[alsa-devel] [PATCH 05/39] firewire-lib: Add support for AMDTP in-stream and PCM capture

[Takashi Sakamoto]

(Mar 10 2014 05:37), Clemens Ladisch wrote:
> In practice, this error means that a packet was dropped.  I guess this
> doesn't actually happen too often, but eventually, we should handle
> this either by inserting some samples or by stopping the stream.

For inserting some samples, I realize that there are some difficulties:
  - In non-blocking mode, assuming the number of PCM samples in dropped 
packets is difficult because specification just define '0 <= N <= 
SYT_INTERVAL' (N = the number of events in packet). Each device can have 
different sequence of N in packets.
  - In blocking mode, assuming the value of syt in dropped packets is 
difficult because it's related to timing.

So I give up to think about recovering from dropped packets and make 
firewire-lib stops streaming when detecting this state.

But this is not better for BeBoB based devices as I mentioned in 
previous message. So I'll add some flags and codes for BeBoB.


Regards

Takashi Sakamoto
o-takashi at sakamocchi.jp