src/video_output/opengl.c

   1 /*****************************************************************************
   2  * opengl.c: VLC GL API
   3  *****************************************************************************
   4  * Copyright (C) 2011 Rémi Denis-Courmont
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  19  *****************************************************************************/
  20
  21 #ifdef HAVE_CONFIG_H
  22 # include <config.h>
  23 #endif
  24
  25 #include <vlc_common.h>
  26 #include <vlc_opengl.h>
  27 #include "libvlc.h"
  28 #include <vlc_modules.h>
  29
  30 #undef vlc_gl_Create
  31 /**
  32  * Creates an OpenGL context (and its underlying surface).
  33  *
  34  * @note In most cases, you should vlc_gl_MakeCurrent() afterward.
  35  *
  36  * @param wnd window to use as OpenGL surface
  37  * @param flags OpenGL context type
  38  * @param name module name (or NULL for auto)
  39  * @return a new context, or NULL on failure
  40  */
  41 vlc_gl_t *vlc_gl_Create(struct vout_window_t *wnd, unsigned flags,
  42                         const char *name)
  43 {
  44     vlc_object_t *parent = (vlc_object_t *)wnd;
  45     vlc_gl_t *gl;
  46     const char *type;
  47
  48     switch (flags /*& VLC_OPENGL_API_MASK*/)
  49     {
  50         case VLC_OPENGL:
  51             type = "opengl";
  52             break;
  53         case VLC_OPENGL_ES:
  54             type = "opengl es";
  55             break;
  56         case VLC_OPENGL_ES2:
  57             type = "opengl es2";
  58             break;
  59         default:
  60             return NULL;
  61     }
  62
  63     gl = vlc_custom_create(parent, sizeof (*gl), "gl");
  64     if (unlikely(gl == NULL))
  65         return NULL;
  66
  67     gl->surface = wnd;
  68     gl->module = module_need(gl, type, name, true);
  69     if (gl->module == NULL)
  70     {
  71         vlc_object_release(gl);
  72         return NULL;
  73     }
  74
  75     return gl;
  76 }
  77
  78 void vlc_gl_Destroy(vlc_gl_t *gl)
  79 {
  80     module_unneed(gl, gl->module);
  81     vlc_object_release(gl);
  82 }