/* * 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 CELP-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/celp_filters.c */ #include "config.h" #include "libavutil/attributes.h" #include "libavutil/common.h" #include "libavcodec/celp_filters.h" #include "libavutil/mips/asmdefs.h" #if HAVE_INLINE_ASM #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6 static void ff_celp_lp_synthesis_filterf_mips(float *out, const float *filter_coeffs, const float* in, int buffer_length, int filter_length) { int i,n; float out0, out1, out2, out3; float old_out0, old_out1, old_out2, old_out3; float a,b,c; const float *p_filter_coeffs; float *p_out; a = filter_coeffs[0]; b = filter_coeffs[1]; c = filter_coeffs[2]; b -= filter_coeffs[0] * filter_coeffs[0]; c -= filter_coeffs[1] * filter_coeffs[0]; c -= filter_coeffs[0] * b; old_out0 = out[-4]; old_out1 = out[-3]; old_out2 = out[-2]; old_out3 = out[-1]; for (n = 0; n <= buffer_length - 4; n+=4) { p_filter_coeffs = filter_coeffs; p_out = out; out0 = in[0]; out1 = in[1]; out2 = in[2]; out3 = in[3]; __asm__ volatile( "lwc1 $f2, 8(%[filter_coeffs]) \n\t" "lwc1 $f1, 4(%[filter_coeffs]) \n\t" "lwc1 $f0, 0(%[filter_coeffs]) \n\t" "nmsub.s %[out0], %[out0], $f2, %[old_out1] \n\t" "nmsub.s %[out1], %[out1], $f2, %[old_out2] \n\t" "nmsub.s %[out2], %[out2], $f2, %[old_out3] \n\t" "lwc1 $f3, 12(%[filter_coeffs]) \n\t" "nmsub.s %[out0], %[out0], $f1, %[old_out2] \n\t" "nmsub.s %[out1], %[out1], $f1, %[old_out3] \n\t" "nmsub.s %[out2], %[out2], $f3, %[old_out2] \n\t" "nmsub.s %[out0], %[out0], $f0, %[old_out3] \n\t" "nmsub.s %[out3], %[out3], $f3, %[old_out3] \n\t" "nmsub.s %[out1], %[out1], $f3, %[old_out1] \n\t" "nmsub.s %[out0], %[out0], $f3, %[old_out0] \n\t" : [out0]"+f"(out0), [out1]"+f"(out1), [out2]"+f"(out2), [out3]"+f"(out3) : [old_out0]"f"(old_out0), [old_out1]"f"(old_out1), [old_out2]"f"(old_out2), [old_out3]"f"(old_out3), [filter_coeffs]"r"(filter_coeffs) : "$f0", "$f1", "$f2", "$f3", "$f4", "memory" ); for (i = 5; i <= filter_length; i += 2) { __asm__ volatile( "lwc1 %[old_out3], -20(%[p_out]) \n\t" "lwc1 $f5, 16(%[p_filter_coeffs]) \n\t" PTR_ADDIU "%[p_out], -8 \n\t" PTR_ADDIU "%[p_filter_coeffs], 8 \n\t" "nmsub.s %[out1], %[out1], $f5, %[old_out0] \n\t" "nmsub.s %[out3], %[out3], $f5, %[old_out2] \n\t" "lwc1 $f4, 12(%[p_filter_coeffs]) \n\t" "lwc1 %[old_out2], -16(%[p_out]) \n\t" "nmsub.s %[out0], %[out0], $f5, %[old_out3] \n\t" "nmsub.s %[out2], %[out2], $f5, %[old_out1] \n\t" "nmsub.s %[out1], %[out1], $f4, %[old_out3] \n\t" "nmsub.s %[out3], %[out3], $f4, %[old_out1] \n\t" "mov.s %[old_out1], %[old_out3] \n\t" "nmsub.s %[out0], %[out0], $f4, %[old_out2] \n\t" "nmsub.s %[out2], %[out2], $f4, %[old_out0] \n\t" : [out0]"+f"(out0), [out1]"+f"(out1), [out2]"+f"(out2), [out3]"+f"(out3), [old_out0]"+f"(old_out0), [old_out1]"+f"(old_out1), [old_out2]"+f"(old_out2), [old_out3]"+f"(old_out3),[p_filter_coeffs]"+r"(p_filter_coeffs), [p_out]"+r"(p_out) : : "$f4", "$f5", "memory" ); FFSWAP(float, old_out0, old_out2); } __asm__ volatile( "nmsub.s %[out3], %[out3], %[a], %[out2] \n\t" "nmsub.s %[out2], %[out2], %[a], %[out1] \n\t" "nmsub.s %[out3], %[out3], %[b], %[out1] \n\t" "nmsub.s %[out1], %[out1], %[a], %[out0] \n\t" "nmsub.s %[out2], %[out2], %[b], %[out0] \n\t" "nmsub.s %[out3], %[out3], %[c], %[out0] \n\t" : [out0]"+f"(out0), [out1]"+f"(out1), [out2]"+f"(out2), [out3]"+f"(out3) : [a]"f"(a), [b]"f"(b), [c]"f"(c) ); out[0] = out0; out[1] = out1; out[2] = out2; out[3] = out3; old_out0 = out0; old_out1 = out1; old_out2 = out2; old_out3 = out3; out += 4; in += 4; } out -= n; in -= n; for (; n < buffer_length; n++) { float out_val, out_val_i, fc_val; p_filter_coeffs = filter_coeffs; p_out = &out[n]; out_val = in[n]; for (i = 1; i <= filter_length; i++) { __asm__ volatile( "lwc1 %[fc_val], 0(%[p_filter_coeffs]) \n\t" "lwc1 %[out_val_i], -4(%[p_out]) \n\t" PTR_ADDIU "%[p_filter_coeffs], 4 \n\t" PTR_ADDIU "%[p_out], -4 \n\t" "nmsub.s %[out_val], %[out_val], %[fc_val], %[out_val_i] \n\t" : [fc_val]"=&f"(fc_val), [out_val]"+f"(out_val), [out_val_i]"=&f"(out_val_i), [p_out]"+r"(p_out), [p_filter_coeffs]"+r"(p_filter_coeffs) : : "memory" ); } out[n] = out_val; } } static void ff_celp_lp_zero_synthesis_filterf_mips(float *out, const float *filter_coeffs, const float *in, int buffer_length, int filter_length) { int i,n; float sum_out8, sum_out7, sum_out6, sum_out5, sum_out4, fc_val; float sum_out3, sum_out2, sum_out1; const float *p_filter_coeffs, *p_in; for (n = 0; n < buffer_length; n+=8) { p_in = &in[n]; p_filter_coeffs = filter_coeffs; sum_out8 = in[n+7]; sum_out7 = in[n+6]; sum_out6 = in[n+5]; sum_out5 = in[n+4]; sum_out4 = in[n+3]; sum_out3 = in[n+2]; sum_out2 = in[n+1]; sum_out1 = in[n]; i = filter_length; /* i is always greater than 0 * outer loop is unrolled eight times so there is less memory access * inner loop is unrolled two times */ __asm__ volatile( "filt_lp_inner%=: \n\t" "lwc1 %[fc_val], 0(%[p_filter_coeffs]) \n\t" "lwc1 $f7, 6*4(%[p_in]) \n\t" "lwc1 $f6, 5*4(%[p_in]) \n\t" "lwc1 $f5, 4*4(%[p_in]) \n\t" "lwc1 $f4, 3*4(%[p_in]) \n\t" "lwc1 $f3, 2*4(%[p_in]) \n\t" "lwc1 $f2, 4(%[p_in]) \n\t" "lwc1 $f1, 0(%[p_in]) \n\t" "lwc1 $f0, -4(%[p_in]) \n\t" "addiu %[i], -2 \n\t" "madd.s %[sum_out8], %[sum_out8], %[fc_val], $f7 \n\t" "madd.s %[sum_out7], %[sum_out7], %[fc_val], $f6 \n\t" "madd.s %[sum_out6], %[sum_out6], %[fc_val], $f5 \n\t" "madd.s %[sum_out5], %[sum_out5], %[fc_val], $f4 \n\t" "madd.s %[sum_out4], %[sum_out4], %[fc_val], $f3 \n\t" "madd.s %[sum_out3], %[sum_out3], %[fc_val], $f2 \n\t" "madd.s %[sum_out2], %[sum_out2], %[fc_val], $f1 \n\t" "madd.s %[sum_out1], %[sum_out1], %[fc_val], $f0 \n\t" "lwc1 %[fc_val], 4(%[p_filter_coeffs]) \n\t" "lwc1 $f7, -8(%[p_in]) \n\t" PTR_ADDIU "%[p_filter_coeffs], 8 \n\t" PTR_ADDIU "%[p_in], -8 \n\t" "madd.s %[sum_out8], %[sum_out8], %[fc_val], $f6 \n\t" "madd.s %[sum_out7], %[sum_out7], %[fc_val], $f5 \n\t" "madd.s %[sum_out6], %[sum_out6], %[fc_val], $f4 \n\t" "madd.s %[sum_out5], %[sum_out5], %[fc_val], $f3 \n\t" "madd.s %[sum_out4], %[sum_out4], %[fc_val], $f2 \n\t" "madd.s %[sum_out3], %[sum_out3], %[fc_val], $f1 \n\t" "madd.s %[sum_out2], %[sum_out2], %[fc_val], $f0 \n\t" "madd.s %[sum_out1], %[sum_out1], %[fc_val], $f7 \n\t" "bgtz %[i], filt_lp_inner%= \n\t" : [sum_out8]"+f"(sum_out8), [sum_out7]"+f"(sum_out7), [sum_out6]"+f"(sum_out6), [sum_out5]"+f"(sum_out5), [sum_out4]"+f"(sum_out4), [sum_out3]"+f"(sum_out3), [sum_out2]"+f"(sum_out2), [sum_out1]"+f"(sum_out1), [fc_val]"=&f"(fc_val), [p_filter_coeffs]"+r"(p_filter_coeffs), [p_in]"+r"(p_in), [i]"+r"(i) : : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5", "$f6", "$f7", "memory" ); out[n+7] = sum_out8; out[n+6] = sum_out7; out[n+5] = sum_out6; out[n+4] = sum_out5; out[n+3] = sum_out4; out[n+2] = sum_out3; out[n+1] = sum_out2; out[n] = sum_out1; } } #endif /* !HAVE_MIPS32R6 && !HAVE_MIPS64R6 */ #endif /* HAVE_INLINE_ASM */ void ff_celp_filter_init_mips(CELPFContext *c) { #if HAVE_INLINE_ASM #if !HAVE_MIPS32R6 && !HAVE_MIPS64R6 c->celp_lp_synthesis_filterf = ff_celp_lp_synthesis_filterf_mips; c->celp_lp_zero_synthesis_filterf = ff_celp_lp_zero_synthesis_filterf_mips; #endif #endif }