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 |
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21 #include <f32file.h> |
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22 #include "AudPanic.h" |
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23 #include "ProcInFileHandler.h" |
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24 #include "AudClipInfo.h" |
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25 #include "ProcTools.h" |
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26 #include "audconstants.h" |
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27 |
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28 // Debug print macro |
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29 #if defined _DEBUG |
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30 #include <e32svr.h> |
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31 #define PRINT(x) RDebug::Print x; |
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32 #else |
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33 #define PRINT(x) |
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34 #endif |
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35 |
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36 CProcInFileHandler::~CProcInFileHandler() |
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37 { |
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38 |
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39 if (iFileOpen && iOwnsFile) |
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40 { |
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41 iFile.Close(); |
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42 iFs.Close(); |
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43 } |
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44 |
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45 |
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46 if (iProperties != 0) |
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47 { |
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48 delete iProperties; |
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49 iProperties = 0; |
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50 } |
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51 |
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52 |
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53 delete iRawSilentFrame; |
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54 |
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55 delete iInputBuffer; |
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56 |
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57 delete iWavFrameHandler; |
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58 |
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59 } |
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60 |
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61 |
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62 TBool CProcInFileHandler::DecodingRequired() |
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63 { |
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64 return iDecodingRequired; |
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65 } |
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66 |
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67 |
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68 TInt CProcInFileHandler::GetDecodedFrameSize() |
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69 { |
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70 if (iProperties == 0) |
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71 { |
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72 return 0; |
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73 } |
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74 else |
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75 { |
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76 |
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77 // divided by 1000000/2 cause time is in |
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78 // microseconds and 16 bits are used for one sample |
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79 #ifdef EKA2 |
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80 TInt frameSize = (iProperties->iFrameDuration.Int64())*(iTargetSampleRate)/(1000000/2); |
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81 #else |
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82 TInt frameSize = (iProperties->iFrameDuration.Int64().GetTInt())*(iTargetSampleRate)/(1000000/2); |
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83 #endif |
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84 |
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85 |
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86 if (iChannelMode == EAudStereo) |
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87 { |
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88 frameSize *= 2; |
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89 } |
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90 |
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91 return frameSize; |
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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 |
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97 |
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98 void CProcInFileHandler::SetDecodingRequired(TBool aDecodingRequired) |
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99 { |
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100 iDecodingRequired = aDecodingRequired; |
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101 |
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102 } |
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103 |
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104 TBool CProcInFileHandler::GetAudioFrameL(HBufC8*& aFrame, TInt& aSize, TInt32& aTime, TBool& aRawFrame) |
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105 { |
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106 |
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107 if (iDecodingRequired) |
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108 { |
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109 aRawFrame = ETrue; |
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110 return GetRawAudioFrameL(aFrame, aSize, aTime); |
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111 } |
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112 else |
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113 { |
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114 aRawFrame = EFalse; |
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115 return GetEncAudioFrameL(aFrame, aSize, aTime); |
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116 |
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117 } |
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118 } |
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119 |
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120 |
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121 TBool CProcInFileHandler::GetRawAudioFrameL(HBufC8*& aFrame, TInt& aSize, TInt32& aTime) |
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122 { |
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123 |
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124 |
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125 while (iInputBuffer == 0 || iInputBuffer->Length() < iRawFrameLength) |
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126 { |
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127 TBool ret = GetOneRawAudioFrameL(aFrame, aSize, aTime); |
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128 if (!ret) |
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129 { |
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130 return ret; |
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131 } |
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132 |
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133 WriteDataToInputBufferL(*aFrame); |
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134 delete aFrame; |
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135 aFrame = 0; |
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136 |
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137 } |
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138 |
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139 if (iInputBuffer->Length() >= iRawFrameLength) |
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140 { |
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141 aFrame = HBufC8::NewL(iRawFrameLength); |
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142 aFrame->Des().Append(iInputBuffer->Left(iRawFrameLength)); |
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143 |
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144 |
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145 TInt bytesInSecond = iTargetSampleRate*2; |
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146 |
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147 if (iChannelMode == EAudStereo) |
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148 { |
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149 bytesInSecond *= 2; |
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150 } |
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151 |
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152 |
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153 // Fix for synchronizing problem ----------------------------------> |
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154 // If the accurate frame length cannot be represented in milliseconds |
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155 // store the remainder and increase the output frame lenght by one ms |
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156 // when needed. Accuracy depends on sampling rate |
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157 |
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158 TReal accurateFrameLen = TReal(aFrame->Length()*1000)/bytesInSecond; |
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159 aTime = TUint((aFrame->Length()*1000)/bytesInSecond); |
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160 |
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161 iFrameLenRemainderMilli += accurateFrameLen - aTime; |
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162 |
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163 if (iFrameLenRemainderMilli > 1) |
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164 { |
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165 aTime += 1; |
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166 iFrameLenRemainderMilli -= 1; |
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167 } |
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168 // <---------------------------------- Fix for synchronizing problem |
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169 |
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170 iInputBuffer->Des().Delete(0, iRawFrameLength); |
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171 |
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172 |
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173 } |
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174 |
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175 return ETrue; |
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176 |
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177 |
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178 } |
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179 |
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180 |
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181 TBool CProcInFileHandler::GetOneRawAudioFrameL(HBufC8*& aFrame, TInt& aSize, TInt32& aTime) |
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182 { |
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183 |
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184 |
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185 TInt size = 0; |
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186 |
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187 TInt32 time = 0; |
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188 |
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189 HBufC8* frame = 0; |
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190 |
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191 TBool encFrameRead = GetEncAudioFrameL(frame, size, time); |
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192 |
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193 if (encFrameRead) |
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194 { |
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195 CleanupStack::PushL(frame); |
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196 } |
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197 |
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198 aTime = time; |
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199 |
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200 if (!encFrameRead) |
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201 { |
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202 return EFalse; |
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203 } |
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204 |
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205 TRAPD(err, iDecoder->FillDecBufferL(frame, aFrame)); |
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206 if (err == KErrNotFound) |
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207 { |
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208 // S60 audio decoders seem to leave with KErrNotFound if they find problems in input clips. |
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209 // However, sometimes the problem is only in one frame, e.g. the 1st frame may contain some metadata that can't be decoded, |
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210 // but decoding can continue after that. But if there are many errors, the clip is most likely unusable. |
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211 PRINT((_L("CProcInFileHandler::GetOneRawAudioFrameL() iDecoder->FillDecBufferL leaved with %d"),err)); |
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212 if ( iDecoderErrors > 0 ) |
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213 { |
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214 // several errors, leave, but change the error code to more readable |
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215 PRINT((_L("CProcInFileHandler::GetOneRawAudioFrameL() leave with %d"),KErrCorrupt)); |
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216 User::Leave(KErrCorrupt); |
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217 } |
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218 iDecoderErrors++; |
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219 } |
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220 else if (err == KErrNone) |
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221 { |
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222 // keep filling the decoder buffer; the decoder seem to leave with KErrNone if it can't get enough data, ignore the leave |
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223 } |
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224 else |
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225 { |
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226 // some other error |
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227 PRINT((_L("CProcInFileHandler::GetOneRawAudioFrameL() iDecoder->FillDecBufferL leaved with %d, leaving"),err)); |
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228 User::Leave(err); |
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229 } |
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230 |
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231 if (encFrameRead) |
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232 { |
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233 CleanupStack::PopAndDestroy(frame); |
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234 frame = 0; |
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235 |
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236 } |
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237 |
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238 while (aFrame == 0 || aFrame->Size() == 0) |
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239 { |
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240 |
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241 encFrameRead = GetEncAudioFrameL(frame, size, time); |
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242 |
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243 if (encFrameRead) |
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244 { |
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245 CleanupStack::PushL(frame); |
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246 } |
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247 else |
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248 { |
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249 return EFalse; |
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250 } |
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251 |
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252 |
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253 aTime += time; |
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254 |
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255 |
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256 |
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257 iDecoder->FillDecBufferL(frame, aFrame); |
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258 if (encFrameRead) |
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259 { |
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260 CleanupStack::PopAndDestroy(frame); |
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261 frame = 0; |
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262 } |
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263 |
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264 } |
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265 |
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266 |
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267 aSize = aFrame->Length(); |
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268 |
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269 if (iProperties->iAudioTypeExtension != EAudExtensionTypeNoExtension) |
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270 { |
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271 |
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272 // AACPlus is always decoded, therefore the gain manipulation can be done |
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273 // in time domain |
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274 |
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275 ManipulateGainL(aFrame); |
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276 aSize = aFrame->Length(); |
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277 |
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278 |
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279 } |
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280 |
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281 |
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282 return ETrue; |
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283 |
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284 } |
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285 |
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286 |
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287 TBool CProcInFileHandler::SetRawAudioFrameSize(TInt aSize) |
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288 { |
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289 |
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290 const TInt KMaxRawFrameSize = 4096; |
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291 if (aSize > 0 && aSize <= KMaxRawFrameSize) |
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292 { |
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293 iRawFrameLength = aSize; |
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294 return ETrue; |
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295 } |
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296 |
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297 return EFalse; |
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298 } |
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299 |
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300 TBool CProcInFileHandler::GetSilentAudioFrameL(HBufC8*& aFrame, TInt& aSize, TInt32& aTime, TBool& aRawFrame) |
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301 { |
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302 |
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303 if (iDecodingRequired) |
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304 { |
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305 aRawFrame = ETrue; |
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306 return GetRawSilentAudioFrameL(aFrame, aSize, aTime); |
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307 |
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308 } |
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309 |
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310 else |
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311 { |
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312 aRawFrame = EFalse; |
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313 return GetEncSilentAudioFrameL(aFrame, aSize, aTime); |
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314 } |
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315 } |
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316 |
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317 |
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318 |
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319 |
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320 TBool CProcInFileHandler::GetRawSilentAudioFrameL(HBufC8*& aFrame, TInt& aSize, TInt32& aDuration) |
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321 { |
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322 |
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323 |
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324 aFrame = HBufC8::NewL(iRawFrameLength); |
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325 aFrame->Des().Fill(0, aFrame->Des().MaxLength()); |
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326 |
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327 TInt bytesInSecond = iTargetSampleRate*2; |
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328 |
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329 if (iChannelMode == EAudStereo) |
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330 { |
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331 bytesInSecond *= 2; |
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332 } |
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333 |
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334 aDuration = TUint((aFrame->Length()*1000)/bytesInSecond); |
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335 aSize = aFrame->Length(); |
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336 |
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337 |
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338 // input buffer is created only if needed |
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339 if (iInputBuffer) |
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340 { |
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341 iInputBuffer->Des().Delete(0, iInputBuffer->Size()); |
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342 |
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343 } |
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344 return ETrue; |
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345 |
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346 } |
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347 |
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348 TBool CProcInFileHandler::GetEncSilentAudioFrameL(HBufC8*& aFrame, TInt& aSize, TInt32& aDuration) |
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349 { |
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350 |
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351 if (iSilentFrame == 0) |
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352 { |
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353 return EFalse; |
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354 } |
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355 |
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356 aFrame = HBufC8::NewL(iSilentFrame->Size()); |
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357 aFrame->Des().Append(iSilentFrame->Des()); |
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358 |
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359 aDuration = iSilentFrameDuration; |
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360 aSize = iSilentFrame->Size(); |
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361 return ETrue; |
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362 |
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363 } |
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364 |
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365 |
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366 CProcInFileHandler::CProcInFileHandler() : iFileOpen(EFalse) |
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367 { |
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368 |
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369 |
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370 |
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371 } |
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372 |
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373 TInt32 CProcInFileHandler::GetCurrentTimeMilliseconds() |
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374 { |
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375 return iCurrentTimeMilliseconds; |
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376 |
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377 } |
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378 |
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379 // default implementation for files that do not have buffered bytes |
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380 TBool CProcInFileHandler::ReadAudioDecoderSpecificInfoL(HBufC8*& /*aBytes*/, TInt /*aBufferSize*/) |
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381 { |
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382 return EFalse; |
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383 } |
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384 |
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385 TBool CProcInFileHandler::OpenFileForReadingL() |
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386 { |
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387 |
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388 if (iFileOpen) |
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389 { |
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390 User::Leave(KErrGeneral); |
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391 } |
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392 |
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393 TInt err = iFs.Connect(); |
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394 if (err != KErrNone) |
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395 { |
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396 iFileOpen = EFalse; |
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397 User::Leave(err); |
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398 } |
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399 |
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400 err=iFile.Open(iFs, iFileName->Des(), EFileShareReadersOnly); |
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401 if (err != KErrNone) |
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402 { |
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403 err=iFile.Open(iFs, iFileName->Des(), EFileShareAny); |
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404 } |
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405 if (err != KErrNone) |
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406 { |
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407 iFileOpen = EFalse; |
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408 iFs.Close(); |
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409 User::Leave(err); |
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410 } |
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411 else |
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412 { |
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413 iFileOpen = ETrue; |
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414 return ETrue; |
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415 } |
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416 |
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417 return EFalse; |
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418 |
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419 } |
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420 |
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421 TBool CProcInFileHandler:: |
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422 SetPropertiesL(TAudFileProperties aProperties) |
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423 { |
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424 if(iProperties == 0) |
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425 iProperties = new (ELeave) TAudFileProperties(); |
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426 |
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427 iProperties->iAudioType = aProperties.iAudioType; |
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428 iProperties->iBitrate = aProperties.iBitrate; |
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429 iProperties->iBitrateMode = aProperties.iBitrateMode; |
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430 iProperties->iChannelMode = aProperties.iChannelMode; |
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431 iProperties->iDuration = 0; |
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432 iProperties->iFileFormat = aProperties.iFileFormat; |
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433 iProperties->iSamplingRate = aProperties.iSamplingRate; |
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434 iProperties->iFrameLen = aProperties.iFrameLen; |
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435 iProperties->iFrameDuration = aProperties.iFrameDuration; |
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436 iProperties->iFrameCount = aProperties.iFrameCount; |
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437 |
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438 return (ETrue); |
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439 } |
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440 |
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441 TBool CProcInFileHandler::SetPriority(TInt aPriority) |
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442 { |
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443 if (aPriority < 0) return EFalse; |
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444 |
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445 iPriority = aPriority; |
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446 |
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447 return ETrue; |
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448 |
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449 } |
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450 TInt CProcInFileHandler::Priority() const |
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451 { |
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452 return iPriority; |
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453 |
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454 } |
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455 |
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456 TBool CProcInFileHandler::CloseFile() |
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457 { |
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458 |
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459 if (iOwnsFile) |
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460 { |
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461 iFile.Close(); |
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462 iFs.Close(); |
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463 iFileOpen = EFalse; |
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464 } |
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465 |
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466 return ETrue; |
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467 |
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468 } |
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469 |
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470 |
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471 |
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472 TBool CProcInFileHandler::InitAndOpenFileL(const TDesC& aFileName, |
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473 RFile* aFileHandle, |
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474 TInt aReadBufferSize) |
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475 { |
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476 |
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477 |
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478 iBufferStartOffset = 0; |
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479 iBufferEndOffset = 0; |
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480 iCutInTime = 0; |
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481 |
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482 if (!aFileHandle) |
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483 { |
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484 iFileName = HBufC::NewL(aFileName.Length()); |
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485 *iFileName = aFileName; |
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486 } |
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487 |
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488 iReadBufferSize = aReadBufferSize; |
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489 iReadBuffer = HBufC8::NewL(iReadBufferSize); |
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490 |
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491 const TInt KVedACSizeAMRBuffer = 320; |
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492 |
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493 // [JK]: Moved from OpenFileForReadingL |
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494 // AMR buffer is the smallest possible |
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495 // buffersize fill be increased if needed |
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496 iRawFrameLength = KVedACSizeAMRBuffer; |
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497 iInputBuffer = HBufC8::NewL(iRawFrameLength); |
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498 |
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499 if (aFileHandle) |
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500 { |
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501 iFile = *aFileHandle; |
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502 iOwnsFile = EFalse; |
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503 iFileOpen = ETrue; |
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504 return 0; |
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505 } |
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506 |
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507 TBool err = OpenFileForReadingL(); |
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508 if (!err) iFileOpen = ETrue; |
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509 |
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510 iOwnsFile = ETrue; |
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511 |
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512 return err; |
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513 |
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514 } |
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515 |
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516 void CProcInFileHandler::ResetAndCloseFile() |
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517 { |
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518 |
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519 if (iFileOpen) |
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520 { |
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521 CloseFile(); |
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522 } |
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523 if (iFileName != 0) |
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524 delete iFileName; |
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525 iFileName = 0; |
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526 if (iReadBuffer != 0) |
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527 delete iReadBuffer; |
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528 iReadBuffer = 0; |
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529 |
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530 delete iRawSilentFrame; |
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531 iRawSilentFrame = 0; |
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532 |
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533 |
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534 |
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535 } |
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536 |
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537 TInt CProcInFileHandler::BufferedFileRead(TInt aPos,TDes8& aDes) |
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538 { |
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539 TInt bufSize; |
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540 |
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541 if (!iFileOpen) |
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542 { |
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543 TAudPanic::Panic(TAudPanic::EInternal); |
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544 } |
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545 |
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546 TBool readingNeeded = EFalse; |
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547 |
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548 if (aPos < iBufferStartOffset || aPos + aDes.MaxSize() > iBufferEndOffset) |
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549 { |
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550 readingNeeded = ETrue; |
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551 } |
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552 |
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553 if(readingNeeded) |
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554 { |
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555 TInt fSize; |
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556 |
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557 iFile.Size(fSize); |
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558 if(aPos >= fSize) |
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559 { |
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560 aDes.SetLength(0); |
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561 return 0; |
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562 } |
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563 |
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564 TPtr8 tmpDes((TPtr8)iReadBuffer->Des()); |
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565 |
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566 iFile.Read(aPos, (TPtr8&)tmpDes, iReadBufferSize); |
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567 |
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568 iBufferStartOffset = aPos; |
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569 iBufferEndOffset = aPos+iReadBuffer->Des().Size()-1; |
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570 } |
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571 |
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572 if (iReadBuffer->Size() == 0) |
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573 { |
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574 return 0; |
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575 } |
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576 else |
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577 { |
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578 bufSize = Min(iReadBuffer->Des().Length(), aDes.MaxSize()); |
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579 aDes.Copy(iReadBuffer->Des().Mid(aPos-iBufferStartOffset, bufSize)); |
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580 iFilePos = aPos+aDes.Size(); |
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581 |
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582 return aDes.Size(); |
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583 } |
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584 } |
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585 |
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586 TInt CProcInFileHandler::BufferedFileRead(TDes8& aDes) |
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587 { |
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588 |
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589 if (!iFileOpen) |
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590 { |
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591 TAudPanic::Panic(TAudPanic::EInternal); |
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592 } |
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593 |
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594 return BufferedFileRead(iFilePos, aDes); |
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595 |
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596 |
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597 } |
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598 |
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599 TInt CProcInFileHandler::BufferedFileRead(TDes8& aDes,TInt aLength) |
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600 { |
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601 TInt bufSize; |
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602 |
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603 if (!iFileOpen) |
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604 { |
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605 TAudPanic::Panic(TAudPanic::EInternal); |
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606 } |
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607 |
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608 aDes.Zero(); |
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609 |
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610 TBool readingNeeded = EFalse; |
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611 |
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612 if (iFilePos < iBufferStartOffset || iFilePos + aLength-1 > iBufferEndOffset) |
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613 { |
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614 readingNeeded = ETrue; |
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615 } |
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616 |
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617 if(readingNeeded) |
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618 { |
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619 TPtr8 tmpDes((TPtr8)iReadBuffer->Des()); |
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620 |
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621 iFile.Read(iFilePos, (TPtr8&)tmpDes, iReadBufferSize); |
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622 |
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623 if (iReadBuffer->Size() == 0) return 0; |
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624 iFile.Seek(ESeekStart, iFilePos); |
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625 iBufferStartOffset = iFilePos; |
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626 iBufferEndOffset = iFilePos+iReadBuffer->Des().Size()-1; |
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627 } |
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628 bufSize = Min(iReadBuffer->Des().Length(), aLength); |
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629 aDes.Copy(iReadBuffer->Des().Mid(iFilePos-iBufferStartOffset, bufSize)); |
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630 iFilePos = iFilePos+aDes.Size(); |
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631 return aDes.Size(); |
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632 |
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633 } |
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634 |
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635 TInt CProcInFileHandler::BufferedFileReadChar(TInt aPos, TUint8& aChar) |
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636 { |
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637 |
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638 TBuf8<1> cha; |
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639 BufferedFileRead(aPos, cha); |
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640 |
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641 if (cha.Size() == 1) |
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642 { |
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643 aChar = cha[0]; |
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644 return 1; |
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645 } |
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646 else |
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647 { |
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648 return 0; |
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649 } |
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650 |
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651 } |
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652 |
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653 TBool CProcInFileHandler::BufferedFileSetFilePos(TInt aPos) |
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654 { |
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655 |
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656 |
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657 TInt fileSize = 0; |
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658 iFile.Seek(ESeekEnd, fileSize); |
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659 |
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660 iFile.Seek(ESeekStart, aPos); |
|
661 |
|
662 if (aPos == 0) |
|
663 { |
|
664 iBufferStartOffset = 0; |
|
665 iBufferEndOffset = 0; |
|
666 |
|
667 } |
|
668 |
|
669 if (aPos < 0) |
|
670 { |
|
671 return EFalse; |
|
672 } |
|
673 else if (aPos > fileSize) |
|
674 { |
|
675 return EFalse; |
|
676 } |
|
677 else |
|
678 { |
|
679 iFilePos = aPos; |
|
680 } |
|
681 return ETrue; |
|
682 } |
|
683 |
|
684 TInt CProcInFileHandler::BufferedFileGetFilePos() |
|
685 { |
|
686 |
|
687 return iFilePos; |
|
688 |
|
689 } |
|
690 |
|
691 TInt CProcInFileHandler::BufferedFileGetSize() |
|
692 { |
|
693 |
|
694 TInt fileSize = 0; |
|
695 iFile.Size(fileSize); |
|
696 |
|
697 return fileSize; |
|
698 |
|
699 |
|
700 } |
|
701 |
|
702 |
|
703 TInt8 CProcInFileHandler::NormalizingMargin() const |
|
704 { |
|
705 return iNormalizingMargin; |
|
706 } |
|
707 |
|
708 TBool CProcInFileHandler::ManipulateGainL(HBufC8*& aFrameIn) |
|
709 { |
|
710 |
|
711 if (iClip == 0) |
|
712 { |
|
713 return ETrue; |
|
714 } |
|
715 |
|
716 if (iProperties->iAudioTypeExtension != EAudExtensionTypeNoExtension) |
|
717 { |
|
718 |
|
719 // gain manipulation with AACPlus is done in time domain |
|
720 |
|
721 if (iWavFrameHandler == 0) |
|
722 { |
|
723 |
|
724 const TInt KBitDepth = 16; |
|
725 iWavFrameHandler = CProcWAVFrameHandler::NewL(KBitDepth); |
|
726 } |
|
727 |
|
728 |
|
729 } |
|
730 |
|
731 |
|
732 // check if the clip is normalized |
|
733 TInt8 normalizingGain1 = iNormalizingMargin; |
|
734 |
|
735 // check what is the current gain according to dynamic level marks |
|
736 TInt8 newGain1 = GetGainNow(); |
|
737 |
|
738 |
|
739 // the combination of dynamic level marks + normalizing |
|
740 TInt8 normalizedGain1 = 0; |
|
741 if ( ((TInt)newGain1+normalizingGain1) > (TInt)KMaxTInt8) |
|
742 { |
|
743 normalizedGain1 = KMaxTInt8; |
|
744 } |
|
745 else |
|
746 { |
|
747 normalizedGain1 = static_cast<TInt8>(newGain1+normalizingGain1); |
|
748 } |
|
749 |
|
750 |
|
751 if (normalizedGain1 != 0) |
|
752 { |
|
753 HBufC8* frameOut = 0; |
|
754 // if we need to adjust gain... |
|
755 TBool manip = ETrue; |
|
756 if (iProperties->iAudioTypeExtension != EAudExtensionTypeNoExtension) |
|
757 { |
|
758 |
|
759 manip = iWavFrameHandler->ManipulateGainL(aFrameIn, frameOut, normalizedGain1); |
|
760 } |
|
761 else |
|
762 { |
|
763 manip = iFrameHandler->ManipulateGainL(aFrameIn, frameOut, normalizedGain1); |
|
764 } |
|
765 |
|
766 |
|
767 if (manip) |
|
768 { |
|
769 |
|
770 CleanupStack::PushL(aFrameIn); |
|
771 CleanupStack::PushL(frameOut); |
|
772 |
|
773 if (frameOut->Size() > aFrameIn->Size()) |
|
774 { |
|
775 // if manipulated frame was longer than the original |
|
776 aFrameIn = aFrameIn->ReAllocL(frameOut->Size()); |
|
777 |
|
778 } |
|
779 aFrameIn->Des().Delete(0, aFrameIn->Size()); |
|
780 aFrameIn->Des().Copy(frameOut->Des()); |
|
781 |
|
782 CleanupStack::PopAndDestroy(frameOut); |
|
783 CleanupStack::Pop(); // aFrameIn |
|
784 } |
|
785 |
|
786 |
|
787 } |
|
788 else |
|
789 { |
|
790 return EFalse; |
|
791 } |
|
792 |
|
793 return ETrue; |
|
794 } |
|
795 |
|
796 TInt8 CProcInFileHandler::GetGainNow() |
|
797 { |
|
798 TInt markAmount = iClip->DynamicLevelMarkCount(); |
|
799 TTimeIntervalMicroSeconds ti(0); |
|
800 TAudDynamicLevelMark previous(ti,0); |
|
801 //TInt32 durationMilliseconds = (aClip->Info()->Properties().iDuration.Int64()/1000).GetTInt(); |
|
802 TAudDynamicLevelMark next(iClip->Info()->Properties().iDuration,0); |
|
803 |
|
804 for (TInt a = 0 ; a < markAmount ; a++) |
|
805 { |
|
806 TAudDynamicLevelMark markNow = iClip->DynamicLevelMark(a); |
|
807 |
|
808 if (ProcTools::MilliSeconds(markNow.iTime) > iCurrentTimeMilliseconds) |
|
809 { |
|
810 next = markNow; |
|
811 break; |
|
812 } |
|
813 |
|
814 previous = markNow; |
|
815 |
|
816 } |
|
817 |
|
818 TInt32 previousMilli = ProcTools::MilliSeconds(previous.iTime); |
|
819 |
|
820 TInt32 nextMilli = ProcTools::MilliSeconds(next.iTime); |
|
821 |
|
822 TInt32 timeDifference = nextMilli - previousMilli; |
|
823 |
|
824 TInt8 previousLevel = previous.iLevel; |
|
825 TInt8 nextLevel = next.iLevel; |
|
826 |
|
827 // If the levels are positive then the amount of gain needs to be reduced |
|
828 if (previousLevel > 0) |
|
829 { |
|
830 previousLevel /= KAedPositiveGainDivider; |
|
831 } |
|
832 if (nextLevel > 0) |
|
833 { |
|
834 nextLevel /= KAedPositiveGainDivider; |
|
835 } |
|
836 |
|
837 if (timeDifference == 0) |
|
838 { |
|
839 return previousLevel; |
|
840 } |
|
841 |
|
842 TInt32 fraction = ((iCurrentTimeMilliseconds-previousMilli)*100)/timeDifference; |
|
843 TInt8 newGain = 0; |
|
844 |
|
845 TInt8 levelDifference = static_cast<TInt8>(Abs(nextLevel - previousLevel)); |
|
846 TInt8 inc = 0; |
|
847 if (fraction > 0) |
|
848 { |
|
849 inc = static_cast<TInt8>((levelDifference*fraction)/100); |
|
850 } |
|
851 |
|
852 if (nextLevel - previousLevel >= 0) |
|
853 { |
|
854 newGain = static_cast<TInt8>(previousLevel + inc); |
|
855 } |
|
856 else |
|
857 { |
|
858 newGain = static_cast<TInt8>(previousLevel - inc); |
|
859 } |
|
860 |
|
861 return newGain; |
|
862 |
|
863 } |
|
864 |
|
865 TBool CProcInFileHandler::WriteDataToInputBufferL(const TDesC8& aData) |
|
866 { |
|
867 |
|
868 if (iInputBuffer == 0) |
|
869 { |
|
870 iInputBuffer = HBufC8::NewL(aData.Size()); |
|
871 } |
|
872 else if (iInputBuffer->Des().MaxSize() < iInputBuffer->Length() + aData.Length()) |
|
873 { |
|
874 iInputBuffer = iInputBuffer->ReAllocL(iInputBuffer->Length() + aData.Length()); |
|
875 } |
|
876 |
|
877 iInputBuffer->Des().Append(aData); |
|
878 |
|
879 return ETrue; |
|
880 |
|
881 } |
|