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https://git.code.sf.net/p/quake/newtree
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Rename of cd_audio.c to cd_dos.c. (cvs needs a move command!)
This commit is contained in:
Ragnvald Maartmann-Moe IV
parent
c2a69bfec3
commit
09354ee7ca
1 changed files with 0 additions and 0 deletions
857
source/cd_dos.c
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857
source/cd_dos.c
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/*
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cd_audio.c
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(description)
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <dpmi.h>
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#include "dosisms.h"
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extern cvar_t *bgmvolume;
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#define ADDRESS_MODE_HSG 0
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#define ADDRESS_MODE_RED_BOOK 1
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#define STATUS_ERROR_BIT 0x8000
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#define STATUS_BUSY_BIT 0x0200
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#define STATUS_DONE_BIT 0x0100
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#define STATUS_ERROR_MASK 0x00ff
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#define ERROR_WRITE_PROTECT 0
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#define ERROR_UNKNOWN_UNIT 1
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#define ERROR_DRIVE_NOT_READY 2
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#define ERROR_UNKNOWN_COMMAND 3
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#define ERROR_CRC_ERROR 4
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#define ERROR_BAD_REQUEST_LEN 5
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#define ERROR_SEEK_ERROR 6
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#define ERROR_UNKNOWN_MEDIA 7
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#define ERROR_SECTOR_NOT_FOUND 8
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#define ERROR_OUT_OF_PAPER 9
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#define ERROR_WRITE_FAULT 10
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#define ERROR_READ_FAULT 11
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#define ERROR_GENERAL_FAILURE 12
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#define ERROR_RESERVED_13 13
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#define ERROR_RESERVED_14 14
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#define ERROR_BAD_DISK_CHANGE 15
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#define COMMAND_READ 3
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#define COMMAND_WRITE 12
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#define COMMAND_PLAY_AUDIO 132
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#define COMMAND_STOP_AUDIO 133
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#define COMMAND_RESUME_AUDIO 136
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#define READ_REQUEST_AUDIO_CHANNEL_INFO 4
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#define READ_REQUEST_DEVICE_STATUS 6
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#define READ_REQUEST_MEDIA_CHANGE 9
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#define READ_REQUEST_AUDIO_DISK_INFO 10
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#define READ_REQUEST_AUDIO_TRACK_INFO 11
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#define READ_REQUEST_AUDIO_STATUS 15
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#define WRITE_REQUEST_EJECT 0
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#define WRITE_REQUEST_RESET 2
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#define WRITE_REQUEST_AUDIO_CHANNEL_INFO 3
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#define STATUS_DOOR_OPEN 0x00000001
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#define STATUS_DOOR_UNLOCKED 0x00000002
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#define STATUS_RAW_SUPPORT 0x00000004
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#define STATUS_READ_WRITE 0x00000008
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#define STATUS_AUDIO_SUPPORT 0x00000010
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#define STATUS_INTERLEAVE_SUPPORT 0x00000020
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#define STATUS_BIT_6_RESERVED 0x00000040
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#define STATUS_PREFETCH_SUPPORT 0x00000080
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#define STATUS_AUDIO_MANIPLUATION_SUPPORT 0x00000100
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#define STATUS_RED_BOOK_ADDRESS_SUPPORT 0x00000200
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#define MEDIA_NOT_CHANGED 1
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#define MEDIA_STATUS_UNKNOWN 0
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#define MEDIA_CHANGED -1
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#define AUDIO_CONTROL_MASK 0xd0
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#define AUDIO_CONTROL_DATA_TRACK 0x40
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#define AUDIO_CONTROL_AUDIO_2_TRACK 0x00
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#define AUDIO_CONTROL_AUDIO_2P_TRACK 0x10
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#define AUDIO_CONTROL_AUDIO_4_TRACK 0x80
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#define AUDIO_CONTROL_AUDIO_4P_TRACK 0x90
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#define AUDIO_STATUS_PAUSED 0x0001
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#pragma pack(1)
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struct playAudioRequest {
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char addressingMode;
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int startLocation;
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int sectors;
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};
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struct readRequest {
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char mediaDescriptor;
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short bufferOffset;
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short bufferSegment;
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short length;
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short startSector;
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int volumeID;
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};
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struct writeRequest {
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char mediaDescriptor;
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short bufferOffset;
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short bufferSegment;
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short length;
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short startSector;
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int volumeID;
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};
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struct cd_request {
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char headerLength;
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char unit;
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char command;
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short status;
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char reserved[8];
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union {
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struct playAudioRequest playAudio;
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struct readRequest read;
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struct writeRequest write;
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} x;
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};
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struct audioChannelInfo_s {
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char code;
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char channel0input;
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char channel0volume;
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char channel1input;
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char channel1volume;
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char channel2input;
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char channel2volume;
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char channel3input;
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char channel3volume;
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};
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struct deviceStatus_s {
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char code;
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int status;
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};
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struct mediaChange_s {
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char code;
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char status;
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};
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struct audioDiskInfo_s {
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char code;
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char lowTrack;
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char highTrack;
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int leadOutStart;
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};
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struct audioTrackInfo_s {
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char code;
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char track;
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int start;
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char control;
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};
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struct audioStatus_s {
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char code;
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short status;
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int PRstartLocation;
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int PRendLocation;
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};
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struct reset_s {
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char code;
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};
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union readInfo_u {
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struct audioChannelInfo_s audioChannelInfo;
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struct deviceStatus_s deviceStatus;
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struct mediaChange_s mediaChange;
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struct audioDiskInfo_s audioDiskInfo;
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struct audioTrackInfo_s audioTrackInfo;
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struct audioStatus_s audioStatus;
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struct reset_s reset;
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};
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#pragma pack()
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#define MAXIMUM_TRACKS 32
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typedef struct {
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int start;
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int length;
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qboolean isData;
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} track_info;
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typedef struct {
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qboolean valid;
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int leadOutAddress;
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track_info track[MAXIMUM_TRACKS];
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byte lowTrack;
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byte highTrack;
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} cd_info;
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static struct cd_request *cdRequest;
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static union readInfo_u *readInfo;
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static cd_info cd;
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static qboolean playing = false;
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static qboolean wasPlaying = false;
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static qboolean mediaCheck = false;
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static qboolean initialized = false;
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static qboolean enabled = true;
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static qboolean playLooping = false;
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static short cdRequestSegment;
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static short cdRequestOffset;
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static short readInfoSegment;
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static short readInfoOffset;
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static byte remap[256];
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static byte cdrom;
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static byte playTrack;
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static byte cdvolume;
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static int
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RedBookToSector (int rb)
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{
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byte minute;
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byte second;
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byte frame;
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minute = (rb >> 16) & 0xff;
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second = (rb >> 8) & 0xff;
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frame = rb & 0xff;
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return minute * 60 * 75 + second * 75 + frame;
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}
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static void
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CDAudio_Reset (void)
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{
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cdRequest->headerLength = 13;
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cdRequest->unit = 0;
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cdRequest->command = COMMAND_WRITE;
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cdRequest->status = 0;
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cdRequest->x.write.mediaDescriptor = 0;
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cdRequest->x.write.bufferOffset = readInfoOffset;
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cdRequest->x.write.bufferSegment = readInfoSegment;
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cdRequest->x.write.length = sizeof (struct reset_s);
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cdRequest->x.write.startSector = 0;
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cdRequest->x.write.volumeID = 0;
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readInfo->reset.code = WRITE_REQUEST_RESET;
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regs.x.ax = 0x1510;
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regs.x.cx = cdrom;
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regs.x.es = cdRequestSegment;
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regs.x.bx = cdRequestOffset;
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dos_int86 (0x2f);
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}
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static void
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CDAudio_Eject (void)
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{
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cdRequest->headerLength = 13;
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cdRequest->unit = 0;
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cdRequest->command = COMMAND_WRITE;
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cdRequest->status = 0;
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cdRequest->x.write.mediaDescriptor = 0;
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cdRequest->x.write.bufferOffset = readInfoOffset;
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cdRequest->x.write.bufferSegment = readInfoSegment;
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cdRequest->x.write.length = sizeof (struct reset_s);
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cdRequest->x.write.startSector = 0;
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cdRequest->x.write.volumeID = 0;
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readInfo->reset.code = WRITE_REQUEST_EJECT;
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regs.x.ax = 0x1510;
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regs.x.cx = cdrom;
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regs.x.es = cdRequestSegment;
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regs.x.bx = cdRequestOffset;
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dos_int86 (0x2f);
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}
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static int
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CDAudio_GetAudioTrackInfo (byte track, int *start)
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{
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byte control;
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cdRequest->headerLength = 13;
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cdRequest->unit = 0;
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cdRequest->command = COMMAND_READ;
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cdRequest->status = 0;
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cdRequest->x.read.mediaDescriptor = 0;
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cdRequest->x.read.bufferOffset = readInfoOffset;
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cdRequest->x.read.bufferSegment = readInfoSegment;
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cdRequest->x.read.length = sizeof (struct audioTrackInfo_s);
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cdRequest->x.read.startSector = 0;
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cdRequest->x.read.volumeID = 0;
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readInfo->audioTrackInfo.code = READ_REQUEST_AUDIO_TRACK_INFO;
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readInfo->audioTrackInfo.track = track;
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regs.x.ax = 0x1510;
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regs.x.cx = cdrom;
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regs.x.es = cdRequestSegment;
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regs.x.bx = cdRequestOffset;
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dos_int86 (0x2f);
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if (cdRequest->status & STATUS_ERROR_BIT) {
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Con_DPrintf ("CDAudio_GetAudioTrackInfo %04x\n",
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cdRequest->status & 0xffff);
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return -1;
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}
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*start = readInfo->audioTrackInfo.start;
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control = readInfo->audioTrackInfo.control & AUDIO_CONTROL_MASK;
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return (control & AUDIO_CONTROL_DATA_TRACK);
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}
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static int
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CDAudio_GetAudioDiskInfo (void)
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{
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int n;
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cdRequest->headerLength = 13;
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cdRequest->unit = 0;
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cdRequest->command = COMMAND_READ;
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cdRequest->status = 0;
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cdRequest->x.read.mediaDescriptor = 0;
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cdRequest->x.read.bufferOffset = readInfoOffset;
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cdRequest->x.read.bufferSegment = readInfoSegment;
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cdRequest->x.read.length = sizeof (struct audioDiskInfo_s);
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cdRequest->x.read.startSector = 0;
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cdRequest->x.read.volumeID = 0;
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readInfo->audioDiskInfo.code = READ_REQUEST_AUDIO_DISK_INFO;
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regs.x.ax = 0x1510;
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regs.x.cx = cdrom;
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regs.x.es = cdRequestSegment;
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regs.x.bx = cdRequestOffset;
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dos_int86 (0x2f);
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if (cdRequest->status & STATUS_ERROR_BIT) {
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Con_DPrintf ("CDAudio_GetAudioDiskInfo %04x\n",
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cdRequest->status & 0xffff);
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return -1;
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}
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cd.valid = true;
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cd.lowTrack = readInfo->audioDiskInfo.lowTrack;
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cd.highTrack = readInfo->audioDiskInfo.highTrack;
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cd.leadOutAddress = readInfo->audioDiskInfo.leadOutStart;
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for (n = cd.lowTrack; n <= cd.highTrack; n++) {
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cd.track[n].isData = CDAudio_GetAudioTrackInfo (n, &cd.track[n].start);
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if (n > cd.lowTrack) {
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cd.track[n - 1].length =
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RedBookToSector (cd.track[n].start) -
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RedBookToSector (cd.track[n - 1].start);
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if (n == cd.highTrack)
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cd.track[n].length =
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RedBookToSector (cd.leadOutAddress) -
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RedBookToSector (cd.track[n].start);
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}
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}
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return 0;
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}
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static int
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CDAudio_GetAudioStatus (void)
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{
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cdRequest->headerLength = 13;
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cdRequest->unit = 0;
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cdRequest->command = COMMAND_READ;
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cdRequest->status = 0;
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cdRequest->x.read.mediaDescriptor = 0;
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cdRequest->x.read.bufferOffset = readInfoOffset;
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cdRequest->x.read.bufferSegment = readInfoSegment;
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cdRequest->x.read.length = sizeof (struct audioStatus_s);
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cdRequest->x.read.startSector = 0;
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cdRequest->x.read.volumeID = 0;
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readInfo->audioDiskInfo.code = READ_REQUEST_AUDIO_STATUS;
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regs.x.ax = 0x1510;
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regs.x.cx = cdrom;
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regs.x.es = cdRequestSegment;
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regs.x.bx = cdRequestOffset;
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dos_int86 (0x2f);
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if (cdRequest->status & STATUS_ERROR_BIT)
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return -1;
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return 0;
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}
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static int
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CDAudio_MediaChange (void)
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{
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cdRequest->headerLength = 13;
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cdRequest->unit = 0;
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cdRequest->command = COMMAND_READ;
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cdRequest->status = 0;
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cdRequest->x.read.mediaDescriptor = 0;
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cdRequest->x.read.bufferOffset = readInfoOffset;
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cdRequest->x.read.bufferSegment = readInfoSegment;
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cdRequest->x.read.length = sizeof (struct mediaChange_s);
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cdRequest->x.read.startSector = 0;
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cdRequest->x.read.volumeID = 0;
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readInfo->mediaChange.code = READ_REQUEST_MEDIA_CHANGE;
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regs.x.ax = 0x1510;
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regs.x.cx = cdrom;
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regs.x.es = cdRequestSegment;
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regs.x.bx = cdRequestOffset;
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dos_int86 (0x2f);
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return readInfo->mediaChange.status;
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}
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byte
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CDAudio_GetVolume (void)
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{
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return cdvolume;
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}
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// we set the volume to 0 first and then to the desired volume
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// some cd-rom drivers seem to need it done this way
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void
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CDAudio_SetVolume (byte volume)
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{
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if (!initialized || !enabled)
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return;
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cdRequest->headerLength = 13;
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cdRequest->unit = 0;
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cdRequest->command = COMMAND_WRITE;
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cdRequest->status = 0;
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cdRequest->x.read.mediaDescriptor = 0;
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cdRequest->x.read.bufferOffset = readInfoOffset;
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cdRequest->x.read.bufferSegment = readInfoSegment;
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cdRequest->x.read.length = sizeof (struct audioChannelInfo_s);
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cdRequest->x.read.startSector = 0;
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cdRequest->x.read.volumeID = 0;
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readInfo->audioChannelInfo.code = WRITE_REQUEST_AUDIO_CHANNEL_INFO;
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readInfo->audioChannelInfo.channel0input = 0;
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readInfo->audioChannelInfo.channel0volume = 0;
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readInfo->audioChannelInfo.channel1input = 1;
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readInfo->audioChannelInfo.channel1volume = 0;
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readInfo->audioChannelInfo.channel2input = 2;
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readInfo->audioChannelInfo.channel2volume = 0;
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readInfo->audioChannelInfo.channel3input = 3;
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readInfo->audioChannelInfo.channel3volume = 0;
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regs.x.ax = 0x1510;
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regs.x.cx = cdrom;
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regs.x.es = cdRequestSegment;
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regs.x.bx = cdRequestOffset;
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dos_int86 (0x2f);
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readInfo->audioChannelInfo.channel0volume = volume;
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readInfo->audioChannelInfo.channel1volume = volume;
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regs.x.ax = 0x1510;
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regs.x.cx = cdrom;
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regs.x.es = cdRequestSegment;
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regs.x.bx = cdRequestOffset;
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dos_int86 (0x2f);
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cdvolume = volume;
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}
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void
|
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CDAudio_Play (byte track, qboolean looping)
|
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{
|
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if (!initialized || !enabled)
|
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return;
|
||||
|
||||
if (!cd.valid)
|
||||
return;
|
||||
|
||||
track = remap[track];
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||||
|
||||
if (playing) {
|
||||
if (playTrack == track)
|
||||
return;
|
||||
CDAudio_Stop ();
|
||||
}
|
||||
|
||||
playLooping = looping;
|
||||
|
||||
if (track < cd.lowTrack || track > cd.highTrack) {
|
||||
Con_DPrintf ("CDAudio_Play: Bad track number %u.\n", track);
|
||||
return;
|
||||
}
|
||||
|
||||
playTrack = track;
|
||||
|
||||
if (cd.track[track].isData) {
|
||||
Con_DPrintf ("CDAudio_Play: Can not play data.\n");
|
||||
return;
|
||||
}
|
||||
|
||||
cdRequest->headerLength = 13;
|
||||
cdRequest->unit = 0;
|
||||
cdRequest->command = COMMAND_PLAY_AUDIO;
|
||||
cdRequest->status = 0;
|
||||
|
||||
cdRequest->x.playAudio.addressingMode = ADDRESS_MODE_RED_BOOK;
|
||||
cdRequest->x.playAudio.startLocation = cd.track[track].start;
|
||||
cdRequest->x.playAudio.sectors = cd.track[track].length;
|
||||
|
||||
regs.x.ax = 0x1510;
|
||||
regs.x.cx = cdrom;
|
||||
regs.x.es = cdRequestSegment;
|
||||
regs.x.bx = cdRequestOffset;
|
||||
dos_int86 (0x2f);
|
||||
|
||||
if (cdRequest->status & STATUS_ERROR_BIT) {
|
||||
Con_DPrintf ("CDAudio_Play: track %u failed\n", track);
|
||||
cd.valid = false;
|
||||
playing = false;
|
||||
return;
|
||||
}
|
||||
|
||||
playing = true;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
CDAudio_Stop (void)
|
||||
{
|
||||
if (!initialized || !enabled)
|
||||
return;
|
||||
|
||||
cdRequest->headerLength = 13;
|
||||
cdRequest->unit = 0;
|
||||
cdRequest->command = COMMAND_STOP_AUDIO;
|
||||
cdRequest->status = 0;
|
||||
|
||||
regs.x.ax = 0x1510;
|
||||
regs.x.cx = cdrom;
|
||||
regs.x.es = cdRequestSegment;
|
||||
regs.x.bx = cdRequestOffset;
|
||||
dos_int86 (0x2f);
|
||||
|
||||
wasPlaying = playing;
|
||||
playing = false;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
CDAudio_Resume (void)
|
||||
{
|
||||
if (!initialized || !enabled)
|
||||
return;
|
||||
|
||||
if (!cd.valid)
|
||||
return;
|
||||
|
||||
if (!wasPlaying)
|
||||
return;
|
||||
|
||||
cdRequest->headerLength = 13;
|
||||
cdRequest->unit = 0;
|
||||
cdRequest->command = COMMAND_RESUME_AUDIO;
|
||||
cdRequest->status = 0;
|
||||
|
||||
regs.x.ax = 0x1510;
|
||||
regs.x.cx = cdrom;
|
||||
regs.x.es = cdRequestSegment;
|
||||
regs.x.bx = cdRequestOffset;
|
||||
dos_int86 (0x2f);
|
||||
|
||||
playing = true;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
CD_f (void)
|
||||
{
|
||||
char *command;
|
||||
int ret;
|
||||
int n;
|
||||
int startAddress;
|
||||
|
||||
if (Cmd_Argc () < 2)
|
||||
return;
|
||||
|
||||
command = Cmd_Argv (1);
|
||||
|
||||
if (Q_strcasecmp (command, "on") == 0) {
|
||||
enabled = true;
|
||||
return;
|
||||
}
|
||||
|
||||
if (Q_strcasecmp (command, "off") == 0) {
|
||||
if (playing)
|
||||
CDAudio_Stop ();
|
||||
enabled = false;
|
||||
return;
|
||||
}
|
||||
|
||||
if (Q_strcasecmp (command, "reset") == 0) {
|
||||
enabled = true;
|
||||
if (playing)
|
||||
CDAudio_Stop ();
|
||||
for (n = 0; n < 256; n++)
|
||||
remap[n] = n;
|
||||
CDAudio_Reset ();
|
||||
CDAudio_GetAudioDiskInfo ();
|
||||
return;
|
||||
}
|
||||
|
||||
if (Q_strcasecmp (command, "remap") == 0) {
|
||||
ret = Cmd_Argc () - 2;
|
||||
if (ret <= 0) {
|
||||
for (n = 1; n < 256; n++)
|
||||
if (remap[n] != n)
|
||||
Con_Printf (" %u -> %u\n", n, remap[n]);
|
||||
return;
|
||||
}
|
||||
for (n = 1; n <= ret; n++)
|
||||
remap[n] = Q_atoi (Cmd_Argv (n + 1));
|
||||
return;
|
||||
}
|
||||
|
||||
if (!cd.valid) {
|
||||
Con_Printf ("No CD in player.\n");
|
||||
return;
|
||||
}
|
||||
|
||||
if (Q_strcasecmp (command, "play") == 0) {
|
||||
CDAudio_Play (Q_atoi (Cmd_Argv (2)), false);
|
||||
return;
|
||||
}
|
||||
|
||||
if (Q_strcasecmp (command, "loop") == 0) {
|
||||
CDAudio_Play (Q_atoi (Cmd_Argv (2)), true);
|
||||
return;
|
||||
}
|
||||
|
||||
if (Q_strcasecmp (command, "stop") == 0) {
|
||||
CDAudio_Stop ();
|
||||
return;
|
||||
}
|
||||
|
||||
if (Q_strcasecmp (command, "resume") == 0) {
|
||||
CDAudio_Resume ();
|
||||
return;
|
||||
}
|
||||
|
||||
if (Q_strcasecmp (command, "eject") == 0) {
|
||||
if (playing)
|
||||
CDAudio_Stop ();
|
||||
CDAudio_Eject ();
|
||||
cd.valid = false;
|
||||
return;
|
||||
}
|
||||
|
||||
if (Q_strcasecmp (command, "info") == 0) {
|
||||
Con_Printf ("%u tracks\n", cd.highTrack - cd.lowTrack + 1);
|
||||
for (n = cd.lowTrack; n <= cd.highTrack; n++) {
|
||||
ret = CDAudio_GetAudioTrackInfo (n, &startAddress);
|
||||
Con_Printf ("Track %2u: %s at %2u:%02u\n", n,
|
||||
ret ? "data " : "music", (startAddress >> 16) & 0xff,
|
||||
(startAddress >> 8) & 0xff);
|
||||
}
|
||||
if (playing)
|
||||
Con_Printf ("Currently %s track %u\n",
|
||||
playLooping ? "looping" : "playing", playTrack);
|
||||
Con_Printf ("Volume is %u\n", cdvolume);
|
||||
CDAudio_MediaChange ();
|
||||
Con_Printf ("Status %04x\n", cdRequest->status & 0xffff);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
CDAudio_Update (void)
|
||||
{
|
||||
int ret;
|
||||
int newVolume;
|
||||
static double lastUpdate;
|
||||
|
||||
if (!initialized || !enabled)
|
||||
return;
|
||||
|
||||
if ((realtime - lastUpdate) < 0.25)
|
||||
return;
|
||||
lastUpdate = realtime;
|
||||
|
||||
if (mediaCheck) {
|
||||
static double lastCheck;
|
||||
|
||||
if ((realtime - lastCheck) < 5.0)
|
||||
return;
|
||||
lastCheck = realtime;
|
||||
|
||||
ret = CDAudio_MediaChange ();
|
||||
if (ret == MEDIA_CHANGED) {
|
||||
Con_DPrintf ("CDAudio: media changed\n");
|
||||
playing = false;
|
||||
wasPlaying = false;
|
||||
cd.valid = false;
|
||||
CDAudio_GetAudioDiskInfo ();
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
newVolume = (int) (bgmvolume->value * 255.0);
|
||||
if (newVolume < 0) {
|
||||
Cvar_SetValue (bgmvolume, 0.0);
|
||||
newVolume = 0;
|
||||
} else if (newVolume > 255) {
|
||||
Cvar_SetValue (bgmvolume, 1.0);
|
||||
newVolume = 255;
|
||||
}
|
||||
if (cdvolume != newVolume)
|
||||
CDAudio_SetVolume (newVolume);
|
||||
|
||||
if (playing) {
|
||||
CDAudio_GetAudioStatus ();
|
||||
if ((cdRequest->status & STATUS_BUSY_BIT) == 0) {
|
||||
playing = false;
|
||||
if (playLooping)
|
||||
CDAudio_Play (playTrack, true);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
qboolean
|
||||
CDAudio_Playing (void)
|
||||
{
|
||||
return playing;
|
||||
}
|
||||
|
||||
|
||||
int
|
||||
CDAudio_Init (void)
|
||||
{
|
||||
char *memory;
|
||||
int n;
|
||||
|
||||
if (cls.state == ca_dedicated)
|
||||
return -1;
|
||||
|
||||
if (COM_CheckParm ("-nocdaudio"))
|
||||
return -1;
|
||||
|
||||
if (COM_CheckParm ("-cdmediacheck"))
|
||||
mediaCheck = true;
|
||||
|
||||
regs.x.ax = 0x1500;
|
||||
regs.x.bx = 0;
|
||||
dos_int86 (0x2f);
|
||||
if (regs.x.bx == 0) {
|
||||
Con_Printf
|
||||
("MSCDEX not loaded, music is disabled. Use \"-nocdaudio\" if you wish to avoid this message in the future. See README.TXT for help.\n");
|
||||
return -1;
|
||||
}
|
||||
if (regs.x.bx > 1)
|
||||
Con_DPrintf ("CDAudio_Init: First CD-ROM drive will be used\n");
|
||||
cdrom = regs.x.cx;
|
||||
|
||||
regs.x.ax = 0x150c;
|
||||
regs.x.bx = 0;
|
||||
dos_int86 (0x2f);
|
||||
if (regs.x.bx == 0) {
|
||||
Con_Printf
|
||||
("MSCDEX version 2.00 or later required for music. See README.TXT for help.\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
memory =
|
||||
|
||||
dos_getmemory (sizeof (struct cd_request) + sizeof (union readInfo_u));
|
||||
if (memory == NULL) {
|
||||
Con_DPrintf ("CDAudio_Init: Unable to allocate low memory.\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
cdRequest = (struct cd_request *) memory;
|
||||
cdRequestSegment = ptr2real (cdRequest) >> 4;
|
||||
cdRequestOffset = ptr2real (cdRequest) & 0xf;
|
||||
|
||||
readInfo = (union readInfo_u *) (memory + sizeof (struct cd_request));
|
||||
|
||||
readInfoSegment = ptr2real (readInfo) >> 4;
|
||||
readInfoOffset = ptr2real (readInfo) & 0xf;
|
||||
|
||||
for (n = 0; n < 256; n++)
|
||||
remap[n] = n;
|
||||
initialized = true;
|
||||
|
||||
CDAudio_SetVolume (255);
|
||||
if (CDAudio_GetAudioDiskInfo ()) {
|
||||
Con_Printf ("CDAudio_Init: No CD in player.\n");
|
||||
enabled = false;
|
||||
}
|
||||
|
||||
Cmd_AddCommand ("cd", CD_f);
|
||||
|
||||
Con_Printf ("CD Audio Initialized\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
CDAudio_Shutdown (void)
|
||||
{
|
||||
if (!initialized)
|
||||
return;
|
||||
CDAudio_Stop ();
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue