timecodeburn.h

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/* SPDX-License-Identifier: MIT */
#ifndef AJA_TIMECODEBURN_H
#define AJA_TIMECODEBURN_H
 
#include "ajabase/common/export.h"
#include "ajabase/common/videotypes.h"
#include <string>
 
class AJATimeCodeBurn
{
public:
    AJA_EXPORT AJATimeCodeBurn(void);
    AJA_EXPORT virtual ~AJATimeCodeBurn(void);
    AJA_EXPORT bool RenderTimeCodeFont (AJA_PixelFormat pixelFormat, uint32_t numPixels, uint32_t numLines);
 
    AJA_EXPORT bool BurnTimeCode (void * pBaseVideoAddress, const std::string & inTimeCodeStr, const uint32_t inYPercent);
 
    AJA_EXPORT bool BurnTimeCode (char * pBaseVideoAddress, const char * pTimeCodeString, const uint32_t percentY);
 
protected:
 
    void CopyDigit (int digitOffset,char *pFrameBuff);
    void writeV210Pixel (char **pBytePtr, int x, int c, int y);
    void writeYCbCr10PackedPlanerPixel (char **pBytePtr, int x, int y);
 
private:
    bool                _bRendered;         // set 'true' when Burn-In character map has been rendered
    char *              _pCharRenderMap;    // ptr to rendered Burn-In character set
    AJA_PixelFormat     _charRenderPixelFormat; // frame buffer format of rendered characters
    int                 _charRenderHeight;  // frame height for which rendered characters were rendered
    int                 _charRenderWidth;   // frame width for which rendered characters were rendered
    int                 _charWidthBytes;    // rendered character width in bytes
    int                 _charHeightLines;   // rendered character height in frame lines
    int                 _charPositionX;     // offset (in bytes) from left side of screen to first burn-in character
    int                 _charPositionY;     // offset (in lines) from top of screen to top of burn-in characters
    int                 _rowBytes;
};
 
#endif  //  AJA_TIMECODEBURN_H