LookingGlass/client/include/interface/renderer.h

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/**
* Looking Glass
* Copyright (C) 2017-2021 The Looking Glass Authors
* https://looking-glass.io
*
* 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, write to the Free Software Foundation, Inc., 59
* Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#pragma once
#include <stdint.h>
#include <stdbool.h>
#include "app.h"
#include "common/KVMFR.h"
#include "common/framebuffer.h"
#define IS_LG_RENDERER_VALID(x) \
((x)->get_name && \
(x)->create && \
(x)->initialize && \
(x)->deinitialize && \
(x)->on_restart && \
(x)->on_resize && \
(x)->on_mouse_shape && \
(x)->on_mouse_event && \
(x)->render_startup && \
(x)->render)
typedef struct LG_RendererParams
{
// TTF_Font * font;
// TTF_Font * alertFont;
bool quickSplash;
}
LG_RendererParams;
typedef enum LG_RendererSupport
{
LG_SUPPORTS_DMABUF
}
LG_RendererSupport;
typedef enum LG_RendererRotate
{
LG_ROTATE_0,
LG_ROTATE_90,
LG_ROTATE_180,
LG_ROTATE_270
}
LG_RendererRotate;
// kept out of the enum so gcc doesn't warn when it's missing from a switch
// statement.
#define LG_ROTATE_MAX (LG_ROTATE_270+1)
typedef struct LG_RendererFormat
{
FrameType type; // frame type
unsigned int width; // image width
unsigned int height; // image height
unsigned int stride; // scanline width (zero if compresed)
unsigned int pitch; // scanline bytes (or compressed size)
unsigned int bpp; // bits per pixel (zero if compressed)
LG_RendererRotate rotate; // guest rotation
}
LG_RendererFormat;
typedef struct LG_RendererRect
{
bool valid;
int x;
int y;
int w;
int h;
}
LG_RendererRect;
typedef enum LG_RendererCursor
{
LG_CURSOR_COLOR ,
LG_CURSOR_MONOCHROME ,
LG_CURSOR_MASKED_COLOR
}
LG_RendererCursor;
// returns the friendly name of the renderer
typedef const char * (* LG_RendererGetName)();
// called pre-creation to allow the renderer to register any options it might have
typedef void (* LG_RendererSetup)();
typedef bool (* LG_RendererCreate )(void ** opaque, const LG_RendererParams params, bool * needsOpenGL);
typedef bool (* LG_RendererInitialize )(void * opaque);
typedef void (* LG_RendererDeInitialize )(void * opaque);
typedef bool (* LG_RendererSupports )(void * opaque, LG_RendererSupport support);
typedef void (* LG_RendererOnRestart )(void * opaque);
typedef void (* LG_RendererOnResize )(void * opaque, const int width, const int height, const double scale, const LG_RendererRect destRect, LG_RendererRotate rotate);
typedef bool (* LG_RendererOnMouseShape )(void * opaque, const LG_RendererCursor cursor, const int width, const int height, const int pitch, const uint8_t * data);
typedef bool (* LG_RendererOnMouseEvent )(void * opaque, const bool visible , const int x, const int y);
typedef bool (* LG_RendererOnFrameFormat)(void * opaque, const LG_RendererFormat format, bool useDMA);
typedef bool (* LG_RendererOnFrame )(void * opaque, const FrameBuffer * frame, int dmaFD, const FrameDamageRect * damage, int damageCount);
typedef bool (* LG_RendererRenderStartup)(void * opaque);
typedef bool (* LG_RendererRender )(void * opaque, LG_RendererRotate rotate, const bool newFrame, const bool invalidateWindow);
typedef struct LG_Renderer
{
LG_RendererGetName get_name;
LG_RendererSetup setup;
LG_RendererCreate create;
LG_RendererInitialize initialize;
LG_RendererDeInitialize deinitialize;
LG_RendererSupports supports;
LG_RendererOnRestart on_restart;
LG_RendererOnResize on_resize;
LG_RendererOnMouseShape on_mouse_shape;
LG_RendererOnMouseEvent on_mouse_event;
LG_RendererOnFrameFormat on_frame_format;
LG_RendererOnFrame on_frame;
LG_RendererRenderStartup render_startup;
LG_RendererRender render;
}
LG_Renderer;