Glib::RefPtr<Gdk::Pixbuf> webcam::extract_frame(Glib::RefPtr<Gst::Sample> sample,
std::shared_ptr<std::pair<int, int>> resolution) {
utils::debug::scope_log log(DBG_LVL_5("gtox"), {});
static auto null = Glib::RefPtr<Gdk::Pixbuf>();
if (!sample) {
return null;
}
auto buffer = sample->get_buffer();
if (!buffer) {
return null;
}
auto map = Glib::RefPtr<Gst::MapInfo>(new Gst::MapInfo);
if (!buffer->map(map, Gst::MAP_READ)) {
return null;
}
auto mem = new uint8_t[map->get_size()];
std::copy(map->get_data(), map->get_data() + map->get_size(), mem);
buffer->unmap(map);
return Gdk::Pixbuf::create_from_data(mem,
Gdk::COLORSPACE_RGB,
false,
8,
resolution->first,
resolution->second,
GST_ROUND_UP_4( resolution->first*3 ),
[](const guint8* data) {
delete[] data;
});
}
Glib::RefPtr<Gdk::Pixbuf> gstreamer::extract_frame(Glib::RefPtr<Gst::Sample> sample,
std::shared_ptr<std::pair<int, int>> resolution) {
static auto null = Glib::RefPtr<Gdk::Pixbuf>();
if (!sample) {
return null;
}
/*
Generates crashes, not idea why
using "resolution" now..
gets filled by preroll
auto caps = sample->get_caps();
if (!caps) {
return null;
}
if (caps->empty()) {
return null;
}
if (caps->empty()) {
return null;
}
auto struc = caps->get_structure(0);
int w,h;
if (!struc.get_field("width", w)) {
return null;
}
if (!struc.get_field("height", h)) {
return null;
}
*/
auto buffer = sample->get_buffer();
if (!buffer) {
return null;
}
auto map = Glib::RefPtr<Gst::MapInfo>(new Gst::MapInfo);
if (!buffer->map(map, Gst::MAP_READ)) {
return null;
}
auto mem = new uint8_t[map->get_size()];
std::copy(map->get_data(), map->get_data() + map->get_size(), mem);
buffer->unmap(map);
return Gdk::Pixbuf::create_from_data(mem,
Gdk::COLORSPACE_RGB,
false,
8,
resolution->first,
resolution->second,
GST_ROUND_UP_4( resolution->first*3 ),
[](const guint8* data) {
delete[] data;
});
}