Android HAL Audio/ALSA

4 weeks ago

Bengaluru, Karnataka, India Eximietas Design Full time

About Eximietas:

Eximietas, a technology services and solutions company headquartered in San Jose, CA with a global footprint that extends to Bangalore, Chennai and Bhubaneswar in India. Eximietas Design is a leading technology firm specializing in (VLSI/Embedded SW/Cloud Computing/Cyber Security/AI/ML) solutions. With a commitment to innovation and excellence, we empower businesses to thrive in the dynamic digital landscape. Our success is fueled by the expertise of our engineering leadership team, drawn from industry giants such as Google, Cisco, Microsoft, Oracle, Uber, Broadcom, and Sun.

Job Overview:

Job Title: Android HAL with Audio/ALSA driver

Location: Bengaluru

Notice period: 0-15Days (Immediate)

Experience: 5- 18 years

Job Summary :

We are looking for a skilled Android HAL Engineer with expertise in audio systems and ALSA drivers. This position requires an in-depth understanding of Android's hardware abstraction layers, audio frameworks, and low-level ALSA driver integration to deliver high-quality audio solutions on Android-based devices. The ideal candidate will work closely with our hardware and software teams to develop, optimize, and maintain Android's audio HAL and ensure seamless interaction with ALSA audio drivers.

Key Responsibilities :

  • Design, implement, and optimize Android HAL (Hardware Abstraction Layer) interfaces for audio functionality.
  • Integrate and configure ALSA audio drivers into the Android platform to ensure efficient and high-quality audio performance.
  • Work with the Android Audio Framework to handle playback, recording, and routing of audio streams between applications and hardware.
  • Collaborate with hardware vendors to integrate device-specific audio features (e.g., DSP, noise cancellation, special audio hardware).
  • Debug and troubleshoot audio issues related to Android's HAL, ALSA, or audio driver implementation.
  • Develop and maintain audio policies, managing routing, volume controls, and mixer controls through ALSA.
  • Ensure smooth integration of audio hardware with Android's Audio Policy Manager for the correct routing of audio.
  • Test and validate audio features on multiple hardware configurations to ensure stability and high-quality performance.
  • Write comprehensive documentation for HAL interfaces, configurations, and integration steps.
  • Stay up-to-date with new Android audio-related features and best practices, as well as evolving ALSA technologies.

Skills & Qualifications :

Must Have :

  • Strong knowledge of Android HAL architecture and how it interacts with the Android Framework.
  • Expertise in ALSA (Advanced Linux Sound Architecture) drivers and audio subsystem.
  • Proven experience with audio routing, mixer control, and PCM (Pulse Code Modulation) streaming in Android or Linux-based systems.
  • Deep understanding of audio codec integration and hardware abstraction.
  • Proficiency in C/C++ programming languages for Android and Linux kernel development.
  • Experience with debugging and profiling audio drivers using tools like ADB, ALSA utilities, or kernel-level debugging tools.
  • Strong problem-solving skills and the ability to troubleshoot complex hardware-software integration issues.
  • Familiarity with Android's audio policy management, volume control, and stream management.
  • Experience in version control systems like Git.

Nice to Have :

  • Familiarity with Android audio architecture, including AOSP (Android Open Source Project) audio components.
  • Experience with audio-related tools such as aplay, arecord, or other ALSA tools for testing.
  • Knowledge of DSP (Digital Signal Processing) integration with Android audio systems.
  • Experience with Android's low-level driver development and device tree modifications for audio hardware.
  • Knowledge of cross-platform audio frameworks such as OpenSL ES or AAudio (for newer Android versions).
  • Experience working with Android's MediaCodec and AudioTrack/AudioRecord classes.

Education and Experience :

  • Bachelor's or Master's degree in Computer Science, Electrical Engineering, or a related field.
  • 5+ years of experience working with Android HAL, audio frameworks, or Linux kernel audio drivers.
  • Prior experience with ALSA driver development is highly preferred.

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