71 lines
1.9 KiB
C++
71 lines
1.9 KiB
C++
/*
|
|
* Copyright (C) 2003-2013 The Music Player Daemon Project
|
|
* http://www.musicpd.org
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
/*
|
|
* This program is a command line interface to MPD's software volume
|
|
* library (pcm_volume.c).
|
|
*
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "pcm/Volume.hxx"
|
|
#include "AudioParser.hxx"
|
|
#include "AudioFormat.hxx"
|
|
#include "util/ConstBuffer.hxx"
|
|
#include "util/Error.hxx"
|
|
#include "stdbin.h"
|
|
#include "Log.hxx"
|
|
|
|
#include <stddef.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
static char buffer[4096];
|
|
ssize_t nbytes;
|
|
|
|
if (argc > 2) {
|
|
fprintf(stderr, "Usage: software_volume [FORMAT] <IN >OUT\n");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
Error error;
|
|
AudioFormat audio_format(48000, SampleFormat::S16, 2);
|
|
if (argc > 1) {
|
|
if (!audio_format_parse(audio_format, argv[1], false, error)) {
|
|
LogError(error, "Failed to parse audio format");
|
|
return EXIT_FAILURE;
|
|
}
|
|
}
|
|
|
|
PcmVolume pv;
|
|
if (!pv.Open(audio_format.format, error)) {
|
|
fprintf(stderr, "%s\n", error.GetMessage());
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
while ((nbytes = read(0, buffer, sizeof(buffer))) > 0) {
|
|
auto dest = pv.Apply({buffer, size_t(nbytes)});
|
|
gcc_unused ssize_t ignored = write(1, dest.data, dest.size);
|
|
}
|
|
|
|
pv.Close();
|
|
}
|