86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
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// --------------------------------------------------------------------------
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// Name: sndg72x.h
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// Purpose:
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// Date: 08/26/1999
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// Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999
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// CVSID: $Id$
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// --------------------------------------------------------------------------
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#ifndef _WX_SNDG72X_H
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#define _WX_SNDG72X_H
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#ifdef __GNUG__
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#pragma interface "sndg72x.h"
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#endif
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#include "wx/defs.h"
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#include "wx/mmedia/sndbase.h"
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#include "wx/mmedia/sndcodec.h"
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#include "wx/mmedia/sndbase.h"
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typedef enum {
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wxSOUND_G721,
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wxSOUND_G723_24,
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wxSOUND_G723_40
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} wxSoundG72XType;
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// This fixes a bug in Mingw95
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typedef struct g72x_state g72state;
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//
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// G72X format
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//
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class WXDLLEXPORT wxSoundFormatG72X: public wxSoundFormatBase {
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public:
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wxSoundFormatG72X();
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~wxSoundFormatG72X();
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void SetG72XType(wxSoundG72XType type);
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wxSoundG72XType GetG72XType() const { return m_g72x_type; }
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void SetSampleRate(wxUint32 srate);
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wxUint32 GetSampleRate() const;
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wxSoundFormatType GetType() const { return wxSOUND_G72X; }
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wxSoundFormatBase *Clone() const;
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wxUint32 GetTimeFromBytes(wxUint32 bytes) const;
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wxUint32 GetBytesFromTime(wxUint32 time) const;
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bool operator !=(const wxSoundFormatBase& frmt2) const;
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protected:
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wxUint32 m_srate;
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wxSoundG72XType m_g72x_type;
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};
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//
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// ULAW converter class
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//
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class WXDLLEXPORT wxSoundRouterStream;
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class WXDLLEXPORT wxSoundStreamG72X: public wxSoundStreamCodec {
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public:
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wxSoundStreamG72X(wxSoundStream& sndio);
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~wxSoundStreamG72X();
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wxSoundStream& Read(void *buffer, wxUint32 len);
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wxSoundStream& Write(const void *buffer, wxUint32 len);
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bool SetSoundFormat(const wxSoundFormatBase& format);
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protected:
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wxSoundRouterStream *m_router;
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wxUint8 m_n_bits, m_current_mask, m_current_b_pos, m_current_byte;
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wxUint8 *m_io_buffer;
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g72state *m_state;
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int (*m_coder)(int code, int in_code, struct g72x_state *state);
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int (*m_decoder)(int code, int out_code, struct g72x_state *state);
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protected:
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void PutBits(wxUint8 bits);
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wxUint8 GetBits();
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};
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#endif
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