From 01beb9919b95479d8be040bec74abc5cc67a5e43 Mon Sep 17 00:00:00 2001
From: Mikko Tiusanen <ams@daug.net>
Date: Sun, 4 May 2014 01:18:52 +0300
Subject: Initial import.

---
 src/libspeex/cb_search_bfin.h | 112 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 src/libspeex/cb_search_bfin.h

(limited to 'src/libspeex/cb_search_bfin.h')

diff --git a/src/libspeex/cb_search_bfin.h b/src/libspeex/cb_search_bfin.h
new file mode 100644
index 0000000..ae9cf83
--- /dev/null
+++ b/src/libspeex/cb_search_bfin.h
@@ -0,0 +1,112 @@
+/* Copyright (C) 2005 Analog Devices */
+/**
+   @author Jean-Marc Valin 
+   @file cb_search_bfin.h
+   @brief Fixed codebook functions (Blackfin version)
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+   
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+   
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+   
+   - Neither the name of the Xiph.org Foundation nor the names of its
+   contributors may be used to endorse or promote products derived from
+   this software without specific prior written permission.
+   
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define OVERRIDE_COMPUTE_WEIGHTED_CODEBOOK 
+void compute_weighted_codebook(const signed char *shape_cb, const spx_word16_t *r, spx_word16_t *resp, spx_word16_t *resp2, spx_word32_t *E, int shape_cb_size, int subvect_size, char *stack)
+{
+   int i;
+   for (i=0;i<shape_cb_size;i++)
+   {
+      __asm__ __volatile__ (
+         "P0 = %0;\n\t"
+         "LC0 = P0;\n\t"
+         "P1 = %1;\n\t"
+         "P2 = %2;\n\t"
+         "P3 = %3;\n\t"
+         "P0 = 1;\n\t"
+         "L0 = 0;\n\t"
+         "L1 = 0;\n\t"
+         "R2 = 0;\n\t"
+         "A1 = 0;\n\t"
+         "LOOP outter%= LC0;\n\t"
+         "LOOP_BEGIN outter%=;\n\t"
+            "A0 = 0;\n\t"
+            "P4 = P1;\n\t"
+            "I1 = P2;\n\t"
+            "R0 = B[P4++] (X) || R1.L = W[I1--];\n\t"
+            "LOOP inner%= LC1 = P0;\n\t"
+            "LOOP_BEGIN inner%=;\n\t"
+               "A0 += R0.L*R1.L (IS) || R0 = B[P4++] (X) || R1.L = W[I1--];\n\t"
+            "LOOP_END inner%=;\n\t"
+            "R0 = A0;\n\t"
+            "R0 >>>= 13;\n\t"
+            "A1 += R0.L*R0.L (IS);\n\t"
+            "W[P3++] = R0;\n\t"
+            "P0 += 1;\n\t"
+            "P2 += 2;\n\t"
+         "LOOP_END outter%=;\n\t"
+         "P4 = %4;\n\t"
+         "R1 = A1;\n\t"
+         "[P4] = R1;\n\t"
+         :
+      : "m" (subvect_size), "m" (shape_cb), "m" (r), "m" (resp), "m" (E)
+      : "A0", "P0", "P1", "P2", "P3", "P4", "R0", "R1", "R2", "I0", "I1", "L0", 
+        "L1", "A0", "A1", "memory"
+#if !(__GNUC__ == 3)
+         , "LC0", "LC1" /* gcc 3.4 doesn't know about LC registers */
+#endif
+      );
+      shape_cb += subvect_size;
+      resp += subvect_size;
+      E++;
+   }
+}
+
+#define OVERRIDE_TARGET_UPDATE
+static inline void target_update(spx_word16_t *t, spx_word16_t g, spx_word16_t *r, int len)
+{
+   if (!len)
+      return;
+   __asm__ __volatile__
+         (
+         "I0 = %0;\n\t"
+         "I1 = %1;\n\t"
+         "L0 = 0;\n\t"
+         "L1 = 0;\n\t"
+         "R2 = 4096;\n\t"
+         "LOOP tupdate%= LC0 = %3;\n\t"
+         "LOOP_BEGIN tupdate%=;\n\t"
+            "R0.L = W[I0] || R1.L = W[I1++];\n\t"
+            "R1 = (A1 = R1.L*%2.L) (IS);\n\t"
+            "R1 = R1 + R2;\n\t"
+            "R1 >>>= 13;\n\t"
+            "R0.L = R0.L - R1.L;\n\t"
+            "W[I0++] = R0.L;\n\t"
+         "LOOP_END tupdate%=;\n\t"
+   :
+   : "a" (t), "a" (r), "d" (g), "a" (len)
+   : "R0", "R1", "R2", "A1", "I0", "I1", "L0", "L1"
+         );
+}
-- 
cgit