win32_ioctl.c

linux下的MPEG1

  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 ) {
    char *psz_msg = NULL;
    long int i_err = GetLastError();
    FORMAT_ERROR(i_err, psz_msg);
    cdio_info("Error reading audio-mode %lu\n%s)", 
	      (long unsigned int) lsn, psz_msg);
    LocalFree(psz_msg);
    return 1;
  }
  return 0;
}

/*!
   Reads a single raw sector using the DeviceIoControl method into
   data starting from lsn. Returns 0 if no error.
 */
static int
read_raw_sector (const _img_private_t *p_env, void *p_buf, lsn_t lsn) 
{
  scsi_mmc_cdb_t cdb = {{0, }};

  /* ReadCD CDB12 command.  The values were taken from MMC1 draft paper. */
  CDIO_MMC_SET_COMMAND      (cdb.field, CDIO_MMC_GPCMD_READ_CD);
  CDIO_MMC_SET_READ_LBA     (cdb.field, lsn);
  CDIO_MMC_SET_READ_LENGTH24(cdb.field, 1);

  cdb.field[9]=0xF8;  /* Raw read, 2352 bytes per sector */
  
  return run_scsi_cmd_win32ioctl(p_env, OP_TIMEOUT_MS,
				     scsi_mmc_get_cmd_len(cdb.field[0]), 
				     &cdb, SCSI_MMC_DATA_READ, 
				     CDIO_CD_FRAMESIZE_RAW, p_buf);
}

/*!
   Reads a single mode2 sector using the DeviceIoControl method into
   data starting from lsn. Returns 0 if no error.
 */
int
read_mode2_sector_win32ioctl (const _img_private_t *p_env, void *p_data, 
			      lsn_t lsn, bool b_form2)
{
  char buf[CDIO_CD_FRAMESIZE_RAW] = { 0, };
  int ret = read_raw_sector (p_env, buf, lsn);

  if ( 0 != ret) return ret;

  memcpy (p_data,
	  buf + CDIO_CD_SYNC_SIZE + CDIO_CD_XA_HEADER,
	  b_form2 ? M2RAW_SECTOR_SIZE: CDIO_CD_FRAMESIZE);
  
  return 0;

}

/*!
   Reads a single mode2 sector using the DeviceIoControl method into
   data starting from lsn. Returns 0 if no error.
 */
int
read_mode1_sector_win32ioctl (const _img_private_t *env, void *data, 
			      lsn_t lsn, bool b_form2)
{
  char buf[CDIO_CD_FRAMESIZE_RAW] = { 0, };
  int ret = read_raw_sector (env, buf, lsn);

  if ( 0 != ret) return ret;

  memcpy (data, 
	  buf + CDIO_CD_SYNC_SIZE+CDIO_CD_HEADER_SIZE,
	  b_form2 ? M2RAW_SECTOR_SIZE: CDIO_CD_FRAMESIZE);  

  return 0;

}

/*!
  Initialize internal structures for CD device.
 */
bool
init_win32ioctl (_img_private_t *env)
{
#ifdef WIN32
  OSVERSIONINFO ov;
#endif

#ifdef _XBOX
  ANSI_STRING filename;
  OBJECT_ATTRIBUTES attributes;
  IO_STATUS_BLOCK status;
  HANDLE hDevice;
  NTSTATUS error;
#else
  unsigned int len=strlen(env->gen.source_name);
  char psz_win32_drive[7];
  DWORD dw_access_flags;
#endif
  
  cdio_debug("using winNT/2K/XP ioctl layer");

#ifdef WIN32
  memset(&ov,0,sizeof(OSVERSIONINFO));
  ov.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
  GetVersionEx(&ov);
  
  if((ov.dwPlatformId==VER_PLATFORM_WIN32_NT) &&        
     (ov.dwMajorVersion>4))
    dw_access_flags = GENERIC_READ|GENERIC_WRITE;  /* add gen write on W2k/XP */
  else dw_access_flags = GENERIC_READ;
#endif

  if (cdio_is_device_win32(env->gen.source_name)) 
  {
#ifdef _XBOX
    //	Use XBOX cdrom, no matter what drive letter is given.
    RtlInitAnsiString(&filename,"\\Device\\Cdrom0");
    InitializeObjectAttributes(&attributes, &filename, OBJ_CASE_INSENSITIVE,
			       NULL);
    error = NtCreateFile( &hDevice, 
			  GENERIC_READ |SYNCHRONIZE | FILE_READ_ATTRIBUTES, 
			  &attributes, 
			  &status, 
			  NULL, 
			  0,
			  FILE_SHARE_READ,
			  FILE_OPEN,	
			  FILE_NON_DIRECTORY_FILE 
			  | FILE_SYNCHRONOUS_IO_NONALERT );
    
    if (!NT_SUCCESS(error))
    {
	  return false;
    }
	env->h_device_handle = hDevice;
#else
    sprintf( psz_win32_drive, "\\\\.\\%c:", env->gen.source_name[len-2] );

    env->h_device_handle = CreateFile( psz_win32_drive, 
				       dw_access_flags,
				       FILE_SHARE_READ | FILE_SHARE_WRITE, 
				       NULL, 
				       OPEN_EXISTING,
				       FILE_ATTRIBUTE_NORMAL, 
				       NULL );

    if( env->h_device_handle == INVALID_HANDLE_VALUE )
    {
	  /* No good. try toggle write. */
	  dw_access_flags ^= GENERIC_WRITE;  
	  env->h_device_handle = CreateFile( psz_win32_drive, 
					     dw_access_flags, 
					     FILE_SHARE_READ,  
					     NULL, 
					     OPEN_EXISTING, 
					     FILE_ATTRIBUTE_NORMAL, 
					     NULL );
	  if (env->h_device_handle == NULL)
		return false;
    }
#endif
    env->b_ioctl_init = true;
    return true;
  }
  return false;
}

/*!  
  Read and cache the CD's Track Table of Contents and track info.
  via a SCSI MMC READ_TOC (FULTOC).  Return true if successful or
  false if an error.
*/
static bool
read_fulltoc_win32mmc (_img_private_t *p_env) 
{
  scsi_mmc_cdb_t  cdb = {{0, }};
  CDROM_TOC_FULL  cdrom_toc_full;
  int             i_status, i, i_track_format, i_seen_flag;

  /* Operation code */
  CDIO_MMC_SET_COMMAND(cdb.field, CDIO_MMC_GPCMD_READ_TOC);

  cdb.field[1] = 0x00;

  /* Format */
  cdb.field[2] = CDIO_MMC_READTOC_FMT_FULTOC;

  memset(&cdrom_toc_full, 0, sizeof(cdrom_toc_full));

  /* Setup to read header, to get length of data */
  CDIO_MMC_SET_READ_LENGTH16(cdb.field, sizeof(cdrom_toc_full));

  i_status = run_scsi_cmd_win32ioctl (p_env, 1000*60*3,
				scsi_mmc_get_cmd_len(cdb.field[0]), 
				&cdb, SCSI_MMC_DATA_READ, 
				sizeof(cdrom_toc_full), &cdrom_toc_full);

  if ( 0 != i_status ) {
    cdio_debug ("SCSI MMC READ_TOC failed\n");  
    return false;
  } 
    
  i_seen_flag=0;
  for( i = 0 ; i <= CDIO_CD_MAX_TRACKS+3; i++ ) {
    
    if ( 0xA0 == cdrom_toc_full.TrackData[i].POINT ) { 
      /* First track number */
      p_env->gen.i_first_track = cdrom_toc_full.TrackData[i].PMIN;
      i_track_format = cdrom_toc_full.TrackData[i].PSEC;
      i_seen_flag|=0x01;
    }
    
    if ( 0xA1 == cdrom_toc_full.TrackData[i].POINT ) { 
      /* Last track number */
      p_env->gen.i_tracks = 
	cdrom_toc_full.TrackData[i].PMIN - p_env->gen.i_first_track + 1;
      i_seen_flag|=0x02;
    }
    
    if ( 0xA2 == cdrom_toc_full.TrackData[i].POINT ) { 
      /* Start position of the lead out */
      p_env->tocent[ p_env->gen.i_tracks ].start_lsn = 
	cdio_msf3_to_lba(
			 cdrom_toc_full.TrackData[i].PMIN,
			 cdrom_toc_full.TrackData[i].PSEC,
			 cdrom_toc_full.TrackData[i].PFRAME );
      p_env->tocent[ p_env->gen.i_tracks ].Control 
	= cdrom_toc_full.TrackData[i].Control;
      p_env->tocent[ p_env->gen.i_tracks ].Format  = i_track_format;
      i_seen_flag|=0x04;
    }
    
    if (cdrom_toc_full.TrackData[i].POINT > 0 
	&& cdrom_toc_full.TrackData[i].POINT <= p_env->gen.i_tracks) {
      p_env->tocent[ cdrom_toc_full.TrackData[i].POINT - 1 ].start_lsn = 
	cdio_msf3_to_lba(
			 cdrom_toc_full.TrackData[i].PMIN,
			 cdrom_toc_full.TrackData[i].PSEC,
			 cdrom_toc_full.TrackData[i].PFRAME );
      p_env->tocent[ cdrom_toc_full.TrackData[i].POINT - 1 ].Control = 
	cdrom_toc_full.TrackData[i].Control;
      p_env->tocent[ cdrom_toc_full.TrackData[i].POINT - 1 ].Format  = 
	i_track_format;
      
      cdio_debug("p_sectors: %i, %lu", i, 
		 (unsigned long int) (p_env->tocent[i].start_lsn));
      
      if (cdrom_toc_full.TrackData[i].POINT == p_env->gen.i_tracks)
	i_seen_flag|=0x08;
    }
    
    if ( 0x0F == i_seen_flag ) break;
  }
  if ( 0x0F == i_seen_flag ) {
    p_env->gen.toc_init = true; 
    return true;
  }
  return false;
}

/*! 
  Read and cache the CD's Track Table of Contents and track info.
  Return true if successful or false if an error.
*/
bool
read_toc_win32ioctl (_img_private_t *p_env) 
{
  CDROM_TOC    cdrom_toc;
  DWORD        dwBytesReturned;
  unsigned int i;

  if ( ! p_env ) return false;

  if ( read_fulltoc_win32mmc(p_env) ) return true;

  /* SCSI-MMC READ_TOC (FULTOC) read failed.  Try reading TOC via
     DeviceIoControl instead */
  if( DeviceIoControl( p_env->h_device_handle,
		       IOCTL_CDROM_READ_TOC,
		       NULL, 0, &cdrom_toc, sizeof(CDROM_TOC),
		       &dwBytesReturned, NULL ) == 0 ) {
    char *psz_msg = NULL;
    long int i_err = GetLastError();
    FORMAT_ERROR(i_err, psz_msg);
    if (psz_msg) {
      cdio_warn("could not read TOC (%ld): %s", i_err, psz_msg);
      LocalFree(psz_msg);
    } else 
      cdio_warn("could not read TOC (%ld)", i_err);
    return false;
  }
  
  p_env->gen.i_first_track = cdrom_toc.FirstTrack;
  p_env->gen.i_tracks  = cdrom_toc.LastTrack - cdrom_toc.FirstTrack + 1;
  
  for( i = 0 ; i <= p_env->gen.i_tracks ; i++ ) {
    p_env->tocent[ i ].start_lsn = 
      cdio_msf3_to_lba( cdrom_toc.TrackData[i].Address[1],
			cdrom_toc.TrackData[i].Address[2],
			cdrom_toc.TrackData[i].Address[3] );
    p_env->tocent[ i ].Control   = cdrom_toc.TrackData[i].Control;
    p_env->tocent[ i ].Format    = cdrom_toc.TrackData[i].Format;
    cdio_debug("p_sectors: %i, %lu", i, 
	       (unsigned long int) (p_env->tocent[i].start_lsn));
  }
  p_env->gen.toc_init = true;
  return true;
}

/*!
  Return the media catalog number MCN.

  Note: string is malloc'd so caller should free() then returned
  string when done with it.

 */
char *
get_mcn_win32ioctl (const _img_private_t *env) {

  DWORD dwBytesReturned;
  SUB_Q_MEDIA_CATALOG_NUMBER mcn;
  CDROM_SUB_Q_DATA_FORMAT q_data_format;
  
  memset( &mcn, 0, sizeof(mcn) );
  
  q_data_format.Format = CDIO_SUBCHANNEL_MEDIA_CATALOG;

  q_data_format.Track=1;
  
  if( DeviceIoControl( env->h_device_handle,
		       IOCTL_CDROM_READ_Q_CHANNEL,
		       &q_data_format, sizeof(q_data_format), 
		       &mcn, sizeof(mcn),
		       &dwBytesReturned, NULL ) == 0 ) {
    cdio_warn( "could not read Q Channel at track %d", 1);
  } else if (mcn.Mcval) 
    return strdup(mcn.MediaCatalog);
  return NULL;
}

/*!  
  Get the format (XA, DATA, AUDIO) of a track. 
*/
track_format_t
get_track_format_win32ioctl(const _img_private_t *env, track_t i_track) 
{
  /* This is pretty much copied from the "badly broken" cdrom_count_tracks
     in linux/cdrom.c.
  */

  if (env->tocent[i_track - env->gen.i_first_track].Control & 0x04) {
    if (env->tocent[i_track - env->gen.i_first_track].Format == 0x10)
      return TRACK_FORMAT_CDI;
    else if (env->tocent[i_track - env->gen.i_first_track].Format == 0x20) 
      return TRACK_FORMAT_XA;
    else
      return TRACK_FORMAT_DATA;
  } else
    return TRACK_FORMAT_AUDIO;
}

#endif /*HAVE_WIN32_CDROM*/