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baseparse: streamline query handling

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This commit is contained in:
Mark Nauwelaerts 2010-09-16 18:35:47 +02:00
parent a1f51f3d17
commit 420121705d
1 changed files with 83 additions and 50 deletions
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133
gst/audioparsers/gstbaseparse.c
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@ -1855,6 +1855,35 @@ gst_base_parse_get_drain (GstBaseParse * parse)
return ret;
}
static gboolean
gst_base_parse_get_duration (GstBaseParse * parse, GstFormat format,
GstClockTime * duration)
{
GstBaseParseClass *klass = GST_BASE_PARSE_GET_CLASS (parse);
gboolean res = FALSE;
g_return_val_if_fail (duration != NULL, FALSE);
*duration = GST_CLOCK_TIME_NONE;
if (parse->priv->duration != -1 && format == parse->priv->duration_fmt) {
GST_LOG_OBJECT (parse, "using provided duration");
*duration = parse->priv->duration;
res = TRUE;
} else if (parse->priv->duration != -1) {
GST_LOG_OBJECT (parse, "converting provided duration");
res = klass->convert (parse, parse->priv->duration_fmt,
parse->priv->duration, format, (gint64 *) duration);
} else if (format == GST_FORMAT_TIME && parse->priv->estimated_duration != -1) {
GST_LOG_OBJECT (parse, "using estimated duration");
*duration = parse->priv->estimated_duration;
res = TRUE;
}
GST_LOG_OBJECT (parse, "res: %d, duration %" GST_TIME_FORMAT, res,
GST_TIME_ARGS (*duration));
return res;
}
/**
* gst_base_parse_get_querytypes:
* @pad: GstPad
@ -1900,6 +1929,8 @@ gst_base_parse_query (GstPad * pad, GstQuery * query)
return FALSE;
}
GST_LOG_OBJECT (parse, "handling query: %" GST_PTR_FORMAT, query);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
@ -1907,11 +1938,9 @@ gst_base_parse_query (GstPad * pad, GstQuery * query)
GstFormat format;
GST_DEBUG_OBJECT (parse, "position query");
gst_query_parse_position (query, &format, NULL);
g_mutex_lock (parse->parse_lock);
if (format == GST_FORMAT_BYTES) {
dest_value = parse->priv->offset;
res = TRUE;
@ -1919,84 +1948,92 @@ gst_base_parse_query (GstPad * pad, GstQuery * query)
GST_CLOCK_TIME_IS_VALID (parse->segment.last_stop)) {
dest_value = parse->segment.last_stop;
res = TRUE;
} else {
/* priv->offset is updated in both PUSH/PULL modes */
res = klass->convert (parse, GST_FORMAT_BYTES, parse->priv->offset,
format, &dest_value);
}
g_mutex_unlock (parse->parse_lock);
if (res)
gst_query_set_position (query, format, dest_value);
else
else {
res = gst_pad_query_default (pad, query);
if (!res) {
/* no precise result, upstream no idea either, then best estimate */
/* priv->offset is updated in both PUSH/PULL modes */
g_mutex_lock (parse->parse_lock);
res = klass->convert (parse, GST_FORMAT_BYTES, parse->priv->offset,
format, &dest_value);
g_mutex_unlock (parse->parse_lock);
}
}
break;
}
case GST_QUERY_DURATION:
{
GstFormat format;
gint64 dest_value;
GstClockTime duration;
GST_DEBUG_OBJECT (parse, "duration query");
gst_query_parse_duration (query, &format, NULL);
g_mutex_lock (parse->parse_lock);
if (format == GST_FORMAT_BYTES) {
res = gst_pad_query_peer_duration (parse->sinkpad, &format,
&dest_value);
} else if (parse->priv->duration != -1 &&
format == parse->priv->duration_fmt) {
dest_value = parse->priv->duration;
res = TRUE;
} else if (parse->priv->duration != -1) {
res = klass->convert (parse, parse->priv->duration_fmt,
parse->priv->duration, format, &dest_value);
} else if (parse->priv->estimated_duration != -1) {
dest_value = parse->priv->estimated_duration;
res = TRUE;
}
g_mutex_unlock (parse->parse_lock);
if (res)
gst_query_set_duration (query, format, dest_value);
else
/* consult upstream */
res = gst_pad_query_default (pad, query);
/* otherwise best estimate from us */
if (!res) {
g_mutex_lock (parse->parse_lock);
res = gst_base_parse_get_duration (parse, format, &duration);
g_mutex_unlock (parse->parse_lock);
if (res)
gst_query_set_duration (query, format, duration);
}
break;
}
case GST_QUERY_SEEKING:
{
GstFormat fmt;
GstClockTime duration = GST_CLOCK_TIME_NONE;
gboolean seekable = FALSE;
GST_DEBUG_OBJECT (parse, "seeking query");
gst_query_parse_seeking (query, &fmt, NULL, NULL, NULL);
if (fmt != GST_FORMAT_TIME) {
return gst_pad_query_default (pad, query);
/* consult upstream */
res = gst_pad_query_default (pad, query);
/* we may be able to help if in TIME */
if (fmt == GST_FORMAT_TIME && klass->is_seekable (parse)) {
gst_query_parse_seeking (query, &fmt, &seekable, NULL, NULL);
/* already OK if upstream takes care */
GST_LOG_OBJECT (parse, "upstream handled %d, seekable %d",
res, seekable);
if (!(res && seekable)) {
/* TODO maybe also check upstream provides proper duration ? */
seekable = TRUE;
if (!gst_base_parse_get_duration (parse, GST_FORMAT_TIME, &duration)
|| duration == -1) {
seekable = FALSE;
} else {
GstQuery *q;
q = gst_query_new_seeking (GST_FORMAT_BYTES);
if (!gst_pad_peer_query (parse->sinkpad, q)) {
seekable = FALSE;
} else {
gst_query_parse_seeking (q, &fmt, &seekable, NULL, NULL);
}
seekable = klass->is_seekable (parse);
/* TODO: could this duration be calculated/converted if subclass
hasn't given it? */
gst_query_set_seeking (query, GST_FORMAT_TIME, seekable, 0,
(parse->priv->duration == -1) ?
GST_CLOCK_TIME_NONE : parse->priv->duration);
GST_DEBUG_OBJECT (parse, "seekable: %d", seekable);
GST_LOG_OBJECT (parse, "upstream BYTE handled %d, seekable %d",
res, seekable);
gst_query_unref (q);
}
gst_query_set_seeking (query, GST_FORMAT_TIME, seekable, 0, duration);
res = TRUE;
}
}
break;
}
case GST_QUERY_FORMATS:
gst_query_set_formatsv (query, 3, fmtlist);
res = TRUE;
break;
case GST_QUERY_CONVERT:
{
GstFormat src_format, dest_format;
@ -2005,16 +2042,12 @@ gst_base_parse_query (GstPad * pad, GstQuery * query)
gst_query_parse_convert (query, &src_format, &src_value,
&dest_format, &dest_value);
/* FIXME: hm? doesn't make sense
* We require all those values to be given
if (src_format && src_value && dest_format && dest_value ) { */
res = klass->convert (parse, src_format, src_value,
dest_format, &dest_value);
if (res) {
gst_query_set_convert (query, src_format, src_value,
dest_format, dest_value);
}
/*} */
break;
}
default: