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plugins: refactor gst_vaapi_create_display_from_gl_context()
gst_vaapi_create_display_from_gl_context() was a spaghetti mess. This path refactors it, in order to make the code readable and easy to follow. https://bugzilla.gnome.org/show_bug.cgi?id=796564
This commit is contained in:
Víctor Manuel Jáquez Leal
parent
b0bebebc01
commit
94709d49c6
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@ -134,153 +134,189 @@ gst_vaapi_create_display_from_handle (GstVaapiDisplayType display_type,
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}
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#endif
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#if USE_GST_GL_HELPERS
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static GstVaapiDisplayType
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gst_vaapi_get_display_type_from_gl (GstGLDisplayType gl_display_type,
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GstGLPlatform gl_platform)
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{
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switch (gl_display_type) {
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#if USE_X11
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case GST_GL_DISPLAY_TYPE_X11:{
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#if USE_GLX
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if (gl_platform == GST_GL_PLATFORM_GLX)
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return GST_VAAPI_DISPLAY_TYPE_GLX;
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#endif
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#endif
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return GST_VAAPI_DISPLAY_TYPE_X11;
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}
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#if USE_WAYLAND
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case GST_GL_DISPLAY_TYPE_WAYLAND:{
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return GST_VAAPI_DISPLAY_TYPE_WAYLAND;
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}
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#endif
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#if USE_EGL
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case GST_GL_DISPLAY_TYPE_EGL:{
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return GST_VAAPI_DISPLAY_TYPE_EGL;
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}
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#endif
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default:
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/* unsupported display. Still DRM may work. */
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break;
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}
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return GST_VAAPI_DISPLAY_TYPE_ANY;
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}
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static GstVaapiDisplayType
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gst_vaapi_get_display_type_from_gl_env ()
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{
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const gchar *const gl_window_type = g_getenv ("GST_GL_WINDOW");
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const gchar *const gl_platform_type = g_getenv ("GST_GL_PLATFORM");
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if (!gl_window_type) {
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#if USE_X11 && GST_GL_HAVE_WINDOW_X11
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return GST_VAAPI_DISPLAY_TYPE_X11;
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#elif USE_WAYLAND && GST_GL_HAVE_WINDOW_WAYLAND
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return GST_VAAPI_DISPLAY_TYPE_WAYLAND;
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#elif USE_EGL && GST_GL_HAVE_PLATFORM_EGL
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return GST_VAAPI_DISPLAY_TYPE_EGL;
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#endif
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}
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#if USE_X11
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if (g_strcmp0 (gl_window_type, "x11") == 0)
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return GST_VAAPI_DISPLAY_TYPE_X11;
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#endif
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#if USE_WAYLAND
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if (g_strcmp0 (gl_window_type, "wayland") == 0)
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return GST_VAAPI_DISPLAY_TYPE_WAYLAND;
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#endif
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#if USE_EGL
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if (g_strcmp0 (gl_platform_type, "egl") == 0)
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return GST_VAAPI_DISPLAY_TYPE_EGL;
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#endif
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return GST_VAAPI_DISPLAY_TYPE_ANY;
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}
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static gint
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gst_vaapi_get_gles_version_from_gl_api (GstGLAPI gl_api)
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{
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switch (gl_api) {
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case GST_GL_API_GLES1:
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return 1;
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case GST_GL_API_GLES2:
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return 2;
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case GST_GL_API_OPENGL:
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case GST_GL_API_OPENGL3:
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return 0;
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default:
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break;
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}
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return -1;
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}
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static guintptr
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gst_vaapi_get_egl_handle_from_gl_display (GstGLDisplay * gl_display)
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{
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guintptr egl_handle = 0;
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#if USE_EGL && GST_GL_HAVE_PLATFORM_EGL
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GstGLDisplayEGL *egl_display;
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egl_display = gst_gl_display_egl_from_gl_display (gl_display);
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if (egl_display) {
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egl_handle = gst_gl_display_get_handle (GST_GL_DISPLAY (egl_display));
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gst_object_unref (egl_display);
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}
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#endif
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return egl_handle;
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}
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static GstVaapiDisplay *
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gst_vaapi_create_display_from_egl (GstGLDisplay * gl_display,
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GstGLContext * gl_context, GstVaapiDisplayType display_type,
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gpointer native_display)
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{
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GstGLAPI gl_api;
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gint gles_version;
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guintptr egl_handler;
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GstVaapiDisplay *display = NULL;
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gl_api = gst_gl_context_get_gl_api (gl_context);
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gles_version = gst_vaapi_get_gles_version_from_gl_api (gl_api);
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if (gles_version == -1)
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return NULL;
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egl_handler = gst_vaapi_get_egl_handle_from_gl_display (gl_display);
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if (egl_handler != 0) {
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gpointer native_display_egl = GSIZE_TO_POINTER (egl_handler);
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display = gst_vaapi_display_egl_new_with_native_display (native_display_egl,
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display_type, gles_version);
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}
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if (!display) {
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GstVaapiDisplay *wrapped_display;
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wrapped_display =
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gst_vaapi_create_display_from_handle (display_type, native_display);
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if (wrapped_display) {
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display = gst_vaapi_display_egl_new (wrapped_display, gles_version);
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gst_vaapi_display_unref (wrapped_display);
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}
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}
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if (display) {
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gst_vaapi_display_egl_set_gl_context (GST_VAAPI_DISPLAY_EGL (display),
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GSIZE_TO_POINTER (gst_gl_context_get_gl_context (gl_context)));
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}
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return display;
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}
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#endif /* USE_GST_GL_HELPERS */
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static GstVaapiDisplay *
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gst_vaapi_create_display_from_gl_context (GstObject * gl_context_object)
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{
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#if USE_GST_GL_HELPERS
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GstGLContext *const gl_context = GST_GL_CONTEXT (gl_context_object);
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GstGLDisplay *const gl_display = gst_gl_context_get_display (gl_context);
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gpointer native_display =
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GSIZE_TO_POINTER (gst_gl_display_get_handle (gl_display));
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GstGLPlatform platform = gst_gl_context_get_gl_platform (gl_context);
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GstVaapiDisplay *display = NULL, *out_display = NULL;
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GstGLDisplayType gl_display_type;
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GstGLPlatform gl_platform;
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gpointer native_display;
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GstVaapiDisplay *display = NULL;
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GstVaapiDisplayType display_type;
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switch (gst_gl_display_get_handle_type (gl_display)) {
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#if USE_X11
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case GST_GL_DISPLAY_TYPE_X11:
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#if USE_GLX
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if (platform == GST_GL_PLATFORM_GLX) {
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display_type = GST_VAAPI_DISPLAY_TYPE_GLX;
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break;
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}
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#endif
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display_type = GST_VAAPI_DISPLAY_TYPE_X11;
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break;
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#endif
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#if USE_WAYLAND
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case GST_GL_DISPLAY_TYPE_WAYLAND:
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display_type = GST_VAAPI_DISPLAY_TYPE_WAYLAND;
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break;
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#endif
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#if USE_EGL
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case GST_GL_DISPLAY_TYPE_EGL:
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display_type = GST_VAAPI_DISPLAY_TYPE_EGL;
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goto egl_display;
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break;
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#endif
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case GST_GL_DISPLAY_TYPE_ANY:{
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/* Derive from the active window */
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GstGLWindow *const gl_window = gst_gl_context_get_window (gl_context);
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const gchar *const gl_window_type = g_getenv ("GST_GL_WINDOW");
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const gchar *const gl_platform_type = g_getenv ("GST_GL_PLATFORM");
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/* Get display type and the native hanler */
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gl_display_type = gst_gl_display_get_handle_type (gl_display);
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gl_platform = gst_gl_context_get_gl_platform (gl_context);
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display_type =
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gst_vaapi_get_display_type_from_gl (gl_display_type, gl_platform);
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display_type = GST_VAAPI_DISPLAY_TYPE_ANY;
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if (!gl_window)
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break;
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native_display = GSIZE_TO_POINTER (gst_gl_display_get_handle (gl_display));
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if (display_type == GST_VAAPI_DISPLAY_TYPE_ANY) {
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/* derive type and native_display from the active window */
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GstGLWindow *const gl_window = gst_gl_context_get_window (gl_context);
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if (gl_window)
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native_display = GSIZE_TO_POINTER (gst_gl_window_get_display (gl_window));
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if (gl_window_type) {
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#if USE_X11
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if (!display_type && g_strcmp0 (gl_window_type, "x11") == 0)
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display_type = GST_VAAPI_DISPLAY_TYPE_X11;
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#endif
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#if USE_WAYLAND
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if (!display_type && g_strcmp0 (gl_window_type, "wayland") == 0)
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display_type = GST_VAAPI_DISPLAY_TYPE_WAYLAND;
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#endif
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#if USE_EGL
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if (!display_type && g_strcmp0 (gl_platform_type, "egl") == 0)
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display_type = GST_VAAPI_DISPLAY_TYPE_EGL;
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#endif
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} else {
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#if USE_X11 && GST_GL_HAVE_WINDOW_X11
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if (!display_type)
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display_type = GST_VAAPI_DISPLAY_TYPE_X11;
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#elif USE_WAYLAND && GST_GL_HAVE_WINDOW_WAYLAND
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if (!display_type)
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display_type = GST_VAAPI_DISPLAY_TYPE_WAYLAND;
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#elif USE_EGL && GST_GL_HAVE_PLATFORM_EGL
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if (!display_type)
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display_type = GST_VAAPI_DISPLAY_TYPE_EGL;
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#endif
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}
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gst_object_unref (gl_window);
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if (display_type == GST_VAAPI_DISPLAY_TYPE_EGL)
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goto egl_display;
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break;
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}
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default:
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display_type = GST_VAAPI_DISPLAY_TYPE_ANY;
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break;
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display_type = gst_vaapi_get_display_type_from_gl_env ();
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}
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display = gst_vaapi_create_display_from_handle (display_type, native_display);
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if (!display)
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goto bail;
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egl_display:
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switch (platform) {
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#if USE_EGL
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case GST_GL_PLATFORM_EGL:{
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guint gles_version;
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guintptr egl_handle = 0;
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#if GST_GL_HAVE_PLATFORM_EGL
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GstGLDisplayEGL *egl_display;
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egl_display = gst_gl_display_egl_from_gl_display (gl_display);
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if (egl_display) {
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egl_handle = gst_gl_display_get_handle (GST_GL_DISPLAY (egl_display));
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gst_object_unref (egl_display);
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}
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#endif
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switch (gst_gl_context_get_gl_api (gl_context)) {
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case GST_GL_API_GLES1:
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gles_version = 1;
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goto create_egl_display;
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case GST_GL_API_GLES2:
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gles_version = 2;
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goto create_egl_display;
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case GST_GL_API_OPENGL:
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case GST_GL_API_OPENGL3:
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gles_version = 0;
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create_egl_display:
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if (egl_handle != 0) {
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out_display =
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gst_vaapi_display_egl_new_with_native_display
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(GSIZE_TO_POINTER (egl_handle), display_type, gles_version);
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} else if (display) {
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out_display = gst_vaapi_display_egl_new (display, gles_version);
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}
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break;
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default:
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out_display = NULL;
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break;
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}
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if (!out_display)
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goto bail;
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gst_vaapi_display_egl_set_gl_context (GST_VAAPI_DISPLAY_EGL (out_display),
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GSIZE_TO_POINTER (gst_gl_context_get_gl_context (gl_context)));
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break;
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}
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#endif
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default:
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out_display = gst_vaapi_display_ref (display);
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break;
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if (gl_platform == GST_GL_PLATFORM_EGL) {
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display = gst_vaapi_create_display_from_egl (gl_display, gl_context,
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display_type, native_display);
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}
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bail:
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if (display)
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gst_vaapi_display_unref (display);
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/* Non-EGL and fallback */
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if (!display) {
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display =
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gst_vaapi_create_display_from_handle (display_type, native_display);
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}
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if (gl_display)
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gst_object_unref (gl_display);
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return out_display;
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gst_object_unref (gl_display);
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return display;
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#endif
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GST_ERROR ("unsupported GStreamer version %s", GST_API_VERSION_S);
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GST_ERROR ("No GstGL support");
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return NULL;
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}
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