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1 /* |
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2 * Copyright (c) 2010 Ixonos Plc. |
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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 the "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 * Ixonos Plc |
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14 * |
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15 * Description: |
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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 __VEDQUALITYSETTINGSAPI_H__ |
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21 #define __VEDQUALITYSETTINGSAPI_H__ |
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22 |
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23 #include <e32base.h> |
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24 #include "imagingconfigmanager.h" |
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25 |
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26 |
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27 |
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28 const TUint KQSMaxShortStringLength = 16; |
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29 const TUint KQSMaxLongStringLength = 256; |
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30 |
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31 |
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32 |
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33 /* |
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34 * Video quality set structure |
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35 */ |
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36 struct SVideoQualitySet |
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37 { |
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38 public: |
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39 // Video aspect ratio: normal means one of the standard resolutions like QCIF, QVGA, CIF, VGA, if something else, like 16:9 |
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40 TBool iVideoAspectRatioNormal; |
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41 // Video file format mime type, e.g. "video/3gpp" |
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42 TText8 iVideoFileMimeType[KQSMaxShortStringLength]; |
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43 // Video codec mime type, e.g. "video/mp4v-es" |
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44 TText8 iVideoCodecMimeType[KQSMaxLongStringLength]; |
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45 // Video picture width in pixels (luminance) |
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46 TInt iVideoWidth; |
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47 // Video picture height in pixels (luminance) |
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48 TInt iVideoHeight; |
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49 // Video framerate in fps |
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50 TReal iVideoFrameRate; |
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51 // Video bitrate in bps |
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52 TInt iVideoBitRate; |
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53 // Random access point rate, in pictures per second. For example, to request a random access point every ten seconds, set the value to 0.1 |
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54 TReal iRandomAccessRate; |
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55 // Audio codec FourCC, e.g. " AMR" |
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56 TText8 iAudioFourCCType[KQSMaxShortStringLength]; |
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57 // Audio bitrate in bps |
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58 TInt iAudioBitRate; |
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59 // Audio sampling rate in Hz |
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60 TInt iAudioSamplingRate; |
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61 // Number of audio channels; in practice mono(1) vs stereo(2) |
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62 TInt iAudioChannels; |
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63 }; |
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64 |
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65 |
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66 /* |
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67 * API class for getting a quality set for a given level or given resolution |
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68 */ |
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69 class CVideoQualitySelector : public CBase |
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70 { |
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71 public: |
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72 /* |
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73 * Enumeration for nominal video quality levels. Client must use these enumerations to get quality sets. |
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74 * However, if NumberOfQualityLevels() below indicates there are more than ENumberOfNominalLevels, client |
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75 * can use values in-between the nominal values to get set for some other quality level. |
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76 * It is however up to the implementation of the API to map such intermediate values to actual levels |
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77 */ |
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78 enum TVideoQualityLevels |
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79 { |
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80 // client can try asking values in between these but the class may round the values depending on the availability |
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81 EVideoQualityMin = 0, // if there are several MMS compatible settings, EVideoQualityMMS is not the lowest. However level cannot go below this value |
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82 EVideoQualityMMS = 10, // use this when MMS compatible settings are needed |
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83 EVideoQualityNormal = 20, // use this when normal quality settings are needed, i.e. typically higher quality than MMS, but possibly not the highest still |
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84 EVideoQualityHigh = 30, // use this when highest possible quality settings are needed |
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85 EVideoQualityNominalGranularity = 10, |
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86 ENumberOfNominalLevels = 3 |
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87 }; |
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88 |
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89 public: |
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90 /* |
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91 * Create new CVideoQualitySelector object |
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92 */ |
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93 static CVideoQualitySelector* NewL(); |
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94 |
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95 static CVideoQualitySelector* NewLC(); |
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96 |
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97 /* |
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98 * Destructor |
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99 */ |
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100 ~CVideoQualitySelector(); |
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101 |
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102 /* |
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103 * Get number of defined quality levels. This is always at least ENumberOfNominalLevels but can be higher |
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104 */ |
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105 TInt NumberOfQualityLevels(); |
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106 /* |
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107 * Get quality set associated with the given level. The level should be between EVideoQualityHigh and EVideoQualityMin. |
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108 * One the defined nominal levels should be used especially if NumberOfQualityLevels() == ENumberOfNominalLevels. |
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109 * If there is no set associated with given intermediate level, then set from a nearest level is returned. |
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110 */ |
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111 void GetVideoQualitySetL( SVideoQualitySet& aSet, TInt aLevel ); |
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112 /* |
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113 * Get quality set associated with the given level. Otherwise the same as above but if aAspectRatioWide == ETrue, |
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114 * tries to find 16:9 aspect ratio settings, otherwise returns a set from the normal aspect ratio as above. |
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115 */ |
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116 void GetVideoQualitySetL( SVideoQualitySet& aSet, TInt aLevel, TBool aAspectRatioWide ); |
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117 /* |
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118 * Get quality set associated with the given video resolution. Leaves if there is no defined set for the resolution. |
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119 * E.g. if product configuration prefers QVGA over CIF, but client asks for CIF, this function leaves. The CIF settings |
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120 * can then be requested using the MIME-type |
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121 */ |
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122 void GetVideoQualitySetL( SVideoQualitySet& aSet, const TSize& aVideoResolution ); |
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123 /* |
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124 * Get quality set associated with the given video codec MIME-type. Leaves if there is no defined set for the MIME-type. |
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125 */ |
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126 void GetVideoQualitySetL( SVideoQualitySet& aSet, const TPtrC8& aVideoCodecMimeType ); |
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127 |
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128 private: |
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129 /* |
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130 * Default constructor |
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131 */ |
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132 CVideoQualitySelector(); |
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133 |
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134 /* |
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135 * Actual constructor |
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136 */ |
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137 void ConstructL(); |
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138 |
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139 /* |
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140 * Copies the values from the source set to the target set |
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141 */ |
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142 void MapQualitySet( SVideoQualitySet& aTargetSet, TVideoQualitySet& aSourceSet ); |
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143 |
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144 private: // Data |
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145 |
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146 CImagingConfigManager* iConfigManager; |
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147 |
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148 CArrayFixFlat<TUint>* iQualityLevels; |
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149 |
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150 }; |
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151 |
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152 #endif |