Dear ALSA users
I want to do some pitch shifting in real time, I am
using DELTA 44 card. I have installed the ALSA driver
and card is working fine. I wrote a program to Read
from and write to the card using free OSS API, it
works fine, but when I tried to play around with the
data buffer, I started getting wierd background noise
with the actual signal. I thought that may be because
of crapy OSS API, so now I have shifted to ALSA API,
and I thought a good point to start will be to test
latency.c provided by alsa, but when after changing
desired sampling rate, channel nos., data type and
compiling it I get following error:-
gcc -static -Wall -pipe -g test_latency1.c -o
test_latency1
test_latency1.c:444:16: warning: multi-line string
literals are deprecated
test_latency1.c:468:16: warning: multi-line string
literals are deprecated
/tmp/ccXqsvD3.o: In function `setparams_stream':
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:65:
undefined reference to `snd_pcm_hw_params_any'
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:67:
undefined reference to `snd_strerror'
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:70:
undefined reference to `snd_pcm_hw_params_set_access'
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:72:
undefined reference to `snd_strerror'
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:75:
undefined reference to `snd_pcm_hw_params_set_format'
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:77:
undefined reference to `snd_strerror'
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:80:
undefined reference to
`snd_pcm_hw_params_set_channels'
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:82:
undefined reference to `snd_strerror'
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:86:
undefined reference to
snd_pcm_hw_params_set_rate_near'
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:88:
undefined reference to `snd_strerror'
/tmp/ccXqsvD3.o: In function `setparams_bufsize':
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:107:
undefined reference to `snd_pcm_hw_params_copy'
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:109:
undefined reference to
snd_pcm_hw_params_set_buffer_size_near'
/usr/src/alsa/alsa-lib-0.9.2/test/test_latency1.c:111:
undefined reference to `snd_strerror'
And the list goes on and on.
In the end I get this error:-
collect2: ld returned 1 exit status
make: *** [test_latency1] Error 1
Can anyone tell me what should I do to fix this, I am
new to ALSA, any help from you guys will be highly
appreciated.
Thanks in advance
=====
Yours Truly
Vineet Agrawal
Staff Research Associate III
University of San Francisco (UCSF)
Ph: 415 5024456 (office)
864 6504260 (mobile)
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