66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
/*
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* Copyright 2003-2017 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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* This program is a command line interface to MPD's software volume
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* library (pcm_volume.c).
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*
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*/
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#include "config.h"
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#include "pcm/Volume.hxx"
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#include "AudioParser.hxx"
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#include "AudioFormat.hxx"
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#include "util/ConstBuffer.hxx"
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#include "util/PrintException.hxx"
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#include <stdio.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <unistd.h>
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int
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main(int argc, char **argv)
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try {
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static char buffer[4096];
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ssize_t nbytes;
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if (argc > 2) {
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fprintf(stderr, "Usage: software_volume [FORMAT] <IN >OUT\n");
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return EXIT_FAILURE;
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}
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AudioFormat audio_format(48000, SampleFormat::S16, 2);
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if (argc > 1)
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audio_format = ParseAudioFormat(argv[1], false);
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PcmVolume pv;
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pv.Open(audio_format.format);
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while ((nbytes = read(0, buffer, sizeof(buffer))) > 0) {
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auto dest = pv.Apply({buffer, size_t(nbytes)});
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gcc_unused ssize_t ignored = write(1, dest.data, dest.size);
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}
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pv.Close();
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} catch (...) {
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PrintException(std::current_exception());
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return EXIT_FAILURE;
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}
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