cWaveACM.h

Go to the documentation of this file.

//
//
 
#ifndef _INC_cWaveACM_H
#define _INC_cWaveACM_H
#ifndef NO_PRAGMA_ONCE
#pragma once
#endif
 
#include "cWaveFormat.h"
 
#if defined(_WIN32) && defined(_MSC_VER)
#include "GrayCore/include/cSingleton.h"
#include "GrayCore/include/cOSModule.h"
#include "GrayCore/include/cHandlePtr.h"
#include "GrayCore/include/cStream.h"
 
#include <msacm.h>
 
namespace Gray
{
        template <> inline void cHandlePtr<HACMSTREAM>::CloseHandle(HACMSTREAM h) // static
        {
                ::acmStreamClose(h, 0);
        }
}
 
namespace GrayLib
{
        class GRAYLIB_LINK cWaveACM
        : public cSingleton<cWaveACM>
        {
                friend class cSingleton<cWaveACM>;
                CHEAPOBJECT_IMPL;
 
        private:
                bool m_bGetVersion;     
 
        public:
#ifdef UNDER_CE
                typedef wchar_t CHAR_t;
                typedef struct tACMFORMATTAGDETAILSW FORMATTAGDETAILS_t;
#else
                typedef GChar_t CHAR_t;
                typedef _GTN(::ACMFORMATTAGDETAILS) FORMATTAGDETAILS_t;
#endif
 
        protected:
                cWaveACM();
                ~cWaveACM();
 
        public:
                bool isACMAttached() const noexcept
                {
                        // Is init ? StartupACM
                        return m_bGetVersion ;
                }
 
                // MUST call this before using the ACM API calls.
                bool StartupACM();
                void ShutdownACM();
 
#ifndef UNDER_CE
                int FormatDlg(HWND hwnd, cWaveFormat& Form, const CHAR_t* pszTitle, UINT dwEnum);
#endif
 
                HRESULT GetFormatDetails(const cWaveFormatEx* pForm, FORMATTAGDETAILS_t& details);
 
                UNITTEST_FRIEND(cWaveACM);
        };
 
        class GRAYLIB_LINK cWaveACMInst : public cSoundBase
        {
 
        public:
                cHandlePtr<HACMSTREAM> m_hStream;               
 
                cWaveFormat m_SrcForm;
                cWaveFormat m_DstForm;
 
                // Async ACM Compression conversion.
                // Progress in the stream.
                WAVE_BLOCKS_t m_SrcIndex;
                WAVE_BLOCKS_t m_DstIndex;
                int     m_iBuffers;                     
                HRESULT m_hResStop;                     
 
        public:
                cWaveACMInst();
                ~cWaveACMInst();
 
                HRESULT StreamOpen();
                void StreamClose();
        };
 
        class GRAYLIB_LINK cWaveACMEnc : public cStreamOutput, public cWaveACMInst
        {
        };
        class GRAYLIB_LINK cWaveACMDec : public cStreamInput, public cWaveACMInst
        {
        };
};
#endif  // _WIN32
#endif  // _INC_cWaveACM_H