From cf926bfd57ccfe86a888d331b2c9af45943293aa Mon Sep 17 00:00:00 2001
From: Jerry <isjerryxiao@outlook.com>
Date: Thu, 18 Apr 2024 17:08:01 +0800
Subject: [PATCH] init

---
 Makefile |  8 ++++++++
 nyav1.c  | 13 +++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 Makefile
 create mode 100644 nyav1.c

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..2c5c5bc
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,8 @@
+CC ?= gcc
+CFLAGS += -fPIC -shared
+nyav1.so:
+	$(CC) $(CFLAGS) nyav1.c -o nyav1.so
+
+.PHONY: clean
+clean:
+	rm -f nyav1.so
diff --git a/nyav1.c b/nyav1.c
new file mode 100644
index 0000000..a87daa6
--- /dev/null
+++ b/nyav1.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <dlfcn.h>
+static int (*old) (void *a, void *b) = NULL;
+int dav1d_open (void *a, void *b) {
+    int max_frame_delay = *(((int*)b)+1);
+    if (max_frame_delay == 1) {
+        if (!old) old = dlsym(RTLD_NEXT, "dav1d_open");
+        printf("dav1d_open passthrough, max_frame_delay=%d\n", max_frame_delay);
+        return old(a, b);
+    }
+    printf("dav1d_open force -1, max_frame_delay=%d\n", max_frame_delay);
+    return -1;
+}