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// Copyright 2017 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "AudioCommon/CubebUtils.h"
#include <cstdarg>
#include <cstring>
#include <string_view>
#include "Common/Logging/Log.h"
#include "Common/Logging/LogManager.h"
#include "Common/StringUtil.h"
#include <cubeb/cubeb.h>
static void LogCallback(const char* format, ...)
{
auto* instance = Common::Log::LogManager::GetInstance();
if (instance == nullptr)
return;
constexpr auto log_type = Common::Log::LogType::AUDIO;
constexpr auto log_level = Common::Log::LogLevel::LINFO;
if (!instance->IsEnabled(log_type, log_level))
return;
va_list args;
va_start(args, format);
const char* filename = va_arg(args, const char*);
const auto last_slash = std::string_view(filename).find_last_of("/\\");
if (last_slash != std::string_view::npos)
filename = filename + last_slash + 1;
const int lineno = va_arg(args, int);
const std::string adapted_format(StripWhitespace(format + strlen("%s:%d:")));
const std::string message = StringFromFormatV(adapted_format.c_str(), args);
va_end(args);
instance->LogWithFullPath(log_level, log_type, filename, lineno, message.c_str());
}
static void DestroyContext(cubeb* ctx)
{
cubeb_destroy(ctx);
if (cubeb_set_log_callback(CUBEB_LOG_DISABLED, nullptr) != CUBEB_OK)
{
ERROR_LOG_FMT(AUDIO, "Error removing cubeb log callback");
}
}
std::shared_ptr<cubeb> CubebUtils::GetContext()
{
static std::weak_ptr<cubeb> weak;
std::shared_ptr<cubeb> shared = weak.lock();
// Already initialized
if (shared)
return shared;
if (cubeb_set_log_callback(CUBEB_LOG_NORMAL, LogCallback) != CUBEB_OK)
{
ERROR_LOG_FMT(AUDIO, "Error setting cubeb log callback");
}
cubeb* ctx;
if (cubeb_init(&ctx, "Dolphin Emulator", nullptr) != CUBEB_OK)
{
ERROR_LOG_FMT(AUDIO, "Error initializing cubeb library");
return nullptr;
}
INFO_LOG_FMT(AUDIO, "Cubeb initialized using {} backend", cubeb_get_backend_id(ctx));
weak = shared = {ctx, DestroyContext};
return shared;
}
std::vector<std::pair<std::string, std::string>> CubebUtils::ListInputDevices()
{
std::vector<std::pair<std::string, std::string>> devices;
cubeb_device_collection collection;
auto cubeb_ctx = CubebUtils::GetContext();
const int r = cubeb_enumerate_devices(cubeb_ctx.get(), CUBEB_DEVICE_TYPE_INPUT, &collection);
if (r != CUBEB_OK)
{
ERROR_LOG_FMT(AUDIO, "Error listing cubeb input devices");
return devices;
}
INFO_LOG_FMT(AUDIO, "Listing cubeb input devices:");
for (uint32_t i = 0; i < collection.count; i++)
{
const auto& info = collection.device[i];
const auto device_state = info.state;
const char* state_name = [device_state] {
switch (device_state)
{
case CUBEB_DEVICE_STATE_DISABLED:
return "disabled";
case CUBEB_DEVICE_STATE_UNPLUGGED:
return "unplugged";
case CUBEB_DEVICE_STATE_ENABLED:
return "enabled";
default:
return "unknown?";
}
}();
// According to cubeb_device_info definition in cubeb.h:
// > "Optional vendor name, may be NULL."
// In practice, it seems some other fields might be NULL as well.
static constexpr auto fmt_str = [](const char* ptr) constexpr -> const char* {
return (ptr == nullptr) ? "(null)" : ptr;
};
INFO_LOG_FMT(AUDIO,
"[{}] Device ID: {}\n"
"\tName: {}\n"
"\tGroup ID: {}\n"
"\tVendor: {}\n"
"\tState: {}",
i, fmt_str(info.device_id), fmt_str(info.friendly_name), fmt_str(info.group_id),
fmt_str(info.vendor_name), state_name);
if (info.device_id == nullptr)
continue; // Shouldn't happen
if (info.state == CUBEB_DEVICE_STATE_ENABLED)
{
devices.emplace_back(info.device_id, fmt_str(info.friendly_name));
}
}
cubeb_device_collection_destroy(cubeb_ctx.get(), &collection);
return devices;
}
cubeb_devid CubebUtils::GetInputDeviceById(std::string_view id)
{
if (id.empty())
return nullptr;
cubeb_device_collection collection;
auto cubeb_ctx = CubebUtils::GetContext();
const int r = cubeb_enumerate_devices(cubeb_ctx.get(), CUBEB_DEVICE_TYPE_INPUT, &collection);
if (r != CUBEB_OK)
{
ERROR_LOG_FMT(AUDIO, "Error enumerating cubeb input devices");
return nullptr;
}
cubeb_devid device_id = nullptr;
for (uint32_t i = 0; i < collection.count; i++)
{
const auto& info = collection.device[i];
if (id.compare(info.device_id) == 0)
{
device_id = info.devid;
break;
}
}
if (device_id == nullptr)
{
WARN_LOG_FMT(AUDIO, "Failed to find selected input device, defaulting to system preferences");
}
cubeb_device_collection_destroy(cubeb_ctx.get(), &collection);
return device_id;
}
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