Mpeg1 specific */
00611     int gop_picture_number;  
00612     int last_mv_dir;         
00613     int broken_link;         
00614     uint8_t *vbv_delay_ptr;  
00615 
00616     /* MPEG-2-specific - I wished not to have to support this mess. */
00617     int progressive_sequence;
00618     int mpeg_f_code[2][2];
00619     int picture_structure;
00620 /* picture type */
00621 #define PICT_TOP_FIELD     1
00622 #define PICT_BOTTOM_FIELD  2
00623 #define PICT_FRAME         3
00624 
00625     int intra_dc_precision;
00626     int frame_pred_frame_dct;
00627     int top_field_first;
00628     int concealment_motion_vectors;
00629     int q_scale_type;
00630     int intra_vlc_format;
00631     int alternate_scan;
00632     int repeat_first_field;
00633     int chroma_420_type;
00634     int chroma_format;
00635 #define CHROMA_420 1
00636 #define CHROMA_422 2
00637 #define CHROMA_444 3
00638     int chroma_x_shift;//depend on pix_format, that depend on chroma_format
00639     int chroma_y_shift;
00640 
00641     int progressive_frame;
00642     int full_pel[2];
00643     int interlaced_dct;
00644     int first_slice;
00645     int first_field;         
00646     int drop_frame_timecode; 
00647     int scan_offset;         
00648 
00649     /* RTP specific */
00650     int rtp_mode;
00651 
00652     struct ff_timecode tc;
00653 
00654     uint8_t *ptr_lastgob;
00655     int swap_uv;             //vcr2 codec is an MPEG-2 variant with U and V swapped
00656     DCTELEM (*pblocks[12])[64];
00657 
00658     DCTELEM (*block)[64]; 
00659     DCTELEM (*blocks)[8][64]; // for HQ mode we need to keep the best block
00660     int (*decode_mb)(struct MpegEncContext *s, DCTELEM block[6][64]); // used by some codecs to avoid a switch()
00661 #define SLICE_OK         0
00662 #define SLICE_ERROR     -1
00663 #define SLICE_END       -2 ///<end marker found
00664 #define SLICE_NOEND     -3 ///<no end marker or error found but mb count exceeded
00665 
00666     void (*dct_unquantize_mpeg1_intra)(struct MpegEncContext *s,
00667                            DCTELEM *block/*align 16*/, int n, int qscale);
00668     void (*dct_unquantize_mpeg1_inter)(struct MpegEncContext *s,
00669                            DCTELEM *block/*align 16*/, int n, int qscale);
00670     void (*dct_unquantize_mpeg2_intra)(struct MpegEncContext *s,
00671                            DCTELEM *block/*align 16*/, int n, int qscale);
00672     void (*dct_unquantize_mpeg2_inter)(struct MpegEncContext *s,
00673                            DCTELEM *block/*align 16*/, int n, int qscale);
00674     void (*dct_unquantize_h263_intra)(struct MpegEncContext *s,
00675                            DCTELEM *block/*align 16*/, int n, int qscale);
00676     void (*dct_unquantize_h263_inter)(struct MpegEncContext *s,
00677                            DCTELEM *block/*align 16*/, int n, int qscale);
00678     void (*dct_unquantize_h261_intra)(struct MpegEncContext *s,
00679                            DCTELEM *block/*align 16*/, int n, int qscale);
00680     void (*dct_unquantize_h261_inter)(struct MpegEncContext *s,
00681                            DCTELEM *block/*align 16*/, int n, int qscale);
00682     void (*dct_unquantize_intra)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
00683                            DCTELEM *block/*align 16*/, int n, int qscale);
00684     void (*dct_unquantize_inter)(struct MpegEncContext *s, // unquantizer to use (mpeg4 can use both)
00685                            DCTELEM *block/*align 16*/, int n, int qscale);
00686     int (*dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
00687     int (*fast_dct_quantize)(struct MpegEncContext *s, DCTELEM *block/*align 16*/, int n, int qscale, int *overflow);
00688     void (*denoise_dct)(struct MpegEncContext *s, DCTELEM *block);
00689 } MpegEncContext;
00690 
00691 #define REBASE_PICTURE(pic, new_ctx, old_ctx) (pic ? \
00692     (pic >= old_ctx->picture && pic < old_ctx->picture+old_ctx->picture_count ?\
00693         &new_ctx->picture[pic - old_ctx->picture] : pic - (Picture*)old_ctx + (Picture*)new_ctx)\
00694     : NULL)
00695 
00696 void MPV_decode_defaults(MpegEncContext *s);
00697 int MPV_common_init(MpegEncContext *s);
00698 void MPV_common_end(MpegEncContext *s);
00699 void MPV_decode_mb(MpegEncContext *s, DCTELEM block[12][64]);
00700 int MPV_frame_start(MpegEncContext *s, AVCodecContext *avctx);
00701 void MPV_frame_end(MpegEncContext *s);
00702 int MPV_encode_init(AVCodecContext *avctx);
00703 int MPV_encode_end(AVCodecContext *avctx);
00704 int MPV_encode_picture(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data);
00705 void MPV_common_init_mmx(MpegEncContext *s);
00706 void MPV_common_init_axp(MpegEncContext *s);
00707 void MPV_common_init_mlib(MpegEncContext *s);
00708 void MPV_common_init_mmi(MpegEncContext *s);
00709 void MPV_common_init_arm(MpegEncContext *s);
00710 void MPV_common_init_altivec(MpegEncContext *s);
00711 void MPV_common_init_bfin(MpegEncContext *s);
00712 void ff_clean_intra_table_entries(MpegEncContext *s);
00713 void ff_draw_horiz_band(MpegEncContext *s, int y, int h);
00714 void ff_mpeg_flush(AVCodecContext *avctx);
00715 void ff_print_debug_info(MpegEncContext *s, AVFrame *pict);
00716 void ff_write_quant_matrix(PutBitContext *pb, uint16_t *matrix);
00717 void ff_release_unused_pictures(MpegEncContext *s, int remove_current);
00718 int ff_find_unused_picture(MpegEncContext *s, int shared);
00719 void ff_denoise_dct(MpegEncContext *s, DCTELEM *block);
00720 void ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src);
00721 int MPV_lowest_referenced_row(MpegEncContext *s, int dir);
00722 void MPV_report_decode_progress(MpegEncContext *s);
00723 int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src);
00724 const uint8_t *avpriv_mpv_find_start_code(const uint8_t *p, const uint8_t *end, uint32_t *state);
00725 void ff_set_qscale(MpegEncContext * s, int qscale);
00726 
00727 void ff_er_frame_start(MpegEncContext *s);
00728 void ff_er_frame_end(MpegEncContext *s);
00729 void ff_er_add_slice(MpegEncContext *s, int startx, int starty, int endx, int endy, int status);
00730 
00731 int ff_dct_common_init(MpegEncContext *s);
00732 void ff_convert_matrix(DSPContext *dsp, int (*qmat)[64], uint16_t (*qmat16)[2][64],
00733                        const uint16_t *quant_matrix, int bias, int qmin, int qmax, int intra);
00734 
00735 void ff_init_block_index(MpegEncContext *s);
00736 void ff_copy_picture(Picture *dst, Picture *src);
00737 
00742 int ff_alloc_picture(MpegEncContext *s, Picture *pic, int shared);
00743 
00744 extern const enum PixelFormat ff_pixfmt_list_420[];
00745 extern const enum PixelFormat ff_hwaccel_pixfmt_list_420[];
00746 
00747 static inline void ff_update_block_index(MpegEncContext *s){
00748     const int block_size= 8>>s->avctx->lowres;
00749 
00750     s->block_index[0]+=2;
00751     s->block_index[1]+=2;
00752     s->block_index[2]+=2;
00753     s->block_index[3]+=2;
00754     s->block_index[4]++;
00755     s->block_index[5]++;
00756     s->dest[0]+= 2*block_size;
00757     s->dest[1]+= block_size;
00758     s->dest[2]+= block_size;
00759 }
00760 
00761 static inline int get_bits_diff(MpegEncContext *s){
00762     const int bits= put_bits_count(&s->pb);
00763     const int last= s->last_bits;
00764 
00765     s->last_bits = bits;
00766 
00767     return bits - last;
00768 }
00769 
00770 static inline int ff_h263_round_chroma(int x){
00771     static const uint8_t h263_chroma_roundtab[16] = {
00772     //  0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15
00773         0, 0, 0, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1,
00774     };
00775     return h263_chroma_roundtab[x & 0xf] + (x >> 3);
00776 }
00777 
00778 /* motion_est.c */
00779 void ff_estimate_p_frame_motion(MpegEncContext * s,
00780                              int mb_x, int mb_y);
00781 void ff_estimate_b_frame_motion(MpegEncContext * s,
00782                              int mb_x, int mb_y);
00783 int ff_get_best_fcode(MpegEncContext * s, int16_t (*mv_table)[2], int type);
00784 void ff_fix_long_p_mvs(MpegEncContext * s);
00785 void ff_fix_long_mvs(MpegEncContext * s, uint8_t *field_select_table, int field_select,
00786                      int16_t (*mv_table)[2], int f_code, int type, int truncate);
00787 int ff_init_me(MpegEncContext *s);
00788 int ff_pre_estimate_p_frame_motion(MpegEncContext * s, int mb_x, int mb_y);
00789 int ff_epzs_motion_search(MpegEncContext * s, int *mx_ptr, int *my_ptr,
00790                              int P[10][2], int src_index, int ref_index, int16_t (*last_mv)[2],
00791                              int ref_mv_scale, int size, int h);
00792 int ff_get_mb_score(MpegEncContext * s, int mx, int my, int src_index,
00793                                int ref_index, int size, int h, int add_rate);
00794 
00795 /* mpeg12.c */
00796 extern const uint8_t ff_mpeg1_dc_scale_table[128];
00797 extern const uint8_t * const ff_mpeg2_dc_scale_table[4];
00798 
00799 void mpeg1_encode_picture_header(MpegEncContext *s, int picture_number);
00800 void mpeg1_encode_mb(MpegEncContext *s,
00801                      DCTELEM block[6][64],
00802                      int motion_x, int motion_y);
00803 void ff_mpeg1_encode_init(MpegEncContext *s);
00804 void ff_mpeg1_encode_slice_header(MpegEncContext *s);
00805 void ff_mpeg1_clean_buffers(MpegEncContext *s);
00806 int ff_mpeg1_find_frame_end(ParseContext *pc, const uint8_t *buf, int buf_size, AVCodecParserContext *s);
00807 
00808 extern const uint8_t ff_aic_dc_scale_table[32];
00809 extern const uint8_t ff_h263_chroma_qscale_table[32];
00810 extern const uint8_t ff_h263_loop_filter_strength[32];
00811 
00812 /* h261.c */
00813 void ff_h261_loop_filter(MpegEncContext *s);
00814 void ff_h261_reorder_mb_index(MpegEncContext* s);
00815 void ff_h261_encode_mb(MpegEncContext *s,
00816                     DCTELEM block[6][64],
00817                     int motion_x, int motion_y);
00818 void ff_h261_encode_picture_header(MpegEncContext * s, int picture_number);
00819 void ff_h261_encode_init(MpegEncContext *s);
00820 int ff_h261_get_picture_format(int width, int height);
00821 
00822 
00823 /* rv10.c */
00824 void rv10_encode_picture_header(MpegEncContext *s, int picture_number);
00825 int rv_decode_dc(MpegEncContext *s, int n);
00826 void rv20_encode_picture_header(MpegEncContext *s, int picture_number);
00827 
00828 
00829 /* msmpeg4.c */
00830 void msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number);
00831 void msmpeg4_encode_ext_header(MpegEncContext * s);
00832 void msmpeg4_encode_mb(MpegEncContext * s,
00833                        DCTELEM block[6][64],
00834                        int motion_x, int motion_y);
00835 int msmpeg4_decode_picture_header(MpegEncContext * s);
00836 int msmpeg4_decode_ext_header(MpegEncContext * s, int buf_size);
00837 int ff_msmpeg4_decode_init(AVCodecContext *avctx);
00838 void ff_msmpeg4_encode_init(MpegEncContext *s);
00839 int ff_wmv2_decode_picture_header(MpegEncContext * s);
00840 int ff_wmv2_decode_secondary_picture_header(MpegEncContext * s);
00841 void ff_wmv2_add_mb(MpegEncContext *s, DCTELEM block[6][64], uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr);
00842 void ff_mspel_motion(MpegEncContext *s,
00843                                uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
00844                                uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
00845                                int motion_x, int motion_y, int h);
00846 int ff_wmv2_encode_picture_header(MpegEncContext * s, int picture_number);
00847 void ff_wmv2_encode_mb(MpegEncContext * s,
00848                        DCTELEM block[6][64],
00849                        int motion_x, int motion_y);
00850 
00851 #endif /* AVCODEC_MPEGVIDEO_H */
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