00001 /* 00002 * Copyright (c) 2012 00003 * MIPS Technologies, Inc., California. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its 00014 * contributors may be used to endorse or promote products derived from 00015 * this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND 00018 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00019 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00020 * ARE DISCLAIMED. IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE 00021 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00022 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00023 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00024 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00025 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00026 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00027 * SUCH DAMAGE. 00028 * 00029 * Author: Nedeljko Babic (nbabic@mips.com) 00030 * 00031 * adaptive and fixed codebook vector operations for ACELP-based codecs 00032 * optimized for MIPS 00033 * 00034 * This file is part of FFmpeg. 00035 * 00036 * FFmpeg is free software; you can redistribute it and/or 00037 * modify it under the terms of the GNU Lesser General Public 00038 * License as published by the Free Software Foundation; either 00039 * version 2.1 of the License, or (at your option) any later version. 00040 * 00041 * FFmpeg is distributed in the hope that it will be useful, 00042 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00043 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00044 * Lesser General Public License for more details. 00045 * 00046 * You should have received a copy of the GNU Lesser General Public 00047 * License along with FFmpeg; if not, write to the Free Software 00048 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00049 */ 00050 00055 #include "libavcodec/acelp_vectors.h" 00056 00057 static void ff_weighted_vector_sumf_mips( 00058 float *out, const float *in_a, const float *in_b, 00059 float weight_coeff_a, float weight_coeff_b, int length) 00060 { 00061 const float *a_end = in_a + length; 00062 00063 /* loop unrolled two times */ 00064 __asm__ volatile ( 00065 "blez %[length], ff_weighted_vector_sumf_end%= \n\t" 00066 00067 "ff_weighted_vector_sumf_madd%=: \n\t" 00068 "lwc1 $f0, 0(%[in_a]) \n\t" 00069 "lwc1 $f3, 4(%[in_a]) \n\t" 00070 "lwc1 $f1, 0(%[in_b]) \n\t" 00071 "lwc1 $f4, 4(%[in_b]) \n\t" 00072 "mul.s $f2, %[weight_coeff_a], $f0 \n\t" 00073 "mul.s $f5, %[weight_coeff_a], $f3 \n\t" 00074 "madd.s $f2, $f2, %[weight_coeff_b], $f1 \n\t" 00075 "madd.s $f5, $f5, %[weight_coeff_b], $f4 \n\t" 00076 "addiu %[in_a], 8 \n\t" 00077 "addiu %[in_b], 8 \n\t" 00078 "swc1 $f2, 0(%[out]) \n\t" 00079 "swc1 $f5, 4(%[out]) \n\t" 00080 "addiu %[out], 8 \n\t" 00081 "bne %[in_a], %[a_end], ff_weighted_vector_sumf_madd%= \n\t" 00082 00083 "ff_weighted_vector_sumf_end%=: \n\t" 00084 00085 : [out] "+r" (out), [in_a] "+r" (in_a), [in_b] "+r" (in_b) 00086 : [weight_coeff_a] "f" (weight_coeff_a), 00087 [weight_coeff_b] "f" (weight_coeff_b), 00088 [length] "r" (length), [a_end]"r"(a_end) 00089 : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5" 00090 ); 00091 } 00092 00093 void ff_acelp_vectors_init_mips(ACELPVContext *c) 00094 { 00095 c->weighted_vector_sumf = ff_weighted_vector_sumf_mips; 00096 }
1.5.8