--- uae/src/include/audio.h	2018/04/24 17:00:29	1.1.1.5
+++ uae/src/include/audio.h	2018/04/24 17:04:10	1.1.1.7
@@ -14,7 +14,8 @@ extern struct audio_channel_data {
     unsigned long per;
     uae_u8 dmaen, intreq2, data_written;
     uaecptr lc, pt;
-    int state, wper, wlen;
+    int state, wper;
+    unsigned int wlen;
     int current_sample, last_sample;
     int vol;
     int *voltbl;
@@ -39,3 +40,5 @@ extern void audio_reset (void);
 extern void update_audio (void);
 extern void schedule_audio (void);
 extern void audio_evhandler (void);
+extern void audio_channel_enable_dma (struct audio_channel_data *cdp);
+extern void audio_channel_disable_dma (struct audio_channel_data *cdp);