1 files changed, 182 insertions, 0 deletions
diff --git a/src/i_cdmus.c b/src/i_cdmus.c
new file mode 100644
index 00000000..94ac47c6
--- /dev/null
+++ b/src/i_cdmus.c
@@ -0,0 +1,182 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// 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.
+//
+// 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.
+//
+//-----------------------------------------------------------------------------
+//
+// 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;
+
+int cd_Error;
+
+int I_CDMusInit(void)
+{
+    int drive_num = 0;
+
+    // TODO: config variable to control CDROM to use.
+   
+    cd_handle = SDL_CDOpen(drive_num);
+
+    if (cd_handle == NULL)
+    {
+        fprintf(stderr, "I_CDMusInit: Failed to open CD-ROM drive.\n");
+        cd_Error = 1;
+        return -1;
+    }
+
+    if (!CD_INDRIVE(cd_handle->status))
+    {
+        fprintf(stderr, "I_CDMusInit: '%s': no CD in drive.\n",
+                        SDL_CDName(drive_num));
+        cd_Error = 1;
+        return -1;
+    }
+
+    cd_Error = 0;
+
+    return 0;
+}
+
+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;
+}
+