path: root/audio/chmap.c
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* core: move contents to mpvcore (2/2)Stefano Pigozzi2013-08-061-1/+1
| | | | Followup commit. Fixes all the files references.
* chmap: fix oddity due to ambiguous 6.1 ffmpeg channel layoutwm42013-05-131-2/+3
| | | | | | | | FFmpeg (as well as Libav) have two layouts called "6.1": AV_CH_LAYOUT_6POINT1 and AV_CH_LAYOUT_6POINT1_BACK. We call them "6.1" and "6.1(back)". Change the default layout for 7 channels as well to return the same layout as av_get_default_channel_layout(). (Looks a bit questionable, but for now it's better to follow FFmpeg.)
* audio: fix ALSA 4 channel surround outputwm42013-05-131-1/+3
| | | | | | | | | It turns out that ALSA's 4 channel layout is different from mpv's and ffmpeg's 4.0 layout. Thus trying to do 4 channel output led to incorrect remixing via lib{av,sw}resample. Fix the default layouts for the internal filter chain as well, although I'm not sure if it matters at all.
* audio: add channel map selection functionwm42013-05-121-16/+24
| | | | | | | | | | | | | | | | | | | | The point is selecting a minimal fallback. The AOs will call this through the AO API, so it will be possible to add options affecting the general channel layout selection. It provides the following mechanism to AOs: - forcing the correct channel order - downmixing to stereo if no layout is available - allow 5.1 <-> 5.1(side) fallback - handling "unknown" channel layouts This is quite weak and lots of code/complexity for little gain. All AOs already made sure the channel order was correct, and the fallback is of little value, and could perhaps be done in the frontend instead, like stereo downmixing with --channels=2 is handled. But I'm not really sure how this stuff should _really_ work, and the new code will hopefully provides enough flexibility to make radical changes to channel layout negotiation easier.
* audio: add channel map APIwm42013-05-121-0/+478
Unused, will be used in the following commits. Let chmap.h define the number of maximum channels, because that is most convenient.