diff options
Diffstat (limited to 'avstream/avshws/device.cpp')
| -rw-r--r-- | avstream/avshws/device.cpp | 185 |
1 files changed, 150 insertions, 35 deletions
diff --git a/avstream/avshws/device.cpp b/avstream/avshws/device.cpp index 75b06cd5..2f54aca4 100644 --- a/avstream/avshws/device.cpp +++ b/avstream/avshws/device.cpp @@ -161,7 +161,7 @@ Return Value: // // By PnP, it's possible to receive multiple starts without an intervening // stop (to reevaluate resources, for example). Thus, we only perform - // creations of the simulation on the initial start and ignore any + // creations of the simulation on the initial start and ignore any // subsequent start. Hardware drivers with resources should evaluate // resources and make changes on 2nd start. // @@ -173,7 +173,7 @@ Return Value: // If we couldn't create the hardware simulation, fail. // Status = STATUS_INSUFFICIENT_RESOURCES; - + } else { Status = KsAddItemToObjectBag ( m_Device -> Bag, @@ -197,15 +197,15 @@ Return Value: // // Set up DMA... // - // Ordinarilly, we'd be using InterfaceBuffer or - // InterfaceTypeUndefined if !NT_SUCCESS (IfStatus) as the - // InterfaceType below; however, for the purposes of this sample, + // Ordinarilly, we'd be using InterfaceBuffer or + // InterfaceTypeUndefined if !NT_SUCCESS (IfStatus) as the + // InterfaceType below; however, for the purposes of this sample, // we lie and say we're on the PCI Bus. Otherwise, we're using map // registers on x86 32 bit physical to 32 bit logical and this isn't // what I want to show in this sample. // // - // NTSTATUS IfStatus = + // NTSTATUS IfStatus = IoGetDeviceProperty ( m_Device -> PhysicalDeviceObject, @@ -216,7 +216,7 @@ Return Value: ); // - // Initialize our fake device description. We claim to be a + // Initialize our fake device description. We claim to be a // bus-mastering 32-bit scatter/gather capable piece of hardware. // DeviceDescription.Version = DEVICE_DESCRIPTION_VERSION; @@ -229,7 +229,7 @@ Return Value: DeviceDescription.Dma32BitAddresses = TRUE; DeviceDescription.AutoInitialize = FALSE; DeviceDescription.MaximumLength = (ULONG) -1; - + // // Get a DMA adapter object from the system. // @@ -238,21 +238,21 @@ Return Value: &DeviceDescription, &m_NumberOfMapRegisters ); - + if (!m_DmaAdapterObject) { Status = STATUS_UNSUCCESSFUL; } - + } - + if (NT_SUCCESS (Status)) { // - // Initialize our DMA adapter object with AVStream. This is + // Initialize our DMA adapter object with AVStream. This is // **ONLY** necessary **IF** you are doing DMA directly into // capture buffers as this sample does. For this, // KSPIN_FLAG_GENERATE_MAPPINGS must be specified on a queue. // - + // // The (1 << 20) below is the maximum size of a single s/g mapping // that this hardware can handle. Note that I have pulled this @@ -264,11 +264,11 @@ Return Value: (1 << 20), sizeof (KSMAPPING) ); - + } #endif } - + return Status; } @@ -306,7 +306,7 @@ Return Value: // // Return the DMA adapter back to the system. // - m_DmaAdapterObject -> DmaOperations -> + m_DmaAdapterObject -> DmaOperations -> PutDmaAdapter (m_DmaAdapterObject); m_DmaAdapterObject = NULL; @@ -328,7 +328,7 @@ AcquireHardwareResources ( Routine Description: - Acquire hardware resources for the capture hardware. If the + Acquire hardware resources for the capture hardware. If the resources are already acquired, this will return an error. The hardware configuration must be passed as a VideoInfoHeader. @@ -376,44 +376,44 @@ Return Value: delete m_ImageSynth; m_ImageSynth = NULL; } - + // // Create the necessary type of image synthesizer. // if (m_VideoInfoHeader -> bmiHeader.biBitCount == 24 && m_VideoInfoHeader -> bmiHeader.biCompression == KS_BI_RGB) { - + // // If we're RGB24, create a new RGB24 synth. RGB24 surfaces // can be in either orientation. The origin is lower left if // height < 0. Otherwise, it's upper left. // - m_ImageSynth = new (NonPagedPoolNx, 'RysI') + m_ImageSynth = new (NonPagedPoolNx, 'RysI') CRGB24Synthesizer ( m_VideoInfoHeader -> bmiHeader.biHeight >= 0 ); - + } else if (m_VideoInfoHeader -> bmiHeader.biBitCount == 16 && (m_VideoInfoHeader -> bmiHeader.biCompression == FOURCC_YUY2)) { - + // // If we're UYVY, create the YUV synth. // m_ImageSynth = new(NonPagedPoolNx, 'YysI') CYUVSynthesizer; - + } else // // We don't synthesize anything but RGB 24 and UYVY. // Status = STATUS_INVALID_PARAMETER; - + if (NT_SUCCESS (Status) && !m_ImageSynth) { - + Status = STATUS_INSUFFICIENT_RESOURCES; - - } + + } if (NT_SUCCESS (Status)) { // @@ -428,7 +428,7 @@ Return Value: // ReleaseHardwareResources (); } - + } else { // @@ -660,9 +660,9 @@ Return Value: PAGED_CODE(); - - return + + return m_HardwareSimulation -> ProgramScatterGatherMappings ( Clone, Buffer, @@ -749,7 +749,7 @@ Return Value: // of hardware registers (ReadNumberOfMappingsCompleted) which would likely // be done in the ISR. // - ULONG NumMappingsCompleted = + ULONG NumMappingsCompleted = m_HardwareSimulation -> ReadNumberOfMappingsCompleted (); // @@ -774,7 +774,7 @@ Return Value: // CaptureFilterDescriptor: // // The filter descriptor for the capture device. -DEFINE_KSFILTER_DESCRIPTOR_TABLE (FilterDescriptors) { +DEFINE_KSFILTER_DESCRIPTOR_TABLE (FilterDescriptors) { &CaptureFilterDescriptor }; @@ -810,8 +810,8 @@ CaptureDeviceDispatch = { // This is the device descriptor for the capture device. It points to the // dispatch table and contains a list of filter descriptors that describe // filter-types that this device supports. Note that the filter-descriptors -// can be created dynamically and the factories created via -// KsCreateFilterFactory as well. +// can be created dynamically and the factories created via +// KsCreateFilterFactory as well. // const KSDEVICE_DESCRIPTOR @@ -865,7 +865,7 @@ Return Value: // at add & start. Everything is done based on the descriptors passed // here. // - return + return KsInitializeDriver ( DriverObject, RegistryPath, @@ -873,3 +873,118 @@ Return Value: ); } + +/************************************************* + + Global Functions + +*************************************************/ + +/*++ + +Routine Description: + + Array delete() operator. + +Arguments: + + pVoid - + The memory to free. + +Return Value: + + None + +--*/ +void +__cdecl +operator delete[]( + PVOID pVoid +) +{ + if (pVoid) + { + ExFreePool(pVoid); + } +} + +/*++ + +Routine Description: + + Sized delete() operator. + +Arguments: + + pVoid - + The memory to free. + + size - + The size of the memory to free. + +Return Value: + + None + +--*/ +void __cdecl operator delete +( + void *pVoid, + size_t /*size*/ +) +{ + if (pVoid) + { + ExFreePool(pVoid); + } +} + +/*++ + +Routine Description: + + Sized delete[]() operator. + +Arguments: + + pVoid - + The memory to free. + + size - + The size of the memory to free. + +Return Value: + + None + +--*/ +void __cdecl operator delete[] +( + void *pVoid, + size_t /*size*/ +) +{ + if (pVoid) + { + ExFreePool(pVoid); + } +} + +PVOID operator new +( + size_t iSize, + _When_((poolType & NonPagedPoolMustSucceed) != 0, + __drv_reportError("Must succeed pool allocations are forbidden. " + "Allocation failures cause a system crash")) + POOL_TYPE poolType, + ULONG tag +) +{ + PVOID result = ExAllocatePoolWithTag(poolType,iSize,tag); + + if (result) { + RtlZeroMemory(result,iSize); + } + + return result; +} |