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Fix vsync-drm

This commit is contained in:
Avi ד 2018-12-21 17:25:24 -05:00
parent fa98564040
commit 09e372cc9d
1 changed files with 36 additions and 27 deletions
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63
src/vsync.c
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@ -10,8 +10,44 @@
#include "opengl.h" #include "opengl.h"
#endif #endif
#ifdef CONFIG_VSYNC_DRM
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <drm.h>
#include <errno.h>
#include <sys/ioctl.h>
#endif
#include "vsync.h" #include "vsync.h"
#ifdef CONFIG_VSYNC_DRM
/**
* Wait for next VSync, DRM method.
*
* Stolen from: https://github.com/MythTV/mythtv/blob/master/mythtv/libs/libmythtv/vsync.cpp
*/
static int
vsync_drm_wait(session_t *ps) {
int ret = -1;
drm_wait_vblank_t vbl;
vbl.request.type = _DRM_VBLANK_RELATIVE,
vbl.request.sequence = 1;
do {
ret = ioctl(ps->drm_fd, DRM_IOCTL_WAIT_VBLANK, &vbl);
vbl.request.type &= ~_DRM_VBLANK_RELATIVE;
} while (ret && errno == EINTR);
if (ret)
log_error("VBlank ioctl did not work, unimplemented in this drmver?");
return ret;
}
#endif
/** /**
* Initialize DRM VSync. * Initialize DRM VSync.
* *
@ -168,33 +204,6 @@ bool (*const VSYNC_FUNCS_INIT[NUM_VSYNC])(session_t *ps) = {
[VSYNC_OPENGL_MSWC ] = vsync_opengl_mswc_init, [VSYNC_OPENGL_MSWC ] = vsync_opengl_mswc_init,
}; };
#ifdef CONFIG_VSYNC_DRM
/**
* Wait for next VSync, DRM method.
*
* Stolen from: https://github.com/MythTV/mythtv/blob/master/mythtv/libs/libmythtv/vsync.cpp
*/
static int
vsync_drm_wait(session_t *ps) {
int ret = -1;
drm_wait_vblank_t vbl;
vbl.request.type = _DRM_VBLANK_RELATIVE,
vbl.request.sequence = 1;
do {
ret = ioctl(ps->drm_fd, DRM_IOCTL_WAIT_VBLANK, &vbl);
vbl.request.type &= ~_DRM_VBLANK_RELATIVE;
} while (ret && errno == EINTR);
if (ret)
log_error("VBlank ioctl did not work, unimplemented in this drmver?");
return ret;
}
#endif
#ifdef CONFIG_OPENGL #ifdef CONFIG_OPENGL
/** /**
* Wait for next VSync, OpenGL method. * Wait for next VSync, OpenGL method.