gstreamer/subprojects/gst-plugins-bad/sys/nvcodec/gstcudaipcsink.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.
*/
/**
* SECTION:element-cudaipcsink
* @title: cudaipcsink
* @short_description: CUDA Inter Process Communication (IPC) sink
*
* cudaipcsink exports CUDA memory for connected cudaipcsrc elements to be able
* to import it
*
* ## Example launch line
* ```
* gst-launch-1.0 videotestsrc ! cudaupload ! cudaipcsink
* ```
*
* Since: 1.24
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstcudaipcsink.h"
#include "gstcudaformat.h"
#include <gst/cuda/gstcuda-private.h>
#include <mutex>
#include <string>
#include <vector>
#ifdef G_OS_WIN32
#include "gstcudaipcserver_win32.h"
#else
#include "gstcudaipcserver_unix.h"
#endif
GST_DEBUG_CATEGORY_STATIC (cuda_ipc_sink_debug);
#define GST_CAT_DEFAULT cuda_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_CUDA_MEMORY, GST_CUDA_FORMATS) "; "
GST_VIDEO_CAPS_MAKE (GST_CUDA_FORMATS)));
enum
{
PROP_0,
PROP_DEVICE_ID,
PROP_ADDRESS,
PROP_IPC_MODE,
};
#define DEFAULT_DEVICE_ID -1
#ifdef G_OS_WIN32
#define DEFAULT_ADDRESS "\\\\.\\pipe\\gst.cuda.ipc"
#else
#define DEFAULT_ADDRESS "/tmp/gst.cuda.ipc"
#endif
#define DEFAULT_IPC_MODE GST_CUDA_IPC_LEGACY
/* *INDENT-OFF* */
struct GstCudaIpcSinkPrivate
{
GstCudaIpcSinkPrivate ()
{
meta = g_byte_array_new ();
}
~GstCudaIpcSinkPrivate ()
{
g_byte_array_unref (meta);
}
GstCudaContext *context = nullptr;
GstCudaStream *stream = nullptr;
GstBufferPool *fallback_pool = nullptr;
GstVideoInfo info;
GstCudaIpcServer *server = nullptr;
GstCaps *caps = nullptr;
GstSample *prepared_sample = nullptr;
GstVideoInfo mem_info;
CUipcMemHandle prepared_handle;
GstCudaSharableHandle prepared_os_handle;
GByteArray *meta;
std::mutex lock;
/* properties */
gint device_id = DEFAULT_DEVICE_ID;
std::string address = DEFAULT_ADDRESS;
GstCudaIpcMode ipc_mode = DEFAULT_IPC_MODE;
GstCudaIpcMode configured_ipc_mode = DEFAULT_IPC_MODE;
};
/* *INDENT-ON* */
struct _GstCudaIpcSink
{
GstBaseSink parent;
GstCudaIpcSinkPrivate *priv;
};
static void gst_cuda_ipc_sink_finalize (GObject * object);
static void gst_cuda_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_cuda_ipc_sink_provide_clock (GstElement * elem);
static void gst_cuda_ipc_sink_set_context (GstElement * elem,
GstContext * context);
static gboolean gst_cuda_ipc_sink_start (GstBaseSink * sink);
static gboolean gst_cuda_ipc_sink_stop (GstBaseSink * sink);
static gboolean gst_cuda_ipc_sink_set_caps (GstBaseSink * sink, GstCaps * caps);
static void gst_cuda_ipc_sink_get_time (GstBaseSink * sink,
GstBuffer * buf, GstClockTime * start, GstClockTime * end);
static gboolean gst_cuda_ipc_sink_propose_allocation (GstBaseSink * sink,
GstQuery * query);
static gboolean gst_cuda_ipc_sink_query (GstBaseSink * sink, GstQuery * query);
static GstFlowReturn gst_cuda_ipc_sink_prepare (GstBaseSink * sink,
GstBuffer * buf);
static GstFlowReturn gst_cuda_ipc_sink_render (GstBaseSink * sink,
GstBuffer * buf);
#define gst_cuda_ipc_sink_parent_class parent_class
G_DEFINE_TYPE (GstCudaIpcSink, gst_cuda_ipc_sink, GST_TYPE_BASE_SINK);
static void
gst_cuda_ipc_sink_class_init (GstCudaIpcSinkClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstBaseSinkClass *sink_class = GST_BASE_SINK_CLASS (klass);
object_class->finalize = gst_cuda_ipc_sink_finalize;
object_class->set_property = gst_cuda_ipc_sink_set_property;
object_class->get_property = gst_win32_video_sink_get_property;
g_object_class_install_property (object_class, PROP_DEVICE_ID,
g_param_spec_int ("cuda-device-id", "CUDA Device ID",
"CUDA device id to use (-1 = auto)", -1, G_MAXINT, DEFAULT_DEVICE_ID,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (object_class, PROP_ADDRESS,
g_param_spec_string ("address", "Address",
"Server address. Specifies name of WIN32 named pipe "
"or unix domain socket path on Linux",
DEFAULT_ADDRESS, (GParamFlags) (G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS | GST_PARAM_MUTABLE_READY)));
g_object_class_install_property (object_class, PROP_IPC_MODE,
g_param_spec_enum ("ipc-mode", "IPC Mode",
"IPC mode to use", GST_TYPE_CUDA_IPC_MODE, DEFAULT_IPC_MODE,
(GParamFlags) (G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
G_PARAM_STATIC_STRINGS)));
gst_element_class_set_static_metadata (element_class,
"CUDA IPC Sink", "Sink/Video",
"Send CUDA memory to peer cudaipcsrc 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_cuda_ipc_sink_provide_clock);
element_class->set_context =
GST_DEBUG_FUNCPTR (gst_cuda_ipc_sink_set_context);
sink_class->start = GST_DEBUG_FUNCPTR (gst_cuda_ipc_sink_start);
sink_class->stop = GST_DEBUG_FUNCPTR (gst_cuda_ipc_sink_stop);
sink_class->set_caps = GST_DEBUG_FUNCPTR (gst_cuda_ipc_sink_set_caps);
sink_class->propose_allocation =
GST_DEBUG_FUNCPTR (gst_cuda_ipc_sink_propose_allocation);
sink_class->query = GST_DEBUG_FUNCPTR (gst_cuda_ipc_sink_query);
sink_class->get_times = GST_DEBUG_FUNCPTR (gst_cuda_ipc_sink_get_time);
sink_class->prepare = GST_DEBUG_FUNCPTR (gst_cuda_ipc_sink_prepare);
sink_class->render = GST_DEBUG_FUNCPTR (gst_cuda_ipc_sink_render);
GST_DEBUG_CATEGORY_INIT (cuda_ipc_sink_debug, "cudaipcsink",
0, "cudaipcsink");
gst_type_mark_as_plugin_api (GST_TYPE_CUDA_IPC_MODE, (GstPluginAPIFlags) 0);
}
static void
gst_cuda_ipc_sink_init (GstCudaIpcSink * self)
{
self->priv = new GstCudaIpcSinkPrivate ();
GST_OBJECT_FLAG_SET (self, GST_ELEMENT_FLAG_PROVIDE_CLOCK);
GST_OBJECT_FLAG_SET (self, GST_ELEMENT_FLAG_REQUIRE_CLOCK);
}
static void
gst_cuda_ipc_sink_finalize (GObject * object)
{
GstCudaIpcSink *self = GST_CUDA_IPC_SINK (object);
delete self->priv;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_cuda_ipc_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstCudaIpcSink *self = GST_CUDA_IPC_SINK (object);
GstCudaIpcSinkPrivate *priv = self->priv;
std::lock_guard < std::mutex > lk (priv->lock);
switch (prop_id) {
case PROP_DEVICE_ID:
priv->device_id = g_value_get_int (value);
break;
case PROP_ADDRESS:
{
const gchar *address = g_value_get_string (value);
priv->address.clear ();
if (address)
priv->address = address;
break;
}
case PROP_IPC_MODE:
priv->ipc_mode = (GstCudaIpcMode) g_value_get_enum (value);
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)
{
GstCudaIpcSink *self = GST_CUDA_IPC_SINK (object);
GstCudaIpcSinkPrivate *priv = self->priv;
std::lock_guard < std::mutex > lk (priv->lock);
switch (prop_id) {
case PROP_DEVICE_ID:
g_value_set_int (value, priv->device_id);
break;
case PROP_ADDRESS:
g_value_set_string (value, priv->address.c_str ());
break;
case PROP_IPC_MODE:
g_value_set_enum (value, priv->ipc_mode);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstClock *
gst_cuda_ipc_sink_provide_clock (GstElement * elem)
{
return gst_system_clock_obtain ();
}
static void
gst_cuda_ipc_sink_set_context (GstElement * elem, GstContext * context)
{
GstCudaIpcSink *self = GST_CUDA_IPC_SINK (elem);
GstCudaIpcSinkPrivate *priv = self->priv;
gst_cuda_handle_set_context (elem, context, priv->device_id, &priv->context);
GST_ELEMENT_CLASS (parent_class)->set_context (elem, context);
}
static gboolean
gst_cuda_ipc_sink_start (GstBaseSink * sink)
{
GstCudaIpcSink *self = GST_CUDA_IPC_SINK (sink);
GstCudaIpcSinkPrivate *priv = self->priv;
gboolean virtual_memory = FALSE;
gboolean os_handle = FALSE;
GST_DEBUG_OBJECT (self, "Start");
if (!gst_cuda_ensure_element_context (GST_ELEMENT_CAST (self),
priv->device_id, &priv->context)) {
GST_ERROR_OBJECT (self, "Couldn't get CUDA context");
return FALSE;
}
g_object_get (priv->context, "virtual-memory", &virtual_memory,
"os-handle", &os_handle, nullptr);
GST_DEBUG_OBJECT (self,
"virtual-memory: %d, OS-handle: %d, requested IPC mode: %d",
virtual_memory, os_handle, priv->ipc_mode);
priv->configured_ipc_mode = priv->ipc_mode;
if (priv->configured_ipc_mode == GST_CUDA_IPC_MMAP &&
(!virtual_memory || !os_handle)) {
GST_ELEMENT_WARNING (self, RESOURCE, SETTINGS, ("Not supported IPC mode"),
("MMAP mode IPC is not supported by device"));
priv->configured_ipc_mode = GST_CUDA_IPC_LEGACY;
}
GST_DEBUG_OBJECT (self, "Selected IPC mode: %d", priv->configured_ipc_mode);
priv->server = gst_cuda_ipc_server_new (priv->address.c_str (),
priv->context, priv->configured_ipc_mode);
if (!priv->server) {
gst_clear_object (&priv->context);
GST_ERROR_OBJECT (self, "Couldn't create server object");
return FALSE;
}
priv->stream = gst_cuda_stream_new (priv->context);
return TRUE;
}
static gboolean
gst_cuda_ipc_sink_stop (GstBaseSink * sink)
{
GstCudaIpcSink *self = GST_CUDA_IPC_SINK (sink);
GstCudaIpcSinkPrivate *priv = self->priv;
GST_DEBUG_OBJECT (self, "Stop");
if (priv->server)
gst_cuda_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_cuda_stream (&priv->stream);
gst_clear_object (&priv->context);
return TRUE;
}
static void
gst_cuda_ipc_sink_get_time (GstBaseSink * sink, GstBuffer * buf,
GstClockTime * start, GstClockTime * end)
{
GstCudaIpcSink *self = GST_CUDA_IPC_SINK (sink);
GstCudaIpcSinkPrivate *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 gboolean
gst_cuda_ipc_sink_set_caps (GstBaseSink * sink, GstCaps * caps)
{
GstCudaIpcSink *self = GST_CUDA_IPC_SINK (sink);
GstCudaIpcSinkPrivate *priv = self->priv;
GstStructure *config;
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;
}
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_CUDA_MEMORY, nullptr));
gst_clear_caps (&priv->caps);
priv->caps = new_caps;
if (priv->fallback_pool) {
gst_buffer_pool_set_active (priv->fallback_pool, FALSE);
gst_object_unref (priv->fallback_pool);
}
priv->fallback_pool = gst_cuda_buffer_pool_new (priv->context);
config = gst_buffer_pool_get_config (priv->fallback_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 (&priv->info), 0, 0);
if (priv->stream)
gst_buffer_pool_config_set_cuda_stream (config, priv->stream);
if (priv->configured_ipc_mode == GST_CUDA_IPC_MMAP) {
gst_buffer_pool_config_set_cuda_alloc_method (config,
GST_CUDA_MEMORY_ALLOC_MMAP);
}
if (!gst_buffer_pool_set_config (priv->fallback_pool, config)) {
GST_ERROR_OBJECT (self, "Couldn't set pool config");
gst_clear_object (&priv->fallback_pool);
return FALSE;
}
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 FALSE;
}
return TRUE;
}
static gboolean
gst_cuda_ipc_sink_propose_allocation (GstBaseSink * sink, GstQuery * query)
{
GstCudaIpcSink *self = GST_CUDA_IPC_SINK (sink);
GstCudaIpcSinkPrivate *priv = self->priv;
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) {
GstStructure *config;
pool = gst_cuda_buffer_pool_new (priv->context);
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_VIDEO_META);
if (priv->stream)
gst_buffer_pool_config_set_cuda_stream (config, priv->stream);
if (priv->configured_ipc_mode == GST_CUDA_IPC_MMAP) {
gst_buffer_pool_config_set_cuda_alloc_method (config,
GST_CUDA_MEMORY_ALLOC_MMAP);
}
size = GST_VIDEO_INFO_SIZE (&info);
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_cuda_ipc_sink_query (GstBaseSink * sink, GstQuery * query)
{
GstCudaIpcSink *self = GST_CUDA_IPC_SINK (sink);
GstCudaIpcSinkPrivate *priv = self->priv;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
if (gst_cuda_handle_context_query (GST_ELEMENT (self), query,
priv->context)) {
return TRUE;
}
break;
default:
break;
}
return GST_BASE_SINK_CLASS (parent_class)->query (sink, query);
}
static gboolean
gst_cuda_ipc_sink_foreach_meta (GstBuffer * buffer, GstMeta ** meta,
GstCudaIpcSink * self)
{
auto priv = self->priv;
if (!gst_meta_info_is_custom ((*meta)->info))
return TRUE;
gst_meta_serialize_simple (*meta, priv->meta);
return TRUE;
}
static GstFlowReturn
gst_cuda_ipc_sink_prepare (GstBaseSink * sink, GstBuffer * buf)
{
GstCudaIpcSink *self = GST_CUDA_IPC_SINK (sink);
GstCudaIpcSinkPrivate *priv = self->priv;
GstBuffer *cuda_buf;
GstMemory *mem;
GstCudaMemory *cmem;
GstMapInfo info;
CUresult ret;
CUdeviceptr ptr;
std::string handle_dump;
gst_clear_sample (&priv->prepared_sample);
cuda_buf = buf;
mem = gst_buffer_peek_memory (cuda_buf, 0);
if (!gst_is_cuda_memory (mem) ||
GST_CUDA_MEMORY_CAST (mem)->context != priv->context) {
if (gst_buffer_pool_acquire_buffer (priv->fallback_pool, &cuda_buf,
nullptr) != GST_FLOW_OK) {
GST_ERROR_OBJECT (self, "Couldn't acquire fallback buffer");
return GST_FLOW_ERROR;
}
if (!gst_cuda_buffer_copy (cuda_buf, GST_CUDA_BUFFER_COPY_CUDA,
&priv->info, buf, GST_CUDA_BUFFER_COPY_SYSTEM, &priv->info,
priv->context, priv->stream)) {
GST_ERROR_OBJECT (self, "Couldn't copy memory");
goto error;
}
mem = gst_buffer_peek_memory (cuda_buf, 0);
} else {
GstCudaMemory *cmem = GST_CUDA_MEMORY_CAST (mem);
GstCudaMemoryAllocMethod alloc_method =
gst_cuda_memory_get_alloc_method (cmem);
/* Copy into fallback pool if the memory belongs to fixed size buffer pool
* (e.g., decoder output) or mem allocation type is different */
if (gst_cuda_memory_is_from_fixed_pool (mem) ||
(priv->configured_ipc_mode == GST_CUDA_IPC_MMAP &&
alloc_method != GST_CUDA_MEMORY_ALLOC_MMAP) ||
(priv->configured_ipc_mode == GST_CUDA_IPC_LEGACY &&
alloc_method != GST_CUDA_MEMORY_ALLOC_MALLOC)) {
if (gst_buffer_pool_acquire_buffer (priv->fallback_pool, &cuda_buf,
nullptr) != GST_FLOW_OK) {
GST_ERROR_OBJECT (self, "Couldn't acquire fallback buffer");
return GST_FLOW_ERROR;
}
if (!gst_cuda_buffer_copy (cuda_buf, GST_CUDA_BUFFER_COPY_CUDA,
&priv->info, buf, GST_CUDA_BUFFER_COPY_CUDA, &priv->info,
priv->context, priv->stream)) {
GST_ERROR_OBJECT (self, "Couldn't copy memory");
goto error;
}
mem = gst_buffer_peek_memory (cuda_buf, 0);
}
}
cmem = GST_CUDA_MEMORY_CAST (mem);
priv->mem_info = cmem->info;
if (!gst_memory_map (mem, &info, (GstMapFlags) (GST_MAP_READ | GST_MAP_CUDA))) {
GST_ERROR_OBJECT (self, "Couldn't map memory");
goto error;
}
ptr = (CUdeviceptr) info.data;
gst_memory_unmap (mem, &info);
gst_cuda_memory_sync (cmem);
if (priv->configured_ipc_mode == GST_CUDA_IPC_MMAP) {
if (!gst_cuda_memory_export (cmem, (void *) &priv->prepared_os_handle)) {
GST_ERROR_OBJECT (self, "Couldn't export memory");
goto error;
}
} else {
if (!gst_cuda_context_push (cmem->context)) {
GST_ERROR_OBJECT (self, "Couldn't push context");
goto error;
}
ret = CuIpcGetMemHandle (&priv->prepared_handle, ptr);
gst_cuda_context_pop (nullptr);
if (!gst_cuda_result (ret)) {
GST_ERROR_OBJECT (self, "Couldn't get IPC handle");
goto error;
}
handle_dump = gst_cuda_ipc_mem_handle_to_string (priv->prepared_handle);
GST_TRACE_OBJECT (self, "Exported handle value for %" G_GUINTPTR_FORMAT
" %s", ptr, handle_dump.c_str ());
}
priv->prepared_sample = gst_sample_new (cuda_buf,
priv->caps, nullptr, nullptr);
g_byte_array_set_size (priv->meta, 0);
gst_buffer_foreach_meta (buf,
(GstBufferForeachMetaFunc) gst_cuda_ipc_sink_foreach_meta, self);
if (cuda_buf != buf)
gst_buffer_unref (cuda_buf);
return GST_FLOW_OK;
error:
if (cuda_buf != buf)
gst_buffer_unref (cuda_buf);
return GST_FLOW_ERROR;
}
static GstFlowReturn
gst_cuda_ipc_sink_render (GstBaseSink * sink, GstBuffer * buf)
{
GstCudaIpcSink *self = GST_CUDA_IPC_SINK (sink);
GstCudaIpcSinkPrivate *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_cuda_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);
}
if (priv->ipc_mode == GST_CUDA_IPC_LEGACY) {
ret = gst_cuda_ipc_server_send_data (priv->server, priv->prepared_sample,
priv->mem_info, priv->prepared_handle, pts, priv->meta);
} else {
ret = gst_cuda_ipc_server_send_mmap_data (priv->server,
priv->prepared_sample, priv->mem_info, priv->prepared_os_handle, pts,
priv->meta);
}
return ret;
}