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/*
* Copyright (C) 2003-2014 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/ConfigData.hxx"
#include "config/ConfigGlobal.hxx"
#include "fs/Path.hxx"
#include "AudioParser.hxx"
#include "AudioFormat.hxx"
#include "FilterPlugin.hxx"
#include "FilterInternal.hxx"
#include "pcm/Volume.hxx"
#include "MixerControl.hxx"
#include "stdbin.h"
#include "util/Error.hxx"
#include "system/FatalError.hxx"
#include "Log.hxx"
#include <glib.h>
#include <assert.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
bool
mixer_set_volume(gcc_unused Mixer *mixer,
gcc_unused unsigned volume, gcc_unused Error &error)
{
return true;
}
static const struct config_param *
find_named_config_block(ConfigOption option, const char *name)
{
const struct config_param *param = NULL;
while ((param = config_get_next_param(option, param)) != NULL) {
const char *current_name = param->GetBlockValue("name");
if (current_name != NULL && strcmp(current_name, name) == 0)
return param;
}
return NULL;
}
static Filter *
load_filter(const char *name)
{
const struct config_param *param;
param = find_named_config_block(CONF_AUDIO_FILTER, name);
if (param == NULL) {
fprintf(stderr, "No such configured filter: %s\n", name);
return nullptr;
}
Error error;
Filter *filter = filter_configured_new(*param, error);
if (filter == NULL) {
LogError(error, "Failed to load filter");
return NULL;
}
return filter;
}
int main(int argc, char **argv)
{
struct audio_format_string af_string;
Error error2;
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);
/* initialize GLib */
#if !GLIB_CHECK_VERSION(2,32,0)
g_thread_init(NULL);
#endif
/* read configuration file (mpd.conf) */
config_global_init();
if (!ReadConfigFile(config_path, error2))
FatalError(error2);
/* 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 */
Filter *filter = load_filter(argv[2]);
if (filter == NULL)
return EXIT_FAILURE;
/* open the filter */
Error error;
const AudioFormat out_audio_format = filter->Open(audio_format, error);
if (!out_audio_format.IsDefined()) {
LogError(error, "Failed to open filter");
delete filter;
return EXIT_FAILURE;
}
fprintf(stderr, "audio_format=%s\n",
audio_format_to_string(out_audio_format, &af_string));
/* play */
while (true) {
ssize_t nbytes;
size_t length;
const void *dest;
nbytes = read(0, buffer, sizeof(buffer));
if (nbytes <= 0)
break;
dest = filter->FilterPCM(buffer, (size_t)nbytes,
&length, error);
if (dest == NULL) {
LogError(error, "Filter failed");
filter->Close();
delete filter;
return EXIT_FAILURE;
}
nbytes = write(1, dest, length);
if (nbytes < 0) {
fprintf(stderr, "Failed to write: %s\n",
strerror(errno));
filter->Close();
delete filter;
return 1;
}
}
/* cleanup and exit */
filter->Close();
delete filter;
config_global_finish();
return 0;
}
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