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FFmpeg/libavcodec/mips/amrwbdec_mips.c
Michael Niedermayer dd0a9b78db replace all __volatile__ by volatile 
__volatile__ can cause problems with some compilers and volatile is a standard keyword.

Found-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-07-11 04:04:29 +02:00

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/*
* Copyright (c) 2012
* MIPS Technologies, Inc., California.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of the MIPS Technologies, Inc., 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 MIPS TECHNOLOGIES, INC. ``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 MIPS TECHNOLOGIES, INC. 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.
*
* Author: Nedeljko Babic (nbabic@mips.com)
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* Reference: libavcodec/amrwbdec.c
*/
#include "libavutil/avutil.h"
#include "libavcodec/amrwbdata.h"
#include "amrwbdec_mips.h"
void hb_fir_filter_mips(float *out, const float fir_coef[HB_FIR_SIZE + 1],
float mem[HB_FIR_SIZE], const float *in)
{
int i;
float data[AMRWB_SFR_SIZE_16k + HB_FIR_SIZE]; // past and current samples
memcpy(data, mem, HB_FIR_SIZE * sizeof(float));
memcpy(data + HB_FIR_SIZE, in, AMRWB_SFR_SIZE_16k * sizeof(float));
for (i = 0; i < AMRWB_SFR_SIZE_16k; i++) {
float output;
float * p_data = (data+i);
/**
* inner loop is entirely unrolled and instructions are scheduled
* to minimize pipeline stall
*/
__asm__ volatile(
"mtc1 $zero, %[output] \n\t"
"lwc1 $f0, 0(%[p_data]) \n\t"
"lwc1 $f1, 0(%[fir_coef]) \n\t"
"lwc1 $f2, 4(%[p_data]) \n\t"
"madd.s %[output], %[output], $f0, $f1 \n\t"
"lwc1 $f3, 4(%[fir_coef]) \n\t"
"lwc1 $f4, 8(%[p_data]) \n\t"
"madd.s %[output], %[output], $f2, $f3 \n\t"
"lwc1 $f5, 8(%[fir_coef]) \n\t"
"lwc1 $f0, 12(%[p_data]) \n\t"
"lwc1 $f1, 12(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f4, $f5 \n\t"
"lwc1 $f2, 16(%[p_data]) \n\t"
"madd.s %[output], %[output], $f0, $f1 \n\t"
"lwc1 $f3, 16(%[fir_coef]) \n\t"
"lwc1 $f4, 20(%[p_data]) \n\t"
"lwc1 $f5, 20(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f2, $f3 \n\t"
"lwc1 $f0, 24(%[p_data]) \n\t"
"lwc1 $f1, 24(%[fir_coef]) \n\t"
"lwc1 $f2, 28(%[p_data]) \n\t"
"madd.s %[output], %[output], $f4, $f5 \n\t"
"lwc1 $f3, 28(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f0, $f1 \n\t"
"lwc1 $f4, 32(%[p_data]) \n\t"
"madd.s %[output], %[output], $f2, $f3 \n\t"
"lwc1 $f5, 32(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f4, $f5 \n\t"
"lwc1 $f0, 36(%[p_data]) \n\t"
"lwc1 $f1, 36(%[fir_coef]) \n\t"
"lwc1 $f2, 40(%[p_data]) \n\t"
"lwc1 $f3, 40(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f0, $f1 \n\t"
"lwc1 $f4, 44(%[p_data]) \n\t"
"lwc1 $f5, 44(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f2, $f3 \n\t"
"lwc1 $f0, 48(%[p_data]) \n\t"
"lwc1 $f1, 48(%[fir_coef]) \n\t"
"lwc1 $f2, 52(%[p_data]) \n\t"
"madd.s %[output], %[output], $f4, $f5 \n\t"
"lwc1 $f3, 52(%[fir_coef]) \n\t"
"lwc1 $f4, 56(%[p_data]) \n\t"
"madd.s %[output], %[output], $f0, $f1 \n\t"
"lwc1 $f5, 56(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f2, $f3 \n\t"
"lwc1 $f0, 60(%[p_data]) \n\t"
"lwc1 $f1, 60(%[fir_coef]) \n\t"
"lwc1 $f2, 64(%[p_data]) \n\t"
"madd.s %[output], %[output], $f4, $f5 \n\t"
"lwc1 $f3, 64(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f0, $f1 \n\t"
"lwc1 $f4, 68(%[p_data]) \n\t"
"madd.s %[output], %[output], $f2, $f3 \n\t"
"lwc1 $f5, 68(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f4, $f5 \n\t"
"lwc1 $f0, 72(%[p_data]) \n\t"
"lwc1 $f1, 72(%[fir_coef]) \n\t"
"lwc1 $f2, 76(%[p_data]) \n\t"
"lwc1 $f3, 76(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f0, $f1 \n\t"
"lwc1 $f4, 80(%[p_data]) \n\t"
"lwc1 $f5, 80(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f2, $f3 \n\t"
"lwc1 $f0, 84(%[p_data]) \n\t"
"lwc1 $f1, 84(%[fir_coef]) \n\t"
"lwc1 $f2, 88(%[p_data]) \n\t"
"madd.s %[output], %[output], $f4, $f5 \n\t"
"lwc1 $f3, 88(%[fir_coef]) \n\t"
"lwc1 $f4, 92(%[p_data]) \n\t"
"madd.s %[output], %[output], $f0, $f1 \n\t"
"lwc1 $f5, 92(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f2, $f3 \n\t"
"lwc1 $f0, 96(%[p_data]) \n\t"
"lwc1 $f1, 96(%[fir_coef]) \n\t"
"lwc1 $f2, 100(%[p_data]) \n\t"
"madd.s %[output], %[output], $f4, $f5 \n\t"
"lwc1 $f3, 100(%[fir_coef]) \n\t"
"lwc1 $f4, 104(%[p_data]) \n\t"
"madd.s %[output], %[output], $f0, $f1 \n\t"
"lwc1 $f5, 104(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f2, $f3 \n\t"
"lwc1 $f0, 108(%[p_data]) \n\t"
"lwc1 $f1, 108(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f4, $f5 \n\t"
"lwc1 $f2, 112(%[p_data]) \n\t"
"lwc1 $f3, 112(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f0, $f1 \n\t"
"lwc1 $f4, 116(%[p_data]) \n\t"
"lwc1 $f5, 116(%[fir_coef]) \n\t"
"lwc1 $f0, 120(%[p_data]) \n\t"
"madd.s %[output], %[output], $f2, $f3 \n\t"
"lwc1 $f1, 120(%[fir_coef]) \n\t"
"madd.s %[output], %[output], $f4, $f5 \n\t"
"madd.s %[output], %[output], $f0, $f1 \n\t"
: [output]"=&f"(output)
: [fir_coef]"r"(fir_coef), [p_data]"r"(p_data)
: "$f0", "$f1", "$f2", "$f3", "$f4", "$f5"
);
out[i] = output;
}
memcpy(mem, data + AMRWB_SFR_SIZE_16k, HB_FIR_SIZE * sizeof(float));
}
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