From dce95078ece1a3a08c290ddc6191cb92e15542d5 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Jos=C3=A9=20Fonseca?= <jose.r.fonseca@gmail.com>
Date: Mon, 12 Mar 2012 20:46:53 +0000
Subject: [PATCH] Compensate for the lack of LD_PRELOAD support on ANDROID

Untested.
---
 egltrace.py    |  9 +++++++++
 glproc_egl.cpp | 26 ++++++++++++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/egltrace.py b/egltrace.py
index 1787c0b..5d5c759 100644
--- a/egltrace.py
+++ b/egltrace.py
@@ -113,6 +113,12 @@ if __name__ == '__main__':
     print r'''
 
 
+/*
+ * Android does not support LD_PRELOAD.
+ */
+#if !defined(ANDROID)
+
+
 /*
  * Invoke the true dlopen() function.
  */
@@ -186,5 +192,8 @@ void * dlopen(const char *filename, int flag)
 }
 
 
+#endif /* !ANDROID */
+
+
 
 '''
diff --git a/glproc_egl.cpp b/glproc_egl.cpp
index ec167a7..53dd714 100644
--- a/glproc_egl.cpp
+++ b/glproc_egl.cpp
@@ -73,7 +73,33 @@ void *__libGlHandle = NULL;
 void *
 __getPublicProcAddress(const char *procName)
 {
+#if defined(ANDROID)
+    /*
+     * Android does not support LD_PRELOAD.  It is assumed that applications
+     * are explicitely loading egltrace.so.
+     */
+    void *lib = NULL;
+    if (procName[0] == 'e' && procName[1] == 'g' && procName[2] == 'l') {
+        static void *libEGL = NULL;
+        if (!libEGL) {
+            libEGL = dlopen("libEGL.so", RTLD_LOCAL | RTLD_LAZY);
+        }
+        lib = libEGL;
+    } else if (procName[0] == 'g' && procName[1] == 'l') {
+        /* TODO: Support libGLESv1_CM.so too somehow. */
+        static void *libGLESv2 = NULL;
+        if (!libGLESv2) {
+            libGLESv2 = dlopen("libGLESv2.so", RTLD_LOCAL | RTLD_LAZY);
+        }
+        lib = libGLESv2;
+    }
+    if (lib) {
+        return dlsym(lib, procName);
+    }
+    return NULL;
+#else
     return dlsym(RTLD_NEXT, procName);
+#endif
 }
 
 /*
-- 
2.45.2