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Add ioctls so that PCM decoder can configure the driver bitrate, num channels, and sample width

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This commit is contained in:
Gregory Nutt
2014-07-23 12:21:04 -06:00
parent 516b343666
commit 72133f5d95
4 changed files with 100 additions and 11 deletions
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audio/pcm_decode.c
+29 -3
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@@ -695,12 +695,13 @@ static int pcm_enqueuebuffer(FAR struct audio_lowerhalf_s *dev,
FAR struct pcm_decode_s *priv = (FAR struct pcm_decode_s *)dev;
FAR struct audio_lowerhalf_s *lower;
apb_samp_t bytesleft;
int ret;
DEBUGASSERT(priv);
audvdbg("Received buffer %p, streaming=%d\n", apb, priv->streaming);
lower = priv->lower;
DEBUGASSERT(lower && lower->ops->enqueuebuffer);
DEBUGASSERT(lower && lower->ops->enqueuebuffer && lower->ops->ioctl);
/* Are we streaming yet? */
@@ -734,8 +735,33 @@ static int pcm_enqueuebuffer(FAR struct audio_lowerhalf_s *dev,
priv->streaming = true;
/* Configure the lower level for the number of channels and bitrate */
#warning Missing logic
/* Configure the lower level for the number of channels, bitrate,
* and sample bitwidth.
*/
ret = lower->ops->ioctl(lower, AUDIOIOC_BITRATE,
(unsigned long)priv->samprate);
if (ret < 0)
{
auddbg("ERROR: Failed to set bit rate: %d\n", ret);
return ret;
}
ret = lower->ops->ioctl(lower, AUDIOIOC_NCHANNELS,
(unsigned long)priv->nchannels);
if (ret < 0)
{
auddbg("ERROR: Failed to set number of channels: %d\n", ret);
return ret;
}
ret = lower->ops->ioctl(lower, AUDIOIOC_SAMPWIDTH,
(unsigned long)priv->bpsamp);
if (ret < 0)
{
auddbg("ERROR: Failed to set sample width: %d\n", ret);
return ret;
}
/* Bump up the data offset and pass the buffer to the lower level */