3 * Copyright 2012, Google Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
8 * 1. Redistributions of source code must retain the above copyright notice,
9 * this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright notice,
11 * this list of conditions and the following disclaimer in the documentation
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13 * 3. The name of the author may not be used to endorse or promote products
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16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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29 #include "talk/examples/peerconnection/client/linux/main_wnd.h"
31 #include <gdk/gdkkeysyms.h>
35 #include "talk/examples/peerconnection/client/defaults.h"
36 #include "webrtc/base/common.h"
37 #include "webrtc/base/logging.h"
38 #include "webrtc/base/stringutils.h"
45 // Simple static functions that simply forward the callback to the
46 // GtkMainWnd instance.
49 gboolean OnDestroyedCallback(GtkWidget* widget, GdkEvent* event,
51 reinterpret_cast<GtkMainWnd*>(data)->OnDestroyed(widget, event);
55 void OnClickedCallback(GtkWidget* widget, gpointer data) {
56 reinterpret_cast<GtkMainWnd*>(data)->OnClicked(widget);
59 gboolean SimulateButtonClick(gpointer button) {
60 g_signal_emit_by_name(button, "clicked");
64 gboolean OnKeyPressCallback(GtkWidget* widget, GdkEventKey* key,
66 reinterpret_cast<GtkMainWnd*>(data)->OnKeyPress(widget, key);
70 void OnRowActivatedCallback(GtkTreeView* tree_view, GtkTreePath* path,
71 GtkTreeViewColumn* column, gpointer data) {
72 reinterpret_cast<GtkMainWnd*>(data)->OnRowActivated(tree_view, path, column);
75 gboolean SimulateLastRowActivated(gpointer data) {
76 GtkTreeView* tree_view = reinterpret_cast<GtkTreeView*>(data);
77 GtkTreeModel* model = gtk_tree_view_get_model(tree_view);
79 // "if iter is NULL, then the number of toplevel nodes is returned."
80 int rows = gtk_tree_model_iter_n_children(model, NULL);
81 GtkTreePath* lastpath = gtk_tree_path_new_from_indices(rows - 1, -1);
83 // Select the last item in the list
84 GtkTreeSelection* selection = gtk_tree_view_get_selection(tree_view);
85 gtk_tree_selection_select_path(selection, lastpath);
87 // Our TreeView only has one column, so it is column 0.
88 GtkTreeViewColumn* column = gtk_tree_view_get_column(tree_view, 0);
90 gtk_tree_view_row_activated(tree_view, lastpath, column);
92 gtk_tree_path_free(lastpath);
96 // Creates a tree view, that we use to display the list of peers.
97 void InitializeList(GtkWidget* list) {
98 GtkCellRenderer* renderer = gtk_cell_renderer_text_new();
99 GtkTreeViewColumn* column = gtk_tree_view_column_new_with_attributes(
100 "List Items", renderer, "text", 0, NULL);
101 gtk_tree_view_append_column(GTK_TREE_VIEW(list), column);
102 GtkListStore* store = gtk_list_store_new(2, G_TYPE_STRING, G_TYPE_INT);
103 gtk_tree_view_set_model(GTK_TREE_VIEW(list), GTK_TREE_MODEL(store));
104 g_object_unref(store);
107 // Adds an entry to a tree view.
108 void AddToList(GtkWidget* list, const gchar* str, int value) {
109 GtkListStore* store = GTK_LIST_STORE(
110 gtk_tree_view_get_model(GTK_TREE_VIEW(list)));
113 gtk_list_store_append(store, &iter);
114 gtk_list_store_set(store, &iter, 0, str, 1, value, -1);
117 struct UIThreadCallbackData {
118 explicit UIThreadCallbackData(MainWndCallback* cb, int id, void* d)
119 : callback(cb), msg_id(id), data(d) {}
120 MainWndCallback* callback;
125 gboolean HandleUIThreadCallback(gpointer data) {
126 UIThreadCallbackData* cb_data = reinterpret_cast<UIThreadCallbackData*>(data);
127 cb_data->callback->UIThreadCallback(cb_data->msg_id, cb_data->data);
132 gboolean Redraw(gpointer data) {
133 GtkMainWnd* wnd = reinterpret_cast<GtkMainWnd*>(data);
140 // GtkMainWnd implementation.
143 GtkMainWnd::GtkMainWnd(const char* server, int port, bool autoconnect,
145 : window_(NULL), draw_area_(NULL), vbox_(NULL), server_edit_(NULL),
146 port_edit_(NULL), peer_list_(NULL), callback_(NULL),
147 server_(server), autoconnect_(autoconnect), autocall_(autocall) {
149 sprintfn(buffer, sizeof(buffer), "%i", port);
153 GtkMainWnd::~GtkMainWnd() {
157 void GtkMainWnd::RegisterObserver(MainWndCallback* callback) {
158 callback_ = callback;
161 bool GtkMainWnd::IsWindow() {
162 return window_ != NULL && GTK_IS_WINDOW(window_);
165 void GtkMainWnd::MessageBox(const char* caption, const char* text,
167 GtkWidget* dialog = gtk_message_dialog_new(GTK_WINDOW(window_),
168 GTK_DIALOG_DESTROY_WITH_PARENT,
169 is_error ? GTK_MESSAGE_ERROR : GTK_MESSAGE_INFO,
170 GTK_BUTTONS_CLOSE, "%s", text);
171 gtk_window_set_title(GTK_WINDOW(dialog), caption);
172 gtk_dialog_run(GTK_DIALOG(dialog));
173 gtk_widget_destroy(dialog);
176 MainWindow::UI GtkMainWnd::current_ui() {
178 return CONNECT_TO_SERVER;
187 void GtkMainWnd::StartLocalRenderer(webrtc::VideoTrackInterface* local_video) {
188 local_renderer_.reset(new VideoRenderer(this, local_video));
191 void GtkMainWnd::StopLocalRenderer() {
192 local_renderer_.reset();
195 void GtkMainWnd::StartRemoteRenderer(webrtc::VideoTrackInterface* remote_video) {
196 remote_renderer_.reset(new VideoRenderer(this, remote_video));
199 void GtkMainWnd::StopRemoteRenderer() {
200 remote_renderer_.reset();
203 void GtkMainWnd::QueueUIThreadCallback(int msg_id, void* data) {
204 g_idle_add(HandleUIThreadCallback,
205 new UIThreadCallbackData(callback_, msg_id, data));
208 bool GtkMainWnd::Create() {
209 ASSERT(window_ == NULL);
211 window_ = gtk_window_new(GTK_WINDOW_TOPLEVEL);
213 gtk_window_set_position(GTK_WINDOW(window_), GTK_WIN_POS_CENTER);
214 gtk_window_set_default_size(GTK_WINDOW(window_), 640, 480);
215 gtk_window_set_title(GTK_WINDOW(window_), "PeerConnection client");
216 g_signal_connect(G_OBJECT(window_), "delete-event",
217 G_CALLBACK(&OnDestroyedCallback), this);
218 g_signal_connect(window_, "key-press-event", G_CALLBACK(OnKeyPressCallback),
224 return window_ != NULL;
227 bool GtkMainWnd::Destroy() {
231 gtk_widget_destroy(window_);
237 void GtkMainWnd::SwitchToConnectUI() {
238 LOG(INFO) << __FUNCTION__;
241 ASSERT(vbox_ == NULL);
243 gtk_container_set_border_width(GTK_CONTAINER(window_), 10);
246 gtk_widget_destroy(peer_list_);
250 vbox_ = gtk_vbox_new(FALSE, 5);
251 GtkWidget* valign = gtk_alignment_new(0, 1, 0, 0);
252 gtk_container_add(GTK_CONTAINER(vbox_), valign);
253 gtk_container_add(GTK_CONTAINER(window_), vbox_);
255 GtkWidget* hbox = gtk_hbox_new(FALSE, 5);
257 GtkWidget* label = gtk_label_new("Server");
258 gtk_container_add(GTK_CONTAINER(hbox), label);
260 server_edit_ = gtk_entry_new();
261 gtk_entry_set_text(GTK_ENTRY(server_edit_), server_.c_str());
262 gtk_widget_set_size_request(server_edit_, 400, 30);
263 gtk_container_add(GTK_CONTAINER(hbox), server_edit_);
265 port_edit_ = gtk_entry_new();
266 gtk_entry_set_text(GTK_ENTRY(port_edit_), port_.c_str());
267 gtk_widget_set_size_request(port_edit_, 70, 30);
268 gtk_container_add(GTK_CONTAINER(hbox), port_edit_);
270 GtkWidget* button = gtk_button_new_with_label("Connect");
271 gtk_widget_set_size_request(button, 70, 30);
272 g_signal_connect(button, "clicked", G_CALLBACK(OnClickedCallback), this);
273 gtk_container_add(GTK_CONTAINER(hbox), button);
275 GtkWidget* halign = gtk_alignment_new(1, 0, 0, 0);
276 gtk_container_add(GTK_CONTAINER(halign), hbox);
277 gtk_box_pack_start(GTK_BOX(vbox_), halign, FALSE, FALSE, 0);
279 gtk_widget_show_all(window_);
282 g_idle_add(SimulateButtonClick, button);
285 void GtkMainWnd::SwitchToPeerList(const Peers& peers) {
286 LOG(INFO) << __FUNCTION__;
289 gtk_container_set_border_width(GTK_CONTAINER(window_), 0);
291 gtk_widget_destroy(vbox_);
295 } else if (draw_area_) {
296 gtk_widget_destroy(draw_area_);
298 draw_buffer_.reset();
301 peer_list_ = gtk_tree_view_new();
302 g_signal_connect(peer_list_, "row-activated",
303 G_CALLBACK(OnRowActivatedCallback), this);
304 gtk_tree_view_set_headers_visible(GTK_TREE_VIEW(peer_list_), FALSE);
305 InitializeList(peer_list_);
306 gtk_container_add(GTK_CONTAINER(window_), peer_list_);
307 gtk_widget_show_all(window_);
309 GtkListStore* store =
310 GTK_LIST_STORE(gtk_tree_view_get_model(GTK_TREE_VIEW(peer_list_)));
311 gtk_list_store_clear(store);
314 AddToList(peer_list_, "List of currently connected peers:", -1);
315 for (Peers::const_iterator i = peers.begin(); i != peers.end(); ++i)
316 AddToList(peer_list_, i->second.c_str(), i->first);
318 if (autocall_ && peers.begin() != peers.end())
319 g_idle_add(SimulateLastRowActivated, peer_list_);
322 void GtkMainWnd::SwitchToStreamingUI() {
323 LOG(INFO) << __FUNCTION__;
325 ASSERT(draw_area_ == NULL);
327 gtk_container_set_border_width(GTK_CONTAINER(window_), 0);
329 gtk_widget_destroy(peer_list_);
333 draw_area_ = gtk_drawing_area_new();
334 gtk_container_add(GTK_CONTAINER(window_), draw_area_);
336 gtk_widget_show_all(window_);
339 void GtkMainWnd::OnDestroyed(GtkWidget* widget, GdkEvent* event) {
349 void GtkMainWnd::OnClicked(GtkWidget* widget) {
350 // Make the connect button insensitive, so that it cannot be clicked more than
351 // once. Now that the connection includes auto-retry, it should not be
352 // necessary to click it more than once.
353 gtk_widget_set_sensitive(widget, false);
354 server_ = gtk_entry_get_text(GTK_ENTRY(server_edit_));
355 port_ = gtk_entry_get_text(GTK_ENTRY(port_edit_));
356 int port = port_.length() ? atoi(port_.c_str()) : 0;
357 callback_->StartLogin(server_, port);
360 void GtkMainWnd::OnKeyPress(GtkWidget* widget, GdkEventKey* key) {
361 if (key->type == GDK_KEY_PRESS) {
362 switch (key->keyval) {
365 callback_->DisconnectFromCurrentPeer();
366 } else if (peer_list_) {
367 callback_->DisconnectFromServer();
375 } else if (peer_list_) {
376 // OnRowActivated will be called automatically when the user
387 void GtkMainWnd::OnRowActivated(GtkTreeView* tree_view, GtkTreePath* path,
388 GtkTreeViewColumn* column) {
389 ASSERT(peer_list_ != NULL);
392 GtkTreeSelection* selection =
393 gtk_tree_view_get_selection(GTK_TREE_VIEW(tree_view));
394 if (gtk_tree_selection_get_selected(selection, &model, &iter)) {
397 gtk_tree_model_get(model, &iter, 0, &text, 1, &id, -1);
399 callback_->ConnectToPeer(id);
404 void GtkMainWnd::OnRedraw() {
407 VideoRenderer* remote_renderer = remote_renderer_.get();
408 if (remote_renderer && remote_renderer->image() != NULL &&
409 draw_area_ != NULL) {
410 int width = remote_renderer->width();
411 int height = remote_renderer->height();
413 if (!draw_buffer_.get()) {
414 draw_buffer_size_ = (width * height * 4) * 4;
415 draw_buffer_.reset(new uint8[draw_buffer_size_]);
416 gtk_widget_set_size_request(draw_area_, width * 2, height * 2);
419 const uint32* image = reinterpret_cast<const uint32*>(
420 remote_renderer->image());
421 uint32* scaled = reinterpret_cast<uint32*>(draw_buffer_.get());
422 for (int r = 0; r < height; ++r) {
423 for (int c = 0; c < width; ++c) {
425 scaled[x] = scaled[x + 1] = image[c];
428 uint32* prev_line = scaled;
430 memcpy(scaled, prev_line, (width * 2) * 4);
436 VideoRenderer* local_renderer = local_renderer_.get();
437 if (local_renderer && local_renderer->image()) {
438 image = reinterpret_cast<const uint32*>(local_renderer->image());
439 scaled = reinterpret_cast<uint32*>(draw_buffer_.get());
440 // Position the local preview on the right side.
441 scaled += (width * 2) - (local_renderer->width() / 2);
444 // ... towards the bottom.
445 scaled += (height * width * 4) -
446 ((local_renderer->height() / 2) *
447 (local_renderer->width() / 2) * 4);
449 scaled -= (width * 2) * 5;
450 for (int r = 0; r < local_renderer->height(); r += 2) {
451 for (int c = 0; c < local_renderer->width(); c += 2) {
452 scaled[c / 2] = image[c + r * local_renderer->width()];
458 gdk_draw_rgb_32_image(draw_area_->window,
459 draw_area_->style->fg_gc[GTK_STATE_NORMAL],
472 GtkMainWnd::VideoRenderer::VideoRenderer(
473 GtkMainWnd* main_wnd,
474 webrtc::VideoTrackInterface* track_to_render)
478 rendered_track_(track_to_render) {
479 rendered_track_->AddRenderer(this);
482 GtkMainWnd::VideoRenderer::~VideoRenderer() {
483 rendered_track_->RemoveRenderer(this);
486 void GtkMainWnd::VideoRenderer::SetSize(int width, int height) {
490 image_.reset(new uint8[width * height * 4]);
494 void GtkMainWnd::VideoRenderer::RenderFrame(const cricket::VideoFrame* frame) {
497 int size = width_ * height_ * 4;
498 // TODO: Convert directly to RGBA
499 frame->ConvertToRgbBuffer(cricket::FOURCC_ARGB,
503 // Convert the B,G,R,A frame to R,G,B,A, which is accepted by GTK.
504 // The 'A' is just padding for GTK, so we can use it as temp.
505 uint8* pix = image_.get();
506 uint8* end = image_.get() + size;
508 pix[3] = pix[0]; // Save B to A.
509 pix[0] = pix[2]; // Set Red.
510 pix[2] = pix[3]; // Set Blue.
511 pix[3] = 0xFF; // Fixed Alpha.
517 g_idle_add(Redraw, main_wnd_);