/** * gst_gl_context_fill_info: * @context: a #GstGLContext: * * Fills @context's info (version, extensions, vtable, etc) from the GL * context in the current thread. Typically used with wrapped contexts to * allow wrapped contexts to be used as regular #GstGLContext's. * * Since: 1.6 */ gboolean gst_gl_context_fill_info (GstGLContext * context, GError ** error) { GstGLFuncs *gl; GString *ext_g_str = NULL; const gchar *ext_const_c_str = NULL; GstGLAPI gl_api; gboolean ret; g_return_val_if_fail (GST_IS_GL_CONTEXT (context), FALSE); g_return_val_if_fail (context->priv->active_thread == g_thread_self (), FALSE); gl = context->gl_vtable; gl_api = gst_gl_context_get_gl_api (context); gl->GetError = gst_gl_context_get_proc_address (context, "glGetError"); gl->GetString = gst_gl_context_get_proc_address (context, "glGetString"); gl->GetStringi = gst_gl_context_get_proc_address (context, "glGetStringi"); gl->GetIntegerv = gst_gl_context_get_proc_address (context, "glGetIntegerv"); if (!gl->GetError || !gl->GetString) { g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED, "could not GetProcAddress core opengl functions"); goto failure; } /* gl api specific code */ ret = _create_context_info (context, gl_api, &context->priv->gl_major, &context->priv->gl_minor, error); if (!ret) { g_assert (error == NULL || *error != NULL); goto failure; } /* GL core contexts and GLES3 */ if (gl->GetIntegerv && gl->GetStringi && context->priv->gl_major >= 3) ext_g_str = _build_extension_string (context); if (ext_g_str && ext_g_str->len) { GST_DEBUG_OBJECT (context, "GL_EXTENSIONS: %s", ext_g_str->str); _gst_gl_feature_check_ext_functions (context, context->priv->gl_major, context->priv->gl_minor, ext_g_str->str); context->priv->gl_exts = g_string_free (ext_g_str, FALSE); } else { ext_const_c_str = (const gchar *) gl->GetString (GL_EXTENSIONS); if (!ext_const_c_str) ext_const_c_str = ""; GST_DEBUG_OBJECT (context, "GL_EXTENSIONS: %s", ext_const_c_str); _gst_gl_feature_check_ext_functions (context, context->priv->gl_major, context->priv->gl_minor, ext_const_c_str); context->priv->gl_exts = g_strdup (ext_const_c_str); } if (gl_api & GST_GL_API_OPENGL3 && !gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 4, 1) && !gst_gl_check_extension ("GL_ARB_ES2_compatibility", context->priv->gl_exts)) { g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED, "An opengl3 context created but the required ES2 compatibility was not found"); goto failure; } /* Does not implement OES_vertex_array_object properly, see * https://bugzilla.gnome.org/show_bug.cgi?id=750185 */ if (g_strcmp0 ((const gchar *) gl->GetString (GL_VENDOR), "Imagination Technologies") == 0 && g_strcmp0 ((const gchar *) gl->GetString (GL_RENDERER), "PowerVR SGX 544MP") == 0) { gl->GenVertexArrays = NULL; gl->DeleteVertexArrays = NULL; gl->BindVertexArray = NULL; gl->IsVertexArray = NULL; } return TRUE; failure: return FALSE; }
//gboolean //gst_gl_context_create (GstGLContext * context, GstGLContext * other_context, GError ** error) static gpointer gst_gl_context_create_thread (GstGLContext * context) { GstGLContextClass *context_class; GstGLWindowClass *window_class; GstGLFuncs *gl; gboolean ret = FALSE; GstGLAPI compiled_api, user_api, gl_api; gchar *api_string; gchar *compiled_api_s; gchar *user_api_string; const gchar *user_choice; GError **error; GstGLContext *other_context; GString *ext_g_str = NULL; const gchar *ext_const_c_str = NULL; g_mutex_lock (&context->priv->render_lock); error = context->priv->error; other_context = context->priv->other_context; context_class = GST_GL_CONTEXT_GET_CLASS (context); window_class = GST_GL_WINDOW_GET_CLASS (context->window); if (window_class->open) { if (!window_class->open (context->window, error)) { g_assert (error == NULL || *error != NULL); goto failure; } } gl = context->gl_vtable; compiled_api = _compiled_api (); user_choice = g_getenv ("GST_GL_API"); user_api = gst_gl_api_from_string (user_choice); user_api_string = gst_gl_api_to_string (user_api); compiled_api_s = gst_gl_api_to_string (compiled_api); if ((user_api & compiled_api) == GST_GL_API_NONE) { g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API, "Cannot create context with the user requested api (%s). " "We have support for (%s)", user_api_string, compiled_api_s); g_free (user_api_string); g_free (compiled_api_s); goto failure; } if (context_class->choose_format && !context_class->choose_format (context, error)) { g_assert (error == NULL || *error != NULL); g_free (compiled_api_s); g_free (user_api_string); goto failure; } GST_INFO ("Attempting to create opengl context. user chosen api(s) (%s), " "compiled api support (%s)", user_api_string, compiled_api_s); if (!context_class->create_context (context, compiled_api & user_api, other_context, error)) { g_assert (error == NULL || *error != NULL); g_free (compiled_api_s); g_free (user_api_string); goto failure; } GST_INFO ("created context"); if (!context_class->activate (context, TRUE)) { g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_RESOURCE_UNAVAILABLE, "Failed to activate the GL Context"); g_free (compiled_api_s); g_free (user_api_string); goto failure; } gl_api = gst_gl_context_get_gl_api (context); g_assert (gl_api != GST_GL_API_NONE && gl_api != GST_GL_API_ANY); api_string = gst_gl_api_to_string (gl_api); GST_INFO ("available GL APIs: %s", api_string); if (((compiled_api & gl_api) & user_api) == GST_GL_API_NONE) { g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API, "failed to create context, context " "could not provide correct api. user (%s), compiled (%s), context (%s)", user_api_string, compiled_api_s, api_string); g_free (api_string); g_free (compiled_api_s); g_free (user_api_string); goto failure; } g_free (api_string); g_free (compiled_api_s); g_free (user_api_string); gl->GetError = gst_gl_context_get_proc_address (context, "glGetError"); gl->GetString = gst_gl_context_get_proc_address (context, "glGetString"); gl->GetStringi = gst_gl_context_get_proc_address (context, "glGetStringi"); gl->GetIntegerv = gst_gl_context_get_proc_address (context, "glGetIntegerv"); if (!gl->GetError || !gl->GetString) { g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED, "could not GetProcAddress core opengl functions"); goto failure; } /* gl api specific code */ ret = _create_context_info (context, gl_api, &context->priv->gl_major, &context->priv->gl_minor, error); if (!ret) { g_assert (error == NULL || *error != NULL); goto failure; } /* GL core contexts and GLES3 */ if (gl->GetIntegerv && gl->GetStringi && context->priv->gl_major >= 3) ext_g_str = _build_extension_string (context); if (ext_g_str && ext_g_str->len) { GST_DEBUG_OBJECT (context, "GL_EXTENSIONS: %s", ext_g_str->str); _gst_gl_feature_check_ext_functions (context, context->priv->gl_major, context->priv->gl_minor, ext_g_str->str); context->priv->gl_exts = g_string_free (ext_g_str, FALSE); } else { ext_const_c_str = (const gchar *) gl->GetString (GL_EXTENSIONS); if (!ext_const_c_str) ext_const_c_str = ""; GST_DEBUG_OBJECT (context, "GL_EXTENSIONS: %s", ext_const_c_str); _gst_gl_feature_check_ext_functions (context, context->priv->gl_major, context->priv->gl_minor, ext_const_c_str); context->priv->gl_exts = g_strdup (ext_const_c_str); } context->priv->alive = TRUE; g_cond_signal (&context->priv->create_cond); // g_mutex_unlock (&context->priv->render_lock); gst_gl_window_send_message_async (context->window, (GstGLWindowCB) _unlock_create_thread, context, NULL); gst_gl_window_run (context->window); GST_INFO ("loop exited\n"); g_mutex_lock (&context->priv->render_lock); context->priv->alive = FALSE; context_class->activate (context, FALSE); context_class->destroy_context (context); /* User supplied callback */ if (context->window->close) context->window->close (context->window->close_data); /* window specific shutdown */ if (window_class->close) { window_class->close (context->window); } g_cond_signal (&context->priv->destroy_cond); g_mutex_unlock (&context->priv->render_lock); return NULL; failure: { g_cond_signal (&context->priv->create_cond); g_mutex_unlock (&context->priv->render_lock); return NULL; } }
/** * gst_gl_context_fill_info: * @context: a #GstGLContext: * * Fills @context's info (version, extensions, vtable, etc) from the GL * context in the current thread. Typically used with wrapped contexts to * allow wrapped contexts to be used as regular #GstGLContext's. * * Since: 1.6 */ gboolean gst_gl_context_fill_info (GstGLContext * context, GError ** error) { GstGLFuncs *gl; GString *ext_g_str = NULL; const gchar *ext_const_c_str = NULL; GstGLAPI gl_api; gboolean ret; g_return_val_if_fail (GST_GL_IS_CONTEXT (context), FALSE); g_return_val_if_fail (context->priv->active_thread == g_thread_self (), FALSE); gl = context->gl_vtable; gl_api = gst_gl_context_get_gl_api (context); gl->GetError = gst_gl_context_get_proc_address (context, "glGetError"); gl->GetString = gst_gl_context_get_proc_address (context, "glGetString"); gl->GetStringi = gst_gl_context_get_proc_address (context, "glGetStringi"); gl->GetIntegerv = gst_gl_context_get_proc_address (context, "glGetIntegerv"); if (!gl->GetError || !gl->GetString) { g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED, "could not GetProcAddress core opengl functions"); goto failure; } /* gl api specific code */ ret = _create_context_info (context, gl_api, &context->priv->gl_major, &context->priv->gl_minor, error); if (!ret) { g_assert (error == NULL || *error != NULL); goto failure; } /* GL core contexts and GLES3 */ if (gl->GetIntegerv && gl->GetStringi && context->priv->gl_major >= 3) ext_g_str = _build_extension_string (context); if (ext_g_str && ext_g_str->len) { GST_DEBUG_OBJECT (context, "GL_EXTENSIONS: %s", ext_g_str->str); _gst_gl_feature_check_ext_functions (context, context->priv->gl_major, context->priv->gl_minor, ext_g_str->str); context->priv->gl_exts = g_string_free (ext_g_str, FALSE); } else { ext_const_c_str = (const gchar *) gl->GetString (GL_EXTENSIONS); if (!ext_const_c_str) ext_const_c_str = ""; GST_DEBUG_OBJECT (context, "GL_EXTENSIONS: %s", ext_const_c_str); _gst_gl_feature_check_ext_functions (context, context->priv->gl_major, context->priv->gl_minor, ext_const_c_str); context->priv->gl_exts = g_strdup (ext_const_c_str); } if (gl_api & GST_GL_API_OPENGL3 && !gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 4, 1) && !gst_gl_check_extension ("GL_ARB_ES2_compatibility", context->priv->gl_exts)) { g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_FAILED, "An opengl3 context created but the required ES2 compatibility was not found"); goto failure; } return TRUE; failure: return FALSE; }