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1 /* |
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2 * Copyright (c) 2005-2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Manipulates the priority of a Player. |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 // INCLUDE FILES |
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21 #include <audiopreference.h> |
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22 #include <jdebug.h> |
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23 #include <CMMAMidiPlayer.h> |
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24 #include "CAMMSPriorityControl.h" |
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25 #include <CMMAPlayerEvent.h> |
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26 #include <CMMAAudioPlayer.h> |
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27 #include <MMFController.h> |
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28 #include <MidiClientUtility.h> |
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29 |
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30 |
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31 |
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32 const TInt KErrorMessageSize = 32; |
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33 _LIT(KErrPriorityError, "AMMS PC error: %d"); |
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34 |
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35 // Default AMMS priority. |
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36 const TInt KAMMSDefaultPriority = 50; |
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37 |
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38 // Reasonable MMF priorities. |
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39 const TInt KAMMSMinMMFPriority = 71; |
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40 const TInt KAMMSMaxMMFPriority = 89; |
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41 |
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42 #ifdef _DEBUG |
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43 // CONSTANTS |
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44 const TInt KAMMSMaxPriority = 100; |
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45 const TInt KAMMSMinPriority = 0; |
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46 #endif // _DEBUG |
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47 |
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48 |
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49 // ============================ MEMBER FUNCTIONS =============================== |
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50 |
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51 // ----------------------------------------------------------------------------- |
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52 // CAMMSPriorityControl::NewLC |
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53 // Two-phased constructor. |
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54 // ----------------------------------------------------------------------------- |
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55 CAMMSPriorityControl* CAMMSPriorityControl::NewLC(CMMAPlayer* aPlayer) |
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56 { |
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57 CAMMSPriorityControl* self = new(ELeave) CAMMSPriorityControl(aPlayer); |
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58 |
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59 CleanupStack::PushL(self); |
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60 |
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61 self->ConstructL(); |
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62 |
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63 return self; |
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64 } |
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65 |
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66 // Destructor |
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67 CAMMSPriorityControl::~CAMMSPriorityControl() |
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68 { |
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69 DEBUG("AMMS::CAMMSPriorityControl::~"); |
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70 } |
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71 |
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72 // ----------------------------------------------------------------------------- |
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73 // CAMMSPriorityControl::SetPriorityL |
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74 // Sets the priority using a linear point scale between 0 and 100. |
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75 // ----------------------------------------------------------------------------- |
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76 // |
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77 void CAMMSPriorityControl::SetPriorityL(TInt aPriority) |
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78 { |
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79 DEBUG_INT("AMMS::CAMMSPriorityControl::SetPriorityL %d", aPriority); |
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80 |
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81 // Check in debug build that aPriority is within valid range. |
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82 __ASSERT_DEBUG( |
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83 (aPriority <= KAMMSMaxPriority) && |
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84 (aPriority >= KAMMSMinPriority), |
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85 User::Invariant()); |
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86 |
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87 // Set a new priority only if it differs from the previous one. |
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88 if (aPriority != iVisiblePriority) |
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89 { |
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90 // Set the new priority to MMF only if the player is PREFETCHED |
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91 // (otherwise setting will leave). In other states, the new priority |
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92 // will be set when the player state changes to PREFETCHED. |
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93 if (iPlayer->State() == CMMAPlayer::EPrefetched) |
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94 { |
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95 SetPriorityToMmfL(aPriority); |
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96 } |
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97 |
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98 iVisiblePriority = aPriority; |
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99 } |
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100 |
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101 DEBUG("AMMS::CAMMSPriorityControl::SetPriorityL -"); |
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102 } |
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103 |
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104 // ----------------------------------------------------------------------------- |
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105 // CAMMSPriorityControl::Priority |
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106 // Gets the priority. |
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107 // ----------------------------------------------------------------------------- |
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108 TInt CAMMSPriorityControl::Priority() |
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109 { |
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110 return iVisiblePriority; |
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111 } |
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112 |
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113 // ----------------------------------------------------------------------------- |
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114 // CAMMSPriorityControl::StateChanged |
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115 // Called when player state is changed. |
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116 // ----------------------------------------------------------------------------- |
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117 void CAMMSPriorityControl::StateChanged(TInt aState) |
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118 { |
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119 DEBUG_INT("AMMS::CAMMSPriorityControl::StateChanged +, state = %d", |
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120 aState); |
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121 |
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122 // If the state was changed to PREFETCHED, set the buffered priority to |
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123 // MMF. Set a new priority only if it differs from the previous one. |
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124 |
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125 if ((aState == CMMAPlayer::EPrefetched) && |
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126 (iActualPriority != iVisiblePriority)) |
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127 { |
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128 TRAPD(err, SetPriorityToMmfL(iVisiblePriority)); |
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129 |
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130 DEBUG_INT("AMMS::CAMMSPriorityControl::StateChanged, err = %d", err); |
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131 |
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132 if (err != KErrNone) |
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133 { |
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134 TBuf<KErrorMessageSize> errorMessage; |
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135 errorMessage.Format(KErrPriorityError, err); |
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136 iPlayer->PostStringEvent(CMMAPlayerEvent::EError, errorMessage); |
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137 } |
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138 } |
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139 |
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140 DEBUG("AMMS::CAMMSPriorityControl::StateChanged -"); |
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141 } |
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142 |
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143 const TDesC& CAMMSPriorityControl::ClassName() const |
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144 { |
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145 DEBUG("CAMMSPriorityControl::ClassName"); |
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146 |
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147 return KAMMSPriorityControl; |
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148 } |
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149 |
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150 // ----------------------------------------------------------------------------- |
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151 // CAMMSPriorityControl::SetPriorityToMmfL |
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152 // Scales the given AMMS priority to MMF priority and sets it to MMF. |
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153 // ----------------------------------------------------------------------------- |
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154 void CAMMSPriorityControl::SetPriorityToMmfL(TInt aAmmsPriority) |
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155 { |
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156 DEBUG_INT("AMMS::CAMMSPriorityControl::SetPriorityToMmfL %d", |
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157 aAmmsPriority); |
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158 |
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159 // Scale the AMMS priority value to MMF priority value before setting it. |
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160 // The default priority used by MMA is 80. MMF priority can be between |
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161 // -100 and 100, but values between 71 and 89 are reasonable ones. |
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162 TInt newPriority = KAMMSMinMMFPriority + aAmmsPriority * |
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163 (KAMMSMaxMMFPriority - KAMMSMinMMFPriority) / 100; // CSI: 47 100% for scaled value # |
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164 |
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165 DEBUG_INT("AMMS::CAMMSPriorityControl::SetPriorityToMmfL, newPriority = %d", |
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166 newPriority); |
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167 |
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168 // In case of MIDIPlayer, use CMidiClientUtility, otherwise RMMFController. |
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169 if (iPlayer->Type() == KMMAMIDIPlayer) |
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170 { |
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171 // In case of CMMAMIDIPlayer use CMidiClientUtility |
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172 CMMAMIDIPlayer* mmaMIDIPlayer = |
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173 reinterpret_cast< CMMAMIDIPlayer* >(iPlayer); |
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174 |
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175 CMidiClientUtility* midiClientUtility = mmaMIDIPlayer->MidiClient(); |
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176 |
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177 midiClientUtility->SetPriorityL(newPriority, |
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178 KMMAMIDIPriorityPreference); |
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179 } |
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180 else |
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181 { |
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182 CMMAAudioPlayer* mmaAudioPlayer = |
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183 reinterpret_cast< CMMAAudioPlayer* >(iPlayer); |
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184 |
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185 RMMFController& rmmfController = mmaAudioPlayer->Controller(); |
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186 |
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187 TMMFPrioritySettings prioritySettings; |
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188 prioritySettings.iPriority = newPriority; |
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189 |
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190 User::LeaveIfError( |
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191 rmmfController.SetPrioritySettings(prioritySettings)); |
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192 } |
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193 |
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194 iActualPriority = aAmmsPriority; |
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195 |
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196 DEBUG("AMMS::CAMMSPriorityControl::SetPriorityToMmfL -"); |
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197 } |
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198 |
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199 // ----------------------------------------------------------------------------- |
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200 // CAMMSPriorityControl::CAMMSPriorityControl |
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201 // C++ default constructor can NOT contain any code, that |
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202 // might leave. |
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203 // ----------------------------------------------------------------------------- |
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204 CAMMSPriorityControl::CAMMSPriorityControl(CMMAPlayer* aPlayer) |
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205 : CAMMSControl(aPlayer), |
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206 iVisiblePriority(KAMMSDefaultPriority), |
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207 iActualPriority(KAMMSDefaultPriority) |
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208 { |
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209 } |
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210 |
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211 // ----------------------------------------------------------------------------- |
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212 // CAMMSPlayerStateListener::ConstructL |
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213 // 2nd phase constructor. |
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214 // (other items were commented in a header). |
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215 // ----------------------------------------------------------------------------- |
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216 void CAMMSPriorityControl::ConstructL() |
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217 { |
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218 DEBUG("AMMS::CAMMSPriorityControl::ConstructL +"); |
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219 |
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220 iPlayer->AddStateListenerL(this); |
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221 |
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222 DEBUG("AMMS::CAMMSPriorityControl::ConstructL -"); |
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223 } |
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224 |
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225 |
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226 // End of File |