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/*
* Copyright (C) 2022 Apple 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.
*/
#pragma once
#include <span>
#include <wtf/CompletionHandler.h>
#include <wtf/Expected.h>
#include <wtf/Ref.h>
namespace WebCore {
class VideoFrame;
class VideoDecoder {
public:
WEBCORE_EXPORT VideoDecoder();
WEBCORE_EXPORT virtual ~VideoDecoder();
enum class HardwareAcceleration { Yes, No };
enum class HardwareBuffer { Yes, No };
struct Config {
std::span<const uint8_t> description;
uint64_t width { 0 };
uint64_t height { 0 };
HardwareAcceleration decoding { HardwareAcceleration::No };
HardwareBuffer pixelBuffer { HardwareBuffer::No };
};
struct EncodedFrame {
std::span<const uint8_t> data;
bool isKeyFrame { false };
int64_t timestamp { 0 };
std::optional<uint64_t> duration;
};
struct DecodedFrame {
Ref<VideoFrame> frame;
int64_t timestamp { 0 };
std::optional<uint64_t> duration;
};
using PostTaskCallback = Function<void(Function<void()>&&)>;
using OutputCallback = Function<void(Expected<DecodedFrame, String>&&)>;
using CreateResult = Expected<UniqueRef<VideoDecoder>, 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&&);
WEBCORE_EXPORT static void createLocalDecoder(const String&, const Config&, CreateCallback&&, OutputCallback&&, PostTaskCallback&&);
using DecodeCallback = Function<void(String&&)>;
virtual void decode(EncodedFrame&&, DecodeCallback&&) = 0;
virtual void flush(Function<void()>&&) = 0;
virtual void reset() = 0;
virtual void close() = 0;
static String fourCCToCodecString(uint32_t fourCC);
static CreatorFunction s_customCreator;
};
}
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