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 * Implementation for size estimate. |
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17 * |
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18 */ |
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19 |
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20 |
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21 // Include Files |
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22 |
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23 #include "SizeEstimate.h" |
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24 #include "movieprocessorimpl.h" |
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25 #include "AudSong.h" |
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26 #include "VedMovieImp.h" |
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27 #include "VedVideoClipInfoImp.h" |
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28 #include "VedVideoClipGenerator.h" |
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29 #include "vedaudiosettings.h" |
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30 |
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31 |
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32 |
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33 // An assertion macro wrapper to clean up the code a bit |
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34 #define VPASSERT(x) __ASSERT_DEBUG(x, User::Panic(_L("CSizeEstimate"), CMovieProcessorImpl::EInvalidInternalState)) |
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35 |
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36 #ifdef _DEBUG |
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37 #include <e32svr.h> |
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38 #define PRINT(x) RDebug::Print x; |
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39 #else |
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40 #define PRINT(x) |
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41 #endif |
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42 |
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43 |
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44 // ================= MEMBER FUNCTIONS ======================= |
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45 |
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46 // ----------------------------------------------------------------------------- |
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47 // CSizeEstimate::NewL |
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48 // Two-phased constructor. |
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49 // ----------------------------------------------------------------------------- |
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50 // |
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51 CSizeEstimate* CSizeEstimate::NewL(CMovieProcessorImpl* aProcessor) |
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52 { |
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53 CSizeEstimate* self = NewLC(aProcessor); |
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54 CleanupStack::Pop(self); |
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55 return self; |
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56 } |
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57 |
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58 CSizeEstimate* CSizeEstimate::NewLC(CMovieProcessorImpl* aProcessor) |
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59 { |
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60 CSizeEstimate* self = new (ELeave) CSizeEstimate(aProcessor); |
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61 CleanupStack::PushL(self); |
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62 self->ConstructL(); |
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63 return self; |
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64 } |
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65 |
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66 // ----------------------------------------------------------------------------- |
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67 // CSizeEstimate::CSizeEstimate |
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68 // C++ default constructor can NOT contain any code, that |
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69 // might leave. |
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70 // ----------------------------------------------------------------------------- |
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71 // |
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72 CSizeEstimate::CSizeEstimate(CMovieProcessorImpl* aProcessor) |
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73 { |
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74 iProcessor = aProcessor; |
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75 } |
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76 |
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77 // ----------------------------------------------------------------------------- |
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78 // CSizeEstimate::~CSizeEstimate |
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79 // Destructor. |
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80 // ----------------------------------------------------------------------------- |
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81 // |
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82 CSizeEstimate::~CSizeEstimate() |
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83 { |
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84 } |
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85 |
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86 // ----------------------------------------------------------------------------- |
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87 // CSizeEstimate::ConstructL |
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88 // Symbian 2nd phase constructor can leave. |
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89 // ----------------------------------------------------------------------------- |
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90 // |
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91 void CSizeEstimate::ConstructL() |
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92 { |
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93 } |
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94 |
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95 // ----------------------------------------------------------------------------- |
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96 // CSizeEstimate::GetMovieSizeEstimateL |
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97 // Calculates file size estimate |
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98 // (other items were commented in a header). |
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99 // ----------------------------------------------------------------------------- |
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100 // |
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101 TInt CSizeEstimate::GetMovieSizeEstimateL(const CVedMovie* aMovie, TInt& aFileSize) |
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102 { |
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103 TInt i = 0; |
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104 TInt j = 0; |
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105 |
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106 TInt videoDataSize = 0; |
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107 TInt audioDataSize = 0; |
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108 TInt video3gpSize = 0; |
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109 TInt audio3gpSize = 0; |
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110 TInt numberOfVideoFrames = 0; |
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111 |
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112 const CVedMovieImp* movie = reinterpret_cast<const CVedMovieImp *>(aMovie); |
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113 |
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114 TInt movieBitrate = movie->VideoStandardBitrate(); |
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115 if (movieBitrate < KSELowBitrateLimit) |
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116 { |
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117 // Adjust low bit rates to slightly higher |
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118 movieBitrate += KSELowBitrateIncrement; |
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119 } |
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120 |
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121 TInt numberOfVideoClips = movie->VideoClipCount(); |
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122 |
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123 // Calculate video data size from all clips |
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124 for (i = 0; i < numberOfVideoClips; i++) |
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125 { |
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126 CVedVideoClip* vedClip = movie->VideoClip(i); |
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127 TInt videoClipSize = 0; |
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128 |
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129 // Get the number of video frames in the clip |
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130 TInt videoFramesInClip = 0; |
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131 if (vedClip->Info()->Class() == EVedVideoClipClassGenerated) |
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132 { |
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133 videoFramesInClip = vedClip->Info()->Generator()->VideoFrameCount(); |
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134 } |
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135 else |
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136 { |
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137 videoFramesInClip = vedClip->Info()->VideoFrameCount(); |
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138 } |
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139 |
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140 if (videoFramesInClip <= 0) |
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141 { |
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142 // No video frames in clip, check next one |
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143 continue; |
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144 } |
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145 |
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146 if (vedClip->Info()->Class() == EVedVideoClipClassGenerated) |
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147 { |
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148 TInt startTransitionFrames = 0; |
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149 TInt endTransitionFrames = 0; |
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150 |
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151 // Get the number of transition frames in the clip |
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152 GetTransitionFrames(movie, i, startTransitionFrames, endTransitionFrames); |
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153 |
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154 // Calculate the size of the transition frames and add to video clip size |
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155 TInt transitionLength = (TInt) (1000000.0 / (TReal) movie->MaximumFramerate()) * (startTransitionFrames + endTransitionFrames); |
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156 videoClipSize += (transitionLength * movieBitrate) / 8 / 1000000; |
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157 |
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158 // Calculate the size of the non-transition frames and add to video clip size |
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159 TInt nonTransitionFrames = videoFramesInClip - startTransitionFrames - endTransitionFrames; |
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160 |
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161 if (nonTransitionFrames > 0) |
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162 { |
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163 // The first one is intra and the rest are inter frames |
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164 videoClipSize += GetGeneratedFrameSize(movie, ETrue); |
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165 videoClipSize += GetGeneratedFrameSize(movie, EFalse) * (nonTransitionFrames - 1); |
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166 } |
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167 |
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168 // Add clip size to video data size |
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169 videoDataSize += videoClipSize; |
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170 numberOfVideoFrames += videoFramesInClip; |
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171 |
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172 // All done for this clip, go to next one |
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173 continue; |
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174 } |
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175 |
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176 // Calculate the frame rate of the source clip |
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177 TReal videoClipFramerate = 1.0; |
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178 if (vedClip->Info()->Duration().Int64() != 0) |
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179 { |
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180 videoClipFramerate = (TReal) videoFramesInClip * 1000000.0 / |
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181 I64REAL(vedClip->Info()->Duration().Int64()); |
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182 } |
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183 |
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184 if (vedClip->Info()->Resolution() == movie->Resolution() && |
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185 vedClip->Info()->VideoType() == movie->VideoType() && |
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186 videoClipFramerate < (TReal) movie->MaximumFramerate() + 0.2) |
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187 { |
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188 // Clip is not transcoded => calculate the clip size using the frame sizes of the original clip |
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189 TInt64 frameTime = 0; |
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190 TInt64 videoClipCutInTime = vedClip->CutInTime().Int64(); |
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191 TInt64 videoClipCutOutTime = vedClip->CutOutTime().Int64(); |
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192 |
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193 for (j = 0; j < videoFramesInClip; j++) |
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194 { |
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195 frameTime = vedClip->Info()->VideoFrameStartTimeL(j).Int64(); |
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196 |
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197 if (frameTime < videoClipCutInTime) |
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198 { |
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199 continue; // Frame is before cut in position => check next one |
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200 } |
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201 else if (frameTime >= videoClipCutOutTime) |
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202 { |
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203 break; // Cut out position reached => no need to check frames anymore |
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204 } |
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205 |
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206 // Add frame size to video clip size |
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207 videoClipSize += vedClip->Info()->VideoFrameSizeL(j); |
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208 numberOfVideoFrames++; |
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209 } |
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210 |
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211 // Check if color effect is in use |
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212 if (vedClip->ColorEffect() != EVedColorEffectNone) |
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213 { |
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214 // Color tone effects decreases the size of the frames slightly |
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215 videoClipSize -= (TInt) ((TReal) videoClipSize * KSEBWReductionFactor); |
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216 } |
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217 } |
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218 else // Clip is transcoded |
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219 { |
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220 TInt estimatedBitrate = movieBitrate; |
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221 |
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222 // If we are transcoding a low quality clip to high quality (e.g. QCIF to VGA) |
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223 if (movieBitrate >= KSEHighBitrateLimit && |
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224 movie->Resolution().iWidth > vedClip->Info()->Resolution().iWidth * 3 && |
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225 videoClipFramerate < (TReal) movie->MaximumFramerate() * 0.5 + 0.2) |
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226 { |
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227 // Halve the estimated bit rate if the source frame rate is |
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228 // roughly less than half of the maximum frame rate |
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229 estimatedBitrate = estimatedBitrate >> 1; |
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230 } |
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231 |
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232 // Clip frame rate can be decreased if necessary but not increased |
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233 TReal estimatedFramerate = Min(videoClipFramerate, (TReal) movie->MaximumFramerate()); |
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234 |
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235 // Calculate the clip length |
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236 TInt64 videoClipLength = vedClip->CutOutTime().Int64() - vedClip->CutInTime().Int64(); |
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237 |
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238 // Calculate clip size |
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239 videoClipSize = I64INT((videoClipLength * (TInt64) estimatedBitrate) / 8 / 1000000); |
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240 |
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241 // Calculate the number of frames included between cut in and cut out |
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242 numberOfVideoFrames += (TInt) (I64REAL(videoClipLength * estimatedFramerate) / 1000000.0); |
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243 } |
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244 |
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245 // Add clip size to video data size |
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246 videoDataSize += videoClipSize; |
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247 } |
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248 |
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249 // Calculate video 3gp size |
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250 video3gpSize = GetVideo3gpSizePerFrame(numberOfVideoFrames) * numberOfVideoFrames; |
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251 |
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252 // Check if there's any audio |
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253 if (movie->AudioType() != EVedAudioTypeNoAudio) |
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254 { |
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255 // Calculate audio data size |
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256 CAudSong* song = ((CVedMovieImp*)aMovie)->Song(); |
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257 audioDataSize = song->GetFrameSizeEstimateL(TTimeIntervalMicroSeconds(0), movie->Duration()); |
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258 |
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259 if (audioDataSize > 0) |
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260 { |
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261 // Calculate audio 3gp size |
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262 TReal numberOfAudioFrames = I64REAL(aMovie->Duration().Int64() / song->GetFrameDurationMicro()); |
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263 TReal numberOfAudioSamples = numberOfAudioFrames / (TReal) iProcessor->GetAudioFramesInSample(); |
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264 |
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265 audio3gpSize = (TInt) (GetAudio3gpSizePerSample(numberOfAudioSamples) * numberOfAudioSamples); |
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266 } |
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267 } |
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268 |
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269 // Calculate final estimated file size |
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270 aFileSize = videoDataSize + audioDataSize + video3gpSize + audio3gpSize + KSEFixedSize; |
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271 return KErrNone; |
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272 } |
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273 |
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274 |
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275 // ----------------------------------------------------------------------------- |
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276 // CSizeEstimate::GetMovieSizeEstimateForMMSL |
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277 // Calculates file size estimate for MMS use |
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278 // (other items were commented in a header). |
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279 // ----------------------------------------------------------------------------- |
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280 // |
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281 TInt CSizeEstimate::GetMovieSizeEstimateForMMSL(const CVedMovie* aMovie, TInt aTargetSize, |
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282 TTimeIntervalMicroSeconds aStartTime, |
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283 TTimeIntervalMicroSeconds& aEndTime) |
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284 { |
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285 TInt i = 0; |
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286 TInt j = 0; |
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287 |
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288 TInt videoDataSize = 0; |
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289 TInt audioDataSize = 0; |
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290 TInt video3gpSize = 0; |
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291 TInt audio3gpSize = 0; |
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292 TInt numberOfVideoFrames = 0; |
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293 TReal numberOfAudioSamples = 0.0; |
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294 TInt64 currentTime = aStartTime.Int64(); |
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295 |
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296 CVedVideoClip* vedClip = 0; |
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297 CAudSong* song = ((CVedMovieImp*)aMovie)->Song(); |
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298 const CVedMovieImp* movie = reinterpret_cast<const CVedMovieImp *>(aMovie); |
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299 |
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300 TReal audioDurationToSamplesFactor = 1.0 / (I64REAL(song->GetFrameDurationMicro()) * (TReal) iProcessor->GetAudioFramesInSample()); |
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301 |
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302 TInt movieBitrate = movie->VideoStandardBitrate(); |
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303 if (movieBitrate < KSELowBitrateLimit) |
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304 { |
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305 // Adjust low bit rates to slightly higher |
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306 movieBitrate += KSELowBitrateIncrement; |
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307 } |
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308 |
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309 TInt numberOfVideoClips = movie->VideoClipCount(); |
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310 |
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311 // Find first clip included in the output |
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312 TInt startClipNumber = 0; |
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313 for (i = 1; i < numberOfVideoClips; i++, startClipNumber++) |
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314 { |
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315 vedClip = movie->VideoClip(i); |
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316 |
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317 if (aStartTime < vedClip->StartTime()) |
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318 { |
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319 break; |
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320 } |
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321 } |
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322 |
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323 // Go through all the clips |
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324 for (i = startClipNumber; i < numberOfVideoClips; i++) |
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325 { |
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326 vedClip = movie->VideoClip(i); |
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327 |
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328 // Get the number of video frames in the clip |
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329 TInt videoFramesInClip = 0; |
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330 if (vedClip->Info()->Class() == EVedVideoClipClassGenerated) |
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331 { |
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332 videoFramesInClip = vedClip->Info()->Generator()->VideoFrameCount(); |
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333 } |
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334 else |
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335 { |
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336 videoFramesInClip = vedClip->Info()->VideoFrameCount(); |
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337 } |
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338 |
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339 if (videoFramesInClip <= 0) |
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340 { |
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341 // No video frames in clip, check next clip |
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342 continue; |
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343 } |
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344 |
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345 // Calculate the frame rate of the source clip |
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346 TReal videoClipFramerate = 1.0; |
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347 if (vedClip->Info()->Duration().Int64() != 0) |
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348 { |
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349 videoClipFramerate = (TReal) videoFramesInClip * 1000000.0 / |
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350 I64REAL(vedClip->Info()->Duration().Int64()); |
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351 } |
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352 |
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353 TInt videoFrameSize = 0; |
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354 TInt64 frameTime = 0; |
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355 TInt64 frameDuration = 0; |
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356 TInt64 videoClipCutInTime = vedClip->CutInTime().Int64(); |
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357 TInt64 videoClipCutOutTime = vedClip->CutOutTime().Int64(); |
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358 currentTime = vedClip->StartTime().Int64(); |
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359 |
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360 TInt startTransitionFrames = 0; |
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361 TInt endTransitionFrames = 0; |
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362 |
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363 // Check if clip needs to be transcoded |
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364 TBool clipIsTranscoded = EFalse; |
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365 if (vedClip->Info()->Class() == EVedVideoClipClassFile) |
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366 { |
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367 if (!(vedClip->Info()->Resolution() == movie->Resolution() && |
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368 vedClip->Info()->VideoType() == movie->VideoType() && |
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369 videoClipFramerate < (TReal) movie->MaximumFramerate() + 0.2)) |
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370 { |
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371 clipIsTranscoded = ETrue; |
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372 } |
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373 } |
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374 else |
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375 { |
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376 // Get the number of transition frames in the clip |
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377 GetTransitionFrames(movie, i, startTransitionFrames, endTransitionFrames); |
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378 } |
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379 |
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380 TInt estimatedBitrate = movieBitrate; |
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381 |
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382 // If we are transcoding a low quality clip to high quality (e.g. QCIF to VGA) |
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383 if (movieBitrate >= KSEHighBitrateLimit && |
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384 movie->Resolution().iWidth > vedClip->Info()->Resolution().iWidth * 3 && |
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385 videoClipFramerate < (TReal) movie->MaximumFramerate() * 0.5 + 0.2) |
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386 { |
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387 // Halve the estimated bit rate if the source frame rate is |
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388 // roughly less than half of the maximum frame rate |
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389 estimatedBitrate = estimatedBitrate >> 1; |
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390 } |
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391 |
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392 if (i == startClipNumber) |
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393 { |
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394 // We need to adjust the cut in time for the first clip since the client |
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395 // requested to get the size estimate starting from this position |
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396 videoClipCutInTime = aStartTime.Int64() - vedClip->StartTime().Int64(); |
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397 |
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398 // Initialize the current time to this position |
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399 currentTime = aStartTime.Int64(); |
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400 } |
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401 |
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402 // Estimate the size on every frame |
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403 for (j = 0; j < videoFramesInClip; j++) |
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404 { |
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405 // Get frame start time and duration |
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406 if (vedClip->Info()->Class() == EVedVideoClipClassFile) |
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407 { |
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408 frameTime = vedClip->Info()->VideoFrameStartTimeL(j).Int64(); |
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409 frameDuration = vedClip->Info()->VideoFrameDurationL(j).Int64(); |
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410 } |
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411 else |
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412 { |
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413 frameTime = vedClip->Info()->Generator()->VideoFrameStartTime(j).Int64(); |
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414 frameDuration = vedClip->Info()->Generator()->VideoFrameDuration(j).Int64(); |
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415 } |
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416 |
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417 if (frameTime < videoClipCutInTime) |
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418 { |
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419 continue; // Frame is before cut in position => check next one |
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420 } |
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421 else if (frameTime >= videoClipCutOutTime) |
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422 { |
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423 break; // Cut out position reached => no need to check frames anymore |
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424 } |
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425 |
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426 // Check that duration is valid |
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427 if ((frameDuration <= 0) || (frameDuration > KSEMaxFrameDuration)) |
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428 { |
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429 // Calculate frame duration from the frame rate |
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430 frameDuration = (TInt64) (1000000.0 / videoClipFramerate); |
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431 } |
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432 |
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433 // Check for slow motion |
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434 if (vedClip->Speed() != KVedNormalSpeed) |
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435 { |
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436 frameDuration = (frameDuration * KVedNormalSpeed) / vedClip->Speed(); |
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437 } |
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438 |
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439 if (clipIsTranscoded) |
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440 { |
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441 // Clip is transcoded so calculate frame size from estimated bit rate |
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442 videoFrameSize = I64INT((frameDuration * estimatedBitrate) / 8 / 1000000); |
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443 } |
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444 else |
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445 { |
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446 if (vedClip->Info()->Class() == EVedVideoClipClassGenerated) |
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447 { |
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448 // Check if the frame is a transition frame |
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449 if (j < (startTransitionFrames - 1) || |
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450 j > (videoFramesInClip - endTransitionFrames)) |
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451 { |
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452 // Frame is encoded so calculate frame size from movie bit rate |
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453 videoFrameSize = I64INT((frameDuration * movieBitrate) / 8 / 1000000); |
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454 } |
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455 else |
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456 { |
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457 // Frame is intra if it's the first one in the clip |
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458 // or if it's right after or before transition |
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459 TBool isIntra = j == 0 || j == (startTransitionFrames - 1) || j == (videoFramesInClip - endTransitionFrames); |
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460 videoFrameSize = GetGeneratedFrameSize(movie, isIntra); |
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461 } |
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462 } |
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463 else |
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464 { |
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465 // Get frame size from the original clip |
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466 videoFrameSize = vedClip->Info()->VideoFrameSizeL(j); |
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467 |
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468 // Check if color effect is in use |
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469 if (vedClip->ColorEffect() != EVedColorEffectNone) |
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470 { |
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471 // Color tone effects decreases the size of the frame slightly |
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472 videoFrameSize -= (TInt) ((TReal) videoFrameSize * KSEBWReductionFactor); |
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473 } |
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474 } |
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475 } |
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476 |
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477 // Calculate video data size |
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478 videoDataSize += videoFrameSize; |
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479 |
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480 // Calculate video 3gp size |
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481 numberOfVideoFrames++; |
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482 video3gpSize = GetVideo3gpSizePerFrame(numberOfVideoFrames) * numberOfVideoFrames; |
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483 |
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484 if (movie->AudioType() != EVedAudioTypeNoAudio) |
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485 { |
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486 // Calculate audio data size |
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487 audioDataSize += song->GetFrameSizeEstimateL(currentTime, currentTime + frameDuration); |
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488 |
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489 if (audioDataSize > 0) |
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490 { |
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491 // Calculate audio 3gp size |
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492 numberOfAudioSamples += I64REAL(frameDuration) * audioDurationToSamplesFactor; |
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493 audio3gpSize = (TInt) (GetAudio3gpSizePerSample(numberOfAudioSamples) * numberOfAudioSamples); |
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494 } |
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495 } |
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496 |
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497 // Check if target size is reached |
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498 if (videoDataSize + audioDataSize + video3gpSize + audio3gpSize + KSEFixedSize >= aTargetSize) |
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499 { |
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500 aEndTime = currentTime; |
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501 |
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502 // Make sure we didn't overflow the end time |
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503 if (aEndTime > movie->Duration()) |
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504 { |
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505 aEndTime = movie->Duration(); |
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506 } |
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507 |
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508 return KErrNone; |
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509 } |
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510 |
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511 // Increase time to the next frame |
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512 currentTime += frameDuration; |
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513 } |
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514 } |
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515 |
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516 // Check if audio is longer than video |
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517 TInt64 remainingAudioDuration = 0; |
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518 |
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519 if (numberOfVideoClips > 0) |
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520 { |
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521 remainingAudioDuration = movie->Duration().Int64() - |
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522 movie->VideoClip(numberOfVideoClips - 1)->EndTime().Int64(); |
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523 |
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524 // Adjust current time to the end of the last clip |
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525 currentTime = movie->VideoClip(numberOfVideoClips - 1)->EndTime().Int64(); |
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526 } |
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527 else |
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528 { |
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529 remainingAudioDuration = aMovie->Duration().Int64(); |
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530 } |
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531 |
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532 if (remainingAudioDuration > 0) |
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533 { |
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534 // Estimate how many black frames are inserted |
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535 TInt frameDuration = KSEBlackFrameDuration; |
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536 TInt blackVideoFrames = (TInt) (remainingAudioDuration / frameDuration) + 1; |
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537 |
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538 for (j = 0; j < blackVideoFrames; j++) |
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539 { |
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540 // Calculate video data size |
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541 TBool isIntra = j == 0; |
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542 videoDataSize += GetBlackFrameSize(movie, isIntra); |
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543 |
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544 // Calculate video 3gp size |
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545 numberOfVideoFrames++; |
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546 video3gpSize = GetVideo3gpSizePerFrame(numberOfVideoFrames) * numberOfVideoFrames; |
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547 |
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548 // Calculate audio data size |
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549 audioDataSize += song->GetFrameSizeEstimateL(currentTime, currentTime + frameDuration); |
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550 |
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551 // Calculate audio 3gp size |
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552 numberOfAudioSamples += (TReal) frameDuration * audioDurationToSamplesFactor; |
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553 audio3gpSize = (TInt) (GetAudio3gpSizePerSample(numberOfAudioSamples) * numberOfAudioSamples); |
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554 |
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555 // Check if target size is reached |
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556 if (videoDataSize + audioDataSize + video3gpSize + audio3gpSize + KSEFixedSize >= aTargetSize) |
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557 { |
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558 aEndTime = currentTime; |
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559 |
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560 // Make sure we didn't overflow the end time |
|
561 if (aEndTime > movie->Duration()) |
|
562 { |
|
563 aEndTime = movie->Duration(); |
|
564 } |
|
565 |
|
566 return KErrNone; |
|
567 } |
|
568 |
|
569 currentTime += frameDuration; |
|
570 } |
|
571 } |
|
572 |
|
573 // Target size not reached till end of movie |
|
574 aEndTime = movie->Duration(); |
|
575 |
|
576 return KErrNone; |
|
577 } |
|
578 |
|
579 // ----------------------------------------------------------------------------- |
|
580 // CSizeEstimate::GetTransitionFrames |
|
581 // Returns the number of start and end transition frames in given clip |
|
582 // (other items were commented in a header). |
|
583 // ----------------------------------------------------------------------------- |
|
584 // |
|
585 void CSizeEstimate::GetTransitionFrames(const CVedMovieImp *aMovie, TInt aIndex, |
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586 TInt& aStartTransitionFrames, TInt& aEndTransitionFrames) |
|
587 { |
|
588 aStartTransitionFrames = 0; |
|
589 aEndTransitionFrames = 0; |
|
590 |
|
591 CVedVideoClip* vedClip = aMovie->VideoClip(aIndex); |
|
592 |
|
593 // Get the number of video frames in the clip |
|
594 TInt videoFramesInClip = 0; |
|
595 if (vedClip->Info()->Class() == EVedVideoClipClassGenerated) |
|
596 { |
|
597 videoFramesInClip = vedClip->Info()->Generator()->VideoFrameCount(); |
|
598 } |
|
599 else |
|
600 { |
|
601 videoFramesInClip = vedClip->Info()->VideoFrameCount(); |
|
602 } |
|
603 |
|
604 // Calculate the amount of start transition frames in the clip |
|
605 if (aIndex == 0) |
|
606 { |
|
607 // First clip in the movie so check movie start transition |
|
608 if (aMovie->StartTransitionEffect() != EVedStartTransitionEffectNone) |
|
609 { |
|
610 aStartTransitionFrames = KSEFadeTransitionFrames; // Fade from |
|
611 } |
|
612 } |
|
613 else if (aMovie->MiddleTransitionEffect(aIndex - 1) != EVedMiddleTransitionEffectNone) |
|
614 { |
|
615 // Check if the previous clip has a middle transition |
|
616 if (aMovie->MiddleTransitionEffect(aIndex - 1) == EVedMiddleTransitionEffectDipToBlack || |
|
617 aMovie->MiddleTransitionEffect(aIndex - 1) == EVedMiddleTransitionEffectDipToWhite) |
|
618 { |
|
619 aStartTransitionFrames = KSEFadeTransitionFrames; // Dip |
|
620 } |
|
621 else |
|
622 { |
|
623 aStartTransitionFrames = KSEWipeTransitionFrames; // Wipe / crossfade |
|
624 } |
|
625 } |
|
626 |
|
627 // Calculate the amount of end transition frames in the clip |
|
628 if (aIndex == aMovie->VideoClipCount() - 1) |
|
629 { |
|
630 // Last clip in the movie so check movie end transition |
|
631 if (aMovie->EndTransitionEffect() != EVedEndTransitionEffectNone) |
|
632 { |
|
633 aEndTransitionFrames = KSEFadeTransitionFrames; // Fade to |
|
634 } |
|
635 } |
|
636 else if (aMovie->MiddleTransitionEffect(aIndex) != EVedMiddleTransitionEffectNone) |
|
637 { |
|
638 // Check if this clip has a middle transition |
|
639 if (aMovie->MiddleTransitionEffect(aIndex) == EVedMiddleTransitionEffectDipToBlack || |
|
640 aMovie->MiddleTransitionEffect(aIndex) == EVedMiddleTransitionEffectDipToWhite) |
|
641 { |
|
642 aEndTransitionFrames = KSEFadeTransitionFrames; // Dip |
|
643 } |
|
644 else |
|
645 { |
|
646 aEndTransitionFrames = KSEWipeTransitionFrames; // Wipe / crossfade |
|
647 } |
|
648 } |
|
649 |
|
650 // Check that the number of transition frames does not overflow |
|
651 if (aStartTransitionFrames > videoFramesInClip) |
|
652 { |
|
653 aStartTransitionFrames = videoFramesInClip; |
|
654 } |
|
655 if (aEndTransitionFrames > videoFramesInClip - aStartTransitionFrames) |
|
656 { |
|
657 aEndTransitionFrames = videoFramesInClip - aStartTransitionFrames; |
|
658 } |
|
659 } |
|
660 |
|
661 // ----------------------------------------------------------------------------- |
|
662 // CSizeEstimate::GetGeneratedFrameSize |
|
663 // Estimates the average generated frame size |
|
664 // (other items were commented in a header). |
|
665 // ----------------------------------------------------------------------------- |
|
666 // |
|
667 TInt CSizeEstimate::GetGeneratedFrameSize(const CVedMovieImp *aMovie, TBool aIntra) |
|
668 { |
|
669 TInt frameFactor = 0; |
|
670 |
|
671 // Estimate the frame factor based on codec type |
|
672 if (aMovie->VideoType() == EVedVideoTypeMPEG4SimpleProfile) |
|
673 { |
|
674 // MPEG-4 |
|
675 frameFactor = aIntra ? KSEGeneratedIFrameFactorMPEG4 : KSEGeneratedPFrameFactorMPEG4; |
|
676 } |
|
677 else if (aMovie->VideoType() == EVedVideoTypeAVCBaselineProfile) |
|
678 { |
|
679 // H.264 |
|
680 frameFactor = aIntra ? KSEGeneratedIFrameFactorH264 : KSEGeneratedPFrameFactorH264; |
|
681 } |
|
682 else |
|
683 { |
|
684 // H.263 |
|
685 frameFactor = aIntra ? KSEGeneratedIFrameFactorH263 : KSEGeneratedPFrameFactorH263; |
|
686 } |
|
687 |
|
688 // Estimate frame size based on movie resolution and frame factor |
|
689 return (aMovie->Resolution().iWidth * frameFactor) >> 3; // Convert bits to bytes |
|
690 } |
|
691 |
|
692 // ----------------------------------------------------------------------------- |
|
693 // CSizeEstimate::GetBlackFrameSize |
|
694 // Estimates the average black frame size |
|
695 // (other items were commented in a header). |
|
696 // ----------------------------------------------------------------------------- |
|
697 // |
|
698 TInt CSizeEstimate::GetBlackFrameSize(const CVedMovieImp *aMovie, TBool aIntra) |
|
699 { |
|
700 TInt frameFactor = aIntra ? KSEBlackIFrameFactor : KSEBlackPFrameFactor; |
|
701 |
|
702 return (aMovie->Resolution().iWidth * frameFactor) >> 3; // Convert bits to bytes |
|
703 } |
|
704 |
|
705 // ----------------------------------------------------------------------------- |
|
706 // CSizeEstimate::GetVideo3gpSizePerFrame |
|
707 // Returns the 3gp size for video based on number of video frames |
|
708 // (other items were commented in a header). |
|
709 // ----------------------------------------------------------------------------- |
|
710 // |
|
711 TInt CSizeEstimate::GetVideo3gpSizePerFrame(TInt aNumberOfVideoFrames) |
|
712 { |
|
713 TInt video3gpSize = KSEVideo3gpSizePerFrame6; |
|
714 |
|
715 if (aNumberOfVideoFrames < KSEVideo3gpFramesLimit1) video3gpSize = KSEVideo3gpSizePerFrame1; |
|
716 else if (aNumberOfVideoFrames < KSEVideo3gpFramesLimit2) video3gpSize = KSEVideo3gpSizePerFrame2; |
|
717 else if (aNumberOfVideoFrames < KSEVideo3gpFramesLimit3) video3gpSize = KSEVideo3gpSizePerFrame3; |
|
718 else if (aNumberOfVideoFrames < KSEVideo3gpFramesLimit4) video3gpSize = KSEVideo3gpSizePerFrame4; |
|
719 else if (aNumberOfVideoFrames < KSEVideo3gpFramesLimit5) video3gpSize = KSEVideo3gpSizePerFrame5; |
|
720 |
|
721 return video3gpSize; |
|
722 } |
|
723 |
|
724 // ----------------------------------------------------------------------------- |
|
725 // CSizeEstimate::GetAudio3gpSizePerSample |
|
726 // Returns the 3gp size for audio based on number of audio samples |
|
727 // (other items were commented in a header). |
|
728 // ----------------------------------------------------------------------------- |
|
729 // |
|
730 TReal CSizeEstimate::GetAudio3gpSizePerSample(TReal aNumberOfAudioSamples) |
|
731 { |
|
732 TReal audio3gpSize = KSEAudio3gpSizePerSample8; |
|
733 |
|
734 if (aNumberOfAudioSamples < KSEAudio3gpSamplesLimit1) audio3gpSize = KSEAudio3gpSizePerSample1; |
|
735 else if (aNumberOfAudioSamples < KSEAudio3gpSamplesLimit2) audio3gpSize = KSEAudio3gpSizePerSample2; |
|
736 else if (aNumberOfAudioSamples < KSEAudio3gpSamplesLimit3) audio3gpSize = KSEAudio3gpSizePerSample3; |
|
737 else if (aNumberOfAudioSamples < KSEAudio3gpSamplesLimit4) audio3gpSize = KSEAudio3gpSizePerSample4; |
|
738 else if (aNumberOfAudioSamples < KSEAudio3gpSamplesLimit5) audio3gpSize = KSEAudio3gpSizePerSample5; |
|
739 else if (aNumberOfAudioSamples < KSEAudio3gpSamplesLimit6) audio3gpSize = KSEAudio3gpSizePerSample6; |
|
740 else if (aNumberOfAudioSamples < KSEAudio3gpSamplesLimit7) audio3gpSize = KSEAudio3gpSizePerSample7; |
|
741 |
|
742 return audio3gpSize; |
|
743 } |
|
744 |
|
745 |
|
746 // End of File |
|
747 |
|