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/***
This file is part of snapcast
Copyright (C) 2014-2025 Johannes Pohl
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 3 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, see <http://www.gnu.org/licenses/>.
***/
// prototype/interface header file
#include "librespot_stream.hpp"
// local headers
#include "common/aixlog.hpp"
#include "common/snap_exception.hpp"
#include "common/utils.hpp"
#include "common/utils/file_utils.hpp"
#include "common/utils/string_utils.hpp"
// standard headers
#include <exception>
using namespace std;
namespace streamreader
{
static constexpr auto LOG_TAG = "LibrespotStream";
// https://commons.wikimedia.org/wiki/File:Spotify_logo_without_text.svg
static constexpr auto SPOTIFY_LOGO = "PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiIHN0YW5kYWxvbmU9Im5vIj8+Cjxz"
"dmcgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIiBoZWlnaHQ9IjE2OHB4IiB3aWR0"
"aD0iMTY4cHgiIHZlcnNpb249IjEuMSIgdmlld0JveD0iMCAwIDE2OCAxNjgiPgogPHBhdGggZmls"
"bD0iIzFFRDc2MCIgZD0ibTgzLjk5NiAwLjI3N2MtNDYuMjQ5IDAtODMuNzQzIDM3LjQ5My04My43"
"NDMgODMuNzQyIDAgNDYuMjUxIDM3LjQ5NCA4My43NDEgODMuNzQzIDgzLjc0MSA0Ni4yNTQgMCA4"
"My43NDQtMzcuNDkgODMuNzQ0LTgzLjc0MSAwLTQ2LjI0Ni0zNy40OS04My43MzgtODMuNzQ1LTgz"
"LjczOGwwLjAwMS0wLjAwNHptMzguNDA0IDEyMC43OGMtMS41IDIuNDYtNC43MiAzLjI0LTcuMTgg"
"MS43My0xOS42NjItMTIuMDEtNDQuNDE0LTE0LjczLTczLjU2NC04LjA3LTIuODA5IDAuNjQtNS42"
"MDktMS4xMi02LjI0OS0zLjkzLTAuNjQzLTIuODEgMS4xMS01LjYxIDMuOTI2LTYuMjUgMzEuOS03"
"LjI5MSA1OS4yNjMtNC4xNSA4MS4zMzcgOS4zNCAyLjQ2IDEuNTEgMy4yNCA0LjcyIDEuNzMgNy4x"
"OHptMTAuMjUtMjIuODA1Yy0xLjg5IDMuMDc1LTUuOTEgNC4wNDUtOC45OCAyLjE1NS0yMi41MS0x"
"My44MzktNTYuODIzLTE3Ljg0Ni04My40NDgtOS43NjQtMy40NTMgMS4wNDMtNy4xLTAuOTAzLTgu"
"MTQ4LTQuMzUtMS4wNC0zLjQ1MyAwLjkwNy03LjA5MyA0LjM1NC04LjE0MyAzMC40MTMtOS4yMjgg"
"NjguMjIyLTQuNzU4IDk0LjA3MiAxMS4xMjcgMy4wNyAxLjg5IDQuMDQgNS45MSAyLjE1IDguOTc2"
"di0wLjAwMXptMC44OC0yMy43NDRjLTI2Ljk5LTE2LjAzMS03MS41Mi0xNy41MDUtOTcuMjg5LTku"
"Njg0LTQuMTM4IDEuMjU1LTguNTE0LTEuMDgxLTkuNzY4LTUuMjE5LTEuMjU0LTQuMTQgMS4wOC04"
"LjUxMyA1LjIyMS05Ljc3MSAyOS41ODEtOC45OCA3OC43NTYtNy4yNDUgMTA5LjgzIDExLjIwMiAz"
"LjczIDIuMjA5IDQuOTUgNy4wMTYgMi43NCAxMC43MzMtMi4yIDMuNzIyLTcuMDIgNC45NDktMTAu"
"NzMgMi43Mzl6Ii8+Cjwvc3ZnPgo=";
LibrespotStream::LibrespotStream(PcmStream::Listener* pcmListener, boost::asio::io_context& ioc, const ServerSettings& server_settings, const StreamUri& uri)
: ProcessStream(pcmListener, ioc, server_settings, uri)
{
wd_timeout_sec_ = cpt::stoul(uri_.getQuery("wd_timeout", "7800")); ///< 130min
string username = uri_.getQuery("username", "");
string password = uri_.getQuery("password", "");
string cache = uri_.getQuery("cache", "");
bool disable_audio_cache = (uri_.getQuery("disable_audio_cache", "false") == "true");
string volume = uri_.getQuery("volume", "100");
string bitrate = uri_.getQuery("bitrate", "320");
string devicename = uri_.getQuery("devicename", "Snapcast");
string onevent = uri_.getQuery("onevent", "");
bool normalize = (uri_.getQuery("normalize", "false") == "true");
bool autoplay = (uri_.getQuery("autoplay", "false") == "true");
killall_ = (uri_.getQuery("killall", "false") == "true");
if (username.empty() != password.empty())
throw SnapException(R"(missing parameter "username" or "password" (must provide both, or neither))");
if (!params_.empty())
params_ += " ";
params_ += "--name \"" + devicename + "\"";
if (!username.empty() && !password.empty())
params_ += " --username \"" + username + "\" --password \"" + password + "\"";
params_ += " --bitrate " + bitrate + " --backend pipe";
if (!cache.empty())
params_ += " --cache \"" + cache + "\"";
if (disable_audio_cache)
params_ += " --disable-audio-cache";
if (!volume.empty())
params_ += " --initial-volume " + volume;
if (!onevent.empty())
params_ += " --onevent \"" + onevent + "\"";
if (normalize)
params_ += " --enable-volume-normalisation";
if (autoplay)
params_ += " --autoplay on";
params_ += " --verbose";
if (uri_.query.find("username") != uri_.query.end())
uri_.query["username"] = "xxx";
if (uri_.query.find("password") != uri_.query.end())
uri_.query["password"] = "xxx";
// LOG(INFO, LOG_TAG) << "params: " << params << "\n";
}
void LibrespotStream::initExeAndPath(const std::string& filename)
{
path_ = "";
exe_ = findExe(filename);
if (!utils::file::exists(exe_) || (exe_ == "/"))
{
exe_ = findExe("librespot");
if (!utils::file::exists(exe_))
throw SnapException("librespot not found");
}
if (exe_.find('/') != string::npos)
{
path_ = exe_.substr(0, exe_.find_last_of('/') + 1);
exe_ = exe_.substr(exe_.find_last_of('/') + 1);
}
if (killall_)
{
/// kill if it's already running
execGetOutput("killall " + exe_);
}
}
void LibrespotStream::onStderrMsg(const std::string& line)
{
try
{
// Watch stderr for 'Loading track' messages and set the stream metadata
// For more than track name check: https://github.com/plietar/librespot/issues/154
/// Watch will kill librespot if there was no message received for 130min
// 2021-05-09 09-25-48.651 [Info] (LibrespotStream) (Spotify) [2021-05-09T07:25:48Z DEBUG librespot_playback::player] command=Load(SpotifyId
// 2021-05-09 09-25-48.651 [Info] (LibrespotStream) (Spotify) [2021-05-09T07:25:48Z TRACE librespot_connect::spirc] Sending status to server
// 2021-05-09 09-25-48.746 [Info] (LibrespotStream) (Spotify) [2021-05-09T07:25:48Z WARN librespot_connect::spirc] No autoplay_uri found
// 2021-05-09 09-25-48.747 [Info] (LibrespotStream) (Spotify) [2021-05-09T07:25:48Z ERROR librespot_connect::spirc] AutoplayError: MercuryError
// 2021-05-09 09-25-48.750 [Info] (LibrespotStream) (Spotify) [2021-05-09T07:25:48Z INFO librespot_playback::player] Loading <Big Gangsta>
// Parse log level, source and message from the log line
// Format: [2021-05-09T08:31:08Z DEBUG librespot_playback::player] new Player[0]
// std::cerr << "Librespot: " << line << "\n";
std::string message = line;
utils::string::split_left(message, ' ', message);
std::string level = utils::string::trim_copy(utils::string::split_left(message, ' ', message));
std::string source = utils::string::trim_copy(utils::string::split_left(message, ']', message));
utils::string::trim(message);
bool parsed = true;
AixLog::Severity severity = AixLog::Severity::info;
if (level == "TRACE")
severity = AixLog::Severity::trace;
else if (level == "DEBUG")
severity = AixLog::Severity::debug;
else if (level == "INFO")
severity = AixLog::Severity::info;
else if (level == "WARN")
severity = AixLog::Severity::warning;
else if (level == "ERROR")
severity = AixLog::Severity::error;
else
parsed = false;
if (parsed)
{
LOG(severity, source) << message << "\n";
// std::cerr << "Parsed: " << "Severity: " << severity << ", source: " << source << ", msg: " << message << "\n";
}
else
{
return;
// LOG(INFO, LOG_TAG) << "(" << getName() << ") " << line << "\n";
}
// [2021-06-04T07:20:47Z INFO librespot_playback::player] <Tunnel> (310573 ms) loaded
// info!("Track \"{}\" loaded", track.name);
size_t title_pos = 0;
size_t ms_pos = 0;
size_t n = 0;
if (((title_pos = line.find('<')) != std::string::npos) && ((n = line.find('>', title_pos)) != std::string::npos) &&
((ms_pos = line.find('(', n)) != std::string::npos) && ((n = line.find("ms) loaded", ms_pos)) != std::string::npos))
{
title_pos += 1;
std::string title = line.substr(title_pos, line.find('>', title_pos) - title_pos);
LOG(INFO, LOG_TAG) << "metadata: <" << title << ">\n";
ms_pos += 1;
std::string ms = line.substr(ms_pos, n - ms_pos - 1);
Metadata meta;
meta.title = title;
meta.duration = cpt::stod(ms) / 1000.;
meta.art_data = {SPOTIFY_LOGO, "svg"};
Properties properties;
properties.metadata = std::move(meta);
setProperties(properties);
}
}
catch (const std::exception& e)
{
LOG(ERROR, LOG_TAG) << "Exception: " << e.what() << "\n";
}
}
} // namespace streamreader
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