gstreamer/tests/validate/videorate/change_rate_while_playing.validatetest
Thibault Saunier 6499e2afa5 videorate: Fix changing rate property during playback
We need to take into account the base_ts to compute next_ts and it needs
to be updated on rate change.

This introduces `pending_rate` so that change rate is properly handled
in the streaming thread in a safe way.

Added tests

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-base/-/merge_requests/679>
2020-06-01 07:07:31 +00:00

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meta,
args = {
# We just want each frame to be different, and we just check their content by 'id'
"videotestsrc ! video/x-raw,framerate=10/1,width=320,height=240 ! videorate name=videorate ! fakesink sync=true qos=true",
},
configs = {
# Check dataflow on both videorate pads
"$(validateflow), pad=videorate:sink, buffers-checksum=as-id, ignored-event-types={ tag }",
"$(validateflow), pad=videorate:src, buffers-checksum=as-id, ignored-event-types={ tag }",
}
# Crank the 5 first buffers and check position is `5*(1/10fps)) = 0.5s`
crank-clock, expected-time=0.0
crank-clock, repeat=5
check-position, expected-position=0.5
# Ensure next buffer flows for expectations stability
wait, on-clock=true
checkpoint, text="Setting videorate.rate=0.5"
set-property, playback-time=0.5, target-element-name=videorate, property-name=rate, property-value="0.5"
crank-clock, repeat=5
check-position, expected-position=1.0
wait, on-clock=true
checkpoint, text="Setting videorate.rate=0.1"
set-property, playback-time=1.0, target-element-name=videorate, property-name=rate, property-value="0.1"
crank-clock, repeat=20
check-position, expected-position=3.0
wait, on-clock=true
checkpoint, text="Setting videorate.rate=2.0"
set-property, playback-time=2.0, target-element-name=videorate, property-name=rate, property-value="2.0"
crank-clock, repeat=10
check-position, expected-position=4.0
wait, on-clock=true
stop