lavutil: add DOVI related header

add DOVI related struct
Signed-off-by: vacingfang <vacingfang@tencent.com>

libavutil/Makefile

@@ -23,6 +23,7 @@ HEADERS = adler32.h                                                     \
           des.h                                                         \
           dict.h                                                        \
           display.h                                                     \
+          dovi_meta.h                                                   \
           downmix_info.h                                                \
           encryption_info.h                                             \
           error.h                                                       \
@@ -112,6 +113,7 @@ OBJS = adler32.o                                                        \
        des.o                                                            \
        dict.o                                                           \
        display.o                                                        \
+       dovi_meta.o                                                      \
        downmix_info.o                                                   \
        encryption_info.o                                                \
        error.o                                                          \

libavutil/dovi_meta.c

+/*
+ * Copyright (c) 2020 Jun Zhao<barryjzhao@tencent.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
+ */
+
+#include "dovi_meta.h"
+#include "mem.h"
+
+AVDOVIDecoderConfigurationRecord *av_dovi_alloc(size_t *size)
+{
+    AVDOVIDecoderConfigurationRecord *dovi =
+        av_mallocz(sizeof(AVDOVIDecoderConfigurationRecord));
+    if (!dovi)
+        return NULL;
+
+     if (size)
+        *size = sizeof(*dovi);
+
+    return dovi;
+}

libavutil/dovi_meta.h

+/*
+ * Copyright (c) 2020 Vacing Fang <vacingfang@tencent.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
+ */
+
+/**
+ * @file
+ * DOVI configuration
+ */
+
+
+#ifndef AVUTIL_DOVI_META_H
+#define AVUTIL_DOVI_META_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+/*
+ * DOVI configuration
+ * ref: dolby-vision-bitstreams-within-the-iso-base-media-file-format-v2.1.2
+        dolby-vision-bitstreams-in-mpeg-2-transport-stream-multiplex-v1.2
+ * @code
+ * uint8_t  dv_version_major, the major version number that the stream complies with
+ * uint8_t  dv_version_minor, the minor version number that the stream complies with
+ * uint8_t  dv_profile, the Dolby Vision profile
+ * uint8_t  dv_level, the Dolby Vision level
+ * uint8_t  rpu_present_flag
+ * uint8_t  el_present_flag
+ * uint8_t  bl_present_flag
+ * uint8_t  dv_bl_signal_compatibility_id
+ * @endcode
+ *
+ * @note The struct must be allocated with av_dovi_alloc() and
+ *       its size is not a part of the public ABI.
+ */
+typedef struct AVDOVIDecoderConfigurationRecord {
+    uint8_t dv_version_major;
+    uint8_t dv_version_minor;
+    uint8_t dv_profile;
+    uint8_t dv_level;
+    uint8_t rpu_present_flag;
+    uint8_t el_present_flag;
+    uint8_t bl_present_flag;
+    uint8_t dv_bl_signal_compatibility_id;
+} AVDOVIDecoderConfigurationRecord;
+
+/**
+ * Allocate a AVDOVIDecoderConfigurationRecord structure and initialize its
+ * fields to default values.
+ *
+ * @return the newly allocated struct or NULL on failure
+ */
+AVDOVIDecoderConfigurationRecord *av_dovi_alloc(size_t *size);
+
+#endif /* AVUTIL_DOVI_META_H */