avutil/dovi_meta: add dv_md_compression to cfg record

This field is used to signal the compression method in use.

doc/APIchanges

@@ -2,6 +2,9 @@ The last version increases of all libraries were on 2024-03-07
 
 API changes, most recent first:
 
+2024-07-28 - xxxxxxxxxx - lavu 59.30.100 - dovi_meta.h
+  Add AVDOVIDecoderConfigurationRecord.dv_md_compression.
+
 2024-07-25 - xxxxxxxxx - lavu 59.29.100 - cpu.h
   Add AV_CPU_FLAG_RVB.
 

libavutil/dovi_meta.h

@@ -46,6 +46,7 @@
  * uint8_t  el_present_flag
  * uint8_t  bl_present_flag
  * uint8_t  dv_bl_signal_compatibility_id
+ * uint8_t  dv_md_compression, the compression method in use
  * @endcode
  *
  * @note The struct must be allocated with av_dovi_alloc() and
@@ -60,8 +61,16 @@ typedef struct AVDOVIDecoderConfigurationRecord {
     uint8_t el_present_flag;
     uint8_t bl_present_flag;
     uint8_t dv_bl_signal_compatibility_id;
+    uint8_t dv_md_compression;
 } AVDOVIDecoderConfigurationRecord;
 
+enum AVDOVICompression {
+    AV_DOVI_COMPRESSION_NONE     = 0,
+    AV_DOVI_COMPRESSION_LIMITED  = 1,
+    AV_DOVI_COMPRESSION_RESERVED = 2,
+    AV_DOVI_COMPRESSION_EXTENDED = 3,
+};
+
 /**
  * Allocate a AVDOVIDecoderConfigurationRecord structure and initialize its
  * fields to default values.

libavutil/version.h

@@ -79,7 +79,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  59
-#define LIBAVUTIL_VERSION_MINOR  29
+#define LIBAVUTIL_VERSION_MINOR  30
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \