audio/filter: prepare filter chain for non-interleaved audio

Based on earlier work by Stefano Pigozzi.

There are 2 changes:

1. Instead of mp_audio.audio, mp_audio.planes[0] must be used.

2. mp_audio.len used to contain the size of the audio in bytes. Now
   mp_audio.samples must be used. (Where 1 sample is the smallest unit
   of audio that covers all channels.)

Also, some filters need changes to reject non-interleaved formats
properly.

Nothing uses the non-interleaved features yet, but this is needed so
that things don't just break when doing so.

1 files changed, 1 insertions, 1 deletions

diff --git a/audio/filter/af_bs2b.c b/audio/filter/af_bs2b.c
index 0e77b3e4eb..5e0caf28af 100644
--- a/audio/filter/af_bs2b.c
+++ b/audio/filter/af_bs2b.c
@@ -42,7 +42,7 @@ static struct mp_audio *play_##name(struct af_instance *af, struct mp_audio *dat
 { \
     /* filter is called for all pairs of samples available in the buffer */ \
     bs2b_cross_feed_##name(((struct af_bs2b*)(af->priv))->filter, \
-        (type*)(data->audio), data->len/data->bps/2); \
+        (type*)(data->planes[0]), data->samples); \
 \
     return data; \
 }