Commit graph

94 commits

Author SHA1 Message Date
Mathieu Duponchelle
3cdc5870a1 transcriberbin: new high-level bin for speech to Closed Caption
This new element puts together some of the elements we've written
in recent times (awstranscriber, tttocea608, textwrap, cccombiner)
into a convenience high-level element.

The design of the element is AV in -> AV (+ CC metas) out.

The element exposes property to set and unset a "passthrough" mode,
during which the transcriber element's state is set to NULL but kept
in the bin, in order for the user to be able to set properties on
sub elements no matter what the current mode is, using the
GstChildProxy interface.

In addition, the element ensures that the latency it reports stays
fixed so that playback continues uninterrupted.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/528>
2021-06-30 02:07:01 +02:00
Mathieu Duponchelle
23219c3c09 tttocea608: don't pad up to first input timestamp
When receiving data from a live upstream element, the first buffer
may have a non-0 timestamp (running time), and the element incorrectly
pushed padding buffers up to that timestamp, resulting in much confusion

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/527>
2021-06-25 23:26:30 +00:00
Mathieu Duponchelle
d6f6f1a777 cea608overlay: expose "black-background" property
As stated in the spec:

> In addition, the user must have the capability to select a black
> background over which the captioned letters are displaced.

The property is MUTABLE_PLAYING
2021-06-18 09:48:44 +00:00
François Laignel
5439f14e57 fix clippy warnings 2021-06-05 10:36:22 +02:00
François Laignel
e16cad7c8f video: migrate to new ClockTime design 2021-06-05 10:36:21 +02:00
François Laignel
8dfc872544 use gst::glib where applicable 2021-06-03 20:53:16 +02:00
Sebastian Dröge
04a60b8f46 Update repository URL for gtk-rs "core" crates 2021-05-13 09:50:08 +03:00
Sebastian Dröge
3d24f1da22 closedcaption/cea608overlay: Fix compilation with cairo API changes 2021-05-04 14:31:58 +03:00
Sebastian Dröge
15cf738616 Update for Value trait refactoring 2021-04-25 15:48:55 +03:00
Mathieu Duponchelle
7923e26545 tttocea608: implement word wrapping in roll-up modes.
In roll-up modes, we open new lines when the last column is reached.
This commit implements lookahead on a word basis, in order to avoid
splitting words unless absolutely necessary (when a word won't fit
on a full row)
2021-04-20 17:53:12 +00:00
François Laignel
67c5871957 fix-getters-calls 0.3.0 pass 2021-04-20 18:19:58 +02:00
François Laignel
27bc5c89ca fix-getters-def 0.3.0 pass 2021-04-20 18:19:58 +02:00
Mathieu Duponchelle
61214b5788 tttocea608: only warn when we do drop characters
In roll-up mode, we drop out of the loop and warn when the 32nd
character is reached, the warning is unnecessary when there were
no characters left to loop on.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/499>
2021-04-16 21:16:46 +02:00
Mathieu Duponchelle
f95b5ee666 closedcaption/caption.c: fix deletion
Trying to write "" in order to erase characters in the caption
frame simply fails silently, the proper way to implement
delete_to_end_of_row and backspace was to memset the relevant
cells.
2021-04-15 14:35:22 +00:00
François Laignel
7d17f88941 post fix-getters manual updates 2021-04-13 17:24:20 +02:00
François Laignel
06accc8d98 fix-getters-{def,calls} pass 2021-04-12 15:57:19 +02:00
Seungha Yang
3dda2aebe9 closedcaption: Fix build with MSVC
Undefined ssize_t is used in eia608.h file as well
2021-04-01 05:13:24 +00:00
Sebastian Dröge
bb8931c39b closedcaption: Don't needlessly create a full-range subslice of a slice 2021-03-25 22:59:14 +02:00
Mathieu Duponchelle
a500166082 cea608overlay: remove debug prints
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/480>
2021-03-17 14:22:00 +01:00
Mathieu Duponchelle
0335893559 closedcaption: implement cea608tojson element
This element outputs the same format expected by tttocea608 in
json mode.

It notably differs from cea608tott in that it only uses libcaption's
low-level API, as it needs to maintain its own view of the current
state of the screen, and make fine-grained decisions as to when
to output data and how to timestamp it.

It covers a large portion of the 608 spec, with the exception of
a few features that probably haven't ever seen widespread usage,
those are listed in a TODO list at the top.

It has been tested with a reference file produced by CEA and covers
all the features it demonstrates.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/480>
2021-03-17 14:22:00 +01:00
Mathieu Duponchelle
11238579a5 tttocea608: pad immediately for the duration of the input buffer
Pushing the pending padding once we receive the following gap
or buffer means we will push it too late otherwise.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/480>
2021-03-12 11:20:44 +01:00
Sebastian Dröge
2cada57efc Update for the subclassing glib/gstreamer bindings API changes 2021-03-09 17:07:13 +02:00
Sebastian Dröge
aa354058f5 Update pretty-assertions to 0.7, async-tungstenite to 0.13 and num-rational to 0.4
Also get rid of the funty workaround as nom now depends on the right
version.
2021-03-09 11:42:33 +02:00
Sebastian Dröge
dc0c5f7611 Update for new #[glib::object_subclass] attribute macro 2021-03-07 18:27:00 +02:00
Mathieu Duponchelle
a7df50e68f ccdetect: fix 608 detection
When cc_type is 00 or 01 the CC is 608 data, the last bit only
denotes the field

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/474>
2021-02-15 19:25:18 +00:00
Mathieu Duponchelle
cc402f769c cea608overlay: support all VideoCaptionType meta
Also expose a field property, to allow selecting CC for a
specific field when the information is available. Defaults
to automatically picking the first field encountered.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/474>
2021-02-15 19:25:18 +00:00
Mathieu Duponchelle
3c982a3de0 ccdetect: extract CDP parser to a separate module
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/474>
2021-02-15 19:25:18 +00:00
Mathieu Duponchelle
19611f0ebe tttocea608: be more conservative when inserting spaces
We don't need to insert a space when starting a new line,
or before punctuation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/474>
2021-02-15 19:25:18 +00:00
Mathieu Duponchelle
20607fe346 tttocea608: expose origin-column and origin-row properties
These can be controlled more precisely using json as the input
format, but exposing them as properties is still useful when
the input format is text.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/474>
2021-02-15 19:25:18 +00:00
Mathieu Duponchelle
126df546c0 tttocea608: make mode property mutable in PLAYING
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/474>
2021-02-15 19:25:18 +00:00
Sebastian Dröge
1cd5d5ef45 Temporarily depend on funty 1.1.0 to work around breakage in 1.2.0
See https://github.com/myrrlyn/funty/issues/3
2021-02-14 11:07:26 +02:00
Sebastian Dröge
b649e9b076 Use gst::PARAM_FLAG_MUTABLE_PLAYING and others consistently everywhere
Fixes https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/issues/139
2021-01-31 15:43:00 +02:00
Sebastian Dröge
1a826caf75 cea608overlay: Handle errors when rendering captions more gracefully
Just don't output anything and log an error instead of panicking.
2021-01-31 11:18:37 +02:00
Sebastian Dröge
d4ce1a33f2 Update for glib/gstreamer bindings API changes 2021-01-25 14:43:05 +02:00
Mathieu Duponchelle
875c3efb91 tttocea608: implement paint-on mode
That mode has been mostly obsoleted by roll-up modes, but let's
include it for completeness' sake.
2021-01-20 02:29:19 +01:00
Mathieu Duponchelle
13efa59252 closedcaption: implement a tttojson element
That new element can for example be used to serialize the output
of awstranscribe, ready for further editing
2021-01-20 02:29:19 +01:00
Mathieu Duponchelle
42b4defb5c tttocea608: in-depth refactoring, support for new input format
Up to now, tttocea608 supported text/utf8, and no interface to
control the positioning of closed captions apart from new lines
in the input text.

CEA 608 supports a larger set of features than that, such as
positioning CC precisely in its 32 x 15 grid, styling text,
switching from one mode to another, resetting the base row
in roll-up mode etc ..

A custom, JSON-based format is now supported by the element
(caps application/x-json, format=cea608), allowing users to
control those features in a pretty advanced manner.

A side effect of this is that the approach previously used
by the element to ensure frame-accurate CC display is now
untenable: where we knew before that an input buffer would
at most span 74 buffers and calculate a somewhat reasonable
latency based on that, this is no longer possible. Instead
we pick the approach most CC encoders seem to pick, and
accept a certain latency at display time: for example the
flipping of the back buffer to the display buffer for a
10-character text buffer will occur 7 frames after its
PTS. This has obvious benefits in terms of code complexity
and should generally be acceptable.

+ Removes a now irrelevant test, updates other tests

+ Extracts the Mode enum to the root of the crate, it will
  be used by another element in a follow-up commit
2021-01-20 02:29:19 +01:00
Mathieu Duponchelle
6267e00c20 libcaption: implement eia608_to_text 2021-01-19 16:40:00 +01:00
Mathieu Duponchelle
a7180e3995 libcaption: fix bit set on indent preambles
style preambles look like:

|P|0|0|1|C|0|ROW| |P|1|N|0|STYLE|U|

and column preambles look like:

|P|0|0|1|C|0|ROW| |P|1|N|1|CURSR|U|

Both preambles go through eia608_row_pramble(), the value they
pass as the x parameter is supposed to hold 4 bits, either
0|STYLE

or 1|CURSR

This value then gets bit-shifted by 1 and or'd in the second byte.

The value is also and' with 0x1E to ensure it can't leak into
the upper bits.

The previous code resulted in x being a 5-bit value, 0x10 (0b10000).
This resulted in outputting a style preamble, as 0x10 << 1 & 0x1E
is 0b00000. When the indent was 0 (the usual case), this went
undetected, but with any other value it resulted in no indent being
applied, but the text getting colored or italicized.

This patch fixes x to have the correct value of 0x8 | indent.
2021-01-19 16:40:00 +01:00
Mathieu Duponchelle
a3dafea688 libcaption: fix parity code calculation
A misplaced parenthesis was causing the odd parity bit to
be set based on an incomplete version of the preamble
2021-01-19 16:40:00 +01:00
Sebastian Dröge
84896e6468 Update to rand 0.8 2021-01-09 12:34:42 +02:00
Guillaume Desmottes
8bc2e5ebb8 use cargo-c to produce cdy and static libs
cargo-c will produce a pkg-config file making it easier to statically
link plugins.

Also add 'static' features for plugins depending on < 1.14 as this is the
minimal required version to use static linking because of ABI changes in
core.
2021-01-04 12:26:45 +01:00
Sebastian Dröge
078bf81b85 sccparse: Work around invalid drop-frame timecodes
Various SCC files have invalid drop frame timecodes.

Every full minute the first two timecodes are skipped, except for every
tenth minute, which means that e.g. "00:01:00;00" is not a valid
timecode and the next valid timecode would be "00:01:00;02".
2020-12-30 13:33:25 +02:00
Sebastian Dröge
3b739530bf sccparse: Parse timecode only once when seeking
Also avoids an unwrap().
2020-12-30 13:04:55 +02:00
Sebastian Dröge
02310d8720 sccparse: Simplify timecode handling a bit 2020-12-30 13:02:09 +02:00
Sebastian Dröge
a88fe95fee mccparse: Use the last known timecode as duration even if there were more invalid ones afterwards 2020-12-30 13:01:41 +02:00
Sebastian Dröge
38ecd43074 Use typed integer literals instead of casting 2020-12-29 17:29:46 +02:00
Sebastian Dröge
005c62425b closedcaption: Update for glib::DateTime API changes 2020-12-24 13:36:07 +02:00
Sebastian Dröge
3d617371af Update for macro renames 2020-12-20 20:43:45 +02:00
Sebastian Dröge
ea6c05e16c Update everything for glib macro renamings 2020-12-18 00:44:49 +02:00