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queue2: Fix a special case during range management

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When a range contained no data, if it was new or newly empty, it would
be mishandled if it were the current range.
This commit is contained in:
Robert Swain 2010-07-07 08:20:21 +02:00 committed by Wim Taymans
parent 414911b90a
commit dec12cb2b8
1 changed files with 22 additions and 9 deletions
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31
plugins/elements/gstqueue2.c
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@ -493,9 +493,12 @@ debug_ranges (GstQueue2 * queue)
GstQueue2Range *walk;
for (walk = queue->ranges; walk; walk = walk->next) {
GST_DEBUG_OBJECT (queue, "range %" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT
", reading %" G_GUINT64_FORMAT, walk->offset, walk->writing_pos,
walk->reading_pos);
GST_DEBUG_OBJECT (queue,
"range [%" G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT "] (rb [%"
G_GUINT64_FORMAT "-%" G_GUINT64_FORMAT "]), reading %" G_GUINT64_FORMAT
" current range? %s", walk->offset, walk->writing_pos, walk->rb_offset,
walk->rb_writing_pos, walk->reading_pos,
walk == queue->current ? "**y**" : " n ");
}
}
@ -1170,8 +1173,8 @@ gst_queue2_create_read (GstQueue2 * queue, guint64 offset, guint length,
/* we don't have the data but if we have a ring buffer that is full, we
* need to read */
GST_DEBUG_OBJECT (queue,
"ring buffer full, reading ring-buffer-max-size %d bytes",
rb_size);
"ring buffer full, reading ring-buffer-max-size %"
G_GUINT64_FORMAT " bytes", rb_size);
read_length = rb_size;
} else if (queue->is_eos) {
/* won't get any more data so read any data we have */
@ -1536,13 +1539,23 @@ gst_queue2_create_write (GstQueue2 * queue, GstBuffer * buffer)
guint64 range_data_start, range_data_end;
GstQueue2Range *range_to_destroy = NULL;
/* we don't edit the current range here */
if (range == queue->current)
goto next_range;
range_data_start = range->rb_offset;
range_data_end = range->rb_writing_pos;
/* handle the special case where the range has no data in it */
if (range->writing_pos == range->offset) {
if (range != queue->current) {
GST_DEBUG_OBJECT (queue,
"Removing range: offset %" G_GUINT64_FORMAT ", wpos %"
G_GUINT64_FORMAT, range->offset, range->writing_pos);
/* remove range */
range_to_destroy = range;
if (prev)
prev->next = range->next;
}
goto next_range;
}
if (range_data_end > range_data_start) {
if (writing_pos >= range_data_end && new_writing_pos >= writing_pos)
goto next_range;