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] {
55 browser->GetMainFrame()->LoadURL(url);
59 void CEFCapture::reload()
61 post_to_cef_ui_thread([this] {
66 void CEFCapture::set_max_fps(int max_fps)
68 post_to_cef_ui_thread([this, max_fps] {
69 browser->GetHost()->SetWindowlessFrameRate(max_fps);
70 this->max_fps = max_fps;
74 void CEFCapture::OnPaint(const void *buffer, int width, int height)
76 steady_clock::time_point timestamp = steady_clock::now();
78 VideoFormat video_format;
79 video_format.width = width;
80 video_format.height = height;
81 video_format.stride = width * 4;
82 video_format.frame_rate_nom = max_fps;
83 video_format.frame_rate_den = 1;
84 video_format.has_signal = true;
85 video_format.is_connected = true;
87 FrameAllocator::Frame video_frame = video_frame_allocator->alloc_frame();
88 if (video_frame.data != nullptr) {
89 assert(video_frame.size >= unsigned(width * height * 4));
90 assert(!video_frame.interleaved);
91 memcpy(video_frame.data, buffer, width * height * 4);
92 video_frame.len = video_format.stride * height;
93 video_frame.received_timestamp = timestamp;
95 frame_callback(timecode++,
96 video_frame, 0, video_format,
97 FrameAllocator::Frame(), 0, AudioFormat());
100 #define FRAME_SIZE (8 << 20) // 8 MB.
102 void CEFCapture::configure_card()
104 if (video_frame_allocator == nullptr) {
105 owned_video_frame_allocator.reset(new MallocFrameAllocator(FRAME_SIZE, NUM_QUEUED_VIDEO_FRAMES));
106 set_video_frame_allocator(owned_video_frame_allocator.get());
110 void CEFCapture::start_bm_capture()
112 cef_app->initialize_cef();
114 CefPostTask(TID_UI, new CEFTaskAdapter([this]{
115 lock_guard<mutex> lock(browser_mutex);
117 CefBrowserSettings browser_settings;
118 browser_settings.web_security = cef_state_t::STATE_DISABLED;
119 browser_settings.webgl = cef_state_t::STATE_ENABLED;
120 browser_settings.windowless_frame_rate = max_fps;
122 CefWindowInfo window_info;
123 window_info.SetAsWindowless(0);
124 browser = CefBrowserHost::CreateBrowserSync(window_info, cef_client, start_url, browser_settings, nullptr);
125 for (function<void()> &task : deferred_tasks) {
128 deferred_tasks.clear();
132 void CEFCapture::stop_dequeue_thread()
134 lock_guard<mutex> lock(browser_mutex);
135 cef_app->close_browser(browser);
136 browser = nullptr; // Or unref_cef() will be sad.
137 cef_app->unref_cef();
140 std::map<uint32_t, VideoMode> CEFCapture::get_available_video_modes() const
145 snprintf(buf, sizeof(buf), "%ux%u", width, height);
148 mode.autodetect = false;
150 mode.height = height;
151 mode.frame_rate_num = max_fps;
152 mode.frame_rate_den = 1;
153 mode.interlaced = false;
155 return {{ 0, mode }};
158 std::map<uint32_t, std::string> CEFCapture::get_available_video_inputs() const
160 return {{ 0, "HTML video input" }};
163 std::map<uint32_t, std::string> CEFCapture::get_available_audio_inputs() const
165 return {{ 0, "Fake HTML audio input (silence)" }};
168 void CEFCapture::set_video_mode(uint32_t video_mode_id)
170 assert(video_mode_id == 0);
173 void CEFCapture::set_video_input(uint32_t video_input_id)
175 assert(video_input_id == 0);
178 void CEFCapture::set_audio_input(uint32_t audio_input_id)
180 assert(audio_input_id == 0);
183 void NageruCEFClient::OnPaint(CefRefPtr<CefBrowser> browser, PaintElementType type, const RectList &dirtyRects, const void *buffer, int width, int height)
185 parent->OnPaint(buffer, width, height);
188 bool NageruCEFClient::GetViewRect(CefRefPtr<CefBrowser> browser, CefRect &rect)
190 rect = CefRect(0, 0, width, height);