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/*
* Copyright 2003-2016 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.
*/
#include "config.h"
#include "config/Param.hxx"
#include "config/ConfigGlobal.hxx"
#include "fs/Path.hxx"
#include "AudioParser.hxx"
#include "AudioFormat.hxx"
#include "filter/FilterPlugin.hxx"
#include "filter/FilterInternal.hxx"
#include "pcm/Volume.hxx"
#include "mixer/MixerControl.hxx"
#include "util/Error.hxx"
#include "util/ConstBuffer.hxx"
#include "system/FatalError.hxx"
#include "Log.hxx"
#include <memory>
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
void
mixer_set_volume(gcc_unused Mixer *mixer,
gcc_unused unsigned volume)
{
}
static PreparedFilter *
load_filter(const char *name)
{
const auto *param = config_find_block(ConfigBlockOption::AUDIO_FILTER,
"name", name);
if (param == NULL) {
fprintf(stderr, "No such configured filter: %s\n", name);
return nullptr;
}
return filter_configured_new(*param);
}
int main(int argc, char **argv)
try {
struct audio_format_string af_string;
char buffer[4096];
if (argc < 3 || argc > 4) {
fprintf(stderr, "Usage: run_filter CONFIG NAME [FORMAT] <IN\n");
return EXIT_FAILURE;
}
const Path config_path = Path::FromFS(argv[1]);
AudioFormat audio_format(44100, SampleFormat::S16, 2);
/* read configuration file (mpd.conf) */
config_global_init();
ReadConfigFile(config_path);
/* parse the audio format */
if (argc > 3) {
Error error;
if (!audio_format_parse(audio_format, argv[3], false, error)) {
LogError(error, "Failed to parse audio format");
return EXIT_FAILURE;
}
}
/* initialize the filter */
std::unique_ptr<PreparedFilter> prepared_filter(load_filter(argv[2]));
if (!prepared_filter)
return EXIT_FAILURE;
/* open the filter */
std::unique_ptr<Filter> filter(prepared_filter->Open(audio_format));
const AudioFormat out_audio_format = filter->GetOutAudioFormat();
fprintf(stderr, "audio_format=%s\n",
audio_format_to_string(out_audio_format, &af_string));
/* play */
while (true) {
ssize_t nbytes;
nbytes = read(0, buffer, sizeof(buffer));
if (nbytes <= 0)
break;
auto dest = filter->FilterPCM({(const void *)buffer, (size_t)nbytes});
nbytes = write(1, dest.data, dest.size);
if (nbytes < 0) {
fprintf(stderr, "Failed to write: %s\n",
strerror(errno));
return 1;
}
}
/* cleanup and exit */
config_global_finish();
return EXIT_SUCCESS;
} catch (const std::exception &e) {
LogError(e);
return EXIT_FAILURE;
}
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