功能：完善2K串流、显示恢复与输入优化

terminal/moonlight/tests/test_latency.cpp

@@ -0,0 +1,75 @@
+#include <SDL.h>
+#include <cstdio>
+#include "vdi_mouse_batch.h"
+#include "vdi_latest_frame.h"
+#undef NDEBUG
+#include <cassert>
+
+static SDL_Event motion(int x, Uint32 which = 1)
+{
+    SDL_Event event{};
+    event.type = SDL_MOUSEMOTION;
+    event.motion.which = which;
+    event.motion.windowID = 1;
+    event.motion.x = x;
+    event.motion.y = 100;
+    event.motion.xrel = 1;
+    return event;
+}
+
+int main()
+{
+    assert(SDL_Init(SDL_INIT_EVENTS) == 0);
+    for (Uint32 boundary : {Uint32(SDL_MOUSEBUTTONDOWN), Uint32(SDL_MOUSEBUTTONUP),
+                            Uint32(SDL_KEYDOWN), Uint32(SDL_USEREVENT)}) {
+        SDL_FlushEvents(SDL_FIRSTEVENT, SDL_LASTEVENT);
+        SDL_Event first = motion(10), adjacent = motion(20), later = motion(90), barrier{};
+        barrier.type = boundary;
+        assert(SDL_PushEvent(&adjacent) == 1);
+        assert(SDL_PushEvent(&barrier) == 1);
+        assert(SDL_PushEvent(&later) == 1);
+        vdiBatchMouseMotion(first.motion);
+        assert(first.motion.x == 20 && first.motion.xrel == 2);
+        SDL_Event next;
+        assert(SDL_PeepEvents(&next, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT) == 1);
+        assert(next.type == boundary);
+        assert(SDL_PeepEvents(&next, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT) == 1);
+        assert(next.motion.x == 90);
+    }
+    SDL_FlushEvents(SDL_FIRSTEVENT, SDL_LASTEVENT);
+    SDL_Event first = motion(0);
+    for (int i = 1; i <= 200; ++i) {
+        SDL_Event next = motion(i);
+        assert(SDL_PushEvent(&next) == 1);
+    }
+    vdiBatchMouseMotion(first.motion);
+    assert(first.motion.x == 64); // Work per dispatch is bounded.
+    assert(SDL_PeepEvents(nullptr, 0, SDL_PEEKEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT) == 136);
+    SDL_FlushEvents(SDL_FIRSTEVENT, SDL_LASTEVENT);
+    first = motion(10);
+    SDL_Event synthetic = motion(99, SDL_TOUCH_MOUSEID);
+    assert(SDL_PushEvent(&synthetic) == 1);
+    vdiBatchMouseMotion(first.motion);
+    assert(first.motion.x == 10);
+
+    AVFrame* presented = av_frame_alloc();
+    assert(presented);
+    presented->buf[0] = av_buffer_alloc(16);
+    assert(presented->buf[0]);
+    QQueue<AVFrame*> queue;
+    assert(vdiDiscardQueuedFrames(queue) == 0);
+    for (int i = 0; i < 200; ++i) {
+        unsigned dropped = vdiDiscardQueuedFrames(queue);
+        assert(dropped == (i == 0 ? 0u : 1u));
+        AVFrame* frame = av_frame_alloc();
+        assert(frame);
+        frame->pts = i;
+        queue.enqueue(frame);
+        assert(queue.size() == 1 && queue.head()->pts == i);
+        assert(av_buffer_get_ref_count(presented->buf[0]) == 1);
+    }
+    assert(vdiDiscardQueuedFrames(queue) == 1);
+    av_frame_free(&presented);
+    SDL_Quit();
+    std::puts("PASS: SDL event boundaries, bounded motion work, latest decoded frame ownership");
+}