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video: dummy: Support evdev psuedo-device with no video.

This commit is contained in:
Adam Butcher 2022-06-23 16:10:41 +01:00 committed by Sam Lantinga
parent 8f05b4f833
commit 0bcbdfe2bd
3 changed files with 47 additions and 4 deletions
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1
src/video/SDL_sysvideo.h
View File

@ -454,6 +454,7 @@ extern VideoBootStrap RPI_bootstrap;
extern VideoBootStrap KMSDRM_bootstrap;
extern VideoBootStrap KMSDRM_LEGACY_bootstrap;
extern VideoBootStrap DUMMY_bootstrap;
extern VideoBootStrap DUMMY_evdev_bootstrap;
extern VideoBootStrap Wayland_bootstrap;
extern VideoBootStrap NACL_bootstrap;
extern VideoBootStrap VIVANTE_bootstrap;

3
src/video/SDL_video.c
View File

@ -130,6 +130,9 @@ static VideoBootStrap *bootstrap[] = {
#endif
#if SDL_VIDEO_DRIVER_DUMMY
&DUMMY_bootstrap,
#if SDL_INPUT_LINUXEV
&DUMMY_evdev_bootstrap,
#endif
#endif
NULL
};

47
src/video/dummy/SDL_nullvideo.c
View File

@ -49,23 +49,36 @@
#include "SDL_hints.h"
#define DUMMYVID_DRIVER_NAME "dummy"
#define DUMMYVID_DRIVER_EVDEV_NAME "evdev"
/* Initialization/Query functions */
static int DUMMY_VideoInit(_THIS);
static int DUMMY_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode);
static void DUMMY_VideoQuit(_THIS);
#if SDL_INPUT_LINUXEV
static int evdev = 0;
static void DUMMY_EVDEV_Poll(_THIS);
#endif
/* DUMMY driver bootstrap functions */
static int
DUMMY_Available(void)
{
const char *envr = SDL_GetHint(SDL_HINT_VIDEODRIVER);
if ((envr) && (SDL_strcmp(envr, DUMMYVID_DRIVER_NAME) == 0)) {
return (1);
if (envr) {
if (SDL_strcmp(envr, DUMMYVID_DRIVER_NAME) == 0) {
return 1;
}
#if SDL_INPUT_LINUXEV
if (SDL_strcmp(envr, DUMMYVID_DRIVER_EVDEV_NAME) == 0) {
evdev = 1;
return 1;
}
#endif
}
return (0);
return 0;
}
static void
@ -96,6 +109,11 @@ DUMMY_CreateDevice(void)
device->VideoQuit = DUMMY_VideoQuit;
device->SetDisplayMode = DUMMY_SetDisplayMode;
device->PumpEvents = DUMMY_PumpEvents;
#if SDL_INPUT_LINUXEV
if (evdev) {
device->PumpEvents = DUMMY_EVDEV_Poll;
}
#endif
device->CreateWindowFramebuffer = SDL_DUMMY_CreateWindowFramebuffer;
device->UpdateWindowFramebuffer = SDL_DUMMY_UpdateWindowFramebuffer;
device->DestroyWindowFramebuffer = SDL_DUMMY_DestroyWindowFramebuffer;
@ -110,6 +128,19 @@ VideoBootStrap DUMMY_bootstrap = {
DUMMY_CreateDevice
};
#if SDL_INPUT_LINUXEV
VideoBootStrap DUMMY_evdev_bootstrap = {
DUMMYVID_DRIVER_EVDEV_NAME, "SDL dummy video driver with evdev",
DUMMY_CreateDevice
};
void SDL_EVDEV_Init(void);
void SDL_EVDEV_Poll();
void SDL_EVDEV_Quit(void);
static void DUMMY_EVDEV_Poll(_THIS) {
(void) _this;
SDL_EVDEV_Poll();
}
#endif
int
DUMMY_VideoInit(_THIS)
@ -129,6 +160,10 @@ DUMMY_VideoInit(_THIS)
SDL_AddDisplayMode(&_this->displays[0], &mode);
#if SDL_INPUT_LINUXEV
SDL_EVDEV_Init();
#endif
/* We're done! */
return 0;
}
@ -139,9 +174,13 @@ DUMMY_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode)
return 0;
}
void
DUMMY_VideoQuit(_THIS)
{
#if SDL_INPUT_LINUXEV
SDL_EVDEV_Quit();
#endif
}
#endif /* SDL_VIDEO_DRIVER_DUMMY */