On Wed, 14 Nov 2018 17:05:49 +0100, Takashi Sakamoto wrote:
Hi,
On Tue, 13 Nov 2018, Takashi Iwai wrote:
On Tue, 13 Nov 2018 07:41:13 +0100, Takashi Sakamoto wrote:
This commit adds a new command, 'axfer' ('ALSA transfer'), to transfer data frames described in asound.h. This command is intended to replace current aplay. The most of features and command line parameters come from aplay as much as possible, while it has more better feature and code to maintain.
This commit adds an entry point for this command. Current option system of aplay is still available, while this command has a sub-command system like commands in iproute2.
Currently, two sub-commands are supported; 'list' and 'transfer'. The 'list' sub-command has the same effect as '-l' and '-L' options of aplay. The 'transfer' sub-command has the same effect as the main feature of aplay. For the sub-command system, an option for stream direction is required; '-P' for playback and '-C' for capture. If you create symbolic links to this binary for aplay/arecord, please execute: $ ln -s axfer aplay $ ln -s axfer arecord
Actual code for each sub-command will be implemented in later commits.
Signed-off-by: Takashi Sakamoto o-takashi@sakamocchi.jp
Although all patches have been merged, below are a few suggestions:
- Please make help working. It took some time for me until figuring
out the fact that the direction option is mandatory, for example.
- The input/output from/to a terminal can be checked via isatty().
That allows us to see garbages by a mistakenly started command.
If my understanding is correct, usage of 'isatty(3)' can return error in a case that users just run 'axfer transfer -P (-)'.
Right.
In current implementation, axfer continues to call of 'read(2)' and receive '-EAGAIN' till receiving teminate signals.
The playback isn't too bad (although I don't see any useful scenario, either). The worse is the capture that prints junk texts that sometimes mandates the terminal reset.
- A man page. (I thought Debian mandates it?)
I have a plan to write help/man in this development period, within this year.
Not only children cheer for a Christmas gift, yeah :)
thanks,
Takashi
In anyway, thanks for your hard work!
Yep. I'm a bit exhausted from this tough work, and need refresh time. Anyway, thank you for applying this PR.
Regards
Takashi Sakamoto