Is it possible to turn on/off DTX mode?

[chapayGhub]

Hey

In c/c++ i can turn on DTX by code below

	opus_encoder_ctl(enc, OPUS_SET_DTX(enable ? 1 : 0));

and can skip data without voice

int32_t r = opus_encode(enc, data, static_cast<int>(len), buffer, 4096);
if ( r<=0 ) {
        //some error
} else if( r<=2 ) {
        //https://stackoverflow.com/questions/39718307/how-to-use-opus-dtx-from-opensource-opus-demo-binary
        /*
         When using Opus over a network, using a protocol such as RTP where the packets are timestamped, DTX may be enabled if you want to reduce the packets sent during periods where there is no voice activity.
         A packet would still be sent about every 400 ms, updating background noise.
         Using the packet timestamps the receiver can determine the duration of any gaps and fill them in with the background noise to keep it sounding natural.

         Enable DTX in the encoder using opus_encoder_ctl(enc, OPUS_SET_DTX(1));
         , or with the -dtx option on opus_demo.
         Then, simply do not send any packets produced by the encoder with a length of 2 bytes or less.
         (These "DTX packets" are just zero-length frames, with a normal 1- or 2-byte packet header (TOC), and do not contain any audio data.)
         Packets with a length larger than 2 bytes should be sent as usual.

         The receiver should use normal packet loss concealment to handle missing packets, in the same manner as it would handle packet loss.
         In particular it can call opus_decode() with data = NULL, len = 0, and frame_size equal to the size of the missing frame(s),
         and the decoder will generate audio data to conceal the missing frame(s).
         */
} else {
        //r contains size of encoded data
}

Can I do the same with JS? and how ;) ?
Sorry I`m newbie in JS

Thank you!

[chris-rudmin]

Should totally be possible. We would need to create a patch to expose that option.

…

On Mon, May 11, 2020 at 12:08 PM Chapay ***@***.***> wrote: Hey In c/c++ i can turn on DTX by code below opus_encoder_ctl(enc, OPUS_SET_DTX(enable ? 1 : 0)); and can skip data without voice int32_t r = opus_encode(enc, data, static_cast<int>(len), buffer, 4096);if ( r<=0 ) { //some error } else if( r<=2 ) { //https://stackoverflow.com/questions/39718307/how-to-use-opus-dtx-from-opensource-opus-demo-binary /* When using Opus over a network, using a protocol such as RTP where the packets are timestamped, DTX may be enabled if you want to reduce the packets sent during periods where there is no voice activity. A packet would still be sent about every 400 ms, updating background noise. Using the packet timestamps the receiver can determine the duration of any gaps and fill them in with the background noise to keep it sounding natural. Enable DTX in the encoder using opus_encoder_ctl(enc, OPUS_SET_DTX(1)); , or with the -dtx option on opus_demo. Then, simply do not send any packets produced by the encoder with a length of 2 bytes or less. (These "DTX packets" are just zero-length frames, with a normal 1- or 2-byte packet header (TOC), and do not contain any audio data.) Packets with a length larger than 2 bytes should be sent as usual. The receiver should use normal packet loss concealment to handle missing packets, in the same manner as it would handle packet loss. In particular it can call opus_decode() with data = NULL, len = 0, and frame_size equal to the size of the missing frame(s), and the decoder will generate audio data to conceal the missing frame(s). */ } else { //r contains size of encoded data } Can I do the same with JS? and how ;) ? Sorry I`m newbie in JS Thank you! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#204>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAD3XA2YIJ2VLKWPKA5D6S3RRAPG7ANCNFSM4M6BJRPQ> .

[chapayGhub]

Should totally be possible. We would need to create a patch to expose that option.
…
On Mon, May 11, 2020 at 12:08 PM Chapay @.**> wrote: Hey In c/c++ i can turn on DTX by code below opus_encoder_ctl(enc, OPUS_SET_DTX(enable ? 1 : 0)); and can skip data without voice int32_t r = opus_encode(enc, data, static_cast(len), buffer, 4096);if ( r<=0 ) { //some error } else if( r<=2 ) { //https://stackoverflow.com/questions/39718307/how-to-use-opus-dtx-from-opensource-opus-demo-binary / When using Opus over a network, using a protocol such as RTP where the packets are timestamped, DTX may be enabled if you want to reduce the packets sent during periods where there is no voice activity. A packet would still be sent about every 400 ms, updating background noise. Using the packet timestamps the receiver can determine the duration of any gaps and fill them in with the background noise to keep it sounding natural. Enable DTX in the encoder using opus_encoder_ctl(enc, OPUS_SET_DTX(1)); , or with the -dtx option on opus_demo. Then, simply do not send any packets produced by the encoder with a length of 2 bytes or less. (These "DTX packets" are just zero-length frames, with a normal 1- or 2-byte packet header (TOC), and do not contain any audio data.) Packets with a length larger than 2 bytes should be sent as usual. The receiver should use normal packet loss concealment to handle missing packets, in the same manner as it would handle packet loss. In particular it can call opus_decode() with data = NULL, len = 0, and frame_size equal to the size of the missing frame(s), and the decoder will generate audio data to conceal the missing frame(s). */ } else { //r contains size of encoded data } Can I do the same with JS? and how ;) ? Sorry I`m newbie in JS Thank you! — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#204>, or unsubscribe https://github.com/notifications/unsubscribe-auth/AAD3XA2YIJ2VLKWPKA5D6S3RRAPG7ANCNFSM4M6BJRPQ .

Great news! )))
Maybe you now when you can release new version with this option?

Thank you!

[chris-rudmin]

@chapayGhub Feel free to make a pull request to add this feature. If you need some pointers I will try to make some time to help you out.

[MrdUkk]

is this not possible to call already via exposed setOpusControl() function ?