From 87021f7c0ac4620eafd185ff11905ee643f72b6c Mon Sep 17 00:00:00 2001
From: Michael Sevakis <jethead71@rockbox.org>
Date: Sat, 18 May 2013 01:45:03 -0400
Subject: SPC Codec: Refactor for CPU and clean up some things.

CPU optimization gets its own files in which to fill-in optimizable
routines.

Some pointless #if 0's for profiling need removal. Those macros are
empty if not profiling.

Force some functions that are undesirable to be force-inlined by the
compiler to be not inlined.

Change-Id: Ia7b7e45380d7efb20c9b1a4d52e05db3ef6bbaab
---
 lib/rbcodec/codecs/libspc/cpu/spc_dsp_armv4.h | 45 +++++++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 lib/rbcodec/codecs/libspc/cpu/spc_dsp_armv4.h

(limited to 'lib/rbcodec/codecs/libspc/cpu/spc_dsp_armv4.h')

diff --git a/lib/rbcodec/codecs/libspc/cpu/spc_dsp_armv4.h b/lib/rbcodec/codecs/libspc/cpu/spc_dsp_armv4.h
new file mode 100644
index 0000000000..c9985e124a
--- /dev/null
+++ b/lib/rbcodec/codecs/libspc/cpu/spc_dsp_armv4.h
@@ -0,0 +1,45 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2007-2010 Michael Sevakis (jhMikeS)
+ *
+ * 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.
+ *
+ ****************************************************************************/
+#if !SPC_NOECHO
+
+#define SPC_DSP_ECHO_APPLY
+
+enum
+{
+    FIR_BUF_CNT   = FIR_BUF_HALF * 2 * 2,
+    FIR_BUF_SIZE  = FIR_BUF_CNT * sizeof ( int32_t ),
+    FIR_BUF_ALIGN = FIR_BUF_SIZE,
+    FIR_BUF_MASK  = ~((FIR_BUF_ALIGN / 2) | (sizeof ( int32_t ) * 2 - 1))
+};
+
+/* Echo filter structure embedded in struct Spc_Dsp */
+struct echo_filter
+{
+   /* fir_buf [i + 8] == fir_buf [i], to avoid wrap checking in FIR code */
+    int32_t* ptr;
+    /* FIR history is interleaved with guard to eliminate wrap checking
+     * when convolving.
+     * |LL|RR|LL|RR|LL|RR|LL|RR|LL|RR|LL|RR|LL|RR|LL|RR|...
+     * |--|--|--|--|--|--|--|--|--|--|--|--|--|--|--|--| */
+    /* copy of echo FIR constants as int32_t, for faster access */
+    int32_t coeff [VOICE_COUNT]; 
+};
+#endif /* SPC_NOECHO */
-- 
cgit v1.2.3