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dfc57c0dd9
The audio loader plugins already do this internally, if we do this a second time the seek bar will just end up getting rendered at the wrong place.
66 lines
2.1 KiB
C++
66 lines
2.1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/FixedArray.h>
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#include <AK/Queue.h>
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#include <AK/Vector.h>
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#include <LibAudio/ConnectionToServer.h>
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#include <LibAudio/Loader.h>
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#include <LibAudio/Resampler.h>
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#include <LibAudio/Sample.h>
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#include <LibCore/Timer.h>
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class PlaybackManager final {
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public:
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PlaybackManager(NonnullRefPtr<Audio::ConnectionToServer>);
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~PlaybackManager() = default;
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void play();
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void stop();
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void pause();
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void seek(int const position);
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void loop(bool);
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bool toggle_pause();
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void set_loader(NonnullRefPtr<Audio::Loader>&&);
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RefPtr<Audio::Loader> loader() const { return m_loader; }
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size_t device_sample_rate() const { return m_device_sample_rate; }
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bool is_paused() const { return m_paused; }
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float total_length() const { return m_total_length; }
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FixedArray<Audio::Sample> const& current_buffer() const { return m_current_buffer; }
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NonnullRefPtr<Audio::ConnectionToServer> connection() const { return m_connection; }
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Function<void()> on_update;
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Function<void()> on_finished_playing;
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private:
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// Number of buffers we want to always keep enqueued.
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static constexpr size_t always_enqueued_buffer_count = 5;
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void next_buffer();
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void set_paused(bool);
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bool m_paused { true };
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bool m_loop = { false };
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float m_total_length { 0 };
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size_t m_device_sample_rate { 44100 };
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size_t m_device_samples_per_buffer { 0 };
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size_t m_samples_to_load_per_buffer { 0 };
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RefPtr<Audio::Loader> m_loader { nullptr };
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NonnullRefPtr<Audio::ConnectionToServer> m_connection;
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FixedArray<Audio::Sample> m_current_buffer;
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Optional<Audio::ResampleHelper<Audio::Sample>> m_resampler;
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RefPtr<Core::Timer> m_timer;
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// Controls the GUI update rate. A smaller value makes the visualizations nicer.
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static constexpr u32 update_rate_ms = 50;
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// Number of milliseconds of audio data contained in each audio buffer
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static constexpr u32 buffer_size_ms = 100;
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};
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