1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Collabora Ltd.
* Author: Nicolas Dufresne <nicolas.dufresne@collabora.com>
*
* gstlibcamerapad.cpp - GStreamer Capture Pad
*/
#include "gstlibcamerapad.h"
#include <libcamera/stream.h>
#include "gstlibcamera-utils.h"
using namespace libcamera;
struct _GstLibcameraPad {
GstPad parent;
StreamRole role;
GstLibcameraPool *pool;
GQueue pending_buffers;
};
enum {
PROP_0,
PROP_STREAM_ROLE
};
G_DEFINE_TYPE(GstLibcameraPad, gst_libcamera_pad, GST_TYPE_PAD);
static void
gst_libcamera_pad_set_property(GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec)
{
auto *self = GST_LIBCAMERA_PAD(object);
GLibLocker lock(GST_OBJECT(self));
switch (prop_id) {
case PROP_STREAM_ROLE:
self->role = (StreamRole)g_value_get_enum(value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
gst_libcamera_pad_get_property(GObject *object, guint prop_id, GValue *value,
GParamSpec *pspec)
{
auto *self = GST_LIBCAMERA_PAD(object);
GLibLocker lock(GST_OBJECT(self));
switch (prop_id) {
case PROP_STREAM_ROLE:
g_value_set_enum(value, self->role);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec);
break;
}
}
static void
gst_libcamera_pad_init(GstLibcameraPad *self)
{
}
static GType
gst_libcamera_stream_role_get_type(void)
{
static GType type = 0;
static const GEnumValue values[] = {
{ StillCapture, "libcamera::StillCapture", "still-capture" },
{ VideoRecording, "libcamera::VideoRecording", "video-recording" },
{ Viewfinder, "libcamera::Viewfinder", "view-finder" },
{ 0, NULL, NULL }
};
if (!type)
type = g_enum_register_static("GstLibcameraStreamRole", values);
return type;
}
static void
gst_libcamera_pad_class_init(GstLibcameraPadClass *klass)
{
auto *object_class = G_OBJECT_CLASS(klass);
object_class->set_property = gst_libcamera_pad_set_property;
object_class->get_property = gst_libcamera_pad_get_property;
auto *spec = g_param_spec_enum("stream-role", "Stream Role",
"The selected stream role",
gst_libcamera_stream_role_get_type(),
VideoRecording,
(GParamFlags)(GST_PARAM_MUTABLE_READY
| G_PARAM_CONSTRUCT
| G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS));
g_object_class_install_property(object_class, PROP_STREAM_ROLE, spec);
}
StreamRole
gst_libcamera_pad_get_role(GstPad *pad)
{
auto *self = GST_LIBCAMERA_PAD(pad);
GLibLocker lock(GST_OBJECT(self));
return self->role;
}
GstLibcameraPool *
gst_libcamera_pad_get_pool(GstPad *pad)
{
auto *self = GST_LIBCAMERA_PAD(pad);
return self->pool;
}
void
gst_libcamera_pad_set_pool(GstPad *pad, GstLibcameraPool *pool)
{
auto *self = GST_LIBCAMERA_PAD(pad);
if (self->pool)
g_object_unref(self->pool);
self->pool = pool;
}
Stream *
gst_libcamera_pad_get_stream(GstPad *pad)
{
auto *self = GST_LIBCAMERA_PAD(pad);
if (self->pool)
return gst_libcamera_pool_get_stream(self->pool);
return nullptr;
}
void
gst_libcamera_pad_queue_buffer(GstPad *pad, GstBuffer *buffer)
{
auto *self = GST_LIBCAMERA_PAD(pad);
GLibLocker lock(GST_OBJECT(self));
g_queue_push_head(&self->pending_buffers, buffer);
}
GstFlowReturn
gst_libcamera_pad_push_pending(GstPad *pad)
{
auto *self = GST_LIBCAMERA_PAD(pad);
GstBuffer *buffer;
{
GLibLocker lock(GST_OBJECT(self));
buffer = GST_BUFFER(g_queue_pop_tail(&self->pending_buffers));
}
if (!buffer)
return GST_FLOW_OK;
return gst_pad_push(pad, buffer);
}
|
