Fix iLBC with valgrind, add iLBC format from bkw_

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@2740 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 253 insertions, 0 deletions

diff --git a/formats/format_ilbc.c b/formats/format_ilbc.c
new file mode 100755
index 000000000..41ec40adc
--- /dev/null
+++ b/formats/format_ilbc.c
@@ -0,0 +1,253 @@
+/*
+ * Asterisk -- A telephony toolkit for Linux.
+ *
+ * Save to raw, headerless iLBC data.
+ *
+ * Brian K. West <brian@bkw.org>
+ * 
+ * Copyright (C) 1999, Mark Spencer
+ *
+ * Mark Spencer <markster@linux-support.net>
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License
+ */
+ 
+#include <asterisk/lock.h>
+#include <asterisk/channel.h>
+#include <asterisk/file.h>
+#include <asterisk/logger.h>
+#include <asterisk/sched.h>
+#include <asterisk/module.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <stdlib.h>
+#include <sys/time.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+#include <pthread.h>
+#ifdef __linux__
+#include <endian.h>
+#else
+#include <machine/endian.h>
+#endif
+
+/* Some Ideas for this code came from makeg729e.c by Jeffrey Chilton */
+
+/* Portions of the conversion code are by guido@sienanet.it */
+
+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_frame fr;				/* Frame information */
+	char waste[AST_FRIENDLY_OFFSET];	/* Buffer for sending frames, etc */
+	char empty;							/* Empty character */
+	unsigned char ilbc[50];				/* Two Real Speex Frames */
+};
+
+
+static ast_mutex_t ilbc_lock = AST_MUTEX_INITIALIZER;
+static int glistcnt = 0;
+
+static char *name = "iLBC";
+static char *desc = "Raw iLBC data";
+static char *exts = "ilbc";
+
+static struct ast_filestream *ilbc_open(int fd)
+{
+	/* We don't have any header to read or anything really, but
+	   if we did, it would go here.  We also might want to check
+	   and be sure it's a valid file.  */
+	struct ast_filestream *tmp;
+	if ((tmp = malloc(sizeof(struct ast_filestream)))) {
+		memset(tmp, 0, sizeof(struct ast_filestream));
+		if (ast_mutex_lock(&ilbc_lock)) {
+			ast_log(LOG_WARNING, "Unable to lock ilbc list\n");
+			free(tmp);
+			return NULL;
+		}
+		tmp->fd = fd;
+		tmp->fr.data = tmp->ilbc;
+		tmp->fr.frametype = AST_FRAME_VOICE;
+		tmp->fr.subclass = AST_FORMAT_ILBC;
+		/* datalen will vary for each frame */
+		tmp->fr.src = name;
+		tmp->fr.mallocd = 0;
+		glistcnt++;
+		ast_mutex_unlock(&ilbc_lock);
+		ast_update_use_count();
+	}
+	return tmp;
+}
+
+static struct ast_filestream *ilbc_rewrite(int fd, char *comment)
+{
+	/* We don't have any header to read or anything really, but
+	   if we did, it would go here.  We also might want to check
+	   and be sure it's a valid file.  */
+	struct ast_filestream *tmp;
+	if ((tmp = malloc(sizeof(struct ast_filestream)))) {
+		memset(tmp, 0, sizeof(struct ast_filestream));
+		if (ast_mutex_lock(&ilbc_lock)) {
+			ast_log(LOG_WARNING, "Unable to lock ilbc list\n");
+			free(tmp);
+			return NULL;
+		}
+		tmp->fd = fd;
+		glistcnt++;
+		ast_mutex_unlock(&ilbc_lock);
+		ast_update_use_count();
+	} else
+		ast_log(LOG_WARNING, "Out of memory\n");
+	return tmp;
+}
+
+static void ilbc_close(struct ast_filestream *s)
+{
+	if (ast_mutex_lock(&ilbc_lock)) {
+		ast_log(LOG_WARNING, "Unable to lock ilbc list\n");
+		return;
+	}
+	glistcnt--;
+	ast_mutex_unlock(&ilbc_lock);
+	ast_update_use_count();
+	close(s->fd);
+	free(s);
+	s = NULL;
+}
+
+static struct ast_frame *ilbc_read(struct ast_filestream *s, int *whennext)
+{
+	int res;
+	/* Send a frame from the file to the appropriate channel */
+	s->fr.frametype = AST_FRAME_VOICE;
+	s->fr.subclass = AST_FORMAT_ILBC;
+	s->fr.offset = AST_FRIENDLY_OFFSET;
+	s->fr.samples = 240;
+	s->fr.datalen = 50;
+	s->fr.mallocd = 0;
+	s->fr.data = s->ilbc;
+	if ((res = read(s->fd, s->ilbc, 50)) != 50) {
+		if (res)
+			ast_log(LOG_WARNING, "Short read (%d) (%s)!\n", res, strerror(errno));
+		return NULL;
+	}
+	*whennext = s->fr.samples;
+	return &s->fr;
+}
+
+static int ilbc_write(struct ast_filestream *fs, struct ast_frame *f)
+{
+	int res;
+	if (f->frametype != AST_FRAME_VOICE) {
+		ast_log(LOG_WARNING, "Asked to write non-voice frame!\n");
+		return -1;
+	}
+	if (f->subclass != AST_FORMAT_ILBC) {
+		ast_log(LOG_WARNING, "Asked to write non-iLBC frame (%d)!\n", f->subclass);
+		return -1;
+	}
+	if (f->datalen % 50) {
+		ast_log(LOG_WARNING, "Invalid data length, %d, should be multiple of 50\n", f->datalen);
+		return -1;
+	}
+	if ((res = write(fs->fd, f->data, f->datalen)) != f->datalen) {
+			ast_log(LOG_WARNING, "Bad write (%d/23): %s\n", res, strerror(errno));
+			return -1;
+	}
+	return 0;
+}
+
+static char *ilbc_getcomment(struct ast_filestream *s)
+{
+	return NULL;
+}
+
+static int ilbc_seek(struct ast_filestream *fs, long sample_offset, int whence)
+{
+	long bytes;
+	off_t min,cur,max,offset=0;
+	min = 0;
+	cur = lseek(fs->fd, 0, SEEK_CUR);
+	max = lseek(fs->fd, 0, SEEK_END);
+	
+	bytes = 36 * (sample_offset / 240);
+	if (whence == SEEK_SET)
+		offset = bytes;
+	else if (whence == SEEK_CUR || whence == SEEK_FORCECUR)
+		offset = cur + bytes;
+	else if (whence == SEEK_END)
+		offset = max - bytes;
+	if (whence != SEEK_FORCECUR) {
+		offset = (offset > max)?max:offset;
+	}
+	// protect against seeking beyond begining.
+	offset = (offset < min)?min:offset;
+	if (lseek(fs->fd, offset, SEEK_SET) < 0)
+		return -1;
+	return 0;
+}
+
+static int ilbc_trunc(struct ast_filestream *fs)
+{
+	/* Truncate file to current length */
+	if (ftruncate(fs->fd, lseek(fs->fd, 0, SEEK_CUR)) < 0)
+		return -1;
+	return 0;
+}
+
+static long ilbc_tell(struct ast_filestream *fs)
+{
+	off_t offset;
+	offset = lseek(fs->fd, 0, SEEK_CUR);
+	return (offset/50)*240;
+}
+
+int load_module()
+{
+	return ast_format_register(name, exts, AST_FORMAT_ILBC,
+								ilbc_open,
+								ilbc_rewrite,
+								ilbc_write,
+								ilbc_seek,
+								ilbc_trunc,
+								ilbc_tell,
+								ilbc_read,
+								ilbc_close,
+								ilbc_getcomment);
+								
+								
+}
+
+int unload_module()
+{
+	return ast_format_unregister(name);
+}	
+
+int usecount()
+{
+	int res;
+	if (ast_mutex_lock(&ilbc_lock)) {
+		ast_log(LOG_WARNING, "Unable to lock ilbc list\n");
+		return -1;
+	}
+	res = glistcnt;
+	ast_mutex_unlock(&ilbc_lock);
+	return res;
+}
+
+char *description()
+{
+	return desc;
+}
+
+
+char *key()
+{
+	return ASTERISK_GPL_KEY;
+}