1 files changed, 46 insertions, 0 deletions
diff --git a/archived/ptlibzippy/ptlibzippy_pngshim.c b/archived/ptlibzippy/ptlibzippy_pngshim.c
new file mode 100644
index 0000000000..e8e591dd73
--- /dev/null
+++ b/archived/ptlibzippy/ptlibzippy_pngshim.c
@@ -0,0 +1,46 @@
+/* ptlibzippy_pngshim.c -- libpng-specific zlib symbol shims
+ * Copyright (C) 2026 Project Tick
+ * For conditions of distribution and use, see copyright notice in ptlibzippy.h
+ */
+
+#include "ptzippyguts.h"
+
+uLong ZEXPORT ptpng_adler32(uLong adler, const Bytef *buf, uInt len) {
+    return adler32(adler, buf, len);
+}
+
+uLong ZEXPORT ptpng_crc32(uLong crc, const Bytef *buf, uInt len) {
+    return crc32(crc, buf, len);
+}
+
+int ZEXPORT ptpng_deflate(z_streamp strm, int flush) {
+    return deflate(strm, flush);
+}
+
+int ZEXPORT ptpng_deflateInit2_(z_streamp strm, int level, int method,
+                                int windowBits, int memLevel, int strategy,
+                                const char *version, int stream_size) {
+    return deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
+                         version, stream_size);
+}
+
+int ZEXPORT ptpng_deflateReset(z_streamp strm) {
+    return deflateReset(strm);
+}
+
+int ZEXPORT ptpng_inflate(z_streamp strm, int flush) {
+    return inflate(strm, flush);
+}
+
+int ZEXPORT ptpng_inflateInit2_(z_streamp strm, int windowBits,
+                                const char *version, int stream_size) {
+    return inflateInit2_(strm, windowBits, version, stream_size);
+}
+
+int ZEXPORT ptpng_inflateReset(z_streamp strm) {
+    return inflateReset(strm);
+}
+
+int ZEXPORT ptpng_inflateReset2(z_streamp strm, int windowBits) {
+    return inflateReset2(strm, windowBits);
+}