static gboolean gst_gl_mixer_decide_allocation (GstGLMixer * mix, GstQuery * query) { GstGLMixerClass *mixer_class = GST_GL_MIXER_GET_CLASS (mix); GstBufferPool *pool = NULL; GstStructure *config; GstCaps *caps; guint min, max, size; gboolean update_pool; GError *error = NULL; guint idx; guint out_width, out_height; GstGLContext *other_context = NULL; GstVideoAggregator *vagg = GST_VIDEO_AGGREGATOR (mix); gst_query_parse_allocation (query, &caps, NULL); if (gst_query_get_n_allocation_pools (query) > 0) { gst_query_parse_nth_allocation_pool (query, 0, &pool, &size, &min, &max); update_pool = TRUE; } else { GstVideoInfo vinfo; gst_video_info_init (&vinfo); gst_video_info_from_caps (&vinfo, caps); size = vinfo.size; min = max = 0; update_pool = FALSE; } if (!gst_gl_ensure_display (mix, &mix->display)) return FALSE; if (gst_query_find_allocation_meta (query, GST_VIDEO_GL_TEXTURE_UPLOAD_META_API_TYPE, &idx)) { GstGLContext *context; const GstStructure *upload_meta_params; gpointer handle; gchar *type; gchar *apis; gst_query_parse_nth_allocation_meta (query, idx, &upload_meta_params); if (upload_meta_params) { if (gst_structure_get (upload_meta_params, "gst.gl.GstGLContext", GST_GL_TYPE_CONTEXT, &context, NULL) && context) { GstGLContext *old = mix->context; mix->context = context; if (old) gst_object_unref (old); } else if (gst_structure_get (upload_meta_params, "gst.gl.context.handle", G_TYPE_POINTER, &handle, "gst.gl.context.type", G_TYPE_STRING, &type, "gst.gl.context.apis", G_TYPE_STRING, &apis, NULL) && handle) { GstGLPlatform platform = GST_GL_PLATFORM_NONE; GstGLAPI gl_apis; GST_DEBUG ("got GL context handle 0x%p with type %s and apis %s", handle, type, apis); platform = gst_gl_platform_from_string (type); gl_apis = gst_gl_api_from_string (apis); if (gl_apis && platform) other_context = gst_gl_context_new_wrapped (mix->display, (guintptr) handle, platform, gl_apis); } } } if (!mix->context) { mix->context = gst_gl_context_new (mix->display); if (!gst_gl_context_create (mix->context, other_context, &error)) goto context_error; } out_width = GST_VIDEO_INFO_WIDTH (&vagg->info); out_height = GST_VIDEO_INFO_HEIGHT (&vagg->info); g_mutex_lock (&mix->priv->gl_resource_lock); mix->priv->gl_resource_ready = FALSE; if (mix->fbo) { gst_gl_context_del_fbo (mix->context, mix->fbo, mix->depthbuffer); mix->fbo = 0; mix->depthbuffer = 0; } if (!gst_gl_context_gen_fbo (mix->context, out_width, out_height, &mix->fbo, &mix->depthbuffer)) { g_cond_signal (&mix->priv->gl_resource_cond); g_mutex_unlock (&mix->priv->gl_resource_lock); goto context_error; } if (mix->out_tex_id) gst_gl_context_del_texture (mix->context, &mix->out_tex_id); gst_gl_context_gen_texture (mix->context, &mix->out_tex_id, GST_VIDEO_FORMAT_RGBA, out_width, out_height); if (mixer_class->set_caps) mixer_class->set_caps (mix, caps); mix->priv->gl_resource_ready = TRUE; g_cond_signal (&mix->priv->gl_resource_cond); g_mutex_unlock (&mix->priv->gl_resource_lock); if (!pool) pool = gst_gl_buffer_pool_new (mix->context); config = gst_buffer_pool_get_config (pool); gst_buffer_pool_config_set_params (config, caps, size, min, max); gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META); gst_buffer_pool_set_config (pool, config); if (update_pool) gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max); else gst_query_add_allocation_pool (query, pool, size, min, max); gst_object_unref (pool); return TRUE; context_error: { GST_ELEMENT_ERROR (mix, RESOURCE, NOT_FOUND, ("%s", error->message), (NULL)); 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; } }
//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; GstGLAPI compiled_api, user_api, gl_api, display_api; gchar *api_string; gchar *compiled_api_s; gchar *user_api_s; gchar *display_api_s; const gchar *user_choice; GError **error; GstGLContext *other_context; g_mutex_lock (&context->priv->render_lock); GST_DEBUG_OBJECT (context, "Creating thread"); error = context->priv->error; other_context = g_weak_ref_get (&context->priv->other_context_ref); context_class = GST_GL_CONTEXT_GET_CLASS (context); window_class = GST_GL_WINDOW_GET_CLASS (context->window); display_api = gst_gl_display_get_gl_api_unlocked (context->display); if (display_api == GST_GL_API_NONE) { g_set_error (error, GST_GL_CONTEXT_ERROR, GST_GL_CONTEXT_ERROR_WRONG_API, "Cannot create context with satisfying requested apis " "(display has no GL api!)"); goto failure; } if (window_class->open) { if (!window_class->open (context->window, error)) { GST_WARNING_OBJECT (context, "Failed to open window"); g_assert (error == NULL || *error != NULL); goto failure; } } gl = context->gl_vtable; compiled_api = _compiled_api (); compiled_api_s = gst_gl_api_to_string (compiled_api); user_choice = g_getenv ("GST_GL_API"); user_api = gst_gl_api_from_string (user_choice); user_api_s = gst_gl_api_to_string (user_api); display_api_s = gst_gl_api_to_string (display_api); if ((user_api & compiled_api & display_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), display api (%s)", user_api_s, compiled_api_s, display_api_s); g_free (user_api_s); g_free (compiled_api_s); g_free (display_api_s); goto failure; } if (context_class->choose_format && !context_class->choose_format (context, error)) { GST_WARNING_OBJECT (context, "Failed to choose format"); g_assert (error == NULL || *error != NULL); g_free (compiled_api_s); g_free (user_api_s); g_free (display_api_s); goto failure; } GST_INFO_OBJECT (context, "Attempting to create opengl context. user chosen api(s) (%s), " "compiled api support (%s) display api (%s)", user_api_s, compiled_api_s, display_api_s); if (!context_class->create_context (context, compiled_api & user_api & display_api, other_context, error)) { GST_WARNING_OBJECT (context, "Failed to create context"); g_assert (error == NULL || *error != NULL); g_free (compiled_api_s); g_free (user_api_s); g_free (display_api_s); goto failure; } GST_INFO_OBJECT (context, "created context"); if (!gst_gl_context_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_s); g_free (display_api_s); 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_OBJECT (context, "available GL APIs: %s", api_string); if (((compiled_api & gl_api & display_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_s, compiled_api_s, api_string); g_free (api_string); g_free (compiled_api_s); g_free (user_api_s); g_free (display_api_s); goto failure; } g_free (api_string); g_free (compiled_api_s); g_free (user_api_s); g_free (display_api_s); GST_DEBUG_OBJECT (context, "Filling info"); if (!gst_gl_context_fill_info (context, error)) { g_assert (error == NULL || *error != NULL); goto failure; } context->priv->alive = TRUE; if (gl->DebugMessageCallback) { #if !defined(GST_DISABLE_GST_DEBUG) GST_INFO_OBJECT (context, "Enabling GL context debugging"); /* enable them all */ gl->DebugMessageControl (GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, 0, GL_TRUE); gl->DebugMessageCallback (_gst_gl_debug_callback, context); #endif } if (other_context) { GST_DEBUG_OBJECT (context, "Unreffing other_context %" GST_PTR_FORMAT, other_context); gst_object_unref (other_context); } 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_OBJECT (context, "loop exited"); g_mutex_lock (&context->priv->render_lock); context->priv->alive = FALSE; gst_gl_context_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: { if (other_context) gst_object_unref (other_context); g_cond_signal (&context->priv->create_cond); g_mutex_unlock (&context->priv->render_lock); return NULL; } }