[Alsa-user] On the fly conversion from DTS to AC3 5.1 audio

2008-03-14 Thread Rob Beard
Hi folks, I'm not sure if I'm in the right place asking this but I thought I'd try anyway I'm having some problems with mplayer when I try to play 720p HDvideo files with 1.5Mbit DTS soundtracks via SPDIF to my surround sound receiver. AC3 audio is working fine (even up to about 1.5Mbit/s

Re: [Alsa-user] Is ALSA the right tool for my app?

2008-03-14 Thread John Sigler
Allan wrote: > Following from Sean, the appropriate system to use would be netjack. > http://netjack.sourceforge.net/ I will look into it. Thanks for the pointer. I don't think I can use it as is, because I have written all sorts of code to handle retransmission, forward error correction, and s

Re: [Alsa-user] Is ALSA the right tool for my app?

2008-03-14 Thread John Sigler
Clemens Ladisch wrote: > John Sigler wrote: > >> To keep the level constant, it might need to add or remove a few >> frames once in a while. > > This won't work with Dolby data (except by dropping or adding a > complete Dolby frame). > > Using a compressed format requires that the decoder is co

Re: [Alsa-user] C-media on board audio

2008-03-14 Thread Clemens Ladisch
Sergei Steshenko wrote: > On the one hand, the original poster mentions onboard audio, on the other > it looks like a USB audio device is present. > > Is this - two different soundcards - onboard + USB the case and should it > be the case ? > > Or 6 channel onboard audio is USB ? It's 8 channels,

Re: [Alsa-user] C-media on board audio

2008-03-14 Thread Sergei Steshenko
On Fri, 14 Mar 2008 09:31:27 +0100 Clemens Ladisch <[EMAIL PROTECTED]> wrote: > Bob van der Poel wrote: > > But, I can't get a alsamixer to work: > > > > bob$ alsamixer > > No mixer elems found > > alsamixer works; it just tells you that this device apparently has no > mixer controls. >

Re: [Alsa-user] C-media on board audio

2008-03-14 Thread Clemens Ladisch
Bob van der Poel wrote: > But, I can't get a alsamixer to work: > > bob$ alsamixer > No mixer elems found alsamixer works; it just tells you that this device apparently has no mixer controls. Please show the output of "lsusb -v" for this device. > bob$ aplay mix.wav > aplay: main:550

Re: [Alsa-user] Is ALSA the right tool for my app?

2008-03-14 Thread Clemens Ladisch
John Sigler wrote: > To keep the level constant, it might need to add or remove a few > frames once in a while. This won't work with Dolby data (except by dropping or adding a complete Dolby frame). Using a compressed format requires that the decoder is completely synchronized to the source. Re

Re: [Alsa-user] S32_LE format

2008-03-14 Thread Clemens Ladisch
John Sigler wrote: >format : S32_LE >msbits : 24 > ... > The first sample is stored as 00 00 a5 f5. > Does this represent the value 0xf5a5? Yes. > For the majority of samples, the first two bytes are 00 00. > Is this because the input stream was, in fact, a 16-bit stream?

Re: [Alsa-user] Is ALSA the right tool for my app?

2008-03-14 Thread [EMAIL PROTECTED]
Hi John Following from Sean, the appropriate system to use would be netjack. http://netjack.sourceforge.net/ I know Geoff Beasley showed me his design for a studio here in Melbourne that utilises it, (however I've been slack and 2 years later still haven't visited) One thing that would be imp