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Support replacing a mixing channel stream

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This commit is contained in:
Nikita Lisitsa 2022-10-05 22:31:29 +03:00
parent bb31fe79c9
commit cab34558ce
2 changed files with 12 additions and 0 deletions
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3
libs/audio/include/psemek/audio/mixer.hpp
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@ -1,6 +1,7 @@
#pragma once #pragma once
#include <psemek/audio/stream.hpp> #include <psemek/audio/stream.hpp>
#include <psemek/util/function.hpp>
#include <memory> #include <memory>
@ -16,6 +17,8 @@ namespace psemek::audio
virtual bool is_stopped() const = 0; virtual bool is_stopped() const = 0;
virtual void replace(util::function<stream_ptr(stream_ptr)> modifier) = 0;
virtual ~channel() {} virtual ~channel() {}
}; };

9
libs/audio/source/mixer.cpp
View file

@ -18,6 +18,8 @@ namespace psemek::audio
void stop() override; void stop() override;
bool is_stopped() const override; bool is_stopped() const override;
void replace(util::function<stream_ptr(stream_ptr)> modifier) override;
}; };
void channel_impl::stop() void channel_impl::stop()
@ -30,6 +32,13 @@ namespace psemek::audio
return std::atomic_load(&stream) != nullptr; return std::atomic_load(&stream) != nullptr;
} }
void channel_impl::replace(util::function<stream_ptr(stream_ptr)> modifier)
{
stream_ptr stream = std::atomic_load(&(this->stream));
stream = modifier(std::move(stream));
std::atomic_store(&(this->stream), std::move(stream));
}
struct mixer_impl final struct mixer_impl final
: mixer : mixer
, std::enable_shared_from_this<mixer_impl> , std::enable_shared_from_this<mixer_impl>