gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/cuda/gstcudanvrtc.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

127 lines
3.2 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "cuda-gst.h"
#include "gstcudanvrtc.h"
GST_DEBUG_CATEGORY_STATIC (gst_cuda_nvrtc_debug);
#define GST_CAT_DEFAULT gst_cuda_nvrtc_debug
static void
_init_debug (void)
{
static gsize once_init = 0;
if (g_once_init_enter (&once_init)) {
GST_DEBUG_CATEGORY_INIT (gst_cuda_nvrtc_debug, "cudanvrtc", 0,
"CUDA runtime compiler");
g_once_init_leave (&once_init, 1);
}
}
/**
* gst_cuda_nvrtc_compile:
* @source: Source code to compile
*
* Since: 1.22
*/
gchar *
gst_cuda_nvrtc_compile (const gchar * source)
{
nvrtcProgram prog;
nvrtcResult ret;
CUresult curet;
const gchar *opts[] = { "--gpu-architecture=compute_30" };
gsize ptx_size;
gchar *ptx = NULL;
int driverVersion;
g_return_val_if_fail (source != NULL, FALSE);
_init_debug ();
GST_TRACE ("CUDA kernel source \n%s", source);
curet = CuDriverGetVersion (&driverVersion);
if (curet != CUDA_SUCCESS) {
GST_ERROR ("Failed to query CUDA Driver version, ret %d", curet);
return NULL;
}
GST_DEBUG ("CUDA Driver Version %d.%d", driverVersion / 1000,
(driverVersion % 1000) / 10);
ret = NvrtcCreateProgram (&prog, source, NULL, 0, NULL, NULL);
if (ret != NVRTC_SUCCESS) {
GST_ERROR ("couldn't create nvrtc program, ret %d", ret);
return NULL;
}
/* Starting from CUDA 11, the lowest supported architecture is 5.2 */
if (driverVersion >= 11000)
opts[0] = "--gpu-architecture=compute_52";
ret = NvrtcCompileProgram (prog, 1, opts);
if (ret != NVRTC_SUCCESS) {
gsize log_size;
GST_ERROR ("couldn't compile nvrtc program, ret %d", ret);
if (NvrtcGetProgramLogSize (prog, &log_size) == NVRTC_SUCCESS &&
log_size > 0) {
gchar *compile_log = g_alloca (log_size);
if (NvrtcGetProgramLog (prog, compile_log) == NVRTC_SUCCESS) {
GST_ERROR ("nvrtc compile log %s", compile_log);
}
}
goto error;
}
ret = NvrtcGetPTXSize (prog, &ptx_size);
if (ret != NVRTC_SUCCESS) {
GST_ERROR ("unknown ptx size, ret %d", ret);
goto error;
}
ptx = g_malloc0 (ptx_size);
ret = NvrtcGetPTX (prog, ptx);
if (ret != NVRTC_SUCCESS) {
GST_ERROR ("couldn't get ptx, ret %d", ret);
g_free (ptx);
goto error;
}
NvrtcDestroyProgram (&prog);
GST_TRACE ("compiled CUDA PTX %s\n", ptx);
return ptx;
error:
NvrtcDestroyProgram (&prog);
return NULL;
}