зеркало из https://github.com/mozilla/cubeb.git
Clamp to positive value when computing latency for an output stream
Diagnosed by jolin@mozilla.com, the same code is also found in Chromium.
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d60b441123
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@ -646,8 +646,9 @@ aaudio_get_latency(cubeb_stream * stm, aaudio_direction_t direction,
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// For an output stream, the latency is positive, for an input stream, it's
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// negative. It can happen in some instances, e.g. around start of the stream
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// that the latency for output is negative, return 0 in this case.
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int64_t latency_ns = is_output ? std::max(0ll, app_frame_hw_time - signed_tstamp_ns)
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: signed_tstamp_ns - app_frame_hw_time;
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int64_t latency_ns = is_output
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? std::max(0ll, app_frame_hw_time - signed_tstamp_ns)
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: signed_tstamp_ns - app_frame_hw_time;
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int64_t latency_frames = stm->sample_rate * latency_ns / NS_PER_S;
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LOGV("Latency in frames (%s): %d (%dms)", is_output ? "output" : "input",
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