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Keep track of essence track position when playing source packages

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This ensures that the correct essence elements are played and
that we seek to the correct essence elements.
This commit is contained in:
Sebastian Dröge 2009-01-29 19:58:50 +01:00
parent dfa0e43848
commit 707136fe5d
2 changed files with 16 additions and 20 deletions
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34
gst/mxf/mxfdemux.c
View file

@ -1001,7 +1001,7 @@ gst_mxf_demux_update_tracks (GstMXFDemux * demux)
} else {
pad->current_component_start += component->start_position;
}
pad->current_component_position = pad->current_component_start;
pad->current_essence_track_position = pad->current_component_start;
}
/* NULL iff playing a source package */
@ -1332,7 +1332,7 @@ gst_mxf_demux_pad_next_component (GstMXFDemux * demux, GstMXFDemuxPad * pad)
} else {
pad->current_component_start += pad->current_component->start_position;
}
pad->current_component_position = pad->current_component_start;
pad->current_essence_track_position = pad->current_component_start;
if (!gst_caps_is_equal (GST_PAD_CAPS (pad), pad->current_essence_track->caps)) {
@ -1501,8 +1501,8 @@ gst_mxf_demux_handle_generic_container_essence_element (GstMXFDemux * demux,
GST_DEBUG_OBJECT (demux, "Pad is already EOS");
continue;
}
if (pad->current_component &&
etrack->position != pad->current_component_position) {
if (etrack->position != pad->current_essence_track_position) {
GST_DEBUG_OBJECT (demux, "Not at current component's position");
continue;
}
@ -1584,11 +1584,11 @@ gst_mxf_demux_handle_generic_container_essence_element (GstMXFDemux * demux,
if (ret != GST_FLOW_OK)
break;
if (pad->current_component) {
pad->current_component_position++;
pad->current_essence_track_position++;
if (pad->current_component->parent.duration >= 0 &&
pad->current_component_position - pad->current_component_start
if (pad->current_component) {
if (pad->current_component->parent.duration > 0 &&
pad->current_essence_track_position - pad->current_component_start
>= pad->current_component->parent.duration) {
GST_DEBUG_OBJECT (demux, "Switching to next component");
@ -1597,18 +1597,18 @@ gst_mxf_demux_handle_generic_container_essence_element (GstMXFDemux * demux,
GST_ERROR_OBJECT (demux, "Switching component failed");
}
} else if (etrack->duration > 0
&& pad->current_component_position >= etrack->duration) {
&& pad->current_essence_track_position >= etrack->duration) {
GST_ERROR_OBJECT (demux,
"Current component position after end of essence track");
ret = GST_FLOW_UNEXPECTED;
}
} else if (etrack->duration > 0 && etrack->position + 1 == etrack->duration) {
} else if (etrack->duration > 0
&& pad->current_essence_track_position == etrack->duration) {
GST_DEBUG_OBJECT (demux, "At the end of the essence track");
ret = GST_FLOW_UNEXPECTED;
}
if (ret == GST_FLOW_UNEXPECTED) {
GST_DEBUG_OBJECT (demux, "EOS for track");
pad->eos = TRUE;
gst_pad_push_event (GST_PAD_CAST (pad), gst_event_new_eos ());
@ -2316,10 +2316,7 @@ gst_mxf_demux_pull_and_handle_klv_packet (GstMXFDemux * demux)
guint64 offset;
gint64 position;
if (p->current_component)
position = p->current_component_position;
else
position = p->current_essence_track->position;
position = p->current_essence_track_position;
offset =
gst_mxf_demux_find_essence_element (demux, p->current_essence_track,
@ -2340,6 +2337,7 @@ gst_mxf_demux_pull_and_handle_klv_packet (GstMXFDemux * demux)
i);
etrack->position = -1;
}
p->current_essence_track->position = position;
ret = GST_FLOW_OK;
goto beach;
@ -2376,10 +2374,7 @@ gst_mxf_demux_pull_and_handle_klv_packet (GstMXFDemux * demux)
GST_WARNING_OBJECT (demux,
"Found synchronization issue -- trying to solve");
if (earliest->current_component)
position = earliest->current_component_position;
else
position = earliest->current_essence_track->position;
position = earliest->current_essence_track_position;
/* FIXME: This can probably be improved by using the
* offset of position-1 if it's in the same partition
@ -2406,6 +2401,7 @@ gst_mxf_demux_pull_and_handle_klv_packet (GstMXFDemux * demux)
etrack->position = -1;
}
earliest->current_essence_track->position = position;
}
beach:

2
gst/mxf/mxfdemux.h
View file

@ -106,9 +106,9 @@ struct _GstMXFDemuxPad
MXFMetadataSourceClip *current_component;
gint64 current_component_start;
gint64 current_component_position;
GstMXFDemuxEssenceTrack *current_essence_track;
gint64 current_essence_track_position;
};
struct _GstMXFDemuxPadClass