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libobs: Add surround sound audio support

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(This commit also modifies the following modules: UI,
deps/media-playback, coreaudio-encoder, decklink, linux-alsa,
linux-pulseaudio, mac-capture, obs-ffmpeg, obs-filters, obs-libfdk,
obs-outputs, win-dshow, and win-wasapi)

Adds surround sound audio support to the core, core plugins, and user
interface.

Compatible streaming services: Twitch, FB 360 live
Compatible protocols: rtmp / mpeg-ts tcp udp
Compatible file formats: mkv mp4 ts  (others untested)
Compatible codecs: ffmpeg aac, fdk_aac, CoreAudio aac,
		   opus, vorbis, pcm (others untested).
Tested streaming servers: wowza, nginx
	 HLS, mpeg-dash : surround passthrough
Html5 players tested with live surround:
	 videojs, mediaelement, viblast (hls+dash), hls.js
Decklink: on win32, swap channels order for 5.1 7.1
         (due to different channel mapping on wav, mpeg, ffmpeg)
Audio filters: surround working.
Monitoring: surround working (win macOs linux (pulse-audio)).
VST:	 stereo plugins keep in general only the first two channels.
	 surround plugins should work (e.g. mcfx does).
OS: win, macOs, linux (alsa, pulse-audio).
Misc: larger audio bitrates unlocked to accommodate more channels
NB: mf-aac only supports mono and stereo + 5.1 on win 10
         (not implemented due to lack of usefulness)

Closes jp9000/obs-studio#968
This commit is contained in:
pkviet
2017-05-27 02:15:54 +02:00
committed by jp9000
parent 54ecfc8fe7
commit bbac3280c1
30 changed files with 628 additions and 116 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
plugins/linux-alsa/alsa-input.c
View File

@@ -622,13 +622,13 @@ enum audio_format _alsa_to_obs_audio_format(snd_pcm_format_t format)
enum speaker_layout _alsa_channels_to_obs_speakers(unsigned int channels)
{
switch(channels) {
case 1: return SPEAKERS_MONO;
case 2: return SPEAKERS_STEREO;
case 3: return SPEAKERS_2POINT1;
case 4: return SPEAKERS_SURROUND;
case 5: return SPEAKERS_4POINT1;
case 6: return SPEAKERS_5POINT1;
case 8: return SPEAKERS_7POINT1;
case 1: return SPEAKERS_MONO;
case 2: return SPEAKERS_STEREO;
case 3: return SPEAKERS_2POINT1;
case 4: return SPEAKERS_QUAD;
case 5: return SPEAKERS_4POINT1;
case 6: return SPEAKERS_5POINT1;
case 8: return SPEAKERS_7POINT1;
}
return SPEAKERS_UNKNOWN;