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README
Apache-2.0

媒体引擎组件

简介

HiStreamer是一个轻量级的媒体引擎组件,提供播放、录制等场景的媒体数据流水线处理。

  • 播放场景分为如下几个节点:数据源读取、解封装、解码、输出;
  • 录制场景分为如下几个节点:数据源读取、编码、封装、输出。

这些节点的具体功能,主要在插件中实现。可以插件的形式扩展支持新的数据源、封装格式、编解码格式、输出方式。

逻辑架构

HiStreamer作为媒体引擎,向上对接player_framework(standard设备上)或者media_lite(mini/small设备上),再对外提供应用API。它内部分为三层:

  • 应用场景封装层: 比如HiPlayer, HiRecorder。
  • Pipeline框架层: 包括Pipeline框架,各个Filter节点实现。
  • 插件层: 包括插件框架,各种插件。

逻辑架构图

插件列表

HiStreamer插件列表如下:

插件名称 路径 外部依赖 License 功能 适用场景
FFMPEG Adapter plugins/ffmpeg_adapter FFMPEG LGPL etc. 解封装:mp3,m4a,mp4,wav
解码:mp3,aac
支持动态链接的
small/standard设备
File Source plugins/source/file_source FileSystem Apache 读取文件数据 所有设备
Minimp3 Adapter plugins/minimp3_adapter minimp3 CC0 解封装: mp3
解码: mp3
所有设备
Minimp4 Demuxer plugins/demuxer/minimp4_demuxer minimp4 CC0 解封装: m4a 所有设备
Aac Demuxer plugins/demuxer/aac_demuxer NA Apache 解封装: aac 所有设备
HDI Sink plugins/hdi_adapter Audio HDI Apache 播放音乐 mini/small设备

目录

仓目录结构如下:

/foundation/multimedia/histreamer      # HiStreamer媒体引擎组件业务代码
├─LICENSE                              # 证书文件
├─engine                               # 引擎代码
│  ├─foundation                        # 基础工具类, 包括OS适配
│  ├─include                           # 为其它模块调用histreamer暴露必要的头文件,包括调用pipeline/filter,或者调用插件
│  │  ├─foundation                     # histreamer基础工具库,包括日志打印、Buffer工具、操作系统适配、语言扩展等
│  │  ├─pipeline                       # pipeline框架的头文件,主要是pipeline/filter接口
│  │  └─plugin                         # 插件相关的头文件
│  │      ├─common                     # 插件接口依赖的基础类型头文件
│  │      └─interface                  # 插件接口
│  ├─pipeline                          # pipeline框架
│  │  ├─core                           # pipeline核心实现
│  │  ├─factory                        # filter工厂
│  │  └─filters                        # 若干filter节点实现
│  │      ├─codec                      # 编解码节点实现
│  │      ├─common                     # filters依赖的基础类型定义
│  │      ├─demux                      # 解封装节点实现
│  │      ├─muxer                      # 封装节点实现
│  │      ├─sink                       # 输出节点实现
│  │      └─source                     # 数据源节点实现
│  ├─plugin                            # 插件
│  │  ├─common                         # 插件接口依赖的基础类型定义
│  │  ├─core                           # 插件框架,各个插件的代理类
│  │  └─plugins                        # 若干插件实现
│  │      ├─codec_adapter              # 硬件编解码适配
│  │      ├─minimp3_adapter            # minimp3适配
│  │      ├─ffmpeg_adapter             # FFMPEG适配(适配成封装解封装、编解码插件)
│  │      ├─hdi_adapter                # HDI适配(适配成输出插件)
│  │      ├─lite_aac_decoder           # 轻量级AAC解码器插件
│  │      ├─demuxer                    # 解封装插件
│  │      ├─sink                       # 输出插件
│  │      └─source                     # 数据源插件
│  └─scene                             # 播放录制等场景的封装实现
│  │  ├─common                         # 共用的基础类型定义
│  │  ├─lite                           # 对接到轻量设备的接口实现
│  │  ├─player                         # 播放场景实现
│  │  ├─recorder                       # 录制场景实现
│  │  └─standard                       # 对接到标准设备的接口实现
└─interface                            # 引擎对外接口

相关仓

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简介

提供媒体各模块需要的公共能力(基础类型AVFormat/AVBuffer/AVBufferQueue封装、跨平台Task/Mutex/AutoLock/ConditionVariable接口封装、插件管理机制、Pipeline机制) 展开 收起
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