56dc1ffd50
Fixed wxStreamBuffer to support features of wxMemoryOutputStream wxMMedia2 updates (various fixes) git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4406 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
127 lines
3.1 KiB
C++
127 lines
3.1 KiB
C++
// --------------------------------------------------------------------------
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// Name: sndbase.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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// --------------------------------------------------------------------------
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#ifndef _WX_SNDBASE_H
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#define _WX_SNDBASE_H
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#ifdef __GNUG__
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#pragma interface "sndbase.h"
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#endif
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#include <wx/defs.h>
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enum {
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wxSOUND_INPUT = 1,
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wxSOUND_OUTPUT = 2,
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wxSOUND_DUPLEX = wxSOUND_INPUT | wxSOUND_OUTPUT,
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};
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typedef enum {
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wxSOUND_NOFORMAT,
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wxSOUND_PCM,
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wxSOUND_ULAW,
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wxSOUND_G72X
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} wxSoundFormatType;
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typedef enum {
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wxSOUND_NOERR,
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wxSOUND_IOERR,
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wxSOUND_INVFRMT,
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wxSOUND_INVDEV,
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wxSOUND_NOTEXACT,
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wxSOUND_INVSTRM,
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wxSOUND_NOCODEC,
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wxSOUND_MEMERR
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} wxSoundError;
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class WXDLLEXPORT wxSoundStream;
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typedef void (*wxSoundCallback)(wxSoundStream *stream, int evt,
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char *cdata);
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//
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// Base class for sound format specification
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//
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class WXDLLEXPORT wxSoundFormatBase {
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public:
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wxSoundFormatBase();
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virtual ~wxSoundFormatBase();
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virtual wxSoundFormatType GetType() const { return wxSOUND_NOFORMAT; }
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virtual wxSoundFormatBase *Clone() const;
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virtual wxUint32 GetTimeFromBytes(wxUint32 bytes) const = 0;
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virtual wxUint32 GetBytesFromTime(wxUint32 time) const = 0;
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virtual bool operator !=(const wxSoundFormatBase& frmt2) const;
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};
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//
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// Base class for sound streams
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//
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class wxSoundStream {
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public:
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wxSoundStream();
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virtual ~wxSoundStream();
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// Reads "len" bytes from the sound stream.
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virtual wxSoundStream& Read(void *buffer, wxUint32 len) = 0;
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// Writes "len" byte to the sound stream.
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virtual wxSoundStream& Write(const void *buffer, wxUint32 len) = 0;
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// Returns the best size for IO calls
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virtual wxUint32 GetBestSize() const { return 1024; }
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// SetSoundFormat returns TRUE when the format can be handled.
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virtual bool SetSoundFormat(const wxSoundFormatBase& format);
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// GetSoundFormat returns the current sound format.
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wxSoundFormatBase& GetSoundFormat() const { return *m_sndformat; }
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// Register a callback for a specified async event.
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void Register(int evt, wxSoundCallback cbk, char *cdata);
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// Starts the async notifier.
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virtual bool StartProduction(int evt) = 0;
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// Stops the async notifier.
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virtual bool StopProduction() = 0;
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// Sets the event handler: if it is non-null, all events are routed to it.
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void SetEventHandler(wxSoundStream *handler) { m_handler = handler; }
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// Initializes the full duplex mode.
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virtual void SetDuplexMode(bool duplex) = 0;
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wxSoundError GetError() const { return m_snderror; }
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wxUint32 GetLastAccess() const { return m_lastcount; }
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// This is only useful for device (I think).
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virtual bool QueueFilled() const { return TRUE; }
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protected:
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// Current sound format
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wxSoundFormatBase *m_sndformat;
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// Last error
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wxSoundError m_snderror;
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// Last access
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wxUint32 m_lastcount;
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// Event handler
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wxSoundStream *m_handler;
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wxSoundCallback m_callback[2];
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char *m_cdata[2];
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protected:
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// Handles event
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virtual void OnSoundEvent(int evt);
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};
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#endif
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