Mercurial > hg > ucis.core
annotate USBLib/Descriptor/UsbDescriptor.cs @ 96:94df2951d118
USBLib: fix USB string descriptor retrieval
| author | Ivo Smits <Ivo@UCIS.nl> |
|---|---|
| date | Thu, 26 Jun 2014 21:04:20 +0200 |
| parents | e811297f5aa4 |
| children |
| rev | line source |
|---|---|
| 21 | 1 ???using System; |
| 22 | 2 using System.Runtime.InteropServices; |
| 21 | 3 using System.Text; |
| 4 using UCIS.USBLib.Communication; | |
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5 using UCIS.Util; |
| 21 | 6 |
| 7 namespace UCIS.USBLib.Descriptor { | |
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8 public struct UsbDescriptorBlob { |
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9 public UsbDescriptorBlob(ArraySegment<Byte> data) : this() { this.Data = data; } |
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10 public UsbDescriptorBlob(Byte[] data) : this() { this.Data = new ArraySegment<byte>(data); } |
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11 public UsbDescriptorBlob(Byte[] data, int offset) : this() { this.Data = new ArraySegment<byte>(data, offset, data[offset + 0]); } |
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12 public ArraySegment<Byte> Data { get; private set; } |
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13 public Byte Length { get { return Data.Array[Data.Offset + 0]; } } |
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14 public UsbDescriptorType Type { get { return (UsbDescriptorType)Data.Array[Data.Offset + 1]; } } |
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15 public Byte[] GetBytes() { return ArrayUtil.ToArray(Data); } |
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16 public static explicit operator UsbDescriptor(UsbDescriptorBlob self) { return UsbDescriptor.FromByteArray(self.Data.Array, self.Data.Offset, self.Data.Count); } |
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17 public static explicit operator UsbDeviceDescriptor(UsbDescriptorBlob self) { return UsbDeviceDescriptor.FromByteArray(self.Data.Array, self.Data.Offset, self.Data.Count); } |
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18 public static explicit operator UsbConfigurationDescriptor(UsbDescriptorBlob self) { return UsbConfigurationDescriptor.FromByteArray(self.Data.Array, self.Data.Offset, self.Data.Count); } |
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19 public static explicit operator UsbInterfaceDescriptor(UsbDescriptorBlob self) { return UsbInterfaceDescriptor.FromByteArray(self.Data.Array, self.Data.Offset, self.Data.Count); } |
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20 public static explicit operator UsbEndpointDescriptor(UsbDescriptorBlob self) { return UsbEndpointDescriptor.FromByteArray(self.Data.Array, self.Data.Offset, self.Data.Count); } |
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21 public static explicit operator UsbHidDescriptor(UsbDescriptorBlob self) { return UsbHidDescriptor.FromByteArray(self.Data.Array, self.Data.Offset, self.Data.Count); } |
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22 public static explicit operator UsbHubDescriptor(UsbDescriptorBlob self) { return UsbHubDescriptor.FromByteArray(self.Data.Array, self.Data.Offset, self.Data.Count); } |
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23 } |
| 21 | 24 [StructLayout(LayoutKind.Sequential, Pack = 1)] |
| 25 public struct UsbDescriptor { | |
| 26 byte bmLength; | |
| 27 byte bType; | |
| 28 public Byte Length { get { return bmLength; } } | |
| 29 public UsbDescriptorType Type { get { return (UsbDescriptorType)bType; } } | |
| 30 internal static short FromLittleEndian(short value) { | |
| 31 if (BitConverter.IsLittleEndian) return value; | |
| 32 return (short)(((value & 0xFF) << 8) | ((value >> 8) & 0xFF)); | |
| 33 } | |
| 34 public unsafe static UsbDescriptor FromByteArray(Byte[] buffer, int offset, int length) { | |
| 35 if (length < Marshal.SizeOf(typeof(UsbDescriptor))) throw new ArgumentOutOfRangeException("length", "The data length is smaller than the descriptor length"); | |
| 36 if (offset < 0 || length < 0 || offset + length > buffer.Length) throw new ArgumentOutOfRangeException("length", "The specified offset and length exceed the buffer dimensions"); | |
| 37 fixed (Byte* ptr = buffer) return *(UsbDescriptor*)(ptr + offset); | |
| 38 } | |
| 39 } | |
| 40 [StructLayout(LayoutKind.Sequential, Pack = 1)] | |
| 41 public struct UsbStringDescriptor { | |
| 42 public static String GetString(Byte[] buffer, int offset, int length) { | |
| 43 if (length < 2) throw new ArgumentOutOfRangeException("length", "The data length is smaller than the descriptor length"); | |
| 44 if (offset < 0 || length < 0 || offset + length > buffer.Length) throw new ArgumentOutOfRangeException("length", "The specified offset and length exceed the buffer dimensions"); | |
| 45 if (buffer[offset + 1] != (Byte)UsbDescriptorType.String) throw new InvalidOperationException("The descriptor is not a string descriptor"); | |
| 46 int slen = buffer[offset]; | |
| 47 if (slen > length) throw new InvalidOperationException("The string has been truncated"); | |
| 48 return Encoding.Unicode.GetString(buffer, offset + 2, slen - 2); | |
| 49 } | |
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50 public static String GetStringFromDevice(IUsbInterface device, byte index, short langId) { |
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51 Byte[] buff = new Byte[255]; |
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52 int len = device.GetDescriptor((Byte)UsbDescriptorType.String, index, langId, buff, 0, buff.Length); |
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53 if (len == 0) return null; |
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54 return GetString(buff, 0, len); |
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55 } |
| 21 | 56 } |
| 57 [StructLayout(LayoutKind.Sequential, Pack = 1)] | |
| 58 public struct UsbDeviceDescriptor { | |
| 59 byte bmLength; | |
| 60 byte bType; | |
| 61 short bcdUSB; | |
| 62 byte bDeviceClass; | |
| 63 byte bDeviceSubClass; | |
| 64 byte bDeviceProtocol; | |
| 65 byte bMaxControlPacketSize; | |
| 66 short idVendor; | |
| 67 short idProduct; | |
| 68 short bcdDevice; | |
| 69 byte iManufacturer; | |
| 70 byte iProduct; | |
| 71 byte iSerialNumber; | |
| 72 byte numConfigurations; | |
| 73 public Byte Length { get { return bmLength; } } | |
| 74 public UsbDescriptorType Type { get { return (UsbDescriptorType)bType; }} | |
| 75 public short USBVersion { get { return UsbDescriptor.FromLittleEndian(bcdUSB); } } | |
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76 public UsbClassCode DeviceClass { get { return (UsbClassCode)bDeviceClass; } } |
| 21 | 77 public Byte DeviceSubClass { get { return bDeviceSubClass; } } |
| 78 public Byte DeviceProtocol { get { return bDeviceProtocol; } } | |
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79 public UInt16 DeviceVersion { get { return (UInt16)UsbDescriptor.FromLittleEndian(bcdDevice); } } |
| 21 | 80 public Byte MaxControlPacketSize { get { return bMaxControlPacketSize; } } |
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81 public UInt16 VendorID { get { return (UInt16)UsbDescriptor.FromLittleEndian(idVendor); } } |
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82 public UInt16 ProductID { get { return (UInt16)UsbDescriptor.FromLittleEndian(idProduct); } } |
| 21 | 83 public Byte ManufacturerStringID { get { return iManufacturer; } } |
| 84 public Byte ProductStringID { get { return iProduct; } } | |
| 85 public Byte SerialNumberStringID { get { return iSerialNumber; } } | |
| 86 public Byte NumConfigurations { get { return numConfigurations; } } | |
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87 public unsafe Byte[] GetBytes() { |
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88 Byte[] buffer = new Byte[Size]; |
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89 fixed (Byte* ptr = buffer) *(UsbDeviceDescriptor*)ptr = this; |
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90 return buffer; |
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91 } |
| 21 | 92 public unsafe static UsbDeviceDescriptor FromByteArray(Byte[] buffer, int offset, int length) { |
| 93 if (length < Size) throw new ArgumentOutOfRangeException("length", "The data length is smaller than the descriptor length"); | |
| 94 if (offset < 0 || length < 0 || offset + length > buffer.Length) throw new ArgumentOutOfRangeException("length", "The specified offset and length exceed the buffer dimensions"); | |
| 95 fixed (Byte* ptr = buffer) return *(UsbDeviceDescriptor*)(ptr + offset); | |
| 96 } | |
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97 public static UsbDeviceDescriptor FromDevice(IUsbInterface device) { |
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98 Byte[] buff = new Byte[Size]; |
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99 int len = device.GetDescriptor((Byte)UsbDescriptorType.Device, 0, 0, buff, 0, buff.Length); |
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100 if (len == 0) return new UsbDeviceDescriptor(); |
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101 return FromByteArray(buff, 0, len); |
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102 } |
| 21 | 103 public static unsafe int Size { get { return sizeof(UsbDeviceDescriptor); } } |
| 104 } | |
| 105 [StructLayout(LayoutKind.Sequential, Pack = 1)] | |
| 106 public struct UsbConfigurationDescriptor { | |
| 107 byte bmLength; | |
| 108 byte bType; | |
| 109 short wTotalLength; | |
| 110 byte bNumInterfaces; | |
| 111 byte bConfigurationValue; | |
| 112 byte bConfigurationStringID; | |
| 113 byte bmAttributes; | |
| 114 byte bMaxPower; | |
| 115 public Byte Length { get { return bmLength; } } | |
| 116 public UsbDescriptorType Type { get { return (UsbDescriptorType)bType; } } | |
| 117 public short TotalLength { get { return UsbDescriptor.FromLittleEndian(wTotalLength); } } | |
| 118 public Byte NumInterfaces { get { return bNumInterfaces; } } | |
| 119 public Byte ConfigurationValue { get { return bConfigurationValue; } } | |
| 120 public Byte ConfigurationStringID { get { return bConfigurationStringID; } } | |
| 121 public Boolean SelfPowered { get { return 0 != (bmAttributes & (1 << 6)); } } | |
| 122 public Boolean RemoteWakeup { get { return 0 != (bmAttributes & (1 << 5)); } } | |
| 123 public int MaxPowerMA { get { return bMaxPower * 2; } } | |
| 124 public unsafe static UsbConfigurationDescriptor FromByteArray(Byte[] buffer, int offset, int length) { | |
| 125 if (length < Size) throw new ArgumentOutOfRangeException("length", "The data length is smaller than the descriptor length"); | |
| 126 if (offset < 0 || length < 0 || offset + length > buffer.Length) throw new ArgumentOutOfRangeException("length", "The specified offset and length exceed the buffer dimensions"); | |
| 127 fixed (Byte* ptr = buffer) return *(UsbConfigurationDescriptor*)(ptr + offset); | |
| 128 } | |
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129 public static UsbConfigurationDescriptor FromDevice(IUsbInterface device, Byte index) { |
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130 Byte[] buff = new Byte[UsbConfigurationDescriptor.Size]; |
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131 int len = device.GetDescriptor((Byte)UsbDescriptorType.Configuration, index, 0, buff, 0, buff.Length); |
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132 if (len == 0) return new UsbConfigurationDescriptor(); |
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133 return FromByteArray(buff, 0, len); |
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134 } |
| 21 | 135 public static unsafe int Size { get { return sizeof(UsbConfigurationDescriptor); } } |
| 136 } | |
| 137 [StructLayout(LayoutKind.Sequential, Pack = 1)] | |
| 138 public struct UsbInterfaceDescriptor { | |
| 139 byte bmLength; | |
| 140 byte bType; | |
| 141 byte bInterfaceNumber; | |
| 142 byte bAlternateSetting; | |
| 143 byte bNumEndpoints; | |
| 144 byte bInterfaceClass; | |
| 145 byte bInterfaceSubClass; | |
| 146 byte bInterfaceProtocol; | |
| 147 byte bInterfaceStringID; | |
| 148 public Byte Length { get { return bmLength; } } | |
| 149 public UsbDescriptorType Type { get { return (UsbDescriptorType)bType; } } | |
| 150 public Byte InterfaceNumber { get { return bInterfaceNumber; } } | |
| 151 public Byte AlternateSetting { get { return bAlternateSetting; } } | |
| 152 public Byte NumEndpoints { get { return bNumEndpoints; } } | |
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153 public UsbClassCode InterfaceClass { get { return (UsbClassCode)bInterfaceClass; } } |
| 21 | 154 public Byte InterfaceSubClass { get { return bInterfaceSubClass; } } |
| 155 public Byte InterfaceProtocol { get { return bInterfaceProtocol; } } | |
| 156 public Byte InterfaceStringID { get { return bInterfaceStringID; } } | |
| 157 public unsafe static UsbInterfaceDescriptor FromByteArray(Byte[] buffer, int offset, int length) { | |
| 158 if (length < Size) throw new ArgumentOutOfRangeException("length", "The data length is smaller than the descriptor length"); | |
| 159 if (offset < 0 || length < 0 || offset + length > buffer.Length) throw new ArgumentOutOfRangeException("length", "The specified offset and length exceed the buffer dimensions"); | |
| 160 fixed (Byte* ptr = buffer) return *(UsbInterfaceDescriptor*)(ptr + offset); | |
| 161 } | |
| 162 public static unsafe int Size { get { return sizeof(UsbInterfaceDescriptor); } } | |
| 163 } | |
| 164 [StructLayout(LayoutKind.Sequential, Pack = 1)] | |
| 165 public struct UsbEndpointDescriptor { | |
| 166 byte bmLength; | |
| 167 byte bType; | |
| 168 byte bEndpointAddress; | |
| 169 Byte bmAttributes; | |
| 170 short wMaxPacketSize; | |
| 171 byte bInterval; | |
| 172 public Byte Length { get { return bmLength; } } | |
| 173 public UsbDescriptorType Type { get { return (UsbDescriptorType)bType; } } | |
| 174 public Byte EndpointAddress { get { return bEndpointAddress; } } | |
| 175 public Boolean IsInput { get { return 0 != (EndpointAddress & (1 << 7)); } } | |
| 176 public int EndpointNumber { get { return EndpointAddress & 0xF; } } | |
| 177 public int TransferType { get { return bmAttributes & 3; } } | |
| 178 public Boolean IsControl { get { return TransferType == 0; } } | |
| 179 public Boolean IsIsochronous { get { return TransferType == 1; } } | |
| 180 public Boolean IsBulk { get { return TransferType == 2; } } | |
| 181 public Boolean IsInterrupt { get { return TransferType == 3; } } | |
| 182 public int MaxPacketSize { get { return UsbDescriptor.FromLittleEndian(wMaxPacketSize) & 0x7FF; } } | |
| 183 public Byte Interval { get { return bInterval; } } | |
| 184 public unsafe static UsbEndpointDescriptor FromByteArray(Byte[] buffer, int offset, int length) { | |
| 185 if (length < Size) throw new ArgumentOutOfRangeException("length", "The data length is smaller than the descriptor length"); | |
| 186 if (offset < 0 || length < 0 || offset + length > buffer.Length) throw new ArgumentOutOfRangeException("length", "The specified offset and length exceed the buffer dimensions"); | |
| 187 fixed (Byte* ptr = buffer) return *(UsbEndpointDescriptor*)(ptr + offset); | |
| 188 } | |
| 189 public static unsafe int Size { get { return sizeof(UsbEndpointDescriptor); } } | |
| 190 } | |
| 191 [StructLayout(LayoutKind.Sequential, Pack = 1)] | |
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192 public struct UsbHidDescriptor { |
| 21 | 193 byte bmLength; |
| 194 byte bType; | |
| 195 short bcdHID; | |
| 196 byte bCountryCode; | |
| 197 byte bNumDescriptors; | |
| 198 byte bDescriptorType; | |
| 199 short wDescriptorLength; | |
| 200 public Byte Length { get { return bmLength; } } | |
| 201 public UsbDescriptorType Type { get { return (UsbDescriptorType)bType; } } | |
| 202 public short HIDVersion { get { return UsbDescriptor.FromLittleEndian(bcdHID); } } | |
| 203 public Byte CountryCode { get { return bCountryCode; } } | |
| 204 public Byte NumDescriptors { get { return bNumDescriptors; } } | |
| 205 public UsbDescriptorType DescriptorType { get { return (UsbDescriptorType)bDescriptorType; } } | |
| 206 public short DescriptorLength { get { return UsbDescriptor.FromLittleEndian(wDescriptorLength); } } | |
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207 public unsafe static UsbHidDescriptor FromByteArray(Byte[] buffer, int offset, int length) { |
| 21 | 208 if (length < Size) throw new ArgumentOutOfRangeException("length", "The data length is smaller than the descriptor length"); |
| 209 if (offset < 0 || length < 0 || offset + length > buffer.Length) throw new ArgumentOutOfRangeException("length", "The specified offset and length exceed the buffer dimensions"); | |
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210 fixed (Byte* ptr = buffer) return *(UsbHidDescriptor*)(ptr + offset); |
| 21 | 211 } |
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212 public static unsafe int Size { get { return sizeof(UsbHidDescriptor); } } |
| 21 | 213 } |
| 214 [StructLayout(LayoutKind.Sequential, Pack = 1)] | |
| 215 public struct UsbHubDescriptor { | |
| 216 byte bmLength; | |
| 217 byte bType; | |
| 218 byte bNumPorts; | |
| 219 short wHubCharacteristics; | |
| 220 byte bPwrOn2PwrGood; //2ms intervals | |
| 221 byte bHubControllerCurrent; | |
| 222 public Byte Length { get { return bmLength; } } | |
| 223 public UsbDescriptorType Type { get { return (UsbDescriptorType)bType; } } | |
| 224 public Byte NumPorts { get { return bNumPorts; } } | |
| 225 public Boolean IsCompoundDevice { get { return 0 != (wHubCharacteristics & (1 << 2)); } } | |
| 226 public Byte HubControllerCurrent { get { return bHubControllerCurrent; } } | |
| 227 public unsafe static UsbHubDescriptor FromByteArray(Byte[] buffer, int offset, int length) { | |
| 228 if (length < Marshal.SizeOf(typeof(UsbHubDescriptor))) throw new ArgumentOutOfRangeException("length", "The data length is smaller than the descriptor length"); | |
| 229 if (offset < 0 || length < 0 || offset + length > buffer.Length) throw new ArgumentOutOfRangeException("length", "The specified offset and length exceed the buffer dimensions"); | |
| 230 fixed (Byte* ptr = buffer) return *(UsbHubDescriptor*)(ptr + offset); | |
| 231 } | |
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232 public static unsafe int Size { get { return sizeof(UsbHubDescriptor); } } |
| 21 | 233 } |
| 234 } |