/* * Copyright 2003-2020 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 "ConfigGlue.hxx" #include "event/Thread.hxx" #include "decoder/DecoderList.hxx" #include "decoder/DecoderPlugin.hxx" #include "decoder/DecoderAPI.hxx" /* for class StopDecoder */ #include "DumpDecoderClient.hxx" #include "input/Init.hxx" #include "input/InputStream.hxx" #include "fs/Path.hxx" #include "pcm/AudioFormat.hxx" #include "util/OptionDef.hxx" #include "util/OptionParser.hxx" #include "util/PrintException.hxx" #include "Log.hxx" #include "LogBackend.hxx" #include #include #include #include #include struct CommandLine { const char *decoder = nullptr; const char *uri = nullptr; Path config_path = nullptr; bool verbose = false; SongTime seek_where{}; }; enum Option { OPTION_CONFIG, OPTION_VERBOSE, OPTION_SEEK, }; static constexpr OptionDef option_defs[] = { {"config", 0, true, "Load a MPD configuration file"}, {"verbose", 'v', false, "Verbose logging"}, {"seek", 0, true, "Seek to this position"}, }; static CommandLine ParseCommandLine(int argc, char **argv) { CommandLine c; OptionParser option_parser(option_defs, argc, argv); while (auto o = option_parser.Next()) { switch (Option(o.index)) { case OPTION_CONFIG: c.config_path = Path::FromFS(o.value); break; case OPTION_VERBOSE: c.verbose = true; break; case OPTION_SEEK: c.seek_where = SongTime::FromS(strtod(o.value, nullptr)); break; } } auto args = option_parser.GetRemaining(); if (args.size != 2) throw std::runtime_error("Usage: run_decoder [--verbose] [--config=FILE] DECODER URI"); c.decoder = args[0]; c.uri = args[1]; return c; } class GlobalInit { const ConfigData config; EventThread io_thread; const ScopeInputPluginsInit input_plugins_init; const ScopeDecoderPluginsInit decoder_plugins_init; public: explicit GlobalInit(Path config_path) :config(AutoLoadConfigFile(config_path)), input_plugins_init(config, io_thread.GetEventLoop()), decoder_plugins_init(config) { io_thread.Start(); } }; class MyDecoderClient final : public DumpDecoderClient { SongTime seek_where; unsigned sample_rate; bool seekable, seek_error = false; public: explicit MyDecoderClient(SongTime _seek_where) noexcept :seek_where(_seek_where) {} void Finish() { if (!IsInitialized()) throw "Unrecognized file"; if (seek_error) throw "Seek error"; if (seek_where != SongTime{}) { if (!seekable) throw "Not seekable"; throw "Did not seek"; } } /* virtual methods from DecoderClient */ void Ready(AudioFormat audio_format, bool _seekable, SignedSongTime duration) noexcept override { assert(!IsInitialized()); DumpDecoderClient::Ready(audio_format, _seekable, duration); sample_rate = audio_format.sample_rate; seekable = _seekable; } DecoderCommand GetCommand() noexcept override { assert(IsInitialized()); if (seek_where != SongTime{}) { if (!seekable) return DecoderCommand::STOP; return DecoderCommand::SEEK; } else if (seek_error) return DecoderCommand::STOP; else return DumpDecoderClient::GetCommand(); } void CommandFinished() noexcept override { assert(!seek_error); if (seek_where != SongTime{}) seek_where = {}; else DumpDecoderClient::CommandFinished(); } SongTime GetSeekTime() noexcept override { assert(seek_where != SongTime{}); return seek_where; } uint64_t GetSeekFrame() noexcept override { assert(seek_where != SongTime{}); return GetSeekTime().ToScale(sample_rate); } void SeekError() noexcept override { assert(seek_where != SongTime{}); seek_error = true; seek_where = {}; } }; int main(int argc, char **argv) try { const auto c = ParseCommandLine(argc, argv); SetLogThreshold(c.verbose ? LogLevel::DEBUG : LogLevel::INFO); const GlobalInit init(c.config_path); const DecoderPlugin *plugin = decoder_plugin_from_name(c.decoder); if (plugin == nullptr) { fprintf(stderr, "No such decoder: %s\n", c.decoder); return EXIT_FAILURE; } MyDecoderClient client(c.seek_where); if (plugin->file_decode != nullptr) { try { plugin->FileDecode(client, Path::FromFS(c.uri)); } catch (StopDecoder) { } } else if (plugin->stream_decode != nullptr) { auto is = InputStream::OpenReady(c.uri, client.mutex); try { plugin->StreamDecode(client, *is); } catch (StopDecoder) { } } else { fprintf(stderr, "Decoder plugin is not usable\n"); return EXIT_FAILURE; } client.Finish(); return EXIT_SUCCESS; } catch (...) { PrintException(std::current_exception()); return EXIT_FAILURE; }