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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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4cc73ff9d6
Add util functions for runtime CUDA kernel source compilation
using NVRTC library. Like other nvcodec dependent libraries,
NVRTC library will be loaded via g_module_open.
Note that the NVRTC library naming is not g_module_open friendly
on Windows.
(i.e., nvrtc64_{CUDA major version}{CUDA minor version}.dll).
So users can specify the dll name using GST_NVCODEC_NVRTC_LIBNAME
environment.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1633>
105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
/* GStreamer
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* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.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 "gstcudanvrtc.h"
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GST_DEBUG_CATEGORY_STATIC (gst_cuda_nvrtc_debug);
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#define GST_CAT_DEFAULT gst_cuda_nvrtc_debug
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static void
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_init_debug (void)
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{
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static volatile gsize once_init = 0;
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if (g_once_init_enter (&once_init)) {
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GST_DEBUG_CATEGORY_INIT (gst_cuda_nvrtc_debug, "cudanvrtc", 0,
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"CUDA runtime compiler");
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g_once_init_leave (&once_init, 1);
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}
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}
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gchar *
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gst_cuda_nvrtc_compile (const gchar * source)
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{
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nvrtcProgram prog;
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nvrtcResult ret;
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const gchar *opts[] = { "--gpu-architecture=compute_30" };
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gsize ptx_size;
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gchar *ptx = NULL;
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g_return_val_if_fail (source != NULL, FALSE);
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_init_debug ();
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GST_TRACE ("CUDA kernel source \n%s", source);
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ret = NvrtcCreateProgram (&prog, source, NULL, 0, NULL, NULL);
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if (ret != NVRTC_SUCCESS) {
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GST_ERROR ("couldn't create nvrtc program, ret %d", ret);
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return NULL;
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}
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ret = NvrtcCompileProgram (prog, 1, opts);
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if (ret != NVRTC_SUCCESS) {
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gsize log_size;
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GST_ERROR ("couldn't compile nvrtc program, ret %d", ret);
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if (NvrtcGetProgramLogSize (prog, &log_size) == NVRTC_SUCCESS &&
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log_size > 0) {
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gchar *compile_log = g_alloca (log_size);
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if (NvrtcGetProgramLog (prog, compile_log) == NVRTC_SUCCESS) {
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GST_ERROR ("nvrtc compile log %s", compile_log);
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}
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}
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goto error;
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}
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ret = NvrtcGetPTXSize (prog, &ptx_size);
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if (ret != NVRTC_SUCCESS) {
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GST_ERROR ("unknown ptx size, ret %d", ret);
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goto error;
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}
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ptx = g_malloc0 (ptx_size);
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ret = NvrtcGetPTX (prog, ptx);
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if (ret != NVRTC_SUCCESS) {
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GST_ERROR ("couldn't get ptx, ret %d", ret);
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g_free (ptx);
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goto error;
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}
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NvrtcDestroyProgram (&prog);
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GST_TRACE ("compiled CUDA PTX %s\n", ptx);
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return ptx;
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error:
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NvrtcDestroyProgram (&prog);
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return NULL;
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}
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