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quantize-pvt.h
资源名称：NETVIDEO.rar [点击查看]
上传用户：sun1608
上传日期：2007-02-02
资源大小：6116k
文件大小：4k
源码类别：
流媒体/Mpeg4/MP4
开发平台：
Visual C++
- #ifndef LOOP_PVT_H
- #define LOOP_PVT_H
- #define IXMAX_VAL 8206 /* ix always <= 8191+15. see count_bits() */
- #define PRECALC_SIZE (IXMAX_VAL+2)
- extern FLOAT masking_lower;
- extern int convert_mdct, convert_psy, reduce_sidechannel;
- extern unsigned nr_of_sfb_block[6][3][4];
- extern int pretab[21];
- struct scalefac_struct
- {
- int l[1+SBMAX_l];
- int s[1+SBMAX_s];
- };
- extern struct scalefac_struct scalefac_band;
- extern struct scalefac_struct sfBandIndex[6];
- extern FLOAT8 pow43[PRECALC_SIZE];
- #define Q_MAX 256
- extern FLOAT8 pow20[Q_MAX];
- extern FLOAT8 ipow20[Q_MAX];
- #ifdef RH_ATH
- extern FLOAT8 ATH_mdct_long[576], ATH_mdct_short[192];
- #endif
- FLOAT8 ATHformula(lame_global_flags *gfp,FLOAT8 f);
- void compute_ath(lame_global_flags *gfp,FLOAT8 ATH_l[SBPSY_l],FLOAT8 ATH_s[SBPSY_l]);
- void ms_convert(FLOAT8 xr[2][576],FLOAT8 xr_org[2][576]);
- void on_pe(lame_global_flags *gfp,FLOAT8 pe[2][2],III_side_info_t *l3_side,
- int targ_bits[2],int mean_bits, int gr);
- void reduce_side(int targ_bits[2],FLOAT8 ms_ener_ratio,int mean_bits);
- void outer_loop( lame_global_flags *gfp,
- FLOAT8 xr[576], /*vector of the magnitudees of the spectral values */
- int bits,
- FLOAT8 noise[4],
- III_psy_xmin *l3_xmin, /* the allowed distortion of the scalefactor */
- int l3_enc[576], /* vector of quantized values ix(0..575) */
- III_scalefac_t *scalefac, /* scalefactors */
- gr_info *,
- FLOAT8 xfsf[4][SBPSY_l],
- int ch);
- void iteration_init( lame_global_flags *gfp,III_side_info_t *l3_side, int l3_enc[2][2][576]);
- int inner_loop( lame_global_flags *gfp,FLOAT8 xrpow[576],
- int l3_enc[576],
- int max_bits,
- gr_info *cod_info);
- int calc_xmin( lame_global_flags *gfp,FLOAT8 xr[576],
- III_psy_ratio *ratio,
- gr_info *cod_info,
- III_psy_xmin *l3_xmin);
- int scale_bitcount( III_scalefac_t *scalefac, gr_info *cod_info);
- int scale_bitcount_lsf( III_scalefac_t *scalefac, gr_info *cod_info);
- int calc_noise1( FLOAT8 xr[576],
- int ix[576],
- gr_info *cod_info,
- FLOAT8 xfsf[4][SBPSY_l],
- FLOAT8 distort[4][SBPSY_l],
- III_psy_xmin *l3_xmin,
- III_scalefac_t *,
- FLOAT8 *noise, FLOAT8 *tot_noise, FLOAT8 *max_noise);
- int loop_break( III_scalefac_t *scalefac, gr_info *cod_info);
- void amp_scalefac_bands(FLOAT8 xrpow[576],
- gr_info *cod_info,
- III_scalefac_t *scalefac,
- FLOAT8 distort[4][SBPSY_l]);
- void quantize_xrpow( FLOAT8 xr[576],
- int ix[576],
- gr_info *cod_info );
- void quantize_xrpow_ISO( FLOAT8 xr[576],
- int ix[576],
- gr_info *cod_info );
- int
- new_choose_table( int ix[576],
- unsigned int begin,
- unsigned int end, int * s );
- int bin_search_StepSize2(lame_global_flags *gfp,int desired_rate, int start, int ix[576],
- FLOAT8 xrspow[576], gr_info * cod_info);
- int count_bits(lame_global_flags *gfp,int *ix, FLOAT8 xr[576], gr_info *cod_info);
- int quant_compare(int type,
- int best_over,FLOAT8 best_tot_noise,FLOAT8 best_over_noise,FLOAT8 best_max_over,
- int over,FLOAT8 tot_noise, FLOAT8 over_noise,FLOAT8 max_noise);
- int VBR_compare(
- int best_over,FLOAT8 best_tot_noise,FLOAT8 best_over_noise,FLOAT8 best_max_over,
- int over,FLOAT8 tot_noise, FLOAT8 over_noise,FLOAT8 max_noise);
- void best_huffman_divide(int gr, int ch, gr_info *cod_info, int *ix);
- void best_scalefac_store(lame_global_flags *gfp,int gr, int ch,
- int l3_enc[2][2][576],
- III_side_info_t *l3_side,
- III_scalefac_t scalefac[2][2]);
- int init_outer_loop(
- lame_global_flags *gfp,
- FLOAT8 xr[576], /* could be L/R OR MID/SIDE */
- gr_info *cod_info);
- #define LARGE_BITS 100000
- #endif
