/src/3rdparty/phonon/ds9/qaudiocdreader.cpp
C++ | 312 lines | 224 code | 62 blank | 26 comment | 20 complexity | 13709abb4145a408d7279f50c72ad204 MD5 | raw file
- /* 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