7ddbc2d7dd
However, the playback rate is still limited to 1.0 at the element, because audio stretching is not yet implemented.
74 lines
2.2 KiB
C++
74 lines
2.2 KiB
C++
/*
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* Copyright (c) 2026-present, the Ladybird 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/Atomic.h>
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#include <AK/HashMap.h>
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#include <AK/NonnullRefPtr.h>
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#include <AK/RefPtr.h>
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#include <LibMedia/Audio/Forward.h>
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#include <LibMedia/Audio/SampleSpecification.h>
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#include <LibMedia/AudioBlock.h>
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#include <LibMedia/Export.h>
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#include <LibMedia/Forward.h>
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#include <LibMedia/PipelineStatus.h>
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#include <LibMedia/Processors/AudioProcessor.h>
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#include <LibMedia/Producers/AudioProducer.h>
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#include <LibSync/Mutex.h>
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namespace Media {
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class MEDIA_API AudioMixer final : public AudioProcessor {
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public:
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static ErrorOr<NonnullRefPtr<AudioMixer>> try_create();
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AudioMixer();
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virtual ~AudioMixer() override;
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virtual ErrorOr<void> connect_input(NonnullRefPtr<AudioProducer> const&) override;
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virtual void disconnect_input(NonnullRefPtr<AudioProducer> const&) override;
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virtual void seek(AK::Duration timestamp) override;
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virtual void set_playback_rate(float) override;
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virtual ErrorOr<void> set_output_sample_specification(Audio::SampleSpecification) override;
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Audio::SampleSpecification sample_specification() const;
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virtual void start() override;
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virtual PipelineStatus status() const override;
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virtual void pull(AudioBlock& into) override;
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virtual void set_wake_handler(PipelineWakeHandler) override;
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private:
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struct InputMixingData {
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AudioBlock current_block;
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i64 next_frame { 0 };
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PipelineStatus last_status { PipelineStatus::Pending };
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};
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PipelineStatus combined_input_status() const;
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void dispatch_wake();
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AK::Duration mix_head_timestamp() const;
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void disconnect_input_while_locked(NonnullRefPtr<AudioProducer> const&);
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mutable Sync::Mutex m_mutex;
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Audio::SampleSpecification m_sample_specification;
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mutable HashMap<NonnullRefPtr<AudioProducer>, InputMixingData> m_inputs;
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i64 m_next_frame_to_write { 0 };
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float m_playback_rate { 1.0f };
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bool m_started { false };
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bool m_moved_position_pending { false };
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mutable bool m_downstream_needs_wake { true };
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PipelineWakeHandler m_wake_handler;
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mutable PipelineStatus m_status { PipelineStatus::Pending };
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};
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}
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