mirror of
https://github.com/LadybirdBrowser/ladybird
synced 2026-05-05 06:32:30 +02:00
7beac55210
Generate exact JS buffer types for exact IDL buffer arguments instead of widening them to BufferSource or ArrayBufferView. This fixes cases like TextEncoder.encodeInto(), whose IDL requires a Uint8Array destination. Previously the generated binding accepted any BufferSource, so DataView, other typed arrays, and ArrayBuffer-backed values were let through. With exact conversion, those are rejected at the binding layer as expected.
66 lines
2.6 KiB
C++
66 lines
2.6 KiB
C++
/*
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* Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>
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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/Vector.h>
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#include <LibJS/Forward.h>
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#include <LibWeb/Bindings/PlatformObject.h>
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#include <LibWeb/WebIDL/Buffers.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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#include <LibWeb/WebIDL/Types.h>
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namespace Web::WebAudio {
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struct AudioBufferOptions {
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WebIDL::UnsignedLong number_of_channels { 1 };
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WebIDL::UnsignedLong length {};
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float sample_rate {};
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};
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// https://webaudio.github.io/web-audio-api/#AudioBuffer
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class AudioBuffer final : public Bindings::PlatformObject {
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WEB_PLATFORM_OBJECT(AudioBuffer, Bindings::PlatformObject);
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GC_DECLARE_ALLOCATOR(AudioBuffer);
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public:
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static WebIDL::ExceptionOr<GC::Ref<AudioBuffer>> create(JS::Realm&, WebIDL::UnsignedLong number_of_channels, WebIDL::UnsignedLong length, float sample_rate);
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static WebIDL::ExceptionOr<GC::Ref<AudioBuffer>> construct_impl(JS::Realm&, AudioBufferOptions const&);
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virtual ~AudioBuffer() override;
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float sample_rate() const;
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WebIDL::UnsignedLong length() const;
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double duration() const;
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WebIDL::UnsignedLong number_of_channels() const;
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WebIDL::ExceptionOr<GC::Ref<JS::Float32Array>> get_channel_data(WebIDL::UnsignedLong channel) const;
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WebIDL::ExceptionOr<void> copy_from_channel(GC::Root<JS::Float32Array> const&, WebIDL::UnsignedLong channel_number, WebIDL::UnsignedLong buffer_offset = 0) const;
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WebIDL::ExceptionOr<void> copy_to_channel(GC::Root<JS::Float32Array> const&, WebIDL::UnsignedLong channel_number, WebIDL::UnsignedLong buffer_offset = 0);
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private:
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explicit AudioBuffer(JS::Realm&, AudioBufferOptions const&);
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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// https://webaudio.github.io/web-audio-api/#dom-audiobuffer-number-of-channels-slot
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// The number of audio channels for this AudioBuffer, which is an unsigned long.
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//
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// https://webaudio.github.io/web-audio-api/#dom-audiobuffer-internal-data-slot
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// A data block holding the audio sample data.
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Vector<GC::Ref<JS::Float32Array>> m_channels; // [[internal data]] / [[number_of_channels]]
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// https://webaudio.github.io/web-audio-api/#dom-audiobuffer-length-slot
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// The length of each channel of this AudioBuffer, which is an unsigned long.
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WebIDL::UnsignedLong m_length {}; // [[length]]
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// https://webaudio.github.io/web-audio-api/#dom-audiobuffer-sample-rate-slot
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// The sample-rate, in Hz, of this AudioBuffer, a float.
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float m_sample_rate {}; // [[sample rate]]
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};
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}
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