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/* GStreamer
*
* Copyright (C) 2013 Matthew Waters <ystreet00@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <gst/check/gstcheck.h>
#include <gst/gl/gstglcontext.h>
#include <stdio.h>
#if GST_GL_HAVE_GLES2
/* *INDENT-OFF* */
static const gchar *vertex_shader_str_gles2 =
"attribute vec4 a_position; \n"
"attribute vec2 a_texCoord; \n"
"varying vec2 v_texCoord; \n"
"void main() \n"
"{ \n"
" gl_Position = a_position; \n"
" v_texCoord = a_texCoord; \n"
"} \n";
static const gchar *fragment_shader_str_gles2 =
"precision mediump float; \n"
"varying vec2 v_texCoord; \n"
"uniform sampler2D s_texture; \n"
"void main() \n"
"{ \n"
" gl_FragColor = texture2D( s_texture, v_texCoord );\n"
"} \n";
/* *INDENT-ON* */
#endif
static GstGLDisplay *display;
static void
setup (void)
{
display = gst_gl_display_new ();
}
static void
teardown (void)
{
gst_object_unref (display);
}
static GLuint fbo_id, rbo, tex;
static GstGLFramebuffer *fbo;
#if GST_GL_HAVE_GLES2
static GError *error;
static GstGLShader *shader;
static GLint shader_attr_position_loc;
static GLint shader_attr_texture_loc;
#endif
static void
init (gpointer data)
{
GstGLContext *context = data;
/* has to be called in the thread that is going to use the framebuffer */
fbo = gst_gl_framebuffer_new (context);
gst_gl_framebuffer_generate (fbo, 320, 240, &fbo_id, &rbo);
fail_if (fbo == NULL || fbo_id == 0, "failed to create framebuffer object");
gst_gl_context_gen_texture (context, &tex, GST_VIDEO_FORMAT_RGBA, 320, 240);
fail_if (tex == 0, "failed to create texture");
#if GST_GL_HAVE_GLES2
if (gst_gl_context_get_gl_api (context) & GST_GL_API_GLES2) {
shader = gst_gl_shader_new (context);
fail_if (shader == NULL, "failed to create shader object");
gst_gl_shader_set_vertex_source (shader, vertex_shader_str_gles2);
gst_gl_shader_set_fragment_source (shader, fragment_shader_str_gles2);
error = NULL;
gst_gl_shader_compile (shader, &error);
fail_if (error != NULL, "Error compiling shader %s\n",
error ? error->message : "Unknown Error");
shader_attr_position_loc =
gst_gl_shader_get_attribute_location (shader, "a_position");
shader_attr_texture_loc =
gst_gl_shader_get_attribute_location (shader, "a_texCoord");
}
#endif
}
static void
deinit (gpointer data)
{
GstGLContext *context = data;
GstGLFuncs *gl = context->gl_vtable;
gl->DeleteTextures (1, &tex);;
gst_object_unref (fbo);
#if GST_GL_HAVE_GLES2
if (gst_gl_context_get_gl_api (context) & GST_GL_API_GLES2)
gst_object_unref (shader);
#endif
}
static void
clear_tex (gpointer data)
{
GstGLContext *context = data;
GstGLFuncs *gl = context->gl_vtable;
static gfloat r = 0.0, g = 0.0, b = 0.0;
gl->ClearColor (r, g, b, 1.0);
gl->Clear (GL_COLOR_BUFFER_BIT);
r = r > 1.0 ? 0.0 : r + 0.03;
g = g > 1.0 ? 0.0 : g + 0.01;
b = b > 1.0 ? 0.0 : b + 0.015;
}
static void
draw_tex (gpointer data)
{
gst_gl_framebuffer_use_v2 (fbo, 320, 240, fbo_id, rbo, tex,
(GLCB_V2) clear_tex, data);
}
static void
draw_render (gpointer data)
{
GstGLContext *context = data;
GstGLContextClass *context_class = GST_GL_CONTEXT_GET_CLASS (context);
const GstGLFuncs *gl = context->gl_vtable;
/* redraw the texture into the system provided framebuffer */
#if GST_GL_HAVE_OPENGL
if (gst_gl_context_get_gl_api (context) & GST_GL_API_OPENGL) {
GLfloat verts[8] = { 1.0f, 1.0f,
-1.0f, 1.0f,
-1.0f, -1.0f,
1.0f, -1.0f
};
GLfloat texcoords[8] = { 1.0f, 0.0f,
0.0f, 0.0f,
0.0f, 1.0f,
1.0f, 1.0f
};
gl->Viewport (0, 0, 320, 240);
gl->Clear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gl->MatrixMode (GL_PROJECTION);
gl->LoadIdentity ();
gl->Enable (GL_TEXTURE_2D);
gl->BindTexture (GL_TEXTURE_2D, tex);
gl->EnableClientState (GL_VERTEX_ARRAY);
gl->EnableClientState (GL_TEXTURE_COORD_ARRAY);
gl->VertexPointer (2, GL_FLOAT, 0, &verts);
gl->TexCoordPointer (2, GL_FLOAT, 0, &texcoords);
gl->DrawArrays (GL_TRIANGLE_FAN, 0, 4);
gl->DisableClientState (GL_VERTEX_ARRAY);
gl->DisableClientState (GL_TEXTURE_COORD_ARRAY);
gl->Disable (GL_TEXTURE_2D);
}
#endif
#if GST_GL_HAVE_GLES2
if (gst_gl_context_get_gl_api (context) & GST_GL_API_GLES2) {
const GLfloat vVertices[] = { 1.0f, 1.0f, 0.0f,
1.0f, 0.0f,
-1.0f, 1.0f, 0.0f,
0.0f, 0.0f,
-1.0f, -1.0f, 0.0f,
0.0f, 1.0f,
1.0f, -1.0f, 0.0f,
1.0f, 1.0f
};
GLushort indices[] = { 0, 1, 2, 0, 2, 3 };
gl->Clear (GL_COLOR_BUFFER_BIT);
gst_gl_shader_use (shader);
/* Load the vertex position */
gl->VertexAttribPointer (shader_attr_position_loc, 3,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), vVertices);
/* Load the texture coordinate */
gl->VertexAttribPointer (shader_attr_texture_loc, 2,
GL_FLOAT, GL_FALSE, 5 * sizeof (GLfloat), &vVertices[3]);
gl->EnableVertexAttribArray (shader_attr_position_loc);
gl->EnableVertexAttribArray (shader_attr_texture_loc);
gl->ActiveTexture (GL_TEXTURE0);
gl->BindTexture (GL_TEXTURE_2D, tex);
gst_gl_shader_set_uniform_1i (shader, "s_texture", 0);
gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
}
#endif
context_class->swap_buffers (context);
}
GST_START_TEST (test_share)
{
GstGLContext *context;
GstGLWindow *window;
GstGLContext *other_context;
GstGLWindow *other_window;
GError *error = NULL;
gint i = 0;
context = gst_gl_context_new (display);
window = gst_gl_window_new (display);
gst_gl_context_set_window (context, window);
gst_gl_context_create (context, 0, &error);
fail_if (error != NULL, "Error creating master context %s\n",
error ? error->message : "Unknown Error");
other_window = gst_gl_window_new (display);
other_context = gst_gl_context_new (display);
gst_gl_context_set_window (other_context, other_window);
gst_gl_context_create (other_context, context, &error);
fail_if (error != NULL, "Error creating secondary context %s\n",
error ? error->message : "Unknown Error");
/* make the window visible */
gst_gl_window_draw (window, 320, 240);
gst_gl_window_send_message (other_window, GST_GL_WINDOW_CB (init), context);
while (i < 10) {
gst_gl_window_send_message (other_window, GST_GL_WINDOW_CB (draw_tex),
context);
gst_gl_window_send_message (window, GST_GL_WINDOW_CB (draw_render),
context);
i++;
}
gst_gl_window_send_message (other_window, GST_GL_WINDOW_CB (deinit), context);
gst_object_unref (window);
gst_object_unref (other_window);
gst_object_unref (other_context);
gst_object_unref (context);
}
GST_END_TEST;
GST_START_TEST (test_wrapped_context)
{
GstGLContext *context, *other_context, *wrapped_context;
GstGLWindow *window, *other_window;
GError *error = NULL;
gint i = 0;
guintptr handle;
GstGLPlatform platform;
GstGLAPI apis;
context = gst_gl_context_new (display);
window = gst_gl_window_new (display);
gst_gl_context_set_window (context, window);
gst_gl_context_create (context, 0, &error);
fail_if (error != NULL, "Error creating master context %s\n",
error ? error->message : "Unknown Error");
handle = gst_gl_context_get_gl_context (context);
platform = gst_gl_context_get_gl_platform (context);
apis = gst_gl_context_get_gl_api (context);
wrapped_context =
gst_gl_context_new_wrapped (display, handle, platform, apis);
other_context = gst_gl_context_new (display);
other_window = gst_gl_window_new (display);
gst_gl_context_set_window (other_context, other_window);
gst_gl_context_create (other_context, wrapped_context, &error);
fail_if (error != NULL, "Error creating secondary context %s\n",
error ? error->message : "Unknown Error");
/* make the window visible */
gst_gl_window_draw (window, 320, 240);
gst_gl_window_send_message (other_window, GST_GL_WINDOW_CB (init), context);
while (i < 10) {
gst_gl_window_send_message (other_window, GST_GL_WINDOW_CB (draw_tex),
context);
gst_gl_window_send_message (window, GST_GL_WINDOW_CB (draw_render),
context);
i++;
}
gst_gl_window_send_message (other_window, GST_GL_WINDOW_CB (deinit), context);
gst_object_unref (window);
gst_object_unref (other_window);
gst_object_unref (other_context);
gst_object_unref (context);
gst_object_unref (wrapped_context);
}
GST_END_TEST;
static Suite *
gst_gl_context_suite (void)
{
Suite *s = suite_create ("GstGLContext");
TCase *tc_chain = tcase_create ("general");
suite_add_tcase (s, tc_chain);
tcase_add_checked_fixture (tc_chain, setup, teardown);
tcase_add_test (tc_chain, test_share);
tcase_add_test (tc_chain, test_wrapped_context);
return s;
}
GST_CHECK_MAIN (gst_gl_context);