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#include "midi.h"
#include "reader.h"
#include "util.h"
#include <filesystem>
#include <nlohmann/json.hpp>
#include <fmt/format.h>
#include <util/file.h>
extern std::string gBaseromPath;
std::filesystem::path MidiAsset::generateAssetPath() {
std::filesystem::path asset_path = path;
return asset_path.replace_extension(".mid");
}
std::filesystem::path MidiAsset::generateBuildPath() {
std::filesystem::path build_path = path;
return build_path.replace_extension(".s");
}
void MidiAsset::extractBinary(const std::vector<char>& baserom) {
// Custom extraction as we need a label in the middle.
std::string label = path.stem();
std::filesystem::path tracksPath = path;
tracksPath.replace_filename(label + "_tracks.bin");
std::filesystem::path headerPath = path;
headerPath.replace_filename(label + "_header.bin");
int headerOffset = asset["options"]["headerOffset"];
// Extract tracks
{
auto file = util::open_file(tracksPath, "w");
std::fwrite(baserom.data() + start, 1, static_cast<size_t>(headerOffset), file.get());
}
// Extract header
{
auto file = util::open_file(headerPath, "w");
std::fwrite(baserom.data() + start + headerOffset, 1, static_cast<size_t>(size - headerOffset), file.get());
}
// Create dummy .s file.
auto file = util::open_file(buildPath, "w");
fmt::print(file.get(), "\t.incbin \"{}\"\n", tracksPath.native());
fmt::print(file.get(), "{}::\n", label);
fmt::print(file.get(), "\t.incbin \"{}\"\n", headerPath.native());
}
void MidiAsset::parseOptions(std::vector<std::string>& commonParams, std::vector<std::string>& agb2midParams) {
bool exactGateTime = true;
for (const auto& it : asset["options"].items()) {
const std::string& key = it.key();
if (key == "group" || key == "G") {
commonParams.emplace_back("-G");
commonParams.push_back(to_string(it.value()));
} else if (key == "priority" || key == "P") {
commonParams.emplace_back("-P");
commonParams.push_back(to_string(it.value()));
} else if (key == "reverb" || key == "R") {
commonParams.emplace_back("-R");
commonParams.push_back(to_string(it.value()));
} else if (key == "nominator") {
agb2midParams.emplace_back("-n");
agb2midParams.push_back(to_string(it.value()));
} else if (key == "denominator") {
agb2midParams.emplace_back("-d");
agb2midParams.push_back(to_string(it.value()));
} else if (key == "timeChanges") {
const nlohmann::json& value = it.value();
if (value.is_array()) {
// Multiple time changes
for (const auto& change : value) {
agb2midParams.emplace_back("-t");
agb2midParams.push_back(to_string(change["nominator"]));
agb2midParams.push_back(to_string(change["denominator"]));
agb2midParams.push_back(to_string(change["time"]));
}
} else {
agb2midParams.emplace_back("-t");
agb2midParams.push_back(to_string(value["nominator"]));
agb2midParams.push_back(to_string(value["denominator"]));
agb2midParams.push_back(to_string(value["time"]));
}
} else if (key == "exactGateTime") {
if (it.value().get<int>() == 1) {
exactGateTime = true;
} else {
exactGateTime = false;
}
} else if (key == "headerOffset") {
// ignore here
} else {
commonParams.push_back("-" + key);
commonParams.push_back(to_string(it.value()));
}
}
if (exactGateTime) {
commonParams.emplace_back("-E");
}
}
void MidiAsset::convertToHumanReadable(const std::vector<char>& baserom) {
(void)baserom;
// Convert the options
std::vector<std::string> commonParams;
std::vector<std::string> agb2midParams;
parseOptions(commonParams, agb2midParams);
int headerOffset = asset["options"]["headerOffset"];
std::filesystem::path toolPath = "tools";
std::vector<std::string> cmd;
cmd.push_back(toolPath / "bin" / "agb2mid");
cmd.push_back(gBaseromPath);
cmd.push_back(fmt::format("{:#x}", start + headerOffset));
cmd.push_back(gBaseromPath); // TODO deduplicate?
cmd.push_back(assetPath);
cmd.insert(cmd.end(), commonParams.begin(), commonParams.end());
cmd.insert(cmd.end(), agb2midParams.begin(), agb2midParams.end());
check_call(cmd);
// We also need to build the mid to an s file here, so we get shiftability after converting.
cmd.clear();
cmd.push_back(toolPath / "bin" / "mid2agb");
cmd.push_back(assetPath);
cmd.push_back(buildPath);
cmd.insert(cmd.end(), commonParams.begin(), commonParams.end());
check_call(cmd);
}
void MidiAsset::buildToBinary() {
// Convert the options
std::vector<std::string> commonParams;
std::vector<std::string> agb2midParams;
parseOptions(commonParams, agb2midParams);
std::filesystem::path toolPath = "tools";
std::vector<std::string> cmd;
cmd.push_back(toolPath / "bin" / "mid2agb");
cmd.push_back(assetPath);
cmd.push_back(buildPath);
cmd.insert(cmd.end(), commonParams.begin(), commonParams.end());
check_call(cmd);
}
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