+++ /dev/null
-#ifndef _CEF_CAPTURE_H
-#define _CEF_CAPTURE_H 1
-
-// CEFCapture represents a single CEF virtual capture card (usually, there would only
-// be one globally), similar to FFmpegCapture. It owns a CefBrowser, which calls
-// OnPaint() back every time it has a frame. Note that it runs asynchronously;
-// there's no way to get frame-perfect sync.
-
-#include <assert.h>
-#include <stdint.h>
-
-#include <condition_variable>
-#include <functional>
-#include <map>
-#include <memory>
-#include <mutex>
-#include <set>
-#include <string>
-#include <thread>
-#include <vector>
-
-#undef CHECK
-#include <cef_client.h>
-#include <cef_base.h>
-#include <cef_render_handler.h>
-
-#include <bmusb/bmusb.h>
-
-class CefBrowser;
-class CefRect;
-class CEFCapture;
-
-// A helper class for CEFCapture to proxy information to CEF, without becoming
-// CEF-refcounted itself.
-class NageruCEFClient : public CefClient, public CefRenderHandler, public CefLoadHandler
-{
-public:
- NageruCEFClient(CEFCapture *parent)
- : parent(parent) {}
-
- CefRefPtr<CefRenderHandler> GetRenderHandler() override
- {
- return this;
- }
-
- CefRefPtr<CefLoadHandler> GetLoadHandler() override
- {
- return this;
- }
-
- // CefRenderHandler.
-
- void OnPaint(CefRefPtr<CefBrowser> browser, PaintElementType type, const RectList &dirtyRects, const void *buffer, int width, int height) override;
-
- bool GetViewRect(CefRefPtr<CefBrowser> browser, CefRect &rect) override;
-
- // CefLoadHandler.
-
- void OnLoadEnd(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame> frame, int httpStatusCode) override;
-
-private:
- CEFCapture *parent;
-
- IMPLEMENT_REFCOUNTING(NageruCEFClient);
-};
-
-class CEFCapture : public bmusb::CaptureInterface
-{
-public:
- CEFCapture(const std::string &url, unsigned width, unsigned height);
- ~CEFCapture();
-
- void set_card_index(int card_index)
- {
- this->card_index = card_index;
- }
-
- int get_card_index() const
- {
- return card_index;
- }
-
- void set_url(const std::string &url);
- void reload();
- void set_max_fps(int max_fps);
- void execute_javascript_async(const std::string &js);
- void resize(unsigned width, unsigned height);
- void request_new_frame();
-
- // Callbacks from NageruCEFClient.
- void OnPaint(const void *buffer, int width, int height);
- bool GetViewRect(CefRect &rect);
- void OnLoadEnd();
-
- // CaptureInterface.
- void set_video_frame_allocator(bmusb::FrameAllocator *allocator) override
- {
- video_frame_allocator = allocator;
- if (owned_video_frame_allocator.get() != allocator) {
- owned_video_frame_allocator.reset();
- }
- }
-
- bmusb::FrameAllocator *get_video_frame_allocator() override
- {
- return video_frame_allocator;
- }
-
- // Does not take ownership.
- void set_audio_frame_allocator(bmusb::FrameAllocator *allocator) override
- {
- }
-
- bmusb::FrameAllocator *get_audio_frame_allocator() override
- {
- return nullptr;
- }
-
- void set_frame_callback(bmusb::frame_callback_t callback) override
- {
- frame_callback = callback;
- }
-
- void set_dequeue_thread_callbacks(std::function<void()> init, std::function<void()> cleanup) override
- {
- dequeue_init_callback = init;
- dequeue_cleanup_callback = cleanup;
- has_dequeue_callbacks = true;
- }
-
- std::string get_description() const override
- {
- return description;
- }
-
- void configure_card() override;
- void start_bm_capture() override;
- void stop_dequeue_thread() override;
- bool get_disconnected() const override { return false; }
-
- std::set<bmusb::PixelFormat> get_available_pixel_formats() const override
- {
- return std::set<bmusb::PixelFormat>{ bmusb::PixelFormat_8BitBGRA };
- }
-
- void set_pixel_format(bmusb::PixelFormat pixel_format) override
- {
- assert(pixel_format == bmusb::PixelFormat_8BitBGRA);
- }
-
- bmusb::PixelFormat get_current_pixel_format() const override
- {
- return bmusb::PixelFormat_8BitBGRA;
- }
-
- std::map<uint32_t, bmusb::VideoMode> get_available_video_modes() const override;
- void set_video_mode(uint32_t video_mode_id) override;
- uint32_t get_current_video_mode() const override { return 0; }
-
- std::map<uint32_t, std::string> get_available_video_inputs() const override;
- void set_video_input(uint32_t video_input_id) override;
- uint32_t get_current_video_input() const override { return 0; }
-
- std::map<uint32_t, std::string> get_available_audio_inputs() const override;
- void set_audio_input(uint32_t audio_input_id) override;
- uint32_t get_current_audio_input() const override { return 0; }
-
-private:
- void post_to_cef_ui_thread(std::function<void()> &&func, int64_t delay_ms = 0);
-
- CefRefPtr<NageruCEFClient> cef_client;
-
- // Needs to be different from browser_mutex below, since GetViewRect
- // can be called unpredictably from when we are already holding
- // <browser_mutex>.
- std::mutex resolution_mutex;
- unsigned width, height; // Under <resolution_mutex>.
-
- int card_index = -1;
-
- bool has_dequeue_callbacks = false;
- std::function<void()> dequeue_init_callback = nullptr;
- std::function<void()> dequeue_cleanup_callback = nullptr;
-
- bmusb::FrameAllocator *video_frame_allocator = nullptr;
- std::unique_ptr<bmusb::FrameAllocator> owned_video_frame_allocator;
- bmusb::frame_callback_t frame_callback = nullptr;
-
- std::string description, start_url;
- std::atomic<int> max_fps{60};
-
- // Needs to be recursive because the lambda in OnPaint could cause
- // OnPaint itself to be called.
- std::recursive_mutex browser_mutex;
- CefRefPtr<CefBrowser> browser; // Under <browser_mutex>.
-
- // Tasks waiting for <browser> to get ready. Under <browser_mutex>.
- std::vector<std::function<void()>> deferred_tasks;
-
- // Whether the last set_url() (includes the implicit one in the constructor)
- // has loaded yet. Accessed from the CEF thread only.
- bool loaded = false;
-
- // JavaScript waiting for the first page (well, any page) to have loaded.
- // Accessed from the CEF thread only.
- std::vector<std::string> deferred_javascript;
-
- int timecode = 0;
-};
-
-#endif // !defined(_CEF_CAPTURE_H)
projects / nageru / blobdiff