1 files changed, 2 insertions, 3 deletions
diff --git a/adpcm.h b/adpcm.h
index 92ac77c73d..d20dbc5717 100644
--- a/adpcm.h
+++ b/adpcm.h
@@ -7,9 +7,8 @@
   ((IMA_ADPCM_BLOCK_SIZE - IMA_ADPCM_PREAMBLE_SIZE) * 2)
 
 #define MS_ADPCM_PREAMBLE_SIZE 7
-#define MS_ADPCM_BLOCK_SIZE 256
 #define MS_ADPCM_SAMPLES_PER_BLOCK \
-  ((MS_ADPCM_BLOCK_SIZE - MS_ADPCM_PREAMBLE_SIZE) * 2)
+  ((sh_audio->wf->nBlockAlign - MS_ADPCM_PREAMBLE_SIZE) * 2)
 
 // pretend there's such a thing as mono for this format
 #define FOX62_ADPCM_PREAMBLE_SIZE 8
@@ -20,7 +19,7 @@
 int ima_adpcm_decode_block(unsigned short *output, unsigned char *input,
   int channels);
 int ms_adpcm_decode_block(unsigned short *output, unsigned char *input,
-  int channels);
+  int channels, int block_size);
 int fox62_adpcm_decode_block(unsigned short *output, unsigned char *input,
   int channels);