1 files changed, 40 insertions, 0 deletions
diff --git a/pd/src/s_audio_alsa.h b/pd/src/s_audio_alsa.h
new file mode 100644
index 00000000..813be211
--- /dev/null
+++ b/pd/src/s_audio_alsa.h
@@ -0,0 +1,40 @@
+/* Copyright (c) 1997- Guenter Geiger, Miller Puckette, Larry Troxler,
+* Winfried Ritsch, Karl MacMillan, and others.
+* For information on usage and redistribution, and for a DISCLAIMER OF ALL
+* WARRANTIES, see the file, "LICENSE.txt," in this distribution.  */
+
+
+typedef int16_t t_alsa_sample16;
+typedef int32_t t_alsa_sample32;
+#define ALSA_SAMPLEWIDTH_16 sizeof(t_alsa_sample16)
+#define ALSA_SAMPLEWIDTH_32 sizeof(t_alsa_sample32)
+#define ALSA_XFERSIZE16  (signed int)(sizeof(t_alsa_sample16) * DEFDACBLKSIZE)
+#define ALSA_XFERSIZE32  (signed int)(sizeof(t_alsa_sample32) * DEFDACBLKSIZE)
+#define ALSA_MAXDEV 4
+#define ALSA_JITTER 1024
+#define ALSA_EXTRABUFFER 2048
+#define ALSA_DEFFRAGSIZE 64
+#define ALSA_DEFNFRAG 12
+
+#ifndef INT32_MAX
+#define INT32_MAX 0x7fffffff
+#endif
+
+typedef struct _alsa_dev
+{
+    snd_pcm_t *a_handle;
+    int a_devno;
+    int a_sampwidth;
+    int a_channels;
+    char **a_addr;
+    int a_synced; 
+} t_alsa_dev;
+
+extern t_alsa_dev alsa_indev[ALSA_MAXDEV];
+extern t_alsa_dev alsa_outdev[ALSA_MAXDEV];
+extern int alsa_nindev;
+extern int alsa_noutdev;
+
+int alsamm_open_audio(int rate);
+void alsamm_close_audio(void);
+int alsamm_send_dacs(void);