1 files changed, 104 insertions, 0 deletions
diff --git a/engines/sci/sfx/timer/pthread.c b/engines/sci/sfx/timer/pthread.c
new file mode 100644
index 0000000000..074adbe08f
--- /dev/null
+++ b/engines/sci/sfx/timer/pthread.c
@@ -0,0 +1,104 @@
+/***************************************************************************
+ pthread.c Copyright (C) 2005 Walter van Niftrik
+
+
+ This program may be modified and copied freely according to the terms of
+ the GNU general public license (GPL), as long as the above copyright
+ notice and the licensing information contained herein are preserved.
+
+ Please refer to www.gnu.org for licensing details.
+
+ This work is provided AS IS, without warranty of any kind, expressed or
+ implied, including but not limited to the warranties of merchantibility,
+ noninfringement, and fitness for a specific purpose. The author will not
+ be held liable for any damage caused by this work or derivatives of it.
+
+ By using this source code, you agree to the licensing terms as stated
+ above.
+
+
+ Please contact the maintainer for bug reports or inquiries.
+
+ Current Maintainer:
+
+    Walter van Niftrik <w.f.b.w.v.niftrik@stud.tue.nl>
+
+***************************************************************************/
+
+#include <sfx_timer.h>
+#include <pthread.h>
+#include <unistd.h>
+
+/* Timer frequency in hertz */
+#define FREQ 60
+
+/* Delay in ms */
+#define DELAY (1000 / FREQ)
+
+static void (*callback)(void *) = NULL;
+static void *callback_data = NULL;
+pthread_t thread;
+volatile static int thread_run;
+
+static void *
+timer_thread(void *arg)
+{
+	while (thread_run) {
+		if (callback)
+			callback(callback_data);
+
+		usleep(DELAY * 1000);
+	}
+
+	return NULL;
+}
+
+static int
+set_option(char *name, char *value)
+{
+	return SFX_ERROR;
+}
+
+static int
+init(void (*func)(void *), void *data)
+{
+	if (callback) {
+		fprintf(stderr, "Error: Attempt to initialize pthread timer more than once\n");
+		return SFX_ERROR;
+	}
+
+	if (!func) {
+		fprintf(stderr, "Error: Attempt to initialize pthread timer w/o callback\n");
+		return SFX_ERROR;
+	}
+
+	callback = func;
+	callback_data = data;
+
+	thread_run = 1;
+	if (pthread_create(&thread, NULL, timer_thread, NULL)) {
+		fprintf(stderr, "Error: Could not create thread.\n");
+		return SFX_ERROR;
+	}
+
+	return SFX_OK;
+}
+
+static int
+stop(void)
+{
+	thread_run = 0;
+	pthread_join(thread, NULL);
+
+	return SFX_OK;
+}
+
+sfx_timer_t sfx_timer_pthread = {
+	"pthread",
+	"0.1",
+	DELAY,
+	0,
+	&set_option,
+	&init,
+	&stop
+};