[asterisk-commits] dvossel: branch dvossel/fixtheworld_phase1_step3 r302165 - in /team/dvossel/f...
SVN commits to the Asterisk project
asterisk-commits at lists.digium.com
Mon Jan 17 18:20:06 CST 2011
Author: dvossel
Date: Mon Jan 17 18:20:00 2011
New Revision: 302165
URL: http://svnview.digium.com/svn/asterisk?view=rev&rev=302165
Log:
convert chan_gtalk to ast_format api
Modified:
team/dvossel/fixtheworld_phase1_step3/channels/chan_gtalk.c
team/dvossel/fixtheworld_phase1_step3/main/format_cap.c
team/dvossel/fixtheworld_phase1_step3/main/format_pref.c
Modified: team/dvossel/fixtheworld_phase1_step3/channels/chan_gtalk.c
URL: http://svnview.digium.com/svn/asterisk/team/dvossel/fixtheworld_phase1_step3/channels/chan_gtalk.c?view=diff&rev=302165&r1=302164&r2=302165
==============================================================================
--- team/dvossel/fixtheworld_phase1_step3/channels/chan_gtalk.c (original)
+++ team/dvossel/fixtheworld_phase1_step3/channels/chan_gtalk.c Mon Jan 17 18:20:00 2011
@@ -111,7 +111,6 @@
iksrule *ringrule; /*!< Rule for matching RING request */
int initiator; /*!< If we're the initiator */
int alreadygone;
- int capability;
struct ast_codec_pref prefs;
struct gtalk_candidate *theircandidates;
struct gtalk_candidate *ourcandidates;
@@ -121,8 +120,9 @@
struct ast_channel *owner; /*!< Master Channel */
struct ast_rtp_instance *rtp; /*!< RTP audio session */
struct ast_rtp_instance *vrtp; /*!< RTP video session */
- format_t jointcapability; /*!< Supported capability at both ends (codecs ) */
- format_t peercapability;
+ struct ast_format_cap *cap;
+ struct ast_format_cap *jointcap; /*!< Supported capability at both ends (codecs ) */
+ struct ast_format_cap *peercap;
struct gtalk_pvt *next; /* Next entity */
};
@@ -152,7 +152,7 @@
char context[AST_MAX_CONTEXT];
char parkinglot[AST_MAX_CONTEXT]; /*!< Parkinglot */
char accountcode[AST_MAX_ACCOUNT_CODE]; /*!< Account code */
- format_t capability;
+ struct ast_format_cap *cap;
ast_group_t callgroup; /*!< Call group */
ast_group_t pickupgroup; /*!< Pickup group */
int callingpres; /*!< Calling presentation */
@@ -169,12 +169,12 @@
static const char DEFAULT_CONTEXT[] = "default";
static const int DEFAULT_ALLOWGUEST = 1;
-static format_t global_capability = AST_FORMAT_ULAW | AST_FORMAT_ALAW | AST_FORMAT_GSM | AST_FORMAT_H263;
+static struct ast_format_cap *global_capability;
AST_MUTEX_DEFINE_STATIC(gtalklock); /*!< Protect the interface list (of gtalk_pvt's) */
/* Forward declarations */
-static struct ast_channel *gtalk_request(const char *type, format_t format, const struct ast_channel *requestor, void *data, int *cause);
+static struct ast_channel *gtalk_request(const char *type, struct ast_format_cap *cap, const struct ast_channel *requestor, void *data, int *cause);
/*static int gtalk_digit(struct ast_channel *ast, char digit, unsigned int duration);*/
static int gtalk_sendtext(struct ast_channel *ast, const char *text);
static int gtalk_digit_begin(struct ast_channel *ast, char digit);
@@ -200,10 +200,9 @@
static int gtalk_create_candidates(struct gtalk *client, struct gtalk_pvt *p, char *sid, char *from, char *to);
/*! \brief PBX interface structure for channel registration */
-static const struct ast_channel_tech gtalk_tech = {
+static struct ast_channel_tech gtalk_tech = {
.type = "Gtalk",
.description = "Gtalk Channel Driver",
- .capabilities = AST_FORMAT_AUDIO_MASK,
.requester = gtalk_request,
.send_text = gtalk_sendtext,
.send_digit_begin = gtalk_digit_begin,
@@ -247,6 +246,7 @@
static void gtalk_member_destroy(struct gtalk *obj)
{
+ obj->cap = ast_format_cap_destroy(obj->cap);
ast_free(obj);
}
@@ -282,7 +282,7 @@
}
-static int add_codec_to_answer(const struct gtalk_pvt *p, int codec, iks *dcodecs)
+static int add_codec_to_answer(const struct gtalk_pvt *p, struct ast_format *codec, iks *dcodecs)
{
int res = 0;
char *format = ast_getformatname(codec);
@@ -392,17 +392,17 @@
struct gtalk *client = p->parent;
iks *iq, *gtalk, *dcodecs, *payload_telephone, *transport;
int x;
- int pref_codec = 0;
- int alreadysent = 0;
+ struct ast_format_cap *alreadysent;
int codecs_num = 0;
char *lowerto = NULL;
+ struct ast_format tmpfmt;
iq = iks_new("iq");
gtalk = iks_new("session");
dcodecs = iks_new("description");
transport = iks_new("transport");
payload_telephone = iks_new("payload-type");
- if (!(iq && gtalk && dcodecs && transport && payload_telephone)){
+ if (!(iq && gtalk && dcodecs && transport && payload_telephone)) {
iks_delete(iq);
iks_delete(gtalk);
iks_delete(dcodecs);
@@ -415,16 +415,23 @@
iks_insert_attrib(dcodecs, "xmlns", GOOGLE_AUDIO_NS);
iks_insert_attrib(dcodecs, "xml:lang", "en");
- for (x = 0; x < 64; x++) {
- if (!(pref_codec = ast_codec_pref_index(&client->prefs, x)))
+ if (!(alreadysent = ast_format_cap_alloc())) {
+ return 0;
+ }
+ for (x = 0; x < AST_CODEC_PREF_SIZE; x++) {
+ if (!(ast_codec_pref_index(&client->prefs, x, &tmpfmt))) {
break;
- if (!(client->capability & pref_codec))
+ }
+ if (!(ast_format_cap_iscompatible(client->cap, &tmpfmt))) {
continue;
- if (alreadysent & pref_codec)
+ }
+ if (ast_format_cap_iscompatible(alreadysent, &tmpfmt)) {
continue;
- codecs_num = add_codec_to_answer(p, pref_codec, dcodecs);
- alreadysent |= pref_codec;
- }
+ }
+ codecs_num = add_codec_to_answer(p, &tmpfmt, dcodecs);
+ ast_format_cap_add(alreadysent, &tmpfmt);
+ }
+ alreadysent = ast_format_cap_destroy(alreadysent);
if (codecs_num) {
/* only propose DTMF within an audio session */
@@ -544,13 +551,13 @@
return res;
}
-static format_t gtalk_get_codec(struct ast_channel *chan)
+static void gtalk_get_codec(struct ast_channel *chan, struct ast_format_cap *result)
{
struct gtalk_pvt *p = chan->tech_pvt;
- return p->peercapability;
-}
-
-static int gtalk_set_rtp_peer(struct ast_channel *chan, struct ast_rtp_instance *rtp, struct ast_rtp_instance *vrtp, struct ast_rtp_instance *trtp, format_t codecs, int nat_active)
+ ast_format_cap_copy2(result, p->peercap);
+}
+
+static int gtalk_set_rtp_peer(struct ast_channel *chan, struct ast_rtp_instance *rtp, struct ast_rtp_instance *vrtp, struct ast_rtp_instance *trtp, const struct ast_format_cap *cap, int nat_active)
{
struct gtalk_pvt *p;
@@ -658,15 +665,15 @@
}
/* Now gather all of the codecs that we are asked for */
- ast_rtp_codecs_payload_formats(ast_rtp_instance_get_codecs(tmp->rtp), &tmp->peercapability, &peernoncodeccapability);
-
- /* at this point, we received an awser from the remote Gtalk client,
+ ast_rtp_codecs_payload_formats(ast_rtp_instance_get_codecs(tmp->rtp), tmp->peercap, &peernoncodeccapability);
+
+ /* at this point, we received an answer from the remote Gtalk client,
which allows us to compare capabilities */
- tmp->jointcapability = tmp->capability & tmp->peercapability;
- if (!tmp->jointcapability) {
- ast_log(LOG_WARNING, "Capabilities don't match : us - %s, peer - %s, combined - %s \n", ast_getformatname_multiple(s1, BUFSIZ, tmp->capability),
- ast_getformatname_multiple(s2, BUFSIZ, tmp->peercapability),
- ast_getformatname_multiple(s3, BUFSIZ, tmp->jointcapability));
+ ast_format_cap_joint_copy(tmp->cap, tmp->peercap, tmp->jointcap);
+ if (ast_format_cap_is_empty(tmp->jointcap)) {
+ ast_log(LOG_WARNING, "Capabilities don't match : us - %s, peer - %s, combined - %s \n", ast_getformatname_multiple(s1, BUFSIZ, tmp->cap),
+ ast_getformatname_multiple(s2, BUFSIZ, tmp->peercap),
+ ast_getformatname_multiple(s3, BUFSIZ, tmp->jointcap));
/* close session if capabilities don't match */
ast_queue_hangup(tmp->owner);
@@ -1018,6 +1025,16 @@
if (!(tmp = ast_calloc(1, sizeof(*tmp)))) {
return NULL;
}
+ tmp->cap = ast_format_cap_alloc();
+ tmp->jointcap = ast_format_cap_alloc();
+ tmp->peercap = ast_format_cap_alloc();
+ if (!tmp->jointcap || !tmp->peercap || !tmp->cap) {
+ tmp->cap = ast_format_cap_destroy(tmp->cap);
+ tmp->jointcap = ast_format_cap_destroy(tmp->jointcap);
+ tmp->peercap = ast_format_cap_destroy(tmp->peercap);
+ ast_free(tmp);
+ return NULL;
+ }
memcpy(&tmp->prefs, &client->prefs, sizeof(struct ast_codec_pref));
@@ -1046,10 +1063,10 @@
ast_rtp_codecs_payloads_clear(ast_rtp_instance_get_codecs(tmp->rtp), tmp->rtp);
/* add user configured codec capabilites */
- if (client->capability) {
- tmp->capability = client->capability;
- } else if (global_capability) {
- tmp->capability = global_capability;
+ if (!(ast_format_cap_is_empty(client->cap))) {
+ ast_format_cap_copy2(tmp->cap, client->cap);
+ } else if (!(ast_format_cap_is_empty(global_capability))) {
+ ast_format_cap_copy2(tmp->cap, global_capability);
}
tmp->parent = client;
@@ -1081,9 +1098,9 @@
static struct ast_channel *gtalk_new(struct gtalk *client, struct gtalk_pvt *i, int state, const char *title, const char *linkedid)
{
struct ast_channel *tmp;
- int fmt;
- int what;
const char *n2;
+ struct ast_format_cap *what; /* used as SHALLOW COPY DO NOT DESTROY */
+ struct ast_format tmpfmt;
if (title)
n2 = title;
@@ -1098,20 +1115,29 @@
/* Select our native format based on codec preference until we receive
something from another device to the contrary. */
- if (i->jointcapability)
- what = i->jointcapability;
- else if (i->capability)
- what = i->capability;
- else
+ if (!(ast_format_cap_is_empty(i->jointcap))) {
+ what = i->jointcap;
+ } else if (i->cap) {
+ what = i->cap;
+ } else {
what = global_capability;
+ }
/* Set Frame packetization */
if (i->rtp) {
ast_rtp_codecs_packetization_set(ast_rtp_instance_get_codecs(i->rtp), i->rtp, &i->prefs);
}
- tmp->nativeformats = ast_codec_choose(&i->prefs, what, 1) | (i->jointcapability & AST_FORMAT_VIDEO_MASK);
- fmt = ast_best_codec(tmp->nativeformats);
+ ast_codec_choose(&i->prefs, what, 1, &tmpfmt);
+ ast_format_cap_add(tmp->nativeformats, &tmpfmt);
+
+ ast_format_cap_iter_start(i->jointcap);
+ while (!(ast_format_cap_iter_next(i->jointcap, &tmpfmt))) {
+ if (AST_FORMAT_GET_TYPE(tmpfmt.id) == AST_FORMAT_TYPE_VIDEO) {
+ ast_format_cap_add(tmp->nativeformats, &tmpfmt);
+ }
+ }
+ ast_format_cap_iter_end(i->jointcap);
if (i->rtp) {
ast_channel_set_fd(tmp, 0, ast_rtp_instance_fd(i->rtp, 0));
@@ -1124,10 +1150,12 @@
if (state == AST_STATE_RING)
tmp->rings = 1;
tmp->adsicpe = AST_ADSI_UNAVAILABLE;
- tmp->writeformat = fmt;
- tmp->rawwriteformat = fmt;
- tmp->readformat = fmt;
- tmp->rawreadformat = fmt;
+
+ ast_best_codec(tmp->nativeformats, &tmpfmt);
+ ast_format_copy(&tmp->writeformat, &tmpfmt);
+ ast_format_copy(&tmp->rawwriteformat, &tmpfmt);
+ ast_format_copy(&tmp->readformat, &tmpfmt);
+ ast_format_copy(&tmp->rawreadformat, &tmpfmt);
tmp->tech_pvt = i;
tmp->callgroup = client->callgroup;
@@ -1240,6 +1268,9 @@
if (p->vrtp)
ast_rtp_instance_destroy(p->vrtp);
gtalk_free_candidates(p->theircandidates);
+ p->cap = ast_format_cap_destroy(p->cap);
+ p->jointcap = ast_format_cap_destroy(p->jointcap);
+ p->peercap = ast_format_cap_destroy(p->peercap);
ast_free(p);
}
@@ -1341,15 +1372,15 @@
}
/* Now gather all of the codecs that we are asked for */
- ast_rtp_codecs_payload_formats(ast_rtp_instance_get_codecs(p->rtp), &p->peercapability, &peernoncodeccapability);
- p->jointcapability = p->capability & p->peercapability;
+ ast_rtp_codecs_payload_formats(ast_rtp_instance_get_codecs(p->rtp), p->peercap, &peernoncodeccapability);
+ ast_format_cap_joint_copy(p->cap, p->peercap, p->jointcap);
ast_mutex_unlock(&p->lock);
ast_setstate(chan, AST_STATE_RING);
- if (!p->jointcapability) {
- ast_log(LOG_WARNING, "Capabilities don't match : us - %s, peer - %s, combined - %s \n", ast_getformatname_multiple(s1, BUFSIZ, p->capability),
- ast_getformatname_multiple(s2, BUFSIZ, p->peercapability),
- ast_getformatname_multiple(s3, BUFSIZ, p->jointcapability));
+ if (ast_format_cap_is_empty(p->jointcap)) {
+ ast_log(LOG_WARNING, "Capabilities don't match : us - %s, peer - %s, combined - %s \n", ast_getformatname_multiple(s1, BUFSIZ, p->cap),
+ ast_getformatname_multiple(s2, BUFSIZ, p->peercap),
+ ast_getformatname_multiple(s3, BUFSIZ, p->jointcap));
/* close session if capabilities don't match */
gtalk_action(client, p, "reject");
p->alreadygone = 1;
@@ -1572,12 +1603,12 @@
if (p->owner) {
/* We already hold the channel lock */
if (f->frametype == AST_FRAME_VOICE) {
- if (f->subclass.codec != (p->owner->nativeformats & AST_FORMAT_AUDIO_MASK)) {
- ast_debug(1, "Oooh, format changed to %s\n", ast_getformatname(f->subclass.codec));
- p->owner->nativeformats =
- (p->owner->nativeformats & AST_FORMAT_VIDEO_MASK) | f->subclass.codec;
- ast_set_read_format(p->owner, p->owner->readformat);
- ast_set_write_format(p->owner, p->owner->writeformat);
+ if (!ast_format_cap_iscompatible(p->owner->nativeformats, &f->subclass.format)) {
+ ast_debug(1, "Oooh, format changed to %s\n", ast_getformatname(&f->subclass.format));
+ ast_format_cap_remove_bytype(p->owner->nativeformats, AST_FORMAT_TYPE_AUDIO);
+ ast_format_cap_add(p->owner->nativeformats, &f->subclass.format);
+ ast_set_read_format(p->owner, &p->owner->readformat);
+ ast_set_write_format(p->owner, &p->owner->writeformat);
}
/* if ((ast_test_flag(p, SIP_DTMF) == SIP_DTMF_INBAND) && p->vad) {
f = ast_dsp_process(p->owner, p->vad, f);
@@ -1609,13 +1640,13 @@
switch (frame->frametype) {
case AST_FRAME_VOICE:
- if (!(frame->subclass.codec & ast->nativeformats)) {
+ if (!(ast_format_cap_iscompatible(ast->nativeformats, &frame->subclass.format))) {
ast_log(LOG_WARNING,
"Asked to transmit frame type %s, while native formats is %s (read/write = %s/%s)\n",
- ast_getformatname(frame->subclass.codec),
+ ast_getformatname(&frame->subclass.format),
ast_getformatname_multiple(buf, sizeof(buf), ast->nativeformats),
- ast_getformatname(ast->readformat),
- ast_getformatname(ast->writeformat));
+ ast_getformatname(&ast->readformat),
+ ast_getformatname(&ast->writeformat));
return 0;
}
if (p) {
@@ -1845,7 +1876,7 @@
}
/*!\brief Part of PBX interface */
-static struct ast_channel *gtalk_request(const char *type, format_t format, const struct ast_channel *requestor, void *data, int *cause)
+static struct ast_channel *gtalk_request(const char *type, struct ast_format_cap *cap, const struct ast_channel *requestor, void *data, int *cause)
{
struct gtalk_pvt *p = NULL;
struct gtalk *client = NULL;
@@ -1937,8 +1968,8 @@
chan->name,
jid,
resource,
- ast_getformatname(chan->readformat),
- ast_getformatname(chan->writeformat)
+ ast_getformatname(&chan->readformat),
+ ast_getformatname(&chan->writeformat)
);
else
ast_log(LOG_WARNING, "No available channel\n");
@@ -2067,9 +2098,9 @@
if (!strcasecmp(var->name, "username"))
ast_copy_string(member->user, var->value, sizeof(member->user));
else if (!strcasecmp(var->name, "disallow"))
- ast_parse_allow_disallow(&member->prefs, &member->capability, var->value, 0);
+ ast_parse_allow_disallow(&member->prefs, member->cap, var->value, 0);
else if (!strcasecmp(var->name, "allow"))
- ast_parse_allow_disallow(&member->prefs, &member->capability, var->value, 1);
+ ast_parse_allow_disallow(&member->prefs, member->cap, var->value, 1);
else if (!strcasecmp(var->name, "context"))
ast_copy_string(member->context, var->value, sizeof(member->context));
else if (!strcasecmp(var->name, "parkinglot"))
@@ -2122,6 +2153,7 @@
memcpy(&global_jbconf, &default_jbconf, sizeof(struct ast_jb_conf));
/* set defaults */
+ memset(&prefs, 0, sizeof(prefs));
memset(&stunaddr, 0, sizeof(stunaddr));
global_stunaddr = 0;
global_allowguest = DEFAULT_ALLOWGUEST;
@@ -2138,9 +2170,9 @@
if (!strcasecmp(var->name, "allowguest")) {
global_allowguest = (ast_true(ast_variable_retrieve(cfg, "general", "allowguest"))) ? 1 : 0;
} else if (!strcasecmp(var->name, "disallow")) {
- ast_parse_allow_disallow(&prefs, &global_capability, var->value, 0);
+ ast_parse_allow_disallow(&prefs, global_capability, var->value, 0);
} else if (!strcasecmp(var->name, "allow")) {
- ast_parse_allow_disallow(&prefs, &global_capability, var->value, 1);
+ ast_parse_allow_disallow(&prefs, global_capability, var->value, 1);
} else if (!strcasecmp(var->name, "context")) {
ast_copy_string(global_context, var->value, sizeof(global_context));
} else if (!strcasecmp(var->name, "externip")) {
@@ -2167,6 +2199,7 @@
member = ast_calloc(1, sizeof(*member));
ASTOBJ_INIT(member);
ASTOBJ_WRLOCK(member);
+ member->cap = ast_format_cap_alloc();
if (!strcasecmp(cat, "guest")) {
ast_copy_string(member->name, "guest", sizeof(member->name));
ast_copy_string(member->user, "guest", sizeof(member->user));
@@ -2176,10 +2209,10 @@
member->prefs = prefs;
while (var) {
if (!strcasecmp(var->name, "disallow")) {
- ast_parse_allow_disallow(&member->prefs, &member->capability,
+ ast_parse_allow_disallow(&member->prefs, member->cap,
var->value, 0);
} else if (!strcasecmp(var->name, "allow")) {
- ast_parse_allow_disallow(&member->prefs, &member->capability,
+ ast_parse_allow_disallow(&member->prefs, member->cap,
var->value, 1);
} else if (!strcasecmp(var->name, "context")) {
ast_copy_string(member->context, var->value,
@@ -2229,8 +2262,22 @@
{
struct ast_sockaddr bindaddr_tmp;
struct ast_sockaddr ourip_tmp;
-
char *jabber_loaded = ast_module_helper("", "res_jabber.so", 0, 0, 0, 0);
+ struct ast_format tmpfmt;
+
+ if (!(gtalk_tech.capabilities = ast_format_cap_alloc())) {
+ return AST_MODULE_LOAD_DECLINE;
+ }
+ if (!(global_capability = ast_format_cap_alloc())) {
+ return AST_MODULE_LOAD_DECLINE;
+ }
+
+ ast_format_cap_add_all_by_type(gtalk_tech.capabilities, AST_FORMAT_TYPE_AUDIO);
+ ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_ULAW, 0));
+ ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_GSM, 0));
+ ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_ALAW, 0));
+ ast_format_cap_add(global_capability, ast_format_set(&tmpfmt, AST_FORMAT_H263, 0));
+
free(jabber_loaded);
if (!jabber_loaded) {
/* If embedded, check for a different module name */
@@ -2313,6 +2360,8 @@
}
ASTOBJ_CONTAINER_DESTROYALL(>alk_list, gtalk_member_destroy);
ASTOBJ_CONTAINER_DESTROY(>alk_list);
+ global_capability = ast_format_cap_destroy(global_capability);
+ gtalk_tech.capabilities = ast_format_cap_destroy(gtalk_tech.capabilities);
return 0;
}
Modified: team/dvossel/fixtheworld_phase1_step3/main/format_cap.c
URL: http://svnview.digium.com/svn/asterisk/team/dvossel/fixtheworld_phase1_step3/main/format_cap.c?view=diff&rev=302165&r1=302164&r2=302165
==============================================================================
--- team/dvossel/fixtheworld_phase1_step3/main/format_cap.c (original)
+++ team/dvossel/fixtheworld_phase1_step3/main/format_cap.c Mon Jan 17 18:20:00 2011
@@ -190,7 +190,7 @@
int ast_format_cap_remove(struct ast_format_cap *cap, struct ast_format *format)
{
struct ast_format *fremove;
- fremove = ao2_callback(cap->formats, OBJ_POINTER | OBJ_UNLINK, find_exact_cb, format);
+ fremove = ao2_callback(cap->formats, OBJ_POINTER | OBJ_UNLINK | OBJ_NOLOCK, find_exact_cb, format);
if (fremove) {
ao2_ref(fremove, -1);
@@ -268,7 +268,7 @@
{
struct ast_format *f;
struct ast_format_cap *tmp_cap = (struct ast_format_cap *) cap;
- f = ao2_find(tmp_cap->formats, (struct ast_format *) format, OBJ_POINTER);
+ f = ao2_find(tmp_cap->formats, (struct ast_format *) format, OBJ_POINTER | OBJ_NOLOCK);
if (f) {
ao2_ref(f, -1);
@@ -393,6 +393,7 @@
.joint_found = 0,
};
+ ast_format_cap_remove_all(result);
it = ao2_iterator_init(cap1->formats, AO2_ITERATOR_DONTLOCK);
while ((tmp = ao2_iterator_next(&it))) {
data.format = tmp;
Modified: team/dvossel/fixtheworld_phase1_step3/main/format_pref.c
URL: http://svnview.digium.com/svn/asterisk/team/dvossel/fixtheworld_phase1_step3/main/format_pref.c?view=diff&rev=302165&r1=302164&r2=302165
==============================================================================
--- team/dvossel/fixtheworld_phase1_step3/main/format_pref.c (original)
+++ team/dvossel/fixtheworld_phase1_step3/main/format_pref.c Mon Jan 17 18:20:00 2011
@@ -288,6 +288,8 @@
const struct ast_format_list *f_list = ast_get_format_list(&f_len);
+ ast_format_clear(result);
+
for (x = 0; x < f_len; x++) {
slot = pref->order[x];
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