static gboolean
gst_gl_context_egl_create_context (GstGLContext * context,
GstGLAPI gl_api, GstGLContext * other_context, GError ** error)
{
GstGLContextEGL *egl;
GstGLWindow *window = NULL;
EGLNativeWindowType window_handle = (EGLNativeWindowType) 0;
EGLint egl_major;
EGLint egl_minor;
gboolean need_surface = TRUE;
guintptr external_gl_context = 0;
guintptr egl_display;
egl = GST_GL_CONTEXT_EGL (context);
window = gst_gl_context_get_window (context);
GST_DEBUG_OBJECT (context, "Creating EGL context");
if (other_context) {
if (gst_gl_context_get_gl_platform (other_context) != GST_GL_PLATFORM_EGL) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Cannot share context with non-EGL context");
goto failure;
}
external_gl_context = gst_gl_context_get_gl_context (other_context);
}
if ((gl_api & (GST_GL_API_OPENGL | GST_GL_API_OPENGL3 | GST_GL_API_GLES2)) ==
GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
"EGL supports opengl or gles2");
goto failure;
}
if (!egl->display_egl) {
GstGLDisplay *display = gst_gl_context_get_display (context);
egl->display_egl = gst_gl_display_egl_from_gl_display (display);
if (!egl->display_egl) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE,
"Failed to create EGLDisplay from native display");
goto failure;
}
gst_object_unref (display);
}
egl_display = gst_gl_display_get_handle (GST_GL_DISPLAY (egl->display_egl));
egl->egl_display = (EGLDisplay) egl_display;
if (eglInitialize (egl->egl_display, &egl_major, &egl_minor)) {
GST_INFO ("egl initialized, version: %d.%d", egl_major, egl_minor);
} else {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE,
"Failed to initialize egl: %s",
gst_egl_get_error_string (eglGetError ()));
goto failure;
}
egl->egl_exts = eglQueryString (egl->egl_display, EGL_EXTENSIONS);
if (gl_api & (GST_GL_API_OPENGL | GST_GL_API_OPENGL3)) {
GstGLAPI chosen_gl_api = 0;
gint i;
/* egl + opengl only available with EGL 1.4+ */
if (egl_major == 1 && egl_minor <= 3) {
if ((gl_api & ~GST_GL_API_OPENGL) == GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_OLD_LIBS,
"EGL version (%i.%i) too old for OpenGL support, (needed at least 1.4)",
egl_major, egl_minor);
goto failure;
} else {
GST_WARNING
("EGL version (%i.%i) too old for OpenGL support, (needed at least 1.4)",
egl_major, egl_minor);
if (gl_api & GST_GL_API_GLES2) {
goto try_gles2;
} else {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Failed to choose a suitable OpenGL API");
goto failure;
}
}
}
if (!eglBindAPI (EGL_OPENGL_API)) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
"Failed to bind OpenGL API: %s",
gst_egl_get_error_string (eglGetError ()));
goto failure;
}
GST_INFO ("Bound OpenGL");
/* api, version only matters for gles */
if (!gst_gl_context_egl_choose_config (egl, GST_GL_API_OPENGL, 0, error)) {
g_assert (error == NULL || *error != NULL);
goto failure;
}
for (i = 0; i < G_N_ELEMENTS (opengl_versions); i++) {
gint profileMask = 0;
gint contextFlags = 0;
if (GST_GL_CHECK_GL_VERSION (opengl_versions[i].major,
opengl_versions[i].minor, 3, 2)) {
/* skip gl3 contexts if requested */
if ((gl_api & GST_GL_API_OPENGL3) == 0)
continue;
chosen_gl_api = GST_GL_API_OPENGL3;
#if defined(EGL_KHR_create_context)
profileMask |= EGL_CONTEXT_OPENGL_CORE_PROFILE_BIT_KHR;
contextFlags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
#endif
} else if (opengl_versions[i].major == 3 && opengl_versions[i].minor == 1) {
/* skip 3.1, the implementation is free to give us either a core or a
* compatibility context (we have no say) */
continue;
} else {
/* skip legacy contexts if requested */
if ((gl_api & GST_GL_API_OPENGL) == 0)
continue;
chosen_gl_api = GST_GL_API_OPENGL;
}
egl->egl_context =
_create_context_with_flags (egl, (EGLContext) external_gl_context,
chosen_gl_api, opengl_versions[i].major,
opengl_versions[i].minor, contextFlags, profileMask);
if (egl->egl_context)
break;
#if defined(EGL_KHR_create_context)
profileMask &= ~EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
egl->egl_context =
_create_context_with_flags (egl, (EGLContext) external_gl_context,
chosen_gl_api, opengl_versions[i].major,
opengl_versions[i].minor, contextFlags, profileMask);
if (egl->egl_context)
break;
#endif
}
egl->gl_api = chosen_gl_api;
} else if (gl_api & GST_GL_API_GLES2) {
gint i;
try_gles2:
if (!eglBindAPI (EGL_OPENGL_ES_API)) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
"Failed to bind OpenGL|ES API: %s",
gst_egl_get_error_string (eglGetError ()));
goto failure;
}
GST_INFO ("Bound OpenGL|ES");
for (i = 0; i < G_N_ELEMENTS (gles2_versions); i++) {
gint profileMask = 0;
gint contextFlags = 0;
if (!gst_gl_context_egl_choose_config (egl, GST_GL_API_GLES2,
gles2_versions[i].major, error)) {
continue;
}
#if defined(EGL_KHR_create_context)
/* try a debug context */
contextFlags |= EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
egl->egl_context =
_create_context_with_flags (egl, (EGLContext) external_gl_context,
GST_GL_API_GLES2, gles2_versions[i].major,
gles2_versions[i].minor, contextFlags, profileMask);
if (egl->egl_context)
break;
/* try without a debug context */
contextFlags &= ~EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
#endif
egl->egl_context =
_create_context_with_flags (egl, (EGLContext) external_gl_context,
GST_GL_API_GLES2, gles2_versions[i].major,
gles2_versions[i].minor, contextFlags, profileMask);
if (egl->egl_context)
break;
}
egl->gl_api = GST_GL_API_GLES2;
}
if (egl->egl_context != EGL_NO_CONTEXT) {
GST_INFO ("gl context created: %" G_GUINTPTR_FORMAT,
(guintptr) egl->egl_context);
} else {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
"Failed to create a OpenGL context: %s",
gst_egl_get_error_string (eglGetError ()));
goto failure;
}
/* FIXME do we want a window vfunc ? */
#if GST_GL_HAVE_WINDOW_X11
if (GST_IS_GL_WINDOW_X11 (context->window)) {
gst_gl_window_x11_create_window ((GstGLWindowX11 *) context->window);
}
#endif
if (other_context == NULL) {
/* FIXME: fails to show two outputs at all. We need a property/option for
* glimagesink to say its a visible context */
#if GST_GL_HAVE_WINDOW_WAYLAND
if (GST_IS_GL_WINDOW_WAYLAND_EGL (context->window)) {
gst_gl_window_wayland_egl_create_window ((GstGLWindowWaylandEGL *)
context->window);
}
#endif
#if GST_GL_HAVE_WINDOW_WIN32
if (GST_IS_GL_WINDOW_WIN32 (context->window)) {
gst_gl_window_win32_create_window ((GstGLWindowWin32 *) context->window);
}
#endif
#if GST_GL_HAVE_WINDOW_DISPMANX
if (GST_IS_GL_WINDOW_DISPMANX_EGL (context->window)) {
gst_gl_window_dispmanx_egl_create_window ((GstGLWindowDispmanxEGL *)
context->window);
}
#endif
}
if (window)
window_handle =
(EGLNativeWindowType) gst_gl_window_get_window_handle (window);
if (window_handle) {
GST_DEBUG ("Creating EGLSurface from window_handle %p",
(void *) window_handle);
egl->egl_surface =
eglCreateWindowSurface (egl->egl_display, egl->egl_config,
window_handle, NULL);
/* Store window handle for later comparision */
egl->window_handle = window_handle;
} else if (!gst_gl_check_extension ("EGL_KHR_surfaceless_context",
egl->egl_exts)) {
EGLint surface_attrib[7];
gint j = 0;
GST_DEBUG ("Surfaceless context, creating PBufferSurface");
/* FIXME: Width/height doesn't seem to matter but we can't leave them
* at 0, otherwise X11 complains about BadValue */
surface_attrib[j++] = EGL_WIDTH;
surface_attrib[j++] = 1;
surface_attrib[j++] = EGL_HEIGHT;
surface_attrib[j++] = 1;
surface_attrib[j++] = EGL_LARGEST_PBUFFER;
surface_attrib[j++] = EGL_TRUE;
surface_attrib[j++] = EGL_NONE;
egl->egl_surface =
eglCreatePbufferSurface (egl->egl_display, egl->egl_config,
surface_attrib);
} else {
GST_DEBUG ("No surface/handle !");
egl->egl_surface = EGL_NO_SURFACE;
need_surface = FALSE;
}
if (need_surface) {
if (egl->egl_surface != EGL_NO_SURFACE) {
GST_INFO ("surface created");
} else {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
"Failed to create window surface: %s",
gst_egl_get_error_string (eglGetError ()));
goto failure;
}
}
egl->egl_major = egl_major;
egl->egl_minor = egl_minor;
if (window)
gst_object_unref (window);
return TRUE;
failure:
if (window)
gst_object_unref (window);
return FALSE;
}
static gboolean
gst_gl_context_egl_create_context (GstGLContext * context,
GstGLAPI gl_api, GstGLContext * other_context, GError ** error)
{
GstGLContextEGL *egl;
GstGLWindow *window = NULL;
EGLNativeWindowType window_handle = (EGLNativeWindowType) 0;
gint i = 0;
EGLint context_attrib[5];
EGLint majorVersion;
EGLint minorVersion;
const gchar *egl_exts;
gboolean need_surface = TRUE;
guintptr external_gl_context = 0;
GstGLDisplay *display;
egl = GST_GL_CONTEXT_EGL (context);
window = gst_gl_context_get_window (context);
GST_DEBUG_OBJECT (context, "Creating EGL context");
if (other_context) {
if (gst_gl_context_get_gl_platform (other_context) != GST_GL_PLATFORM_EGL) {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Cannot share context with non-EGL context");
goto failure;
}
external_gl_context = gst_gl_context_get_gl_context (other_context);
}
if ((gl_api & (GST_GL_API_OPENGL | GST_GL_API_GLES2)) == GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API,
"EGL supports opengl or gles2");
goto failure;
}
display = gst_gl_context_get_display (context);
if (display->type == GST_GL_DISPLAY_TYPE_EGL) {
egl->egl_display = (EGLDisplay) gst_gl_display_get_handle (display);
} else {
guintptr native_display = gst_gl_display_get_handle (display);
if (!native_display) {
GstGLWindow *window = NULL;
GST_WARNING ("Failed to get a global display handle, falling back to "
"per-window display handles. Context sharing may not work");
if (other_context)
window = gst_gl_context_get_window (other_context);
if (!window)
window = gst_gl_context_get_window (context);
if (window) {
native_display = gst_gl_window_get_display (window);
gst_object_unref (window);
}
}
egl->egl_display = eglGetDisplay ((EGLNativeDisplayType) native_display);
}
gst_object_unref (display);
if (eglInitialize (egl->egl_display, &majorVersion, &minorVersion)) {
GST_INFO ("egl initialized, version: %d.%d", majorVersion, minorVersion);
} else {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE,
"Failed to initialize egl: %s", gst_gl_context_egl_get_error_string ());
goto failure;
}
if (gl_api & GST_GL_API_OPENGL) {
/* egl + opengl only available with EGL 1.4+ */
if (majorVersion == 1 && minorVersion <= 3) {
if ((gl_api & ~GST_GL_API_OPENGL) == GST_GL_API_NONE) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_OLD_LIBS,
"EGL version (%i.%i) too old for OpenGL support, (needed at least 1.4)",
majorVersion, minorVersion);
goto failure;
} else {
GST_WARNING
("EGL version (%i.%i) too old for OpenGL support, (needed at least 1.4)",
majorVersion, minorVersion);
if (gl_api & GST_GL_API_GLES2) {
goto try_gles2;
} else {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_WRONG_CONFIG,
"Failed to choose a suitable OpenGL API");
goto failure;
}
}
}
if (!eglBindAPI (EGL_OPENGL_API)) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
"Failed to bind OpenGL API: %s",
gst_gl_context_egl_get_error_string ());
goto failure;
}
GST_INFO ("Using OpenGL");
egl->gl_api = GST_GL_API_OPENGL;
} else if (gl_api & GST_GL_API_GLES2) {
try_gles2:
if (!eglBindAPI (EGL_OPENGL_ES_API)) {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
"Failed to bind OpenGL|ES API: %s",
gst_gl_context_egl_get_error_string ());
goto failure;
}
GST_INFO ("Using OpenGL|ES 2.0");
egl->gl_api = GST_GL_API_GLES2;
}
if (!gst_gl_context_egl_choose_config (egl, other_context, error)) {
g_assert (error == NULL || *error != NULL);
goto failure;
}
egl_exts = eglQueryString (egl->egl_display, EGL_EXTENSIONS);
GST_DEBUG ("about to create gl context");
if (egl->gl_api & GST_GL_API_GLES2) {
context_attrib[i++] = EGL_CONTEXT_CLIENT_VERSION;
context_attrib[i++] = 2;
}
#if !defined(GST_DISABLE_GST_DEBUG) && defined(EGL_KHR_create_context)
if (gst_gl_check_extension ("EGL_KHR_create_context", egl_exts)) {
context_attrib[i++] = EGL_CONTEXT_FLAGS_KHR;
context_attrib[i++] = EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR;
}
#endif
context_attrib[i++] = EGL_NONE;
egl->egl_context =
eglCreateContext (egl->egl_display, egl->egl_config,
(EGLContext) external_gl_context, context_attrib);
#ifdef EGL_KHR_create_context
if (egl->egl_context == EGL_NO_CONTEXT && egl->gl_api & GST_GL_API_GLES2
&& eglGetError () != EGL_SUCCESS) {
/* try without EGL_CONTEXT_FLAGS flags as it was added to
* EGL_KHR_create_context for gles contexts */
int i;
for (i = 0; i < G_N_ELEMENTS (context_attrib); i++) {
if (context_attrib[i] == EGL_CONTEXT_FLAGS_KHR ||
context_attrib[i] == EGL_CONTEXT_OPENGL_DEBUG_BIT_KHR)
context_attrib[i] = EGL_NONE;
}
egl->egl_context =
eglCreateContext (egl->egl_display, egl->egl_config,
(EGLContext) external_gl_context, context_attrib);
}
#endif
if (egl->egl_context != EGL_NO_CONTEXT) {
GST_INFO ("gl context created: %" G_GUINTPTR_FORMAT,
(guintptr) egl->egl_context);
} else {
g_set_error (error, GST_GL_CONTEXT_ERROR,
GST_GL_CONTEXT_ERROR_CREATE_CONTEXT,
"Failed to create a OpenGL context: %s",
gst_gl_context_egl_get_error_string ());
goto failure;
}
/* FIXME do we want a window vfunc ? */
#if GST_GL_HAVE_WINDOW_X11
if (GST_GL_IS_WINDOW_X11 (context->window)) {
gst_gl_window_x11_create_window ((GstGLWindowX11 *) context->window);
}
#endif
if (other_context == NULL) {
#if GST_GL_HAVE_WINDOW_WAYLAND
if (GST_GL_IS_WINDOW_WAYLAND_EGL (context->window)) {
gst_gl_window_wayland_egl_create_window ((GstGLWindowWaylandEGL *)
context->window);
}
#endif
#if GST_GL_HAVE_WINDOW_WIN32
if (GST_GL_IS_WINDOW_WIN32 (context->window)) {
gst_gl_window_win32_create_window ((GstGLWindowWin32 *) context->window);
}
#endif
#if GST_GL_HAVE_WINDOW_DISPMANX
if (GST_GL_IS_WINDOW_DISPMANX_EGL (context->window)) {
gst_gl_window_dispmanx_egl_create_window ((GstGLWindowDispmanxEGL *)
context->window);
}
#endif
}
if (window)
window_handle =
(EGLNativeWindowType) gst_gl_window_get_window_handle (window);
if (window_handle) {
GST_DEBUG ("Creating EGLSurface from window_handle %p",
(void *) window_handle);
egl->egl_surface =
eglCreateWindowSurface (egl->egl_display, egl->egl_config,
window_handle, NULL);
/* Store window handle for later comparision */
egl->window_handle = window_handle;
} else if (!gst_gl_check_extension ("EGL_KHR_surfaceless_context", egl_exts)) {
EGLint surface_attrib[7];
gint j = 0;
GST_DEBUG ("Surfaceless context, creating PBufferSurface");
/* FIXME: Width/height doesn't seem to matter but we can't leave them
* at 0, otherwise X11 complains about BadValue */
surface_attrib[j++] = EGL_WIDTH;
surface_attrib[j++] = 1;
surface_attrib[j++] = EGL_HEIGHT;
surface_attrib[j++] = 1;
surface_attrib[j++] = EGL_LARGEST_PBUFFER;
surface_attrib[j++] = EGL_TRUE;
surface_attrib[j++] = EGL_NONE;
egl->egl_surface =
eglCreatePbufferSurface (egl->egl_display, egl->egl_config,
surface_attrib);
} else {
GST_DEBUG ("No surface/handle !");
egl->egl_surface = EGL_NO_SURFACE;
need_surface = FALSE;
}
if (need_surface) {
if (egl->egl_surface != EGL_NO_SURFACE) {
GST_INFO ("surface created");
} else {
g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED,
"Failed to create window surface: %s",
gst_gl_context_egl_get_error_string ());
goto failure;
}
}
/* EGLImage functions */
if (GST_GL_CHECK_GL_VERSION (majorVersion, minorVersion, 1, 5)) {
egl->eglCreateImage = gst_gl_context_get_proc_address (context,
"eglCreateImage");
egl->eglDestroyImage = gst_gl_context_get_proc_address (context,
"eglDestroyImage");
} else if (gst_gl_check_extension ("EGL_KHR_image_base", egl_exts)) {
egl->eglCreateImage = gst_gl_context_get_proc_address (context,
"eglCreateImageKHR");
egl->eglDestroyImage = gst_gl_context_get_proc_address (context,
"eglDestroyImageKHR");
}
if (egl->eglCreateImage == NULL || egl->eglDestroyImage == NULL) {
egl->eglCreateImage = NULL;
egl->eglDestroyImage = NULL;
}
if (window)
gst_object_unref (window);
return TRUE;
failure:
if (window)
gst_object_unref (window);
return FALSE;
}
