avformat/image2: add Jpeg XL as image2 format

This commit adds support to libavformat for muxing
and demuxing Jpeg XL images as image2 streams.

1 files changed, 32 insertions, 0 deletions

diff --git a/libavformat/jpegxl_probe.h b/libavformat/jpegxl_probe.h
new file mode 100644
index 0000000000..2960e81e11
--- /dev/null
+++ b/libavformat/jpegxl_probe.h
@@ -0,0 +1,32 @@
+/*
+ * Jpeg XL header verification
+ * Copyright (c) 2022 Leo Izen <leo.izen@gmail.com>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVFORMAT_JPEGXL_PROBE_H
+#define AVFORMAT_JPEGXL_PROBE_H
+
+#include <stdint.h>
+
+#define FF_JPEGXL_CODESTREAM_SIGNATURE_LE 0x0aff
+#define FF_JPEGXL_CONTAINER_SIGNATURE_LE 0x204c584a0c000000
+
+int ff_jpegxl_verify_codestream_header(const uint8_t *buf, int buflen);
+
+#endif /* AVFORMAT_JPEGXL_PROBE_H */