1 /* GStreamer
2 * Copyright (C) 2020 Collabora Ltd.
3 * Author: Nicolas Dufresne <nicolas.dufresne@collabora.com>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 */
20
21 #ifdef HAVE_CONFIG_H
22 #include "config.h"
23 #endif
24
25 #include "gstv4l2codecdevice.h"
26 #include "gstv4l2codech264dec.h"
27 #include "gstv4l2codecmpeg2dec.h"
28 #include "gstv4l2codecvp8dec.h"
29 #include "gstv4l2codecvp9dec.h"
30 #include "gstv4l2decoder.h"
31 #include "linux/v4l2-controls.h"
32 #include "linux/media.h"
33
34 #define GST_CAT_DEFAULT gstv4l2codecs_debug
35 GST_DEBUG_CATEGORY (gstv4l2codecs_debug);
36
37 static void
register_video_decoder(GstPlugin * plugin,GstV4l2CodecDevice * device)38 register_video_decoder (GstPlugin * plugin, GstV4l2CodecDevice * device)
39 {
40 GstV4l2Decoder *decoder = gst_v4l2_decoder_new (device);
41 gint i;
42 guint32 fmt;
43
44 if (!gst_v4l2_decoder_open (decoder)) {
45 g_object_unref (decoder);
46 return;
47 }
48
49 for (i = 0; gst_v4l2_decoder_enum_sink_fmt (decoder, i, &fmt); i++) {
50 switch (fmt) {
51 case V4L2_PIX_FMT_H264_SLICE:
52 GST_INFO_OBJECT (decoder, "Registering %s as H264 Decoder",
53 device->name);
54 gst_v4l2_codec_h264_dec_register (plugin, decoder, device,
55 GST_RANK_PRIMARY + 1);
56 break;
57 case V4L2_PIX_FMT_VP8_FRAME:
58 GST_INFO_OBJECT (decoder, "Registering %s as VP8 Decoder",
59 device->name);
60 gst_v4l2_codec_vp8_dec_register (plugin, decoder, device,
61 GST_RANK_PRIMARY + 1);
62 break;
63 case V4L2_PIX_FMT_MPEG2_SLICE:
64 GST_INFO_OBJECT (decoder, "Registering %s as Mpeg2 Decoder",
65 device->name);
66 gst_v4l2_codec_mpeg2_dec_register (plugin, decoder, device,
67 GST_RANK_PRIMARY + 1);
68 break;
69 case V4L2_PIX_FMT_VP9_FRAME:
70 GST_INFO_OBJECT (decoder, "Registering %s as VP9 Decoder",
71 device->name);
72 gst_v4l2_codec_vp9_dec_register (plugin, decoder, device,
73 GST_RANK_PRIMARY + 1);
74 break;
75
76 default:
77 GST_FIXME_OBJECT (decoder, "%" GST_FOURCC_FORMAT " is not supported.",
78 GST_FOURCC_ARGS (fmt));
79 break;
80 }
81 }
82
83 g_object_unref (decoder);
84 }
85
86 static gboolean
plugin_init(GstPlugin * plugin)87 plugin_init (GstPlugin * plugin)
88 {
89 GList *devices, *d;
90 const gchar *paths[] = { "/dev", NULL };
91 const gchar *names[] = { "media", NULL };
92
93 GST_DEBUG_CATEGORY_INIT (gstv4l2codecs_debug, "v4l2codecs", 0,
94 "V4L2 CODECs general debug");
95
96 /* Add some dependency, so the dynamic features get updated upon changes in
97 * /dev/media* */
98 gst_plugin_add_dependency (plugin,
99 NULL, paths, names, GST_PLUGIN_DEPENDENCY_FLAG_FILE_NAME_IS_PREFIX);
100
101 devices = gst_v4l2_codec_find_devices ();
102 for (d = devices; d; d = g_list_next (d)) {
103 GstV4l2CodecDevice *device = d->data;
104
105 if (device->function == MEDIA_ENT_F_PROC_VIDEO_DECODER)
106 register_video_decoder (plugin, device);
107 }
108
109 gst_v4l2_codec_device_list_free (devices);
110 return TRUE;
111 }
112
113 GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
114 GST_VERSION_MINOR,
115 v4l2codecs,
116 "V4L2 CODEC Accelerators plugin",
117 plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
118