gstreamer/libs/gst/check/gstconsistencychecker.c

290 lines
9.1 KiB
C

/* GStreamer
*
* unit testing helper lib
*
* Copyright (C) 2009 Edward Hervey <bilboed@bilboed.com>
* Copyright (C) 2012 Stefan Sauer <ensonic@users.sf.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:gstcheckconsistencychecker
* @short_description: Data flow consistency checker for GStreamer unit tests.
*
* These macros and functions are for internal use of the unit tests found
* inside the 'check' directories of various GStreamer packages.
*/
#include "gstconsistencychecker.h"
struct _GstStreamConsistency
{
/* FIXME: do we want to track some states per pad? */
volatile gboolean flushing;
volatile gboolean segment;
volatile gboolean eos;
volatile gboolean expect_flush;
volatile gboolean saw_serialized_event;
volatile gboolean saw_stream_start;
GstObject *parent;
GList *pads;
};
typedef struct _GstStreamConsistencyProbe
{
GstPad *pad;
gulong probeid;
} GstStreamConsistencyProbe;
static gboolean
source_pad_data_cb (GstPad * pad, GstPadProbeInfo * info,
GstStreamConsistency * consist)
{
GstMiniObject *data = GST_PAD_PROBE_INFO_DATA (info);
GST_DEBUG_OBJECT (pad, "%p: %d %d %d %d", consist, consist->flushing,
consist->segment, consist->eos, consist->expect_flush);
if (GST_IS_BUFFER (data)) {
GST_DEBUG_OBJECT (pad,
"Buffer pts %" GST_TIME_FORMAT ", dts %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_PTS (GST_BUFFER_CAST (data))),
GST_TIME_ARGS (GST_BUFFER_DTS (GST_BUFFER_CAST (data))));
/* If an EOS went through, a buffer would be invalid */
fail_if (consist->eos, "Buffer received after EOS");
/* Buffers need to be preceded by a segment event */
fail_unless (consist->segment, "Buffer received without segment");
} else if (GST_IS_EVENT (data)) {
GstEvent *event = (GstEvent *) data;
GST_DEBUG_OBJECT (pad, "Event : %s", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
/* getting two flush_start in a row seems to be okay
fail_if (consist->flushing, "Received another FLUSH_START");
*/
consist->flushing = TRUE;
break;
case GST_EVENT_FLUSH_STOP:
/* Receiving a flush-stop is only valid after receiving a flush-start */
fail_unless (consist->flushing,
"Received a FLUSH_STOP without a FLUSH_START");
fail_if (consist->eos, "Received a FLUSH_STOP after an EOS");
consist->flushing = consist->expect_flush = FALSE;
break;
case GST_EVENT_STREAM_START:
fail_if (consist->saw_serialized_event && !consist->saw_stream_start,
"Got a STREAM_START event after a serialized event");
consist->saw_stream_start = TRUE;
break;
case GST_EVENT_STREAM_CONFIG:
case GST_EVENT_CAPS:
/* ok to have these before segment event */
/* FIXME check order more precisely, if so spec'ed somehow ? */
break;
case GST_EVENT_SEGMENT:
fail_if ((consist->expect_flush && consist->flushing),
"Received SEGMENT while in a flushing seek");
consist->segment = TRUE;
consist->eos = FALSE;
break;
case GST_EVENT_EOS:
/* FIXME : not 100% sure about whether two eos in a row is valid */
fail_if (consist->eos, "Received EOS just after another EOS");
consist->eos = TRUE;
consist->segment = FALSE;
break;
case GST_EVENT_TAG:
GST_DEBUG_OBJECT (pad, "tag %" GST_PTR_FORMAT,
gst_event_get_structure (event));
/* fall through */
default:
if (GST_EVENT_IS_SERIALIZED (event) && GST_EVENT_IS_DOWNSTREAM (event)) {
fail_if (consist->eos, "Event received after EOS");
fail_unless (consist->segment, "Event received before segment");
}
/* FIXME : Figure out what to do for other events */
break;
}
if (GST_EVENT_IS_SERIALIZED (event)) {
fail_if (!consist->saw_stream_start
&& GST_EVENT_TYPE (event) != GST_EVENT_STREAM_START,
"Got a serialized event (%s) before a STREAM_START",
GST_EVENT_TYPE_NAME (event));
consist->saw_serialized_event = TRUE;
}
}
return TRUE;
}
static gboolean
sink_pad_data_cb (GstPad * pad, GstPadProbeInfo * info,
GstStreamConsistency * consist)
{
GstMiniObject *data = GST_PAD_PROBE_INFO_DATA (info);
GST_DEBUG_OBJECT (pad, "%p: %d %d %d %d", consist, consist->flushing,
consist->segment, consist->eos, consist->expect_flush);
if (GST_IS_BUFFER (data)) {
GST_DEBUG_OBJECT (pad, "Buffer %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (GST_BUFFER (data))));
/* If an EOS went through, a buffer would be invalid */
fail_if (consist->eos, "Buffer received after EOS");
/* Buffers need to be preceded by a segment event */
fail_unless (consist->segment, "Buffer received without segment");
} else if (GST_IS_EVENT (data)) {
GstEvent *event = (GstEvent *) data;
GST_DEBUG_OBJECT (pad, "%s", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
GstSeekFlags flags;
gst_event_parse_seek (event, NULL, NULL, &flags, NULL, NULL, NULL,
NULL);
consist->expect_flush =
((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
break;
}
case GST_EVENT_SEGMENT:
fail_if ((consist->expect_flush && consist->flushing),
"Received SEGMENT while in a flushing seek");
consist->segment = TRUE;
consist->eos = FALSE;
break;
default:
/* FIXME : Figure out what to do for other events */
break;
}
}
return TRUE;
}
static void
add_pad (GstStreamConsistency * consist, GstPad * pad)
{
GstStreamConsistencyProbe *p;
GstPadDirection dir;
p = g_new0 (GstStreamConsistencyProbe, 1);
p->pad = g_object_ref (pad);
dir = gst_pad_get_direction (pad);
if (dir == GST_PAD_SRC) {
p->probeid =
gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_DATA_DOWNSTREAM,
(GstPadProbeCallback) source_pad_data_cb, consist, NULL);
} else if (dir == GST_PAD_SINK) {
p->probeid =
gst_pad_add_probe (pad, GST_PAD_PROBE_TYPE_DATA_DOWNSTREAM,
(GstPadProbeCallback) sink_pad_data_cb, consist, NULL);
}
consist->pads = g_list_prepend (consist->pads, p);
}
/**
* gst_consistency_checker_new:
* @pad: The #GstPad on which the dataflow will be checked.
*
* Sets up a data probe on the given pad which will raise assertions if the
* data flow is inconsistent.
*
* Returns: A #GstStreamConsistency structure used to track data flow.
*/
GstStreamConsistency *
gst_consistency_checker_new (GstPad * pad)
{
GstStreamConsistency *consist;
g_return_val_if_fail (pad != NULL, NULL);
consist = g_new0 (GstStreamConsistency, 1);
if (!consist->pads) {
consist->parent = GST_OBJECT_PARENT (pad);
}
add_pad (consist, pad);
return consist;
}
/**
* gst_consistency_checker_add_pad:
* @consist: The #GstStreamConsistency handle
* @pad: The #GstPad on which the dataflow will be checked.
*
* Sets up a data probe on the given pad which will raise assertions if the
* data flow is inconsistent.
*
* Returns: %TRUE if the pad was added
*/
gboolean
gst_consistency_checker_add_pad (GstStreamConsistency * consist, GstPad * pad)
{
g_return_val_if_fail (consist != NULL, FALSE);
g_return_val_if_fail (pad != NULL, FALSE);
g_return_val_if_fail (GST_OBJECT_PARENT (pad) == consist->parent, FALSE);
add_pad (consist, pad);
return TRUE;
}
/**
* gst_consistency_checker_reset:
* @consist: The #GstStreamConsistency to reset.
*
* Reset the stream checker's internal variables.
*/
void
gst_consistency_checker_reset (GstStreamConsistency * consist)
{
consist->flushing = FALSE;
consist->segment = FALSE;
consist->eos = FALSE;
consist->expect_flush = FALSE;
consist->saw_serialized_event = FALSE;
consist->saw_stream_start = FALSE;
}
/**
* gst_consistency_checker_free:
* @consist: The #GstStreamConsistency to free.
*
* Frees the allocated data and probes associated with @consist.
*/
void
gst_consistency_checker_free (GstStreamConsistency * consist)
{
GList *node;
GstStreamConsistencyProbe *p;
/* Remove the data probes */
for (node = consist->pads; node; node = g_list_next (node)) {
p = (GstStreamConsistencyProbe *) node->data;
gst_pad_remove_probe (p->pad, p->probeid);
gst_object_unref (p->pad);
g_free (p);
}
g_list_free (consist->pads);
g_free (consist);
}