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/****************************************************************************
**
** Copyright (C) 2016 Jolla Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
******************************************************************************/
#include "qgstreamerbufferprobe_p.h"
#include "qgstutils_p.h"
QT_BEGIN_NAMESPACE
QGstreamerBufferProbe::QGstreamerBufferProbe(Flags flags)
: m_flags(flags)
{
}
QGstreamerBufferProbe::~QGstreamerBufferProbe() = default;
void QGstreamerBufferProbe::addProbeToPad(GstPad *pad, bool downstream)
{
if (GstCaps *caps = gst_pad_get_current_caps(pad)) {
probeCaps(caps);
gst_caps_unref(caps);
}
if (m_flags & ProbeCaps) {
m_capsProbeId = gst_pad_add_probe(
pad,
downstream
? GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM
: GST_PAD_PROBE_TYPE_EVENT_UPSTREAM,
capsProbe,
this,
nullptr);
}
if (m_flags & ProbeBuffers) {
m_bufferProbeId = gst_pad_add_probe(
pad, GST_PAD_PROBE_TYPE_BUFFER, bufferProbe, this, nullptr);
}
}
void QGstreamerBufferProbe::removeProbeFromPad(GstPad *pad)
{
if (m_capsProbeId != -1) {
gst_pad_remove_probe(pad, m_capsProbeId);
m_capsProbeId = -1;
}
if (m_bufferProbeId != -1) {
gst_pad_remove_probe(pad, m_bufferProbeId);
m_bufferProbeId = -1;
}
}
void QGstreamerBufferProbe::probeCaps(GstCaps *)
{
}
bool QGstreamerBufferProbe::probeBuffer(GstBuffer *)
{
return true;
}
GstPadProbeReturn QGstreamerBufferProbe::capsProbe(GstPad *, GstPadProbeInfo *info, gpointer user_data)
{
QGstreamerBufferProbe * const control = static_cast<QGstreamerBufferProbe *>(user_data);
if (GstEvent * const event = gst_pad_probe_info_get_event(info)) {
if (GST_EVENT_TYPE(event) == GST_EVENT_CAPS) {
GstCaps *caps;
gst_event_parse_caps(event, &caps);
control->probeCaps(caps);
}
}
return GST_PAD_PROBE_OK;
}
GstPadProbeReturn QGstreamerBufferProbe::bufferProbe(
GstPad *, GstPadProbeInfo *info, gpointer user_data)
{
QGstreamerBufferProbe * const control = static_cast<QGstreamerBufferProbe *>(user_data);
if (GstBuffer * const buffer = gst_pad_probe_info_get_buffer(info))
return control->probeBuffer(buffer) ? GST_PAD_PROBE_OK : GST_PAD_PROBE_DROP;
return GST_PAD_PROBE_OK;
}
QT_END_NAMESPACE
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