Commit graph

107 commits

Author SHA1 Message Date
aogun
a6e28ca268 aacparse: fix wrong offset of adts channel 2019-11-18 01:06:41 +00:00
Mart Raudsepp
ab6e49e9cc audioparsers: add back segment clipping to parsers that have lost it
The pre_push_frame default clipping behaviour was introduced in 2010
with commit 30be03004e and modified with commit 4163969a24 in 2011,
when most parsers didn't implement a pre_push_frame yet. Not having it
meant that clipping was done by default. Those that did implement a
pre_push_frame (flacparse and mpegaudioparse) at the time, had the flag
adjusted as part of the 2011 refactor work.

All other parsers got a pre_push_frame vfunc implementation only in
2013, but seem to have forgot to keep the clipping behaviour, as
was done automatically when a pre_push_frame implementation doesn't
exist for the parser. aacparse lost it with commit 91d4abcea in
July 2013; the others in Dec 2013 as part of AUDIO_CODEC tag posting
in commits 6f89b430e, d2ab5199b, 29f2cae12, 753d3c23a and 292780574.
2019-06-24 14:40:58 +03:00
Thibault Saunier
0a6a62aa76 docs: Port all docstring to gtk-doc markdown 2019-05-13 10:24:40 -04:00
Roland Jon
7fe18db041 aacparse: fix codec_data buffer leak
https://bugzilla.gnome.org/show_bug.cgi?id=740101
2018-08-13 00:05:59 +01:00
Jan Alexander Steffens (heftig)
e273e5f7a6 aacparse: When parsing raw input, accept frames of any size
Raw AAC streams might have very small frames, e.g. 6 byte frames
when encoding silence. These frames are then smaller than aacparse's
default min_frame_size of 10 bytes (ADTS_MAX_SIZE).

When passthrough is disabled or aacparse has to output ADTS, GstBaseParse
will concatenate these short frames to the following frame before
handling them to aacparse, which processes each input buffer as a single
frame, producing bad output.

To avoid this problem, set the min_frame_size to 1 when receiving a raw
stream.

https://bugzilla.gnome.org/show_bug.cgi?id=792644
2018-01-18 19:09:19 +00:00
vijay
810c0bb084 aacparse : Fix, Caps were not set while reusing aacparse
While reusing aacparse caps were not set.This fix enables aacparse to reuse in same pipeline.

https://bugzilla.gnome.org/show_bug.cgi?id=783027
2017-05-24 13:59:52 +02:00
Edward Hervey
9a066e548d aacparse: streamline and improve AudioSpecificConfig parsing
AudioSpecifigConfig is used in a variety of AAC streams but was
being parsed differently. Instead, make everyone use the same parsing.

* Remove unused 'bits' field (it was always set to 0 if present)
* Add proper GAConfig parsing (to know the  number of samples per frame
  if present).

Fixes wrong rate/channels configuration in streams coming from qtdemux

https://bugzilla.gnome.org/show_bug.cgi?id=780966
2017-04-06 12:04:46 +02:00
Edward Hervey
345c566552 aacparse: Handle Parametric Stereo with HE-AAC(v2)
According to ISO/IEC:14496-2:2009 , in the case of HE-AACv2 (audioObjecType
29) parametric stereo is used (a single mono track is used and then
transformations are applied to it to provide a stereo output).

We therefore report two channels in the case where there is one reported
in the audioChannelConfiguration.

Fixes the various issues where a demuxer would report two channels, but
then the parser would say there's only one channel, and then the decoder
would output two channels.
2017-04-04 18:16:39 +02:00
Sebastian Dröge
87a2c140ca aacparse: Make sure we have enough data in the codec_data to be able to parse it
Also error out cleanly if mapping the buffer failed.

https://bugzilla.gnome.org/show_bug.cgi?id=775450
2016-12-01 13:38:52 +02:00
Vinod Kesti
f1726c7088 aacparse: assertion while converting ADTS stream to RAW
aacparse resizes input buffer while converting ADTS stream to RAW,
During buffer resize buffer write permission is not checked.
This throws gst_buffer_is_writable assertion and leads to AV sync issue some times.
It is corrected by making buffer writeable using gst_buffer_make_writable

https://bugzilla.gnome.org/show_bug.cgi?id=774129
2016-11-15 14:57:22 +02:00
Vincent Penquerc'h
c974df1c06 aacparse: parse a bit more of the humongous LOAS data
https://bugzilla.gnome.org/show_bug.cgi?id=769278
2016-09-06 15:09:21 +01:00
Vincent Penquerc'h
e66ee5491c aacparse: make it clear when a potential LOAS frame is not one
https://bugzilla.gnome.org/show_bug.cgi?id=769278
2016-09-06 15:09:21 +01:00
Vincent Penquerc'h
b0f20bacfd aacparse: add a few comments to anchor parsing to the spec
https://bugzilla.gnome.org/show_bug.cgi?id=769278
2016-09-06 15:09:21 +01:00
Vincent Penquerc'h
559546dd3a aacparse: improve channel/rate handling
Keep track of the last parsed channels/rate fields so they can be
used even if the element was not yet configured.

https://bugzilla.gnome.org/show_bug.cgi?id=769278
2016-09-06 15:09:21 +01:00
Vincent Penquerc'h
740749ac55 aacparse: fix varlength number reading as per spec
https://bugzilla.gnome.org/show_bug.cgi?id=769278
2016-09-06 15:09:21 +01:00
Vincent Penquerc'h
991e46ce42 aacparse: strip uneeded static arrays slack
https://bugzilla.gnome.org/show_bug.cgi?id=769278
2016-09-06 15:09:21 +01:00
Sebastian Dröge
fd261e1099 aacparse: Reject raw AAC if no codec_data is found in the caps
If necessary, a demuxer will have to invent something here but this is only a
problem with non-conformant files anyway.
2016-07-04 16:58:38 +02:00
Vineeth TM
1071309870 good: use new gst_element_class_add_static_pad_template()
https://bugzilla.gnome.org/show_bug.cgi?id=763076
2016-03-24 14:32:20 +02:00
Dave Craig
6cdbf40622 aacparse: Handle gst_pad_get_current_caps() returning NULL gracefully
This can happen when the pipeline is currently shutting down.

https://bugzilla.gnome.org/show_bug.cgi?id=759539
2016-02-23 18:11:42 +02:00
Dave Craig
328346ad21 audioparsers: Check for NULL return value of gst_pad_get_current_caps()
https://bugzilla.gnome.org/show_bug.cgi?id=759503
2015-12-16 10:12:44 +01:00
Edward Hervey
6888871d2a aacparse: Avoid over-skipping when checking LOAS config
There might be multiple LOAS config in a row in a full frame. The first
one might be a multi-layer config (which we can't properly parse yet)...
but then followed by a valid (single-layer) one.

The code was previously skipping whole frames (instead of just the LOAS
config we failed to read) resulting in multiple frames (seen up to 6s in
some situation) being dropped before finally getting the configuration.

https://bugzilla.gnome.org/show_bug.cgi?id=758826
2015-12-02 14:12:55 +01:00
Guillaume Marquebielle
35139ee8b7 aacparse: fix uninitialized variables in LOAS config reading
On reading LOAS config, flag v=1 and vA=1 combination can occur, leading to warning
"Spec says "TBD"...". Returning TRUE on this case while parameters 'sample_rate' and
'channels' are pointing to uninitialized values can end on setting random values as
rate and channels on src caps.

https://bugzilla.gnome.org/show_bug.cgi?id=755611
2015-09-26 22:18:26 +10:00
Jan Schmidt
c919548e2c aacparse: Skip LOAS AAC until a valid config is seen.
It's normal when dropping into the middle of a stream to
not always have the config available immediately, so skip LOAS
until a valid config is seen without either setting invalid
caps or erroring out.

https://bugzilla.gnome.org/show_bug.cgi?id=751386
2015-09-16 20:51:44 +10:00
Olivier Crête
b1dfe209c2 audioparsers: use new base parse API to fix tag handling
https://bugzilla.gnome.org/show_bug.cgi?id=679768
2015-08-16 17:02:19 +01:00
Thiago Santos
9523fb23ed audioparsers: enable accept-template flag
Do a quick check with the pad template caps as it is enough. Users
should have figured the appropriate full caps on a previous caps query

https://bugzilla.gnome.org/show_bug.cgi?id=753623
2015-08-14 13:42:27 -03:00
Sebastian Dröge
ec82eba96b aacparse: Add support for channel configurations 11, 12 and 14 and 7 actually has 8 channels
ISO/IEC 14496-3:2009/PDAM 4 added 11, 12 and 14.
2015-06-04 16:09:41 +02:00
Nicolas Huet
5ead23a14a aacparse: fix LOAS parsing issue
Fix missing index in syncword searching

https://bugzilla.gnome.org/show_bug.cgi?id=745585
2015-03-06 14:34:08 -03:00
Sebastian Dröge
f5d26af3c9 aacparse: Also only unref caps if they're not NULL 2014-12-10 11:35:29 +01:00
Sebastian Dröge
6d6c6aac13 aacparse: gst_pad_get_allowed_caps() will return NULL if there is no peer 2014-12-10 11:35:02 +01:00
Sebastian Dröge
4aac09e708 aacparse: Always set profile/level on the caps
We have the information already, so why not use it?
2014-10-26 11:47:25 +01:00
Matej Knopp
e1d275cfec aacparse: fix memory leak when prepending ADTS headers
https://bugzilla.gnome.org/show_bug.cgi?id=737761
2014-10-02 10:41:28 +03:00
Nicolas Huet
15894c1853 aacparse: Fix parsing issue when the buffer does not have a complete ADTS/LOAS frame
https://bugzilla.gnome.org/show_bug.cgi?id=735520
2014-09-02 09:43:14 +03:00
Sebastian Dröge
638a700463 aacparse: Properly report in the CAPS query that we can convert ADTS<->RAW
https://bugzilla.gnome.org/show_bug.cgi?id=733190
2014-07-16 17:27:57 +02:00
Thiago Santos
0443c2593a Revert "aacparse: put codec data on caps for loas format"
This reverts commit e459cf3e01.

This was pushed by accident, the bug should likely be fixed in
libav https://bugzilla.libav.org/show_bug.cgi?id=644
2014-02-27 23:15:04 -03:00
Thiago Santos
e459cf3e01 aacparse: put codec data on caps for loas format
gst-libav audio decoder also needs codec data for LOAS format, otherwise
it will complain about not having a decoder config and skip all packets

https://bugzilla.gnome.org/show_bug.cgi?id=596772
2014-02-27 17:10:03 -03:00
Reynaldo H. Verdejo Pinochet
0898de65c8 aacparse: be more strict at ADTS header parsing
Adds two extra checks:

- Sampling frequency on header can't be 15.
- Frame size should be at least 9 or 7, depending
  on whether CRC protection is present.

https://bugzilla.gnome.org/show_bug.cgi?id=724638
2014-02-21 15:04:11 -03:00
Reynaldo H. Verdejo Pinochet
c3a4bb1657 aacparse: make sure we have enough ADTS data
We need at least 6 bytes to pass over to _get_frame_len()
but we were just checking for a minimum of 2 bytes for the
syncword.

https://bugzilla.gnome.org/show_bug.cgi?id=724638
2014-02-21 15:04:11 -03:00
Vincent Penquerc'h
2ad1f20e7b Revert "aacparse: relax the detection of ADTS"
This was pushed by mistake along with the V4L2 fix.

This reverts commit 8eb4b032be.
2014-01-14 09:43:56 +00:00
Akihiro Tsukada
8eb4b032be aacparse: relax the detection of ADTS
According to ISO/IEC 13818-7, "channel_config" field in ADTS header
may have value of 0, as in the case of frame with PCE.
gst_aac_parse_detect_streams() returned FALSE for those frames
and discarded them.
2014-01-13 09:08:50 +00:00
Sebastian Dröge
b3abbe3f5e aacparse: Post AUDIO_CODEC tag 2013-12-16 10:03:05 +01:00
Wim Taymans
0d55724a2b audioparsers: don't leak template caps 2013-12-04 09:12:07 +01:00
Wim Taymans
e0a5c07e8d audioparsers: use ACCEPT_INTERSECT flag
The parser can accept input that is not completely specified. Use the
ACCEPT_INTERSECT flag on the sinkpad to tweak the acceptcaps function to
check for intersection only. This allows us to proxy downstream
constraints while still allowing non-subset caps as input.
We can then also remove the appended template caps workaround.
Make a unit-test to check the new feature.

This reverts commit 26040ee38c

Fixes https://bugzilla.gnome.org/show_bug.cgi?id=705024
2013-12-03 22:26:44 +01:00
Wim Taymans
e3f393f7e6 audioparsers: remove fields from filter
We need to remove the fields from the filter when we can convert
between them.
2013-12-03 21:39:57 +01:00
Wim Taymans
e8313a1e70 audioparsers: refactor code to remove caps fields 2013-12-03 21:29:13 +01:00
Chris Bass
b40bf67526 aacparse: allow conversion from raw AAC to ADTS
This patch will prepend ADTS headers to raw AAC audio frames, allowing
upstream elements to link to decoders that only support AAC in ADTS format.

Note that no error correction bits are added to ADTS frames in this code.

https://bugzilla.gnome.org/show_bug.cgi?id=615740
2013-08-13 15:58:23 +02:00
Vincent Penquerc'h
91d4abceaa aacparse: allow conversion from ADTS to raw AAC
Some muxers (eg, qtmux) only support raw AAC, so this allows linking
an encoder that outputs ADTS only to those muxers.

The conversion is simple (omit the first 7 or 9 bytes of the frame),
but has to be done in pre_push instead of handle_frame as 1.0 does
not seem to allow skipping bytes there as 0.10 used to.

Other conversions are not supported (yet).
2013-07-26 09:44:11 +01:00
Vincent Penquerc'h
55e9338846 aacparse: fix object_type parsing off-by-one in ADTS frame
According to http://wiki.multimedia.cx/index.php?title=ADTS,
the value stored in ADTS headers is one less than the object
type of the AAC stream.

A look at ffmpeg shows it also adds 1 to the value read off
the ADTS header.

Note that this might break other things that happen to have
an inverse off by one to match the existing code.
2013-07-26 09:44:10 +01:00
Matej Knopp
ae92ea21a1 aacparse: be less verbose when parsing LOAS streams
https://bugzilla.gnome.org/show_bug.cgi?id=704162
2013-07-15 07:55:08 +02:00
Sebastian Dröge
c49dede772 audioparsers: Make sure the caps are actually writable before changing them 2012-12-17 15:17:12 +01:00
Sebastian Dröge
26040ee38c audioparsers: Use the peer caps for restrictions instead of the srcpad allowed caps
Otherwise we will intersect with the srcpad template caps and add all the caps fields
that the parser will ever set, no matter if downstream restricts this field or not.
This requires upstream to set this field on the caps to successfully negotiate.

https://bugzilla.gnome.org/show_bug.cgi?id=690184
2012-12-17 15:01:02 +01:00