/* * 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) * * various filters 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_filters.c */ #include "config.h" #include "libavutil/attributes.h" #include "libavcodec/acelp_filters.h" #include "libavutil/mips/asmdefs.h" #if HAVE_INLINE_ASM #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6 static void ff_acelp_interpolatef_mips(float *out, const float *in, const float *filter_coeffs, int precision, int frac_pos, int filter_length, int length) { int n, i; int prec = precision * 4; int fc_offset = precision - frac_pos; float in_val_p, in_val_m, fc_val_p, fc_val_m; for (n = 0; n < length; n++) { /** * four pointers are defined in order to minimize number of * computations done in inner loop */ const float *p_in_p = &in[n]; const float *p_in_m = &in[n-1]; const float *p_filter_coeffs_p = &filter_coeffs[frac_pos]; const float *p_filter_coeffs_m = filter_coeffs + fc_offset; float v = 0; for (i = 0; i < filter_length;i++) { __asm__ volatile ( "lwc1 %[in_val_p], 0(%[p_in_p]) \n\t" "lwc1 %[fc_val_p], 0(%[p_filter_coeffs_p]) \n\t" "lwc1 %[in_val_m], 0(%[p_in_m]) \n\t" "lwc1 %[fc_val_m], 0(%[p_filter_coeffs_m]) \n\t" PTR_ADDIU "%[p_in_p], %[p_in_p], 4 \n\t" "madd.s %[v],%[v], %[in_val_p],%[fc_val_p] \n\t" PTR_ADDIU "%[p_in_m], %[p_in_m], -4 \n\t" PTR_ADDU "%[p_filter_coeffs_p],%[p_filter_coeffs_p], %[prec] \n\t" PTR_ADDU "%[p_filter_coeffs_m],%[p_filter_coeffs_m], %[prec] \n\t" "madd.s %[v],%[v],%[in_val_m], %[fc_val_m] \n\t" : [v] "+&f" (v),[p_in_p] "+r" (p_in_p), [p_in_m] "+r" (p_in_m), [p_filter_coeffs_p] "+r" (p_filter_coeffs_p), [in_val_p] "=&f" (in_val_p), [in_val_m] "=&f" (in_val_m), [fc_val_p] "=&f" (fc_val_p), [fc_val_m] "=&f" (fc_val_m), [p_filter_coeffs_m] "+r" (p_filter_coeffs_m) : [prec] "r" (prec) : "memory" ); } out[n] = v; } } static void ff_acelp_apply_order_2_transfer_function_mips(float *out, const float *in, const float zero_coeffs[2], const float pole_coeffs[2], float gain, float mem[2], int n) { /** * loop is unrolled eight times */ __asm__ volatile ( "lwc1 $f0, 0(%[mem]) \n\t" "blez %[n], ff_acelp_apply_order_2_transfer_function_end%= \n\t" "lwc1 $f1, 4(%[mem]) \n\t" "lwc1 $f2, 0(%[pole_coeffs]) \n\t" "lwc1 $f3, 4(%[pole_coeffs]) \n\t" "lwc1 $f4, 0(%[zero_coeffs]) \n\t" "lwc1 $f5, 4(%[zero_coeffs]) \n\t" "ff_acelp_apply_order_2_transfer_function_madd%=: \n\t" "lwc1 $f6, 0(%[in]) \n\t" "mul.s $f9, $f3, $f1 \n\t" "mul.s $f7, $f2, $f0 \n\t" "msub.s $f7, $f7, %[gain], $f6 \n\t" "sub.s $f7, $f7, $f9 \n\t" "madd.s $f8, $f7, $f4, $f0 \n\t" "madd.s $f8, $f8, $f5, $f1 \n\t" "lwc1 $f11, 4(%[in]) \n\t" "mul.s $f12, $f3, $f0 \n\t" "mul.s $f13, $f2, $f7 \n\t" "msub.s $f13, $f13, %[gain], $f11 \n\t" "sub.s $f13, $f13, $f12 \n\t" "madd.s $f14, $f13, $f4, $f7 \n\t" "madd.s $f14, $f14, $f5, $f0 \n\t" "swc1 $f8, 0(%[out]) \n\t" "lwc1 $f6, 8(%[in]) \n\t" "mul.s $f9, $f3, $f7 \n\t" "mul.s $f15, $f2, $f13 \n\t" "msub.s $f15, $f15, %[gain], $f6 \n\t" "sub.s $f15, $f15, $f9 \n\t" "madd.s $f8, $f15, $f4, $f13 \n\t" "madd.s $f8, $f8, $f5, $f7 \n\t" "swc1 $f14, 4(%[out]) \n\t" "lwc1 $f11, 12(%[in]) \n\t" "mul.s $f12, $f3, $f13 \n\t" "mul.s $f16, $f2, $f15 \n\t" "msub.s $f16, $f16, %[gain], $f11 \n\t" "sub.s $f16, $f16, $f12 \n\t" "madd.s $f14, $f16, $f4, $f15 \n\t" "madd.s $f14, $f14, $f5, $f13 \n\t" "swc1 $f8, 8(%[out]) \n\t" "lwc1 $f6, 16(%[in]) \n\t" "mul.s $f9, $f3, $f15 \n\t" "mul.s $f7, $f2, $f16 \n\t" "msub.s $f7, $f7, %[gain], $f6 \n\t" "sub.s $f7, $f7, $f9 \n\t" "madd.s $f8, $f7, $f4, $f16 \n\t" "madd.s $f8, $f8, $f5, $f15 \n\t" "swc1 $f14, 12(%[out]) \n\t" "lwc1 $f11, 20(%[in]) \n\t" "mul.s $f12, $f3, $f16 \n\t" "mul.s $f13, $f2, $f7 \n\t" "msub.s $f13, $f13, %[gain], $f11 \n\t" "sub.s $f13, $f13, $f12 \n\t" "madd.s $f14, $f13, $f4, $f7 \n\t" "madd.s $f14, $f14, $f5, $f16 \n\t" "swc1 $f8, 16(%[out]) \n\t" "lwc1 $f6, 24(%[in]) \n\t" "mul.s $f9, $f3, $f7 \n\t" "mul.s $f15, $f2, $f13 \n\t" "msub.s $f15, $f15, %[gain], $f6 \n\t" "sub.s $f1, $f15, $f9 \n\t" "madd.s $f8, $f1, $f4, $f13 \n\t" "madd.s $f8, $f8, $f5, $f7 \n\t" "swc1 $f14, 20(%[out]) \n\t" "lwc1 $f11, 28(%[in]) \n\t" "mul.s $f12, $f3, $f13 \n\t" "mul.s $f16, $f2, $f1 \n\t" "msub.s $f16, $f16, %[gain], $f11 \n\t" "sub.s $f0, $f16, $f12 \n\t" "madd.s $f14, $f0, $f4, $f1 \n\t" "madd.s $f14, $f14, $f5, $f13 \n\t" "swc1 $f8, 24(%[out]) \n\t" PTR_ADDIU "%[out], 32 \n\t" PTR_ADDIU "%[in], 32 \n\t" "addiu %[n], -8 \n\t" "swc1 $f14, -4(%[out]) \n\t" "bnez %[n], ff_acelp_apply_order_2_transfer_function_madd%= \n\t" "swc1 $f1, 4(%[mem]) \n\t" "swc1 $f0, 0(%[mem]) \n\t" "ff_acelp_apply_order_2_transfer_function_end%=: \n\t" : [out] "+r" (out), [in] "+r" (in), [gain] "+f" (gain), [n] "+r" (n), [mem] "+r" (mem) : [zero_coeffs] "r" (zero_coeffs), [pole_coeffs] "r" (pole_coeffs) : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", "$f8", "$f9", "$f10", "$f11", "$f12", "$f13", "$f14", "$f15", "$f16", "memory" ); } #endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */ #endif /* HAVE_INLINE_ASM */ void ff_acelp_filter_init_mips(ACELPFContext *c) { #if HAVE_INLINE_ASM #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6 c->acelp_interpolatef = ff_acelp_interpolatef_mips; c->acelp_apply_order_2_transfer_function = ff_acelp_apply_order_2_transfer_function_mips; #endif #endif }