8 #include "cef_capture.h"
9 #include "nageru_cef_app.h"
13 #include <cef_browser.h>
14 #include <cef_client.h>
16 #include "bmusb/bmusb.h"
19 using namespace std::chrono;
20 using namespace bmusb;
22 extern CefRefPtr<NageruCefApp> cef_app;
24 CEFCapture::CEFCapture(const string &url, unsigned width, unsigned height)
25 : cef_client(new NageruCEFClient(width, height, this)),
31 snprintf(buf, sizeof(buf), "CEF card %d", card_index + 1);
35 CEFCapture::~CEFCapture()
37 if (has_dequeue_callbacks) {
38 dequeue_cleanup_callback();
42 void CEFCapture::post_to_cef_ui_thread(std::function<void()> &&func)
44 lock_guard<mutex> lock(browser_mutex);
45 if (browser != nullptr) {
46 CefPostTask(TID_UI, new CEFTaskAdapter(std::move(func)));
48 deferred_tasks.push_back(std::move(func));
52 void CEFCapture::set_url(const string &url)
54 post_to_cef_ui_thread([this, url] {
56 browser->GetMainFrame()->LoadURL(url);
60 void CEFCapture::reload()
62 post_to_cef_ui_thread([this] {
67 void CEFCapture::set_max_fps(int max_fps)
69 post_to_cef_ui_thread([this, max_fps] {
70 browser->GetHost()->SetWindowlessFrameRate(max_fps);
71 this->max_fps = max_fps;
75 void CEFCapture::execute_javascript_async(const string &js)
77 post_to_cef_ui_thread([this, js] {
79 CefString script_url("<theme eval>");
81 browser->GetMainFrame()->ExecuteJavaScript(js, script_url, start_line);
83 deferred_javascript.push_back(js);
88 void CEFCapture::OnPaint(const void *buffer, int width, int height)
90 steady_clock::time_point timestamp = steady_clock::now();
92 VideoFormat video_format;
93 video_format.width = width;
94 video_format.height = height;
95 video_format.stride = width * 4;
96 video_format.frame_rate_nom = max_fps;
97 video_format.frame_rate_den = 1;
98 video_format.has_signal = true;
99 video_format.is_connected = true;
101 FrameAllocator::Frame video_frame = video_frame_allocator->alloc_frame();
102 if (video_frame.data != nullptr) {
103 assert(video_frame.size >= unsigned(width * height * 4));
104 assert(!video_frame.interleaved);
105 memcpy(video_frame.data, buffer, width * height * 4);
106 video_frame.len = video_format.stride * height;
107 video_frame.received_timestamp = timestamp;
109 frame_callback(timecode++,
110 video_frame, 0, video_format,
111 FrameAllocator::Frame(), 0, AudioFormat());
114 void CEFCapture::OnLoadEnd()
116 post_to_cef_ui_thread([this] {
118 for (const string &js : deferred_javascript) {
119 CefString script_url("<theme eval>");
121 browser->GetMainFrame()->ExecuteJavaScript(js, script_url, start_line);
123 deferred_javascript.clear();
127 #define FRAME_SIZE (8 << 20) // 8 MB.
129 void CEFCapture::configure_card()
131 if (video_frame_allocator == nullptr) {
132 owned_video_frame_allocator.reset(new MallocFrameAllocator(FRAME_SIZE, NUM_QUEUED_VIDEO_FRAMES));
133 set_video_frame_allocator(owned_video_frame_allocator.get());
137 void CEFCapture::start_bm_capture()
139 cef_app->initialize_cef();
141 CefPostTask(TID_UI, new CEFTaskAdapter([this]{
142 lock_guard<mutex> lock(browser_mutex);
144 CefBrowserSettings browser_settings;
145 browser_settings.web_security = cef_state_t::STATE_DISABLED;
146 browser_settings.webgl = cef_state_t::STATE_ENABLED;
147 browser_settings.windowless_frame_rate = max_fps;
149 CefWindowInfo window_info;
150 window_info.SetAsWindowless(0);
151 browser = CefBrowserHost::CreateBrowserSync(window_info, cef_client, start_url, browser_settings, nullptr);
152 for (function<void()> &task : deferred_tasks) {
155 deferred_tasks.clear();
159 void CEFCapture::stop_dequeue_thread()
161 lock_guard<mutex> lock(browser_mutex);
162 cef_app->close_browser(browser);
163 browser = nullptr; // Or unref_cef() will be sad.
164 cef_app->unref_cef();
167 std::map<uint32_t, VideoMode> CEFCapture::get_available_video_modes() const
172 snprintf(buf, sizeof(buf), "%ux%u", width, height);
175 mode.autodetect = false;
177 mode.height = height;
178 mode.frame_rate_num = max_fps;
179 mode.frame_rate_den = 1;
180 mode.interlaced = false;
182 return {{ 0, mode }};
185 std::map<uint32_t, std::string> CEFCapture::get_available_video_inputs() const
187 return {{ 0, "HTML video input" }};
190 std::map<uint32_t, std::string> CEFCapture::get_available_audio_inputs() const
192 return {{ 0, "Fake HTML audio input (silence)" }};
195 void CEFCapture::set_video_mode(uint32_t video_mode_id)
197 assert(video_mode_id == 0);
200 void CEFCapture::set_video_input(uint32_t video_input_id)
202 assert(video_input_id == 0);
205 void CEFCapture::set_audio_input(uint32_t audio_input_id)
207 assert(audio_input_id == 0);
210 void NageruCEFClient::OnPaint(CefRefPtr<CefBrowser> browser, PaintElementType type, const RectList &dirtyRects, const void *buffer, int width, int height)
212 parent->OnPaint(buffer, width, height);
215 bool NageruCEFClient::GetViewRect(CefRefPtr<CefBrowser> browser, CefRect &rect)
217 rect = CefRect(0, 0, width, height);
221 void NageruCEFClient::OnLoadEnd(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame> frame, int httpStatusCode)