1 files changed, 457 insertions, 0 deletions
diff --git a/spa/plugins/jack/jack-device.c b/spa/plugins/jack/jack-device.c
new file mode 100644
index 0000000..0ae67d0
--- /dev/null
+++ b/spa/plugins/jack/jack-device.c
@@ -0,0 +1,457 @@
+/* Spa JACK Device
+ *
+ * Copyright © 2019 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 <stddef.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <poll.h>
+
+#include <spa/support/log.h>
+#include <spa/utils/type.h>
+#include <spa/utils/keys.h>
+#include <spa/utils/names.h>
+#include <spa/utils/result.h>
+#include <spa/utils/string.h>
+#include <spa/node/node.h>
+#include <spa/support/loop.h>
+#include <spa/support/plugin.h>
+#include <spa/monitor/device.h>
+#include <spa/monitor/utils.h>
+#include <spa/param/param.h>
+#include <spa/pod/filter.h>
+#include <spa/pod/parser.h>
+#include <spa/debug/pod.h>
+#include <spa/debug/log.h>
+
+#include "jack-client.h"
+
+#define NAME  "jack-device"
+
+#define MAX_DEVICES	64
+
+#define DEFAULT_SERVER "default"
+
+struct props {
+	char server[128];
+};
+
+static void reset_props(struct props *props)
+{
+	strncpy(props->server, DEFAULT_SERVER, 64);
+}
+
+struct node {
+	enum spa_direction direction;
+};
+
+struct impl {
+	struct spa_handle handle;
+	struct spa_device device;
+
+	struct spa_log *log;
+	struct spa_hook_list hooks;
+
+	struct props props;
+
+	struct node nodes[2];
+	uint32_t n_nodes;
+
+	uint32_t profile;
+
+	struct spa_jack_client client;
+};
+
+static int emit_node(struct impl *this, uint32_t id)
+{
+	struct spa_dict_item items[6];
+	struct spa_device_object_info info;
+	char jack_client[64];
+
+	info = SPA_DEVICE_OBJECT_INFO_INIT();
+	info.type = SPA_TYPE_INTERFACE_Node;
+	if (this->nodes[id].direction == SPA_DIRECTION_INPUT)
+                info.factory_name = SPA_NAME_API_JACK_SINK;
+        else
+                info.factory_name = SPA_NAME_API_JACK_SOURCE;
+
+	info.change_mask = SPA_DEVICE_OBJECT_CHANGE_MASK_PROPS;
+	snprintf(jack_client, sizeof(jack_client), "pointer:%p", &this->client);
+	items[0] = SPA_DICT_ITEM_INIT(SPA_KEY_API_JACK_CLIENT, jack_client);
+	info.props = &SPA_DICT_INIT(items, 1);
+
+	spa_device_emit_object_info(&this->hooks, id, &info);
+
+	return 0;
+}
+
+static int activate_profile(struct impl *this, uint32_t id)
+{
+	int res = 0;
+	uint32_t i, n;
+	const char ** ports;
+
+	spa_log_debug(this->log, "profile %d", id);
+	if (this->profile == id)
+		return 0;
+
+	for (i = 0; i < this->n_nodes; i++)
+		spa_device_emit_object_info(&this->hooks, i, NULL);
+	this->n_nodes = 0;
+
+	spa_jack_client_close(&this->client);
+
+	if (id == 0)
+		goto done;
+
+	res = spa_jack_client_open(&this->client, "PipeWire", NULL);
+	if (res < 0) {
+		spa_log_error(this->log, NAME" %p: can't open client: %s",
+				this, spa_strerror(res));
+		return res;
+	}
+	n = 0;
+	ports = jack_get_ports(this->client.client,
+			NULL, JACK_DEFAULT_AUDIO_TYPE,
+			JackPortIsPhysical|JackPortIsOutput);
+	if (ports) {
+		jack_free(ports);
+		this->nodes[n].direction = SPA_DIRECTION_OUTPUT;
+		emit_node(this, n++);
+	}
+
+	ports = jack_get_ports(this->client.client,
+			NULL, JACK_DEFAULT_AUDIO_TYPE,
+			JackPortIsPhysical|JackPortIsInput);
+	if (ports) {
+		jack_free(ports);
+		this->nodes[n].direction = SPA_DIRECTION_INPUT;
+		emit_node(this, n++);
+	}
+	this->n_nodes = n;
+done:
+	this->profile = id;
+
+	return res;
+}
+
+static int emit_info(struct impl *this, bool full)
+{
+	int err = 0;
+	struct spa_dict_item items[10];
+	struct spa_device_info dinfo;
+	struct spa_param_info params[2];
+	char name[200];
+
+	dinfo = SPA_DEVICE_INFO_INIT();
+
+	dinfo.change_mask = SPA_DEVICE_CHANGE_MASK_PROPS;
+	items[0] = SPA_DICT_ITEM_INIT(SPA_KEY_DEVICE_API,  "jack");
+	items[1] = SPA_DICT_ITEM_INIT(SPA_KEY_DEVICE_NICK, "jack");
+	if (spa_streq(this->props.server, "default"))
+		snprintf(name, sizeof(name), "JACK Client");
+	else
+		snprintf(name, sizeof(name), "JACK Client (%s)", this->props.server);
+	items[2] = SPA_DICT_ITEM_INIT(SPA_KEY_DEVICE_NAME, name);
+	items[3] = SPA_DICT_ITEM_INIT(SPA_KEY_DEVICE_DESCRIPTION, name);
+	items[4] = SPA_DICT_ITEM_INIT(SPA_KEY_API_JACK_SERVER, this->props.server);
+	items[5] = SPA_DICT_ITEM_INIT(SPA_KEY_MEDIA_CLASS, "Audio/Device");
+	dinfo.props = &SPA_DICT_INIT(items, 6);
+
+	dinfo.change_mask |= SPA_DEVICE_CHANGE_MASK_PARAMS;
+	params[0] = SPA_PARAM_INFO(SPA_PARAM_EnumProfile, SPA_PARAM_INFO_READ);
+	params[1] = SPA_PARAM_INFO(SPA_PARAM_Profile, SPA_PARAM_INFO_READWRITE);
+	dinfo.n_params = SPA_N_ELEMENTS(params);
+	dinfo.params = params;
+
+	spa_device_emit_info(&this->hooks, &dinfo);
+
+	return err;
+}
+
+static int impl_add_listener(void *object,
+			struct spa_hook *listener,
+			const struct spa_device_events *events,
+			void *data)
+{
+	struct impl *this = object;
+	struct spa_hook_list save;
+	uint32_t i;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+	spa_return_val_if_fail(events != NULL, -EINVAL);
+
+	spa_hook_list_isolate(&this->hooks, &save, listener, events, data);
+
+	if (events->info)
+		emit_info(this, true);
+
+	if (events->object_info) {
+		for (i = 0; i < this->n_nodes; i++)
+			emit_node(this, i);
+	}
+
+	spa_hook_list_join(&this->hooks, &save);
+
+	return 0;
+}
+
+
+static int impl_sync(void *object, int seq)
+{
+	struct impl *this = object;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+
+	spa_device_emit_result(&this->hooks, seq, 0, 0, NULL);
+
+	return 0;
+}
+
+static struct spa_pod *build_profile(struct impl *this, struct spa_pod_builder *b,
+		uint32_t id, uint32_t index)
+{
+	struct spa_pod_frame f[2];
+	const char *name, *desc;
+
+	switch (index) {
+	case 0:
+		name = "off";
+		desc = "Off";
+		break;
+	case 1:
+		name = "on";
+		desc = "On";
+		break;
+	default:
+		errno = EINVAL;
+		return NULL;
+	}
+
+	spa_pod_builder_push_object(b, &f[0], SPA_TYPE_OBJECT_ParamProfile, id);
+	spa_pod_builder_add(b,
+		SPA_PARAM_PROFILE_index,   SPA_POD_Int(index),
+		SPA_PARAM_PROFILE_name, SPA_POD_String(name),
+		SPA_PARAM_PROFILE_description, SPA_POD_String(desc),
+		0);
+	return spa_pod_builder_pop(b, &f[0]);
+}
+
+static int impl_enum_params(void *object, int seq,
+			    uint32_t id, uint32_t start, uint32_t num,
+			    const struct spa_pod *filter)
+{
+	struct impl *this = object;
+	struct spa_pod *param;
+	struct spa_pod_builder b = { 0 };
+	uint8_t buffer[1024];
+	struct spa_result_device_params result;
+	uint32_t count = 0;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+	spa_return_val_if_fail(num != 0, -EINVAL);
+
+	result.id = id;
+	result.next = start;
+      next:
+	result.index = result.next++;
+
+	spa_pod_builder_init(&b, buffer, sizeof(buffer));
+
+	switch (id) {
+	case SPA_PARAM_EnumProfile:
+	{
+		switch (result.index) {
+		case 0:
+		case 1:
+			param = build_profile(this, &b, id, result.index);
+			break;
+		default:
+			return 0;
+		}
+		break;
+	}
+	case SPA_PARAM_Profile:
+	{
+		switch (result.index) {
+		case 0:
+			param = build_profile(this, &b, id, this->profile);
+			break;
+		default:
+			return 0;
+		}
+		break;
+	}
+	default:
+		return -ENOENT;
+	}
+
+	if (spa_pod_filter(&b, &result.param, param, filter) < 0)
+		goto next;
+
+	spa_device_emit_result(&this->hooks, seq, 0,
+			SPA_RESULT_TYPE_DEVICE_PARAMS, &result);
+
+	if (++count != num)
+		goto next;
+
+	return 0;
+}
+
+static int impl_set_param(void *object,
+			  uint32_t id, uint32_t flags,
+			  const struct spa_pod *param)
+{
+	struct impl *this = object;
+	int res;
+
+	spa_return_val_if_fail(this != NULL, -EINVAL);
+
+	switch (id) {
+	case SPA_PARAM_Profile:
+	{
+		uint32_t idx;
+
+		if ((res = spa_pod_parse_object(param,
+				SPA_TYPE_OBJECT_ParamProfile, NULL,
+				SPA_PARAM_PROFILE_index, SPA_POD_Int(&idx))) < 0) {
+			spa_log_warn(this->log, "can't parse profile");
+			spa_debug_log_pod(this->log, SPA_LOG_LEVEL_DEBUG, 0, NULL, param);
+			return res;
+		}
+		activate_profile(this, idx);
+		break;
+	}
+	default:
+		return -ENOENT;
+	}
+	return 0;
+}
+
+static const struct spa_device_methods impl_device = {
+	SPA_VERSION_DEVICE_METHODS,
+	.add_listener = impl_add_listener,
+	.sync = impl_sync,
+	.enum_params = impl_enum_params,
+	.set_param = impl_set_param,
+};
+
+static int impl_get_interface(struct spa_handle *handle, const char *type, void **interface)
+{
+	struct impl *this;
+
+	spa_return_val_if_fail(handle != NULL, -EINVAL);
+	spa_return_val_if_fail(interface != NULL, -EINVAL);
+
+	this = (struct impl *) handle;
+
+	if (spa_streq(type, SPA_TYPE_INTERFACE_Device))
+		*interface = &this->device;
+	else
+		return -ENOENT;
+
+	return 0;
+}
+
+static int impl_clear(struct spa_handle *handle)
+{
+	struct impl *this;
+
+	spa_return_val_if_fail(handle != NULL, -EINVAL);
+
+	this = (struct impl *) handle;
+
+	activate_profile(this, 0);
+	return 0;
+}
+
+static size_t
+impl_get_size(const struct spa_handle_factory *factory,
+	      const struct spa_dict *params)
+{
+	return sizeof(struct impl);
+}
+
+static int
+impl_init(const struct spa_handle_factory *factory,
+	  struct spa_handle *handle,
+	  const struct spa_dict *info,
+	  const struct spa_support *support,
+	  uint32_t n_support)
+{
+	struct impl *this;
+	const char *str;
+
+	spa_return_val_if_fail(factory != NULL, -EINVAL);
+	spa_return_val_if_fail(handle != NULL, -EINVAL);
+
+	handle->get_interface = impl_get_interface;
+	handle->clear = impl_clear;
+
+	this = (struct impl *) handle;
+
+	this->log = spa_support_find(support, n_support, SPA_TYPE_INTERFACE_Log);
+
+	this->device.iface = SPA_INTERFACE_INIT(
+			SPA_TYPE_INTERFACE_Device,
+			SPA_VERSION_DEVICE,
+			&impl_device, this);
+	spa_hook_list_init(&this->hooks);
+
+	reset_props(&this->props);
+
+	if (info && (str = spa_dict_lookup(info, SPA_KEY_API_JACK_SERVER)))
+		snprintf(this->props.server, 64, "%s", str);
+	return 0;
+}
+
+static const struct spa_interface_info impl_interfaces[] = {
+	{SPA_TYPE_INTERFACE_Device,},
+};
+
+static int
+impl_enum_interface_info(const struct spa_handle_factory *factory,
+			 const struct spa_interface_info **info,
+			 uint32_t *index)
+{
+	spa_return_val_if_fail(factory != NULL, -EINVAL);
+	spa_return_val_if_fail(info != NULL, -EINVAL);
+	spa_return_val_if_fail(index != NULL, -EINVAL);
+
+	if (*index >= SPA_N_ELEMENTS(impl_interfaces))
+		return 0;
+
+	*info = &impl_interfaces[(*index)++];
+	return 1;
+}
+
+const struct spa_handle_factory spa_jack_device_factory = {
+	SPA_VERSION_HANDLE_FACTORY,
+	SPA_NAME_API_JACK_DEVICE,
+	NULL,
+	impl_get_size,
+	impl_init,
+	impl_enum_interface_info,
+};