avutil/hwcontext_cuda: Define and use common CHECK_CU()

We have a pattern of wrapping CUDA calls to print errors and
normalise return values that is used in a couple of places. To
avoid duplication and increase consistency, let's put the wrapper
implementation in a shared place and use it everywhere.

Affects:

* avcodec/cuviddec
* avcodec/nvdec
* avcodec/nvenc
* avfilter/vf_scale_cuda
* avfilter/vf_scale_npp
* avfilter/vf_thumbnail_cuda
* avfilter/vf_transpose_npp
* avfilter/vf_yadif_cuda

1 files changed, 43 insertions, 0 deletions

diff --git a/libavutil/cuda_check.h b/libavutil/cuda_check.h
new file mode 100644
index 0000000000..0d45538c2f
--- /dev/null
+++ b/libavutil/cuda_check.h
@@ -0,0 +1,43 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+
+#ifndef FF_CUDA_CHECK_H
+#define FF_CUDA_CHECK_H
+
+/**
+ * Wrap a CUDA function call and print error information if it fails.
+ */
+
+int ff_cuda_check(void *avctx,
+                  void *cuGetErrorName_fn, void *cuGetErrorString_fn,
+                  CUresult err, const char *func);
+
+/**
+ * Convenience wrapper for ff_cuda_check when directly linking libcuda.
+ */
+
+#define FF_CUDA_CHECK(avclass, x) ff_cuda_check(avclass, cuGetErrorName, cuGetErrorString, (x), #x)
+
+/**
+ * Convenience wrapper for ff_cuda_check when dynamically loading cuda symbols.
+ */
+
+#define FF_CUDA_CHECK_DL(avclass, cudl, x) ff_cuda_check(avclass, cudl->cuGetErrorName, cudl->cuGetErrorString, (x), #x)
+
+#endif /* FF_CUDA_CHECK_H */