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62 lines
1.9 KiB
C++
62 lines
1.9 KiB
C++
//
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// MultiSpeaker.hpp
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// Clock Signal
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//
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// Created by Thomas Harte on 18/02/2018.
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// Copyright 2018 Thomas Harte. All rights reserved.
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//
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#ifndef MultiSpeaker_hpp
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#define MultiSpeaker_hpp
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#include "../../../../Machines/DynamicMachine.hpp"
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#include "../../../../Outputs/Speaker/Speaker.hpp"
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#include <memory>
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#include <mutex>
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#include <vector>
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namespace Analyser {
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namespace Dynamic {
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/*!
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Provides a class that multiplexes calls to and from Outputs::Speaker::Speaker in order
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transparently to connect a single caller to multiple destinations.
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Makes a static internal copy of the list of machines; expects the owner to keep it
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abreast of the current frontmost machine.
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*/
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class MultiSpeaker: public Outputs::Speaker::Speaker, Outputs::Speaker::Speaker::Delegate {
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public:
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/*!
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Provides a construction mechanism that may return nullptr, in the case that all included
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machines return nullptr as their speaker.
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*/
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static MultiSpeaker *create(const std::vector<std::unique_ptr<::Machine::DynamicMachine>> &machines);
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/// This class requires the caller to nominate changes in the frontmost machine.
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void set_new_front_machine(::Machine::DynamicMachine *machine);
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// Below is the standard Outputs::Speaker::Speaker interface; see there for documentation.
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float get_ideal_clock_rate_in_range(float minimum, float maximum) override;
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void set_computed_output_rate(float cycles_per_second, int buffer_size, bool stereo) override;
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bool get_is_stereo() override;
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void set_output_volume(float) override;
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private:
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void speaker_did_complete_samples(Speaker *speaker, const std::vector<int16_t> &buffer) final;
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void speaker_did_change_input_clock(Speaker *speaker) final;
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MultiSpeaker(const std::vector<Outputs::Speaker::Speaker *> &speakers);
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std::vector<Outputs::Speaker::Speaker *> speakers_;
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Outputs::Speaker::Speaker *front_speaker_ = nullptr;
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std::mutex front_speaker_mutex_;
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bool stereo_output_ = false;
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};
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}
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}
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#endif /* MultiSpeaker_hpp */
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