[alsa-devel] Application supporting forward/rewind APIs
superquad.vortex2 at gmail.com
Wed Oct 7 08:58:23 CEST 2009
It seem that the difference between the application pointer and the hardware
pointer is just the theoretical value which none of the sound card can
static snd_pcm_sframes_t snd_pcm_hw_rewindable(snd_pcm_t *pcm)
To allow the application rewind the application pointer to hardware pointer
and rewrite the next sample immediately at any time
The audio controller have to fetch the audio data as the same rate as the
The practical value may be the difference between the application pointer
and the nearest period boundary
2009/9/24 Takashi Iwai <tiwai at suse.de>
> At Thu, 24 Sep 2009 13:04:24 +0530,
> Anuj Aggarwal wrote:
> > Hi,
> > I want to try the forward/rewind APIs supported by the ALSA library.
> > Can someone point to an ALSA application which exercises these APIs?
> Pulseaudio is using snd_pcm_rewind().
> About snd_pcm_forward(), I don't know of...
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> Alsa-devel at alsa-project.org
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