Files
wireplumber/lib/wp/proxy-port.c

195 lines
4.8 KiB
C

/* WirePlumber
*
* Copyright © 2019 Collabora Ltd.
* @author Julian Bouzas <julian.bouzas@collabora.com>
*
* SPDX-License-Identifier: MIT
*/
#include "error.h"
#include "proxy-port.h"
#include <pipewire/pipewire.h>
#include <spa/param/audio/format-utils.h>
struct _WpProxyPort
{
WpProxy parent;
/* The task to signal the proxy is initialized */
GTask *init_task;
/* The port proxy listener */
struct spa_hook listener;
/* The port info */
struct pw_port_info *info;
/* The port format */
uint32_t media_type;
uint32_t media_subtype;
struct spa_audio_info_raw format;
};
static void wp_proxy_port_async_initable_init (gpointer iface,
gpointer iface_data);
G_DEFINE_TYPE_WITH_CODE (WpProxyPort, wp_proxy_port, WP_TYPE_PROXY,
G_IMPLEMENT_INTERFACE (G_TYPE_ASYNC_INITABLE,
wp_proxy_port_async_initable_init))
static void
port_event_info(void *data, const struct pw_port_info *info)
{
WpProxyPort *self = data;
/* Update the port info */
self->info = pw_port_info_update(self->info, info);
}
static void
port_event_param(void *data, int seq, uint32_t id, uint32_t index,
uint32_t next, const struct spa_pod *param)
{
WpProxyPort *self = data;
/* Make sure the task is valid */
if (!self->init_task)
return;
/* Only handle EnumFormat */
if (id != SPA_PARAM_EnumFormat)
return;
/* Parse the format */
spa_format_parse(param, &self->media_type, &self->media_subtype);
/* Only handle raw audio formats for now */
if (self->media_type != SPA_MEDIA_TYPE_audio ||
self->media_subtype != SPA_MEDIA_SUBTYPE_raw)
return;
/* Parse the raw audio format */
spa_pod_fixate((struct spa_pod*)param);
spa_format_audio_raw_parse(param, &self->format);
/* Finish the creation of the proxy */
g_task_return_boolean (self->init_task, TRUE);
g_clear_object (&self->init_task);
}
static const struct pw_port_proxy_events port_events = {
PW_VERSION_PORT_PROXY_EVENTS,
.info = port_event_info,
.param = port_event_param,
};
static void
wp_proxy_port_finalize (GObject * object)
{
WpProxyPort *self = WP_PROXY_PORT(object);
/* Destroy the init task */
g_clear_object (&self->init_task);
/* Clear the indo */
if (self->info) {
pw_port_info_free(self->info);
self->info = NULL;
}
G_OBJECT_CLASS (wp_proxy_port_parent_class)->finalize (object);
}
static void
wp_proxy_port_destroy (WpProxy * proxy)
{
WpProxyPort *self = WP_PROXY_PORT(proxy);
GError *error = NULL;
/* Return error if the pipewire destruction happened while the async creation
* of this proxy port object has not finished */
if (self->init_task) {
g_set_error (&error, WP_DOMAIN_LIBRARY, WP_LIBRARY_ERROR_OPERATION_FAILED,
"pipewire port proxy destroyed before finishing");
g_task_return_error (self->init_task, error);
g_clear_object (&self->init_task);
}
}
static void
wp_proxy_port_init_async (GAsyncInitable *initable, int io_priority,
GCancellable *cancellable, GAsyncReadyCallback callback, gpointer data)
{
WpProxyPort *self = WP_PROXY_PORT(initable);
WpProxy *wp_proxy = WP_PROXY(initable);
struct pw_port_proxy *proxy = NULL;
/* Create the async task */
self->init_task = g_task_new (initable, cancellable, callback, data);
/* Get the proxy from the base class */
proxy = wp_proxy_get_pw_proxy(wp_proxy);
/* Add the port proxy listener */
pw_port_proxy_add_listener(proxy, &self->listener, &port_events, self);
/* Emit the EnumFormat param */
pw_port_proxy_enum_params((struct pw_port_proxy*)proxy, 0,
SPA_PARAM_EnumFormat, 0, -1, NULL);
}
static void
wp_proxy_port_async_initable_init (gpointer iface, gpointer iface_data)
{
GAsyncInitableIface *ai_iface = iface;
/* Only set the init_async */
ai_iface->init_async = wp_proxy_port_init_async;
}
static void
wp_proxy_port_init (WpProxyPort * self)
{
}
static void
wp_proxy_port_class_init (WpProxyPortClass * klass)
{
GObjectClass *object_class = (GObjectClass *) klass;
WpProxyClass *proxy_class = (WpProxyClass *) klass;
object_class->finalize = wp_proxy_port_finalize;
proxy_class->destroy = wp_proxy_port_destroy;
}
void
wp_proxy_port_new (guint global_id, gpointer proxy,
GAsyncReadyCallback callback, gpointer user_data)
{
g_async_initable_new_async (
WP_TYPE_PROXY_PORT, G_PRIORITY_DEFAULT, NULL, callback, user_data,
"global-id", global_id,
"pw-proxy", proxy,
NULL);
}
WpProxyPort *
wp_proxy_port_new_finish(GObject *initable, GAsyncResult *res, GError **error)
{
GAsyncInitable *ai = G_ASYNC_INITABLE(initable);
return WP_PROXY_PORT(g_async_initable_new_finish(ai, res, error));
}
const struct pw_port_info *
wp_proxy_port_get_info (WpProxyPort * self)
{
return self->info;
}
const struct spa_audio_info_raw *
wp_proxy_port_get_format (WpProxyPort * self)
{
return &self->format;
}