gstreamer/subprojects/gst-plugins-bad/sys/nvcodec/gstcudaipcclient_unix.cpp

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/* GStreamer
* Copyright (C) 2023 Seungha Yang <seungha@centricular.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 "gstcudaipcclient_unix.h"
#include <string>
#include <mutex>
#include <condition_variable>
#include <chrono>
#include <gio/gunixsocketaddress.h>
#include <gio/gunixconnection.h>
GST_DEBUG_CATEGORY_EXTERN (cuda_ipc_client_debug);
#define GST_CAT_DEFAULT cuda_ipc_client_debug
/* *INDENT-OFF* */
struct GstCudaIpcClientConnUnix : public GstCudaIpcClientConn
{
GstCudaIpcClientConnUnix (GSocketConnection * socket_conn,
GCancellable * cancel)
{
conn = socket_conn;
cancellable = (GCancellable *) g_object_ref (cancel);
istream = g_io_stream_get_input_stream (G_IO_STREAM (conn));
ostream = g_io_stream_get_output_stream (G_IO_STREAM (conn));
}
~GstCudaIpcClientConnUnix ()
{
g_cancellable_cancel (cancellable);
g_object_unref (conn);
g_object_unref (cancellable);
}
GSocketConnection *conn;
GInputStream *istream;
GOutputStream *ostream;
GCancellable *cancellable;
};
struct GstCudaIpcClientUnixPrivate
{
GstCudaIpcClientUnixPrivate ()
{
main_context = g_main_context_new ();
main_loop = g_main_loop_new (main_context, FALSE);
cancellable = g_cancellable_new ();
}
~GstCudaIpcClientUnixPrivate ()
{
g_main_loop_unref (main_loop);
g_main_context_unref (main_context);
}
std::string address;
GstClockTime timeout;
std::mutex lock;
std::condition_variable cond;
GMainLoop *main_loop;
GMainContext *main_context;
GCancellable *cancellable;
bool flushing = false;
};
/* *INDENT-ON* */
struct _GstCudaIpcClientUnix
{
GstCudaIpcClient parent;
GstCudaIpcClientUnixPrivate *priv;
};
static void gst_cuda_ipc_client_unix_finalize (GObject * object);
static bool gst_cuda_ipc_client_unix_send_msg (GstCudaIpcClient * client,
GstCudaIpcClientConn * conn);
static bool gst_cuda_ipc_client_unix_wait_msg (GstCudaIpcClient * client,
GstCudaIpcClientConn * conn);
static void gst_cuda_ipc_client_unix_terminate (GstCudaIpcClient * client);
static void gst_cuda_ipc_client_unix_invoke (GstCudaIpcClient * client);
static void gst_cuda_ipc_client_unix_set_flushing (GstCudaIpcClient * client,
bool flushing);
static void gst_cuda_ipc_client_unix_loop (GstCudaIpcClient * client);
#define gst_cuda_ipc_client_unix_parent_class parent_class
G_DEFINE_TYPE (GstCudaIpcClientUnix,
gst_cuda_ipc_client_unix, GST_TYPE_CUDA_IPC_CLIENT);
static void
gst_cuda_ipc_client_unix_class_init (GstCudaIpcClientUnixClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstCudaIpcClientClass *client_class = GST_CUDA_IPC_CLIENT_CLASS (klass);
object_class->finalize = gst_cuda_ipc_client_unix_finalize;
client_class->send_msg =
GST_DEBUG_FUNCPTR (gst_cuda_ipc_client_unix_send_msg);
client_class->wait_msg =
GST_DEBUG_FUNCPTR (gst_cuda_ipc_client_unix_wait_msg);
client_class->terminate =
GST_DEBUG_FUNCPTR (gst_cuda_ipc_client_unix_terminate);
client_class->invoke = GST_DEBUG_FUNCPTR (gst_cuda_ipc_client_unix_invoke);
client_class->set_flushing =
GST_DEBUG_FUNCPTR (gst_cuda_ipc_client_unix_set_flushing);
client_class->loop = GST_DEBUG_FUNCPTR (gst_cuda_ipc_client_unix_loop);
}
static void
gst_cuda_ipc_client_unix_init (GstCudaIpcClientUnix * self)
{
self->priv = new GstCudaIpcClientUnixPrivate ();
}
static void
gst_cuda_ipc_client_unix_finalize (GObject * object)
{
GstCudaIpcClientUnix *self = GST_CUDA_IPC_CLIENT_UNIX (object);
GST_DEBUG_OBJECT (self, "finalize");
delete self->priv;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_cuda_ipc_client_unix_send_msg_finish (GObject * source,
GAsyncResult * result, GstCudaIpcClientConnUnix * conn)
{
GstCudaIpcClient *client = conn->client;
gsize size;
GError *err = nullptr;
bool ret = true;
if (!g_output_stream_write_all_finish (conn->ostream, result, &size, &err)) {
GST_WARNING_OBJECT (client, "Write failed with %s", err->message);
g_clear_error (&err);
ret = false;
}
gst_cuda_ipc_client_send_msg_finish (client, ret);
}
static bool
gst_cuda_ipc_client_unix_send_msg (GstCudaIpcClient * client,
GstCudaIpcClientConn * conn)
{
GstCudaIpcClientConnUnix *unix_conn =
static_cast < GstCudaIpcClientConnUnix * >(conn);
g_output_stream_write_all_async (unix_conn->ostream, &conn->client_msg[0],
conn->client_msg.size (), G_PRIORITY_DEFAULT, unix_conn->cancellable,
(GAsyncReadyCallback) gst_cuda_ipc_client_unix_send_msg_finish,
unix_conn);
return true;
}
static void
gst_cuda_ipc_client_unix_finish_have_mmap_data (GstCudaIpcClient * client,
GstCudaIpcClientConnUnix * conn)
{
GstClockTime pts;
GstCudaIpcMemLayout layout;
GstCudaSharableHandle server_handle = 0;
GstCudaSharableHandle client_handle = 0;
GstCaps *caps = nullptr;
GError *err = nullptr;
std::vector < guint8 > meta;
if (!gst_cuda_ipc_pkt_parse_have_mmap_data (conn->server_msg, pts,
layout, &server_handle, &caps, meta)) {
GST_ERROR_OBJECT (client, "Couldn't parse MMAP-DATA");
goto error;
}
client_handle =
g_unix_connection_receive_fd (G_UNIX_CONNECTION (conn->conn),
conn->cancellable, &err);
if (err) {
GST_ERROR_OBJECT (client, "Couldn't get fd, %s", err->message);
goto error;
}
gst_cuda_ipc_client_have_mmap_data (client, pts, layout, caps,
server_handle, client_handle, meta);
return;
error:
gst_cuda_ipc_client_wait_msg_finish (client, false);
}
static void
gst_cuda_ipc_client_unix_payload_finish (GObject * source,
GAsyncResult * result, GstCudaIpcClientConnUnix * conn)
{
GstCudaIpcClient *client = conn->client;
gsize size;
GError *err = nullptr;
bool ret = true;
GstCudaIpcPacketHeader header;
if (!g_input_stream_read_all_finish (conn->istream, result, &size, &err)) {
GST_WARNING_OBJECT (client, "Read failed with %s", err->message);
g_clear_error (&err);
ret = false;
} else if (!gst_cuda_ipc_pkt_identify (conn->server_msg, header)) {
GST_ERROR_OBJECT (client, "Broken header");
ret = false;
} else if (header.type == GstCudaIpcPktType::HAVE_MMAP_DATA) {
gst_cuda_ipc_client_unix_finish_have_mmap_data (client, conn);
return;
}
gst_cuda_ipc_client_wait_msg_finish (client, ret);
}
static void
gst_cuda_ipc_client_unix_wait_finish (GObject * source,
GAsyncResult * result, GstCudaIpcClientConnUnix * conn)
{
GstCudaIpcClient *client = conn->client;
gsize size;
GError *err = nullptr;
GstCudaIpcPacketHeader header;
if (!g_input_stream_read_all_finish (conn->istream, result, &size, &err)) {
GST_WARNING_OBJECT (client, "Read failed with %s", err->message);
g_clear_error (&err);
gst_cuda_ipc_client_wait_msg_finish (client, false);
return;
}
if (!gst_cuda_ipc_pkt_identify (conn->server_msg, header)) {
GST_ERROR_OBJECT (client, "Broken header");
gst_cuda_ipc_client_wait_msg_finish (client, false);
return;
}
if (header.payload_size == 0) {
gst_cuda_ipc_client_wait_msg_finish (client, true);
return;
}
GST_LOG_OBJECT (client, "Reading payload");
g_input_stream_read_all_async (conn->istream,
&conn->server_msg[0] + GST_CUDA_IPC_PKT_HEADER_SIZE, header.payload_size,
G_PRIORITY_DEFAULT, conn->cancellable,
(GAsyncReadyCallback) gst_cuda_ipc_client_unix_payload_finish, conn);
}
static bool
gst_cuda_ipc_client_unix_wait_msg (GstCudaIpcClient * client,
GstCudaIpcClientConn * conn)
{
GstCudaIpcClientConnUnix *unix_conn =
static_cast < GstCudaIpcClientConnUnix * >(conn);
g_input_stream_read_all_async (unix_conn->istream,
&conn->server_msg[0], GST_CUDA_IPC_PKT_HEADER_SIZE,
G_PRIORITY_DEFAULT, unix_conn->cancellable,
(GAsyncReadyCallback) gst_cuda_ipc_client_unix_wait_finish, unix_conn);
return true;
}
static void
gst_cuda_ipc_client_unix_terminate (GstCudaIpcClient * client)
{
GstCudaIpcClientUnix *self = GST_CUDA_IPC_CLIENT_UNIX (client);
GstCudaIpcClientUnixPrivate *priv = self->priv;
g_main_loop_quit (priv->main_loop);
}
static gboolean
gst_cuda_ipc_client_unix_invoke_func (GstCudaIpcClient * client)
{
gst_cuda_ipc_client_on_idle (client);
return G_SOURCE_REMOVE;
}
static void
gst_cuda_ipc_client_unix_invoke (GstCudaIpcClient * client)
{
GstCudaIpcClientUnix *self = GST_CUDA_IPC_CLIENT_UNIX (client);
GstCudaIpcClientUnixPrivate *priv = self->priv;
g_main_context_invoke (priv->main_context,
(GSourceFunc) gst_cuda_ipc_client_unix_invoke_func, client);
}
static void
gst_cuda_ipc_client_unix_set_flushing (GstCudaIpcClient * client, bool flushing)
{
GstCudaIpcClientUnix *self = GST_CUDA_IPC_CLIENT_UNIX (client);
GstCudaIpcClientUnixPrivate *priv = self->priv;
std::lock_guard < std::mutex > lk (priv->lock);
priv->flushing = flushing;
priv->cond.notify_all ();
}
static void
gst_cuda_ipc_client_unix_loop (GstCudaIpcClient * client)
{
GstCudaIpcClientUnix *self = GST_CUDA_IPC_CLIENT_UNIX (client);
GstCudaIpcClientUnixPrivate *priv = self->priv;
GSocketConnection *socket_conn;
GSocketClient *socket_client;
GSocketAddress *addr;
GError *err = nullptr;
GstClockTime start_time = gst_util_get_timestamp ();
g_main_context_push_thread_default (priv->main_context);
std::unique_lock < std::mutex > lk (priv->lock);
socket_client = g_socket_client_new ();
addr = g_unix_socket_address_new (priv->address.c_str ());
do {
GstClockTime diff;
if (priv->flushing) {
GST_DEBUG_OBJECT (self, "We are flushing");
gst_cuda_ipc_client_abort (client);
return;
}
socket_conn = g_socket_client_connect (socket_client,
G_SOCKET_CONNECTABLE (addr), priv->cancellable, &err);
if (socket_conn)
break;
if (err->code == G_IO_ERROR_CANCELLED) {
GST_DEBUG_OBJECT (self, "Operation cancelled");
g_clear_error (&err);
break;
} else {
GST_DEBUG_OBJECT (self, "Connection failed with error %s", err->message);
g_clear_error (&err);
}
if (priv->timeout > 0) {
diff = gst_util_get_timestamp () - start_time;
if (diff > priv->timeout) {
GST_WARNING_OBJECT (self, "Timeout");
break;
}
}
GST_DEBUG_OBJECT (self, "Sleep for next retry");
priv->cond.wait_for (lk, std::chrono::milliseconds (100));
} while (true);
lk.unlock ();
g_object_unref (socket_client);
g_object_unref (addr);
if (socket_conn) {
GST_DEBUG_OBJECT (self, "Connection established");
auto conn = std::make_shared < GstCudaIpcClientConnUnix > (socket_conn,
priv->cancellable);
gst_cuda_ipc_client_new_connection (client, conn);
} else {
GST_WARNING_OBJECT (self, "Connection failed");
gst_cuda_ipc_client_abort (client);
}
GST_DEBUG_OBJECT (self, "Starting loop");
g_main_loop_run (priv->main_loop);
GST_DEBUG_OBJECT (self, "Exit loop");
g_cancellable_cancel (priv->cancellable);
g_main_context_pop_thread_default (priv->main_context);
}
GstCudaIpcClient *
gst_cuda_ipc_client_new (const gchar * address, GstCudaContext * context,
GstCudaStream * stream, GstCudaIpcIOMode io_mode, guint timeout,
guint buffer_size)
{
GstCudaIpcClient *client;
GstCudaIpcClientUnix *self;
g_return_val_if_fail (address, nullptr);
g_return_val_if_fail (GST_IS_CUDA_CONTEXT (context), nullptr);
self = (GstCudaIpcClientUnix *)
g_object_new (GST_TYPE_CUDA_IPC_CLIENT_UNIX, nullptr);
gst_object_ref_sink (self);
self->priv->address = address;
self->priv->timeout = timeout * GST_SECOND;
client = GST_CUDA_IPC_CLIENT (self);
client->context = (GstCudaContext *) gst_object_ref (context);
if (stream)
client->stream = gst_cuda_stream_ref (stream);
client->io_mode = io_mode;
client->buffer_size = buffer_size;
return client;
}