rpcs3/rpcs3/Emu/Cell/Modules/cellMusicSelectionContext.cpp
2023-01-10 19:28:26 +01:00

339 lines
8.4 KiB
C++

#include "stdafx.h"
#include "cellMusic.h"
#include "util/yaml.hpp"
#include "Emu/VFS.h"
#include <random>
// This is just a helper and not a real cell entity
LOG_CHANNEL(cellMusicSelectionContext);
bool music_selection_context::set(const CellMusicSelectionContext& in)
{
if (memcmp(in.data, magic, sizeof(magic)) != 0)
{
return false;
}
u32 pos = sizeof(magic);
hash = &in.data[pos];
return load_playlist();
}
CellMusicSelectionContext music_selection_context::get() const
{
if (hash.size() + sizeof(magic) > CELL_MUSIC_SELECTION_CONTEXT_SIZE)
{
fmt::throw_exception("Contents of music_selection_context are too large");
}
CellMusicSelectionContext out{};
u32 pos = 0;
std::memset(out.data, 0, CELL_MUSIC_SELECTION_CONTEXT_SIZE);
std::memcpy(out.data, magic, sizeof(magic));
pos += sizeof(magic);
std::memcpy(&out.data[pos], hash.c_str(), hash.size());
return out;
}
std::string music_selection_context::to_string() const
{
std::string str = fmt::format(".magic='%s', .content_type=%d, .repeat_mode=%d, .context_option=%d, .first_track=%d, .tracks=%d, .hash='%s', .playlist:",
magic, static_cast<u32>(content_type), static_cast<u32>(repeat_mode), static_cast<u32>(context_option), first_track, playlist.size(), hash);
for (usz i = 0; i < playlist.size(); i++)
{
fmt::append(str, "\n - Track %d: %s", i, ::at32(playlist, i));
}
return str;
}
std::string music_selection_context::get_next_hash()
{
static u64 hash_counter = 0;
return fmt::format("music_selection_context_%d", hash_counter++);
}
std::string music_selection_context::context_to_hex(const CellMusicSelectionContext& context)
{
std::string dahex;
for (usz i = 0; i < CELL_MUSIC_SELECTION_CONTEXT_SIZE; i++)
{
fmt::append(dahex, " %.2x", context.data[i]);
}
return dahex;
}
std::string music_selection_context::get_yaml_path() const
{
std::string path = fs::get_cache_dir() + "cache/playlists/";
if (!fs::create_path(path))
{
cellMusicSelectionContext.fatal("Failed to create path: %s (%s)", path, fs::g_tls_error);
}
return path + hash + ".yml";
}
void music_selection_context::set_playlist(const std::string& path)
{
playlist.clear();
const std::string dir_path = "/dev_hdd0/music";
const std::string vfs_dir_path = vfs::get("/dev_hdd0/music");
if (fs::is_dir(path))
{
content_type = CELL_SEARCH_CONTENTTYPE_MUSICLIST;
for (auto&& dir_entry : fs::dir{path})
{
if (dir_entry.name == "." || dir_entry.name == "..")
{
continue;
}
playlist.push_back(dir_path + std::string(path + "/" + dir_entry.name).substr(vfs_dir_path.length()));
}
}
else
{
content_type = CELL_SEARCH_CONTENTTYPE_MUSIC;
playlist.push_back(dir_path + path.substr(vfs_dir_path.length()));
}
}
void music_selection_context::create_playlist(const std::string& new_hash)
{
hash = new_hash;
const std::string yaml_path = get_yaml_path();
cellMusicSelectionContext.notice("Saving music playlist file %s", yaml_path);
YAML::Emitter out;
out << YAML::BeginMap;
out << "Version" << target_version;
out << "FileType" << target_file_type;
out << "ContentType" << content_type;
out << "ContextOption" << context_option;
out << "RepeatMode" << repeat_mode;
out << "FirstTrack" << first_track;
out << "Tracks" << YAML::BeginSeq;
for (const std::string& track : playlist)
{
out << track;
}
out << YAML::EndSeq;
out << YAML::EndMap;
fs::pending_file file(yaml_path);
if (!file.file || (file.file.write(out.c_str(), out.size()), !file.commit()))
{
cellMusicSelectionContext.error("Failed to create music playlist file %s (error=%s)", yaml_path, fs::g_tls_error);
}
}
bool music_selection_context::load_playlist()
{
playlist.clear();
const std::string path = get_yaml_path();
cellMusicSelectionContext.notice("Loading music playlist file %s", path);
std::string content;
{
// Load patch file
fs::file file{path};
if (!file)
{
cellMusicSelectionContext.error("Failed to load music playlist file %s: %s", path, fs::g_tls_error);
return false;
}
content = file.to_string();
}
auto [root, error] = yaml_load(content);
if (!error.empty() || !root)
{
cellMusicSelectionContext.error("Failed to load music playlist file %s:\n%s", path, error);
return false;
}
std::string err;
const std::string version = get_yaml_node_value<std::string>(root["Version"], err);
if (!err.empty())
{
cellMusicSelectionContext.error("No Version entry found. Error: '%s' (file: %s)", err, path);
return false;
}
if (version != target_version)
{
cellMusicSelectionContext.error("Version '%s' does not match music playlist target '%s' (file: %s)", version, target_version, path);
return false;
}
const std::string file_type = get_yaml_node_value<std::string>(root["FileType"], err);
if (!err.empty())
{
cellMusicSelectionContext.error("No FileType entry found. Error: '%s' (file: %s)", err, path);
return false;
}
if (file_type != target_file_type)
{
cellMusicSelectionContext.error("FileType '%s' does not match music playlist target '%s' (file: %s)", file_type, target_file_type, path);
return false;
}
content_type = static_cast<CellSearchContentType>(get_yaml_node_value<u32>(root["ContentType"], err));
if (!err.empty())
{
cellMusicSelectionContext.error("No ContentType entry found. Error: '%s' (file: %s)", err, path);
return false;
}
context_option = static_cast<CellSearchContextOption>(get_yaml_node_value<u32>(root["ContextOption"], err));
if (!err.empty())
{
cellMusicSelectionContext.error("No ContextOption entry found. Error: '%s' (file: %s)", err, path);
return false;
}
repeat_mode = static_cast<CellSearchRepeatMode>(get_yaml_node_value<u32>(root["RepeatMode"], err));
if (!err.empty())
{
cellMusicSelectionContext.error("No RepeatMode entry found. Error: '%s' (file: %s)", err, path);
return false;
}
first_track = get_yaml_node_value<u32>(root["FirstTrack"], err);
if (!err.empty())
{
cellMusicSelectionContext.error("No FirstTrack entry found. Error: '%s' (file: %s)", err, path);
return false;
}
const YAML::Node& track_node = root["Tracks"];
if (!track_node || track_node.Type() != YAML::NodeType::Sequence)
{
cellMusicSelectionContext.error("No Tracks entry found or Tracks is not a Sequence. (file: %s)", path);
return false;
}
for (usz i = 0; i < track_node.size(); i++)
{
playlist.push_back(track_node[i].Scalar());
}
valid = true;
return true;
}
u32 music_selection_context::step_track(bool next)
{
if (playlist.empty())
{
cellMusicSelectionContext.error("No tracks to play...");
current_track = umax;
return umax;
}
switch (repeat_mode)
{
case CELL_SEARCH_REPEATMODE_NONE:
{
if (next)
{
// Try to play the next track.
if (++current_track >= playlist.size())
{
// We are at the end of the playlist.
cellMusicSelectionContext.notice("No more tracks to play in playlist...");
current_track = umax;
return umax;
}
}
else
{
// Try to play the previous track.
if (current_track == 0)
{
// We are at the start of the playlist.
cellMusicSelectionContext.notice("No more tracks to play in playlist...");
current_track = umax;
return umax;
}
current_track--;
}
break;
}
case CELL_SEARCH_REPEATMODE_REPEAT1:
{
// Keep decoding the same track.
break;
}
case CELL_SEARCH_REPEATMODE_ALL:
{
if (next)
{
// Play the next track. Start with the first track if we reached the end of the playlist.
current_track = (current_track + 1) % playlist.size();
}
else
{
// Play the previous track. Start with the last track if we reached the start of the playlist.
if (current_track == 0)
{
current_track = ::narrow<u32>(playlist.size() - 1);
}
else
{
current_track--;
}
}
break;
}
case CELL_SEARCH_REPEATMODE_NOREPEAT1:
{
// We are done. We only wanted to decode a single track.
cellMusicSelectionContext.notice("No more tracks to play...");
current_track = umax;
return umax;
}
default:
{
fmt::throw_exception("Unknown repeat mode %d", static_cast<u32>(repeat_mode));
}
}
if (context_option == CELL_SEARCH_CONTEXTOPTION_SHUFFLE && repeat_mode == CELL_SEARCH_REPEATMODE_ALL && playlist.size() > 1)
{
if (next ? current_track == 0 : current_track == (playlist.size() - 1))
{
// We reached the first or last track again. Let's shuffle!
cellMusicSelectionContext.notice("Shuffling playlist...");
auto engine = std::default_random_engine{};
std::shuffle(std::begin(playlist), std::end(playlist), engine);
}
}
return current_track;
}