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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBCODECS_AUDIO_DATA_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBCODECS_AUDIO_DATA_H_
#include "base/containers/span.h"
#include "media/base/audio_buffer.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_typedefs.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_audio_sample_format.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/modules/webaudio/audio_buffer.h"
#include "third_party/blink/renderer/modules/webcodecs/array_buffer_util.h"
#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
namespace blink {
class AudioDataInit;
class AudioDataCopyToOptions;
class ExceptionState;
class MODULES_EXPORT AudioData final : public ScriptWrappable {
DEFINE_WRAPPERTYPEINFO();
public:
static AudioData* Create(ScriptState*, AudioDataInit*, ExceptionState&);
// Internal constructor for creating from media::AudioDecoder output.
explicit AudioData(scoped_refptr<media::AudioBuffer>);
// audio_data.idl implementation.
explicit AudioData(ScriptState*, AudioDataInit*, ExceptionState&);
~AudioData() final;
// Creates a clone of |this|, taking on a new reference on |data_|. The cloned
// frame will not be closed when |this| is, and its lifetime should be
// independently managed.
AudioData* clone(ExceptionState&);
void close();
std::optional<V8AudioSampleFormat> format() const;
float sampleRate() const;
uint32_t numberOfFrames() const;
uint32_t numberOfChannels() const;
uint64_t duration() const;
int64_t timestamp() const;
uint32_t allocationSize(AudioDataCopyToOptions*, ExceptionState&);
void copyTo(const AllowSharedBufferSource* destination,
AudioDataCopyToOptions*,
ExceptionState&);
scoped_refptr<media::AudioBuffer> data() const { return data_; }
// GarbageCollected override.
void Trace(Visitor*) const override;
private:
void CopyConvert(base::span<uint8_t> dest,
AudioDataCopyToOptions* copy_to_options);
void CopyToInterleaved(base::span<uint8_t> dest,
AudioDataCopyToOptions* copy_to_options);
void CopyToPlanar(base::span<uint8_t> dest,
AudioDataCopyToOptions* copy_to_options,
ExceptionState& exception_state);
scoped_refptr<media::AudioBuffer> data_;
std::optional<V8AudioSampleFormat> format_;
// Space to convert `data_` to f32 planar, for ease of conversions.
std::unique_ptr<media::AudioBus> data_as_f32_bus_;
int64_t timestamp_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBCODECS_AUDIO_DATA_H_
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