1 /* |
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2 * Copyright (c) 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: Music Player stautus observer |
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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 #ifndef M_AIPLAYERPLUGINENGINEOBSERVER_H |
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20 #define M_AIPLAYERPLUGINENGINEOBSERVER_H |
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21 |
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22 #include <e32std.h> |
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23 |
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24 /** |
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25 * Player state. |
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26 */ |
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27 enum TMPlayerState |
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28 { |
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29 EMPlayerStatePlaying, |
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30 EMPlayerStatePaused, |
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31 EMPlayerStateSeeking, |
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32 EMPlayerStateOther |
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33 }; |
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34 |
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35 /** |
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36 * Observer interface to be implemented by a client of AiPlayerPluginEngine. |
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37 * |
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38 * @lib aiplayerplugin2.lib |
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39 * @since S60 5.0 |
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40 */ |
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41 class MAiPlayerPluginEngineObserver |
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42 { |
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43 public: |
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44 |
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45 /** |
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46 * Called when active player instance's state changes |
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47 * |
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48 * @since S60 5.0 |
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49 * @param aState Active player state |
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50 * @see TMPlayerState |
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51 */ |
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52 virtual void PlayerStateChanged( TMPlayerState aState ) = 0; |
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53 |
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54 /** |
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55 * Called when track info changes (i.e. track changes or current track's |
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56 * info is updated) in the active player instance. |
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57 * |
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58 * @since S60 5.0 |
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59 * @param aTitle Current track's title. |
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60 * @param aArtist Current track's artist. |
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61 */ |
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62 virtual void TrackInfoChanged( const TDesC& aTitle, const TDesC& aArtist ) = 0; |
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63 |
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64 /** |
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65 * Called each second during playback. |
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66 * |
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67 * @since S60 5.0 |
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68 * @param aPosition Current playback position in seconds. |
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69 */ |
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70 virtual void PlaybackPositionChanged( TInt aPosition ) = 0; |
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71 |
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72 /** |
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73 * Called when the player volume is changed. |
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74 * |
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75 * @since S60 5.0 |
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76 * @param aVolume volume level. |
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77 */ |
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78 virtual void VolumeChanged( TInt aVolume ) = 0; |
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79 }; |
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80 |
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81 |
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82 #endif // ?M_AIPLAYERPLUGINENGINEOBSERVER_H |
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