def setcaps(self, this, caps):
gst.gst_caps_get_structure.restype = ctypes.c_void_p
structure = gst.gst_caps_get_structure(caps, 0)
width = ctypes.c_int()
gst.gst_structure_get_int(structure, 'width', ctypes.byref(width))
height = ctypes.c_int()
gst.gst_structure_get_int(structure, 'height', ctypes.byref(height))
self.element._set_frame_format(width.value, height.value)
return True
def _new_decoded_pad(self, decodebin, pad, last, data):
'''Called by decodebin element when a source pad is created.'''
caps = gst.gst_pad_get_caps(pad)
struct = gst.gst_caps_get_structure(caps, 0)
gst.gst_structure_get_name.restype = ctypes.c_char_p
name = gst.gst_structure_get_name(struct)
if name.startswith('audio/x-raw'):
channels = ctypes.c_int()
gst.gst_structure_get_int(
struct, 'channels', ctypes.byref(channels))
depth = sample_rate = 0 # TODO
self._new_audio_pad(pad, channels.value, depth, sample_rate)
elif name.startswith('video/x-raw'):
self._new_video_pad(pad)
def setcaps(self, this, caps):
gst.gst_caps_get_structure.restype = ctypes.c_void_p
structure = gst.gst_caps_get_structure(caps, 0)
rate = ctypes.c_int()
gst.gst_structure_get_int(structure, 'rate', ctypes.byref(rate))
self.rate = rate.value
channels = ctypes.c_int()
gst.gst_structure_get_int(structure, 'channels', ctypes.byref(channels))
depth = ctypes.c_int()
gst.gst_structure_get_int(structure, 'depth', ctypes.byref(depth))
self.format = openal.get_format(channels.value, depth.value)
self.element.channels = channels.value
self.element.rate = rate.value
self.bytes_per_second = \
float(channels.value * depth.value / 8 * rate.value)
return True
