player: fix SDL_UpdateNVTexture ctypes cast — cast c_char_Array to LP_c_ubyte

2026-03-24 00:03:34 +01:00
parent fe2f25d4cf
commit 0c8e2c2a11
1 changed files with 5 additions and 2 deletions
@@ -244,8 +244,11 @@ class GStreamerBackend(PlayerBackend):
                if frame.pixel_format == "NV12" and frame.uv_pixels is not None:
                    # Zero-copy NV12 path: upload Y and UV planes separately.
                    # SDL_UpdateNVTexture avoids a full BGRA conversion on CPU.
-                    y_buf = ctypes.create_string_buffer(frame.pixels)
-                    uv_buf = ctypes.create_string_buffer(frame.uv_pixels)
+                    # ctypes.create_string_buffer returns c_char_Array_N; cast to
+                    # LP_c_ubyte which SDL_UpdateNVTexture requires.
+                    _ubyte_p = ctypes.POINTER(ctypes.c_ubyte)
+                    y_buf = ctypes.cast(ctypes.create_string_buffer(frame.pixels), _ubyte_p)
+                    uv_buf = ctypes.cast(ctypes.create_string_buffer(frame.uv_pixels), _ubyte_p)
                    result = sdl2.SDL_UpdateNVTexture(
                        self._texture, None,
                        y_buf, frame.pitch,