OggFile.h

#pragma once

#include "..\BaseSplitter\BaseSplitter.h"

#pragma pack(push, 1)
struct OggPageHeader
{
        DWORD capture_pattern;
        BYTE stream_structure_version;
        BYTE header_type_flag; enum {continued=1, first=2, last=4};
        __int64 granule_position;
        DWORD bitstream_serial_number;
        DWORD page_sequence_number;
        DWORD CRC_checksum;
        BYTE number_page_segments;
};
struct OggVorbisIdHeader
{
        DWORD vorbis_version;
        BYTE audio_channels;
        DWORD audio_sample_rate;
        DWORD bitrate_maximum;
        DWORD bitrate_nominal;
        DWORD bitrate_minimum;
        BYTE blocksize_0:4;
        BYTE blocksize_1:4;
        BYTE framing_flag;
};
struct OggVideoHeader
{
        DWORD w, h;
};
struct OggAudioHeader
{
        WORD nChannels, nBlockAlign;
        DWORD nAvgBytesPerSec;
};
struct OggStreamHeader
{
        char streamtype[8], subtype[4];
        DWORD size;
        __int64 time_unit, samples_per_unit;
        DWORD default_len;
    DWORD buffersize;
        WORD bps;
        WORD alignmentfix1;
    union {OggVideoHeader v; OggAudioHeader a;};
        DWORD alignmentfix2;
};
#pragma pack(pop)

class OggPage : public CArray<BYTE>
{
public:
        OggPageHeader m_hdr;
        CList<int> m_lens;
        OggPage() {memset(&m_hdr, 0, sizeof(m_hdr));}
};

class COggFile : public CBaseSplitterFile
{
        using CBaseSplitterFile::Read;

        HRESULT Init();

public:
        COggFile(IAsyncReader* pAsyncReader, HRESULT& hr);

        bool Sync(HANDLE hBreak = NULL);
        bool Read(OggPageHeader& hdr, HANDLE hBreak = NULL);
        bool Read(OggPage& page, bool fFull = true, HANDLE hBreak = NULL);
};

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