Initial pure C++ implementation

tests/test_headers.cpp

@@ -0,0 +1,31 @@
+// The same headers under C++: aggregate initialisation, enum values and the
+// function declarations must all be usable from a C++ translation unit.
+#include "joc_core.h"
+#include "joc_stream.h"
+
+namespace {
+
+int probe() {
+    joc_task_config task{};
+    task.struct_size = sizeof(task);
+    task.operation = JOC_OP_BINAURAL;
+    task.binaural_mode = JOC_BINAURAL_MID;
+    joc_stream_config stream{};
+    stream.struct_size = sizeof(stream);
+    stream.input = JOC_STREAM_IN_CORE_PCM;
+    stream.output = JOC_STREAM_OUT_SPEAKER;
+    joc_stream_buffer buffer{};
+    buffer.struct_size = sizeof(buffer);
+    joc_stream_status_info status{};
+    status.struct_size = sizeof(status);
+    joc_error (*create)(const joc_stream_config*, joc_stream**) = &joc_stream_create;
+    joc_error (*execute)(const joc_task_config*, const joc_event_sink*, joc_task_result*) =
+        &joc_task_execute;
+    return static_cast<int>(task.operation) + static_cast<int>(stream.output) +
+           static_cast<int>(JOC_TIMESLOTS) + (create != nullptr ? 1 : 0) +
+           (execute != nullptr ? 1 : 0);
+}
+
+}  // namespace
+
+int joc_header_cpp_probe() { return probe(); }