tge/engine/platformX86UNIX/x86UNIXRedbook.cc
2017-04-17 06:17:10 -06:00

440 lines
10 KiB
C++
Executable File

//-----------------------------------------------------------------------------
// Torque Game Engine
// Copyright (C) GarageGames.com, Inc.
//-----------------------------------------------------------------------------
#include "console/console.h"
#include "platformX86UNIX/platformX86UNIX.h"
#include "platform/platformRedBook.h"
#if defined(__linux__)
#include <linux/cdrom.h>
#include <sys/ioctl.h>
#include <errno.h>
#include <string.h>
#endif
#include <SDL/SDL.h>
class UnixRedBookDevice : public RedBookDevice
{
#if !defined(__FreeBSD__)
private:
S32 mDeviceId;
SDL_CD *mCD;
cdrom_volctrl mOriginalVolume;
bool mVolumeInitialized;
#endif
bool mPlaying;
void openVolume();
void closeVolume();
void setLastError(const char *);
public:
UnixRedBookDevice();
~UnixRedBookDevice();
bool open();
bool close();
bool play(U32);
bool stop();
bool getTrackCount(U32 *);
bool getVolume(F32 *);
bool setVolume(F32);
bool isPlaying() { return mPlaying; }
bool updateStatus();
void setDeviceInfo(S32 deviceId, const char *deviceName);
};
//-------------------------------------------------------------------------------
// Class: UnixRedBookDevice
//-------------------------------------------------------------------------------
UnixRedBookDevice::UnixRedBookDevice()
{
#if !defined(__FreeBSD__)
mVolumeInitialized = false;
mDeviceId = -1;
mDeviceName = NULL;
mCD = NULL;
mPlaying = false;
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
UnixRedBookDevice::~UnixRedBookDevice()
{
#if !defined(__FreeBSD__)
close();
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
bool UnixRedBookDevice::updateStatus()
{
#if !defined(__FreeBSD__)
AssertFatal(mCD, "mCD is NULL");
CDstatus status = SDL_CDStatus(mCD);
if (status == CD_ERROR)
{
setLastError("Error accessing device");
return(false);
}
else if (status == CD_TRAYEMPTY)
{
setLastError("CD tray empty");
return false;
}
mPlaying = (status == CD_PLAYING);
return true;
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
void UnixRedBookDevice::setDeviceInfo(S32 deviceId, const char *deviceName)
{
#if !defined(__FreeBSD__)
mDeviceId = deviceId;
mDeviceName = new char[dStrlen(deviceName) + 1];
dStrcpy(mDeviceName, deviceName);
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
bool UnixRedBookDevice::open()
{
#if !defined(__FreeBSD__)
if(mAcquired)
{
setLastError("Device is already open.");
return(false);
}
// open the device
mCD = SDL_CDOpen(mDeviceId);
if (mCD == NULL)
{
setLastError(SDL_GetError());
return false;
}
mAcquired = true;
openVolume();
setLastError("");
return(true);
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
bool UnixRedBookDevice::close()
{
#if !defined(__FreeBSD__)
if(!mAcquired)
{
setLastError("Device has not been acquired");
return(false);
}
stop();
closeVolume();
if (mCD != NULL)
{
SDL_CDClose(mCD);
mCD = NULL;
}
mAcquired = false;
setLastError("");
return(true);
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
bool UnixRedBookDevice::play(U32 track)
{
#if !defined(__FreeBSD__)
if(!mAcquired)
{
setLastError("Device has not been acquired");
return(false);
}
U32 numTracks;
if(!getTrackCount(&numTracks))
return(false);
if(track >= numTracks)
{
setLastError("Track index is out of range");
return(false);
}
if (!updateStatus())
return false;
AssertFatal(mCD, "mCD is NULL");
if (SDL_CDPlayTracks(mCD, track, 0, 1, 0) == -1)
{
setLastError(SDL_GetError());
return false;
}
mPlaying = true;
setLastError("");
return(true);
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
bool UnixRedBookDevice::stop()
{
#if !defined(__FreeBSD__)
if(!mAcquired)
{
setLastError("Device has not been acquired");
return(false);
}
AssertFatal(mCD, "mCD is NULL");
if (SDL_CDStop(mCD) == -1)
{
setLastError(SDL_GetError());
return(false);
}
mPlaying = false;
setLastError("");
return(true);
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
bool UnixRedBookDevice::getTrackCount(U32 * numTracks)
{
#if !defined(__FreeBSD__)
if(!mAcquired)
{
setLastError("Device has not been acquired");
return(false);
}
if (!updateStatus())
return false;
AssertFatal(mCD, "mCD is NULL");
*numTracks = mCD->numtracks;
return(true);
#endif // !defined(__FreeBSD__)
}
template <class Type>
static inline Type max(Type v1, Type v2)
{
#if !defined(__FreeBSD__)
if (v1 <= v2)
return v2;
else
return v1;
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
bool UnixRedBookDevice::getVolume(F32 * volume)
{
#if !defined(__FreeBSD__)
if(!mAcquired)
{
setLastError("Device has not been acquired");
return(false);
}
if(!mVolumeInitialized)
{
setLastError("Volume failed to initialize");
return(false);
}
#if defined(__linux__)
AssertFatal(mCD, "mCD is NULL");
setLastError("");
cdrom_volctrl sysvol;
if (ioctl(mCD->id, CDROMVOLREAD, &sysvol) == -1)
{
setLastError(strerror(errno));
return(false);
}
U8 maxVol = max(sysvol.channel0, sysvol.channel1);
// JMQTODO: support different left/right channel volumes?
*volume = static_cast<F32>(maxVol) / 255.f;
return true;
#else
return(false);
#endif
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
bool UnixRedBookDevice::setVolume(F32 volume)
{
#if !defined(__FreeBSD__)
if(!mAcquired)
{
setLastError("Device has not been acquired");
return(false);
}
if(!mVolumeInitialized)
{
setLastError("Volume failed to initialize");
return(false);
}
#if defined(__linux__)
AssertFatal(mCD, "mCD is NULL");
setLastError("");
cdrom_volctrl sysvol;
volume = volume * 255.f;
if (volume > 255)
volume = 255;
if (volume < 0)
volume = 0;
sysvol.channel0 = sysvol.channel1 = static_cast<__u8>(volume);
if (ioctl(mCD->id, CDROMVOLCTRL, &sysvol) == -1)
{
setLastError(strerror(errno));
return(false);
}
return true;
#else
return(false);
#endif
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
void UnixRedBookDevice::openVolume()
{
#if !defined(__FreeBSD__)
// Its unforunate that we have to do it this way, but SDL does not currently
// support setting CD audio volume
#if defined(__linux__)
AssertFatal(mCD, "mCD is NULL");
setLastError("");
if (ioctl(mCD->id, CDROMVOLREAD, &mOriginalVolume) == -1)
{
setLastError(strerror(errno));
return;
}
mVolumeInitialized = true;
#else
setLastError("Volume failed to initialize");
#endif
#endif // !defined(__FreeBSD__)
}
void UnixRedBookDevice::closeVolume()
{
#if !defined(__FreeBSD__)
if(!mVolumeInitialized)
return;
#if defined(__linux__)
AssertFatal(mCD, "mCD is NULL");
setLastError("");
if (ioctl(mCD->id, CDROMVOLCTRL, &mOriginalVolume) == -1)
{
setLastError(strerror(errno));
return;
}
#endif
mVolumeInitialized = false;
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
void UnixRedBookDevice::setLastError(const char * error)
{
#if !defined(__FreeBSD__)
RedBook::setLastError(error);
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
void InstallRedBookDevices()
{
#if !defined(__FreeBSD__)
Con::printf("CD Audio Init:");
if (SDL_InitSubSystem(SDL_INIT_CDROM) == -1)
{
Con::printf(" Unable to initialize CD Audio: %s", SDL_GetError());
return;
}
S32 numDrives = SDL_CDNumDrives();
if (numDrives == 0)
{
Con::printf(" No drives found.");
return;
}
for (int i = 0; i < numDrives; ++i)
{
const char * deviceName = SDL_CDName(i);
Con::printf(" Installing CD Audio device: %s", deviceName);
UnixRedBookDevice * device = new UnixRedBookDevice;
device->setDeviceInfo(i, deviceName);
RedBook::installDevice(device);
}
Con::printf(" ");
#endif // !defined(__FreeBSD__)
}
//------------------------------------------------------------------------------
void PollRedbookDevices()
{
#if !defined(__FreeBSD__)
UnixRedBookDevice *device = dynamic_cast<UnixRedBookDevice*>(RedBook::getCurrentDevice());
if (device == NULL || !device->isPlaying())
return;
static const U32 PollDelay = 1000;
static U32 lastPollTime = 0;
U32 curTime = Platform::getVirtualMilliseconds();
if (lastPollTime != 0 &&
(curTime - lastPollTime) < PollDelay)
return;
lastPollTime = curTime;
if (device->isPlaying())
{
device->updateStatus();
if (!device->isPlaying())
RedBook::handleCallback(RedBook::PlayFinished);
}
#endif // !defined(__FreeBSD__)
}