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-rw-r--r--libavcodec/mips/acelp_filters_mips.c210
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diff --git a/libavcodec/mips/acelp_filters_mips.c b/libavcodec/mips/acelp_filters_mips.c
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+ /*
+ * 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 "libavutil/attributes.h"
+#include "libavcodec/acelp_filters.h"
+
+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"
+ "addiu %[p_in_p], %[p_in_p], 4 \n\t"
+ "madd.s %[v],%[v], %[in_val_p],%[fc_val_p] \n\t"
+ "addiu %[p_in_m], %[p_in_m], -4 \n\t"
+ "addu %[p_filter_coeffs_p], %[p_filter_coeffs_p], %[prec] \n\t"
+ "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)
+ );
+ }
+ 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"
+ "addiu %[out], 32 \n\t"
+ "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"
+ );
+}
+
+void ff_acelp_filter_init_mips(ACELPFContext *c)
+{
+ c->acelp_interpolatef = ff_acelp_interpolatef_mips;
+ c->acelp_apply_order_2_transfer_function = ff_acelp_apply_order_2_transfer_function_mips;
+}
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