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//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 1993-2008 Raven Software
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// This program 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 General Public License for more details.
//
//
// SDL implementation of the Hexen CD interface.
//
#include <stdio.h>
#include "SDL.h"
#include "SDL_cdrom.h"
#include "doomtype.h"
#include "i_cdmus.h"
static SDL_CD *cd_handle = NULL;
static char *startup_error = NULL;
static const char *cd_name = NULL;
int cd_Error;
int I_CDMusInit(void)
{
int drive_num = 0;
// The initialize function is re-invoked when the CD track play cheat
// is used, so use the opportunity to call SDL_CDStatus() to update
// the status of the drive.
if (cd_handle == NULL)
{
if (SDL_Init(SDL_INIT_CDROM) < 0)
{
startup_error = "Failed to init CD subsystem.";
cd_Error = 1;
return -1;
}
// TODO: config variable to control CDROM to use.
cd_handle = SDL_CDOpen(drive_num);
if (cd_handle == NULL)
{
startup_error = "Failed to open CD-ROM drive.";
cd_Error = 1;
return -1;
}
cd_name = SDL_CDName(drive_num);
}
if (SDL_CDStatus(cd_handle) == CD_ERROR)
{
startup_error = "Failed to read CD status.";
cd_Error = 1;
return -1;
}
if (!CD_INDRIVE(cd_handle->status))
{
startup_error = "No CD in drive.";
cd_Error = 1;
return -1;
}
cd_Error = 0;
return 0;
}
// We cannot print status messages inline during startup, they must
// be deferred until after I_CDMusInit has returned.
void I_CDMusPrintStartup(void)
{
if (cd_name != NULL)
{
printf("I_CDMusInit: Using CD-ROM drive: %s\n", cd_name);
}
if (startup_error != NULL)
{
fprintf(stderr, "I_CDMusInit: %s\n", startup_error);
}
}
int I_CDMusPlay(int track)
{
int result;
if (cd_handle == NULL)
{
cd_Error = 1;
return -1;
}
// Play one track
// Track is indexed from 1.
result = SDL_CDPlayTracks(cd_handle, track - 1, 0, 1, 0);
cd_Error = 0;
return result;
}
int I_CDMusStop(void)
{
int result;
result = SDL_CDStop(cd_handle);
cd_Error = 0;
return result;
}
int I_CDMusResume(void)
{
int result;
result = SDL_CDResume(cd_handle);
cd_Error = 0;
return result;
}
int I_CDMusSetVolume(int volume)
{
/* Not supported yet */
cd_Error = 0;
return 0;
}
int I_CDMusFirstTrack(void)
{
int i;
if (cd_handle == NULL)
{
cd_Error = 1;
return -1;
}
// Find the first audio track.
for (i=0; i<cd_handle->numtracks; ++i)
{
if (cd_handle->track[i].type == SDL_AUDIO_TRACK)
{
cd_Error = 0;
// Tracks are indexed from 1.
return i + 1;
}
}
// Don't know?
cd_Error = 1;
return -1;
}
int I_CDMusLastTrack(void)
{
if (cd_handle == NULL)
{
cd_Error = 1;
return -1;
}
cd_Error = 0;
return cd_handle->numtracks;
}
int I_CDMusTrackLength(int track_num)
{
SDL_CDtrack *track;
if (cd_handle == NULL || track_num < 1 || track_num > cd_handle->numtracks)
{
cd_Error = 1;
return -1;
}
// Track number is indexed from 1.
track = &cd_handle->track[track_num - 1];
// Round up to the next second
cd_Error = 0;
return (track->length + CD_FPS - 1) / CD_FPS;
}
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