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Add better DeviceIocontrol support. It still sucks, but sucks less.

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rocky
2004-02-04 10:23:01 +00:00
parent 8d24568ada
commit 8426256abb
4 changed files with 300 additions and 118 deletions
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204
lib/win32ioctl.c Normal file
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/*
$Id: win32ioctl.c,v 1.1 2004/02/04 10:23:01 rocky Exp $
Copyright (C) 2004 Rocky Bernstein <rocky@panix.com>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* This file contains Win32-specific code using the DeviceIoControl
access method.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
static const char _rcsid[] = "$Id: win32ioctl.c,v 1.1 2004/02/04 10:23:01 rocky Exp $";
#include <cdio/cdio.h>
#include <cdio/sector.h>
#include "cdio_assert.h"
#ifdef HAVE_WIN32_CDROM
#include <windows.h>
#include <winioctl.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/types.h>
#ifndef IOCTL_CDROM_BASE
# define IOCTL_CDROM_BASE FILE_DEVICE_CD_ROM
#endif
#ifndef IOCTL_CDROM_RAW_READ
#define IOCTL_CDROM_RAW_READ CTL_CODE(IOCTL_CDROM_BASE, 0x000F, \
METHOD_OUT_DIRECT, FILE_READ_ACCESS)
#endif
typedef enum _TRACK_MODE_TYPE {
YellowMode2,
XAForm2,
CDDA
} TRACK_MODE_TYPE, *PTRACK_MODE_TYPE;
typedef struct __RAW_READ_INFO {
LARGE_INTEGER DiskOffset;
ULONG SectorCount;
TRACK_MODE_TYPE TrackMode;
} RAW_READ_INFO, *PRAW_READ_INFO;
#include "_cdio_win32.h"
const char *
win32ioctl_is_cdrom(const char drive_letter)
{
static char psz_win32_drive[7];
static char root_path_name[8];
_img_private_t env;
/* Initializations */
env.h_device_handle = NULL;
env.i_sid = 0;
env.hASPI = 0;
env.lpSendCommand = 0;
sprintf( psz_win32_drive, "\\\\.\\%c:", drive_letter );
sprintf( root_path_name, "\\\\.\\%c:\\", drive_letter );
env.h_device_handle = CreateFile( psz_win32_drive, GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING,
FILE_FLAG_NO_BUFFERING |
FILE_FLAG_RANDOM_ACCESS, NULL );
if (env.h_device_handle != NULL
&& (DRIVE_CDROM == GetDriveType(root_path_name))) {
CloseHandle(env.h_device_handle);
return strdup(psz_win32_drive);
} else {
CloseHandle(env.h_device_handle);
return NULL;
}
}
/*!
Reads an audio device using the DeviceIoControl method into data
starting from lsn. Returns 0 if no error.
*/
int
win32ioctl_read_audio_sectors (_img_private_t *env, void *data, lsn_t lsn,
unsigned int nblocks)
{
DWORD dwBytesReturned;
RAW_READ_INFO cdrom_raw;
/* Initialize CDROM_RAW_READ structure */
cdrom_raw.DiskOffset.QuadPart = CDIO_CD_FRAMESIZE_RAW * lsn;
cdrom_raw.SectorCount = nblocks;
cdrom_raw.TrackMode = CDDA;
if( DeviceIoControl( env->h_device_handle,
IOCTL_CDROM_RAW_READ, &cdrom_raw,
sizeof(RAW_READ_INFO), data,
CDIO_CD_FRAMESIZE_RAW * nblocks,
&dwBytesReturned, NULL ) == 0 ) {
cdio_info("Error reading audio-mode %lu (%ld)\n", lsn, GetLastError());
return 1;
}
return 0;
}
/*!
Reads a single mode2 sector using the DeviceIoControl method into
data starting from lsn. Returns 0 if no error.
*/
int
win32ioctl_read_mode2_sector (_img_private_t *env, void *data, lsn_t lsn,
bool mode2_form2)
{
char buf[CDIO_CD_FRAMESIZE_RAW] = { 0, };
DWORD dwBytesReturned;
RAW_READ_INFO cdrom_raw;
/* Initialize CDROM_RAW_READ structure */
cdrom_raw.DiskOffset.QuadPart = CDIO_CD_FRAMESIZE * lsn;
cdrom_raw.SectorCount = 1;
cdrom_raw.TrackMode = mode2_form2 ? XAForm2 : YellowMode2;
if( DeviceIoControl( env->h_device_handle,
IOCTL_CDROM_RAW_READ, &cdrom_raw,
sizeof(RAW_READ_INFO), buf,
sizeof(buf), &dwBytesReturned, NULL )
== 0 ) {
/* Retry in Yellowmode2 */
if (mode2_form2) {
cdio_debug("Retrying mode2 request as mode1");
cdrom_raw.TrackMode = YellowMode2;
} else {
cdio_debug("Retrying mode1 request as mode2");
cdrom_raw.TrackMode = XAForm2;
}
if( DeviceIoControl( env->h_device_handle,
IOCTL_CDROM_RAW_READ, &cdrom_raw,
sizeof(RAW_READ_INFO), buf,
sizeof(buf), &dwBytesReturned, NULL )
== 0 ) {
cdio_debug("Last-ditch effort reading as CDDA");
cdrom_raw.TrackMode = CDDA;
if( DeviceIoControl( env->h_device_handle,
IOCTL_CDROM_RAW_READ, &cdrom_raw,
sizeof(RAW_READ_INFO), buf,
sizeof(buf), &dwBytesReturned, NULL )
== 0 ) {
cdio_info("Error reading %lu (%ld)\n", lsn, GetLastError());
return 1;
}
}
}
if (mode2_form2)
memcpy (data, buf, M2RAW_SECTOR_SIZE);
else
memcpy (((char *)data), buf + CDIO_CD_SUBHEADER_SIZE, CDIO_CD_FRAMESIZE);
return 0;
}
/*!
Initialize internal structures for CD device.
*/
bool
win32ioctl_init_win32 (_img_private_t *env)
{
char psz_win32_drive[7];
unsigned int len=strlen(env->gen.source_name);
cdio_debug("using winNT/2K/XP ioctl layer");
if (cdio_is_device_win32(env->gen.source_name)) {
sprintf( psz_win32_drive, "\\\\.\\%c:", env->gen.source_name[len-2] );
env->h_device_handle = CreateFile( psz_win32_drive, GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING,
FILE_FLAG_NO_BUFFERING |
FILE_FLAG_RANDOM_ACCESS, NULL );
return (env->h_device_handle == NULL) ? false : true;
}
return false;
}
#endif /*HAVE_WIN32_CDROM*/