FFmpeg: libavcodec/mips/amrwbdec

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  * This file is part of FFmpeg.
00032  *
00033  * FFmpeg is free software; you can redistribute it and/or
00034  * modify it under the terms of the GNU Lesser General Public
00035  * License as published by the Free Software Foundation; either
00036  * version 2.1 of the License, or (at your option) any later version.
00037  *
00038  * FFmpeg is distributed in the hope that it will be useful,
00039  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00040  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00041  * Lesser General Public License for more details.
00042  *
00043  * You should have received a copy of the GNU Lesser General Public
00044  * License along with FFmpeg; if not, write to the Free Software
00045  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00046  */
00047 
00052 #include "libavutil/avutil.h"
00053 #include "libavcodec/amrwbdata.h"
00054 #include "amrwbdec_mips.h"
00055 
00056 void hb_fir_filter_mips(float *out, const float fir_coef[HB_FIR_SIZE + 1],
00057                           float mem[HB_FIR_SIZE], const float *in)
00058 {
00059     int i;
00060     float data[AMRWB_SFR_SIZE_16k + HB_FIR_SIZE]; // past and current samples
00061 
00062     memcpy(data, mem, HB_FIR_SIZE * sizeof(float));
00063     memcpy(data + HB_FIR_SIZE, in, AMRWB_SFR_SIZE_16k * sizeof(float));
00064 
00065     for (i = 0; i < AMRWB_SFR_SIZE_16k; i++) {
00066         float output;
00067         float * p_data = (data+i);
00068 
00073         __asm__ volatile(
00074             "mtc1       $zero,     %[output]                      \n\t"
00075             "lwc1       $f0,       0(%[p_data])                   \n\t"
00076             "lwc1       $f1,       0(%[fir_coef])                 \n\t"
00077             "lwc1       $f2,       4(%[p_data])                   \n\t"
00078             "madd.s     %[output], %[output],       $f0, $f1      \n\t"
00079             "lwc1       $f3,       4(%[fir_coef])                 \n\t"
00080             "lwc1       $f4,       8(%[p_data])                   \n\t"
00081             "madd.s     %[output], %[output],       $f2, $f3      \n\t"
00082             "lwc1       $f5,       8(%[fir_coef])                 \n\t"
00083 
00084             "lwc1       $f0,       12(%[p_data])                  \n\t"
00085             "lwc1       $f1,       12(%[fir_coef])                \n\t"
00086             "madd.s     %[output], %[output],       $f4, $f5      \n\t"
00087             "lwc1       $f2,       16(%[p_data])                  \n\t"
00088             "madd.s     %[output], %[output],       $f0, $f1      \n\t"
00089             "lwc1       $f3,       16(%[fir_coef])                \n\t"
00090             "lwc1       $f4,       20(%[p_data])                  \n\t"
00091             "lwc1       $f5,       20(%[fir_coef])                \n\t"
00092             "madd.s     %[output], %[output],       $f2, $f3      \n\t"
00093 
00094             "lwc1       $f0,       24(%[p_data])                  \n\t"
00095             "lwc1       $f1,       24(%[fir_coef])                \n\t"
00096             "lwc1       $f2,       28(%[p_data])                  \n\t"
00097             "madd.s     %[output], %[output],       $f4, $f5      \n\t"
00098             "lwc1       $f3,       28(%[fir_coef])                \n\t"
00099             "madd.s     %[output], %[output],       $f0, $f1      \n\t"
00100             "lwc1       $f4,       32(%[p_data])                  \n\t"
00101             "madd.s     %[output], %[output],       $f2, $f3      \n\t"
00102             "lwc1       $f5,       32(%[fir_coef])                \n\t"
00103             "madd.s     %[output], %[output],       $f4, $f5      \n\t"
00104 
00105             "lwc1       $f0,       36(%[p_data])                  \n\t"
00106             "lwc1       $f1,       36(%[fir_coef])                \n\t"
00107             "lwc1       $f2,       40(%[p_data])                  \n\t"
00108             "lwc1       $f3,       40(%[fir_coef])                \n\t"
00109             "madd.s     %[output], %[output],       $f0, $f1      \n\t"
00110             "lwc1       $f4,       44(%[p_data])                  \n\t"
00111             "lwc1       $f5,       44(%[fir_coef])                \n\t"
00112             "madd.s     %[output], %[output],       $f2, $f3      \n\t"
00113 
00114             "lwc1       $f0,       48(%[p_data])                  \n\t"
00115             "lwc1       $f1,       48(%[fir_coef])                \n\t"
00116             "lwc1       $f2,       52(%[p_data])                  \n\t"
00117             "madd.s     %[output], %[output],       $f4, $f5      \n\t"
00118             "lwc1       $f3,       52(%[fir_coef])                \n\t"
00119             "lwc1       $f4,       56(%[p_data])                  \n\t"
00120             "madd.s     %[output], %[output],       $f0, $f1      \n\t"
00121             "lwc1       $f5,       56(%[fir_coef])                \n\t"
00122             "madd.s     %[output], %[output],       $f2, $f3      \n\t"
00123 
00124             "lwc1       $f0,       60(%[p_data])                  \n\t"
00125             "lwc1       $f1,       60(%[fir_coef])                \n\t"
00126             "lwc1       $f2,       64(%[p_data])                  \n\t"
00127             "madd.s     %[output], %[output],       $f4, $f5      \n\t"
00128             "lwc1       $f3,       64(%[fir_coef])                \n\t"
00129             "madd.s     %[output], %[output],       $f0, $f1      \n\t"
00130             "lwc1       $f4,       68(%[p_data])                  \n\t"
00131             "madd.s     %[output], %[output],       $f2, $f3      \n\t"
00132             "lwc1       $f5,       68(%[fir_coef])                \n\t"
00133             "madd.s     %[output], %[output],       $f4, $f5      \n\t"
00134 
00135             "lwc1       $f0,       72(%[p_data])                  \n\t"
00136             "lwc1       $f1,       72(%[fir_coef])                \n\t"
00137             "lwc1       $f2,       76(%[p_data])                  \n\t"
00138             "lwc1       $f3,       76(%[fir_coef])                \n\t"
00139             "madd.s     %[output], %[output],       $f0, $f1      \n\t"
00140             "lwc1       $f4,       80(%[p_data])                  \n\t"
00141             "lwc1       $f5,       80(%[fir_coef])                \n\t"
00142             "madd.s     %[output], %[output],       $f2, $f3      \n\t"
00143 
00144             "lwc1       $f0,       84(%[p_data])                  \n\t"
00145             "lwc1       $f1,       84(%[fir_coef])                \n\t"
00146             "lwc1       $f2,       88(%[p_data])                  \n\t"
00147             "madd.s     %[output], %[output],       $f4, $f5      \n\t"
00148             "lwc1       $f3,       88(%[fir_coef])                \n\t"
00149             "lwc1       $f4,       92(%[p_data])                  \n\t"
00150             "madd.s     %[output], %[output],       $f0, $f1      \n\t"
00151             "lwc1       $f5,       92(%[fir_coef])                \n\t"
00152             "madd.s     %[output], %[output],       $f2, $f3      \n\t"
00153 
00154             "lwc1       $f0,       96(%[p_data])                  \n\t"
00155             "lwc1       $f1,       96(%[fir_coef])                \n\t"
00156             "lwc1       $f2,       100(%[p_data])                 \n\t"
00157             "madd.s     %[output], %[output],       $f4, $f5      \n\t"
00158             "lwc1       $f3,       100(%[fir_coef])               \n\t"
00159             "lwc1       $f4,       104(%[p_data])                 \n\t"
00160             "madd.s     %[output], %[output],       $f0, $f1      \n\t"
00161             "lwc1       $f5,       104(%[fir_coef])               \n\t"
00162             "madd.s     %[output], %[output],       $f2, $f3      \n\t"
00163 
00164             "lwc1       $f0,       108(%[p_data])                 \n\t"
00165             "lwc1       $f1,       108(%[fir_coef])               \n\t"
00166             "madd.s     %[output], %[output],       $f4, $f5      \n\t"
00167             "lwc1       $f2,       112(%[p_data])                 \n\t"
00168             "lwc1       $f3,       112(%[fir_coef])               \n\t"
00169             "madd.s     %[output], %[output],       $f0, $f1      \n\t"
00170             "lwc1       $f4,       116(%[p_data])                 \n\t"
00171             "lwc1       $f5,       116(%[fir_coef])               \n\t"
00172             "lwc1       $f0,       120(%[p_data])                 \n\t"
00173             "madd.s     %[output], %[output],       $f2, $f3      \n\t"
00174             "lwc1       $f1,       120(%[fir_coef])               \n\t"
00175             "madd.s     %[output], %[output],       $f4, $f5      \n\t"
00176             "madd.s     %[output], %[output],       $f0, $f1      \n\t"
00177 
00178             : [output]"=&f"(output)
00179             : [fir_coef]"r"(fir_coef), [p_data]"r"(p_data)
00180             : "$f0", "$f1", "$f2", "$f3", "$f4", "$f5"
00181         );
00182         out[i] = output;
00183     }
00184     memcpy(mem, data + AMRWB_SFR_SIZE_16k, HB_FIR_SIZE * sizeof(float));
00185 }
libavcodec/mips/amrwbdec_mips.c
