www.pudn.com > ngcd080s.zip > CDAUDIO.C
/**************************************
**** CDAUDIO.C - CD-DA Player ****
**************************************/
//-- Include files -----------------------------------------------------------
#include
#include
#include
#include
#include
#include
#include "../gui/gui.h"
#include "../gui/rsc.h"
#include "../ym2610/adpcm.h"
#include "../ym2610/ym2610.h"
//-- Definitions -------------------------------------------------------------
// Il s'agit d'une bidouille infame pour que DJGPP n'aligne pas les membres
// unsigned short des structures sur des offsets pairs. (Ce qui bien sur fait
// tout foirer et que j'ai mis deux jours a decouvrir!!)
#define DW(id) (*((unsigned short *)(&id)))
#define DD(id) (*((unsigned int *)(&id)))
typedef unsigned char BYTE;
typedef struct {
BYTE b1;
BYTE b2;
} WORD;
typedef struct {
BYTE b1;
BYTE b2;
BYTE b3;
BYTE b4;
} DWORD;
//-- Structures --------------------------------------------------------------
typedef struct {
BYTE len1;
BYTE unit;
BYTE command;
WORD status;
BYTE reserved[8];
BYTE descriptor;
WORD adr_off;
WORD adr_seg;
WORD len2;
WORD secnum;
WORD ptr_off;
WORD ptr_seg;
} IOCTLI;
typedef struct {
BYTE control;
BYTE lowest;
BYTE highest;
DWORD total;
} DISKINFO;
typedef struct {
BYTE control;
BYTE track;
DWORD loc;
BYTE info;
} TRACKINFO;
typedef struct {
BYTE len;
BYTE unit;
BYTE command;
WORD status;
BYTE reserved[8];
BYTE mode;
DWORD loc;
DWORD secnum;
} PLAYREQ;
typedef struct {
BYTE len;
BYTE unit;
BYTE command;
WORD status;
BYTE reserved[8];
} STOPREQ;
typedef struct {
BYTE len;
BYTE unit;
BYTE command;
WORD status;
BYTE reserved[8];
BYTE media;
WORD adr_off;
WORD adr_seg;
WORD bytes;
WORD sector;
DWORD volid;
} VOLREQ;
typedef struct {
BYTE mode;
BYTE input0;
BYTE volume0;
BYTE input1;
BYTE volume1;
BYTE input2;
BYTE volume2;
BYTE input3;
BYTE volume3;
} VOLINFO;
typedef struct {
BYTE control;
BYTE mode;
DWORD loc;
} HEADINFO;
//-- Imported Variables ------------------------------------------------------
extern char *global_error[80];
//-- Private Variables -------------------------------------------------------
static int cdda_min_track;
static int cdda_max_track;
static int cdda_disk_length;
static int cdda_track_start;
static int cdda_track_end;
static int cdda_loop_counter;
//-- Public Variables --------------------------------------------------------
__dpmi_regs _regs;
int cdda_first_drive;
int cdda_nb_of_drives;
int cdda_current_drive;
int cdda_current_track;
int cdda_playing;
char drive_list[26];
int nb_of_drives;
int cdda_autoloop;
int cdda_volume;
//-- Function Prototypes -----------------------------------------------------
int cdda_init(void);
int cdda_play(int);
void cdda_stop(void);
void cdda_resume(void);
int cdda_get_volume(void);
void cdda_set_volume(int);
void cdda_shutdown(void);
void cdda_loop_check(void);
int cdda_get_disk_info(void);
void cdda_build_drive_list(void);
void audio_setup(void);
extern DATAFILE *rsc;
DIALOG audio_options[] =
{
/* (dialog proc) (x) (y) (w) (h) (fg) (bg) (key) (flags) (d1) (d2) (dp) */
{d_neo_border_proc, 0, 0, 240, 100, 0x0000, 0x0000, 0, 0, 0, 0, NULL},
{d_neo_fbox_proc, 2, 2, 235, 8, 0x0000, 0x10E3, 0, 0, 0, 0, NULL},
{d_text_proc, 10, 3, 0, 0, 0xFFFF, 0x10E3, 0, 0, 0, 0, "Audio Options"},
{d_text_proc, 10, 20, 0, 0, 0xFFFF, 0x9596, 0, 0, 0, 0, "CDDA Volume"},
{d_neo_slider_proc, 10, 30, 220, 10, 0xFFFF, 0x9596, 0, 0, 255, 0, NULL},
{d_text_proc, 10, 45, 0, 0, 0xFFFF, 0x9596, 0, 0, 0, 0, "Sound Volume"},
{d_neo_slider_proc, 10, 55, 220, 10, 0xFFFF, 0x9596, 0, 0, 255, 0, NULL},
{d_neo_button_proc, 87, 70, 65, 15, 0x0000, 0x0000, 'o', D_EXIT, 0, 0, "&OK"},
{NULL, 0, 0, 0, 0, 0x0000, 0x0000, 0, 0, 0, 0, NULL}
};
//----------------------------------------------------------------------------
int cdda_init(void)
{
int i, j;
IOCTLI cmd;
DISKINFO di;
strcpy((char*)global_error, "");
cdda_min_track = cdda_max_track = 0;
cdda_current_track = 0;
cdda_playing = 0;
cdda_loop_counter = 0;
memset(&_regs, 0, sizeof(_regs));
_regs.d.eax = 0x1500;
_regs.d.ebx = 0;
if (__dpmi_int(0x2f, &_regs) == 0) {
cdda_first_drive = _regs.d.ecx;
cdda_nb_of_drives = _regs.d.ebx;
cdda_build_drive_list();
if (cdda_current_drive==-1)
cdda_current_drive = cdda_first_drive;
else
{
j = 0;
for(i = 0;i < nb_of_drives;i++)
{
if (cdda_current_drive == drive_list[i])
j = 1;
}
if (j==0)
cdda_current_drive = cdda_first_drive;
}
cdda_get_disk_info();
cdda_volume = get_config_int(NULL, "cddavol", 220);
cdda_set_volume(cdda_volume);
return 1;
}
strcpy((char *)global_error, "MSCDEX not present !");
return 0;
}
//----------------------------------------------------------------------------
int cdda_get_disk_info(void)
{
IOCTLI cmd;
DISKINFO di;
cmd.len1 = sizeof(IOCTLI);
cmd.unit = 0;
cmd.command = 3;
cmd.descriptor = 0;
DW(cmd.adr_seg) = (__tb>>4);
DW(cmd.adr_off) = sizeof(IOCTLI);
DW(cmd.len2) = 7;
DW(cmd.secnum) = 0;
DW(cmd.ptr_seg) = 0;
DW(cmd.ptr_off) = 0;
di.control = 10;
dosmemput(&cmd, sizeof(IOCTLI), __tb);
dosmemput(&di, sizeof(DISKINFO), (__tb + sizeof(IOCTLI)));
memset(&_regs, 0, sizeof(_regs));
_regs.x.es = _regs.x.ds = _regs.x.cs = (__tb>>4);
_regs.x.bx = 0;
_regs.x.cx = cdda_current_drive;
_regs.x.ax = 0x1510;
__dpmi_int(0x2f, &_regs);
dosmemget(__tb, sizeof(IOCTLI), &cmd);
dosmemget((__tb + sizeof(IOCTLI)), sizeof(DISKINFO), &di);
cdda_min_track = cdda_max_track = 0;
if (DW(cmd.status)&0x8000)
return 0;
cdda_min_track = di.lowest;
cdda_max_track = di.highest;
cdda_disk_length = DD(di.total);
return 1;
}
//----------------------------------------------------------------------------
void cdda_build_drive_list(void)
{
int i;
nb_of_drives = 0;
for(i=0;i<26;i++)
{
_regs.x.ax = 0x150B;
_regs.x.cx = i;
__dpmi_int(0x2F, &_regs);
if (_regs.x.ax != 0)
{
drive_list[nb_of_drives] = i;
nb_of_drives++;
}
}
}
//----------------------------------------------------------------------------
int cdda_play(int track)
{
IOCTLI cmd;
TRACKINFO trk;
PLAYREQ prq;
char h, m, s;
char h2, m2, s2;
if ((trackcdda_max_track))
return 0;
cmd.len1 = sizeof(IOCTLI);
cmd.unit = 0;
cmd.command = 3;
cmd.descriptor=0;
DW(cmd.adr_seg) = (__tb>>4);
DW(cmd.adr_off) = sizeof(IOCTLI);
DW(cmd.len2) = 7;
DW(cmd.secnum) = 0;
DW(cmd.ptr_seg) = 0;
DW(cmd.ptr_off) = 0;
trk.control = 11;
trk.track = track;
dosmemput(&cmd, sizeof(IOCTLI), __tb);
dosmemput(&trk, sizeof(TRACKINFO), (__tb + sizeof(IOCTLI)));
memset(&_regs, 0, sizeof(_regs));
_regs.x.es = _regs.x.ds = _regs.x.cs = (__tb>>4);
_regs.x.bx = 0;
_regs.x.cx = cdda_current_drive;
_regs.x.ax = 0x1510;
__dpmi_int(0x2f, &_regs);
dosmemget(__tb, sizeof(IOCTLI), &cmd);
dosmemget((__tb + sizeof(IOCTLI)), sizeof(TRACKINFO), &trk);
if (DW(cmd.status)&0x8000)
return 0;
cdda_track_start = DD(trk.loc);
if (track==cdda_max_track)
cdda_track_end = cdda_disk_length ;
else {
cmd.len1 = sizeof(IOCTLI);
cmd.unit = 0;
cmd.command = 3;
cmd.descriptor=0;
DW(cmd.adr_seg) = (__tb>>4);
DW(cmd.adr_off) = sizeof(IOCTLI);
DW(cmd.len2) = 7;
DW(cmd.secnum) = 0;
DW(cmd.ptr_seg) = 0;
DW(cmd.ptr_off) = 0;
trk.control = 11;
trk.track = track+1;
dosmemput(&cmd, sizeof(IOCTLI), __tb);
dosmemput(&trk, sizeof(TRACKINFO), (__tb + sizeof(IOCTLI)));
memset(&_regs, 0, sizeof(_regs));
_regs.x.es = _regs.x.ds = _regs.x.cs = (__tb>>4);
_regs.x.bx = 0;
_regs.x.cx = cdda_current_drive;
_regs.x.ax = 0x1510;
__dpmi_int(0x2f, &_regs);
dosmemget(__tb, sizeof(IOCTLI), &cmd);
dosmemget((__tb + sizeof(IOCTLI)), sizeof(TRACKINFO), &trk);
if (DW(cmd.status)&0x8000)
return 0;
cdda_track_end = DD(trk.loc);
}
h = cdda_track_end>>24;
m = cdda_track_end>>16;
s = cdda_track_end>>8;
s -= 1;
if (s<0) {
m--;
s += 60;
if (m<0) {
h--;
m+=60;
}
}
cdda_track_end = (h<<24) + (m<<16) + (s<<8);
h2 = cdda_track_start>>24;
m2 = cdda_track_start>>16;
s2 = cdda_track_start>>8;
h -= h2;
m -= m2;
s -= s2;
if (s<0) {
s += 60;
m--;
}
if (m<0) {
m += 60;
h--;
}
prq.len = 22;
prq.unit = 0;
prq.command = 132;
prq.mode = 1;
DD(prq.loc) = cdda_track_start;
DD(prq.secnum) = (h*270000) + (m*4500) + (s*75);
cdda_loop_counter = (h*216000) + (m*3600) + (s*60);
dosmemput(&prq, sizeof(PLAYREQ), __tb);
memset(&_regs, 0, sizeof(_regs));
_regs.x.es = _regs.x.ds = _regs.x.cs = (__tb>>4);
_regs.x.bx = 0;
_regs.x.cx = cdda_current_drive;
_regs.x.ax = 0x1510;
__dpmi_int(0x2f, &_regs);
dosmemget(__tb, sizeof(PLAYREQ), &prq);
if (DW(cmd.status)&0x8000)
return 0;
cdda_current_track = track;
cdda_playing = 1;
return 1;
}
//----------------------------------------------------------------------------
void cdda_stop(void)
{
STOPREQ cmd;
cmd.len = 13;
cmd.unit = 0;
cmd.command = 133;
dosmemput(&cmd, sizeof(STOPREQ), __tb);
memset(&_regs, 0, sizeof(_regs));
_regs.x.es = _regs.x.ds = _regs.x.cs = (__tb>>4);
_regs.x.bx = 0;
_regs.x.cx = cdda_current_drive;
_regs.x.ax = 0x1510;
__dpmi_int(0x2f, &_regs);
cdda_playing = 0;
}
//----------------------------------------------------------------------------
void cdda_resume(void)
{
STOPREQ cmd;
cmd.len = 13;
cmd.unit = 0;
cmd.command = 136;
dosmemput(&cmd, sizeof(STOPREQ), __tb);
memset(&_regs, 0, sizeof(_regs));
_regs.x.es = _regs.x.ds = _regs.x.cs = (__tb>>4);
_regs.x.bx = 0;
_regs.x.cx = cdda_current_drive;
_regs.x.ax = 0x1510;
__dpmi_int(0x2f, &_regs);
cdda_playing = 1;
}
//----------------------------------------------------------------------------
void cdda_shutdown(void)
{
cdda_stop();
}
//----------------------------------------------------------------------------
void cdda_loop_check(void)
{
if (cdda_playing==1) {
cdda_loop_counter--;
if (cdda_loop_counter==0) {
if (cdda_autoloop)
cdda_play(cdda_current_track);
else
cdda_stop();
}
}
}
//----------------------------------------------------------------------------
int cdda_get_volume(void)
{
VOLREQ cmd;
VOLINFO vol;
cmd.len = sizeof(VOLREQ);
cmd.unit = 0;
cmd.command = 3;
cmd.media = 0;
DW(cmd.sector) = 0;
DD(cmd.volid) = 0;
DW(cmd.adr_seg) = (__tb>>4);
DW(cmd.adr_off) = sizeof(VOLREQ);
DW(cmd.bytes) = 9;
vol.mode = 4;
dosmemput(&cmd, sizeof(VOLREQ), __tb);
dosmemput(&vol, sizeof(VOLINFO), (__tb + sizeof(VOLREQ)));
memset(&_regs, 0, sizeof(_regs));
_regs.x.es = _regs.x.ds = _regs.x.cs = (__tb>>4);
_regs.x.bx = 0;
_regs.x.cx = cdda_current_drive;
_regs.x.ax = 0x1510;
__dpmi_int(0x2f, &_regs);
dosmemget(__tb, sizeof(VOLREQ), &cmd);
dosmemget((__tb + sizeof(VOLREQ)), sizeof(VOLINFO), &vol);
return vol.volume0;
}
//----------------------------------------------------------------------------
void cdda_set_volume(int volume)
{
VOLREQ cmd;
VOLINFO vol;
vol.mode = 3;
vol.input0 = 0;
vol.input1 = 1;
vol.input2 = 2;
vol.input3 = 3;
vol.volume0 = volume;
vol.volume1 = volume;
vol.volume2 = volume;
vol.volume3 = volume;
cmd.len = sizeof(VOLREQ);
cmd.unit = 0;
cmd.command = 12;
cmd.media = 0;
DW(cmd.adr_seg) = (__tb>>4);
DW(cmd.adr_off) = sizeof(VOLREQ);
DW(cmd.bytes) = 9;
dosmemput(&cmd, sizeof(VOLREQ), __tb);
dosmemput(&vol, sizeof(VOLINFO), (__tb + sizeof(VOLREQ)));
memset(&_regs, 0, sizeof(_regs));
_regs.x.es = _regs.x.ds = _regs.x.cs = (__tb>>4);
_regs.x.bx = 0;
_regs.x.cx = cdda_current_drive;
_regs.x.ax = 0x1510;
__dpmi_int(0x2f, &_regs);
dosmemget(__tb, sizeof(VOLREQ), &cmd);
dosmemget((__tb + sizeof(VOLREQ)), sizeof(VOLINFO), &vol);
}
//----------------------------------------------------------------------------
void audio_setup(void)
{
audio_options[4].dp = rsc[SLIDER].dat;
audio_options[4].d2 = cdda_get_volume();
audio_options[6].dp = rsc[SLIDER].dat;
audio_options[6].d2 = sound_vol;
centre_dialog(audio_options);
popup_dialog(audio_options, 0);
cdda_set_volume(audio_options[4].d2);
set_config_int(NULL, "cddavol", audio_options[4].d2);
sound_vol = audio_options[6].d2;
set_config_int(NULL, "soundvol", audio_options[6].d2);
}