Source/WebCore/Modules/mediarecorder/MediaRecorderProvider.cpp

/*
 * Copyright (C) 2020 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)
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 */

#include "config.h"
#include "MediaRecorderProvider.h"

#if ENABLE(MEDIA_STREAM) && PLATFORM(COCOA)

#include "ContentType.h"
#include "HTMLParserIdioms.h"
#include "MediaRecorderPrivateAVFImpl.h"

namespace WebCore {

std::unique_ptr<MediaRecorderPrivate> MediaRecorderProvider::createMediaRecorderPrivate(MediaStreamPrivate& stream, const MediaRecorderPrivateOptions& options)
{
    return MediaRecorderPrivateAVFImpl::create(stream, options);
}

bool MediaRecorderProvider::isSupported(const String& value)
{
    if (value.isEmpty())
        return true;

    ContentType mimeType(value);

    auto containerType = mimeType.containerType();
    if (!equalLettersIgnoringASCIICase(containerType, "audio/mp4") && !equalLettersIgnoringASCIICase(containerType, "video/mp4"))
        return false;

    for (auto& item : mimeType.codecs()) {
        auto codec = StringView(item).stripLeadingAndTrailingMatchedCharacters(isHTMLSpace<UChar>);
        // FIXME: We should further validate parameters.
        if (!startsWithLettersIgnoringASCIICase(codec, "avc1") && !startsWithLettersIgnoringASCIICase(codec, "mp4a"))
            return false;
    }
    return true;
}

}

#endif