Track audio writes in the mix buffer to set the `active` flag to true
whenever a write occurs, which makes it possible to create the buffer in
an inactivate state and implicitly set it active on demand.
Handle the mix buffer not returning any data in the RTP sending logic
(which is what happens for an inactive buffer) by simply not sending any
packets.
Change-Id: Iaeb0f6deadb3d90020c8c62872735cc94db80504
Similar to the existing media_player, but instead of simply producing
its own standalone output media stream, the audio_player takes over the
entire media stream flowing to the receiver, including media forwarded
from the opposite side of the call, as well as media produced by the
media_player.
Change-Id: Ic34ecf08fc73b04210cfffb1a7d795b462ece5ea
We use next_run.tv_sec as flag to signal shut down of the media player
timer. Don't even call the run function when the timer has already been
shut down.
Change-Id: I68248ce05e368bd17ed1a6d346f125c035d0da07
Return true/false from media player run functions to signal whether
playback is finished and whether codec handlers should be reset.
Change-Id: Ieb2e0861190ad2851d986bae28becc5548e215ce
Extend __make_transcoder_full with a custom callback function to create
the SSRC handlers.
Functional no-op.
Change-Id: I79cfabf6e9758b105a89908f9023bd773b838d9e
Support creating transcoders with different "packet decoded" callback
functions.
Functional no-op.
Change-Id: I49ba720841161999dc0ae166ea0841dc094e8bc7
Split out the parts of __ssrc_handler_transcode_new that are related to
the decoder only, leaving the encoder-related code in a separate
function. Allow re-use of the decoder setup code.
Functional no-op.
Change-Id: Ifb91c388a872a4ca14c0cc4571f4d0578271407f
A simple circular audio buffer that allows mixing multiple sources of
audio. Sources are tracked by SSRC and all sources are expected to
provide audio in the same format (same clock rate, channels, sample
format).
Only one consumer per buffer is supported, which is expected to retrieve
buffered audio at regular intervals (ptime) and so continuously empty
the buffer.
The first audio source to write into the buffer at the leading edge of
the circular buffer has its audio simply copied into the buffer, with
the leading edge advanced, while other later sources writing into the
buffer mixed into the existing buffered audio at their respective write
positions.
Change-Id: I0f6642b036944508f2a33420359de488ef8b991c
Convenience function to check whether any formats have changed, which
would indicate that a restart of the media player is needed.
Functional no-op.
Change-Id: I2bc9b57b95bb229bc4f8cfc49ca662fa724d3642
In order to improve the efficieny of the code (make lookups
faster) use GQueues for CMD_ADD manipulations and
GHashTable for CMD_REM manipulations.
This gives the following benefits:
- faster lookup (check), if any SDP command is to be applied
(no need to iterate through all values of commands, as it used to be)
- keep a sequence for CMD_ADD values given by option flag(s)
In order to keep the code more lightweight and clear,
add a separate struct ptr to queues and hash tables into
the call_interfaces header.
Change-Id: I7e45aca4062750c7b8959473edb410ed76cc04e7
Don't change to a new port for sendonly streams as this causes problems
with NAT. A device receiving a sendonly SDP with a new port won't send
any RTP to the new port, leading to a closed (non existent) NAT mapping.
Change-Id: I2ea2163eb9f1203226bd781b53f421c790a86f0a
The old port latching logic was simply to use the last (newest)
allocated endpoint_map. This turned out to be wrong, because the last
used socket on the monologue could have been one that was allocated
earlier (and older endpoint_map), as it can happen during repeated
re-invites. Add a new function to actually look for the correct
endpoint_map, matching the currently used socket, to make sure the port
doesn't change.
Change-Id: Iae768fe48539264575aed67cbbb6b08ac745130f
New section of option flags has been introduced for SDP body
attributes manipulations.
Three levels of the SDP session are concerned:
- session level (global one)
- media level - audio
- media level - video
Three different actions are supported for now:
- add
- remove
The value of the command has a wildcard matching approach.
Other attributes apart `a=` can not be edited by this functionality.
So such headers as: `c=`, `s=`, `o=` cannot be touched.
Change-Id: I939d4582839096b2399f7ded865e91ff6eb960a4
(cherry picked from commit 3f06c18793)
Because of the repeating code snippets, which insert attributes
into the SDP chop->output GString, it's just better to introduce
a separate function for that.
This will give one additional advantage — there will be only one
place, where we can control (for example, depending on manipulation
rules) whether to print this attribute or not.
Change-Id: I1b12f2dd2fda8475a783352678ac939267b64080
To better organizea code and not duplicate same functionality
in the future, it's better to handle an insertion of
the sdp_attribute object using a dedicated hanlder.
New handler:
attr_insert(struct sdp_attributes *attrs, struct sdp_attribute *attr)
Change-Id: I24236d81257b95ef98e0886d3ba362cc1e50dfbe
Richard Fuchs
emvondo
Donat Zenichev