/* *      encoder.h include file * *      Copyright (c) 2000 Mark Taylor * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */  #ifndef LAME_ENCODER_H#define LAME_ENCODER_H /*************************************************************************  encoder and decoder delays************************************************************************/ /*  * layer III enc->dec delay:  1056 (1057?)   (observed) * layer  II enc->dec delay:   480  (481?)   (observed) * * polyphase 256-16             (dec or enc)        = 240 * mdct      256+32  (9*32)     (dec or enc)        = 288 * total:    512+16 * * My guess is that delay of polyphase filterbank is actualy 240.5 * (there are technical reasons for this, see postings in mp3encoder). * So total Encode+Decode delay = ENCDELAY + 528 + 1 */ /*  * ENCDELAY  The encoder delay.   * * Minimum allowed is MDCTDELAY (see below) *   * The first 96 samples will be attenuated, so using a value less than 96 * will result in corrupt data for the first 96-ENCDELAY samples. * * suggested: 576 * set to 1160 to sync with FhG. */ #define ENCDELAY      576 /*  * delay of the MDCT used in mdct.c * original ISO routines had a delay of 528!   * Takehiro's routines:  */ #define MDCTDELAY     48  #define FFTOFFSET     (224+MDCTDELAY) /* * Most decoders, including the one we use, have a delay of 528 samples.   */ #define DECDELAY      528  /* number of subbands */#define SBLIMIT       32 /* parition bands bands */#define CBANDS        64 /* number of critical bands/scale factor bands where masking is computed*/#define SBPSY_l       21#define SBPSY_s       12 /* total number of scalefactor bands encoded */#define SBMAX_l       22#define SBMAX_s       13   /* FFT sizes */#define BLKSIZE       1024#define HBLKSIZE      (BLKSIZE/2 + 1)#define BLKSIZE_s     256#define HBLKSIZE_s    (BLKSIZE_s/2 + 1)  /* #define switch_pe        1800 */#define NORM_TYPE     0#define START_TYPE    1#define SHORT_TYPE    2#define STOP_TYPE     3 /*  * Mode Extention: * When we are in stereo mode, there are 4 possible methods to store these * two channels. The stereo modes -m? are using a subset of them. * *  -ms: MPG_MD_LR_LR *  -mj: MPG_MD_LR_LR and MPG_MD_MS_LR *  -mf: MPG_MD_MS_LR *  -mi: all */ #define MPG_MD_LR_LR  0#define MPG_MD_LR_I   1#define MPG_MD_MS_LR  2#define MPG_MD_MS_I   3  #include "machine.h"#include "lame.h" int  lame_encode_mp3_frame (        lame_global_flags*  const gfp,        sample_t*           inbuf_l,        sample_t*           inbuf_r,        unsigned char*      mp3buf, 	int                 mp3buf_size ); #endif /* LAME_ENCODER_H */