mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-09-20 09:49:15 +03:00
71ccd8ad25
This is a simple factory function which effectively just calls the AudioBuffer constructor.
67 lines
2.7 KiB
C++
67 lines
2.7 KiB
C++
/*
|
|
* Copyright (c) 2024, Shannon Booth <shannon@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Vector.h>
|
|
#include <LibJS/Forward.h>
|
|
#include <LibJS/Runtime/ArrayBuffer.h>
|
|
#include <LibWeb/Bindings/PlatformObject.h>
|
|
#include <LibWeb/WebIDL/Buffers.h>
|
|
#include <LibWeb/WebIDL/ExceptionOr.h>
|
|
#include <LibWeb/WebIDL/Types.h>
|
|
|
|
namespace Web::WebAudio {
|
|
|
|
struct AudioBufferOptions {
|
|
WebIDL::UnsignedLong number_of_channels { 1 };
|
|
WebIDL::UnsignedLong length {};
|
|
float sample_rate {};
|
|
};
|
|
|
|
// https://webaudio.github.io/web-audio-api/#AudioContext
|
|
class AudioBuffer final : public Bindings::PlatformObject {
|
|
WEB_PLATFORM_OBJECT(AudioBuffer, Bindings::PlatformObject);
|
|
JS_DECLARE_ALLOCATOR(AudioBuffer);
|
|
|
|
public:
|
|
static WebIDL::ExceptionOr<JS::NonnullGCPtr<AudioBuffer>> create(JS::Realm&, WebIDL::UnsignedLong number_of_channels, WebIDL::UnsignedLong length, float sample_rate);
|
|
static WebIDL::ExceptionOr<JS::NonnullGCPtr<AudioBuffer>> construct_impl(JS::Realm&, AudioBufferOptions const&);
|
|
|
|
virtual ~AudioBuffer() override;
|
|
|
|
float sample_rate() const;
|
|
WebIDL::UnsignedLong length() const;
|
|
double duration() const;
|
|
WebIDL::UnsignedLong number_of_channels() const;
|
|
WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::Float32Array>> get_channel_data(WebIDL::UnsignedLong channel) const;
|
|
WebIDL::ExceptionOr<void> copy_from_channel(JS::Handle<WebIDL::BufferSource> const&, WebIDL::UnsignedLong channel_number, WebIDL::UnsignedLong buffer_offset = 0) const;
|
|
WebIDL::ExceptionOr<void> copy_to_channel(JS::Handle<WebIDL::BufferSource> const&, WebIDL::UnsignedLong channel_number, WebIDL::UnsignedLong buffer_offset = 0);
|
|
|
|
private:
|
|
explicit AudioBuffer(JS::Realm&, AudioBufferOptions const&);
|
|
|
|
virtual void initialize(JS::Realm&) override;
|
|
virtual void visit_edges(Cell::Visitor&) override;
|
|
|
|
// https://webaudio.github.io/web-audio-api/#dom-audiobuffer-number-of-channels-slot
|
|
// The number of audio channels for this AudioBuffer, which is an unsigned long.
|
|
//
|
|
// https://webaudio.github.io/web-audio-api/#dom-audiobuffer-internal-data-slot
|
|
// A data block holding the audio sample data.
|
|
Vector<JS::NonnullGCPtr<JS::Float32Array>> m_channels; // [[internal data]] / [[number_of_channels]]
|
|
|
|
// https://webaudio.github.io/web-audio-api/#dom-audiobuffer-length-slot
|
|
// The length of each channel of this AudioBuffer, which is an unsigned long.
|
|
WebIDL::UnsignedLong m_length {}; // [[length]]
|
|
|
|
// https://webaudio.github.io/web-audio-api/#dom-audiobuffer-sample-rate-slot
|
|
// The sample-rate, in Hz, of this AudioBuffer, a float.
|
|
float m_sample_rate {}; // [[sample rate]]
|
|
};
|
|
|
|
}
|