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Allow returned parameters to be NULL.

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rocky
2005-03-14 02:02:49 +00:00
parent 02ce555171
commit 0507f61921
4 changed files with 27 additions and 14 deletions
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6
include/cdio/audio.h
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@@ -1,5 +1,5 @@
/* -*- c -*-
$Id: audio.h,v 1.7 2005/03/06 15:59:20 rocky Exp $
$Id: audio.h,v 1.8 2005/03/14 02:02:49 rocky Exp $
Copyright (C) 2005 Rocky Bernstein <rocky@panix.com>
@@ -66,6 +66,10 @@ extern "C" {
Get volume of an audio CD.
@param p_cdio the CD object to be acted upon.
@param p_volume place to put the list of volume outputs levels
p_volume can be NULL in which case we return only whether the driver
has the ability to get the volume or not.
*/
driver_return_code_t cdio_audio_get_volume (CdIo_t *p_cdio, /*out*/

12
include/cdio/device.h
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@@ -1,5 +1,5 @@
/* -*- c -*-
$Id: device.h,v 1.21 2005/03/07 07:23:52 rocky Exp $
$Id: device.h,v 1.22 2005/03/14 02:02:49 rocky Exp $
Copyright (C) 2005 Rocky Bernstein <rocky@panix.com>
@@ -220,11 +220,11 @@ extern "C" {
/*!
Close media tray in CD drive if there is a routine to do so.
@param name of CD-ROM device to be acted upon.
driver_id is the driver to use to perform the action. If DRIVER_UNKNOWN
or DRIVER_DEVICE we'll scan for a suitable driver and set
driver_id to that on return.
@param psz_drive the name of CD-ROM to be closed.
@param p_driver_id is the driver to be used or that got used if
it was DRIVER_UNKNOWN or DRIVER_DEVICE; If this is NULL, we won't
report back the driver used.
*/
driver_return_code_t cdio_close_tray (const char *psz_device,
/*in/out*/ driver_id_t *p_driver_id);