Test: fix path joining for gstreamer tests

The hosts were using the os package wchich does not work while running
test from os remotly.

Change it to use host path joining methods.

Author: DawidWesierski4

tests/validation/tests/single/gstreamer/anc_format/test_anc_format.py

@@ -10,7 +10,7 @@
 
 
 # helper function to setup input and output file paths for ancillary files
-def setup_paths(media_file):
+def setup_paths(media_file, host):
     media_file_info, media_file_path = media_file
     if not media_file_path:
         raise ValueError("ramdisk was not setup correctly for media_file fixture")

tests/validation/tests/single/gstreamer/audio_format/test_audio_format.py

@@ -46,11 +46,11 @@ def test_audio_format(
     if not media_file_path:
         raise ValueError("ramdisk was not setup correctly for media_file fixture")
 
+    # Get the first host for remote execution
+    host = list(hosts.values())[0]
     input_file_path = os.path.join(media_file_path, "input_test_audio.pcm")
     output_file_path = os.path.join(media_file_path, "output_test_audio.pcm")
 
-    # Get the first host for remote execution
-    host = list(hosts.values())[0]
     interfaces_list = setup_interfaces.get_interfaces_list_single(
         test_config.get("interface_type", "VF")
     )

tests/validation/tests/single/gstreamer/video_format/test_video_format.py

@@ -11,31 +11,39 @@
 
 
 @pytest.mark.nightly
+@pytest.mark.parametrize(
+    "media_file",
+    list(gstreamer_formats.values()),
+    indirect=["media_file"],
+    ids=list(gstreamer_formats.keys()),
+)
 @pytest.mark.parametrize("file", gstreamer_formats.keys())
 def test_video_format(
     hosts,
     build,
-    media,
     setup_interfaces: InterfaceSetup,
     file,
     test_time,
     test_config,
+    media_file,
     prepare_ramdisk,
 ):
-    video_file = gstreamer_formats[file]
+    video_file, media_file_path = media_file
 
     # Get the first host for remote execution
     host = list(hosts.values())[0]
     interfaces_list = setup_interfaces.get_interfaces_list_single(
         test_config.get("interface_type", "VF")
     )
 
+    media_dir = host.path.dirname(media_file_path)
+    output_file_path = os.path.join(media_file_path, "output_video.yuv")
     input_file_path = media_create.create_video_file(
         width=video_file["width"],
         height=video_file["height"],
         framerate=video_file["fps"],
         format=GstreamerApp.video_format_change(video_file["format"]),
-        media_path=media,
+        media_path=media_dir,
         duration=3,
         host=host,
     )
@@ -55,7 +63,7 @@ def test_video_format(
     rx_config = GstreamerApp.setup_gstreamer_st20p_rx_pipeline(
         build=build,
         nic_port_list=interfaces_list[1],
-        output_path=os.path.join(media, "output_video.yuv"),
+        output_path=output_file_path,
         width=video_file["width"],
         height=video_file["height"],
         framerate=video_file["fps"],
@@ -70,7 +78,7 @@ def test_video_format(
             tx_command=tx_config,
             rx_command=rx_config,
             input_file=input_file_path,
-            output_file=os.path.join(media, "output_video.yuv"),
+            output_file=output_file_path,
             test_time=test_time,
             host=host,
             tx_first=False,
@@ -79,4 +87,4 @@ def test_video_format(
     finally:
         # Remove the video file after the test
         media_create.remove_file(input_file_path, host=host)
-        media_create.remove_file(os.path.join(media, "output_video.yuv"), host=host)
+        media_create.remove_file(output_file_path, host=host)

tests/validation/tests/single/gstreamer/video_resolution/test_video_resolution.py

@@ -52,7 +52,7 @@ def test_video_resolutions(
             request=request,
         )
 
-    media_dir = os.path.dirname(media_file_path)
+    media_dir = host.path.dirname(media_file_path)
     input_file_path = media_create.create_video_file(
         width=video_file["width"],
         height=video_file["height"],