GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/g722dsp.c Lines: 30 30 100.0 %
Date: 2021-04-20 15:25:36 Branches: 0 0 - %

Line Branch Exec Source
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/*
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 * Copyright (c) 2015 Peter Meerwald <pmeerw@pmeerw.net>
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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 "g722dsp.h"
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#include "mathops.h"
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/*
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 * quadrature mirror filter (QMF) coefficients (ITU-T G.722 Table 11) inlined
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 * in code below: 3, -11, 12, 32, -210, 951, 3876, -805, 362, -156, 53, -11
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 */
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static void g722_apply_qmf(const int16_t *prev_samples, int xout[2])
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{
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    xout[1] = MUL16(*prev_samples++, 3);
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    xout[0] = MUL16(*prev_samples++, -11);
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    MAC16(xout[1], *prev_samples++, -11);
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    MAC16(xout[0], *prev_samples++, 53);
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    MAC16(xout[1], *prev_samples++, 12);
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    MAC16(xout[0], *prev_samples++, -156);
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    MAC16(xout[1], *prev_samples++, 32);
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    MAC16(xout[0], *prev_samples++, 362);
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    MAC16(xout[1], *prev_samples++, -210);
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    MAC16(xout[0], *prev_samples++, -805);
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    MAC16(xout[1], *prev_samples++, 951);
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    MAC16(xout[0], *prev_samples++, 3876);
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    MAC16(xout[1], *prev_samples++, 3876);
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    MAC16(xout[0], *prev_samples++, 951);
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    MAC16(xout[1], *prev_samples++, -805);
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    MAC16(xout[0], *prev_samples++, -210);
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    MAC16(xout[1], *prev_samples++, 362);
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    MAC16(xout[0], *prev_samples++, 32);
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    MAC16(xout[1], *prev_samples++, -156);
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    MAC16(xout[0], *prev_samples++, 12);
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    MAC16(xout[1], *prev_samples++, 53);
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    MAC16(xout[0], *prev_samples++, -11);
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    MAC16(xout[1], *prev_samples++, -11);
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    MAC16(xout[0], *prev_samples++, 3);
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}
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av_cold void ff_g722dsp_init(G722DSPContext *c)
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{
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    c->apply_qmf = g722_apply_qmf;
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    if (ARCH_ARM)
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        ff_g722dsp_init_arm(c);
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    if (ARCH_X86)
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        ff_g722dsp_init_x86(c);
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}