From f692c47b43e8dafbc36937c55193f3a85ab6eac8 Mon Sep 17 00:00:00 2001
From: rocky <rocky>
Date: Tue, 1 Mar 2005 00:49:24 +0000
Subject: [PATCH] Audio (via line output) related routines.

---
 lib/driver/audio.c | 150 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 150 insertions(+)
 create mode 100644 lib/driver/audio.c

diff --git a/lib/driver/audio.c b/lib/driver/audio.c
new file mode 100644
index 00000000..493ff948
--- /dev/null
+++ b/lib/driver/audio.c
@@ -0,0 +1,150 @@
+/*
+    $Id: audio.c,v 1.1 2005/03/01 00:49:24 rocky Exp $
+
+    Copyright (C) 2005 Rocky Bernstein <rocky@panix.com>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+/*! Audio (via line output) related routines. */
+
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <cdio/cdio.h>
+#include <cdio/audio.h>
+#include "cdio_private.h"
+
+/*!
+  Get volume of an audio CD.
+  
+  @param p_cdio the CD object to be acted upon.
+  
+*/
+driver_return_code_t 
+cdio_audio_get_volume (CdIo_t *p_cdio,  /*out*/ cdio_audio_volume_t *p_volume)
+{
+  if (!p_cdio) return DRIVER_OP_UNINIT;
+
+  if (!p_cdio->op.audio_get_volume) {
+    return p_cdio->op.audio_get_volume (p_cdio->env, p_volume);
+  } else {
+    return DRIVER_OP_UNSUPPORTED;
+  }
+}
+/*!
+  Playing CD through analog output
+  
+  @param p_cdio the CD object to be acted upon.
+*/
+driver_return_code_t 
+cdio_audio_pause (CdIo_t *p_cdio) 
+{
+  if (!p_cdio) return DRIVER_OP_UNINIT;
+
+  if (!p_cdio->op.audio_pause) {
+    return p_cdio->op.audio_pause (p_cdio->env);
+  } else {
+    return DRIVER_OP_UNSUPPORTED;
+  }
+}
+
+/*!
+  Playing CD through analog output at the given MSF.
+  
+  @param p_cdio the CD object to be acted upon.
+*/
+driver_return_code_t 
+cdio_audio_play_msf (CdIo_t *p_cdio, msf_t *p_msf)
+{
+  if (!p_cdio) return DRIVER_OP_UNINIT;
+
+  if (!p_cdio->op.audio_play_msf) {
+    return p_cdio->op.audio_play_msf (p_cdio->env, p_msf);
+  } else {
+    return DRIVER_OP_UNSUPPORTED;
+  }
+}
+
+/*!
+  Playing CD through analog output
+  
+  @param p_cdio the CD object to be acted upon.
+*/
+driver_return_code_t 
+cdio_audio_play_track_index (CdIo_t *p_cdio, cdio_track_index_t *p_track_index)
+{
+  if (!p_cdio) return DRIVER_OP_UNINIT;
+
+  if (!p_cdio->op.audio_play_track_index) {
+    return p_cdio->op.audio_play_track_index (p_cdio->env, p_track_index);
+  } else {
+    return DRIVER_OP_UNSUPPORTED;
+  }
+}
+
+/*!
+  Get subchannel information.
+  
+  @param p_cdio the CD object to be acted upon.
+*/
+driver_return_code_t 
+cdio_audio_read_subchannel (CdIo_t *p_cdio, cdio_subchannel_t *p_subchannel)
+{
+  if (!p_cdio) return DRIVER_OP_UNINIT;
+
+  if (!p_cdio->op.audio_read_subchannel) {
+    return p_cdio->op.audio_read_subchannel(p_cdio->env, p_subchannel);
+  } else {
+    return DRIVER_OP_UNSUPPORTED;
+  }
+}
+
+/*!
+  Resume playing an audio CD.
+  
+  @param p_cdio the CD object to be acted upon.
+  
+*/
+driver_return_code_t 
+cdio_audio_resume (CdIo_t *p_cdio)
+{
+  if (!p_cdio) return DRIVER_OP_UNINIT;
+
+  if (!p_cdio->op.audio_resume) {
+    return p_cdio->op.audio_resume(p_cdio->env);
+  } else {
+    return DRIVER_OP_UNSUPPORTED;
+  }
+}
+
+/*!
+  Set volume of an audio CD.
+  
+  @param p_cdio the CD object to be acted upon.
+  
+*/
+driver_return_code_t 
+cdio_audio_set_volume (CdIo_t *p_cdio,  const cdio_audio_volume_t *p_volume)
+{
+  if (!p_cdio) return DRIVER_OP_UNINIT;
+
+  if (!p_cdio->op.audio_set_volume) {
+    return p_cdio->op.audio_set_volume(p_cdio->env, p_volume);
+  } else {
+    return DRIVER_OP_UNSUPPORTED;
+  }
+}