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/fixed_arm4.h | 148 +++++++++++++++++++++++++++++++ 1 file changed, 148 insertions(+) create mode 100644 lib/rbcodec/codecs/libspeex/fixed_arm4.h (limited to 'lib/rbcodec/codecs/libspeex/fixed_arm4.h') diff --git a/lib/rbcodec/codecs/libspeex/fixed_arm4.h b/lib/rbcodec/codecs/libspeex/fixed_arm4.h new file mode 100644 index 0000000000..b6981cae72 --- /dev/null +++ b/lib/rbcodec/codecs/libspeex/fixed_arm4.h @@ -0,0 +1,148 @@ +/* Copyright (C) 2004 Jean-Marc Valin */ +/** + @file fixed_arm4.h + @brief ARM4 fixed-point operations +*/ +/* + 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. +*/ + +#ifndef FIXED_ARM4_H +#define FIXED_ARM4_H + +#undef MULT16_32_Q14 +static inline spx_word32_t MULT16_32_Q14(spx_word16_t x, spx_word32_t y) { + int res; + int dummy; + asm ( + "smull %0,%1,%2,%3 \n\t" + "mov %0, %0, lsr #14 \n\t" + "add %0, %0, %1, lsl #18 \n\t" + : "=&r"(res), "=&r" (dummy) + : "r"(y),"r"((int)x)); + return(res); +} + +#undef MULT16_32_Q15 +static inline spx_word32_t MULT16_32_Q15(spx_word16_t x, spx_word32_t y) { + int res; + int dummy; + asm ( + "smull %0,%1,%2,%3 \n\t" + "mov %0, %0, lsr #15 \n\t" + "add %0, %0, %1, lsl #17 \n\t" + : "=&r"(res), "=&r" (dummy) + : "r"(y),"r"((int)x)); + return(res); +} + +#undef DIV32_16 +static inline short DIV32_16(int a, int b) +{ + int res=0; + int dead1, dead2, dead3, dead4, dead5; + __asm__ __volatile__ ( + "\teor %5, %0, %1\n" + "\tmovs %4, %0\n" + "\trsbmi %0, %0, #0 \n" + "\tmovs %4, %1\n" + "\trsbmi %1, %1, #0 \n" + "\tmov %4, #1\n" + + "\tsubs %3, %0, %1, asl #14 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #14 \n" + + "\tsubs %3, %0, %1, asl #13 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #13 \n" + + "\tsubs %3, %0, %1, asl #12 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #12 \n" + + "\tsubs %3, %0, %1, asl #11 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #11 \n" + + "\tsubs %3, %0, %1, asl #10 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #10 \n" + + "\tsubs %3, %0, %1, asl #9 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #9 \n" + + "\tsubs %3, %0, %1, asl #8 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #8 \n" + + "\tsubs %3, %0, %1, asl #7 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #7 \n" + + "\tsubs %3, %0, %1, asl #6 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #6 \n" + + "\tsubs %3, %0, %1, asl #5 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #5 \n" + + "\tsubs %3, %0, %1, asl #4 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #4 \n" + + "\tsubs %3, %0, %1, asl #3 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #3 \n" + + "\tsubs %3, %0, %1, asl #2 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #2 \n" + + "\tsubs %3, %0, %1, asl #1 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4, asl #1 \n" + + "\tsubs %3, %0, %1 \n" + "\tmovpl %0, %3 \n" + "\torrpl %2, %2, %4 \n" + + "\tmovs %5, %5, lsr #31 \n" + "\trsbne %2, %2, #0 \n" + : "=r" (dead1), "=r" (dead2), "=r" (res), + "=r" (dead3), "=r" (dead4), "=r" (dead5) + : "0" (a), "1" (b), "2" (res) + : "cc" + ); + return res; +} + + +#endif -- cgit v1.2.3