}
+float CDAudio_SysGetVolume (void)
+{
+ struct cdrom_volctrl vol;
+
+ if (cdfile == -1)
+ return -1.0f;
+
+ if (ioctl (cdfile, CDROMVOLREAD, &vol) == -1)
+ {
+ Con_DPrint("ioctl CDROMVOLREAD failed\n");
+ return -1.0f;
+ }
+
+ return (vol.channel0 + vol.channel1) / 2.0f / 255.0f;
+}
+
+
+void CDAudio_SysSetVolume (float volume)
+{
+ struct cdrom_volctrl vol;
+
+ if (cdfile == -1)
+ return;
+
+ vol.channel0 = vol.channel1 = volume * 255;
+ vol.channel2 = vol.channel3 = 0;
+
+ if (ioctl (cdfile, CDROMVOLCTRL, &vol) == -1)
+ Con_DPrint("ioctl CDROMVOLCTRL failed\n");
+}
+
+
int CDAudio_SysPlay (qbyte track)
{
struct cdrom_tocentry entry;
int CDAudio_SysStartup (void)
{
- if ((cdfile = open(cd_dev, O_RDONLY)) == -1)
+ if ((cdfile = open(cd_dev, O_RDONLY | O_NONBLOCK)) == -1)
{
Con_DPrintf("CDAudio_SysStartup: open of \"%s\" failed (%i)\n",
cd_dev, errno);