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homekit: dummy audio track if necessary

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This commit is contained in:
Koushik Dutta
2021-09-17 14:03:18 -07:00
parent 06bd624d20
commit bbe3f20ee8
1 changed files with 17 additions and 3 deletions
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20
plugins/homekit/src/types/camera.ts
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@@ -349,15 +349,29 @@ addSupportedType({
const videoKey = Buffer.concat([session.prepareRequest.video.srtp_key, session.prepareRequest.video.srtp_salt]);
const audioKey = Buffer.concat([session.prepareRequest.audio.srtp_key, session.prepareRequest.audio.srtp_salt]);
const noAudio = ffmpegInput.mediaStreamOptions && ffmpegInput.mediaStreamOptions.audio === null;
const args: string[] = [];
const storage = deviceManager.getMixinStorage(device.id, undefined);
// decoder arguments
const videoDecoderArguments = storage.getItem('videoDecoderArguments') || '';
if (videoDecoderArguments) {
args.push(...evalRequest(videoDecoderArguments, request));
}
// ffmpeg input for decoder
args.push(...ffmpegInput.inputArguments);
// dummy audio
if (!noAudio) {
// create a dummy audio track if none actually exists.
// this track will only be used if no audio track is available.
// https://stackoverflow.com/questions/37862432/ffmpeg-output-silent-audio-track-if-source-has-no-audio-or-audio-is-shorter-th
args.push('-f', 'lavfi', '-i', 'anullsrc=cl=1', '-shortest');
}
// video encoding
args.push(
"-an", '-sn', '-dn',
);
@@ -400,8 +414,8 @@ addSupportedType({
`srtp://${session.prepareRequest.targetAddress}:${session.prepareRequest.video.port}?rtcpport=${session.prepareRequest.video.port}&pkt_size=${videomtu}`
)
const probe = await probeVideoCamera(device);
if (!probe.noAudio) {
// audio encoding
if (!noAudio) {
const codec = (request as StartStreamRequest).audio.codec;
args.push(
"-vn", '-sn', '-dn',
@@ -443,8 +457,8 @@ addSupportedType({
session.cp = cp;
// audio talkback
if (twoWayAudio) {
// const demuxer = await createRtpDemuxer(audioReturn, request.audio.srtp_key, request.audio.srtp_salt);
session.demuxer = new RtpDemuxer(device.name, console, session.audioReturn);
const socketType = session.prepareRequest.addressVersion === 'ipv6' ? 'udp6' : 'udp4';