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6beb823f15
We can hide the direct array from external view and instead provide functions to retrieve the necessary info. This has the benefit of completely hiding the makeup of the SinkDetails structure from the rest of the code. Given that this makes the array hidden, we can also make the array constexpr by altering the members slightly. This gets rid of several static constructor calls related to std::vector and std::function. Now we don't have heap allocations here that need to occur before the program can even enter main(). It also has the benefit of saving a little bit of heap space, but this doesn't matter too much, since the savings in that regard are pretty tiny.
81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
// Copyright 2018 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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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/null_sink.h"
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#include "audio_core/sink_details.h"
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#ifdef HAVE_CUBEB
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#include "audio_core/cubeb_sink.h"
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#endif
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#include "common/logging/log.h"
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namespace AudioCore {
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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> (*)();
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/// Name for this sink.
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const char* 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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};
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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{"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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#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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[] { return std::vector<std::string>{"null"}; }},
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};
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const SinkDetails& GetSinkDetails(std::string_view sink_id) {
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auto iter =
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std::find_if(std::begin(sink_details), std::end(sink_details),
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[sink_id](const auto& sink_detail) { return sink_detail.id == sink_id; });
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if (sink_id == "auto" || iter == std::end(sink_details)) {
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if (sink_id != "auto") {
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LOG_ERROR(Audio, "AudioCore::SelectSink given invalid sink_id {}", sink_id);
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}
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// Auto-select.
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// sink_details is ordered in terms of desirability, with the best choice at the front.
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iter = std::begin(sink_details);
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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<const char*> GetSinkIDs() {
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std::vector<const char*> 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) {
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return GetSinkDetails(sink_id).list_devices();
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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 GetSinkDetails(sink_id).factory(device_id);
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}
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} // namespace AudioCore
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