www.pudn.com > mp3rar.rar > port.h
/************************* MPEG-2 NBC Audio Decoder ************************** * * "This software module was originally developed by AT&T, Dolby Laboratories, Fraunhofer Gesellschaft IIS and edited by Yoshiaki Oikawa (Sony Corporaion), Mitsuyuki Hatanaka (Sony Corporation), in the course of development of the MPEG-2 NBC/MPEG-4 Audio standard ISO/IEC 13818-7, 14496-1,2 and 3. This software module is an implementation of a part of one or more MPEG-2 NBC/MPEG-4 Audio tools as specified by the MPEG-2 NBC/MPEG-4 Audio standard. ISO/IEC gives users of the MPEG-2 NBC/MPEG-4 Audio standards free license to this software module or modifications thereof for use in hardware or software products claiming conformance to the MPEG-2 NBC/MPEG-4 Audio standards. Those intending to use this software module in hardware or software products are advised that this use may infringe existing patents. The original developer of this software module and his/her company, the subsequent editors and their companies, and ISO/IEC have no liability for use of this software module or modifications thereof in an implementation. Copyright is not released for non MPEG-2 NBC/MPEG-4 Audio conforming products.The original developer retains full right to use the code for his/her own purpose, assign or donate the code to a third party and to inhibit third party from using the code for non MPEG-2 NBC/MPEG-4 Audio conforming products. This copyright notice must be included in all copies or derivative works." Copyright(c)1996. * * ****************************************************************************/ #ifndef _port_h_ #define _port_h_ #ifdef __unix__ #define min(a,b) ( (a) < (b) ? (a) : (b) ) #endif int OpenInputFile(char *fn); int ReadInputFile(); void CloseInputFile(); unsigned long GetInputLength (); int byte_align(); int ch_index(MC_Info *mip, int cpe, int tag); void check_mc_info(MC_Info *mip, int new_config); int chn_config(int id, int tag, int common_window, MC_Info *mip); void clr_tns( Info *info, TNS_frame_info *tns_frame_info ); #if (CChans > 0) void coupling(Info *info, MC_Info *mip, Float **coef, Float **cc_coef, Float *cc_gain[CChans][Chans], int ch, int cc_dom, int cc_dep); #endif int decode_huff_cw(Huffman *h); int enter_chn(int cpe, int tag, char position, int common_window, MC_Info *mip); int enter_mc_info(MC_Info *mip, ProgConfig *pcp); Float esc_iquant(int q); int get_adif_header(void); void get_ics_info(byte *win, byte *wshape, byte *group,byte *max_sfb, int *lpflag, int *prstflag , NOK_LT_PRED_STATUS *nok_ltp_status); int get_prog_config(ProgConfig *p); void get_sign_bits(int *q, int n); int get_tns( Info *info, TNS_frame_info *tns_frame_info ); long getbits(int n); #if (CChans > 0) int getcc(MC_Info *mip, byte *cc_wnd, Wnd_Shape *cc_wnd_shape, Float **cc_coef,Float *cc_gain[CChans][Chans]); #endif int getescape(int q); void getfill(void); void getgroup(Info *info, byte *group); int getics(Info *info, int common_window, byte *win, byte *wshape, byte *group, byte *max_sfb, int *lpflag, int *prstflag, byte *cb_map, Float *coef, short *global_gain , short *factors, NOK_LT_PRED_STATUS *nok_ltp_status, TNS_frame_info *tns ); int getmask(Info *info, byte *group, byte max_sfb, byte *mask); long getshort(void); void huffbookinit(void); int huffcb(byte *sect, int *sectbits, int tot_sfb, int sfb_per_sbk, byte max_sfb); int huffdecode(int id, MC_Info *mip, byte *win, Wnd_Shape *wshape, byte **cb_map, short **factors, byte **group, byte *hasmask, byte **mask, byte *max_sfb, int **lpflag, int **prstflag, NOK_LT_PRED_STATUS **nok_ltp, TNS_frame_info **tns, Float **coef); int hufffac(Info *info, byte *group, int nsect, byte *sect,short global_gain, short *factors); int huffspec(Info *info, int nsect, byte *sect, short *factors, Float *coef); void hufftab(Hcb *hcb, Huffman *hcw, int dim, int lav, int signed_cb); void infoinit(SR_Info *sip); void do_init(void); void init_cc(void); void initio(char *filename); #if (CChans > 0) void ind_coupling(MC_Info *mip, byte *wnd, Wnd_Shape *wnd_shape, byte *cc_wnd, Wnd_Shape *cc_wnd_shape, Float *cc_coef[CChans], Float *cc_state[CChans]); #endif void intensity(MC_Info *mip, Info *info, int widx, int ch, byte *group, byte *cb_map, short *factors, int *lpflag, Float *coef[Chans]); void main(int argc, char *argv[]); int max_dep_cc(int nch); int max_indep_cc(int nch); int max_lfe_chn(int nch); void map_mask(Info *info, byte *group, byte *mask, byte *cb_map); void predinit(void); void reset_mc_info(MC_Info *mip); void restarttio(void); void startblock(); void synt(Info *info, byte *group, byte *mask, Float *right, Float *left); void tns_ar_filter( Float *spec, int size, int inc, Float *lpc, int order ); void tns_decode_coef( int order, int coef_res, short *coef, Float *a ); void tns_decode_subblock(Float *spec, int nbands, short *sfb_top, int islong, TNSinfo *tns_info); int tns_max_bands(int win); int tns_max_order(int islong); void unpack_idx(int *qp, int idx, Hcb *hcb); void pns(MC_Info *mip, Info *info, int widx, int ch, byte *group, byte *cb_map, short *factors, int *lpflag, Float *coef[Chans] ); #endif /* _port_h_ */