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, 9 insertions, 8 deletions

diff --git a/audio/filter/af_drc.c b/audio/filter/af_drc.c
index 9bbbde4831..589844d89b 100644
--- a/audio/filter/af_drc.c
+++ b/audio/filter/af_drc.c
@@ -88,6 +88,7 @@ static int control(struct af_instance* af, int cmd, void* arg)
     // Sanity check
     if(!arg) return AF_ERROR;
 
+    mp_audio_force_interleaved_format((struct mp_audio*)arg);
     mp_audio_copy_config(af->data, (struct mp_audio*)arg);
 
     if(((struct mp_audio*)arg)->format != (AF_FORMAT_S16_NE)){
@@ -119,8 +120,8 @@ static void uninit(struct af_instance* af)
 static void method1_int16(af_drc_t *s, struct mp_audio *c)
 {
   register int i = 0;
-  int16_t *data = (int16_t*)c->audio;	// Audio data
-  int len = c->len/2;		// Number of samples
+  int16_t *data = (int16_t*)c->planes[0];	// Audio data
+  int len = c->samples*c->nch;		// Number of samples
   float curavg = 0.0, newavg, neededmul;
   int tmp;
 
@@ -161,8 +162,8 @@ static void method1_int16(af_drc_t *s, struct mp_audio *c)
 static void method1_float(af_drc_t *s, struct mp_audio *c)
 {
   register int i = 0;
-  float *data = (float*)c->audio;	// Audio data
-  int len = c->len/4;		// Number of samples
+  float *data = (float*)c->planes[0];	// Audio data
+  int len = c->samples*c->nch;		// Number of samples
   float curavg = 0.0, newavg, neededmul, tmp;
 
   for (i = 0; i < len; i++)
@@ -198,8 +199,8 @@ static void method1_float(af_drc_t *s, struct mp_audio *c)
 static void method2_int16(af_drc_t *s, struct mp_audio *c)
 {
   register int i = 0;
-  int16_t *data = (int16_t*)c->audio;	// Audio data
-  int len = c->len/2;		// Number of samples
+  int16_t *data = (int16_t*)c->planes[0];	// Audio data
+  int len = c->samples*c->nch;		// Number of samples
   float curavg = 0.0, newavg, avg = 0.0;
   int tmp, totallen = 0;
 
@@ -248,8 +249,8 @@ static void method2_int16(af_drc_t *s, struct mp_audio *c)
 static void method2_float(af_drc_t *s, struct mp_audio *c)
 {
   register int i = 0;
-  float *data = (float*)c->audio;	// Audio data
-  int len = c->len/4;		// Number of samples
+  float *data = (float*)c->planes[0];	// Audio data
+  int len = c->samples*c->nch;		// Number of samples
   float curavg = 0.0, newavg, avg = 0.0, tmp;
   int totallen = 0;