LCOV - code coverage report
Current view: top level - libavutil - fixed_dsp.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 64 65 98.5 %
Date: 2017-10-20 23:03:07 Functions: 8 8 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2012
       3             :  *      MIPS Technologies, Inc., California.
       4             :  *
       5             :  * Redistribution and use in source and binary forms, with or without
       6             :  * modification, are permitted provided that the following conditions
       7             :  * are met:
       8             :  * 1. Redistributions of source code must retain the above copyright
       9             :  *    notice, this list of conditions and the following disclaimer.
      10             :  * 2. Redistributions in binary form must reproduce the above copyright
      11             :  *    notice, this list of conditions and the following disclaimer in the
      12             :  *    documentation and/or other materials provided with the distribution.
      13             :  * 3. Neither the name of the MIPS Technologies, Inc., nor the names of its
      14             :  *    contributors may be used to endorse or promote products derived from
      15             :  *    this software without specific prior written permission.
      16             :  *
      17             :  * THIS SOFTWARE IS PROVIDED BY THE MIPS TECHNOLOGIES, INC. ``AS IS'' AND
      18             :  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      19             :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      20             :  * ARE DISCLAIMED.  IN NO EVENT SHALL THE MIPS TECHNOLOGIES, INC. BE LIABLE
      21             :  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      22             :  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      23             :  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      24             :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      25             :  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      26             :  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      27             :  * SUCH DAMAGE.
      28             :  *
      29             :  * Author:  Nedeljko Babic (nedeljko.babic imgtec com)
      30             :  *
      31             :  * This file is part of FFmpeg.
      32             :  *
      33             :  * FFmpeg is free software; you can redistribute it and/or
      34             :  * modify it under the terms of the GNU Lesser General Public
      35             :  * License as published by the Free Software Foundation; either
      36             :  * version 2.1 of the License, or (at your option) any later version.
      37             :  *
      38             :  * FFmpeg is distributed in the hope that it will be useful,
      39             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      40             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      41             :  * Lesser General Public License for more details.
      42             :  *
      43             :  * You should have received a copy of the GNU Lesser General Public
      44             :  * License along with FFmpeg; if not, write to the Free Software
      45             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      46             :  */
      47             : 
      48             : #include "fixed_dsp.h"
      49             : 
      50     2398466 : static void vector_fmul_add_c(int *dst, const int *src0, const int *src1, const int *src2, int len){
      51             :     int i;
      52             :     int64_t accu;
      53             : 
      54   134740738 :     for (i=0; i<len; i++) {
      55   132342272 :         accu = (int64_t)src0[i] * src1[i];
      56   132342272 :         dst[i] = src2[i] + (int)((accu + 0x40000000) >> 31);
      57             :     }
      58     2398466 : }
      59             : 
      60      268673 : static void vector_fmul_reverse_c(int *dst, const int *src0, const int *src1, int len)
      61             : {
      62             :     int i;
      63             :     int64_t accu;
      64             : 
      65      268673 :     src1 += len-1;
      66    86860929 :     for (i=0; i<len; i++) {
      67    86592256 :         accu = (int64_t)src0[i] * src1[-i];
      68    86592256 :         dst[i] = (int)((accu+0x40000000) >> 31);
      69             :     }
      70      268673 : }
      71             : 
      72        2927 : static void vector_fmul_window_scaled_c(int16_t *dst, const int32_t *src0,
      73             :                                        const int32_t *src1, const int32_t *win,
      74             :                                        int len, uint8_t bits)
      75             : {
      76             :     int32_t s0, s1, wi, wj, i,j, round;
      77             : 
      78        2927 :     dst += len;
      79        2927 :     win += len;
      80        2927 :     src0+= len;
      81        2927 :     round = bits? 1 << (bits-1) : 0;
      82             : 
      83      377583 :     for (i=-len, j=len-1; i<0; i++, j--) {
      84      374656 :         s0 = src0[i];
      85      374656 :         s1 = src1[j];
      86      374656 :         wi = win[i];
      87      374656 :         wj = win[j];
      88      374656 :         dst[i] = av_clip_int16(((((int64_t)s0*wj - (int64_t)s1*wi + 0x40000000) >> 31) + round) >> bits);
      89      374656 :         dst[j] = av_clip_int16(((((int64_t)s0*wi + (int64_t)s1*wj + 0x40000000) >> 31) + round) >> bits);
      90             :     }
      91        2927 : }
      92             : 
      93       20615 : static void vector_fmul_window_c(int32_t *dst, const int32_t *src0,
      94             :                                        const int32_t *src1, const int32_t *win,
      95             :                                        int len)
      96             : {
      97             :     int32_t s0, s1, wi, wj, i, j;
      98             : 
      99       20615 :     dst += len;
     100       20615 :     win += len;
     101       20615 :     src0+= len;
     102             : 
     103     8948615 :     for (i=-len, j=len-1; i<0; i++, j--) {
     104     8928000 :         s0 = src0[i];
     105     8928000 :         s1 = src1[j];
     106     8928000 :         wi = win[i];
     107     8928000 :         wj = win[j];
     108     8928000 :         dst[i] = ((int64_t)s0*wj - (int64_t)s1*wi + 0x40000000) >> 31;
     109     8928000 :         dst[j] = ((int64_t)s0*wi + (int64_t)s1*wj + 0x40000000) >> 31;
     110             :     }
     111       20615 : }
     112             : 
     113      266891 : static void vector_fmul_c(int *dst, const int *src0, const int *src1, int len)
     114             : {
     115             :     int i;
     116             :     int64_t accu;
     117             : 
     118    15373579 :     for (i = 0; i < len; i++){
     119    15106688 :         accu = (int64_t)src0[i] * src1[i];
     120    15106688 :         dst[i] = (int)((accu+0x40000000) >> 31);
     121             :     }
     122      266891 : }
     123             : 
     124      137933 : static int scalarproduct_fixed_c(const int *v1, const int *v2, int len)
     125             : {
     126             :     /** p is initialized with 0x40000000 so that the proper rounding will occur
     127             :       * at the end */
     128      137933 :     int64_t p = 0x40000000;
     129             :     int i;
     130             : 
     131     3021921 :     for (i = 0; i < len; i++)
     132     2883988 :         p += (int64_t)v1[i] * v2[i];
     133             : 
     134      137933 :     return (int)(p >> 31);
     135             : }
     136             : 
     137      247860 : static void butterflies_fixed_c(int *v1, int *v2, int len)
     138             : {
     139             :     int i;
     140             : 
     141     3594040 :     for (i = 0; i < len; i++){
     142     3346180 :         int t = v1[i] - v2[i];
     143     3346180 :         v1[i] += v2[i];
     144     3346180 :         v2[i] = t;
     145             :     }
     146      247860 : }
     147             : 
     148         125 : AVFixedDSPContext * avpriv_alloc_fixed_dsp(int bit_exact)
     149             : {
     150         125 :     AVFixedDSPContext * fdsp = av_malloc(sizeof(AVFixedDSPContext));
     151             : 
     152         125 :     if (!fdsp)
     153           0 :         return NULL;
     154             : 
     155         125 :     fdsp->vector_fmul_window_scaled = vector_fmul_window_scaled_c;
     156         125 :     fdsp->vector_fmul_window = vector_fmul_window_c;
     157         125 :     fdsp->vector_fmul = vector_fmul_c;
     158         125 :     fdsp->vector_fmul_add = vector_fmul_add_c;
     159         125 :     fdsp->vector_fmul_reverse = vector_fmul_reverse_c;
     160         125 :     fdsp->butterflies_fixed = butterflies_fixed_c;
     161         125 :     fdsp->scalarproduct_fixed = scalarproduct_fixed_c;
     162             : 
     163             :     if (ARCH_X86)
     164         125 :         ff_fixed_dsp_init_x86(fdsp);
     165             : 
     166         125 :     return fdsp;
     167             : }

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