1 files changed, 45 insertions, 0 deletions

diff --git a/lib/rbcodec/codecs/libspc/cpu/spc_dsp_armv6.h b/lib/rbcodec/codecs/libspc/cpu/spc_dsp_armv6.h
new file mode 100644
index 0000000000..a36d8166c2
--- /dev/null
+++ b/lib/rbcodec/codecs/libspc/cpu/spc_dsp_armv6.h
@@ -0,0 +1,45 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 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,
+    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 ) - 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.
+     * |LR|LR|LR|LR|LR|LR|LR|LR|--|--|--|--|--|--|--|--| */
+    /* copy of echo FIR constants as int16_t, loaded as int32 for
+     * halfword, packed multiples */
+    int16_t coeff [VOICE_COUNT];
+};
+
+#endif /* SPC_NOECHO */