chxclientplayer.cpp

linux下的一款播放器

/* ***** BEGIN LICENSE BLOCK *****
 * Source last modified: $Id: CHXClientPlayer.cpp,v 1.25.2.5 2004/07/09 01:49:47 hubbe Exp $
 * 
 * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
 * 
 * The contents of this file, and the files included with this file,
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 * Source License (the "RPSL") available at
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 * the file under the current version of the RealNetworks Community
 * Source License (the "RCSL") available at
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 * will apply. You may also obtain the license terms directly from
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 * to this file, the RCSL.  Please see the applicable RPSL or RCSL for
 * the rights, obligations and limitations governing use of the
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 * use your version of this file under the terms of any one of the
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 * 
 * This file is part of the Helix DNA Technology. RealNetworks is the
 * developer of the Original Code and owns the copyrights in the
 * portions it created.
 * 
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 * ENJOYMENT OR NON-INFRINGEMENT.
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 * ***** END LICENSE BLOCK ***** */

#include "CHXClientPlayer.h"
#include "CHXClientSink.h"
#include "CHXEQProcessor.h"
#include "CHXClientBuffer.h"
#include "CHXClientRequest.h"
#include "CHXClientDataStream.h"
#include "CHXFlatArray.h"
#include "CHXClientDebug.h"

#if defined(HELIX_FEATURE_REGISTRY) && defined(HELIX_FEATURE_STATS)
#include "CHXStatisticTracker.h"
#endif

#ifdef HELIX_FEATURE_VIDEO
#include "CHXClientSiteSupplier.h"
#endif

#include "enter_hx_headers.h"
#include "hxfiles.h" /* IHXRequest */
#include "ihxpckts.h"
#include "hxcore.h"
#include "hxgroup.h"
#include "hxvsrc.h"

#include "hxsmartptr.h"
HX_SMART_POINTER_INLINE( SPIHXBuffer, IHXBuffer );
HX_SMART_POINTER_INLINE( SPIHXValues, IHXValues );
HX_SMART_POINTER_INLINE( SPIHXRequest, IHXRequest );
HX_SMART_POINTER_INLINE( SPIHXAudioPlayer, IHXAudioPlayer );
HX_SMART_POINTER_INLINE( SPIHXPlayer2, IHXPlayer2 );
HX_SMART_POINTER_INLINE( SPIHXGroup, IHXGroup );
HX_SMART_POINTER_INLINE( SPIHXGroupManager, IHXGroupManager );
HX_SMART_POINTER_INLINE( SPIHXViewSourceCommand, IHXViewSourceCommand );
HX_SMART_POINTER_INLINE( SPIHXClientViewRights, IHXClientViewRights );
#include "exit_hx_headers.h"

#include "HXClientConstants.h"
#include "hlxclib/string.h"
#include "hlxclib/stdlib.h"
#include "hlxclib/ctype.h"

static UINT32 const kMinimumDataSize = 3; // Enough for the old RA3 header ( ".ra" ).
static const char* const kUnsupportedMimeTypes[] = { "text/html", NULL };
static const char* const kProtocolMemFS = "mem://"; // XXXSEH: Access from a common header.
static IHXStreamSource* const kCurrentStream = NULL;

CHXClientPlayer::~CHXClientPlayer( void )
{
	Stop();
	HX_RELEASE( m_pIOpenedRequest );
	if ( m_pDataStreams )
	{
		CHXClientDataStream* pDataStream = NULL;
		while ( m_pDataStreams->Pop( &pDataStream ) )
		{
			delete pDataStream;
			pDataStream = NULL;
		}
		delete m_pDataStreams;
		m_pDataStreams = NULL;
	}
#if defined(HELIX_FEATURE_REGISTRY) && defined(HELIX_FEATURE_STATS)
	if ( m_pStatisticTracker )
	{
		CHXStatisticTracker::DestroyPlayerStatisticTracker( m_pStatisticTracker );
		m_pStatisticTracker = NULL;
	}
#endif
	if ( m_pEQProcessor )
	{
		m_pEQProcessor->UnhookAudio();
		m_pEQProcessor->Release();
		m_pEQProcessor = NULL;
	}
	HX_RELEASE( m_pIClientVolume );
	
	// XXXSEH: There is no way to clear the client context from the Player.
	HX_RELEASE( m_pClientContext );

#ifdef HELIX_FEATURE_VIDEO
	HX_RELEASE( m_SiteSupplier );
#endif

	if ( m_pClipSink )
	{
		SPIHXGroupManager spGroupManager = m_pIHXCorePlayer;
		if ( spGroupManager.IsValid() )
		{
			spGroupManager->RemoveSink( m_pClipSink );
		}
		m_pIHXCorePlayer->RemoveAdviseSink( m_pClipSink );
		m_pClipSink->Destroy();
		HX_RELEASE( m_pClipSink );
	}
	m_pIHXClientEngine->ClosePlayer( m_pIHXCorePlayer );
	m_pIHXCorePlayer->Release();
	m_pIHXClientEngine->Release();
}

CHXClientPlayer::CHXClientPlayer( IHXClientEngine* pIHXClientEngine, IHXPlayer* pIHXPlayer )
	: IHXClientPlayer()
	, m_pIHXClientEngine( pIHXClientEngine )
	, m_pIHXCorePlayer( pIHXPlayer )
	, m_pIClientVolume( NULL )
	, m_pClipSink( NULL )
	, m_pClientContext( NULL )
	, m_pEQProcessor( NULL )
#if defined(HELIX_FEATURE_REGISTRY) && defined(HELIX_FEATURE_STATS)
	, m_pStatisticTracker( NULL )
#endif
#ifdef HELIX_FEATURE_VIDEO
	, m_SiteSupplier( NULL )
#endif
	, m_PendingSeekPosition( kInvalidSeekPosition )
	, m_pDataStreams( NULL )
	, m_pIOpenedRequest( NULL )
	, m_IsActivelySeeking( false )
{
	CHXASSERT( m_pIHXClientEngine );
	CHXASSERT( m_pIHXCorePlayer );

	m_pIHXClientEngine->AddRef();
	m_pIHXCorePlayer->AddRef();
}

bool
CHXClientPlayer::Init( HXxWindow* pHXxWindow, void* userInfo, const HXClientCallbacks* pClientCallbacks )
{
	m_pClipSink = new CHXClientSink( m_pIHXCorePlayer, userInfo, pClientCallbacks );
	m_pClipSink->AddRef();
	m_pClipSink->Init();
	m_pIHXCorePlayer->AddAdviseSink( m_pClipSink );
	SPIHXGroupManager spGroupManager = m_pIHXCorePlayer;
	if ( spGroupManager.IsValid() )
	{
		spGroupManager->AddSink( m_pClipSink );
	}
	IUnknown* pIUnkSiteSupplier = NULL;
#ifdef HELIX_FEATURE_VIDEO
	m_SiteSupplier = new CHXClientSiteSupplier( m_pIHXCorePlayer, pHXxWindow, userInfo, pClientCallbacks );
	m_SiteSupplier->AddRef();
	pIUnkSiteSupplier = m_SiteSupplier;
#endif
	m_pClientContext = CreateClientContext( this, pIUnkSiteSupplier, m_pClipSink->GetUnknown(), userInfo, pClientCallbacks );
	m_pIHXCorePlayer->SetClientContext( m_pClientContext->GetUnknown() );

	SPIHXAudioPlayer spAudioPlayer = m_pIHXCorePlayer;
	if ( spAudioPlayer.IsValid() )
	{
		// XXXSEH: GetDeviceVolume() affects the entire application, but its effects are instant.
		// GetAudioVolume() affects each player instance separately, but their effect is delayed.
		//m_pIClientVolume = spAudioPlayer->GetAudioVolume();
		m_pIClientVolume = spAudioPlayer->GetDeviceVolume();
	}
	m_pEQProcessor = new CHXEQProcessor( m_pIHXCorePlayer );
	m_pEQProcessor->AddRef();
	m_pEQProcessor->HookAudio();

#if defined(HELIX_FEATURE_REGISTRY) && defined(HELIX_FEATURE_STATS)
	m_pStatisticTracker = CHXStatisticTracker::CreatePlayerStatisticTracker( m_pIHXCorePlayer );
#endif
	return true; // XXXSEH: Could make this return a more relevant value.
}

IHXClientPlayer*
CHXClientPlayer::Create( IHXClientEngine* pIHXClientEngine, IHXPlayer* pIHXPlayer, HXxWindow* pHXxWindow, void* userInfo, const HXClientCallbacks* pClientCallbacks )
{
	CHXClientPlayer* pClientPlayer = new CHXClientPlayer( pIHXClientEngine, pIHXPlayer );
	if ( pClientPlayer )
	{
		if ( pClientPlayer->Init( pHXxWindow, userInfo, pClientCallbacks ) )
		{
			pClientPlayer->AddRef();
			return pClientPlayer;
		}
		delete pClientPlayer;
	}
	return NULL;
}

CHXClientContext*
CHXClientPlayer::CreateClientContext( IHXClientPlayer* pIClientPlayer, IUnknown* pIUnkSiteSupplier, IUnknown* pIUnkErrorSink, void* userInfo, const HXClientCallbacks* pClientCallbacks )
{
	CHXClientContext* pClientContext = new CHXClientContext( pIClientPlayer, pIUnkSiteSupplier, pIUnkErrorSink, userInfo, pClientCallbacks );
	if ( pClientContext )
	{
		pClientContext->AddRef();
	}
	return pClientContext;
}

HX_RESULT
CHXClientPlayer::GetHXClientEngine( IHXClientEngine** ppIClientEngine )
{
	if ( !ppIClientEngine ) return HXR_INVALID_PARAMETER;
	
	*ppIClientEngine = m_pIHXClientEngine;
	if ( *ppIClientEngine )
	{
		( *ppIClientEngine )->AddRef();
		return HXR_OK;
	}
	return HXR_FAIL;
}

HX_RESULT
CHXClientPlayer::GetHXPlayer( IHXPlayer** ppIPlayer )
{
	if ( !ppIPlayer ) return HXR_INVALID_PARAMETER;
	
	*ppIPlayer = m_pIHXCorePlayer;
	if ( *ppIPlayer )
	{
		( *ppIPlayer )->AddRef();
		return HXR_OK;
	}
	return HXR_FAIL;
}

void
CHXClientPlayer::RemoveOpenedDataStream( void )
{
	if ( m_pIOpenedRequest && m_pDataStreams )
	{
		UINT32 numStreams = m_pDataStreams->GetCount();
		for ( UINT32 index = 0; index < numStreams; ++index )
		{
			CHXClientDataStream* pDataStream = NULL;
			m_pDataStreams->GetAt( index, &pDataStream );
			CHXASSERT( pDataStream );
			if ( pDataStream->GetRequest() == m_pIOpenedRequest )
			{
				m_pDataStreams->Remove( index );
				delete pDataStream;
				break;
			}
		}
	}
}

HX_RESULT
CHXClientPlayer::OpenRequest( IHXRequest* pIRequest )
{
	if ( pIRequest == m_pIOpenedRequest ) return HXR_OK;
		
	Stop();
	RemoveOpenedDataStream();
	HX_RELEASE( m_pIOpenedRequest );

	HX_RESULT outResult = LoadRequest( pIRequest );
	if ( SUCCEEDED( outResult ) )
	{
		m_pIOpenedRequest = pIRequest;
		m_pIOpenedRequest->AddRef();
	}
	return outResult;
}

HX_RESULT
CHXClientPlayer::LoadRequest( IHXRequest* pIRequest )
{
	CHXASSERT( pIRequest );
	
	m_pClientContext->ResetHasRequestedUpgradeFlag();
	m_pClientContext->ClearPendingAuthentication();
	
	HX_RESULT outResult = HXR_FAIL;
	SPIHXPlayer2 spPlayer2 = m_pIHXCorePlayer;
	if ( spPlayer2.IsValid() )
	{
		outResult = spPlayer2->OpenRequest( pIRequest );
	}
	else
	{
		const char* pURL = NULL;
		pIRequest->GetURL( pURL );
		outResult = m_pIHXCorePlayer->OpenURL( pURL );
	}
	return outResult;
}

bool
CHXClientPlayer::IsUnsupportedMimeType( const char* pMimeType ) const
{
	if ( pMimeType && *pMimeType )
	{
		int index = 0;
		while ( kUnsupportedMimeTypes[ index ] )
		{
			if ( 0 == strcmp( pMimeType, kUnsupportedMimeTypes[ index ] ) )
			{
				return true;
			}
			++index;
		}
	}
	return false;
}

HX_RESULT
CHXClientPlayer::OpenURL( const char* pURL, const char* pMimeType )
{
	if ( !pURL || !*pURL ) return HXR_INVALID_PARAMETER;
	if ( IsUnsupportedMimeType( pMimeType ) ) return HXR_FAIL;
	
	SPIHXRequest spRequest = new CHXClientRequest( pURL, pMimeType );
	if ( !spRequest.IsValid() ) return HXR_OUTOFMEMORY;
	
	return OpenRequest( spRequest.Ptr() );
}

bool
CHXClientPlayer::IsRequestOpenOrPending( IHXRequest* pIRequest ) const
{
	const char* pURL = NULL;
	pIRequest->GetURL( pURL );
	if ( m_pIOpenedRequest )
	{
		const char* pOpenedURL = NULL;
		m_pIOpenedRequest->GetURL( pOpenedURL );
		if ( 0 == strcasecmp( pURL, pOpenedURL ) ) return true;
	}
	if ( m_pDataStreams )
	{
		UINT32 numStreams = m_pDataStreams->GetCount();
		for ( UINT32 index = 0; index < numStreams; ++index )
		{
			CHXClientDataStream* pDataStream = NULL;
			m_pDataStreams->GetAt( index, &pDataStream );
			CHXASSERT( pDataStream );
			
			const char* pDataURL = NULL;
			pDataStream->GetRequest()->GetURL( pDataURL );
			
			if ( 0 == strcasecmp( pURL, pDataURL ) ) return true;
		}
	}
	return false;
}

bool
CHXClientPlayer::FindDataStream( CHXClientDataStream* pFindDataStream, UINT32* pRecordNum ) const
{
	if ( m_pDataStreams )
	{
		UINT32 numStreams = m_pDataStreams->GetCount();
		for ( UINT32 index = 0; index < numStreams; ++index )
		{
			CHXClientDataStream* pDataStream = NULL;
			m_pDataStreams->GetAt( index, &pDataStream );
			CHXASSERT( pDataStream );
			if ( pDataStream == pFindDataStream )
			{
				if ( pRecordNum )
				{
					*pRecordNum = index;
				}
				return true;
			}
		}
	}
	return false;
}

HX_RESULT
CHXClientPlayer::OpenData( const char* pURL, const char* pMimeType, UINT32 dataLength, bool autoPlay, void** ppOutData )
{
	if ( !pURL || !*pURL ) return HXR_INVALID_PARAMETER;
	if ( !ppOutData ) return HXR_INVALID_PARAMETER;
	if ( ( 0 < dataLength ) && ( dataLength < kMinimumDataSize ) ) return HXR_FAIL;
	if ( IsUnsupportedMimeType( pMimeType ) ) return HXR_FAIL;
	
	CHXClientDataStream* pDataStream = new CHXClientDataStream( this, pURL, pMimeType, dataLength, autoPlay );
	if ( !pDataStream ) return HXR_OUTOFMEMORY;

	// Can't open a data stream twice or in addition to a standard OpenURL.
	HX_RESULT outResult = HXR_FAIL;
	if ( !IsRequestOpenOrPending( pDataStream->GetRequest() ) )
	{
		outResult = HXR_OUTOFMEMORY;
		if ( !m_pDataStreams )
		{
			m_pDataStreams = new CHXFlatArray( sizeof( pDataStream ) );
		}
		if (  m_pDataStreams )
		{
			m_pDataStreams->Push( &pDataStream );
			*ppOutData = pDataStream;
			return HXR_OK;
		}
	}
	delete pDataStream;
	return outResult;