basic_audio_render.h

audio-video-codecs.rar语音编解码器

/*
//
//                  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) 2003-2007 Intel Corporation. All Rights Reserved.
//
*/

#ifndef __BASIC_AUDIO_RENDER_H__
#define __BASIC_AUDIO_RENDER_H__

#include "umc_audio_render.h"
#include "umc_cyclic_buffer.h"
#include "umc_thread.h"
#include "umc_event.h"

namespace UMC
{
    class BasicAudioRender: public AudioRender
    {
        DYNAMIC_CAST_DECL(BasicAudioRender, AudioRender)
    public:
        BasicAudioRender();
        virtual ~BasicAudioRender();

        virtual Status Init(MediaReceiverParams* pInit);
        virtual Status Close();
        /* to feed the renderer with audio data */
        virtual Status LockInputBuffer(MediaData *in);
        virtual Status UnLockInputBuffer(MediaData *in, Status StreamStatus = UMC_OK);
        /* to reset internal buffer with audio data */
        virtual Status Reset();
        /* to stop rendering (to kill internal thread) */
        virtual Status Stop();
        /* to render the rest of audio data be kept in buffer */
        virtual Status Pause(bool pause);

        virtual Ipp64f GetTime();
        virtual Ipp64f GetDelay();

        void ThreadProc();

        virtual Status SetParams(MediaReceiverParams *params,
                                 Ipp32u trickModes = UMC_TRICK_MODES_NO);

    protected:
        LinearBuffer m_DataBuffer;
        virtual Ipp64f GetTimeTick() = 0;
        virtual Status GetTimeTick(Ipp64f pts);
        /* to render the rest of audio data be kept in buffer */
        virtual Status DrainBuffer() { return UMC_OK; }

        Ipp64f  m_dfNorm;
        vm_tick m_tStartTime;
        vm_tick m_tStopTime;
        vm_tick m_tFreq;
        Thread  m_Thread;
        bool    m_bStop;
        bool    m_bPause;

        UMC::Event m_eventSyncPoint;
        UMC::Event m_eventSyncPoint1;

        bool    m_RendererIsStopped;
        Ipp32s  m_wInitedChannels;
        Ipp32s  m_dwInitedFrequency;
        Ipp64f  m_dDynamicChannelPTS;
        Ipp32s  m_wDynamicChannels;

    }; // class BasicAudioRender

} // namespace UMC

#endif // __BASIC_AUDIO_RENDER_H__