mirror of
https://github.com/gnif/LookingGlass.git
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[host] app: fix issue with wrong cursor shape being sent for new clients
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.
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@ -321,29 +321,44 @@ bool captureGetPointerBuffer(void ** data, uint32_t * size)
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return true;
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}
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static void postPointer(uint32_t flags, PLGMPMemory mem)
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{
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LGMP_STATUS status;
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while ((status = lgmpHostQueuePost(app.pointerQueue, flags, mem)) != LGMP_OK)
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{
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if (status == LGMP_ERR_QUEUE_FULL)
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{
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usleep(1);
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continue;
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}
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DEBUG_ERROR("lgmpHostQueuePost Failed (Pointer): %s", lgmpStatusString(status));
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break;
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}
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}
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static void sendPointer(bool newClient)
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{
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PLGMPMemory mem;
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if (app.pointerInfo.shapeUpdate || newClient)
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// new clients need the last known shape and current position
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if (newClient)
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{
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if (!newClient)
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{
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// swap the latest shape buffer out of rotation
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PLGMPMemory tmp = app.pointerShape;
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app.pointerShape = app.pointerMemory[app.pointerIndex];
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app.pointerMemory[app.pointerIndex] = tmp;
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}
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if (!app.pointerShapeValid)
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return;
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// use the last known shape buffer
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mem = app.pointerShape;
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}
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else
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mem = app.pointerMemory[app.pointerIndex];
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// update the saved details with the current cursor position
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KVMFRCursor *cursor = lgmpHostMemPtr(app.pointerShape);
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cursor->x = app.pointerInfo.x;
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cursor->y = app.pointerInfo.y;
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if (++app.pointerIndex == POINTER_SHAPE_BUFFERS)
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app.pointerIndex = 0;
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const uint32_t flags = CURSOR_FLAG_POSITION | CURSOR_FLAG_SHAPE |
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(app.pointerInfo.visible ? CURSOR_FLAG_VISIBLE : 0);
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postPointer(flags, app.pointerShape);
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return;
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}
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uint32_t flags = 0;
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PLGMPMemory mem = app.pointerMemory[app.pointerIndex];
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KVMFRCursor *cursor = lgmpHostMemPtr(mem);
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if (app.pointerInfo.positionUpdate || newClient)
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@ -375,23 +390,19 @@ static void sendPointer(bool newClient)
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}
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app.pointerShapeValid = true;
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}
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if ((app.pointerInfo.shapeUpdate || newClient) && app.pointerShapeValid)
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flags |= CURSOR_FLAG_SHAPE;
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LGMP_STATUS status;
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while ((status = lgmpHostQueuePost(app.pointerQueue, flags, mem)) != LGMP_OK)
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{
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if (status == LGMP_ERR_QUEUE_FULL)
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{
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usleep(1);
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continue;
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// retain this memory for new clients
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app.pointerMemory[app.pointerIndex] = app.pointerShape;
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app.pointerShape = mem;
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}
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DEBUG_ERROR("lgmpHostQueuePost Failed (Pointer): %s", lgmpStatusString(status));
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break;
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}
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// only advance the index if the shape was changed
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if ((flags & CURSOR_FLAG_SHAPE) != 0)
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if (++app.pointerIndex == POINTER_SHAPE_BUFFERS)
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app.pointerIndex = 0;
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postPointer(flags, mem);
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}
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void capturePostPointerBuffer(CapturePointer pointer)
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