diff --git a/codec/v4_0/CodecTypes.idl b/codec/v4_0/CodecTypes.idl
deleted file mode 100644
index 0ba92ede83aea043e33e909aa8e45edeabc860c9..0000000000000000000000000000000000000000
--- a/codec/v4_0/CodecTypes.idl
+++ /dev/null
@@ -1,505 +0,0 @@
-/*
- * Copyright (c) 2025 Huawei Device Co., Ltd.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * @addtogroup Codec
- * @{
- *
- * @brief Defines APIs of the Codec module.
- *
- * The Codec module provides APIs for initializing the custom data and audio and video codecs,
- * setting codec parameters, and controlling and transferring data.
- *
- * @since 4.1
- * @version 3.0
- */
-
-/**
- * @file CodecTypes.idl
- *
- * @brief Defines custom data types used in the Codec module APIs,
- * including the codec types, audio and video parameters, and buffers.
- *
- *
- * @since 4.1
- * @version 2.0
- */
-
-/**
- * @brief Defines the path for the package of the Codec module APIs.
- *
- * @since 4.1
- * @version 2.0
- */
-package ohos.hdi.codec.v4_0;
-
-/**
- * @brief Enumerates the codec types.
-
- * @since 4.1
- * @version 2.0
- */
-enum CodecType {
- VIDEO_DECODER, /**< Video decoder. */
- VIDEO_ENCODER, /**< Video encoder. */
- AUDIO_DECODER, /**< Audio decoder. */
- AUDIO_ENCODER, /**< Audio encoder. */
- INVALID_TYPE, /**< Invalid type. */
-};
-
-/**
- * @brief Enumerates the types of audio and video that can be encoded or decoded.
-
- * @since 4.1
- * @version 2.1
- */
-enum AvCodecRole {
- MEDIA_ROLETYPE_IMAGE_JPEG = 0, /**< JPEG image. */
- MEDIA_ROLETYPE_VIDEO_AVC, /**< H.264 video. */
- MEDIA_ROLETYPE_VIDEO_HEVC, /**< H.265 video. */
- MEDIA_ROLETYPE_VIDEO_VVC, /**< H.266 video. */
- MEDIA_ROLETYPE_AUDIO_FIRST = 0x10000, /**< Audio. */
- MEDIA_ROLETYPE_AUDIO_AAC = 0x10000, /**< Advanced Audio Coding (AAC). */
- MEDIA_ROLETYPE_AUDIO_G711A, /**< G.711 a-law audio. */
- MEDIA_ROLETYPE_AUDIO_G711U, /**< G.711 μ-law audio. */
- MEDIA_ROLETYPE_AUDIO_G726, /**< G.726 audio. */
- MEDIA_ROLETYPE_AUDIO_PCM, /**< PCM audio. */
- MEDIA_ROLETYPE_AUDIO_MP3, /**< MP3. */
- MEDIA_ROLETYPE_INVALID, /**< Invalid type. */
-};
-
-/**
- * @brief Enumerates the codec profiles.
-
- * @since 4.1
- * @version 2.0
- */
-enum Profile {
- INVALID_PROFILE = 0, /**< Invalid profile. */
- AAC_LC_PROFILE = 0x1000, /**< AAC low complexity profile. */
- AAC_MAIN_PROFILE, /**< AAC main profile. */
- AAC_HE_V1_PROFILE, /**< Profile combining AAC high efficiency and spectral band replication (SBR),
- also known as HE-AAC, AAC+, or aacPlus v1. */
- AAC_HE_V2_PROFILE, /**< HE-AAC combined with SBR and Parametric Stereo (PS),
- also known as AAC++ or aacPlus v2. */
- AAC_LD_PROFILE, /**< AAC low delay profile. */
- AAC_ELD_PROFILE, /**< AAC enhanced low delay profile. */
- AVC_BASELINE_PROFILE = 0x2000, /**< H.264 baseline profile. */
- AVC_MAIN_PROFILE, /**< H.264 main profile. */
- AVC_HIGH_PROFILE, /**< H.264 high profile. */
- HEVC_MAIN_PROFILE = 0x3000, /**< H.265 main profile. */
- HEVC_MAIN_10_PROFILE, /**< H.265 10-bit main profile. */
-};
-
-/**
- * @brief Enumerates the playback capabilities.
-
- * @since 4.1
- * @version 2.0
- */
-enum CodecCapsMask {
- CODEC_CAP_ADAPTIVE_PLAYBACK = 0x1, /**< Adaptive playback. */
- CODEC_CAP_SECURE_PLAYBACK = 0x2, /**< Secure playback. */
- CODEC_CAP_TUNNEL_PLAYBACK = 0x4, /**< Tunnel playback. */
- CODEC_CAP_MULTI_PLANE = 0x10000, /**< Multi-plane (video image plane and audio channel plane) capability. */
-};
-
-/**
- * @brief Enumerates the audio sampling rates.
-
- * @since 4.1
- * @version 2.0
- */
-enum AudioSampleRate {
- AUD_SAMPLE_RATE_8000 = 8000, /**< 8000 */
- AUD_SAMPLE_RATE_12000 = 12000, /**< 12000 */
- AUD_SAMPLE_RATE_11025 = 11025, /**< 11025 */
- AUD_SAMPLE_RATE_16000 = 16000, /**< 16000 */
- AUD_SAMPLE_RATE_22050 = 22050, /**< 22050 */
- AUD_SAMPLE_RATE_24000 = 24000, /**< 24000 */
- AUD_SAMPLE_RATE_32000 = 32000, /**< 32000 */
- AUD_SAMPLE_RATE_44100 = 44100, /**< 44100 */
- AUD_SAMPLE_RATE_48000 = 48000, /**< 48000 */
- AUD_SAMPLE_RATE_64000 = 64000, /**< 64000 */
- AUD_SAMPLE_RATE_96000 = 96000, /**< 96000 */
- AUD_SAMPLE_RATE_INVALID, /**< Invalid sampling rate */
-};
-
-/**
- * @brief Enumerates the audio sampling formats.
- *
- * For the planar sampling format, the data of each channel is independently stored in data.
- * For the packed sampling format, only the first data is used, and the data of each channel is interleaved.
-
- * @since 4.1
- * @version 2.0
- */
-enum CodecAudioSampleFormat {
- AUDIO_SAMPLE_FMT_U8 = 0, /**< Unsigned 8-bit integer, packed. */
- AUDIO_SAMPLE_FMT_S16, /**< Signed 16-bit integer, packed. */
- AUDIO_SAMPLE_FMT_S32, /**< Signed 32-bit integer, packed. */
- AUDIO_SAMPLE_FMT_FLOAT, /**< Float, packed. */
- AUDIO_SAMPLE_FMT_DOUBLE, /**< Double, packed. */
- AUDIO_SAMPLE_FMT_U8P, /**< Unsigned 8-bit integer, planar. */
- AUDIO_SAMPLE_FMT_S16P, /**< Signed 16-bit integer, planar. */
- AUDIO_SAMPLE_FMT_S32P, /**< Signed 32-bit integer, planar. */
- AUDIO_SAMPLE_FMT_FLOATP, /**< Float, planar. */
- AUDIO_SAMPLE_FMT_DOUBLEP, /**< Double, planar. */
- AUDIO_SAMPLE_FMT_INVALID, /**< Invalid sampling format. */
-};
-
-/**
- * @brief Enumerates the codec processing modes.
-
- * @since 4.1
- * @version 2.0
- */
-enum CodecProcessMode {
- PROCESS_BLOCKING_INPUT_BUFFER = 0x1, /**< Input buffer in sync mode. */
- PROCESS_BLOCKING_OUTPUT_BUFFER = 0x2, /**< Output buffer in sync mode. */
- PROCESS_BLOCKING_CONTROL_FLOW = 0x4, /**< Control flow in sync mode. */
- PROCESS_NONBLOCKING_INPUT_BUFFER = 0x100, /**< Input buffer in async mode. */
- PROCESS_NONBLOCKING_OUTPUT_BUFFER = 0x200, /**< Output buffer in async mode. */
- PROCESS_NONBLOCKING_CONTROL_FLOW = 0x400, /**< Control flow in asynchronous mode. */
-};
-
-/**
- * @brief Enumerates the shared memory types.
-
- * @since 4.1
- * @version 2.0
- */
-enum ShareMemTypes {
- READ_WRITE_TYPE = 0x1, /**< Shared memory that is readable and writable. */
- READ_ONLY_TYPE = 0x2, /**< Shared memory that is read-only. */
-};
-
-/**
- * @brief Enumerates the bit rate modes.
-
- * @since 4.1
- * @version 2.1
- */
-enum BitRateMode {
- BIT_RATE_MODE_INVALID, /**< Invalid value. */
- BIT_RATE_MODE_VBR, /**< Variable bit rate. */
- BIT_RATE_MODE_CBR, /**< Constant bit rate. */
- BIT_RATE_MODE_CQ, /**< Constant quality. */
- BIT_RATE_MODE_VCBR, /**< Constrained variable bit rate. */
- BIT_RATE_MODE_ABR, /**< Average bit rate. */
- BIT_RATE_MODE_CBR_Rlambda, /**< Constant bit rate with rlambda. */
-};
-
-/**
- * @brief Enumerates the component states.
-
- * @since 4.1
- * @version 2.0
- */
-enum CodecEventType {
- CODEC_EVENT_CMD_COMPLETE, /**< The component has completed a command. */
- CODEC_EVENT_ERROR, /**< The component has detected an error. */
- CODEC_EVENT_MARK, /**< The component has detected the buffer mark. */
- CODEC_EVENT_PORT_SETTINGS_CHANGED, /**< The component has reported port setting changes. */
- CODEC_EVENT_BUFFER_FLAG, /**< The component has detected an EOS. */
- CODEC_EVENT_RESOURCES_ACQUIRED, /**< The component has been granted resources and is automatically
- starting the state change from CODEC_STATE_WAIT_FOR_RESOURCES
- to CODEC_STATE_IDLE. */
- CODEC_EVENT_COMPONENT_RESUMED, /**< The component is resumed due to reacquisition of resources. */
- CODEC_EVENT_DYNAMIC_RESOURCES_AVAILABLE, /**< The component has acquired previously unavailable
- dynamic resources. */
- CODEC_EVENT_PORT_FORMAT_DETECTED, /**< The component has detected a supported format. */
- CODEC_EVENT_KHRONOS_EXTENSIONS = 0x6F000000, /**< Reserved region for introducing Khronos standard extensions. */
- CODEC_EVENT_VENDOR_START_UNUSED = 0x7F000000, /**< Reserved region for introducing vendor extensions. */
- CODEC_EVENT_MAX = 0x7FFFFFFF, /**< Maximum value. */
-};
-
-/**
- * @brief Enumerates the cmd parameters of the SendCommand API in ICodecComponent.
-
- * @since 4.1
- * @version 2.0
- */
-enum CodecCommandType
-{
- CODEC_COMMAND_STATE_SET, /**< Change the component state. */
- CODEC_COMMAND_FLUSH, /**< Flush the data queue of a component. */
- CODEC_COMMAND_PORT_DISABLE, /**< Disable a port on a component. */
- CODEC_COMMAND_PORT_ENABLE, /**< Enable a port on a component. */
- CODEC_COMMAND_MARK_BUFFER, /**< Mark a component/buffer for observation. */
- CODEC_COMMAND_KHRONOS_EXTENSIONS = 0x6F000000, /**< Reserved region for introducing Khronos standard extensions. */
- CODEC_COMMAND_VENDOR_START_UNUSED = 0x7F000000, /**< Reserved region for introducing vendor extensions. */
- CODEC_COMMAND_MAX = 0x7FFFFFFF, /**< Maximum value. */
-};
-
-/**
- * @brief Enuerates the component states.
-
- * @since 4.1
- * @version 2.0
- */
-enum CodecStateType
-{
- CODEC_STATE_INVALID, /**< The component has detected that its internal data structures are
- corrupted so that the state cannot be correctly determined. */
- CODEC_STATE_LOADED, /**< The component has been loaded but has not completed
- initialization. Only ICodecComponent.SetParameter
- and ICodecComponent.GetParameter can be called for a
- component in this state. */
- CODEC_STATE_IDLE, /**< The component initialization is complete, and the component is
- ready to start. */
- CODEC_STATE_EXECUTING, /**< The component has accepted the start command and is processing
- data (if the data is available). */
- CODEC_STATE_PAUSE, /**< The component has received the pause command. */
- CODEC_STATE_WAIT_FOR_RESOURCES, /**< The component is waiting for resources, either after preemption
- or before it acquires the requested resources. */
- CODEC_STATE_KHRONOS_EXTENSIONS = 0x6F000000, /**< Reserved region for introducing Khronos standard extensions. */
- CODEC_STATE_VENDOR_START_UNUSED = 0x7F000000, /**< Reserved region for introducing vendor extensions. */
- CODEC_STATE_MAX = 0x7FFFFFFF, /**< Maximum value. */
-};
-
-/**
- * @brief Enuerates the port supplier preferences when establishing a tunnel between two ports.
-
- * @since 4.1
- * @version 2.0
- */
-enum CodecBufferSupplierType
-{
- CODEC_BUFFER_SUPPLY_UNSPECIFIED = 0, /**< The port that provides the buffers is not specified. */
- CODEC_BUFFER_SUPPLY_INPUT, /**< The input port provides the buffers. */
- CODEC_BUFFER_SUPPLY_OUTPUT, /**< The output port provides the buffers. */
- CODEC_BUFFER_SUPPLY_KHRONOS_EXTENSIONS = 0x6F000000, /**< Reserved region for introducing Khronos
- standard extensions. */
- CODEC_BUFFER_SUPPLY_VENDOR_START_UNUSED = 0x7F000000, /**< Reserved region for introducing vendor extensions. */
- CODEC_BUFFER_SUPPLY_MAX = 0x7FFFFFFF, /**< Maximum value. */
-};
-
-/**
- * @brief Defines the alignment structure.
-
- * @since 4.1
- * @version 2.0
- */
-struct Alignment {
- int widthAlignment; /**< Alignment value of the width. */
- int heightAlignment; /**< Alignment value of the height. */
-};
-
-/**
- * @brief Defines a rectangle.
-
- * @since 4.1
- * @version 2.0
- */
-struct Rect {
- int width; /**< Width of the rectangle. */
- int height; /**< Height of the rectangle. */
-};
-
-/**
- * @brief Defines a value range.
-
- * @since 4.1
- * @version 2.0
- */
-struct RangeValue {
- int min; /**< Minimum value. */
- int max; /**< Maximum value. */
-};
-
-/**
- * @brief Enuerates the video encoding and decoding support feature key.
-
- * @since 6.0
- * @version 1.0
- */
-enum VideoFeatureKey {
- VIDEO_FEATURE_PASS_THROUGH = 0,
- VIDEO_FEATURE_LOW_LATENCY,
- VIDEO_FEATURE_TSVC,
- VIDEO_FEATURE_WATERMARK,
- VIDEO_FEATURE_SEEK_WITHOUT_FLUSH,
- VIDEO_FEATURE_QP_MAP,
- VIDEO_FEATURE_LTR,
- VIDEO_FEATURE_ENCODE_B_FRAME,
-};
-
-/**
- * @brief Defines the video encoding and decoding support feature.
-
- * @since 6.0
- * @version 1.0
- */
-struct VideoFeature {
- enum VideoFeatureKey key;
- boolean support;
- int[] extendInfo;
-};
-
-/**
- * @brief Defines the video encoding and decoding capabilities.
-
- * @since 4.1
- * @version 7.0
- */
-struct CodecVideoPortCap {
- struct Rect minSize; /**< Minimum resolution supported. */
- struct Rect maxSize; /**< Maximum resolution supported. */
- struct Alignment whAlignment; /**< Alignment values of the width and height. */
- struct RangeValue blockCount; /**< Value range for the number of blocks supported. */
- struct RangeValue blocksPerSecond; /**< Value range for the number of blocks processed per second. */
- struct Rect blockSize; /**< Block size supported. */
- int[] supportPixFmts; /**< Supported pixel formats. For details, see PixeFormat defined by
- display_type.h in {@link Display}. */
- enum BitRateMode[] bitRatemode; /**< Transmission rate modes, which can be constant or variable.
- For details, see {@link BitRateMode}. */
- struct RangeValue frameRate; /**< Frame rate range. */
- int[] measuredFrameRate; /**< Frame rate measured. */
- struct VideoFeature[] features; /**< video support features. */
-};
-
-/**
- * @brief Defines the audio encoding and decoding capabilities.
-
- * @since 4.1
- * @version 2.0
- */
-struct CodecAudioPortCap {
- int[] sampleFormats; /**< Supported audio sampling formats. For details, see {@link AudioSampleFormat}. */
- int[] sampleRate; /**< Supported audio sampling rates. For details, see {@link AudioSampleRate}. */
- int[] channelLayouts; /**< Supported channel layouts, which include single channel, balanced channel,
- and 3D stereo channel. */
- int[] channelCount; /**< Supported number of audio channels. */
-};
-
-/**
- * @brief Defines the audio and video encoding and decoding capabilities.
-
- * @since 4.1
- * @version 2.0
- */
-struct PortCap {
- struct CodecVideoPortCap video; /**< Video encoding and decoding capabilities. */
- struct CodecAudioPortCap audio; /**< Audio encoding and decoding capabilities. */
-};
-
-/**
- * @brief Defines the version type of a component.
-
- * @since 4.1
- * @version 2.0
- */
-struct CodecVerType {
- unsigned char majorVersion; /**< Major version accessor element. */
- unsigned char minorVersion; /**< Minor version accessor element. */
- unsigned char revision; /**< Revision version accessor element. */
- unsigned char step; /**< Step version accessor element. */
-};
-
-/**
- * @brief Defines the component version information.
-
- * @since 4.1
- * @version 2.0
- */
-union CodecVersionType {
- struct CodecVerType version; /**< Component version. */
- unsigned int nVersion; /**< 32-bit value to make accessing the version easily done in a single
- word size copy or compare operation. */
-};
-
-/**
- * @brief Defines the codec capabilities.
-
- * @since 4.1
- * @version 2.0
- */
-struct CodecCompCapability {
- enum AvCodecRole role; /**< Media type. */
- enum CodecType type; /**< Codec type. */
- String compName; /**< Name of the codec component. */
- int[] supportProfiles; /**< Supported profiles. For details, see {@link Profile}. */
- int maxInst; /**< Maximum instance. */
- boolean isSoftwareCodec; /**< Whether it is a software codec. */
- int processModeMask; /**< Codec processing mode mask. For details,
- see {@link CodecProcessMode}. */
- unsigned int capsMask; /**< Mask of the codec playback capabilities. For details,
- see {@link CodecCapsMask}. */
- struct RangeValue bitRate; /**< Supported bit rate range. */
- struct PortCap port; /**< Supported audio and video encoding/decoding capabilities. */
- boolean canSwapWidthHeight; /**< Whether width and height verification is supported. */
-};
-
-/**
- * @brief Defines the codec buffer information.
-
- * @since 4.1
- * @version 2.0
- */
-struct OmxCodecBuffer {
- unsigned int bufferId; /**< Buffer ID. */
- unsigned int size; /**< Size of the structure. */
- union CodecVersionType version; /**< Component version. */
- unsigned int bufferType; /**< Buffer type. For details, see {@link CodecBufferType}. */
- NativeBuffer bufferhandle; /**< Buffer handle used for encoding or decoding. For details,
- see {@link NativeBuffer}. */
- FileDescriptor fd; /**< Anonymous shared memory file descriptor. */
- unsigned int allocLen; /**< Size of the buffer allocated. */
- unsigned int filledLen; /**< Size of the buffer filled. */
- unsigned int offset; /**< Offset to the start position of the valid data in the buffer. */
- FileDescriptor fenceFd; /**< Fence file descriptor. */
- enum ShareMemTypes type; /**< Shared memory type. */
- long pts; /**< Timestamp of the first logical sample in the buffer. */
- unsigned int flag; /**< Buffer specific flag. */
- unsigned char[] alongParam; /**< Along frame parameter. */
-};
-
-/**
- * @brief Defines the structure that is used to pass data from an output port to an input port.
-
- * @since 4.1
- * @version 2.0
- */
-struct CodecTunnelSetupType {
- unsigned int tunnelFlags; /**< Bit flags for tunneling. */
- enum CodecBufferSupplierType supplier; /**< Supplier preference. */
-};
-
-/**
- * @brief Defines the component information.
-
- * @since 4.1
- * @version 2.0
- */
-struct CompVerInfo {
- String compName; /**< Component name. */
- unsigned char[] compUUID; /**< UUID of the component. */
- union CodecVersionType compVersion; /**< OMX component version. */
- union CodecVersionType specVersion; /**< Version of the specifications on which the component is built. */
-};
-
-/**
- * @brief Defines the event information to report.
-
- * @since 4.1
- * @version 2.0
- */
-struct EventInfo {
- long appData; /**< Upper-layer instance passed in when the callback is invoked. */
- unsigned int data1; /**< Error type, which can be portIndex or other data. */
- unsigned int data2; /**< Data 2 carried in the reported event. */
- byte[] eventData; /**< Data carried in the reported event. */
-};
diff --git a/display/graphic/common/v2_2/BufferHandleMetaKeyType.idl b/display/graphic/common/v2_2/BufferHandleMetaKeyType.idl
index b3d8175dca229559198906bdf8e25ff911730633..cabea1db9723bc5d75be39f7c083e9a7f68d2629 100644
--- a/display/graphic/common/v2_2/BufferHandleMetaKeyType.idl
+++ b/display/graphic/common/v2_2/BufferHandleMetaKeyType.idl
@@ -29,4 +29,15 @@ import ohos.hdi.display.graphic.common.v2_1.BufferHandleMetaKeyType;
*/
enum BufferHandleAttrKey : ohos.hdi.display.graphic.common.v2_1.BufferHandleAttrKey {
ATTRKEY_VIDEO_AI_HDR_LUT = 4099, // value: grid lut for video aihdr
+ ATTRKEY_EXTERNAL_LOWDELAY_INFO = 4100, // value: ExternalLowDelayInfo
+};
+
+/**
+ * @brief ExternalLowDelayInfo of [value] in GetMetadata/SetMetaData, to trans metadata.
+ *
+ * @since 6.0
+ * @version 2.2
+ */
+struct ExternalLowDelayInfo {
+ unsigned int enhanceLayerFlag; // enhance layer flag for lowdelay dual420
};
\ No newline at end of file