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efl/src/lib/ecore_x/xlib/ecore_x_vsync.c

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#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* ifdef HAVE_CONFIG_H */
#include "Ecore.h"
#include "ecore_x_private.h"
#include "Ecore_X.h"
#include "Ecore_Con.h"
#include <string.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <dlfcn.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#define ECORE_X_VSYNC_DRI2 1
static Ecore_X_Window vsync_root = 0;
#ifdef ECORE_X_VSYNC_DRI2
// relevant header bits of dri/drm inlined here to avoid needing external
// headers to build
/// drm
typedef unsigned int drm_magic_t;
typedef enum
{
DRM_VBLANK_ABSOLUTE = 0x00000000,
DRM_VBLANK_RELATIVE = 0x00000001,
DRM_VBLANK_EVENT = 0x04000000,
DRM_VBLANK_FLIP = 0x08000000,
DRM_VBLANK_NEXTONMISS = 0x10000000,
DRM_VBLANK_SECONDARY = 0x20000000,
DRM_VBLANK_SIGNAL = 0x40000000
}
drmVBlankSeqType;
typedef struct _drmVBlankReq
{
drmVBlankSeqType type;
unsigned int sequence;
unsigned long signal;
} drmVBlankReq;
typedef struct _drmVBlankReply
{
drmVBlankSeqType type;
unsigned int sequence;
long tval_sec;
long tval_usec;
} drmVBlankReply;
typedef union _drmVBlank
{
drmVBlankReq request;
drmVBlankReply reply;
} drmVBlank;
#define DRM_EVENT_CONTEXT_VERSION 2
typedef struct _drmEventContext
{
int version;
void (*vblank_handler)(int fd,
unsigned int sequence,
unsigned int tv_sec,
unsigned int tv_usec,
void *user_data);
void (*page_flip_handler)(int fd,
unsigned int sequence,
unsigned int tv_sec,
unsigned int tv_usec,
void *user_data);
} drmEventContext;
static int (*sym_drmClose)(int fd) = NULL;
static int (*sym_drmGetMagic)(int fd,
drm_magic_t *magic) = NULL;
static int (*sym_drmWaitVBlank)(int fd,
drmVBlank *vbl) = NULL;
static int (*sym_drmHandleEvent)(int fd,
drmEventContext *evctx) = NULL;
//// dri
static Bool (*sym_DRI2QueryExtension)(Display *display,
int *eventBase,
int *errorBase) = NULL;
static Bool (*sym_DRI2QueryVersion)(Display *display,
int *major,
int *minor) = NULL;
static Bool (*sym_DRI2Connect)(Display *display,
XID window,
char **driverName,
char **deviceName) = NULL;
static Bool (*sym_DRI2Authenticate)(Display *display,
XID window,
drm_magic_t magic) = NULL;
//// dri/drm data needed
static int dri2_event = 0;
static int dri2_error = 0;
static int dri2_major = 0;
static int dri2_minor = 0;
static char *device_name = 0;
static char *driver_name = 0;
static drm_magic_t drm_magic;
static int drm_fd = -1;
static int drm_event_is_busy = 0;
static int drm_animators_interval = 1;
static drmEventContext drm_evctx;
static Ecore_Fd_Handler *dri_drm_fdh = NULL;
static void *dri_lib = NULL;
static void *drm_lib = NULL;
static Eina_Bool
_dri_drm_tick_schedule(void)
{
drmVBlank vbl;
vbl.request.type = DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT;
vbl.request.sequence = drm_animators_interval;
vbl.request.signal = 0;
if (sym_drmWaitVBlank(drm_fd, &vbl) < 0) return EINA_FALSE;
return EINA_TRUE;
}
static void
_dri_drm_tick_begin(void *data EINA_UNUSED)
{
drm_event_is_busy = 1;
_dri_drm_tick_schedule();
}
static void
_dri_drm_tick_end(void *data EINA_UNUSED)
{
drm_event_is_busy = 0;
}
static void
_dri_drm_vblank_handler(int fd EINA_UNUSED,
unsigned int frame EINA_UNUSED,
unsigned int sec EINA_UNUSED,
unsigned int usec EINA_UNUSED,
void *data EINA_UNUSED)
{
if (drm_event_is_busy)
{
// XXX: set looptime
ecore_animator_custom_tick();
_dri_drm_tick_schedule();
}
}
static Eina_Bool
_dri_drm_cb(void *data EINA_UNUSED,
Ecore_Fd_Handler *fd_handler EINA_UNUSED)
{
sym_drmHandleEvent(drm_fd, &drm_evctx);
return ECORE_CALLBACK_RENEW;
}
// yes. most evil. we dlopen libdrm and libGL etc. to manually find smbols
// so we can be as compatible as possible given the whole mess of the
// gl/dri/drm etc. world. and handle graceful failure at runtime not
// compile time
static int
_dri_drm_link(void)
{
const char *drm_libs[] =
{
"libdrm.so.2",
"libdrm.so.1",
"libdrm.so.0",
"libdrm.so",
NULL,
};
const char *dri_libs[] =
{
"libdri2.so.2",
"libdri2.so.1",
"libdri2.so.0",
"libdri2.so",
"libGL.so.4",
"libGL.so.3",
"libGL.so.2",
"libGL.so.1",
"libGL.so.0",
"libGL.so",
NULL,
};
int i, fail;
#define SYM(lib, xx) \
do { \
sym_ ## xx = dlsym(lib, #xx); \
if (!(sym_ ## xx)) { \
fail = 1; \
} \
} while (0)
if (dri_lib) return 1;
for (i = 0; drm_libs[i]; i++)
{
drm_lib = dlopen(drm_libs[i], RTLD_LOCAL | RTLD_LAZY);
if (drm_lib)
{
fail = 0;
SYM(drm_lib, drmClose);
SYM(drm_lib, drmWaitVBlank);
SYM(drm_lib, drmHandleEvent);
if (fail)
{
dlclose(drm_lib);
drm_lib = NULL;
}
else break;
}
}
if (!drm_lib) return 0;
for (i = 0; dri_libs[i]; i++)
{
dri_lib = dlopen(dri_libs[i], RTLD_LOCAL | RTLD_LAZY);
if (dri_lib)
{
fail = 0;
SYM(dri_lib, DRI2QueryExtension);
SYM(dri_lib, DRI2QueryVersion);
SYM(dri_lib, DRI2Connect);
SYM(dri_lib, DRI2Authenticate);
if (fail)
{
dlclose(dri_lib);
dri_lib = NULL;
}
else break;
}
}
if (!dri_lib)
{
dlclose(drm_lib);
drm_lib = NULL;
return 0;
}
return 1;
}
static int
_dri_drm_init(void)
{
if (!sym_DRI2QueryExtension(_ecore_x_disp, &dri2_event, &dri2_error))
return 0;
if (!sym_DRI2QueryVersion(_ecore_x_disp, &dri2_major, &dri2_minor))
return 0;
if (dri2_major < 2)
return 0;
if (!sym_DRI2Connect(_ecore_x_disp, vsync_root, &driver_name, &device_name))
return 0;
drm_fd = open(device_name, O_RDWR);
if (drm_fd < 0)
return 0;
sym_drmGetMagic(drm_fd, &drm_magic);
if (!sym_DRI2Authenticate(_ecore_x_disp, vsync_root, drm_magic))
{
close(drm_fd);
drm_fd = -1;
return 0;
}
memset(&drm_evctx, 0, sizeof(drm_evctx));
drm_evctx.version = DRM_EVENT_CONTEXT_VERSION;
drm_evctx.vblank_handler = _dri_drm_vblank_handler;
drm_evctx.page_flip_handler = NULL;
if (!_dri_drm_tick_schedule())
{
close(drm_fd);
drm_fd = -1;
return 0;
}
dri_drm_fdh = ecore_main_fd_handler_add(drm_fd, ECORE_FD_READ,
_dri_drm_cb, NULL, NULL, NULL);
if (!dri_drm_fdh)
{
close(drm_fd);
drm_fd = -1;
return 0;
}
return 1;
}
static void
_dri_drm_shutdown(void)
{
if (drm_fd >= 0)
{
close(drm_fd);
drm_fd = -1;
}
if (dri_drm_fdh)
{
ecore_main_fd_handler_del(dri_drm_fdh);
dri_drm_fdh = NULL;
}
}
static Eina_Bool
_dri_animator_tick_source_set(void)
{
if (vsync_root)
{
if (!_dri_drm_link())
{
ecore_animator_source_set(ECORE_ANIMATOR_SOURCE_TIMER);
return EINA_FALSE;
}
_dri_drm_shutdown();
if (!_dri_drm_init())
{
vsync_root = 0;
ecore_animator_source_set(ECORE_ANIMATOR_SOURCE_TIMER);
return EINA_FALSE;
}
ecore_animator_custom_source_tick_begin_callback_set
(_dri_drm_tick_begin, NULL);
ecore_animator_custom_source_tick_end_callback_set
(_dri_drm_tick_end, NULL);
ecore_animator_source_set(ECORE_ANIMATOR_SOURCE_CUSTOM);
}
else
{
if (drm_fd >= 0)
{
_dri_drm_shutdown();
ecore_animator_custom_source_tick_begin_callback_set
(NULL, NULL);
ecore_animator_custom_source_tick_end_callback_set
(NULL, NULL);
ecore_animator_source_set(ECORE_ANIMATOR_SOURCE_TIMER);
}
}
return EINA_TRUE;
}
#endif
static Ecore_Con_Server *vsync_server = NULL;
static Eina_Bool handlers = EINA_FALSE;
static Eina_Prefix *_prefix = NULL;
static Eina_Bool
vsync_server_add(void *data EINA_UNUSED, int type EINA_UNUSED, void *event)
{
Ecore_Con_Event_Server_Add *ev = event;
if (ev->server != vsync_server) return EINA_TRUE;
return EINA_FALSE;
}
static Eina_Bool
vsync_server_del(void *data EINA_UNUSED, int type EINA_UNUSED, void *event)
{
Ecore_Con_Event_Server_Del *ev = event;
if (ev->server != vsync_server) return EINA_TRUE;
if (vsync_server)
{
ecore_con_server_del(vsync_server);
vsync_server = NULL;
ecore_animator_custom_source_tick_begin_callback_set(NULL, NULL);
ecore_animator_custom_source_tick_end_callback_set(NULL, NULL);
ecore_animator_source_set(ECORE_ANIMATOR_SOURCE_TIMER);
}
return EINA_FALSE;
}
static Eina_Bool
vsync_server_data(void *data EINA_UNUSED, int type EINA_UNUSED, void *event)
{
Ecore_Con_Event_Server_Data *ev = event;
int i;
double t;
char *d;
if (ev->server != vsync_server) return EINA_TRUE;
d = ev->data;;
for (i = 0; i < ev->size - (int)(sizeof(double) - 1); i++)
{
memcpy(&t, &(d[i]), sizeof(double));
ecore_loop_time_set(t);
ecore_animator_custom_tick();
}
return EINA_FALSE;
}
static void
vsync_tick_begin(void *data EINA_UNUSED)
{
char val = 1;
ecore_con_server_send(vsync_server, &val, 1);
}
static void
vsync_tick_end(void *data EINA_UNUSED)
{
char val = 0;
ecore_con_server_send(vsync_server, &val, 1);
}
static Eina_Bool
_glvsync_animator_tick_source_set(void)
{
if (!vsync_server)
{
char buf[4096], *disp, *s;
int tries = 0;
if (!handlers)
{
_prefix = eina_prefix_new(NULL, ecore_x_vsync_animator_tick_source_set,
"ECORE_X", "ecore_x", "checkme",
PACKAGE_BIN_DIR, PACKAGE_LIB_DIR,
PACKAGE_DATA_DIR, PACKAGE_DATA_DIR);
ecore_con_init();
}
disp = getenv("DISPLAY");
if (disp) disp = ":0";
snprintf(buf, sizeof(buf), "ecore-x-vsync-%s", disp);
for (s = buf; *s; s++)
{
if (*s == ':') *s = '=';
}
vsync_server = ecore_con_server_connect(ECORE_CON_LOCAL_USER, buf, 1, NULL);
while (!vsync_server)
{
tries++;
if (tries > 50) return EINA_FALSE;
snprintf(buf, sizeof(buf), "%s/ecore_x/bin/%s/ecore_x_vsync",
eina_prefix_lib_get(_prefix), MODULE_ARCH);
ecore_exe_run(buf, NULL);
usleep(10000);
vsync_server = ecore_con_server_connect(ECORE_CON_LOCAL_USER, buf, 0, NULL);
}
if (!handlers)
{
ecore_event_handler_add(ECORE_CON_EVENT_SERVER_ADD, vsync_server_add, NULL);
ecore_event_handler_add(ECORE_CON_EVENT_SERVER_DEL, vsync_server_del, NULL);
ecore_event_handler_add(ECORE_CON_EVENT_SERVER_DATA, vsync_server_data, NULL);
handlers = EINA_FALSE;
}
}
if (vsync_root)
{
ecore_animator_custom_source_tick_begin_callback_set(vsync_tick_begin, NULL);
ecore_animator_custom_source_tick_end_callback_set(vsync_tick_end, NULL);
ecore_animator_source_set(ECORE_ANIMATOR_SOURCE_CUSTOM);
}
else
{
if (vsync_server)
{
ecore_con_server_del(vsync_server);
vsync_server = NULL;
}
ecore_animator_custom_source_tick_begin_callback_set(NULL, NULL);
ecore_animator_custom_source_tick_end_callback_set(NULL, NULL);
ecore_animator_source_set(ECORE_ANIMATOR_SOURCE_TIMER);
}
return EINA_TRUE;
}
// XXX: missing mode 3 == separate x connection with compiled in dri2 proto
// handling ala mesa (taken from mesa likely)
static int mode = 0;
static void
_vsync_init(void)
{
static int done = 0;
if (done) return;
#ifdef ECORE_X_VSYNC_DRI2
// preferred inline dri/drm if possible
if (_dri_drm_link())
{
_dri_drm_shutdown();
if (_dri_drm_init())
{
mode = 1;
}
}
#endif
// nvidia gl vsync slave mode
if (mode == 0)
{
struct stat stb;
if (!stat("/dev/nvidiactl", &stb))
{
mode = 2;
}
}
done = 1;
}
EAPI Eina_Bool
ecore_x_vsync_animator_tick_source_set(Ecore_X_Window win)
{
Ecore_X_Window root;
root = ecore_x_window_root_get(win);
if (root != vsync_root)
{
_vsync_init();
vsync_root = root;
#ifdef ECORE_X_VSYNC_DRI2
if (mode == 1) return _dri_animator_tick_source_set();
else
#endif
if (mode == 2) return _glvsync_animator_tick_source_set();
else return EINA_FALSE;
}
return EINA_TRUE;
}
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