/*

* 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

#include "PlatformRawAudioData.h"

#if ENABLE(WEB_CODECS)

#include "AudioEncoderActiveConfiguration.h"

#include "WebCodecsAudioInternalData.h"

#include <span>

#include <wtf/CompletionHandler.h>

#include <wtf/Expected.h>

#include <wtf/Vector.h>

namespace WebCore {

class AudioEncoder {

public:

virtual ~AudioEncoder() = default;

struct OpusConfig {

bool isOggBitStream { false };

uint64_t frameDuration { 20000 };

std::optional<size_t> complexity;

size_t packetlossperc { 0 };

bool useinbandfec { false };

bool usedtx { false };

};

struct FlacConfig {

size_t blockSize;

size_t compressLevel;

};

struct Config {

std::optional<size_t> sampleRate;

std::optional<size_t> numberOfChannels;

uint64_t bitRate { 0 };

std::optional<OpusConfig> opusConfig;

std::optional<bool> isAacADTS;

std::optional<FlacConfig> flacConfig;

};

using ActiveConfiguration = AudioEncoderActiveConfiguration;

struct EncodedFrame {

Vector<uint8_t> data;

bool isKeyFrame { false };

int64_t timestamp { 0 };

std::optional<uint64_t> duration;

};

struct RawFrame {

RefPtr<PlatformRawAudioData> frame;

int64_t timestamp { 0 };

std::optional<uint64_t> duration;

};

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

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

using DescriptionCallback = Function<void(ActiveConfiguration&&)>;

using OutputCallback = Function<void(EncodedFrame&&)>;

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

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

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

virtual void encode(RawFrame&&, EncodeCallback&&) = 0;

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

virtual void reset() = 0;

virtual void close() = 0;

};

}

#endif // ENABLE(WEB_CODECS)