San Mehat | a430b2b | 2014-09-23 08:30:51 -0700 | [diff] [blame] | 1 | /* |
| 2 | Copyright (C) 2002-2010 Karl J. Runge <runge@karlrunge.com> |
| 3 | All rights reserved. |
| 4 | |
| 5 | This file is part of x11vnc. |
| 6 | |
| 7 | x11vnc is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or (at |
| 10 | your option) any later version. |
| 11 | |
| 12 | x11vnc is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with x11vnc; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA |
| 20 | or see <http://www.gnu.org/licenses/>. |
| 21 | |
| 22 | In addition, as a special exception, Karl J. Runge |
| 23 | gives permission to link the code of its release of x11vnc with the |
| 24 | OpenSSL project's "OpenSSL" library (or with modified versions of it |
| 25 | that use the same license as the "OpenSSL" library), and distribute |
| 26 | the linked executables. You must obey the GNU General Public License |
| 27 | in all respects for all of the code used other than "OpenSSL". If you |
| 28 | modify this file, you may extend this exception to your version of the |
| 29 | file, but you are not obligated to do so. If you do not wish to do |
| 30 | so, delete this exception statement from your version. |
| 31 | */ |
| 32 | |
| 33 | /* -- macosx_opengl.c -- */ |
| 34 | |
| 35 | #if (defined(__MACH__) && defined(__APPLE__)) |
| 36 | |
| 37 | #include <CoreFoundation/CoreFoundation.h> |
| 38 | #include <ApplicationServices/ApplicationServices.h> |
| 39 | |
| 40 | #include <rfb/rfb.h> |
| 41 | #if LIBVNCSERVER_HAVE_MACOSX_OPENGL_H |
| 42 | #include <OpenGL/OpenGL.h> |
| 43 | #include <OpenGL/gl.h> |
| 44 | #endif |
| 45 | |
| 46 | extern int macosx_no_opengl, macosx_read_opengl; |
| 47 | extern CGDirectDisplayID displayID; |
| 48 | |
| 49 | static CGLContextObj glContextObj; |
| 50 | |
| 51 | int macosx_opengl_width = 0; |
| 52 | int macosx_opengl_height = 0; |
| 53 | int macosx_opengl_bpp = 0; |
| 54 | |
| 55 | int macosx_opengl_get_width(void) { |
| 56 | GLint viewport[4]; |
| 57 | |
| 58 | glGetIntegerv(GL_VIEWPORT, viewport); |
| 59 | return (int) viewport[2]; |
| 60 | } |
| 61 | |
| 62 | int macosx_opengl_get_height(void) { |
| 63 | GLint viewport[4]; |
| 64 | |
| 65 | glGetIntegerv(GL_VIEWPORT, viewport); |
| 66 | return (int) viewport[3]; |
| 67 | } |
| 68 | |
| 69 | int macosx_opengl_get_bpp(void) { |
| 70 | return 32; |
| 71 | } |
| 72 | |
| 73 | int macosx_opengl_get_bps(void) { |
| 74 | return 8; |
| 75 | } |
| 76 | |
| 77 | int macosx_opengl_get_spp(void) { |
| 78 | return 3; |
| 79 | } |
| 80 | |
| 81 | void macosx_opengl_init(void) { |
| 82 | CGLPixelFormatObj pixelFormatObj; |
| 83 | GLint numPixelFormats; |
| 84 | CGLPixelFormatAttribute attribs[] = { |
| 85 | kCGLPFAFullScreen, |
| 86 | kCGLPFADisplayMask, |
| 87 | 0, |
| 88 | 0 |
| 89 | }; |
| 90 | |
| 91 | if (macosx_no_opengl) { |
| 92 | return; |
| 93 | } |
| 94 | |
| 95 | attribs[2] = CGDisplayIDToOpenGLDisplayMask(displayID); |
| 96 | |
| 97 | CGLChoosePixelFormat(attribs, &pixelFormatObj, &numPixelFormats); |
| 98 | if (pixelFormatObj == NULL) { |
| 99 | rfbLog("macosx_opengl_init: CGLChoosePixelFormat failed. Not using OpenGL.\n"); |
| 100 | return; |
| 101 | } |
| 102 | |
| 103 | CGLCreateContext(pixelFormatObj, NULL, &glContextObj); |
| 104 | CGLDestroyPixelFormat(pixelFormatObj); |
| 105 | |
| 106 | if (glContextObj == NULL) { |
| 107 | rfbLog("macosx_opengl_init: CGLCreateContext failed. Not using OpenGL.\n"); |
| 108 | return; |
| 109 | } |
| 110 | |
| 111 | CGLSetCurrentContext(glContextObj); |
| 112 | CGLSetFullScreen(glContextObj); |
| 113 | |
| 114 | macosx_opengl_width = macosx_opengl_get_width(); |
| 115 | macosx_opengl_height = macosx_opengl_get_height(); |
| 116 | |
| 117 | macosx_opengl_bpp = macosx_opengl_get_bpp(); |
| 118 | |
| 119 | glFinish(); |
| 120 | |
| 121 | glPixelStorei(GL_PACK_ALIGNMENT, 4); |
| 122 | glPixelStorei(GL_PACK_ROW_LENGTH, 0); |
| 123 | glPixelStorei(GL_PACK_SKIP_ROWS, 0); |
| 124 | glPixelStorei(GL_PACK_SKIP_PIXELS, 0); |
| 125 | |
| 126 | rfbLog("macosx_opengl_init: Using OpenGL for screen capture.\n"); |
| 127 | macosx_read_opengl = 1; |
| 128 | } |
| 129 | |
| 130 | void macosx_opengl_fini(void) { |
| 131 | if (!macosx_read_opengl) { |
| 132 | return; |
| 133 | } |
| 134 | CGLSetCurrentContext(NULL); |
| 135 | CGLClearDrawable(glContextObj); |
| 136 | CGLDestroyContext(glContextObj); |
| 137 | } |
| 138 | |
| 139 | void macosx_copy_opengl(char *dest, int x, int y, unsigned int w, unsigned int h) { |
| 140 | int yflip = macosx_opengl_height - y - h; |
| 141 | |
| 142 | CGLSetCurrentContext(glContextObj); |
| 143 | |
| 144 | glReadPixels((GLint) x, (GLint) yflip, (int) w, (int) h, |
| 145 | GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, dest); |
| 146 | |
| 147 | if (h > 1) { |
| 148 | static char *pbuf = NULL; |
| 149 | static int buflen = 0; |
| 150 | int top = 0, bot = h - 1, rowlen = w * macosx_opengl_bpp/8; |
| 151 | char *ptop, *pbot; |
| 152 | |
| 153 | if (rowlen > buflen || buflen == 0) { |
| 154 | buflen = rowlen + 128; |
| 155 | if (pbuf) { |
| 156 | free(pbuf); |
| 157 | } |
| 158 | pbuf = (char *) malloc(buflen); |
| 159 | } |
| 160 | while (top < bot) { |
| 161 | ptop = dest + top * rowlen; |
| 162 | pbot = dest + bot * rowlen; |
| 163 | memcpy(pbuf, ptop, rowlen); |
| 164 | memcpy(ptop, pbot, rowlen); |
| 165 | memcpy(pbot, pbuf, rowlen); |
| 166 | top++; |
| 167 | bot--; |
| 168 | } |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | |
| 173 | #else |
| 174 | |
| 175 | #endif /* __APPLE__ */ |
| 176 | |