Attempt SCSI-MMC speed setting (e.g. for M$).

include/cdio/scsi_mmc.h

@@ -1,5 +1,5 @@
 /*
-    $Id: scsi_mmc.h,v 1.38 2005/01/18 00:57:20 rocky Exp $
+    $Id: scsi_mmc.h,v 1.39 2005/01/18 05:41:58 rocky Exp $
 
     Copyright (C) 2003, 2004, 2005 Rocky Bernstein <rocky@panix.com>
 
@@ -436,4 +436,16 @@ int scsi_mmc_set_blocksize ( const CdIo_t *p_cdio, unsigned int i_bsize);
  */
 int scsi_mmc_get_blocksize ( const CdIo_t *p_cdio );
 
+/*!
+  Set the drive speed. 
+  
+  @return -1 if we had an error. is -2 returned if this is not
+  implemented for the current driver.
+  
+  @see scsi_mmc_get_speed
+*/
+int
+scsi_mmc_set_speed( const CdIo_t *p_cdio, int i_speed );
+
+
 #endif /* __SCSI_MMC_H__ */

lib/driver/MSWindows/win32.c

@@ -1,5 +1,5 @@
 /*
-    $Id: win32.c,v 1.5 2005/01/17 17:20:09 rocky Exp $
+    $Id: win32.c,v 1.6 2005/01/18 05:41:58 rocky Exp $
 
     Copyright (C) 2003, 2004, 2005 Rocky Bernstein <rocky@panix.com>
 
@@ -26,7 +26,7 @@
 # include "config.h"
 #endif
 
-static const char _rcsid[] = "$Id: win32.c,v 1.5 2005/01/17 17:20:09 rocky Exp $";
+static const char _rcsid[] = "$Id: win32.c,v 1.6 2005/01/18 05:41:58 rocky Exp $";
 
 #include <cdio/cdio.h>
 #include <cdio/sector.h>
@@ -494,6 +494,20 @@ _get_arg_win32 (void *user_data, const char key[])
   return NULL;
 }
 
+static int
+set_speed_win32 (void *p_user_data, int i_speed) {
+  const _img_private_t *p_env = p_user_data;
+  if (!p_env) return -1;
+  return scsi_mmc_set_speed( p_env->gen.cdio, i_speed );
+}
+
+static int
+set_blocksize_win32 (void *p_user_data, int i_blocksize) {
+  const _img_private_t *p_env = p_user_data;
+  if (!p_env) return -1;
+  return scsi_mmc_set_blocksize( p_env->gen.cdio, i_blocksize );
+}
+
 /*!
   Return the media catalog number MCN.
 
@@ -759,6 +773,8 @@ cdio_open_am_win32 (const char *psz_orig_source, const char *psz_access_mode)
   _funcs.read_toc              = &read_toc_win32;
   _funcs.run_scsi_mmc_cmd      = &run_scsi_cmd_win32;
   _funcs.set_arg               = set_arg_win32;
+  _funcs.set_blocksize         = set_blocksize_win32;
+  _funcs.set_speed             = set_speed_win32;
   _funcs.stat_size             = stat_size_win32;
 
   _data                 = _cdio_malloc (sizeof (_img_private_t));

lib/driver/scsi_mmc.c

@@ -1,6 +1,6 @@
 /*  Common SCSI Multimedia Command (MMC) routines.
 
-    $Id: scsi_mmc.c,v 1.4 2005/01/18 00:57:20 rocky Exp $
+    $Id: scsi_mmc.c,v 1.5 2005/01/18 05:41:58 rocky Exp $
 
     Copyright (C) 2004 Rocky Bernstein <rocky@panix.com>
 
@@ -77,6 +77,37 @@ scsi_mmc_get_discmode( const CdIo_t *p_cdio )
   return CDIO_DISC_MODE_NO_INFO;
 }
 
+/*!
+  Set the drive speed. 
+  
+  @return the drive speed if greater than 0. -1 if we had an error. is -2
+  returned if this is not implemented for the current driver.
+  
+  @see scsi_mmc_set_speed
+*/
+int
+scsi_mmc_set_speed( const CdIo_t *p_cdio, int i_speed )
+
+{
+  uint8_t buf[14] = { 0, };
+  scsi_mmc_cdb_t cdb;
+
+  /* If the requested speed is less than 1x 176 kb/s this command
+     will return an error - it's part of the ATAPI specs. Therefore, 
+     test and stop early. */
+
+  if ( i_speed < 1 ) return -1;
+  
+  memset(&cdb, 0, sizeof(scsi_mmc_cdb_t));
+  CDIO_MMC_SET_COMMAND(cdb.field, CDIO_MMC_GPCMD_SET_SPEED);
+  CDIO_MMC_SET_LEN16(cdb.field, 2, i_speed);
+  /* Some drives like the Creative 24x CDRW require one to set a nonzero
+     write speed. So we set to the maximum value. */
+  CDIO_MMC_SET_LEN16(cdb.field, 4, 0xffff);
+  return scsi_mmc_run_cmd(p_cdio, 2000, &cdb, SCSI_MMC_DATA_READ, 
+			  sizeof(buf), buf);
+}
+
 /*!
   On input a MODE_SENSE command was issued and we have the results
   in p. We interpret this and return a bit mask set according to the