diff --git a/multimedia/drm_framework/common/native_drm_common.h b/multimedia/drm_framework/common/native_drm_common.h
index f634ebf107c8caa6ed9df0889225151b20797389..9b73502b7d86502d7488cace43e4fcd591cdf93c 100644
--- a/multimedia/drm_framework/common/native_drm_common.h
+++ b/multimedia/drm_framework/common/native_drm_common.h
@@ -251,7 +251,7 @@ typedef struct DRM_MediaKeyRequestInfo {
      */
     int32_t initDataLen;
     /**
-     * Initial data format as PSSH after base64 encoding.
+     * PSSH info.
      */
     uint8_t initData[MAX_INIT_DATA_LEN];
     /**
@@ -502,8 +502,121 @@ typedef struct MediaKeySystem MediaKeySystem;
  */
 typedef struct MediaKeySession MediaKeySession;
 
+/**
+ * @brief Media key id size.
+ * @since 12
+ * @version 1.0
+ */
+#define META_DRM_KEY_ID_SIZE                    16
+/**
+ * @brief Media key iv size.
+ * @since 12
+ * @version 1.0
+ */
+#define META_DRM_IV_SIZE                        16
+/**
+ * @brief Max count of sub samples.
+ * @since 12
+ * @version 1.0
+ */
+#define META_DRM_MAX_SUB_SAMPLE_NUM             64
+
+/**
+ * @brief Key string of drm cenc info used as param key by {@link OH_AVFormat_SetBuffer}.
+ * @since 12
+ * @version 1.0
+ */
+const char DRM_CENC_INFO[] = "drm_cenc_info";
+
+/**
+ * @brief Drm cenc algorithm type.
+ * @syscap SystemCapability.Multimedia.Drm.Core
+ * @since 12
+ * @version 1.0
+ */
+enum MetaDrmCencAlgorithm {
+    /**
+     * Uncrypted.
+     */
+    META_DRM_ALG_CENC_UNENCRYPTED = 0x0,
+    /**
+     * Aes ctr.
+     */
+    META_DRM_ALG_CENC_AES_CTR = 0x1,
+    /**
+     * Aes wv.
+     */
+    META_DRM_ALG_CENC_AES_WV = 0x2,
+    /**
+     * Aes cbc.
+     */
+    META_DRM_ALG_CENC_AES_CBC = 0x3,
+    /**
+     * Sm4 cbc.
+     */
+    META_DRM_ALG_CENC_SM4_CBC = 0x4,
+    /**
+     * Sm4 ctr.
+     */
+    META_DRM_ALG_CENC_SM4_CTR,
+};
+
+/**
+ * @brief Subsample info of media.
+ * @since 12
+ * @version 1.0
+ */
+struct MetaDrmSubSample {
+    /* Clear header len. */
+    uint32_t clearHeaderLen;
+    /* Payload Len. */
+    uint32_t payLoadLen;
+};
+/**
+ * @brief Struct MetaDrmSubSample alias.
+ * @since 12
+ * @version 1.0
+ */
+typedef struct MetaDrmSubSample MetaDrmSubSample;
+
+/**
+ * @brief Cenc info of media.
+ * @since 12
+ * @version 1.0
+ */
+struct MetaDrmCencInfo {
+    /* Cenc algorithm used. */
+    MetaDrmCencAlgorithm algo;
+    /* Key id. */
+    uint8_t keyId[META_DRM_KEY_ID_SIZE];
+    /* Key id len. */
+    uint32_t keyIdLen;
+    /* Iv. */
+    uint8_t iv[META_DRM_IV_SIZE];
+    /* Iv len. */
+    uint32_t ivLen;
+    /* Whether ambiguity content exists, only used in TS format. */
+    uint32_t isAmbiguity;
+    /* Encrytped blocks num. */
+    uint32_t encryptBlocks;
+    /* Clear blocks num. */
+    uint32_t skipBlocks;
+    /* First encrypted payload offset. */
+    uint32_t firstEncryptOffset;
+    /* Subsamples info. */
+    MetaDrmSubSample subSample[META_DRM_MAX_SUB_SAMPLE_NUM];
+    /* Subsamples num. */
+    uint32_t subSampleNum;
+};
+/**
+ * @brief Struct MetaDrmCencInfo alias.
+ * @since 12
+ * @version 1.0
+ */
+typedef struct MetaDrmCencInfo MetaDrmCencInfo;
+
 #ifdef __cplusplus
 }
 #endif
 
-#endif // NATIVE_DRM_COMMON_H
\ No newline at end of file
+#endif // NATIVE_DRM_COMMON_H
diff --git a/multimedia/drm_framework/native_mediakeysession.h b/multimedia/drm_framework/native_mediakeysession.h
index 999aa04e1f36e8364863d01a41f88b92d5c3ee40..c6fdf82dc951a943284c1c40900b5ff60e6c596a 100644
--- a/multimedia/drm_framework/native_mediakeysession.h
+++ b/multimedia/drm_framework/native_mediakeysession.h
@@ -221,4 +221,4 @@ Drm_ErrCode OH_MediaKeySession_Destroy(MediaKeySession *mediaKeySessoin);
 }
 #endif
 
-#endif // OHOS_DRM_NATIVE_MEDIA_KEY_SYSTEM_H
\ No newline at end of file
+#endif // OHOS_DRM_NATIVE_MEDIA_KEY_SYSTEM_H