Hello again,
I solved one of my problems. sound from xine is fine now, even using
upmix. I found this little patch on the xine mailing list (for
xine-lib-1.1.7), but I had to apply it manually (this here is a fixed
version, which applies fine), but the dmix--->a52 problem is still there.
diff -Naur xine-lib-1.1.7/src/audio_out/audio_alsa_out.c
xine-lib-1.1.7-patched/src/audio_out/audio_alsa_out.c
--- xine-lib-1.1.7/src/audio_out/audio_alsa_out.c 2007-06-04
23:37:38.000000000 +0200
+++ xine-lib-1.1.7-patched/src/audio_out/audio_alsa_out.c
2007-09-02 14:13:50.000000000 +0200
@@ -307,7 +307,8 @@
/* int open_mode=0; BLOCK */
struct timeval start_time;
struct timeval end_time;
-
+ int resample;
+
snd_pcm_hw_params_alloca(¶ms);
snd_pcm_sw_params_alloca(&swparams);
err = snd_output_stdio_attach(&jcd_out, stdout, 0);
@@ -460,8 +461,8 @@
goto close;
}
#if SND_LIB_VERSION >= 0x010009
- /* Restrict a configuration space to contain only real hardware rates */
- err = snd_pcm_hw_params_set_rate_resample(this->audio_fd, params, 0);
+ resample = config->lookup_entry(config,
"audio.device.resample_alsa")->num_value;
+ err = snd_pcm_hw_params_set_rate_resample(this->audio_fd, params,
resample);
#endif
/* set the stream rate [Hz] */
dir=0;
@@ -1369,6 +1370,13 @@
"will increase performance."),
10, NULL,
NULL);
+ pcm_device = config->register_bool (config,
+ "audio.device.resample_alsa",
+ 1,
+ _("allow to use alsa internal
resampler"),
+ _("Try to enable this if you hear
clicks in sound playback"),
+ 10, NULL,
+ NULL);
pcm_device = config->register_string(config,
"audio.device.alsa_default_device",
"default",
Best Regards,
Michael
Michael KAufmann schrieb:
> Hello,
>
> the only way for me to get surround sound from my Mac Mini is to use its
> spdif interface and an external ac3 decoder, but this leads to various
> problems (e.g. no volume control from my pc anymore). My idea was the
> following:
>
> application--->dmix--->upmix--->softvol--->a52--->external a52 decoder
>
> Till know I have this setup working:
>
> application--->softvol--->upmix--->a52--->external decoder
>
> But there are two problems with this setup:
> 0. without dmix I cannot share the sound card which is a big problem!
> 1. dmix refuses to work with the a52 plugin as its slave
> 2. all xine-lib based apps have problems with the upmix plugin (I don't
> know how to explain - it sound's like a tinkling and stuttering).
> Playing medias with "native" ac3 sound is also fine with xine (e.g.
> DVDs, Dolby or THX trailers, but not AC3 from digital tv/vdr). Sound
> from mplayer is fine all the time.
>
> Is there any way to make dmix work with a52 as slave?
>
> Here's my asound.conf
>
> pcm.swac3 {
> type softvol
> slave {
> pcm "upmix51" #redirect the output to dmix (instead of
> "hw:0,0")
> }
> control {
> name "PCM" #override the PCM slider to set the softvol
> volume level globally
> card 0
> }
> }
>
> pcm.upmix51 {
> type upmix
> channels 6
> slave {
> pcm "ac3plug"
> }
> }
>
> pcm.dmixer { # THIS DOES NOT WORK!!!
> type dmix
> ipc_key 12345
> slave {
> pcm "swac3"
> rate 48000
> format S16_LE
> channels 6
> period_time 0
> period_size 1024
> buffer_size 8192
> }
> }
>
> pcm.ac3plug {
> type a52
> channels 6
> rate 48000
> }
>
> pcm.!surround51 { # NOT REALLY USED
> type plug
> slave.pcm "swac3"
> }
>
>
> Best Regards,
> Michael
>
> -------------------------------------------------------------------------
> This SF.net email is sponsored by: Splunk Inc.
> Still grepping through log files to find problems? Stop.
> Now Search log events and configuration files using AJAX and a browser.
> Download your FREE copy of Splunk now >> http://get.splunk.com/
> _______________________________________________
> Alsa-user mailing list
> Alsa-user@xxxxxxxxxxxxxxxxxxxxx
> https://lists.sourceforge.net/lists/listinfo/alsa-user
>
-------------------------------------------------------------------------
This SF.net email is sponsored by: Splunk Inc.
Still grepping through log files to find problems? Stop.
Now Search log events and configuration files using AJAX and a browser.
Download your FREE copy of Splunk now >> http://get.splunk.com/
_______________________________________________
Alsa-user mailing list
Alsa-user@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/alsa-user
