Straighten out the mad twisted state of sound.c and related areas.

This is going right in since it's long overdue. If anything is goofed,
drop me a line or just tweak it yourself if you know what's wrong. :-)

Make HW/SW codec interface more uniform when emulating HW functionality
on SWCODEC for functions such as "audiohw_set_pitch". The firmware-to-
DSP plumbing is in firmware/drivers/audiohw-swcodec.c. "sound_XXX"
APIs are all in sound.c with none in DSP code any longer.

Reduce number of settings definitions needed by each codec by providing
defaults for common ones like balance, channels and SW tone controls.

Remove need for separate SIM code and tables and add virtual codec header
for hosted targets.

Change-Id: I3f23702bca054fc9bda40f49824ce681bb7f777b

1 files changed, 76 insertions, 0 deletions

diff --git a/firmware/drivers/audio/audiohw-swcodec.c b/firmware/drivers/audio/audiohw-swcodec.c
new file mode 100644
index 0000000000..45b21183ad
--- /dev/null
+++ b/firmware/drivers/audio/audiohw-swcodec.c
@@ -0,0 +1,76 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2007 by Thom Johansen
+ *
+ * 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 "system.h"
+#include "sound.h"
+#include "dsp_misc.h"
+
+/* Linking audio hardware calls to SWCODEC DSP emulation */
+
+static audiohw_swcodec_cb_type callback = NULL;
+
+void audiohw_swcodec_set_callback(audiohw_swcodec_cb_type func)
+{
+    callback = func;
+}
+
+/** Functions exported by audiohw.h **/
+
+void audiohw_set_channel(int value)
+{
+    callback(DSP_CALLBACK_SET_CHANNEL_CONFIG, value);
+}
+
+void audiohw_set_stereo_width(int value)
+{
+    callback(DSP_CALLBACK_SET_STEREO_WIDTH, value);
+}
+
+#ifdef HAVE_SW_TONE_CONTROLS
+void audiohw_set_bass(int value)
+{
+    callback(DSP_CALLBACK_SET_BASS, value);
+}
+
+void audiohw_set_treble(int value)
+{
+    callback(DSP_CALLBACK_SET_TREBLE, value);
+}
+#endif /* HAVE_SW_TONE_CONTROLS */
+
+#ifndef AUDIOHW_HAVE_PRESCALER
+void audiohw_set_prescaler(int value)
+{
+    callback(DSP_CALLBACK_SET_PRESCALE, value);
+}
+#endif /* AUDIOHW_HAVE_PRESCALER */
+
+#ifdef HAVE_PITCHCONTROL
+void audiohw_set_pitch(int32_t value)
+{
+    callback(DSP_CALLBACK_SET_PITCH, value);
+}
+
+int32_t audiohw_get_pitch(void)
+{
+    return callback(DSP_CALLBACK_GET_PITCH, 0);
+}
+#endif /* HAVE_PITCHCONTROL */