mirror of
https://github.com/RetroDECK/Supermodel.git
synced 2024-11-27 08:05:41 +00:00
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
|
/* this file is a part of amp software, (C) tomislav uzelac 1996,1997
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* getdata.h
|
||
|
|
*
|
||
|
|
* tomislav uzelac Apr 1996
|
||
|
|
*/
|
||
|
|
|
||
|
|
extern int decode_scalefactors(struct SIDE_INFO *info,struct AUDIO_HEADER *header,int gr,int ch);
|
||
|
|
|
||
|
|
extern int is_max[21];
|
||
|
|
extern int intensity_scale;
|
||
|
|
|
||
|
|
#ifdef GETDATA
|
||
|
|
|
||
|
|
static char t_slen1[16]={0,0,0,0,3,1,1,1,2,2,2,3,3,3,4,4};
|
||
|
|
static char t_slen2[16]={0,1,2,3,0,1,2,3,1,2,3,1,2,3,2,3};
|
||
|
|
|
||
|
|
int is_max[21]; /* the maximum value of is_pos. for short blocks is_max[sfb=0] == is_max[6],
|
||
|
|
* it's sloppy but i'm sick of waisting storage. blaah...
|
||
|
|
*/
|
||
|
|
int intensity_scale;
|
||
|
|
|
||
|
|
int decode_scalefactors(struct SIDE_INFO *info,struct AUDIO_HEADER *header,int gr,int ch);
|
||
|
|
|
||
|
|
/* my implementation of MPEG2 scalefactor decoding is, admitably, horrible
|
||
|
|
* anyway, just take a look at pg.18 of MPEG2 specs, and you'll know what
|
||
|
|
* this is all about
|
||
|
|
*/
|
||
|
|
static const char spooky_table[2][3][3][4]={
|
||
|
|
{
|
||
|
|
{ {6,5,5,5}, {9,9,9,9}, {6,9,9,9} },
|
||
|
|
{ {6,5,7,3}, {9,9,12,6}, {6,9,12,6}},
|
||
|
|
{ {11,10,0,0}, {18,18,0,0}, {15,18,0,0}}
|
||
|
|
},
|
||
|
|
{
|
||
|
|
{ {7,7,7,0}, {12,12,12,0}, {6,15,12,0}},
|
||
|
|
{ {6,6,6,3}, {12,9,9,6}, {6,12,9,6}},
|
||
|
|
{ {8,8,5,0}, {15,12,9,0}, {6,18,9,0}}
|
||
|
|
}};
|
||
|
|
|
||
|
|
#endif /* GETDATA */
|