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* test: update cmocka version to 1.0Stefano Pigozzi2015-06-131-3/+3
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* audio: simplify furtherwm42015-05-081-12/+3
| | | | | | Drop mp_chmap_diff() (which is unused too now), and implement mp_chmap_diffn() in a slightly simpler way. (Too bad there is no standard function for counting set bits.)
* audio: remove mp_chmap_contains()wm42015-05-081-24/+0
| | | | It's unsued now.
* chmap_sel: add multichannel fallback heuristicStefano Pigozzi2014-12-291-0/+56
Instead of just failing during channel map selection, try to select a close layout that makes most sense and upmix/downmix to that instead of failing AO initialization. The heuristic is rather simple, and uses the following steps: 1) If mono is required always prefer stereo to a multichannel upmix. 2) Search for an upmix that is an exact superset of the required channel map. 3) Search for a downmix that is the exact subset of the required channel map. 4) Search for either an upmix or downmix that is the closest (minimum difference of channels) to the required channel map.