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<div class="moz-cite-prefix">On 8/28/16 12:50 AM, Paul B Mahol
wrote:<br>
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<blockquote
cite="mid:CAPYw7P6jP5_HciR28oRfV7ciR_1Wb2QYZ1kJpsRs7B=ZGNBU=g@mail.gmail.com"
type="cite">
<div dir="ltr">Hi,<br>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Sun, Aug 28, 2016 at 7:16 AM,
Christopher Snowhill <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:kode54@gmail.com"
target="_blank">kode54@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">I've
noticed that when using these libraries in my own
projects, at<br>
least in VGMStream, and with the WMA Pro codec, it is
necessary to<br>
perform my own pre-roll when seeking for looping, or else
the codec<br>
ramps the audio in from silence on every loop as it
catches back up to a<br>
valid state. I currently use either two seconds, or the
beginning of the<br>
file if it's less than two seconds prior to the intended
seek point,<br>
then discard sample data that is returned by the decoder.<br>
<br>
Is this always necessary by design? Or am I misusing the
seeking API?<br>
<br>
I currently use:<br>
<br>
int64_t ts = target_sample * formatCtx->duration /
total_samples;<br>
avformat_seek_file(formatCtx, -1, ts - 1000, ts, ts,
AVSEEK_FLAG_ANY);<br>
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<div>Do you call avcodec_flush_buffers()? <br>
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Yes, I do. Immediately after avformat_seek_file.<br>
<blockquote
cite="mid:CAPYw7P6jP5_HciR28oRfV7ciR_1Wb2QYZ1kJpsRs7B=ZGNBU=g@mail.gmail.com"
type="cite">
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<div class="gmail_extra"><br>
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