1 /*
2 * Copyright (C) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "gst_subtitle_display_sink.h"
17 #include <cinttypes>
18 #include <gst/gst.h>
19 #include "gst_subtitle_sink.h"
20
21 using namespace OHOS::Media;
22
23 static GstStaticPadTemplate g_sinktemplate = GST_STATIC_PAD_TEMPLATE("subtitledisplaysink",
24 GST_PAD_SINK,
25 GST_PAD_ALWAYS,
26 GST_STATIC_CAPS_ANY);
27
28 static void gst_subtitle_display_sink_dispose(GObject *obj);
29 static void gst_subtitle_display_sink_finalize(GObject *obj);
30 static void gst_subtitle_display_sink_set_property(GObject *object,
31 guint prop_id, const GValue *value, GParamSpec *pspec);
32 static GstStateChangeReturn gst_subtitle_display_sink_change_state(GstElement *element, GstStateChange transition);
33 static gboolean gst_subtitle_display_sink_event(GstBaseSink *basesink, GstEvent *event);
34
35 #define gst_subtitle_display_sink_parent_class parent_class
36 G_DEFINE_TYPE(GstSubtitleDisplaySink, gst_subtitle_display_sink, GST_TYPE_SUBTITLE_SINK);
37
38 GST_DEBUG_CATEGORY_STATIC(gst_subtitle_display_sink_debug_category);
39 #define GST_CAT_DEFAULT gst_subtitle_display_sink_debug_category
40
gst_subtitle_display_sink_class_init(GstSubtitleDisplaySinkClass * kclass)41 static void gst_subtitle_display_sink_class_init(GstSubtitleDisplaySinkClass *kclass)
42 {
43 g_return_if_fail(kclass != nullptr);
44
45 GObjectClass *gobject_class = G_OBJECT_CLASS(kclass);
46 GstElementClass *element_class = GST_ELEMENT_CLASS(kclass);
47 GstBaseSinkClass *base_sink_class = GST_BASE_SINK_CLASS(kclass);
48 gst_element_class_add_static_pad_template(element_class, &g_sinktemplate);
49 gst_element_class_set_static_metadata(element_class,
50 "SutitlebDisplaySink", "Sink/Subtitle", " Subtitle Display Sink", "OpenHarmony");
51
52 gobject_class->dispose = gst_subtitle_display_sink_dispose;
53 gobject_class->finalize = gst_subtitle_display_sink_finalize;
54 gobject_class->set_property = gst_subtitle_display_sink_set_property;
55 element_class->change_state = gst_subtitle_display_sink_change_state;
56 base_sink_class->event = gst_subtitle_display_sink_event;
57
58 GST_DEBUG_CATEGORY_INIT(gst_subtitle_display_sink_debug_category,
59 "subtitledisplaysink", 0, "subtitledisplaysink class");
60 }
61
gst_subtitle_display_sink_init(GstSubtitleDisplaySink * subtitle_display_sink)62 static void gst_subtitle_display_sink_init(GstSubtitleDisplaySink *subtitle_display_sink)
63 {
64 g_return_if_fail(subtitle_display_sink != nullptr);
65 }
66
gst_subtitle_display_sink_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)67 static void gst_subtitle_display_sink_set_property(GObject *object,
68 guint prop_id, const GValue *value, GParamSpec *pspec)
69 {
70 g_return_if_fail(object != nullptr);
71 g_return_if_fail(value != nullptr);
72 g_return_if_fail(pspec != nullptr);
73 (void)prop_id;
74 }
75
gst_subtitle_display_sink_change_state(GstElement * element,GstStateChange transition)76 static GstStateChangeReturn gst_subtitle_display_sink_change_state(GstElement *element, GstStateChange transition)
77 {
78 g_return_val_if_fail(element != nullptr, GST_STATE_CHANGE_FAILURE);
79 GstSubtitleDisplaySink *subtitle_display_sink = GST_SUBTITLE_DISPLAY_SINK_CAST(element);
80 switch (transition) {
81 case GST_STATE_CHANGE_PAUSED_TO_READY: {
82 GST_INFO_OBJECT(subtitle_display_sink, "subtitle display sink stop");
83 break;
84 }
85 default:
86 break;
87 }
88 return GST_ELEMENT_CLASS(parent_class)->change_state(element, transition);
89 }
90
gst_subtitle_display_sink_event(GstBaseSink * basesink,GstEvent * event)91 static gboolean gst_subtitle_display_sink_event(GstBaseSink *basesink, GstEvent *event)
92 {
93 GstSubtitleDisplaySink *subtitle_display_sink = GST_SUBTITLE_DISPLAY_SINK_CAST(basesink);
94 g_return_val_if_fail(subtitle_display_sink != nullptr, FALSE);
95 g_return_val_if_fail(event != nullptr, FALSE);
96
97 switch (event->type) {
98 case GST_EVENT_EOS: {
99 GST_INFO_OBJECT(subtitle_display_sink, "receiving EOS");
100 break;
101 }
102 default:
103 break;
104 }
105 return GST_BASE_SINK_CLASS(parent_class)->event(basesink, event);
106 }
107
gst_subtitle_display_sink_dispose(GObject * obj)108 static void gst_subtitle_display_sink_dispose(GObject *obj)
109 {
110 g_return_if_fail(obj != nullptr);
111 G_OBJECT_CLASS(parent_class)->dispose(obj);
112 }
113
gst_subtitle_display_sink_finalize(GObject * obj)114 static void gst_subtitle_display_sink_finalize(GObject *obj)
115 {
116 g_return_if_fail(obj != nullptr);
117 G_OBJECT_CLASS(parent_class)->finalize(obj);
118 }