Quake-2

cd_linux.c (7284B)

---

 // Quake is a trademark of Id Software, Inc., (c) 1996 Id Software, Inc. All
 // rights reserved.
 
 #include <stdio.h>
 #include <unistd.h>
 #include <stdlib.h>
 #include <sys/ioctl.h>
 #include <sys/file.h>
 #include <sys/types.h>
 #include <fcntl.h>
 #include <string.h>
 #include <time.h>
 #include <errno.h>
 
 #include <linux/cdrom.h>
 
 #include "../client/client.h"
 
 static qboolean cdValid = false;
 static qboolean	playing = false;
 static qboolean	wasPlaying = false;
 static qboolean	initialized = false;
 static qboolean	enabled = true;
 static qboolean playLooping = false;
 static float	cdvolume;
 static byte 	remap[100];
 static byte		playTrack;
 static byte		maxTrack;
 
 static int cdfile = -1;
 
 //static char cd_dev[64] = "/dev/cdrom";
 
 cvar_t	*cd_volume;
 cvar_t *cd_nocd;
 cvar_t *cd_dev;
 
 void CDAudio_Pause(void);
 
 static void CDAudio_Eject(void)
 {
 	if (cdfile == -1 || !enabled)
 		return; // no cd init'd
 
 	if ( ioctl(cdfile, CDROMEJECT) == -1 ) 
 		Com_DPrintf("ioctl cdromeject failed\n");
 }
 
 
 static void CDAudio_CloseDoor(void)
 {
 	if (cdfile == -1 || !enabled)
 		return; // no cd init'd
 
 	if ( ioctl(cdfile, CDROMCLOSETRAY) == -1 ) 
 		Com_DPrintf("ioctl cdromclosetray failed\n");
 }
 
 static int CDAudio_GetAudioDiskInfo(void)
 {
 	struct cdrom_tochdr tochdr;
 
 	cdValid = false;
 
 	if ( ioctl(cdfile, CDROMREADTOCHDR, &tochdr) == -1 ) 
     {
       Com_DPrintf("ioctl cdromreadtochdr failed\n");
 	  return -1;
     }
 
 	if (tochdr.cdth_trk0 < 1)
 	{
 		Com_DPrintf("CDAudio: no music tracks\n");
 		return -1;
 	}
 
 	cdValid = true;
 	maxTrack = tochdr.cdth_trk1;
 
 	return 0;
 }
 
 
 void CDAudio_Play(int track, qboolean looping)
 {
 	struct cdrom_tocentry entry;
 	struct cdrom_ti ti;
 
 	if (cdfile == -1 || !enabled)
 		return;
 	
 	if (!cdValid)
 	{
 		CDAudio_GetAudioDiskInfo();
 		if (!cdValid)
 			return;
 	}
 
 	track = remap[track];
 
 	if (track < 1 || track > maxTrack)
 	{
 		Com_DPrintf("CDAudio: Bad track number %u.\n", track);
 		return;
 	}
 
 	// don't try to play a non-audio track
 	entry.cdte_track = track;
 	entry.cdte_format = CDROM_MSF;
     if ( ioctl(cdfile, CDROMREADTOCENTRY, &entry) == -1 )
 	{
 		Com_DPrintf("ioctl cdromreadtocentry failed\n");
 		return;
 	}
 	if (entry.cdte_ctrl == CDROM_DATA_TRACK)
 	{
 		Com_Printf("CDAudio: track %i is not audio\n", track);
 		return;
 	}
 
 	if (playing)
 	{
 		if (playTrack == track)
 			return;
 		CDAudio_Stop();
 	}
 
 	ti.cdti_trk0 = track;
 	ti.cdti_trk1 = track;
 	ti.cdti_ind0 = 1;
 	ti.cdti_ind1 = 99;
 
 	if ( ioctl(cdfile, CDROMPLAYTRKIND, &ti) == -1 ) 
     {
 		Com_DPrintf("ioctl cdromplaytrkind failed\n");
 		return;
     }
 
 	if ( ioctl(cdfile, CDROMRESUME) == -1 ) 
 		Com_DPrintf("ioctl cdromresume failed\n");
 
 	playLooping = looping;
 	playTrack = track;
 	playing = true;
 
 	if (cd_volume->value == 0.0)
 		CDAudio_Pause ();
 }
 
 
 void CDAudio_Stop(void)
 {
 	if (cdfile == -1 || !enabled)
 		return;
 	
 	if (!playing)
 		return;
 
 	if ( ioctl(cdfile, CDROMSTOP) == -1 )
 		Com_DPrintf("ioctl cdromstop failed (%d)\n", errno);
 
 	wasPlaying = false;
 	playing = false;
 }
 
 void CDAudio_Pause(void)
 {
 	if (cdfile == -1 || !enabled)
 		return;
 
 	if (!playing)
 		return;
 
 	if ( ioctl(cdfile, CDROMPAUSE) == -1 ) 
 		Com_DPrintf("ioctl cdrompause failed\n");
 
 	wasPlaying = playing;
 	playing = false;
 }
 
 
 void CDAudio_Resume(void)
 {
 	if (cdfile == -1 || !enabled)
 		return;
 	
 	if (!cdValid)
 		return;
 
 	if (!wasPlaying)
 		return;
 	
 	if ( ioctl(cdfile, CDROMRESUME) == -1 ) 
 		Com_DPrintf("ioctl cdromresume failed\n");
 	playing = true;
 }
 
 static void CD_f (void)
 {
 	char	*command;
 	int		ret;
 	int		n;
 
 	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 < 100; n++)
 			remap[n] = n;
 		CDAudio_GetAudioDiskInfo();
 		return;
 	}
 
 	if (Q_strcasecmp(command, "remap") == 0)
 	{
 		ret = Cmd_Argc() - 2;
 		if (ret <= 0)
 		{
 			for (n = 1; n < 100; n++)
 				if (remap[n] != n)
 					Com_Printf("  %u -> %u\n", n, remap[n]);
 			return;
 		}
 		for (n = 1; n <= ret; n++)
 			remap[n] = atoi(Cmd_Argv (n+1));
 		return;
 	}
 
 	if (Q_strcasecmp(command, "close") == 0)
 	{
 		CDAudio_CloseDoor();
 		return;
 	}
 
 	if (!cdValid)
 	{
 		CDAudio_GetAudioDiskInfo();
 		if (!cdValid)
 		{
 			Com_Printf("No CD in player.\n");
 			return;
 		}
 	}
 
 	if (Q_strcasecmp(command, "play") == 0)
 	{
 		CDAudio_Play((byte)atoi(Cmd_Argv (2)), false);
 		return;
 	}
 
 	if (Q_strcasecmp(command, "loop") == 0)
 	{
 		CDAudio_Play((byte)atoi(Cmd_Argv (2)), true);
 		return;
 	}
 
 	if (Q_strcasecmp(command, "stop") == 0)
 	{
 		CDAudio_Stop();
 		return;
 	}
 
 	if (Q_strcasecmp(command, "pause") == 0)
 	{
 		CDAudio_Pause();
 		return;
 	}
 
 	if (Q_strcasecmp(command, "resume") == 0)
 	{
 		CDAudio_Resume();
 		return;
 	}
 
 	if (Q_strcasecmp(command, "eject") == 0)
 	{
 		if (playing)
 			CDAudio_Stop();
 		CDAudio_Eject();
 		cdValid = false;
 		return;
 	}
 
 	if (Q_strcasecmp(command, "info") == 0)
 	{
 		Com_Printf("%u tracks\n", maxTrack);
 		if (playing)
 			Com_Printf("Currently %s track %u\n", playLooping ? "looping" : "playing", playTrack);
 		else if (wasPlaying)
 			Com_Printf("Paused %s track %u\n", playLooping ? "looping" : "playing", playTrack);
 		Com_Printf("Volume is %f\n", cdvolume);
 		return;
 	}
 }
 
 void CDAudio_Update(void)
 {
 	struct cdrom_subchnl subchnl;
 	static time_t lastchk;
 
 	if (cdfile == -1 || !enabled)
 		return;
 
 	if (cd_volume && cd_volume->value != cdvolume)
 	{
 		if (cdvolume)
 		{
 			Cvar_SetValue ("cd_volume", 0.0);
 			cdvolume = cd_volume->value;
 			CDAudio_Pause ();
 		}
 		else
 		{
 			Cvar_SetValue ("cd_volume", 1.0);
 			cdvolume = cd_volume->value;
 			CDAudio_Resume ();
 		}
 	}
 
 	if (playing && lastchk < time(NULL)) {
 		lastchk = time(NULL) + 2; //two seconds between chks
 		subchnl.cdsc_format = CDROM_MSF;
 		if (ioctl(cdfile, CDROMSUBCHNL, &subchnl) == -1 ) {
 			Com_DPrintf("ioctl cdromsubchnl failed\n");
 			playing = false;
 			return;
 		}
 		if (subchnl.cdsc_audiostatus != CDROM_AUDIO_PLAY &&
 			subchnl.cdsc_audiostatus != CDROM_AUDIO_PAUSED) {
 			playing = false;
 			if (playLooping)
 				CDAudio_Play(playTrack, true);
 		}
 	}
 }
 
 int CDAudio_Init(void)
 {
 	int i;
 	cvar_t			*cv;
 	extern uid_t saved_euid;
 
 	cv = Cvar_Get ("nocdaudio", "0", CVAR_NOSET);
 	if (cv->value)
 		return -1;
 
 	cd_nocd = Cvar_Get ("cd_nocd", "0", CVAR_ARCHIVE );
 	if ( cd_nocd->value)
 		return -1;
 
 	cd_volume = Cvar_Get ("cd_volume", "1", CVAR_ARCHIVE);
 
 	cd_dev = Cvar_Get("cd_dev", "/dev/cdrom", CVAR_ARCHIVE);
 
 	seteuid(saved_euid);
 
 	cdfile = open(cd_dev->string, O_RDONLY);
 
 	seteuid(getuid());
 
 	if (cdfile == -1) {
 		Com_Printf("CDAudio_Init: open of \"%s\" failed (%i)\n", cd_dev->string, errno);
 		cdfile = -1;
 		return -1;
 	}
 
 	for (i = 0; i < 100; i++)
 		remap[i] = i;
 	initialized = true;
 	enabled = true;
 
 	if (CDAudio_GetAudioDiskInfo())
 	{
 		Com_Printf("CDAudio_Init: No CD in player.\n");
 		cdValid = false;
 	}
 
 	Cmd_AddCommand ("cd", CD_f);
 
 	Com_Printf("CD Audio Initialized\n");
 
 	return 0;
 }
 
 void CDAudio_Activate (qboolean active)
 {
 	if (active)
 		CDAudio_Resume ();
 	else
 		CDAudio_Pause ();
 }
 
 void CDAudio_Shutdown(void)
 {
 	if (!initialized)
 		return;
 	CDAudio_Stop();
 	close(cdfile);
 	cdfile = -1;
 }