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1 /* |
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2 * Copyright (c) 2010 Ixonos Plc. |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - Initial contribution |
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11 * |
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12 * Contributors: |
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13 * Ixonos Plc |
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14 * |
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15 * Description: |
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16 * |
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17 */ |
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18 |
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19 |
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20 /*-- Project Headers. --*/ |
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21 #include "ProcMP3FrameHandler.h" |
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22 #include "ProcMP3InFileHandler.h" |
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23 #include "ProcFrameHandler.h" |
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24 |
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25 #include "MP3API.h" |
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26 |
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27 |
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28 //mixing files |
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29 |
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30 |
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31 |
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32 CProcMP3FrameHandler* |
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33 CProcMP3FrameHandler::NewL() |
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34 { |
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35 CProcMP3FrameHandler* self = NewLC(); |
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36 CleanupStack::Pop(self); |
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37 return self; |
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38 } |
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39 |
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40 CProcMP3FrameHandler* |
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41 CProcMP3FrameHandler::NewLC() |
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42 { |
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43 CProcMP3FrameHandler* self = new (ELeave) CProcMP3FrameHandler(); |
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44 CleanupStack::PushL(self); |
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45 self->ConstructL(); |
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46 return self; |
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47 } |
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48 |
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49 CProcMP3FrameHandler::~CProcMP3FrameHandler() |
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50 { |
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51 |
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52 if (iMp3Edit != 0) delete iMp3Edit; |
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53 |
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54 if (iMpAud != 0) |
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55 { |
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56 |
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57 delete iMpAud; |
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58 } |
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59 if (iTHandle != 0) |
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60 delete iTHandle; |
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61 |
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62 |
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63 } |
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64 |
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65 CProcMP3FrameHandler::CProcMP3FrameHandler() : decInitialized(EFalse) |
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66 { |
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67 |
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68 } |
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69 |
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70 void CProcMP3FrameHandler:: |
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71 ConstructL() |
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72 { |
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73 |
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74 iMp3Edit = CMp3Edit::NewL(); |
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75 |
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76 iTHandle = new (ELeave) TMpTransportHandle(); |
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77 |
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78 iMp3Edit->InitTransport(iTHandle); |
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79 |
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80 iMpAud = CMPAudDec::NewL(); |
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81 iMpAud->Init(iTHandle); |
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82 |
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83 |
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84 } |
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85 |
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86 TBool CProcMP3FrameHandler:: |
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87 ManipulateGainL(const HBufC8* aFrameIn, HBufC8*& aFrameOut, TInt8 aGain) |
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88 { |
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89 |
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90 aFrameOut = HBufC8::NewLC(aFrameIn->Size()); |
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91 |
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92 aFrameOut->Des().Copy(aFrameIn->Ptr(), aFrameIn->Size()); |
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93 |
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94 |
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95 RArray<TInt> gains; |
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96 CleanupClosePushL(gains); |
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97 TInt aMaxGain = 0; |
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98 TBitStream bs; |
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99 GetMP3Gains(aFrameOut, gains, aMaxGain, bs); |
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100 TUint8* globalGains = new (ELeave) TUint8[gains.Count()/2]; |
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101 CleanupStack::PushL(globalGains); |
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102 TUint* globalGainPos = new (ELeave) TUint[gains.Count()/2]; |
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103 CleanupStack::PushL(globalGainPos); |
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104 |
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105 |
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106 //for (TInt a = 0 ; a < gains.Count(); a++) |
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107 for (TInt a = 0 ; a < gains.Count()/2; a++) |
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108 { |
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109 |
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110 |
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111 TInt newGain = aGain*500; |
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112 newGain = newGain/1500; |
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113 |
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114 if (gains[a]+newGain < 0) globalGains[a] = 0; |
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115 else if(gains[a]+newGain > 255) globalGains[a] = 255; |
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116 else globalGains[a] = static_cast<TUint8>(gains[a*2]+newGain); |
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117 globalGainPos[a] = gains[a*2+1]; |
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118 } |
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119 |
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120 //SetMPGlobalGains(BitStream *bs, uint8 numGains, uint8 *globalGain, uint32 *gainPos); |
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121 |
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122 |
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123 iMp3Edit->SetMPGlobalGains(&bs, static_cast<TUint8>(gains.Count()/2), globalGains, globalGainPos); |
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124 |
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125 |
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126 //delete[] globalGains; |
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127 //delete[] globalGainPos; |
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128 CleanupStack::PopAndDestroy(globalGainPos); |
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129 CleanupStack::PopAndDestroy(globalGains); |
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130 CleanupStack::PopAndDestroy(&gains); |
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131 CleanupStack::Pop(); // aFrameOut |
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132 return ETrue; |
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133 |
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134 } |
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135 |
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136 TBool CProcMP3FrameHandler:: |
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137 GetGainL(const HBufC8* aFrame, RArray<TInt>& aGains, TInt& aMaxGain) const |
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138 { |
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139 RArray<TInt> gains; |
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140 TBitStream bs; |
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141 GetMP3Gains(aFrame, gains, aMaxGain, bs); |
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142 |
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143 |
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144 for (TInt a = 0 ; a < gains.Count(); a++) |
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145 { |
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146 TInt ga = gains[a]-120; |
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147 |
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148 if (ga < 0) ga = 0; |
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149 |
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150 ga = ga*ga; |
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151 ga = ga/50; |
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152 |
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153 aGains.Append(ga); |
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154 a++; |
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155 } |
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156 |
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157 gains.Reset(); |
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158 aMaxGain = 120; |
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159 return ETrue; |
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160 } |
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161 |
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162 TBool CProcMP3FrameHandler:: |
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163 GetMP3Gains(const HBufC8* aFrame, RArray<TInt>& aGains, TInt& aMaxGain, TBitStream& aBs) const |
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164 { |
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165 |
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166 TInt16 readBytes, frameBytes, headerBytes = 0; |
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167 |
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168 if (!decInitialized) |
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169 { |
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170 iMp3Edit->SeekSync(iTHandle, const_cast<unsigned char*>(aFrame->Ptr()), |
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171 aFrame->Length(), &readBytes, |
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172 &frameBytes, &headerBytes, (uint8) 1); |
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173 iMpAud->Init(iTHandle); |
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174 decInitialized = ETrue; |
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175 } |
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176 |
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177 |
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178 int16 i; |
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179 uint32 globalGainPos[4]; |
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180 uint8 globalGain[4], nBufs; |
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181 TBitStream bsTmp; |
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182 |
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183 const TInt headerLength = 4; |
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184 |
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185 TUint8* buf = const_cast<TUint8*>(aFrame->Right(aFrame->Size()-headerLength).Ptr()); |
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186 BsInit(&aBs, buf, aFrame->Size() - headerLength); |
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187 BsSaveBufState(&aBs, &bsTmp); |
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188 |
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189 //BsSaveBufState(&bsIn, &bsTmp); |
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190 |
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191 nBufs = iMp3Edit->GetMPGlobalGains(&bsTmp, iTHandle, globalGain, globalGainPos); |
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192 |
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193 for(i = 0; i < nBufs; i++) |
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194 { |
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195 TInt gg = globalGain[i]; |
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196 TInt ggp = globalGainPos[i]; |
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197 |
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198 aGains.Append(gg); |
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199 aGains.Append(ggp); |
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200 } |
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201 aMaxGain = 255; |
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202 |
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203 return (EFalse); |
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204 |
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205 } |
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206 |
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207 TBool CProcMP3FrameHandler:: |
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208 GetNormalizingMargin(const HBufC8* /*aFrame*/, TInt8& /*aMargin*/) const |
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209 { |
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210 return (EFalse); |
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211 } |
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212 |
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213 TBool CProcMP3FrameHandler::IsMixingAvailable() const |
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214 { |
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215 return EFalse; |
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216 } |
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217 |