+++ /dev/null
-/* GStreamer
- * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
- * Copyright (C) <2004> Thomas Vander Stichele <thomas at apestaart dot org>
- * Copyright (C) 2006 Wim Taymans <wim at fluendo dot com>
- *
- * 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., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-/**
- * SECTION:element-multifdsink
- * @see_also: tcpserversink
- *
- * This plugin writes incoming data to a set of file descriptors. The
- * file descriptors can be added to multifdsink by emitting the #GstMultiFdSink::add signal.
- * For each descriptor added, the #GstMultiFdSink::client-added signal will be called.
- *
- * As of version 0.10.8, a client can also be added with the #GstMultiFdSink::add-full signal
- * that allows for more control over what and how much data a client
- * initially receives.
- *
- * Clients can be removed from multifdsink by emitting the #GstMultiFdSink::remove signal. For
- * each descriptor removed, the #GstMultiFdSink::client-removed signal will be called. The
- * #GstMultiFdSink::client-removed signal can also be fired when multifdsink decides that a
- * client is not active anymore or, depending on the value of the
- * #GstMultiFdSink:recover-policy property, if the client is reading too slowly.
- * In all cases, multifdsink will never close a file descriptor itself.
- * The user of multifdsink is responsible for closing all file descriptors.
- * This can for example be done in response to the #GstMultiFdSink::client-fd-removed signal.
- * Note that multifdsink still has a reference to the file descriptor when the
- * #GstMultiFdSink::client-removed signal is emitted, so that "get-stats" can be performed on
- * the descriptor; it is therefore not safe to close the file descriptor in
- * the #GstMultiFdSink::client-removed signal handler, and you should use the
- * #GstMultiFdSink::client-fd-removed signal to safely close the fd.
- *
- * Multifdsink internally keeps a queue of the incoming buffers and uses a
- * separate thread to send the buffers to the clients. This ensures that no
- * client write can block the pipeline and that clients can read with different
- * speeds.
- *
- * When adding a client to multifdsink, the #GstMultiFdSink:sync-method property will define
- * which buffer in the queued buffers will be sent first to the client. Clients
- * can be sent the most recent buffer (which might not be decodable by the
- * client if it is not a keyframe), the next keyframe received in
- * multifdsink (which can take some time depending on the keyframe rate), or the
- * last received keyframe (which will cause a simple burst-on-connect).
- * Multifdsink will always keep at least one keyframe in its internal buffers
- * when the sync-mode is set to latest-keyframe.
- *
- * As of version 0.10.8, there are additional values for the #GstMultiFdSink:sync-method
- * property to allow finer control over burst-on-connect behaviour. By selecting
- * the 'burst' method a minimum burst size can be chosen, 'burst-keyframe'
- * additionally requires that the burst begin with a keyframe, and
- * 'burst-with-keyframe' attempts to burst beginning with a keyframe, but will
- * prefer a minimum burst size even if it requires not starting with a keyframe.
- *
- * Multifdsink can be instructed to keep at least a minimum amount of data
- * expressed in time or byte units in its internal queues with the
- * #GstMultiFdSink:time-min and #GstMultiFdSink:bytes-min properties respectively.
- * These properties are useful if the application adds clients with the
- * #GstMultiFdSink::add-full signal to make sure that a burst connect can
- * actually be honored.
- *
- * When streaming data, clients are allowed to read at a different rate than
- * the rate at which multifdsink receives data. If the client is reading too
- * fast, no data will be send to the client until multifdsink receives more
- * data. If the client, however, reads too slowly, data for that client will be
- * queued up in multifdsink. Two properties control the amount of data
- * (buffers) that is queued in multifdsink: #GstMultiFdSink:buffers-max and
- * #GstMultiFdSink:buffers-soft-max. A client that falls behind by
- * #GstMultiFdSink:buffers-max is removed from multifdsink forcibly.
- *
- * A client with a lag of at least #GstMultiFdSink:buffers-soft-max enters the recovery
- * procedure which is controlled with the #GstMultiFdSink:recover-policy property.
- * A recover policy of NONE will do nothing, RESYNC_LATEST will send the most recently
- * received buffer as the next buffer for the client, RESYNC_SOFT_LIMIT
- * positions the client to the soft limit in the buffer queue and
- * RESYNC_KEYFRAME positions the client at the most recent keyframe in the
- * buffer queue.
- *
- * multifdsink will by default synchronize on the clock before serving the
- * buffers to the clients. This behaviour can be disabled by setting the sync
- * property to FALSE. Multifdsink will by default not do QoS and will never
- * drop late buffers.
- *
- * Last reviewed on 2006-09-12 (0.10.10)
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <gst/gst-i18n-plugin.h>
-
-#include <sys/ioctl.h>
-
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <netinet/in.h>
-
-#ifdef HAVE_FIONREAD_IN_SYS_FILIO
-#include <sys/filio.h>
-#endif
-
-#include "gstmultifdsink.h"
-#include "gstmultifdsink-marshal.h"
-
-#define NOT_IMPLEMENTED 0
-
-static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
- GST_PAD_SINK,
- GST_PAD_ALWAYS,
- GST_STATIC_CAPS_ANY);
-
-GST_DEBUG_CATEGORY_STATIC (multifdsink_debug);
-#define GST_CAT_DEFAULT (multifdsink_debug)
-
-/* MultiFdSink signals and args */
-enum
-{
- /* methods */
- SIGNAL_ADD,
- SIGNAL_ADD_BURST,
- SIGNAL_REMOVE,
- SIGNAL_REMOVE_FLUSH,
- SIGNAL_CLEAR,
- SIGNAL_GET_STATS,
-
- /* signals */
- SIGNAL_CLIENT_ADDED,
- SIGNAL_CLIENT_REMOVED,
- SIGNAL_CLIENT_FD_REMOVED,
-
- LAST_SIGNAL
-};
-
-
-/* this is really arbitrarily chosen */
-#define DEFAULT_MODE 1
-#define DEFAULT_BUFFERS_MAX -1
-#define DEFAULT_BUFFERS_SOFT_MAX -1
-#define DEFAULT_TIME_MIN -1
-#define DEFAULT_BYTES_MIN -1
-#define DEFAULT_BUFFERS_MIN -1
-#define DEFAULT_UNIT_TYPE GST_TCP_UNIT_TYPE_BUFFERS
-#define DEFAULT_UNITS_MAX -1
-#define DEFAULT_UNITS_SOFT_MAX -1
-#define DEFAULT_RECOVER_POLICY GST_RECOVER_POLICY_NONE
-#define DEFAULT_TIMEOUT 0
-#define DEFAULT_SYNC_METHOD GST_SYNC_METHOD_LATEST
-
-#define DEFAULT_BURST_UNIT GST_TCP_UNIT_TYPE_UNDEFINED
-#define DEFAULT_BURST_VALUE 0
-
-#define DEFAULT_QOS_DSCP -1
-#define DEFAULT_HANDLE_READ TRUE
-
-#define DEFAULT_RESEND_STREAMHEADER TRUE
-
-enum
-{
- PROP_0,
- PROP_MODE,
- PROP_BUFFERS_QUEUED,
- PROP_BYTES_QUEUED,
- PROP_TIME_QUEUED,
-
- PROP_UNIT_TYPE,
- PROP_UNITS_MAX,
- PROP_UNITS_SOFT_MAX,
-
- PROP_BUFFERS_MAX,
- PROP_BUFFERS_SOFT_MAX,
-
- PROP_TIME_MIN,
- PROP_BYTES_MIN,
- PROP_BUFFERS_MIN,
-
- PROP_RECOVER_POLICY,
- PROP_TIMEOUT,
- PROP_SYNC_METHOD,
- PROP_BYTES_TO_SERVE,
- PROP_BYTES_SERVED,
-
- PROP_BURST_UNIT,
- PROP_BURST_VALUE,
-
- PROP_QOS_DSCP,
-
- PROP_HANDLE_READ,
-
- PROP_RESEND_STREAMHEADER,
-
- PROP_NUM_FDS,
-
- PROP_LAST
-};
-
-/* For backward compat, we can't really select the poll mode anymore with
- * GstPoll. */
-#define GST_TYPE_FDSET_MODE (gst_fdset_mode_get_type())
-static GType
-gst_fdset_mode_get_type (void)
-{
- static GType fdset_mode_type = 0;
- static const GEnumValue fdset_mode[] = {
- {0, "Select", "select"},
- {1, "Poll", "poll"},
- {2, "EPoll", "epoll"},
- {0, NULL, NULL},
- };
-
- if (!fdset_mode_type) {
- fdset_mode_type = g_enum_register_static ("GstFDSetMode", fdset_mode);
- }
- return fdset_mode_type;
-}
-
-#define GST_TYPE_RECOVER_POLICY (gst_recover_policy_get_type())
-static GType
-gst_recover_policy_get_type (void)
-{
- static GType recover_policy_type = 0;
- static const GEnumValue recover_policy[] = {
- {GST_RECOVER_POLICY_NONE,
- "Do not try to recover", "none"},
- {GST_RECOVER_POLICY_RESYNC_LATEST,
- "Resync client to latest buffer", "latest"},
- {GST_RECOVER_POLICY_RESYNC_SOFT_LIMIT,
- "Resync client to soft limit", "soft-limit"},
- {GST_RECOVER_POLICY_RESYNC_KEYFRAME,
- "Resync client to most recent keyframe", "keyframe"},
- {0, NULL, NULL},
- };
-
- if (!recover_policy_type) {
- recover_policy_type =
- g_enum_register_static ("GstRecoverPolicy", recover_policy);
- }
- return recover_policy_type;
-}
-
-#define GST_TYPE_SYNC_METHOD (gst_sync_method_get_type())
-static GType
-gst_sync_method_get_type (void)
-{
- static GType sync_method_type = 0;
- static const GEnumValue sync_method[] = {
- {GST_SYNC_METHOD_LATEST,
- "Serve starting from the latest buffer", "latest"},
- {GST_SYNC_METHOD_NEXT_KEYFRAME,
- "Serve starting from the next keyframe", "next-keyframe"},
- {GST_SYNC_METHOD_LATEST_KEYFRAME,
- "Serve everything since the latest keyframe (burst)",
- "latest-keyframe"},
- {GST_SYNC_METHOD_BURST, "Serve burst-value data to client", "burst"},
- {GST_SYNC_METHOD_BURST_KEYFRAME,
- "Serve burst-value data starting on a keyframe",
- "burst-keyframe"},
- {GST_SYNC_METHOD_BURST_WITH_KEYFRAME,
- "Serve burst-value data preferably starting on a keyframe",
- "burst-with-keyframe"},
- {0, NULL, NULL},
- };
-
- if (!sync_method_type) {
- sync_method_type = g_enum_register_static ("GstSyncMethod", sync_method);
- }
- return sync_method_type;
-}
-
-#define GST_TYPE_UNIT_TYPE (gst_unit_type_get_type())
-static GType
-gst_unit_type_get_type (void)
-{
- static GType unit_type_type = 0;
- static const GEnumValue unit_type[] = {
- {GST_TCP_UNIT_TYPE_UNDEFINED, "Undefined", "undefined"},
- {GST_TCP_UNIT_TYPE_BUFFERS, "Buffers", "buffers"},
- {GST_TCP_UNIT_TYPE_BYTES, "Bytes", "bytes"},
- {GST_TCP_UNIT_TYPE_TIME, "Time", "time"},
- {0, NULL, NULL},
- };
-
- if (!unit_type_type) {
- unit_type_type = g_enum_register_static ("GstTCPUnitType", unit_type);
- }
- return unit_type_type;
-}
-
-#define GST_TYPE_CLIENT_STATUS (gst_client_status_get_type())
-static GType
-gst_client_status_get_type (void)
-{
- static GType client_status_type = 0;
- static const GEnumValue client_status[] = {
- {GST_CLIENT_STATUS_OK, "ok", "ok"},
- {GST_CLIENT_STATUS_CLOSED, "Closed", "closed"},
- {GST_CLIENT_STATUS_REMOVED, "Removed", "removed"},
- {GST_CLIENT_STATUS_SLOW, "Too slow", "slow"},
- {GST_CLIENT_STATUS_ERROR, "Error", "error"},
- {GST_CLIENT_STATUS_DUPLICATE, "Duplicate", "duplicate"},
- {GST_CLIENT_STATUS_FLUSHING, "Flushing", "flushing"},
- {0, NULL, NULL},
- };
-
- if (!client_status_type) {
- client_status_type =
- g_enum_register_static ("GstClientStatus", client_status);
- }
- return client_status_type;
-}
-
-static void gst_multi_fd_sink_finalize (GObject * object);
-
-static void gst_multi_fd_sink_remove_client_link (GstMultiFdSink * sink,
- GList * link);
-
-static GstFlowReturn gst_multi_fd_sink_render (GstBaseSink * bsink,
- GstBuffer * buf);
-static GstStateChangeReturn gst_multi_fd_sink_change_state (GstElement *
- element, GstStateChange transition);
-
-static void gst_multi_fd_sink_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec);
-static void gst_multi_fd_sink_get_property (GObject * object, guint prop_id,
- GValue * value, GParamSpec * pspec);
-
-#define gst_multi_fd_sink_parent_class parent_class
-G_DEFINE_TYPE (GstMultiFdSink, gst_multi_fd_sink, GST_TYPE_BASE_SINK);
-
-static guint gst_multi_fd_sink_signals[LAST_SIGNAL] = { 0 };
-
-static void
-gst_multi_fd_sink_class_init (GstMultiFdSinkClass * klass)
-{
- GObjectClass *gobject_class;
- GstElementClass *gstelement_class;
- GstBaseSinkClass *gstbasesink_class;
-
- gobject_class = (GObjectClass *) klass;
- gstelement_class = (GstElementClass *) klass;
- gstbasesink_class = (GstBaseSinkClass *) klass;
-
- gobject_class->set_property = gst_multi_fd_sink_set_property;
- gobject_class->get_property = gst_multi_fd_sink_get_property;
- gobject_class->finalize = gst_multi_fd_sink_finalize;
-
- /**
- * GstMultiFdSink::mode
- *
- * The mode for selecting activity on the fds.
- *
- * This property is deprecated since 0.10.18, if will now automatically
- * select and use the most optimal method.
- */
- g_object_class_install_property (gobject_class, PROP_MODE,
- g_param_spec_enum ("mode", "Mode",
- "The mode for selecting activity on the fds (deprecated)",
- GST_TYPE_FDSET_MODE, DEFAULT_MODE,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
- g_object_class_install_property (gobject_class, PROP_BUFFERS_MAX,
- g_param_spec_int ("buffers-max", "Buffers max",
- "max number of buffers to queue for a client (-1 = no limit)", -1,
- G_MAXINT, DEFAULT_BUFFERS_MAX,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_BUFFERS_SOFT_MAX,
- g_param_spec_int ("buffers-soft-max", "Buffers soft max",
- "Recover client when going over this limit (-1 = no limit)", -1,
- G_MAXINT, DEFAULT_BUFFERS_SOFT_MAX,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
- g_object_class_install_property (gobject_class, PROP_BYTES_MIN,
- g_param_spec_int ("bytes-min", "Bytes min",
- "min number of bytes to queue (-1 = as little as possible)", -1,
- G_MAXINT, DEFAULT_BYTES_MIN,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_TIME_MIN,
- g_param_spec_int64 ("time-min", "Time min",
- "min number of time to queue (-1 = as little as possible)", -1,
- G_MAXINT64, DEFAULT_TIME_MIN,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_BUFFERS_MIN,
- g_param_spec_int ("buffers-min", "Buffers min",
- "min number of buffers to queue (-1 = as few as possible)", -1,
- G_MAXINT, DEFAULT_BUFFERS_MIN,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
- g_object_class_install_property (gobject_class, PROP_UNIT_TYPE,
- g_param_spec_enum ("unit-type", "Units type",
- "The unit to measure the max/soft-max/queued properties",
- GST_TYPE_UNIT_TYPE, DEFAULT_UNIT_TYPE,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_UNITS_MAX,
- g_param_spec_int64 ("units-max", "Units max",
- "max number of units to queue (-1 = no limit)", -1, G_MAXINT64,
- DEFAULT_UNITS_MAX, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_UNITS_SOFT_MAX,
- g_param_spec_int64 ("units-soft-max", "Units soft max",
- "Recover client when going over this limit (-1 = no limit)", -1,
- G_MAXINT64, DEFAULT_UNITS_SOFT_MAX,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
- g_object_class_install_property (gobject_class, PROP_BUFFERS_QUEUED,
- g_param_spec_uint ("buffers-queued", "Buffers queued",
- "Number of buffers currently queued", 0, G_MAXUINT, 0,
- G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
-#if NOT_IMPLEMENTED
- g_object_class_install_property (gobject_class, PROP_BYTES_QUEUED,
- g_param_spec_uint ("bytes-queued", "Bytes queued",
- "Number of bytes currently queued", 0, G_MAXUINT, 0,
- G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_TIME_QUEUED,
- g_param_spec_uint64 ("time-queued", "Time queued",
- "Number of time currently queued", 0, G_MAXUINT64, 0,
- G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
-#endif
-
- g_object_class_install_property (gobject_class, PROP_RECOVER_POLICY,
- g_param_spec_enum ("recover-policy", "Recover Policy",
- "How to recover when client reaches the soft max",
- GST_TYPE_RECOVER_POLICY, DEFAULT_RECOVER_POLICY,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_TIMEOUT,
- g_param_spec_uint64 ("timeout", "Timeout",
- "Maximum inactivity timeout in nanoseconds for a client (0 = no limit)",
- 0, G_MAXUINT64, DEFAULT_TIMEOUT,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_SYNC_METHOD,
- g_param_spec_enum ("sync-method", "Sync Method",
- "How to sync new clients to the stream", GST_TYPE_SYNC_METHOD,
- DEFAULT_SYNC_METHOD, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_BYTES_TO_SERVE,
- g_param_spec_uint64 ("bytes-to-serve", "Bytes to serve",
- "Number of bytes received to serve to clients", 0, G_MAXUINT64, 0,
- G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_BYTES_SERVED,
- g_param_spec_uint64 ("bytes-served", "Bytes served",
- "Total number of bytes send to all clients", 0, G_MAXUINT64, 0,
- G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
-
- g_object_class_install_property (gobject_class, PROP_BURST_UNIT,
- g_param_spec_enum ("burst-unit", "Burst unit",
- "The format of the burst units (when sync-method is burst[[-with]-keyframe])",
- GST_TYPE_UNIT_TYPE, DEFAULT_BURST_UNIT,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- g_object_class_install_property (gobject_class, PROP_BURST_VALUE,
- g_param_spec_uint64 ("burst-value", "Burst value",
- "The amount of burst expressed in burst-unit", 0, G_MAXUINT64,
- DEFAULT_BURST_VALUE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
- g_object_class_install_property (gobject_class, PROP_QOS_DSCP,
- g_param_spec_int ("qos-dscp", "QoS diff srv code point",
- "Quality of Service, differentiated services code point (-1 default)",
- -1, 63, DEFAULT_QOS_DSCP,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- /**
- * GstMultiFdSink::handle-read
- *
- * Handle read requests from clients and discard the data.
- *
- * Since: 0.10.23
- */
- g_object_class_install_property (gobject_class, PROP_HANDLE_READ,
- g_param_spec_boolean ("handle-read", "Handle Read",
- "Handle client reads and discard the data",
- DEFAULT_HANDLE_READ, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
- /**
- * GstMultiFdSink::resend-streamheader
- *
- * Resend the streamheaders to existing clients when they change.
- *
- * Since: 0.10.23
- */
- g_object_class_install_property (gobject_class, PROP_RESEND_STREAMHEADER,
- g_param_spec_boolean ("resend-streamheader", "Resend streamheader",
- "Resend the streamheader if it changes in the caps",
- DEFAULT_RESEND_STREAMHEADER,
- G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
- g_object_class_install_property (gobject_class, PROP_NUM_FDS,
- g_param_spec_uint ("num-fds", "Number of fds",
- "The current number of client file descriptors.",
- 0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
-
- /**
- * GstMultiFdSink::add:
- * @gstmultifdsink: the multifdsink element to emit this signal on
- * @fd: the file descriptor to add to multifdsink
- *
- * Hand the given open file descriptor to multifdsink to write to.
- */
- gst_multi_fd_sink_signals[SIGNAL_ADD] =
- g_signal_new ("add", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiFdSinkClass,
- add), NULL, NULL, g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1,
- G_TYPE_INT);
- /**
- * GstMultiFdSink::add-full:
- * @gstmultifdsink: the multifdsink element to emit this signal on
- * @fd: the file descriptor to add to multifdsink
- * @sync: the sync method to use
- * @unit_type_min: the unit-type of @value_min
- * @value_min: the minimum amount of data to burst expressed in
- * @unit_type_min units.
- * @unit_type_max: the unit-type of @value_max
- * @value_max: the maximum amount of data to burst expressed in
- * @unit_type_max units.
- *
- * Hand the given open file descriptor to multifdsink to write to and
- * specify the burst parameters for the new connection.
- */
- gst_multi_fd_sink_signals[SIGNAL_ADD_BURST] =
- g_signal_new ("add-full", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiFdSinkClass,
- add_full), NULL, NULL,
- gst_multi_fd_sink_marshal_VOID__INT_ENUM_INT_UINT64_INT_UINT64,
- G_TYPE_NONE, 6, G_TYPE_INT, GST_TYPE_SYNC_METHOD, GST_TYPE_UNIT_TYPE,
- G_TYPE_UINT64, GST_TYPE_UNIT_TYPE, G_TYPE_UINT64);
- /**
- * GstMultiFdSink::remove:
- * @gstmultifdsink: the multifdsink element to emit this signal on
- * @fd: the file descriptor to remove from multifdsink
- *
- * Remove the given open file descriptor from multifdsink.
- */
- gst_multi_fd_sink_signals[SIGNAL_REMOVE] =
- g_signal_new ("remove", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiFdSinkClass,
- remove), NULL, NULL, gst_multi_fd_sink_marshal_VOID__INT, G_TYPE_NONE,
- 1, G_TYPE_INT);
- /**
- * GstMultiFdSink::remove-flush:
- * @gstmultifdsink: the multifdsink element to emit this signal on
- * @fd: the file descriptor to remove from multifdsink
- *
- * Remove the given open file descriptor from multifdsink after flushing all
- * the pending data to the fd.
- */
- gst_multi_fd_sink_signals[SIGNAL_REMOVE_FLUSH] =
- g_signal_new ("remove-flush", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiFdSinkClass,
- remove_flush), NULL, NULL, gst_multi_fd_sink_marshal_VOID__INT,
- G_TYPE_NONE, 1, G_TYPE_INT);
- /**
- * GstMultiFdSink::clear:
- * @gstmultifdsink: the multifdsink element to emit this signal on
- *
- * Remove all file descriptors from multifdsink. Since multifdsink did not
- * open fd's itself, it does not explicitly close the fd. The application
- * should do so by connecting to the client-fd-removed callback.
- */
- gst_multi_fd_sink_signals[SIGNAL_CLEAR] =
- g_signal_new ("clear", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiFdSinkClass,
- clear), NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
-
- /**
- * GstMultiFdSink::get-stats:
- * @gstmultifdsink: the multifdsink element to emit this signal on
- * @fd: the file descriptor to get stats of from multifdsink
- *
- * Get statistics about @fd. This function returns a GValueArray to ease
- * automatic wrapping for bindings.
- *
- * Returns: a GValueArray with the statistics. The array contains guint64
- * values that represent respectively: total number of bytes sent, time
- * when the client was added, time when the client was
- * disconnected/removed, time the client is/was active, last activity
- * time (in epoch seconds), number of buffers dropped.
- * All times are expressed in nanoseconds (GstClockTime).
- * The array can be 0-length if the client was not found.
- */
- gst_multi_fd_sink_signals[SIGNAL_GET_STATS] =
- g_signal_new ("get-stats", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GstMultiFdSinkClass,
- get_stats), NULL, NULL, gst_multi_fd_sink_marshal_BOXED__INT,
- G_TYPE_VALUE_ARRAY, 1, G_TYPE_INT);
-
- /**
- * GstMultiFdSink::client-added:
- * @gstmultifdsink: the multifdsink element that emitted this signal
- * @fd: the file descriptor that was added to multifdsink
- *
- * The given file descriptor was added to multifdsink. This signal will
- * be emitted from the streaming thread so application should be prepared
- * for that.
- */
- gst_multi_fd_sink_signals[SIGNAL_CLIENT_ADDED] =
- g_signal_new ("client-added", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstMultiFdSinkClass, client_added),
- NULL, NULL, gst_multi_fd_sink_marshal_VOID__INT, G_TYPE_NONE, 1,
- G_TYPE_INT);
- /**
- * GstMultiFdSink::client-removed:
- * @gstmultifdsink: the multifdsink element that emitted this signal
- * @fd: the file descriptor that is to be removed from multifdsink
- * @status: the reason why the client was removed
- *
- * The given file descriptor is about to be removed from multifdsink. This
- * signal will be emitted from the streaming thread so applications should
- * be prepared for that.
- *
- * @gstmultifdsink still holds a handle to @fd so it is possible to call
- * the get-stats signal from this callback. For the same reason it is
- * not safe to close() and reuse @fd in this callback.
- */
- gst_multi_fd_sink_signals[SIGNAL_CLIENT_REMOVED] =
- g_signal_new ("client-removed", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstMultiFdSinkClass,
- client_removed), NULL, NULL, gst_multi_fd_sink_marshal_VOID__INT_ENUM,
- G_TYPE_NONE, 2, G_TYPE_INT, GST_TYPE_CLIENT_STATUS);
- /**
- * GstMultiFdSink::client-fd-removed:
- * @gstmultifdsink: the multifdsink element that emitted this signal
- * @fd: the file descriptor that was removed from multifdsink
- *
- * The given file descriptor was removed from multifdsink. This signal will
- * be emitted from the streaming thread so applications should be prepared
- * for that.
- *
- * In this callback, @gstmultifdsink has removed all the information
- * associated with @fd and it is therefore not possible to call get-stats
- * with @fd. It is however safe to close() and reuse @fd in the callback.
- *
- * Since: 0.10.7
- */
- gst_multi_fd_sink_signals[SIGNAL_CLIENT_FD_REMOVED] =
- g_signal_new ("client-fd-removed", G_TYPE_FROM_CLASS (klass),
- G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstMultiFdSinkClass,
- client_fd_removed), NULL, NULL, gst_multi_fd_sink_marshal_VOID__INT,
- G_TYPE_NONE, 1, G_TYPE_INT);
-
- gst_element_class_add_pad_template (gstelement_class,
- gst_static_pad_template_get (&sinktemplate));
-
- gst_element_class_set_details_simple (gstelement_class,
- "Multi filedescriptor sink", "Sink/Network",
- "Send data to multiple filedescriptors",
- "Thomas Vander Stichele <thomas at apestaart dot org>, "
- "Wim Taymans <wim@fluendo.com>");
-
- gstelement_class->change_state =
- GST_DEBUG_FUNCPTR (gst_multi_fd_sink_change_state);
-
- gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_render);
-
- klass->add = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_add);
- klass->add_full = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_add_full);
- klass->remove = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_remove);
- klass->remove_flush = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_remove_flush);
- klass->clear = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_clear);
- klass->get_stats = GST_DEBUG_FUNCPTR (gst_multi_fd_sink_get_stats);
-
- GST_DEBUG_CATEGORY_INIT (multifdsink_debug, "multifdsink", 0, "FD sink");
-}
-
-static void
-gst_multi_fd_sink_init (GstMultiFdSink * this)
-{
- GST_OBJECT_FLAG_UNSET (this, GST_MULTI_FD_SINK_OPEN);
-
- this->mode = DEFAULT_MODE;
-
- CLIENTS_LOCK_INIT (this);
- this->clients = NULL;
- this->fd_hash = g_hash_table_new (g_int_hash, g_int_equal);
-
- this->bufqueue = g_array_new (FALSE, TRUE, sizeof (GstBuffer *));
- this->unit_type = DEFAULT_UNIT_TYPE;
- this->units_max = DEFAULT_UNITS_MAX;
- this->units_soft_max = DEFAULT_UNITS_SOFT_MAX;
- this->time_min = DEFAULT_TIME_MIN;
- this->bytes_min = DEFAULT_BYTES_MIN;
- this->buffers_min = DEFAULT_BUFFERS_MIN;
- this->recover_policy = DEFAULT_RECOVER_POLICY;
-
- this->timeout = DEFAULT_TIMEOUT;
- this->def_sync_method = DEFAULT_SYNC_METHOD;
- this->def_burst_unit = DEFAULT_BURST_UNIT;
- this->def_burst_value = DEFAULT_BURST_VALUE;
-
- this->qos_dscp = DEFAULT_QOS_DSCP;
- this->handle_read = DEFAULT_HANDLE_READ;
-
- this->resend_streamheader = DEFAULT_RESEND_STREAMHEADER;
-
- this->header_flags = 0;
-}
-
-static void
-gst_multi_fd_sink_finalize (GObject * object)
-{
- GstMultiFdSink *this;
-
- this = GST_MULTI_FD_SINK (object);
-
- CLIENTS_LOCK_CLEAR (this);
- g_hash_table_destroy (this->fd_hash);
- g_array_free (this->bufqueue, TRUE);
-
- G_OBJECT_CLASS (parent_class)->finalize (object);
-}
-
-static gint
-setup_dscp_client (GstMultiFdSink * sink, GstTCPClient * client)
-{
- gint tos;
- gint ret;
- union gst_sockaddr
- {
- struct sockaddr sa;
- struct sockaddr_in6 sa_in6;
- struct sockaddr_storage sa_stor;
- } sa;
- socklen_t slen = sizeof (sa);
- gint af;
-
- /* don't touch */
- if (sink->qos_dscp < 0)
- return 0;
-
- if ((ret = getsockname (client->fd.fd, &sa.sa, &slen)) < 0) {
- GST_DEBUG_OBJECT (sink, "could not get sockname: %s", g_strerror (errno));
- return ret;
- }
-
- af = sa.sa.sa_family;
-
- /* if this is an IPv4-mapped address then do IPv4 QoS */
- if (af == AF_INET6) {
-
- GST_DEBUG_OBJECT (sink, "check IP6 socket");
- if (IN6_IS_ADDR_V4MAPPED (&(sa.sa_in6.sin6_addr))) {
- GST_DEBUG_OBJECT (sink, "mapped to IPV4");
- af = AF_INET;
- }
- }
-
- /* extract and shift 6 bits of the DSCP */
- tos = (sink->qos_dscp & 0x3f) << 2;
-
- switch (af) {
- case AF_INET:
- ret = setsockopt (client->fd.fd, IPPROTO_IP, IP_TOS, &tos, sizeof (tos));
- break;
- case AF_INET6:
-#ifdef IPV6_TCLASS
- ret =
- setsockopt (client->fd.fd, IPPROTO_IPV6, IPV6_TCLASS, &tos,
- sizeof (tos));
- break;
-#endif
- default:
- ret = 0;
- GST_ERROR_OBJECT (sink, "unsupported AF");
- break;
- }
- if (ret)
- GST_DEBUG_OBJECT (sink, "could not set DSCP: %s", g_strerror (errno));
-
- return ret;
-}
-
-
-static void
-setup_dscp (GstMultiFdSink * sink)
-{
- GList *clients, *next;
-
- CLIENTS_LOCK (sink);
- for (clients = sink->clients; clients; clients = next) {
- GstTCPClient *client;
-
- client = (GstTCPClient *) clients->data;
- next = g_list_next (clients);
-
- setup_dscp_client (sink, client);
- }
- CLIENTS_UNLOCK (sink);
-}
-
-/* "add-full" signal implementation */
-void
-gst_multi_fd_sink_add_full (GstMultiFdSink * sink, int fd,
- GstSyncMethod sync_method, GstTCPUnitType min_unit, guint64 min_value,
- GstTCPUnitType max_unit, guint64 max_value)
-{
- GstTCPClient *client;
- GList *clink;
- GTimeVal now;
- gint flags;
- struct stat statbuf;
-
- GST_DEBUG_OBJECT (sink, "[fd %5d] adding client, sync_method %d, "
- "min_unit %d, min_value %" G_GUINT64_FORMAT
- ", max_unit %d, max_value %" G_GUINT64_FORMAT, fd, sync_method,
- min_unit, min_value, max_unit, max_value);
-
- /* do limits check if we can */
- if (min_unit == max_unit) {
- if (max_value != -1 && min_value != -1 && max_value < min_value)
- goto wrong_limits;
- }
-
- /* create client datastructure */
- client = g_new0 (GstTCPClient, 1);
- client->fd.fd = fd;
- client->status = GST_CLIENT_STATUS_OK;
- client->bufpos = -1;
- client->flushcount = -1;
- client->bufoffset = 0;
- client->sending = NULL;
- client->bytes_sent = 0;
- client->dropped_buffers = 0;
- client->avg_queue_size = 0;
- client->first_buffer_ts = GST_CLOCK_TIME_NONE;
- client->last_buffer_ts = GST_CLOCK_TIME_NONE;
- client->new_connection = TRUE;
- client->burst_min_unit = min_unit;
- client->burst_min_value = min_value;
- client->burst_max_unit = max_unit;
- client->burst_max_value = max_value;
- client->sync_method = sync_method;
- client->currently_removing = FALSE;
-
- /* update start time */
- g_get_current_time (&now);
- client->connect_time = GST_TIMEVAL_TO_TIME (now);
- client->disconnect_time = 0;
- /* set last activity time to connect time */
- client->last_activity_time = client->connect_time;
-
- CLIENTS_LOCK (sink);
-
- /* check the hash to find a duplicate fd */
- clink = g_hash_table_lookup (sink->fd_hash, &client->fd.fd);
- if (clink != NULL)
- goto duplicate;
-
- /* we can add the fd now */
- clink = sink->clients = g_list_prepend (sink->clients, client);
- g_hash_table_insert (sink->fd_hash, &client->fd.fd, clink);
- sink->clients_cookie++;
-
- /* set the socket to non blocking */
- if (fcntl (fd, F_SETFL, O_NONBLOCK) < 0) {
- GST_ERROR_OBJECT (sink, "failed to make socket %d non-blocking: %s", fd,
- g_strerror (errno));
- }
-
- /* we always read from a client */
- gst_poll_add_fd (sink->fdset, &client->fd);
-
- /* we don't try to read from write only fds */
- if (sink->handle_read) {
- flags = fcntl (fd, F_GETFL, 0);
- if ((flags & O_ACCMODE) != O_WRONLY) {
- gst_poll_fd_ctl_read (sink->fdset, &client->fd, TRUE);
- }
- }
- /* figure out the mode, can't use send() for non sockets */
- if (fstat (fd, &statbuf) == 0 && S_ISSOCK (statbuf.st_mode)) {
- client->is_socket = TRUE;
- setup_dscp_client (sink, client);
- }
-
- gst_poll_restart (sink->fdset);
-
- CLIENTS_UNLOCK (sink);
-
- g_signal_emit (G_OBJECT (sink),
- gst_multi_fd_sink_signals[SIGNAL_CLIENT_ADDED], 0, fd);
-
- return;
-
- /* errors */
-wrong_limits:
- {
- GST_WARNING_OBJECT (sink,
- "[fd %5d] wrong values min =%" G_GUINT64_FORMAT ", max=%"
- G_GUINT64_FORMAT ", unit %d specified when adding client", fd,
- min_value, max_value, min_unit);
- return;
- }
-duplicate:
- {
- client->status = GST_CLIENT_STATUS_DUPLICATE;
- CLIENTS_UNLOCK (sink);
- GST_WARNING_OBJECT (sink, "[fd %5d] duplicate client found, refusing", fd);
- g_signal_emit (G_OBJECT (sink),
- gst_multi_fd_sink_signals[SIGNAL_CLIENT_REMOVED], 0, fd,
- client->status);
- g_free (client);
- return;
- }
-}
-
-/* "add" signal implementation */
-void
-gst_multi_fd_sink_add (GstMultiFdSink * sink, int fd)
-{
- gst_multi_fd_sink_add_full (sink, fd, sink->def_sync_method,
- sink->def_burst_unit, sink->def_burst_value, sink->def_burst_unit, -1);
-}
-
-/* "remove" signal implementation */
-void
-gst_multi_fd_sink_remove (GstMultiFdSink * sink, int fd)
-{
- GList *clink;
-
- GST_DEBUG_OBJECT (sink, "[fd %5d] removing client", fd);
-
- CLIENTS_LOCK (sink);
- clink = g_hash_table_lookup (sink->fd_hash, &fd);
- if (clink != NULL) {
- GstTCPClient *client = (GstTCPClient *) clink->data;
-
- if (client->status != GST_CLIENT_STATUS_OK) {
- GST_INFO_OBJECT (sink,
- "[fd %5d] Client already disconnecting with status %d",
- fd, client->status);
- goto done;
- }
-
- client->status = GST_CLIENT_STATUS_REMOVED;
- gst_multi_fd_sink_remove_client_link (sink, clink);
- gst_poll_restart (sink->fdset);
- } else {
- GST_WARNING_OBJECT (sink, "[fd %5d] no client with this fd found!", fd);
- }
-
-done:
- CLIENTS_UNLOCK (sink);
-}
-
-/* "remove-flush" signal implementation */
-void
-gst_multi_fd_sink_remove_flush (GstMultiFdSink * sink, int fd)
-{
- GList *clink;
-
- GST_DEBUG_OBJECT (sink, "[fd %5d] flushing client", fd);
-
- CLIENTS_LOCK (sink);
- clink = g_hash_table_lookup (sink->fd_hash, &fd);
- if (clink != NULL) {
- GstTCPClient *client = (GstTCPClient *) clink->data;
-
- if (client->status != GST_CLIENT_STATUS_OK) {
- GST_INFO_OBJECT (sink,
- "[fd %5d] Client already disconnecting with status %d",
- fd, client->status);
- goto done;
- }
-
- /* take the position of the client as the number of buffers left to flush.
- * If the client was at position -1, we flush 0 buffers, 0 == flush 1
- * buffer, etc... */
- client->flushcount = client->bufpos + 1;
- /* mark client as flushing. We can not remove the client right away because
- * it might have some buffers to flush in the ->sending queue. */
- client->status = GST_CLIENT_STATUS_FLUSHING;
- } else {
- GST_WARNING_OBJECT (sink, "[fd %5d] no client with this fd found!", fd);
- }
-done:
- CLIENTS_UNLOCK (sink);
-}
-
-/* can be called both through the signal (i.e. from any thread) or when
- * stopping, after the writing thread has shut down */
-void
-gst_multi_fd_sink_clear (GstMultiFdSink * sink)
-{
- GList *clients, *next;
- guint32 cookie;
-
- GST_DEBUG_OBJECT (sink, "clearing all clients");
-
- CLIENTS_LOCK (sink);
-restart:
- cookie = sink->clients_cookie;
- for (clients = sink->clients; clients; clients = next) {
- GstTCPClient *client;
-
- if (cookie != sink->clients_cookie) {
- GST_DEBUG_OBJECT (sink, "cookie changed while removing all clients");
- goto restart;
- }
-
- client = (GstTCPClient *) clients->data;
- next = g_list_next (clients);
-
- client->status = GST_CLIENT_STATUS_REMOVED;
- gst_multi_fd_sink_remove_client_link (sink, clients);
- }
- gst_poll_restart (sink->fdset);
- CLIENTS_UNLOCK (sink);
-}
-
-/* "get-stats" signal implementation
- * the array returned contains:
- *
- * guint64 : bytes_sent
- * guint64 : connect time (in nanoseconds, since Epoch)
- * guint64 : disconnect time (in nanoseconds, since Epoch)
- * guint64 : time the client is/was connected (in nanoseconds)
- * guint64 : last activity time (in nanoseconds, since Epoch)
- * guint64 : buffers dropped due to recovery
- * guint64 : timestamp of the first buffer sent (in nanoseconds)
- * guint64 : timestamp of the last buffer sent (in nanoseconds)
- */
-GValueArray *
-gst_multi_fd_sink_get_stats (GstMultiFdSink * sink, int fd)
-{
- GstTCPClient *client;
- GValueArray *result = NULL;
- GList *clink;
-
- CLIENTS_LOCK (sink);
- clink = g_hash_table_lookup (sink->fd_hash, &fd);
- if (clink == NULL)
- goto noclient;
-
- client = (GstTCPClient *) clink->data;
- if (client != NULL) {
- GValue value = { 0 };
- guint64 interval;
-
- result = g_value_array_new (7);
-
- g_value_init (&value, G_TYPE_UINT64);
- g_value_set_uint64 (&value, client->bytes_sent);
- result = g_value_array_append (result, &value);
- g_value_unset (&value);
- g_value_init (&value, G_TYPE_UINT64);
- g_value_set_uint64 (&value, client->connect_time);
- result = g_value_array_append (result, &value);
- g_value_unset (&value);
- if (client->disconnect_time == 0) {
- GTimeVal nowtv;
-
- g_get_current_time (&nowtv);
-
- interval = GST_TIMEVAL_TO_TIME (nowtv) - client->connect_time;
- } else {
- interval = client->disconnect_time - client->connect_time;
- }
- g_value_init (&value, G_TYPE_UINT64);
- g_value_set_uint64 (&value, client->disconnect_time);
- result = g_value_array_append (result, &value);
- g_value_unset (&value);
- g_value_init (&value, G_TYPE_UINT64);
- g_value_set_uint64 (&value, interval);
- result = g_value_array_append (result, &value);
- g_value_unset (&value);
- g_value_init (&value, G_TYPE_UINT64);
- g_value_set_uint64 (&value, client->last_activity_time);
- result = g_value_array_append (result, &value);
- g_value_unset (&value);
- g_value_init (&value, G_TYPE_UINT64);
- g_value_set_uint64 (&value, client->dropped_buffers);
- result = g_value_array_append (result, &value);
- g_value_unset (&value);
- g_value_init (&value, G_TYPE_UINT64);
- g_value_set_uint64 (&value, client->first_buffer_ts);
- result = g_value_array_append (result, &value);
- g_value_unset (&value);
- g_value_init (&value, G_TYPE_UINT64);
- g_value_set_uint64 (&value, client->last_buffer_ts);
- result = g_value_array_append (result, &value);
- }
-
-noclient:
- CLIENTS_UNLOCK (sink);
-
- /* python doesn't like a NULL pointer yet */
- if (result == NULL) {
- GST_WARNING_OBJECT (sink, "[fd %5d] no client with this found!", fd);
- result = g_value_array_new (0);
- }
-
- return result;
-}
-
-/* should be called with the clientslock helt.
- * Note that we don't close the fd as we didn't open it in the first
- * place. An application should connect to the client-fd-removed signal and
- * close the fd itself.
- */
-static void
-gst_multi_fd_sink_remove_client_link (GstMultiFdSink * sink, GList * link)
-{
- int fd;
- GTimeVal now;
- GstTCPClient *client = (GstTCPClient *) link->data;
- GstMultiFdSinkClass *fclass;
-
- fclass = GST_MULTI_FD_SINK_GET_CLASS (sink);
-
- fd = client->fd.fd;
-
- if (client->currently_removing) {
- GST_WARNING_OBJECT (sink, "[fd %5d] client is already being removed", fd);
- return;
- } else {
- client->currently_removing = TRUE;
- }
-
- /* FIXME: if we keep track of ip we can log it here and signal */
- switch (client->status) {
- case GST_CLIENT_STATUS_OK:
- GST_WARNING_OBJECT (sink, "[fd %5d] removing client %p for no reason",
- fd, client);
- break;
- case GST_CLIENT_STATUS_CLOSED:
- GST_DEBUG_OBJECT (sink, "[fd %5d] removing client %p because of close",
- fd, client);
- break;
- case GST_CLIENT_STATUS_REMOVED:
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] removing client %p because the app removed it", fd, client);
- break;
- case GST_CLIENT_STATUS_SLOW:
- GST_INFO_OBJECT (sink,
- "[fd %5d] removing client %p because it was too slow", fd, client);
- break;
- case GST_CLIENT_STATUS_ERROR:
- GST_WARNING_OBJECT (sink,
- "[fd %5d] removing client %p because of error", fd, client);
- break;
- case GST_CLIENT_STATUS_FLUSHING:
- default:
- GST_WARNING_OBJECT (sink,
- "[fd %5d] removing client %p with invalid reason %d", fd, client,
- client->status);
- break;
- }
-
- gst_poll_remove_fd (sink->fdset, &client->fd);
-
- g_get_current_time (&now);
- client->disconnect_time = GST_TIMEVAL_TO_TIME (now);
-
- /* free client buffers */
- g_slist_foreach (client->sending, (GFunc) gst_mini_object_unref, NULL);
- g_slist_free (client->sending);
- client->sending = NULL;
-
- if (client->caps)
- gst_caps_unref (client->caps);
- client->caps = NULL;
-
- /* unlock the mutex before signaling because the signal handler
- * might query some properties */
- CLIENTS_UNLOCK (sink);
-
- g_signal_emit (G_OBJECT (sink),
- gst_multi_fd_sink_signals[SIGNAL_CLIENT_REMOVED], 0, fd, client->status);
-
- /* lock again before we remove the client completely */
- CLIENTS_LOCK (sink);
-
- /* fd cannot be reused in the above signal callback so we can safely
- * remove it from the hashtable here */
- if (!g_hash_table_remove (sink->fd_hash, &client->fd.fd)) {
- GST_WARNING_OBJECT (sink,
- "[fd %5d] error removing client %p from hash", client->fd.fd, client);
- }
- /* after releasing the lock above, the link could be invalid, more
- * precisely, the next and prev pointers could point to invalid list
- * links. One optimisation could be to add a cookie to the linked list
- * and take a shortcut when it did not change between unlocking and locking
- * our mutex. For now we just walk the list again. */
- sink->clients = g_list_remove (sink->clients, client);
- sink->clients_cookie++;
-
- if (fclass->removed)
- fclass->removed (sink, client->fd.fd);
-
- g_free (client);
- CLIENTS_UNLOCK (sink);
-
- /* and the fd is really gone now */
- g_signal_emit (G_OBJECT (sink),
- gst_multi_fd_sink_signals[SIGNAL_CLIENT_FD_REMOVED], 0, fd);
-
- CLIENTS_LOCK (sink);
-}
-
-/* handle a read on a client fd,
- * which either indicates a close or should be ignored
- * returns FALSE if some error occured or the client closed. */
-static gboolean
-gst_multi_fd_sink_handle_client_read (GstMultiFdSink * sink,
- GstTCPClient * client)
-{
- int avail, fd;
- gboolean ret;
-
- fd = client->fd.fd;
-
- if (ioctl (fd, FIONREAD, &avail) < 0)
- goto ioctl_failed;
-
- GST_DEBUG_OBJECT (sink, "[fd %5d] select reports client read of %d bytes",
- fd, avail);
-
- ret = TRUE;
-
- if (avail == 0) {
- /* client sent close, so remove it */
- GST_DEBUG_OBJECT (sink, "[fd %5d] client asked for close, removing", fd);
- client->status = GST_CLIENT_STATUS_CLOSED;
- ret = FALSE;
- } else if (avail < 0) {
- GST_WARNING_OBJECT (sink, "[fd %5d] avail < 0, removing", fd);
- client->status = GST_CLIENT_STATUS_ERROR;
- ret = FALSE;
- } else {
- guint8 dummy[512];
- gint nread;
-
- /* just Read 'n' Drop, could also just drop the client as it's not supposed
- * to write to us except for closing the socket, I guess it's because we
- * like to listen to our customers. */
- do {
- /* this is the maximum we can read */
- gint to_read = MIN (avail, 512);
-
- GST_DEBUG_OBJECT (sink, "[fd %5d] client wants us to read %d bytes",
- fd, to_read);
-
- nread = read (fd, dummy, to_read);
- if (nread < -1) {
- GST_WARNING_OBJECT (sink, "[fd %5d] could not read %d bytes: %s (%d)",
- fd, to_read, g_strerror (errno), errno);
- client->status = GST_CLIENT_STATUS_ERROR;
- ret = FALSE;
- break;
- } else if (nread == 0) {
- GST_WARNING_OBJECT (sink, "[fd %5d] 0 bytes in read, removing", fd);
- client->status = GST_CLIENT_STATUS_ERROR;
- ret = FALSE;
- break;
- }
- avail -= nread;
- }
- while (avail > 0);
- }
- return ret;
-
- /* ERRORS */
-ioctl_failed:
- {
- GST_WARNING_OBJECT (sink, "[fd %5d] ioctl failed: %s (%d)",
- fd, g_strerror (errno), errno);
- client->status = GST_CLIENT_STATUS_ERROR;
- return FALSE;
- }
-}
-
-static gboolean
-is_sync_frame (GstMultiFdSink * sink, GstBuffer * buffer)
-{
- if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT)) {
- return FALSE;
- } else if (!GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_HEADER)) {
- return TRUE;
- }
-
- return FALSE;
-}
-
-/* queue the given buffer for the given client */
-static gboolean
-gst_multi_fd_sink_client_queue_buffer (GstMultiFdSink * sink,
- GstTCPClient * client, GstBuffer * buffer)
-{
- GstCaps *caps;
-
- /* TRUE: send them if the new caps have them */
- gboolean send_streamheader = FALSE;
- GstStructure *s;
-
- /* before we queue the buffer, we check if we need to queue streamheader
- * buffers (because it's a new client, or because they changed) */
- caps = gst_pad_get_current_caps (GST_BASE_SINK_PAD (sink));
-
- if (!client->caps) {
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] no previous caps for this client, send streamheader",
- client->fd.fd);
- send_streamheader = TRUE;
- client->caps = gst_caps_ref (caps);
- } else {
- /* there were previous caps recorded, so compare */
- if (!gst_caps_is_equal (caps, client->caps)) {
- const GValue *sh1, *sh2;
-
- /* caps are not equal, but could still have the same streamheader */
- s = gst_caps_get_structure (caps, 0);
- if (!gst_structure_has_field (s, "streamheader")) {
- /* no new streamheader, so nothing new to send */
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] new caps do not have streamheader, not sending",
- client->fd.fd);
- } else {
- /* there is a new streamheader */
- s = gst_caps_get_structure (client->caps, 0);
- if (!gst_structure_has_field (s, "streamheader")) {
- /* no previous streamheader, so send the new one */
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] previous caps did not have streamheader, sending",
- client->fd.fd);
- send_streamheader = TRUE;
- } else {
- /* both old and new caps have streamheader set */
- if (!sink->resend_streamheader) {
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] asked to not resend the streamheader, not sending",
- client->fd.fd);
- send_streamheader = FALSE;
- } else {
- sh1 = gst_structure_get_value (s, "streamheader");
- s = gst_caps_get_structure (caps, 0);
- sh2 = gst_structure_get_value (s, "streamheader");
- if (gst_value_compare (sh1, sh2) != GST_VALUE_EQUAL) {
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] new streamheader different from old, sending",
- client->fd.fd);
- send_streamheader = TRUE;
- }
- }
- }
- }
- }
- /* Replace the old caps */
- gst_caps_unref (client->caps);
- client->caps = gst_caps_ref (caps);
- }
-
- if (G_UNLIKELY (send_streamheader)) {
- const GValue *sh;
- GArray *buffers;
- int i;
-
- GST_LOG_OBJECT (sink,
- "[fd %5d] sending streamheader from caps %" GST_PTR_FORMAT,
- client->fd.fd, caps);
- s = gst_caps_get_structure (caps, 0);
- if (!gst_structure_has_field (s, "streamheader")) {
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] no new streamheader, so nothing to send", client->fd.fd);
- } else {
- GST_LOG_OBJECT (sink,
- "[fd %5d] sending streamheader from caps %" GST_PTR_FORMAT,
- client->fd.fd, caps);
- sh = gst_structure_get_value (s, "streamheader");
- g_assert (G_VALUE_TYPE (sh) == GST_TYPE_ARRAY);
- buffers = g_value_peek_pointer (sh);
- GST_DEBUG_OBJECT (sink, "%d streamheader buffers", buffers->len);
- for (i = 0; i < buffers->len; ++i) {
- GValue *bufval;
- GstBuffer *buffer;
-
- bufval = &g_array_index (buffers, GValue, i);
- g_assert (G_VALUE_TYPE (bufval) == GST_TYPE_BUFFER);
- buffer = g_value_peek_pointer (bufval);
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] queueing streamheader buffer of length %" G_GSIZE_FORMAT,
- client->fd.fd, gst_buffer_get_size (buffer));
- gst_buffer_ref (buffer);
-
- client->sending = g_slist_append (client->sending, buffer);
- }
- }
- }
-
- gst_caps_unref (caps);
- caps = NULL;
-
- GST_LOG_OBJECT (sink, "[fd %5d] queueing buffer of length %" G_GSIZE_FORMAT,
- client->fd.fd, gst_buffer_get_size (buffer));
-
- gst_buffer_ref (buffer);
- client->sending = g_slist_append (client->sending, buffer);
-
- return TRUE;
-}
-
-/* find the keyframe in the list of buffers starting the
- * search from @idx. @direction as -1 will search backwards,
- * 1 will search forwards.
- * Returns: the index or -1 if there is no keyframe after idx.
- */
-static gint
-find_syncframe (GstMultiFdSink * sink, gint idx, gint direction)
-{
- gint i, len, result;
-
- /* take length of queued buffers */
- len = sink->bufqueue->len;
-
- /* assume we don't find a keyframe */
- result = -1;
-
- /* then loop over all buffers to find the first keyframe */
- for (i = idx; i >= 0 && i < len; i += direction) {
- GstBuffer *buf;
-
- buf = g_array_index (sink->bufqueue, GstBuffer *, i);
- if (is_sync_frame (sink, buf)) {
- GST_LOG_OBJECT (sink, "found keyframe at %d from %d, direction %d",
- i, idx, direction);
- result = i;
- break;
- }
- }
- return result;
-}
-
-#define find_next_syncframe(s,i) find_syncframe(s,i,1)
-#define find_prev_syncframe(s,i) find_syncframe(s,i,-1)
-
-/* Get the number of buffers from the buffer queue needed to satisfy
- * the maximum max in the configured units.
- * If units are not BUFFERS, and there are insufficient buffers in the
- * queue to satify the limit, return len(queue) + 1 */
-static gint
-get_buffers_max (GstMultiFdSink * sink, gint64 max)
-{
- switch (sink->unit_type) {
- case GST_TCP_UNIT_TYPE_BUFFERS:
- return max;
- case GST_TCP_UNIT_TYPE_TIME:
- {
- GstBuffer *buf;
- int i;
- int len;
- gint64 diff;
- GstClockTime first = GST_CLOCK_TIME_NONE;
-
- len = sink->bufqueue->len;
-
- for (i = 0; i < len; i++) {
- buf = g_array_index (sink->bufqueue, GstBuffer *, i);
- if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
- if (first == -1)
- first = GST_BUFFER_TIMESTAMP (buf);
-
- diff = first - GST_BUFFER_TIMESTAMP (buf);
-
- if (diff > max)
- return i + 1;
- }
- }
- return len + 1;
- }
- case GST_TCP_UNIT_TYPE_BYTES:
- {
- GstBuffer *buf;
- int i;
- int len;
- gint acc = 0;
-
- len = sink->bufqueue->len;
-
- for (i = 0; i < len; i++) {
- buf = g_array_index (sink->bufqueue, GstBuffer *, i);
- acc += gst_buffer_get_size (buf);
-
- if (acc > max)
- return i + 1;
- }
- return len + 1;
- }
- default:
- return max;
- }
-}
-
-/* find the positions in the buffer queue where *_min and *_max
- * is satisfied
- */
-/* count the amount of data in the buffers and return the index
- * that satifies the given limits.
- *
- * Returns: index @idx in the buffer queue so that the given limits are
- * satisfied. TRUE if all the limits could be satisfied, FALSE if not
- * enough data was in the queue.
- *
- * FIXME, this code might now work if any of the units is in buffers...
- */
-static gboolean
-find_limits (GstMultiFdSink * sink,
- gint * min_idx, gint bytes_min, gint buffers_min, gint64 time_min,
- gint * max_idx, gint bytes_max, gint buffers_max, gint64 time_max)
-{
- GstClockTime first, time;
- gint i, len, bytes;
- gboolean result, max_hit;
-
- /* take length of queue */
- len = sink->bufqueue->len;
-
- /* this must hold */
- g_assert (len > 0);
-
- GST_LOG_OBJECT (sink,
- "bytes_min %d, buffers_min %d, time_min %" GST_TIME_FORMAT
- ", bytes_max %d, buffers_max %d, time_max %" GST_TIME_FORMAT, bytes_min,
- buffers_min, GST_TIME_ARGS (time_min), bytes_max, buffers_max,
- GST_TIME_ARGS (time_max));
-
- /* do the trivial buffer limit test */
- if (buffers_min != -1 && len < buffers_min) {
- *min_idx = len - 1;
- *max_idx = len - 1;
- return FALSE;
- }
-
- result = FALSE;
- /* else count bytes and time */
- first = -1;
- bytes = 0;
- /* unset limits */
- *min_idx = -1;
- *max_idx = -1;
- max_hit = FALSE;
-
- i = 0;
- /* loop through the buffers, when a limit is ok, mark it
- * as -1, we have at least one buffer in the queue. */
- do {
- GstBuffer *buf;
-
- /* if we checked all min limits, update result */
- if (bytes_min == -1 && time_min == -1 && *min_idx == -1) {
- /* don't go below 0 */
- *min_idx = MAX (i - 1, 0);
- }
- /* if we reached one max limit break out */
- if (max_hit) {
- /* i > 0 when we get here, we subtract one to get the position
- * of the previous buffer. */
- *max_idx = i - 1;
- /* we have valid complete result if we found a min_idx too */
- result = *min_idx != -1;
- break;
- }
- buf = g_array_index (sink->bufqueue, GstBuffer *, i);
-
- bytes += gst_buffer_get_size (buf);
-
- /* take timestamp and save for the base first timestamp */
- if ((time = GST_BUFFER_TIMESTAMP (buf)) != -1) {
- GST_LOG_OBJECT (sink, "Ts %" GST_TIME_FORMAT " on buffer",
- GST_TIME_ARGS (time));
- if (first == -1)
- first = time;
-
- /* increase max usage if we did not fill enough. Note that
- * buffers are sorted from new to old, so the first timestamp is
- * bigger than the next one. */
- if (time_min != -1 && first - time >= time_min)
- time_min = -1;
- if (time_max != -1 && first - time >= time_max)
- max_hit = TRUE;
- } else {
- GST_LOG_OBJECT (sink, "No timestamp on buffer");
- }
- /* time is OK or unknown, check and increase if not enough bytes */
- if (bytes_min != -1) {
- if (bytes >= bytes_min)
- bytes_min = -1;
- }
- if (bytes_max != -1) {
- if (bytes >= bytes_max) {
- max_hit = TRUE;
- }
- }
- i++;
- }
- while (i < len);
-
- /* if we did not hit the max or min limit, set to buffer size */
- if (*max_idx == -1)
- *max_idx = len - 1;
- /* make sure min does not exceed max */
- if (*min_idx == -1)
- *min_idx = *max_idx;
-
- return result;
-}
-
-/* parse the unit/value pair and assign it to the result value of the
- * right type, leave the other values untouched
- *
- * Returns: FALSE if the unit is unknown or undefined. TRUE otherwise.
- */
-static gboolean
-assign_value (GstTCPUnitType unit, guint64 value, gint * bytes, gint * buffers,
- GstClockTime * time)
-{
- gboolean res = TRUE;
-
- /* set only the limit of the given format to the given value */
- switch (unit) {
- case GST_TCP_UNIT_TYPE_BUFFERS:
- *buffers = (gint) value;
- break;
- case GST_TCP_UNIT_TYPE_TIME:
- *time = value;
- break;
- case GST_TCP_UNIT_TYPE_BYTES:
- *bytes = (gint) value;
- break;
- case GST_TCP_UNIT_TYPE_UNDEFINED:
- default:
- res = FALSE;
- break;
- }
- return res;
-}
-
-/* count the index in the buffer queue to satisfy the given unit
- * and value pair starting from buffer at index 0.
- *
- * Returns: TRUE if there was enough data in the queue to satisfy the
- * burst values. @idx contains the index in the buffer that contains enough
- * data to satisfy the limits or the last buffer in the queue when the
- * function returns FALSE.
- */
-static gboolean
-count_burst_unit (GstMultiFdSink * sink, gint * min_idx,
- GstTCPUnitType min_unit, guint64 min_value, gint * max_idx,
- GstTCPUnitType max_unit, guint64 max_value)
-{
- gint bytes_min = -1, buffers_min = -1;
- gint bytes_max = -1, buffers_max = -1;
- GstClockTime time_min = GST_CLOCK_TIME_NONE, time_max = GST_CLOCK_TIME_NONE;
-
- assign_value (min_unit, min_value, &bytes_min, &buffers_min, &time_min);
- assign_value (max_unit, max_value, &bytes_max, &buffers_max, &time_max);
-
- return find_limits (sink, min_idx, bytes_min, buffers_min, time_min,
- max_idx, bytes_max, buffers_max, time_max);
-}
-
-/* decide where in the current buffer queue this new client should start
- * receiving buffers from.
- * This function is called whenever a client is connected and has not yet
- * received a buffer.
- * If this returns -1, it means that we haven't found a good point to
- * start streaming from yet, and this function should be called again later
- * when more buffers have arrived.
- */
-static gint
-gst_multi_fd_sink_new_client (GstMultiFdSink * sink, GstTCPClient * client)
-{
- gint result;
-
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] new client, deciding where to start in queue", client->fd.fd);
- GST_DEBUG_OBJECT (sink, "queue is currently %d buffers long",
- sink->bufqueue->len);
- switch (client->sync_method) {
- case GST_SYNC_METHOD_LATEST:
- /* no syncing, we are happy with whatever the client is going to get */
- result = client->bufpos;
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] SYNC_METHOD_LATEST, position %d", client->fd.fd, result);
- break;
- case GST_SYNC_METHOD_NEXT_KEYFRAME:
- {
- /* if one of the new buffers (between client->bufpos and 0) in the queue
- * is a sync point, we can proceed, otherwise we need to keep waiting */
- GST_LOG_OBJECT (sink,
- "[fd %5d] new client, bufpos %d, waiting for keyframe", client->fd.fd,
- client->bufpos);
-
- result = find_prev_syncframe (sink, client->bufpos);
- if (result != -1) {
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] SYNC_METHOD_NEXT_KEYFRAME: result %d",
- client->fd.fd, result);
- break;
- }
-
- /* client is not on a syncbuffer, need to skip these buffers and
- * wait some more */
- GST_LOG_OBJECT (sink,
- "[fd %5d] new client, skipping buffer(s), no syncpoint found",
- client->fd.fd);
- client->bufpos = -1;
- break;
- }
- case GST_SYNC_METHOD_LATEST_KEYFRAME:
- {
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] SYNC_METHOD_LATEST_KEYFRAME", client->fd.fd);
-
- /* for new clients we initially scan the complete buffer queue for
- * a sync point when a buffer is added. If we don't find a keyframe,
- * we need to wait for the next keyframe and so we change the client's
- * sync method to GST_SYNC_METHOD_NEXT_KEYFRAME.
- */
- result = find_next_syncframe (sink, 0);
- if (result != -1) {
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] SYNC_METHOD_LATEST_KEYFRAME: result %d", client->fd.fd,
- result);
- break;
- }
-
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] SYNC_METHOD_LATEST_KEYFRAME: no keyframe found, "
- "switching to SYNC_METHOD_NEXT_KEYFRAME", client->fd.fd);
- /* throw client to the waiting state */
- client->bufpos = -1;
- /* and make client sync to next keyframe */
- client->sync_method = GST_SYNC_METHOD_NEXT_KEYFRAME;
- break;
- }
- case GST_SYNC_METHOD_BURST:
- {
- gboolean ok;
- gint max;
-
- /* move to the position where we satisfy the client's burst
- * parameters. If we could not satisfy the parameters because there
- * is not enough data, we just send what we have (which is in result).
- * We use the max value to limit the search
- */
- ok = count_burst_unit (sink, &result, client->burst_min_unit,
- client->burst_min_value, &max, client->burst_max_unit,
- client->burst_max_value);
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] SYNC_METHOD_BURST: burst_unit returned %d, result %d",
- client->fd.fd, ok, result);
-
- GST_LOG_OBJECT (sink, "min %d, max %d", result, max);
-
- /* we hit the max and it is below the min, use that then */
- if (max != -1 && max <= result) {
- result = MAX (max - 1, 0);
- GST_DEBUG_OBJECT (sink,
- "[fd %5d] SYNC_METHOD_BURST: result above max, taken down to %d",
- client->fd.fd, result);
- }
- break;
- }
- case GST_SYNC_METHOD_BURST_KEYFRAME:
- {
- gint min_idx, max_idx;
- gint next_syncframe, prev_syncframe;
-
- /* BURST_KEYFRAME:
- *
- * _always_ start sending a keyframe to the client. We first search
- * a keyframe between min/max limits. If there is none, we send it the
- * last keyframe before min. If there is none, the behaviour is like
- * NEXT_KEYFRAME.
- */
- /* gather burst limits */
- count_burst_unit (sink, &min_idx, client->burst_min_unit,
- client->burst_min_value, &max_idx, client->burst_max_unit,
- client->burst_max_value);
-
- GST_LOG_OBJECT (sink, "min %d, max %d", min_idx, max_idx);
-
- /* first find a keyframe after min_idx */
- next_syncframe = find_next_syncframe (sink, min_idx);
- if (next_syncframe != -1 && next_syncframe < max_idx) {
- /* we have a valid keyframe and it's below the max */
- GST_LOG_OBJECT (sink, "found keyframe in min/max limits");
- result = next_syncframe;
- break;
- }
-
- /* no valid keyframe, try to find one below min */
- prev_syncframe = find_prev_syncframe (sink, min_idx);
- if (prev_syncframe != -1) {
- GST_WARNING_OBJECT (sink,
- "using keyframe below min in BURST_KEYFRAME sync mode");
- result = prev_syncframe;
- break;
- }
-
- /* no prev keyframe or not enough data */
- GST_WARNING_OBJECT (sink,
- "no prev keyframe found in BURST_KEYFRAME sync mode, waiting for next");
-
- /* throw client to the waiting state */
- client->bufpos = -1;
- /* and make client sync to next keyframe */
- client->sync_method = GST_SYNC_METHOD_NEXT_KEYFRAME;
- result = -1;
- break;
- }
- case GST_SYNC_METHOD_BURST_WITH_KEYFRAME:
- {
- gint min_idx, max_idx;
- gint next_syncframe;
-
- /* BURST_WITH_KEYFRAME:
- *
- * try to start sending a keyframe to the client. We first search
- * a keyframe between min/max limits. If there is none, we send it the
- * amount of data up 'till min.
- */
- /* gather enough data to burst */
- count_burst_unit (sink, &min_idx, client->burst_min_unit,
- client->burst_min_value, &max_idx, client->burst_max_unit,
- client->burst_max_value);
-
- GST_LOG_OBJECT (sink, "min %d, max %d", min_idx, max_idx);
-
- /* first find a keyframe after min_idx */
- next_syncframe = find_next_syncframe (sink, min_idx);
- if (next_syncframe != -1 && next_syncframe < max_idx) {
- /* we have a valid keyframe and it's below the max */
- GST_LOG_OBJECT (sink, "found keyframe in min/max limits");
- result = next_syncframe;
- break;
- }
-
- /* no keyframe, send data from min_idx */
- GST_WARNING_OBJECT (sink, "using min in BURST_WITH_KEYFRAME sync mode");
-
- /* make sure we don't go over the max limit */
- if (max_idx != -1 && max_idx <= min_idx) {
- result = MAX (max_idx - 1, 0);
- } else {
- result = min_idx;
- }
-
- break;
- }
- default:
- g_warning ("unknown sync method %d", client->sync_method);
- result = client->bufpos;
- break;
- }
- return result;
-}
-
-/* Handle a write on a client,
- * which indicates a read request from a client.
- *
- * For each client we maintain a queue of GstBuffers that contain the raw bytes
- * we need to send to the client.
- *
- * We first check to see if we need to send streamheaders. If so, we queue them.
- *
- * Then we run into the main loop that tries to send as many buffers as
- * possible. It will first exhaust the client->sending queue and if the queue
- * is empty, it will pick a buffer from the global queue.
- *
- * Sending the buffers from the client->sending queue is basically writing
- * the bytes to the socket and maintaining a count of the bytes that were
- * sent. When the buffer is completely sent, it is removed from the
- * client->sending queue and we try to pick a new buffer for sending.
- *
- * When the sending returns a partial buffer we stop sending more data as
- * the next send operation could block.
- *
- * This functions returns FALSE if some error occured.
- */
-static gboolean
-gst_multi_fd_sink_handle_client_write (GstMultiFdSink * sink,
- GstTCPClient * client)
-{
- int fd = client->fd.fd;
- gboolean more;
- gboolean flushing;
- GstClockTime now;
- GTimeVal nowtv;
-
- g_get_current_time (&nowtv);
- now = GST_TIMEVAL_TO_TIME (nowtv);
-
- flushing = client->status == GST_CLIENT_STATUS_FLUSHING;
-
- more = TRUE;
- do {
- gint maxsize;
-
- if (!client->sending) {
- /* client is not working on a buffer */
- if (client->bufpos == -1) {
- /* client is too fast, remove from write queue until new buffer is
- * available */
- gst_poll_fd_ctl_write (sink->fdset, &client->fd, FALSE);
- /* if we flushed out all of the client buffers, we can stop */
- if (client->flushcount == 0)
- goto flushed;
-
- return TRUE;
- } else {
- /* client can pick a buffer from the global queue */
- GstBuffer *buf;
- GstClockTime timestamp;
-
- /* for new connections, we need to find a good spot in the
- * bufqueue to start streaming from */
- if (client->new_connection && !flushing) {
- gint position = gst_multi_fd_sink_new_client (sink, client);
-
- if (position >= 0) {
- /* we got a valid spot in the queue */
- client->new_connection = FALSE;
- client->bufpos = position;
- } else {
- /* cannot send data to this client yet */
- gst_poll_fd_ctl_write (sink->fdset, &client->fd, FALSE);
- return TRUE;
- }
- }
-
- /* we flushed all remaining buffers, no need to get a new one */
- if (client->flushcount == 0)
- goto flushed;
-
- /* grab buffer */
- buf = g_array_index (sink->bufqueue, GstBuffer *, client->bufpos);
- client->bufpos--;
-
- /* update stats */
- timestamp = GST_BUFFER_TIMESTAMP (buf);
- if (client->first_buffer_ts == GST_CLOCK_TIME_NONE)
- client->first_buffer_ts = timestamp;
- if (timestamp != -1)
- client->last_buffer_ts = timestamp;
-
- /* decrease flushcount */
- if (client->flushcount != -1)
- client->flushcount--;
-
- GST_LOG_OBJECT (sink, "[fd %5d] client %p at position %d",
- fd, client, client->bufpos);
-
- /* queueing a buffer will ref it */
- gst_multi_fd_sink_client_queue_buffer (sink, client, buf);
-
- /* need to start from the first byte for this new buffer */
- client->bufoffset = 0;
- }
- }
-
- /* see if we need to send something */
- if (client->sending) {
- ssize_t wrote;
- GstBuffer *head;
- GstMapInfo map;
-
- /* pick first buffer from list */
- head = GST_BUFFER (client->sending->data);
-
- gst_buffer_map (head, &map, GST_MAP_READ);
- maxsize = map.size - client->bufoffset;
-
- /* try to write the complete buffer */
-#ifdef MSG_NOSIGNAL
-#define FLAGS MSG_NOSIGNAL
-#else
-#define FLAGS 0
-#endif
- if (client->is_socket) {
- wrote = send (fd, map.data + client->bufoffset, maxsize, FLAGS);
- } else {
- wrote = write (fd, map.data + client->bufoffset, maxsize);
- }
- gst_buffer_unmap (head, &map);
-
- if (wrote < 0) {
- /* hmm error.. */
- if (errno == EAGAIN) {
- /* nothing serious, resource was unavailable, try again later */
- more = FALSE;
- } else if (errno == ECONNRESET) {
- goto connection_reset;
- } else {
- goto write_error;
- }
- } else {
- if (wrote < maxsize) {
- /* partial write means that the client cannot read more and we should
- * stop sending more */
- GST_LOG_OBJECT (sink,
- "partial write on %d of %" G_GSSIZE_FORMAT " bytes", fd, wrote);
- client->bufoffset += wrote;
- more = FALSE;
- } else {
- /* complete buffer was written, we can proceed to the next one */
- client->sending = g_slist_remove (client->sending, head);
- gst_buffer_unref (head);
- /* make sure we start from byte 0 for the next buffer */
- client->bufoffset = 0;
- }
- /* update stats */
- client->bytes_sent += wrote;
- client->last_activity_time = now;
- sink->bytes_served += wrote;
- }
- }
- } while (more);
-
- return TRUE;
-
- /* ERRORS */
-flushed:
- {
- GST_DEBUG_OBJECT (sink, "[fd %5d] flushed, removing", fd);
- client->status = GST_CLIENT_STATUS_REMOVED;
- return FALSE;
- }
-connection_reset:
- {
- GST_DEBUG_OBJECT (sink, "[fd %5d] connection reset by peer, removing", fd);
- client->status = GST_CLIENT_STATUS_CLOSED;
- return FALSE;
- }
-write_error:
- {
- GST_WARNING_OBJECT (sink,
- "[fd %5d] could not write, removing client: %s (%d)", fd,
- g_strerror (errno), errno);
- client->status = GST_CLIENT_STATUS_ERROR;
- return FALSE;
- }
-}
-
-/* calculate the new position for a client after recovery. This function
- * does not update the client position but merely returns the required
- * position.
- */
-static gint
-gst_multi_fd_sink_recover_client (GstMultiFdSink * sink, GstTCPClient * client)
-{
- gint newbufpos;
-
- GST_WARNING_OBJECT (sink,
- "[fd %5d] client %p is lagging at %d, recover using policy %d",
- client->fd.fd, client, client->bufpos, sink->recover_policy);
-
- switch (sink->recover_policy) {
- case GST_RECOVER_POLICY_NONE:
- /* do nothing, client will catch up or get kicked out when it reaches
- * the hard max */
- newbufpos = client->bufpos;
- break;
- case GST_RECOVER_POLICY_RESYNC_LATEST:
- /* move to beginning of queue */
- newbufpos = -1;
- break;
- case GST_RECOVER_POLICY_RESYNC_SOFT_LIMIT:
- /* move to beginning of soft max */
- newbufpos = get_buffers_max (sink, sink->units_soft_max);
- break;
- case GST_RECOVER_POLICY_RESYNC_KEYFRAME:
- /* find keyframe in buffers, we search backwards to find the
- * closest keyframe relative to what this client already received. */
- newbufpos = MIN (sink->bufqueue->len - 1,
- get_buffers_max (sink, sink->units_soft_max) - 1);
-
- while (newbufpos >= 0) {
- GstBuffer *buf;
-
- buf = g_array_index (sink->bufqueue, GstBuffer *, newbufpos);
- if (is_sync_frame (sink, buf)) {
- /* found a buffer that is not a delta unit */
- break;
- }
- newbufpos--;
- }
- break;
- default:
- /* unknown recovery procedure */
- newbufpos = get_buffers_max (sink, sink->units_soft_max);
- break;
- }
- return newbufpos;
-}
-
-/* Queue a buffer on the global queue.
- *
- * This function adds the buffer to the front of a GArray. It removes the
- * tail buffer if the max queue size is exceeded, unreffing the queued buffer.
- * Note that unreffing the buffer is not a problem as clients who
- * started writing out this buffer will still have a reference to it in the
- * client->sending queue.
- *
- * After adding the buffer, we update all client positions in the queue. If
- * a client moves over the soft max, we start the recovery procedure for this
- * slow client. If it goes over the hard max, it is put into the slow list
- * and removed.
- *
- * Special care is taken of clients that were waiting for a new buffer (they
- * had a position of -1) because they can proceed after adding this new buffer.
- * This is done by adding the client back into the write fd_set and signaling
- * the select thread that the fd_set changed.
- */
-static void
-gst_multi_fd_sink_queue_buffer (GstMultiFdSink * sink, GstBuffer * buf)
-{
- GList *clients, *next;
- gint queuelen;
- gboolean need_signal = FALSE;
- gint max_buffer_usage;
- gint i;
- GTimeVal nowtv;
- GstClockTime now;
- gint max_buffers, soft_max_buffers;
- guint cookie;
-
- g_get_current_time (&nowtv);
- now = GST_TIMEVAL_TO_TIME (nowtv);
-
- CLIENTS_LOCK (sink);
- /* add buffer to queue */
- g_array_prepend_val (sink->bufqueue, buf);
- queuelen = sink->bufqueue->len;
-
- if (sink->units_max > 0)
- max_buffers = get_buffers_max (sink, sink->units_max);
- else
- max_buffers = -1;
-
- if (sink->units_soft_max > 0)
- soft_max_buffers = get_buffers_max (sink, sink->units_soft_max);
- else
- soft_max_buffers = -1;
- GST_LOG_OBJECT (sink, "Using max %d, softmax %d", max_buffers,
- soft_max_buffers);
-
- /* then loop over the clients and update the positions */
- max_buffer_usage = 0;
-
-restart:
- cookie = sink->clients_cookie;
- for (clients = sink->clients; clients; clients = next) {
- GstTCPClient *client;
-
- if (cookie != sink->clients_cookie) {
- GST_DEBUG_OBJECT (sink, "Clients cookie outdated, restarting");
- goto restart;
- }
-
- client = (GstTCPClient *) clients->data;
- next = g_list_next (clients);
-
- client->bufpos++;
- GST_LOG_OBJECT (sink, "[fd %5d] client %p at position %d",
- client->fd.fd, client, client->bufpos);
- /* check soft max if needed, recover client */
- if (soft_max_buffers > 0 && client->bufpos >= soft_max_buffers) {
- gint newpos;
-
- newpos = gst_multi_fd_sink_recover_client (sink, client);
- if (newpos != client->bufpos) {
- client->dropped_buffers += client->bufpos - newpos;
- client->bufpos = newpos;
- client->discont = TRUE;
- GST_INFO_OBJECT (sink, "[fd %5d] client %p position reset to %d",
- client->fd.fd, client, client->bufpos);
- } else {
- GST_INFO_OBJECT (sink,
- "[fd %5d] client %p not recovering position",
- client->fd.fd, client);
- }
- }
- /* check hard max and timeout, remove client */
- if ((max_buffers > 0 && client->bufpos >= max_buffers) ||
- (sink->timeout > 0
- && now - client->last_activity_time > sink->timeout)) {
- /* remove client */
- GST_WARNING_OBJECT (sink, "[fd %5d] client %p is too slow, removing",
- client->fd.fd, client);
- /* remove the client, the fd set will be cleared and the select thread
- * will be signaled */
- client->status = GST_CLIENT_STATUS_SLOW;
- /* set client to invalid position while being removed */
- client->bufpos = -1;
- gst_multi_fd_sink_remove_client_link (sink, clients);
- need_signal = TRUE;
- continue;
- } else if (client->bufpos == 0 || client->new_connection) {
- /* can send data to this client now. need to signal the select thread that
- * the fd_set changed */
- gst_poll_fd_ctl_write (sink->fdset, &client->fd, TRUE);
- need_signal = TRUE;
- }
- /* keep track of maximum buffer usage */
- if (client->bufpos > max_buffer_usage) {
- max_buffer_usage = client->bufpos;
- }
- }
-
- /* make sure we respect bytes-min, buffers-min and time-min when they are set */
- {
- gint usage, max;
-
- GST_LOG_OBJECT (sink,
- "extending queue %d to respect time_min %" GST_TIME_FORMAT
- ", bytes_min %d, buffers_min %d", max_buffer_usage,
- GST_TIME_ARGS (sink->time_min), sink->bytes_min, sink->buffers_min);
-
- /* get index where the limits are ok, we don't really care if all limits
- * are ok, we just queue as much as we need. We also don't compare against
- * the max limits. */
- find_limits (sink, &usage, sink->bytes_min, sink->buffers_min,
- sink->time_min, &max, -1, -1, -1);
-
- max_buffer_usage = MAX (max_buffer_usage, usage + 1);
- GST_LOG_OBJECT (sink, "extended queue to %d", max_buffer_usage);
- }
-
- /* now look for sync points and make sure there is at least one
- * sync point in the queue. We only do this if the LATEST_KEYFRAME or
- * BURST_KEYFRAME mode is selected */
- if (sink->def_sync_method == GST_SYNC_METHOD_LATEST_KEYFRAME ||
- sink->def_sync_method == GST_SYNC_METHOD_BURST_KEYFRAME) {
- /* no point in searching beyond the queue length */
- gint limit = queuelen;
- GstBuffer *buf;
-
- /* no point in searching beyond the soft-max if any. */
- if (soft_max_buffers > 0) {
- limit = MIN (limit, soft_max_buffers);
- }
- GST_LOG_OBJECT (sink,
- "extending queue to include sync point, now at %d, limit is %d",
- max_buffer_usage, limit);
- for (i = 0; i < limit; i++) {
- buf = g_array_index (sink->bufqueue, GstBuffer *, i);
- if (is_sync_frame (sink, buf)) {
- /* found a sync frame, now extend the buffer usage to
- * include at least this frame. */
- max_buffer_usage = MAX (max_buffer_usage, i);
- break;
- }
- }
- GST_LOG_OBJECT (sink, "max buffer usage is now %d", max_buffer_usage);
- }
-
- GST_LOG_OBJECT (sink, "len %d, usage %d", queuelen, max_buffer_usage);
-
- /* nobody is referencing units after max_buffer_usage so we can
- * remove them from the queue. We remove them in reverse order as
- * this is the most optimal for GArray. */
- for (i = queuelen - 1; i > max_buffer_usage; i--) {
- GstBuffer *old;
-
- /* queue exceeded max size */
- queuelen--;
- old = g_array_index (sink->bufqueue, GstBuffer *, i);
- sink->bufqueue = g_array_remove_index (sink->bufqueue, i);
-
- /* unref tail buffer */
- gst_buffer_unref (old);
- }
- /* save for stats */
- sink->buffers_queued = max_buffer_usage;
- CLIENTS_UNLOCK (sink);
-
- /* and send a signal to thread if fd_set changed */
- if (need_signal) {
- gst_poll_restart (sink->fdset);
- }
-}
-
-/* Handle the clients. Basically does a blocking select for one
- * of the client fds to become read or writable. We also have a
- * filedescriptor to receive commands on that we need to check.
- *
- * After going out of the select call, we read and write to all
- * clients that can do so. Badly behaving clients are put on a
- * garbage list and removed.
- */
-static void
-gst_multi_fd_sink_handle_clients (GstMultiFdSink * sink)
-{
- int result;
- GList *clients, *next;
- gboolean try_again;
- GstMultiFdSinkClass *fclass;
- guint cookie;
-
- fclass = GST_MULTI_FD_SINK_GET_CLASS (sink);
-
- do {
- try_again = FALSE;
-
- /* check for:
- * - server socket input (ie, new client connections)
- * - client socket input (ie, clients saying goodbye)
- * - client socket output (ie, client reads) */
- GST_LOG_OBJECT (sink, "waiting on action on fdset");
-
- result = gst_poll_wait (sink->fdset, sink->timeout != 0 ? sink->timeout :
- GST_CLOCK_TIME_NONE);
-
- /* Handle the special case in which the sink is not receiving more buffers
- * and will not disconnect inactive client in the streaming thread. */
- if (G_UNLIKELY (result == 0)) {
- GstClockTime now;
- GTimeVal nowtv;
-
- g_get_current_time (&nowtv);
- now = GST_TIMEVAL_TO_TIME (nowtv);
-
- CLIENTS_LOCK (sink);
- for (clients = sink->clients; clients; clients = next) {
- GstTCPClient *client;
-
- client = (GstTCPClient *) clients->data;
- next = g_list_next (clients);
- if (sink->timeout > 0
- && now - client->last_activity_time > sink->timeout) {
- client->status = GST_CLIENT_STATUS_SLOW;
- gst_multi_fd_sink_remove_client_link (sink, clients);
- }
- }
- CLIENTS_UNLOCK (sink);
- return;
- } else if (result < 0) {
- GST_WARNING_OBJECT (sink, "wait failed: %s (%d)", g_strerror (errno),
- errno);
- if (errno == EBADF) {
- /* ok, so one or more of the fds is invalid. We loop over them to find
- * the ones that give an error to the F_GETFL fcntl. */
- CLIENTS_LOCK (sink);
- restart:
- cookie = sink->clients_cookie;
- for (clients = sink->clients; clients; clients = next) {
- GstTCPClient *client;
- int fd;
- long flags;
- int res;
-
- if (cookie != sink->clients_cookie) {
- GST_DEBUG_OBJECT (sink, "Cookie changed finding bad fd");
- goto restart;
- }
-
- client = (GstTCPClient *) clients->data;
- next = g_list_next (clients);
-
- fd = client->fd.fd;
-
- res = fcntl (fd, F_GETFL, &flags);
- if (res == -1) {
- GST_WARNING_OBJECT (sink, "fnctl failed for %d, removing: %s (%d)",
- fd, g_strerror (errno), errno);
- if (errno == EBADF) {
- client->status = GST_CLIENT_STATUS_ERROR;
- /* releases the CLIENTS lock */
- gst_multi_fd_sink_remove_client_link (sink, clients);
- }
- }
- }
- CLIENTS_UNLOCK (sink);
- /* after this, go back in the select loop as the read/writefds
- * are not valid */
- try_again = TRUE;
- } else if (errno == EINTR) {
- /* interrupted system call, just redo the wait */
- try_again = TRUE;
- } else if (errno == EBUSY) {
- /* the call to gst_poll_wait() was flushed */
- return;
- } else {
- /* this is quite bad... */
- GST_ELEMENT_ERROR (sink, RESOURCE, READ, (NULL),
- ("select failed: %s (%d)", g_strerror (errno), errno));
- return;
- }
- } else {
- GST_LOG_OBJECT (sink, "wait done: %d sockets with events", result);
- }
- } while (try_again);
-
- /* subclasses can check fdset with this virtual function */
- if (fclass->wait)
- fclass->wait (sink, sink->fdset);
-
- /* Check the clients */
- CLIENTS_LOCK (sink);
-
-restart2:
- cookie = sink->clients_cookie;
- for (clients = sink->clients; clients; clients = next) {
- GstTCPClient *client;
-
- if (sink->clients_cookie != cookie) {
- GST_DEBUG_OBJECT (sink, "Restarting loop, cookie out of date");
- goto restart2;
- }
-
- client = (GstTCPClient *) clients->data;
- next = g_list_next (clients);
-
- if (client->status != GST_CLIENT_STATUS_FLUSHING
- && client->status != GST_CLIENT_STATUS_OK) {
- gst_multi_fd_sink_remove_client_link (sink, clients);
- continue;
- }
-
- if (gst_poll_fd_has_closed (sink->fdset, &client->fd)) {
- client->status = GST_CLIENT_STATUS_CLOSED;
- gst_multi_fd_sink_remove_client_link (sink, clients);
- continue;
- }
- if (gst_poll_fd_has_error (sink->fdset, &client->fd)) {
- GST_WARNING_OBJECT (sink, "gst_poll_fd_has_error for %d", client->fd.fd);
- client->status = GST_CLIENT_STATUS_ERROR;
- gst_multi_fd_sink_remove_client_link (sink, clients);
- continue;
- }
- if (gst_poll_fd_can_read (sink->fdset, &client->fd)) {
- /* handle client read */
- if (!gst_multi_fd_sink_handle_client_read (sink, client)) {
- gst_multi_fd_sink_remove_client_link (sink, clients);
- continue;
- }
- }
- if (gst_poll_fd_can_write (sink->fdset, &client->fd)) {
- /* handle client write */
- if (!gst_multi_fd_sink_handle_client_write (sink, client)) {
- gst_multi_fd_sink_remove_client_link (sink, clients);
- continue;
- }
- }
- }
- CLIENTS_UNLOCK (sink);
-}
-
-/* we handle the client communication in another thread so that we do not block
- * the gstreamer thread while we select() on the client fds */
-static gpointer
-gst_multi_fd_sink_thread (GstMultiFdSink * sink)
-{
- while (sink->running) {
- gst_multi_fd_sink_handle_clients (sink);
- }
- return NULL;
-}
-
-static GstFlowReturn
-gst_multi_fd_sink_render (GstBaseSink * bsink, GstBuffer * buf)
-{
- GstMultiFdSink *sink;
- gboolean in_caps;
-#if 0
- GstCaps *bufcaps, *padcaps;
-#endif
-
- sink = GST_MULTI_FD_SINK (bsink);
-
- g_return_val_if_fail (GST_OBJECT_FLAG_IS_SET (sink, GST_MULTI_FD_SINK_OPEN),
- GST_FLOW_FLUSHING);
-
-#if 0
- /* since we check every buffer for streamheader caps, we need to make
- * sure every buffer has caps set */
- bufcaps = gst_buffer_get_caps (buf);
- padcaps = GST_PAD_CAPS (GST_BASE_SINK_PAD (bsink));
-
- /* make sure we have caps on the pad */
- if (!padcaps && !bufcaps)
- goto no_caps;
-#endif
-
- /* get HEADER first, code below might mess with the flags */
- in_caps = GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_HEADER);
-
-#if 0
- /* stamp the buffer with previous caps if no caps set */
- if (!bufcaps) {
- if (!gst_buffer_is_writable (buf)) {
- /* metadata is not writable, copy will be made and original buffer
- * will be unreffed so we need to ref so that we don't lose the
- * buffer in the render method. */
- gst_buffer_ref (buf);
- /* the new buffer is ours only, we keep it out of the scope of this
- * function */
- buf = gst_buffer_make_writable (buf);
- } else {
- /* else the metadata is writable, we ref because we keep the buffer
- * out of the scope of this method */
- gst_buffer_ref (buf);
- }
- /* buffer metadata is writable now, set the caps */
- gst_buffer_set_caps (buf, padcaps);
- } else {
- gst_caps_unref (bufcaps);
-
- /* since we keep this buffer out of the scope of this method */
- gst_buffer_ref (buf);
- }
-#endif
-
- GST_LOG_OBJECT (sink, "received buffer %p, in_caps: %s, offset %"
- G_GINT64_FORMAT ", offset_end %" G_GINT64_FORMAT
- ", timestamp %" GST_TIME_FORMAT ", duration %" GST_TIME_FORMAT,
- buf, in_caps ? "yes" : "no", GST_BUFFER_OFFSET (buf),
- GST_BUFFER_OFFSET_END (buf),
- GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
- GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
-
- /* if we get HEADER buffers, but the previous buffer was not HEADER,
- * it means we're getting new streamheader buffers, and we should clear
- * the old ones */
- if (in_caps && sink->previous_buffer_in_caps == FALSE) {
- GST_DEBUG_OBJECT (sink,
- "receiving new HEADER buffers, clearing old streamheader");
- g_slist_foreach (sink->streamheader, (GFunc) gst_mini_object_unref, NULL);
- g_slist_free (sink->streamheader);
- sink->streamheader = NULL;
- }
-
- /* save the current in_caps */
- sink->previous_buffer_in_caps = in_caps;
-
- /* if the incoming buffer is marked as IN CAPS, then we assume for now
- * it's a streamheader that needs to be sent to each new client, so we
- * put it on our internal list of streamheader buffers.
- * FIXME: we could check if the buffer's contents are in fact part of the
- * current streamheader.
- *
- * We don't send the buffer to the client, since streamheaders are sent
- * separately when necessary. */
- if (in_caps) {
- GST_DEBUG_OBJECT (sink, "appending HEADER buffer with length %"
- G_GSIZE_FORMAT " to streamheader", gst_buffer_get_size (buf));
- sink->streamheader = g_slist_append (sink->streamheader, buf);
- } else {
- /* queue the buffer, this is a regular data buffer. */
- gst_multi_fd_sink_queue_buffer (sink, buf);
-
- sink->bytes_to_serve += gst_buffer_get_size (buf);
- }
- return GST_FLOW_OK;
-
- /* ERRORS */
-#if 0
-no_caps:
- {
- GST_ELEMENT_ERROR (sink, CORE, NEGOTIATION, (NULL),
- ("Received first buffer without caps set"));
- return GST_FLOW_NOT_NEGOTIATED;
- }
-#endif
-}
-
-static void
-gst_multi_fd_sink_set_property (GObject * object, guint prop_id,
- const GValue * value, GParamSpec * pspec)
-{
- GstMultiFdSink *multifdsink;
-
- multifdsink = GST_MULTI_FD_SINK (object);
-
- switch (prop_id) {
- case PROP_MODE:
- multifdsink->mode = g_value_get_enum (value);
- break;
- case PROP_BUFFERS_MAX:
- multifdsink->units_max = g_value_get_int (value);
- break;
- case PROP_BUFFERS_SOFT_MAX:
- multifdsink->units_soft_max = g_value_get_int (value);
- break;
- case PROP_TIME_MIN:
- multifdsink->time_min = g_value_get_int64 (value);
- break;
- case PROP_BYTES_MIN:
- multifdsink->bytes_min = g_value_get_int (value);
- break;
- case PROP_BUFFERS_MIN:
- multifdsink->buffers_min = g_value_get_int (value);
- break;
- case PROP_UNIT_TYPE:
- multifdsink->unit_type = g_value_get_enum (value);
- break;
- case PROP_UNITS_MAX:
- multifdsink->units_max = g_value_get_int64 (value);
- break;
- case PROP_UNITS_SOFT_MAX:
- multifdsink->units_soft_max = g_value_get_int64 (value);
- break;
- case PROP_RECOVER_POLICY:
- multifdsink->recover_policy = g_value_get_enum (value);
- break;
- case PROP_TIMEOUT:
- multifdsink->timeout = g_value_get_uint64 (value);
- break;
- case PROP_SYNC_METHOD:
- multifdsink->def_sync_method = g_value_get_enum (value);
- break;
- case PROP_BURST_UNIT:
- multifdsink->def_burst_unit = g_value_get_enum (value);
- break;
- case PROP_BURST_VALUE:
- multifdsink->def_burst_value = g_value_get_uint64 (value);
- break;
- case PROP_QOS_DSCP:
- multifdsink->qos_dscp = g_value_get_int (value);
- setup_dscp (multifdsink);
- break;
- case PROP_HANDLE_READ:
- multifdsink->handle_read = g_value_get_boolean (value);
- break;
- case PROP_RESEND_STREAMHEADER:
- multifdsink->resend_streamheader = g_value_get_boolean (value);
- break;
-
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-static void
-gst_multi_fd_sink_get_property (GObject * object, guint prop_id, GValue * value,
- GParamSpec * pspec)
-{
- GstMultiFdSink *multifdsink;
-
- multifdsink = GST_MULTI_FD_SINK (object);
-
- switch (prop_id) {
- case PROP_MODE:
- g_value_set_enum (value, multifdsink->mode);
- break;
- case PROP_BUFFERS_MAX:
- g_value_set_int (value, multifdsink->units_max);
- break;
- case PROP_BUFFERS_SOFT_MAX:
- g_value_set_int (value, multifdsink->units_soft_max);
- break;
- case PROP_TIME_MIN:
- g_value_set_int64 (value, multifdsink->time_min);
- break;
- case PROP_BYTES_MIN:
- g_value_set_int (value, multifdsink->bytes_min);
- break;
- case PROP_BUFFERS_MIN:
- g_value_set_int (value, multifdsink->buffers_min);
- break;
- case PROP_BUFFERS_QUEUED:
- g_value_set_uint (value, multifdsink->buffers_queued);
- break;
- case PROP_BYTES_QUEUED:
- g_value_set_uint (value, multifdsink->bytes_queued);
- break;
- case PROP_TIME_QUEUED:
- g_value_set_uint64 (value, multifdsink->time_queued);
- break;
- case PROP_UNIT_TYPE:
- g_value_set_enum (value, multifdsink->unit_type);
- break;
- case PROP_UNITS_MAX:
- g_value_set_int64 (value, multifdsink->units_max);
- break;
- case PROP_UNITS_SOFT_MAX:
- g_value_set_int64 (value, multifdsink->units_soft_max);
- break;
- case PROP_RECOVER_POLICY:
- g_value_set_enum (value, multifdsink->recover_policy);
- break;
- case PROP_TIMEOUT:
- g_value_set_uint64 (value, multifdsink->timeout);
- break;
- case PROP_SYNC_METHOD:
- g_value_set_enum (value, multifdsink->def_sync_method);
- break;
- case PROP_BYTES_TO_SERVE:
- g_value_set_uint64 (value, multifdsink->bytes_to_serve);
- break;
- case PROP_BYTES_SERVED:
- g_value_set_uint64 (value, multifdsink->bytes_served);
- break;
- case PROP_BURST_UNIT:
- g_value_set_enum (value, multifdsink->def_burst_unit);
- break;
- case PROP_BURST_VALUE:
- g_value_set_uint64 (value, multifdsink->def_burst_value);
- break;
- case PROP_QOS_DSCP:
- g_value_set_int (value, multifdsink->qos_dscp);
- break;
- case PROP_HANDLE_READ:
- g_value_set_boolean (value, multifdsink->handle_read);
- break;
- case PROP_RESEND_STREAMHEADER:
- g_value_set_boolean (value, multifdsink->resend_streamheader);
- break;
- case PROP_NUM_FDS:
- g_value_set_uint (value, g_hash_table_size (multifdsink->fd_hash));
- break;
-
- default:
- G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
- break;
- }
-}
-
-
-/* create a socket for sending to remote machine */
-static gboolean
-gst_multi_fd_sink_start (GstBaseSink * bsink)
-{
- GstMultiFdSinkClass *fclass;
- GstMultiFdSink *this;
-
- if (GST_OBJECT_FLAG_IS_SET (bsink, GST_MULTI_FD_SINK_OPEN))
- return TRUE;
-
- this = GST_MULTI_FD_SINK (bsink);
- fclass = GST_MULTI_FD_SINK_GET_CLASS (this);
-
- GST_INFO_OBJECT (this, "starting in mode %d", this->mode);
- if ((this->fdset = gst_poll_new (TRUE)) == NULL)
- goto socket_pair;
-
- this->streamheader = NULL;
- this->bytes_to_serve = 0;
- this->bytes_served = 0;
-
- if (fclass->init) {
- fclass->init (this);
- }
-
- this->running = TRUE;
-
-#if !GLIB_CHECK_VERSION (2, 31, 0)
- this->thread = g_thread_create ((GThreadFunc) gst_multi_fd_sink_thread,
- this, TRUE, NULL);
-#else
- this->thread = g_thread_new ("multifdsink",
- (GThreadFunc) gst_multi_fd_sink_thread, this);
-#endif
-
- GST_OBJECT_FLAG_SET (this, GST_MULTI_FD_SINK_OPEN);
-
- return TRUE;
-
- /* ERRORS */
-socket_pair:
- {
- GST_ELEMENT_ERROR (this, RESOURCE, OPEN_READ_WRITE, (NULL),
- GST_ERROR_SYSTEM);
- return FALSE;
- }
-}
-
-static gboolean
-multifdsink_hash_remove (gpointer key, gpointer value, gpointer data)
-{
- return TRUE;
-}
-
-static gboolean
-gst_multi_fd_sink_stop (GstBaseSink * bsink)
-{
- GstMultiFdSinkClass *fclass;
- GstMultiFdSink *this;
- GstBuffer *buf;
- int i;
-
- this = GST_MULTI_FD_SINK (bsink);
- fclass = GST_MULTI_FD_SINK_GET_CLASS (this);
-
- if (!GST_OBJECT_FLAG_IS_SET (bsink, GST_MULTI_FD_SINK_OPEN))
- return TRUE;
-
- this->running = FALSE;
-
- gst_poll_set_flushing (this->fdset, TRUE);
- if (this->thread) {
- GST_DEBUG_OBJECT (this, "joining thread");
- g_thread_join (this->thread);
- GST_DEBUG_OBJECT (this, "joined thread");
- this->thread = NULL;
- }
-
- /* free the clients */
- gst_multi_fd_sink_clear (this);
-
- if (this->streamheader) {
- g_slist_foreach (this->streamheader, (GFunc) gst_mini_object_unref, NULL);
- g_slist_free (this->streamheader);
- this->streamheader = NULL;
- }
-
- if (fclass->close)
- fclass->close (this);
-
- if (this->fdset) {
- gst_poll_free (this->fdset);
- this->fdset = NULL;
- }
- g_hash_table_foreach_remove (this->fd_hash, multifdsink_hash_remove, this);
-
- /* remove all queued buffers */
- if (this->bufqueue) {
- GST_DEBUG_OBJECT (this, "Emptying bufqueue with %d buffers",
- this->bufqueue->len);
- for (i = this->bufqueue->len - 1; i >= 0; --i) {
- buf = g_array_index (this->bufqueue, GstBuffer *, i);
- GST_LOG_OBJECT (this, "Removing buffer %p (%d) with refcount %d", buf, i,
- GST_MINI_OBJECT_REFCOUNT (buf));
- gst_buffer_unref (buf);
- this->bufqueue = g_array_remove_index (this->bufqueue, i);
- }
- /* freeing the array is done in _finalize */
- }
- GST_OBJECT_FLAG_UNSET (this, GST_MULTI_FD_SINK_OPEN);
-
- return TRUE;
-}
-
-static GstStateChangeReturn
-gst_multi_fd_sink_change_state (GstElement * element, GstStateChange transition)
-{
- GstMultiFdSink *sink;
- GstStateChangeReturn ret;
-
- sink = GST_MULTI_FD_SINK (element);
-
- /* we disallow changing the state from the streaming thread */
- if (g_thread_self () == sink->thread)
- return GST_STATE_CHANGE_FAILURE;
-
-
- switch (transition) {
- case GST_STATE_CHANGE_NULL_TO_READY:
- if (!gst_multi_fd_sink_start (GST_BASE_SINK (sink)))
- goto start_failed;
- break;
- case GST_STATE_CHANGE_READY_TO_PAUSED:
- break;
- case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
- break;
- default:
- break;
- }
-
- ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
-
- switch (transition) {
- case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
- break;
- case GST_STATE_CHANGE_PAUSED_TO_READY:
- break;
- case GST_STATE_CHANGE_READY_TO_NULL:
- gst_multi_fd_sink_stop (GST_BASE_SINK (sink));
- break;
- default:
- break;
- }
- return ret;
-
- /* ERRORS */
-start_failed:
- {
- /* error message was posted */
- return GST_STATE_CHANGE_FAILURE;
- }
-}
-
-static gboolean
-plugin_init (GstPlugin * plugin)
-{
- if (!gst_element_register (plugin, "multifdsink", GST_RANK_NONE,
- GST_TYPE_MULTI_FD_SINK))
- return FALSE;
-
- return TRUE;
-}
-
-GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
- GST_VERSION_MINOR,
- "multifdsink",
- "transfer data to multiple fds",
- plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
projects / platform / upstream / gst-plugins-bad.git / commitdiff