From bde184cd77e6a17c33b48e8295822d89e4e8bbd9 Mon Sep 17 00:00:00 2001
From: Alexandre Ratchov <alex@caoua.org>
Date: Fri, 5 Oct 2012 21:27:11 +0200
Subject: [PATCH] save fifo pointers for debug purposes

---
 libsndio/sio_sun.c | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/libsndio/sio_sun.c b/libsndio/sio_sun.c
index a0bc99e..65f2bc7 100644
--- a/libsndio/sio_sun.c
+++ b/libsndio/sio_sun.c
@@ -55,6 +55,12 @@ struct sio_sun_hdl {
 	int offset;			/* frames play is ahead of record */
 	int idelta, odelta;		/* position reported to client */
 	int mix_fd, mix_index;		/* /dev/mixerN stuff */
+#ifdef DEBUG
+	/* save these for core dumps */
+	int isamples, osamples;
+	int ixrun, oxrun;
+	int cpos, rpos, wpos;
+#endif
 };
 
 static void sio_sun_close(struct sio_hdl *);
@@ -784,6 +790,9 @@ sio_sun_read(struct sio_hdl *sh, void *buf, size_t len)
 		hdl->sio.eof = 1;
 		return 0;
 	}
+#ifdef DEBUG
+	hdl->rpos += n;
+#endif
 	return n;
 }
 
@@ -845,6 +854,10 @@ sio_sun_wsil(struct sio_sun_hdl *hdl)
 		}
 		hdl->offset += (int)n / (int)hdl->obpf;
 		DPRINTF("sio_sun_wsil: inserted %ld/%ld bytes\n", n, todo);
+#ifdef DEBUG
+		hdl->wpos += n;
+#endif
+
 	}
 	return 1;
 }
@@ -869,6 +882,9 @@ sio_sun_write(struct sio_hdl *sh, const void *buf, size_t len)
 		}
  		return 0;
 	}
+#ifdef DEBUG
+	hdl->wpos += n;
+#endif
 	if (hdl->filling) {
 		if (!sio_sun_autostart(hdl))
 			return 0;
@@ -908,6 +924,9 @@ sio_sun_revents(struct sio_hdl *sh, struct pollfd *pfd)
 			hdl->sio.eof = 1;
 			return POLLHUP;
 		}
+#ifdef DEBUG
+		hdl->osamples = ao.samples;
+#endif
 		delta = (ao.samples - hdl->obytes) / hdl->obpf;
 		hdl->obytes = ao.samples;
 		hdl->odelta += delta;
@@ -920,6 +939,9 @@ sio_sun_revents(struct sio_hdl *sh, struct pollfd *pfd)
 			hdl->sio.eof = 1;
 			return POLLHUP;
 		}
+#ifdef DEBUG
+		hdl->isamples = hdl->ibytes;
+#endif
 		delta = (ao.samples - hdl->ibytes) / hdl->ibpf;
 		hdl->ibytes = ao.samples;
 		hdl->idelta += delta;
@@ -932,6 +954,9 @@ sio_sun_revents(struct sio_hdl *sh, struct pollfd *pfd)
 			hdl->sio.eof = 1;
 			return POLLHUP;
 		}
+#ifdef DEBUG
+		hdl->oxrun = xrun;
+#endif
 		doerr = xrun - hdl->oerr;
 		hdl->oerr = xrun;
 		if (!(hdl->sio.mode & SIO_REC))
@@ -943,6 +968,9 @@ sio_sun_revents(struct sio_hdl *sh, struct pollfd *pfd)
 			hdl->sio.eof = 1;
 			return POLLHUP;
 		}
+#ifdef DEBUG
+		hdl->ixrun = xrun;
+#endif
 		dierr = xrun - hdl->ierr;
 		hdl->ierr = xrun;
 		if (!(hdl->sio.mode & SIO_PLAY))
@@ -955,6 +983,9 @@ sio_sun_revents(struct sio_hdl *sh, struct pollfd *pfd)
 
 	delta = (hdl->idelta > hdl->odelta) ? hdl->idelta : hdl->odelta;
 	if (delta > 0) {
+#ifdef DEBUG
+		hdl->cpos += delta;
+#endif
 		sio_onmove_cb(&hdl->sio, delta);
 		hdl->idelta -= delta;
 		hdl->odelta -= delta;