175 lines
4.4 KiB
C++
175 lines
4.4 KiB
C++
/*
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* Copyright 2003-2016 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 "output/Internal.hxx"
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#include "output/OutputPlugin.hxx"
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#include "config/Param.hxx"
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#include "config/ConfigGlobal.hxx"
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#include "config/ConfigOption.hxx"
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#include "Idle.hxx"
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#include "Main.hxx"
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#include "event/Loop.hxx"
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#include "ScopeIOThread.hxx"
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#include "fs/Path.hxx"
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#include "AudioParser.hxx"
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#include "ReplayGainConfig.hxx"
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#include "pcm/PcmConvert.hxx"
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#include "filter/FilterRegistry.hxx"
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#include "player/Control.hxx"
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#include "util/RuntimeError.hxx"
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#include "util/ScopeExit.hxx"
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#include "Log.hxx"
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#include <assert.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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const FilterPlugin *
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filter_plugin_by_name(gcc_unused const char *name)
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{
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assert(false);
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return NULL;
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}
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PlayerControl::PlayerControl(PlayerListener &_listener,
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MultipleOutputs &_outputs,
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unsigned _buffer_chunks,
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unsigned _buffered_before_play,
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AudioFormat _configured_audio_format,
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const ReplayGainConfig &_replay_gain_config)
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:listener(_listener), outputs(_outputs),
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buffer_chunks(_buffer_chunks),
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buffered_before_play(_buffered_before_play),
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configured_audio_format(_configured_audio_format),
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replay_gain_config(_replay_gain_config) {}
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PlayerControl::~PlayerControl() {}
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static AudioOutput *
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load_audio_output(EventLoop &event_loop, const char *name)
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{
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const auto *param = config_find_block(ConfigBlockOption::AUDIO_OUTPUT,
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"name", name);
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if (param == NULL)
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throw FormatRuntimeError("No such configured audio output: %s\n",
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name);
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static struct PlayerControl dummy_player_control(*(PlayerListener *)nullptr,
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*(MultipleOutputs *)nullptr,
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32, 4,
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AudioFormat::Undefined(),
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ReplayGainConfig());
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return audio_output_new(event_loop, ReplayGainConfig(), *param,
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*(MixerListener *)nullptr,
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dummy_player_control);
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}
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static void
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run_output(AudioOutput *ao, AudioFormat audio_format)
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{
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/* open the audio output */
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ao_plugin_enable(ao);
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AtScopeExit(ao) { ao_plugin_disable(ao); };
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ao_plugin_open(ao, audio_format);
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AtScopeExit(ao) { ao_plugin_close(ao); };
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struct audio_format_string af_string;
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fprintf(stderr, "audio_format=%s\n",
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audio_format_to_string(audio_format, &af_string));
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size_t frame_size = audio_format.GetFrameSize();
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/* play */
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size_t length = 0;
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char buffer[4096];
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while (true) {
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if (length < sizeof(buffer)) {
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ssize_t nbytes = read(0, buffer + length,
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sizeof(buffer) - length);
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if (nbytes <= 0)
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break;
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length += (size_t)nbytes;
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}
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size_t play_length = (length / frame_size) * frame_size;
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if (play_length > 0) {
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size_t consumed = ao_plugin_play(ao,
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buffer, play_length);
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assert(consumed <= length);
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assert(consumed % frame_size == 0);
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length -= consumed;
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memmove(buffer, buffer + consumed, length);
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}
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}
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}
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int main(int argc, char **argv)
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try {
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if (argc < 3 || argc > 4) {
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fprintf(stderr, "Usage: run_output 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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/* read configuration file (mpd.conf) */
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config_global_init();
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ReadConfigFile(config_path);
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EventLoop event_loop;
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const ScopeIOThread io_thread;
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/* initialize the audio output */
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AudioOutput *ao = load_audio_output(event_loop, argv[2]);
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/* parse the audio format */
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if (argc > 3)
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audio_format = ParseAudioFormat(argv[3], false);
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/* do it */
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run_output(ao, audio_format);
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/* cleanup and exit */
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audio_output_free(ao);
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config_global_finish();
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return EXIT_SUCCESS;
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} catch (const std::exception &e) {
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LogError(e);
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return EXIT_FAILURE;
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}
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