EBML library, input and output, supports MKV and WebM.

2018-01-24 20:04:50 +01:00 · 2018-01-24 20:04:50 +01:00 · a762932c45
commit a762932c45
parent 105b1677d1
11 changed files with 2141 additions and 0 deletions
--- a/lib/ebml.h
+++ b/lib/ebml.h
@ -0,0 +1,118 @@
+#include <stdint.h>
+#include <string>
+
+namespace EBML{
+
+  class UniInt{
+  public:
+    static uint8_t readSize(const char *p);
+    static uint8_t writeSize(const uint64_t val);
+    static uint64_t readInt(const char *p);
+    static void writeInt(char *p, const uint64_t val);
+    static int64_t readSInt(const char *p);
+    static void writeSInt(char *p, const int64_t val);
+  };
+
+  enum ElementType{
+    ELEM_UNKNOWN,
+    ELEM_MASTER,
+    ELEM_UINT,
+    ELEM_INT,
+    ELEM_STRING,
+    ELEM_UTF8,
+    ELEM_BIN,
+    ELEM_FLOAT,
+    ELEM_DATE,
+    ELEM_BLOCK
+  };
+
+  enum ElementID{
+    EID_EBML = 0x0A45DFA3,
+    EID_EBMLVERSION = 0x286,
+    EID_EBMLREADVERSION = 0x2F7,
+    EID_EBMLMAXIDLENGTH = 0x2F2,
+    EID_EBMLMAXSIZELENGTH = 0x2F3,
+    EID_DOCTYPE = 0x282,
+    EID_DOCTYPEVERSION = 0x287,
+    EID_DOCTYPEREADVERSION = 0x285,
+    EID_CODECID = 0x6,
+    EID_TRACKTYPE = 0x3,
+    EID_DEFAULTDURATION = 0x3E383,
+    EID_DURATION = 0x489,
+    EID_CHANNELS = 0x1F,
+    EID_SAMPLINGFREQUENCY = 0x35,
+    EID_TIMECODE = 0x67,
+    EID_BITDEPTH = 0x2264,
+    EID_TRACKENTRY = 0x2E,
+    EID_TRACKUID = 0x33C5,
+    EID_PIXELWIDTH = 0x30,
+    EID_FLAGLACING = 0x1C,
+    EID_PIXELHEIGHT = 0x3A,
+    EID_TRACKNUMBER = 0x57,
+    EID_CODECPRIVATE = 0x23A2,
+    EID_LANGUAGE = 0x2B59C,
+    EID_VIDEO = 0x60,
+    EID_AUDIO = 0x61,
+    EID_TIMECODESCALE = 0xAD7B1,
+    EID_MUXINGAPP = 0xD80,
+    EID_WRITINGAPP = 0x1741,
+    EID_CLUSTER = 0x0F43B675,
+    EID_SEGMENT = 0x08538067,
+    EID_INFO = 0x0549A966,
+    EID_TRACKS = 0x0654AE6B,
+    EID_SIMPLEBLOCK = 0x23,
+    EID_SEEKHEAD = 0x014D9B74,
+    EID_SEEK = 0xDBB,
+    EID_SEEKID = 0x13AB,
+    EID_SEEKPOSITION = 0x13AC,
+    EID_CUES = 0xC53BB6B,
+    EID_CUETRACK = 0x77,
+    EID_CUECLUSTERPOSITION = 0x71,
+    EID_CUERELATIVEPOSITION = 0x70,
+    EID_CUETRACKPOSITIONS = 0x37,
+    EID_CUETIME = 0x33,
+    EID_CUEPOINT = 0x3B,
+    EID_UNKNOWN = 0
+  };
+
+  class Element{
+  public:
+    static uint64_t needBytes(const char *p, uint64_t availBytes, bool minimal = false);
+    static std::string getIDString(uint32_t id);
+    Element(const char *p = 0, bool minimal = false);
+    inline operator bool() const{return data;}
+    uint32_t getID() const;
+    uint64_t getPayloadLen() const;
+    uint8_t getHeaderLen() const;
+    const char *getPayload() const;
+    uint64_t getOuterLen() const;
+    ElementType getType() const;
+    virtual std::string toPrettyString(const uint8_t indent = 0, const uint8_t detail = 3) const;
+    uint64_t getValUInt() const;
+    int64_t getValInt() const;
+    double getValFloat() const;
+    std::string getValString() const;
+    const Element findChild(uint32_t id) const;
+
+  private:
+    const char *data;
+    bool minimalMode; ///<If set, ELEM_MASTER elements will not access payload data when
+                      /// pretty-printing.
+  };
+
+  class Block : public Element{
+  public:
+    Block(const char *p = 0) : Element(p){}
+    uint64_t getTrackNum() const;
+    int16_t getTimecode() const;
+    bool isKeyframe() const;
+    bool isInvisible() const;
+    bool isDiscardable() const;
+    uint8_t getLacing() const;
+    uint8_t getFrameCount() const;
+    uint32_t getFrameSize(uint8_t no) const;
+    const char *getFrameData(uint8_t no) const;
+    virtual std::string toPrettyString(const uint8_t indent = 0, const uint8_t detail = 3) const;
+  };
+}
+