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baseparse: tune default duration estimate update interval

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Rather than a fixed default frame count, estimate frame count to aim for
an interval duration depending on fps if available, otherwise use old
fixed default.
This commit is contained in:
Mark Nauwelaerts 2011-01-21 14:53:39 +01:00 committed by Tim-Philipp Müller
parent d6d56d2420
commit ae23eb9955
1 changed files with 17 additions and 4 deletions
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21
gst/audioparsers/gstbaseparse.c
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@ -225,7 +225,7 @@ struct _GstBaseParsePrivate
guint min_frame_size;
guint format;
guint fps_num, fps_den;
guint update_interval;
gint update_interval;
guint bitrate;
guint lead_in, lead_out;
GstClockTime lead_in_ts, lead_out_ts;
@ -570,7 +570,7 @@ gst_base_parse_reset (GstBaseParse * parse)
parse->priv->flushing = FALSE;
parse->priv->offset = 0;
parse->priv->sync_offset = 0;
parse->priv->update_interval = 50;
parse->priv->update_interval = -1;
parse->priv->fps_num = parse->priv->fps_den = 0;
parse->priv->frame_duration = GST_CLOCK_TIME_NONE;
parse->priv->lead_in = parse->priv->lead_out = 0;
@ -1127,8 +1127,12 @@ gst_base_parse_update_duration (GstBaseParse * aacparse)
gst_object_unref (GST_OBJECT (peer));
if (qres) {
if (gst_base_parse_convert (parse, pformat, ptot,
GST_FORMAT_TIME, &dest_value))
GST_FORMAT_TIME, &dest_value)) {
parse->priv->estimated_duration = dest_value;
GST_LOG_OBJECT (parse,
"updated estimated duration to %" GST_TIME_FORMAT,
GST_TIME_ARGS (dest_value));
}
}
}
}
@ -1589,7 +1593,10 @@ gst_base_parse_push_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
parse->priv->acc_duration += GST_BUFFER_DURATION (buffer);
}
}
if (parse->priv->update_interval &&
/* 0 means disabled */
if (parse->priv->update_interval < 0)
parse->priv->update_interval = 50;
else if (parse->priv->update_interval > 0 &&
(parse->priv->framecount % parse->priv->update_interval) == 0)
gst_base_parse_update_duration (parse);
@ -2851,6 +2858,12 @@ gst_base_parse_set_frame_props (GstBaseParse * parse, guint fps_num,
gst_util_uint64_scale (GST_SECOND, fps_den * lead_in, fps_num);
parse->priv->lead_out_ts =
gst_util_uint64_scale (GST_SECOND, fps_den * lead_out, fps_num);
/* aim for about 1.5s to estimate duration */
if (parse->priv->update_interval < 0) {
parse->priv->update_interval = fps_num * 3 / (fps_den * 2);
GST_LOG_OBJECT (parse, "estimated update interval to %d frames",
parse->priv->update_interval);
}
}
GST_LOG_OBJECT (parse, "set fps: %d/%d => duration: %" G_GINT64_FORMAT " ms",
fps_num, fps_den, parse->priv->frame_duration / GST_MSECOND);