A2DP spec allow bitpool changes midstream which is why sbc configuration
has a range of values for bitpool that the encoder can use and decoder
must support.
Bitpool changes do not affect the state of encoder/decoder so they don't
need to be reinitialize when this happens, so the impact is fairly small,
what it does change is the frame length so encoders may change the
bitpool to use the link more efficiently.
priv->frame.codesize = sbc_get_codesize(sbc);
priv->frame.length = framelen;
- }
+ } else if (priv->frame.bitpool != sbc->bitpool)
+ sbc->bitpool = priv->frame.bitpool;
if (!output)
return framelen;
sbc_encoder_init(&priv->enc_state, &priv->frame);
priv->init = 1;
+ } else if (priv->frame.bitpool != sbc->bitpool) {
+ priv->frame.length = sbc_get_frame_length(sbc);
+ priv->frame.bitpool = sbc->bitpool;
}
/* input must be large enough to encode a complete frame */
struct sbc_priv *priv;
priv = sbc->priv;
- if (priv->init)
+ if (priv->init && priv->frame.bitpool == sbc->bitpool)
return priv->frame.length;
subbands = sbc->subbands ? 8 : 4;