mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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207 lines
4.7 KiB
C++
207 lines
4.7 KiB
C++
/* GStreamer
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* Copyright (C) 2022 Seungha Yang <seungha@centricular.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "cuda-gst.h"
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#include "gstcudastream.h"
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#include "gstcudautils.h"
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#include "gstcuda-private.h"
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#ifndef GST_DISABLE_GST_DEBUG
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#define GST_CAT_DEFAULT ensure_debug_category()
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static GstDebugCategory *
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ensure_debug_category (void)
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{
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static GstDebugCategory *cat = nullptr;
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GST_CUDA_CALL_ONCE_BEGIN {
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cat = _gst_debug_category_new ("cudastream", 0, "cudastream");
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} GST_CUDA_CALL_ONCE_END;
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return cat;
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}
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#else
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#define ensure_debug_category() /* NOOP */
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#endif /* GST_DISABLE_GST_DEBUG */
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static gint
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gst_cuda_stream_compare_func (const GstCudaStream * a, const GstCudaStream * b)
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{
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if (a == b)
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return GST_VALUE_EQUAL;
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return GST_VALUE_UNORDERED;
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}
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static void
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gst_cuda_stream_init_once (GType type)
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{
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static GstValueTable table = {
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0, (GstValueCompareFunc) gst_cuda_stream_compare_func,
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nullptr, nullptr
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};
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table.type = type;
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gst_value_register (&table);
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}
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G_DEFINE_BOXED_TYPE_WITH_CODE (GstCudaStream, gst_cuda_stream,
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(GBoxedCopyFunc) gst_mini_object_ref,
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(GBoxedFreeFunc) gst_mini_object_unref,
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gst_cuda_stream_init_once (g_define_type_id));
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struct _GstCudaStreamPrivate
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{
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CUstream handle;
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};
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static void
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_gst_cuda_stream_free (GstCudaStream * stream)
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{
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GstCudaStreamPrivate *priv = stream->priv;
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if (stream->context) {
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if (priv->handle) {
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gst_cuda_context_push (stream->context);
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CuStreamDestroy (priv->handle);
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gst_cuda_context_pop (nullptr);
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}
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gst_object_unref (stream->context);
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}
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g_free (priv);
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g_free (stream);
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}
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/**
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* gst_cuda_stream_new:
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* @context: a #GstCudaContext
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*
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* Creates a new #GstCudaStream
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*
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* Returns: (transfer full) (nullable): a new #GstCudaStream or %NULL on
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* failure
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*
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* Since: 1.24
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*/
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GstCudaStream *
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gst_cuda_stream_new (GstCudaContext * context)
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{
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GstCudaStream *self;
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CUresult cuda_ret;
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CUstream stream;
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g_return_val_if_fail (GST_IS_CUDA_CONTEXT (context), nullptr);
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if (!gst_cuda_context_push (context)) {
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GST_ERROR_OBJECT (context, "Couldn't push context");
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return nullptr;
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}
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cuda_ret = CuStreamCreate (&stream, CU_STREAM_DEFAULT);
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gst_cuda_context_pop (nullptr);
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if (!gst_cuda_result (cuda_ret)) {
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GST_ERROR_OBJECT (context, "Couldn't create stream");
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return nullptr;
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}
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self = g_new0 (GstCudaStream, 1);
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self->context = (GstCudaContext *) gst_object_ref (context);
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self->priv = g_new0 (GstCudaStreamPrivate, 1);
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self->priv->handle = stream;
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gst_mini_object_init (GST_MINI_OBJECT_CAST (self), 0,
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GST_TYPE_CUDA_STREAM, nullptr, nullptr,
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(GstMiniObjectFreeFunction) _gst_cuda_stream_free);
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return self;
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}
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/**
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* gst_cuda_stream_get_handle:
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* @stream: (allow-none): a #GstCudaStream
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*
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* Get CUDA stream handle
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*
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* Returns: a `CUstream` handle of @stream or %NULL if @stream is %NULL
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*
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* Since: 1.24
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*/
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CUstream
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gst_cuda_stream_get_handle (GstCudaStream * stream)
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{
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g_return_val_if_fail (!stream || GST_IS_CUDA_STREAM (stream), nullptr);
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if (!stream)
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return nullptr;
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return stream->priv->handle;
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}
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/**
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* gst_cuda_stream_ref:
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* @stream: a #GstCudaStream
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*
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* Increase the reference count of @stream.
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*
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* Returns: (transfer full): @stream
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*
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* Since: 1.24
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*/
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GstCudaStream *
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gst_cuda_stream_ref (GstCudaStream * stream)
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{
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return (GstCudaStream *) gst_mini_object_ref (GST_MINI_OBJECT_CAST (stream));
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}
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/**
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* gst_cuda_stream_unref:
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* @stream: a #GstCudaStream
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*
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* Decrease the reference count of @stream.
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*
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* Since: 1.24
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*/
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void
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gst_cuda_stream_unref (GstCudaStream * stream)
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{
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gst_mini_object_unref (GST_MINI_OBJECT_CAST (stream));
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}
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/**
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* gst_clear_cuda_stream: (skip)
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* @stream: a pointer to a #GstCudaStream reference
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*
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* Clears a reference to a #GstCudaStream.
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*
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* Since: 1.24
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*/
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void
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gst_clear_cuda_stream (GstCudaStream ** stream)
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{
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if (stream && *stream) {
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gst_cuda_stream_unref (*stream);
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*stream = nullptr;
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}
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}
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