Commit graph

3901 commits

Author SHA1 Message Date
Josep Torra 6ce7ade7c6 audioringbuffer: parse channels field from compressed audio caps
Also parse channels as an optional field in the caps for compressed
audio formats.
2014-04-08 12:54:04 +02:00
Thiago Santos 05e957106f videodecoder: do not deactivate the bufferpool, just unref
Videodecoder does late renegotiation, it will wait for the next
buffer before renegotiating its caps and bufferpool. It might happen
that downstream element switched from passthrough to non-passthrough
and sent a reconfigure upstream (that caused this renegotiation).
This downstream element will ask the video sink below for the bufferpool
with an allocation query and will get the same bufferpool that
videodecoder is holding, too.

When renegotiating, if videodecoder deactivates its bufferpool it
might be deactivating the bufferpool that some element downstream
is using and cause the pipeline to fail.

https://bugzilla.gnome.org/show_bug.cgi?id=727498
2014-04-04 13:50:03 -03:00
Vincent Penquerc'h 169166d0a2 audiobasesink: clip start samples to match clipped start time
Clock slaving can clip start time to zero, giving us a shorted
duration than we originally got. To keep in sync, we must then
discard the samples falling before that zero timestamp.

This possibly fixes random distortion caused by constant PA
underflows which are never resynced.
2014-04-04 17:04:06 +01:00
Wim Taymans 675d0400e1 mikey: Fix the KEMAC payload
The KEMAC payload actually needs to have subpayloads and the key should
go into the KEY_DATA subpayload. Add support for subpayloads and
implement the KEY_DATA payload.
Add some pointers to the conversion functions that allow us to add
encryption and decryption later.
2014-04-04 17:40:58 +02:00
Sebastian Dröge 6189847ed0 videodecoder: Always drain the decoder after a discont group in reverse playback mode 2014-03-30 18:26:59 +02:00
Sebastian Dröge 5a4fbb1638 videodecoder: Flush the decoder once per discont group, not once per keyframe 2014-03-30 18:00:53 +02:00
Sebastian Dröge f1f8731ff5 videodecoder: Handle reverse playback with multiple GOPs per discont group properly
baseparse will reverse each GOP for us already, so the segment events can
be after our keyframe. Make sure to get it and all other relevant sticky
events before starting to decode.
2014-03-30 17:59:55 +02:00
Sebastian Dröge 50c2218d4d videodecoder: Log event types of events that are pushed downstream 2014-03-29 10:33:01 +01:00
Sebastian Dröge 1c26e5734c videodecoder: In reverse playback mode we need to finish the subclass after passing all frames to it 2014-03-29 10:33:01 +01:00
Wim Taymans 8d439edd7a rtspconnection: add flush method
Add a method to set/unset the flushing state that makes _wait_backlog()
unlock.

See https://bugzilla.gnome.org/show_bug.cgi?id=725898
2014-03-28 09:34:33 +01:00
Wim Taymans 0348ee66f1 mikey: fix return values of g_return_* 2014-03-25 11:14:51 +01:00
Wim Taymans 183e441d88 rtsptransport: UDP is also default for SAVP and AVPF 2014-03-25 11:07:34 +01:00
Wim Taymans 51ca0bdf7b docs: add MIKEY docs 2014-03-24 17:12:52 +01:00
Wim Taymans 83888d6b13 mikey: add MIKEY parsing helpers
MIKEY is defined in RFC 3830 and is used to exchange SRTP encryption
parameters between a sender and a receiver in a secure way.
This library implements a subset of the features, enough to implement
RFC 4567, using MIKEY in SDP and RTSP.
2014-03-24 17:12:52 +01:00
Ognyan Tonchev d7857325c5 rtspconnection: Fix minor memory leaks in error handling
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=726642
2014-03-24 12:45:14 +01:00
Ognyan Tonchev e0af857445 rtspconnection: Fix connection_poll()
* Only check for conditions we are interested in.
* Makes no sense to specify G_IO_ERR and G_IO_HUP in condition, they
  will always be reported if they are true.
* Do not create timed source if timeout is NULL.
* Correctly wait for sources to be dispatched, context_iteration() is
  not guaranteed to always block even if set to do so.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=726641
2014-03-24 12:43:38 +01:00
Wim Taymans bf4079277d rtpbasepayload: add pt and ssrc to stats 2014-03-20 09:19:46 +01:00
Руслан Ижбулатов d6bd37460a rtspconnection: Silence a compiler warning
Cast the argument into (const char *) on W32, as winsock2 expects it.

https://bugzilla.gnome.org/show_bug.cgi?id=726433
2014-03-16 11:22:04 +01:00
Göran Jönsson 0b30fdbfbe rtspconnection: gst_rtsp_watch_wait_backlog
New method that wait until there is room in backlog queue.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=725898
2014-03-10 17:28:40 +01:00
David Svensson Fors 6cd0d10d30 rtspconnection: GstRTSPWatch func for tunnel GET response
Add a callback in GstRTSPWatch where the response to HTTP GET for
tunneled connections can be modified.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=725878
2014-03-10 10:43:03 +01:00
Wim Taymans 4898c30537 rtspdefs: add RFC 4567 headers and status code
This new Header and status code is used for SRTP
2014-03-10 10:33:28 +01:00
Matthieu Bouron a8951c16da video-overlay-composition: add GST_CAPS_FEATURE_META_GST_VIDEO_OVERLAY_COMPOSITION 2014-03-05 20:38:45 +01:00
Ognyan Tonchev 4220442441 rtspconnection: Call closed() when GET is closed in tunneled mode
This patch adds read source on the write socket in tunneled
mode and we get a callback when client disconnects the GET
channel.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=725313
2014-03-03 10:34:56 +01:00
Sebastian Rasmussen 900c204eb9 videoformat: Remove duplicate/incorrect section
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=725521
2014-03-02 23:41:51 +00:00
Sebastian Rasmussen 35bb1b3328 docs: Add annotations for return values
Rephrase and clarify some return value descriptions

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=725521
2014-03-02 23:41:18 +00:00
Sebastian Rasmussen 5b4f2ba20b docs: Fix argument and annotation typos
* colorbalance: Fix misspelled annotation
 * rtsp: Replace incorrectly documented function argument
 * sdp: Escape @ character to avoid gtk-doc warning
 * video-*: Add missing annotation colon
 * videodecoder/video-color: Fix function argument typos
 * videoutils: Remove unknown annotation field

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=725521
2014-03-02 23:22:51 +00:00
Tim-Philipp Müller 14b82bbc9a rtsp: fix build with older GLib versions
The gio/gnetworking.h header is only available since glib 2.36

https://bugzilla.gnome.org/show_bug.cgi?id=725206
2014-02-26 11:44:18 +00:00
Ognyan Tonchev 5445682c6a rtspconnection: Add missing include
https://bugzilla.gnome.org/show_bug.cgi?id=725206
2014-02-26 11:25:13 +00:00
Sebastian Rasmussen d6dc1b6c46 rtpbasepayload: Let caps event also configure seqnum-offset
Previously the sequence number kept track of by GstRTPBasePayload would
only be set when going from READY to PAUSED state. This meant that a
downstream element that attempted to configure a basepayloader by
setting seqnum-offset e.g. in its sinkpad's caps template would have
trouble configuring the basepayloader. The reason was that the caps
event which arrives with the desired value for seqnum-offset did not
arrive at the basepayloader until caps negotiation took place,
significantly later than the transition from READY to PAUSED.

The result after this patch is that the default value for the
seqnum-offset property, or later set values for this property, will take
effect when going from READY to PAUSED like before. In addition the an
arriving caps event will also affect the basepayloaders configured
sequence number as the event arrives.
2014-02-24 12:10:26 +01:00
Sebastian Rasmussen 638d069c91 rtpbasepayload: Fix payload type property boundary value
The payload type field in an RTP packet header is 7 bits wide, hence the
boundary values ought to be 0x00 and 0x7f, not the previously stated
values 0x00 and 0x80.
2014-02-24 12:10:26 +01:00
Sebastian Rasmussen 3cc67ff494 rtpbasedepayload: Fix typos in comments 2014-02-24 12:10:26 +01:00
Tim-Philipp Müller 6442e76e9f docs: add GstVideoPool to docs 2014-02-23 14:42:12 +00:00
Ognyan Tonchev ebe3530f51 rtspconnection: Remove read child source when POST is disconnected
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=724720
2014-02-21 16:21:45 +01:00
Aleix Conchillo Flaqué 0a115bd31f rtspconnection: allow specifying a certificate database
Two new functions have been added,
gst_rtsp_connection_set_tls_database() and
gst_rtsp_connection_get_tls_database(). The certificate database will be
used when a certificate can't be verified with the default database.

https://bugzilla.gnome.org/show_bug.cgi?id=724393
2014-02-19 21:48:13 +01:00
Aleix Conchillo Flaqué 9121b16aa0 rtspconnection: get rid of superfluous whitespaces 2014-02-19 21:22:30 +01:00
Nicolas Dufresne 6b77971097 video: Fix NV12_64Z32 default offset and size
This was a regression introduced by f52fd7a68, where we started using
the stride to encode the dimensions in tiles. This patch simply updates
offset and size calculation as described in the documentation,
part-mediatype-video-raw.txt.
2014-02-18 13:09:21 -05:00
Rafał Mużyło 5496d09eb4 audio: map channels=1,channel-mask=0 to MONO instead of NONE
Fixes problem in audioconvert, which would end up using
a mixmatrix when converting between different mono format
because it thinks MONO positioning is different from
unpositioned channels, which is not the case in this
special case. The mixmatrix would end up being 0.0 so
audioconvert would convert to silence samples.

https://bugzilla.gnome.org/show_bug.cgi?id=724509
2014-02-18 10:41:47 +00:00
Sebastian Dröge bc92cd8f67 audiosrc: Fix typo in docs
We read *from* the audio device, not to it.
2014-02-09 11:28:48 +01:00
Eric Trousset 2ca256acdb tagdemux: Forward TIME seeks upstream too, maybe upstream can handle that
https://bugzilla.gnome.org/show_bug.cgi?id=723597
2014-02-04 13:56:29 +01:00
Stefan Sauer 76ec6d3760 docs: doc fixes for audio library
Add sections docs for audiometa. Fix sections docs for audiochannels. Remove old
mixerutil section.
2014-02-03 09:36:43 +01:00
Thiago Santos e00dc5b879 audioencoder: push pending events and tags before EOS
if there are tags or events pending and an EOS is received, push those
events and tags before the EOS.
2014-01-29 12:33:59 -03:00
Thiago Santos da54836a33 videoencoder: push tags and events before eos
if any tags or events are pending, push them before pushing eos
2014-01-29 12:33:59 -03:00
Sebastian Rasmussen 125b9c19c0 rtpbasepayload: Do cosmetic changes to rtptime calculations
* Change running time type to guint64
 * Use GST_CLOCK_TIME_NONE() to check for invalid timestamps
 * Name variables so ns-based and hz-based timestamps are evident

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=719383
2014-01-28 14:41:41 +01:00
Sebastian Rasmussen 0142cd5e35 rtpbasepayload: Expose running-time of payloaded stream
https://bugzilla.gnome.org/show_bug.cgi?id=719415
2014-01-28 14:41:41 +01:00
Sebastian Rasmussen 865a5d1c8f rtpbasepayload: Improve documentation for perfect-rtptime
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=719383
2014-01-28 14:41:41 +01:00
Sebastian Rasmussen 713dfe0d70 rtpbasepayload: Fix typos in documentation for properties
Fixes https://bugzilla.gnome.org/show_bug.cgi?id=719383
2014-01-28 14:41:41 +01:00
Sebastian Rasmussen fa393e5d60 rtpbasepayload: Add statistics property
This property allows for an atomically retrieved set of properties that
can e.g. be used to generate RTP-Info headers.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=719415
2014-01-27 15:11:09 +01:00
Wim Taymans 8ac3dbc4f3 video-chroma: don't crash on NULL resamplers
Make dummy resamplers for all cases and only execute the horizontal
resampler instead of crashing.

See https://bugzilla.gnome.org/show_bug.cgi?id=722742
2014-01-23 10:45:00 +01:00
Wim Taymans 6a88d6f8cd audiobasesink: make _get_time more threadsafe
We call the _get_time function from the provided clock and we don't lock
the sink object for performance reasons. Make sure we only read and
check variables once so that they don't change while we are executing
the code.

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=720661
2014-01-21 11:25:18 +01:00
Nicola Murino 26e3c92093 riff: Fix G726 caps creation
https://bugzilla.gnome.org/show_bug.cgi?id=720995
2014-01-19 10:34:57 +01:00
Tim-Philipp Müller 26a57f9a89 discoverer: minor docs fix
Can use a custom main context as well if needed.
2014-01-18 15:01:58 +00:00
Sebastian Dröge 87829debe4 videodecoder: Add API to get the currently pending frame size for parsing
https://bugzilla.gnome.org/show_bug.cgi?id=719890
2014-01-18 13:54:22 +01:00
Thiago Santos 47f720a8f0 videodecoder: plug leak when frames are released on subclass stop
They end up stored in the 'pending_events' list and should be
freed after calling stop
2014-01-17 11:21:33 -03:00
Thiago Santos 695ddbd56f audiodecoder: copy rate and channels from input before fixating output caps
For default caps generation when handling gap events that are sent
before any buffer, try to use caps that are closer to what upstream
provided to avoid fixating rate or channels to 1 as default.

So there are the steps:
1) Try to set rate, channels and channel-mask from upstream if provided
2) Fixate the rate and channels to the default rate and channels from
   audio lib
3) Fixate the caps just to be sure everything is fixed
4) If no channel-mask was provided and channels > 2, use a default
   channel-mask (taken from audioconvert code)

https://bugzilla.gnome.org/show_bug.cgi?id=722144
2014-01-15 15:20:39 -03:00
Thiago Santos 95a56dbda7 audiodecoder: avoid parsing caps event if it is not used
Saves some cpu
2014-01-14 09:34:44 -03:00
Thiago Santos 8cf8332b91 audiodecoder: make sure caps is set before forwarding gap event
Before trying to generate a default fixated caps when handling a gap
event, make sure that the same strategy that is used when handling
a buffer has been attempted. Otherwise audiodecoder will ignore
upstream caps settings such as rate and channels and will likely
end with a caps with channels=1 and rate=1.

https://bugzilla.gnome.org/show_bug.cgi?id=722144
2014-01-14 09:34:44 -03:00
Sebastian Dröge 335e6e888d videoverlay: Don't mention gconf elements and add a sentence about playbin/playsink
playbin/playsink now implement the video overlay interface
2014-01-14 13:20:48 +01:00
Wim Taymans ecac298e4e videodecoder: only copy chroma_site when known
Only overwrite the chroma-site if we have a valid value in the reference
format.
2014-01-13 17:24:01 +01:00
Wim Taymans fba783a5fe videoutils: add some debug 2014-01-13 17:24:01 +01:00
Nicolas Dufresne 595bcfb4d7 video: Generate types for tile enumeration
https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:47:23 -05:00
Nicolas Dufresne f52fd7a68b video: Don't use extra plane and componenent for tile format
Instead of using extra plane, we encode the number of tiles in x and y in the stride of
each planes (i.e. y_tiles << 16 | x_tiles) and introduce tile_mode, tile_width and
tile_height into GstVideoFormatInfo structure.

https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:47:03 -05:00
Wim Taymans d899e6df5a video: rename NV12T -> NV12_64Z32
Is a bit more descriptive and allows us to add more tiled types
later.

https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:46:52 -05:00
Nicolas Dufresne c8597330a9 video-frame: scale vertical tiles based on subsampling
https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:46:45 -05:00
Nicolas Dufresne 53605e35f4 video-frame: fix tiled pixel stride
Pixel stride is per component, not per plane. We get the tile mode from
the pixelstride of the TILE component.

https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:46:37 -05:00
Wim Taymans 61cbdf379b format: improve docs
https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:46:31 -05:00
Wim Taymans f3e989179b video-format: fix off-by-one for tiled coordinates
https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:46:17 -05:00
Wim Taymans fb0fecbf48 video-tile: improve docs
https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:46:07 -05:00
Wim Taymans 33c486e5c1 video-format: use shifts when possible
https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:46:01 -05:00
Wim Taymans 980811c120 video-frame: fix copy of tiled formats
Add code to copy tiled planes.

https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:45:50 -05:00
Wim Taymans 3ceb7dfe22 video-tile: add tile mode and helper functions
Move the tile helper functions to their own file. Make it possible to
make other tiling modes later.

https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:45:37 -05:00
Wim Taymans f8d3b9b4fc video: add NV12T support
https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:45:26 -05:00
Wim Taymans 67a2717235 Add tiled color format support
https://bugzilla.gnome.org/show_bug.cgi?id=707361
2014-01-13 10:45:02 -05:00
Sebastian Dröge 5bf2a44496 encoding-profile: Fix typo in the docs 2014-01-13 15:32:38 +01:00
Thiago Santos 672cda66db videodecoder: do not lose events when dropping frames
Events must be persisted after a frame is dropped to avoid
losing obligatory information for the stream.

https://bugzilla.gnome.org/show_bug.cgi?id=721835
2014-01-13 06:11:09 -03:00
Thiago Santos 5b8e1925b5 videodecoder: use new segment earlier for reverse playback
For reverse playback, the segment event will only be pushed when
the first buffer is actually pushed. But for decoding frames and storing
those into the list to be pushed the output_segment.rate value is used
to determine if it is forward or reverse playback.

In case a previous segment event (or none) is in use it will mistakenly
think it is doing forward playback and push the buffers immediatelly and
try to clip buffers based on an old segment (or an uninitialized one, leading
to an assertion)

This patch fixes this by copying the segment earlier if on reverse playback

https://bugzilla.gnome.org/show_bug.cgi?id=721666
2014-01-13 06:11:09 -03:00
Nicola Murino 3a8c1b3550 riff: Add G726 ADPCM support
https://bugzilla.gnome.org/show_bug.cgi?id=720995
2014-01-08 09:45:14 +01:00
Wim Taymans 594dd4287b rtsptransport: calculate default lower transport
Add an internal method to calculate the default lower transport whan it
is missing.
2014-01-07 14:51:46 +01:00
Wim Taymans 124cf22d5d rtsptransport: add method to get media-type from transport
Add a method to make a media-type from the transport. Deprecate the old
method that only used the mode.

Based on patch from Aleix Conchillo Flaqué <aleix@oblong.com>

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=720219
2014-01-07 14:51:37 +01:00
Wim Taymans 5b13c5b464 rtsptransport: add GType for Profile
See https://bugzilla.gnome.org/show_bug.cgi?id=720696
2014-01-07 11:52:27 +01:00
Stefan Sauer 86e6f10781 typefind: add support of BWF RF64 a 64bit wav variant
Detect and describe the RF64 Broadcast Wave Format.
Fixes #519220
2014-01-05 23:35:52 +01:00
Stefan Sauer 28ce2c4053 riff: remove new parse_ncdt api again
This chunk is avi specific, no need to expose this as public api.
2014-01-05 21:39:52 +01:00
Stefan Sauer 1fee60277d riff: fix indentation messup from previous commit 2014-01-04 21:54:10 +01:00
Stefan Sauer f653aa8c85 riff: add support for nikon tags
Nikon cameras store metadata in a custom format. Add parsing of the chunk and
extract some initial data.
API: gst_riff_parse_ncdt()
Fixes #636143
2014-01-04 21:35:29 +01:00
Jan Schmidt f0b655e1ad audiobasesrc: Avoid unnecessary configuration
Port a change from audiobasesink from def07410, to ignore setcaps
when the caps don't actually change, and avoid a reconfiguration
and reset of the ringbuffer in that case.
2014-01-03 02:20:39 +11:00
Stéphane Cerveau 9f3becdf52 riff: Add id3 tag
Add id3 tag for wavparse

https://bugzilla.gnome.org/show_bug.cgi?id=721241
2013-12-31 10:38:44 +01:00
Edward Hervey b08598da1c encoding-profile: Add missing break statement
And do a minor cleanup

COVERITY CID 1139753
2013-12-30 17:30:15 +01:00
Stefan Sauer bc8213e21e riff: add two chunk-ids for samples instruments
Wav files can have 'smpl' and 'inst' chunks.
2013-12-30 14:40:35 +01:00
Edward Hervey 213596cc85 riff-media: Fix array read
nbchannels ranges from 1 to 8, therefore use '- 1' to get the proper
array value.
2013-12-30 13:46:34 +01:00
George Kiagiadakis 6108407db1 gstrtpbasepayload: use the session's suggested ssrc after a collision, if the session provides one
Conflicts:
	gst-libs/gst/rtp/gstrtpbasepayload.c
2013-12-30 13:13:35 +01:00
Sebastian Dröge 58592a2af3 audio/video-info: Properly initialize the info structures in set_format()
And don't assume in other code that set_format() preserves any fields at
all. These assumptions were already made here for fields that were changed
by set_format().
2013-12-30 10:53:24 +01:00
Sebastian Dröge 65732d9c97 audio/video-info: Initialize the complete struct to 0 in the beginning
Instead of only initializing some parts in some code paths. Also
makes it easier to use the reserved bits of the structs later.

https://bugzilla.gnome.org/show_bug.cgi?id=720810
2013-12-30 10:15:20 +01:00
Reynaldo H. Verdejo Pinochet 5f07c1ed4e audiobasesrc: Bunch of cosmetic/grammar fixes 2013-12-27 01:36:09 -03:00
Reynaldo H. Verdejo Pinochet 0a6d6e1fff audiobasesrc: Retarget FIXME to 2.0
Properly fixing this one would break API.
2013-12-27 01:36:09 -03:00
Reynaldo H. Verdejo Pinochet aa1883d5d7 audiobase*: Drop trailing withespaces 2013-12-27 01:36:09 -03:00
Reynaldo H. Verdejo Pinochet d1b3454299 audiobasesrc: Break some too long lines 2013-12-27 01:36:09 -03:00
Reynaldo H. Verdejo Pinochet 6b17d86692 audiobasesrc: Add FIXME for times in NSECONDS
Timebase is in nanoseconds pretty much everywhere else
2013-12-27 01:36:09 -03:00
Jan Schmidt c24a1254c9 audiodecoder: Choose a default initial caps before sending GAP
If there are no caps from the audio decoder when handling a GAP
event - as when one is received right at the start on a DVD without
initial audio - then choose any default caps for downstream and
then send the GAP, so the audio sink has a configured format in
which to start the ringbuffer.

Also, make the audio sink reject a GAP without caps with a clearer
error message.

Fixes bug https://bugzilla.gnome.org/show_bug.cgi?id=603921
2013-12-27 04:04:45 +11:00
Wim Taymans 01c7fb11ba rtsptransport: add more profiles
Add support for Feedback profiles
2013-12-26 17:41:00 +01:00
Wim Taymans f8e3a25415 video-frame: fix plane copy for index plane
Move the code to handle the index plane in the _copy_plane.
2013-12-25 10:54:55 +01:00
Lionel Landwerlin aedca7acfc colorbalance: add missing annotation for list_channels()
https://bugzilla.gnome.org/show_bug.cgi?id=720999
2013-12-24 09:25:53 +00:00