smpte: Add SMPTE 334 header

smpte/334.h

@@ -0,0 +1,56 @@
+/*****************************************************************************
+ * 334.h: Vertical Ancillary Data Mapping of Caption Data and Other Related Data /
+          Caption Distribution Packet (CDP) Definition
+ *****************************************************************************
+ * Copyright (C) 2021 Open Broadcast Systems Ltd
+ *
+ * Authors: Kieran Kunhya <kierank@obe.tv>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject
+ * to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *****************************************************************************/
+
+/*
+ * Normative references:
+ *  - SMPTE 334
+ */
+
+#ifndef __BITSTREAM_SMPTE_334_H__
+#define __BITSTREAM_SMPTE_334_H__
+
+#include <stdint.h>   /* uint8_t, uint16_t, etc... */
+#include <stdbool.h>  /* bool */
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#define S334_CDP_IDENTIFIER 0x9669
+#define S334_CDP_HEADER_LEN 7
+#define S334_CDP_CCDATA_HEADER_LEN 2
+#define S334_CDP_CCDATA_ID 0x72
+#define S334_CDP_TIMECODE_LEN 5
+#define S334_CDP_FOOTER_LEN 4
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif