[WIP] obs-browser: GPU-process-loss resilience + OnAcceleratedPaint teardown guard

.gitmodules

@@ -13,7 +13,7 @@
 [submodule "plugins/obs-ndi"]
 	path = plugins/obs-ndi
 	url = https://github.com/streamlabs/obs-ndi.git
-	branch = streamlabs-obs
+	branch = streamlabs
 [submodule "plugins/slobs-virtual-cam"]
 	path = plugins/slobs-virtual-cam
 	url = https://github.com/streamlabs/slobs-virtual-cam.git

libobs-winrt/winrt-capture.cpp

@@ -301,13 +301,22 @@ static void winrt_capture_device_loss_rebuild(void *device_void, void *data)
 		return;
 
 	ID3D11Device *const d3d_device = (ID3D11Device *)device_void;
+	if (!d3d_device || FAILED(d3d_device->GetDeviceRemovedReason())) {
+		blog(LOG_WARNING, "Skipping WinRT capture rebuild; graphics device unavailable or removed");
+		return;
+	}
+
 	ComPtr<IDXGIDevice> dxgi_device;
-	if (FAILED(d3d_device->QueryInterface(&dxgi_device)))
+	if (FAILED(d3d_device->QueryInterface(&dxgi_device))) {
 		blog(LOG_ERROR, "Failed to get DXGI device");
+		return;
+	}
 
 	winrt::com_ptr<IInspectable> inspectable;
-	if (FAILED(CreateDirect3D11DeviceFromDXGIDevice(dxgi_device.Get(), inspectable.put())))
+	if (FAILED(CreateDirect3D11DeviceFromDXGIDevice(dxgi_device.Get(), inspectable.put()))) {
 		blog(LOG_ERROR, "Failed to get WinRT device");
+		return;
+	}
 
 	const winrt::Windows::Graphics::DirectX::Direct3D11::IDirect3DDevice device =
 		inspectable.as<winrt::Windows::Graphics::DirectX::Direct3D11::IDirect3DDevice>();
@@ -349,6 +358,11 @@ static struct winrt_capture *winrt_capture_init_internal(BOOL cursor, HWND windo
 							 HMONITOR monitor)
 try {
 	ID3D11Device *const d3d_device = (ID3D11Device *)gs_get_device_obj();
+	if (!d3d_device || FAILED(d3d_device->GetDeviceRemovedReason())) {
+		blog(LOG_WARNING, "Skipping WinRT capture init; graphics device unavailable or removed");
+		return nullptr;
+	}
+
 	ComPtr<IDXGIDevice> dxgi_device;
 
 	HRESULT hr = d3d_device->QueryInterface(&dxgi_device);

libobs/obs-audio-controls.c

@@ -418,7 +418,7 @@ static void volmeter_process_peak(obs_volmeter_t *volmeter, const struct audio_d
 {
 	int nr_samples = data->frames;
 	int channel_nr = 0;
-	for (int plane_nr = 0; channel_nr < nr_channels; plane_nr++) {
+	for (int plane_nr = 0; channel_nr < nr_channels && plane_nr < MAX_AV_PLANES; plane_nr++) {
 		float *samples = (float *)data->data[plane_nr];
 		if (!samples) {
 			continue;
@@ -466,7 +466,7 @@ static void volmeter_process_magnitude(obs_volmeter_t *volmeter, const struct au
 	size_t nr_samples = data->frames;
 
 	int channel_nr = 0;
-	for (int plane_nr = 0; channel_nr < nr_channels; plane_nr++) {
+	for (int plane_nr = 0; channel_nr < nr_channels && plane_nr < MAX_AV_PLANES; plane_nr++) {
 		float *samples = (float *)data->data[plane_nr];
 		if (!samples) {
 			continue;

libobs/obs-canvas.c

@@ -228,6 +228,9 @@ void obs_canvas_destroy(obs_canvas_t *canvas)
 
 	pthread_mutex_destroy(&canvas->sources_mutex);
 	obs_context_data_free(&canvas->context);
+
+	/* Null mixes referencing this view before freeing it; audio_callback() reads it via mix->view. */
+	obs_view_remove(&canvas->view);
 	obs_view_free(&canvas->view);
 	bfree(canvas);
 }

libobs/obs-internal.h

@@ -113,6 +113,8 @@ struct obs_module {
 	char *data_path;
 	void *module;
 	bool loaded;
+	char *load_error_code;
+	char *load_error_message;
 
 	bool (*load)(void);
 	void (*unload)(void);

libobs/obs-module.c

@@ -156,6 +156,18 @@ int obs_open_module(obs_module_t **module, const char *path, const char *data_pa
 	return MODULE_SUCCESS;
 }
 
+static void clear_module_load_error(obs_module_t *module)
+{
+	if (!module)
+		return;
+
+	bfree(module->load_error_code);
+	module->load_error_code = NULL;
+
+	bfree(module->load_error_message);
+	module->load_error_message = NULL;
+}
+
 bool obs_init_module(obs_module_t *module)
 {
 	if (!module || !obs)
@@ -167,14 +179,34 @@ bool obs_init_module(obs_module_t *module)
 		profile_store_name(obs_get_profiler_name_store(), "obs_init_module(%s)", module->file);
 	profile_start(profile_name);
 
+	clear_module_load_error(module);
 	module->loaded = module->load();
-	if (!module->loaded)
-		blog(LOG_WARNING, "Failed to initialize module '%s'", module->file);
+	if (!module->loaded) {
+		if (module->load_error_code && module->load_error_message) {
+			blog(LOG_WARNING, "Failed to initialize module '%s': %s (%s)", module->file,
+			     module->load_error_message, module->load_error_code);
+		} else if (module->load_error_code) {
+			blog(LOG_WARNING, "Failed to initialize module '%s': %s", module->file,
+			     module->load_error_code);
+		} else {
+			blog(LOG_WARNING, "Failed to initialize module '%s'", module->file);
+		}
+	}
 
 	profile_end(profile_name);
 	return module->loaded;
 }
 
+void obs_module_set_load_error(obs_module_t *module, const char *code, const char *message)
+{
+	if (!module)
+		return;
+
+	clear_module_load_error(module);
+	module->load_error_code = bstrdup(code ? code : "");
+	module->load_error_message = bstrdup(message ? message : "");
+}
+
 void obs_log_loaded_modules(void)
 {
 	blog(LOG_INFO, "  Loaded Modules:");
@@ -294,9 +326,25 @@ extern void get_plugin_info(const char *path, bool *is_obs_plugin, bool *can_loa
 
 struct fail_info {
 	struct dstr fail_modules;
-	size_t fail_count;
+	DARRAY(struct obs_module_load_failure) failures;
 };
 
+static void add_module_failure(struct fail_info *fail_info, const char *module, const char *code, const char *message)
+{
+	if (!fail_info)
+		return;
+
+	struct obs_module_load_failure failure = {
+		bstrdup(module ? module : ""),
+		bstrdup((code && *code) ? code : "MODULE_LOAD_FAILED"),
+		bstrdup((message && *message) ? message : "Module failed to load."),
+	};
+
+	dstr_cat(&fail_info->fail_modules, failure.module);
+	dstr_cat(&fail_info->fail_modules, ";");
+	da_push_back(fail_info->failures, &failure);
+}
+
 static bool is_safe_module(const char *name)
 {
 	if (!obs->safe_modules.num)
@@ -356,18 +404,16 @@ static void load_all_callback(void *param, const struct obs_module_info2 *info)
 		return;
 	}
 
-	if (!obs_init_module(module))
+	if (!obs_init_module(module)) {
+		add_module_failure(fail_info, info->name, module->load_error_code, module->load_error_message);
 		free_module(module);
+	}
 
 	UNUSED_PARAMETER(param);
 	return;
 
 load_failure:
-	if (fail_info) {
-		dstr_cat(&fail_info->fail_modules, info->name);
-		dstr_cat(&fail_info->fail_modules, ";");
-		fail_info->fail_count++;
-	}
+	add_module_failure(fail_info, info->name, NULL, NULL);
 }
 
 static const char *obs_load_all_modules_name = "obs_load_all_modules";
@@ -403,7 +449,8 @@ void obs_load_all_modules2(struct obs_module_failure_info *mfi)
 #endif
 	profile_end(obs_load_all_modules2_name);
 
-	mfi->count = fail_info.fail_count;
+	mfi->count = fail_info.failures.num;
+	mfi->failures = fail_info.failures.array;
 	mfi->failed_modules = strlist_split(fail_info.fail_modules.array, ';', false);
 	dstr_free(&fail_info.fail_modules);
 }
@@ -414,6 +461,19 @@ void obs_module_failure_info_free(struct obs_module_failure_info *mfi)
 		bfree(mfi->failed_modules);
 		mfi->failed_modules = NULL;
 	}
+
+	if (mfi->failures) {
+		for (size_t i = 0; i < mfi->count; i++) {
+			bfree(mfi->failures[i].module);
+			bfree(mfi->failures[i].code);
+			bfree(mfi->failures[i].message);
+		}
+
+		bfree(mfi->failures);
+		mfi->failures = NULL;
+	}
+
+	mfi->count = 0;
 }
 
 void obs_post_load_modules(void)
@@ -621,6 +681,8 @@ void free_module(struct obs_module *mod)
 	bfree(mod->mod_name);
 	bfree(mod->bin_path);
 	bfree(mod->data_path);
+	bfree(mod->load_error_code);
+	bfree(mod->load_error_message);
 	bfree(mod);
 }
 

libobs/obs-scene.c

@@ -2111,9 +2111,12 @@ static bool scene_audio_render_do(void *data, uint64_t *ts_out,
 				for (size_t canvas_idx = 0;
 				     canvas_idx < audio_output->outputs.num;
 				     canvas_idx++) {
-					if (item->canvas !=
-					    obs->video.canvases
-						    .array[canvas_idx]) {
+					/* NULL canvas = all canvases, as in
+					 * scene_video_render */
+					if (item->canvas &&
+					    item->canvas !=
+						    obs->video.canvases
+							    .array[canvas_idx]) {
 						continue;
 					}
 

libobs/obs-source.h

@@ -301,12 +301,6 @@ struct obs_source_info {
 	/** Called when the source has been activated in the main view */
 	void (*activate)(void *data);
 
-	/** Called to send message to the source */
-	void (*message)(void *data, obs_data_t *settings);
-
-	/** Called to get messages from the source */
-	obs_data_array_t *(*get_messages)(void *data);
-
 	/**
 	 * Called when the source has been deactivated from the main view
 	 * (no longer being played/displayed)
@@ -562,6 +556,14 @@ struct obs_source_info {
 	 * @param  source  Source that the filter is being added to
 	 */
 	void (*filter_add)(void *data, obs_source_t *source);
+
+	/* Append-only: mid-struct inserts shift later offsets and break module ABI. */
+
+	/** Called to send message to the source */
+	void (*message)(void *data, obs_data_t *settings);
+
+	/** Called to get messages from the source */
+	obs_data_array_t *(*get_messages)(void *data);
 };
 
 EXPORT void obs_register_source_s(const struct obs_source_info *info, size_t size);

libobs/obs.h

@@ -589,13 +589,21 @@ EXPORT void obs_add_safe_module(const char *name);
 /** Automatically loads all modules from module paths (convenience function) */
 EXPORT void obs_load_all_modules(void);
 
+struct obs_module_load_failure {
+	char *module;
+	char *code;
+	char *message;
+};
+
 struct obs_module_failure_info {
 	char **failed_modules;
 	size_t count;
+	struct obs_module_load_failure *failures;
 };
 
 EXPORT void obs_module_failure_info_free(struct obs_module_failure_info *mfi);
 EXPORT void obs_load_all_modules2(struct obs_module_failure_info *mfi);
+EXPORT void obs_module_set_load_error(obs_module_t *module, const char *code, const char *message);
 
 /** Notifies modules that all modules have been loaded.  This function should
  * be called after all modules have been loaded. */