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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2009-2010 Chia-I Wu <olvaffe@gmail.com>
  4.  * Copyright 2010-2011 LunarG, Inc.
  5.  * All Rights Reserved.
  6.  *
  7.  * Permission is hereby granted, free of charge, to any person obtaining a
  8.  * copy of this software and associated documentation files (the
  9.  * "Software"), to deal in the Software without restriction, including
  10.  * without limitation the rights to use, copy, modify, merge, publish,
  11.  * distribute, sub license, and/or sell copies of the Software, and to
  12.  * permit persons to whom the Software is furnished to do so, subject to
  13.  * the following conditions:
  14.  *
  15.  * The above copyright notice and this permission notice (including the
  16.  * next paragraph) shall be included in all copies or substantial portions
  17.  * of the Software.
  18.  *
  19.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  24.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  25.  * DEALINGS IN THE SOFTWARE.
  26.  *
  27.  **************************************************************************/
  28.  
  29.  
  30. #ifndef EGLIMAGE_INCLUDED
  31. #define EGLIMAGE_INCLUDED
  32.  
  33. #include "c99_compat.h"
  34.  
  35. #include "egltypedefs.h"
  36. #include "egldisplay.h"
  37.  
  38.  
  39. #ifdef __cplusplus
  40. extern "C" {
  41. #endif
  42.  
  43. struct _egl_image_attrib_int
  44. {
  45.    EGLint Value;
  46.    EGLBoolean IsPresent;
  47. };
  48.  
  49. struct _egl_image_attribs
  50. {
  51.    /* EGL_KHR_image_base */
  52.    EGLBoolean ImagePreserved;
  53.  
  54.    /* EGL_KHR_gl_image */
  55.    EGLint GLTextureLevel;
  56.    EGLint GLTextureZOffset;
  57.  
  58.    /* EGL_MESA_drm_image */
  59.    EGLint Width;
  60.    EGLint Height;
  61.    EGLint DRMBufferFormatMESA;
  62.    EGLint DRMBufferUseMESA;
  63.    EGLint DRMBufferStrideMESA;
  64.  
  65.    /* EGL_WL_bind_wayland_display */
  66.    EGLint PlaneWL;
  67.  
  68.    /* EGL_EXT_image_dma_buf_import */
  69.    struct _egl_image_attrib_int DMABufFourCC;
  70.    struct _egl_image_attrib_int DMABufPlaneFds[3];
  71.    struct _egl_image_attrib_int DMABufPlaneOffsets[3];
  72.    struct _egl_image_attrib_int DMABufPlanePitches[3];
  73.    struct _egl_image_attrib_int DMABufYuvColorSpaceHint;
  74.    struct _egl_image_attrib_int DMABufSampleRangeHint;
  75.    struct _egl_image_attrib_int DMABufChromaHorizontalSiting;
  76.    struct _egl_image_attrib_int DMABufChromaVerticalSiting;
  77. };
  78.  
  79. /**
  80.  * "Base" class for device driver images.
  81.  */
  82. struct _egl_image
  83. {
  84.    /* An image is a display resource */
  85.    _EGLResource Resource;
  86. };
  87.  
  88.  
  89. extern EGLint
  90. _eglParseImageAttribList(_EGLImageAttribs *attrs, _EGLDisplay *dpy,
  91.                          const EGLint *attrib_list);
  92.  
  93.  
  94. extern EGLBoolean
  95. _eglInitImage(_EGLImage *img, _EGLDisplay *dpy);
  96.  
  97.  
  98. /**
  99.  * Increment reference count for the image.
  100.  */
  101. static inline _EGLImage *
  102. _eglGetImage(_EGLImage *img)
  103. {
  104.    if (img)
  105.       _eglGetResource(&img->Resource);
  106.    return img;
  107. }
  108.  
  109.  
  110. /**
  111.  * Decrement reference count for the image.
  112.  */
  113. static inline EGLBoolean
  114. _eglPutImage(_EGLImage *img)
  115. {
  116.    return (img) ? _eglPutResource(&img->Resource) : EGL_FALSE;
  117. }
  118.  
  119.  
  120. /**
  121.  * Link an image to its display and return the handle of the link.
  122.  * The handle can be passed to client directly.
  123.  */
  124. static inline EGLImageKHR
  125. _eglLinkImage(_EGLImage *img)
  126. {
  127.    _eglLinkResource(&img->Resource, _EGL_RESOURCE_IMAGE);
  128.    return (EGLImageKHR) img;
  129. }
  130.  
  131.  
  132. /**
  133.  * Unlink a linked image from its display.
  134.  * Accessing an unlinked image should generate EGL_BAD_PARAMETER error.
  135.  */
  136. static inline void
  137. _eglUnlinkImage(_EGLImage *img)
  138. {
  139.    _eglUnlinkResource(&img->Resource, _EGL_RESOURCE_IMAGE);
  140. }
  141.  
  142.  
  143. /**
  144.  * Lookup a handle to find the linked image.
  145.  * Return NULL if the handle has no corresponding linked image.
  146.  */
  147. static inline _EGLImage *
  148. _eglLookupImage(EGLImageKHR image, _EGLDisplay *dpy)
  149. {
  150.    _EGLImage *img = (_EGLImage *) image;
  151.    if (!dpy || !_eglCheckResource((void *) img, _EGL_RESOURCE_IMAGE, dpy))
  152.       img = NULL;
  153.    return img;
  154. }
  155.  
  156.  
  157. /**
  158.  * Return the handle of a linked image, or EGL_NO_IMAGE_KHR.
  159.  */
  160. static inline EGLImageKHR
  161. _eglGetImageHandle(_EGLImage *img)
  162. {
  163.    _EGLResource *res = (_EGLResource *) img;
  164.    return (res && _eglIsResourceLinked(res)) ?
  165.       (EGLImageKHR) img : EGL_NO_IMAGE_KHR;
  166. }
  167.  
  168.  
  169. #ifdef __cplusplus
  170. }
  171. #endif
  172.  
  173. #endif /* EGLIMAGE_INCLUDED */
  174.