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#include "../include/GsrInfo.hpp"
#include "../include/Utils.hpp"
#include <optional>
#include <string.h>
namespace gsr {
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 == "av1")
gsr_info->supported_video_codecs.av1 = 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 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 --info' 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 --info' 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;
}
}
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