From 4c80bf4a2082c4922094f7e8ce75193edb6be80f Mon Sep 17 00:00:00 2001
From: Andre Noll <maan@congo.fml.local>
Date: Sun, 20 Aug 2006 17:12:35 +0200
Subject: [PATCH] osx_write: kill superfluous semaphore code

---
 osx_writer.c | 23 +++--------------------
 1 file changed, 3 insertions(+), 20 deletions(-)

diff --git a/osx_writer.c b/osx_writer.c
index 54a1acd1..b0d672c9 100644
--- a/osx_writer.c
+++ b/osx_writer.c
@@ -32,7 +32,6 @@
 #include <CoreAudio/CoreAudio.h>
 #include <AudioUnit/AudioUnit.h>
 #include <AudioToolbox/DefaultAudioOutput.h>
-#include <semaphore.h>
 struct osx_buffer {
 	float *buffer;
 	long size;
@@ -47,7 +46,6 @@ struct private_osx_writer_data {
 	short *ptr;
 	AudioUnit output;
 	char play;
-	sem_t *semaphore;
 	osx_buffer *from; /* Current buffers */
 	osx_buffer *to;
 	unsigned samplerate;
@@ -92,7 +90,6 @@ static void init_buffers(struct private_osx_writer_data *powd)
 		(*ptrptr)->buffer = NULL;
 		ptrptr = &(*ptrptr)->next;
 		/* This buffer is ready for filling (of course, it is empty!) */
-		sem_post(powd->semaphore);
 	}
 	*ptrptr = powd->from = powd->to;
 }
@@ -146,6 +143,7 @@ static OSStatus osx_callback(void * inClientData,
 		dest = outOutputData->mBuffers[i].mData;
 		while (m > 0) {
 			if ((n = powd->from->remaining) <= 0) {
+				PARA_INFO_LOG("%s", "buffer underrun\n");
 				/* no more bytes in the current read buffer! */
 				while ((n = powd->from->remaining) <= 0)
 					/* wait for the results */
@@ -163,11 +161,8 @@ static OSStatus osx_callback(void * inClientData,
 			/* remember all done work */
 			m -= n;
 			powd->from->ptr += n;
-			if ((powd->from->remaining -= n) <= 0) {
-				/* tell that there's a buffer to fill */
-				sem_post(powd->semaphore);
+			if ((powd->from->remaining -= n) <= 0)
 				powd->from = powd->from->next;
-			}
 		}
 	}
 	return 0;
@@ -181,8 +176,7 @@ static int osx_writer_open(struct writer_node *wn)
 	Component comp;
 	AURenderCallbackStruct inputCallback = {osx_callback, powd};
 	AudioStreamBasicDescription format;
-	char s[10];
-	int m, ret;
+	int ret;
 	struct writer_node_group *wng = wn->wng;
 	struct osx_write_args_info *conf = wn->conf;
 
@@ -239,16 +233,6 @@ static int osx_writer_open(struct writer_node *wn)
 			kAudioUnitScope_Input, 0, &format,
 			sizeof(AudioStreamBasicDescription)))
 		goto e2;
-	/* init the semaphore */
-	strcpy(s, "/mpg123-0000");
-	do {
-		for (m = 10;; m--)
-			if( (s[m]++) <= '9')
-				break;
-			else
-				s[m] = '0';
-	} while ((powd->semaphore = sem_open(s, O_CREAT | O_EXCL, 0644, 0))
-		== (sem_t *)SEM_FAILED);
 	init_buffers(powd);
 	ret = -E_ADD_CALLBACK;
 	if (AudioUnitSetProperty(powd->output, kAudioUnitProperty_SetRenderCallback,
@@ -290,7 +274,6 @@ static void osx_writer_close(struct writer_node *wn)
 	AudioUnitUninitialize(powd->output);
 	CloseComponent(powd->output);
 	destroy_buffers(powd);
-	sem_close(powd->semaphore);
 	free(powd);
 }
 
-- 
2.39.2