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[host] app: fix issue with wrong cursor shape being sent for new clients

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When a new cursor shape is provided by the capture interface we need to
retain a copy of it incase a new client connects which will not yet have
the cursor shape. The logic here was flawed causing the wrong shape to
be sent to a new client in some instances.
This commit is contained in:
Geoffrey McRae
2021-07-04 19:04:54 +10:00
parent d82f2e510d
commit e9b009db9f
1 changed files with 39 additions and 28 deletions
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67
host/src/app.c
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@@ -321,29 +321,44 @@ bool captureGetPointerBuffer(void ** data, uint32_t * size)
return true;
}
static void sendPointer(bool newClient)
static void postPointer(uint32_t flags, PLGMPMemory mem)
{
PLGMPMemory mem;
if (app.pointerInfo.shapeUpdate || newClient)
LGMP_STATUS status;
while ((status = lgmpHostQueuePost(app.pointerQueue, flags, mem)) != LGMP_OK)
{
if (!newClient)
if (status == LGMP_ERR_QUEUE_FULL)
{
// swap the latest shape buffer out of rotation
PLGMPMemory tmp = app.pointerShape;
app.pointerShape = app.pointerMemory[app.pointerIndex];
app.pointerMemory[app.pointerIndex] = tmp;
usleep(1);
continue;
}
// use the last known shape buffer
mem = app.pointerShape;
DEBUG_ERROR("lgmpHostQueuePost Failed (Pointer): %s", lgmpStatusString(status));
break;
}
else
mem = app.pointerMemory[app.pointerIndex];
}
if (++app.pointerIndex == POINTER_SHAPE_BUFFERS)
app.pointerIndex = 0;
static void sendPointer(bool newClient)
{
// new clients need the last known shape and current position
if (newClient)
{
if (!app.pointerShapeValid)
return;
// update the saved details with the current cursor position
KVMFRCursor *cursor = lgmpHostMemPtr(app.pointerShape);
cursor->x = app.pointerInfo.x;
cursor->y = app.pointerInfo.y;
const uint32_t flags = CURSOR_FLAG_POSITION | CURSOR_FLAG_SHAPE |
(app.pointerInfo.visible ? CURSOR_FLAG_VISIBLE : 0);
postPointer(flags, app.pointerShape);
return;
}
uint32_t flags = 0;
PLGMPMemory mem = app.pointerMemory[app.pointerIndex];
KVMFRCursor *cursor = lgmpHostMemPtr(mem);
if (app.pointerInfo.positionUpdate || newClient)
@@ -375,23 +390,19 @@ static void sendPointer(bool newClient)
}
app.pointerShapeValid = true;
}
if ((app.pointerInfo.shapeUpdate || newClient) && app.pointerShapeValid)
flags |= CURSOR_FLAG_SHAPE;
LGMP_STATUS status;
while ((status = lgmpHostQueuePost(app.pointerQueue, flags, mem)) != LGMP_OK)
{
if (status == LGMP_ERR_QUEUE_FULL)
{
usleep(1);
continue;
}
DEBUG_ERROR("lgmpHostQueuePost Failed (Pointer): %s", lgmpStatusString(status));
break;
// retain this memory for new clients
app.pointerMemory[app.pointerIndex] = app.pointerShape;
app.pointerShape = mem;
}
// only advance the index if the shape was changed
if ((flags & CURSOR_FLAG_SHAPE) != 0)
if (++app.pointerIndex == POINTER_SHAPE_BUFFERS)
app.pointerIndex = 0;
postPointer(flags, mem);
}
void capturePostPointerBuffer(CapturePointer pointer)