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1 /* |
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2 * Copyright (c) 2003 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: smilmediainterface declaration |
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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 #ifndef SMILMEDIAINTERFACE_H |
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21 #define SMILMEDIAINTERFACE_H |
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22 |
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23 // INCLUDES |
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24 #include <e32base.h> |
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25 |
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26 #include <smilregioninterface.h> |
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27 #include <smilpresentation.h> |
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28 |
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29 // FORWARD DECLARATIONS |
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30 class MSmilActive; |
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31 |
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32 // CLASS DECLARATION |
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33 |
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34 /** |
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35 * Abstract base class for media objects |
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36 */ |
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37 class MSmilMedia |
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38 { |
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39 public: |
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40 |
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41 virtual CSmilPresentation* Presentation() const = 0; |
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42 |
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43 /** |
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44 * Returns the region where this media is supposed to be rendered on. May be NULL. |
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45 */ |
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46 virtual MSmilRegion* GetRegion() const = 0; |
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47 |
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48 /** |
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49 * Returns the rectangle (region) where the media is supposed to be rendered on. |
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50 */ |
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51 virtual TRect GetRectangle() const = 0; |
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52 |
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53 /** |
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54 * Invoked by renderer to ask redrawing of area covered by the media. |
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55 * This should be invoked when (visual) media appears, there are changes to it, and |
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56 * when it is removed. |
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57 */ |
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58 virtual void Redraw() = 0; |
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59 |
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60 /** |
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61 * Invoked by a MSmillMediaRenderer object when there is a change |
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62 * in (known) state of its intrinsic values. For example, duration of |
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63 * video clip is not typically known until it is at least partially |
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64 * decoded. This method should be invoked by the renderer when this |
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65 * information becomes available. |
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66 */ |
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67 virtual void RendererDurationChangedL() = 0; |
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68 |
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69 /** |
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70 * Invoked by a MSmillMediaRenderer object when the associated media |
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71 * ends (end of the file or stream is reached). Renderer should also |
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72 * move to frozen state at this point (that is, to keep showing the last |
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73 * frame). |
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74 */ |
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75 virtual void RendererAtEndL() = 0; |
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76 |
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77 /** |
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78 * Media URL |
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79 */ |
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80 virtual TPtrC Src() const = 0; |
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81 |
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82 /** |
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83 * Alt tag |
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84 */ |
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85 virtual TPtrC Alt() const = 0; |
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86 |
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87 /** |
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88 * Type attribute. Should be used to override the media type |
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89 * checking in the media factory, for example |
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90 * <img src="jee.jpg" type="image/gif"/> |
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91 * should cause factory to try opening the image as gif. |
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92 */ |
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93 virtual TPtrC Type() const = 0; |
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94 |
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95 /** |
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96 * Invoke the ActivateL() method of iActive when delay aDelay has passed. |
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97 */ |
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98 virtual void AfterL(MSmilActive* iActive, const TSmilTime& aDelay, TBool aLazy = EFalse) = 0; |
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99 |
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100 /** |
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101 * Cancel a pending request |
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102 */ |
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103 virtual void CancelActive(MSmilActive* aActive) = 0; |
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104 |
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105 /** |
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106 * Get media parameter, or empty TPtrC if not found |
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107 */ |
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108 virtual TPtrC GetParam(const TDesC& aName) const = 0; |
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109 |
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110 /** |
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111 * Returns begin time of media relative to presentation begin time. |
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112 */ |
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113 virtual TSmilTime MediaBegin() const = 0; |
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114 |
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115 /** |
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116 * Returns end time of media relative to presentation begin time. |
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117 */ |
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118 virtual TSmilTime MediaEnd() const = 0; |
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119 }; |
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120 |
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121 #endif // ?INCLUDE_H |
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122 |
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123 // End of File |
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124 |