xbmc/pictures/JpegParse.h

   1 #pragma once
   2
   3 #include "ExifParse.h"
   4 #include "IptcParse.h"
   5
   6 #include <stdio.h>
   7
   8 //--------------------------------------------------------------------------
   9 // JPEG markers consist of one or more 0xFF bytes, followed by a marker
  10 // code byte (which is not an FF).  Here are the marker codes of interest
  11 // in this application.
  12 //--------------------------------------------------------------------------
  13
  14 #define M_SOF0  0xC0            // Start Of Frame N
  15 #define M_SOF1  0xC1            // N indicates which compression process
  16 #define M_SOF2  0xC2            // Only SOF0-SOF2 are now in common use
  17 #define M_SOF3  0xC3
  18 #define M_SOF5  0xC5            // NB: codes C4 and CC are NOT SOF markers
  19 #define M_SOF6  0xC6
  20 #define M_SOF7  0xC7
  21 #define M_SOF9  0xC9
  22 #define M_SOF10 0xCA
  23 #define M_SOF11 0xCB
  24 #define M_SOF13 0xCD
  25 #define M_SOF14 0xCE
  26 #define M_SOF15 0xCF
  27 #define M_SOI   0xD8            // Start Of Image (beginning of datastream)
  28 #define M_EOI   0xD9            // End Of Image (end of datastream)
  29 #define M_SOS   0xDA            // Start Of Scan (begins compressed data)
  30 #define M_JFIF  0xE0            // Jfif marker
  31 #define M_EXIF  0xE1            // Exif marker
  32 #define M_COM   0xFE            // COMment
  33 #define M_DQT   0xDB
  34 #define M_DHT   0xC4
  35 #define M_DRI   0xDD
  36 #define M_IPTC  0xED            // IPTC marker
  37
  38 namespace XFILE
  39 {
  40   class CFile;
  41 }
  42
  43
  44 class CJpegParse
  45 {
  46   public:
  47     CJpegParse();
  48    ~CJpegParse(void) = default;
  49     bool Process(const char *picFileName);
  50     const ExifInfo_t* GetExifInfo() const { return &m_ExifInfo; }
  51     const IPTCInfo_t* GetIptcInfo() const { return &m_IPTCInfo; }
  52
  53   private:
  54     bool ExtractInfo(XFILE::CFile& infile);
  55     bool GetSection(XFILE::CFile& infile, const unsigned short sectionLength);
  56     void ReleaseSection(void);
  57     void ProcessSOFn(void);
  58
  59     unsigned char* m_SectionBuffer;
  60     ExifInfo_t m_ExifInfo;
  61     IPTCInfo_t m_IPTCInfo;
  62 };
  63