New API call burn_drive_snooze()

cdrskin/cdrskin_timestamp.h

@@ -1 +1 @@
-#define Cdrskin_timestamP "2009.08.23.130326"
+#define Cdrskin_timestamP "2009.08.24.131146"

libburn/drive.c

@@ -533,6 +533,20 @@ int burn_drive_release_fl(struct burn_drive *d, int flag)
 }
 
 
+/* API */
+/* ts A90824
+   @param flag bit0= wake up (else start snoozing)
+*/
+int burn_drive_snooze(struct burn_drive *d, int flag)
+{
+	if (flag & 1)
+		d->start_unit(d);
+	else
+		d->stop_unit(d);
+	return 1;
+}
+
+
 /* API */
 void burn_drive_release(struct burn_drive *d, int le)
 {

libburn/libburn.h

@@ -1029,6 +1029,22 @@ int burn_drive_obtain_scsi_adr(char *path, int *bus_no, int *host_no,
 int burn_drive_grab(struct burn_drive *drive, int load);
 
 
+/* ts A90824 */
+/** Calm down or alert a drive. Some drives stay alert after reading for
+    quite some time. This saves time with the startup for the next read
+    operation but also causes noise and consumes extra energy. It makes
+    sense to calm down the drive if no read operation is expected for the
+    next few seconds. The drive will get alert automatically if operations
+    are required.
+    @param drive  The drive to influence.
+    @param flag   Bitfield for control purposes
+                  bit0= become alert (else start snoozing)
+                        This is not mandatory to allow further drive operations
+    @since 0.7.0
+*/
+int burn_drive_snooze(struct burn_drive *d, int flag);
+
+
 /** Release a drive. This should not be done until the drive is no longer
     busy (see burn_drive_get_status).
     Linux: The drive device file is not reserved afterwards. (O_EXCL, F_SETLK).

libburn/sbc.c

@@ -21,6 +21,7 @@ int mmc_function_spy(struct burn_drive *d, char * text);
 static unsigned char SBC_LOAD[] = { 0x1b, 0, 0, 0, 3, 0 };
 static unsigned char SBC_UNLOAD[] = { 0x1b, 0, 0, 0, 2, 0 };
 static unsigned char SBC_START_UNIT[] = { 0x1b, 0, 0, 0, 1, 0 };
+static unsigned char SBC_STOP_UNIT[] = { 0x1b, 0, 0, 0, 0, 0 };
 
 void sbc_load(struct burn_drive *d)
 {
@@ -84,15 +85,8 @@ int sbc_start_unit(struct burn_drive *d)
 		return 0;
 
 	scsi_init_command(&c, SBC_START_UNIT, sizeof(SBC_START_UNIT));
-/*
-	memcpy(c.opcode, SBC_START_UNIT, sizeof(SBC_START_UNIT));
-	c.oplen = sizeof(SBC_START_UNIT);
-	c.page = NULL;
-*/
 	c.retry = 1;
-
 	c.opcode[1] |= 1; /* ts A70918 : Immed */
-
 	c.dir = NO_TRANSFER;
 	d->issue_command(d, &c);
 	if (c.error)
@@ -101,6 +95,25 @@ int sbc_start_unit(struct burn_drive *d)
 	return spc_wait_unit_attention(d, 1800, "START UNIT", 0);
 }
 
+/* ts A90824 : Trying to reduce drive noise */
+int sbc_stop_unit(struct burn_drive *d)
+{
+	struct command c;
+
+	if (mmc_function_spy(d, "stop_unit") <= 0)
+		return 0;
+
+	scsi_init_command(&c, SBC_STOP_UNIT, sizeof(SBC_STOP_UNIT));
+	c.retry = 1;
+	c.opcode[1] |= 1; /* Immed */
+	c.dir = NO_TRANSFER;
+	d->issue_command(d, &c);
+	if (c.error)
+		return 0;
+	return spc_wait_unit_attention(d, 1800, "STOP UNIT", 0);
+}
+
+
 
 /* ts A61021 : the sbc specific part of sg.c:enumerate_common()
 */
@@ -109,6 +122,7 @@ int sbc_setup_drive(struct burn_drive *d)
 	d->eject = sbc_eject;
 	d->load = sbc_load;
 	d->start_unit = sbc_start_unit;
+	d->stop_unit = sbc_stop_unit;
 	return 1;
 }
 

libburn/transport.h

@@ -317,6 +317,7 @@ struct burn_drive
 	void (*eject) (struct burn_drive *);
 	void (*load) (struct burn_drive *);
 	int (*start_unit) (struct burn_drive *);
+	int (*stop_unit) (struct burn_drive *);
 	void (*read_disc_info) (struct burn_drive *);
 	void (*read_sectors) (struct burn_drive *,
 			      int start,