1 files changed, 81 insertions, 0 deletions

diff --git a/firmware/target/hosted/ibasso/audiohw-ibasso.c b/firmware/target/hosted/ibasso/audiohw-ibasso.c
new file mode 100644
index 0000000000..447e133eba
--- /dev/null
+++ b/firmware/target/hosted/ibasso/audiohw-ibasso.c
@@ -0,0 +1,81 @@
+/***************************************************************************
+ *             __________               __   ___
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ *
+ * Copyright (C) 2014 by Ilia Sergachev: Initial Rockbox port to iBasso DX50
+ * Copyright (C) 2014 by Mario Basister: iBasso DX90 port
+ * Copyright (C) 2014 by Simon Rothen: Initial Rockbox repository submission, additional features
+ * Copyright (C) 2014 by Udo Schläpfer: Code clean up, additional features
+ *
+ * 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+
+#include "config.h"
+#include "debug.h"
+#include "pcm_sw_volume.h"
+#include "settings.h"
+
+#include "debug-ibasso.h"
+#include "pcm-ibasso.h"
+
+
+void audiohw_close(void)
+{
+    TRACE;
+
+    pcm_close_device();
+}
+
+
+void set_software_volume(void)
+{
+    /* -73dB (?) minimum software volume in decibels. See pcm-internal.h. */
+    static const int SW_VOLUME_MIN = 730;
+
+    int sw_volume_l = 0;
+    int sw_volume_r = 0;
+
+    if(global_settings.balance > 0)
+    {
+        if(global_settings.balance == 100)
+        {
+            sw_volume_l = PCM_MUTE_LEVEL;
+        }
+        else
+        {
+            sw_volume_l -= SW_VOLUME_MIN * global_settings.balance / 100;
+        }
+    }
+    else if(global_settings.balance < 0)
+    {
+        if(global_settings.balance == -100)
+        {
+            sw_volume_r = PCM_MUTE_LEVEL;
+        }
+        else
+        {
+            sw_volume_r = SW_VOLUME_MIN * global_settings.balance / 100;
+        }
+    }
+
+    DEBUGF("DEBUG %s: global_settings.balance: %d, sw_volume_l: %d, sw_volume_r: %d.",
+           __func__,
+           global_settings.balance,
+           sw_volume_l,
+           sw_volume_r);
+
+    /* Emulate balance with software volume. */
+    pcm_set_master_volume(sw_volume_l, sw_volume_r);
+}