[alsa-devel] aplay appication failed to open the alsa device
Hi, I am working on a Development Board which has the PXA270 processor and TSC2301 Audio Codec Chip.
The TSC2301 Chip is interfaced with the processor by SPI interface for reading/writing the TSC2301's registers.
The TSC2301 Chip is interfaced with the processor by I2S interface for sending/receiving Audio Data to/from the TSC2301 Audio Codec Chip.
I have downloaded the pxa-uda1380.c alsa driver source for uda1380 audio codec chip and modified it for tsc2301 .
I am using the kernel version 2.6.22 and cross-compiler version arm-linux-gcc 3.4.1.
I have built the kernel image with ALSA audio support and the applications aplay and arecord for playing and recording audio data using ALSA api.
I have got the alsa related entries in the /proc filesystem . But when playing the aplay, it failed to open the device.
[root@SIRIUS /flash2]#./aplay /usr/local/Songs/AjRaj-Anthimanthirai-Theme4.mp3 ALSA lib pcm.c:2144:(snd_pcm_open_noupdate) Unknown PCM default aplay: main:545: audio open error: No such file or directory [root@SIRIUS /flash2]#
/aplay -D /dev/snd/pcmC0D0p /usr/local/Songs/AjRaj-Anthimanthirai-Theme4.mp3 ALSA lib pcm.c:2144:(snd_pcm_open_noupdate) Unknown PCM /dev/snd/pcmC0D0p aplay: main:545: audio open error: No such file or directory
What could be the issue ? Am I missing anyting in the driver for alsa ?
Regards, Tharmarajan G
I tried to send the mp3 file directly to the device by using the cat command. But it failed to play the mp3 file
[root@SIRIUS /tmp]#cat /usr/local/Songs/AjRaj-Anthimanthirai-Theme4.mp3
/dev/snd/pcmC0D0p
playback_open cat: Write Error: File descriptor in bad state hw_free snd_card_pxa_tsc2301_playback_close [root@SIRIUS /tmp]#
On Wed, 2007-10-24 at 10:11 +0530, Tharmarajan G wrote:
Hi, I am working on a Development Board which has the PXA270 processor and TSC2301 Audio Codec Chip.
The TSC2301 Chip is interfaced with the processor by SPI interface for reading/writing the TSC2301's registers.
The TSC2301 Chip is interfaced with the processor by I2S interface for sending/receiving Audio Data to/from the TSC2301 Audio Codec Chip.
I have downloaded the pxa-uda1380.c alsa driver source for uda1380 audio codec chip and modified it for tsc2301 .
I am using the kernel version 2.6.22 and cross-compiler version arm-linux-gcc 3.4.1.
I have built the kernel image with ALSA audio support and the applications aplay and arecord for playing and recording audio data using ALSA api.
I have got the alsa related entries in the /proc filesystem . But when playing the aplay, it failed to open the device.
[root@SIRIUS /flash2]#./aplay /usr/local/Songs/AjRaj-Anthimanthirai-Theme4.mp3 ALSA lib pcm.c:2144:(snd_pcm_open_noupdate) Unknown PCM default aplay: main:545: audio open error: No such file or directory [root@SIRIUS /flash2]#
/aplay -D /dev/snd/pcmC0D0p /usr/local/Songs/AjRaj-Anthimanthirai-Theme4.mp3 ALSA lib pcm.c:2144:(snd_pcm_open_noupdate) Unknown PCM /dev/snd/pcmC0D0p aplay: main:545: audio open error: No such file or directory
What could be the issue ? Am I missing anyting in the driver for alsa ?
Regards, Tharmarajan G
Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
Tharmarajan G wrote:
I have built the kernel image with ALSA audio support and the applications aplay and arecord for playing and recording audio data using ALSA api.
I have got the alsa related entries in the /proc filesystem . But when playing the aplay, it failed to open the device.
[root@SIRIUS /flash2]#./aplay /usr/local/Songs/AjRaj-Anthimanthirai-Theme4.mp3 ALSA lib pcm.c:2144:(snd_pcm_open_noupdate) Unknown PCM default
Apparently, alsa-lib's .conf files are not installed in /usr/share/alsa/.
HTH Clemens
Hi Clemens,
Thanks for your reply. Still the problem is not solved.
I have downloaded the followings packages from the site www.alsa-project.org and built them for arm.
1. alsa-lib-1.0.14
2. alsa-utils-1.0.14
Configuring and Building instructions
pwd
/home/tharma/alsa-packages
cd alsa-lib-1.0.14
./configure --host=arm-linux --prefix=$PWD/install CROSS_COMPILE=arm-linux-
make
make install
cd ../alsa-utils-1.0.14
./configure --host=arm-linux --prefix=$PWD/install CROSS_COMPILE=arm-linux CFLAGS=-I/home/tharma/alsa-packages/alsa-lib-1.0.14/install/include LDFLAGS=-I/home/tharma/alsa-packages/alsa-lib-1.0.14/install/lib
make make install
I have got the share/alsa directory in the alsa-lib package. I have downoaded this diretory to the /usr/share/ path in my target board. But still the aplay application fails to open the alsa device.
Regards, Tharmarajan G
On Wed, 2007-10-24 at 08:24 +0200, Clemens Ladisch wrote:
Tharmarajan G wrote:
I have built the kernel image with ALSA audio support and the applications aplay and arecord for playing and recording audio data using ALSA api.
I have got the alsa related entries in the /proc filesystem . But when playing the aplay, it failed to open the device.
[root@SIRIUS /flash2]#./aplay /usr/local/Songs/AjRaj-Anthimanthirai-Theme4.mp3 ALSA lib pcm.c:2144:(snd_pcm_open_noupdate) Unknown PCM default
Apparently, alsa-lib's .conf files are not installed in /usr/share/alsa/.
HTH Clemens _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
At Wed, 24 Oct 2007 15:19:47 +0530, Tharmarajan G wrote:
Hi Clemens,
Thanks for your reply. Still the problem is not solved.
I have downloaded the followings packages from the site www.alsa-project.org and built them for arm.
alsa-lib-1.0.14
alsa-utils-1.0.14
Configuring and Building instructions
pwd
/home/tharma/alsa-packages
cd alsa-lib-1.0.14
./configure --host=arm-linux --prefix=$PWD/install CROSS_COMPILE=arm-linux-
Changing prefix in configure to a non-common path is wrong in general. This will involve other values, especially in the case of ALSA, the path compiled into the binary such as config file path is changed too.
For specifying the installation root, pass via $DESTDIR at make install.
Takashi
participants (3)
-
Clemens Ladisch -
Takashi Iwai -
Tharmarajan G