360 lines
9.1 KiB
C
360 lines
9.1 KiB
C
#include "ecore_xcb_private.h"
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#ifdef ECORE_XCB_DRI
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# include <fcntl.h>
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# include <dlfcn.h>
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# include <xcb/dri2.h>
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#endif
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#define ECORE_XCB_VSYNC_DRI2 1
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#define DRM_EVENT_CONTEXT_VERSION 2
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#ifdef ECORE_XCB_DRI
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/* relevant header bits of dri/drm inlined here to avoid needing external */
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/* headers to build drm */
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typedef unsigned int drm_magic_t;
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typedef enum
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{
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DRM_VBLANK_ABSOLUTE = 0x00000000,
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DRM_VBLANK_RELATIVE = 0x00000001,
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DRM_VBLANK_EVENT = 0x04000000,
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DRM_VBLANK_FLIP = 0x08000000,
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DRM_VBLANK_NEXTONMISS = 0x10000000,
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DRM_VBLANK_SECONDARY = 0x20000000,
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DRM_VBLANK_SIGNAL = 0x40000000
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} drmVBlankSeqType;
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typedef struct _drmVBlankReq
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{
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drmVBlankSeqType type;
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unsigned int sequence;
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unsigned long signal;
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} drmVBlankReq;
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typedef struct _drmVBlankReply
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{
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drmVBlankSeqType type;
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unsigned int sequence;
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long tval_sec, tval_usec;
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} drmVBlankReply;
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typedef union _drmVBlank
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{
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drmVBlankReq request;
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drmVBlankReply reply;
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} drmVBlank;
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typedef struct _drmEventContext
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{
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int version;
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void (*vblank_handler)(int fd, unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec, void *user_data);
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void (*page_flip_handler)(int fd, unsigned int sequence, unsigned int tv_sec, unsigned int tv_usec, void *user_data);
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} drmEventContext;
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static int (*sym_drmClose) (int fd) = NULL;
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static int (*sym_drmGetMagic) (int fd, drm_magic_t * magic) = NULL;
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static int (*sym_drmWaitVBlank) (int fd, drmVBlank *vbl) = NULL;
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static int (*sym_drmHandleEvent) (int fd, drmEventContext *evctx) = NULL;
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#endif
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/* local function prototypes */
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static Eina_Bool _ecore_xcb_dri_link(void);
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static Eina_Bool _ecore_xcb_dri_start(void);
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static void _ecore_xcb_dri_shutdown(void);
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static Eina_Bool _ecore_xcb_dri_cb(void *data __UNUSED__, Ecore_Fd_Handler *fdh __UNUSED__);
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static void _ecore_xcb_dri_tick_begin(void *data __UNUSED__);
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static void _ecore_xcb_dri_tick_end(void *data __UNUSED__);
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static void _ecore_xcb_dri_tick_schedule(void);
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static void _ecore_xcb_dri_vblank_handler(int fd __UNUSED__, unsigned int frame __UNUSED__, unsigned int sec __UNUSED__, unsigned int usec __UNUSED__, void *data __UNUSED__);
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/* local variables */
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static Eina_Bool _dri2_avail = EINA_FALSE;
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static Ecore_X_Window _vsync_root = 0;
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static int _drm_fd = -1;
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static Ecore_Fd_Handler *_drm_fdh = NULL;
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static unsigned int _drm_magic = 0;
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static Eina_Bool _drm_event_busy = EINA_FALSE;
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static void *_drm_lib = NULL;
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#ifdef ECORE_XCB_DRI
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static drmEventContext _drm_evctx;
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#endif
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void
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_ecore_xcb_dri_init(void)
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{
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LOGFN(__FILE__, __LINE__, __FUNCTION__);
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#ifdef ECORE_XCB_DRI
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xcb_prefetch_extension_data(_ecore_xcb_conn, &xcb_dri2_id);
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#endif
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}
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void
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_ecore_xcb_dri_finalize(void)
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{
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#ifdef ECORE_XCB_DRI
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const xcb_query_extension_reply_t *ext_reply;
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#endif
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LOGFN(__FILE__, __LINE__, __FUNCTION__);
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#ifdef ECORE_XCB_DRI
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ext_reply = xcb_get_extension_data(_ecore_xcb_conn, &xcb_dri2_id);
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if ((ext_reply) && (ext_reply->present))
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{
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xcb_dri2_query_version_cookie_t dcookie;
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xcb_dri2_query_version_reply_t *dreply;
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dcookie =
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xcb_dri2_query_version_unchecked(_ecore_xcb_conn,
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XCB_DRI2_MAJOR_VERSION,
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XCB_DRI2_MINOR_VERSION);
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dreply = xcb_dri2_query_version_reply(_ecore_xcb_conn, dcookie, NULL);
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if (dreply)
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{
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if (dreply->major_version >= 2) _dri2_avail = EINA_TRUE;
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free(dreply);
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}
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}
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#endif
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}
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EAPI Eina_Bool
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ecore_x_vsync_animator_tick_source_set(Ecore_X_Window win)
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{
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#ifdef ECORE_XCB_DRI
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Ecore_X_Window root;
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#endif
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LOGFN(__FILE__, __LINE__, __FUNCTION__);
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if (!_dri2_avail) return EINA_FALSE;
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#ifdef ECORE_XCB_DRI
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root = ecore_x_window_root_get(win);
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if (root != _vsync_root)
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{
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_vsync_root = root;
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if (_vsync_root)
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{
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if (!_ecore_xcb_dri_link())
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{
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ecore_animator_source_set(ECORE_ANIMATOR_SOURCE_TIMER);
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return EINA_FALSE;
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}
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_ecore_xcb_dri_shutdown();
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if (!_ecore_xcb_dri_start())
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{
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_vsync_root = 0;
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ecore_animator_source_set(ECORE_ANIMATOR_SOURCE_TIMER);
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return EINA_FALSE;
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}
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ecore_animator_custom_source_tick_begin_callback_set
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(_ecore_xcb_dri_tick_begin, NULL);
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ecore_animator_custom_source_tick_end_callback_set
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(_ecore_xcb_dri_tick_end, NULL);
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ecore_animator_source_set(ECORE_ANIMATOR_SOURCE_CUSTOM);
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}
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else
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{
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if (_drm_fd >= 0)
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{
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_ecore_xcb_dri_shutdown();
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ecore_animator_custom_source_tick_begin_callback_set
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(NULL, NULL);
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ecore_animator_custom_source_tick_end_callback_set
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(NULL, NULL);
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ecore_animator_source_set(ECORE_ANIMATOR_SOURCE_TIMER);
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}
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}
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}
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return EINA_TRUE;
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#else
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return EINA_FALSE;
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win = 0;
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#endif
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}
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/* local functions */
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static Eina_Bool
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_ecore_xcb_dri_link(void)
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{
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#ifdef ECORE_XCB_DRI
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const char *_drm_libs[] =
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{
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"libdrm.so.2",
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"libdrm.so.1",
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"libdrm.so.0",
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"libdrm.so",
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NULL,
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};
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int i = 0, fail = 0;
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#endif
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LOGFN(__FILE__, __LINE__, __FUNCTION__);
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#ifdef ECORE_XCB_DRI
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# define SYM(lib, xx) \
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do { \
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sym_## xx = dlsym(lib, #xx); \
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if (!(sym_## xx)) { \
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fprintf(stderr, "%s\n", dlerror()); \
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fail = 1; \
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} \
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} while (0);
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if (_drm_lib) return EINA_TRUE;
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for (i = 0; _drm_libs[i]; i++)
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{
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_drm_lib = dlopen(_drm_libs[i], (RTLD_LOCAL | RTLD_LAZY));
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if (_drm_lib)
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{
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fail = 0;
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SYM(_drm_lib, drmClose);
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SYM(_drm_lib, drmGetMagic);
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SYM(_drm_lib, drmWaitVBlank);
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SYM(_drm_lib, drmHandleEvent);
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if (fail)
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{
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dlclose(_drm_lib);
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_drm_lib = NULL;
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}
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else
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break;
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}
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}
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if (!_drm_lib) return EINA_FALSE;
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return EINA_TRUE;
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#endif
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return EINA_FALSE;
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}
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static Eina_Bool
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_ecore_xcb_dri_start(void)
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{
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#ifdef ECORE_XCB_DRI
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xcb_dri2_connect_cookie_t cookie;
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xcb_dri2_connect_reply_t *reply;
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xcb_dri2_authenticate_cookie_t acookie;
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xcb_dri2_authenticate_reply_t *areply;
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char *device = NULL, *driver = NULL;
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#endif
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LOGFN(__FILE__, __LINE__, __FUNCTION__);
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if (!_dri2_avail) return EINA_FALSE;
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#ifdef ECORE_XCB_DRI
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cookie = xcb_dri2_connect_unchecked(_ecore_xcb_conn,
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_vsync_root, XCB_DRI2_DRIVER_TYPE_DRI);
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reply = xcb_dri2_connect_reply(_ecore_xcb_conn, cookie, NULL);
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if (!reply) return EINA_FALSE;
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driver = xcb_dri2_connect_driver_name(reply);
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device = xcb_dri2_connect_device_name(reply);
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free(reply);
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if (!(_drm_fd = open(device, O_RDWR)))
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{
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_drm_fd = -1;
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return EINA_FALSE;
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}
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sym_drmGetMagic(_drm_fd, &_drm_magic);
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acookie =
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xcb_dri2_authenticate_unchecked(_ecore_xcb_conn, _vsync_root, _drm_magic);
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areply = xcb_dri2_authenticate_reply(_ecore_xcb_conn, acookie, NULL);
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if (!areply)
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{
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close(_drm_fd);
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_drm_fd = -1;
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return EINA_FALSE;
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}
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free(areply);
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memset(&_drm_evctx, 0, sizeof(_drm_evctx));
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_drm_evctx.version = DRM_EVENT_CONTEXT_VERSION;
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_drm_evctx.vblank_handler = _ecore_xcb_dri_vblank_handler;
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_drm_evctx.page_flip_handler = NULL;
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_drm_fdh = ecore_main_fd_handler_add(_drm_fd, ECORE_FD_READ,
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_ecore_xcb_dri_cb, NULL, NULL, NULL);
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if (!_drm_fdh)
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{
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close(_drm_fd);
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_drm_fd = -1;
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return EINA_FALSE;
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}
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return EINA_TRUE;
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#endif
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return EINA_FALSE;
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}
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static void
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_ecore_xcb_dri_shutdown(void)
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{
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if (_drm_fd >= 0)
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{
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close(_drm_fd);
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_drm_fd = -1;
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}
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if (_drm_fdh)
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{
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ecore_main_fd_handler_del(_drm_fdh);
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_drm_fdh = NULL;
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}
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}
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static Eina_Bool
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_ecore_xcb_dri_cb(void *data __UNUSED__, Ecore_Fd_Handler *fdh __UNUSED__)
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{
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#ifdef ECORE_XCB_DRI
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sym_drmHandleEvent(_drm_fd, &_drm_evctx);
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#endif
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return ECORE_CALLBACK_RENEW;
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}
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static void
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_ecore_xcb_dri_tick_begin(void *data __UNUSED__)
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{
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_drm_event_busy = EINA_TRUE;
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_ecore_xcb_dri_tick_schedule();
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}
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static void
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_ecore_xcb_dri_tick_end(void *data __UNUSED__)
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{
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_drm_event_busy = EINA_FALSE;
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}
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static void
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_ecore_xcb_dri_tick_schedule(void)
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{
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#ifdef ECORE_XCB_DRI
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drmVBlank vbl;
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#endif
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LOGFN(__FILE__, __LINE__, __FUNCTION__);
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#ifdef ECORE_XCB_DRI
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vbl.request.type = (DRM_VBLANK_RELATIVE | DRM_VBLANK_EVENT);
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vbl.request.sequence = 1;
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vbl.request.signal = 0;
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sym_drmWaitVBlank(_drm_fd, &vbl);
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#endif
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}
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static void
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_ecore_xcb_dri_vblank_handler(int fd __UNUSED__, unsigned int frame __UNUSED__, unsigned int sec __UNUSED__, unsigned int usec __UNUSED__, void *data __UNUSED__)
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{
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ecore_animator_custom_tick();
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if (_drm_event_busy) _ecore_xcb_dri_tick_schedule();
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}
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