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
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
#include <stdlib.h>
#include <obs.h>
#include <util/platform.h>
#include <obs-module.h>
#include <bmusb/bmusb.h>
#include <bmusb/fake_capture.h>
#include <iostream>
#define COLOR_SPACE "color_space"
#define COLOR_RANGE "color_range"
#define TEXT_COLOR_SPACE obs_module_text("ColorSpace")
#define TEXT_COLOR_SPACE_DEFAULT obs_module_text("ColorSpace.Default")
#define TEXT_COLOR_RANGE obs_module_text("ColorRange")
#define TEXT_COLOR_RANGE_DEFAULT obs_module_text("ColorRange.Default")
#define TEXT_COLOR_RANGE_PARTIAL obs_module_text("ColorRange.Partial")
#define TEXT_COLOR_RANGE_FULL obs_module_text("ColorRange.Full")
namespace b = bmusb;
struct bmusb_inst {
obs_source_t *source;
b::CaptureInterface *capture;
bool initialized;
video_colorspace space = VIDEO_CS_DEFAULT;
video_range_type range = VIDEO_RANGE_DEFAULT;
};
static const char *bmusb_get_name(void *unused)
{
UNUSED_PARAMETER(unused);
return "Blackmagic USB3 source (bmusb)";
}
static void *bmusb_create(obs_data_t *settings, obs_source_t *source)
{
struct bmusb_inst *rt = (bmusb_inst *) bzalloc(sizeof(struct bmusb_inst));
*rt = {
.source = source,
.capture = new b::BMUSBCapture(0), // @TODO select card
};
rt->capture->set_pixel_format(b::PixelFormat_8BitYCbCr);
rt->capture->set_frame_callback(
[rt](uint16_t timecode,
b::FrameAllocator::Frame video_frame, size_t video_offset, b::VideoFormat video_format,
b::FrameAllocator::Frame audio_frame, size_t audio_offset, b::AudioFormat audio_format
) {
uint64_t cur_time = os_gettime_ns();
if (!video_format.has_signal) {
std::cerr << "scanning" << std::endl;
video_frame.owner->release_frame(video_frame);
audio_frame.owner->release_frame(audio_frame);
return;
}
if (video_frame.data == nullptr) {
std::cerr << "oh no, data is NULL" << std::endl;
video_frame.owner->release_frame(video_frame);
audio_frame.owner->release_frame(audio_frame);
return;
}
struct obs_source_frame frame;
frame.width = video_format.width;
frame.height = video_format.height;
frame.format = VIDEO_FORMAT_UYVY;
frame.linesize[0] = video_format.stride;
frame.data[0] = video_frame.data + video_offset;
frame.timestamp = cur_time;
frame.flip = 0;
frame.full_range = rt->range == VIDEO_RANGE_FULL;
video_format_get_parameters(rt->space, rt->range,
frame.color_matrix, frame.color_range_min, frame.color_range_max);
obs_source_output_video(rt->source, &frame);
video_frame.owner->release_frame(video_frame);
#ifdef BMUSB_AUDIO
struct obs_source_audio audio;
audio.samples_per_sec = audio_format.sample_rate;
audio.frames = (audio_frame.len > audio_offset) ? (audio_frame.len - audio_offset) / audio_format.num_channels / (audio_format.bits_per_sample / 8) : 0;
audio.format = AUDIO_FORMAT_32BIT;
audio.data[0] = audio_frame.data + audio_offset;
audio.timestamp = cur_time;
switch (audio_format.num_channels) {
case 1: audio.speakers = SPEAKERS_MONO; break;
case 2: audio.speakers = SPEAKERS_STEREO; break;
case 3: audio.speakers = SPEAKERS_2POINT1; break;
case 4: audio.speakers = SPEAKERS_4POINT0; break;
case 5: audio.speakers = SPEAKERS_4POINT1; break;
case 6: audio.speakers = SPEAKERS_5POINT1; break;
case 8: audio.speakers = SPEAKERS_7POINT1; break;
default: audio.speakers = SPEAKERS_UNKNOWN; break;
}
obs_source_output_audio(rt->source, &audio);
#else
UNUSED_PARAMETER(audio_offset);
UNUSED_PARAMETER(audio_format);
#endif
audio_frame.owner->release_frame(audio_frame);
UNUSED_PARAMETER(timecode);
}
);
rt->capture->configure_card();
b::BMUSBCapture::start_bm_thread();
rt->capture->start_bm_capture();
rt->initialized = true;
UNUSED_PARAMETER(settings);
UNUSED_PARAMETER(source);
return rt;
}
static void bmusb_destroy(void *data)
{
struct bmusb_inst *rt = (bmusb_inst *) data;
if (rt) {
if (rt->initialized) {
delete rt->capture;
b::BMUSBCapture::stop_bm_thread();
}
bfree(rt);
}
}
static void bmusb_update(void *data, obs_data_t *settings)
{
struct bmusb_inst *rt = (bmusb_inst *) data;
rt->space = (video_colorspace)obs_data_get_int(settings, COLOR_SPACE);
rt->range = (video_range_type)obs_data_get_int(settings, COLOR_RANGE);
}
static void bmusb_get_defaults(obs_data_t *settings)
{
obs_data_set_default_int(settings, COLOR_SPACE, VIDEO_CS_DEFAULT);
obs_data_set_default_int(settings, COLOR_RANGE, VIDEO_RANGE_DEFAULT);
}
static obs_properties_t *bmusb_get_properties(void *data)
{
obs_properties_t *props = obs_properties_create();
obs_property_t *list = obs_properties_add_list(props, COLOR_SPACE, TEXT_COLOR_SPACE,
OBS_COMBO_TYPE_LIST,
OBS_COMBO_FORMAT_INT);
obs_property_list_add_int(list, TEXT_COLOR_SPACE_DEFAULT,
VIDEO_CS_DEFAULT);
obs_property_list_add_int(list, "BT.601", VIDEO_CS_601);
obs_property_list_add_int(list, "BT.709", VIDEO_CS_709);
list = obs_properties_add_list(props, COLOR_RANGE, TEXT_COLOR_RANGE,
OBS_COMBO_TYPE_LIST,
OBS_COMBO_FORMAT_INT);
obs_property_list_add_int(list, TEXT_COLOR_RANGE_DEFAULT,
VIDEO_RANGE_DEFAULT);
obs_property_list_add_int(list, TEXT_COLOR_RANGE_PARTIAL,
VIDEO_RANGE_PARTIAL);
obs_property_list_add_int(list, TEXT_COLOR_RANGE_FULL,
VIDEO_RANGE_FULL);
UNUSED_PARAMETER(data);
return props;
}
struct obs_source_info bmusb_source_info = {
.id = "bmusb",
.type = OBS_SOURCE_TYPE_INPUT,
#ifdef BMUSB_AUDIO
.output_flags = OBS_SOURCE_ASYNC_VIDEO | OBS_SOURCE_AUDIO,
#else
.output_flags = OBS_SOURCE_ASYNC_VIDEO,
#endif
.get_name = bmusb_get_name,
.create = bmusb_create,
.destroy = bmusb_destroy,
.get_defaults = bmusb_get_defaults,
.get_properties = bmusb_get_properties,
.update = bmusb_update,
};
OBS_DECLARE_MODULE()
OBS_MODULE_USE_DEFAULT_LOCALE("decklink", "en-US")
extern "C" bool obs_module_load(void)
{
obs_register_source(&bmusb_source_info);
return true;
}
|
