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1 /* |
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2 * Copyright (c) 2005 Nokia Corporation and/or its subsidiary(-ies). |
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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 "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 * |
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14 * Description: |
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15 * |
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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 #ifndef CMCEVIDEOSDPCODEC_H |
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22 #define CMCEVIDEOSDPCODEC_H |
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23 |
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24 #include "mcemediasdpcodec.h" |
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25 |
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26 class CMceComVideoCodec; |
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27 class CMceComVideoStream; |
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28 |
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29 #define MCE_SDP_STRING_VIDEOL()\ |
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30 SdpCodecStringPool::StringPoolL().StringF( \ |
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31 SdpCodecStringConstants::EMediaVideo,\ |
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32 SdpCodecStringPool::StringTableL() ) |
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33 |
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34 |
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35 |
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36 |
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37 /** |
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38 * |
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39 * |
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40 * @lib |
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41 */ |
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42 class CMceVideoSdpCodec : public CMceMediaSdpCodec |
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43 { |
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44 |
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45 public://constructor and destructor |
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46 |
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47 /** |
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48 * Constructor |
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49 */ |
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50 static CMceVideoSdpCodec* NewL(); |
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51 |
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52 /** |
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53 * Destructor |
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54 */ |
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55 ~CMceVideoSdpCodec(); |
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56 |
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57 |
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58 public: //from CMceSdpCodec |
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59 |
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60 /** |
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61 * Returns ETrue, if media is encoded by this codec |
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62 * @return ETrue, if media is encoded by this codec |
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63 */ |
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64 TBool Encodes( const CMceComMediaStream& aStream ) const; |
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65 |
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66 |
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67 public: //from CMceMediaSdpCodec |
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68 |
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69 |
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70 /** |
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71 * Returns codecs |
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72 * @param aStream media stream |
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73 * @param return codecs |
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74 * @leave if stream type does not macth codecs |
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75 */ |
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76 const RPointerArray<CMceComCodec>& CodecsL( CMceComMediaStream& aStream ) const; |
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77 |
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78 /** |
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79 * Encodes rtpmap -attribute |
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80 * @param aCodec codec encoded to rtpmap |
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81 * @leave system wide error |
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82 */ |
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83 CSdpFmtAttributeField* EncodeRtpmapAttributeLC( CMceComCodec& aCodec ) const; |
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84 |
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85 /** |
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86 * Encodes media related attributes |
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87 * @param aCodec the codec |
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88 * @param aMediaLine media line |
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89 * @param aRtpmap rtpmap attribute |
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90 * @leave system wide error |
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91 */ |
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92 void EncodeMediaAttributesL( CMceComCodec& aCodec, |
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93 CSdpMediaField& aMediaLine, |
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94 CSdpFmtAttributeField& aRtpmap ) const; |
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95 |
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96 /** |
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97 * Decodes media related attributes |
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98 * @param aMediaLine media line |
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99 * @param aCodec the codec |
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100 * @leave system wide error |
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101 */ |
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102 |
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103 void DecodeMediaAttributesL( CSdpMediaField& aMediaLine, |
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104 CMceComCodec& aCodec, |
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105 CSdpFmtAttributeField& aRtpmap ) const; |
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106 |
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107 /** |
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108 * Creates media stream based on sdp type |
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109 * @param aType the sdp type sendrecv, sendonly or receive only |
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110 * @return media stream |
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111 * @leave system wide error |
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112 */ |
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113 CMceComMediaStream* CreateStreamLC( TInt aType ) const; |
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114 |
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115 /** |
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116 * Updates media based on received offer |
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117 * @param aStream media stream |
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118 * @param aDirection the direction |
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119 * @leave system wide error |
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120 */ |
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121 void UpdateStreamL( CMceComMediaStream& aStream, TInt aDirection ) const; |
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122 |
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123 /** |
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124 * Creates codec based on rtpmap line |
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125 * @param aRtpmap rtpmap line |
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126 * @return codec or NULL, if not supported |
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127 * @leave system wide error |
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128 */ |
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129 CMceComCodec* CreateCodecLC( CSdpFmtAttributeField& aRtpmap ) const; |
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130 |
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131 /** |
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132 * Creates codec based on payload type |
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133 * @param aPayload payload |
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134 * @param aMediaLine media line |
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135 * @return codec or NULL, if not supported |
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136 * @leave system wide error |
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137 */ |
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138 CMceComCodec* CreateCodecLC( TUint aPayload, CSdpMediaField& aMediaLine ) const; |
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139 |
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140 /** |
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141 * Decodes session level media attributes |
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142 * @param aStream media stream |
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143 * @param aSdpDocument sdp document |
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144 * @return codec or NULL, if not supported |
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145 * @leave system wide error |
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146 */ |
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147 void DecodeSessionMediaAttributesL( CMceComMediaStream& aStream, |
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148 CSdpDocument& aSdpDocument ) const; |
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149 |
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150 private: |
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151 |
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152 |
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153 /** |
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154 * C++ Constructor |
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155 * @param aMedia media |
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156 */ |
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157 CMceVideoSdpCodec( RStringF aMedia ); |
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158 |
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159 /** |
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160 * 2nd phase constructor |
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161 */ |
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162 void ConstructL(); |
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163 |
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164 |
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165 /** |
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166 * Encodes framerate attribute |
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167 * @param aCodec the codec |
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168 * @param aMediaLine media line |
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169 * @param aRtpmap rtpmap attribute |
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170 * @leave system wide error |
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171 */ |
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172 void EncodeFrameRateAttributeL( CMceComVideoCodec& aCodec, |
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173 CSdpMediaField& aMedia, |
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174 CSdpFmtAttributeField& aFmtpline ) const; |
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175 |
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176 /** |
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177 * Encodes framesize attribute |
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178 * @param aCodec the codec |
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179 * @param aMediaLine media line |
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180 * @param aRtpmap rtpmap attribute |
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181 * @leave system wide error |
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182 */ |
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183 void EncodeFrameSizeAttributeL( CMceComVideoCodec& aCodec, |
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184 CSdpMediaField& aMedia, |
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185 CSdpFmtAttributeField& aFmtpline ) const; |
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186 |
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187 |
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188 /** |
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189 * Creates uplink video stream with camera and rtp sink |
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190 * @return uplink video stream |
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191 */ |
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192 CMceComVideoStream* CreateUplinkStreamL() const; |
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193 |
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194 /** |
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195 * Creates downlink video stream with rtp source and display |
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196 * @return downlink video stream |
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197 */ |
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198 CMceComVideoStream* CreateDownlinkStreamL() const; |
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199 |
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200 |
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201 |
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202 private: |
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203 |
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204 RStringF iFrameSizeAttr; |
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205 |
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206 |
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207 }; |
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208 |
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209 |
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210 |
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211 #endif //CMCEVIDEOSDPCODEC_H |