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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.
*/
#include "third_party/blink/renderer/modules/webaudio/async_audio_decoder.h"
#include "base/location.h"
#include "base/task/single_thread_task_runner.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_array_buffer.h"
#include "third_party/blink/renderer/modules/webaudio/audio_buffer.h"
#include "third_party/blink/renderer/modules/webaudio/base_audio_context.h"
#include "third_party/blink/renderer/platform/audio/audio_bus.h"
#include "third_party/blink/renderer/platform/bindings/cross_thread_copier.h"
#include "third_party/blink/renderer/platform/bindings/exception_context.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/scheduler/public/post_cross_thread_task.h"
#include "third_party/blink/renderer/platform/scheduler/public/thread.h"
#include "third_party/blink/renderer/platform/scheduler/public/worker_pool.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_copier_base.h"
#include "third_party/blink/renderer/platform/wtf/cross_thread_functional.h"
namespace blink {
void AsyncAudioDecoder::DecodeAsync(
DOMArrayBuffer* audio_data,
float sample_rate,
V8DecodeSuccessCallback* success_callback,
V8DecodeErrorCallback* error_callback,
ScriptPromiseResolver<AudioBuffer>* resolver,
BaseAudioContext* context,
ExceptionState& exception_state) {
DCHECK(IsMainThread());
DCHECK(audio_data);
scoped_refptr<base::SingleThreadTaskRunner> task_runner =
context->GetExecutionContext()->GetTaskRunner(
blink::TaskType::kInternalMedia);
// ArrayBufferContents is a thread-safe smart pointer around the backing
// store.
ArrayBufferContents audio_data_contents = *audio_data->Content();
worker_pool::PostTask(
FROM_HERE,
CrossThreadBindOnce(
&AsyncAudioDecoder::DecodeOnBackgroundThread,
std::move(audio_data_contents), sample_rate,
MakeCrossThreadHandle(success_callback),
MakeCrossThreadHandle(error_callback),
MakeCrossThreadHandle(resolver), MakeCrossThreadHandle(context),
std::move(task_runner), exception_state.GetContext()));
}
void AsyncAudioDecoder::DecodeOnBackgroundThread(
ArrayBufferContents audio_data_contents,
float sample_rate,
CrossThreadHandle<V8DecodeSuccessCallback> success_callback,
CrossThreadHandle<V8DecodeErrorCallback> error_callback,
CrossThreadHandle<ScriptPromiseResolver<AudioBuffer>> resolver,
CrossThreadHandle<BaseAudioContext> context,
scoped_refptr<base::SingleThreadTaskRunner> task_runner,
const ExceptionContext& exception_context) {
DCHECK(!IsMainThread());
scoped_refptr<AudioBus> bus = AudioBus::CreateBusFromInMemoryAudioFile(
audio_data_contents.ByteSpan(), false, sample_rate);
// A reference to `bus` is retained by base::OnceCallback and will be removed
// after `NotifyComplete()` is done.
PostCrossThreadTask(
*task_runner, FROM_HERE,
CrossThreadBindOnce(
&AsyncAudioDecoder::NotifyComplete, std::move(audio_data_contents),
MakeUnwrappingCrossThreadHandle(success_callback),
MakeUnwrappingCrossThreadHandle(error_callback),
WTF::RetainedRef(std::move(bus)),
MakeUnwrappingCrossThreadHandle(resolver),
MakeUnwrappingCrossThreadHandle(context), exception_context));
}
void AsyncAudioDecoder::NotifyComplete(
ArrayBufferContents,
V8DecodeSuccessCallback* success_callback,
V8DecodeErrorCallback* error_callback,
AudioBus* audio_bus,
ScriptPromiseResolver<AudioBuffer>* resolver,
BaseAudioContext* context,
const ExceptionContext& exception_context) {
DCHECK(IsMainThread());
AudioBuffer* audio_buffer = AudioBuffer::CreateFromAudioBus(audio_bus);
// If the context is available, let the context finish the notification.
if (context) {
context->HandleDecodeAudioData(audio_buffer, resolver, success_callback,
error_callback, exception_context);
}
}
} // namespace blink
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