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libobs: Add surround sound audio support

Browse Source 
(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

15
plugins/win-wasapi/win-wasapi.cpp
View File

@@ -15,8 +15,11 @@ using namespace std;
static void GetWASAPIDefaults(obs_data_t *settings);
#define KSAUDIO_SPEAKER_4POINT1 (KSAUDIO_SPEAKER_QUAD|SPEAKER_LOW_FREQUENCY)
// Fix inconsistent defs of speaker_surround between avutil & wasapi
#define KSAUDIO_SPEAKER_2POINT1 (KSAUDIO_SPEAKER_STEREO|SPEAKER_LOW_FREQUENCY)
#define KSAUDIO_SPEAKER_SURROUND_AVUTIL \
(KSAUDIO_SPEAKER_STEREO|SPEAKER_FRONT_CENTER)
#define KSAUDIO_SPEAKER_4POINT1 (KSAUDIO_SPEAKER_QUAD|SPEAKER_LOW_FREQUENCY)
class WASAPISource {
ComPtr<IMMDevice> device;
@@ -244,11 +247,11 @@ static speaker_layout ConvertSpeakerLayout(DWORD layout, WORD channels)
case KSAUDIO_SPEAKER_QUAD: return SPEAKERS_QUAD;
case KSAUDIO_SPEAKER_2POINT1: return SPEAKERS_2POINT1;
case KSAUDIO_SPEAKER_4POINT1: return SPEAKERS_4POINT1;
case KSAUDIO_SPEAKER_SURROUND: return SPEAKERS_SURROUND;
case KSAUDIO_SPEAKER_5POINT1: return SPEAKERS_5POINT1;
case KSAUDIO_SPEAKER_5POINT1_SURROUND: return SPEAKERS_5POINT1_SURROUND;
case KSAUDIO_SPEAKER_7POINT1: return SPEAKERS_7POINT1;
case KSAUDIO_SPEAKER_7POINT1_SURROUND: return SPEAKERS_7POINT1_SURROUND;
case KSAUDIO_SPEAKER_SURROUND_AVUTIL: return SPEAKERS_SURROUND;
case KSAUDIO_SPEAKER_5POINT1: return SPEAKERS_5POINT1_SURROUND;
case KSAUDIO_SPEAKER_5POINT1_SURROUND: return SPEAKERS_5POINT1;
case KSAUDIO_SPEAKER_7POINT1: return SPEAKERS_7POINT1_SURROUND;
case KSAUDIO_SPEAKER_7POINT1_SURROUND: return SPEAKERS_7POINT1;
}
return (speaker_layout)channels;