From bdec7a9ad3f5b3911dbb3b425d76ca3a53295a98 Mon Sep 17 00:00:00 2001
From: Jaroslav Kysela <perex@perex.cz>
Date: Thu, 26 Feb 2004 10:52:40 +0000
Subject: [PATCH] Cleanup - the libaoss.so shouldn't depend on libasound.so

---
 alsa/alsa-local.h    | 20 ++++++++++++++++++++
 alsa/alsa-oss-emul.h | 19 -------------------
 alsa/alsa-oss.c      | 38 ++++++++++++++++++++++++++++++--------
 alsa/mixer.c         |  2 +-
 alsa/pcm.c           |  2 +-
 5 files changed, 52 insertions(+), 29 deletions(-)
 create mode 100644 alsa/alsa-local.h

diff --git a/alsa/alsa-local.h b/alsa/alsa-local.h
new file mode 100644
index 0000000..e5c89aa
--- /dev/null
+++ b/alsa/alsa-local.h
@@ -0,0 +1,20 @@
+#include "alsa-oss-emul.h"
+
+#if 1
+#define DEBUG_POLL
+#define DEBUG_SELECT
+#ifdef NEW_MACRO_VARARGS
+#define DEBUG(...) do { if (alsa_oss_debug) fprintf(stderr, __VA_ARGS__); } while (0)
+#else /* !NEW_MACRO_VARARGS */
+#define DEBUG(args...) do { if (alsa_oss_debug) fprintf(stderr, ##args); } while (0)
+#endif
+#else
+#ifdef NEW_MACRO_VARARGS
+#define DEBUG(...)
+#else /* !NEW_MACRO_VARARGS */
+#define DEBUG(args...)
+#endif
+#endif
+
+extern int alsa_oss_debug;
+extern snd_output_t *alsa_oss_debug_out;
diff --git a/alsa/alsa-oss-emul.h b/alsa/alsa-oss-emul.h
index 5fbd906..756f50b 100644
--- a/alsa/alsa-oss-emul.h
+++ b/alsa/alsa-oss-emul.h
@@ -24,22 +24,6 @@
 #define NEW_MACRO_VARARGS
 #endif
 
-#if 1
-#define DEBUG_POLL
-#define DEBUG_SELECT
-#ifdef NEW_MACRO_VARARGS
-#define DEBUG(...) do { if (alsa_oss_debug) fprintf(stderr, __VA_ARGS__); } while (0)
-#else /* !NEW_MACRO_VARARGS */
-#define DEBUG(args...) do { if (alsa_oss_debug) fprintf(stderr, ##args); } while (0)
-#endif
-#else
-#ifdef NEW_MACRO_VARARGS
-#define DEBUG(...)
-#else /* !NEW_MACRO_VARARGS */
-#define DEBUG(args...)
-#endif
-#endif
-
 #define OSS_MAJOR		14
 #define OSS_DEVICE_MIXER	0
 #define OSS_DEVICE_SEQUENCER	1
@@ -78,7 +62,4 @@ extern int lib_oss_mixer_open(const char *pathname, int flags, ...);
 extern int lib_oss_mixer_close(int fd);
 extern int lib_oss_mixer_ioctl(int fd, unsigned long int request, ...);
 
-extern int alsa_oss_debug;
-extern snd_output_t *alsa_oss_debug_out;
-
 #endif /* __ALSA_OSS_EMUL_H */
diff --git a/alsa/alsa-oss.c b/alsa/alsa-oss.c
index 1005f19..497e7e4 100644
--- a/alsa/alsa-oss.c
+++ b/alsa/alsa-oss.c
@@ -30,17 +30,38 @@
 #include <sys/mman.h>
 #include <stdarg.h>
 #include <unistd.h>
+#include <fcntl.h>
 #include <dlfcn.h>
 #include <stdio.h>
-#include <fcntl.h>
+#include <stdlib.h>
+#include <string.h>
 #include <limits.h>
 #include <errno.h>
 #include <assert.h>
-#include <linux/soundcard.h>
-#include <alsa/asoundlib.h>
 
 #include "alsa-oss-emul.h"
 
+#ifndef ATTRIBUTE_UNUSED
+/** do not print warning (gcc) when function parameter is not used */
+#define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#endif
+
+#if 1
+#define DEBUG_POLL
+#define DEBUG_SELECT
+#ifdef NEW_MACRO_VARARGS
+#define DEBUG(...) do { if (oss_wrapper_debug) fprintf(stderr, __VA_ARGS__); } while (0)
+#else /* !NEW_MACRO_VARARGS */
+#define DEBUG(args...) do { if (oss_wrapper_debug) fprintf(stderr, ##args); } while (0)
+#endif
+#else
+#ifdef NEW_MACRO_VARARGS
+#define DEBUG(...)
+#else /* !NEW_MACRO_VARARGS */
+#define DEBUG(args...)
+#endif
+#endif
+
 int (*_select)(int n, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, struct timeval *timeout);
 int (*_poll)(struct pollfd *ufds, unsigned int nfds, int timeout);
 int (*_open)(const char *file, int oflag, ...);
@@ -76,6 +97,7 @@ typedef struct {
 	void *mmap_area;
 } fd_t;
 
+static int oss_wrapper_debug = 0;
 static int open_max;
 static int poll_fds_add = 0;
 static fd_t **fds;
@@ -407,7 +429,7 @@ int poll(struct pollfd *pfds, unsigned long nfds, int timeout)
 	if (direct)
 		return _poll(pfds, nfds, timeout);
 #ifdef DEBUG_POLL
-	if (alsa_oss_debug) {
+	if (oss_wrapper_debug) {
 		fprintf(stderr, "Orig enter ");
 		dump_poll(pfds, nfds, timeout);
 		fprintf(stderr, "Changed enter ");
@@ -450,7 +472,7 @@ int poll(struct pollfd *pfds, unsigned long nfds, int timeout)
 			count1++;
 	}
 #ifdef DEBUG_POLL
-	if (alsa_oss_debug) {
+	if (oss_wrapper_debug) {
 		fprintf(stderr, "Changed exit ");
 		dump_poll(pfds1, nfds1, timeout);
 		fprintf(stderr, "Orig exit ");
@@ -529,7 +551,7 @@ int select(int nfds, fd_set *rfds, fd_set *wfds, fd_set *efds,
 	if (direct)
 		return _select(nfds, rfds, wfds, efds, timeout);
 #ifdef DEBUG_SELECT
-	if (alsa_oss_debug) {
+	if (oss_wrapper_debug) {
 		fprintf(stderr, "Orig enter ");
 		dump_select(nfds, rfds, wfds, efds, timeout);
 		fprintf(stderr, "Changed enter ");
@@ -598,7 +620,7 @@ int select(int nfds, fd_set *rfds, fd_set *wfds, fd_set *efds,
 			count1++;
 	}
 #ifdef DEBUG_SELECT
-	if (alsa_oss_debug) {
+	if (oss_wrapper_debug) {
 		fprintf(stderr, "Changed exit ");
 		dump_select(nfds1, rfds1, wfds1, efds1, timeout);
 		fprintf(stderr, "Orig exit ");
@@ -676,7 +698,7 @@ static void initialize()
 		return;
 	s = getenv("ALSA_OSS_DEBUG");
 	if (s)
-		alsa_oss_debug = 1;
+		oss_wrapper_debug = 1;
 	open_max = sysconf(_SC_OPEN_MAX);
 	if (open_max < 0)
 		exit(1);
diff --git a/alsa/mixer.c b/alsa/mixer.c
index c0e86cc..f018362 100644
--- a/alsa/mixer.c
+++ b/alsa/mixer.c
@@ -38,7 +38,7 @@
 #include <linux/soundcard.h>
 #include <alsa/asoundlib.h>
 
-#include "alsa-oss-emul.h"
+#include "alsa-local.h"
 
 typedef struct _oss_mixer {
 	int fileno;
diff --git a/alsa/pcm.c b/alsa/pcm.c
index 8f7faf2..5d1a324 100644
--- a/alsa/pcm.c
+++ b/alsa/pcm.c
@@ -38,7 +38,7 @@
 #include <linux/soundcard.h>
 #include <alsa/asoundlib.h>
 
-#include "alsa-oss-emul.h"
+#include "alsa-local.h"
 
 int alsa_oss_debug = 0;
 snd_output_t *alsa_oss_debug_out = NULL;
-- 
2.47.1