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-rw-r--r--src/egl/main/eglimage.h96
1 files changed, 96 insertions, 0 deletions
diff --git a/src/egl/main/eglimage.h b/src/egl/main/eglimage.h
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+++ b/src/egl/main/eglimage.h
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+#ifndef EGLIMAGE_INCLUDED
+#define EGLIMAGE_INCLUDED
+
+
+#include "egltypedefs.h"
+#include "egldisplay.h"
+
+
+/**
+ * "Base" class for device driver images.
+ */
+struct _egl_image
+{
+ /* An image is a display resource */
+ _EGLResource Resource;
+
+ EGLBoolean Preserved;
+ EGLint GLTextureLevel;
+ EGLint GLTextureZOffset;
+};
+
+
+PUBLIC EGLBoolean
+_eglInitImage(_EGLImage *img, _EGLDisplay *dpy, const EGLint *attrib_list);
+
+
+extern _EGLImage *
+_eglCreateImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLContext *ctx,
+ EGLenum target, EGLClientBuffer buffer, const EGLint *attr_list);
+
+
+extern EGLBoolean
+_eglDestroyImageKHR(_EGLDriver *drv, _EGLDisplay *dpy, _EGLImage *image);
+
+
+/**
+ * Link an image to a display and return the handle of the link.
+ * The handle can be passed to client directly.
+ */
+static INLINE EGLImageKHR
+_eglLinkImage(_EGLImage *img, _EGLDisplay *dpy)
+{
+ _eglLinkResource(&img->Resource, _EGL_RESOURCE_IMAGE, dpy);
+ return (EGLImageKHR) img;
+}
+
+
+/**
+ * Unlink a linked image from its display.
+ * Accessing an unlinked image should generate EGL_BAD_PARAMETER error.
+ */
+static INLINE void
+_eglUnlinkImage(_EGLImage *img)
+{
+ _eglUnlinkResource(&img->Resource, _EGL_RESOURCE_IMAGE);
+}
+
+
+/**
+ * Lookup a handle to find the linked image.
+ * Return NULL if the handle has no corresponding linked image.
+ */
+static INLINE _EGLImage *
+_eglLookupImage(EGLImageKHR image, _EGLDisplay *dpy)
+{
+ _EGLImage *img = (_EGLImage *) image;
+ if (!dpy || !_eglCheckResource((void *) img, _EGL_RESOURCE_IMAGE, dpy))
+ img = NULL;
+ return img;
+}
+
+
+/**
+ * Return the handle of a linked image, or EGL_NO_IMAGE_KHR.
+ */
+static INLINE EGLImageKHR
+_eglGetImageHandle(_EGLImage *img)
+{
+ _EGLResource *res = (_EGLResource *) img;
+ return (res && _eglIsResourceLinked(res)) ?
+ (EGLImageKHR) img : EGL_NO_IMAGE_KHR;
+}
+
+
+/**
+ * Return true if the image is linked to a display.
+ */
+static INLINE EGLBoolean
+_eglIsImageLinked(_EGLImage *img)
+{
+ _EGLResource *res = (_EGLResource *) img;
+ return (res && _eglIsResourceLinked(res));
+}
+
+
+#endif /* EGLIMAGE_INCLUDED */