MEDIA_UTILS_LITE

• MEDIA_UTILS_LITE
  • Introduction
  • Directory Structure
  • Usage
  • Constraints
  • Repositories Involved

Introduction

This repository defines common information such as media error codes and data types required for audio and video recording and playback.

Data types

• SourceType: type of the media source to play
• BufferFlags: flags of the data carried in the buffer
• AudioSourceType: enumeration of audio input source types
• AudioCodecFormat: enumeration of audio data formats
• AudioStreamType: enumeration of audio stream types
• AudioBitWidth: enumeration of sampling bit width

The following table lists the error codes.

Code	Macro	Description
0xffffffff	ERR_INVALID_READ	Data reading failed.
0x0	SUCCESS	Operation succeeded.
0x3c10000	ERROR	Operation failed.
0x3c10001	ERR_ILLEGAL_STATE	Invalid status.
0x2A05	ERR_INVALID_PARAM	Invalid parameter.
0x3c10003	ERR_EARLY_PREPARE	Early start.
0x3c10004	ERR_SOURCE_NOT_SET	Media source not set.
0x3c10005	ERR_INVALID_OPERATION	Invalid operation.
0x2A09	ERR_NOFREE_CHANNEL	No free channel.
0x3c10007	ERR_READ_BUFFER	Error occurred during buffer reading.
0x3c10008	ERR_NOT_STARTED	Device not started.
0x3c100c8	ERR_UNKNOWN	Unknown error.

Figure 1 Position of this repository (in the dotted blue box) in the multimedia subsystem

Directory Structure

foundation/multimedia/media_utils_lite
├── interfaces    # Header file of the data types and media formats
└── hals       # HAL adaptation APIs
└── src        # Implementation of the data types and media formats

Usage

Build a single repository in the root directory.

# Select the development board.
hb set  
# Build this repository.
hb build media_service

Constraints

C++ 11 or later

Repositories Involved

Multimedia subsystem

camera_lite

camera_sample_lite

audio_lite

media_lite

media_utils_lite