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
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
#include "../include/GsrInfo.hpp"
#include "../include/Utils.hpp"
#include <optional>
#include <string.h>
namespace gsr {
static std::optional<KeyValue> parse_key_value(std::string_view line) {
const size_t space_index = line.find('|');
if(space_index == std::string_view::npos)
return std::nullopt;
return KeyValue{line.substr(0, space_index), line.substr(space_index + 1)};
}
static void parse_system_info_line(GsrInfo *gsr_info, std::string_view line) {
const std::optional<KeyValue> key_value = parse_key_value(line);
if(!key_value)
return;
if(key_value->key == "display_server") {
if(key_value->value == "x11")
gsr_info->system_info.display_server = DisplayServer::X11;
else if(key_value->value == "wayland")
gsr_info->system_info.display_server = DisplayServer::WAYLAND;
}
}
static void parse_gpu_info_line(GsrInfo *gsr_info, std::string_view line) {
const std::optional<KeyValue> key_value = parse_key_value(line);
if(!key_value)
return;
if(key_value->key == "vendor") {
if(key_value->value == "amd")
gsr_info->gpu_info.vendor = GpuVendor::AMD;
else if(key_value->value == "intel")
gsr_info->gpu_info.vendor = GpuVendor::INTEL;
else if(key_value->value == "nvidia")
gsr_info->gpu_info.vendor = GpuVendor::NVIDIA;
}
}
static void parse_video_codecs_line(GsrInfo *gsr_info, std::string_view line) {
if(line == "h264")
gsr_info->supported_video_codecs.h264 = true;
else if(line == "h264_software")
gsr_info->supported_video_codecs.h264_software = true;
else if(line == "hevc")
gsr_info->supported_video_codecs.hevc = true;
else if(line == "hevc_hdr")
gsr_info->supported_video_codecs.hevc_hdr = true;
else if(line == "hevc_10bit")
gsr_info->supported_video_codecs.hevc_10bit = true;
else if(line == "av1")
gsr_info->supported_video_codecs.av1 = true;
else if(line == "av1_hdr")
gsr_info->supported_video_codecs.av1_hdr = true;
else if(line == "av1_10bit")
gsr_info->supported_video_codecs.av1_10bit = true;
else if(line == "vp8")
gsr_info->supported_video_codecs.vp8 = true;
else if(line == "vp9")
gsr_info->supported_video_codecs.vp9 = true;
}
static std::optional<GsrMonitor> capture_option_line_to_monitor(std::string_view line) {
std::optional<GsrMonitor> monitor;
const std::optional<KeyValue> key_value = parse_key_value(line);
if(!key_value)
return monitor;
char value_buffer[256];
snprintf(value_buffer, sizeof(value_buffer), "%.*s", (int)key_value->value.size(), key_value->value.data());
monitor = GsrMonitor{std::string(key_value->key), mgl::vec2i{0, 0}};
if(sscanf(value_buffer, "%dx%d", &monitor->size.x, &monitor->size.y) != 2)
monitor->size = {0, 0};
return monitor;
}
static void parse_capture_options_line(GsrInfo *gsr_info, std::string_view line) {
if(line == "window")
gsr_info->supported_capture_options.window = true;
else if(line == "focused")
gsr_info->supported_capture_options.focused = true;
else if(line == "screen")
gsr_info->supported_capture_options.screen = true;
else if(line == "portal")
gsr_info->supported_capture_options.portal = true;
else {
std::optional<GsrMonitor> monitor = capture_option_line_to_monitor(line);
if(monitor)
gsr_info->supported_capture_options.monitors.push_back(std::move(monitor.value()));
}
}
enum class GsrInfoSection {
UNKNOWN,
SYSTEM_INFO,
GPU_INFO,
VIDEO_CODECS,
CAPTURE_OPTIONS
};
static bool starts_with(std::string_view str, const char *substr) {
size_t len = strlen(substr);
return str.size() >= len && memcmp(str.data(), substr, len) == 0;
}
GsrInfoExitStatus get_gpu_screen_recorder_info(GsrInfo *gsr_info) {
*gsr_info = GsrInfo{};
FILE *f = popen("gpu-screen-recorder --info", "r");
if(!f) {
fprintf(stderr, "error: 'gpu-screen-recorder --info' failed\n");
return GsrInfoExitStatus::FAILED_TO_RUN_COMMAND;
}
char output[8192];
ssize_t bytes_read = fread(output, 1, sizeof(output) - 1, f);
if(bytes_read < 0 || ferror(f)) {
fprintf(stderr, "error: failed to read 'gpu-screen-recorder --info' output\n");
pclose(f);
return GsrInfoExitStatus::FAILED_TO_RUN_COMMAND;
}
output[bytes_read] = '\0';
GsrInfoSection section = GsrInfoSection::UNKNOWN;
string_split_char({output, (size_t)bytes_read}, '\n', [&](std::string_view line) {
if(starts_with(line, "section=")) {
const std::string_view section_name = line.substr(8);
if(section_name == "system_info")
section = GsrInfoSection::SYSTEM_INFO;
else if(section_name == "gpu_info")
section = GsrInfoSection::GPU_INFO;
else if(section_name == "video_codecs")
section = GsrInfoSection::VIDEO_CODECS;
else if(section_name == "capture_options")
section = GsrInfoSection::CAPTURE_OPTIONS;
else
section = GsrInfoSection::UNKNOWN;
return true;
}
switch(section) {
case GsrInfoSection::UNKNOWN: {
break;
}
case GsrInfoSection::SYSTEM_INFO: {
parse_system_info_line(gsr_info, line);
break;
}
case GsrInfoSection::GPU_INFO: {
parse_gpu_info_line(gsr_info, line);
break;
}
case GsrInfoSection::VIDEO_CODECS: {
parse_video_codecs_line(gsr_info, line);
break;
}
case GsrInfoSection::CAPTURE_OPTIONS: {
parse_capture_options_line(gsr_info, line);
break;
}
}
return true;
});
int status = pclose(f);
if(WIFEXITED(status)) {
switch(WEXITSTATUS(status)) {
case 0: return GsrInfoExitStatus::OK;
case 14: return GsrInfoExitStatus::BROKEN_DRIVERS;
case 22: return GsrInfoExitStatus::OPENGL_FAILED;
case 23: return GsrInfoExitStatus::NO_DRM_CARD;
default: return GsrInfoExitStatus::FAILED_TO_RUN_COMMAND;
}
}
return GsrInfoExitStatus::FAILED_TO_RUN_COMMAND;
}
static std::optional<AudioDevice> parse_audio_device_line(std::string_view line) {
std::optional<AudioDevice> audio_device;
const std::optional<KeyValue> key_value = parse_key_value(line);
if(!key_value)
return audio_device;
audio_device = AudioDevice{std::string(key_value->key), std::string(key_value->value)};
return audio_device;
}
std::vector<AudioDevice> get_audio_devices() {
std::vector<AudioDevice> audio_devices;
FILE *f = popen("gpu-screen-recorder --list-audio-devices", "r");
if(!f) {
fprintf(stderr, "error: 'gpu-screen-recorder --list-audio-devices' failed\n");
return audio_devices;
}
char output[16384];
ssize_t bytes_read = fread(output, 1, sizeof(output) - 1, f);
if(bytes_read < 0 || ferror(f)) {
fprintf(stderr, "error: failed to read 'gpu-screen-recorder --list-audio-devices' output\n");
pclose(f);
return audio_devices;
}
output[bytes_read] = '\0';
string_split_char({output, (size_t)bytes_read}, '\n', [&](std::string_view line) {
std::optional<AudioDevice> audio_device = parse_audio_device_line(line);
if(audio_device)
audio_devices.push_back(std::move(audio_device.value()));
return true;
});
return audio_devices;
}
}
|
