1 files changed, 67 insertions, 0 deletions
diff --git a/third_party/jpeg-xl/lib/jpegli/common.h b/third_party/jpeg-xl/lib/jpegli/common.h
new file mode 100644
index 0000000000..f46b751018
--- /dev/null
+++ b/third_party/jpeg-xl/lib/jpegli/common.h
@@ -0,0 +1,67 @@
+// Copyright (c) the JPEG XL Project Authors. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+// This file conatins the C API of the common encoder/decoder part of libjpegli
+// library, which is based on the C API of libjpeg, with the function names
+// changed from jpeg_* to jpegli_*, while compressor and dempressor object
+// definitions are included directly from jpeglib.h
+//
+// Applications can use the libjpegli library in one of the following ways:
+//
+//  (1) Include jpegli/encode.h and/or jpegli/decode.h, update the function
+//      names of the API and link against libjpegli.
+//
+//  (2) Leave the application code unchanged, but replace the libjpeg.so library
+//      with the one built by this project that is API- and ABI-compatible with
+//      libjpeg-turbo's version of libjpeg.so.
+
+#ifndef LIB_JPEGLI_COMMON_H_
+#define LIB_JPEGLI_COMMON_H_
+
+/* clang-format off */
+#include <stdio.h>
+#include <jpeglib.h>
+/* clang-format on */
+
+#if defined(__cplusplus) || defined(c_plusplus)
+extern "C" {
+#endif
+
+struct jpeg_error_mgr* jpegli_std_error(struct jpeg_error_mgr* err);
+
+void jpegli_abort(j_common_ptr cinfo);
+
+void jpegli_destroy(j_common_ptr cinfo);
+
+JQUANT_TBL* jpegli_alloc_quant_table(j_common_ptr cinfo);
+
+JHUFF_TBL* jpegli_alloc_huff_table(j_common_ptr cinfo);
+
+//
+// New API structs and functions that are not available in libjpeg
+//
+// NOTE: This part of the API is still experimental and will probably change in
+// the future.
+//
+
+typedef enum {
+  JPEGLI_TYPE_FLOAT = 0,
+  JPEGLI_TYPE_UINT8 = 2,
+  JPEGLI_TYPE_UINT16 = 3,
+} JpegliDataType;
+
+typedef enum {
+  JPEGLI_NATIVE_ENDIAN = 0,
+  JPEGLI_LITTLE_ENDIAN = 1,
+  JPEGLI_BIG_ENDIAN = 2,
+} JpegliEndianness;
+
+int jpegli_bytes_per_sample(JpegliDataType data_type);
+
+#if defined(__cplusplus) || defined(c_plusplus)
+}  // extern "C"
+#endif
+
+#endif  // LIB_JPEGLI_COMMON_H_