2008-05-27 23:48:23 +01:00
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/**
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* Functions related to EGLDisplay.
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*/
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#include <assert.h>
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2005-04-22 22:09:39 +01:00
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#include <stdlib.h>
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#include <string.h>
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#include "eglcontext.h"
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2009-07-17 18:48:27 +01:00
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#include "eglsurface.h"
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2005-04-22 22:09:39 +01:00
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#include "egldisplay.h"
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2008-05-27 23:48:23 +01:00
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#include "egldriver.h"
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2005-04-22 22:09:39 +01:00
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#include "eglglobals.h"
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#include "eglhash.h"
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2008-05-28 19:56:36 +01:00
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#include "eglstring.h"
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2005-04-22 22:09:39 +01:00
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/**
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2008-05-27 23:48:23 +01:00
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* Allocate a new _EGLDisplay object for the given nativeDisplay handle.
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* We'll also try to determine the device driver name at this time.
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2008-05-28 19:56:36 +01:00
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*
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* Note that nativeDisplay may be an X Display ptr, or a string.
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2005-04-22 22:09:39 +01:00
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*/
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_EGLDisplay *
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2008-05-27 23:48:23 +01:00
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_eglNewDisplay(NativeDisplayType nativeDisplay)
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2005-04-22 22:09:39 +01:00
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{
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2005-12-23 08:17:44 +00:00
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_EGLDisplay *dpy = (_EGLDisplay *) calloc(1, sizeof(_EGLDisplay));
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2005-04-22 22:09:39 +01:00
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if (dpy) {
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2008-05-27 23:48:23 +01:00
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dpy->NativeDisplay = nativeDisplay;
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#if defined(_EGL_PLATFORM_X)
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dpy->Xdpy = (Display *) nativeDisplay;
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#endif
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2008-05-28 21:51:40 +01:00
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dpy->DriverName = _eglChooseDriver(dpy);
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2008-05-27 23:48:23 +01:00
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if (!dpy->DriverName) {
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free(dpy);
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return NULL;
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}
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2005-04-22 22:09:39 +01:00
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}
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return dpy;
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}
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2008-05-27 21:33:54 +01:00
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/**
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2009-07-17 18:48:27 +01:00
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* Link a display to itself and return the handle of the link.
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* The handle can be passed to client directly.
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*/
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EGLDisplay
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_eglLinkDisplay(_EGLDisplay *dpy)
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{
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EGLuint key;
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key = _eglHashGenKey(_eglGlobal.Displays);
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assert(key);
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/* "link" the display to the hash table */
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_eglHashInsert(_eglGlobal.Displays, key, dpy);
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dpy->Handle = (EGLDisplay) key;
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return dpy->Handle;
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}
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/**
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* Unlink a linked display from itself.
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* Accessing an unlinked display should generate EGL_BAD_DISPLAY error.
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*/
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void
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_eglUnlinkDisplay(_EGLDisplay *dpy)
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{
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_eglHashRemove(_eglGlobal.Displays, (EGLuint) dpy->Handle);
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dpy->Handle = EGL_NO_DISPLAY;
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}
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/**
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* Return the handle of a linked display, or EGL_NO_DISPLAY.
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2008-05-27 21:33:54 +01:00
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*/
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EGLDisplay
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_eglGetDisplayHandle(_EGLDisplay *display)
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{
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if (display)
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return display->Handle;
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else
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return EGL_NO_DISPLAY;
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}
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2005-04-22 22:09:39 +01:00
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/**
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2009-07-17 18:48:27 +01:00
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* Lookup a handle to find the linked display.
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* Return NULL if the handle has no corresponding linked display.
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2005-04-22 22:09:39 +01:00
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*/
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_EGLDisplay *
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_eglLookupDisplay(EGLDisplay dpy)
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{
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2008-05-27 20:45:41 +01:00
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EGLuint key = (EGLuint) dpy;
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2008-06-20 21:28:59 +01:00
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return (_EGLDisplay *) _eglHashLookup(_eglGlobal.Displays, key);
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2005-04-22 22:09:39 +01:00
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}
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2009-07-17 05:21:56 +01:00
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/**
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* Find the display corresponding to the specified native display id in all
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* linked displays.
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*/
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_EGLDisplay *
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_eglFindDisplay(NativeDisplayType nativeDisplay)
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{
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EGLuint key = _eglHashFirstEntry(_eglGlobal.Displays);
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/* Walk the hash table. Should switch to list if it is a problem. */
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while (key) {
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_EGLDisplay *dpy = (_EGLDisplay *)
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_eglHashLookup(_eglGlobal.Displays, key);
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assert(dpy);
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if (dpy->NativeDisplay == nativeDisplay)
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return dpy;
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key = _eglHashNextEntry(_eglGlobal.Displays, key);
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}
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return NULL;
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}
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2008-06-04 18:34:10 +01:00
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/**
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* Free all the data hanging of an _EGLDisplay object, but not
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* the object itself.
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*/
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2005-04-22 22:09:39 +01:00
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void
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2005-05-13 19:31:35 +01:00
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_eglCleanupDisplay(_EGLDisplay *disp)
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2005-04-22 22:09:39 +01:00
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{
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2008-06-04 18:34:10 +01:00
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EGLint i;
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for (i = 0; i < disp->NumConfigs; i++) {
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free(disp->Configs[i]);
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}
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2005-04-22 22:09:39 +01:00
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free(disp->Configs);
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2008-06-04 18:34:10 +01:00
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disp->Configs = NULL;
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/* XXX incomplete */
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2008-05-27 23:48:23 +01:00
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free((void *) disp->DriverName);
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2008-06-04 18:34:10 +01:00
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disp->DriverName = NULL;
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/* driver deletes the _EGLDisplay object */
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2005-04-22 22:09:39 +01:00
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}
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2009-07-17 18:48:27 +01:00
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/**
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* Link a context to a display and return the handle of the link.
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* The handle can be passed to client directly.
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*/
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EGLContext
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_eglLinkContext(_EGLContext *ctx, _EGLDisplay *dpy)
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{
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ctx->Display = dpy;
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ctx->Next = dpy->ContextList;
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dpy->ContextList = ctx;
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return (EGLContext) ctx;
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}
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/**
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* Unlink a linked context from its display.
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* Accessing an unlinked context should generate EGL_BAD_CONTEXT error.
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*/
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void
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_eglUnlinkContext(_EGLContext *ctx)
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{
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_EGLContext *prev;
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prev = ctx->Display->ContextList;
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if (prev != ctx) {
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while (prev) {
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if (prev->Next == ctx)
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break;
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prev = prev->Next;
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}
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assert(prev);
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prev->Next = ctx->Next;
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}
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else {
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ctx->Display->ContextList = ctx->Next;
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}
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ctx->Next = NULL;
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ctx->Display = NULL;
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}
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/**
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* Return the handle of a linked context, or EGL_NO_CONTEXT.
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*/
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EGLContext
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_eglGetContextHandle(_EGLContext *ctx)
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{
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return (EGLContext) (ctx && ctx->Display) ? ctx : EGL_NO_CONTEXT;
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}
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/**
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* Lookup a handle to find the linked context.
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* Return NULL if the handle has no corresponding linked context.
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*/
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_EGLContext *
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_eglLookupContext(EGLContext ctx)
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{
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_EGLContext *context = (_EGLContext *) ctx;
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return (context && context->Display) ? context : NULL;
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}
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/**
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* Link a surface to a display and return the handle of the link.
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* The handle can be passed to client directly.
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*/
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EGLSurface
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_eglLinkSurface(_EGLSurface *surf, _EGLDisplay *dpy)
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{
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EGLuint key;
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surf->Display = dpy;
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surf->Next = dpy->SurfaceList;
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dpy->SurfaceList = surf;
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key = _eglHashGenKey(_eglGlobal.Surfaces);
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assert(key);
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_eglHashInsert(_eglGlobal.Surfaces, key, surf);
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surf->Handle = (EGLSurface) key;
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return surf->Handle;
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}
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/**
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* Unlink a linked surface from its display.
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* Accessing an unlinked surface should generate EGL_BAD_SURFACE error.
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*/
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void
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_eglUnlinkSurface(_EGLSurface *surf)
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{
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_EGLSurface *prev;
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_eglHashRemove(_eglGlobal.Surfaces, (EGLuint) surf->Handle);
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surf->Handle = EGL_NO_SURFACE;
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prev = surf->Display->SurfaceList;
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if (prev != surf) {
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while (prev) {
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if (prev->Next == surf)
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break;
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prev = prev->Next;
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}
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assert(prev);
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prev->Next = surf->Next;
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}
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else {
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prev = NULL;
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surf->Display->SurfaceList = surf->Next;
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}
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surf->Next = NULL;
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surf->Display = NULL;
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}
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/**
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* Return the handle of a linked surface, or EGL_NO_SURFACE.
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*/
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EGLSurface
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_eglGetSurfaceHandle(_EGLSurface *surface)
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{
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if (surface)
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return surface->Handle;
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else
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return EGL_NO_SURFACE;
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}
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/**
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* Lookup a handle to find the linked surface.
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* Return NULL if the handle has no corresponding linked surface.
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*/
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_EGLSurface *
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_eglLookupSurface(EGLSurface surf)
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{
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_EGLSurface *c = (_EGLSurface *) _eglHashLookup(_eglGlobal.Surfaces,
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(EGLuint) surf);
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return c;
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}
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