Quake!

This ports id Software's Quake to run on the SDL plugin runtime. The
source code originated from id under the GPLv2 license. I used
https://github.com/ahefner/sdlquake as the base of my port.

Performance is, unsurprisingly, not on par with what you're probably
used to on PC. I average about 10FPS on ipod6g, but it's still
playable.

Sound works well enough, but in-game music is not supported. I've
written ARM assembly routines for the inner sound loop. Make sure you
turn the "brightness" all the way down, or colors will look funky.

To run, extract Quake's data files to /.rockbox/quake. Have fun!

Change-Id: I4285036e967d7f0722802d43cf2096c808ca5799

1 files changed, 416 insertions, 0 deletions

diff --git a/apps/plugins/sdl/progs/quake/cd_linux.c b/apps/plugins/sdl/progs/quake/cd_linux.c
new file mode 100644
index 0000000000..0e23d96035
--- /dev/null
+++ b/apps/plugins/sdl/progs/quake/cd_linux.c
@@ -0,0 +1,416 @@
+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+
+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.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+// 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 "quakedef.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";
+
+static void CDAudio_Eject(void)
+{
+        if (cdfile == -1 || !enabled)
+                return; // no cd init'd
+
+        if ( ioctl(cdfile, CDROMEJECT) == -1 ) 
+                Con_DPrintf("ioctl cdromeject failed\n");
+}
+
+
+static void CDAudio_CloseDoor(void)
+{
+        if (cdfile == -1 || !enabled)
+                return; // no cd init'd
+
+        if ( ioctl(cdfile, CDROMCLOSETRAY) == -1 ) 
+                Con_DPrintf("ioctl cdromclosetray failed\n");
+}
+
+static int CDAudio_GetAudioDiskInfo(void)
+{
+        struct cdrom_tochdr tochdr;
+
+        cdValid = false;
+
+        if ( ioctl(cdfile, CDROMREADTOCHDR, &tochdr) == -1 ) 
+    {
+      Con_DPrintf("ioctl cdromreadtochdr failed\n");
+          return -1;
+    }
+
+        if (tochdr.cdth_trk0 < 1)
+        {
+                Con_DPrintf("CDAudio: no music tracks\n");
+                return -1;
+        }
+
+        cdValid = true;
+        maxTrack = tochdr.cdth_trk1;
+
+        return 0;
+}
+
+
+void CDAudio_Play(byte 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)
+        {
+                Con_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 )
+        {
+                Con_DPrintf("ioctl cdromreadtocentry failed\n");
+                return;
+        }
+        if (entry.cdte_ctrl == CDROM_DATA_TRACK)
+        {
+                Con_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 ) 
+    {
+                Con_DPrintf("ioctl cdromplaytrkind failed\n");
+                return;
+    }
+
+        if ( ioctl(cdfile, CDROMRESUME) == -1 ) 
+                Con_DPrintf("ioctl cdromresume failed\n");
+
+        playLooping = looping;
+        playTrack = track;
+        playing = true;
+
+        if (cdvolume == 0.0)
+                CDAudio_Pause ();
+}
+
+
+void CDAudio_Stop(void)
+{
+        if (cdfile == -1 || !enabled)
+                return;
+        
+        if (!playing)
+                return;
+
+        if ( ioctl(cdfile, CDROMSTOP) == -1 )
+                Con_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 ) 
+                Con_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 ) 
+                Con_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)
+                                        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 (Q_strcasecmp(command, "close") == 0)
+        {
+                CDAudio_CloseDoor();
+                return;
+        }
+
+        if (!cdValid)
+        {
+                CDAudio_GetAudioDiskInfo();
+                if (!cdValid)
+                {
+                        Con_Printf("No CD in player.\n");
+                        return;
+                }
+        }
+
+        if (Q_strcasecmp(command, "play") == 0)
+        {
+                CDAudio_Play((byte)Q_atoi(Cmd_Argv (2)), false);
+                return;
+        }
+
+        if (Q_strcasecmp(command, "loop") == 0)
+        {
+                CDAudio_Play((byte)Q_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)
+        {
+                Con_Printf("%u tracks\n", maxTrack);
+                if (playing)
+                        Con_Printf("Currently %s track %u\n", playLooping ? "looping" : "playing", playTrack);
+                else if (wasPlaying)
+                        Con_Printf("Paused %s track %u\n", playLooping ? "looping" : "playing", playTrack);
+                Con_Printf("Volume is %f\n", cdvolume);
+                return;
+        }
+}
+
+void CDAudio_Update(void)
+{
+        struct cdrom_subchnl subchnl;
+        static time_t lastchk;
+
+        if (!enabled)
+                return;
+
+        if (bgmvolume.value != cdvolume)
+        {
+                if (cdvolume)
+                {
+                        Cvar_SetValue ("bgmvolume", 0.0);
+                        cdvolume = bgmvolume.value;
+                        CDAudio_Pause ();
+                }
+                else
+                {
+                        Cvar_SetValue ("bgmvolume", 1.0);
+                        cdvolume = bgmvolume.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 ) {
+                        Con_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;
+
+        if (cls.state == ca_dedicated)
+                return -1;
+
+        if (COM_CheckParm("-nocdaudio"))
+                return -1;
+
+        if ((i = COM_CheckParm("-cddev")) != 0 && i < com_argc - 1) {
+                strncpy(cd_dev, com_argv[i + 1], sizeof(cd_dev));
+                cd_dev[sizeof(cd_dev) - 1] = 0;
+        }
+
+        if ((cdfile = open(cd_dev, O_RDONLY)) == -1) {
+                Con_Printf("CDAudio_Init: open of \"%s\" failed (%i)\n", cd_dev, errno);
+                cdfile = -1;
+                return -1;
+        }
+
+        for (i = 0; i < 100; i++)
+                remap[i] = i;
+        initialized = true;
+        enabled = true;
+
+        if (CDAudio_GetAudioDiskInfo())
+        {
+                Con_Printf("CDAudio_Init: No CD in player.\n");
+                cdValid = false;
+        }
+
+        Cmd_AddCommand ("cd", CD_f);
+
+        Con_Printf("CD Audio Initialized\n");
+
+        return 0;
+}
+
+
+void CDAudio_Shutdown(void)
+{
+        if (!initialized)
+                return;
+        CDAudio_Stop();
+        close(cdfile);
+        cdfile = -1;
+}