Totally redo file formats

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@1130 f38db490-d61c-443f-a65b-d21fe96a405b

10 files changed, 44 insertions, 877 deletions

diff --git a/formats/Makefile b/formats/Makefile
index 885469463..540785b2d 100755
--- a/formats/Makefile
+++ b/formats/Makefile
@@ -11,9 +11,14 @@
 # the GNU General Public License
 #
 
-FORMAT_LIBS=format_g723.so format_wav.so format_mp3.so format_wav_gsm.so \
-	format_gsm.so format_vox.so format_pcm.so format_g729.so format_pcm_alaw.so
+FORMAT_LIBS=format_gsm.so format_wav.so format_mp3.so \
+	format_wav_gsm.so format_vox.so format_pcm.so format_g729.so \
+	format_pcm_alaw.so
 FORMAT_LIBS+=format_jpeg.so
+#
+# G723 simple frame is depricated
+#
+#FORMAT_LIBS+=format_g723.so
 
 GSMLIB=../codecs/gsm/lib/libgsm.a
 
diff --git a/formats/format_g723.c b/formats/format_g723.c
index 520aeb7ef..8ce2ec266 100755
--- a/formats/format_g723.c
+++ b/formats/format_g723.c
@@ -35,8 +35,6 @@ struct ast_filestream {
 	void *reserved[AST_RESERVED_POINTERS];
 	/* This is what a filestream means to us */
 	int fd; /* Descriptor */
-	u_int32_t lasttimeout;	/* Last amount of timeout */
-	struct ast_channel *owner;
 	struct ast_filestream *next;
 	struct ast_frame *fr;	/* Frame representation of buf */
 	struct timeval orig;	/* Original frame time */
@@ -44,7 +42,6 @@ struct ast_filestream {
 };
 
 
-static struct ast_filestream *glist = NULL;
 static pthread_mutex_t g723_lock = AST_MUTEX_INITIALIZER;
 static int glistcnt = 0;
 
@@ -64,10 +61,7 @@ static struct ast_filestream *g723_open(int fd)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
 		tmp->fr = (struct ast_frame *)tmp->buf;
 		tmp->fr->data = tmp->buf + sizeof(struct ast_frame);
 		tmp->fr->frametype = AST_FRAME_VOICE;
@@ -97,8 +91,6 @@ static struct ast_filestream *g723_rewrite(int fd, char *comment)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
 		tmp->owner = NULL;
 		tmp->fr = NULL;
diff --git a/formats/format_g729.c b/formats/format_g729.c
index ee6f6ab50..a2336c94b 100755
--- a/formats/format_g729.c
+++ b/formats/format_g729.c
@@ -41,19 +41,13 @@ struct ast_filestream {
 	   weird MS format */
 	/* This is what a filestream means to us */
 	int fd; /* Descriptor */
-	struct ast_channel *owner;
 	struct ast_frame fr;				/* Frame information */
 	char waste[AST_FRIENDLY_OFFSET];	/* Buffer for sending frames, etc */
 	char empty;							/* Empty character */
 	unsigned char g729[20];				/* Two Real G729 Frames */
-	int lasttimeout;
-	struct timeval last;
-	int adj;
-	struct ast_filestream *next;
 };
 
 
-static struct ast_filestream *glist = NULL;
 static pthread_mutex_t g729_lock = AST_MUTEX_INITIALIZER;
 static int glistcnt = 0;
 
@@ -74,17 +68,13 @@ static struct ast_filestream *g729_open(int fd)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
 		tmp->fr.data = tmp->g729;
 		tmp->fr.frametype = AST_FRAME_VOICE;
 		tmp->fr.subclass = AST_FORMAT_G729A;
 		/* datalen will vary for each frame */
 		tmp->fr.src = name;
 		tmp->fr.mallocd = 0;
-		tmp->lasttimeout = -1;
 		glistcnt++;
 		ast_pthread_mutex_unlock(&g729_lock);
 		ast_update_use_count();
@@ -105,11 +95,7 @@ static struct ast_filestream *g729_rewrite(int fd, char *comment)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
-		tmp->lasttimeout = -1;
 		glistcnt++;
 		ast_pthread_mutex_unlock(&g729_lock);
 		ast_update_use_count();
@@ -118,55 +104,24 @@ static struct ast_filestream *g729_rewrite(int fd, char *comment)
 	return tmp;
 }
 
-static struct ast_frame *g729_read(struct ast_filestream *s)
-{
-	return NULL;
-}
-
 static void g729_close(struct ast_filestream *s)
 {
-	struct ast_filestream *tmp, *tmpl = NULL;
 	if (ast_pthread_mutex_lock(&g729_lock)) {
 		ast_log(LOG_WARNING, "Unable to lock g729 list\n");
 		return;
 	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp == s) {
-			if (tmpl)
-				tmpl->next = tmp->next;
-			else
-				glist = tmp->next;
-			break;
-		}
-		tmpl = tmp;
-		tmp = tmp->next;
-	}
 	glistcnt--;
-	if (s->owner) {
-		s->owner->stream = NULL;
-		if (s->owner->streamid > -1)
-			ast_sched_del(s->owner->sched, s->owner->streamid);
-		s->owner->streamid = -1;
-	}
 	ast_pthread_mutex_unlock(&g729_lock);
 	ast_update_use_count();
-	if (!tmp) 
-		ast_log(LOG_WARNING, "Freeing a filestream we don't seem to own\n");
 	close(s->fd);
 	free(s);
 	s = NULL;
 }
 
-static int ast_read_callback(void *data)
+static struct ast_frame *g729_read(struct ast_filestream *s, int *whennext)
 {
-	int retval = 0;
 	int res;
-	int delay = 20;
-	struct ast_filestream *s = data;
-	struct timeval tv;
 	/* Send a frame from the file to the appropriate channel */
-
 	s->fr.frametype = AST_FRAME_VOICE;
 	s->fr.subclass = AST_FORMAT_G729A;
 	s->fr.offset = AST_FRIENDLY_OFFSET;
@@ -177,57 +132,10 @@ static int ast_read_callback(void *data)
 	if ((res = read(s->fd, s->g729, 20)) != 20) {
 		if (res)
 			ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
-		s->owner->streamid = -1;
-		return 0;
-	}
-	/* Lastly, process the frame */
-	if (ast_write(s->owner, &s->fr)) {
-		ast_log(LOG_WARNING, "Failed to write frame\n");
-		s->owner->streamid = -1;
-		return 0;
+		return NULL;
 	}
-	if (s->last.tv_usec || s->last.tv_usec) {
-		int ms;
-		gettimeofday(&tv, NULL);
-		ms = 1000 * (tv.tv_sec - s->last.tv_sec) + 
-			(tv.tv_usec - s->last.tv_usec) / 1000;
-		s->last.tv_sec = tv.tv_sec;
-		s->last.tv_usec = tv.tv_usec;
-		if ((ms - delay) * (ms - delay) > 4) {
-			/* Compensate if we're more than 2 ms off */
-			s->adj -= (ms - delay);
-		}
-#if 0
-		fprintf(stdout, "Delay is %d, adjustment is %d, last was %d\n", delay, s->adj, ms);
-#endif
-		delay += s->adj;
-		if (delay < 1)
-			delay = 1;
-	} else
-		gettimeofday(&s->last, NULL);
-	if (s->lasttimeout != delay) {
-		/* We'll install the next timeout now. */
-		s->owner->streamid = ast_sched_add(s->owner->sched,
-				delay, ast_read_callback, s); 
-		s->lasttimeout = delay;
-	} else {
-		/* Just come back again at the same time */
-		retval = -1;
-	}
-	return retval;
-}
-
-static int g729_apply(struct ast_channel *c, struct ast_filestream *s)
-{
-	/* Select our owner for this stream, and get the ball rolling. */
-	s->owner = c;
-	return 0;
-}
-
-static int g729_play(struct ast_filestream *s)
-{
-	ast_read_callback(s);
-	return 0;
+	*whennext = s->fr.samples;
+	return &s->fr;
 }
 
 static int g729_write(struct ast_filestream *fs, struct ast_frame *f)
@@ -299,8 +207,6 @@ int load_module()
 	return ast_format_register(name, exts, AST_FORMAT_G729A,
 								g729_open,
 								g729_rewrite,
-								g729_apply,
-								g729_play,
 								g729_write,
 								g729_seek,
 								g729_trunc,
@@ -314,20 +220,6 @@ int load_module()
 
 int unload_module()
 {
-	struct ast_filestream *tmp, *tmpl;
-	if (ast_pthread_mutex_lock(&g729_lock)) {
-		ast_log(LOG_WARNING, "Unable to lock g729 list\n");
-		return -1;
-	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp->owner)
-			ast_softhangup(tmp->owner, AST_SOFTHANGUP_APPUNLOAD);
-		tmpl = tmp;
-		tmp = tmp->next;
-		free(tmpl);
-	}
-	ast_pthread_mutex_unlock(&g729_lock);
 	return ast_format_unregister(name);
 }	
 
diff --git a/formats/format_gsm.c b/formats/format_gsm.c
index 0c36fde30..49d53df27 100755
--- a/formats/format_gsm.c
+++ b/formats/format_gsm.c
@@ -43,19 +43,13 @@ struct ast_filestream {
 	   weird MS format */
 	/* This is what a filestream means to us */
 	int fd; /* Descriptor */
-	struct ast_channel *owner;
 	struct ast_frame fr;				/* Frame information */
 	char waste[AST_FRIENDLY_OFFSET];	/* Buffer for sending frames, etc */
 	char empty;							/* Empty character */
 	unsigned char gsm[66];				/* Two Real GSM Frames */
-	int lasttimeout;
-	struct timeval last;
-	int adj;
-	struct ast_filestream *next;
 };
 
 
-static struct ast_filestream *glist = NULL;
 static pthread_mutex_t gsm_lock = AST_MUTEX_INITIALIZER;
 static int glistcnt = 0;
 
@@ -76,17 +70,13 @@ static struct ast_filestream *gsm_open(int fd)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
 		tmp->fr.data = tmp->gsm;
 		tmp->fr.frametype = AST_FRAME_VOICE;
 		tmp->fr.subclass = AST_FORMAT_GSM;
 		/* datalen will vary for each frame */
 		tmp->fr.src = name;
 		tmp->fr.mallocd = 0;
-		tmp->lasttimeout = -1;
 		glistcnt++;
 		ast_pthread_mutex_unlock(&gsm_lock);
 		ast_update_use_count();
@@ -107,11 +97,7 @@ static struct ast_filestream *gsm_rewrite(int fd, char *comment)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
-		tmp->lasttimeout = -1;
 		glistcnt++;
 		ast_pthread_mutex_unlock(&gsm_lock);
 		ast_update_use_count();
@@ -120,55 +106,22 @@ static struct ast_filestream *gsm_rewrite(int fd, char *comment)
 	return tmp;
 }
 
-static struct ast_frame *gsm_read(struct ast_filestream *s)
-{
-	return NULL;
-}
-
 static void gsm_close(struct ast_filestream *s)
 {
-	struct ast_filestream *tmp, *tmpl = NULL;
 	if (ast_pthread_mutex_lock(&gsm_lock)) {
 		ast_log(LOG_WARNING, "Unable to lock gsm list\n");
 		return;
 	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp == s) {
-			if (tmpl)
-				tmpl->next = tmp->next;
-			else
-				glist = tmp->next;
-			break;
-		}
-		tmpl = tmp;
-		tmp = tmp->next;
-	}
 	glistcnt--;
-	if (s->owner) {
-		s->owner->stream = NULL;
-		if (s->owner->streamid > -1)
-			ast_sched_del(s->owner->sched, s->owner->streamid);
-		s->owner->streamid = -1;
-	}
 	ast_pthread_mutex_unlock(&gsm_lock);
 	ast_update_use_count();
-	if (!tmp) 
-		ast_log(LOG_WARNING, "Freeing a filestream we don't seem to own\n");
 	close(s->fd);
 	free(s);
-	s = NULL;
 }
 
-static int ast_read_callback(void *data)
+static struct ast_frame *gsm_read(struct ast_filestream *s, int *whennext)
 {
-	int retval = 0;
 	int res;
-	int delay = 20;
-	struct ast_filestream *s = data;
-	struct timeval tv;
-	/* Send a frame from the file to the appropriate channel */
-
 	s->fr.frametype = AST_FRAME_VOICE;
 	s->fr.subclass = AST_FORMAT_GSM;
 	s->fr.offset = AST_FRIENDLY_OFFSET;
@@ -179,57 +132,10 @@ static int ast_read_callback(void *data)
 	if ((res = read(s->fd, s->gsm, 33)) != 33) {
 		if (res)
 			ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
-		s->owner->streamid = -1;
-		return 0;
-	}
-	/* Lastly, process the frame */
-	if (ast_write(s->owner, &s->fr)) {
-		ast_log(LOG_WARNING, "Failed to write frame\n");
-		s->owner->streamid = -1;
-		return 0;
-	}
-	if (s->last.tv_usec || s->last.tv_usec) {
-		int ms;
-		gettimeofday(&tv, NULL);
-		ms = 1000 * (tv.tv_sec - s->last.tv_sec) + 
-			(tv.tv_usec - s->last.tv_usec) / 1000;
-		s->last.tv_sec = tv.tv_sec;
-		s->last.tv_usec = tv.tv_usec;
-		if ((ms - delay) * (ms - delay) > 4) {
-			/* Compensate if we're more than 2 ms off */
-			s->adj -= (ms - delay);
-		}
-#if 0
-		fprintf(stdout, "Delay is %d, adjustment is %d, last was %d\n", delay, s->adj, ms);
-#endif
-		delay += s->adj;
-		if (delay < 1)
-			delay = 1;
-	} else
-		gettimeofday(&s->last, NULL);
-	if (s->lasttimeout != delay) {
-		/* We'll install the next timeout now. */
-		s->owner->streamid = ast_sched_add(s->owner->sched,
-				delay, ast_read_callback, s); 
-		s->lasttimeout = delay;
-	} else {
-		/* Just come back again at the same time */
-		retval = -1;
+		return NULL;
 	}
-	return retval;
-}
-
-static int gsm_apply(struct ast_channel *c, struct ast_filestream *s)
-{
-	/* Select our owner for this stream, and get the ball rolling. */
-	s->owner = c;
-	return 0;
-}
-
-static int gsm_play(struct ast_filestream *s)
-{
-	ast_read_callback(s);
-	return 0;
+	*whennext = 160;
+	return &s->fr;
 }
 
 static int gsm_write(struct ast_filestream *fs, struct ast_frame *f)
@@ -310,8 +216,6 @@ int load_module()
 	return ast_format_register(name, exts, AST_FORMAT_GSM,
 								gsm_open,
 								gsm_rewrite,
-								gsm_apply,
-								gsm_play,
 								gsm_write,
 								gsm_seek,
 								gsm_trunc,
@@ -325,20 +229,6 @@ int load_module()
 
 int unload_module()
 {
-	struct ast_filestream *tmp, *tmpl;
-	if (ast_pthread_mutex_lock(&gsm_lock)) {
-		ast_log(LOG_WARNING, "Unable to lock gsm list\n");
-		return -1;
-	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp->owner)
-			ast_softhangup(tmp->owner, AST_SOFTHANGUP_APPUNLOAD);
-		tmpl = tmp;
-		tmp = tmp->next;
-		free(tmpl);
-	}
-	ast_pthread_mutex_unlock(&gsm_lock);
 	return ast_format_unregister(name);
 }	
 
diff --git a/formats/format_mp3.c b/formats/format_mp3.c
index e702e5563..7f6b6992c 100755
--- a/formats/format_mp3.c
+++ b/formats/format_mp3.c
@@ -34,14 +34,10 @@ struct ast_filestream {
 	void *reserved[AST_RESERVED_POINTERS];
 	/* This is what a filestream means to us */
 	int fd; /* Descriptor */
-	struct ast_channel *owner;
-	struct ast_filestream *next;
 	struct ast_frame fr;	/* Frame representation of buf */
 	char offset[AST_FRIENDLY_OFFSET];
 	unsigned char buf[MAX_FRAME_SIZE * 2];
-	int lasttimeout;
 	int pos;
-	int adj;
 	struct timeval last;
 };
 
@@ -68,14 +64,9 @@ static struct ast_filestream *mp3_open(int fd)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
-		tmp->lasttimeout = -1;
 		tmp->last.tv_usec = 0;
 		tmp->last.tv_sec = 0;
-		tmp->adj = 0;
 		glistcnt++;
 		ast_pthread_mutex_unlock(&mp3_lock);
 		ast_update_use_count();
@@ -95,10 +86,7 @@ static struct ast_filestream *mp3_rewrite(int fd, char *comment)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
 		glistcnt++;
 		ast_pthread_mutex_unlock(&mp3_lock);
 		ast_update_use_count();
@@ -107,71 +95,40 @@ static struct ast_filestream *mp3_rewrite(int fd, char *comment)
 	return tmp;
 }
 
-static struct ast_frame *mp3_read(struct ast_filestream *s)
-{
-	return NULL;
-}
-
 static void mp3_close(struct ast_filestream *s)
 {
-	struct ast_filestream *tmp, *tmpl = NULL;
 	if (ast_pthread_mutex_lock(&mp3_lock)) {
 		ast_log(LOG_WARNING, "Unable to lock mp3 list\n");
 		return;
 	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp == s) {
-			if (tmpl)
-				tmpl->next = tmp->next;
-			else
-				glist = tmp->next;
-			break;
-		}
-		tmpl = tmp;
-		tmp = tmp->next;
-	}
 	glistcnt--;
-	if (s->owner) {
-		s->owner->stream = NULL;
-		if (s->owner->streamid > -1)
-			ast_sched_del(s->owner->sched, s->owner->streamid);
-		s->owner->streamid = -1;
-	}
 	ast_pthread_mutex_unlock(&mp3_lock);
 	ast_update_use_count();
-	if (!tmp) 
-		ast_log(LOG_WARNING, "Freeing a filestream we don't seem to own\n");
 	close(s->fd);
 	free(s);
 }
 
-static int ast_read_callback(void *data)
+static struct ast_frame *mp3_read(struct ast_filestream *s, int *whennext)
 {
 	/* XXX Don't assume frames are this size XXX */
 	u_int32_t delay = -1;
 	int res;
-	struct ast_filestream *s = data;
 	int size;
-	int ms=0;
-	struct timeval tv;
 	if ((res = read(s->fd, s->buf , 4)) != 4) {
 		ast_log(LOG_WARNING, "Short read (%d of 4 bytes) (%s)!\n", res, strerror(errno));
-		s->owner->streamid = -1;
-		return 0;
+		return NULL;
 	}
 	if (mp3_badheader(s->buf)) {
 		ast_log(LOG_WARNING, "Bad mp3 header\n");
-		return 0;
+		return NULL;
 	}
 	if ((size = mp3_framelen(s->buf)) < 0) {
 		ast_log(LOG_WARNING, "Unable to calculate frame size\n");
-		return 0;
+		return NULL;
 	}
 	if ((res = read(s->fd, s->buf + 4 , size - 4)) != size - 4) {
 		ast_log(LOG_WARNING, "Short read (%d of %d bytes) (%s)!\n", res, size - 4, strerror(errno));
-		s->owner->streamid = -1;
-		return 0;
+		return NULL;
 	}
 	/* Send a frame from the file to the appropriate channel */
 	/* Read the data into the buffer */
@@ -183,48 +140,15 @@ static int ast_read_callback(void *data)
 	s->fr.datalen = size;
 	s->fr.data = s->buf;
 	delay = mp3_samples(s->buf) * 1000 / mp3_samplerate(s->buf);
-	if (s->last.tv_sec || s->last.tv_usec) {
-		/* To keep things running smoothly, we watch how close we're coming */
-		gettimeofday(&tv, NULL);
-		ms = ((tv.tv_usec - s->last.tv_usec) / 1000 + (tv.tv_sec - s->last.tv_sec) * 1000);
-		/* If we're within 2 milliseconds, that's close enough */
-		if ((ms - delay) > 0 )
-			s->adj -= (ms - delay);
-		s->adj -= 2;
-	}
 	s->fr.samples = delay * 8;
 #if 0
 	ast_log(LOG_DEBUG, "delay is %d, adjusting by %d, as last was %d\n", delay, s->adj, ms);
 #endif
-	delay += s->adj;
+	delay *= 8;
 	if (delay < 1)
 		delay = 1;
-	/* Lastly, process the frame */
-	if (ast_write(s->owner, &s->fr)) {
-		ast_log(LOG_WARNING, "Failed to write frame\n");
-		s->owner->streamid = -1;
-		return 0;
-	}
-	gettimeofday(&s->last, NULL);
-	if (s->lasttimeout != delay) {
-		s->owner->streamid = ast_sched_add(s->owner->sched, delay, ast_read_callback, s);
-		s->lasttimeout = delay;
-		return 0;
-	}
-	return -1;
-}
-
-static int mp3_apply(struct ast_channel *c, struct ast_filestream *s)
-{
-	/* Select our owner for this stream, and get the ball rolling. */
-	s->owner = c;
-	return 0;
-}
-
-static int mp3_play(struct ast_filestream *s)
-{
-	ast_read_callback(s);
-	return 0;
+	*whennext = delay;
+	return &s->fr;
 }
 
 static int mp3_write(struct ast_filestream *fs, struct ast_frame *f)
@@ -270,8 +194,6 @@ int load_module()
 	return ast_format_register(name, exts, AST_FORMAT_MP3,
 								mp3_open,
 								mp3_rewrite,
-								mp3_apply,
-								mp3_play,
 								mp3_write,
 								mp3_seek,
 								mp3_trunc,
@@ -285,20 +207,6 @@ int load_module()
 
 int unload_module()
 {
-	struct ast_filestream *tmp, *tmpl;
-	if (ast_pthread_mutex_lock(&mp3_lock)) {
-		ast_log(LOG_WARNING, "Unable to lock mp3 list\n");
-		return -1;
-	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp->owner)
-			ast_softhangup(tmp->owner, AST_SOFTHANGUP_APPUNLOAD);
-		tmpl = tmp;
-		tmp = tmp->next;
-		free(tmpl);
-	}
-	ast_pthread_mutex_unlock(&mp3_lock);
 	return ast_format_unregister(name);
 }	
 
diff --git a/formats/format_pcm.c b/formats/format_pcm.c
index 14931dfdf..fe384ca5f 100755
--- a/formats/format_pcm.c
+++ b/formats/format_pcm.c
@@ -35,8 +35,6 @@
 
 struct ast_filestream {
 	void *reserved[AST_RESERVED_POINTERS];
-	/* Believe it or not, we must decode/recode to account for the
-	   weird MS format */
 	/* This is what a filestream means to us */
 	int fd; /* Descriptor */
 	struct ast_channel *owner;
@@ -44,14 +42,10 @@ struct ast_filestream {
 	char waste[AST_FRIENDLY_OFFSET];	/* Buffer for sending frames, etc */
 	char empty;							/* Empty character */
 	unsigned char buf[BUF_SIZE];				/* Output Buffer */
-	int lasttimeout;
 	struct timeval last;
-	int adj;
-	struct ast_filestream *next;
 };
 
 
-static struct ast_filestream *glist = NULL;
 static pthread_mutex_t pcm_lock = AST_MUTEX_INITIALIZER;
 static int glistcnt = 0;
 
@@ -72,17 +66,13 @@ static struct ast_filestream *pcm_open(int fd)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
 		tmp->fr.data = tmp->buf;
 		tmp->fr.frametype = AST_FRAME_VOICE;
 		tmp->fr.subclass = AST_FORMAT_ULAW;
 		/* datalen will vary for each frame */
 		tmp->fr.src = name;
 		tmp->fr.mallocd = 0;
-		tmp->lasttimeout = -1;
 		glistcnt++;
 		pthread_mutex_unlock(&pcm_lock);
 		ast_update_use_count();
@@ -103,11 +93,7 @@ static struct ast_filestream *pcm_rewrite(int fd, char *comment)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
-		tmp->lasttimeout = -1;
 		glistcnt++;
 		pthread_mutex_unlock(&pcm_lock);
 		ast_update_use_count();
@@ -116,53 +102,23 @@ static struct ast_filestream *pcm_rewrite(int fd, char *comment)
 	return tmp;
 }
 
-static struct ast_frame *pcm_read(struct ast_filestream *s)
-{
-	return NULL;
-}
-
 static void pcm_close(struct ast_filestream *s)
 {
-	struct ast_filestream *tmp, *tmpl = NULL;
 	if (pthread_mutex_lock(&pcm_lock)) {
 		ast_log(LOG_WARNING, "Unable to lock pcm list\n");
 		return;
 	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp == s) {
-			if (tmpl)
-				tmpl->next = tmp->next;
-			else
-				glist = tmp->next;
-			break;
-		}
-		tmpl = tmp;
-		tmp = tmp->next;
-	}
-	glistcnt--;
-	if (s->owner) {
-		s->owner->stream = NULL;
-		if (s->owner->streamid > -1)
-			ast_sched_del(s->owner->sched, s->owner->streamid);
-		s->owner->streamid = -1;
-	}
 	pthread_mutex_unlock(&pcm_lock);
 	ast_update_use_count();
-	if (!tmp) 
-		ast_log(LOG_WARNING, "Freeing a filestream we don't seem to own\n");
 	close(s->fd);
 	free(s);
 	s = NULL;
 }
 
-static int ast_read_callback(void *data)
+static struct ast_frame *pcm_read(struct ast_filestream *s, int *whennext)
 {
-	int retval = 0;
 	int res;
 	int delay;
-	struct ast_filestream *s = data;
-	struct timeval tv;
 	/* Send a frame from the file to the appropriate channel */
 
 	s->fr.frametype = AST_FRAME_VOICE;
@@ -173,60 +129,13 @@ static int ast_read_callback(void *data)
 	if ((res = read(s->fd, s->buf, BUF_SIZE)) < 1) {
 		if (res)
 			ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
-		s->owner->streamid = -1;
-		return 0;
+		return NULL;
 	}
 	s->fr.samples = res;
 	s->fr.datalen = res;
-	delay = s->fr.samples/8;
-	/* Lastly, process the frame */
-	if (ast_write(s->owner, &s->fr)) {
-		ast_log(LOG_WARNING, "Failed to write frame\n");
-		s->owner->streamid = -1;
-		return 0;
-	}
-	if (s->last.tv_usec || s->last.tv_usec) {
-		int ms;
-		gettimeofday(&tv, NULL);
-		ms = 1000 * (tv.tv_sec - s->last.tv_sec) + 
-			(tv.tv_usec - s->last.tv_usec) / 1000;
-		s->last.tv_sec = tv.tv_sec;
-		s->last.tv_usec = tv.tv_usec;
-		if ((ms - delay) * (ms - delay) > 4) {
-			/* Compensate if we're more than 2 ms off */
-			s->adj -= (ms - delay);
-		}
-#if 0
-		fprintf(stdout, "Delay is %d, adjustment is %d, last was %d\n", delay, s->adj, ms);
-#endif
-		delay += s->adj;
-		if (delay < 1)
-			delay = 1;
-	} else
-		gettimeofday(&s->last, NULL);
-	if (s->lasttimeout != delay) {
-		/* We'll install the next timeout now. */
-		s->owner->streamid = ast_sched_add(s->owner->sched,
-				delay, ast_read_callback, s); 
-		s->lasttimeout = delay;
-	} else {
-		/* Just come back again at the same time */
-		retval = -1;
-	}
-	return retval;
-}
-
-static int pcm_apply(struct ast_channel *c, struct ast_filestream *s)
-{
-	/* Select our owner for this stream, and get the ball rolling. */
-	s->owner = c;
-	return 0;
-}
-
-static int pcm_play(struct ast_filestream *s)
-{
-	ast_read_callback(s);
-	return 0;
+	delay = s->fr.samples;
+	*whennext = delay;
+	return &s->fr;
 }
 
 static int pcm_write(struct ast_filestream *fs, struct ast_frame *f)
@@ -287,8 +196,6 @@ int load_module()
 	return ast_format_register(name, exts, AST_FORMAT_ULAW,
 								pcm_open,
 								pcm_rewrite,
-								pcm_apply,
-								pcm_play,
 								pcm_write,
 								pcm_seek,
 								pcm_trunc,
@@ -302,20 +209,6 @@ int load_module()
 
 int unload_module()
 {
-	struct ast_filestream *tmp, *tmpl;
-	if (pthread_mutex_lock(&pcm_lock)) {
-		ast_log(LOG_WARNING, "Unable to lock pcm list\n");
-		return -1;
-	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp->owner)
-			ast_softhangup(tmp->owner, AST_SOFTHANGUP_APPUNLOAD);
-		tmpl = tmp;
-		tmp = tmp->next;
-		free(tmpl);
-	}
-	pthread_mutex_unlock(&pcm_lock);
 	return ast_format_unregister(name);
 }	
 
diff --git a/formats/format_pcm_alaw.c b/formats/format_pcm_alaw.c
index 9a4f66586..ef17680d7 100755
--- a/formats/format_pcm_alaw.c
+++ b/formats/format_pcm_alaw.c
@@ -43,22 +43,16 @@ struct ast_filestream {
 	   weird MS format */
 	/* This is what a filestream means to us */
 	int fd; /* Descriptor */
-	struct ast_channel *owner;
 	struct ast_frame fr;				/* Frame information */
 	char waste[AST_FRIENDLY_OFFSET];	/* Buffer for sending frames, etc */
 	char empty;							/* Empty character */
 	unsigned char buf[BUF_SIZE];				/* Output Buffer */
-	int lasttimeout;
-	struct timeval last;
 #ifdef REALTIME_WRITE
 	unsigned long start_time;
 #endif
-	int adj;
-	struct ast_filestream *next;
 };
 
 
-static struct ast_filestream *glist = NULL;
 static pthread_mutex_t pcm_lock = AST_MUTEX_INITIALIZER;
 static int glistcnt = 0;
 
@@ -95,17 +89,13 @@ static struct ast_filestream *pcm_open(int fd)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
 		tmp->fr.data = tmp->buf;
 		tmp->fr.frametype = AST_FRAME_VOICE;
 		tmp->fr.subclass = AST_FORMAT_ALAW;
 		/* datalen will vary for each frame */
 		tmp->fr.src = name;
 		tmp->fr.mallocd = 0;
-		tmp->lasttimeout = -1;
 #ifdef REALTIME_WRITE
 		tmp->start_time = get_time();
 #endif
@@ -129,11 +119,7 @@ static struct ast_filestream *pcm_rewrite(int fd, char *comment)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
-		tmp->lasttimeout = -1;
 #ifdef REALTIME_WRITE
 		tmp->start_time = get_time();
 #endif
@@ -145,53 +131,23 @@ static struct ast_filestream *pcm_rewrite(int fd, char *comment)
 	return tmp;
 }
 
-static struct ast_frame *pcm_read(struct ast_filestream *s)
-{
-	return NULL;
-}
-
 static void pcm_close(struct ast_filestream *s)
 {
-	struct ast_filestream *tmp, *tmpl = NULL;
 	if (pthread_mutex_lock(&pcm_lock)) {
 		ast_log(LOG_WARNING, "Unable to lock pcm list\n");
 		return;
 	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp == s) {
-			if (tmpl)
-				tmpl->next = tmp->next;
-			else
-				glist = tmp->next;
-			break;
-		}
-		tmpl = tmp;
-		tmp = tmp->next;
-	}
 	glistcnt--;
-	if (s->owner) {
-		s->owner->stream = NULL;
-		if (s->owner->streamid > -1)
-			ast_sched_del(s->owner->sched, s->owner->streamid);
-		s->owner->streamid = -1;
-	}
 	pthread_mutex_unlock(&pcm_lock);
 	ast_update_use_count();
-	if (!tmp) 
-		ast_log(LOG_WARNING, "Freeing a filestream we don't seem to own\n");
 	close(s->fd);
 	free(s);
 	s = NULL;
 }
 
-static int ast_read_callback(void *data)
+static struct ast_frame *pcm_read(struct ast_filestream *s, int *whennext)
 {
-	int retval = 0;
 	int res;
-	int delay;
-	struct ast_filestream *s = data;
-	struct timeval tv;
 	/* Send a frame from the file to the appropriate channel */
 
 	s->fr.frametype = AST_FRAME_VOICE;
@@ -202,60 +158,12 @@ static int ast_read_callback(void *data)
 	if ((res = read(s->fd, s->buf, BUF_SIZE)) < 1) {
 		if (res)
 			ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
-		s->owner->streamid = -1;
-		return 0;
+		return NULL;
 	}
 	s->fr.samples = res;
 	s->fr.datalen = res;
-	delay = s->fr.samples/8;
-	/* Lastly, process the frame */
-	if (ast_write(s->owner, &s->fr)) {
-		ast_log(LOG_WARNING, "Failed to write frame\n");
-		s->owner->streamid = -1;
-		return 0;
-	}
-	if (s->last.tv_usec || s->last.tv_usec) {
-		int ms;
-		gettimeofday(&tv, NULL);
-		ms = 1000 * (tv.tv_sec - s->last.tv_sec) + 
-			(tv.tv_usec - s->last.tv_usec) / 1000;
-		s->last.tv_sec = tv.tv_sec;
-		s->last.tv_usec = tv.tv_usec;
-		if ((ms - delay) * (ms - delay) > 4) {
-			/* Compensate if we're more than 2 ms off */
-			s->adj -= (ms - delay);
-		}
-#if 0
-		fprintf(stdout, "Delay is %d, adjustment is %d, last was %d\n", delay, s->adj, ms);
-#endif
-		delay += s->adj;
-		if (delay < 1)
-			delay = 1;
-	} else
-		gettimeofday(&s->last, NULL);
-	if (s->lasttimeout != delay) {
-		/* We'll install the next timeout now. */
-		s->owner->streamid = ast_sched_add(s->owner->sched,
-				delay, ast_read_callback, s); 
-		s->lasttimeout = delay;
-	} else {
-		/* Just come back again at the same time */
-		retval = -1;
-	}
-	return retval;
-}
-
-static int pcm_apply(struct ast_channel *c, struct ast_filestream *s)
-{
-	/* Select our owner for this stream, and get the ball rolling. */
-	s->owner = c;
-	return 0;
-}
-
-static int pcm_play(struct ast_filestream *s)
-{
-	ast_read_callback(s);
-	return 0;
+	*whennext = s->fr.samples;
+	return &s->fr;
 }
 
 static int pcm_write(struct ast_filestream *fs, struct ast_frame *f)
@@ -368,8 +276,6 @@ int load_module()
 	return ast_format_register(name, exts, AST_FORMAT_ALAW,
 								pcm_open,
 								pcm_rewrite,
-								pcm_apply,
-								pcm_play,
 								pcm_write,
 								pcm_seek,
 								pcm_trunc,
@@ -381,20 +287,6 @@ int load_module()
 
 int unload_module()
 {
-	struct ast_filestream *tmp, *tmpl;
-	if (pthread_mutex_lock(&pcm_lock)) {
-		ast_log(LOG_WARNING, "Unable to lock pcm list\n");
-		return -1;
-	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp->owner)
-			ast_softhangup(tmp->owner, AST_SOFTHANGUP_APPUNLOAD);
-		tmpl = tmp;
-		tmp = tmp->next;
-		free(tmpl);
-	}
-	pthread_mutex_unlock(&pcm_lock);
 	return ast_format_unregister(name);
 }	
 
diff --git a/formats/format_vox.c b/formats/format_vox.c
index 3848f47c0..095ca1703 100755
--- a/formats/format_vox.c
+++ b/formats/format_vox.c
@@ -35,21 +35,16 @@
 
 struct ast_filestream {
 	void *reserved[AST_RESERVED_POINTERS];
-	/* Believe it or not, we must decode/recode to account for the
-	   weird MS format */
 	/* This is what a filestream means to us */
 	int fd; /* Descriptor */
-	struct ast_channel *owner;
 	struct ast_frame fr;				/* Frame information */
 	char waste[AST_FRIENDLY_OFFSET];	/* Buffer for sending frames, etc */
 	char empty;							/* Empty character */
 	unsigned char buf[BUF_SIZE + 3];				/* Output Buffer */
 	int lasttimeout;
 	struct timeval last;
-	int adj;
 	short signal;						/* Signal level (file side) */
 	short ssindex;						/* Signal ssindex (file side) */
-	struct ast_filestream *next;
 };
 
 
@@ -182,10 +177,7 @@ static struct ast_filestream *vox_open(int fd)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
 		tmp->fr.data = tmp->buf;
 		tmp->fr.frametype = AST_FRAME_VOICE;
 		tmp->fr.subclass = AST_FORMAT_ADPCM;
@@ -213,11 +205,7 @@ static struct ast_filestream *vox_rewrite(int fd, char *comment)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
-		tmp->lasttimeout = -1;
 		glistcnt++;
 		ast_pthread_mutex_unlock(&vox_lock);
 		ast_update_use_count();
@@ -226,53 +214,23 @@ static struct ast_filestream *vox_rewrite(int fd, char *comment)
 	return tmp;
 }
 
-static struct ast_frame *vox_read(struct ast_filestream *s)
-{
-	return NULL;
-}
-
 static void vox_close(struct ast_filestream *s)
 {
-	struct ast_filestream *tmp, *tmpl = NULL;
 	if (ast_pthread_mutex_lock(&vox_lock)) {
 		ast_log(LOG_WARNING, "Unable to lock vox list\n");
 		return;
 	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp == s) {
-			if (tmpl)
-				tmpl->next = tmp->next;
-			else
-				glist = tmp->next;
-			break;
-		}
-		tmpl = tmp;
-		tmp = tmp->next;
-	}
 	glistcnt--;
-	if (s->owner) {
-		s->owner->stream = NULL;
-		if (s->owner->streamid > -1)
-			ast_sched_del(s->owner->sched, s->owner->streamid);
-		s->owner->streamid = -1;
-	}
 	ast_pthread_mutex_unlock(&vox_lock);
 	ast_update_use_count();
-	if (!tmp) 
-		ast_log(LOG_WARNING, "Freeing a filestream we don't seem to own\n");
 	close(s->fd);
 	free(s);
 	s = NULL;
 }
 
-static int ast_read_callback(void *data)
+static struct ast_frame *vox_read(struct ast_filestream *s, int *whennext)
 {
-	int retval = 0;
 	int res;
-	int delay;
-	struct ast_filestream *s = data;
-	struct timeval tv;
 	int x;
 	/* Send a frame from the file to the appropriate channel */
 
@@ -284,8 +242,7 @@ static int ast_read_callback(void *data)
 	if ((res = read(s->fd, s->buf + 3, BUF_SIZE)) < 1) {
 		if (res)
 			ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
-		s->owner->streamid = -1;
-		return 0;
+		return NULL;
 	}
 	/* Store index, then signal */
 	s->buf[0] = s->ssindex & 0xff;
@@ -298,55 +255,8 @@ static int ast_read_callback(void *data)
 	}
 	s->fr.samples = res * 2;
 	s->fr.datalen = res + 3;
-	delay = s->fr.samples / 8;
-	/* Lastly, process the frame */
-	if (ast_write(s->owner, &s->fr)) {
-		ast_log(LOG_WARNING, "Failed to write frame\n");
-		s->owner->streamid = -1;
-		return 0;
-	}
-	if (s->last.tv_usec || s->last.tv_usec) {
-		int ms;
-		gettimeofday(&tv, NULL);
-		ms = 1000 * (tv.tv_sec - s->last.tv_sec) + 
-			(tv.tv_usec - s->last.tv_usec) / 1000;
-		s->last.tv_sec = tv.tv_sec;
-		s->last.tv_usec = tv.tv_usec;
-		if ((ms - delay) * (ms - delay) > 4) {
-			/* Compensate if we're more than 2 ms off */
-			s->adj -= (ms - delay);
-		}
-#if 0
-		fprintf(stdout, "Delay is %d, adjustment is %d, last was %d\n", delay, s->adj, ms);
-#endif
-		delay += s->adj;
-		if (delay < 1)
-			delay = 1;
-	} else
-		gettimeofday(&s->last, NULL);
-	if (s->lasttimeout != delay) {
-		/* We'll install the next timeout now. */
-		s->owner->streamid = ast_sched_add(s->owner->sched,
-				delay, ast_read_callback, s); 
-		s->lasttimeout = delay;
-	} else {
-		/* Just come back again at the same time */
-		retval = -1;
-	}
-	return retval;
-}
-
-static int vox_apply(struct ast_channel *c, struct ast_filestream *s)
-{
-	/* Select our owner for this stream, and get the ball rolling. */
-	s->owner = c;
-	return 0;
-}
-
-static int vox_play(struct ast_filestream *s)
-{
-	ast_read_callback(s);
-	return 0;
+	*whennext = s->fr.samples;
+	return &s->fr;
 }
 
 static int vox_write(struct ast_filestream *fs, struct ast_frame *f)
@@ -396,8 +306,6 @@ int load_module()
 	return ast_format_register(name, exts, AST_FORMAT_ADPCM,
 								vox_open,
 								vox_rewrite,
-								vox_apply,
-								vox_play,
 								vox_write,
 								vox_seek,
 								vox_trunc,
@@ -411,20 +319,6 @@ int load_module()
 
 int unload_module()
 {
-	struct ast_filestream *tmp, *tmpl;
-	if (ast_pthread_mutex_lock(&vox_lock)) {
-		ast_log(LOG_WARNING, "Unable to lock vox list\n");
-		return -1;
-	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp->owner)
-			ast_softhangup(tmp->owner, AST_SOFTHANGUP_APPUNLOAD);
-		tmpl = tmp;
-		tmp = tmp->next;
-		free(tmpl);
-	}
-	ast_pthread_mutex_unlock(&vox_lock);
 	return ast_format_unregister(name);
 }	
 
diff --git a/formats/format_wav.c b/formats/format_wav.c
index 185234768..c80d47e74 100755
--- a/formats/format_wav.c
+++ b/formats/format_wav.c
@@ -41,7 +41,6 @@ struct ast_filestream {
 	int fd; /* Descriptor */
 	int bytes;
 	int needsgain;
-	struct ast_channel *owner;
 	struct ast_frame fr;				/* Frame information */
 	char waste[AST_FRIENDLY_OFFSET];	/* Buffer for sending frames, etc */
 	char empty;							/* Empty character */
@@ -50,12 +49,9 @@ struct ast_filestream {
 	int lasttimeout;
 	int maxlen;
 	struct timeval last;
-	int adj;
-	struct ast_filestream *next;
 };
 
 
-static struct ast_filestream *glist = NULL;
 static pthread_mutex_t wav_lock = AST_MUTEX_INITIALIZER;
 static int glistcnt = 0;
 
@@ -321,10 +317,7 @@ static struct ast_filestream *wav_open(int fd)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
 		tmp->needsgain = 1;
 		tmp->fr.data = tmp->buf;
 		tmp->fr.frametype = AST_FRAME_VOICE;
@@ -332,7 +325,6 @@ static struct ast_filestream *wav_open(int fd)
 		/* datalen will vary for each frame */
 		tmp->fr.src = name;
 		tmp->fr.mallocd = 0;
-		tmp->lasttimeout = -1;
 		tmp->bytes = 0;
 		glistcnt++;
 		ast_pthread_mutex_unlock(&wav_lock);
@@ -358,11 +350,7 @@ static struct ast_filestream *wav_rewrite(int fd, char *comment)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
-		tmp->lasttimeout = -1;
 		glistcnt++;
 		ast_pthread_mutex_unlock(&wav_lock);
 		ast_update_use_count();
@@ -371,60 +359,29 @@ static struct ast_filestream *wav_rewrite(int fd, char *comment)
 	return tmp;
 }
 
-static struct ast_frame *wav_read(struct ast_filestream *s)
-{
-	return NULL;
-}
-
 static void wav_close(struct ast_filestream *s)
 {
-	struct ast_filestream *tmp, *tmpl = NULL;
 	char zero = 0;
 	if (ast_pthread_mutex_lock(&wav_lock)) {
 		ast_log(LOG_WARNING, "Unable to lock wav list\n");
 		return;
 	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp == s) {
-			if (tmpl)
-				tmpl->next = tmp->next;
-			else
-				glist = tmp->next;
-			break;
-		}
-		tmpl = tmp;
-		tmp = tmp->next;
-	}
 	glistcnt--;
-	if (s->owner) {
-		s->owner->stream = NULL;
-		if (s->owner->streamid > -1)
-			ast_sched_del(s->owner->sched, s->owner->streamid);
-		s->owner->streamid = -1;
-	}
 	ast_pthread_mutex_unlock(&wav_lock);
 	ast_update_use_count();
-	if (!tmp) 
-		ast_log(LOG_WARNING, "Freeing a filestream we don't seem to own\n");
 	/* Pad to even length */
 	if (s->bytes & 0x1)
 		write(s->fd, &zero, 1);
 	close(s->fd);
 	free(s);
 	s = NULL;
-#if 0
-	printf("bytes = %d\n", s->bytes);
-#endif
 }
 
-static int ast_read_callback(void *data)
+static struct ast_frame *wav_read(struct ast_filestream *s, int *whennext)
 {
-	int retval = 0;
 	int res;
 	int delay;
 	int x;
-	struct ast_filestream *s = data;
 	short tmp[sizeof(s->buf) / 2];
 	int bytes = sizeof(tmp);
 	off_t here;
@@ -440,8 +397,7 @@ static int ast_read_callback(void *data)
 		if (res) {
 			ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
 		}
-		s->owner->streamid = -1;
-		return 0;
+		return NULL;
 	}
 
 #if __BYTE_ORDER == __BIG_ENDIAN
@@ -472,36 +428,8 @@ static int ast_read_callback(void *data)
 	s->fr.data = s->buf;
 	s->fr.mallocd = 0;
 	s->fr.samples = delay;
-	delay /= 8;
-	/* Lastly, process the frame */	
-	if (delay != s->lasttimeout) {
-		s->owner->streamid = ast_sched_add(s->owner->sched, delay, ast_read_callback, s);
-		s->lasttimeout = delay;
-	} else {
-		retval = -1;
-	}
-	
-	
-	if (ast_write(s->owner, &s->fr)) {
-		ast_log(LOG_WARNING, "Failed to write frame\n");
-		s->owner->streamid = -1;
-		return 0;
-	}
-	
-	return retval;
-}
-
-static int wav_apply(struct ast_channel *c, struct ast_filestream *s)
-{
-	/* Select our owner for this stream, and get the ball rolling. */
-	s->owner = c;
-	return 0;
-}
-
-static int wav_play(struct ast_filestream *s)
-{
-	ast_read_callback(s);
-	return 0;
+	*whennext = delay;
+	return &s->fr;
 }
 
 static int wav_write(struct ast_filestream *fs, struct ast_frame *f)
@@ -607,8 +535,6 @@ int load_module()
 	return ast_format_register(name, exts, AST_FORMAT_SLINEAR,
 								wav_open,
 								wav_rewrite,
-								wav_apply,
-								wav_play,
 								wav_write,
 								wav_seek,
 								wav_trunc,
@@ -622,20 +548,6 @@ int load_module()
 
 int unload_module()
 {
-	struct ast_filestream *tmp, *tmpl;
-	if (ast_pthread_mutex_lock(&wav_lock)) {
-		ast_log(LOG_WARNING, "Unable to lock wav list\n");
-		return -1;
-	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp->owner)
-			ast_softhangup(tmp->owner, AST_SOFTHANGUP_APPUNLOAD);
-		tmpl = tmp;
-		tmp = tmp->next;
-		free(tmpl);
-	}
-	ast_pthread_mutex_unlock(&wav_lock);
 	return ast_format_unregister(name);
 }	
 
diff --git a/formats/format_wav_gsm.c b/formats/format_wav_gsm.c
index 06275402f..a9a1e8313 100755
--- a/formats/format_wav_gsm.c
+++ b/formats/format_wav_gsm.c
@@ -43,21 +43,16 @@ struct ast_filestream {
 	/* This is what a filestream means to us */
 	int fd; /* Descriptor */
 	int bytes;
-	struct ast_channel *owner;
 	struct ast_frame fr;				/* Frame information */
 	char waste[AST_FRIENDLY_OFFSET];	/* Buffer for sending frames, etc */
 	char empty;							/* Empty character */
 	unsigned char gsm[66];				/* Two Real GSM Frames */
 	int foffset;
 	int secondhalf;						/* Are we on the second half */
-	int lasttimeout;
 	struct timeval last;
-	int adj;
-	struct ast_filestream *next;
 };
 
 
-static struct ast_filestream *glist = NULL;
 static pthread_mutex_t wav_lock = AST_MUTEX_INITIALIZER;
 static int glistcnt = 0;
 
@@ -341,10 +336,7 @@ static struct ast_filestream *wav_open(int fd)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
 		tmp->fr.data = tmp->gsm;
 		tmp->fr.frametype = AST_FRAME_VOICE;
 		tmp->fr.subclass = AST_FORMAT_GSM;
@@ -352,7 +344,6 @@ static struct ast_filestream *wav_open(int fd)
 		tmp->fr.src = name;
 		tmp->fr.mallocd = 0;
 		tmp->secondhalf = 0;
-		tmp->lasttimeout = -1;
 		glistcnt++;
 		ast_pthread_mutex_unlock(&wav_lock);
 		ast_update_use_count();
@@ -377,11 +368,7 @@ static struct ast_filestream *wav_rewrite(int fd, char *comment)
 			free(tmp);
 			return NULL;
 		}
-		tmp->next = glist;
-		glist = tmp;
 		tmp->fd = fd;
-		tmp->owner = NULL;
-		tmp->lasttimeout = -1;
 		glistcnt++;
 		ast_pthread_mutex_unlock(&wav_lock);
 		ast_update_use_count();
@@ -390,42 +377,11 @@ static struct ast_filestream *wav_rewrite(int fd, char *comment)
 	return tmp;
 }
 
-static struct ast_frame *wav_read(struct ast_filestream *s)
-{
-	return NULL;
-}
-
 static void wav_close(struct ast_filestream *s)
 {
-	struct ast_filestream *tmp, *tmpl = NULL;
 	char zero = 0;
-	if (ast_pthread_mutex_lock(&wav_lock)) {
-		ast_log(LOG_WARNING, "Unable to lock wav list\n");
-		return;
-	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp == s) {
-			if (tmpl)
-				tmpl->next = tmp->next;
-			else
-				glist = tmp->next;
-			break;
-		}
-		tmpl = tmp;
-		tmp = tmp->next;
-	}
-	glistcnt--;
-	if (s->owner) {
-		s->owner->stream = NULL;
-		if (s->owner->streamid > -1)
-			ast_sched_del(s->owner->sched, s->owner->streamid);
-		s->owner->streamid = -1;
-	}
 	ast_pthread_mutex_unlock(&wav_lock);
 	ast_update_use_count();
-	if (!tmp) 
-		ast_log(LOG_WARNING, "Freeing a filestream we don't seem to own\n");
 	/* Pad to even length */
 	if (s->bytes & 0x1)
 		write(s->fd, &zero, 1);
@@ -434,14 +390,10 @@ static void wav_close(struct ast_filestream *s)
 	s = NULL;
 }
 
-static int ast_read_callback(void *data)
+static struct ast_frame *wav_read(struct ast_filestream *s, int *whennext)
 {
-	int retval = 0;
 	int res;
-	int delay = 20;
-	struct ast_filestream *s = data;
 	char msdata[66];
-	struct timeval tv;
 	/* Send a frame from the file to the appropriate channel */
 
 	s->fr.frametype = AST_FRAME_VOICE;
@@ -457,62 +409,15 @@ static int ast_read_callback(void *data)
 		if ((res = read(s->fd, msdata, 65)) != 65) {
 			if (res && (res != 1))
 				ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
-			s->owner->streamid = -1;
-			return 0;
+			return NULL;
 		}
 		/* Convert from MS format to two real GSM frames */
 		conv65(msdata, s->gsm);
 		s->fr.data = s->gsm;
 	}
 	s->secondhalf = !s->secondhalf;
-	/* Lastly, process the frame */
-	if (ast_write(s->owner, &s->fr)) {
-		ast_log(LOG_WARNING, "Failed to write frame\n");
-		s->owner->streamid = -1;
-		return 0;
-	}
-	if (s->last.tv_usec || s->last.tv_usec) {
-		int ms;
-		gettimeofday(&tv, NULL);
-		ms = 1000 * (tv.tv_sec - s->last.tv_sec) + 
-			(tv.tv_usec - s->last.tv_usec) / 1000;
-		s->last.tv_sec = tv.tv_sec;
-		s->last.tv_usec = tv.tv_usec;
-		if ((ms - delay) * (ms - delay) > 4) {
-			/* Compensate if we're more than 2 ms off */
-			s->adj -= (ms - delay);
-		}
-#if 0
-		fprintf(stdout, "Delay is %d, adjustment is %d, last was %d\n", delay, s->adj, ms);
-#endif
-		delay += s->adj;
-		if (delay < 1)
-			delay = 1;
-	} else
-		gettimeofday(&s->last, NULL);
-	if (s->lasttimeout != delay) {
-		/* We'll install the next timeout now. */
-		s->owner->streamid = ast_sched_add(s->owner->sched,
-				delay, ast_read_callback, s); 
-		s->lasttimeout = delay;
-	} else {
-		/* Just come back again at the same time */
-		retval = -1;
-	}
-	return retval;
-}
-
-static int wav_apply(struct ast_channel *c, struct ast_filestream *s)
-{
-	/* Select our owner for this stream, and get the ball rolling. */
-	s->owner = c;
-	return 0;
-}
-
-static int wav_play(struct ast_filestream *s)
-{
-	ast_read_callback(s);
-	return 0;
+	*whennext = 160;
+	return &s->fr;
 }
 
 static int wav_write(struct ast_filestream *fs, struct ast_frame *f)
@@ -609,8 +514,6 @@ int load_module()
 	return ast_format_register(name, exts, AST_FORMAT_GSM,
 								wav_open,
 								wav_rewrite,
-								wav_apply,
-								wav_play,
 								wav_write,
 								wav_seek,
 								wav_trunc,
@@ -624,20 +527,6 @@ int load_module()
 
 int unload_module()
 {
-	struct ast_filestream *tmp, *tmpl;
-	if (ast_pthread_mutex_lock(&wav_lock)) {
-		ast_log(LOG_WARNING, "Unable to lock wav list\n");
-		return -1;
-	}
-	tmp = glist;
-	while(tmp) {
-		if (tmp->owner)
-			ast_softhangup(tmp->owner, AST_SOFTHANGUP_APPUNLOAD);
-		tmpl = tmp;
-		tmp = tmp->next;
-		free(tmpl);
-	}
-	ast_pthread_mutex_unlock(&wav_lock);
 	return ast_format_unregister(name);
 }