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signalprocessor: use the gst-controller, add some basic timestamping

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Atleast for FX we now have timestamps and can sync the controller. Still need
timestamps for sources.
This commit is contained in:
Stefan Kost 2010-01-31 22:16:18 +02:00
parent b3ac421b96
commit 6bff8711d0
2 changed files with 53 additions and 3 deletions
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11
gst-libs/gst/signalprocessor/Makefile.am
View file

@ -4,7 +4,12 @@ libgstsignalprocessor_@GST_MAJORMINOR@includedir = $(includedir)/gstreamer-@GST_
libgstsignalprocessor_@GST_MAJORMINOR@include_HEADERS = gstsignalprocessor.h
libgstsignalprocessor_@GST_MAJORMINOR@_la_SOURCES = gstsignalprocessor.c
libgstsignalprocessor_@GST_MAJORMINOR@_la_CFLAGS = $(GST_PLUGINS_BASE_CFLAGS) $(GST_CFLAGS)
libgstsignalprocessor_@GST_MAJORMINOR@_la_LIBADD = $(GST_PLUGINS_BASE_LIBS) $(GST_LIBS) -lgstaudio-@GST_MAJORMINOR@
libgstsignalprocessor_@GST_MAJORMINOR@_la_LDFLAGS = $(GST_LIB_LDFLAGS) $(GST_ALL_LDFLAGS) $(GST_LT_LDFLAGS)
libgstsignalprocessor_@GST_MAJORMINOR@_la_CFLAGS = \
$(GST_PLUGINS_BASE_CFLAGS) \
$(GST_CONTROLLER_CFLAGS) $(GST_CFLAGS)
libgstsignalprocessor_@GST_MAJORMINOR@_la_LIBADD = \
$(GST_PLUGINS_BASE_LIBS) -lgstaudio-@GST_MAJORMINOR@ \
$(GST_CONTROLLER_LIBS) $(GST_LIBS)
libgstsignalprocessor_@GST_MAJORMINOR@_la_LDFLAGS = \
$(GST_LIB_LDFLAGS) $(GST_ALL_LDFLAGS) $(GST_LT_LDFLAGS)

45
gst-libs/gst/signalprocessor/gstsignalprocessor.c
View file

@ -44,6 +44,7 @@
#include <stdlib.h>
#include <string.h>
#include <gst/controller/gstcontroller.h>
#include <gst/audio/audio.h>
#include "gstsignalprocessor.h"
@ -576,6 +577,15 @@ gst_signal_processor_event (GstPad * pad, GstEvent * event)
return ret;
}
/*
* gst_signal_processor_prepare:
* @self: the element
* nframes: wanted sample frames
*
* Checks if wan
*
* Returns: available sample frames
*/
static guint
gst_signal_processor_prepare (GstSignalProcessor * self, guint nframes)
{
@ -584,6 +594,8 @@ gst_signal_processor_prepare (GstSignalProcessor * self, guint nframes)
GList *sinks, *srcs;
guint samples_avail = nframes;
guint i, in_group_index = 0, out_group_index = 0;
gboolean is_gap = FALSE;
GstClockTime ts, tss = GST_CLOCK_TIME_NONE, tse = GST_CLOCK_TIME_NONE;
klass = GST_SIGNAL_PROCESSOR_GET_CLASS (self);
@ -617,8 +629,32 @@ gst_signal_processor_prepare (GstSignalProcessor * self, guint nframes)
}
}
GST_LOG_OBJECT (self, "want %u samples, have %u samples", nframes,
samples_avail);
/* FIXME: return if samples_avail==0 ? */
if ((sinks = elem->sinkpads)) {
is_gap = TRUE;
while (sinks) {
GstSignalProcessorPad *sinkpad = (GstSignalProcessorPad *) sinks->data;
is_gap &= GST_BUFFER_FLAG_IS_SET (sinkpad->pen, GST_BUFFER_FLAG_GAP);
ts = GST_BUFFER_TIMESTAMP (sinkpad->pen);
if (GST_CLOCK_TIME_IS_VALID (ts)) {
tss = !GST_CLOCK_TIME_IS_VALID (tss) ? ts : MIN (tss, ts);
tse = !GST_CLOCK_TIME_IS_VALID (tse) ? ts : MAX (tse, ts);
}
sinks = sinks->next;
}
ts = (tss == tse) ? tss : GST_CLOCK_TIME_NONE;
GST_LOG_OBJECT (self, "is gap: %d, tss %" GST_TIME_FORMAT ", tse %"
GST_TIME_FORMAT, is_gap, GST_TIME_ARGS (tss), GST_TIME_ARGS (tse));
} else {
/* FIXME: calculate own timestamps */
ts = GST_CLOCK_TIME_NONE;
}
/* now assign output buffers. we can avoid allocation by reusing input
buffers, but only if process() can work in place, and if the input buffer
is the exact size of the number of samples we are processing. */
@ -682,9 +718,18 @@ gst_signal_processor_prepare (GstSignalProcessor * self, guint nframes)
self->pending_out++;
}
/* set time stamp */
GST_BUFFER_TIMESTAMP (srcpad->pen) = ts;
/* FIXME: handle gap flag ? */
srcs = srcs->next;
}
/* update controlled parameters */
if (samples_avail && GST_CLOCK_TIME_IS_VALID (ts)) {
gst_object_sync_values ((GObject *) self, ts);
}
return samples_avail;
}