Updated everything for dependencies. All sub packages are now part of the project. This was a massive update, hopefully won't have to be reverted.

gumble/go-opus/callbacks.c

@@ -0,0 +1,29 @@
+// +build !nolibopusfile
+
+// Copyright © Go Opus Authors (see AUTHORS file)
+//
+// License for use of this code is detailed in the LICENSE file
+
+// Allocate callback struct in C to ensure it's not managed by the Go GC. This
+// plays nice with the CGo rules and avoids any confusion.
+
+#include <opusfile.h>
+#include <stdint.h>
+
+// Defined in Go. Uses the same signature as Go, no need for proxy function.
+int go_readcallback(void *p, unsigned char *buf, int nbytes);
+
+static struct OpusFileCallbacks callbacks = {
+    .read = go_readcallback,
+};
+
+// Proxy function for op_open_callbacks, because it takes a void * context but
+// we want to pass it non-pointer data, namely an arbitrary uintptr_t
+// value. This is legal C, but go test -race (-d=checkptr) complains anyway. So
+// we have this wrapper function to shush it.
+// https://groups.google.com/g/golang-nuts/c/995uZyRPKlU
+OggOpusFile *
+my_open_callbacks(uintptr_t p, int *error)
+{
+    return op_open_callbacks((void *)p, &callbacks, NULL, 0, error);
+}