init

.venv/lib/python3.8/site-packages/pygame/_camera_vidcapture.py

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+"""pygame.camera.Camera implementation using the videocapture module for windows.
+
+http://videocapture.sourceforge.net/
+
+Binary windows wheels:
+  https://www.lfd.uci.edu/~gohlke/pythonlibs/#videocapture
+"""
+import pygame
+
+
+def list_cameras():
+    """Always only lists one camera.
+
+    Functionality not supported in videocapture module.
+    """
+    return [0]
+
+    # this just cycles through all the cameras trying to open them
+    # cameras = []
+    # for x in range(256):
+    #    try:
+    #        c = Camera(x)
+    #    except:
+    #        break
+    #    cameras.append(x)
+    # return cameras
+
+
+def init():
+    global vidcap
+    try:
+        import vidcap as vc
+    except ImportError:
+        from VideoCapture import vidcap as vc
+    vidcap = vc
+
+
+def quit():
+    global vidcap
+    vidcap = None
+
+
+class Camera:
+    # pylint: disable=unused-argument
+    def __init__(self, device=0, size=(640, 480), mode="RGB", show_video_window=0):
+        """device:  VideoCapture enumerates the available video capture devices
+                 on your system.  If you have more than one device, specify
+                 the desired one here.  The device number starts from 0.
+
+        show_video_window: 0 ... do not display a video window (the default)
+                           1 ... display a video window
+
+                         Mainly used for debugging, since the video window
+                         can not be closed or moved around.
+        """
+        self.dev = vidcap.new_Dev(device, show_video_window)
+        width, height = size
+        self.dev.setresolution(width, height)
+
+    def display_capture_filter_properties(self):
+        """Displays a dialog containing the property page of the capture filter.
+
+        For VfW drivers you may find the option to select the resolution most
+        likely here.
+        """
+        self.dev.displaycapturefilterproperties()
+
+    def display_capture_pin_properties(self):
+        """Displays a dialog containing the property page of the capture pin.
+
+        For WDM drivers you may find the option to select the resolution most
+        likely here.
+        """
+        self.dev.displaycapturepinproperties()
+
+    def set_resolution(self, width, height):
+        """Sets the capture resolution. (without dialog)"""
+        self.dev.setresolution(width, height)
+
+    def get_buffer(self):
+        """Returns a string containing the raw pixel data."""
+        return self.dev.getbuffer()
+
+    def start(self):
+        """Not implemented."""
+
+    def set_controls(self, **kwargs):
+        """Not implemented."""
+
+    def stop(self):
+        """Not implemented."""
+
+    def get_image(self, dest_surf=None):
+        """ """
+        return self.get_surface(dest_surf)
+
+    def get_surface(self, dest_surf=None):
+        """Returns a pygame Surface."""
+        abuffer, width, height = self.get_buffer()
+        if not abuffer:
+            return None
+        surf = pygame.image.frombuffer(abuffer, (width, height), "BGR")
+        surf = pygame.transform.flip(surf, 0, 1)
+        # if there is a destination surface given, we blit onto that.
+        if dest_surf:
+            dest_surf.blit(surf, (0, 0))
+        else:
+            dest_surf = surf
+        return dest_surf
+
+
+if __name__ == "__main__":
+    import pygame.examples.camera
+
+    pygame.camera.Camera = Camera
+    pygame.camera.list_cameras = list_cameras
+    pygame.examples.camera.main()