1 /* GStreamer
2 * Copyright (C) <2021> Collabora Ltd.
3 * Author: Nicolas Dufresne <nicolas.dufresne@collabora.com>
4 * Author: Julian Bouzas <julian.bouzas@collabora.com>
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22 /**
23 * SECTION:element-mppvpxalphadecodebin
24 * @title: Wrapper to decode MPP VP8/VP9 alpha using mppvideodec
25 *
26 * Use two `mppvideodec` instance in order to decode VP8/VP9 alpha channel.
27 *
28 * Since: 1.20
29 */
30
31 #ifdef HAVE_CONFIG_H
32 #include "config.h"
33 #endif
34
35 #include "gstmppvpxalphadecodebin.h"
36
37 static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
38 GST_PAD_SINK,
39 GST_PAD_ALWAYS,
40 GST_STATIC_CAPS ("video/x-vp8, codec-alpha = (boolean) true; "
41 "video/x-vp9, codec-alpha = (boolean) true"));
42
43 struct _GstMppVpxAlphaDecodeBin
44 {
45 GstMppAlphaDecodeBin parent;
46 };
47
48 #define gst_mpp_vpx_alpha_decode_bin_parent_class parent_class
49 G_DEFINE_TYPE (GstMppVpxAlphaDecodeBin, gst_mpp_vpx_alpha_decode_bin,
50 GST_TYPE_MPP_ALPHA_DECODE_BIN);
51
52 static void
gst_mpp_vpx_alpha_decode_bin_class_init(GstMppVpxAlphaDecodeBinClass * klass)53 gst_mpp_vpx_alpha_decode_bin_class_init (GstMppVpxAlphaDecodeBinClass * klass)
54 {
55 GstMppAlphaDecodeBinClass *adbin_class = (GstMppAlphaDecodeBinClass *) klass;
56 GstElementClass *element_class = (GstElementClass *) klass;
57
58 adbin_class->decoder_name = "mppvideodec";
59 gst_element_class_add_static_pad_template (element_class, &sink_template);
60
61 gst_element_class_set_static_metadata (element_class,
62 "VP8/VP9 Alpha Decoder", "Codec/Decoder/Video",
63 "Wrapper bin to decode VP8/VP9 with alpha stream.",
64 "Julian Bouzas <julian.bouzas@collabora.com>");
65 }
66
67 static void
gst_mpp_vpx_alpha_decode_bin_init(GstMppVpxAlphaDecodeBin * self)68 gst_mpp_vpx_alpha_decode_bin_init (GstMppVpxAlphaDecodeBin * self)
69 {
70 (void) self;
71 }
72
73 gboolean
gst_mpp_vpx_alpha_decode_bin_register(GstPlugin * plugin,guint rank)74 gst_mpp_vpx_alpha_decode_bin_register (GstPlugin * plugin, guint rank)
75 {
76 return gst_element_register (plugin, "mppvpxalphadecodebin", rank,
77 gst_mpp_vpx_alpha_decode_bin_get_type ());
78 }
79