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Much faster attribute range lookup - look through short list of attributes and compare to range, rather than looking up by each possible value within the range.

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Cleanups to SDP code. Add missing RFCOMM language base ID offset attribute. Fix incorrect definition of the SWAPENDIAN_32() macro.
pull/1469/head
Dean Camera 15 years ago
parent cb52e4371e
commit 3f3fdb01a9
3 changed files with 71 additions and 54 deletions
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30
Demos/Host/Incomplete/BluetoothHost/Lib/SDPServices.c
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@ -55,12 +55,12 @@ const struct
{
uint8_t Header;
uint8_t Size;
Item16Bit_t VersionList[];
} PROGMEM SDP_Attribute_Version =
Item16Bit_t OffsetList[];
} PROGMEM SDP_Attribute_LangOffset =
{
.Header = (SDP_DATATYPE_Sequence | SDP_DATASIZE_Variable8Bit),
.Size = (sizeof(Item16Bit_t) * 1),
.VersionList =
.OffsetList =
{
{.Header = (SDP_DATATYPE_UnsignedInt | SDP_DATASIZE_16Bit), .Value = SWAPENDIAN_16(0x0100)}
}
@ -70,12 +70,12 @@ const struct
{
uint8_t Header;
uint8_t Size;
Item16Bit_t OffsetList[];
} PROGMEM SDP_Attribute_LangOffset =
Item16Bit_t VersionList[];
} PROGMEM SDP_Attribute_Version =
{
.Header = (SDP_DATATYPE_Sequence | SDP_DATASIZE_Variable8Bit),
.Size = (sizeof(Item16Bit_t) * 1),
.OffsetList =
.VersionList =
{
{.Header = (SDP_DATATYPE_UnsignedInt | SDP_DATASIZE_16Bit), .Value = SWAPENDIAN_16(0x0100)}
}
@ -110,8 +110,8 @@ const ServiceAttributeTable_t SDP_Attribute_Table[] PROGMEM =
{
{.AttributeID = SDP_ATTRIBUTE_ID_SERVICERECORDHANDLE, .Data = &SDP_Attribute_ServiceHandle },
{.AttributeID = SDP_ATTRIBUTE_ID_SERVICECLASSIDS, .Data = &SDP_Attribute_ServiceClassIDs },
{.AttributeID = SDP_ATTRIBUTE_ID_VERSION, .Data = &SDP_Attribute_Version },
{.AttributeID = SDP_ATTRIBUTE_ID_LANGIDOFFSET, .Data = &SDP_Attribute_LangOffset },
{.AttributeID = SDP_ATTRIBUTE_ID_VERSION, .Data = &SDP_Attribute_Version },
{.AttributeID = SDP_ATTRIBUTE_ID_SERVICENAME, .Data = &SDP_Attribute_ServiceName },
{.AttributeID = SDP_ATTRIBUTE_ID_SERVICEDESCRIPTION, .Data = &SDP_Attribute_ServiceDescription },
@ -139,6 +139,21 @@ const struct
}
};
const struct
{
uint8_t Header;
uint8_t Size;
Item16Bit_t OffsetList[];
} PROGMEM RFCOMM_Attribute_LangOffset =
{
.Header = (SDP_DATATYPE_Sequence | SDP_DATASIZE_Variable8Bit),
.Size = (sizeof(Item16Bit_t) * 1),
.OffsetList =
{
{.Header = (SDP_DATATYPE_UnsignedInt | SDP_DATASIZE_16Bit), .Value = SWAPENDIAN_16(0x0100)}
}
};
const struct
{
uint8_t Header;
@ -167,6 +182,7 @@ const ServiceAttributeTable_t RFCOMM_Attribute_Table[] PROGMEM =
{
{.AttributeID = SDP_ATTRIBUTE_ID_SERVICERECORDHANDLE, .Data = &RFCOMM_Attribute_ServiceHandle },
{.AttributeID = SDP_ATTRIBUTE_ID_SERVICECLASSIDS, .Data = &RFCOMM_Attribute_ServiceClassIDs },
{.AttributeID = SDP_ATTRIBUTE_ID_LANGIDOFFSET, .Data = &RFCOMM_Attribute_LangOffset },
{.AttributeID = SDP_ATTRIBUTE_ID_SERVICENAME, .Data = &RFCOMM_Attribute_ServiceName },
{.AttributeID = SDP_ATTRIBUTE_ID_SERVICEDESCRIPTION, .Data = &RFCOMM_Attribute_ServiceDescription },

4
Demos/Host/Incomplete/BluetoothHost/Lib/SDPServices.h
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@ -49,13 +49,13 @@
#define SDP_ATTRIBUTE_ID_SERVICERECORDHANDLE 0x0000
#define SDP_ATTRIBUTE_ID_SERVICECLASSIDS 0x0001
#define SDP_ATTRIBUTE_ID_LANGIDOFFSET 0x0006
#define SDP_ATTRIBUTE_ID_AVAILABILITY 0x0008
#define SDP_ATTRIBUTE_ID_VERSION 0x0200
#define SDP_ATTRIBUTE_ID_SERVICENAME 0x0100
#define SDP_ATTRIBUTE_ID_SERVICEDESCRIPTION 0x0101
#define SWAPENDIAN_16(x) ((((x) & 0xFF00) >> 8) | (((x) & 0x00FF) << 8))
#define SWAPENDIAN_32(x) (SWAPENDIAN_16(((x) & 0xFFFF0000) >> 16) | SWAPENDIAN_16(((x) & 0x0000FFFF) << 16))
#define SWAPENDIAN_32(x) ((((x) & 0xFF000000) >> 24) | (((x) & 0x00FF0000) >> 8) | \
(((x) & 0x0000FF00) << 8) | (((x) & 0x000000FF) << 24))
/** Terminator for a service attribute table of type \ref ServiceAttributeTable_t. */
#define SERVICE_ATTRIBUTE_TABLE_TERMINATOR {.Data = NULL}

45
Demos/Host/Incomplete/BluetoothHost/Lib/ServiceDiscoveryProtocol.c
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@ -116,11 +116,10 @@ static void SDP_ProcessServiceSearch(const SDP_PDUHeader_t* const SDPHeader, Blu
/* Search through the list of UUIDs one at a time looking for matching search Attributes */
for (uint8_t CurrUUIDItem = 0; CurrUUIDItem < TotalUUIDs; CurrUUIDItem++)
{
/* Retrieve the attribute table of the current search UUID from the global UUID table if it exists */
ServiceAttributeTable_t* AttributeTable = SDP_GetAttributeTable(UUIDList[CurrUUIDItem]);
ServiceAttributeTable_t* AttributeTable;
/* If the UUID does not exist in the global UUID table, continue on to the next search UUID */
if (AttributeTable == NULL)
/* Retrieve the attribute table of the current search UUID from the global UUID table if it exists */
if ((AttributeTable = SDP_GetAttributeTable(UUIDList[CurrUUIDItem])) == NULL)
continue;
BT_SDP_DEBUG(2, " -- Found UUID %d in table", CurrUUIDItem);
@ -217,8 +216,11 @@ static void SDP_ProcessServiceAttribute(const SDP_PDUHeader_t* const SDPHeader,
uint8_t AttrHeaderSize;
SDP_GetLocalAttributeContainerSize(ServiceRecord, &AttrHeaderSize);
/* Retrieve the endian-swapped service handle of the current service being examined */
uint32_t CurrServiceHandle = SwapEndian_32(pgm_read_dword(ServiceRecord + AttrHeaderSize));
/* Check if the current service in the service table has the requested service handle */
if (memcmp_P(ServiceRecord + AttrHeaderSize, &ServiceHandle, sizeof(uint32_t)) == 0)
if (ServiceHandle == CurrServiceHandle)
{
*TotalResponseSize += SDP_AddListedAttributesToResponse(CurrAttributeTable, AttributeList, TotalAttributes,
&CurrResponsePos);
@ -300,15 +302,15 @@ static void SDP_ProcessServiceSearchAttribute(const SDP_PDUHeader_t* const SDPHe
/* Search through the list of UUIDs one at a time looking for matching search Attributes */
for (uint8_t CurrUUIDItem = 0; CurrUUIDItem < TotalUUIDs; CurrUUIDItem++)
{
/* Retrieve the attribute table of the current search UUID from the global UUID table if it exists */
ServiceAttributeTable_t* AttributeTable = SDP_GetAttributeTable(UUIDList[CurrUUIDItem]);
ServiceAttributeTable_t* AttributeTable;
/* If the UUID does not exist in the global UUID table, continue on to the next search UUID */
if (AttributeTable == NULL)
/* Retrieve the attribute table of the current search UUID from the global UUID table if it exists */
if ((AttributeTable = SDP_GetAttributeTable(UUIDList[CurrUUIDItem])) == NULL)
continue;
BT_SDP_DEBUG(2, " -- Found UUID %d in table", CurrUUIDItem);
/* Add the listed attributes for the found UUID to the response */
*TotalResponseSize += SDP_AddListedAttributesToResponse(AttributeTable, AttributeList, TotalAttributes,
&CurrResponsePos);
}
@ -361,23 +363,26 @@ static uint16_t SDP_AddListedAttributesToResponse(const ServiceAttributeTable_t*
for (uint8_t CurrAttribute = 0; CurrAttribute < TotalAttributes; CurrAttribute++)
{
uint16_t* AttributeIDRange = AttributeList[CurrAttribute];
void* AttributeValue;
/* Look in the current Attribute Range for a matching Attribute ID in the UUID's Attribute table */
for (uint32_t CurrAttributeID = AttributeIDRange[0]; CurrAttributeID <= AttributeIDRange[1]; CurrAttributeID++)
/* Look through the current service's attribute list, examining all the attributes */
while ((AttributeValue = (void*)pgm_read_word(&AttributeTable->Data)) != NULL)
{
/* Retrieve a PROGMEM pointer to the value of the current Attribute ID, if it exists in the UUID's Attribute table */
const void* AttributeValue = SDP_GetAttributeValue(AttributeTable, CurrAttributeID);
/* If the Attribute does not exist in the current UUID's Attribute table, continue to the next Attribute ID */
if (AttributeValue == NULL)
continue;
/* Get the current Attribute's ID from the current attribute table entry */
uint16_t CurrAttributeID = pgm_read_word(&AttributeTable->AttributeID);
/* Check if the current Attribute's ID is within the current Attribute range */
if ((CurrAttributeID >= AttributeIDRange[0]) && (CurrAttributeID <= AttributeIDRange[1]))
{
BT_SDP_DEBUG(2, " -- Add Attribute 0x%04X", CurrAttributeID);
/* Increment the current UUID's returned Attribute container size by the number of added bytes */
*AttributeListSize += SDP_AddAttributeToResponse(CurrAttributeID, AttributeValue, BufferPos);
}
AttributeTable++;
}
/* Increment the outer container size by the number of added bytes */
TotalResponseSize += 3 + *AttributeListSize;
}
@ -551,12 +556,8 @@ static uint8_t SDP_GetUUIDList(uint8_t UUIDList[][UUID_SIZE_BYTES], const void**
/* Copy over the base UUID value to the free UUID slot in the list */
memcpy_P(CurrentUUID, &BaseUUID, sizeof(BaseUUID));
/* Copy over UUID from the container to the free slot - if a short UUID (<= 4 bytes) it replaces the lower
4 bytes of the base UUID, otherwise it replaces the UUID completely */
if (UUIDLength <= 4)
/* Copy over UUID from the container to the free slot */
memcpy(&CurrentUUID[UUID_SIZE_BYTES - UUIDLength], *CurrentParameter, UUIDLength);
else
memcpy(&CurrentUUID[0], *CurrentParameter, UUIDLength);
BT_SDP_DEBUG(2, "-- UUID (%d): %02X%02X%02X%02X-%02X%02X-%02X%02X-%02X%02X-%02X%02X%02X%02X%02X%02X",
UUIDLength,

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