libraries/videodec: Fix build errors with av_err2str

src/core/libraries/videodec/videodec2_impl.cpp

@@ -8,6 +8,17 @@
 #include "common/logging/log.h"
 #include "core/libraries/error_codes.h"
 
+// The av_err2str macro in libavutil/error.h does not play nice with C++
+#ifdef av_err2str
+#undef av_err2str
+#include <string>
+av_always_inline std::string av_err2string(int errnum) {
+    char errbuf[AV_ERROR_MAX_STRING_SIZE];
+    return av_make_error_string(errbuf, AV_ERROR_MAX_STRING_SIZE, errnum);
+}
+#define av_err2str(err) av_err2string(err).c_str()
+#endif // av_err2str
+
 namespace Libraries::Vdec2 {
 
 std::vector<OrbisVideodec2AvcPictureInfo> gPictureInfos;
@@ -225,4 +236,4 @@ AVFrame* VdecDecoder::ConvertNV12Frame(AVFrame& frame) {
     return nv12_frame;
 }
 
-} // namespace Libraries::Vdec2
+} // namespace Libraries::Vdec2