Blackfin assembly optimizations.

git-svn-id: http://svn.xiph.org/trunk/speex@9357 0101bb08-14d6-0310-b084-bc0e0c8e3800

COPYING

@@ -1,4 +1,9 @@
-Copyright 2002-2004 Xiph.org Foundation, Jean-Marc Valin, David Rowe, EpicGames
+Copyright 2002-2005 
+        Xiph.org Foundation
+        Jean-Marc Valin
+        David Rowe
+        EpicGames
+        Analog Devices
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions

libspeex/Makefile.am

@@ -54,25 +54,30 @@ noinst_HEADERS = lsp.h \
 	filters.h \
 	stack_alloc.h \
 	vq.h \
-	vq_arm4.h \
 	vq_sse.h \
+	vq_arm4.h \
+	vq_bfin.h \
 	modes.h \
 	sb_celp.h \
 	vbr.h \
 	misc.h \
 	ltp_sse.h \
 	ltp_arm4.h \
+	ltp_bfin.h \
 	filters_sse.h \
 	filters_arm4.h \
+	filters_bfin.h \
 	math_approx.h \
 	smallft.h \
 	arch.h \
 	fixed_arm4.h \
 	fixed_arm5e.h \
+	fixed_bfin.h \
 	fixed_debug.h \
 	fixed_generic.h \
 	cb_search_sse.h \
-	cb_search_arm4.h
+	cb_search_arm4.h \
+	cb_search_bfin.h
 
 
 libspeex_la_LDFLAGS = -version-info @SPEEX_LT_CURRENT@:@SPEEX_LT_REVISION@:@SPEEX_LT_AGE@

libspeex/cb_search_bfin.h

@@ -0,0 +1,79 @@
+/* Copyright (C) 2005 Analog Devices
+   Author: Jean-Marc Valin 
+   File: cb_search_bfin.h
+   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"
+            "LOOP_END inner%=;\n\t"
+               "A0 += R0.L*R1.L (IS) || R0 = B[P4++] (X) || R1.L = W[I1--];\n\t" /* Is there a danger of reading too far? */
+            "R0 = A0;\n\t"
+            "R0 >>>= 11;\n\t"
+            "A1 += R0.L*R0.L (IS);\n\t"
+            "W[P3++] = R0;\n\t"
+            "P0 += 1;\n\t"
+         "LOOP_END outter%=;\n\t"
+            "P2 += 2;\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)
+      : "P0", "P1", "P2", "P3", "P4", "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", "I0", "I1", "L0", "L1", "B0", "B1", "A0", "A1", "memory"
+      );
+      shape_cb += subvect_size;
+      resp += subvect_size;
+      E++;
+   }
+}