1 |
/* |
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* sys_windows.cpp - System dependent routines, Windows implementation |
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* |
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* Basilisk II (C) 1997-2005 Christian Bauer |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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#include "sysdeps.h" |
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|
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#define WIN32_LEAN_AND_MEAN |
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#include <windows.h> |
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#include <winioctl.h> |
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|
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#include <string> |
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using std::string; |
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|
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#include <algorithm> |
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using std::min; |
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|
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#include "main.h" |
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#include "macos_util.h" |
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#include "prefs.h" |
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#include "user_strings.h" |
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#include "sys.h" |
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|
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#include "cd_defs.h" |
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#include "cdenable/ntcd.h" |
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#include "cdenable/cache.h" |
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#include "cdenable/eject_nt.h" |
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|
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#define DEBUG 0 |
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#include "debug.h" |
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|
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|
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// Supported media types |
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enum { |
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MEDIA_FLOPPY = 1, |
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MEDIA_CD = 2, |
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MEDIA_HD = 4, |
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MEDIA_REMOVABLE = MEDIA_FLOPPY | MEDIA_CD |
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}; |
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|
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// File handles are pointers to these structures |
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struct file_handle { |
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char *name; // Copy of device/file name |
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HANDLE fh; |
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bool is_file; // Flag: plain file or physical device? |
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bool is_floppy; // Flag: floppy device |
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bool is_cdrom; // Flag: CD-ROM device |
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bool read_only; // Copy of Sys_open() flag |
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loff_t start_byte; // Size of file header (if any) |
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loff_t file_size; // Size of file data (only valid if is_file is true) |
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cachetype cache; |
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bool is_media_present; |
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}; |
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|
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// Open file handles |
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struct open_file_handle { |
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file_handle *fh; |
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open_file_handle *next; |
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}; |
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static open_file_handle *open_file_handles = NULL; |
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|
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// File handle of first floppy drive (for SysMountFirstFloppy()) |
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static file_handle *first_floppy = NULL; |
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|
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// CD-ROM variables |
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static const int CD_READ_AHEAD_SECTORS = 16; |
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static char *sector_buffer = NULL; |
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|
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// Prototypes |
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static bool is_cdrom_readable(file_handle *fh); |
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|
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|
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/* |
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* Initialization |
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*/ |
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|
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void SysInit(void) |
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{ |
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// Initialize CD-ROM driver |
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sector_buffer = (char *)VirtualAlloc(NULL, 8192, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE); |
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CdenableSysInstallStart(); |
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} |
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|
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|
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/* |
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* Deinitialization |
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*/ |
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|
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void SysExit(void) |
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{ |
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if (sector_buffer) { |
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VirtualFree(sector_buffer, 0, MEM_RELEASE ); |
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sector_buffer = NULL; |
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} |
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} |
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|
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|
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/* |
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* Manage open file handles |
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*/ |
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|
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static void sys_add_file_handle(file_handle *fh) |
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{ |
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open_file_handle *p = new open_file_handle; |
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p->fh = fh; |
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p->next = open_file_handles; |
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open_file_handles = p; |
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} |
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|
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static void sys_remove_file_handle(file_handle *fh) |
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{ |
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open_file_handle *p = open_file_handles; |
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open_file_handle *q = NULL; |
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|
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while (p) { |
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if (p->fh == fh) { |
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if (q) |
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q->next = p->next; |
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else |
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open_file_handles = p->next; |
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delete p; |
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break; |
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} |
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q = p; |
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p = p->next; |
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} |
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} |
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|
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|
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/* |
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* Mount removable media now |
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*/ |
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|
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void mount_removable_media(int media) |
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{ |
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for (open_file_handle *p = open_file_handles; p != NULL; p = p->next) { |
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file_handle * const fh = p->fh; |
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|
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if (fh->is_cdrom && (media & MEDIA_CD)) { |
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cache_clear(&fh->cache); |
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fh->start_byte = 0; |
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|
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if (fh->fh && fh->fh != INVALID_HANDLE_VALUE) |
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CloseHandle(fh->fh); |
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|
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// Re-open device |
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char device_name[MAX_PATH]; |
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sprintf(device_name, "\\\\.\\%c:", fh->name[0]); |
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fh->fh = CreateFile( |
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device_name, |
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GENERIC_READ, |
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FILE_SHARE_READ | FILE_SHARE_WRITE, |
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NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
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|
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if (fh->fh != INVALID_HANDLE_VALUE) { |
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fh->is_media_present = is_cdrom_readable(fh); |
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if (fh->is_media_present) |
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MountVolume(fh); |
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} else { |
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fh->is_media_present = false; |
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} |
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} |
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} |
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} |
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|
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|
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/* |
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* Account for media that has just arrived |
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*/ |
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|
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void SysMediaArrived(void) |
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{ |
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mount_removable_media(MEDIA_REMOVABLE); |
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} |
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|
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|
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/* |
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* Account for media that has just been removed |
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*/ |
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|
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void SysMediaRemoved(void) |
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{ |
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} |
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|
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|
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/* |
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* Mount first floppy disk |
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*/ |
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|
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void SysMountFirstFloppy(void) |
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{ |
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if (first_floppy) |
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MountVolume(first_floppy); |
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} |
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|
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|
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/* |
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* This gets called when no "floppy" prefs items are found |
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* It scans for available floppy drives and adds appropriate prefs items |
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*/ |
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|
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void SysAddFloppyPrefs(void) |
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{ |
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} |
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|
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|
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/* |
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* This gets called when no "disk" prefs items are found |
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* It scans for available HFS volumes and adds appropriate prefs items |
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*/ |
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|
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void SysAddDiskPrefs(void) |
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{ |
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} |
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|
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|
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/* |
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* This gets called when no "cdrom" prefs items are found |
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* It scans for available CD-ROM drives and adds appropriate prefs items |
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*/ |
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|
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void SysAddCDROMPrefs(void) |
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{ |
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// Don't scan for drives if nocdrom option given |
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if (PrefsFindBool("nocdrom")) |
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return; |
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|
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for (char letter = 'C'; letter <= 'Z'; letter++) { |
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int i = (int)(letter - 'A'); |
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string rootdir = letter + ":\\"; |
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if (GetDriveType(rootdir.c_str()) == DRIVE_CDROM) |
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PrefsAddString("cdrom", rootdir.c_str()); |
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} |
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} |
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|
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|
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/* |
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* Add default serial prefs (must be added, even if no ports present) |
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*/ |
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|
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void SysAddSerialPrefs(void) |
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{ |
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PrefsAddString("seriala", "COM1"); |
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PrefsAddString("serialb", "COM2"); |
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} |
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|
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|
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/* |
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* Read CD-ROM |
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* Must give cd some time to settle |
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* Can't give too much however, would be annoying, this is difficult.. |
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*/ |
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|
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static inline int cd_read_with_retry(file_handle *fh, ULONG LBA, int count, char *buf ) |
270 |
{ |
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if (!fh || !fh->fh) |
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return 0; |
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|
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return CdenableSysReadCdBytes(fh->fh, LBA, count, buf); |
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} |
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|
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static int cd_read(file_handle *fh, cachetype *cptr, ULONG LBA, int count, char *buf) |
278 |
{ |
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ULONG l1, l2, cc; |
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int i, c_count, got_bytes = 0, nblocks, s_inx, ss, first_block; |
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int ok_bytes = 0; |
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char *ptr, *ttptr = 0, *tmpbuf; |
283 |
|
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if (count <= 0) |
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return 0; |
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|
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if (!fh || !fh->fh) |
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return 0; |
289 |
|
290 |
ss = 2048; |
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l1 = (LBA / ss) * ss; |
292 |
l2 = ((LBA + count - 1 + ss) / ss) * ss; |
293 |
cc = l2 - l1; |
294 |
nblocks = cc / ss; |
295 |
first_block = LBA / ss; |
296 |
|
297 |
ptr = buf; |
298 |
s_inx = LBA - l1; |
299 |
c_count = ss - s_inx; |
300 |
if (c_count > count) |
301 |
c_count = count; |
302 |
|
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for (i = 0; i < nblocks; i++) { |
304 |
if (!cache_get(cptr, first_block + i, sector_buffer)) |
305 |
break; |
306 |
|
307 |
memcpy(ptr, sector_buffer + s_inx, c_count); |
308 |
ok_bytes += c_count; |
309 |
ptr += c_count; |
310 |
s_inx = 0; |
311 |
c_count = ss; |
312 |
if (c_count > count - ok_bytes) |
313 |
c_count = count - ok_bytes; |
314 |
} |
315 |
|
316 |
if (i != nblocks && count != ok_bytes) { |
317 |
int bytes_left = count - ok_bytes; |
318 |
int blocks_left = nblocks - i; |
319 |
int alignedleft; |
320 |
|
321 |
// NEW read ahead code: |
322 |
int ahead = CD_READ_AHEAD_SECTORS; |
323 |
if (blocks_left < ahead) { |
324 |
nblocks += (ahead - blocks_left); |
325 |
blocks_left = ahead; |
326 |
} |
327 |
|
328 |
alignedleft = blocks_left*ss; |
329 |
|
330 |
tmpbuf = (char *)VirtualAlloc( |
331 |
NULL, alignedleft, |
332 |
MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE); |
333 |
if (tmpbuf) { |
334 |
got_bytes = cd_read_with_retry(fh, (first_block + i) * ss, alignedleft, tmpbuf); |
335 |
if (got_bytes != alignedleft) { |
336 |
// should never happen |
337 |
// Yes it does ... |
338 |
if (got_bytes < 0) |
339 |
got_bytes = 0; |
340 |
if (c_count > got_bytes) |
341 |
c_count = got_bytes; |
342 |
if (c_count > 0) { |
343 |
ttptr = tmpbuf; |
344 |
memcpy(ptr, ttptr + s_inx, c_count); |
345 |
ok_bytes += c_count; |
346 |
} |
347 |
VirtualFree(tmpbuf, 0, MEM_RELEASE ); |
348 |
return ok_bytes; |
349 |
} |
350 |
ttptr = tmpbuf; |
351 |
for ( ; i < nblocks; i++) { |
352 |
if (c_count > 0) { |
353 |
memcpy(ptr, ttptr + s_inx, c_count); |
354 |
ok_bytes += c_count; |
355 |
ptr += c_count; |
356 |
} |
357 |
s_inx = 0; |
358 |
c_count = ss; |
359 |
if (c_count > count - ok_bytes) |
360 |
c_count = count - ok_bytes; |
361 |
cache_put(cptr, first_block + i, ttptr, ss); |
362 |
ttptr += ss; |
363 |
} |
364 |
VirtualFree(tmpbuf, 0, MEM_RELEASE ); |
365 |
} |
366 |
} |
367 |
|
368 |
return ok_bytes; |
369 |
} |
370 |
|
371 |
|
372 |
/* |
373 |
* Check if file handle FH represents a readable CD-ROM |
374 |
*/ |
375 |
|
376 |
static bool is_cdrom_readable(file_handle *fh) |
377 |
{ |
378 |
if (!fh || !fh->fh) |
379 |
return false; |
380 |
|
381 |
cache_clear(&fh->cache); |
382 |
|
383 |
DWORD dummy; |
384 |
bool result = (0 != DeviceIoControl( |
385 |
fh->fh, |
386 |
IOCTL_STORAGE_CHECK_VERIFY, |
387 |
NULL, 0, |
388 |
NULL, 0, |
389 |
&dummy, |
390 |
NULL)); |
391 |
if (!result) { |
392 |
const size_t n_bytes = 2048; |
393 |
char *buffer = (char *)VirtualAlloc(NULL, n_bytes, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE); |
394 |
if (buffer) { |
395 |
result = (cd_read_with_retry(fh, 0, n_bytes, buffer) == n_bytes); |
396 |
VirtualFree(buffer, 0, MEM_RELEASE); |
397 |
} |
398 |
} |
399 |
|
400 |
return result; |
401 |
} |
402 |
|
403 |
|
404 |
/* |
405 |
* Check if NAME represents a read-only file |
406 |
*/ |
407 |
|
408 |
static bool is_read_only_path(const char *name) |
409 |
{ |
410 |
DWORD attrib = GetFileAttributes((char *)name); |
411 |
return (attrib != INVALID_FILE_ATTRIBUTES && ((attrib & FILE_ATTRIBUTE_READONLY) != 0)); |
412 |
} |
413 |
|
414 |
|
415 |
/* |
416 |
* Open file/device, create new file handle (returns NULL on error) |
417 |
*/ |
418 |
|
419 |
void *Sys_open(const char *path_name, bool read_only) |
420 |
{ |
421 |
file_handle * fh = NULL; |
422 |
|
423 |
// Parse path name and options |
424 |
char name[MAX_PATH]; |
425 |
strcpy(name, path_name); |
426 |
|
427 |
// Normalize floppy / cd path |
428 |
int name_len = strlen(name); |
429 |
if (name_len == 1 && isalpha(name[0])) |
430 |
strcat(name, ":\\"); |
431 |
if (name_len > 0 && name[name_len - 1] == ':') |
432 |
strcat(name, "\\"); |
433 |
name_len = strlen(name); |
434 |
|
435 |
D(bug("Sys_open(%s, %s)\n", name, read_only ? "read-only" : "read/write")); |
436 |
if (name_len > 0 && name[name_len - 1] == '\\') { |
437 |
int type = GetDriveType(name); |
438 |
|
439 |
if (type == DRIVE_CDROM) { |
440 |
read_only = true; |
441 |
char device_name[MAX_PATH]; |
442 |
sprintf(device_name, "\\\\.\\%c:", name[0]); |
443 |
|
444 |
// Open device |
445 |
HANDLE h = CreateFile( |
446 |
device_name, |
447 |
GENERIC_READ, |
448 |
0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
449 |
|
450 |
if (h != INVALID_HANDLE_VALUE) { |
451 |
fh = new file_handle; |
452 |
fh->name = strdup(name); |
453 |
fh->fh = h; |
454 |
fh->is_file = false; |
455 |
fh->read_only = read_only; |
456 |
fh->start_byte = 0; |
457 |
fh->is_floppy = false; |
458 |
fh->is_cdrom = true; |
459 |
memset(&fh->cache, 0, sizeof(cachetype)); |
460 |
cache_init(&fh->cache); |
461 |
cache_clear(&fh->cache); |
462 |
if (!PrefsFindBool("nocdrom")) |
463 |
fh->is_media_present = is_cdrom_readable(fh); |
464 |
} |
465 |
} |
466 |
} |
467 |
|
468 |
else { // Hard file |
469 |
|
470 |
// Check if write access is allowed, set read-only flag if not |
471 |
if (!read_only && is_read_only_path(name)) |
472 |
read_only = true; |
473 |
|
474 |
// Open file |
475 |
HANDLE h = CreateFile( |
476 |
name, |
477 |
read_only ? GENERIC_READ : GENERIC_READ | GENERIC_WRITE, |
478 |
0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
479 |
|
480 |
if (h == INVALID_HANDLE_VALUE && !read_only) { |
481 |
// Read-write failed, try read-only |
482 |
read_only = true; |
483 |
h = CreateFile( |
484 |
name, |
485 |
GENERIC_READ, |
486 |
0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
487 |
} |
488 |
|
489 |
if (h != INVALID_HANDLE_VALUE) { |
490 |
fh = new file_handle; |
491 |
fh->name = strdup(name); |
492 |
fh->fh = h; |
493 |
fh->is_file = true; |
494 |
fh->read_only = read_only; |
495 |
fh->start_byte = 0; |
496 |
fh->is_floppy = false; |
497 |
fh->is_cdrom = false; |
498 |
|
499 |
// Detect disk image file layout |
500 |
loff_t size = GetFileSize(h, NULL); |
501 |
DWORD bytes_read; |
502 |
uint8 data[256]; |
503 |
ReadFile(h, data, sizeof(data), &bytes_read, NULL); |
504 |
FileDiskLayout(size, data, fh->start_byte, fh->file_size); |
505 |
} |
506 |
} |
507 |
|
508 |
if (fh->is_floppy && first_floppy == NULL) |
509 |
first_floppy = fh; |
510 |
|
511 |
if (fh) |
512 |
sys_add_file_handle(fh); |
513 |
|
514 |
return fh; |
515 |
} |
516 |
|
517 |
|
518 |
/* |
519 |
* Close file/device, delete file handle |
520 |
*/ |
521 |
|
522 |
void Sys_close(void *arg) |
523 |
{ |
524 |
file_handle *fh = (file_handle *)arg; |
525 |
if (!fh) |
526 |
return; |
527 |
|
528 |
sys_remove_file_handle(fh); |
529 |
|
530 |
if (fh->is_cdrom) { |
531 |
cache_final(&fh->cache); |
532 |
SysAllowRemoval((void *)fh); |
533 |
} |
534 |
if (fh->fh != NULL) { |
535 |
CloseHandle(fh->fh); |
536 |
fh->fh = NULL; |
537 |
} |
538 |
if (fh->name) |
539 |
free(fh->name); |
540 |
|
541 |
delete fh; |
542 |
} |
543 |
|
544 |
|
545 |
/* |
546 |
* Read "length" bytes from file/device, starting at "offset", to "buffer", |
547 |
* returns number of bytes read (or 0) |
548 |
*/ |
549 |
|
550 |
size_t Sys_read(void *arg, void *buffer, loff_t offset, size_t length) |
551 |
{ |
552 |
file_handle *fh = (file_handle *)arg; |
553 |
if (!fh) |
554 |
return 0; |
555 |
|
556 |
DWORD bytes_read = 0; |
557 |
|
558 |
if (fh->is_file) { |
559 |
// Seek to position |
560 |
LONG lo = (LONG)offset; |
561 |
LONG hi = (LONG)(offset >> 32); |
562 |
DWORD r = SetFilePointer(fh->fh, lo, &hi, FILE_BEGIN); |
563 |
if (r == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) |
564 |
return 0; |
565 |
|
566 |
// Read data |
567 |
if (ReadFile(fh->fh, buffer, length, &bytes_read, NULL) == 0) |
568 |
bytes_read = 0; |
569 |
} |
570 |
else if (fh->is_cdrom) { |
571 |
int bytes_left, try_bytes, got_bytes; |
572 |
char *b = (char *)buffer; |
573 |
bytes_left = length; |
574 |
while (bytes_left) { |
575 |
try_bytes = min(bytes_left, 32768); |
576 |
if (fh->is_cdrom) { |
577 |
got_bytes = cd_read(fh, &fh->cache, (DWORD)offset, try_bytes, b); |
578 |
if (got_bytes != try_bytes && !PrefsFindBool("nocdrom")) |
579 |
fh->is_media_present = is_cdrom_readable(fh); |
580 |
} |
581 |
b += got_bytes; |
582 |
offset += got_bytes; |
583 |
bytes_read += got_bytes; |
584 |
bytes_left -= got_bytes; |
585 |
if (got_bytes != try_bytes) |
586 |
bytes_left = 0; |
587 |
} |
588 |
} |
589 |
// TODO: other media |
590 |
|
591 |
return bytes_read; |
592 |
} |
593 |
|
594 |
|
595 |
/* |
596 |
* Write "length" bytes from "buffer" to file/device, starting at "offset", |
597 |
* returns number of bytes written (or 0) |
598 |
*/ |
599 |
|
600 |
size_t Sys_write(void *arg, void *buffer, loff_t offset, size_t length) |
601 |
{ |
602 |
file_handle *fh = (file_handle *)arg; |
603 |
if (!fh) |
604 |
return 0; |
605 |
|
606 |
DWORD bytes_written = 0; |
607 |
|
608 |
if (fh->is_file) { |
609 |
// Seek to position |
610 |
LONG lo = (LONG)offset; |
611 |
LONG hi = (LONG)(offset >> 32); |
612 |
DWORD r = SetFilePointer(fh->fh, lo, &hi, FILE_BEGIN); |
613 |
if (r == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) |
614 |
return 0; |
615 |
|
616 |
// Write data |
617 |
if (WriteFile(fh->fh, buffer, length, &bytes_written, NULL) == 0) |
618 |
bytes_written = 0; |
619 |
} |
620 |
// TODO: other media |
621 |
|
622 |
return bytes_written; |
623 |
} |
624 |
|
625 |
|
626 |
/* |
627 |
* Return size of file/device (minus header) |
628 |
*/ |
629 |
|
630 |
loff_t SysGetFileSize(void *arg) |
631 |
{ |
632 |
file_handle *fh = (file_handle *)arg; |
633 |
if (!fh) |
634 |
return true; |
635 |
|
636 |
if (fh->is_file) |
637 |
return fh->file_size; |
638 |
else if (fh->is_cdrom) |
639 |
return 0x28A00000; // FIXME: get real CD-ROM size |
640 |
else { |
641 |
// TODO: other media |
642 |
return 0; |
643 |
} |
644 |
} |
645 |
|
646 |
|
647 |
/* |
648 |
* Eject volume (if applicable) |
649 |
*/ |
650 |
|
651 |
void SysEject(void *arg) |
652 |
{ |
653 |
file_handle *fh = (file_handle *)arg; |
654 |
if (!fh) |
655 |
return; |
656 |
|
657 |
if (fh->is_cdrom && fh->fh) { |
658 |
fh->is_media_present = false; |
659 |
// Commented out because there was some problems, but can't remember |
660 |
// exactly ... need to find out |
661 |
// EjectVolume(toupper(*fh->name),false); |
662 |
|
663 |
// Preventing is cumulative, try to make sure it's indeed released now |
664 |
for (int i = 0; i < 10; i++) |
665 |
PreventRemovalOfVolume(fh->fh, false); |
666 |
|
667 |
if (!PrefsFindBool("nocdrom")) { |
668 |
DWORD dummy; |
669 |
DeviceIoControl( |
670 |
fh->fh, |
671 |
IOCTL_STORAGE_EJECT_MEDIA, |
672 |
NULL, 0, |
673 |
NULL, 0, |
674 |
&dummy, |
675 |
NULL |
676 |
); |
677 |
} |
678 |
cache_clear(&fh->cache); |
679 |
fh->start_byte = 0; |
680 |
} |
681 |
// TODO: handle floppies |
682 |
} |
683 |
|
684 |
|
685 |
/* |
686 |
* Format volume (if applicable) |
687 |
*/ |
688 |
|
689 |
bool SysFormat(void *arg) |
690 |
{ |
691 |
file_handle *fh = (file_handle *)arg; |
692 |
if (!fh) |
693 |
return false; |
694 |
|
695 |
//!! |
696 |
return true; |
697 |
} |
698 |
|
699 |
|
700 |
/* |
701 |
* Check if file/device is read-only (this includes the read-only flag on Sys_open()) |
702 |
*/ |
703 |
|
704 |
bool SysIsReadOnly(void *arg) |
705 |
{ |
706 |
file_handle *fh = (file_handle *)arg; |
707 |
if (!fh) |
708 |
return true; |
709 |
|
710 |
return fh->read_only; |
711 |
} |
712 |
|
713 |
|
714 |
/* |
715 |
* Check if the given file handle refers to a fixed or a removable disk |
716 |
*/ |
717 |
|
718 |
bool SysIsFixedDisk(void *arg) |
719 |
{ |
720 |
file_handle *fh = (file_handle *)arg; |
721 |
if (!fh) |
722 |
return true; |
723 |
|
724 |
if (fh->is_file) |
725 |
return true; |
726 |
else if (fh->is_floppy || fh->is_cdrom) |
727 |
return false; |
728 |
else |
729 |
return true; |
730 |
} |
731 |
|
732 |
|
733 |
/* |
734 |
* Check if a disk is inserted in the drive (always true for files) |
735 |
*/ |
736 |
|
737 |
bool SysIsDiskInserted(void *arg) |
738 |
{ |
739 |
file_handle *fh = (file_handle *)arg; |
740 |
if (!fh) |
741 |
return false; |
742 |
|
743 |
if (fh->is_file) |
744 |
return true; |
745 |
else if (fh->is_cdrom && !PrefsFindBool("nocdrom")) { |
746 |
if (PrefsFindBool("pollmedia")) |
747 |
fh->is_media_present = is_cdrom_readable(fh); |
748 |
return fh->is_media_present; |
749 |
} |
750 |
else { |
751 |
// TODO: other media |
752 |
} |
753 |
|
754 |
return false; |
755 |
} |
756 |
|
757 |
|
758 |
/* |
759 |
* Prevent medium removal (if applicable) |
760 |
*/ |
761 |
|
762 |
void SysPreventRemoval(void *arg) |
763 |
{ |
764 |
file_handle *fh = (file_handle *)arg; |
765 |
if (!fh) |
766 |
return; |
767 |
|
768 |
if (fh->is_cdrom && fh->fh) |
769 |
PreventRemovalOfVolume(fh->fh, true); |
770 |
} |
771 |
|
772 |
|
773 |
/* |
774 |
* Allow medium removal (if applicable) |
775 |
*/ |
776 |
|
777 |
void SysAllowRemoval(void *arg) |
778 |
{ |
779 |
file_handle *fh = (file_handle *)arg; |
780 |
if (!fh) |
781 |
return; |
782 |
|
783 |
if (fh->is_cdrom && fh->fh) |
784 |
PreventRemovalOfVolume(fh->fh, false); |
785 |
} |
786 |
|
787 |
|
788 |
/* |
789 |
* Read CD-ROM TOC (binary MSF format, 804 bytes max.) |
790 |
*/ |
791 |
|
792 |
bool SysCDReadTOC(void *arg, uint8 *toc) |
793 |
{ |
794 |
file_handle *fh = (file_handle *)arg; |
795 |
if (!fh || !fh->fh || !fh->is_cdrom) |
796 |
return false; |
797 |
|
798 |
DWORD dummy; |
799 |
return DeviceIoControl(fh->fh, |
800 |
IOCTL_CDROM_READ_TOC, |
801 |
NULL, 0, |
802 |
toc, min((int)sizeof(CDROM_TOC), 804), |
803 |
&dummy, |
804 |
NULL); |
805 |
} |
806 |
|
807 |
|
808 |
/* |
809 |
* Read CD-ROM position data (Sub-Q Channel, 16 bytes, see SCSI standard) |
810 |
*/ |
811 |
|
812 |
bool SysCDGetPosition(void *arg, uint8 *pos) |
813 |
{ |
814 |
file_handle *fh = (file_handle *)arg; |
815 |
if (!fh || !fh->fh || !fh->is_cdrom) |
816 |
return false; |
817 |
|
818 |
SUB_Q_CHANNEL_DATA q_data; |
819 |
|
820 |
CDROM_SUB_Q_DATA_FORMAT q_format; |
821 |
q_format.Format = IOCTL_CDROM_CURRENT_POSITION; |
822 |
q_format.Track = 0; // used only by ISRC reads |
823 |
|
824 |
DWORD dwBytesReturned = 0; |
825 |
bool ok = DeviceIoControl(fh->fh, |
826 |
IOCTL_CDROM_READ_Q_CHANNEL, |
827 |
&q_format, sizeof(CDROM_SUB_Q_DATA_FORMAT), |
828 |
&q_data, sizeof(SUB_Q_CHANNEL_DATA), |
829 |
&dwBytesReturned, |
830 |
NULL); |
831 |
if (ok) |
832 |
memcpy(pos, &q_data.CurrentPosition, sizeof(SUB_Q_CURRENT_POSITION)); |
833 |
|
834 |
return ok; |
835 |
} |
836 |
|
837 |
|
838 |
/* |
839 |
* Play CD audio |
840 |
*/ |
841 |
|
842 |
bool SysCDPlay(void *arg, uint8 start_m, uint8 start_s, uint8 start_f, uint8 end_m, uint8 end_s, uint8 end_f) |
843 |
{ |
844 |
file_handle *fh = (file_handle *)arg; |
845 |
if (!fh || !fh->fh || !fh->is_cdrom) |
846 |
return false; |
847 |
|
848 |
CDROM_PLAY_AUDIO_MSF msf; |
849 |
msf.StartingM = start_m; |
850 |
msf.StartingS = start_s; |
851 |
msf.StartingF = start_f; |
852 |
msf.EndingM = end_m; |
853 |
msf.EndingS = end_s; |
854 |
msf.EndingF = end_f; |
855 |
|
856 |
DWORD dwBytesReturned = 0; |
857 |
return DeviceIoControl(fh->fh, |
858 |
IOCTL_CDROM_PLAY_AUDIO_MSF, |
859 |
&msf, sizeof(CDROM_PLAY_AUDIO_MSF), |
860 |
NULL, 0, |
861 |
&dwBytesReturned, |
862 |
NULL); |
863 |
} |
864 |
|
865 |
|
866 |
/* |
867 |
* Pause CD audio |
868 |
*/ |
869 |
|
870 |
bool SysCDPause(void *arg) |
871 |
{ |
872 |
file_handle *fh = (file_handle *)arg; |
873 |
if (!fh || !fh->fh || !fh->is_cdrom) |
874 |
return false; |
875 |
|
876 |
DWORD dwBytesReturned = 0; |
877 |
return DeviceIoControl(fh->fh, |
878 |
IOCTL_CDROM_PAUSE_AUDIO, |
879 |
NULL, 0, |
880 |
NULL, 0, |
881 |
&dwBytesReturned, |
882 |
NULL); |
883 |
} |
884 |
|
885 |
|
886 |
/* |
887 |
* Resume paused CD audio |
888 |
*/ |
889 |
|
890 |
bool SysCDResume(void *arg) |
891 |
{ |
892 |
file_handle *fh = (file_handle *)arg; |
893 |
if (!fh || !fh->fh || !fh->is_cdrom) |
894 |
return false; |
895 |
|
896 |
DWORD dwBytesReturned = 0; |
897 |
return DeviceIoControl(fh->fh, |
898 |
IOCTL_CDROM_RESUME_AUDIO, |
899 |
NULL, 0, |
900 |
NULL, 0, |
901 |
&dwBytesReturned, NULL); |
902 |
} |
903 |
|
904 |
|
905 |
/* |
906 |
* Stop CD audio |
907 |
*/ |
908 |
|
909 |
bool SysCDStop(void *arg, uint8 lead_out_m, uint8 lead_out_s, uint8 lead_out_f) |
910 |
{ |
911 |
file_handle *fh = (file_handle *)arg; |
912 |
if (!fh || !fh->fh || !fh->is_cdrom) |
913 |
return false; |
914 |
|
915 |
DWORD dwBytesReturned = 0; |
916 |
return DeviceIoControl(fh->fh, |
917 |
IOCTL_CDROM_STOP_AUDIO, |
918 |
NULL, 0, |
919 |
NULL, 0, |
920 |
&dwBytesReturned, |
921 |
NULL); |
922 |
} |
923 |
|
924 |
|
925 |
/* |
926 |
* Perform CD audio fast-forward/fast-reverse operation starting from specified address |
927 |
*/ |
928 |
|
929 |
bool SysCDScan(void *arg, uint8 start_m, uint8 start_s, uint8 start_f, bool reverse) |
930 |
{ |
931 |
file_handle *fh = (file_handle *)arg; |
932 |
if (!fh || !fh->fh || !fh->is_cdrom) |
933 |
return false; |
934 |
|
935 |
CDROM_SEEK_AUDIO_MSF msf; |
936 |
msf.M = start_m; |
937 |
msf.S = start_s; |
938 |
msf.F = start_f; |
939 |
|
940 |
DWORD dwBytesReturned = 0; |
941 |
return DeviceIoControl(fh->fh, |
942 |
IOCTL_CDROM_SEEK_AUDIO_MSF, |
943 |
&msf, sizeof(CDROM_SEEK_AUDIO_MSF), |
944 |
NULL, 0, |
945 |
&dwBytesReturned, |
946 |
NULL); |
947 |
} |
948 |
|
949 |
|
950 |
/* |
951 |
* Set CD audio volume (0..255 each channel) |
952 |
*/ |
953 |
|
954 |
void SysCDSetVolume(void *arg, uint8 left, uint8 right) |
955 |
{ |
956 |
file_handle *fh = (file_handle *)arg; |
957 |
if (!fh || !fh->fh || !fh->is_cdrom) |
958 |
return; |
959 |
|
960 |
VOLUME_CONTROL vc; |
961 |
vc.PortVolume[0] = left; |
962 |
vc.PortVolume[1] = right; |
963 |
vc.PortVolume[2] = left; |
964 |
vc.PortVolume[3] = right; |
965 |
|
966 |
DWORD dwBytesReturned = 0; |
967 |
DeviceIoControl(fh->fh, |
968 |
IOCTL_CDROM_SET_VOLUME, |
969 |
&vc, sizeof(VOLUME_CONTROL), |
970 |
NULL, 0, |
971 |
&dwBytesReturned, |
972 |
NULL); |
973 |
} |
974 |
|
975 |
|
976 |
/* |
977 |
* Get CD audio volume (0..255 each channel) |
978 |
*/ |
979 |
|
980 |
void SysCDGetVolume(void *arg, uint8 &left, uint8 &right) |
981 |
{ |
982 |
file_handle *fh = (file_handle *)arg; |
983 |
if (!fh) |
984 |
return; |
985 |
|
986 |
left = right = 0; |
987 |
if (!fh->fh || !fh->is_cdrom) |
988 |
return; |
989 |
|
990 |
VOLUME_CONTROL vc; |
991 |
memset(&vc, 0, sizeof(vc)); |
992 |
|
993 |
DWORD dwBytesReturned = 0; |
994 |
if (DeviceIoControl(fh->fh, |
995 |
IOCTL_CDROM_GET_VOLUME, |
996 |
NULL, 0, |
997 |
&vc, sizeof(VOLUME_CONTROL), |
998 |
&dwBytesReturned, |
999 |
NULL)) |
1000 |
{ |
1001 |
left = vc.PortVolume[0]; |
1002 |
right = vc.PortVolume[1]; |
1003 |
} |
1004 |
} |