[alsa-devel] ALSA lib troubles with xine
Hi,
I've got problems using ALSA (hg) and xine-lib (1.1.7). I'm trying to use fbxine for playback but ALSA debug logging gives me:
,---- | audio_alsa_out: Audio Device name = default | audio_alsa_out: Number of channels = 2 | Buffer size range from 4096 to 0 <- !!! | Period size range from 0 to 0 <- !!! | Buffer time size 44100 | To choose buffer_size = 4096 | To choose period_size = 512 | was set period_size = 0 | was set buffer_size = 4096 | audio_alsa_out:open pause_resume=1 | ACCESS: RW_INTERLEAVED | FORMAT: S16_LE | SUBFORMAT: STD | SAMPLE_BITS: 16 | FRAME_BITS: 32 | CHANNELS: 2 | RATE: 44100 | PERIOD_TIME: (46439 46440) | PERIOD_SIZE: 2048 | PERIOD_BYTES: 8192 | PERIODS: 2 | BUFFER_TIME: (92879 92880) | BUFFER_SIZE: 4096 | BUFFER_BYTES: 16384 | TICK_TIME: 10000 | audio_alsa_out: Unable to set swparams: Invalid argument `----
So buffer and period sizes seem to be wrong and therefore I get no sound. (audio_alsa_out logging from [1].) Next I've tried to run speaker-test and the ouptut look good:
,---- | [root@(none) ~]# speaker-test | | speaker-test 1.0.15rc1 | | Playback device is default | Stream parameters are 48000Hz, S16_LE, 1 channels | Using 16 octaves of pink noise | Rate set to 48000Hz (requested 48000Hz) | Buffer size range from 4096 to 4096 | Period size range from 2048 to 2048 | Using max buffer size 4096 | Periods = 4 | was set period_size = 2048 | was set buffer_size = 4096 | 0 - Front Left `----
Both applications are linked against the same ALSA library (dynamic or static linkage doesn't make a difference - speaker-test always works and xine always fails). And both applications use the same instructions (snd_pcm_hw_params_get_period_size_min/max()) AFAICS.
Any ideas what I could try next? Thanks.
Toolchain: buildroot based arm gcc 4.2.1 with uclibc 0.9.29. However, other applications (mplayer, aplay, alsaplayer) work as well, so I guess it's not toolchain related.
[1] http://xine.cvs.sourceforge.net/xine/xine-lib/src/audio_out/audio_alsa_out.c
Regards, Markus Korber
Markus Korber wrote:
I've got problems using ALSA (hg) and xine-lib (1.1.7). I'm trying to use fbxine for playback but ALSA debug logging gives me:
| Period size range from 0 to 0 <- !!! | To choose period_size = 512 | was set period_size = 0 | PERIOD_SIZE: 2048
A period size was set, but xine's code that tries to read the period size apparently doesn't work.
Please check the return values of the *_get_period_size* calls.
Toolchain: buildroot based arm gcc 4.2.1 with uclibc 0.9.29.
Is it possible that xine-lib and alsa-lib were compiled with different compiler options, resulting in a different size of snd_pcm_uframes_t?
Regards, Clemens
Thus spake Clemens Ladisch:
Markus Korber wrote:
I've got problems using ALSA (hg) and xine-lib (1.1.7). I'm trying to use fbxine for playback but ALSA debug logging gives me:
| Period size range from 0 to 0 <- !!! | To choose period_size = 512 | was set period_size = 0 | PERIOD_SIZE: 2048
A period size was set, but xine's code that tries to read the period size apparently doesn't work.
Please check the return values of the *_get_period_size* calls.
All calls succeeded.
Regards, Markus Korber
Thus spake Markus Korber:
I've got problems using ALSA (hg) and xine-lib (1.1.7). I'm trying to use fbxine for playback but ALSA debug logging gives me: [...] So buffer and period sizes seem to be wrong and therefore I get no sound. (audio_alsa_out logging from [1].) Next I've tried to run speaker-test and the ouptut look good:
Sorry for the wrong information (Must have taken an older version of libasound). I've recompiled alsa-lib 1.0.15rc1 and alsa-utils 1.0.15rc1 and now speaker-test also fails:
,---- | [root@(none) ~]# speaker-test | | speaker-test 1.0.15rc1 | | Playback device is default | Stream parameters are 48000Hz, S16_LE, 1 channels | Using 16 octaves of pink noise | Rate set to 48000Hz (requested 48000Hz) | Buffer size range from 4096 to 1073748296 | Period size range from 0 to 0 | Using max buffer size 1073748296 | Periods = 4 | was set period_size = 0 | was set buffer_size = 4096 | Unable to set sw params for playback: Invalid argument | Setting of swparams failed: Invalid argument `----
Next I'll try to compile alsa-lib with '-O1' instead of '-Os' and then I'll revert back to 1.0.14a and give that version a try.
lg, Markus Korber
On Mon, 3 Sep 2007, Markus Korber wrote:
Thus spake Markus Korber:
I've got problems using ALSA (hg) and xine-lib (1.1.7). I'm trying to use fbxine for playback but ALSA debug logging gives me: [...] So buffer and period sizes seem to be wrong and therefore I get no sound. (audio_alsa_out logging from [1].) Next I've tried to run speaker-test and the ouptut look good:
Sorry for the wrong information (Must have taken an older version of libasound). I've recompiled alsa-lib 1.0.15rc1 and alsa-utils 1.0.15rc1 and now speaker-test also fails:
Try compile alsa-lib with '--with-versioned=no' and recompile (relink) speaker-test and other apps against this library.
Jaroslav
----- Jaroslav Kysela perex@suse.cz Linux Kernel Sound Maintainer ALSA Project, SUSE Labs
Thus spake Jaroslav Kysela:
On Mon, 3 Sep 2007, Markus Korber wrote:
Thus spake Markus Korber:
I've got problems using ALSA (hg) and xine-lib (1.1.7). I'm trying to use fbxine for playback but ALSA debug logging gives me: [...] So buffer and period sizes seem to be wrong and therefore I get no sound. (audio_alsa_out logging from [1].) Next I've tried to run speaker-test and the ouptut look good:
Sorry for the wrong information (Must have taken an older version of libasound). I've recompiled alsa-lib 1.0.15rc1 and alsa-utils 1.0.15rc1 and now speaker-test also fails:
Try compile alsa-lib with '--with-versioned=no' and recompile (relink) speaker-test and other apps against this library.
Ok, speaker-test works again:
,---- | [root@(none) ~]# speaker-test | | speaker-test 1.0.15rc1 | | Playback device is default | Stream parameters are 48000Hz, S16_LE, 1 channels | Using 16 octaves of pink noise | Rate set to 48000Hz (requested 48000Hz) | Buffer size range from 4096 to 4096 | Period size range from 2048 to 2048 | Using max buffer size 4096 | Periods = 4 | was set period_size = 2048 | was set buffer_size = 4096 | 0 - Front Left `----
And also fbxine now (kind of) works:
,---- | audio_alsa_out: Audio Device name = default | audio_alsa_out: Number of channels = 2 | Buffer size range from 4096 to 4096 | Period size range from 2048 to 2048 | Buffer time size 44100 | To choose buffer_size = 4096 | To choose period_size = 512 | was set period_size = 2048 | was set buffer_size = 4096 | ACCESS: RW_INTERLEAVED | FORMAT: S16_LE | SUBFORMAT: STD | SAMPLE_BITS: 16 | FRAME_BITS: 32 | CHANNELS: 2 | RATE: 44100 | PERIOD_TIME: (46439 46440) | PERIOD_SIZE: 2048 | PERIOD_BYTES: 8192 | PERIODS: 2 | BUFFER_TIME: (92879 92880) | BUFFER_SIZE: 4096 | BUFFER_BYTES: 16384 | TICK_TIME: 10000 | stream : PLAYBACK | access : RW_INTERLEAVED | format : S16_LE | subformat : STD | channels : 2 | rate : 44100 | exact rate : 44100 (44100/1) | msbits : 16 | buffer_size : 4096 | period_size : 2048 | period_time : 46439 | tick_time : 10000 | tstamp_mode : NONE | period_step : 1 | sleep_min : 0 | avail_min : 2048 | xfer_align : 1 | start_threshold : 2048 | stop_threshold : 4096 | silence_threshold: 0 | silence_size : 0 | boundary : 1073741824 | start_mode: DATA | xrun_mode: STOP | tstamp_mode: NONE | period_step: 1 | sleep_min: 0 | avail_min: 2048 | xfer_align: 1 | silence_threshold: 0 | silence_size: 0 | boundary: 1073741824 | output sample rate 44100 | xine_play `----
However, the sound is stuttering a lot (I guess this is a xine-lib issue).
Nevertheless thanks Jaroslav and Clemens for your help!
Regards, Markus Korber
At Mon, 03 Sep 2007 11:24:02 +0200, Markus Korber wrote:
However, the sound is stuttering a lot (I guess this is a xine-lib issue).
Can you install older versions of ALSA-lib *manually* and check in which version the bug doesn't appear? Then we can pin-point the change.
thanks,
Takashi
Thus spake Takashi Iwai:
At Mon, 03 Sep 2007 11:24:02 +0200, Markus Korber wrote:
However, the sound is stuttering a lot (I guess this is a xine-lib issue).
Can you install older versions of ALSA-lib *manually* and check in which version the bug doesn't appear? Then we can pin-point the change.
Ok, so I compiled alsa-lib, installed libasound.so, and recompiled the xine alsa output module against the appropriate alsa-lib:
1.0.13 : failed 1.0.14a : failed 1.0.15rc1 : failed
Any ideas?
Perhaps xine-lib doesn't work well if buffer_size = 2*period_size?
Regards, Markus Korber
At Mon, 03 Sep 2007 16:52:03 +0200, Markus Korber wrote:
Thus spake Takashi Iwai:
At Mon, 03 Sep 2007 11:24:02 +0200, Markus Korber wrote:
However, the sound is stuttering a lot (I guess this is a xine-lib issue).
Can you install older versions of ALSA-lib *manually* and check in which version the bug doesn't appear? Then we can pin-point the change.
Ok, so I compiled alsa-lib, installed libasound.so, and recompiled the xine alsa output module against the appropriate alsa-lib:
1.0.13 : failed 1.0.14a : failed 1.0.15rc1 : failed
Any ideas?
Perhaps xine-lib doesn't work well if buffer_size = 2*period_size?
It depends on the setting. Did it ever work with any version?
Takashi
Takashi Iwai wrote:
At Mon, 03 Sep 2007 16:52:03 +0200, Markus Korber wrote:
Thus spake Takashi Iwai:
At Mon, 03 Sep 2007 11:24:02 +0200, Markus Korber wrote:
However, the sound is stuttering a lot (I guess this is a xine-lib issue).
Can you install older versions of ALSA-lib *manually* and check in which version the bug doesn't appear? Then we can pin-point the change.
Ok, so I compiled alsa-lib, installed libasound.so, and recompiled the xine alsa output module against the appropriate alsa-lib:
1.0.13 : failed 1.0.14a : failed 1.0.15rc1 : failed
Any ideas?
Perhaps xine-lib doesn't work well if buffer_size = 2*period_size?
It depends on the setting. Did it ever work with any version?
No. However, other applications work perfectly (mplayer, alsaplayer, aplay).
Regards, Markus Korber
participants (4)
-
Clemens Ladisch -
Jaroslav Kysela -
Markus Korber -
Takashi Iwai