gstreamer/subprojects/gst-plugins-bad/sys/d3d12/gstd3d12ipcsink.cpp
2024-03-25 11:41:25 +00:00

706 lines
20 KiB
C++

/* 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.
*/
/**
* SECTION:element-d3d12ipcsink
* @title: d3d12ipcsink
* @short_description: Direct3D12 Inter Process Communication (IPC) sink
*
* d3d12ipcsink exports Direct3D12 texture for connected d3d12ipcsrc elements
* to be able to import it
*
* ## Example launch line
* ```
* gst-launch-1.0 videotestsrc ! d3d12upload ! d3d12ipcsink
* ```
*
* Since: 1.26
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstd3d12ipcsink.h"
#include "gstd3d12ipcserver.h"
#include "gstd3d12pluginutils.h"
#include <mutex>
#include <string>
#include <vector>
#include <wrl.h>
/* *INDENT-OFF* */
using namespace Microsoft::WRL;
/* *INDENT-ON* */
GST_DEBUG_CATEGORY_STATIC (gst_d3d12_ipc_sink_debug);
#define GST_CAT_DEFAULT gst_d3d12_ipc_sink_debug
static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE_WITH_FEATURES
(GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY, GST_D3D12_IPC_FORMATS) ";"
GST_VIDEO_CAPS_MAKE (GST_D3D12_IPC_FORMATS)));
enum
{
PROP_0,
PROP_ADAPTER,
PROP_PIPE_NAME,
};
#define DEFAULT_ADAPTER -1
#define DEFAULT_PIPE_NAME "\\\\.\\pipe\\gst.d3d12.ipc"
/* *INDENT-OFF* */
struct GstD3D12IpcSinkPrivate
{
GstD3D12Device *device = nullptr;
GstBufferPool *fallback_pool = nullptr;
GstVideoInfo info;
GstD3D12IpcServer *server = nullptr;
GstCaps *caps = nullptr;
GstSample *prepared_sample = nullptr;
HANDLE prepared_handle = nullptr;
GstD3D12IpcMemLayout layout;
std::mutex lock;
/* properties */
gint adapter = DEFAULT_ADAPTER;
std::string pipe_name = DEFAULT_PIPE_NAME;
};
/* *INDENT-ON* */
struct _GstD3D12IpcSink
{
GstBaseSink parent;
GstD3D12IpcSinkPrivate *priv;
};
static void gst_d3d12_ipc_sink_finalize (GObject * object);
static void gst_d3d12_ipc_sink_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_win32_video_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static GstClock *gst_d3d12_ipc_sink_provide_clock (GstElement * elem);
static void gst_d3d12_ipc_sink_set_context (GstElement * elem,
GstContext * context);
static gboolean gst_d3d12_ipc_sink_start (GstBaseSink * sink);
static gboolean gst_d3d12_ipc_sink_stop (GstBaseSink * sink);
static gboolean gst_d3d12_ipc_sink_set_caps (GstBaseSink * sink,
GstCaps * caps);
static void gst_d3d12_ipc_sink_get_time (GstBaseSink * sink, GstBuffer * buf,
GstClockTime * start, GstClockTime * end);
static gboolean gst_d3d12_ipc_sink_propose_allocation (GstBaseSink * sink,
GstQuery * query);
static gboolean gst_d3d12_ipc_sink_query (GstBaseSink * sink, GstQuery * query);
static GstFlowReturn gst_d3d12_ipc_sink_prepare (GstBaseSink * sink,
GstBuffer * buf);
static GstFlowReturn gst_d3d12_ipc_sink_render (GstBaseSink * sink,
GstBuffer * buf);
#define gst_d3d12_ipc_sink_parent_class parent_class
G_DEFINE_TYPE (GstD3D12IpcSink, gst_d3d12_ipc_sink, GST_TYPE_BASE_SINK);
static void
gst_d3d12_ipc_sink_class_init (GstD3D12IpcSinkClass * klass)
{
auto object_class = G_OBJECT_CLASS (klass);
auto element_class = GST_ELEMENT_CLASS (klass);
auto sink_class = GST_BASE_SINK_CLASS (klass);
object_class->finalize = gst_d3d12_ipc_sink_finalize;
object_class->set_property = gst_d3d12_ipc_sink_set_property;
object_class->get_property = gst_win32_video_sink_get_property;
g_object_class_install_property (object_class, PROP_ADAPTER,
g_param_spec_int ("adapter", "Adapter",
"DXGI adapter index (-1 for default)",
-1, G_MAXINT32, DEFAULT_ADAPTER,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (object_class, PROP_PIPE_NAME,
g_param_spec_string ("pipe-name", "Pipe Name",
"The name of Win32 named pipe to communicate with clients. "
"Validation of the pipe name is caller's responsibility",
DEFAULT_PIPE_NAME, (GParamFlags) (G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS | GST_PARAM_MUTABLE_READY)));
gst_element_class_set_static_metadata (element_class,
"Direct3D12 IPC Sink", "Sink/Video",
"Sends Direct3D12 shared handle to peer d3d12ipcsrc elements",
"Seungha Yang <seungha@centricular.com>");
gst_element_class_add_static_pad_template (element_class, &sink_template);
element_class->provide_clock =
GST_DEBUG_FUNCPTR (gst_d3d12_ipc_sink_provide_clock);
element_class->set_context =
GST_DEBUG_FUNCPTR (gst_d3d12_ipc_sink_set_context);
sink_class->start = GST_DEBUG_FUNCPTR (gst_d3d12_ipc_sink_start);
sink_class->stop = GST_DEBUG_FUNCPTR (gst_d3d12_ipc_sink_stop);
sink_class->set_caps = GST_DEBUG_FUNCPTR (gst_d3d12_ipc_sink_set_caps);
sink_class->propose_allocation =
GST_DEBUG_FUNCPTR (gst_d3d12_ipc_sink_propose_allocation);
sink_class->query = GST_DEBUG_FUNCPTR (gst_d3d12_ipc_sink_query);
sink_class->get_times = GST_DEBUG_FUNCPTR (gst_d3d12_ipc_sink_get_time);
sink_class->prepare = GST_DEBUG_FUNCPTR (gst_d3d12_ipc_sink_prepare);
sink_class->render = GST_DEBUG_FUNCPTR (gst_d3d12_ipc_sink_render);
GST_DEBUG_CATEGORY_INIT (gst_d3d12_ipc_sink_debug, "d3d12ipcsink",
0, "d3d12ipcsink");
}
static void
gst_d3d12_ipc_sink_init (GstD3D12IpcSink * self)
{
self->priv = new GstD3D12IpcSinkPrivate ();
GST_OBJECT_FLAG_SET (self, GST_ELEMENT_FLAG_PROVIDE_CLOCK);
GST_OBJECT_FLAG_SET (self, GST_ELEMENT_FLAG_REQUIRE_CLOCK);
}
static void
gst_d3d12_ipc_sink_finalize (GObject * object)
{
auto self = GST_D3D12_IPC_SINK (object);
delete self->priv;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_d3d12_ipc_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
auto self = GST_D3D12_IPC_SINK (object);
auto priv = self->priv;
std::lock_guard < std::mutex > lk (priv->lock);
switch (prop_id) {
case PROP_ADAPTER:
priv->adapter = g_value_get_int (value);
break;
case PROP_PIPE_NAME:
{
const gchar *pipe_name = g_value_get_string (value);
priv->pipe_name.clear ();
if (pipe_name)
priv->pipe_name = pipe_name;
else
priv->pipe_name = DEFAULT_PIPE_NAME;
break;
}
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_win32_video_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
auto self = GST_D3D12_IPC_SINK (object);
auto priv = self->priv;
std::lock_guard < std::mutex > lk (priv->lock);
switch (prop_id) {
case PROP_ADAPTER:
g_value_set_int (value, priv->adapter);
break;
case PROP_PIPE_NAME:
g_value_set_string (value, priv->pipe_name.c_str ());
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstClock *
gst_d3d12_ipc_sink_provide_clock (GstElement * elem)
{
return gst_system_clock_obtain ();
}
static void
gst_d3d12_ipc_sink_set_context (GstElement * elem, GstContext * context)
{
auto self = GST_D3D12_IPC_SINK (elem);
auto priv = self->priv;
gst_d3d12_handle_set_context (elem, context, priv->adapter, &priv->device);
GST_ELEMENT_CLASS (parent_class)->set_context (elem, context);
}
static gboolean
gst_d3d12_ipc_sink_start (GstBaseSink * sink)
{
auto self = GST_D3D12_IPC_SINK (sink);
auto priv = self->priv;
GST_DEBUG_OBJECT (self, "Start");
if (!gst_d3d12_ensure_element_data (GST_ELEMENT_CAST (self), priv->adapter,
&priv->device)) {
GST_ERROR_OBJECT (sink, "Cannot create d3d12device");
return FALSE;
}
return TRUE;
}
static gboolean
gst_d3d12_ipc_sink_stop (GstBaseSink * sink)
{
auto self = GST_D3D12_IPC_SINK (sink);
auto priv = self->priv;
GST_DEBUG_OBJECT (self, "Stop");
if (priv->server)
gst_d3d12_ipc_server_stop (priv->server);
gst_clear_object (&priv->server);
GST_DEBUG_OBJECT (self, "Server cleared");
if (priv->fallback_pool) {
gst_buffer_pool_set_active (priv->fallback_pool, FALSE);
gst_clear_object (&priv->fallback_pool);
}
gst_clear_sample (&priv->prepared_sample);
gst_clear_object (&priv->device);
return TRUE;
}
static void
gst_d3d12_ipc_sink_get_time (GstBaseSink * sink, GstBuffer * buf,
GstClockTime * start, GstClockTime * end)
{
auto self = GST_D3D12_IPC_SINK (sink);
auto priv = self->priv;
GstClockTime timestamp;
timestamp = GST_BUFFER_PTS (buf);
if (!GST_CLOCK_TIME_IS_VALID (timestamp))
timestamp = GST_BUFFER_DTS (buf);
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
*start = timestamp;
if (GST_BUFFER_DURATION_IS_VALID (buf)) {
*end = timestamp + GST_BUFFER_DURATION (buf);
} else if (priv->info.fps_n > 0) {
*end = timestamp +
gst_util_uint64_scale_int (GST_SECOND, priv->info.fps_d,
priv->info.fps_n);
} else if (sink->segment.rate < 0) {
*end = timestamp;
}
}
}
static GstBufferPool *
gst_d3d12_ipc_sink_create_pool (GstD3D12IpcSink * self,
const GstVideoInfo * info, GstCaps * caps)
{
auto priv = self->priv;
auto pool = gst_d3d12_buffer_pool_new (priv->device);
auto config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
gst_buffer_pool_config_set_params (config, priv->caps,
GST_VIDEO_INFO_SIZE (info), 0, 0);
auto params = gst_d3d12_allocation_params_new (priv->device, &priv->info,
GST_D3D12_ALLOCATION_FLAG_DEFAULT,
D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS |
D3D12_RESOURCE_FLAG_ALLOW_RENDER_TARGET, D3D12_HEAP_FLAG_SHARED);
gst_buffer_pool_config_set_d3d12_allocation_params (config, params);
gst_d3d12_allocation_params_free (params);
if (!gst_buffer_pool_set_config (pool, config)) {
GST_ERROR_OBJECT (self, "Couldn't set pool config");
gst_object_unref (pool);
return nullptr;
}
return pool;
}
static gboolean
gst_d3d12_ipc_sink_set_caps (GstBaseSink * sink, GstCaps * caps)
{
auto self = GST_D3D12_IPC_SINK (sink);
auto priv = self->priv;
GstCaps *new_caps;
GstStructure *s;
const gchar *str;
GST_DEBUG_OBJECT (self, "New caps %" GST_PTR_FORMAT, caps);
if (!gst_video_info_from_caps (&priv->info, caps)) {
GST_ERROR_OBJECT (self, "Invalid caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
if (priv->fallback_pool) {
gst_buffer_pool_set_active (priv->fallback_pool, FALSE);
gst_clear_object (&priv->fallback_pool);
}
s = gst_caps_get_structure (caps, 0);
/* Takes values we know it's always deserializable */
new_caps = gst_caps_new_empty_simple ("video/x-raw");
gst_caps_set_simple (new_caps, "format", G_TYPE_STRING,
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (&priv->info)),
"width", G_TYPE_INT, priv->info.width,
"height", G_TYPE_INT, priv->info.height,
"framerate", GST_TYPE_FRACTION, priv->info.fps_n, priv->info.fps_d,
"pixel-aspect-ratio", GST_TYPE_FRACTION, priv->info.par_n,
priv->info.par_d, nullptr);
str = gst_structure_get_string (s, "colorimetry");
if (str)
gst_caps_set_simple (new_caps, "colorimetry", G_TYPE_STRING, str, nullptr);
str = gst_structure_get_string (s, "mastering-display-info");
if (str) {
gst_caps_set_simple (new_caps, "mastering-display-info", G_TYPE_STRING,
str, nullptr);
}
str = gst_structure_get_string (s, "content-light-level");
if (str) {
gst_caps_set_simple (new_caps, "content-light-level", G_TYPE_STRING,
str, nullptr);
}
gst_caps_set_features_simple (new_caps,
gst_caps_features_new (GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY, nullptr));
gst_clear_caps (&priv->caps);
priv->caps = new_caps;
return TRUE;
}
static gboolean
gst_d3d12_ipc_sink_propose_allocation (GstBaseSink * sink, GstQuery * query)
{
auto self = GST_D3D12_IPC_SINK (sink);
GstCaps *caps;
GstBufferPool *pool = nullptr;
GstVideoInfo info;
guint size;
gboolean need_pool;
gst_query_parse_allocation (query, &caps, &need_pool);
if (!caps) {
GST_WARNING_OBJECT (sink, "No caps specified");
return FALSE;
}
if (!gst_video_info_from_caps (&info, caps)) {
GST_WARNING_OBJECT (sink, "Invalid caps %" GST_PTR_FORMAT, caps);
return FALSE;
}
/* the normal size of a frame */
size = info.size;
if (need_pool) {
auto features = gst_caps_get_features (caps, 0);
if (features
&& gst_caps_features_contains (features,
GST_CAPS_FEATURE_MEMORY_D3D12_MEMORY)) {
GST_DEBUG_OBJECT (self, "upstream support d3d12 memory");
pool = gst_d3d12_ipc_sink_create_pool (self, &info, caps);
if (!pool) {
GST_ERROR_OBJECT (self, "Couldn't create pool");
return FALSE;
}
auto config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get_params (config, nullptr, &size, nullptr,
nullptr);
gst_structure_free (config);
} else {
pool = gst_video_buffer_pool_new ();
auto config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_ALIGNMENT);
gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
if (!gst_buffer_pool_set_config (pool, config)) {
GST_ERROR_OBJECT (pool, "Couldn't set config");
gst_object_unref (pool);
return FALSE;
}
}
}
gst_query_add_allocation_pool (query, pool, size, 0, 0);
gst_clear_object (&pool);
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
return TRUE;
}
static gboolean
gst_d3d12_ipc_sink_query (GstBaseSink * sink, GstQuery * query)
{
auto self = GST_D3D12_IPC_SINK (sink);
auto priv = self->priv;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
if (gst_d3d12_handle_context_query (GST_ELEMENT (self), query,
priv->device)) {
return TRUE;
}
break;
default:
break;
}
return GST_BASE_SINK_CLASS (parent_class)->query (sink, query);
}
static GstBuffer *
gst_d3d12_ipc_upload (GstD3D12IpcSink * self, GstBuffer * buf)
{
auto priv = self->priv;
GstBuffer *uploaded = nullptr;
GstFlowReturn ret;
GstMemory *mem;
mem = gst_buffer_peek_memory (buf, 0);
if (gst_is_d3d12_memory (mem)) {
auto dmem = GST_D3D12_MEMORY_CAST (mem);
if (dmem->device == priv->device) {
D3D12_RESOURCE_DESC desc;
D3D12_HEAP_FLAGS heap_flags = D3D12_HEAP_FLAG_NONE;
auto resource = gst_d3d12_memory_get_resource_handle (dmem);
desc = GetDesc (resource);
resource->GetHeapProperties (nullptr, &heap_flags);
if ((desc.Flags & D3D12_RESOURCE_FLAG_ALLOW_SIMULTANEOUS_ACCESS) != 0 &&
(heap_flags & D3D12_HEAP_FLAG_SHARED) != 0) {
return gst_buffer_ref (buf);
}
}
}
if (!priv->fallback_pool) {
priv->fallback_pool = gst_d3d12_ipc_sink_create_pool (self, &priv->info,
priv->caps);
if (!priv->fallback_pool) {
GST_ERROR_OBJECT (self, "Couldn't create fallback pool");
return nullptr;
}
if (!gst_buffer_pool_set_active (priv->fallback_pool, TRUE)) {
GST_ERROR_OBJECT (self, "Couldn't active pool");
gst_clear_object (&priv->fallback_pool);
return nullptr;
}
}
ret = gst_buffer_pool_acquire_buffer (priv->fallback_pool,
&uploaded, nullptr);
if (ret != GST_FLOW_OK) {
GST_ERROR_OBJECT (self, "Couldn't acquire fallback buffer");
return nullptr;
}
if (!gst_d3d12_buffer_copy_into (uploaded, buf, &priv->info)) {
GST_ERROR_OBJECT (self, "Couldn't copy buffer");
gst_buffer_unref (uploaded);
return nullptr;
}
return uploaded;
}
static gboolean
gst_d3d12_ipc_sink_ensure_server (GstD3D12IpcSink * self, GstBuffer * buffer)
{
auto priv = self->priv;
GstMemory *mem;
gint64 adapter_luid;
if (priv->server)
return TRUE;
g_object_get (priv->device, "adapter-luid", &adapter_luid, nullptr);
mem = gst_buffer_peek_memory (buffer, 0);
if (gst_is_d3d12_memory (mem)) {
GstD3D12Memory *dmem = GST_D3D12_MEMORY_CAST (mem);
if (dmem->device != priv->device) {
g_object_get (dmem->device, "adapter-luid", &adapter_luid, nullptr);
gst_object_unref (priv->device);
priv->device = (GstD3D12Device *) gst_object_ref (dmem->device);
}
}
auto queue = gst_d3d12_device_get_command_queue (priv->device,
D3D12_COMMAND_LIST_TYPE_DIRECT);
ComPtr < ID3D12Fence > fence;
gst_d3d12_command_queue_get_fence (queue, &fence);
priv->server = gst_d3d12_ipc_server_new (priv->pipe_name, adapter_luid,
fence.Get ());
if (!priv->server) {
GST_ERROR_OBJECT (self, "Couldn't create server");
return FALSE;
}
return TRUE;
}
static GstFlowReturn
gst_d3d12_ipc_sink_prepare (GstBaseSink * sink, GstBuffer * buf)
{
auto self = GST_D3D12_IPC_SINK (sink);
auto priv = self->priv;
GstBuffer *uploaded;
GstD3D12Memory *dmem;
GstVideoFrame frame;
HANDLE nt_handle = nullptr;
gst_clear_sample (&priv->prepared_sample);
if (!gst_d3d12_ipc_sink_ensure_server (self, buf))
return GST_FLOW_ERROR;
uploaded = gst_d3d12_ipc_upload (self, buf);
if (!uploaded) {
GST_ERROR_OBJECT (self, "Couldn't upload buffer");
return GST_FLOW_ERROR;
}
dmem = (GstD3D12Memory *) gst_buffer_peek_memory (uploaded, 0);
/* Upload staging to device memory */
if (!gst_video_frame_map (&frame, &priv->info, uploaded,
(GstMapFlags) (GST_MAP_READ | GST_MAP_D3D12))) {
GST_ERROR_OBJECT (self, "Couldn't upload memory");
gst_buffer_unref (uploaded);
return GST_FLOW_ERROR;
}
priv->layout.pitch = frame.info.stride[0];
for (guint i = 0; i < GST_VIDEO_FRAME_N_PLANES (&frame); i++)
priv->layout.offset[i] = frame.info.offset[i];
gst_video_frame_unmap (&frame);
if (!gst_d3d12_memory_get_nt_handle (dmem, &nt_handle)) {
GST_ERROR_OBJECT (self, "Couldn't get NT handle");
gst_buffer_unref (uploaded);
return GST_FLOW_ERROR;
}
priv->prepared_sample = gst_sample_new (uploaded,
priv->caps, nullptr, nullptr);
priv->prepared_handle = nt_handle;
gst_buffer_unref (uploaded);
return GST_FLOW_OK;
}
static GstFlowReturn
gst_d3d12_ipc_sink_render (GstBaseSink * sink, GstBuffer * buf)
{
auto self = GST_D3D12_IPC_SINK (sink);
auto priv = self->priv;
GstClockTime pts;
GstClockTime now_system;
GstClockTime buf_pts;
GstClockTime buffer_clock = GST_CLOCK_TIME_NONE;
GstFlowReturn ret;
if (!priv->prepared_sample) {
GST_ERROR_OBJECT (self, "Have no prepared sample");
return GST_FLOW_ERROR;
}
pts = now_system = gst_util_get_timestamp ();
buf_pts = GST_BUFFER_PTS (buf);
if (!GST_CLOCK_TIME_IS_VALID (buf_pts))
buf_pts = GST_BUFFER_DTS (buf);
if (GST_CLOCK_TIME_IS_VALID (buf_pts)) {
buffer_clock = gst_segment_to_running_time (&sink->segment,
GST_FORMAT_TIME, buf_pts) +
GST_ELEMENT_CAST (sink)->base_time + gst_base_sink_get_latency (sink);
}
if (GST_CLOCK_TIME_IS_VALID (buffer_clock)) {
GstClock *clock = gst_element_get_clock (GST_ELEMENT_CAST (sink));
if (!gst_d3d12_ipc_clock_is_system (clock)) {
GstClockTime now_gst = gst_clock_get_time (clock);
GstClockTimeDiff converted = buffer_clock;
converted -= now_gst;
converted += now_system;
if (converted < 0) {
/* Shouldn't happen */
GST_WARNING_OBJECT (self, "Negative buffer clock");
pts = 0;
} else {
pts = converted;
}
} else {
/* buffer clock is already system time */
pts = buffer_clock;
}
gst_object_unref (clock);
}
ret = gst_d3d12_ipc_server_send_data (priv->server, priv->prepared_sample,
priv->layout, priv->prepared_handle, pts);
return ret;
}