docs/tests: address follow-up review comments

Author: wysaid

docs/content/c-interface.md

@@ -138,20 +138,7 @@ bool frame_callback(const CcapVideoFrame* frame, void* userData) {
 ccap_provider_set_new_frame_callback(provider, frame_callback, NULL);
 ```
 
-### 7. Cleanup Resources
-
-```c
-// Stop capture
-ccap_provider_stop(provider);
-
-// Close device
-ccap_provider_close(provider);
-
-// Destroy provider
-ccap_provider_destroy(provider);
-```
-
-### 8. Optional: Video Writing (Windows/macOS)
+### 7. Optional: Video Writing (Windows/macOS)
 
 When built with `CCAP_ENABLE_VIDEO_WRITER=ON`, the C API can write camera frames to MP4/MOV files.
 
@@ -186,6 +173,19 @@ if (writer) {
 }
 ```
 
+### 8. Cleanup Resources
+
+```c
+// Stop capture
+ccap_provider_stop(provider);
+
+// Close device
+ccap_provider_close(provider);
+
+// Destroy provider
+ccap_provider_destroy(provider);
+```
+
 ## Complete Example
 
 See `examples/ccap_c_example.c` for a complete usage example.

docs/content/documentation.md

@@ -217,7 +217,7 @@ if (provider.open("", true)) {
 }
 ```
 
-Writer input supports `NV12`, `I420`, `BGR24`, and `BGRA32`.
+Writer input supports `NV12`, `NV12f`, `I420`, `I420f`, `BGR24`, and `BGRA32`.
 
 `VideoFrame::orientation` is honored by the writer path, including `BottomToTop` frames common on Windows RGB capture.
 

tests/test_video_writer.cpp

@@ -692,11 +692,16 @@ TEST_F(VideoWriterCTest, BottomToTopFramesRoundTripUpright) {
 // Helper: locate the built-in test video by walking up from CWD to find the project root
 static fs::path findTestVideo() {
     fs::path projectRoot = fs::current_path();
-    while (projectRoot.has_parent_path()) {
+    while (true) {
         if (fs::exists(projectRoot / "CMakeLists.txt") && fs::exists(projectRoot / "tests")) {
             break;
         }
-        projectRoot = projectRoot.parent_path();
+
+        const fs::path parent = projectRoot.parent_path();
+        if (parent.empty() || parent == projectRoot) {
+            break;
+        }
+        projectRoot = parent;
     }
     return projectRoot / "tests" / "test-data" / "test.mp4";
 }