Add zero-channel BlackHole variant with updated installation process #849
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Implements a zero-channel version of BlackHole that acts as an audio sink (/dev/null equivalent) for applications that need to terminate audio output. This enables advanced audio routing workflows where audio data should be discarded rather than looped back. Key changes: - Add zero-channel safety validation and buffer allocation handling - Modify memory operations to handle zero-byte operations safely - Update build system to include 0-channel variant (BlackHole0ch) - Maintain compatibility with existing multi-channel versions - Comprehensive README documentation with use cases and examples - Updated CHANGELOG.md with feature description - Added detailed build instructions for developers The zero-channel device appears as "BlackHole 0ch" in Audio MIDI Setup and can be selected by applications as an output device that silently discards all audio data. Use cases: - Audio software development and testing - Automated testing without sound output - Advanced audio routing and stream termination - System administration and selective audio muting 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]>
- build_all_variants.sh: Build all BlackHole variants including 0ch - verify_zero_channel.sh: Verify zero-channel installation and functionality These scripts help developers and users work with the new zero-channel audio termination feature.
- Remove 0ch from standard installer build loop - Add manual build instructions for 0ch variant in README - Create dedicated installer script for 0ch variant - Clarify 0ch is for development/testing as audio termination device 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]>
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