Adding upstream version 0.3.65.upstream/0.3.65upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 724 insertions, 0 deletions

diff --git a/spa/tools/meson.build b/spa/tools/meson.build
new file mode 100644
index 0000000..6f12e9c
--- /dev/null
+++ b/spa/tools/meson.build
@@ -0,0 +1,11 @@
+executable('spa-inspect', 'spa-inspect.c',
+           dependencies : [ spa_dep, dl_lib ],
+           install : true)
+
+executable('spa-monitor', 'spa-monitor.c',
+           dependencies : [ spa_dep, dl_lib ],
+           install : true)
+
+executable('spa-json-dump', 'spa-json-dump.c',
+           dependencies : [ spa_dep, dl_lib, ],
+           install : true)
diff --git a/spa/tools/spa-inspect.c b/spa/tools/spa-inspect.c
new file mode 100644
index 0000000..4e79104
--- /dev/null
+++ b/spa/tools/spa-inspect.c
@@ -0,0 +1,319 @@
+/* Simple Plugin API
+ *
+ * Copyright © 2018 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <dlfcn.h>
+
+#include <spa/support/plugin.h>
+#include <spa/support/log-impl.h>
+#include <spa/support/loop.h>
+#include <spa/utils/result.h>
+#include <spa/utils/string.h>
+#include <spa/node/node.h>
+#include <spa/node/utils.h>
+#include <spa/pod/parser.h>
+#include <spa/param/param.h>
+#include <spa/param/format.h>
+#include <spa/debug/dict.h>
+#include <spa/debug/pod.h>
+#include <spa/debug/format.h>
+#include <spa/debug/types.h>
+
+static SPA_LOG_IMPL(default_log);
+
+struct data {
+	struct spa_support support[4];
+	uint32_t n_support;
+	struct spa_log *log;
+	struct spa_loop loop;
+	struct spa_node *node;
+	struct spa_hook listener;
+};
+
+static void print_param(void *data, int seq, int res, uint32_t type, const void *result)
+{
+	switch (type) {
+	case SPA_RESULT_TYPE_NODE_PARAMS:
+	{
+		const struct spa_result_node_params *r = result;
+
+		if (spa_pod_is_object_type(r->param, SPA_TYPE_OBJECT_Format))
+			spa_debug_format(16, NULL, r->param);
+		else
+			spa_debug_pod(16, NULL, r->param);
+		break;
+	}
+	default:
+		break;
+	}
+}
+
+static void
+inspect_node_params(struct data *data, struct spa_node *node,
+		uint32_t n_params, struct spa_param_info *params)
+{
+	int res;
+	uint32_t i;
+	struct spa_hook listener;
+	static const struct spa_node_events node_events = {
+		SPA_VERSION_NODE_EVENTS,
+		.result = print_param,
+	};
+
+	for (i = 0; i < n_params; i++) {
+		printf("enumerating: %s:\n", spa_debug_type_find_name(spa_type_param, params[i].id));
+
+		if (!SPA_FLAG_IS_SET(params[i].flags, SPA_PARAM_INFO_READ))
+			continue;
+
+		spa_zero(listener);
+		spa_node_add_listener(node, &listener, &node_events, data);
+		res = spa_node_enum_params(node, 0, params[i].id, 0, UINT32_MAX, NULL);
+		spa_hook_remove(&listener);
+
+		if (res != 0) {
+			printf("error enum_params %d: %s", params[i].id, spa_strerror(res));
+			break;
+		}
+	}
+}
+
+static void
+inspect_port_params(struct data *data, struct spa_node *node,
+		    enum spa_direction direction, uint32_t port_id,
+		    uint32_t n_params, struct spa_param_info *params)
+{
+	int res;
+	uint32_t i;
+	struct spa_hook listener;
+	static const struct spa_node_events node_events = {
+		SPA_VERSION_NODE_EVENTS,
+		.result = print_param,
+	};
+
+	for (i = 0; i < n_params; i++) {
+		printf("param: %s: flags %c%c\n",
+				spa_debug_type_find_name(spa_type_param, params[i].id),
+				params[i].flags & SPA_PARAM_INFO_READ ? 'r' : '-',
+				params[i].flags & SPA_PARAM_INFO_WRITE ? 'w' : '-');
+
+		if (!SPA_FLAG_IS_SET(params[i].flags, SPA_PARAM_INFO_READ))
+			continue;
+
+		printf("values:\n");
+		spa_zero(listener);
+		spa_node_add_listener(node, &listener, &node_events, data);
+		res = spa_node_port_enum_params(node, 0,
+				direction, port_id,
+				params[i].id, 0, UINT32_MAX,
+				NULL);
+		spa_hook_remove(&listener);
+
+		if (res != 0) {
+			printf("error port_enum_params %d: %s", params[i].id, spa_strerror(res));
+			break;
+		}
+	}
+}
+
+static void node_info(void *_data, const struct spa_node_info *info)
+{
+	struct data *data = _data;
+
+	printf("node info: %08"PRIx64"\n", info->change_mask);
+	printf("max input ports: %u\n", info->max_input_ports);
+	printf("max output ports: %u\n", info->max_output_ports);
+
+	if (info->change_mask & SPA_NODE_CHANGE_MASK_PROPS) {
+		printf("node properties:\n");
+		spa_debug_dict(2, info->props);
+	}
+	if (info->change_mask & SPA_NODE_CHANGE_MASK_PARAMS) {
+		inspect_node_params(data, data->node, info->n_params, info->params);
+	}
+}
+
+static void node_port_info(void *_data, enum spa_direction direction, uint32_t id,
+		const struct spa_port_info *info)
+{
+	struct data *data = _data;
+
+	printf(" %s port: %08x",
+		direction == SPA_DIRECTION_INPUT ? "input" : "output",
+		id);
+
+	if (info == NULL) {
+		printf(" removed\n");
+	}
+	else {
+		printf(" info:\n");
+		if (info->change_mask & SPA_PORT_CHANGE_MASK_PROPS) {
+			printf("port properties:\n");
+			spa_debug_dict(2, info->props);
+		}
+		if (info->change_mask & SPA_PORT_CHANGE_MASK_PARAMS) {
+			inspect_port_params(data, data->node, direction, id,
+					info->n_params, info->params);
+		}
+	}
+}
+
+static const struct spa_node_events node_events =
+{
+	SPA_VERSION_NODE_EVENTS,
+	.info = node_info,
+	.port_info = node_port_info,
+};
+
+static void inspect_node(struct data *data, struct spa_node *node)
+{
+	data->node = node;
+	spa_node_add_listener(node, &data->listener, &node_events, data);
+	spa_hook_remove(&data->listener);
+}
+
+static void inspect_factory(struct data *data, const struct spa_handle_factory *factory)
+{
+	int res;
+	struct spa_handle *handle;
+	void *interface;
+	const struct spa_interface_info *info;
+	uint32_t index;
+
+	printf("factory version:\t\t%d\n", factory->version);
+	printf("factory name:\t\t'%s'\n", factory->name);
+	if (factory->version < 1) {
+		printf("\tno further info for version %d < 1\n", factory->version);
+		return;
+	}
+
+	printf("factory info:\n");
+	if (factory->info)
+		spa_debug_dict(2, factory->info);
+	else
+		printf("  none\n");
+
+	printf("factory interfaces:\n");
+	for (index = 0;;) {
+		if ((res = spa_handle_factory_enum_interface_info(factory, &info, &index)) <= 0) {
+			if (res != 0)
+				printf("error spa_handle_factory_enum_interface_info: %s",
+						 spa_strerror(res));
+			break;
+		}
+		printf(" interface: '%s'\n", info->type);
+	}
+
+	handle = calloc(1, spa_handle_factory_get_size(factory, NULL));
+	if ((res =
+	     spa_handle_factory_init(factory, handle, NULL, data->support, data->n_support)) < 0) {
+		printf("can't make factory instance: %d\n", res);
+		goto out;
+	}
+
+	printf("factory instance:\n");
+
+	for (index = 0;;) {
+		if ((res = spa_handle_factory_enum_interface_info(factory, &info, &index)) <= 0) {
+			if (res != 0)
+				printf("error spa_handle_factory_enum_interface_info: %s",
+						 spa_strerror(res));
+			break;
+		}
+		printf(" interface: '%s'\n", info->type);
+
+		if ((res = spa_handle_get_interface(handle, info->type, &interface)) < 0) {
+			printf("can't get interface: %s: %d\n", info->type, res);
+			continue;
+		}
+
+		if (spa_streq(info->type, SPA_TYPE_INTERFACE_Node))
+			inspect_node(data, interface);
+		else
+			printf("skipping unknown interface\n");
+	}
+
+	if ((res = spa_handle_clear(handle)) < 0)
+		printf("failed to clear handle: %s\n", spa_strerror(res));
+
+out:
+	free(handle);
+}
+
+static const struct spa_loop_methods impl_loop = {
+	SPA_VERSION_LOOP_METHODS,
+};
+
+int main(int argc, char *argv[])
+{
+	struct data data = { 0 };
+	int res;
+	void *handle;
+	spa_handle_factory_enum_func_t enum_func;
+	uint32_t index;
+	const char *str;
+
+	if (argc < 2) {
+		printf("usage: %s <plugin.so>\n", argv[0]);
+		return -1;
+	}
+
+	data.log = &default_log.log;
+	data.loop.iface = SPA_INTERFACE_INIT(
+			SPA_TYPE_INTERFACE_Loop,
+			SPA_VERSION_LOOP,
+			&impl_loop, &data);
+
+	if ((str = getenv("SPA_DEBUG")))
+		data.log->level = atoi(str);
+
+	data.support[0] = SPA_SUPPORT_INIT(SPA_TYPE_INTERFACE_Log, data.log);
+	data.support[1] = SPA_SUPPORT_INIT(SPA_TYPE_INTERFACE_Loop, &data.loop);
+	data.support[2] = SPA_SUPPORT_INIT(SPA_TYPE_INTERFACE_DataLoop, &data.loop);
+	data.n_support = 3;
+
+	if ((handle = dlopen(argv[1], RTLD_NOW)) == NULL) {
+		printf("can't load %s\n", argv[1]);
+		return -1;
+	}
+	if ((enum_func = dlsym(handle, SPA_HANDLE_FACTORY_ENUM_FUNC_NAME)) == NULL) {
+		printf("can't find function\n");
+		return -1;
+	}
+
+	for (index = 0;;) {
+		const struct spa_handle_factory *factory;
+
+		if ((res = enum_func(&factory, &index)) <= 0) {
+			if (res != 0)
+				printf("error enum_func: %s", spa_strerror(res));
+			break;
+		}
+		inspect_factory(&data, factory);
+	}
+	return 0;
+}
diff --git a/spa/tools/spa-json-dump.c b/spa/tools/spa-json-dump.c
new file mode 100644
index 0000000..ae0c67d
--- /dev/null
+++ b/spa/tools/spa-json-dump.c
@@ -0,0 +1,165 @@
+/* Simple Plugin API
+ *
+ * Copyright © 2021 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <spa/utils/result.h>
+#include <spa/utils/json.h>
+
+static void encode_string(FILE *f, const char *val, int len)
+{
+	int i;
+	fprintf(f, "\"");
+	for (i = 0; i < len; i++) {
+		char v = val[i];
+		switch (v) {
+		case '\n':
+			fprintf(f, "\\n");
+			break;
+		case '\r':
+			fprintf(f, "\\r");
+			break;
+		case '\b':
+			fprintf(f, "\\b");
+			break;
+		case '\t':
+			fprintf(f, "\\t");
+			break;
+		case '\f':
+			fprintf(f, "\\f");
+			break;
+		case '\\': case '"':
+			fprintf(f, "\\%c", v);
+			break;
+		default:
+			if (v > 0 && v < 0x20)
+				fprintf(f, "\\u%04x", v);
+			else
+				fprintf(f, "%c", v);
+			break;
+		}
+	}
+	fprintf(f, "\"");
+}
+
+static int dump(FILE *file, int indent, struct spa_json *it, const char *value, int len)
+{
+	struct spa_json sub;
+	int count = 0;
+	char key[1024];
+
+	if (spa_json_is_array(value, len)) {
+		fprintf(file, "[");
+		spa_json_enter(it, &sub);
+		while ((len = spa_json_next(&sub, &value)) > 0) {
+			fprintf(file, "%s\n%*s", count++ > 0 ? "," : "",
+					indent+2, "");
+			dump(file, indent+2, &sub, value, len);
+		}
+		fprintf(file, "%s%*s]", count > 0 ? "\n" : "",
+				count > 0 ? indent : 0, "");
+	} else if (spa_json_is_object(value, len)) {
+		fprintf(file, "{");
+		spa_json_enter(it, &sub);
+		while (spa_json_get_string(&sub, key, sizeof(key)) > 0) {
+			fprintf(file, "%s\n%*s",
+					count++ > 0 ? "," : "",
+					indent+2, "");
+			encode_string(file, key, strlen(key));
+			fprintf(file, ": ");
+			if ((len = spa_json_next(&sub, &value)) <= 0)
+				break;
+			dump(file, indent+2, &sub, value, len);
+		}
+		fprintf(file, "%s%*s}", count > 0 ? "\n" : "",
+				count > 0 ? indent : 0, "");
+	} else if (spa_json_is_string(value, len) ||
+	    spa_json_is_null(value, len) ||
+	    spa_json_is_bool(value, len) ||
+	    spa_json_is_int(value, len) ||
+	    spa_json_is_float(value, len)) {
+		fprintf(file, "%.*s", len, value);
+	} else {
+		encode_string(file, value, len);
+	}
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	int fd, len, res, exit_code = EXIT_FAILURE;
+	void *data;
+	struct stat sbuf;
+	struct spa_json it;
+	const char *value;
+
+	if (argc < 2) {
+		fprintf(stderr, "usage: %s <spa-json-file>\n", argv[0]);
+		goto error;
+	}
+	if ((fd = open(argv[1],  O_CLOEXEC | O_RDONLY)) < 0)  {
+                fprintf(stderr, "error opening file '%s': %m\n", argv[1]);
+		goto error;
+        }
+        if (fstat(fd, &sbuf) < 0) {
+                fprintf(stderr, "error statting file '%s': %m\n", argv[1]);
+                goto error_close;
+	}
+        if ((data = mmap(NULL, sbuf.st_size, PROT_READ, MAP_PRIVATE, fd, 0)) == MAP_FAILED) {
+                fprintf(stderr, "error mmapping file '%s': %m\n", argv[1]);
+                goto error_close;
+	}
+
+	spa_json_init(&it, data, sbuf.st_size);
+	if ((len = spa_json_next(&it, &value)) <= 0) {
+                fprintf(stderr, "not a valid file '%s': %s\n", argv[1], spa_strerror(len));
+		goto error_unmap;
+	}
+	if (!spa_json_is_container(value, len)) {
+		spa_json_init(&it, data, sbuf.st_size);
+		value = "{";
+		len = 1;
+	}
+	if ((res = dump(stdout, 0, &it, value, len)) < 0) {
+                fprintf(stderr, "error parsing file '%s': %s\n", argv[1], spa_strerror(res));
+		goto error_unmap;
+	}
+	fprintf(stdout, "\n");
+	exit_code = EXIT_SUCCESS;
+
+error_unmap:
+        munmap(data, sbuf.st_size);
+error_close:
+        close(fd);
+error:
+	return exit_code;
+}
diff --git a/spa/tools/spa-monitor.c b/spa/tools/spa-monitor.c
new file mode 100644
index 0000000..28159f3
--- /dev/null
+++ b/spa/tools/spa-monitor.c
@@ -0,0 +1,229 @@
+/* Simple Plugin API
+ *
+ * Copyright © 2018 Wim Taymans
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <dlfcn.h>
+#include <errno.h>
+#include <poll.h>
+
+#include <spa/utils/string.h>
+#include <spa/support/log-impl.h>
+#include <spa/support/loop.h>
+#include <spa/support/plugin.h>
+#include <spa/monitor/device.h>
+
+#include <spa/debug/dict.h>
+#include <spa/debug/pod.h>
+
+static SPA_LOG_IMPL(default_log);
+
+struct data {
+	struct spa_log *log;
+	struct spa_loop main_loop;
+
+	struct spa_support support[3];
+	uint32_t n_support;
+
+	unsigned int n_sources;
+	struct spa_source sources[16];
+
+	bool rebuild_fds;
+	struct pollfd fds[16];
+	unsigned int n_fds;
+};
+
+
+static void inspect_info(struct data *data, const struct spa_device_object_info *info)
+{
+	spa_debug_dict(0, info->props);
+}
+
+static void on_device_info(void *_data, const struct spa_device_info *info)
+{
+	spa_debug_dict(0, info->props);
+}
+
+static void on_device_object_info(void *_data, uint32_t id, const struct spa_device_object_info *info)
+{
+	struct data *data = _data;
+
+	if (info == NULL) {
+		fprintf(stderr, "removed: %u\n", id);
+	}
+	else {
+		fprintf(stderr, "added/changed: %u\n", id);
+		inspect_info(data, info);
+	}
+}
+
+static int do_add_source(void *object, struct spa_source *source)
+{
+	struct data *data = object;
+
+	data->sources[data->n_sources] = *source;
+	data->n_sources++;
+	data->rebuild_fds = true;
+
+	return 0;
+}
+
+static const struct spa_loop_methods impl_loop = {
+	SPA_VERSION_LOOP_METHODS,
+	.add_source = do_add_source,
+};
+
+static const struct spa_device_events impl_device_events = {
+	SPA_VERSION_DEVICE_EVENTS,
+	.info = on_device_info,
+	.object_info = on_device_object_info,
+};
+
+static void handle_device(struct data *data, struct spa_device *device)
+{
+	struct spa_hook listener;
+
+	spa_zero(listener);
+	spa_device_add_listener(device, &listener, &impl_device_events, data);
+
+	while (true) {
+		int r;
+		uint32_t i;
+
+		/* rebuild */
+		if (data->rebuild_fds) {
+			for (i = 0; i < data->n_sources; i++) {
+				struct spa_source *p = &data->sources[i];
+				data->fds[i].fd = p->fd;
+				data->fds[i].events = p->mask;
+			}
+			data->n_fds = data->n_sources;
+			data->rebuild_fds = false;
+		}
+
+		r = poll((struct pollfd *) data->fds, data->n_fds, -1);
+		if (r < 0) {
+			if (errno == EINTR)
+				continue;
+			break;
+		}
+		if (r == 0) {
+			fprintf(stderr, "device %p: select timeout", device);
+			break;
+		}
+
+		/* after */
+		for (i = 0; i < data->n_sources; i++) {
+			struct spa_source *p = &data->sources[i];
+			p->func(p);
+		}
+	}
+	spa_hook_remove(&listener);
+}
+
+int main(int argc, char *argv[])
+{
+	struct data data = { 0 };
+	int res;
+	void *handle;
+	spa_handle_factory_enum_func_t enum_func;
+	uint32_t fidx;
+
+	data.log = &default_log.log;
+	data.main_loop.iface = SPA_INTERFACE_INIT(
+			SPA_TYPE_INTERFACE_Loop,
+			SPA_VERSION_LOOP,
+			&impl_loop, &data);
+
+	data.support[0] = SPA_SUPPORT_INIT(SPA_TYPE_INTERFACE_Log, data.log);
+	data.support[1] = SPA_SUPPORT_INIT(SPA_TYPE_INTERFACE_Loop, &data.main_loop);
+	data.n_support = 2;
+
+	if (argc < 2) {
+		printf("usage: %s <plugin.so>\n", argv[0]);
+		return -1;
+	}
+
+	if ((handle = dlopen(argv[1], RTLD_NOW)) == NULL) {
+		printf("can't load %s\n", argv[1]);
+		return -1;
+	}
+	if ((enum_func = dlsym(handle, SPA_HANDLE_FACTORY_ENUM_FUNC_NAME)) == NULL) {
+		printf("can't find function\n");
+		return -1;
+	}
+
+	for (fidx = 0;;) {
+		const struct spa_handle_factory *factory;
+		uint32_t iidx;
+
+		if ((res = enum_func(&factory, &fidx)) <= 0) {
+			if (res != 0)
+				printf("can't enumerate factories: %d\n", res);
+			break;
+		}
+
+		if (factory->version < 1) {
+			printf("factories version %d < %d not supported\n",
+					factory->version, 1);
+			continue;
+		}
+
+		for (iidx = 0;;) {
+			const struct spa_interface_info *info;
+
+			if ((res =
+			     spa_handle_factory_enum_interface_info(factory, &info, &iidx)) <= 0) {
+				if (res != 0)
+					printf("can't enumerate interfaces: %d\n", res);
+				break;
+			}
+
+			if (spa_streq(info->type, SPA_TYPE_INTERFACE_Device)) {
+				struct spa_handle *handle;
+				void *interface;
+
+				handle = calloc(1, spa_handle_factory_get_size(factory, NULL));
+				if ((res =
+				     spa_handle_factory_init(factory, handle, NULL, data.support,
+							     data.n_support)) < 0) {
+					printf("can't make factory instance: %s\n", strerror(res));
+					continue;
+				}
+
+				if ((res =
+				     spa_handle_get_interface(handle, SPA_TYPE_INTERFACE_Device,
+							      &interface)) < 0) {
+					printf("can't get interface: %s\n", strerror(res));
+					continue;
+				}
+				handle_device(&data, interface);
+			}
+		}
+	}
+
+	return 0;
+}