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Add screen sharing window preview

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This commit is contained in:
trilene 2021-02-25 12:00:55 -05:00
parent efe240d609
commit 402bd565cb
3 changed files with 100 additions and 4 deletions
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7
resources/qml/voip/ScreenShare.qml
View file

@ -127,6 +127,13 @@ Popup {
}
}
Button {
text: qsTr("Preview")
onClicked: {
CallManager.previewWindow(windowCombo.currentIndex);
}
}
Button {
text: qsTr("Cancel")
onClicked: {

94
src/CallManager.cpp
View file

@ -24,6 +24,13 @@
#include <xcb/xcb_ewmh.h>
#endif
#ifdef GSTREAMER_AVAILABLE
extern "C"
{
#include "gst/gst.h"
}
#endif
Q_DECLARE_METATYPE(std::vector<mtx::events::msg::CallCandidates::Candidate>)
Q_DECLARE_METATYPE(mtx::events::msg::CallCandidates::Candidate)
Q_DECLARE_METATYPE(mtx::responses::TurnServer)
@ -235,8 +242,8 @@ void
CallManager::syncEvent(const mtx::events::collections::TimelineEvents &event)
{
#ifdef GSTREAMER_AVAILABLE
if (handleEvent_<CallInvite>(event) || handleEvent_<CallCandidates>(event) ||
handleEvent_<CallAnswer>(event) || handleEvent_<CallHangUp>(event))
if (handleEvent<CallInvite>(event) || handleEvent<CallCandidates>(event) ||
handleEvent<CallAnswer>(event) || handleEvent<CallHangUp>(event))
return;
#else
(void)event;
@ -245,7 +252,7 @@ CallManager::syncEvent(const mtx::events::collections::TimelineEvents &event)
template<typename T>
bool
CallManager::handleEvent_(const mtx::events::collections::TimelineEvents &event)
CallManager::handleEvent(const mtx::events::collections::TimelineEvents &event)
{
if (std::holds_alternative<RoomEvent<T>>(event)) {
handleEvent(std::get<RoomEvent<T>>(event));
@ -565,6 +572,87 @@ CallManager::windowList()
return ret;
}
#ifdef GSTREAMER_AVAILABLE
namespace {
GstElement *pipe_ = nullptr;
unsigned int busWatchId_ = 0;
gboolean
newBusMessage(GstBus *bus G_GNUC_UNUSED, GstMessage *msg, gpointer G_GNUC_UNUSED)
{
switch (GST_MESSAGE_TYPE(msg)) {
case GST_MESSAGE_EOS:
if (pipe_) {
gst_element_set_state(GST_ELEMENT(pipe_), GST_STATE_NULL);
gst_object_unref(pipe_);
pipe_ = nullptr;
}
if (busWatchId_) {
g_source_remove(busWatchId_);
busWatchId_ = 0;
}
break;
default:
break;
}
return TRUE;
}
}
#endif
void
CallManager::previewWindow(unsigned int index) const
{
#ifdef GSTREAMER_AVAILABLE
if (windows_.empty() || index >= windows_.size() || !gst_is_initialized())
return;
GstElement *ximagesrc = gst_element_factory_make("ximagesrc", nullptr);
if (!ximagesrc) {
nhlog::ui()->error("Failed to create ximagesrc");
return;
}
GstElement *videoconvert = gst_element_factory_make("videoconvert", nullptr);
GstElement *videoscale = gst_element_factory_make("videoscale", nullptr);
GstElement *capsfilter = gst_element_factory_make("capsfilter", nullptr);
GstElement *ximagesink = gst_element_factory_make("ximagesink", nullptr);
g_object_set(ximagesrc, "use-damage", FALSE, nullptr);
g_object_set(ximagesrc, "show-pointer", FALSE, nullptr);
g_object_set(ximagesrc, "xid", windows_[index].second, nullptr);
GstCaps *caps = gst_caps_new_simple(
"video/x-raw", "width", G_TYPE_INT, 480, "height", G_TYPE_INT, 360, nullptr);
g_object_set(capsfilter, "caps", caps, nullptr);
gst_caps_unref(caps);
pipe_ = gst_pipeline_new(nullptr);
gst_bin_add_many(
GST_BIN(pipe_), ximagesrc, videoconvert, videoscale, capsfilter, ximagesink, nullptr);
if (!gst_element_link_many(
ximagesrc, videoconvert, videoscale, capsfilter, ximagesink, nullptr)) {
nhlog::ui()->error("Failed to link preview window elements");
gst_object_unref(pipe_);
pipe_ = nullptr;
return;
}
if (gst_element_set_state(pipe_, GST_STATE_PLAYING) == GST_STATE_CHANGE_FAILURE) {
nhlog::ui()->error("Unable to start preview pipeline");
gst_object_unref(pipe_);
pipe_ = nullptr;
return;
}
GstBus *bus = gst_pipeline_get_bus(GST_PIPELINE(pipe_));
busWatchId_ = gst_bus_add_watch(bus, newBusMessage, nullptr);
gst_object_unref(bus);
#else
(void)index;
#endif
}
namespace {
std::vector<std::string>
getTurnURIs(const mtx::responses::TurnServer &turnServer)

3
src/CallManager.h
View file

@ -63,6 +63,7 @@ public slots:
void hangUp(
mtx::events::msg::CallHangUp::Reason = mtx::events::msg::CallHangUp::Reason::User);
QStringList windowList();
void previewWindow(unsigned int windowIndex) const;
signals:
void newMessage(const QString &roomid, const mtx::events::msg::CallInvite &);
@ -95,7 +96,7 @@ private:
std::vector<std::pair<QString, uint32_t>> windows_;
template<typename T>
bool handleEvent_(const mtx::events::collections::TimelineEvents &event);
bool handleEvent(const mtx::events::collections::TimelineEvents &event);
void handleEvent(const mtx::events::RoomEvent<mtx::events::msg::CallInvite> &);
void handleEvent(const mtx::events::RoomEvent<mtx::events::msg::CallCandidates> &);
void handleEvent(const mtx::events::RoomEvent<mtx::events::msg::CallAnswer> &);