Add dump_obu tool.
This is a work in progress. So far this tool supports only
reading of OBU headers with and without extensions. OBU
payload parsing will be added in future commits.
Change-Id: Ie4c184ad4ae8e536e00015e9bde6a7cde8dada28
diff --git a/tools/obu_parser.h b/tools/obu_parser.h
new file mode 100644
index 0000000..f4545ae
--- /dev/null
+++ b/tools/obu_parser.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2017, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#ifndef TOOLS_OBU_PARSER_H_
+#define TOOLS_OBU_PARSER_H_
+
+#include <cstdint>
+
+namespace aom_tools {
+
+// TODO(tomfinegan): The OBU and OBU metadata types are currently defined in
+// av1/common/enums.h, which is not part of the libaom's public API. They are
+// duped here until that's dealt with.
+
+enum ObuType {
+ OBU_SEQUENCE_HEADER = 1,
+ OBU_TEMPORAL_DELIMITER = 2,
+ OBU_FRAME_HEADER = 3,
+ OBU_TILE_GROUP = 4,
+ OBU_METADATA = 5,
+ OBU_PADDING = 15,
+};
+
+enum ObuMetadataType {
+ OBU_METADATA_TYPE_PRIVATE_DATA = 0,
+ OBU_METADATA_TYPE_HDR_CLL = 1,
+ OBU_METADATA_TYPE_HDR_MDCV = 2,
+};
+
+struct ObuExtensionHeader {
+ int temporal_id;
+ int spatial_id;
+ int quality_id;
+ bool reserved_flag;
+};
+
+struct ObuHeader {
+ int type;
+ int reserved;
+ bool has_extension;
+ ObuExtensionHeader ext_header;
+};
+
+// Print information obtained from OBU(s) in data until data is exhausted or an
+// error occurs. Returns true when all data is consumed successfully.
+bool DumpObu(const uint8_t *data, int length);
+
+} // namespace aom_tools
+
+#endif // TOOLS_OBU_PARSER_H_
