examples: add an example aplication based OpenGL ES + EGL

Application that shows how to integrate playbin with an OpenGL ES
scene through EGL. Renders a video on the surfaces of an animated cube.

The code is not ported to 1.x so it's not built by default.

Makefile.am

@@ -1,5 +1,9 @@
 SUBDIRS = common omx tools config
 
+# if BUILD_EXAMPLES
+# SUBDIRS += examples
+# endif
+
 ACLOCAL_AMFLAGS = -I m4 -I common/m4
 
 DISTCLEANFILES = _stdint.h

configure.ac

@@ -149,7 +149,9 @@ AG_GST_CHECK_GST_PLUGINS_BASE($GST_API_VERSION, [$GST_REQ], yes)
 AM_CONDITIONAL(HAVE_GST_CHECK, test "x$HAVE_GST_CHECK" = "xyes")
 PKG_CHECK_MODULES([GST_EGL], [gstreamer-egl-1.0], [
   AC_DEFINE(HAVE_GST_EGL, 1, [Have gstreamer-egl])
+  GST_EGL=yes
 ])
+AM_CONDITIONAL(HAVE_GST_EGL, test "x$GST_EGL" = "xyes")
 
 dnl Check for documentation xrefs
 GLIB_PREFIX="`$PKG_CONFIG --variable=prefix glib-2.0`"
@@ -361,6 +363,8 @@ tools/Makefile
 config/Makefile
 config/bellagio/Makefile
 config/rpi/Makefile
+examples/Makefile
+examples/egl/Makefile
 )
 
 AC_OUTPUT

examples/Makefile.am

@@ -0,0 +1,5 @@
+if HAVE_GST_EGL
+SUBDIRS = egl
+endif
+
+DIST_SUBDIRS = egl

examples/egl/Makefile.am

@@ -0,0 +1,19 @@
+noinst_PROGRAMS = testegl
+
+testegl_SOURCES = testegl.c
+
+noinst_HEADERS = cube_texture_and_coords.h
+
+testegl_LDADD = \
+	$(GST_PLUGINS_BASE_LIBS) \
+  -lgstapp-@GST_MAJORMINOR@ \
+	$(GST_BASE_LIBS) \
+	$(GST_LIBS) \
+	$(GST_EGL_LIBS)
+
+testegl_CFLAGS = \
+	$(GST_PLUGINS_BASE_CFLAGS) \
+	$(GST_BASE_CFLAGS) \
+	$(GST_CFLAGS) \
+	$(GST_EGL_CFLAGS)
+

examples/egl/cube_texture_and_coords.h

@@ -0,0 +1,100 @@
+/*
+Copyright (c) 2012, Broadcom Europe Ltd
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of the copyright holder nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+// Spatial coordinates for the cube
+
+static const GLbyte quadx[6*4*3] = {
+   /* FRONT */
+   -10, -10,  10,
+   10, -10,  10,
+   -10,  10,  10,
+   10,  10,  10,
+
+   /* BACK */
+   -10, -10, -10,
+   -10,  10, -10,
+   10, -10, -10,
+   10,  10, -10,
+
+   /* LEFT */
+   -10, -10,  10,
+   -10,  10,  10,
+   -10, -10, -10,
+   -10,  10, -10,
+
+   /* RIGHT */
+   10, -10, -10,
+   10,  10, -10,
+   10, -10,  10,
+   10,  10,  10,
+
+   /* TOP */
+   -10,  10,  10,
+   10,  10,  10,
+   -10,  10, -10,
+   10,  10, -10,
+
+   /* BOTTOM */
+   -10, -10,  10,
+   -10, -10, -10,
+   10, -10,  10,
+   10, -10, -10,
+};
+
+/** Texture coordinates for the quad. */
+static const GLfloat texCoords[6 * 4 * 2] = {
+   0.f,  0.f,
+   1.f,  0.f,
+   0.f,  1.f,
+   1.f,  1.f,
+
+   0.f,  0.f,
+   1.f,  0.f,
+   0.f,  1.f,
+   1.f,  1.f,
+
+   0.f,  0.f,
+   1.f,  0.f,
+   0.f,  1.f,
+   1.f,  1.f,
+
+   0.f,  0.f,
+   1.f,  0.f,
+   0.f,  1.f,
+   1.f,  1.f,
+
+   0.f,  0.f,
+   1.f,  0.f,
+   0.f,  1.f,
+   1.f,  1.f,
+
+   0.f,  0.f,
+   1.f,  0.f,
+   0.f,  1.f,
+   1.f,  1.f,
+};
+