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gstreamer/subprojects/gst-plugins-base/gst/tcp/gstmultihandlesink.h

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
* Copyright (C) <2011> Collabora Ltd.
* Author: Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_MULTI_HANDLE_SINK_H__
#define __GST_MULTI_HANDLE_SINK_H__
#include <gst/gst.h>
#include <gst/base/gstbasesink.h>
#include <gio/gio.h>
G_BEGIN_DECLS
#define GST_TYPE_MULTI_HANDLE_SINK \
(gst_multi_handle_sink_get_type())
#define GST_MULTI_HANDLE_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_MULTI_HANDLE_SINK,GstMultiHandleSink))
#define GST_MULTI_HANDLE_SINK_CAST(obj) ((GstMultiHandleSink *)(obj))
#define GST_MULTI_HANDLE_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_MULTI_HANDLE_SINK,GstMultiHandleSinkClass))
#define GST_IS_MULTI_HANDLE_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_MULTI_HANDLE_SINK))
#define GST_IS_MULTI_HANDLE_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_MULTI_HANDLE_SINK))
#define GST_MULTI_HANDLE_SINK_GET_CLASS(klass) \
(G_TYPE_INSTANCE_GET_CLASS ((klass), GST_TYPE_MULTI_HANDLE_SINK, GstMultiHandleSinkClass))
typedef struct _GstMultiHandleSink GstMultiHandleSink;
typedef struct _GstMultiHandleSinkClass GstMultiHandleSinkClass;
typedef enum {
GST_MULTI_HANDLE_SINK_OPEN = (GST_ELEMENT_FLAG_LAST << 0),
GST_MULTI_HANDLE_SINK_FLAG_LAST = (GST_ELEMENT_FLAG_LAST << 2)
} GstMultiHandleSinkFlags;
/**
* GstRecoverPolicy:
* @GST_RECOVER_POLICY_NONE : no recovering is done
* @GST_RECOVER_POLICY_RESYNC_LATEST : client is moved to last buffer
* @GST_RECOVER_POLICY_RESYNC_SOFT_LIMIT: client is moved to the soft limit
* @GST_RECOVER_POLICY_RESYNC_KEYFRAME : client is moved to latest keyframe
*
* Possible values for the recovery procedure to use when a client consumes
* data too slow and has a backlag of more that soft-limit buffers.
*/
typedef enum
{
GST_RECOVER_POLICY_NONE,
GST_RECOVER_POLICY_RESYNC_LATEST,
GST_RECOVER_POLICY_RESYNC_SOFT_LIMIT,
GST_RECOVER_POLICY_RESYNC_KEYFRAME
} GstRecoverPolicy;
/**
* GstSyncMethod:
* @GST_SYNC_METHOD_LATEST : client receives most recent buffer
* @GST_SYNC_METHOD_NEXT_KEYFRAME : client receives next keyframe
* @GST_SYNC_METHOD_LATEST_KEYFRAME : client receives latest keyframe (burst)
* @GST_SYNC_METHOD_BURST : client receives specific amount of data
* @GST_SYNC_METHOD_BURST_KEYFRAME : client receives specific amount of data
* starting from latest keyframe
* @GST_SYNC_METHOD_BURST_WITH_KEYFRAME : client receives specific amount of data from
* a keyframe, or if there is not enough data after
* the keyframe, starting before the keyframe
*
* This enum defines the selection of the first buffer that is sent
* to a new client.
*/
typedef enum
{
GST_SYNC_METHOD_LATEST,
GST_SYNC_METHOD_NEXT_KEYFRAME,
GST_SYNC_METHOD_LATEST_KEYFRAME,
GST_SYNC_METHOD_BURST,
GST_SYNC_METHOD_BURST_KEYFRAME,
GST_SYNC_METHOD_BURST_WITH_KEYFRAME
} GstSyncMethod;
/**
* GstClientStatus:
* @GST_CLIENT_STATUS_OK : client is ok
* @GST_CLIENT_STATUS_CLOSED : client closed the socket
* @GST_CLIENT_STATUS_REMOVED : client is removed
* @GST_CLIENT_STATUS_SLOW : client is too slow
* @GST_CLIENT_STATUS_ERROR : client is in error
* @GST_CLIENT_STATUS_DUPLICATE: same client added twice
* @GST_CLIENT_STATUS_FLUSHING : client is flushing out the remaining buffers.
*
* This specifies the reason why a client was removed from
* multisocketsink and is received in the "client-removed" signal.
*/
typedef enum
{
GST_CLIENT_STATUS_OK = 0,
GST_CLIENT_STATUS_CLOSED = 1,
GST_CLIENT_STATUS_REMOVED = 2,
GST_CLIENT_STATUS_SLOW = 3,
GST_CLIENT_STATUS_ERROR = 4,
GST_CLIENT_STATUS_DUPLICATE = 5,
GST_CLIENT_STATUS_FLUSHING = 6
} GstClientStatus;
// FIXME: is it better to use GSocket * or a gpointer here ?
typedef union
{
gpointer pointer;
int fd;
GSocket *socket;
} GstMultiSinkHandle;
/* structure for a client
*/
typedef struct {
GstMultiSinkHandle handle;
gchar debug[30]; /* a debug string used in debug calls to
identify the client */
gint bufpos; /* position of this client in the global queue */
gint flushcount; /* the remaining number of buffers to flush out or -1 if the
client is not flushing. */
GstClientStatus status;
GSList *sending; /* the buffers we need to send */
gint bufoffset; /* offset in the first buffer */
gboolean discont;
gboolean new_connection;
gboolean currently_removing;
/* method to sync client when connecting */
GstSyncMethod sync_method;
GstFormat burst_min_format;
guint64 burst_min_value;
GstFormat burst_max_format;
guint64 burst_max_value;
GstCaps *caps; /* caps of last queued buffer */
/* stats */
guint64 bytes_sent;
guint64 connect_time;
guint64 connect_time_monotonic;
guint64 disconnect_time;
guint64 disconnect_time_monotonic;
guint64 last_activity_time;
guint64 last_activity_time_monotonic;
guint64 dropped_buffers;
guint64 avg_queue_size;
guint64 first_buffer_ts;
guint64 last_buffer_ts;
} GstMultiHandleClient;
#define CLIENTS_LOCK_INIT(mhsink) (g_rec_mutex_init(&(mhsink)->clientslock))
#define CLIENTS_LOCK_CLEAR(mhsink) (g_rec_mutex_clear(&(mhsink)->clientslock))
#define CLIENTS_LOCK(mhsink) (g_rec_mutex_lock(&(mhsink)->clientslock))
#define CLIENTS_UNLOCK(mhsink) (g_rec_mutex_unlock(&(mhsink)->clientslock))
gint gst_multi_handle_sink_setup_dscp_client (GstMultiHandleSink * sink, GstMultiHandleClient * client);
gint
gst_multi_handle_sink_new_client_position (GstMultiHandleSink * sink,
GstMultiHandleClient * client);
/**
* GstMultiHandleSink:
*
* The multisocketsink object structure.
*/
struct _GstMultiHandleSink {
GstBaseSink element;
/*< private >*/
guint64 bytes_to_serve; /* how much bytes we must serve */
guint64 bytes_served; /* how much bytes have we served */
GRecMutex clientslock; /* lock to protect the clients list */
GList *clients; /* list of clients we are serving */
guint clients_cookie; /* Cookie to detect changes to the clients list */
GHashTable *handle_hash; /* index of handle -> GstMultiHandleClient */
GMainContext *main_context;
GCancellable *cancellable;
gint qos_dscp;
GArray *bufqueue; /* global queue of buffers */
gboolean running; /* the thread state */
GThread *thread; /* the sender thread */
/* these values are used to check if a client is reading fast
* enough and to control receovery */
GstFormat unit_format;/* the format of the units */
gint64 units_max; /* max units to queue for a client */
gint64 units_soft_max; /* max units a client can lag before recovery starts */
GstRecoverPolicy recover_policy;
GstClockTime timeout; /* max amount of nanoseconds to remain idle */
GstSyncMethod def_sync_method; /* what method to use for connecting clients */
GstFormat def_burst_format;
guint64 def_burst_value;
/* these values are used to control the amount of data
* kept in the queues. It allows clients to perform a burst
* on connect. */
gint bytes_min; /* min number of bytes to queue */
gint64 time_min; /* min time to queue */
gint buffers_min; /* min number of buffers to queue */
gboolean resend_streamheader; /* resend streamheader if it changes */
/* stats */
gint buffers_queued; /* number of queued buffers */
gint bytes_queued; /* number of queued bytes */
gint time_queued; /* number of queued time */
};
struct _GstMultiHandleSinkClass {
GstBaseSinkClass parent_class;
/* methods */
void (*clear) (GstMultiHandleSink *sink);
void (*stop_pre) (GstMultiHandleSink *sink);
void (*stop_post) (GstMultiHandleSink *sink);
gboolean (*start_pre) (GstMultiHandleSink *sink);
gpointer (*thread) (GstMultiHandleSink *sink);
/* called by subclass when it has a new buffer to queue for a client */
gboolean (*client_queue_buffer)
(GstMultiHandleSink *sink,
GstMultiHandleClient *client,
GstBuffer *buffer);
int (*client_get_fd)
(GstMultiHandleClient *client);
void (*client_free) (GstMultiHandleSink *mhsink,
GstMultiHandleClient *client);
void (*handle_debug) (GstMultiSinkHandle handle, gchar debug[30]);
gpointer (*handle_hash_key) (GstMultiSinkHandle handle);
/* called when the client hash/list has been changed */
void (*hash_changed) (GstMultiHandleSink *mhsink);
void (*hash_adding) (GstMultiHandleSink *mhsink, GstMultiHandleClient *client);
void (*hash_removing) (GstMultiHandleSink *mhsink, GstMultiHandleClient *client);
GstMultiHandleClient* (*new_client) (GstMultiHandleSink *mhsink, GstMultiSinkHandle handle, GstSyncMethod sync_method);
/* vtable */
gboolean (*init) (GstMultiHandleSink *sink);
gboolean (*close) (GstMultiHandleSink *sink);
void (*removed) (GstMultiHandleSink *sink, GstMultiSinkHandle handle);
/* subclass needs to emit these because actual argument size (int/pointer) differs */
void (*emit_client_added) (GstMultiHandleSink *mhsink, GstMultiSinkHandle handle);
void (*emit_client_removed) (GstMultiHandleSink *mhsink, GstMultiSinkHandle handle, GstClientStatus status);
};
GType gst_multi_handle_sink_get_type (void);
void gst_multi_handle_sink_add (GstMultiHandleSink *sink, GstMultiSinkHandle handle);
void gst_multi_handle_sink_add_full (GstMultiHandleSink *sink, GstMultiSinkHandle handle, GstSyncMethod sync,
GstFormat min_format, guint64 min_value,
GstFormat max_format, guint64 max_value);
void gst_multi_handle_sink_remove (GstMultiHandleSink *sink, GstMultiSinkHandle handle);
void gst_multi_handle_sink_remove_flush (GstMultiHandleSink *sink, GstMultiSinkHandle handle);
GstStructure* gst_multi_handle_sink_get_stats (GstMultiHandleSink *sink, GstMultiSinkHandle handle);
void gst_multi_handle_sink_remove_client_link (GstMultiHandleSink * sink,
GList * link);
void gst_multi_handle_sink_client_init (GstMultiHandleClient * client, GstSyncMethod sync_method);
#define GST_TYPE_RECOVER_POLICY (gst_multi_handle_sink_recover_policy_get_type())
GType gst_multi_handle_sink_recover_policy_get_type (void);
#define GST_TYPE_SYNC_METHOD (gst_multi_handle_sink_sync_method_get_type())
GType gst_multi_handle_sink_sync_method_get_type (void);
#define GST_TYPE_CLIENT_STATUS (gst_multi_handle_sink_client_status_get_type())
GType gst_multi_handle_sink_client_status_get_type (void);
G_END_DECLS
#endif /* __GST_MULTI_HANDLE_SINK_H__ */
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