[feat] implementation for ScreenCapturerSck::Destroy() and ScreenCapturerSck::Stop()

src/screen_capturer/macosx/screen_capturer_sck.cpp

@@ -19,15 +19,24 @@ int ScreenCapturerSck::Init(const int fps, cb_desktop_data cb) {
   return 0;
 }
 
-int ScreenCapturerSck::Destroy() { return 0; }
-
-int ScreenCapturerSck::Start() {
-  screen_capturer_sck_impl_->Start();
-
+int ScreenCapturerSck::Destroy() {
+  if (screen_capturer_sck_impl_) {
+    screen_capturer_sck_impl_->Destroy();
+  }
   return 0;
 }
 
-int ScreenCapturerSck::Stop() { return 0; }
+int ScreenCapturerSck::Start() {
+  screen_capturer_sck_impl_->Start();
+  return 0;
+}
+
+int ScreenCapturerSck::Stop() {
+  if (screen_capturer_sck_impl_) {
+    screen_capturer_sck_impl_->Stop();
+  }
+  return 0;
+}
 
 int ScreenCapturerSck::Pause(int monitor_index) {
   if (screen_capturer_sck_impl_) {

src/screen_capturer/macosx/screen_capturer_sck_impl.mm

@@ -58,9 +58,9 @@ class API_AVAILABLE(macos(14.0)) ScreenCapturerSckImpl : public ScreenCapturer {
 
   int SwitchTo(int monitor_index) override;
 
-  int Destroy() override { return 0; }
+  int Destroy() override;
 
-  int Stop() override { return 0; }
+  int Stop() override;
 
   int Pause(int monitor_index) override { return 0; }
 
@@ -263,6 +263,35 @@ int ScreenCapturerSckImpl::SwitchTo(int monitor_index) {
   return 0;
 }
 
+int ScreenCapturerSckImpl::Destroy() {
+  std::lock_guard<std::mutex> lock(lock_);
+  if (stream_) {
+    LOG_INFO("Destroying stream");
+    [stream_ stopCaptureWithCompletionHandler:nil];
+    stream_ = nil;
+  }
+  current_display_ = 0;
+  permanent_error_ = false;
+  _on_data = nullptr;
+  [helper_ releaseCapturer];
+  helper_ = nil;
+
+  return 0;
+}
+
+int ScreenCapturerSckImpl::Stop() {
+  [stream_ stopCaptureWithCompletionHandler:nil];
+  std::lock_guard<std::mutex> lock(lock_);
+  if (stream_) {
+    LOG_INFO("Stopping stream");
+    [stream_ stopCaptureWithCompletionHandler:nil];
+    stream_ = nil;
+  }
+  current_display_ = 0;
+
+  return 0;
+}
+
 void ScreenCapturerSckImpl::OnShareableContentCreated(SCShareableContent *content) {
   if (!content) {
     LOG_ERROR("getShareableContent failed");

src/single_window/thumbnail.cpp

@@ -117,7 +117,7 @@ void ScaleNv12ToABGR(char* src, int src_w, int src_h, int dst_w, int dst_h,
 
   memset(dst_rgba, 0, dst_w * dst_h * 4);
   for (int i = 0; i < dst_w * dst_h; ++i) {
-    dst_rgba[i * 4 + 3] = 255;
+    dst_rgba[i * 4 + 3] = 0xFF;
   }
 
   for (int y = 0; y < fit_h; ++y) {