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/*
* Copyright (C) 2011, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_ASYNC_AUDIO_DECODER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_ASYNC_AUDIO_DECODER_H_
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_decode_error_callback.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_decode_success_callback.h"
#include "third_party/blink/renderer/core/typed_arrays/array_buffer/array_buffer_contents.h"
#include "third_party/blink/renderer/platform/heap/cross_thread_handle.h"
namespace base {
class SingleThreadTaskRunner;
}
namespace blink {
class AudioBuffer;
class AudioBus;
class BaseAudioContext;
class DOMArrayBuffer;
class ExceptionContext;
class ExceptionState;
// AsyncAudioDecoder asynchronously decodes audio file data from a
// DOMArrayBuffer in the background thread. Upon successful decoding, a
// completion callback will be invoked with the decoded PCM data in an
// AudioBuffer.
class AsyncAudioDecoder {
DISALLOW_NEW();
public:
AsyncAudioDecoder() = default;
AsyncAudioDecoder(const AsyncAudioDecoder&) = delete;
AsyncAudioDecoder& operator=(const AsyncAudioDecoder&) = delete;
~AsyncAudioDecoder() = default;
// Must be called on the main thread. `DecodeAsync` and callees must not
// modify any of the parameters except `audio_data`. They are used to
// associate this decoding instance with the caller to process the decoding
// appropriately when finished.
void DecodeAsync(DOMArrayBuffer* audio_data,
float sample_rate,
V8DecodeSuccessCallback*,
V8DecodeErrorCallback*,
ScriptPromiseResolver<AudioBuffer>*,
BaseAudioContext*,
ExceptionState&);
private:
AudioBuffer* CreateAudioBufferFromAudioBus(AudioBus*);
static void DecodeOnBackgroundThread(
ArrayBufferContents audio_data_contents,
float sample_rate,
CrossThreadHandle<V8DecodeSuccessCallback>,
CrossThreadHandle<V8DecodeErrorCallback>,
CrossThreadHandle<ScriptPromiseResolver<AudioBuffer>>,
CrossThreadHandle<BaseAudioContext>,
scoped_refptr<base::SingleThreadTaskRunner>,
const ExceptionContext&);
static void NotifyComplete(ArrayBufferContents audio_data_contents,
V8DecodeSuccessCallback*,
V8DecodeErrorCallback*,
AudioBus*,
ScriptPromiseResolver<AudioBuffer>*,
BaseAudioContext*,
const ExceptionContext&);
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_WEBAUDIO_ASYNC_AUDIO_DECODER_H_
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