/* This file is part of the KDE project.
Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
This library is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 2.1 or 3 of the License.
This library 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 Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "qaudiocdreader.h"
#include <dshow.h>
#include <initguid.h>
#include <winioctl.h> // needed for FILE_DEVICE_CD_ROM etc
#define IOCTL_CDROM_READ_TOC CTL_CODE(FILE_DEVICE_CD_ROM, 0x0000, METHOD_BUFFERED, FILE_READ_ACCESS)
#define IOCTL_CDROM_RAW_READ CTL_CODE(FILE_DEVICE_CD_ROM, 0x000F, METHOD_OUT_DIRECT, FILE_READ_ACCESS)
QT_BEGIN_NAMESPACE
#ifndef QT_NO_PHONON_MEDIACONTROLLER
namespace Phonon
{
namespace DS9
{
// {CA46BFE1-D55B-4adf-B803-BC2B9AD57824}
DEFINE_GUID(IID_ITitleInterface,
0xca46bfe1, 0xd55b, 0x4adf, 0xb8, 0x3, 0xbc, 0x2b, 0x9a, 0xd5, 0x78, 0x24);
struct TRACK_DATA {
UCHAR Reserved;
UCHAR Control : 4;
UCHAR Adr : 4;
UCHAR TrackNumber;
UCHAR Reserved1;
UCHAR Address[4];
};
struct CDROM_TOC {
UCHAR Length[2];
UCHAR FirstTrack;
UCHAR LastTrack;
TRACK_DATA TrackData[100];
};
struct WaveStructure
{
WaveStructure();
char riff[4];
qint32 chunksize;
char wave[4];
char fmt[4];
const qint32 chunksize2;
const quint16 formatTag;
const quint16 nChannels;
const quint32 nSamplesPerSec;
const quint32 nAvgBytesPerSec;
const quint16 nBlockAlign;
const quint16 bitsPerSample;
char data[4];
qint32 dataLength;
};
enum TRACK_MODE_TYPE {
YellowMode2,
XAForm2,
CDDA
};
struct RAW_READ_INFO {
LARGE_INTEGER DiskOffset;
ULONG SectorCount;
TRACK_MODE_TYPE TrackMode;
};
class QAudioCDReader : public QAsyncReader, public ITitleInterface
{
public:
QAudioCDReader(QBaseFilter *parent, QChar drive = QChar());
~QAudioCDReader();
//reimplementation from IUnknown
STDMETHODIMP_(ULONG) AddRef();
STDMETHODIMP_(ULONG) Release();
STDMETHODIMP Length(LONGLONG *,LONGLONG *);
STDMETHODIMP QueryInterface(REFIID iid, void** out);
QList<qint64> titles() const;
protected:
HRESULT read(LONGLONG pos, LONG length, BYTE *buffer, LONG *actual);
private:
HANDLE m_cddrive;
CDROM_TOC m_toc;
WaveStructure m_waveHeader;
qint64 m_trackAddress;
};
#define SECTOR_SIZE 2352
#define NB_SECTORS_READ 20
static const AM_MEDIA_TYPE audioCDMediaType = { MEDIATYPE_Stream, MEDIASUBTYPE_WAVE, TRUE, FALSE, 1, GUID_NULL, 0, 0, 0};
int addressToSectors(UCHAR address[4])
{
return ((address[0] * 60 + address[1]) * 60 + address[2]) * 75 + address[3] - 150;
}
WaveStructure::WaveStructure() : chunksize(0), chunksize2(16),
formatTag(WAVE_FORMAT_PCM), nChannels(2), nSamplesPerSec(44100), nAvgBytesPerSec(176400), nBlockAlign(4), bitsPerSample(16),
dataLength(0)
{
qMemCopy(riff, "RIFF", 4);
qMemCopy(wave, "WAVE", 4);
qMemCopy(fmt, "fmt ", 4);
qMemCopy(data, "data", 4);
}
QAudioCDReader::QAudioCDReader(QBaseFilter *parent, QChar drive) : QAsyncReader(parent, QVector<AM_MEDIA_TYPE>() << audioCDMediaType)
{
//now open the cd-drive
QString path;
if (drive.isNull()) {
path = QString::fromLatin1("\\\\.\\Cdrom0");
} else {
path = QString::fromLatin1("\\\\.\\%1:").arg(drive);
}
m_cddrive = ::CreateFile((const wchar_t *)path.utf16(), GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
qMemSet(&m_toc, 0, sizeof(CDROM_TOC));
//read the TOC
DWORD bytesRead = 0;
bool tocRead = ::DeviceIoControl(m_cddrive, IOCTL_CDROM_READ_TOC, 0, 0, &m_toc, sizeof(CDROM_TOC), &bytesRead, 0);
if (!tocRead) {
qWarning("unable to load the TOC from the CD");
return;
}
m_trackAddress = addressToSectors(m_toc.TrackData[0].Address);
const qint32 nbSectorsToRead = (addressToSectors(m_toc.TrackData[m_toc.LastTrack + 1 - m_toc.FirstTrack].Address)
- m_trackAddress);
const qint32 dataLength = nbSectorsToRead * SECTOR_SIZE;
m_waveHeader.chunksize = 4 + (8 + m_waveHeader.chunksize2) + (8 + dataLength);
m_waveHeader.dataLength = dataLength;
}
QAudioCDReader::~QAudioCDReader()
{
::CloseHandle(m_cddrive);
}
STDMETHODIMP_(ULONG) QAudioCDReader::AddRef()
{
return QAsyncReader::AddRef();
}
STDMETHODIMP_(ULONG) QAudioCDReader::Release()
{
return QAsyncReader::Release();
}
STDMETHODIMP QAudioCDReader::Length(LONGLONG *total,LONGLONG *available)
{
const LONGLONG length = sizeof(WaveStructure) + m_waveHeader.dataLength;
if (total) {
*total = length;
}
if (available) {
*available = length;
}
return S_OK;
}
STDMETHODIMP QAudioCDReader::QueryInterface(REFIID iid, void** out)
{
if (!out) {
return E_POINTER;
}
if (iid == IID_ITitleInterface) {
//we reroute that to the pin
*out = static_cast<ITitleInterface*>(this);
AddRef();
return S_OK;
} else {
return QAsyncReader::QueryInterface(iid, out);
}
}
HRESULT QAudioCDReader::read(LONGLONG pos, LONG length, BYTE *buffer, LONG *actual)
{
LONG nbRead = 0;
if (actual) {
*actual = 0;
}
if (pos < sizeof(WaveStructure)) {
//we first copy the content of the structure
nbRead = qMin(LONG(sizeof(WaveStructure) - pos), length);
qMemCopy(buffer, reinterpret_cast<char*>(&m_waveHeader) + pos, nbRead);
}
const LONGLONG posInTrack = pos - sizeof(WaveStructure) + nbRead;
const int bytesLeft = qMin(m_waveHeader.dataLength - posInTrack, LONGLONG(length - nbRead));
if (bytesLeft > 0) {
//we need to read again
const int surplus = posInTrack % SECTOR_SIZE; //how many bytes too much at the beginning
const int firstSector = posInTrack / SECTOR_SIZE,
lastSector = (posInTrack + length - 1) / SECTOR_SIZE;
const int sectorsNeeded = lastSector - firstSector + 1;
int sectorsRead = 0;
QByteArray ba(sectorsNeeded * SECTOR_SIZE, 0);
RAW_READ_INFO ReadInfo;
ReadInfo.TrackMode = CDDA; // Always use CDDA (numerical: 2)
ReadInfo.DiskOffset.QuadPart = (m_trackAddress + firstSector) * 2048;
ReadInfo.SectorCount = qMin(sectorsNeeded - sectorsRead, NB_SECTORS_READ);
while (ReadInfo.SectorCount) {
DWORD dummy = 0;
if (::DeviceIoControl( m_cddrive, IOCTL_CDROM_RAW_READ,
&ReadInfo, sizeof(ReadInfo),
ba.data() + sectorsRead * SECTOR_SIZE,
ReadInfo.SectorCount * SECTOR_SIZE,
&dummy, NULL ) )
{
ReadInfo.DiskOffset.QuadPart += ReadInfo.SectorCount * 2048;
sectorsRead += ReadInfo.SectorCount;
ReadInfo.SectorCount = qMin(sectorsNeeded - sectorsRead, NB_SECTORS_READ);
}else {
qWarning("an error occurred while reading from the media");
return S_FALSE;
}
}
//consume bytes on the buffer
qMemCopy(buffer + nbRead, ba.data() + surplus, bytesLeft);
//at this point we have all we need in the buffer
nbRead += bytesLeft;
}
if (actual) {
*actual = nbRead;
}
return nbRead == length ? S_OK : S_FALSE;
}
QList<qint64> QAudioCDReader::titles() const
{
QList<qint64> ret;
ret << 0;
for(int i = m_toc.FirstTrack; i <= m_toc.LastTrack ; ++i) {
const uchar *address = m_toc.TrackData[i].Address;
ret << ((address[0] * 60 + address[1]) * 60 + address[2]) * 1000 + address[3]*1000/75 - 2000;
}
return ret;
}
QAudioCDPlayer::QAudioCDPlayer() : QBaseFilter(CLSID_NULL)
{
new QAudioCDReader(this);
}
QAudioCDPlayer::~QAudioCDPlayer()
{
}
STDMETHODIMP QAudioCDPlayer::QueryInterface(REFIID iid, void** out)
{
if (iid == IID_ITitleInterface) {
//we reroute that to the pin
return pins().first()->QueryInterface(iid, out);
} else {
return QBaseFilter::QueryInterface(iid, out);
}
}
}
}
#endif //QT_NO_PHONON_MEDIACONTROLLER
QT_END_NAMESPACE