Commit graph

34 commits

Author SHA1 Message Date
Aurélien Zanelli
6b5e950236 vc1parse: set seq_layer_sent to FALSE on reset()
https://bugzilla.gnome.org/show_bug.cgi?id=738526
2014-11-08 19:01:10 +01:00
Aurélien Zanelli
025f8b9129 vc1parse: implement asf to *-frame-layer stream-format
This commit add an helper to convert a frame to frame-layer format and
use it to implement these two stream-format conversion:
- asf --> sequence-layer-frame-layer
- asf --> frame-layer

In simple/main profile, we basically have a raw frame, so building a
frame layer isn't too complicated. But in advanced profile, the first
frame-layer should contain sequence-header, entrypoint, and frame and
each keyframe should contain entrypoint, so we have to handle these
carefully.

https://bugzilla.gnome.org/show_bug.cgi?id=738526
2014-11-08 19:01:10 +01:00
Aurélien Zanelli
7d76ba5731 vc1parse: check output format at negotiation time
Add an helper to check that output stream-format is coherent with
profile and header-format. It also check if we know how to do the
conversion if the input stream-format differs from selected
output-format.
So, in case output stream-format is not allowed, it will now fail at
negotiation rather than in pre_push_frame.

https://bugzilla.gnome.org/show_bug.cgi?id=738526
2014-11-08 19:01:10 +01:00
Aurélien Zanelli
5eadb05fab vc1parse: add some asf related stream-format conversions
This commit introduces an helper to convert an ASF frame to BDUs format with
startcodes and use this helper to implements following stream-format
conversions:
- asf --> bdu
- asf --> sequence-layer-bdu
- asf --> sequence-layer-raw-frame

https://bugzilla.gnome.org/show_bug.cgi?id=738526
2014-11-08 19:01:10 +01:00
Aurélien Zanelli
f2c5900c6d vc1parse: add some simple stream-format conversion
It add the support of following stream-format conversion:
- bdu --> sequence-layer-bdu
- bdu-frame --> sequence-layer-bdu-frame
- frame-layer --> sequence-layer-frame-layer

For these conversion, the only requirements is to push a sequence-layer
buffer prior to data.

https://bugzilla.gnome.org/show_bug.cgi?id=738526
2014-11-08 19:01:10 +01:00
Aurélien Zanelli
cd500c5a06 vc1parse: prepare the stream-format conversion code and add the simplest ones
It prepares the template for stream-format conversion and it implements
the following conversion:
- sequence-layer-bdu --> bdu
- sequence-layer-bdu-frame --> bdu-frame
- sequence-layer-frame-layer --> frame-layer

Work is done in the pre_push_frame() method.

https://bugzilla.gnome.org/show_bug.cgi?id=738526
2014-11-08 19:01:10 +01:00
Aurélien Zanelli
4cc6c7fe3b vc1parse: introduce a helper to make sequence-layer
It will be useful to implement stream-format conversion.

https://bugzilla.gnome.org/show_bug.cgi?id=738526
2014-10-20 13:17:57 +02:00
Aurélien Zanelli
89455b7106 vc1parse: select caps according to wmv format at negotiation
Some VC1 decoder can have different caps according to wmv format, ie
WMV3 or WVC1.
So instead of keeping the first available caps, we interserct with
current WMV format.

https://bugzilla.gnome.org/show_bug.cgi?id=738532
2014-10-20 12:18:50 +02:00
Aurélien Zanelli
6375fce925 vc1parse: parse frame header when stream format is ASF/raw for simple/main profile
When stream-format is ASF or sequence-layer-raw-frame, we basically have
a raw frame so we can parse it to extract some information such the
keyframe flag. The only requirement is to have a valid sequence-header.

This commit parse the frame header and set the DELTA_UNIT buffer flag in
case the frame is not a keyframe.

https://bugzilla.gnome.org/show_bug.cgi?id=738519
2014-10-14 14:02:30 +02:00
Aurélien Zanelli
77453c8124 vc1parse: just assume none header-format when no codec_data is present
https://bugzilla.gnome.org/show_bug.cgi?id=738449
2014-10-14 10:23:28 +02:00
Aurélien Zanelli
6df477ff0d vc1parse: fix framesize when input is frame-layer
frame-layer header is represented as a sequence of 32 bit unsigned
integer serialized in little-endian byte order, so framesize is on the
first 3 bytes.

SMPTE 421M Annex L.

https://bugzilla.gnome.org/show_bug.cgi?id=738243
2014-10-10 11:51:14 +01:00
Aurélien Zanelli
677d052e84 vc1parse: unref caps when it is empty in renegotiate()
https://bugzilla.gnome.org/show_bug.cgi?id=737724
2014-10-02 10:43:49 +03:00
Aurélien Zanelli
42167b0d1f vc1parse: initialize sent_codec_tag before using it
https://bugzilla.gnome.org/show_bug.cgi?id=736951
2014-09-23 19:50:26 +03:00
Aurélien Zanelli
7acf2fe5cb vc1parse: enable header-format conversion
In fact we support header-format conversion which is done in
update_caps() method.

https://bugzilla.gnome.org/show_bug.cgi?id=736786
2014-09-18 12:28:12 +03:00
Aurélien Zanelli
de141c3237 vc1parse: forge sequence-layer from seq_hdr instead of seq_layer
If we don't have a seq_layer_buffer, we also don't have a valid
seq_layer because there are set together in
gst_vc1_parse_handle_seq_layer().

So when output header format is sequence-layer and when we don't have a
seq_layer_buffer, we forge one from seq_hdr.

https://bugzilla.gnome.org/show_bug.cgi?id=736781
2014-09-17 11:37:44 +03:00
Aurélien Zanelli
d2847eaa09 vc1parse: fix sequence-layer/frame-layer endianness
Sequence-layer and frame-layer are serialized in little-endian byte
order except for STRUCT_C and framedata fields as described in SMPTE 421M Annex
L.

https://bugzilla.gnome.org/show_bug.cgi?id=736750
2014-09-16 17:40:55 +03:00
Aurélien Zanelli
2071c13936 vc1parse: fix malformed sequence layer header and STRUCT_C
This commit fix several issues with sequence layer header forging on
update_caps():
- 0x00000004 unsigned integer is before STRUCT_C.

- Set reserved bits of STRUCT_C to their values for simple/main
  profiles in sequence layer header format and ASF header format.

- Sequence layer shall be represented as a sequence of 32 bits unsigned
  integers and shall be serialized in little-endian byte order except
  for STRUCT_C which shall be serialized in big-endian byte-order.

See SMPTE 421M Annex L for more details about sequence layer format.

https://bugzilla.gnome.org/show_bug.cgi?id=736474
2014-09-12 16:10:50 +03:00
Sebastian Dröge
78ab2cdffd vc1parse: Fix compiler warnings when compiling with G_DISABLE_ASSERT 2014-06-29 20:11:58 +02:00
Vincent Penquerc'h
7659f3bec4 vc1parse: guard against dividing by zero
If framerate is unknown, we write the maximum framerate
allowed for this profile/level:

https://tools.ietf.org/html/draft-ietf-avt-rtp-vc1-06#section-6.1
http://wiki.multimedia.cx/index.php?title=VC-1#Setup_Data_.2F_Sequence_Layer

Coverity 1139694
2014-04-21 13:23:46 +01:00
Todd Agulnick
ccd9a9cb89 vc1parse: Some compiler warning fixes to satisfy XCode compiler
https://bugzilla.gnome.org/show_bug.cgi?id=720513
2013-12-16 16:53:25 +01:00
Sebastian Dröge
b3f198b67d vc1parse: Post VIDEO_CODEC tag 2013-12-16 10:25:22 +01:00
Wim Taymans
9ac2cee2db videoparsers: use ACCEPT_INTERSECT
We can also accept caps with missing fields.
2013-12-04 09:49:20 +01:00
Wim Taymans
e9dd2df3f4 videoparsers: remove fields from filter
Don't filter out the caps properties we can convert between when
proxying the getcaps query to the downstream peer pad.
2013-12-04 09:49:20 +01:00
Wim Taymans
d5a16bccac videoparsers: refactor remove_fields in getcaps 2013-12-04 09:49:20 +01:00
Sreerenj Balachandran
b4c52425f2 vc1parse: Fix the SequenceLayer handling for advanced profile.
The Sequence Header Data Structure STRUCT_C for Advanced Profile
has only a one valid field which is the profile indicator. Don't
use the reserved fields for fps update like Simple/Main profile.

https://bugzilla.gnome.org/show_bug.cgi?id=705667
2013-08-12 16:12:52 +01:00
Sreerenj Balachandran
ea213f826c vc1parse: Fix seq hdr STRUCT_A handling for advanced profile.
The Sequence Header Data Structure STRUCT_A for advanced profile
may be eight consecutive zero bytes.Don't try to override the
width and height values in this case.

https://bugzilla.gnome.org/show_bug.cgi?id=705667
2013-08-12 16:12:52 +01:00
Thijs Vermeir
471ad809f6 videoparsers: use appropriate printf format for gsize 2012-12-18 16:52:26 +01:00
Sebastian Dröge
6d5fc5a771 vc1parse: Port to 1.0 2012-10-25 14:05:48 +02:00
Alessandro Decina
00abb674ca vc1parse: disable BDU parsing until it's more mature
Parsing and splitting BDUs seems to trigger a few bugs in
downstream decoders so disable it for now.
2012-10-25 14:05:48 +02:00
Alessandro Decina
d03f5499bd vc1parse: set duration on output buffers
This has the nice side effect of avoiding hanging at EOS with truncated asf
clips.

Conflicts:
	gst/videoparsers/gstvc1parse.c
2012-10-25 14:05:48 +02:00
Alessandro Decina
f287dec1a2 vc1parse: workaround for simple/main codec_data being 5 bytes long
Sometimes the codec_data buffer for simple/main pushed by asfdemux is 5 bytes
instead of 4. When that happens, codec_data is still valid but it seems to have
one 0x00 trailing byte. Might be a bug in the demuxer, needs more investigation.
2012-10-25 14:05:48 +02:00
Alessandro Decina
8aec23ac05 vc1parse: remove stub stream conversion code 2012-10-25 14:05:48 +02:00
Alessandro Decina
cbecbbe23e vc1parse: add some more debugging to _renegotiate 2012-10-25 14:05:48 +02:00
Sebastian Dröge
5af8f82ecd vc1parse: Add VC1 parser plugin 2012-10-25 14:05:48 +02:00