# Software Source: [https://docs.qualcomm.com/doc/80-70014-7/topic/software.html](https://docs.qualcomm.com/doc/80-70014-7/topic/software.html) To design and manage the APIs, you must understand the organization of APIs in the code and the relationships, functions, and operations of the source code directory files. ## Application processor directory structure Source: [https://docs.qualcomm.com/doc/80-70014-7/topic/software.html](https://docs.qualcomm.com/doc/80-70014-7/topic/software.html) The QSH-exposed APIs are called the QSH client APIs for application development. The following resources explain the QSH client APIs tree and the location of each software component. **QSH client APIs** The QSH client APIs source code is in `/build-qcom-wayland/workspace/sources/sensinghub/sensing-hub` directory. ├───/sources/sensinghub/sensing-hub │ ├───apis - APIs │ └───proto - Proto API │ └───google │ └───protobuf │ ├───common - Common header file │ └───inc │ ├───examples │ └───SessionClient - Sample 1 source file │ └───session - Client APIs source and header files └───1.0 ├───inc └───src Copy to clipboard Note: To view and customize the source code, see the [Qualcomm Linux Yocto Guide](https://docs.qualcomm.com/bundle/publicresource/topics/80-70014-27). The sensing-hub source is available at `/build-qcom-wayland/workspace/sources/sensinghub/sensing-hub/`. ## Low-power processor directory structure Source: [https://docs.qualcomm.com/doc/80-70014-7/topic/software.html](https://docs.qualcomm.com/doc/80-70014-7/topic/software.html) The QSH software stack consists of the framework, API, sensor driver, and the algorithm components. This information is currently available for users who have full access to the proprietary software shipped with Qualcomm Linux. For more information, see *Software* in [Qualcomm Linux Sensors Guide - Addendum](https://docs.qualcomm.com/bundle/resource/topics/80-70014-7A/overview.html). Note: [Qualcomm Linux Sensors Guide - Addendum](https://docs.qualcomm.com/bundle/resource/topics/80-70014-7A/overview.html) is accessible only to the Authorized users. ## Build and flash aDSP Source: [https://docs.qualcomm.com/doc/80-70014-7/topic/software.html](https://docs.qualcomm.com/doc/80-70014-7/topic/software.html) This information is currently available for users who have full access to the proprietary software shipped with Qualcomm Linux. For more information, see *Software* in [Qualcomm Linux Sensors Guide - Addendum](https://docs.qualcomm.com/bundle/resource/topics/80-70014-7A/overview.html). Note: [Qualcomm Linux Sensors Guide - Addendum](https://docs.qualcomm.com/bundle/resource/topics/80-70014-7A/overview.html) is accessible only to the Authorized users. Last Published: Jul 12, 2024 [Previous Topic Interfaces](https://docs.qualcomm.com/bundle/publicresource/80-70014-7/topics/qsh_api_reference.md) [Next Topic Samples](https://docs.qualcomm.com/bundle/publicresource/80-70014-7/topics/samples.md)