Commit graph

232 commits

Author SHA1 Message Date
Sebastian Dröge
760ae91ec3 typefindfunctions: Add IVF typefinder 2010-05-22 08:55:51 +02:00
Philip Jägenstedt
3762cfd3d7 typefind: Detect WebM as video/webm
Refactor matroska_type_find into ebml_check_header and a new
matroska_type_find and webm_type_find.
2010-05-19 19:24:35 +02:00
Tim-Philipp Müller
555a3a5d14 typefinding: add channels and rate to ADTS caps if we can 2010-04-12 15:04:31 +01:00
Arun Raghavan
43a04483d9 typefinding: add AAC level to ADTS caps
This adds code to calculate the level for a given AAC stream and export
it in the stream caps. For AAC LC streams, the level is calculated
according to the definition under the AAC Profile. For other streams,
the definition under the Main Profile is used.

HE-AAC support is still to be done, and is dependent on detecting the
presence of SBR and PS in the stream.

Level is added as a field of type string because that's the way it's
done in H.264 caps as well. There are only a few possible levels, so
not using a numerical type is not too painful in this case, and
consistency is nice.

Fixes #613589.
2010-04-12 15:04:31 +01:00
Arun Raghavan
34dcb8458e typefinding: add AAC profile to ADTS caps
This looks at the AAC profile for ADTS streams and adds the profile as a
string in the corresponding caps.

Profile is the actual profile, base-profile denotes the minimum codec
requirements to decode this stream. In this case they're always the
same, but they may differ e.g. in case of certain HE-AAC streams that
can be partially decoded by LC decoders (with loss of quality of course)
if no suitable HE-AAC decoder is available.

Fixes #612312.
2010-04-12 15:04:23 +01:00
Benjamin Otte
3bd4aa26ff Add -Wwrite-strings to configure
Fixes for the code included
2010-03-16 17:41:51 +01:00
David Hoyt
cfa8de336c typefind: use g_ascii_strncasecmp() instead of strncasecmp()
g_ascii_strncasecmp() is more portable and likely more robust as
well (with random binary data as input).

Fixes #612845.
2010-03-15 18:45:13 +00:00
Kaj-Michael Lang
0230f7ed9e typefind: Handle stm module format
Fixes #609314.
2010-02-15 12:50:45 +00:00
Sebastian Dröge
1ae783dafc typefindfunctions: Add typefinder for ISO MP4 files
Fixes bug #607848.
2010-01-24 20:46:58 +01:00
Tim-Philipp Müller
eef885cf86 typefinding: optimise AC-3 typefinder a bit
Make AC-3 typefinder use the DataScanCtx stuff so we don't have to
do gst_type_find_peek() in the inner loop all the time. Also return
when we've suggested AC3 caps, instead of continuing with the loop.
2010-01-23 15:28:02 +00:00
Tim-Philipp Müller
ca7ba91e5b Revert "typefind: Reduce number of calls to gst_type_find_peek."
This reverts commit c661bfaa99.

This breaks AC-3 typefinding for all cases where the first frame
is at an offset > 0.
2010-01-23 15:27:49 +00:00
Stefan Kost
8ebb6be803 typefind: include stdio.h for sscanf 2010-01-22 16:15:54 +02:00
Tim-Philipp Müller
2a84cf0941 typefinding: add PNM typefinder
Add PNM typefinder, so we can remove the one that's in the PNM plugin
in -bad (which btw uses different/wrong media types that don't match
the ones used by gdkpixbufdec) and people don't make fun of us for
loading image decoders when typefinding and playing back audio files.
2010-01-22 02:09:58 +00:00
David Schleef
e432c8ebc2 typefind: rewrite h.264 detection
Make detection simpler: check for NALs, check that they make
sense, and report how certain we are that it's a raw H.264 stream.
Fixes: #583376.
2010-01-19 13:37:12 -08:00
Wim Taymans
8d30d92740 typefind: mp4 video is not parsed 2010-01-13 17:36:05 +01:00
Thiago Santos
148d951fbc typefind: Add aac stream-format to caps
Also add the aac stream-format field on the caps when
detecting it.
2010-01-13 12:49:20 -03:00
Edward Hervey
c661bfaa99 typefind: Reduce number of calls to gst_type_find_peek.
Shaves off a couple percents off typefinding
2009-11-09 19:18:07 +01:00
Tim-Philipp Müller
37f8957181 typefind: fix typo in previous mxf typefinder change 2009-10-21 20:36:23 +01:00
Edward Hervey
d48d47e683 typefind: speed up mxf_type_find over 300 times for worst case scenarios
* memcmp is expensive and was being abused, reduce calling it by checking
  the first byte.
* iterating one byte at at time over 64 kbites introduces a certain overhead,
  therefore we now do it in chunks of 1024 bytes

And I do mean over 300 times. The average instruction call per mxf_type_find
was previously 785685 and it's now down to 2458 :)
2009-10-21 21:04:45 +02:00
David Schleef
1871a6025d typefind: detect 'ftypqt ' as video/quicktime 2009-10-06 12:19:12 -07:00
Tim-Philipp Müller
f051514f69 typefinding: disable typefinder for headerless flac
Disable headerless flac typefinder as long as it happily typefinds anything
including /dev/urandom as flac and as long as it's not particularly useful
given that such streams don't really exist in the wild.

Also fix up some comments so that gtk-doc doesn't complain about them.
2009-09-07 17:13:12 +01:00
Wim Taymans
f1b209f409 typefind: fix midi typefinding
We already have a audio/midi typefinder so don't override it with the midi in
RIFF typefinder or else we fail to detect plain midi files.
2009-09-04 15:48:06 +02:00
Sebastian Dröge
a69ffb5886 typefindfunctions: Add typefinder for Midi inside RIFF
This is a standard Midi file format that should be supported by
all Midi decoders and also has the mimetype audio/mid according to
the Midi specification homepage.

Fixes bug #594094.
2009-09-04 07:36:10 +02:00
Tim-Philipp Müller
4cacc441d8 typefinding: move gio-based xdg mime typefinder from -bad to -base
Its purposes is mainly to avoid false positives (e.g. mp3 typefinder
reporting a 20% probability and somesuch). Won't be registered if
the gio plugin has been disabled via ./configure --disable-gio.
2009-09-03 09:01:47 +01:00
Sebastian Dröge
3c8ff21ba2 typefindfunctions: Detect AVF files as RIFF files too
AVF is valid RIFF but has AVF0 as first fourcc instead of RIFF.

Partially fixes bug #593117.
2009-08-26 09:10:19 +02:00
Sebastian Dröge
3b4c35e319 typefindfunctions: Also detect SVG by the <svg> starting tag
Not all SVG images have the DOCTYPE specified.
2009-08-12 12:11:08 +02:00
Sebastian Dröge
141c3f52cd typefindfunctions: Add typefinders for many game sound console formats supported by gme
These are AY, GBS, GYM, KSS, SAP and VGM. SPC and NSF already had typefinders.
2009-08-07 09:33:34 +02:00
Tim-Philipp Müller
85a08d8dc2 typefinding: fix postscript typefinder probability
Two bytes for a rare format hardly warrants MAXIMUM typefinding
probability, POSSIBLE seems more appropriate.
2009-08-06 09:57:25 +01:00
Sebastian Dröge
76571840ef typefindfunctions: Add SVG typefinder 2009-08-06 06:43:35 +02:00
Sebastian Dröge
5c52513aab typefindfunctions: Add postscript typefinder 2009-08-06 06:43:35 +02:00
Sebastian Dröge
37839ee2b3 typefindfunctions: Use static caps again for MPEG4 typefinding 2009-08-06 06:43:35 +02:00
Arnout Vandecappelle
ce24ac4ed0 typefindfunctions: Implement better & more flexible MPEG4 typefinding
This detects more MPEG4 streams as MPEG4.

Fixes bug #556537.
2009-08-06 06:43:35 +02:00
Benjamin Gaignard
2f4c65bb06 typefindfunctions: Fix typefinding of SDP files
Fixes bug #589574.
2009-08-06 06:43:33 +02:00
Tim-Philipp Müller
e199d7e1cd typefinding: fix detection of fLaC id packet in broken flac-in-ogg
There are flac-in-ogg files without the usual flac packet framing
and these files just have a 4-byte fLaC ID packet as first packet.
We need to recognise the type just from these four bytes if we
want oggdemux to recognise these streams correctly.
2009-08-01 19:01:39 +01:00
Tim-Philipp Müller
2670f23812 typefind: recognise Kate spu subtitles as well
Recognise spu-subtitles, SUB and K-SPU as valid categories for
Kate subtitles as well.
2009-07-24 09:42:05 +01:00
Tim-Philipp Müller
d53e754d42 typefinding: use subtitle/x-kate for Kate subtitle streams and application/x-kate for the rest
Differentiate subtitle streams and lyrics/cracktastic/complex streams via
the category string in the headers. This seems like a useful distinction
to make, and also seems more future-proof. See #525743.
2009-07-13 23:00:04 +01:00
Tim-Philipp Müller
8b94cd3934 typefinding: lower the h264 typefinder's probability
A NEARLY_CERTAIN is absolutely not warranted given the kind
of things it checks for. Even a LIKELY is probably not entirely
appropriate.
2009-06-25 12:09:59 +01:00
Edward Hervey
31e7bf098d typefindfunctions: Fix caps for ogg typefinder. 2009-06-02 09:54:23 +02:00
Arnout Vandecappelle
192a34af40 typefindfunctions: made mp3_type_find less aggressive
mp3_type_find could suggest already when only a single valid header
was found, if it ran out of data before the end of the next frame.
Therefore, ignore the last found frame if it was incomplete.
Fixes bug #579692.
2009-05-12 09:03:22 +02:00
Tim-Philipp Müller
04a860c6f7 typefinding: make flac typefinder return lower probability for frame headers
The flac frame header typefinder overstates the likelihood of a match, leading
to false positives with e.g. aac streams and PDF files. Reduce probabilty
returned from LIKELY to POSSIBLE for the frame header matchin code.
Fixes #574939.
2009-03-15 19:57:36 +00:00
Tim-Philipp Müller
a622ff74b0 typefinding: improve image/bmp typefinder
Detect more variations and also bail out in more cases where the values
don't make sense. Furthermore, add width/height and bpp to the caps,
because we can.
2009-03-15 19:52:46 +00:00
Tim-Philipp Müller
4cbe4d2c72 typefinding: flac typefinder fixes
Use scan context for initial peek as well. Peek 6 bytes in the initial
peek rather than 5 bytes, to match the length of the memcmp we're doing
on that data later. Return immediately when we found caps from looking
at the beginning of the data - no point in continuing to scan the next
64kB for something matching a frame header.
2009-03-11 13:33:33 +00:00
Jonathan Matthew
db7ecda64f typefind: add photoshop typefind functions
Add photoshop typefind functions.
Fixes #574516.
2009-03-09 16:19:40 +01:00
Edward Hervey
9acf7de5a4 typefind: Use the proper data pointer instead of poking random memory. 2009-03-09 09:08:00 +01:00
Stefan Kost
080493ccff typefind: Make the flac check more tight to not mistace some aac files for flac. Fixes #570356.
Add comments about the flac format. Tighten the check to not allow values that
refer to headers.
2009-02-03 15:28:50 +02:00
Michael Smith
81cc88326f Ensure we have sufficient data when using data scan contexts.
Fixes crashes typefinding things that look like they might contain AAC
data (but probably aren't actually AAC).
2009-01-26 18:02:00 -08:00
Sebastian Dröge
5dfcb63252 Rename files and types from speexresample to audioresample
Rename files and types from speexresample to audioresample
to finish the move and to prevent any confusion.
2009-01-23 12:33:41 +01:00
Wim Taymans
cc8b9ae5e8 Add typefind function for gsm
Because core now supports typefindfactories without a typefind function we can
register a factory fo GSM that will --if all else fails-- assume the file is a
GSM file based on the registered extension.
Fixes #566661.
2009-01-23 11:40:26 +01:00
Benjamin Gaignard
336e1346e4 Add typefinder for Mobile XMF. Fixes bug #568707. 2009-01-23 10:19:27 +01:00
Guillaume Emont
d477a37e7e gst/typefind/gsttypefindfunctions.c: Add typefinders for MS Word files and OS X .DS_Store files to prevent them to be...
Original commit message from CVS:
Patch by: Guillaume Emont <guillaume at fluendo dot com>
* gst/typefind/gsttypefindfunctions.c: (plugin_init):
Add typefinders for MS Word files and OS X .DS_Store files to
prevent them to be recognized as MPEG files. Fixes bug #564098.
2008-12-11 12:32:03 +00:00