Differential D29015 Diff 81114 plugins/platforms/drm/screencaststream.h

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plugins/platforms/drm/screencaststream.h

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		1		/*
		2		* Copyright © 2018-2020 Red Hat, Inc
		3		*
		4		* This program is free software; you can redistribute it and/or
		5		* modify it under the terms of the GNU Lesser General Public
		6		* License as published by the Free Software Foundation; either
		7		* version 2 of the License, or (at your option) any later version.
		8		*
		9		* This library is distributed in the hope that it will be useful,
		10		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		11		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
		12		* Lesser General Public License for more details.
		13		*
		14		* You should have received a copy of the GNU Lesser General Public
		15		* License along with this library. If not, see <http://www.gnu.org/licenses/>.
		16		*
		17		* Authors:
		18		* Jan Grulich <jgrulich@redhat.com>
		19		*/
		20
		21		#ifndef SCREEN_CAST_STREAM_H
		22		#define SCREEN_CAST_STREAM_H
		23
		24		#include <QObject>
		25		#include <QSize>
		26
		27		#include <pipewire/pipewire.h>
		28		#include <spa/param/format-utils.h>
		29		#include <spa/param/video/format-utils.h>
		30		#include <spa/param/props.h>
		31		#include "config-kwin.h"
		32
		33		#include <spa/utils/result.h>
		34
		35		namespace KWin
		36		{
		37		class AbstractEglBackend;
		38		class DrmOutput;
		39		class DrmSurfaceBuffer;
		40		}
		41
		42		class ScreenCastStream : public QObject
		43		{
		44		Q_OBJECT
		45		public:
		46		explicit ScreenCastStream(const QSize &resolution, KWin::AbstractEglBackend* backend, QObject *parent = nullptr);
		47		~ScreenCastStream();
		48
		49		static void onCoreError(void data, uint32_t id, int seq, int res, const char message);
		50		static void onStreamParamChanged(void data, uint32_t id, const struct spa_pod format);
		51		static void onStreamStateChanged(void data, pw_stream_state old, pw_stream_state state, const char error_message);
		52		static void onStreamProcess(void *data);
		53
		54		// Public
		55		bool init();
		56		uint framerate();
		57		uint nodeId();
		58		QString error() const {
		59		return m_error;
		60		}
		61
		62		void removeStream();
		63
		64		#if HAVE_GBM
		65		bool recordFrame(struct gbm_bo *bo, quint32 width, quint32 height, quint32 stride);
		66		#endif
		67
		68		void stop();
		69
		70		Q_SIGNALS:
		71		void streamReady(quint32 nodeId);
		72		void startStreaming();
		73		void stopStreaming(uint nodeId);
		74
		75		private:
		76		pw_stream *createStream();
		77		public:
		78		struct pw_context *pwContext = nullptr;
		79		struct pw_core *pwCore = nullptr;
		80		struct pw_stream *pwStream = nullptr;
		81		struct pw_thread_loop *pwMainLoop = nullptr;
		82
		83		spa_hook coreListener;
		84		spa_hook streamListener;
		85
		86		// event handlers
		87		pw_core_events pwCoreEvents = {};
		88		pw_stream_events pwStreamEvents = {};
		89
		90		uint32_t pwNodeId = 0;
		91
		92		QSize resolution;
		93		bool m_stopped = false;
		94
		95		spa_video_info_raw videoFormat;
		96		KWin::AbstractEglBackend* const m_backend;
		97		QString m_error;
		98
		99		};
		100
		101		#endif // SCREEN_CAST_STREAM_H