getplaylist fails with iTunes v9 Options

[jdh]

Hi,

I'm using AMIP SDK v1.4, but am unable to get a playlist when using iTunes v9. Even the supplied getplaylist example fails in:

int code = ac_get_pl();
LeaveCriticalSection(&cs_list);
if (code != AC_ERR_NOERROR) {
printf("Failed to get playlist: %d\n", code);

It reports: Failed to get playlist: 3

When using WinAmp or foobar2000 then getplaylist works just fine!

Just wondering if I'm doing something wrong or if it simply does not work with iTunes v9.

Thanks, Jdh

[Serge]

Does it work on small playlists?

[jdh]

Does it work on small playlists?

Yes, smaller playlists do work! So I did some testing:

• A playlist of 114 songs works - both using the 5000 or 1800000 timeout value.
• A playlist of 115 songs fails - both using the 5000 and 1800000 timeout value!

Btw: Tried this using iTunes and foobar2000, same results for both.

Also, I would have expected that if this is a timeout issue that with the increase of the timeout the getplaylist program would wait longer before returning the error 3. However I see no noticable wait delay when using a 1800000 second timeout and using 3700+ songs or when using only 115 songs and a 5000 timeout.

Thanks for taking the time and responding Serge!

[Serge]

Yes, smaller playlists do work! So I did some testing:

• A playlist of 114 songs works - both using the 5000 or 1800000 timeout value.
• A playlist of 115 songs fails - both using the 5000 and 1800000 timeout value!

Btw: Tried this using iTunes and foobar2000, same results for both.

Also, I would have expected that if this is a timeout issue that with the increase of the timeout the getplaylist program would wait longer before returning the error 3. However I see no noticable wait delay when using a 1800000 second timeout and using 3700+ songs or when using only 115 songs and a 5000 timeout.

Thanks for taking the time and responding Serge!

I guess you are setting timeouts in the wrong place, you should set the bigger timeout in the following function:

CODE

  // Adds listener to AMIP, AMIP will notify host:port about the events specified by flags
  // until listener is removed or fail_count limit is reached. If notification fails
  // fail_count times, AMIP automatically removes listener for the specified host:port.
  // AMIP keeps listeners even between restarts (in plugin.ini file)
  int WINAPI ac_add_event_listener(const char *host, int port, int timeout, UINT flags, UINT fail_count=1);

[jdh]

I guess you are setting timeouts in the wrong place, you should set the bigger timeout in the following function:
.....

Tried the following:

getplaylist.cpp:

CODE

  // Init client
  if (!ac_init_client(AMIP_HOST, AMIP_PORT, 5000, 5, 1)) {
    printf("Client cannot be initialized\n");
    exit(1);
  }

  // Add event listener to be notified on playlist change and ready events
  if (AC_ERR_NOERROR
      != ac_add_event_listener(SERVER_HOST, SERVER_PORT, 1800000, AC_EVT_PLCHANGE | AC_EVT_PLREADY)) {
    printf("Failed to add listener, check that AMIP is running and Remote/API Server is enabled on specified port\n");
    ac_uninit();
    exit(1);
  }

Using foobar2000 and 115 songs in the playlist, below is the output when running getplaylist:

CODE

$ make clean
rm -f *.o *.exe ./Release/*.*
rmdir Release
$ make prepare
mkdir -p Release
cp ../Release/ac.lib ac.lib
cp ../Release/ac.dll ./Release/ac.dll
tools/reimp.exe ac.lib
rm -f ac.lib ac.def
mv libac.a ./Release/libac.a
$ make getplaylist
g++ -I"../" -mno-cygwin -fpermissive -fexpensive-optimizations -O3 -Os -fno-exce
ptions -Wno-error -w   -c -o getplaylist.o getplaylist.cpp
g++.exe -I"../" -mno-cygwin -fpermissive -fexpensive-optimizations -O3 -Os -fno-
exceptions -Wno-error -w -L./Release -s -Wl -mno-cygwin getplaylist.o -lac -o ./
Release/getplaylist.exe
$ cd release
$ date;time getplaylist;date
Tue Mar 23 11:36:11 EDT 2010
Playlist cache is already in sync!
Failed to get playlist: 3

real    0m0.516s
user    0m0.015s
sys     0m0.015s
Tue Mar 23 11:36:11 EDT 2010
$

As you can see getplaylist did not wait for the timeout value. I have no idea what else to try.

Thanks, Jdh