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/*
* Copyright (C) 2013 Cable Television Laboratories, Inc.
* Copyright (C) 2021 Igalia S.L.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "TextCombinerPadGStreamer.h"
#if ENABLE(VIDEO) && USE(GSTREAMER)
#include "GStreamerCommon.h"
#include "TextCombinerGStreamer.h"
#include <wtf/glib/WTFGType.h>
struct _WebKitTextCombinerPadPrivate {
GRefPtr<GstTagList> tags;
GRefPtr<GstPad> innerCombinerPad;
bool shouldProcessStickyEvents { true };
};
enum {
PROP_PAD_0,
PROP_PAD_TAGS,
PROP_INNER_COMBINER_PAD,
N_PROPERTIES,
};
static GParamSpec* sObjProperties[N_PROPERTIES] = { nullptr, };
#define webkit_text_combiner_pad_parent_class parent_class
WEBKIT_DEFINE_TYPE(WebKitTextCombinerPad, webkit_text_combiner_pad, GST_TYPE_GHOST_PAD);
static gboolean webkitTextCombinerPadEvent(GstPad* pad, GstObject* parent, GstEvent* event)
{
switch (GST_EVENT_TYPE(event)) {
case GST_EVENT_TAG: {
auto* combinerPad = WEBKIT_TEXT_COMBINER_PAD(pad);
GstTagList* tags;
gst_event_parse_tag(event, &tags);
ASSERT(tags);
{
auto locker = GstObjectLocker(pad);
if (!combinerPad->priv->tags)
combinerPad->priv->tags = adoptGRef(gst_tag_list_copy(tags));
else
gst_tag_list_insert(combinerPad->priv->tags.get(), tags, GST_TAG_MERGE_REPLACE);
}
g_object_notify_by_pspec(G_OBJECT(pad), sObjProperties[PROP_PAD_TAGS]);
break;
}
default:
break;
}
return gst_pad_event_default(pad, parent, event);
}
static GstFlowReturn webkitTextCombinerPadChain(GstPad* pad, GstObject* parent, GstBuffer* buffer)
{
auto* combinerPad = WEBKIT_TEXT_COMBINER_PAD(pad);
if (combinerPad->priv->shouldProcessStickyEvents) {
gst_pad_sticky_events_foreach(pad, [](GstPad* pad, GstEvent** event, gpointer) -> gboolean {
if (GST_EVENT_TYPE(*event) != GST_EVENT_CAPS)
return TRUE;
auto* combinerPad = WEBKIT_TEXT_COMBINER_PAD(pad);
auto parent = adoptGRef(gst_pad_get_parent(pad));
GstCaps* caps;
gst_event_parse_caps(*event, &caps);
combinerPad->priv->shouldProcessStickyEvents = false;
webKitTextCombinerHandleCaps(WEBKIT_TEXT_COMBINER(parent.get()), pad, caps);
return FALSE;
}, nullptr);
}
return gst_proxy_pad_chain_default(pad, parent, buffer);
}
static void webkitTextCombinerPadGetProperty(GObject* object, unsigned propertyId, GValue* value, GParamSpec* pspec)
{
auto* pad = WEBKIT_TEXT_COMBINER_PAD(object);
switch (propertyId) {
case PROP_PAD_TAGS: {
auto locker = GstObjectLocker(object);
if (pad->priv->tags)
g_value_take_boxed(value, gst_tag_list_copy(pad->priv->tags.get()));
break;
}
case PROP_INNER_COMBINER_PAD: {
auto locker = GstObjectLocker(object);
g_value_set_object(value, pad->priv->innerCombinerPad.get());
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propertyId, pspec);
break;
}
}
static void webkitTextCombinerPadSetProperty(GObject* object, guint propertyId, const GValue* value, GParamSpec* pspec)
{
auto* pad = WEBKIT_TEXT_COMBINER_PAD(object);
switch (propertyId) {
case PROP_INNER_COMBINER_PAD: {
auto locker = GstObjectLocker(object);
pad->priv->innerCombinerPad = adoptGRef(GST_PAD_CAST(g_value_get_object(value)));
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, propertyId, pspec);
break;
}
}
static void webkitTextCombinerPadConstructed(GObject* object)
{
GST_CALL_PARENT(G_OBJECT_CLASS, constructed, (object));
gst_ghost_pad_construct(GST_GHOST_PAD(object));
gst_pad_set_event_function(GST_PAD_CAST(object), webkitTextCombinerPadEvent);
gst_pad_set_chain_function(GST_PAD_CAST(object), webkitTextCombinerPadChain);
}
static void webkit_text_combiner_pad_class_init(WebKitTextCombinerPadClass* klass)
{
auto* gobjectClass = G_OBJECT_CLASS(klass);
gobjectClass->constructed = webkitTextCombinerPadConstructed;
gobjectClass->get_property = GST_DEBUG_FUNCPTR(webkitTextCombinerPadGetProperty);
gobjectClass->set_property = GST_DEBUG_FUNCPTR(webkitTextCombinerPadSetProperty);
sObjProperties[PROP_PAD_TAGS] =
g_param_spec_boxed("tags", nullptr, nullptr, GST_TYPE_TAG_LIST,
static_cast<GParamFlags>(G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
sObjProperties[PROP_INNER_COMBINER_PAD] =
g_param_spec_object("inner-combiner-pad", nullptr, nullptr, GST_TYPE_PAD,
static_cast<GParamFlags>(G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_properties(gobjectClass, N_PROPERTIES, sObjProperties);
}
GstPad* webKitTextCombinerPadLeakInternalPadRef(WebKitTextCombinerPad* pad)
{
return pad->priv->innerCombinerPad.leakRef();
}
#endif
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