185 lines
4.1 KiB
C++
185 lines
4.1 KiB
C++
/*
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* Copyright (C) 2003-2014 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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#include "config.h"
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#include "config/ConfigData.hxx"
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#include "config/ConfigGlobal.hxx"
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#include "fs/Path.hxx"
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#include "AudioParser.hxx"
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#include "AudioFormat.hxx"
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#include "filter/FilterPlugin.hxx"
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#include "filter/FilterInternal.hxx"
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#include "pcm/Volume.hxx"
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#include "mixer/MixerControl.hxx"
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#include "stdbin.h"
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#include "util/Error.hxx"
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#include "system/FatalError.hxx"
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#include "Log.hxx"
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#ifdef HAVE_GLIB
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#include <glib.h>
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#endif
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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bool
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mixer_set_volume(gcc_unused Mixer *mixer,
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gcc_unused unsigned volume, gcc_unused Error &error)
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{
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return true;
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}
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static const struct config_param *
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find_named_config_block(ConfigOption option, const char *name)
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{
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const struct config_param *param = NULL;
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while ((param = config_get_next_param(option, param)) != NULL) {
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const char *current_name = param->GetBlockValue("name");
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if (current_name != NULL && strcmp(current_name, name) == 0)
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return param;
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}
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return NULL;
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}
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static Filter *
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load_filter(const char *name)
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{
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const struct config_param *param;
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param = find_named_config_block(CONF_AUDIO_FILTER, name);
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if (param == NULL) {
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fprintf(stderr, "No such configured filter: %s\n", name);
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return nullptr;
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}
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Error error;
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Filter *filter = filter_configured_new(*param, error);
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if (filter == NULL) {
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LogError(error, "Failed to load filter");
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return NULL;
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}
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return filter;
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}
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int main(int argc, char **argv)
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{
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struct audio_format_string af_string;
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Error error2;
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char buffer[4096];
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if (argc < 3 || argc > 4) {
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fprintf(stderr, "Usage: run_filter CONFIG NAME [FORMAT] <IN\n");
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return EXIT_FAILURE;
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}
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const Path config_path = Path::FromFS(argv[1]);
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AudioFormat audio_format(44100, SampleFormat::S16, 2);
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/* initialize GLib */
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#ifdef HAVE_GLIB
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#if !GLIB_CHECK_VERSION(2,32,0)
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g_thread_init(NULL);
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#endif
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#endif
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/* read configuration file (mpd.conf) */
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config_global_init();
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if (!ReadConfigFile(config_path, error2))
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FatalError(error2);
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/* parse the audio format */
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if (argc > 3) {
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Error error;
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if (!audio_format_parse(audio_format, argv[3], false, error)) {
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LogError(error, "Failed to parse audio format");
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return EXIT_FAILURE;
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}
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}
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/* initialize the filter */
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Filter *filter = load_filter(argv[2]);
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if (filter == NULL)
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return EXIT_FAILURE;
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/* open the filter */
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Error error;
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const AudioFormat out_audio_format = filter->Open(audio_format, error);
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if (!out_audio_format.IsDefined()) {
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LogError(error, "Failed to open filter");
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delete filter;
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return EXIT_FAILURE;
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}
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fprintf(stderr, "audio_format=%s\n",
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audio_format_to_string(out_audio_format, &af_string));
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/* play */
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while (true) {
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ssize_t nbytes;
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size_t length;
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const void *dest;
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nbytes = read(0, buffer, sizeof(buffer));
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if (nbytes <= 0)
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break;
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dest = filter->FilterPCM(buffer, (size_t)nbytes,
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&length, error);
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if (dest == NULL) {
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LogError(error, "filter/Filter failed");
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filter->Close();
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delete filter;
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return EXIT_FAILURE;
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}
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nbytes = write(1, dest, length);
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if (nbytes < 0) {
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fprintf(stderr, "Failed to write: %s\n",
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strerror(errno));
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filter->Close();
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delete filter;
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return 1;
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}
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}
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/* cleanup and exit */
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filter->Close();
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delete filter;
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config_global_finish();
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return 0;
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}
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