gstreamer/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12ipcserver.cpp

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/* GStreamer
* Copyright (C) 2024 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 "gstd3d12ipcserver.h"
#include <unordered_map>
#include <mutex>
#include <atomic>
#include <string>
#include <memory>
#include <wrl.h>
GST_DEBUG_CATEGORY_STATIC (gst_d3d12_ipc_server_debug);
#define GST_CAT_DEFAULT gst_d3d12_ipc_server_debug
/* *INDENT-OFF* */
using namespace Microsoft::WRL;
struct GstD3D12IpcServerData
{
~GstD3D12IpcServerData ()
{
if (sample)
gst_sample_unref (sample);
}
GstSample *sample = nullptr;
HANDLE handle = nullptr;
guint64 fence_val = 0;
GstD3D12IpcMemLayout layout;
GstClockTime pts;
guint64 seq_num;
};
struct GstD3D12IpcServerConn : public OVERLAPPED
{
GstD3D12IpcServerConn (HANDLE pipe_handle) : pipe (pipe_handle)
{
OVERLAPPED *parent = static_cast<OVERLAPPED *> (this);
parent->Internal = 0;
parent->InternalHigh = 0;
parent->Offset = 0;
parent->OffsetHigh = 0;
client_msg.resize (GST_D3D12_IPC_PKT_HEADER_SIZE);
server_msg.resize (GST_D3D12_IPC_PKT_HEADER_SIZE);
}
~GstD3D12IpcServerConn()
{
if (pipe != INVALID_HANDLE_VALUE) {
CancelIo (pipe);
DisconnectNamedPipe (pipe);
CloseHandle (pipe);
}
gst_clear_caps (&caps);
}
GstD3D12IpcServer *server;
HANDLE pipe;
GstD3D12IpcPktType type;
std::vector<guint8> client_msg;
std::vector<guint8> server_msg;
std::shared_ptr<GstD3D12IpcServerData> data;
std::vector<std::shared_ptr<GstD3D12IpcServerData>> peer_handles;
GstCaps *caps = nullptr;
guint64 seq_num = 0;
guint id;
bool eos = false;
bool pending_have_data = false;
bool configured = false;
};
struct GstD3D12IpcServerPrivate
{
GstD3D12IpcServerPrivate ()
{
cancellable = CreateEvent (nullptr, TRUE, FALSE, nullptr);
wakeup_event = CreateEvent (nullptr, FALSE, FALSE, nullptr);
shutdown = false;
aborted = false;
}
~GstD3D12IpcServerPrivate ()
{
CloseHandle (cancellable);
CloseHandle (wakeup_event);
if (fence_handle)
CloseHandle (fence_handle);
gst_clear_object (&device);
}
GstD3D12Device *device = nullptr;
gint64 adapter_luid = 0;
std::mutex lock;
guint64 seq_num = 0;
guint next_conn_id = 0;
std::unordered_map<guint, std::shared_ptr<GstD3D12IpcServerConn>> conn_map;
GThread *loop_thread = nullptr;
std::atomic<bool>shutdown;
std::atomic<bool>aborted;
std::shared_ptr<GstD3D12IpcServerData> data;
std::string address;
HANDLE cancellable;
HANDLE wakeup_event;
DWORD pid;
HANDLE fence_handle = nullptr;
};
/* *INDENT-ON* */
struct _GstD3D12IpcServer
{
GstObject parent;
GstD3D12IpcServerPrivate *priv;
};
static void gst_d3d12_ipc_server_dispose (GObject * object);
static void gst_d3d12_ipc_server_finalize (GObject * object);
static void gst_d3d12_ipc_server_on_idle (GstD3D12IpcServer * self);
static void gst_d3d12_ipc_server_send_msg (GstD3D12IpcServer * self,
GstD3D12IpcServerConn * conn);
static void gst_d3d12_ipc_server_wait_msg (GstD3D12IpcServer * self,
GstD3D12IpcServerConn * conn);
#define gst_d3d12_ipc_server_parent_class parent_class
G_DEFINE_TYPE (GstD3D12IpcServer, gst_d3d12_ipc_server, GST_TYPE_OBJECT);
static void
gst_d3d12_ipc_server_class_init (GstD3D12IpcServerClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gst_d3d12_ipc_server_finalize;
object_class->dispose = gst_d3d12_ipc_server_dispose;
GST_DEBUG_CATEGORY_INIT (gst_d3d12_ipc_server_debug, "d3d12ipcserver",
0, "d3d12ipcserver");
}
static void
gst_d3d12_ipc_server_init (GstD3D12IpcServer * self)
{
self->priv = new GstD3D12IpcServerPrivate ();
self->priv->pid = GetCurrentProcessId ();
}
static void
gst_d3d12_ipc_server_dispose (GObject * object)
{
auto self = GST_D3D12_IPC_SERVER (object);
auto priv = self->priv;
GST_DEBUG_OBJECT (self, "dispose");
SetEvent (priv->cancellable);
g_clear_pointer (&priv->loop_thread, g_thread_join);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_d3d12_ipc_server_finalize (GObject * object)
{
auto self = GST_D3D12_IPC_SERVER (object);
GST_DEBUG_OBJECT (self, "finalize");
delete self->priv;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static HANDLE
gst_cuda_ipc_server_win32_create_pipe (GstD3D12IpcServer * self,
OVERLAPPED * overlap, bool &io_pending)
{
auto priv = self->priv;
HANDLE pipe = CreateNamedPipeA (priv->address.c_str (),
PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT,
PIPE_UNLIMITED_INSTANCES, 1024, 1024, 5000, nullptr);
if (pipe == INVALID_HANDLE_VALUE) {
guint last_err = GetLastError ();
auto err = gst_d3d12_ipc_win32_error_to_string (last_err);
GST_ERROR_OBJECT (self, "CreateNamedPipeA failed with 0x%x (%s)",
last_err, err.c_str ());
return INVALID_HANDLE_VALUE;
}
if (ConnectNamedPipe (pipe, overlap)) {
guint last_err = GetLastError ();
auto err = gst_d3d12_ipc_win32_error_to_string (last_err);
GST_ERROR_OBJECT (self, "ConnectNamedPipe failed with 0x%x (%s)",
last_err, err.c_str ());
return INVALID_HANDLE_VALUE;
}
io_pending = false;
guint last_err = GetLastError ();
switch (last_err) {
case ERROR_IO_PENDING:
io_pending = true;
break;
case ERROR_PIPE_CONNECTED:
SetEvent (overlap->hEvent);
break;
default:
{
auto err = gst_d3d12_ipc_win32_error_to_string (last_err);
GST_ERROR_OBJECT (self, "ConnectNamedPipe failed with 0x%x (%s)",
last_err, err.c_str ());
CloseHandle (pipe);
return INVALID_HANDLE_VALUE;
}
}
return pipe;
}
static void
gst_d3d12_ipc_server_close_connection (GstD3D12IpcServer * self,
GstD3D12IpcServerConn * conn)
{
auto priv = self->priv;
GST_DEBUG_OBJECT (self, "Closing conn-id %u", conn->id);
priv->conn_map.erase (conn->id);
if (priv->shutdown && priv->conn_map.empty ()) {
GST_DEBUG_OBJECT (self, "All connection were closed");
SetEvent (priv->cancellable);
}
}
static void
gst_d3d12_ipc_server_have_data (GstD3D12IpcServer * self,
GstD3D12IpcServerConn * conn)
{
GstCaps *caps;
if (!conn->data) {
GST_ERROR_OBJECT (self, "Have no data to send, conn-id: %u", conn->id);
gst_d3d12_ipc_server_close_connection (self, conn);
return;
}
conn->pending_have_data = false;
conn->seq_num = conn->data->seq_num + 1;
caps = gst_sample_get_caps (conn->data->sample);
if (!conn->caps || !gst_caps_is_equal (conn->caps, caps)) {
GST_DEBUG_OBJECT (self, "Sending caps %" GST_PTR_FORMAT " to conn-id %u",
caps, conn->id);
gst_caps_replace (&conn->caps, caps);
} else {
caps = nullptr;
}
GST_LOG_OBJECT (self, "Sending HAVE-DATA with handle \"%p\", conn-id :%u",
conn->data->handle, conn->id);
if (!gst_d3d12_ipc_pkt_build_have_data (conn->server_msg, conn->data->pts,
conn->data->layout, conn->data->handle, conn->data->fence_val,
caps)) {
GST_ERROR_OBJECT (self, "Couldn't build HAVE-DATA pkt, conn-id: %u",
conn->id);
gst_d3d12_ipc_server_close_connection (self, conn);
return;
}
conn->type = GstD3D12IpcPktType::HAVE_DATA;
gst_d3d12_ipc_server_send_msg (self, conn);
}
static bool
gst_d3d12_ipc_server_on_release_data (GstD3D12IpcServer * self,
GstD3D12IpcServerConn * conn)
{
bool found = false;
HANDLE handle = nullptr;
if (!gst_d3d12_ipc_pkt_parse_release_data (conn->client_msg, handle)) {
GST_ERROR_OBJECT (self, "Couldn't parse RELEASE-DATA, conn-id: %u",
conn->id);
return false;
}
GST_LOG_OBJECT (self, "RELEASE-DATA \"%p\", conn-id: %u", handle, conn->id);
for (auto it = conn->peer_handles.begin (); it != conn->peer_handles.end ();
it++) {
auto other = (*it)->handle;
if (handle == other) {
found = true;
conn->peer_handles.erase (it);
break;
}
}
if (!found) {
GST_WARNING_OBJECT (self,
"Unexpected name to remove, conn-id: %u", conn->id);
return false;
}
GST_LOG_OBJECT (self, "Client is holding %" G_GSIZE_FORMAT " handles",
conn->peer_handles.size ());
return true;
}
static void
gst_d3d12_ipc_server_wait_msg_finish (GstD3D12IpcServer * server,
GstD3D12IpcServerConn * conn)
{
GstD3D12IpcPacketHeader header;
if (!gst_d3d12_ipc_pkt_identify (conn->client_msg, header)) {
GST_ERROR_OBJECT (server, "Broken header, conn-id: %u", conn->id);
gst_d3d12_ipc_server_close_connection (server, conn);
return;
}
switch (header.type) {
case GstD3D12IpcPktType::NEED_DATA:
GST_LOG_OBJECT (server, "NEED-DATA, conn-id: %u", conn->id);
if (!conn->data) {
GST_LOG_OBJECT (server, "Wait for available data, conn-id: %u",
conn->id);
conn->pending_have_data = true;
gst_d3d12_ipc_server_on_idle (server);
return;
}
gst_d3d12_ipc_server_have_data (server, conn);
break;
case GstD3D12IpcPktType::READ_DONE:
GST_LOG_OBJECT (server, "READ-DONE, conn-id: %u", conn->id);
if (!conn->data) {
GST_ERROR_OBJECT (server, "Unexpected READ-DATA, conn-id: %u",
conn->id);
gst_d3d12_ipc_server_close_connection (server, conn);
return;
}
conn->peer_handles.push_back (conn->data);
conn->data = nullptr;
gst_d3d12_ipc_server_wait_msg (server, conn);
break;
case GstD3D12IpcPktType::RELEASE_DATA:
GST_LOG_OBJECT (server, "RELEASE-DATA, conn-id: %u", conn->id);
if (!gst_d3d12_ipc_server_on_release_data (server, conn))
gst_d3d12_ipc_server_close_connection (server, conn);
else
gst_d3d12_ipc_server_wait_msg (server, conn);
break;
case GstD3D12IpcPktType::FIN:
GST_DEBUG_OBJECT (server, "FIN, conn-id %u", conn->id);
gst_d3d12_ipc_server_close_connection (server, conn);
break;
default:
GST_ERROR_OBJECT (server, "Unexpected packet, conn-id: %u", conn->id);
gst_d3d12_ipc_server_close_connection (server, conn);
break;
}
}
static void WINAPI
gst_d3d12_ipc_server_payload_finish (DWORD error_code, DWORD size,
OVERLAPPED * overlap)
{
GstD3D12IpcServerConn *conn =
static_cast < GstD3D12IpcServerConn * >(overlap);
auto self = conn->server;
if (error_code != ERROR_SUCCESS) {
auto err = gst_d3d12_ipc_win32_error_to_string (error_code);
GST_WARNING_OBJECT (self, "ReadFileEx callback failed with 0x%x (%s)",
(guint) error_code, err.c_str ());
gst_d3d12_ipc_server_close_connection (self, conn);
return;
}
gst_d3d12_ipc_server_wait_msg_finish (self, conn);
}
static void WINAPI
gst_d3d12_ipc_server_wait_msg_header_finish (DWORD error_code, DWORD size,
OVERLAPPED * overlap)
{
GstD3D12IpcServerConn *conn =
static_cast < GstD3D12IpcServerConn * >(overlap);
auto self = conn->server;
GstD3D12IpcPacketHeader header;
if (error_code != ERROR_SUCCESS) {
auto err = gst_d3d12_ipc_win32_error_to_string (error_code);
GST_WARNING_OBJECT (self, "ReadFileEx callback failed with 0x%x (%s)",
(guint) error_code, err.c_str ());
gst_d3d12_ipc_server_close_connection (self, conn);
return;
}
if (!gst_d3d12_ipc_pkt_identify (conn->client_msg, header)) {
GST_ERROR_OBJECT (self, "Broken header");
gst_d3d12_ipc_server_close_connection (self, conn);
return;
}
if (header.payload_size == 0) {
gst_d3d12_ipc_server_wait_msg_finish (conn->server, conn);
return;
}
GST_LOG_OBJECT (self, "Reading payload");
if (!ReadFileEx (conn->pipe, &conn->client_msg[0] +
GST_D3D12_IPC_PKT_HEADER_SIZE, header.payload_size, conn,
gst_d3d12_ipc_server_payload_finish)) {
guint last_err = GetLastError ();
auto err = gst_d3d12_ipc_win32_error_to_string (last_err);
GST_WARNING_OBJECT (self, "ReadFileEx failed with 0x%x (%s)",
last_err, err.c_str ());
gst_d3d12_ipc_server_close_connection (self, conn);
}
}
static void
gst_d3d12_ipc_server_wait_msg (GstD3D12IpcServer * self,
GstD3D12IpcServerConn * conn)
{
if (!ReadFileEx (conn->pipe, &conn->client_msg[0],
GST_D3D12_IPC_PKT_HEADER_SIZE, conn,
gst_d3d12_ipc_server_wait_msg_header_finish)) {
guint last_err = GetLastError ();
auto err = gst_d3d12_ipc_win32_error_to_string (last_err);
GST_WARNING_OBJECT (self, "ReadFileEx failed with 0x%x (%s)",
last_err, err.c_str ());
gst_d3d12_ipc_server_close_connection (self, conn);
}
}
static void
gst_d3d12_ipc_server_eos (GstD3D12IpcServer * self,
GstD3D12IpcServerConn * conn)
{
gst_d3d12_ipc_pkt_build_eos (conn->server_msg);
conn->eos = true;
conn->type = GstD3D12IpcPktType::EOS;
gst_d3d12_ipc_server_send_msg (self, conn);
}
static void
gst_d3d12_ipc_server_config_data (GstD3D12IpcServer * self,
GstD3D12IpcServerConn * conn)
{
auto priv = self->priv;
GstCaps *caps = gst_sample_get_caps (conn->data->sample);
gst_caps_replace (&conn->caps, caps);
gst_d3d12_ipc_pkt_build_config (conn->server_msg,
priv->pid, priv->adapter_luid, priv->fence_handle, conn->caps);
conn->type = GstD3D12IpcPktType::CONFIG;
GST_LOG_OBJECT (self, "Sending CONFIG, conn-id %u", conn->id);
gst_d3d12_ipc_server_send_msg (self, conn);
}
static void
gst_d3d12_ipc_server_on_idle (GstD3D12IpcServer * self)
{
auto priv = self->priv;
GST_LOG_OBJECT (self, "idle");
if (priv->shutdown) {
GST_DEBUG_OBJECT (self, "We are stopping");
if (priv->conn_map.empty ()) {
GST_DEBUG_OBJECT (self, "All connections were closed");
SetEvent (priv->cancellable);
return;
}
std::vector < std::shared_ptr < GstD3D12IpcServerConn >> to_send_eos;
/* *INDENT-OFF* */
for (auto it : priv->conn_map) {
auto conn = it.second;
if (conn->eos || !conn->pending_have_data)
continue;
to_send_eos.push_back (conn);
}
for (auto it : to_send_eos) {
GST_DEBUG_OBJECT (self, "Sending EOS to conn-id: %u", it->id);
gst_d3d12_ipc_server_eos (self, it.get ());
}
GST_DEBUG_OBJECT (self, "Have %" G_GSIZE_FORMAT " alive connections",
priv->conn_map.size());
size_t num_closed = 0;
for (auto it : priv->conn_map) {
auto conn = it.second;
GST_DEBUG_OBJECT (self, "conn-id %u"
" peer handle size %" G_GSIZE_FORMAT, conn->id,
conn->peer_handles.size ());
/* Cannot erase conn since it's still referenced.
* Manually close connection */
if (conn->peer_handles.empty ()) {
if (conn->pipe != INVALID_HANDLE_VALUE) {
CancelIo (conn->pipe);
DisconnectNamedPipe (conn->pipe);
CloseHandle (conn->pipe);
conn->pipe = INVALID_HANDLE_VALUE;
}
num_closed++;
}
}
/* *INDENT-ON* */
if (priv->conn_map.size () == num_closed) {
GST_DEBUG_OBJECT (self, "All connections were closed");
SetEvent (priv->cancellable);
}
return;
}
if (priv->conn_map.empty ()) {
GST_LOG_OBJECT (self, "Have no connection");
return;
}
std::unique_lock < std::mutex > lk (priv->lock);
if (!priv->data)
return;
/* *INDENT-OFF* */
std::vector < std::shared_ptr < GstD3D12IpcServerConn >> to_config_data;
std::vector < std::shared_ptr < GstD3D12IpcServerConn >> to_send_have_data;
for (auto it : priv->conn_map) {
auto conn = it.second;
if (!conn->configured) {
conn->configured = true;
conn->data = priv->data;
to_config_data.push_back (conn);
} else if (conn->pending_have_data && conn->seq_num <= priv->data->seq_num) {
conn->data = priv->data;
to_send_have_data.push_back (conn);
}
}
lk.unlock ();
for (auto it: to_config_data)
gst_d3d12_ipc_server_config_data (self, it.get ());
for (auto it: to_send_have_data)
gst_d3d12_ipc_server_have_data (self, it.get ());
/* *INDENT-ON* */
}
static void WINAPI
gst_d3d12_ipc_server_send_msg_finish (DWORD error_code, DWORD size,
OVERLAPPED * overlap)
{
GstD3D12IpcServerConn *conn =
static_cast < GstD3D12IpcServerConn * >(overlap);
auto self = conn->server;
if (error_code != ERROR_SUCCESS) {
auto err = gst_d3d12_ipc_win32_error_to_string (error_code);
GST_WARNING_OBJECT (self, "ReadFileEx callback failed with 0x%x (%s)",
(guint) error_code, err.c_str ());
gst_d3d12_ipc_server_close_connection (self, conn);
return;
}
GST_LOG_OBJECT (self, "Sent message");
switch (conn->type) {
case GstD3D12IpcPktType::CONFIG:
GST_DEBUG_OBJECT (self, "Sent CONFIG-DATA, conn-id %u", conn->id);
gst_d3d12_ipc_server_wait_msg (self, conn);
break;
case GstD3D12IpcPktType::HAVE_DATA:
GST_LOG_OBJECT (self, "Sent HAVE-DATA, conn-id %u", conn->id);
gst_d3d12_ipc_server_wait_msg (self, conn);
break;
case GstD3D12IpcPktType::EOS:
GST_DEBUG_OBJECT (self, "Sent EOS, conn-id %u", conn->id);
gst_d3d12_ipc_server_wait_msg (self, conn);
break;
default:
GST_ERROR_OBJECT (self, "Unexpected msg type");
gst_d3d12_ipc_server_close_connection (self, conn);
break;
}
}
static void
gst_d3d12_ipc_server_send_msg (GstD3D12IpcServer * self,
GstD3D12IpcServerConn * conn)
{
GST_LOG_OBJECT (self, "Sending message");
if (!WriteFileEx (conn->pipe, &conn->server_msg[0],
conn->server_msg.size (), conn,
gst_d3d12_ipc_server_send_msg_finish)) {
guint last_err = GetLastError ();
auto err = gst_d3d12_ipc_win32_error_to_string (last_err);
GST_WARNING_OBJECT (self, "WriteFileEx failed with 0x%x (%s)",
last_err, err.c_str ());
gst_d3d12_ipc_server_close_connection (self, conn);
}
}
static void
gst_d3d12_ipc_server_on_incoming_connection (GstD3D12IpcServer * self,
std::shared_ptr < GstD3D12IpcServerConn > conn)
{
auto priv = self->priv;
priv->lock.lock ();
conn->server = self;
conn->id = priv->next_conn_id;
conn->data = priv->data;
priv->next_conn_id++;
priv->lock.unlock ();
GST_DEBUG_OBJECT (self, "New connection, conn-id: %u", conn->id);
/* *INDENT-OFF* */
priv->conn_map.insert ({conn->id, conn});
/* *INDENT-ON* */
if (conn->data) {
conn->configured = true;
gst_d3d12_ipc_server_config_data (self, conn.get ());
} else {
GST_DEBUG_OBJECT (self, "Have no config data yet, waiting for data");
}
}
static gpointer
gst_d3d12_ipc_server_loop_thread_func (GstD3D12IpcServer * self)
{
auto priv = self->priv;
bool io_pending = false;
guint wait_ret;
HANDLE pipe;
OVERLAPPED overlap;
HANDLE waitables[3];
GST_DEBUG_OBJECT (self, "Entering loop");
memset (&overlap, 0, sizeof (OVERLAPPED));
overlap.hEvent = CreateEvent (nullptr, TRUE, TRUE, nullptr);
pipe = gst_cuda_ipc_server_win32_create_pipe (self, &overlap, io_pending);
if (pipe == INVALID_HANDLE_VALUE) {
CloseHandle (overlap.hEvent);
priv->aborted = true;
goto out;
}
waitables[0] = overlap.hEvent;
waitables[1] = priv->wakeup_event;
waitables[2] = priv->cancellable;
do {
wait_ret = WaitForMultipleObjectsEx (G_N_ELEMENTS (waitables), waitables,
FALSE, INFINITE, TRUE);
if (wait_ret == WAIT_OBJECT_0 + 2) {
GST_DEBUG_OBJECT (self, "Operation cancelled");
goto out;
}
switch (wait_ret) {
case WAIT_OBJECT_0:
{
DWORD n_bytes;
if (io_pending
&& !GetOverlappedResult (pipe, &overlap, &n_bytes, FALSE)) {
guint last_err = GetLastError ();
auto err = gst_d3d12_ipc_win32_error_to_string (last_err);
GST_WARNING_OBJECT (self, "GetOverlappedResult failed with 0x%x (%s)",
last_err, err.c_str ());
CloseHandle (pipe);
pipe = INVALID_HANDLE_VALUE;
break;
}
auto conn = std::make_shared < GstD3D12IpcServerConn > (pipe);
conn->server = self;
pipe = INVALID_HANDLE_VALUE;
gst_d3d12_ipc_server_on_incoming_connection (self, conn);
pipe = gst_cuda_ipc_server_win32_create_pipe (self,
&overlap, io_pending);
break;
}
case WAIT_IO_COMPLETION:
break;
case WAIT_OBJECT_0 + 1:
gst_d3d12_ipc_server_on_idle (self);
break;
default:
{
guint last_err = GetLastError ();
auto err = gst_d3d12_ipc_win32_error_to_string (last_err);
GST_ERROR_OBJECT (self,
"WaitForMultipleObjectsEx return 0x%x, last error 0x%x (%s)",
wait_ret, last_err, err.c_str ());
priv->aborted = true;
goto out;
}
}
} while (true);
out:
if (pipe != INVALID_HANDLE_VALUE) {
CancelIo (pipe);
DisconnectNamedPipe (pipe);
CloseHandle (pipe);
}
CloseHandle (overlap.hEvent);
priv->conn_map.clear ();
GST_DEBUG_OBJECT (self, "Exit loop thread");
return nullptr;
}
GstFlowReturn
gst_d3d12_ipc_server_send_data (GstD3D12IpcServer * server, GstSample * sample,
const GstD3D12IpcMemLayout & layout, HANDLE handle, GstClockTime pts)
{
GstD3D12IpcServerPrivate *priv;
g_return_val_if_fail (GST_IS_D3D12_IPC_SERVER (server), GST_FLOW_ERROR);
g_return_val_if_fail (GST_IS_SAMPLE (sample), GST_FLOW_ERROR);
priv = server->priv;
GST_LOG_OBJECT (server, "Sending data");
std::unique_lock < std::mutex > lk (priv->lock);
if (priv->aborted) {
GST_DEBUG_OBJECT (server, "Was aborted");
return GST_FLOW_ERROR;
}
auto buffer = gst_sample_get_buffer (sample);
auto dmem = (GstD3D12Memory *) gst_buffer_peek_memory (buffer, 0);
auto data = std::make_shared < GstD3D12IpcServerData > ();
data->sample = gst_sample_ref (sample);
data->handle = handle;
data->layout = layout;
data->pts = pts;
data->fence_val = dmem->fence_value;
data->seq_num = priv->seq_num;
priv->seq_num++;
priv->data = data;
lk.unlock ();
SetEvent (priv->wakeup_event);
return GST_FLOW_OK;
}
void
gst_d3d12_ipc_server_stop (GstD3D12IpcServer * server)
{
GstD3D12IpcServerPrivate *priv;
g_return_if_fail (GST_IS_D3D12_IPC_SERVER (server));
priv = server->priv;
GST_DEBUG_OBJECT (server, "Stopping");
priv->shutdown = true;
SetEvent (priv->wakeup_event);
g_clear_pointer (&priv->loop_thread, g_thread_join);
GST_DEBUG_OBJECT (server, "Stopped");
}
GstD3D12IpcServer *
gst_d3d12_ipc_server_new (const std::string & address, gint64 adapter_luid,
ID3D12Fence * fence)
{
ComPtr < ID3D12Device > device;
auto hr = fence->GetDevice (IID_PPV_ARGS (&device));
if (FAILED (hr)) {
GST_ERROR ("Couldn't get device handle");
return nullptr;
}
HANDLE fence_handle;
hr = device->CreateSharedHandle (fence, nullptr, GENERIC_ALL, nullptr,
&fence_handle);
if (FAILED (hr)) {
GST_ERROR ("Couldn't open shared handle");
return nullptr;
}
auto self = (GstD3D12IpcServer *)
g_object_new (GST_TYPE_D3D12_IPC_SERVER, nullptr);
gst_object_ref_sink (self);
auto priv = self->priv;
priv->address = address;
priv->adapter_luid = adapter_luid;
priv->fence_handle = fence_handle;
priv->loop_thread = g_thread_new ("d3d12-ipc-server",
(GThreadFunc) gst_d3d12_ipc_server_loop_thread_func, self);
return self;
}
gint64
gst_d3d12_ipc_server_get_adapter_luid (GstD3D12IpcServer * server)
{
g_return_val_if_fail (GST_IS_D3D12_IPC_SERVER (server), 0);
return server->priv->adapter_luid;
}