From f40bfc9267b13b54e6379dfe7539447662879d24 Mon Sep 17 00:00:00 2001 From: Sean Bartell Date: Sat, 25 Jun 2011 21:32:25 -0400 Subject: Add codecs to librbcodec. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97 Reviewed-on: http://gerrit.rockbox.org/137 Reviewed-by: Nils Wallménius Tested-by: Nils Wallménius --- lib/rbcodec/codecs/libspeex/lsp_bfin.h | 89 ++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 lib/rbcodec/codecs/libspeex/lsp_bfin.h (limited to 'lib/rbcodec/codecs/libspeex/lsp_bfin.h') diff --git a/lib/rbcodec/codecs/libspeex/lsp_bfin.h b/lib/rbcodec/codecs/libspeex/lsp_bfin.h new file mode 100644 index 0000000000..20e505287e --- /dev/null +++ b/lib/rbcodec/codecs/libspeex/lsp_bfin.h @@ -0,0 +1,89 @@ +/* Copyright (C) 2006 David Rowe */ +/** + @file lsp_bfin.h + @author David Rowe + @brief LSP routines optimised for the Blackfin +*/ +/* + 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_CHEB_POLY_EVA +#ifdef OVERRIDE_CHEB_POLY_EVA +static inline spx_word32_t cheb_poly_eva( + spx_word16_t *coef, /* P or Q coefs in Q13 format */ + spx_word16_t x, /* cos of freq (-1.0 to 1.0) in Q14 format */ + int m, /* LPC order/2 */ + char *stack +) +{ + spx_word32_t sum; + + __asm__ __volatile__ + ( + "P0 = %2;\n\t" /* P0: coef[m], coef[m-1],..., coef[0] */ + "R4 = 8192;\n\t" /* R4: rounding constant */ + "R2 = %1;\n\t" /* R2: x */ + + "R5 = -16383;\n\t" + "R2 = MAX(R2,R5);\n\t" + "R5 = 16383;\n\t" + "R2 = MIN(R2,R5);\n\t" + + "R3 = W[P0--] (X);\n\t" /* R3: sum */ + "R5 = W[P0--] (X);\n\t" + "R5 = R5.L * R2.L (IS);\n\t" + "R5 = R5 + R4;\n\t" + "R5 >>>= 14;\n\t" + "R3 = R3 + R5;\n\t" + + "R0 = R2;\n\t" /* R0: b0 */ + "R1 = 16384;\n\t" /* R1: b1 */ + "LOOP cpe%= LC0 = %3;\n\t" + "LOOP_BEGIN cpe%=;\n\t" + "P1 = R0;\n\t" + "R0 = R2.L * R0.L (IS) || R5 = W[P0--] (X);\n\t" + "R0 >>>= 13;\n\t" + "R0 = R0 - R1;\n\t" + "R1 = P1;\n\t" + "R5 = R5.L * R0.L (IS);\n\t" + "R5 = R5 + R4;\n\t" + "R5 >>>= 14;\n\t" + "R3 = R3 + R5;\n\t" + "LOOP_END cpe%=;\n\t" + "%0 = R3;\n\t" + : "=&d" (sum) + : "a" (x), "a" (&coef[m]), "a" (m-1) + : "R0", "R1", "R3", "R2", "R4", "R5", "P0", "P1" + ); + return sum; +} +#endif + + + -- cgit v1.2.3