diff options
| author | Mark Michelson <mmichelson@digium.com> | 2016-11-16 15:42:39 -0600 |
|---|---|---|
| committer | Mark Michelson <mmichelson@digium.com> | 2016-11-16 15:42:39 -0600 |
| commit | 2c031b67d3c7da83bab914bcdaad45d2a0bc9ff8 (patch) | |
| tree | 2ca3db534d3d8778116855aff6b2159dc5beb9d7 /res | |
| parent | a58d3597019f8cc5a503f140671232ae3f8d9119 (diff) | |
res_format_attr_opus: Fix fmtp generation.
res_format_attr_opus assumed that the string being passed into it was
empty. It tried to determine if the only thing it had written was
a=fmtp:<num>
And if it had, it would reset the string. Its calculation was off when
working with chan_sip, though. chan_sip passes the entire built SDP
rather than an empty string. This resulted in always putting an empty
fmtp line in the SDP.
ASTERISK-26520 #close
Reported by scgm11
Change-Id: Ib2e8712d26a47067e5f36d5973577added01dbb5
Diffstat (limited to 'res')
| -rw-r--r-- | res/res_format_attr_opus.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/res/res_format_attr_opus.c b/res/res_format_attr_opus.c index 12b910593..49382f6aa 100644 --- a/res/res_format_attr_opus.c +++ b/res/res_format_attr_opus.c @@ -158,7 +158,8 @@ static struct ast_format *opus_parse_sdp_fmtp(const struct ast_format *format, c static void opus_generate_sdp_fmtp(const struct ast_format *format, unsigned int payload, struct ast_str **str) { struct opus_attr *attr = ast_format_get_attribute_data(format); - int size; + int base_fmtp_size; + int original_size; if (!attr) { /* @@ -169,7 +170,8 @@ static void opus_generate_sdp_fmtp(const struct ast_format *format, unsigned int attr = &default_opus_attr; } - size = ast_str_append(str, 0, "a=fmtp:%u ", payload); + original_size = ast_str_strlen(*str); + base_fmtp_size = ast_str_append(str, 0, "a=fmtp:%u ", payload); if (CODEC_OPUS_DEFAULT_SAMPLE_RATE != attr->maxplayrate) { ast_str_append(str, 0, "%s=%d;", @@ -211,8 +213,8 @@ static void opus_generate_sdp_fmtp(const struct ast_format *format, unsigned int CODEC_OPUS_ATTR_DTX, attr->dtx); } - if (size == ast_str_strlen(*str)) { - ast_str_reset(*str); + if (base_fmtp_size == ast_str_strlen(*str) - original_size) { + ast_str_truncate(*str, original_size); } else { ast_str_truncate(*str, -1); ast_str_append(str, 0, "\r\n"); |