Use dedicated functions and different code paths for the different use
cases, instead of just a single function which does if/else all the
time.
Change-Id: Ic3ab928c3605cfe4a2f48889e95a3a1ddccdbbec
This type is used as const everywhere except internally, so make it part
of the typedef for brevity.
Change-Id: Ic4afe037b392239a991d5380c6708903011da29e
1) Read dtxb->start while the lock is held (not strictly necessary as
the read should be atomic anyway)
2) Expect that dtxb->start can be larger than rtpe_now.tv
The latter can happen as `rtpe_now` in a timer thread is faked to be
exactly the time when the timer was supposed to run, and not the actual
current time, which means that a newly added packet can have a later
time stamp than the "now" the timer thread is using.
Change-Id: I48fd7f78af97c6d5b802e5151d69855a90f4032d
Some codecs (e.g. Opus) can natively encode audio with various clock
rates without producing an output that is locked to that clock rate and
without requiring resampling the input. Add an appropriate callback
function and adapt tests.
Change-Id: Id788c4d4c05e20f93cce7e910f9f265b381cbe34
This makes it possible to have codecs running at variable clock rates
that differ from their RTP clock rates.
Change-Id: Ia2f5effb82eefe8c3028573ba0a6697da28473b1
Instead of just having an integer multiplier, support a fractional
factor. This allows us to have the RTP clock rate run faster than the
audio clock rate, and not just slower by an integer factor.
Change-Id: I7681cf369c43d8424ca2d2ebeffe932595d271ec
Reset the iteration counter for the frequency list when codec handlers
are set up, which happens while setting a new block mode. This makes
sure that a newly set list of frequencies is iterated starting from the
top.
Change-Id: I7ab4e28a1a998c11e38e26cf5b1f17f01299d5ad
Support multiple tone frequencies for DTMF-security=tone to enable
audibly distinguishing multiple consecutive DTMF events from one
another.
Change-Id: I6fa33a5768aae198220d0b0cc4c53308c5661a52
The `dtmf_send` event might not have a matching entry while handling a
received DTMF event. Move bookkeeping of the random output event into
`dtmf_recv`.
Change-Id: I5507b0b7f5eca6e29cbcaccc905ab25249b22aa3
Usually supplemental RTP types (DTMF) are listed after the primary audio
codecs. In the case of the order being reversed, fix `single-codec` so
that it doesn't strip the actual audio codec that is listed after the
DTMF type.
Change-Id: I1b03b89e31bebf4de303b643dcf08d2ffb90ebaf
Similar to I7fd298669a4fd69e62edc4760ffd92eff074707b but for
codec-accept. This prefers accepting codecs that match the given
definiton exactly, but also accepts compatible codecs if no exact match
is found.
Change-Id: I52a2ab6e75f7334a85a8ef059a0d6703a07e4b7f
When adding codecs to the SDP for potential transcoding, use more
sophisticated logic to determine whether the desired codec is already
present. Previously only the raw RTP payload string was used, which
doesn't take codec-specific format options into account. The new
matching function will now also match against existing codecs with
slightly different but compatible a=fmtp options, but will not match
against those with incompatible options.
Change-Id: I7fd298669a4fd69e62edc4760ffd92eff074707b
Convenience function to get a list of all codecs that match a given
definition, including a possible exact match.
Change-Id: I2b7d49fb320ad1725b348f7d29be450e5fea925b
Make these functions return the newly created payload type object so
that it can be manipulated directly without having to do a lookup.
Change-Id: Ib035cf7d61c61d0de6d5f87dfd497d17ba28ca5f
Parse out the format parameters for a payload type object when the codec
definition is loaded. Parsing it out is done only once, and if done
early the parsed contents can be used for format checking, comparing,
matching, etc.
Change-Id: I2856e5a8d4d76e7e1e648eff4a91fc51d0ba20c2
Split up this function into two parts so that they can be used
individually. Eliminate the special 0x1 return value as this isn't used
anywhere else. Move the error reporting into
codec_make_payload_type_sup() where it belongs.
Change-Id: Id2060272d87596a3db32d8776930a98b0f226b3b
Introduce an additional function for codec matching. Different functions
match different parts of an RTP payload type object and the referenced
codecs.
Change-Id: I2e488eaa7f69a55322db748fd40c8d1195e38605
We have no use for -1/0/1 return values. Change the return type to bool
to make things more clear.
Change-Id: Iedf1d8278c6dfddddb328ce7b3b1dbae132a39b7
Parsing out the a=fmtp string has been left up to the codec init
function until now, with the values that resulted from the parsing being
stored only within the codec. Convert this to an explicit method to
parse the a=fmtp string, and introduce a dedicated struct to store the
resulting values.
Functionally this change is a no-op.
Change-Id: Ia84e26d632ed5209b4439fd82c1e4e38850fd024
Create a dedicated struct to hold certain attributes shared by both sink
handlers and media subscriptions, as a preparation to simplify handling
these attributs.
Change-Id: I866159c33ed6d6a2873d2cf68c4906ea705d253e
Starting with release 5.1, ffmpeg obsoletes the `channels` and
`channel_layout` fields, replacing them with a unified `ch_layout`
struct of type AVChannelLayout. Add wrapper defines into the
compile-time build-test headers fix_frame_channel_layout*.h to
accommodate both new and old versions.
Change-Id: I3d43b85dc3140155a61b1cf2269cda166ad88e9a
Allow override the bitrate if one is already set, as opus_init()
initially sets a default bitrate, which is then overridden by codec-set.
Change-Id: Id0253d23a8f5de977e30d296872ea1df01fdbfbc
The PT tracker doesn't distinguish between audio/media types and
supplemental types, so in order not to break DTMF handling we must take
all combinations of primary (audio/media) types and supplemental types
as both input types and handler types into account.
Fix-up for 74075f6396
Fix-up for I57e1278e4fad157083d9526d4829f2940581687f
closes#1508
possibly also #1504
Change-Id: If7b242def2d35fbed14b11d204ea328b8bfe5d79
The codec answer routine resets the codec storage and so also resets the
clock rate tracker for "touched" codecs. This leads to all codecs seen
as "not touched" in the answer routine, which in turn leads to
supplemental codecs present in the answer SDP that should not be there.
Use the "for transcoding" flag for previously present codecs to retain
the "touched" status across the codec answer routine.
Change-Id: Idc4624606f7f10d7983e22ddf856432b07421157
DTX and delay buffers and their timers are shut down during the codec
negotiation phase, which also happens for the offer side while
processing an answer. If the codec negotiation routine determines that
the existing codec handlers can be kept intact, we must restart the DTX
and delay buffers that have previously been shut down.
Buffer objects are never freed during a shutdown, therefore we simply
need to restore the contained references to indicate that these buffers
are active again.
closes#1481
Change-Id: I57181ba1655fd781a7c543ee31aa67fd179ba89b
Richard Fuchs
szcom