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// SPDX-License-Identifier: GPL-2.0-or-later
// Copyright The Music Player Daemon Project
#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 "fs/NarrowPath.hxx"
#include "pcm/AudioFormat.hxx"
#include "cmdline/OptionDef.hxx"
#include "cmdline/OptionParser.hxx"
#include "util/PrintException.hxx"
#include "Log.hxx"
#include "LogBackend.hxx"
#include <cassert>
#include <stdexcept>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
struct CommandLine {
const char *decoder = nullptr;
const char *uri = nullptr;
FromNarrowPath config_path;
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 = 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] [--seek=POS] 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 {
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<uint64_t>(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->SupportsUri(c.uri)) {
try {
plugin->UriDecode(client, c.uri);
} catch (StopDecoder) {
}
} else if (plugin->file_decode != nullptr) {
try {
plugin->FileDecode(client, FromNarrowPath(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;
}
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