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1 /* |
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2 * Copyright (c) 2010 ISB. |
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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 License "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 * ISB - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: USB driver for test |
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15 * |
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16 */ |
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17 |
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18 #include <kern_priv.h> |
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19 #include "webcamera_ldd.h" |
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20 #include <webcamera_driver.h> |
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21 |
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22 #define DP(format...) Kern::Printf(format) |
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23 |
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24 _LIT(KDriver1PanicCategory,"WebcameraDevice"); |
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25 |
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26 /** |
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27 *Create Logic device. |
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28 * |
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29 */ |
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30 DECLARE_STANDARD_LDD() |
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31 { |
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32 DP("DECLARE_STANDARD_LDD()"); |
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33 return new DWebcameraLogicalDevice; |
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34 } |
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35 |
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36 /** |
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37 Constructor |
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38 */ |
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39 DWebcameraLogicalDevice::DWebcameraLogicalDevice() |
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40 { |
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41 DP("DWebcameraLogicalDevice()"); |
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42 // Set version number for this device |
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43 iVersion=RWebcameraDevice::VersionRequired(); |
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44 // Indicate that we work with a PDD |
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45 iParseMask=KDeviceAllowPhysicalDevice; |
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46 } |
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47 |
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48 /** |
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49 Destructor |
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50 */ |
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51 DWebcameraLogicalDevice::~DWebcameraLogicalDevice() |
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52 { |
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53 } |
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54 |
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55 /** |
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56 Second stage constructor for DDriver1Factory. |
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57 This must at least set a name for the driver object. |
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58 |
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59 @return KErrNone if successful, otherwise one of the other system wide error codes. |
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60 */ |
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61 TInt DWebcameraLogicalDevice::Install() |
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62 { |
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63 DP("DWebcameraLogicalDevice::Install()"); |
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64 |
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65 return SetName(&RWebcameraDevice::Name()); |
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66 } |
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67 |
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68 /** |
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69 Return the drivers capabilities. |
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70 Called in the response to an RDevice::GetCaps() request. |
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71 |
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72 @param aDes User-side descriptor to write capabilities information into |
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73 */ |
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74 void DWebcameraLogicalDevice::GetCaps(TDes8& aDes) const |
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75 { |
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76 // Create a capabilities object |
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77 RWebcameraDevice::TCaps caps; |
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78 caps.iVersion = iVersion; |
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79 // Write it back to user memory |
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80 Kern::InfoCopy(aDes,(TUint8*)&caps,sizeof(caps)); |
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81 } |
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82 |
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83 /** |
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84 Called by the kernel's device driver framework to create a Logical Channel. |
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85 This is called in the context of the user thread (client) which requested the creation of a Logical Channel |
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86 (E.g. through a call to RBusLogicalChannel::DoCreate) |
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87 The thread is in a critical section. |
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88 |
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89 @param aChannel Set to point to the created Logical Channel |
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90 |
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91 @return KErrNone if successful, otherwise one of the other system wide error codes. |
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92 */ |
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93 TInt DWebcameraLogicalDevice::Create(DLogicalChannelBase*& aChannel) |
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94 { |
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95 DP("DWebcameraLogicalDevice::Create() start"); |
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96 aChannel = new DWebcameraLogicalChannel; |
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97 if(!aChannel) |
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98 return KErrNoMemory; |
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99 return KErrNone; |
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100 DP("DWebcameraLogicalDevice::Create() end"); |
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101 } |
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102 |
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103 /** |
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104 Constructor |
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105 */ |
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106 DWebcameraLogicalChannel::DWebcameraLogicalChannel() |
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107 : iReceiveDataDfc(GetOneFlameDfc, this, 1) |
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108 ,iCaptureDfc(CaptureDfc,this,1) |
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109 { |
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110 DP("DWebcameraLogicalChannel::DWebcameraLogicalChannel() start"); |
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111 |
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112 // Get pointer to client threads DThread object |
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113 iClient=&Kern::CurrentThread(); |
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114 // Open a reference on client thread so it's control block can't dissapear until |
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115 // this driver has finished with it. |
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116 ((DObject*)iClient)->Open(); |
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117 |
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118 DP("DWebcameraLogicalChannel::DWebcameraLogicalChannel() end"); |
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119 } |
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120 |
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121 /** |
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122 Destructor |
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123 */ |
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124 DWebcameraLogicalChannel::~DWebcameraLogicalChannel() |
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125 { |
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126 DP("DWebcameraLogicalChannel::~DWebcameraLogicalChannel() start"); |
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127 // Cancel all processing that we may be doing |
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128 DoCancel(RWebcameraDevice::EAllRequests); |
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129 if (iComm) |
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130 { |
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131 delete iComm; |
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132 } |
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133 if (iChunk) |
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134 { |
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135 Epoc::FreePhysicalRam(iPhysAddr, iSize); |
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136 } |
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137 // Close our reference on the client thread |
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138 Kern::SafeClose((DObject*&)iClient,NULL); |
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139 DP("DWebcameraLogicalChannel::~DWebcameraLogicalChannel() end"); |
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140 } |
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141 |
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142 /** |
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143 Called when a user thread requests a handle to this channel. |
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144 */ |
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145 TInt DWebcameraLogicalChannel::RequestUserHandle(DThread* aThread, TOwnerType aType) |
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146 { |
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147 // Make sure that only our client can get a handle |
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148 if (aType!=EOwnerThread || aThread!=iClient) |
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149 return KErrAccessDenied; |
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150 return KErrNone; |
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151 } |
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152 |
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153 /** |
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154 Second stage constructor called by the kernel's device driver framework. |
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155 This is called in the context of the user thread (client) which requested the creation of a Logical Channel |
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156 (E.g. through a call to RBusLogicalChannel::DoCreate) |
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157 The thread is in a critical section. |
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158 |
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159 @param aUnit The unit argument supplied by the client |
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160 @param aInfo The info argument supplied by the client |
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161 @param aVer The version argument supplied by the client |
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162 |
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163 @return KErrNone if successful, otherwise one of the other system wide error codes. |
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164 */ |
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165 TInt DWebcameraLogicalChannel::DoCreate(TInt /*aUnit*/, const TDesC8* /*aInfo*/, const TVersion& aVer) |
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166 { |
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167 DP("DWebcameraLogicalChannel::DoCreate() start"); |
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168 if(!Kern::CurrentThreadHasCapability(ECapability_None,__PLATSEC_DIAGNOSTIC_STRING("Checked by Webcamera"))) |
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169 { |
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170 return KErrPermissionDenied; |
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171 } |
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172 // Check version |
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173 if (!Kern::QueryVersionSupported(RWebcameraDevice::VersionRequired(),aVer)) |
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174 { |
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175 return KErrNotSupported; |
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176 } |
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177 // Setup LDD for receiving client messages |
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178 SetDfcQ(Kern::DfcQue0()); |
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179 iMsgQ.Receive(); |
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180 // Associate DFCs with the same queue we set above to receive client messages on |
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181 iReceiveDataDfc.SetDfcQ(iDfcQ); |
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182 iCaptureDfc.SetDfcQ(iDfcQ); |
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183 // Give PDD a pointer to this channel |
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184 Pdd()->iLdd=this; |
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185 |
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186 //allocate Memory |
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187 iSize=Kern::RoundToPageSize(BUFSIZE); |
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188 TInt rtn=Epoc::AllocPhysicalRam(iSize, iPhysAddr); |
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189 if (rtn != KErrNone) |
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190 { |
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191 return rtn; |
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192 } |
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193 rtn=DPlatChunkHw::New(iChunk, iPhysAddr, iSize,EMapAttrUserRw|EMapAttrBufferedC); |
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194 if (rtn != KErrNone) |
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195 { |
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196 if (iPhysAddr) |
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197 { |
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198 Epoc::FreePhysicalRam(iPhysAddr, iSize); |
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199 } |
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200 return rtn; |
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201 } |
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202 iLAdr = reinterpret_cast<TUint8*>(iChunk->LinearAddress()); |
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203 |
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204 iComm=HBuf8::New(BUFSIZE); |
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205 if (!iComm) |
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206 { |
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207 return KErrNotSupported; |
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208 } |
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209 iReceiveDataBuffer=iComm; |
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210 iCaptureBuffer=iComm; |
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211 |
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212 DP("DWebcameraLogicalChannel::DoCreate() end"); |
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213 return KErrNone; |
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214 } |
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215 |
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216 /** |
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217 Process a message for this logical channel. |
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218 This function is called in the context of a DFC thread. |
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219 |
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220 @param aMessage The message to process. |
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221 The iValue member of this distinguishes the message type: |
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222 iValue==ECloseMsg, channel close message |
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223 iValue==KMaxTInt, a 'DoCancel' message |
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224 iValue>=0, a 'DoControl' message with function number equal to iValue |
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225 iValue<0, a 'DoRequest' message with function number equal to ~iValue |
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226 */ |
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227 void DWebcameraLogicalChannel::HandleMsg(TMessageBase* aMsg) |
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228 { |
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229 DP("DWebcameraLogicalChannel::HandleMsg() start"); |
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230 TThreadMessage& m=*(TThreadMessage*)aMsg; |
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231 |
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232 // Get message type |
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233 TInt id=m.iValue; |
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234 DP("id=%d",id); |
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235 |
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236 // Decode the message type and dispatch it to the relevent handler function... |
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237 if (id==(TInt)ECloseMsg) |
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238 { |
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239 DoCancel(RWebcameraDevice::EAllRequests); |
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240 m.Complete(KErrNone, EFalse); |
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241 return; |
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242 } |
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243 |
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244 if(m.Client()!=iClient) |
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245 { |
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246 Kern::ThreadKill(m.Client(), |
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247 EExitPanic, |
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248 ERequestFromWrongThread, |
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249 KDriver1PanicCategory); |
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250 m.Complete(KErrNone,ETrue); |
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251 return; |
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252 } |
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253 |
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254 if (id==KMaxTInt) |
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255 { |
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256 DoCancel(m.Int0()); |
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257 m.Complete(KErrNone,ETrue); |
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258 return; |
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259 } |
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260 |
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261 if (id<0) |
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262 { |
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263 // DoRequest |
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264 TRequestStatus* pS=(TRequestStatus*)m.Ptr0(); |
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265 TInt rtn =DoRequest(~id,pS,m.Ptr1(),aMsg); |
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266 |
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267 if (rtn != KErrNone) |
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268 Kern::RequestComplete(iClient,pS,rtn); |
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269 m.Complete(KErrNone,ETrue); |
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270 } |
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271 else |
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272 { |
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273 // DoControl |
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274 TInt rtn = DoControl(id,m.Ptr0(),aMsg); |
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275 m.Complete(rtn,ETrue); |
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276 } |
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277 DP("DWebcameraLogicalChannel::HandleMsg() end"); |
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278 } |
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279 |
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280 /** |
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281 Process synchronous 'control' requests |
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282 */ |
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283 TInt DWebcameraLogicalChannel::DoControl(TInt aFunction, TAny* a1, TAny* a2) |
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284 { |
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285 DP("DWebcameraLogicalChannel::DoControl() start"); |
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286 TInt rtn; |
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287 TThreadMessage& m=*(TThreadMessage*)a2; |
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288 TRequestStatus* pS=(TRequestStatus*)m.Ptr0(); |
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289 |
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290 switch (aFunction) |
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291 { |
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292 case RWebcameraDevice::EGetConfig: |
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293 // rtn = GetConfig((TDes8*)a1); |
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294 rtn = KErrNone; |
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295 if ( rtn != KErrNone ) |
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296 { |
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297 Kern::RequestComplete(iClient,pS,rtn); |
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298 } |
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299 break; |
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300 case RWebcameraDevice::ESetConfig: |
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301 // rtn = SetConfig((const TDesC8*)a1); |
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302 break; |
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303 |
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304 default: |
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305 rtn = KErrNotSupported; |
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306 Kern::RequestComplete(iClient,pS,rtn); |
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307 break; |
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308 } |
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309 DP("DWebcameraLogicalChannel::DoControl() end"); |
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310 return rtn; |
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311 |
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312 } |
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313 |
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314 /** |
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315 Process asynchronous requests. |
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316 */ |
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317 TInt DWebcameraLogicalChannel::DoRequest(TInt aReqNo, |
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318 TRequestStatus* aStatus, |
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319 TAny* a1, |
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320 TAny* a2) |
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321 { |
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322 DP("DWebcameraLogicalChannel::DoRequest() start"); |
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323 TInt rtn; |
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324 TThreadMessage& m=*(TThreadMessage*)a2; |
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325 |
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326 iRequesting =ETrue; |
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327 rtn = KErrNone; |
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328 DP("aReqNo=%d",aReqNo); |
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329 switch(aReqNo) |
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330 { |
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331 case RWebcameraDevice::EStart: |
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332 DP("EStart=%d",RWebcameraDevice::EStart); |
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333 iReceiveDataStatus = aStatus; |
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334 iReceiving = ETrue ; |
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335 iReceiveDataBuffer->FillZ(iCaptureBuffer->MaxLength()); |
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336 iReceiveDataBuffer->Zero(); |
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337 DP("iReceiveDataBuffer Len=%d",iReceiveDataBuffer->MaxLength()); |
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338 DP("iReceiveDataBuffer Len=%d",iReceiveDataBuffer->Length()); |
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339 rtn = Pdd()->StartViewerFinder(iPhysAddr,iSize); |
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340 if ( rtn != KErrNone ) |
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341 { |
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342 DP("rtn=%d",rtn); |
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343 iReceiving = EFalse ; |
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344 Kern::RequestComplete(iClient,aStatus,rtn); |
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345 } |
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346 else |
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347 { |
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348 DP("rtn=%d",rtn); |
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349 // Example Platform Security capability check which tests the |
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350 // client for ECapability_None (which always passes)... |
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351 if ( iRequesting == EFalse ) |
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352 { |
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353 DP("iRequesting=EFalse"); |
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354 iReceiving = EFalse ; |
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355 Kern::RequestComplete(iClient, |
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356 iReceiveDataStatus, |
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357 iReceiveDataResult); |
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358 } |
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359 else |
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360 { |
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361 DP("iRequesting=ETrue"); |
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362 iReceiveDataDescriptor=(TDes8*)a1; |
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363 } |
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364 } |
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365 break; |
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366 case RWebcameraDevice::ECapture: |
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367 iCaptureing = ETrue ; |
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368 iCaptureStatus = aStatus; |
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369 iCaptureBuffer->FillZ(iCaptureBuffer->MaxLength()); |
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370 iCaptureBuffer->Zero(); |
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371 DP("iCaptureBuffer Len=%d",iCaptureBuffer->MaxLength()); |
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372 DP("iCaptureBuffer Len=%d",iCaptureBuffer->Length()); |
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373 rtn = Pdd()->StartCapture(iPhysAddr,iSize); |
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374 DP("rtn=%d",rtn); |
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375 if ( rtn != KErrNone ) |
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376 { |
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377 iCaptureing = EFalse ; |
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378 Kern::RequestComplete(iClient,aStatus,rtn); |
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379 } |
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380 else |
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381 { |
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382 if ( iRequesting == EFalse ) |
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383 { |
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384 DP("iRequesting=EFalse"); |
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385 iReceiving = EFalse ; |
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386 Kern::RequestComplete(iClient,iCaptureStatus,iCaptureResult); |
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387 } |
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388 else |
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389 { |
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390 DP("Capture iRequesting=ETrue"); |
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391 iCaptureDescriptor=(TDes8*)a1; |
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392 } |
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393 } |
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394 break; |
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395 default: |
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396 rtn=KErrNotSupported; |
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397 Kern::RequestComplete(iClient,aStatus,rtn); |
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398 break; |
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399 } |
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400 iRequesting = EFalse; |
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401 |
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402 DP("DWebcameraLogicalChannel::DoRequest() end"); |
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403 return rtn; |
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404 |
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405 } |
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406 |
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407 /** |
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408 Process cancelling of asynchronous requests. |
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409 */ |
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410 void DWebcameraLogicalChannel::DoCancel(TUint aMask) |
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411 { |
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412 DP("DWebcameraLogicalChannel::DoCancel() start"); |
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413 TInt rtn; |
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414 DP("aMask=%d",aMask); |
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415 if (aMask&(1<<RWebcameraDevice::EStart)) |
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416 { |
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417 DP("RWebcameraDevice::EStart=%d",RWebcameraDevice::EStart); |
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418 if (iReceiveDataStatus) |
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419 { |
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420 DP("iReceiveDataStatus=%d",iReceiveDataStatus); |
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421 Pdd()->Stop(DWebcameraDriverBase::USB_cancel); |
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422 iReceiving = EFalse ; |
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423 iReceiveDataDfc.Cancel(); |
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424 Kern::RequestComplete(iClient,iReceiveDataStatus,KErrCancel); |
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425 } |
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426 } |
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427 if (aMask&(1<<RWebcameraDevice::ECapture)) |
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428 { |
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429 DP("RWebcameraDevice::ECapture=%d",RWebcameraDevice::ECapture); |
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430 if (iCaptureStatus) |
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431 { |
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432 Pdd()->Stop(DWebcameraDriverBase::USB_cancel); |
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433 iReceiving = EFalse ; |
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434 iCaptureDfc.Cancel(); |
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435 Kern::RequestComplete(iClient,iCaptureStatus,KErrCancel); |
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436 } |
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437 } |
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438 DP("DWebcameraLogicalChannel::DoCancel() end"); |
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439 } |
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440 |
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441 /** |
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442 Called by PDD from ISR to indicate that a ReceiveData operation has completed. |
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443 */ |
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444 void DWebcameraLogicalChannel::GetOneFlameComplete(TInt aDataSize) |
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445 { |
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446 DP("DWebcameraLogicalChannel::GetOneFlameComplete() start"); |
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447 DP("datasize=%d",aDataSize); |
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448 iSaveSize=iSize - aDataSize; |
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449 // Queue DFC |
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450 iReceiveDataDfc.Add(); |
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451 //set size of received data |
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452 if (iSaveSize > 0) |
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453 { |
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454 iReceiveDataResult = KErrNone; |
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455 } |
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456 else |
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457 { |
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458 iReceiveDataResult = KErrUnknown;//TODO:define of error |
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459 } |
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460 DP("DWebcameraLogicalChannel::GetOneFlameComplete() end"); |
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461 } |
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462 |
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463 /** |
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464 Called by PDD from ISR to indicate that a get capture image operation has completed. |
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465 */ |
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466 void DWebcameraLogicalChannel::CaptureComplete(TInt aDataSize) |
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467 { |
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468 DP("DWebcameraLogicalChannel::CaptureComplete() start"); |
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469 DP("datasize=%d",aDataSize); |
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470 iSaveSize=iSize - aDataSize; |
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471 // Queue DFC |
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472 iCaptureDfc.Add(); |
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473 //set size of received data |
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474 if (iSaveSize > 0) |
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475 { |
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476 iCaptureResult = KErrNone; |
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477 } |
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478 else |
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479 { |
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480 iCaptureResult = KErrUnknown;//TODO:define of error |
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481 } |
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482 DP("DWebcameraLogicalChannel::CaptureComplete() end"); |
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483 } |
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484 |
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485 /** |
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486 DFC Callback which gets triggered after the PDD has signalled that getting oneflame completed. |
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487 This just casts aPtr and calls DoGetOneFlameComplete(). |
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488 */ |
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489 void DWebcameraLogicalChannel::GetOneFlameDfc(TAny* aPtr) |
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490 { |
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491 DP("DWebcameraLogicalChannel::GetOneFlameDfc() start"); |
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492 ((DWebcameraLogicalChannel*)aPtr)->DoGetOneFlameComplete(); |
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493 DP("DWebcameraLogicalChannel::GetOneFlameDfc() end"); |
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494 } |
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495 |
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496 /** |
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497 DFC Callback which gets triggered after the PDD has signalled that getting Capture image completed. |
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498 This just casts aPtr and calls DoCaptureComplete(). |
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499 */ |
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500 void DWebcameraLogicalChannel::CaptureDfc(TAny* aPtr) |
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501 { |
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502 DP("DWebcameraLogicalChannel::CaptureDfc() start"); |
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503 ((DWebcameraLogicalChannel*)aPtr)->DoCaptureComplete(); |
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504 DP("DWebcameraLogicalChannel::CaptureDfc() end"); |
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505 } |
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506 |
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507 /** |
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508 Called from a DFC after the PDD has signalled that getting oneflame completed. |
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509 */ |
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510 void DWebcameraLogicalChannel::DoGetOneFlameComplete() |
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511 { |
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512 DP("DWebcameraLogicalChannel::DoGetOneFlameComplete() start"); |
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513 iReceiveDataBuffer->Copy(iLAdr,iSaveSize); |
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514 DP("iReceiveDataBuffer Len=%d",iReceiveDataBuffer->Length()); |
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515 // Write data to client from our buffer |
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516 TInt result=Kern::ThreadDesWrite(iClient,iReceiveDataDescriptor,*iReceiveDataBuffer,0); |
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517 // Finished with client descriptor, so NULL it to help detect coding errors |
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518 iReceiveDataDescriptor = NULL; |
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519 |
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520 // Use result code from PDD if it was an error |
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521 if(iReceiveDataResult!=KErrNone) |
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522 result = iReceiveDataResult; |
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523 |
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524 // Complete clients request |
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525 Kern::RequestComplete(iClient,iReceiveDataStatus,result); |
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526 DP("DWebcameraLogicalChannel::DoGetOneFlameComplete() end"); |
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527 } |
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528 |
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529 /** |
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530 Called from a DFC after the PDD has signalled that getting Capture image completed. |
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531 */ |
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532 void DWebcameraLogicalChannel::DoCaptureComplete() |
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533 { |
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534 DP("DWebcameraLogicalChannel::DoCaptureComplete() start"); |
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535 iCaptureBuffer->Copy(iLAdr,iSaveSize); |
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536 DP("iCaptureBuffer Len=%d",iCaptureBuffer->Length()); |
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537 // Write data to client from our buffer |
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538 TInt result=Kern::ThreadDesWrite(iClient,iCaptureDescriptor,*iCaptureBuffer,0); |
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539 // Finished with client descriptor, so NULL it to help detect coding errors |
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540 iCaptureDescriptor = NULL; |
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541 |
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542 // Use result code from PDD if it was an error |
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543 if(iCaptureResult!=KErrNone) |
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544 result = iCaptureResult; |
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545 |
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546 // Complete clients request |
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547 Kern::RequestComplete(iClient,iCaptureStatus,result); |
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548 DP("DWebcameraLogicalChannel::DoCaptureComplete() end"); |
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549 } |
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550 |
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551 /** |
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552 Process a GetConfig control message. This writes the current driver configuration to a |
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553 RWebcameraDevice::TConfigBuf supplied by the client. |
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554 */ |
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555 TInt DWebcameraLogicalChannel::GetConfig(TDes8* aConfigBuf) |
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556 { |
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557 //unsupported |
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558 } |
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559 |
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560 /** |
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561 Process a SetConfig control message. This sets the driver configuration using a |
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562 RWebcameraDevice::TConfigBuf supplied by the client. |
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563 */ |
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564 TInt DWebcameraLogicalChannel::SetConfig(const TDesC8* aConfigBuf) |
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565 { |
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566 //unsupported |
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567 } |
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568 |
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569 /** |
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570 Fill a TConfig with the drivers current configuration. |
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571 */ |
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572 /*void DWebcameraLogicalChannel::CurrentConfig(RWebcameraDevice::TConfig& aConfig) |
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573 { |
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574 //unsupported |
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575 } |
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576 */ |
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577 |
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578 /** |
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579 *Get the point to Physical channel. |
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580 */ |
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581 DWebcameraDriverBase* DWebcameraLogicalChannel::Pdd() |
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582 { |
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583 DP("DWebcameraLogicalChannel::Pdd() start"); |
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584 return (DWebcameraDriverBase*)iPdd; |
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585 } |
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586 |