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163 lines
6.4 KiB
C++
163 lines
6.4 KiB
C++
/*****************************************************************************
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** **
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** Neversoft Entertainment **
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** **
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** Copyright (C) 1999 - All Rights Reserved **
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** **
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******************************************************************************
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** **
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** Project: GEL (Game Engine Library) **
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** **
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** Module: Game Engine **
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** **
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** File name: p_wmafilesteam.h **
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** **
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** Created: 01/27/2003 - dc **
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** **
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*****************************************************************************/
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#ifndef __P_WMAFILESTREAM_H
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#define __P_WMAFILESTREAM_H
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/*****************************************************************************
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** Includes **
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*****************************************************************************/
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/*****************************************************************************
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** Defines **
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*****************************************************************************/
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// Define the maximum amount of packets we will ever submit to the renderer.
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#define WMASTRM_PACKET_COUNT 8
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namespace Pcm
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{
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/*****************************************************************************
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** Class Definitions **
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*****************************************************************************/
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/******************************************************************/
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/* */
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/* WMA file streaming object, designed for fully asynchronous */
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/* streaming from disc. */
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/* Note that WMA decompression does incur a CPU overhead. */
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/* */
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/******************************************************************/
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class CWMAFileStream : public Spt::Class
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{
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private:
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HANDLE m_hFile;
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HANDLE m_hThread;
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OVERLAPPED* m_pOverlapped; // OVERLAPPED structure for asynchronous file access.
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bool m_FirstRead; // Flag to indicate first request for more data to be streamed from disc.
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bool m_ReadComplete;
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int m_SuccessiveReads; // Counts how many read operations performed in total.
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bool m_bUseWAD;
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bool m_bUse3D; // Sets whether 2D or 3D mixbins are set up.
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uint32 m_dwWADOffset;
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uint32 m_dwWADLength;
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public:
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IDirectSoundStream* m_pRenderFilter; // Render (DirectSoundStream) filter
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LPVOID m_pvSourceBuffer; // Source filter data buffer
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LPVOID m_pvRenderBuffer; // Render filter data buffer
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uint32 m_adwPacketStatus[WMASTRM_PACKET_COUNT]; // Packet status array
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uint32 m_dwStartingDataOffset; // Offset into wma file where data begins.
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uint32 m_dwPercentCompleted; // Percent completed
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bool m_Paused;
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bool m_Completed; // For single-shot, indicates loading of final packet to renderer is completed
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uint32 m_LastPacket; // Last packet array index
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bool m_SetDeferredVolume;
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bool m_SetDeferredVolumeLR;
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bool m_SetDeferredVolume5Channel;
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bool m_bOkayToPlay; // Used when exact syncing is required - will load buffers but won't start decompression until this flag is true.
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float m_DeferredVolume[5];
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uint32 m_Mixbins; // Bitfield indicating which mixbins are active for this buffer.
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uint32 m_NumMixbins;
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// Packet processing
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bool FindFreePacket( uint32* pdwPacketIndex );
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bool FindRenderablePacket( uint32* pdwPacketIndex );
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HRESULT ProcessSource( uint32 dwPacketIndex );
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HRESULT ProcessRenderer( uint32 dwPacketIndex );
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WAVEFORMATEX m_wfxSourceFormat;
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XFileMediaObject* m_pSourceFilter; // Source (wave file) filter
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LPVOID m_pFileBuffer; // Buffer for async read of raw data.
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int m_FileBytesRead; // Total number of raw bytes read from disc.
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int m_FileBytesProcessed; // Total number of raw bytes processed by XMO.
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int m_DecoderCreation;
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bool m_AwaitingDeletion;
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// Processing
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HRESULT Process();
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// Initialization
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HRESULT Initialize( HANDLE h_file, unsigned int offset, unsigned int length, void* fileBuffer );
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HRESULT Initialize( HANDLE h_file, void* fileBuffer );
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HRESULT PostInitialize( void );
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void CreateSourceBuffer( void );
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// Play control
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void Pause( uint32 dwPause );
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void SetVolume( float volume );
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void SetVolume( float volumeL, float volumeR );
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void SetVolume( float v0, float v1, float v2, float v3, float v4 );
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void SetDeferredVolume( void );
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// Query
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IDirectSoundStream* GetSoundStream( void ) { return m_pRenderFilter; }
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bool IsCompleted( void ) { return ( m_Completed && ( XMEDIAPACKET_STATUS_PENDING != m_adwPacketStatus[m_LastPacket] )); }
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bool IsSafeToDelete( void );
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bool PreLoadDone( void );
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// Asynchronous stuff.
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void AsyncRead( void );
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CWMAFileStream( bool use_3d = false );
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~CWMAFileStream();
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};
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/*****************************************************************************
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** Private Declarations **
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*****************************************************************************/
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/*****************************************************************************
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** Private Prototypes **
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*****************************************************************************/
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/*****************************************************************************
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** Public Declarations **
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*****************************************************************************/
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/*****************************************************************************
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** Public Prototypes **
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*****************************************************************************/
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/*****************************************************************************
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** Inline Functions **
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*****************************************************************************/
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/******************************************************************/
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/* */
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/* */
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/******************************************************************/
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} // namespace Pcm
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#endif // __P_WMAFILESTREAM_H
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