gstreamer/subprojects/gst-plugins-bad/sys/nvcodec/gstcudabasetransform.c
Thibault Saunier c033f8fad2 cuda: Factor out a public GstCUDA library
So applications and elements implemented outside GStreamer can reuse
our infrastructure

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1472>
2022-04-19 16:39:43 +00:00

359 lines
10 KiB
C

/* GStreamer
* Copyright (C) <2019> Seungha Yang <seungha.yang@navercorp.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.
*/
/**
* GstCudaBaseTransform:
*
* Base class for CUDA transformers
*
* Since: 1.20
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <gst/cuda/gstcudautils.h>
#include "gstcudabasetransform.h"
GST_DEBUG_CATEGORY_STATIC (gst_cuda_base_transform_debug);
#define GST_CAT_DEFAULT gst_cuda_base_transform_debug
enum
{
PROP_0,
PROP_DEVICE_ID,
};
#define DEFAULT_DEVICE_ID -1
#define gst_cuda_base_transform_parent_class parent_class
G_DEFINE_ABSTRACT_TYPE (GstCudaBaseTransform, gst_cuda_base_transform,
GST_TYPE_BASE_TRANSFORM);
static void gst_cuda_base_transform_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_cuda_base_transform_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void gst_cuda_base_transform_dispose (GObject * object);
static void gst_cuda_base_transform_set_context (GstElement * element,
GstContext * context);
static gboolean gst_cuda_base_transform_start (GstBaseTransform * trans);
static gboolean gst_cuda_base_transform_stop (GstBaseTransform * trans);
static gboolean gst_cuda_base_transform_set_caps (GstBaseTransform * trans,
GstCaps * incaps, GstCaps * outcaps);
static gboolean gst_cuda_base_transform_get_unit_size (GstBaseTransform * trans,
GstCaps * caps, gsize * size);
static gboolean gst_cuda_base_transform_query (GstBaseTransform * trans,
GstPadDirection direction, GstQuery * query);
static void gst_cuda_base_transform_before_transform (GstBaseTransform * trans,
GstBuffer * buffer);
static void
gst_cuda_base_transform_class_init (GstCudaBaseTransformClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *element_class;
GstBaseTransformClass *trans_class;
gobject_class = G_OBJECT_CLASS (klass);
element_class = GST_ELEMENT_CLASS (klass);
trans_class = GST_BASE_TRANSFORM_CLASS (klass);
gobject_class->set_property = gst_cuda_base_transform_set_property;
gobject_class->get_property = gst_cuda_base_transform_get_property;
gobject_class->dispose = gst_cuda_base_transform_dispose;
g_object_class_install_property (gobject_class, PROP_DEVICE_ID,
g_param_spec_int ("cuda-device-id",
"Cuda Device ID",
"Set the GPU device to use for operations (-1 = auto)",
-1, G_MAXINT, DEFAULT_DEVICE_ID,
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
G_PARAM_STATIC_STRINGS));
element_class->set_context =
GST_DEBUG_FUNCPTR (gst_cuda_base_transform_set_context);
trans_class->passthrough_on_same_caps = TRUE;
trans_class->start = GST_DEBUG_FUNCPTR (gst_cuda_base_transform_start);
trans_class->stop = GST_DEBUG_FUNCPTR (gst_cuda_base_transform_stop);
trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_cuda_base_transform_set_caps);
trans_class->get_unit_size =
GST_DEBUG_FUNCPTR (gst_cuda_base_transform_get_unit_size);
trans_class->query = GST_DEBUG_FUNCPTR (gst_cuda_base_transform_query);
trans_class->before_transform =
GST_DEBUG_FUNCPTR (gst_cuda_base_transform_before_transform);
GST_DEBUG_CATEGORY_INIT (gst_cuda_base_transform_debug,
"cudabasefilter", 0, "cudabasefilter Element");
gst_type_mark_as_plugin_api (GST_TYPE_CUDA_BASE_TRANSFORM, 0);
}
static void
gst_cuda_base_transform_init (GstCudaBaseTransform * filter)
{
filter->device_id = DEFAULT_DEVICE_ID;
}
static void
gst_cuda_base_transform_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstCudaBaseTransform *filter = GST_CUDA_BASE_TRANSFORM (object);
switch (prop_id) {
case PROP_DEVICE_ID:
filter->device_id = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_cuda_base_transform_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstCudaBaseTransform *filter = GST_CUDA_BASE_TRANSFORM (object);
switch (prop_id) {
case PROP_DEVICE_ID:
g_value_set_int (value, filter->device_id);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_cuda_base_transform_dispose (GObject * object)
{
GstCudaBaseTransform *filter = GST_CUDA_BASE_TRANSFORM (object);
gst_clear_object (&filter->context);
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static void
gst_cuda_base_transform_set_context (GstElement * element, GstContext * context)
{
GstCudaBaseTransform *filter = GST_CUDA_BASE_TRANSFORM (element);
gst_cuda_handle_set_context (element,
context, filter->device_id, &filter->context);
GST_ELEMENT_CLASS (parent_class)->set_context (element, context);
}
static gboolean
gst_cuda_base_transform_start (GstBaseTransform * trans)
{
GstCudaBaseTransform *filter = GST_CUDA_BASE_TRANSFORM (trans);
CUresult cuda_ret;
if (!gst_cuda_ensure_element_context (GST_ELEMENT_CAST (filter),
filter->device_id, &filter->context)) {
GST_ERROR_OBJECT (filter, "Failed to get CUDA context");
return FALSE;
}
if (gst_cuda_context_push (filter->context)) {
cuda_ret = CuStreamCreate (&filter->cuda_stream, CU_STREAM_DEFAULT);
if (!gst_cuda_result (cuda_ret)) {
GST_WARNING_OBJECT (filter,
"Could not create cuda stream, will use default stream");
filter->cuda_stream = NULL;
}
gst_cuda_context_pop (NULL);
}
return TRUE;
}
static gboolean
gst_cuda_base_transform_stop (GstBaseTransform * trans)
{
GstCudaBaseTransform *filter = GST_CUDA_BASE_TRANSFORM (trans);
if (filter->context && filter->cuda_stream) {
if (gst_cuda_context_push (filter->context)) {
gst_cuda_result (CuStreamDestroy (filter->cuda_stream));
gst_cuda_context_pop (NULL);
}
}
gst_clear_object (&filter->context);
filter->cuda_stream = NULL;
return TRUE;
}
static gboolean
gst_cuda_base_transform_set_caps (GstBaseTransform * trans, GstCaps * incaps,
GstCaps * outcaps)
{
GstCudaBaseTransform *filter = GST_CUDA_BASE_TRANSFORM (trans);
GstVideoInfo in_info, out_info;
GstCudaBaseTransformClass *klass;
gboolean res;
if (!filter->context) {
GST_ERROR_OBJECT (filter, "No available CUDA context");
return FALSE;
}
/* input caps */
if (!gst_video_info_from_caps (&in_info, incaps)) {
GST_ERROR_OBJECT (filter, "invalid incaps %" GST_PTR_FORMAT, incaps);
return FALSE;
}
/* output caps */
if (!gst_video_info_from_caps (&out_info, outcaps)) {
GST_ERROR_OBJECT (filter, "invalid incaps %" GST_PTR_FORMAT, incaps);
return FALSE;
}
klass = GST_CUDA_BASE_TRANSFORM_GET_CLASS (filter);
if (klass->set_info)
res = klass->set_info (filter, incaps, &in_info, outcaps, &out_info);
else
res = TRUE;
if (res) {
filter->in_info = in_info;
filter->out_info = out_info;
}
return res;
}
static gboolean
gst_cuda_base_transform_get_unit_size (GstBaseTransform * trans, GstCaps * caps,
gsize * size)
{
gboolean ret = FALSE;
GstVideoInfo info;
ret = gst_video_info_from_caps (&info, caps);
if (ret)
*size = GST_VIDEO_INFO_SIZE (&info);
return TRUE;
}
static gboolean
gst_cuda_base_transform_query (GstBaseTransform * trans,
GstPadDirection direction, GstQuery * query)
{
GstCudaBaseTransform *filter = GST_CUDA_BASE_TRANSFORM (trans);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
{
gboolean ret;
ret = gst_cuda_handle_context_query (GST_ELEMENT (filter), query,
filter->context);
if (ret)
return TRUE;
break;
}
default:
break;
}
return GST_BASE_TRANSFORM_CLASS (parent_class)->query (trans, direction,
query);
}
static void
gst_cuda_base_transform_before_transform (GstBaseTransform * trans,
GstBuffer * buffer)
{
GstCudaBaseTransform *self = GST_CUDA_BASE_TRANSFORM (trans);
GstCudaMemory *cmem;
GstMemory *mem;
gboolean update_context = FALSE;
GstCaps *in_caps = NULL;
GstCaps *out_caps = NULL;
in_caps = gst_pad_get_current_caps (GST_BASE_TRANSFORM_SINK_PAD (trans));
if (!in_caps) {
GST_WARNING_OBJECT (self, "sinkpad has null caps");
goto out;
}
out_caps = gst_pad_get_current_caps (GST_BASE_TRANSFORM_SRC_PAD (trans));
if (!out_caps) {
GST_WARNING_OBJECT (self, "Has no configured output caps");
goto out;
}
mem = gst_buffer_peek_memory (buffer, 0);
/* Can happens (e.g., d3d11upload) */
if (!gst_is_cuda_memory (mem))
goto out;
cmem = GST_CUDA_MEMORY_CAST (mem);
/* Same context, nothing to do */
if (self->context == cmem->context)
goto out;
/* Can accept any device, update */
if (self->device_id < 0) {
update_context = TRUE;
} else {
guint device_id = 0;
g_object_get (cmem->context, "cuda-device-id", &device_id, NULL);
/* The same GPU as what user wanted, update */
if (device_id == (guint) self->device_id)
update_context = TRUE;
}
if (!update_context)
goto out;
GST_INFO_OBJECT (self, "Updating device %" GST_PTR_FORMAT " -> %"
GST_PTR_FORMAT, self->context, cmem->context);
gst_object_unref (self->context);
self->context = gst_object_ref (cmem->context);
/* subclass will update internal object.
* Note that gst_base_transform_reconfigure() might not trigger this
* unless caps was changed meanwhile */
gst_cuda_base_transform_set_caps (trans, in_caps, out_caps);
/* Mark reconfigure so that we can update pool */
gst_base_transform_reconfigure_src (trans);
out:
gst_clear_caps (&in_caps);
gst_clear_caps (&out_caps);
return;
}