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, 45 insertions, 0 deletions

diff --git a/libavutil/cuda_check.c b/libavutil/cuda_check.c
new file mode 100644
index 0000000000..95c0256d12
--- /dev/null
+++ b/libavutil/cuda_check.c
@@ -0,0 +1,45 @@
+/*
+ * 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
+ */
+
+#include "compat/cuda/dynlink_loader.h"
+#include "libavutil/cuda_check.h"
+
+int ff_cuda_check(void *avctx,
+                  void *cuGetErrorName_fn,
+                  void *cuGetErrorString_fn,
+                  CUresult err, const char *func)
+{
+    const char *err_name;
+    const char *err_string;
+
+    av_log(avctx, AV_LOG_TRACE, "Calling %s\n", func);
+
+    if (err == CUDA_SUCCESS)
+        return 0;
+
+    ((tcuGetErrorName *)cuGetErrorName_fn)(err, &err_name);
+    ((tcuGetErrorString *)cuGetErrorString_fn)(err, &err_string);
+
+    av_log(avctx, AV_LOG_ERROR, "%s failed", func);
+    if (err_name && err_string)
+        av_log(avctx, AV_LOG_ERROR, " -> %s: %s", err_name, err_string);
+    av_log(avctx, AV_LOG_ERROR, "\n");
+
+    return AVERROR_EXTERNAL;
+}
+