()
| 13 | import time |
| 14 | |
| 15 | def main(): |
| 16 | pipeline = gst.Pipeline("audiocontroller") |
| 17 | src = gst.element_factory_make("audiotestsrc", "src") |
| 18 | sink = gst.element_factory_make("alsasink", "sink") |
| 19 | pipeline.add(src, sink) |
| 20 | src.link(sink) |
| 21 | |
| 22 | control = gst.Controller(src, "freq", "volume") |
| 23 | control.set_interpolation_mode("volume", gst.INTERPOLATE_LINEAR) |
| 24 | control.set_interpolation_mode("freq", gst.INTERPOLATE_LINEAR) |
| 25 | |
| 26 | control.set("volume", 0, 0.0) |
| 27 | control.set("volume", 2 * gst.SECOND, 1.0) |
| 28 | control.set("volume", 4 * gst.SECOND, 0.0) |
| 29 | control.set("volume", 6 * gst.SECOND, 1.0) |
| 30 | |
| 31 | control.set("freq", 0, 440.0) |
| 32 | control.set("freq", 3 * gst.SECOND, 3000.0) |
| 33 | control.set("freq", 6 * gst.SECOND, 880.0) |
| 34 | |
| 35 | pipeline.set_state(gst.STATE_PLAYING) |
| 36 | |
| 37 | time.sleep(7) |
| 38 | |
| 39 | if __name__ == "__main__": |
| 40 | main() |
no test coverage detected