modules/video_output/opengl.h

   1 /*****************************************************************************
   2  * opengl.h: OpenGL vout_display helpers
   3  *****************************************************************************
   4  * Copyright (C) 2004-2013 VLC authors and VideoLAN
   5  * Copyright (C) 2009 Laurent Aimar
   6  *
   7  * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
   8  *          Rémi Denis-Courmont
   9  *          Jean-Baptiste Kempf <jb@videolan.org>
  10  *          Ilkka Ollakka <ileoo@videolan.org>
  11  *          Felix Paul Kühne <fkuehne at videolan dot org>
  12  *          Rafaël Carré <funman@videolanorg>
  13  *
  14  * This program is free software; you can redistribute it and/or modify it
  15  * under the terms of the GNU Lesser General Public License as published by
  16  * the Free Software Foundation; either version 2.1 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  22  * GNU Lesser General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Lesser General Public License
  25  * along with this program; if not, write to the Free Software Foundation,
  26  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  27  *****************************************************************************/
  28
  29 #ifndef VLC_OPENGL_H
  30 #define VLC_OPENGL_H
  31
  32 #include <vlc_common.h>
  33 #include <vlc_picture_pool.h>
  34 #include <vlc_opengl.h>
  35
  36 /* Change USE_OPENGL_ES value to set the OpenGL ES version (1, 2) you want to use
  37  * A value of 0 will activate normal OpenGL */
  38 #ifdef __APPLE__
  39 # include <TargetConditionals.h>
  40 # if !TARGET_OS_IPHONE
  41 #  define USE_OPENGL_ES 0
  42 #  define MACOS_OPENGL
  43 #  include <OpenGL/gl.h>
  44 # else /* Force ESv2 on iOS */
  45 #  define USE_OPENGL_ES 2
  46 #  include <OpenGLES/ES1/gl.h>
  47 #  include <OpenGLES/ES2/gl.h>
  48 #  include <OpenGLES/ES2/glext.h>
  49 # endif
  50 #else /* !defined (__APPLE__) */
  51 # ifndef USE_OPENGL_ES
  52 #  define USE_OPENGL_ES 0
  53 # endif
  54 # if USE_OPENGL_ES == 2
  55 #  include <GLES2/gl2.h>
  56 # elif USE_OPENGL_ES == 1
  57 #  include <GLES/gl.h>
  58 # else
  59 #  ifdef _WIN32
  60 #   include <GL/glew.h>
  61 #   undef glClientActiveTexture
  62 #   undef glActiveTexture
  63     PFNGLACTIVETEXTUREPROC glActiveTexture;
  64     PFNGLCLIENTACTIVETEXTUREPROC glClientActiveTexture;
  65 #  endif
  66 #  include <GL/gl.h>
  67 # endif
  68 #endif
  69
  70 static const vlc_fourcc_t gl_subpicture_chromas[] = {
  71     VLC_CODEC_RGBA,
  72     0
  73 };
  74
  75 static inline bool HasExtension(const char *apis, const char *api)
  76 {
  77     size_t apilen = strlen(api);
  78     while (apis) {
  79         while (*apis == ' ')
  80             apis++;
  81         if (!strncmp(apis, api, apilen) && memchr(" ", apis[apilen], 2))
  82             return true;
  83         apis = strchr(apis, ' ');
  84     }
  85     return false;
  86 }
  87
  88 void orientationTransformMatrix(GLfloat matrix[static 16], video_orientation_t orientation);
  89
  90 typedef struct vout_display_opengl_t vout_display_opengl_t;
  91
  92 vout_display_opengl_t *vout_display_opengl_New(video_format_t *fmt,
  93                                                const vlc_fourcc_t **subpicture_chromas,
  94                                                vlc_gl_t *gl,
  95                                                const vlc_viewpoint_t *viewpoint);
  96 void vout_display_opengl_Delete(vout_display_opengl_t *vgl);
  97
  98 picture_pool_t *vout_display_opengl_GetPool(vout_display_opengl_t *vgl, unsigned);
  99
 100 int vout_display_opengl_SetViewpoint(vout_display_opengl_t *vgl, const vlc_viewpoint_t*);
 101
 102 void vout_display_opengl_SetWindowAspectRatio(vout_display_opengl_t *vgl,
 103                                               float f_sar);
 104
 105 int vout_display_opengl_Prepare(vout_display_opengl_t *vgl,
 106                                 picture_t *picture, subpicture_t *subpicture);
 107 int vout_display_opengl_Display(vout_display_opengl_t *vgl,
 108                                 const video_format_t *source);
 109
 110 #endif