113 lines
3.5 KiB
C++
113 lines
3.5 KiB
C++
// SPDX-FileCopyrightText: Copyright 2018 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <algorithm>
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#include <memory>
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#include <string>
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#include <vector>
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#include "audio_core/sink/sink_details.h"
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#ifdef HAVE_CUBEB
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#include "audio_core/sink/cubeb_sink.h"
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#endif
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#ifdef HAVE_SDL2
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#include "audio_core/sink/sdl2_sink.h"
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#endif
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#include "audio_core/sink/null_sink.h"
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#include "common/logging/log.h"
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namespace AudioCore::Sink {
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namespace {
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struct SinkDetails {
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using FactoryFn = std::unique_ptr<Sink> (*)(std::string_view);
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using ListDevicesFn = std::vector<std::string> (*)(bool);
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using LatencyFn = u32 (*)();
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/// Name for this sink.
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std::string_view id;
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/// A method to call to construct an instance of this type of sink.
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FactoryFn factory;
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/// A method to call to list available devices.
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ListDevicesFn list_devices;
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/// Method to get the latency of this backend.
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LatencyFn latency;
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};
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// sink_details is ordered in terms of desirability, with the best choice at the top.
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constexpr SinkDetails sink_details[] = {
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#ifdef HAVE_CUBEB
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SinkDetails{
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"cubeb",
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[](std::string_view device_id) -> std::unique_ptr<Sink> {
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return std::make_unique<CubebSink>(device_id);
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},
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&ListCubebSinkDevices,
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&GetCubebLatency,
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},
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#endif
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#ifdef HAVE_SDL2
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SinkDetails{
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"sdl2",
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[](std::string_view device_id) -> std::unique_ptr<Sink> {
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return std::make_unique<SDLSink>(device_id);
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},
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&ListSDLSinkDevices,
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&GetSDLLatency,
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},
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#endif
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SinkDetails{"null",
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[](std::string_view device_id) -> std::unique_ptr<Sink> {
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return std::make_unique<NullSink>(device_id);
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},
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[](bool capture) { return std::vector<std::string>{"null"}; }, []() { return 0u; }},
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};
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const SinkDetails& GetOutputSinkDetails(std::string_view sink_id) {
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const auto find_backend{[](std::string_view id) {
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return std::find_if(std::begin(sink_details), std::end(sink_details),
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[&id](const auto& sink_detail) { return sink_detail.id == id; });
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}};
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auto iter = find_backend(sink_id);
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if (sink_id == "auto") {
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// Auto-select a backend. Prefer CubeB, but it may report a large minimum latency which
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// causes audio issues, in that case go with SDL.
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#if defined(HAVE_CUBEB) && defined(HAVE_SDL2)
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iter = find_backend("cubeb");
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if (iter->latency() > TargetSampleCount * 3) {
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iter = find_backend("sdl2");
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}
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#else
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iter = std::begin(sink_details);
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#endif
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LOG_INFO(Service_Audio, "Auto-selecting the {} backend", iter->id);
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}
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if (iter == std::end(sink_details)) {
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LOG_ERROR(Audio, "Invalid sink_id {}", sink_id);
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iter = find_backend("null");
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}
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return *iter;
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}
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} // Anonymous namespace
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std::vector<std::string_view> GetSinkIDs() {
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std::vector<std::string_view> sink_ids(std::size(sink_details));
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std::transform(std::begin(sink_details), std::end(sink_details), std::begin(sink_ids),
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[](const auto& sink) { return sink.id; });
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return sink_ids;
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}
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std::vector<std::string> GetDeviceListForSink(std::string_view sink_id, bool capture) {
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return GetOutputSinkDetails(sink_id).list_devices(capture);
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}
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std::unique_ptr<Sink> CreateSinkFromID(std::string_view sink_id, std::string_view device_id) {
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return GetOutputSinkDetails(sink_id).factory(device_id);
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}
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} // namespace AudioCore::Sink
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