05aa8cf3ef
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@30704 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
128 lines
3.9 KiB
C++
128 lines
3.9 KiB
C++
// --------------------------------------------------------------------------
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// Name: sndfile.h
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// Purpose:
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// Date: 08/11/1999
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// Author: Guilhem Lavaux <lavaux@easynet.fr> (C) 1999
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// CVSID: $Id$
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// License: wxWindows license
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// --------------------------------------------------------------------------
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#ifndef _WX_SNDFILE_H
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#define _WX_SNDFILE_H
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#include "wx/defs.h"
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#include "wx/stream.h"
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#include "wx/mmedia/defs.h"
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#include "wx/mmedia/sndbase.h"
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#include "wx/mmedia/sndcodec.h"
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#define wxSOUND_INFINITE_TIME ((wxUint32)-1)
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//
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// Codec router class
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//
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class WXDLLIMPEXP_MMEDIA wxSoundRouterStream: public wxSoundStreamCodec {
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public:
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wxSoundRouterStream(wxSoundStream& sndio);
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~wxSoundRouterStream();
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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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bool StartProduction(int evt);
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bool StopProduction();
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wxUint32 GetBestSize() const;
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protected:
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wxSoundStream *m_router;
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};
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typedef enum {
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wxSOUND_FILE_STOPPED,
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wxSOUND_FILE_PAUSED,
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wxSOUND_FILE_PLAYING,
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wxSOUND_FILE_RECORDING
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} wxSoundFileState;
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//
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// Base class for file coders/decoders
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//
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class wxSoundFileStream: public wxSoundStream {
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public:
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wxSoundFileStream(wxInputStream& stream, wxSoundStream& io_sound);
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wxSoundFileStream(wxOutputStream& stream, wxSoundStream& io_sound);
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~wxSoundFileStream();
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// Usual sound file calls (Play, Stop, ...)
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bool Play();
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bool Record(wxUint32 time);
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bool Stop();
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bool Pause();
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bool Resume();
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// Functions which return the current state
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bool IsStopped() const { return m_state == wxSOUND_FILE_STOPPED; }
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bool IsPaused() const { return m_state == wxSOUND_FILE_PAUSED; }
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// A user should not call these two functions.
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// Several things must be done before calling them.
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// Users should use Play(), ...
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bool StartProduction(int evt);
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bool StopProduction();
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// These three functions deals with the length, the position in the sound file.
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// All the values are expressed in bytes. If you need the values expressed
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// in terms of time, you have to use GetSoundFormat().GetTimeFromBytes(...)
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wxUint32 GetLength();
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wxUint32 GetPosition();
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wxUint32 SetPosition(wxUint32 new_position);
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// These two functions use the sound format specified by GetSoundFormat().
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// All samples must be encoded in that format.
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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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// This function set the sound format of the file. !! It must be used only
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// when you are in output mode (concerning the file) !! If you are in
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// input mode (concerning the file) you can't use this function to modify
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// the format of the samples returned by Read() !
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// For this action, you must use wxSoundRouterStream applied to wxSoundFileStream.
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bool SetSoundFormat(const wxSoundFormatBase& format);
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// This function returns the Codec name. This is useful for those who want to build
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// a player (But also in some other case).
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virtual wxString GetCodecName() const;
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// You should use this function to test whether this file codec can read
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// the stream you passed to it.
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virtual bool CanRead() { return false; }
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protected:
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wxSoundRouterStream m_codec;
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wxSoundStream *m_sndio;
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wxInputStream *m_input;
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wxOutputStream *m_output;
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wxSoundFileState m_state, m_oldstate;
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wxUint32 m_length, m_bytes_left;
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bool m_prepared;
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protected:
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virtual bool PrepareToPlay() = 0;
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virtual bool PrepareToRecord(wxUint32 time) = 0;
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virtual bool FinishRecording() = 0;
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virtual bool RepositionStream(wxUint32 position) = 0;
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void FinishPreparation(wxUint32 len);
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virtual wxUint32 GetData(void *buffer, wxUint32 len) = 0;
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virtual wxUint32 PutData(const void *buffer, wxUint32 len) = 0;
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void OnSoundEvent(int evt);
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};
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#endif
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