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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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e5132a8508
Implement NVMM <-> CUDA, GL, SYSTEM memory conversion. Jetson is not supported yet. Note that NVMM <-> GL interop on Jetson platform is supported by GstGL Some example pipelines are: - Convert NVMM to GstGL memory nvv4l2decoder ! "video/x-raw(memory:NVMM)" ! cudadownload ! "video/x-raw(memory:GLMemory)" ! glimagesink - Upload system memory to NVMM and encode video/x-raw,format=NV12 ! cudaupload ! "video/x-raw(memory:NVMM)" ! nvv4l2h264enc - Convert NVMM to GstCUDA memory and encode nvvideoconvert ! "video/x-raw(memory:NVMM)" ! cudaupload ! "video/x-raw(memory:CUDAMemory)" ! nvh264enc Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1865>
102 lines
2.4 KiB
C
102 lines
2.4 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 "gstcudanvmm.h"
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#include <gmodule.h>
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#include <string.h>
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GST_DEBUG_CATEGORY_EXTERN (gst_cuda_nvmm_debug);
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#define GST_CAT_DEFAULT gst_cuda_nvmm_debug
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#define LOAD_SYMBOL(name) G_STMT_START { \
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if (!g_module_symbol (module, G_STRINGIFY (name), (gpointer *) &vtable->name)) { \
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GST_ERROR ("Failed to load symbol '%s', %s", G_STRINGIFY (name), g_module_error()); \
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goto error; \
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} \
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} G_STMT_END;
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/* *INDENT-OFF* */
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typedef struct _GstCudaNvmmVTable
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{
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gboolean loaded;
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GstBufferPool * (*gst_nvds_buffer_pool_new) (void);
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} GstCudaNvmmVTable;
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/* *INDENT-ON* */
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static GstCudaNvmmVTable gst_cuda_nvmm_vtable = { 0, };
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static gboolean
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gst_cuda_nvmm_load_library (void)
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{
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GModule *module;
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GstCudaNvmmVTable *vtable;
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if (gst_cuda_nvmm_vtable.loaded)
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return TRUE;
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module = g_module_open ("libnvdsbufferpool.so", G_MODULE_BIND_LAZY);
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if (!module) {
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GST_INFO ("libnvdsbufferpool library is unavailable");
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return FALSE;
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}
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vtable = &gst_cuda_nvmm_vtable;
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LOAD_SYMBOL (gst_nvds_buffer_pool_new);
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vtable->loaded = TRUE;
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return TRUE;
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error:
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g_module_close (module);
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return FALSE;
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}
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gboolean
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gst_cuda_nvmm_init_once (void)
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{
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static gboolean loaded = FALSE;
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static gsize load_once = 0;
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if (g_once_init_enter (&load_once)) {
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loaded = gst_cuda_nvmm_load_library ();
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g_once_init_leave (&load_once, 1);
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}
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return loaded;
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}
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GstBufferPool *
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gst_cuda_nvmm_buffer_pool_new (void)
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{
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if (!gst_cuda_nvmm_init_once ())
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return NULL;
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g_assert (gst_cuda_nvmm_vtable.gst_nvds_buffer_pool_new != NULL);
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return gst_cuda_nvmm_vtable.gst_nvds_buffer_pool_new ();
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}
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