[alsa-devel] [tinycompress]how should I call compress_open for aac ltp file playback?

Keyon.Jey yang.jie at linux.intel.com
Wed Jun 5 10:27:44 CEST 2013

On 06/05/2013 04:01 PM, Charles Keepax wrote:
> On Wed, Jun 05, 2013 at 02:46:04PM +0800, Keyon.Jey wrote:
>> I am trying to use tinycompress for hwdecoder. everything works fine,
>> but after compress_open (with profile = SND_AUDIOPROFILE_AAC level=0
>> ch_mode=0 rate_control=0), the playback of my aac-ltp-16bit-48KHz-Stereo
>> file is faster than it should be.  Am I wrong?
> Vinod is probably the person for this one, as I am not so
> familiar with what you guys have done internally. However, my
> guess would be you are not setting the sample_rate correctly? It
> likely needs to be set to the appropriate SNDRV_PCM_RATE_XXXX
> define. The source for cplay included in the tinycompress
> repository is a good example of using the tinycompress library.
> Charles
> _______________________________________________
> Alsa-devel mailing list
> Alsa-devel at alsa-project.org
> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
thanks, Charles. the print log showed me that I have set 
SNDRV_PCM_RATE_48000 which seems no problem.
the cplay example code is only for mp3 file, and it also not set .level, 
.ch_mode and .rate_control.
Vinod, what's your suggestion?


More information about the Alsa-devel mailing list