directsound_render.h

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/*//////////////////////////////////////////////////////////////////////////////
//
//                  INTEL CORPORATION PROPRIETARY INFORMATION
//     This software is supplied under the terms of a license agreement or
//     nondisclosure agreement with Intel Corporation and may not be copied
//     or disclosed except in accordance with the terms of that agreement.
//          Copyright(c) 2003-2005 Intel Corporation. All Rights Reserved.
//
*/

#ifdef UMC_ENABLE_DSOUND_AUDIO_RENDER

#ifndef __DIRECT_SOUND_RENDER_H__
#define __DIRECT_SOUND_RENDER_H__

#include <dplay.h>
#include <dsound.h>
#include "umc_structures.h"
#include "basic_audio_render.h"
#include "pts_buf.h"
#include "dsound_buf.h"

namespace UMC
{
    class DSoundAudioRender:public BasicAudioRender
    {
    public:
        virtual Status  Init(MediaReceiverParams* pInit);
        virtual Status  SendFrame(MediaData* in);
        virtual Status  Pause(bool);

        // Render manipulating
        virtual float    SetVolume(float volume);   /* 0-silence 1-max, return previous volume */
        virtual float    GetVolume();

        virtual Status  Close (void);
        virtual Status  Reset (void);

        DSoundAudioRender();
        virtual ~DSoundAudioRender(void);

        virtual Status  SetParams(MediaReceiverParams *params);
    protected:
        static const unsigned int m_cuiSizeOfFrame;
        static const unsigned int m_cuiNumOfFrames;

        HANDLE              m_hTimer;
        BufPTSArray         m_AudioPtsArray;
        DSBuffer            m_DSBuffer;
        DWORD               m_dwSampleAlign;

        virtual double GetTimeTick(void);
    };  //class DirectSoundRender
};  //  namespace UMC

#endif //  __DIRECT_SOUND_RENDER_H__

#endif