Tnx Robin

ffmpeg also works excellent as decoer.

With ffmpeg -i /some/file -f u16le -ar 44100 | myprog ...

i gotta horrable sound. Probably U mean -f s16le !

So, i have rewrited my olde 2-fork mpg123 mixer as 1-fork ffmpeg "frontend"

http://martini.pudele.com/radio/programming/audio/ffmpegdec02.c

fundamentally without any changes, except

#define PLAYER_BIN "/usr/bin/ffmpeg"

execlp(PLAYER_BIN,PLAYER_BIN, "-i", mxk.trknamep, "-f", "s16le", "-ar","44100", "-v","0" ,"-", NULL);

Any loud output messages i drain out simple with close(2); after fork();

So far everything is OK, if i decode whole files.

It seems that ffmpeg during da decoding set terminal in canonical mode.

If i decode only part of file, and kill() em @ middle of decoding,

ffmpeg does not restore normal terminal mode , and i do not see commands which i type.

Then helps (blind typed) command "reset".

I tried send several signals with kill() SIGKILL 2 SIGTSTP SIGQUIT SIGINT 15 ...,

but none of em has handler for terminal restore.

I fixed this behavior with

#include <termios.h>

struct termios tsave; /* ! ! ! F-king ffmpeg ! ! ! */

/* sets canonical input mode */

/*----*/void save_terminal(void)

/*----*/{ struct termios tbuf;

/*----*/ tcgetattr(0,&tbuf);

/*----*/ tsave=tbuf;

/*----*/}

/* restore the settings */

/*----*/void restore_terminal(void)

/*----*/{ tcsetattr(0,TCSANOW,&tsave); }

I have tried close(0); where 0=stdin , after fork(); but program has frozen.

How do i decouple childs stdin from terminal or redirect em from /dev/null ?

Tnx in advance @ all

That's probably why mplayer devs recommend using mkfifo (named pipe)
instead of stdout.. 'mencoder' can do it.

If you need to support a variety of unknown formats and codecs: ffmpeg
is an alternative and gstreamer might be one.

ffmpeg -i /some/file -f u16le -acodec pcm_s16le -ar 44100 - \
| jack-stdin system:playback_1 system:playback_2

on that note, `jack-stdout` can capture and pipe raw PCM data from any
JACK-application including `mplayer -ao jack /some/file`. YMMV.

HTH,
robin

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