1 /*
2 * Copyright (C) 2021 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_venc_mpeg4.h"
17
18 G_DEFINE_TYPE(GstVencMpeg4, gst_venc_mpeg4, GST_TYPE_VENC_BASE);
19
20 static GstCaps *gst_venc_mpeg4_get_caps(GstVencBase *self, GstVideoCodecState *state);
21
gst_venc_mpeg4_class_init(GstVencMpeg4Class * klass)22 static void gst_venc_mpeg4_class_init(GstVencMpeg4Class *klass)
23 {
24 GST_DEBUG_OBJECT(klass, "Init mpeg4 class");
25 g_return_if_fail(klass != nullptr);
26 GstElementClass *element_class = GST_ELEMENT_CLASS(klass);
27 GstVencBaseClass *base_class = GST_VENC_BASE_CLASS(klass);
28 base_class->get_caps = gst_venc_mpeg4_get_caps;
29
30 gst_element_class_set_static_metadata(element_class,
31 "Hardware Driver Interface H.265 Video Encoder",
32 "Codec/Encoder/Video/Hardware",
33 "Decode H.265 video streams",
34 "OpenHarmony");
35 const gchar *src_caps_string = "video/mpeg, "
36 "mpegversion=(int) 4, "
37 "systemstream=(boolean) false, "
38 "width=(int) [1,MAX], " "height=(int) [1,MAX]";
39 GstCaps *src_caps = gst_caps_from_string(src_caps_string);
40
41 if (src_caps != nullptr) {
42 GstPadTemplate *src_templ = gst_pad_template_new("src", GST_PAD_SRC, GST_PAD_ALWAYS, src_caps);
43 gst_element_class_add_pad_template(element_class, src_templ);
44 gst_caps_unref(src_caps);
45 }
46 }
47
gst_venc_mpeg4_init(GstVencMpeg4 * self)48 static void gst_venc_mpeg4_init(GstVencMpeg4 *self)
49 {
50 (void)self;
51 }
52
gst_venc_mpeg4_get_caps(GstVencBase * self,GstVideoCodecState * state)53 static GstCaps *gst_venc_mpeg4_get_caps(GstVencBase *self, GstVideoCodecState *state)
54 {
55 (void)state;
56 g_return_val_if_fail(self != nullptr, nullptr);
57 GstCaps *caps = gst_caps_new_simple("video/mpeg",
58 "mpegversion", G_TYPE_INT, 4,
59 "systemstream", G_TYPE_BOOLEAN, FALSE,
60 "width", G_TYPE_INT, self->width,
61 "height", G_TYPE_INT, self->height, nullptr);
62 return caps;
63 }