1 files changed, 5 insertions, 0 deletions
diff --git a/src/pcm_io.h b/src/pcm_io.h
index 1b68ac8..3c622fd 100644
--- a/src/pcm_io.h
+++ b/src/pcm_io.h
@@ -30,6 +30,7 @@
 #ifndef TINYALSA_SRC_PCM_IO_H
 #define TINYALSA_SRC_PCM_IO_H
 
+#include <poll.h>
 #include <sound/asound.h>
 
 struct snd_node;
@@ -39,6 +40,10 @@ struct pcm_ops {
                  unsigned int flags, void **data, struct snd_node *node);
     void (*close) (void *data);
     int (*ioctl) (void *data, unsigned int cmd, ...);
+    void *(*mmap) (void *data, void *addr, size_t length, int prot, int flags,
+                   off_t offset);
+    int (*munmap) (void *data, void *addr, size_t length);
+    int (*poll) (void *data, struct pollfd *pfd, nfds_t nfds, int timeout);
 };
 
 extern const struct pcm_ops hw_ops;