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/* --------------------------------------------------------------------------
MusicBrainz -- The Internet music metadatabase
Copyright (C) 2007-2008 Lukas Lalinsky
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 of the License, or (at your option) any later version.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
----------------------------------------------------------------------------*/
#ifdef _MSC_VER
#define _CRT_SECURE_NO_WARNINGS
#if (_MSC_VER < 1900)
#define snprintf _snprintf
#endif
#endif
#include <windows.h>
#include <string.h>
#include <stdio.h>
#if defined(__CYGWIN__)
#include <ntddcdrm.h>
#elif defined(__MINGW32__)
#include <ddk/ntddcdrm.h>
#else
#include "ntddcdrm.h"
#endif
#include "discid/discid.h"
#include "discid/discid_private.h"
#define MB_DEFAULT_DEVICE "D:"
#define MAX_DEV_LEN 3
#if defined(_MSC_VER)
# define THREAD_LOCAL __declspec(thread)
#elif (defined(__GNUC__) && (__GNUC__ >= 4)) || defined(__clang__)
# define THREAD_LOCAL __thread
#else
# define THREAD_LOCAL
#endif
static THREAD_LOCAL char default_device[MAX_DEV_LEN] = "\0";
static int address_to_sectors(UCHAR address[4]) {
return address[1] * 4500 + address[2] * 75 + address[3];
}
static HANDLE create_device_handle(mb_disc_private *disc, const char *device) {
HANDLE hDevice;
char filename[128];
const char* colon;
size_t len;
strcpy(filename, "\\\\.\\");
len = strlen(device);
colon = strchr(device, ':');
if (colon) {
len = colon - device + 1;
}
strncat(filename, device, len > 120 ? 120 : len);
hDevice = CreateFile(filename, GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, NULL);
if (hDevice == INVALID_HANDLE_VALUE) {
snprintf(disc->error_msg, MB_ERROR_MSG_LENGTH,
"cannot open the CD audio device '%s'", device);
return 0;
}
return hDevice;
}
static void read_disc_mcn(HANDLE hDevice, mb_disc_private *disc) {
DWORD dwReturned;
BOOL bResult;
CDROM_SUB_Q_DATA_FORMAT format;
SUB_Q_CHANNEL_DATA data;
format.Track = 0;
format.Format = IOCTL_CDROM_MEDIA_CATALOG;
bResult = DeviceIoControl(hDevice, IOCTL_CDROM_READ_Q_CHANNEL,
&format, sizeof(format),
&data, sizeof(data),
&dwReturned, NULL);
if (bResult == FALSE) {
fprintf(stderr, "Warning: Unable to read the disc's media catalog number.\n");
} else {
strncpy(disc->mcn, (char *) data.MediaCatalog.MediaCatalog,
MCN_STR_LENGTH);
}
}
static void read_disc_isrc(HANDLE hDevice, mb_disc_private *disc, int track) {
DWORD dwReturned;
BOOL bResult;
CDROM_SUB_Q_DATA_FORMAT format;
SUB_Q_CHANNEL_DATA data;
format.Track = track;
format.Format = IOCTL_CDROM_TRACK_ISRC;
bResult = DeviceIoControl(hDevice, IOCTL_CDROM_READ_Q_CHANNEL,
&format, sizeof(format),
&data, sizeof(data),
&dwReturned, NULL);
if (bResult == FALSE) {
fprintf(stderr, "Warning: Unable to read the international standard recording code (ISRC) for track %i\n", track);
} else {
strncpy(disc->isrc[track], (char *) data.TrackIsrc.TrackIsrc,
ISRC_STR_LENGTH);
}
}
static int get_nth_device(int number, char* device, int device_length) {
int i, counter = 0;
char tmpDevice[MAX_DEV_LEN];
DWORD mask = GetLogicalDrives();
for (i = 0; i <= 25; i++) {
if (mask >> i & 1) {
snprintf(tmpDevice, MAX_DEV_LEN, "%c:", i + 'A');
if (GetDriveType(tmpDevice) == DRIVE_CDROM) {
counter++;
if (counter == number) {
strncpy(device, tmpDevice, device_length);
return TRUE;
}
}
}
}
return FALSE;
}
char *mb_disc_get_default_device_unportable(void) {
if (!get_nth_device(1, default_device, MAX_DEV_LEN)) {
return MB_DEFAULT_DEVICE;
}
return default_device;
}
int mb_disc_has_feature_unportable(enum discid_feature feature) {
switch(feature) {
case DISCID_FEATURE_READ:
case DISCID_FEATURE_MCN:
case DISCID_FEATURE_ISRC:
return 1;
default:
return 0;
}
}
static int mb_disc_winnt_read_toc(HANDLE device, mb_disc_private *disc, mb_disc_toc *toc) {
DWORD dwReturned;
BOOL bResult;
CDROM_TOC cd;
int i;
bResult = DeviceIoControl(device, IOCTL_CDROM_READ_TOC,
NULL, 0,
&cd, sizeof(cd),
&dwReturned, NULL);
if (bResult == FALSE) {
snprintf(disc->error_msg, MB_ERROR_MSG_LENGTH,
"error while reading the CD TOC");
return 0;
}
toc->first_track_num = cd.FirstTrack;
toc->last_track_num = cd.LastTrack;
/* Get info about all tracks */
for (i = toc->first_track_num; i <= toc->last_track_num; i++) {
toc->tracks[i].address = address_to_sectors(cd.TrackData[i - 1].Address) - 150;
toc->tracks[i].control = cd.TrackData[i - 1].Control;
}
/* Lead-out is stored after the last track */
toc->tracks[0].address = address_to_sectors(cd.TrackData[toc->last_track_num].Address) - 150;
toc->tracks[0].control = cd.TrackData[toc->last_track_num].Control;
return 1;
}
int mb_disc_read_unportable(mb_disc_private *disc, const char *device,
unsigned int features) {
mb_disc_toc toc;
char tmpDevice[MAX_DEV_LEN];
HANDLE hDevice;
int i, device_number;
device_number = (int) strtol(device, NULL, 10);
if (device_number > 0) {
if (!get_nth_device(device_number, tmpDevice, MAX_DEV_LEN)) {
snprintf(disc->error_msg, MB_ERROR_MSG_LENGTH,
"cannot find the CD audio device '%i'", device_number);
return 0;
}
device = tmpDevice;
}
hDevice = create_device_handle(disc, device);
if (hDevice == 0)
return 0;
if (!mb_disc_winnt_read_toc(hDevice, disc, &toc)) {
CloseHandle(hDevice);
return 0;
}
if (!mb_disc_load_toc(disc, &toc)) {
CloseHandle(hDevice);
return 0;
}
if (features & DISCID_FEATURE_MCN) {
read_disc_mcn(hDevice, disc);
}
for (i = disc->first_track_num; i <= disc->last_track_num; i++) {
if (features & DISCID_FEATURE_ISRC) {
read_disc_isrc(hDevice, disc, i);
}
}
CloseHandle(hDevice);
return 1;
}
/* EOF */
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