RageSoundReader_MP3.h

/* RageSoundReader_MP3 - An interface to read MP3s via MAD. */
 
#ifndef RAGE_SOUND_READER_MP3_H
#define RAGE_SOUND_READER_MP3_H
 
#include "RageSoundReader_FileReader.h"
#include "RageUtil/File/RageFile.h"
 
struct madlib_t;
 
typedef unsigned long id3_length_t;
 
signed long
id3_tag_query(const unsigned char* data, id3_length_t length);
void
fill_frame_index_cache(madlib_t* mad);
 
class RageSoundReader_MP3 : public RageSoundReader_FileReader
{
  public:
    OpenResult Open(RageFileBasic* pFile) override;
    void Close();
    int GetLength() const override { return GetLengthConst(false); }
    int GetLength_Fast() const override { return GetLengthConst(true); }
    int SetPosition(int iSample) override;
    int Read(float* pBuf, int iFrames) override;
    unsigned GetNumChannels() const override { return Channels; }
    int GetSampleRate() const override { return SampleRate; }
    int GetNextSourceFrame() const override;
    bool SetProperty(const std::string& sProperty, float fValue) override;
 
    RageSoundReader_MP3();
    ~RageSoundReader_MP3();
    RageSoundReader_MP3(
      const RageSoundReader_MP3&); /* not defined; don't use */
    RageSoundReader_MP3* Copy() const override;
 
  private:
    int SampleRate;
    int Channels;
    bool m_bAccurateSync;
 
    madlib_t* mad;
 
    bool MADLIB_rewind();
    int SetPosition_toc(int iSample, bool Xing);
    int SetPosition_hard(int iSample);
    int SetPosition_estimate(int iSample);
 
    int fill_buffer();
    int do_mad_frame_decode(bool headers_only = false);
    int resync();
    void synth_output();
    int seek_stream_to_byte(int byte);
    bool handle_first_frame();
    int GetLengthInternal(bool fast);
    int GetLengthConst(bool fast) const;
};
 
#endif