df7fa3e296
This change introduces a new feature to the mobile application - audio I/O support, which allows the user to speak right from the host side running mobile through its ordinary mic and speakers. The audio I/O is based on libosmogapk [1][2], which in its turn uses the ALSA sound system for the playback and capture. This is a new optional dependency of mobile, which is automatically picked up if available during the build configuration. Whether to depend on it or not can be controlled using '--with-gapk-io'. The API offered by libosmogapk implies to use the processing chains, which generally consist of a source block, several processing blocks, and a sink block. The mobile app implements the following chains: - 'pq_audio_source' (voice capture -> frame encoding), - 'pq_audio_sink' (frame decoding -> voice playback). both taking/storing TCH frames from/to the following two buffers: - 'tch_fb_ul' - a buffer for to be played DL TCH frames, - 'tch_fb_dl' - a buffer for encoded UL TCH frames. The buffers are served by a new function gapk_io_dequeue(). [1] https://gitea.osmocom.org/osmocom/gapk/ [1] https://osmocom.org/projects/gapk Change-Id: Ib86b0746606c191573cc773f01172afbb52f33a9 Related: OS#5599 |
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| .. | ||
| common | ||
| misc | ||
| mobile | ||
| modem | ||
| Makefile.am | ||