diff options
Diffstat (limited to 'backends/audiocd/win32/win32-audiocd.cpp')
| -rw-r--r-- | backends/audiocd/win32/win32-audiocd.cpp | 388 |
1 files changed, 388 insertions, 0 deletions
diff --git a/backends/audiocd/win32/win32-audiocd.cpp b/backends/audiocd/win32/win32-audiocd.cpp new file mode 100644 index 0000000000..6c057efdb7 --- /dev/null +++ b/backends/audiocd/win32/win32-audiocd.cpp @@ -0,0 +1,388 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Original license header: + * + * Cabal - Legacy Game Implementations + * + * Cabal is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifdef WIN32 + +#define WIN32_LEAN_AND_MEAN +#include <windows.h> +#undef ARRAYSIZE // winnt.h defines ARRAYSIZE, but we want our own one... + +#include "backends/audiocd/win32/win32-audiocd.h" + +#include "audio/audiostream.h" +#include "backends/audiocd/audiocd-stream.h" +#include "backends/audiocd/default/default-audiocd.h" +#include "common/array.h" +#include "common/config-manager.h" +#include "common/debug.h" +#include "common/mutex.h" +#include "common/queue.h" +#include "common/str.h" +#include "common/timer.h" + +#include <winioctl.h> +#if _MSC_VER < 1900 +// WORKAROUND: Older versions of MSVC might not supply DDK headers by default. +// Visual Studio 2015 contains the required headers. We use a compatability +// header from MinGW's w32api for all older versions. +// TODO: Limit this to the Visual Studio versions which actually require this. +#include "msvc/ntddcdrm.h" +#elif defined(__MINGW32__) && !defined(__MINGW64__) +// Classic MinGW uses non standard paths for DDK headers. +#include <ddk/ntddcdrm.h> +#else +#include <ntddcdrm.h> +#endif + +class Win32AudioCDStream : public AudioCDStream { +public: + Win32AudioCDStream(HANDLE handle, const TRACK_DATA &startEntry, const TRACK_DATA &endEntry); + ~Win32AudioCDStream(); + +protected: + uint getStartFrame() const; + uint getEndFrame() const; + bool readFrame(int frame, int16 *buffer); + +private: + HANDLE _driveHandle; + const TRACK_DATA &_startEntry, &_endEntry; + + enum { + // The CD-ROM pre-gap is 2s + kPreGapFrames = kFramesPerSecond * 2 + }; + + static int getFrameCount(const TRACK_DATA &data) { + int time = data.Address[1]; + time *= kSecondsPerMinute; + time += data.Address[2]; + time *= kFramesPerSecond; + time += data.Address[3]; + return time; + } +}; + +Win32AudioCDStream::Win32AudioCDStream(HANDLE handle, const TRACK_DATA &startEntry, const TRACK_DATA &endEntry) : + _driveHandle(handle), _startEntry(startEntry), _endEntry(endEntry) { + // We fill the buffer here already to prevent any out of sync issues due + // to the CD not yet having spun up. + startTimer(true); +} + +Win32AudioCDStream::~Win32AudioCDStream() { + stopTimer(); +} + +uint Win32AudioCDStream::getStartFrame() const { + return getFrameCount(_startEntry); +} + +uint Win32AudioCDStream::getEndFrame() const { + return getFrameCount(_endEntry); +} + +bool Win32AudioCDStream::readFrame(int frame, int16 *buffer) { + // Request to read that frame + RAW_READ_INFO readAudio; + memset(&readAudio, 0, sizeof(readAudio)); + readAudio.DiskOffset.QuadPart = (frame - kPreGapFrames) * 2048; + readAudio.SectorCount = 1; + readAudio.TrackMode = CDDA; + + DWORD bytesReturned; + return DeviceIoControl( + _driveHandle, + IOCTL_CDROM_RAW_READ, + &readAudio, + sizeof(readAudio), + buffer, + kBytesPerFrame, + &bytesReturned, + NULL); +} + + +class Win32AudioCDManager : public DefaultAudioCDManager { +public: + Win32AudioCDManager(); + ~Win32AudioCDManager(); + + bool open(); + void close(); + bool play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate = false); + +protected: + bool openCD(int drive); + bool openCD(const Common::String &drive); + +private: + bool loadTOC(); + + typedef Common::Array<char> DriveList; + DriveList detectDrives(); + bool tryAddDrive(char drive, DriveList &drives); + + HANDLE _driveHandle; + int _firstTrack, _lastTrack; + Common::Array<TRACK_DATA> _tocEntries; +}; + +Win32AudioCDManager::Win32AudioCDManager() { + _driveHandle = INVALID_HANDLE_VALUE; + _firstTrack = _lastTrack = 0; +} + +Win32AudioCDManager::~Win32AudioCDManager() { + close(); +} + +bool Win32AudioCDManager::open() { + close(); + + if (openRealCD()) + return true; + + return DefaultAudioCDManager::open(); +} + +bool Win32AudioCDManager::openCD(int drive) { + // Fetch the drive list + DriveList drives = detectDrives(); + if (drive >= (int)drives.size()) + return false; + + debug(1, "Opening CD drive %c:\\", drives[drive]); + + // Construct the drive path and try to open it + Common::String drivePath = Common::String::format("\\\\.\\%c:", drives[drive]); + _driveHandle = CreateFileA(drivePath.c_str(), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); + if (_driveHandle == INVALID_HANDLE_VALUE) { + warning("Failed to open drive %c:\\, error %d", drives[drive], (int)GetLastError()); + return false; + } + + if (!loadTOC()) { + close(); + return false; + } + + return true; +} + +bool Win32AudioCDManager::openCD(const Common::String &drive) { + // Just some bounds checking + if (drive.empty() || drive.size() > 3) + return false; + + if (!Common::isAlpha(drive[0]) || drive[1] != ':') + return false; + + if (drive[2] != 0 && drive[2] != '\\') + return false; + + DriveList drives; + if (!tryAddDrive(toupper(drive[0]), drives)) + return false; + + // Construct the drive path and try to open it + Common::String drivePath = Common::String::format("\\\\.\\%c:", drives[0]); + _driveHandle = CreateFileA(drivePath.c_str(), GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE, 0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); + if (_driveHandle == INVALID_HANDLE_VALUE) { + warning("Failed to open drive %c:\\, error %d", drives[0], (int)GetLastError()); + return false; + } + + if (!loadTOC()) { + close(); + return false; + } + + return true; +} + +void Win32AudioCDManager::close() { + DefaultAudioCDManager::close(); + + if (_driveHandle != INVALID_HANDLE_VALUE) { + CloseHandle(_driveHandle); + _driveHandle = INVALID_HANDLE_VALUE; + } + + _firstTrack = _lastTrack = 0; + _tocEntries.clear(); +} + +bool Win32AudioCDManager::play(int track, int numLoops, int startFrame, int duration, bool onlyEmulate) { + // Prefer emulation + if (DefaultAudioCDManager::play(track, numLoops, startFrame, duration, onlyEmulate)) + return true; + + // If we're set to only emulate, or have no CD drive, return here + if (onlyEmulate || _driveHandle == INVALID_HANDLE_VALUE) + return false; + + // HACK: For now, just assume that track number is right + // That only works because ScummVM uses the wrong track number anyway + + if (track >= (int)_tocEntries.size() - 1) { + warning("No such track %d", track); + return false; + } + + // Bail if the track isn't an audio track + if ((_tocEntries[track].Control & 0x04) != 0) { + warning("Track %d is not audio", track); + return false; + } + + // Create the AudioStream and play it + debug(1, "Playing CD track %d", track); + + Audio::SeekableAudioStream *audioStream = new Win32AudioCDStream(_driveHandle, _tocEntries[track], _tocEntries[track + 1]); + + Audio::Timestamp start = Audio::Timestamp(0, startFrame, 75); + Audio::Timestamp end = (duration == 0) ? audioStream->getLength() : Audio::Timestamp(0, startFrame + duration, 75); + + // Fake emulation since we're really playing an AudioStream + _emulating = true; + + _mixer->playStream( + Audio::Mixer::kMusicSoundType, + &_handle, + Audio::makeLoopingAudioStream(audioStream, start, end, (numLoops < 1) ? numLoops + 1 : numLoops), + -1, + _cd.volume, + _cd.balance, + DisposeAfterUse::YES, + true); + return true; +} + +bool Win32AudioCDManager::loadTOC() { + CDROM_READ_TOC_EX tocRequest; + memset(&tocRequest, 0, sizeof(tocRequest)); + tocRequest.Format = CDROM_READ_TOC_EX_FORMAT_TOC; + tocRequest.Msf = 1; + tocRequest.SessionTrack = 0; + + DWORD bytesReturned; + CDROM_TOC tocData; + bool result = DeviceIoControl( + _driveHandle, + IOCTL_CDROM_READ_TOC_EX, + &tocRequest, + sizeof(tocRequest), + &tocData, + sizeof(tocData), + &bytesReturned, + NULL); + if (!result) { + debug("Failed to query the CD TOC: %d", (int)GetLastError()); + return false; + } + + _firstTrack = tocData.FirstTrack; + _lastTrack = tocData.LastTrack; +#if 0 + debug("First Track: %d", tocData.FirstTrack); + debug("Last Track: %d", tocData.LastTrack); +#endif + + for (uint32 i = 0; i < (bytesReturned - 4) / sizeof(TRACK_DATA); i++) + _tocEntries.push_back(tocData.TrackData[i]); + +#if 0 + for (uint32 i = 0; i < _tocEntries.size(); i++) { + const TRACK_DATA &entry = _tocEntries[i]; + debug("Entry:"); + debug("\tTrack: %d", entry.TrackNumber); + debug("\tAdr: %d", entry.Adr); + debug("\tCtrl: %d", entry.Control); + debug("\tMSF: %d:%d:%d\n", entry.Address[1], entry.Address[2], entry.Address[3]); + } +#endif + + return true; +} + +Win32AudioCDManager::DriveList Win32AudioCDManager::detectDrives() { + DriveList drives; + + // Try to get the game path's drive + char gameDrive = 0; + if (ConfMan.hasKey("path")) { + Common::String gamePath = ConfMan.get("path"); + char fullPath[MAX_PATH]; + DWORD result = GetFullPathNameA(gamePath.c_str(), sizeof(fullPath), fullPath, 0); + + if (result > 0 && result < sizeof(fullPath) && Common::isAlpha(fullPath[0]) && fullPath[1] == ':' && tryAddDrive(toupper(fullPath[0]), drives)) + gameDrive = drives[0]; + } + + // Try adding the rest of the drives + for (char drive = 'A'; drive <= 'Z'; drive++) + if (drive != gameDrive) + tryAddDrive(drive, drives); + + return drives; +} + +bool Win32AudioCDManager::tryAddDrive(char drive, DriveList &drives) { + Common::String drivePath = Common::String::format("%c:\\", drive); + + // Ensure it's an actual CD drive + if (GetDriveTypeA(drivePath.c_str()) != DRIVE_CDROM) + return false; + + debug(2, "Detected drive %c:\\ as a CD drive", drive); + drives.push_back(drive); + return true; +} + +AudioCDManager *createWin32AudioCDManager() { + return new Win32AudioCDManager(); +} + +#endif // WIN32
\ No newline at end of file |