0,0 → 1,89 |
/* |
* 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) |
* |
* Math operations optimized for MIPS |
* |
* 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/celp_math.c |
*/ |
#include "config.h" |
#include "libavcodec/celp_math.h" |
|
#if HAVE_INLINE_ASM |
static float ff_dot_productf_mips(const float* a, const float* b, |
int length) |
{ |
float sum; |
const float* a_end = a + length; |
|
__asm__ volatile ( |
"mtc1 $zero, %[sum] \n\t" |
"blez %[length], ff_dot_productf_end%= \n\t" |
"ff_dot_productf_madd%=: \n\t" |
"lwc1 $f2, 0(%[a]) \n\t" |
"lwc1 $f1, 0(%[b]) \n\t" |
"addiu %[a], %[a], 4 \n\t" |
"addiu %[b], %[b], 4 \n\t" |
"madd.s %[sum], %[sum], $f1, $f2 \n\t" |
"bne %[a], %[a_end], ff_dot_productf_madd%= \n\t" |
"ff_dot_productf_end%=: \n\t" |
|
: [sum] "=&f" (sum), [a] "+r" (a), [b] "+r" (b) |
: [a_end]"r"(a_end), [length] "r" (length) |
: "$f1", "$f2", "memory" |
); |
return sum; |
} |
#endif /* HAVE_INLINE_ASM */ |
|
void ff_celp_math_init_mips(CELPMContext *c) |
{ |
#if HAVE_INLINE_ASM |
c->dot_productf = ff_dot_productf_mips; |
#endif |
} |