Hi all,
I'm trying to build mp3 jukebox out of Efika, which is an embedded
MPC5200 based board. I got to the stage where I'm able to play a wav
file using aplay. But when I try to play an mp3 using mpg123 it
freezes after decoding a few frames. I spent a few hours trying to get
this work, but I'm
James Le Cuirot wrote:
>
> "Since compressed data is transmitted in place of PCM data, the bitrate
> of the compressed stream must exactly match uncompressed stereo 16-bit
> PCM bitrate. As a rule, compressed stream (even a multi-channel one)
> having a lower bitrate, compressed stream must be padd
On Mon, 25 Oct 2010 10:45:10 -0400
Paul Braman wrote:
> Interesting, but I see a couple of idiological problems with this
> approach.
>
> "dat" implies reading 32-bit frames at a rate of 48KHz. That's all
> fine and good but an S/PDIF bitstream is going to be pumping data
> faster than that rate
James Le Cuirot wrote:
>
> If you want to try it for yourself, it's as simple as...
>
> arecord -Dspdif -f dat -t raw | spdifextract | ac3dec -6
Interesting, but I see a couple of idiological problems with this approach.
"dat" implies reading 32-bit frames at a rate of 48KHz. That's all
fine and
On Mon, 25 Oct 2010 15:18:03 +0100
James Le Cuirot wrote:
> Apparently a PLL is needed to synchronise the clock frequency but I
> haven't been able to determine whether any sound cards out there have
> these at all. I've heard of some Creative cards having on-board AC3
> decoders but I think this
On Mon, 25 Oct 2010 09:50:19 -0400
Paul Braman wrote:
> I'll assume I want to read in blocks of 1536 bytes-at-a-time as long
> as ALSA is properly synchronizing to the S/PDIF frame and giving me
> aligned blocks. Is this an assumption I can make?
Probably not. I recently thought I would be cleve
Let me first describe the concepts I understand and then I might be
able to ask some questions that make sense.
Data is broken up on an S/PDIF stream into 64-bit frames grouped into
192-frame blocks (1536-byte blocks). Assuming I can properly decode
all of the status bits in each frame, blah blah
[David Swann, venerdì 22 ottobre 2010]
> Am new to alsa, can anyone help me with this.
>
> I've tested the card with aplay and works fine but how do I set it
> permanently to playing all sound out of HDMI. The card is a Nvidia.
You should create an $HOME/.asoundrc file.
I can't remember the exact
Hello,
I am new to ALSA. I would like to know how does a CDROM drive ( having an Audio
CD) be treated as a ALSA device?
Do I have to write a ALSA driver for the CDROM? The CDROM has it's
control/command through I2C and Audio output through
S/PDIF Channel.
Regards,
Souvik
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