browser-client.hpp

/******************************************************************************
 Copyright (C) 2014 by John R. Bradley <jrb@turrettech.com>
 Copyright (C) 2023 by Lain Bailey <lain@obsproject.com>

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 2 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/

#pragma once

#include <graphics/graphics.h>
#include <util/threading.h>
#include "cef-headers.hpp"
#include "obs-browser-source.hpp"

struct BrowserSource;

class BrowserClient : public CefClient,
		      public CefDisplayHandler,
		      public CefLifeSpanHandler,
		      public CefRequestHandler,
#if CHROME_VERSION_BUILD >= 4638
		      public CefResourceRequestHandler,
#endif
		      public CefContextMenuHandler,
		      public CefRenderHandler,
		      public CefAudioHandler,
		      public CefLoadHandler {

	bool sharing_available = false;
	bool reroute_audio = true;
	ControlLevel webpage_control_level = DEFAULT_CONTROL_LEVEL;

	inline bool valid() const;

	void UpdateExtraTexture();

public:
	BrowserSource *bs;
	CefRect popupRect;
	CefRect originalPopupRect;

#if CHROME_VERSION_BUILD >= 4103
	int sample_rate;
	int channels;
	ChannelLayout channel_layout;
	int frames_per_buffer;
#endif
	inline BrowserClient(BrowserSource *bs_, bool sharing_avail, bool reroute_audio_,
			     ControlLevel webpage_control_level_)
		: sharing_available(sharing_avail),
		  reroute_audio(reroute_audio_),
		  webpage_control_level(webpage_control_level_),
		  bs(bs_)
	{
	}

	/* CefClient */
	virtual CefRefPtr<CefLoadHandler> GetLoadHandler() override;
	virtual CefRefPtr<CefRenderHandler> GetRenderHandler() override;
	virtual CefRefPtr<CefDisplayHandler> GetDisplayHandler() override;
	virtual CefRefPtr<CefLifeSpanHandler> GetLifeSpanHandler() override;
#if CHROME_VERSION_BUILD >= 4638
	virtual CefRefPtr<CefRequestHandler> GetRequestHandler() override;
#endif
	virtual CefRefPtr<CefContextMenuHandler> GetContextMenuHandler() override;
	virtual CefRefPtr<CefAudioHandler> GetAudioHandler() override;

	virtual bool OnProcessMessageReceived(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame> frame,
					      CefProcessId source_process,
					      CefRefPtr<CefProcessMessage> message) override;

	/* CefDisplayHandler */
	virtual bool OnConsoleMessage(CefRefPtr<CefBrowser> browser, cef_log_severity_t level, const CefString &message,
				      const CefString &source, int line) override;
	virtual bool OnTooltip(CefRefPtr<CefBrowser> browser, CefString &text) override;

	/* CefLifeSpanHandler */
	virtual bool OnBeforePopup(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame> frame,
				   const CefString &target_url, const CefString &target_frame_name,
				   cef_window_open_disposition_t target_disposition, bool user_gesture,
				   const CefPopupFeatures &popupFeatures, CefWindowInfo &windowInfo,
				   CefRefPtr<CefClient> &client, CefBrowserSettings &settings,
				   CefRefPtr<CefDictionaryValue> &extra_info, bool *no_javascript_access) override;
#if CHROME_VERSION_BUILD >= 4638
	/* CefRequestHandler */
	virtual CefRefPtr<CefResourceRequestHandler>
	GetResourceRequestHandler(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame> frame,
				  CefRefPtr<CefRequest> request, bool is_navigation, bool is_download,
				  const CefString &request_initiator, bool &disable_default_handling) override;

	/* CefResourceRequestHandler */
	virtual CefResourceRequestHandler::ReturnValue OnBeforeResourceLoad(CefRefPtr<CefBrowser> browser,
									    CefRefPtr<CefFrame> frame,
									    CefRefPtr<CefRequest> request,
									    CefRefPtr<CefCallback> callback) override;
#endif

	/* CefContextMenuHandler */
	virtual void OnBeforeContextMenu(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame> frame,
					 CefRefPtr<CefContextMenuParams> params,
					 CefRefPtr<CefMenuModel> model) override;

	/* CefRenderHandler */
	virtual void GetViewRect(CefRefPtr<CefBrowser> browser, CefRect &rect) override;
	virtual void OnPaint(CefRefPtr<CefBrowser> browser, PaintElementType type, const RectList &dirtyRects,
			     const void *buffer, int width, int height) override;
#ifdef ENABLE_BROWSER_SHARED_TEXTURE
	virtual void OnAcceleratedPaint(CefRefPtr<CefBrowser> browser, PaintElementType type,
					const RectList &dirtyRects,
#if CHROME_VERSION_BUILD >= 6367
					const CefAcceleratedPaintInfo &info) override;
#else
					void *shared_handle) override;
#endif
#ifdef CEF_ON_ACCELERATED_PAINT2
	virtual void OnAcceleratedPaint2(CefRefPtr<CefBrowser> browser, PaintElementType type,
					 const RectList &dirtyRects, void *shared_handle, bool new_texture) override;
#endif
#endif
#if CHROME_VERSION_BUILD >= 4103
	virtual void OnAudioStreamPacket(CefRefPtr<CefBrowser> browser, const float **data, int frames,
					 int64_t pts) override;

	virtual void OnAudioStreamStopped(CefRefPtr<CefBrowser> browser) override;

	virtual void OnAudioStreamStarted(CefRefPtr<CefBrowser> browser, const CefAudioParameters &params,
					  int channels) override;
	virtual void OnAudioStreamError(CefRefPtr<CefBrowser> browser, const CefString &message) override;
	const int kFramesPerBuffer = 1024;
	virtual bool GetAudioParameters(CefRefPtr<CefBrowser> browser, CefAudioParameters &params) override;
#else
	virtual void OnAudioStreamPacket(CefRefPtr<CefBrowser> browser, int audio_stream_id, const float **data,
					 int frames, int64_t pts) override;

	virtual void OnAudioStreamStopped(CefRefPtr<CefBrowser> browser, int audio_stream_id);

	virtual void OnAudioStreamStarted(CefRefPtr<CefBrowser> browser, int audio_stream_id, int channels,
					  ChannelLayout channel_layout, int sample_rate,
					  int frames_per_buffer) override;
#endif
	/* CefLoadHandler */
	virtual void OnLoadEnd(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame> frame, int httpStatusCode) override;

	IMPLEMENT_REFCOUNTING(BrowserClient);
};