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unixfd: New plugin with unixfdsink and unixfdsrc elements

Browse source 
This pair of elements, inspired from shmsink/shmsrc, send unix file
descriptors (e.g. memfd, dmabuf) from one sink to multiple source
elements in other processes.

The unixfdsink proposes a memfd/shm allocator, which causes for example
videotestsrc to write directly into memories that can be transfered to
other processes without copying.

Sponsored-by: Netflix Inc.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5328>
This commit is contained in:
Xavier Claessens 2023-09-18 14:38:26 -04:00 committed by GStreamer Marge Bot
parent ceb686a32b
commit f1a1901b8b
9 changed files with 1472 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
subprojects/gst-plugins-bad/gst/meson.build
View file

@ -11,7 +11,7 @@ foreach plugin : ['accurip', 'adpcmdec', 'adpcmenc', 'aiff', 'asfmux',
'mxf', 'netsim', 'onvif', 'pcapparse', 'pnm', 'proxy',
'rawparse', 'removesilence', 'rist', 'rtmp2', 'rtp', 'sdp',
'segmentclip', 'siren', 'smooth', 'speed', 'subenc', 'switchbin',
'timecode', 'transcode', 'videofilters',
'timecode', 'transcode', 'unixfd', 'videofilters',
'videoframe_audiolevel', 'videoparsers', 'videosignal',
'vmnc', 'y4m']
if not get_option(plugin).disabled()

189
subprojects/gst-plugins-bad/gst/unixfd/gstunixfd.c Normal file
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@ -0,0 +1,189 @@
/* GStreamer unix file-descriptor source/sink
*
* Copyright (C) 2023 Netflix Inc.
* Author: Xavier Claessens <xavier.claessens@collabora.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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* plugin-unixfd:
*
* Since: 1.24
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstunixfd.h"
#include <gio/gunixfdmessage.h>
typedef struct
{
guint32 type;
guint32 payload_size;
} Command;
/* For backward compatibility, do not change the size of Command. It should have
* same size on 32bits and 64bits arches. */
G_STATIC_ASSERT (sizeof (Command) == 8);
G_STATIC_ASSERT (sizeof (MemoryPayload) == 16);
G_STATIC_ASSERT (sizeof (NewBufferPayload) == 56);
G_STATIC_ASSERT (sizeof (ReleaseBufferPayload) == 8);
gboolean
gst_unix_fd_send_command (GSocket * socket, CommandType type, GUnixFDList * fds,
const gchar * payload, gsize payload_size, GError ** error)
{
Command command = { type, payload_size };
GOutputVector vect[] = {
{&command, sizeof (Command)},
{payload, payload_size},
};
GSocketControlMessage *msg = NULL;
gint num_msg = 0;
gboolean ret = TRUE;
if (fds != NULL) {
msg = g_unix_fd_message_new_with_fd_list (fds);
num_msg++;
}
if (g_socket_send_message (socket, NULL, vect, G_N_ELEMENTS (vect),
&msg, num_msg, G_SOCKET_MSG_NONE, NULL, error) < 0) {
ret = FALSE;
}
g_clear_object (&msg);
return ret;
}
gboolean
gst_unix_fd_receive_command (GSocket * socket, GCancellable * cancellable,
CommandType * type, GUnixFDList ** fds, gchar ** payload,
gsize * payload_size, GError ** error)
{
Command command;
GInputVector vect = { &command, sizeof (Command) };
GSocketControlMessage **msg = NULL;
gint num_msg = 0;
gint flags = G_SOCKET_MSG_NONE;
gboolean ret = TRUE;
if (g_socket_receive_message (socket, NULL, &vect, 1, &msg, &num_msg, &flags,
cancellable, error) <= 0) {
return FALSE;
}
*type = command.type;
*payload = NULL;
*payload_size = 0;
if (command.payload_size > 0) {
*payload = g_malloc (command.payload_size);
*payload_size = command.payload_size;
if (g_socket_receive (socket, *payload, command.payload_size, cancellable,
error) < (gssize) command.payload_size) {
g_clear_pointer (payload, g_free);
ret = FALSE;
goto out;
}
}
if (fds != NULL) {
*fds = NULL;
for (int i = 0; i < num_msg; i++) {
if (G_IS_UNIX_FD_MESSAGE (msg[i])) {
if (*fds != NULL) {
g_set_error (error, GST_STREAM_ERROR, GST_STREAM_ERROR_FAILED,
"Received more than one fd message");
g_clear_pointer (payload, g_free);
g_clear_object (fds);
ret = FALSE;
goto out;
}
*fds = g_object_ref (g_unix_fd_message_get_fd_list ((GUnixFDMessage *)
msg[i]));
}
}
}
out:
for (int i = 0; i < num_msg; i++)
g_object_unref (msg[i]);
g_free (msg);
return ret;
}
gboolean
gst_unix_fd_parse_new_buffer (gchar * payload, gsize payload_size,
NewBufferPayload ** new_buffer)
{
if (payload == NULL || payload_size < sizeof (NewBufferPayload))
return FALSE;
*new_buffer = (NewBufferPayload *) payload;
gsize struct_size =
sizeof (NewBufferPayload) +
sizeof (MemoryPayload) * (*new_buffer)->n_memory;
if (payload_size < struct_size)
return FALSE;
return TRUE;
}
gboolean
gst_unix_fd_parse_release_buffer (gchar * payload, gsize payload_size,
ReleaseBufferPayload ** release_buffer)
{
if (payload == NULL || payload_size < sizeof (ReleaseBufferPayload))
return FALSE;
*release_buffer = (ReleaseBufferPayload *) payload;
return TRUE;
}
gboolean
gst_unix_fd_parse_caps (gchar * payload, gsize payload_size, gchar ** caps_str)
{
if (payload == NULL || payload_size < 1 || payload[payload_size - 1] != '\0')
return FALSE;
*caps_str = payload;
return TRUE;
}
static gboolean
plugin_init (GstPlugin * plugin)
{
gboolean ret = FALSE;
ret |= GST_ELEMENT_REGISTER (unixfdsrc, plugin);
ret |= GST_ELEMENT_REGISTER (unixfdsink, plugin);
return ret;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
unixfd,
"Unix file descriptor sink and source",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

78
subprojects/gst-plugins-bad/gst/unixfd/gstunixfd.h Normal file
View file

@ -0,0 +1,78 @@
/* GStreamer unix file-descriptor source/sink
*
* Copyright (C) 2023 Netflix Inc.
* Author: Xavier Claessens <xavier.claessens@collabora.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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#include <gst/gst.h>
#include <gio/gio.h>
#include <gio/gunixfdlist.h>
G_BEGIN_DECLS
typedef enum
{
COMMAND_TYPE_NEW_BUFFER = 0,
COMMAND_TYPE_RELEASE_BUFFER = 1,
COMMAND_TYPE_CAPS = 2,
COMMAND_TYPE_EOS = 3,
} CommandType;
typedef struct {
guint64 size;
guint64 offset;
} MemoryPayload;
typedef struct {
guint64 id;
guint64 pts;
guint64 dts;
guint64 duration;
guint64 offset;
guint64 offset_end;
guint32 flags;
guint8 n_memory;
guint8 padding8;
guint16 padding16;
MemoryPayload memories[];
} NewBufferPayload;
typedef struct {
guint64 id;
} ReleaseBufferPayload;
gboolean gst_unix_fd_send_command(GSocket * socket, CommandType type,
GUnixFDList * fds, const gchar * payload, gsize payload_size,
GError ** error);
gboolean gst_unix_fd_receive_command(GSocket * socket,
GCancellable * cancellable, CommandType *type, GUnixFDList ** fds,
gchar ** payload, gsize *payload_size, GError ** error);
gboolean gst_unix_fd_parse_new_buffer(gchar *payload, gsize payload_size,
NewBufferPayload **new_buffer);
gboolean gst_unix_fd_parse_release_buffer(gchar *payload, gsize payload_size,
ReleaseBufferPayload **release_buffer);
gboolean gst_unix_fd_parse_caps(gchar *payload, gsize payload_size,
gchar **caps_str);
GST_ELEMENT_REGISTER_DECLARE (unixfdsrc);
GST_ELEMENT_REGISTER_DECLARE (unixfdsink);
G_END_DECLS

596
subprojects/gst-plugins-bad/gst/unixfd/gstunixfdsink.c Normal file
View file

@ -0,0 +1,596 @@
/* GStreamer unix file-descriptor source/sink
*
* Copyright (C) 2023 Netflix Inc.
* Author: Xavier Claessens <xavier.claessens@collabora.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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-unixfdsink
* @title: unixfdsink
*
* Send file-descriptor backed buffers (e.g. memfd, dmabuf) over unix socket to
* matching unixfdsrc. There can be any number of clients, if none are connected
* buffers are dropped.
*
* Buffers can have any number of #GstMemory, but it is an error if any one of
* them lacks a file-descriptor.
*
* #GstShmAllocator is added into the allocation proposition, which makes
* most sources write their data into shared memory automatically.
*
* ## Example launch lines
* |[
* gst-launch-1.0 -v videotestsrc ! unixfdsink socket-path=/tmp/blah
* gst-launch-1.0 -v unixfdsrc socket-path=/tmp/blah ! autovideosink
* ]|
*
* Since: 1.24
*/
#include "gstunixfd.h"
#include <gst/base/base.h>
#include <gst/allocators/allocators.h>
#include <glib/gstdio.h>
#include <gio/gio.h>
#include <gio/gunixsocketaddress.h>
GST_DEBUG_CATEGORY (unixfdsink_debug);
#define GST_CAT_DEFAULT (unixfdsink_debug)
static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
#define GST_TYPE_UNIX_FD_SINK gst_unix_fd_sink_get_type()
G_DECLARE_FINAL_TYPE (GstUnixFdSink, gst_unix_fd_sink, GST, UNIX_FD_SINK,
GstBaseSink);
typedef struct
{
GHashTable *buffers;
GSource *source;
} Client;
struct _GstUnixFdSink
{
GstBaseSink parent;
GThread *thread;
GMainContext *context;
GMainLoop *loop;
gchar *socket_path;
GSocket *socket;
GSource *source;
/* GSocket -> Client */
GHashTable *clients;
GstCaps *caps;
gboolean uses_monotonic_clock;
};
G_DEFINE_TYPE (GstUnixFdSink, gst_unix_fd_sink, GST_TYPE_BASE_SINK);
GST_ELEMENT_REGISTER_DEFINE (unixfdsink, "unixfdsink", GST_RANK_NONE,
GST_TYPE_UNIX_FD_SINK);
enum
{
PROP_0,
PROP_SOCKET_PATH,
};
static void
client_free (Client * client)
{
g_hash_table_unref (client->buffers);
g_source_destroy (client->source);
g_source_unref (client->source);
g_free (client);
}
static void
gst_unix_fd_sink_init (GstUnixFdSink * self)
{
g_return_if_fail (GST_IS_UNIX_FD_SINK (self));
self->context = g_main_context_new ();
self->loop = g_main_loop_new (self->context, FALSE);
self->clients =
g_hash_table_new_full (NULL, NULL, g_object_unref,
(GDestroyNotify) client_free);
}
static void
gst_unix_fd_sink_finalize (GObject * object)
{
GstUnixFdSink *self = GST_UNIX_FD_SINK (object);
g_free (self->socket_path);
g_main_context_unref (self->context);
g_main_loop_unref (self->loop);
g_hash_table_unref (self->clients);
G_OBJECT_CLASS (gst_unix_fd_sink_parent_class)->finalize (object);
}
static void
gst_unix_fd_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstUnixFdSink *self = GST_UNIX_FD_SINK (object);
GST_OBJECT_LOCK (self);
switch (prop_id) {
case PROP_SOCKET_PATH:
if (self->socket) {
GST_WARNING_OBJECT (self,
"Can only change socket path in NULL or READY state");
break;
}
g_free (self->socket_path);
self->socket_path = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (self);
}
static void
gst_unix_fd_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstUnixFdSink *self = GST_UNIX_FD_SINK (object);
GST_OBJECT_LOCK (self);
switch (prop_id) {
case PROP_SOCKET_PATH:
g_value_set_string (value, self->socket_path);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (self);
}
static gboolean
incoming_command_cb (GSocket * socket, GIOCondition cond, gpointer user_data)
{
GstUnixFdSink *self = user_data;
Client *client;
CommandType command;
gchar *payload = NULL;
gsize payload_size;
GError *error = NULL;
GST_OBJECT_LOCK (self);
client = g_hash_table_lookup (self->clients, socket);
if (client == NULL) {
GST_ERROR_OBJECT (self, "Received data from unknown client");
goto on_error;
}
if (!gst_unix_fd_receive_command (socket, NULL, &command, NULL, &payload,
&payload_size, &error)) {
GST_DEBUG_OBJECT (self, "Failed to receive message from client %p: %s",
client, error != NULL ? error->message : "Connection closed by peer");
goto on_error;
}
switch (command) {
case COMMAND_TYPE_NEW_BUFFER:
case COMMAND_TYPE_CAPS:
GST_ERROR_OBJECT (self, "Received wrong command %d from client %p",
command, client);
goto on_error;
case COMMAND_TYPE_RELEASE_BUFFER:{
ReleaseBufferPayload *release_buffer;
if (!gst_unix_fd_parse_release_buffer (payload, payload_size,
&release_buffer)) {
GST_ERROR_OBJECT (self,
"Received release-buffer with wrong payload size from client %p",
client);
goto on_error;
}
/* id is actually the GstBuffer pointer casted to guint64.
* We can now drop its reference kept for this client. */
if (!g_hash_table_remove (client->buffers, (gpointer) release_buffer->id)) {
GST_ERROR_OBJECT (self,
"Received wrong id %" G_GUINT64_FORMAT
" in release-buffer command from client %p", release_buffer->id,
client);
goto on_error;
}
break;
}
default:
/* Protocol could have been extended with new command */
GST_DEBUG_OBJECT (self, "Ignoring unknown command %d", command);
break;
}
g_free (payload);
GST_OBJECT_UNLOCK (self);
return G_SOURCE_CONTINUE;
on_error:
g_hash_table_remove (self->clients, socket);
g_clear_error (&error);
g_free (payload);
GST_OBJECT_UNLOCK (self);
return G_SOURCE_REMOVE;
}
static gchar *
caps_to_payload (GstCaps * caps, gsize * payload_size)
{
gchar *payload = gst_caps_to_string (caps);
*payload_size = strlen (payload) + 1;
return payload;
}
static gboolean
new_client_cb (GSocket * socket, GIOCondition cond, gpointer user_data)
{
GstUnixFdSink *self = user_data;
Client *client;
GError *error = NULL;
GSocket *client_socket = g_socket_accept (self->socket, NULL, &error);
if (client_socket == NULL) {
GST_ERROR_OBJECT (self, "Failed to accept connection: %s", error->message);
return G_SOURCE_CONTINUE;
}
client = g_new0 (Client, 1);
client->buffers =
g_hash_table_new_full (NULL, NULL, (GDestroyNotify) gst_buffer_unref,
NULL);
client->source = g_socket_create_source (client_socket, G_IO_IN, NULL);
g_source_set_callback (client->source, (GSourceFunc) incoming_command_cb,
self, NULL);
g_source_attach (client->source, self->context);
GST_OBJECT_LOCK (self);
GST_DEBUG_OBJECT (self, "New client %p", client);
g_hash_table_insert (self->clients, client_socket, client);
/* Start by sending our current caps. Keep the lock while doing that because
* we don't want this client to miss a caps event or receive a buffer while we
* send initial caps. */
gsize payload_size;
gchar *payload = caps_to_payload (self->caps, &payload_size);
if (!gst_unix_fd_send_command (client_socket, COMMAND_TYPE_CAPS, NULL,
payload, payload_size, &error)) {
GST_ERROR_OBJECT (self, "Failed to send caps to new client %p: %s", client,
error->message);
g_hash_table_remove (self->clients, client_socket);
g_clear_error (&error);
}
g_free (payload);
GST_OBJECT_UNLOCK (self);
return G_SOURCE_CONTINUE;
}
static gpointer
thread_cb (gpointer user_data)
{
GstUnixFdSink *self = user_data;
g_main_loop_run (self->loop);
return NULL;
}
static gboolean
gst_unix_fd_sink_start (GstBaseSink * bsink)
{
GstUnixFdSink *self = (GstUnixFdSink *) bsink;
GSocketAddress *addr = NULL;
GError *error = NULL;
gboolean ret = TRUE;
GST_OBJECT_LOCK (self);
if (self->socket_path == NULL) {
GST_ERROR_OBJECT (self, "Socket path is NULL");
ret = FALSE;
goto out;
}
addr = g_unix_socket_address_new (self->socket_path);
self->socket =
g_socket_new (G_SOCKET_FAMILY_UNIX, G_SOCKET_TYPE_STREAM,
G_SOCKET_PROTOCOL_DEFAULT, &error);
if (self->socket == NULL) {
GST_ERROR_OBJECT (self, "Failed to create UNIX socket: %s", error->message);
ret = FALSE;
goto out;
}
if (!g_socket_bind (self->socket, addr, TRUE, &error)) {
GST_ERROR_OBJECT (self, "Failed to bind socket: %s", error->message);
g_clear_object (&self->socket);
ret = FALSE;
goto out;
}
if (!g_socket_listen (self->socket, &error)) {
GST_ERROR_OBJECT (self, "Failed to listen socket: %s", error->message);
g_clear_object (&self->socket);
ret = FALSE;
goto out;
}
self->source = g_socket_create_source (self->socket, G_IO_IN, NULL);
g_source_set_callback (self->source, (GSourceFunc) new_client_cb, self, NULL);
g_source_attach (self->source, self->context);
self->thread = g_thread_new ("unixfdsink", thread_cb, self);
out:
GST_OBJECT_UNLOCK (self);
g_clear_error (&error);
g_clear_object (&addr);
return ret;
}
static gboolean
gst_unix_fd_sink_stop (GstBaseSink * bsink)
{
GstUnixFdSink *self = (GstUnixFdSink *) bsink;
g_main_loop_quit (self->loop);
g_thread_join (self->thread);
g_source_destroy (self->source);
g_clear_pointer (&self->source, g_source_unref);
g_clear_object (&self->socket);
gst_clear_caps (&self->caps);
g_hash_table_remove_all (self->clients);
g_unlink (self->socket_path);
return TRUE;
}
static void
send_command_to_all (GstUnixFdSink * self, CommandType type, GUnixFDList * fds,
const gchar * payload, gsize payload_size, GstBuffer * buffer)
{
GHashTableIter iter;
GSocket *socket;
Client *client;
GError *error = NULL;
g_hash_table_iter_init (&iter, self->clients);
while (g_hash_table_iter_next (&iter, (gpointer) & socket,
(gpointer) & client)) {
if (!gst_unix_fd_send_command (socket, type, fds, payload, payload_size,
&error)) {
GST_ERROR_OBJECT (self, "Failed to send command %d to client %p: %s",
type, client, error->message);
g_clear_error (&error);
g_hash_table_iter_remove (&iter);
continue;
}
/* Keep a ref on this buffer until all clients released it. */
if (buffer != NULL)
g_hash_table_add (client->buffers, gst_buffer_ref (buffer));
}
}
static GstClockTime
calculate_timestamp (GstClockTime timestamp, GstClockTime base_time,
GstClockTime latency, GstClockTimeDiff clock_diff)
{
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
/* Convert running time to pipeline clock time */
timestamp += base_time;
if (GST_CLOCK_TIME_IS_VALID (latency))
timestamp += latency;
/* Convert to system monotonic clock time */
if (clock_diff < 0 && -clock_diff > timestamp)
return 0;
timestamp += clock_diff;
}
return timestamp;
}
static GstFlowReturn
gst_unix_fd_sink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstUnixFdSink *self = (GstUnixFdSink *) bsink;
GstFlowReturn ret = GST_FLOW_OK;
GError *error = NULL;
/* Allocate payload */
guint n_memory = gst_buffer_n_memory (buffer);
gsize payload_size =
sizeof (NewBufferPayload) + sizeof (MemoryPayload) * n_memory;
gchar *payload = g_malloc0 (payload_size);
GstClockTime latency = gst_base_sink_get_latency (GST_BASE_SINK_CAST (self));
GstClockTime base_time = gst_element_get_base_time (GST_ELEMENT_CAST (self));
GstClockTimeDiff clock_diff = 0;
if (!self->uses_monotonic_clock) {
clock_diff = GST_CLOCK_DIFF (g_get_monotonic_time () * GST_USECOND,
gst_clock_get_time (GST_ELEMENT_CLOCK (self)));
}
NewBufferPayload *new_buffer = (NewBufferPayload *) payload;
/* Cast buffer pointer to guint64 identifier. Client will send us back that
* id so we know which buffer to unref. */
new_buffer->id = (guint64) buffer;
new_buffer->pts =
calculate_timestamp (GST_BUFFER_PTS (buffer), base_time, latency,
clock_diff);
new_buffer->dts =
calculate_timestamp (GST_BUFFER_DTS (buffer), base_time, latency,
clock_diff);
new_buffer->duration = GST_BUFFER_DURATION (buffer);
new_buffer->offset = GST_BUFFER_OFFSET (buffer);
new_buffer->offset_end = GST_BUFFER_OFFSET_END (buffer);
new_buffer->flags = GST_BUFFER_FLAGS (buffer);
new_buffer->n_memory = n_memory;
GUnixFDList *fds = g_unix_fd_list_new ();
for (int i = 0; i < n_memory; i++) {
GstMemory *mem = gst_buffer_peek_memory (buffer, i);
if (!gst_is_fd_memory (mem)) {
GST_ERROR_OBJECT (self, "Expecting buffers with FD memories");
ret = GST_FLOW_ERROR;
goto out;
}
if (g_unix_fd_list_append (fds, gst_fd_memory_get_fd (mem), &error) < 0) {
GST_ERROR_OBJECT (self, "Failed to append FD: %s", error->message);
ret = GST_FLOW_ERROR;
goto out;
}
gsize offset;
new_buffer->memories[i].size = gst_memory_get_sizes (mem, &offset, NULL);
new_buffer->memories[i].offset = offset;
}
GST_OBJECT_LOCK (self);
send_command_to_all (self, COMMAND_TYPE_NEW_BUFFER, fds, payload,
payload_size, buffer);
GST_OBJECT_UNLOCK (self);
out:
g_clear_object (&fds);
g_clear_error (&error);
g_free (payload);
return ret;
}
static gboolean
gst_unix_fd_sink_event (GstBaseSink * bsink, GstEvent * event)
{
GstUnixFdSink *self = (GstUnixFdSink *) bsink;
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:{
GST_OBJECT_LOCK (self);
gst_clear_caps (&self->caps);
gst_event_parse_caps (event, &self->caps);
gst_caps_ref (self->caps);
GST_DEBUG_OBJECT (self, "Send new caps to all clients: %" GST_PTR_FORMAT,
self->caps);
gsize payload_size;
gchar *payload = caps_to_payload (self->caps, &payload_size);
send_command_to_all (self, COMMAND_TYPE_CAPS, NULL, payload, payload_size,
NULL);
g_free (payload);
GST_OBJECT_UNLOCK (self);
break;
}
case GST_EVENT_EOS:{
GST_OBJECT_LOCK (self);
send_command_to_all (self, COMMAND_TYPE_EOS, NULL, NULL, 0, NULL);
GST_OBJECT_UNLOCK (self);
break;
}
default:
break;
}
return GST_BASE_SINK_CLASS (gst_unix_fd_sink_parent_class)->event (bsink,
event);
}
static gboolean
gst_unix_fd_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
{
GstAllocator *allocator = gst_shm_allocator_get ();
gst_query_add_allocation_param (query, allocator, NULL);
gst_object_unref (allocator);
return TRUE;
}
static gboolean
gst_unix_fd_sink_set_clock (GstElement * element, GstClock * clock)
{
GstUnixFdSink *self = (GstUnixFdSink *) element;
self->uses_monotonic_clock = FALSE;
if (clock != NULL && G_OBJECT_TYPE (clock) == GST_TYPE_SYSTEM_CLOCK) {
GstClockType clock_type;
g_object_get (clock, "clock-type", &clock_type, NULL);
self->uses_monotonic_clock = clock_type == GST_CLOCK_TYPE_MONOTONIC;
}
return GST_ELEMENT_CLASS (gst_unix_fd_sink_parent_class)->set_clock (element,
clock);
}
static void
gst_unix_fd_sink_class_init (GstUnixFdSinkClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
GstBaseSinkClass *gstbasesink_class = (GstBaseSinkClass *) klass;
GST_DEBUG_CATEGORY_INIT (unixfdsink_debug, "unixfdsink", 0,
"Unix file descriptor sink");
gst_element_class_set_static_metadata (gstelement_class,
"Unix file descriptor sink", "Sink", "Unix file descriptor sink",
"Xavier Claessens <xavier.claessens@collabora.com>");
gst_element_class_add_static_pad_template (gstelement_class, &sinktemplate);
gst_shm_allocator_init_once ();
gobject_class->finalize = gst_unix_fd_sink_finalize;
gobject_class->set_property = gst_unix_fd_sink_set_property;
gobject_class->get_property = gst_unix_fd_sink_get_property;
gstelement_class->set_clock = GST_DEBUG_FUNCPTR (gst_unix_fd_sink_set_clock);
gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_unix_fd_sink_start);
gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_unix_fd_sink_stop);
gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_unix_fd_sink_render);
gstbasesink_class->event = GST_DEBUG_FUNCPTR (gst_unix_fd_sink_event);
gstbasesink_class->propose_allocation =
GST_DEBUG_FUNCPTR (gst_unix_fd_sink_propose_allocation);
g_object_class_install_property (gobject_class, PROP_SOCKET_PATH,
g_param_spec_string ("socket-path",
"Path to the control socket",
"The path to the control socket used to control the shared memory "
"transport. This may be modified during the NULL->READY transition",
NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
}

477
subprojects/gst-plugins-bad/gst/unixfd/gstunixfdsrc.c Normal file
View file

@ -0,0 +1,477 @@
/* GStreamer unix file-descriptor source/sink
*
* Copyright (C) 2023 Netflix Inc.
* Author: Xavier Claessens <xavier.claessens@collabora.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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:element-unixfdsrc
* @title: unixfdsrc
*
* Receive file-descriptor backed buffers (e.g. memfd, dmabuf) over unix socket
* from matching unixfdsink.
*
* ## Example launch lines
* |[
* gst-launch-1.0 -v videotestsrc ! unixfdsink socket-path=/tmp/blah
* gst-launch-1.0 -v unixfdsrc socket-path=/tmp/blah ! autovideosink
* ]|
*
* Since: 1.24
*/
#include "gstunixfd.h"
#include <gst/base/base.h>
#include <gst/allocators/allocators.h>
#include <glib/gstdio.h>
#include <gio/gio.h>
#include <gio/gunixfdmessage.h>
#include <gio/gunixsocketaddress.h>
GST_DEBUG_CATEGORY (unixfdsrc_debug);
#define GST_CAT_DEFAULT (unixfdsrc_debug)
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
#define GST_TYPE_UNIX_FD_SRC gst_unix_fd_src_get_type()
G_DECLARE_FINAL_TYPE (GstUnixFdSrc, gst_unix_fd_src, GST, UNIX_FD_SRC,
GstPushSrc);
struct _GstUnixFdSrc
{
GstPushSrc parent;
gchar *socket_path;
GSocket *socket;
GCancellable *cancellable;
GstAllocator *allocator;
GHashTable *memories;
gboolean uses_monotonic_clock;
};
G_DEFINE_TYPE (GstUnixFdSrc, gst_unix_fd_src, GST_TYPE_PUSH_SRC);
GST_ELEMENT_REGISTER_DEFINE (unixfdsrc, "unixfdsrc", GST_RANK_NONE,
GST_TYPE_UNIX_FD_SRC);
enum
{
PROP_0,
PROP_SOCKET_PATH,
};
typedef struct
{
guint64 id;
guint n_memory;
} BufferContext;
static void
memory_weak_ref_cb (GstUnixFdSrc * self, GstMemory * mem)
{
GST_OBJECT_LOCK (self);
BufferContext *ctx = g_hash_table_lookup (self->memories, mem);
if (ctx == NULL)
goto out;
if (--ctx->n_memory == 0) {
/* Notify that we are not using this buffer anymore */
ReleaseBufferPayload payload = { ctx->id };
GError *error = NULL;
if (!gst_unix_fd_send_command (self->socket, COMMAND_TYPE_RELEASE_BUFFER,
NULL, (const gchar *) &payload, sizeof (payload), &error)) {
GST_WARNING_OBJECT (self, "Failed to send release-buffer command: %s",
error->message);
g_clear_error (&error);
}
g_free (ctx);
}
g_hash_table_remove (self->memories, mem);
out:
GST_OBJECT_UNLOCK (self);
}
static void
gst_unix_fd_src_init (GstUnixFdSrc * self)
{
g_return_if_fail (GST_IS_UNIX_FD_SRC (self));
self->cancellable = g_cancellable_new ();
self->memories = g_hash_table_new (NULL, NULL);
self->allocator = gst_fd_allocator_new ();
gst_base_src_set_live (GST_BASE_SRC (self), TRUE);
}
static void
gst_unix_fd_src_finalize (GObject * object)
{
GstUnixFdSrc *self = GST_UNIX_FD_SRC (object);
g_free (self->socket_path);
g_object_unref (self->cancellable);
g_hash_table_unref (self->memories);
gst_object_unref (self->allocator);
G_OBJECT_CLASS (gst_unix_fd_src_parent_class)->finalize (object);
}
static void
gst_unix_fd_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstUnixFdSrc *self = GST_UNIX_FD_SRC (object);
GST_OBJECT_LOCK (self);
switch (prop_id) {
case PROP_SOCKET_PATH:
if (self->socket) {
GST_WARNING_OBJECT (self,
"Can only change socket path in NULL or READY state");
break;
}
g_free (self->socket_path);
self->socket_path = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (self);
}
static void
gst_unix_fd_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstUnixFdSrc *self = GST_UNIX_FD_SRC (object);
GST_OBJECT_LOCK (self);
switch (prop_id) {
case PROP_SOCKET_PATH:
g_value_set_string (value, self->socket_path);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (self);
}
static gboolean
gst_unix_fd_src_start (GstBaseSrc * bsrc)
{
GstUnixFdSrc *self = (GstUnixFdSrc *) bsrc;
GSocketAddress *addr = NULL;
GError *error = NULL;
gboolean ret = TRUE;
gst_base_src_set_format (bsrc, GST_FORMAT_TIME);
GST_OBJECT_LOCK (self);
if (self->socket_path == NULL) {
GST_ERROR_OBJECT (self, "Socket path is NULL");
ret = FALSE;
goto out;
}
addr = g_unix_socket_address_new (self->socket_path);
self->socket =
g_socket_new (G_SOCKET_FAMILY_UNIX, G_SOCKET_TYPE_STREAM,
G_SOCKET_PROTOCOL_DEFAULT, &error);
if (self->socket == NULL) {
GST_ERROR_OBJECT (self, "Failed to create UNIX socket: %s", error->message);
ret = FALSE;
goto out;
}
if (!g_socket_connect (self->socket, addr, NULL, &error)) {
GST_ERROR_OBJECT (self, "Failed to connect socket: %s", error->message);
g_clear_object (&self->socket);
ret = FALSE;
goto out;
}
out:
GST_OBJECT_UNLOCK (self);
g_clear_error (&error);
g_clear_object (&addr);
return ret;
}
static gboolean
gst_unix_fd_src_stop (GstBaseSrc * bsrc)
{
GstUnixFdSrc *self = (GstUnixFdSrc *) bsrc;
GST_OBJECT_LOCK (self);
/* Remove all weak refs we could still have to not be called back later.
* Service side will cleanup pending buffers when socket gets closed. */
GstMemory *mem;
BufferContext *ctx;
GHashTableIter iter;
g_hash_table_iter_init (&iter, self->memories);
while (g_hash_table_iter_next (&iter, (gpointer *) & mem, (gpointer *) & ctx)) {
gst_mini_object_weak_unref (GST_MINI_OBJECT_CAST (mem),
(GstMiniObjectNotify) memory_weak_ref_cb, self);
if (--ctx->n_memory == 0)
g_free (ctx);
}
g_hash_table_remove_all (self->memories);
g_clear_object (&self->socket);
GST_OBJECT_UNLOCK (self);
return TRUE;
}
static gboolean
gst_unix_fd_src_unlock (GstBaseSrc * bsrc)
{
GstUnixFdSrc *self = GST_UNIX_FD_SRC (bsrc);
g_cancellable_cancel (self->cancellable);
return TRUE;
}
static gboolean
gst_unix_fd_src_unlock_stop (GstBaseSrc * bsrc)
{
GstUnixFdSrc *self = GST_UNIX_FD_SRC (bsrc);
g_cancellable_reset (self->cancellable);
return TRUE;
}
static GstClockTime
calculate_timestamp (GstClockTime timestamp, GstClockTime base_time,
GstClockTimeDiff clock_diff)
{
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
/* Convert from system monotonic clock time to pipeline clock time */
if (clock_diff > 0 && clock_diff > timestamp)
return 0;
timestamp -= clock_diff;
/* Convert to running time */
if (base_time > timestamp)
return 0;
timestamp -= base_time;
}
return timestamp;
}
static GstFlowReturn
gst_unix_fd_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
{
GstUnixFdSrc *self = GST_UNIX_FD_SRC (psrc);
CommandType command;
GUnixFDList *fds = NULL;
gchar *payload = NULL;
gsize payload_size;
GError *error = NULL;
GstFlowReturn ret = GST_FLOW_OK;
again:
/* Block until we receive a command */
if (!gst_unix_fd_receive_command (self->socket, self->cancellable, &command,
&fds, &payload, &payload_size, &error)) {
if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED)) {
ret = GST_FLOW_FLUSHING;
goto on_error;
}
GST_ERROR_OBJECT (self, "Failed to read from sink element: %s",
error != NULL ? error->message : "Connection closed by peer");
ret = GST_FLOW_ERROR;
goto on_error;
}
switch (command) {
case COMMAND_TYPE_RELEASE_BUFFER:
GST_ERROR_OBJECT (self, "Received wrong command %d", command);
ret = GST_FLOW_ERROR;
goto on_error;
case COMMAND_TYPE_NEW_BUFFER:{
NewBufferPayload *new_buffer;
if (!gst_unix_fd_parse_new_buffer (payload, payload_size, &new_buffer)) {
GST_ERROR_OBJECT (self, "Received new-buffer with wrong payload size");
ret = GST_FLOW_ERROR;
goto on_error;
}
if (fds == NULL) {
GST_ERROR_OBJECT (self,
"Received new buffer command without file descriptors");
return GST_FLOW_ERROR;
}
if (g_unix_fd_list_get_length (fds) != new_buffer->n_memory) {
GST_ERROR_OBJECT (self,
"Received new buffer command with %d file descriptors instead of %d",
g_unix_fd_list_get_length (fds), new_buffer->n_memory);
ret = GST_FLOW_ERROR;
goto on_error;
}
gint *fds_arr = g_unix_fd_list_steal_fds (fds, NULL);
BufferContext *ctx = g_new0 (BufferContext, 1);
ctx->id = new_buffer->id;
ctx->n_memory = new_buffer->n_memory;
*outbuf = gst_buffer_new ();
GstClockTime base_time =
gst_element_get_base_time (GST_ELEMENT_CAST (self));
GstClockTimeDiff clock_diff = 0;
if (!self->uses_monotonic_clock) {
clock_diff = GST_CLOCK_DIFF (g_get_monotonic_time () * GST_USECOND,
gst_clock_get_time (GST_ELEMENT_CLOCK (self)));
}
GST_BUFFER_PTS (*outbuf) =
calculate_timestamp (new_buffer->pts, base_time, clock_diff);
GST_BUFFER_DTS (*outbuf) =
calculate_timestamp (new_buffer->dts, base_time, clock_diff);
GST_BUFFER_DURATION (*outbuf) = new_buffer->duration;
GST_BUFFER_OFFSET (*outbuf) = new_buffer->offset;
GST_BUFFER_OFFSET_END (*outbuf) = new_buffer->offset_end;
GST_BUFFER_FLAGS (*outbuf) = new_buffer->flags;
GST_OBJECT_LOCK (self);
for (int i = 0; i < new_buffer->n_memory; i++) {
GstMemory *mem = gst_fd_allocator_alloc (self->allocator, fds_arr[i],
new_buffer->memories[i].size, GST_FD_MEMORY_FLAG_NONE);
gst_memory_resize (mem, new_buffer->memories[i].offset,
new_buffer->memories[i].size);
GST_MINI_OBJECT_FLAG_SET (mem, GST_MEMORY_FLAG_READONLY);
g_hash_table_insert (self->memories, mem, ctx);
gst_mini_object_weak_ref (GST_MINI_OBJECT_CAST (mem),
(GstMiniObjectNotify) memory_weak_ref_cb, self);
gst_buffer_append_memory (*outbuf, mem);
}
GST_OBJECT_UNLOCK (self);
g_free (fds_arr);
break;
}
case COMMAND_TYPE_CAPS:{
gchar *caps_str;
if (!gst_unix_fd_parse_caps (payload, payload_size, &caps_str)) {
GST_ERROR_OBJECT (self, "Received caps string is not nul-terminated");
ret = GST_FLOW_ERROR;
goto on_error;
}
GstCaps *caps = gst_caps_from_string (caps_str);
GST_DEBUG_OBJECT (self, "Received caps %" GST_PTR_FORMAT, caps);
gst_base_src_set_caps (GST_BASE_SRC_CAST (self), caps);
gst_caps_unref (caps);
break;
}
case COMMAND_TYPE_EOS:{
GST_DEBUG_OBJECT (self, "Received EOS");
ret = GST_FLOW_EOS;
break;
}
default:
/* Protocol could have been extended with new command */
GST_DEBUG_OBJECT (self, "Ignoring unknown command %d", command);
break;
}
if (*outbuf == NULL && ret == GST_FLOW_OK) {
g_clear_object (&fds);
g_clear_pointer (&payload, g_free);
goto again;
}
on_error:
g_clear_error (&error);
g_clear_object (&fds);
g_free (payload);
return ret;
}
static gboolean
gst_unix_fd_src_set_clock (GstElement * element, GstClock * clock)
{
GstUnixFdSrc *self = (GstUnixFdSrc *) element;
self->uses_monotonic_clock = FALSE;
if (clock != NULL && G_OBJECT_TYPE (clock) == GST_TYPE_SYSTEM_CLOCK) {
GstClockType clock_type;
g_object_get (clock, "clock-type", &clock_type, NULL);
self->uses_monotonic_clock = clock_type == GST_CLOCK_TYPE_MONOTONIC;
}
return GST_ELEMENT_CLASS (gst_unix_fd_src_parent_class)->set_clock (element,
clock);
}
static void
gst_unix_fd_src_class_init (GstUnixFdSrcClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
GstBaseSrcClass *gstbasesrc_class = (GstBaseSrcClass *) klass;
GstPushSrcClass *gstpushsrc_class = (GstPushSrcClass *) klass;
GST_DEBUG_CATEGORY_INIT (unixfdsrc_debug, "unixfdsrc", 0,
"Unix file descriptor source");
gst_element_class_set_static_metadata (gstelement_class,
"Unix file descriptor source", "Src", "Unix file descriptor source",
"Xavier Claessens <xavier.claessens@collabora.com>");
gst_element_class_add_static_pad_template (gstelement_class, &srctemplate);
gobject_class->finalize = gst_unix_fd_src_finalize;
gobject_class->set_property = gst_unix_fd_src_set_property;
gobject_class->get_property = gst_unix_fd_src_get_property;
gstelement_class->set_clock = GST_DEBUG_FUNCPTR (gst_unix_fd_src_set_clock);
gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_unix_fd_src_start);
gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_unix_fd_src_stop);
gstbasesrc_class->unlock = GST_DEBUG_FUNCPTR (gst_unix_fd_src_unlock);
gstbasesrc_class->unlock_stop =
GST_DEBUG_FUNCPTR (gst_unix_fd_src_unlock_stop);
gstpushsrc_class->create = gst_unix_fd_src_create;
g_object_class_install_property (gobject_class, PROP_SOCKET_PATH,
g_param_spec_string ("socket-path",
"Path to the control socket",
"The path to the control socket used to control the shared memory "
"transport. This may be modified during the NULL->READY transition",
NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
}

23
subprojects/gst-plugins-bad/gst/unixfd/meson.build Normal file
View file

@ -0,0 +1,23 @@
sources = [
'gstunixfd.c',
'gstunixfdsink.c',
'gstunixfdsrc.c',
]
gstallocators_dep = dependency('gstreamer-allocators-1.0')
gio_unix_dep = dependency('gio-unix-2.0', required: get_option('unixfd'))
if not gio_unix_dep.found()
subdir_done()
endif
gstunixfd_plugin = library('gstunixfd',
sources,
c_args: gst_plugins_bad_args,
include_directories: [configinc],
dependencies : [gstbase_dep, gstallocators_dep, gio_dep, gio_unix_dep],
install : true,
install_dir : plugins_install_dir,
)
plugins += [gstunixfd_plugin]

1
subprojects/gst-plugins-bad/meson_options.txt
View file

@ -63,6 +63,7 @@ option('speed', type : 'feature', value : 'auto')
option('subenc', type : 'feature', value : 'auto')
option('switchbin', type : 'feature', value : 'auto')
option('timecode', type : 'feature', value : 'auto')
option('unixfd', type : 'feature', value : 'auto')
option('videofilters', type : 'feature', value : 'auto')
option('videoframe_audiolevel', type : 'feature', value : 'auto')
option('videoparsers', type : 'feature', value : 'auto')

106
subprojects/gst-plugins-bad/tests/check/elements/unixfd.c Normal file
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@ -0,0 +1,106 @@
/* GStreamer unix file-descriptor source/sink tests
*
* Copyright (C) 2023 Netflix Inc.
* Author: Xavier Claessens <xavier.claessens@collabora.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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include <gst/check/gstcheck.h>
#include <glib/gstdio.h>
static void
wait_preroll (GstElement * element)
{
GstStateChangeReturn state_res =
gst_element_set_state (element, GST_STATE_PLAYING);
fail_unless (state_res != GST_STATE_CHANGE_FAILURE);
state_res = gst_element_get_state (element, NULL, NULL, GST_CLOCK_TIME_NONE);
fail_unless (state_res == GST_STATE_CHANGE_SUCCESS);
}
GST_START_TEST (test_unixfd_videotestsrc)
{
GError *error = NULL;
/* Ensure we don't have socket from previous failed test */
gchar *socket_path =
g_strdup_printf ("%s/unixfd-test-socket", g_get_user_runtime_dir ());
if (g_file_test (socket_path, G_FILE_TEST_EXISTS)) {
g_unlink (socket_path);
}
/* Setup source */
gchar *pipeline_str =
g_strdup_printf ("videotestsrc ! unixfdsink socket-path=%s", socket_path);
GstElement *pipeline_service = gst_parse_launch (pipeline_str, &error);
g_assert_no_error (error);
g_free (pipeline_str);
wait_preroll (pipeline_service);
/* Setup sink */
pipeline_str =
g_strdup_printf ("unixfdsrc socket-path=%s ! fakesink", socket_path);
GstElement *pipeline_client_1 = gst_parse_launch (pipeline_str, &error);
g_assert_no_error (error);
wait_preroll (pipeline_client_1);
/* disconnect, reconnect */
fail_unless (gst_element_set_state (pipeline_client_1,
GST_STATE_READY) == GST_STATE_CHANGE_SUCCESS);
wait_preroll (pipeline_client_1);
/* Connect 2nd sink */
GstElement *pipeline_client_2 = gst_parse_launch (pipeline_str, &error);
g_assert_no_error (error);
wait_preroll (pipeline_client_2);
/* Teardown */
fail_unless (gst_element_set_state (pipeline_client_1,
GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS);
fail_unless (gst_element_set_state (pipeline_client_2,
GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS);
fail_unless (gst_element_set_state (pipeline_service,
GST_STATE_NULL) == GST_STATE_CHANGE_SUCCESS);
fail_if (g_file_test (socket_path, G_FILE_TEST_EXISTS));
gst_object_unref (pipeline_service);
gst_object_unref (pipeline_client_1);
gst_object_unref (pipeline_client_2);
g_free (socket_path);
g_free (pipeline_str);
}
GST_END_TEST;
static Suite *
unixfd_suite (void)
{
Suite *s = suite_create ("unixfd");
TCase *tc = tcase_create ("unixfd");
suite_add_tcase (s, tc);
tcase_add_test (tc, test_unixfd_videotestsrc);
return s;
}
GST_CHECK_MAIN (unixfd);

1
subprojects/gst-plugins-bad/tests/check/meson.build
View file

@ -142,6 +142,7 @@ if host_machine.system() != 'windows'
[['elements/jpegparse.c'], not cdata.has('HAVE_UNISTD_H')],
[['elements/netsim.c']],
[['elements/shm.c'], not shm_enabled, shm_deps],
[['elements/unixfd.c'], not gio_unix_dep.found()],
[['elements/voaacenc.c'],
not voaac_dep.found() or not cdata.has('HAVE_UNISTD_H'), [voaac_dep]],
[['elements/webrtcbin.c'], not libnice_dep.found(), [gstwebrtc_dep]],