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268 lines
8 KiB
C
268 lines
8 KiB
C
/* GStreamer
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*
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* unit testing helper lib
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*
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* Copyright (C) 2009 Edward Hervey <bilboed@bilboed.com>
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* Copyright (C) 2012 Stefan Sauer <ensonic@users.sf.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/**
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* SECTION:gstcheckconsistencychecker
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* @short_description: Data flow consistency checker for GStreamer unit tests.
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*
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* These macros and functions are for internal use of the unit tests found
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* inside the 'check' directories of various GStreamer packages.
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*
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* Since: 0.10.24
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*/
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#include "gstconsistencychecker.h"
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struct _GstStreamConsistency
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{
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/* FIXME: do we want to track some states per pad? */
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volatile gboolean flushing;
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volatile gboolean newsegment;
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volatile gboolean eos;
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volatile gboolean expect_flush;
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GstObject *parent;
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GList *pads;
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};
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typedef struct _GstStreamConsistencyProbe
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{
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GstPad *pad;
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gulong probeid;
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} GstStreamConsistencyProbe;
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static gboolean
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source_pad_data_cb (GstPad * pad, GstMiniObject * data,
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GstStreamConsistency * consist)
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{
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GST_DEBUG_OBJECT (pad, "%p: %d %d %d %d", consist, consist->flushing,
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consist->newsegment, consist->eos, consist->expect_flush);
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if (GST_IS_BUFFER (data)) {
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GST_DEBUG_OBJECT (pad, "Buffer %" GST_TIME_FORMAT,
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (GST_BUFFER (data))));
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/* If an EOS went through, a buffer would be invalid */
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fail_if (consist->eos, "Buffer received after EOS");
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/* Buffers need to be preceded by a newsegment event */
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fail_unless (consist->newsegment, "Buffer received without newsegment");
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} else if (GST_IS_EVENT (data)) {
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GstEvent *event = (GstEvent *) data;
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GST_DEBUG_OBJECT (pad, "%s", GST_EVENT_TYPE_NAME (event));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_FLUSH_START:
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/* getting two flush_start in a row seems to be okay
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fail_if (consist->flushing, "Received another FLUSH_START");
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*/
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consist->flushing = TRUE;
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break;
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case GST_EVENT_FLUSH_STOP:
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/* Receiving a flush-stop is only valid after receiving a flush-start */
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fail_unless (consist->flushing,
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"Received a FLUSH_STOP without a FLUSH_START");
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fail_if (consist->eos, "Received a FLUSH_STOP after an EOS");
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consist->flushing = consist->expect_flush = FALSE;
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break;
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case GST_EVENT_NEWSEGMENT:
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fail_if ((consist->expect_flush && consist->flushing),
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"Received NEWSEGMENT while in a flushing seek");
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consist->newsegment = TRUE;
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consist->eos = FALSE;
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break;
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case GST_EVENT_EOS:
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/* FIXME : not 100% sure about whether two eos in a row is valid */
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fail_if (consist->eos, "Received EOS just after another EOS");
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consist->eos = TRUE;
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consist->newsegment = FALSE;
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break;
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case GST_EVENT_TAG:
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GST_DEBUG_OBJECT (pad, "tag %" GST_PTR_FORMAT, event->structure);
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/* fall through */
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default:
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if (GST_EVENT_IS_SERIALIZED (event) && GST_EVENT_IS_DOWNSTREAM (event)) {
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fail_if (consist->eos, "Event received after EOS");
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fail_unless (consist->newsegment, "Event received before newsegment");
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}
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/* FIXME : Figure out what to do for other events */
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break;
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}
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}
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return TRUE;
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}
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static gboolean
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sink_pad_data_cb (GstPad * pad, GstMiniObject * data,
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GstStreamConsistency * consist)
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{
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GST_DEBUG_OBJECT (pad, "%p: %d %d %d %d", consist, consist->flushing,
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consist->newsegment, consist->eos, consist->expect_flush);
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if (GST_IS_BUFFER (data)) {
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GST_DEBUG_OBJECT (pad, "Buffer %" GST_TIME_FORMAT,
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (GST_BUFFER (data))));
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/* If an EOS went through, a buffer would be invalid */
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fail_if (consist->eos, "Buffer received after EOS");
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/* Buffers need to be preceded by a newsegment event */
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fail_unless (consist->newsegment, "Buffer received without newsegment");
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} else if (GST_IS_EVENT (data)) {
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GstEvent *event = (GstEvent *) data;
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GST_DEBUG_OBJECT (pad, "%s", GST_EVENT_TYPE_NAME (event));
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switch (GST_EVENT_TYPE (event)) {
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case GST_EVENT_SEEK:
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{
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GstSeekFlags flags;
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gst_event_parse_seek (event, NULL, NULL, &flags, NULL, NULL, NULL,
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NULL);
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consist->expect_flush =
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((flags & GST_SEEK_FLAG_FLUSH) == GST_SEEK_FLAG_FLUSH);
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break;
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}
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case GST_EVENT_NEWSEGMENT:
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fail_if ((consist->expect_flush && consist->flushing),
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"Received NEWSEGMENT while in a flushing seek");
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consist->newsegment = TRUE;
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consist->eos = FALSE;
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break;
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default:
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/* FIXME : Figure out what to do for other events */
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break;
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}
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}
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return TRUE;
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}
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static void
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add_pad (GstStreamConsistency * consist, GstPad * pad)
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{
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GstStreamConsistencyProbe *p;
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GstPadDirection dir;
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p = g_new0 (GstStreamConsistencyProbe, 1);
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p->pad = g_object_ref (pad);
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dir = gst_pad_get_direction (pad);
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if (dir == GST_PAD_SRC) {
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p->probeid =
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gst_pad_add_data_probe (pad, (GCallback) source_pad_data_cb, consist);
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} else if (dir == GST_PAD_SINK) {
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p->probeid =
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gst_pad_add_data_probe (pad, (GCallback) sink_pad_data_cb, consist);
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}
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consist->pads = g_list_prepend (consist->pads, p);
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}
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/**
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* gst_consistency_checker_new:
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* @pad: The #GstPad on which the dataflow will be checked.
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*
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* Sets up a data probe on the given pad which will raise assertions if the
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* data flow is inconsistent.
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*
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* Returns: A #GstStreamConsistency structure used to track data flow.
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*
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* Since: 0.10.24
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*/
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GstStreamConsistency *
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gst_consistency_checker_new (GstPad * pad)
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{
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GstStreamConsistency *consist;
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g_return_val_if_fail (pad != NULL, NULL);
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consist = g_new0 (GstStreamConsistency, 1);
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if (!consist->pads) {
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consist->parent = GST_OBJECT_PARENT (pad);
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}
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add_pad (consist, pad);
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return consist;
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}
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/**
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* gst_consistency_checker_add_pad:
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* @consist: The #GstStreamConsistency handle
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* @pad: The #GstPad on which the dataflow will be checked.
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*
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* Sets up a data probe on the given pad which will raise assertions if the
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* data flow is inconsistent.
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*
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* Returns: %TRUE if the pad was added
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*
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* Since: 0.10.37
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*/
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gboolean
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gst_consistency_checker_add_pad (GstStreamConsistency * consist, GstPad * pad)
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{
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g_return_val_if_fail (consist != NULL, FALSE);
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g_return_val_if_fail (pad != NULL, FALSE);
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g_return_val_if_fail (GST_OBJECT_PARENT (pad) == consist->parent, FALSE);
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add_pad (consist, pad);
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return TRUE;
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}
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/**
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* gst_consistency_checker_reset:
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* @consist: The #GstStreamConsistency to reset.
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*
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* Reset the stream checker's internal variables.
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*
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* Since: 0.10.24
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*/
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void
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gst_consistency_checker_reset (GstStreamConsistency * consist)
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{
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consist->eos = FALSE;
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consist->flushing = FALSE;
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consist->newsegment = FALSE;
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}
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/**
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* gst_consistency_checker_free:
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* @consist: The #GstStreamConsistency to free.
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*
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* Frees the allocated data and probes associated with @consist.
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*
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* Since: 0.10.24
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*/
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void
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gst_consistency_checker_free (GstStreamConsistency * consist)
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{
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GList *node;
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GstStreamConsistencyProbe *p;
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/* Remove the data probes */
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for (node = consist->pads; node; node = g_list_next (node)) {
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p = (GstStreamConsistencyProbe *) node->data;
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gst_pad_remove_data_probe (p->pad, p->probeid);
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g_object_unref (p->pad);
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g_free (p);
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}
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g_list_free (consist->pads);
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g_free (consist);
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}
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