ref: e0831a18c4ff69f2e676f1e9ce0775ffdaf4571b
dir: /block.h/
/************************* MPEG-2 NBC Audio Decoder **************************
* *
"This software module was originally developed by
AT&T, Dolby Laboratories, Fraunhofer Gesellschaft IIS
and edited by Takashi Koike (Sony Corporation),
Yasuhiro Toguri(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 BLOCK_H
#define BLOCK_H 1
#include "dolby_def.h"
#define IN_DATATYPE double
#define OUT_DATATYPE double
#define BLOCK_LEN_LONG 1024
#define BLOCK_LEN_MEDIUM 512
#define BLOCK_LEN_SHORT 128
#define BLOCK_LEN_LONG_S 960
#define BLOCK_LEN_MEDIUM_S 480
#define BLOCK_LEN_SHORT_S 120
#define BLOCK_LEN_LONG_SSR 256 /* 980129 added for SSR */
#define BLOCK_LEN_SHORT_SSR 32 /* 980129 added for SSR */
#define NWINLONG (BLOCK_LEN_LONG)
#define ALFALONG 4.0
#define NWINSHORT (BLOCK_LEN_SHORT)
#define ALFASHORT 7.0
#define NWINFLAT (NWINLONG) /* flat params */
#define NWINADV (NWINLONG-NWINSHORT) /* Advanced flat params */
#define NFLAT ((NWINFLAT-NWINSHORT)/2)
#define NADV0 ((NWINADV-NWINSHORT)/2)
typedef enum {
WS_FHG, WS_DOLBY, N_WINDOW_SHAPES
}
Window_shape;
/* YT 970615 for Son_PP */
typedef enum {
MOVERLAPPED,
MNON_OVERLAPPED
}
Mdct_in,Imdct_out;
typedef enum {
WT_LONG,
WT_SHORT,
WT_FLAT,
WT_ADV, /* Advanced flat window */
N_WINDOW_TYPES
}
WINDOW_TYPE_AAC;
typedef enum { /* ADVanced transform types */
LONG_BLOCK,
START_BLOCK,
SHORT_BLOCK,
STOP_BLOCK,
START_ADV_BLOCK,
STOP_ADV_BLOCK,
START_FLAT_BLOCK,
STOP_FLAT_BLOCK,
N_BLOCK_TYPES
}
BLOCK_TYPE;
typedef enum { /* Advanced window sequence (frame) types */
ONLY_LONG,
LONG_START,
LONG_STOP,
SHORT_START,
SHORT_STOP,
EIGHT_SHORT,
SHORT_EXT_STOP,
NINE_SHORT,
OLD_START,
OLD_STOP,
N_WINDOW_SEQUENCES
}
WINDOW_SEQUENCE;
#endif /* BLOCK_H */