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Calculate pacing delay based on decode start time

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Schedule the frames to be decoded based on the pacing delay from the
last decode scheduled time. In the current implementation, multiple
threads and different functions in same thread can call
MaxWaitingTime(), thereby increasing the wait time each time the
function is called. Instead of returning the wait time for a future
frame based on the number of times the function is called, return the
wait time only for the next frame to be decoded. Threads can call the
function repeatedly to check the waiting time for next frame and wake
up and then go back to waiting if an encoded frame is not available.

Change-Id: I00886c1619599f94bde5d5eb87405572e435bd73
Bug: chromium:1237402
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/226502
Reviewed-by: Johannes Kron <kron@webrtc.org>
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Commit-Queue: Johannes Kron <kron@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#34660}
This commit is contained in:
Rezaul Barbhuiya
2021-08-05 17:54:11 -07:00
committed by WebRTC LUCI CQ
parent d937f50e20
commit 82c2248511
5 changed files with 33 additions and 15 deletions
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3
modules/video_coding/frame_buffer2_unittest.cc
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@ -55,7 +55,8 @@ class VCMTimingFake : public VCMTiming {
return last_ms_;
}
int64_t MaxWaitingTime(int64_t render_time_ms, int64_t now_ms) override {
int64_t MaxWaitingTime(int64_t render_time_ms,
int64_t now_ms) const override {
return render_time_ms - now_ms - kDecodeTime;
}