GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/takdsp.c Lines: 28 33 84.8 %
Date: 2020-10-23 17:01:47 Branches: 6 8 75.0 %

Line Branch Exec Source
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/*
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 * TAK decoder
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 * Copyright (c) 2015 Paul B Mahol
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "libavutil/attributes.h"
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#include "takdsp.h"
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#include "config.h"
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1
static void decorrelate_ls(int32_t *p1, int32_t *p2, int length)
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{
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    int i;
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11026
    for (i = 0; i < length; i++) {
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11025
        int32_t a = p1[i];
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        int32_t b = p2[i];
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11025
        p2[i]     = a + b;
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    }
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1
}
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static void decorrelate_sr(int32_t *p1, int32_t *p2, int length)
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{
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    int i;
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    for (i = 0; i < length; i++) {
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        int32_t a = p1[i];
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        int32_t b = p2[i];
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        p1[i]     = b - a;
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    }
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}
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static void decorrelate_sm(int32_t *p1, int32_t *p2, int length)
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{
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    int i;
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22052
    for (i = 0; i < length; i++) {
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        int32_t a = p1[i];
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        int32_t b = p2[i];
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22050
        a        -= b >> 1;
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        p1[i]     = a;
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        p2[i]     = a + b;
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    }
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2
}
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static void decorrelate_sf(int32_t *p1, int32_t *p2, int length, int dshift, int dfactor)
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{
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    int i;
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55130
    for (i = 0; i < length; i++) {
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55125
        int32_t a = p1[i];
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55125
        int32_t b = p2[i];
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55125
        b         = (unsigned)(dfactor * (b >> dshift) + 128 >> 8) << dshift;
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        p1[i]     = b - a;
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    }
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5
}
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2
av_cold void ff_takdsp_init(TAKDSPContext *c)
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{
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2
    c->decorrelate_ls = decorrelate_ls;
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2
    c->decorrelate_sr = decorrelate_sr;
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2
    c->decorrelate_sm = decorrelate_sm;
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    c->decorrelate_sf = decorrelate_sf;
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    if (ARCH_X86)
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2
        ff_takdsp_init_x86(c);
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}