projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| 4d6306eb GL |
1 | #ifndef __SNDFRMT_H__ |
| 2 | #define __SNDFRMT_H__ | |
| 3 | ||
| 4 | #ifdef __GNUG__ | |
| 5 | #pragma interface | |
| 6 | #endif | |
| 7 | ||
| 8 | #include <wx/object.h> | |
| 9 | ||
| 10 | class wxSndBuffer; | |
| 11 | ||
| 12 | // Standard Microsoft types (why change ?) | |
| 13 | #define WXSOUND_PCM 0x0001 | |
| 14 | #define WXSOUND_ADPCM 0x0002 | |
| 15 | #define WXSOUND_ALAW 0x0006 | |
| 16 | #define WXSOUND_ULAW 0x0007 | |
| 17 | ||
| 18 | class wxSoundCodec; | |
| 19 | class wxSoundDataFormat { | |
| 20 | public: | |
| 21 | wxSoundDataFormat(); | |
| 22 | ~wxSoundDataFormat(); | |
| 23 | ||
| 24 | void SetSampleRate(int srate) { m_srate = srate; } | |
| 25 | void SetChannels(int channels); | |
| 26 | void SetStereo(bool on); | |
| 27 | void SetCodecNo(int no); | |
| 28 | void SetCodecCreate(bool create) { m_codcreate = create; } | |
| 29 | ||
| 30 | int GetSampleRate() const { return m_srate; } | |
| 31 | int GetChannels() const { return m_channels; } | |
| 32 | bool GetStereo() const { return (m_channels == 2); } | |
| 33 | int GetCodecNo() const { return m_codno; } | |
| 34 | ||
| 35 | wxSoundCodec *GetCodec(); | |
| 36 | ||
| 37 | wxSoundDataFormat& operator =(const wxSoundDataFormat& format); | |
| 38 | bool operator ==(const wxSoundDataFormat& format) const; | |
| 39 | bool operator !=(const wxSoundDataFormat& format) const | |
| 40 | { return !(operator ==(format)); } | |
| 41 | ||
| 42 | /// PCM format | |
| 43 | void SetByteOrder(int order); | |
| 44 | void SetSign(int sign); | |
| 45 | int GetByteOrder() const { return m_byteorder; } | |
| 46 | int GetSign() const { return m_sign; } | |
| 47 | ||
| 48 | void SetBps(int bps); | |
| 49 | int GetBps() const { return m_bps; } | |
| 50 | ||
| 51 | protected: | |
| 52 | void CodecChange(); | |
| 53 | ||
| 54 | protected: | |
| 55 | int m_srate, m_bps, m_channels, m_codno; | |
| 56 | int m_byteorder, m_sign; | |
| 57 | bool m_codchange, m_codcreate; | |
| 58 | wxSoundCodec *m_codec; | |
| 59 | }; | |
| 60 | ||
| 61 | class wxSoundCodec : public wxObject, public wxStreamBase { | |
| 62 | DECLARE_ABSTRACT_CLASS(wxSoundCodec) | |
| 63 | public: | |
| 64 | wxSoundCodec(); | |
| 65 | virtual ~wxSoundCodec(); | |
| 66 | ||
| 67 | void SetIOBuffer(wxSndBuffer *sndbuf) { m_io_sndbuf = sndbuf; } | |
| 68 | size_t Available(); | |
| 69 | ||
| 70 | void InitIO(const wxSoundDataFormat& format); | |
| 71 | void InitMode(int mode); | |
| 72 | void ExitMode(); | |
| 73 | ||
| 74 | inline void SetInStream(wxStreamBuffer *s) | |
| 75 | { m_in_sound = s; } | |
| 76 | inline void SetOutStream(wxStreamBuffer *s) | |
| 77 | { m_out_sound = s; } | |
| 78 | inline wxStreamBuffer *GetInStream() const { return m_in_sound; } | |
| 79 | inline wxStreamBuffer *GetOutStream() const { return m_out_sound; } | |
| 80 | ||
| 81 | inline bool Good() const { return (m_in_sound->Stream()->LastError() == wxStream_NOERROR) && (m_out_sound->Stream()->LastError() == wxStream_NOERROR); } | |
| 82 | ||
| 83 | virtual size_t GetByteRate() const = 0; | |
| 84 | virtual wxSoundDataFormat GetPreferredFormat(int codec = 0) const = 0; | |
| 85 | ||
| 86 | virtual void Decode() = 0; | |
| 87 | virtual void Encode() = 0; | |
| 88 | ||
| 89 | static wxSoundCodec *Get(int no); | |
| 90 | ||
| 91 | protected: | |
| 92 | void CopyToOutput(); | |
| 93 | ||
| 94 | unsigned short Convert8_16(unsigned char s) { return (s & 0xff) << 8; } | |
| 95 | unsigned char Convert16_8(unsigned short s) { return (s & 0xff00) >> 8; } | |
| 96 | ||
| 97 | bool ChainCodecBefore(wxSoundDataFormat& cod_to); | |
| 98 | bool ChainCodecAfter(wxSoundDataFormat& cod_to); | |
| 99 | ||
| 100 | // ------------- | |
| 101 | // wxStream part | |
| 102 | // ------------- | |
| 103 | size_t OnSysWrite(const void *buffer, size_t bsize); | |
| 104 | size_t OnSysRead(void *buffer, size_t bsize); | |
| 105 | ||
| 106 | protected: | |
| 107 | wxSndBuffer *m_io_sndbuf; | |
| 108 | wxSoundDataFormat m_io_format; | |
| 109 | wxStreamBuffer *m_in_sound, *m_out_sound; | |
| 110 | wxSoundCodec *m_chain_codec; | |
| 111 | bool m_init, m_chain_before; | |
| 112 | ||
| 113 | enum { | |
| 114 | ENCODING = 0, | |
| 115 | DECODING | |
| 116 | } m_mode; | |
| 117 | }; | |
| 118 | ||
| 119 | #endif |