From d3da92aea4e865b72194ecc76e0eab6e2a1179a3 Mon Sep 17 00:00:00 2001
From: Stefano Pigozzi <stefano.pigozzi@gmail.com>
Date: Sat, 14 Apr 2012 15:02:28 +0200
Subject: [PATCH] cocoa_common, gl_common: add OSX specific getProcAddress

Run dlopen on the OpenGL dynamic library instead of on the binary.
This should prevent crashes due to function conflicts when X11/lGL is
linked.

Remove mutual exclusion of the X11 and Cocoa backends.
---
 configure            |  2 +-
 libvo/cocoa_common.h |  1 +
 libvo/cocoa_common.m | 15 +++++++++++++++
 libvo/gl_common.c    |  2 +-
 4 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 4a6e209d3a..7b99766d2d 100755
--- a/configure
+++ b/configure
@@ -4544,7 +4544,7 @@ int main(int argc, char *argv[]) {
 EOF
   _gl=no
   for _ld_tmp in "" -lGL "-lGL -lXdamage" "-lGL $_ld_pthread" ; do
-    if test "$_cocoa" != yes && cc_check $_ld_tmp $_ld_lm ; then
+    if cc_check $_ld_tmp $_ld_lm ; then
       _gl=yes
       _gl_x11=yes
       libs_mplayer="$libs_mplayer $_ld_tmp $_ld_dl"
diff --git a/libvo/cocoa_common.h b/libvo/cocoa_common.h
index 89b0ea663b..e8cd7d9dc4 100644
--- a/libvo/cocoa_common.h
+++ b/libvo/cocoa_common.h
@@ -23,6 +23,7 @@
 #include "video_out.h"
 
 bool vo_cocoa_gui_running(void);
+void *vo_cocoa_glgetaddr(const char *s);
 
 int vo_cocoa_init(struct vo *vo);
 void vo_cocoa_uninit(struct vo *vo);
diff --git a/libvo/cocoa_common.m b/libvo/cocoa_common.m
index 63e8e90db4..5cc29cc78b 100644
--- a/libvo/cocoa_common.m
+++ b/libvo/cocoa_common.m
@@ -21,6 +21,8 @@
 #import <OpenGL/OpenGL.h>
 #import <QuartzCore/QuartzCore.h>
 #import <CoreServices/CoreServices.h> // for CGDisplayHideCursor
+#include <dlfcn.h>
+
 #include "cocoa_common.h"
 
 #include "options.h"
@@ -117,6 +119,19 @@ bool vo_cocoa_gui_running(void)
     return !!s;
 }
 
+void *vo_cocoa_glgetaddr(const char *s)
+{
+    void *ret = NULL;
+    void *handle = dlopen(
+        "/System/Library/Frameworks/OpenGL.framework/OpenGL",
+        RTLD_LAZY | RTLD_LOCAL);
+    if (!handle)
+        return NULL;
+    ret = dlsym(handle, s);
+    dlclose(handle);
+    return ret;
+}
+
 int vo_cocoa_init(struct vo *vo)
 {
     s = vo_cocoa_init_state();
diff --git a/libvo/gl_common.c b/libvo/gl_common.c
index 30ed50e95e..3b723493db 100644
--- a/libvo/gl_common.c
+++ b/libvo/gl_common.c
@@ -1628,7 +1628,7 @@ static int create_window_cocoa(struct MPGLContext *ctx, uint32_t d_width,
 static int setGlWindow_cocoa(MPGLContext *ctx)
 {
     vo_cocoa_change_attributes(ctx->vo);
-    getFunctions(ctx->gl, (void *)getdladdr, NULL);
+    getFunctions(ctx->gl, (void *)vo_cocoa_glgetaddr, NULL);
     if (!ctx->gl->SwapInterval)
         ctx->gl->SwapInterval = vo_cocoa_swap_interval;
     return SET_WINDOW_OK;