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basesink: add framestepping in time

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Wim Taymans 2009-05-15 15:25:06 +02:00 committed by Wim Taymans
parent 2f6439dfde
commit 1839782379
1 changed files with 36 additions and 14 deletions
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50
libs/gst/base/gstbasesink.c
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@ -158,7 +158,7 @@ typedef struct
guint32 seqnum; /* the seqnum of the STEP event */
GstFormat format; /* the format of the amount */
guint64 amount; /* the total amount of data to skip */
guint64 remaining; /* the remaining amount of data to skip */
guint64 position; /* the position in the stepped data */
guint64 duration; /* the duration in time of the skipped data */
guint64 start; /* running_time of the start */
gdouble rate; /* rate of skipping */
@ -1512,8 +1512,9 @@ stop_stepping (GstBaseSink * sink, GstSegment * segment,
GST_DEBUG_OBJECT (sink, "step complete");
GST_DEBUG_OBJECT (sink, "step stop at running_time %" GST_TIME_FORMAT,
GST_TIME_ARGS (*rstart));
GST_DEBUG_OBJECT (sink,
"step stop at running_time %" GST_TIME_FORMAT ", timestamp %"
GST_TIME_FORMAT, GST_TIME_ARGS (*rstart), GST_TIME_ARGS (cstart));
/* configure the duration of the elapsed segment */
current->duration = *rstart - current->start;
@ -1523,8 +1524,14 @@ stop_stepping (GstBaseSink * sink, GstSegment * segment,
/* update the segment, discarding what was consumed, running time goes
* backwards with the duration of the data we skipped. FIXME, this only works
* in PAUSED. */
segment->time = gst_segment_to_stream_time (segment, segment->format, cstart);
segment->start = cstart;
*rstart -= current->duration;
segment->accum = current->start;
/* the clip segment is used for position report in paused... */
memcpy (sink->abidata.ABI.clip_segment, segment, sizeof (GstSegment));
*rstart = current->start;
*rstop -= current->duration;
message =
@ -1542,7 +1549,8 @@ stop_stepping (GstBaseSink * sink, GstSegment * segment,
static gboolean
handle_stepping (GstBaseSink * sink, GstSegment * segment,
GstStepInfo * current)
GstStepInfo * current, gint64 * cstart, gint64 * cstop, gint64 * rstart,
gint64 * rstop)
{
GstBaseSinkPrivate *priv;
gboolean step_end = FALSE;
@ -1552,17 +1560,31 @@ handle_stepping (GstBaseSink * sink, GstSegment * segment,
/* see if we need to skip this buffer because of stepping */
switch (current->format) {
case GST_FORMAT_TIME:
{
guint64 end;
end = current->start + current->amount;
current->position = *rstart - current->start;
GST_DEBUG_OBJECT (sink,
"got time step %" GST_TIME_FORMAT "/%" GST_TIME_FORMAT,
GST_TIME_ARGS (current->remaining), GST_TIME_ARGS (current->amount));
GST_TIME_ARGS (current->position), GST_TIME_ARGS (current->amount));
if (current->position >= current->amount || *rstop >= end) {
step_end = TRUE;
*cstart += end - *rstart;
*rstart = end;
}
break;
}
case GST_FORMAT_BUFFERS:
GST_DEBUG_OBJECT (sink,
"got default step %" G_GUINT64_FORMAT "/%" G_GUINT64_FORMAT,
current->remaining, current->amount);
current->position, current->amount);
if (current->remaining > 0) {
current->remaining--;
if (current->position < current->amount) {
current->position++;
} else {
step_end = TRUE;
}
@ -1571,7 +1593,7 @@ handle_stepping (GstBaseSink * sink, GstSegment * segment,
default:
GST_DEBUG_OBJECT (sink,
"got unknown step %" G_GUINT64_FORMAT "/%" G_GUINT64_FORMAT,
current->remaining, current->amount);
current->position, current->amount);
break;
}
return step_end;
@ -1711,15 +1733,15 @@ do_times:
rstop = gst_segment_to_running_time (segment, format, cstop);
if (G_UNLIKELY (step->valid)) {
if (!(step_end = handle_stepping (basesink, segment, step)))
if (!(step_end = handle_stepping (basesink, segment, step, &cstart, &cstop,
&rstart, &rstop)))
*stepped = TRUE;
}
eos_done:
/* done label only called when doing EOS, we also stop stepping then */
if (step_end)
stop_stepping (basesink, segment, &priv->current_step, cstart, cstop,
&rstart, &rstop);
stop_stepping (basesink, segment, step, cstart, cstop, &rstart, &rstop);
/* save times */
*rsstart = sstart;
@ -3368,7 +3390,7 @@ gst_base_sink_perform_step (GstBaseSink * sink, GstPad * pad, GstEvent * event)
priv->pending_step.seqnum = seqnum;
priv->pending_step.format = format;
priv->pending_step.amount = amount;
priv->pending_step.remaining = amount;
priv->pending_step.position = 0;
priv->pending_step.rate = rate;
priv->pending_step.intermediate = intermediate;
priv->pending_step.valid = TRUE;