| /* | |
| * 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) | |
| * | |
| * adaptive and fixed codebook vector operations for ACELP-based codecs | |
| * 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/acelp_vectors.c | |
| */ | |
| static void ff_weighted_vector_sumf_mips( | |
| float *out, const float *in_a, const float *in_b, | |
| float weight_coeff_a, float weight_coeff_b, int length) | |
| { | |
| const float *a_end = in_a + length; | |
| /* loop unrolled two times */ | |
| __asm__ volatile ( | |
| "blez %[length], ff_weighted_vector_sumf_end%= \n\t" | |
| "ff_weighted_vector_sumf_madd%=: \n\t" | |
| "lwc1 $f0, 0(%[in_a]) \n\t" | |
| "lwc1 $f3, 4(%[in_a]) \n\t" | |
| "lwc1 $f1, 0(%[in_b]) \n\t" | |
| "lwc1 $f4, 4(%[in_b]) \n\t" | |
| "mul.s $f2, %[weight_coeff_a], $f0 \n\t" | |
| "mul.s $f5, %[weight_coeff_a], $f3 \n\t" | |
| "madd.s $f2, $f2, %[weight_coeff_b], $f1 \n\t" | |
| "madd.s $f5, $f5, %[weight_coeff_b], $f4 \n\t" | |
| PTR_ADDIU "%[in_a],8 \n\t" | |
| PTR_ADDIU "%[in_b],8 \n\t" | |
| "swc1 $f2, 0(%[out]) \n\t" | |
| "swc1 $f5, 4(%[out]) \n\t" | |
| PTR_ADDIU "%[out], 8 \n\t" | |
| "bne %[in_a], %[a_end], ff_weighted_vector_sumf_madd%= \n\t" | |
| "ff_weighted_vector_sumf_end%=: \n\t" | |
| : [out] "+r" (out), [in_a] "+r" (in_a), [in_b] "+r" (in_b) | |
| : [weight_coeff_a] "f" (weight_coeff_a), | |
| [weight_coeff_b] "f" (weight_coeff_b), | |
| [length] "r" (length), [a_end]"r"(a_end) | |
| : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "memory" | |
| ); | |
| } | |
| void ff_acelp_vectors_init_mips(ACELPVContext *c) | |
| { | |
| c->weighted_vector_sumf = ff_weighted_vector_sumf_mips; | |
| } | |