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/*
* Copyright (C) 2013-2021 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. ``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
* 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 <WebCore/FloatSize.h>
#include <WebCore/MediaPlayerEnums.h>
#include <functional>
#include <variant>
#include <wtf/MediaTime.h>
#include <wtf/Platform.h>
#include <wtf/PrintStream.h>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/text/AtomString.h>
typedef struct opaqueCMSampleBuffer *CMSampleBufferRef;
#if PLATFORM(COCOA)
typedef struct CF_BRIDGED_TYPE(id) __CVBuffer *CVPixelBufferRef;
#endif
typedef struct _GstSample GstSample;
typedef const struct opaqueCMFormatDescription *CMFormatDescriptionRef;
namespace WebCore {
class MockSampleBox;
class ProcessIdentity;
using TrackID = uint64_t;
class PlatformSample {
public:
using VariantType = std::variant<const MockSampleBox*
#if PLATFORM(COCOA)
, RetainPtr<CMSampleBufferRef>
#elif USE(GSTREAMER)
, GstSample*
#endif
>;
PlatformSample(VariantType&& sample)
: m_sample(WTFMove(sample))
{ }
const MockSampleBox* mockSampleBox() const { return std::get<const MockSampleBox*>(m_sample); }
#if PLATFORM(COCOA)
CMSampleBufferRef cmSampleBuffer() const { return std::get<RetainPtr<CMSampleBufferRef>>(m_sample).get(); }
#elif USE(GSTREAMER)
GstSample* gstSample() const { return std::get<GstSample*>(m_sample); }
#endif
private:
VariantType m_sample;
};
class MediaSample : public ThreadSafeRefCounted<MediaSample> {
public:
virtual ~MediaSample() = default;
virtual MediaTime presentationTime() const = 0;
virtual MediaTime decodeTime() const = 0;
virtual MediaTime duration() const = 0;
virtual MediaTime presentationEndTime() const { return presentationTime() + duration(); }
virtual TrackID trackID() const = 0;
virtual size_t sizeInBytes() const = 0;
virtual FloatSize presentationSize() const = 0;
virtual void offsetTimestampsBy(const MediaTime&) = 0;
virtual void setTimestamps(const MediaTime&, const MediaTime&) = 0;
virtual bool isDivisable() const { return false; };
enum DivideFlags { BeforePresentationTime, AfterPresentationTime };
enum class UseEndTime : bool {
DoNotUse,
Use,
};
virtual std::pair<RefPtr<MediaSample>, RefPtr<MediaSample>> divide(const MediaTime&, UseEndTime = UseEndTime::DoNotUse)
{
ASSERT_NOT_REACHED();
return { nullptr, nullptr };
}
virtual Ref<MediaSample> createNonDisplayingCopy() const = 0;
enum SampleFlags {
None = 0,
IsSync = 1 << 0,
IsNonDisplaying = 1 << 1,
HasAlpha = 1 << 2,
HasSyncInfo = 1 << 3,
IsProtected = 1 << 4,
};
virtual SampleFlags flags() const = 0;
virtual PlatformSample platformSample() const = 0;
enum class Type : uint8_t {
None,
MockSampleBox,
CMSampleBuffer,
GStreamerSample,
};
virtual Type type() const = 0;
virtual bool isImageDecoderAVFObjCSample() const { return false; }
struct ByteRange {
size_t byteOffset { 0 };
size_t byteLength { 0 };
};
virtual std::optional<ByteRange> byteRange() const { return std::nullopt; }
bool isSync() const { return flags() & IsSync; }
bool isNonDisplaying() const { return flags() & IsNonDisplaying; }
bool hasAlpha() const { return flags() & HasAlpha; }
bool hasSyncInfo() const { return flags() & HasSyncInfo; }
bool isProtected() const { return flags() & IsProtected; }
virtual void dump(PrintStream& out) const
{
out.print("{PTS(", presentationTime(), "), DTS(", decodeTime(), "), duration(", duration(), "), flags(", (int)flags(), "), presentationSize(", presentationSize().width(), "x", presentationSize().height(), ")}");
}
String toJSONString() const
{
auto object = JSON::Object::create();
object->setObject("pts"_s, presentationTime().toJSONObject());
object->setObject("dts"_s, decodeTime().toJSONObject());
object->setObject("duration"_s, duration().toJSONObject());
object->setBoolean("isSync"_s, isSync());
object->setBoolean("isNonDisplaying"_s, isNonDisplaying());
object->setInteger("flags"_s, static_cast<unsigned>(flags()));
object->setObject("presentationSize"_s, presentationSize().toJSONObject());
return object->toJSONString();
}
};
} // namespace WebCore
namespace WTF {
template<typename Type> struct LogArgument;
template <>
struct LogArgument<WebCore::MediaSample> {
static String toString(const WebCore::MediaSample& sample)
{
return sample.toJSONString();
}
};
} // namespace WTF
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