A NOTE has been added to this issue. ====================================================================== <https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2287> ====================================================================== Reported By: cruiseoveride Assigned To: ====================================================================== Project: ALSA - lib Issue ID: 2287 Category: 0_general Reproducibility: always Severity: crash Priority: normal Status: new ====================================================================== Date Submitted: 07-16-2006 18:03 CEST Last Modified: 07-17-2006 17:56 CEST ====================================================================== Summary: Segfaults all functions after snd_pcm_hw_params_get_buffer_size (params,(snd_pcm_uframes_t *) & val); Description: I am new to Alsa and am not happy at all at the state of documentation available. You guys seriously need to do something about this. I have an M-Audio Audiophile Delta 192 (ICE1724) and I want to port envy24control for this chip, However I first need to familiar myself with the ALSA API. So I began by looking for simple examples on how to use ALSA API and came accross the followinf prog (Attached file test.c). The program compiles cleanly with gcc-4.1 and runs, however after it prints out the ..."buffer size = 8192 frames" It segfaults. If you slash out line 104, it resolves the issue. My question is, Is there a bug in this function? Code was obtained from http://www.linuxjournal.com/article/6735 ====================================================================== ---------------------------------------------------------------------- Raymond - 07-17-06 17:34 ---------------------------------------------------------------------- I don't have any ice17xx card iec958 playback control is well defined but iec958 capture control is not ... alsa-lib/include/asoundef.h Refer to ice1724.c, 'Multi Track Peak' is a kcontrol with 22 values (min=0 and max=255) as same as ice1712.c in alsa-driver-1.0.12rc1 alsactl store test.state The difficult part is to know the difference between different sound cards using ice1724. ---------------------------------------------------------------------- cruiseoveride - 07-17-06 17:56 ---------------------------------------------------------------------- ok cool. the level meters function looks like this on the envy24control (levelmeters.c) void level_meters_init(void) { snd_ctl_elem_value_malloc(&peaks); snd_ctl_elem_value_set_interface(peaks, SND_CTL_ELEM_IFACE_MIXER); snd_ctl_elem_value_set_name(peaks, "Multi Track Peak"); } and the get levels looks like this static void get_levels(int idx, int *l1, int *l2) { *l1 = *l2 = 0; if (idx == 0) { *l1 = snd_ctl_elem_value_get_integer(peaks, 20); *l2 = snd_ctl_elem_value_get_integer(peaks, 21); } else { *l1 = *l2 = snd_ctl_elem_value_get_integer(peaks, idx - 1); } } the 20, and 21 are indexes ? are they the same as numids that amixer ouputs if so than these refer to numid=20,iface=MIXER,name='DAC Volume' numid=21,iface=MIXER,name='DAC Volume',index=1 [from:ice1712] how do u seperate the multi track peak, or do i have to parse it. [vikky@server ~]$ amixer -c 2 cget numid=5 numid=5,iface=MIXER,name='Multi Track Peak' ; type=INTEGER,access=r----,values=22,min=0,max=255,step=0 : values=0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 [from:ice1724] Issue History Date Modified Username Field Change ====================================================================== 07-16-06 18:03 cruiseoveride New Issue 07-16-06 18:03 cruiseoveride File Added: test.c 07-16-06 20:38 cruiseoveride Issue Monitored: cruiseoveride 07-17-06 02:44 Raymond Note Added: 0011032 07-17-06 02:47 Raymond Note Edited: 0011032 07-17-06 03:18 Raymond Note Edited: 0011032 07-17-06 05:45 cruiseoveride Note Added: 0011033 07-17-06 05:46 cruiseoveride Note Edited: 0011033 07-17-06 07:31 Raymond Note Added: 0011035 07-17-06 08:23 Raymond Note Added: 0011036 07-17-06 08:26 Raymond Note Edited: 0011036 07-17-06 14:48 cruiseoveride Note Added: 0011039 07-17-06 14:59 cruiseoveride Note Added: 0011040 07-17-06 16:07 Raymond Note Added: 0011042 07-17-06 16:31 Raymond Note Edited: 0011042 07-17-06 16:40 cruiseoveride Note Added: 0011044 07-17-06 17:13 cruiseoveride Note Added: 0011045 07-17-06 17:34 Raymond Note Added: 0011046 07-17-06 17:56 cruiseoveride Note Added: 0011047 ====================================================================== ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
