🛠️🐜 Antkeeper superbuild with dependencies included
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78 lines
1.8 KiB
78 lines
1.8 KiB
#ifndef ALC_BACKENDS_BASE_H
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#define ALC_BACKENDS_BASE_H
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#include <memory>
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#include <chrono>
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#include <string>
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#include <mutex>
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#include "alMain.h"
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struct ClockLatency {
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std::chrono::nanoseconds ClockTime;
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std::chrono::nanoseconds Latency;
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};
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/* Helper to get the current clock time from the device's ClockBase, and
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* SamplesDone converted from the sample rate.
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*/
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inline std::chrono::nanoseconds GetDeviceClockTime(ALCdevice *device)
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{
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using std::chrono::seconds;
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using std::chrono::nanoseconds;
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auto ns = nanoseconds{seconds{device->SamplesDone}} / device->Frequency;
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return device->ClockBase + ns;
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}
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ClockLatency GetClockLatency(ALCdevice *device);
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struct BackendBase {
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virtual ALCenum open(const ALCchar *name) = 0;
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virtual ALCboolean reset();
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virtual ALCboolean start() = 0;
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virtual void stop() = 0;
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virtual ALCenum captureSamples(void *buffer, ALCuint samples);
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virtual ALCuint availableSamples();
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virtual ClockLatency getClockLatency();
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virtual void lock() { mMutex.lock(); }
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virtual void unlock() { mMutex.unlock(); }
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ALCdevice *mDevice;
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std::recursive_mutex mMutex;
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BackendBase(ALCdevice *device) noexcept;
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virtual ~BackendBase();
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};
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using BackendPtr = std::unique_ptr<BackendBase>;
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using BackendUniqueLock = std::unique_lock<BackendBase>;
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using BackendLockGuard = std::lock_guard<BackendBase>;
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enum class BackendType {
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Playback,
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Capture
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};
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enum class DevProbe {
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Playback,
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Capture
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};
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struct BackendFactory {
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virtual bool init() = 0;
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virtual bool querySupport(BackendType type) = 0;
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virtual void probe(DevProbe type, std::string *outnames) = 0;
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virtual BackendPtr createBackend(ALCdevice *device, BackendType type) = 0;
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};
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#endif /* ALC_BACKENDS_BASE_H */
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