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hidclass.sys: Implement IOCTL_GET(SET)_NUM_DEVICE_INPUT_BUFFERS. 

Signed-off-by: Aric Stewart <aric@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Aric Stewart 2015-10-08 14:35:27 -05:00 committed by Alexandre Julliard
parent d03b8780ca
commit b95027f048
3 changed files with 65 additions and 0 deletions
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35
dlls/hidclass.sys/buffer.c
View File

@ -27,6 +27,8 @@
WINE_DEFAULT_DEBUG_CHANNEL(hid);
#define BASE_BUFFER_SIZE 32
#define MIN_BUFFER_SIZE 2
#define MAX_BUFFER_SIZE 512
struct ReportRingBuffer
{
@ -85,6 +87,39 @@ UINT RingBuffer_GetBufferSize(struct ReportRingBuffer *ring)
return ring->buffer_size;
}
UINT RingBuffer_GetSize(struct ReportRingBuffer *ring)
{
return ring->size;
}
NTSTATUS RingBuffer_SetSize(struct ReportRingBuffer *ring, UINT size)
{
BYTE* new_buffer;
int i;
if (size < MIN_BUFFER_SIZE || size > MAX_BUFFER_SIZE || size == ring->size)
return STATUS_INVALID_PARAMETER;
EnterCriticalSection(&ring->lock);
ring->start = ring->end = 0;
for (i = 0; i < ring->pointer_alloc; i++)
{
if (ring->pointers[i] != 0xffffffff)
ring->pointers[i] = 0;
}
new_buffer = HeapAlloc(GetProcessHeap(), 0, ring->buffer_size * size);
if (!new_buffer)
{
LeaveCriticalSection(&ring->lock);
return STATUS_NO_MEMORY;
}
HeapFree(GetProcessHeap(), 0, ring->buffer);
ring->buffer = new_buffer;
ring->size = size;
LeaveCriticalSection(&ring->lock);
return STATUS_SUCCESS;
}
void RingBuffer_Read(struct ReportRingBuffer *ring, UINT index, void *output, UINT *size)
{
void *ret = NULL;

28
dlls/hidclass.sys/device.c
View File

@ -512,6 +512,34 @@ NTSTATUS WINAPI HID_Device_ioctl(DEVICE_OBJECT *device, IRP *irp)
irp->IoStatus.u.Status = STATUS_SUCCESS;
break;
}
case IOCTL_SET_NUM_DEVICE_INPUT_BUFFERS:
{
irp->IoStatus.Information = 0;
if (irpsp->Parameters.DeviceIoControl.InputBufferLength != sizeof(ULONG))
{
irp->IoStatus.u.Status = rc = STATUS_BUFFER_OVERFLOW;
}
else
{
rc = RingBuffer_SetSize(extension->ring_buffer, *(ULONG*)irp->AssociatedIrp.SystemBuffer);
irp->IoStatus.u.Status = rc;
}
break;
}
case IOCTL_GET_NUM_DEVICE_INPUT_BUFFERS:
{
if (irpsp->Parameters.DeviceIoControl.OutputBufferLength < sizeof(ULONG))
{
irp->IoStatus.u.Status = rc = STATUS_BUFFER_TOO_SMALL;
}
else
{
*(ULONG*)irp->AssociatedIrp.SystemBuffer = RingBuffer_GetSize(extension->ring_buffer);
rc = irp->IoStatus.u.Status = STATUS_SUCCESS;
}
break;
}
default:
{
ULONG code = irpsp->Parameters.DeviceIoControl.IoControlCode;

2
dlls/hidclass.sys/hid.h
View File

@ -61,8 +61,10 @@ UINT RingBuffer_AddPointer(struct ReportRingBuffer *buffer) DECLSPEC_HIDDEN;
void RingBuffer_RemovePointer(struct ReportRingBuffer *ring, UINT index) DECLSPEC_HIDDEN;
void RingBuffer_Read(struct ReportRingBuffer *buffer, UINT index, void *output, UINT *size) DECLSPEC_HIDDEN;
UINT RingBuffer_GetBufferSize(struct ReportRingBuffer *buffer) DECLSPEC_HIDDEN;
UINT RingBuffer_GetSize(struct ReportRingBuffer *buffer) DECLSPEC_HIDDEN;
void RingBuffer_Destroy(struct ReportRingBuffer *buffer) DECLSPEC_HIDDEN;
struct ReportRingBuffer* RingBuffer_Create(UINT buffer_size) DECLSPEC_HIDDEN;
NTSTATUS RingBuffer_SetSize(struct ReportRingBuffer *buffer, UINT size) DECLSPEC_HIDDEN;
typedef struct _minidriver
{