/*

* Copyright (C) 2022 Apple Inc. All rights reserved.

* Copyright (C) 2023 Igalia S.L

*

* 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.

*/

#pragma once

#if ENABLE(WEB_CODECS)

#include <span>

#include <wtf/CompletionHandler.h>

#include <wtf/Expected.h>

#include <wtf/Ref.h>

namespace WebCore {

class PlatformRawAudioData;

class AudioDecoder {

public:

WEBCORE_EXPORT AudioDecoder();

WEBCORE_EXPORT virtual ~AudioDecoder();

static bool isCodecSupported(const StringView&);

struct Config {

std::span<const uint8_t> description;

uint64_t sampleRate { 0 };

uint64_t numberOfChannels { 0 };

};

struct EncodedData {

std::span<const uint8_t> data;

bool isKeyFrame { false };

int64_t timestamp { 0 };

std::optional<uint64_t> duration;

};

struct DecodedData {

Ref<PlatformRawAudioData> data;

};

using PostTaskCallback = Function<void(Function<void()>&&)>;

using OutputCallback = Function<void(Expected<DecodedData, String>&&)>;

using CreateResult = Expected<UniqueRef<AudioDecoder>, String>;

using CreateCallback = Function<void(CreateResult&&)>;

using CreatorFunction = void(*)(const String&, const Config&, CreateCallback&&, OutputCallback&&, PostTaskCallback&&);

WEBCORE_EXPORT static void setCreatorCallback(CreatorFunction&&);

static void create(const String&, const Config&, CreateCallback&&, OutputCallback&&, PostTaskCallback&&);

using DecodeCallback = Function<void(String&&)>;

virtual void decode(EncodedData&&, DecodeCallback&&) = 0;

virtual void flush(Function<void()>&&) = 0;

virtual void reset() = 0;

virtual void close() = 0;

};

}

#endif // ENABLE(WEB_CODECS)