vdecmpeg4_Stream.h

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// Copyright Epic Games, Inc. All Rights Reserved.
#pragma once
 
#include "vdecmpeg4_Types.h"
 
namespace vdecmpeg4
{
 
enum VIDStreamResult
{
    VID_STREAM_OK = 0,
    VID_STREAM_EOF,
    VID_STREAM_ERROR,
};
 
// ----------------------------------------------------------------------------
class VIDStreamIO
{
public:
 
    // ----------------------------------------------------------------------------
    virtual VIDStreamResult Read(uint8* pRequestedDataBuffer, uint32 requestedDataBytes, uint32& actualDataBytes) = 0;
 
    // ----------------------------------------------------------------------------
    virtual bool IsEof() = 0;
 
};
 
 
// ----------------------------------------------------------------------------
class VIDStreamEvents
{
public:
 
    struct VOLInfo
    {
        int16 mWidth;
        int16 mHeight;
 
        int16 mCodedWidth;
        int16 mCodedHeight;
 
        // Four-bit integer which defines the value of pixel aspect ratio
        // 0x0:  Forbidden
        // 0x1:  1:1 (Square)
        // 0x2:  12:11 (625-type for 4:3 picture)
        // 0x3:  10:11 (525-type for 4:3 picture)
        // 0x4:  16:11 (625-type stretched for 16:9 picture)
        // 0x5:  40:33 (525-type stretched for 16:9 picture)
        // 0xf:  extended PAR - see below
        uint8 mAspectRatio;
 
        uint8   mAspectRatioPARwidth;
        uint8   mAspectRatioPARheight;
 
        uint8 mProfileLevel;
 
        uint16 mFPSNumerator;
        uint16 mFPSDenominator;
    };
 
    // ----------------------------------------------------------------------------
    virtual void FoundVideoObjectLayer(const VOLInfo& volInfo) = 0;
};
 
 
}