995dcb610c
Took the opportunity to undo the Godot changed made to the
opus source. The opus module should eventually be built in its
own environment to avoid polluting others with too many include
dirs and defines.
TODO: Fix the platform/ stuff for opus.
(cherry picked from commit d9a291f641)
speex module was only added while cherry-picking, as speex is removed
in the master branch but we don't want to break compatibility in 2.1.x.
Unbundling wasn't done as the module uses the internal speex_free,
so it would require some more work.
173 lines
4.6 KiB
C++
173 lines
4.6 KiB
C++
/* Copyright (C) 2005 Analog Devices
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Author: Jean-Marc Valin */
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/**
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@file fixed_bfin.h
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@brief Blackfin fixed-point operations
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*/
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/*
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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- Neither the name of the Xiph.org Foundation nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef FIXED_BFIN_H
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#define FIXED_BFIN_H
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#undef PDIV32_16
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static inline spx_word16_t PDIV32_16(spx_word32_t a, spx_word16_t b)
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{
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spx_word32_t res, bb;
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bb = b;
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a += b>>1;
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__asm__ (
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"P0 = 15;\n\t"
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"R0 = %1;\n\t"
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"R1 = %2;\n\t"
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//"R0 = R0 + R1;\n\t"
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"R0 <<= 1;\n\t"
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"DIVS (R0, R1);\n\t"
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"LOOP divide%= LC0 = P0;\n\t"
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"LOOP_BEGIN divide%=;\n\t"
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"DIVQ (R0, R1);\n\t"
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"LOOP_END divide%=;\n\t"
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"R0 = R0.L;\n\t"
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"%0 = R0;\n\t"
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: "=m" (res)
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: "m" (a), "m" (bb)
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: "P0", "R0", "R1", "cc");
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return res;
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}
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#undef DIV32_16
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static inline spx_word16_t DIV32_16(spx_word32_t a, spx_word16_t b)
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{
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spx_word32_t res, bb;
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bb = b;
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/* Make the roundinf consistent with the C version
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(do we need to do that?)*/
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if (a<0)
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a += (b-1);
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__asm__ (
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"P0 = 15;\n\t"
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"R0 = %1;\n\t"
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"R1 = %2;\n\t"
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"R0 <<= 1;\n\t"
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"DIVS (R0, R1);\n\t"
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"LOOP divide%= LC0 = P0;\n\t"
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"LOOP_BEGIN divide%=;\n\t"
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"DIVQ (R0, R1);\n\t"
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"LOOP_END divide%=;\n\t"
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"R0 = R0.L;\n\t"
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"%0 = R0;\n\t"
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: "=m" (res)
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: "m" (a), "m" (bb)
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: "P0", "R0", "R1", "cc");
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return res;
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}
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#undef MAX16
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static inline spx_word16_t MAX16(spx_word16_t a, spx_word16_t b)
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{
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spx_word32_t res;
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__asm__ (
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"%1 = %1.L (X);\n\t"
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"%2 = %2.L (X);\n\t"
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"%0 = MAX(%1,%2);"
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: "=d" (res)
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: "%d" (a), "d" (b)
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);
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return res;
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}
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#undef MULT16_32_Q15
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static inline spx_word32_t MULT16_32_Q15(spx_word16_t a, spx_word32_t b)
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{
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spx_word32_t res;
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__asm__
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(
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"A1 = %2.L*%1.L (M);\n\t"
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"A1 = A1 >>> 15;\n\t"
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"%0 = (A1 += %2.L*%1.H) ;\n\t"
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: "=&W" (res), "=&d" (b)
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: "d" (a), "1" (b)
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: "A1"
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);
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return res;
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}
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#undef MAC16_32_Q15
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static inline spx_word32_t MAC16_32_Q15(spx_word32_t c, spx_word16_t a, spx_word32_t b)
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{
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spx_word32_t res;
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__asm__
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(
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"A1 = %2.L*%1.L (M);\n\t"
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"A1 = A1 >>> 15;\n\t"
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"%0 = (A1 += %2.L*%1.H);\n\t"
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"%0 = %0 + %4;\n\t"
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: "=&W" (res), "=&d" (b)
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: "d" (a), "1" (b), "d" (c)
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: "A1"
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);
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return res;
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}
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#undef MULT16_32_Q14
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static inline spx_word32_t MULT16_32_Q14(spx_word16_t a, spx_word32_t b)
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{
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spx_word32_t res;
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__asm__
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(
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"%2 <<= 1;\n\t"
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"A1 = %1.L*%2.L (M);\n\t"
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"A1 = A1 >>> 15;\n\t"
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"%0 = (A1 += %1.L*%2.H);\n\t"
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: "=W" (res), "=d" (a), "=d" (b)
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: "1" (a), "2" (b)
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: "A1"
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);
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return res;
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}
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#undef MAC16_32_Q14
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static inline spx_word32_t MAC16_32_Q14(spx_word32_t c, spx_word16_t a, spx_word32_t b)
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{
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spx_word32_t res;
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__asm__
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(
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"%1 <<= 1;\n\t"
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"A1 = %2.L*%1.L (M);\n\t"
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"A1 = A1 >>> 15;\n\t"
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"%0 = (A1 += %2.L*%1.H);\n\t"
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"%0 = %0 + %4;\n\t"
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: "=&W" (res), "=&d" (b)
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: "d" (a), "1" (b), "d" (c)
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: "A1"
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);
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return res;
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}
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#endif
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