66
|
1 |
/*
|
|
2 |
* Copyright (c) 2002-2007 Nokia Corporation and/or its subsidiary(-ies).
|
|
3 |
* All rights reserved.
|
|
4 |
* This component and the accompanying materials are made available
|
|
5 |
* under the terms of "Eclipse Public License v1.0"
|
|
6 |
* which accompanies this distribution, and is available
|
|
7 |
* at the URL "http://www.eclipse.org/legal/epl-v10.html".
|
|
8 |
*
|
|
9 |
* Initial Contributors:
|
|
10 |
* Nokia Corporation - initial contribution.
|
|
11 |
*
|
|
12 |
* Contributors:
|
|
13 |
*
|
|
14 |
* Description: This class implements RateControl for HTTP stream audio player.
|
|
15 |
*
|
|
16 |
*/
|
|
17 |
|
|
18 |
|
|
19 |
// INCLUDE FILES
|
|
20 |
#include <jdebug.h>
|
|
21 |
#include <e32base.h>
|
|
22 |
|
|
23 |
#include "cmmaaudiostreamratecontrol.h"
|
|
24 |
|
|
25 |
namespace
|
|
26 |
{
|
|
27 |
const TInt KErrorMessageSize = 32;
|
|
28 |
_LIT(KErrDefaultError, "Symbian OS Error: %d");
|
|
29 |
}
|
|
30 |
|
|
31 |
CMMAAudioStreamRateControl* CMMAAudioStreamRateControl::NewL(CMMAAudioStreamPlayer* aPlayer)
|
|
32 |
{
|
|
33 |
CMMAAudioStreamRateControl* self = new(ELeave) CMMAAudioStreamRateControl(aPlayer);
|
|
34 |
CleanupStack::PushL(self);
|
|
35 |
self->ConstructL();
|
|
36 |
CleanupStack::Pop(self);
|
|
37 |
return self;
|
|
38 |
}
|
|
39 |
|
|
40 |
CMMAAudioStreamRateControl::~CMMAAudioStreamRateControl()
|
|
41 |
{
|
|
42 |
DEBUG("MMA:CMMAAudioStreamRateControl::~CMMAAudioStreamRateControl");
|
|
43 |
if (iPlayer)
|
|
44 |
{
|
|
45 |
iPlayer->RemoveStateListener(this);
|
|
46 |
}
|
|
47 |
}
|
|
48 |
|
|
49 |
CMMAAudioStreamRateControl::CMMAAudioStreamRateControl(CMMAAudioStreamPlayer* aPlayer) :
|
|
50 |
iPlayer(aPlayer), iCurrentRate(KMMADefaultRate)
|
|
51 |
{
|
|
52 |
DEBUG("MMA:CMMAAudioStreamRateControl::CMMAAudioStreamRateControl");
|
|
53 |
}
|
|
54 |
|
|
55 |
void CMMAAudioStreamRateControl::ConstructL()
|
|
56 |
{
|
|
57 |
iPlayer->AddStateListenerL(this);
|
|
58 |
}
|
|
59 |
|
|
60 |
void CMMAAudioStreamRateControl::StateChanged(TInt aState)
|
|
61 |
{
|
|
62 |
DEBUG("MMA:CMMAAudioStreamRateControl::StateChanged");
|
|
63 |
if (aState == CMMAPlayer::EStarted && iCurrentRate == KMMAMinRate)
|
|
64 |
{
|
|
65 |
// do not post event to Java or change player state
|
|
66 |
TInt err = iPlayer->Pause();
|
|
67 |
if (err != KErrNone)
|
|
68 |
{
|
|
69 |
DEBUG_INT("CMMAAudioStreamRateControl::StateChanged: Pause error %d", err);
|
|
70 |
TBuf<KErrorMessageSize> errorMessage;
|
|
71 |
errorMessage.Format(KErrDefaultError, err);
|
|
72 |
iPlayer->PostStringEvent(CMMAPlayerEvent::EError, errorMessage);
|
|
73 |
}
|
|
74 |
}
|
|
75 |
}
|
|
76 |
|
|
77 |
TInt CMMAAudioStreamRateControl::SetRateL(TInt aRate)
|
|
78 |
{
|
|
79 |
DEBUG("MMA:CMMAAudioStreamRateControl::SetRateL");
|
|
80 |
TInt newRate;
|
|
81 |
if (aRate <= KMMAMinRate)
|
|
82 |
{
|
|
83 |
newRate = KMMAMinRate;
|
|
84 |
}
|
|
85 |
else
|
|
86 |
{
|
|
87 |
newRate = KMMADefaultRate;
|
|
88 |
}
|
|
89 |
|
|
90 |
if ((iPlayer->State() == CMMAPlayer::EStarted) &&
|
|
91 |
(newRate != iCurrentRate))
|
|
92 |
{
|
|
93 |
if (newRate == KMMAMinRate)
|
|
94 |
{
|
|
95 |
// do not post event to Java or change player state
|
|
96 |
User::LeaveIfError(iPlayer->Pause());
|
|
97 |
}
|
|
98 |
else
|
|
99 |
{
|
|
100 |
// do not post event to Java or change player state
|
|
101 |
iPlayer->StartL(ETrue);
|
|
102 |
}
|
|
103 |
}
|
|
104 |
iCurrentRate = newRate;
|
|
105 |
return iCurrentRate;
|
|
106 |
}
|
|
107 |
|
|
108 |
TInt CMMAAudioStreamRateControl::RateL()
|
|
109 |
{
|
|
110 |
return iCurrentRate;
|
|
111 |
}
|
|
112 |
|
|
113 |
|
|
114 |
// END OF FILE
|