Commit graph

101 commits

Author SHA1 Message Date
Nicolas Dufresne
e34f765a7e v4l2codecs: Don't unref allocation query caps
The caps obtained from parsing the allocation query is borrowed and
should not be unreffed. This fixes criticals assertion introduced in
1.24.1.

(gst-launch-1.0:242): GStreamer-CRITICAL **: 19:48:02.667:
    gst_mini_object_unref: assertion 'GST_MINI_OBJECT_REFCOUNT_VALUE (mini_object) > 0' failed

Fixes: 5189e8b956 ("v4l2codecs: decoders: Add DMA_DRM caps support")
Closes #3462

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6679>
2024-04-18 06:13:17 +00:00
Nicolas Dufresne
cee05343f0 v4l2codecs: alphadecoder: Explicitly pass 64 bit integers as such through varargs
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6452>
2024-03-27 14:01:45 -04:00
Robert Mader
5189e8b956 v4l2codecs: decoders: Add DMA_DRM caps support
In order to simplify caps negotiations for clients and, notably, be more
compatible with va* decoders.
Crucially this allows clients to know ahead of time whether buffers will
actually be DMABufs.

Similar to GstVaBaseDec we only announce system memory caps if the peer
has ANY caps. Further more, and again like va decoders, we fail in
`decide_allocation()` if DMA_DRM caps are used without VideoMeta.
Apart from buggy peers this can happen e.g. when a peer with ANY caps
is used in combination with caps filters.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5890>
2024-03-14 17:32:13 +00:00
Robert Mader
513d0d8cbb v4l2codecs: decoders: Introduce and use set_output_state helper class
Allowing us to avoid some code duplication. This will become more
important with upcoming changes to caps generation.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5890>
2024-03-14 17:32:13 +00:00
Robert Mader
a95acbcc11 v4l2codecs: decoder: Clean up select_src_format()
Most importantly rely on video info helpers instead of manual parsing
of caps, which will allow us to use additional helpers in the future.

While on it, tighen the check for supported formats - failing that
indicates a bug in caps negotiation - and make some style changes.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5890>
2024-03-14 17:32:13 +00:00
Robert Mader
73b69d8ca0 v4l2codecs: decoder: Generalize size enumeration caps
By reducing the generated caps to the minimal number of fields and
using intersections instead of merges. This will allow us to reuse the
result in the future.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5890>
2024-03-14 17:32:13 +00:00
Robert Mader
65896dab75 v4l2codecs: decoders: Use src template for negotiation filter
This ensures we don't create filter caps that are not supported by the
individual codec implementations, as well as that the resulting caps
have the required fields so they can be turned into a GstVideoFormat.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5890>
2024-03-14 17:32:13 +00:00
Robert Mader
6b024b50ab v4l2codecs: h264: Fix a memory leak on renegotiation
We only use this anchor when streaming, in which case output_state is
set and needs to get unreffed.
This is in line with how it is handled for all other codecs.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/6127>
2024-02-15 22:37:11 +01:00
Robert Mader
a64f2bf628 v4l2codecs: Always chain up to parent decide_allocation function for all codecs
Apply the changes to the codecs previously left out, fixing playback
issues seen with VP9.

See: 70ff80a873 ("v4l2codecs: Always chain up to parent decide_allocation function")
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5896>
2024-01-09 17:29:52 +00:00
Robert Mader
75b7e5fcb3 v4l2codecs/av1decoder: Allow output caps to be updated
To bring AV1 in line - needed for the next commit.

See: d3c5fc815e ("v4l2codecs: Allow output caps to be updated")
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5896>
2024-01-09 17:29:52 +00:00
Marek Vasut
5f3d4215a0 v4l2codecs: Switch gst_codec_picture_ts_ns() to gst_util_uint64_scale_int()
Instead of plain multiplication, use gst_util_uint64_scale_int()
to achieve the same effect with additional checks.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5791>
2023-12-20 18:47:39 +00:00
Marek Vasut
3335af0efe v4l2codecs: Deduplicate picture frame number to timestamp in ns
Add macro which converts picture frame number to suitable timestamp in
nanoseconds for use in V4L2 VB2 buffer lookup. Since multiple codecs do
the same operation and almost all got it wrong, do it in one place so it
can be fixed in one place again, if needed.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5791>
2023-12-20 18:47:39 +00:00
Marek Vasut
552a171671 vp9decoder: Simplify gst_v4l2_codecs_vp9_dec_fill_refs()
In case reference_frames is NULL, return outright. Remove the
duplicate check from subsequent conditionals. No functional change.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5791>
2023-12-20 18:47:39 +00:00
Marek Vasut
4560cdff5c h265decoder: Align wraparound fix
Instead of casting GST_CODEC_PICTURE_FRAME_NUMBER (ref_pic) to u64,
use 1000ULL which is also u64 . This only aligns the behavior here
with '*decoder: Fix multiplication wraparound' commits.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5791>
2023-12-20 18:47:39 +00:00
Marek Vasut
7725aa7d77 h264decoder: Align wraparound fix
Instead of casting GST_CODEC_PICTURE_FRAME_NUMBER (ref_pic) to u64,
use 1000ULL which is also u64 . This only aligns the behavior here
with '*decoder: Fix multiplication wraparound' commits.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5791>
2023-12-20 18:47:39 +00:00
Marek Vasut
3cbf09d0c9 mpeg2decoder: Fix multiplication wraparound
The GstMpeg2Picture system_frame_number is guint32, constant 1000 is guint32,
GstV4l2CodecMpeg2Dec *_ref_ts multiplication result is u64 .

```
u64 result = (u32)((u32)system_frame_number * (u32)1000);
```
behaves the same as
```
u64 result = (u32)(((u32)system_frame_number * (u32)1000) & 0xffffffff);
```

so in case `system_frame_number > 4294967295 / 1000`, the `result` will
wrap around. Since the `result` is really used as a cookie used to look
up V4L2 buffers related to the currently decoded frame, this wraparound
leads to visible corruption during MPEG2 decoding. At 30 FPS this occurs
after cca. 40 hours of playback .

Fix this by changing the 1000 from u32 to u64, i.e.:
```
u64 result = (u64)((u32)system_frame_number * (u64)1000ULL);
```
this way, the wraparound is prevented and the correct cookie is used.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5791>
2023-12-20 18:47:39 +00:00
Marek Vasut
50fb6f8c02 av1decoder: Fix multiplication wraparound
The GstAV1Picture system_frame_number is guint32, constant 1000 is guint32,
GstV4l2CodecAV1Dec v4l2_av1_frame.*_frame_ts multiplication result is u64 .

```
u64 result = (u32)((u32)system_frame_number * (u32)1000);
```
behaves the same as
```
u64 result = (u32)(((u32)system_frame_number * (u32)1000) & 0xffffffff);
```

so in case `system_frame_number > 4294967295 / 1000`, the `result` will
wrap around. Since the `result` is really used as a cookie used to look
up V4L2 buffers related to the currently decoded frame, this wraparound
leads to visible corruption during AV1 decoding. At 30 FPS this occurs
after cca. 40 hours of playback .

Fix this by changing the 1000 from u32 to u64, i.e.:
```
u64 result = (u64)((u32)system_frame_number * (u64)1000ULL);
```
this way, the wraparound is prevented and the correct cookie is used.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5791>
2023-12-20 18:47:39 +00:00
Marek Vasut
6f74818a07 vp9decoder: Fix multiplication wraparound
The GstVp9Picture system_frame_number is guint32, constant 1000 is guint32,
GstV4l2CodecVp9Dec v4l2_vp9_frame.*_frame_ts multiplication result is u64 .

```
u64 result = (u32)((u32)system_frame_number * (u32)1000);
```
behaves the same as
```
u64 result = (u32)(((u32)system_frame_number * (u32)1000) & 0xffffffff);
```

so in case `system_frame_number > 4294967295 / 1000`, the `result` will
wrap around. Since the `result` is really used as a cookie used to look
up V4L2 buffers related to the currently decoded frame, this wraparound
leads to visible corruption during VP9 decoding. At 30 FPS this occurs
after cca. 40 hours of playback .

Fix this by changing the 1000 from u32 to u64, i.e.:
```
u64 result = (u64)((u32)system_frame_number * (u64)1000ULL);
```
this way, the wraparound is prevented and the correct cookie is used.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5791>
2023-12-20 18:47:39 +00:00
Marek Vasut
15c9a6caa9 vp8decoder: Fix multiplication wraparound
The GstVp8Picture system_frame_number is guint32, constant 1000 is guint32,
GstV4l2CodecVp8Dec v4l2_vp8_frame.*_frame_ts multiplication result is u64 .

```
u64 result = (u32)((u32)system_frame_number * (u32)1000);
```
behaves the same as
```
u64 result = (u32)(((u32)system_frame_number * (u32)1000) & 0xffffffff);
```

so in case `system_frame_number > 4294967295 / 1000`, the `result` will
wrap around. Since the `result` is really used as a cookie used to look
up V4L2 buffers related to the currently decoded frame, this wraparound
leads to visible corruption during VP8 decoding. At 30 FPS this occurs
after cca. 40 hours of playback .

Fix this by changing the 1000 from u32 to u64, i.e.:
```
u64 result = (u64)((u32)system_frame_number * (u64)1000ULL);
```
this way, the wraparound is prevented and the correct cookie is used.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5791>
2023-12-20 18:47:39 +00:00
renjun wang
4ff2f07e51 v4l2codecs: av1: Fix typo in debug log message
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5722>
2023-12-06 10:25:24 +00:00
Link Mauve
4cd9dd3940 v4l2codecs: Query the right buffer before expbuf
We were previously always querying index 0, and while the number of planes per
buffer will never change, it seems more proper to query the right buffer rather
than always the first one.

This was found while reading strace logs, and wondering why the
V4L2_BUF_FLAG_MAPPED flag was present on all ¬0 indices even though that
happened before VIDIOC_EXPBUF.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5647>
2023-11-22 15:50:08 +00:00
Marek Vasut
5d2d602e4a v4l2codecs: Avoid QBUF/DQBUF struct timeval .tv_usec wrap-around at frame 1000000
When decoding stream using hardware V4L2 decoder element, in any of the
currently supported formats, the decoding will fail once frame number
1000000 is reached. The reported error clearly indicates a wrap-around
occured, instead of receiving decoded frame 1000000, frame 0 is received
from the hardware V4L2 decoder driver.

The problem is actually not in the driver itself, but rather in gstreamer,
which uses `struct v4l2_buffer` member `.timestamp` in a special way. The
timestamp of buffers with encoded data added to the SINK (input) queue of
the driver is copied by the driver into matching buffers with decoded data
added to the SOURCE (output) queue of the driver. In fact, the timestamp
is not a timestamp at all, but rather in this special case, only part of
it is used as an incrementing frame counter.

The `.timestamp` is of type `struct timeval`, which is defined in
`sys/time.h` [1]. Only the `tv_usec` member of this structure is used
for the incrementing frame counter. However, suseconds_t tv_usec [2]
may be limited to range [-1, 1000000]:
"
[XSI] The type suseconds_t shall be a signed integer type capable of
      storing values at least in the range [-1, 1000000].
"
Therefore, once frame 1000000 is reached, a rollover occurs and decoding
fails.

Fix this by using both `struct timeval` members, `.tv_sec` and `.tv_usec`
with matching modular arithmetic, this way the failure would occur again
just short of 2^84 frames, which should be plenty.

[1] https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_time.h.html
[2] https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/sys_types.h.html

A test case using stateless hardware h264 decoder, the WARN/ERROR output
in gstreamer log indicates a failure occurred. With this change, that
error no longer occurs and the WARN/ERROR are not present:
```
pc$ gst-launch-1.0 videotestsrc num-buffers=1001001 pattern=6 ! \
                   video/x-raw,width=16,height=16,format=I420 ! \
                   x264enc ! filesink location=/tmp/test.h264

dut$ GST_DEBUG="*:3" gst-launch-1.0 filesrc location=/tmp/test.h264 ! \
                                    h264parse ! v4l2slh264dec ! fakesink
...
0:03:51.393677606 12111     0x370df400 WARN      \
  v4l2codecs-decoder gstv4l2decoder.c:1157:gst_v4l2_request_set_done:<v4l2decoder2> \
  Requested frame 1000000, but driver returned frame 0.
0:03:51.394140597 12111     0x370df400 WARN      \
  v4l2codecs-decoder gstv4l2decoder.c:1157:gst_v4l2_request_set_done:<v4l2decoder2> \
  Requested frame 1000001, but driver returned frame 1.
0:03:51.394425216 12111     0x370df400 WARN      \
  v4l2codecs-decoder gstv4l2decoder.c:1157:gst_v4l2_request_set_done:<v4l2decoder2> \
  Requested frame 1000002, but driver returned frame 2.
0:03:51.394665211 12111     0x370df400 WARN      \
  v4l2codecs-decoder gstv4l2decoder.c:1157:gst_v4l2_request_set_done:<v4l2decoder2> \
  Requested frame 1000003, but driver returned frame 3.
0:03:51.394785833 12111     0x370df400 WARN      \
  v4l2codecs-h264dec gstv4l2codech264dec.c:1059:gst_v4l2_codec_h264_dec_output_picture:<v4l2slh264dec0> \
  error: Failed to decode frame 1000000
ERROR: from element /GstPipeline:pipeline0/v4l2slh264dec:v4l2slh264dec0: Failed to decode frame 1000000
```

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5598>
2023-11-04 15:51:45 +01:00
Nicolas Dufresne
41f478e97d v4l2codecs: h265: Fix entry_point_offsets array leak
This array was being leaked.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5499>
2023-10-17 15:06:26 -04:00
Nicolas Dufresne
88fd9908fe v4l2codecs: Fix tiled formats stride conversion
While adding arbitrary tile support, a round up operation was badly
converter. This caused the Y component of the stride to be 0. This
eventually lead to a crash in glupoad preceded by the following
assertion.

  gst_gl_buffer_allocation_params_new: assertion 'alloc_size > 0' failed

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5458>
2023-10-11 14:13:53 +00:00
Seungha Yang
97fc02cfe3 av1decoder: Port to GstCodecPicture struct
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5285>
2023-09-08 11:51:23 +00:00
Seungha Yang
a73c6d7fb6 vp9decoder: Port to GstCodecPicture struct
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5285>
2023-09-08 11:51:23 +00:00
Seungha Yang
4571fac946 vp8decoder: Port to GstCodecPicture struct
... and remove unused "pts" variable from GstVp8Picture struct

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5285>
2023-09-08 11:51:23 +00:00
Seungha Yang
a5ddf7af3b mpeg2decoder: Port to GstCodecPicture struct
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5285>
2023-09-08 11:51:23 +00:00
Seungha Yang
6e7cab43be h265decoder: Port to GstCodecPicture struct
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5285>
2023-09-08 11:51:23 +00:00
Seungha Yang
ea3dfadbed h264decoder: Port to GstCodecPicture struct
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5285>
2023-09-08 11:51:23 +00:00
Nicolas Dufresne
8710911e6b v4l2codecs: Enable Mediatek 10bit 4:2:0 support
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3444>
2023-08-08 16:08:16 +00:00
Daniel Almeida
ec188eb82e v4l2codecs: Add AV1 decoder
This patch adds AV1 stateless v4l2 decode support using the
new v4l2 request API to communicate with hardware accelerators.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1011>
2023-06-16 01:30:40 +00:00
James Cowgill
70ff80a873 v4l2codecs: Always chain up to parent decide_allocation function
The `gst_video_decoder_negotiate_pool` function expects the
`decide_allocation` function to always provide a pool and will fail to
negotiate if the pool is missing. If we return immediately (even if we
don't need to do anything special) negotiation will fail if the
downstream element does not propose a pool.

Fix by chaining up to the default `decide_allocation` function which
adds a fallback pool if one was not already proposed.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4630>
2023-06-15 17:02:28 +00:00
Nicolas Dufresne
0f5d10f617 v4l2codecs: Enable Verisilicon 10bit 4:2:0 support
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3447>
2023-06-15 14:32:32 +00:00
Nicolas Dufresne
aea74db1a2 v4l2: Sync headers to current media_stage
commit d78b9d6671decdaedb539635b1d0a34f8f5934f8

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3447>
2023-06-15 14:32:32 +00:00
Nicolas Dufresne
5f2a664415 v4l2codecs: h265: Set num_delta_pocs_of_ref_rps_idx
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4413>
2023-06-13 14:34:45 +00:00
Nicolas Dufresne
6a7835e106 v4l2codecs: Extend the API with num_delta_pocs_of_ref_rps_idx
This value is an alternative to short_term_ref_pic_set_size and can be used
to parse the RPS portion of a slice header, instead of skipping over it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4413>
2023-06-13 14:34:45 +00:00
Michael Grzeschik
5d82deb2c5 uvcsink: add new bin element around v4l2sink
This patch adds an element to stream video data to an uvc video gadget.
The element handles the uvc events STREAMON, STREAMOFF, SETUP and DATA.
to start, stop and configure the video buffer flow by the use of pad
probes. It works with linux kernels of versions higher than v6.1.

The element makes use of the v4l2sink proxy property v4l2sink::device
to locate the corresponding device to parse the configfs for additional
data.

The code in uvc.c is basically derived from /lib/uvc.c in
https://git.ideasonboard.org/uvc-gadget.git.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1304>
2023-06-01 19:19:05 +00:00
Nicolas Dufresne
e709e2d97c meson: Add a wrap file for libgudev
And allow fallback to it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4447>
2023-04-19 22:47:19 +00:00
Sebastian Dröge
ccad9a7338 plugins: Fix various trivial clang compiler warnings
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4210>
2023-03-18 16:16:55 +02:00
Tim-Philipp Müller
81716a1097 gst-plugins-bad: re-indent with GNU indent 2.2.12
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4182>
2023-03-17 03:18:54 +00:00
Nicolas Dufresne
5980fb76e7 video: Add arbitrary tile dimensions support
In current tile representation, only tiles with power of two
width and height in bytes are supported. This limitation
prevents adding more complex tiles formats.

In this patch, we deprecate tile_ws and tile_hs from GstVideoFormatInfo and
replace if with an array of GstVideoTileInfo. Each plane tiles are then
described with their pixels width/height, line stride and total size.
The helper gst_video_format_info_get_tile_sizes() that depends on the
deprecated API is also being removed. This can simply be removed as it wasn't
in any stable release yet.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3424>
2022-11-18 22:59:29 +00:00
Nicolas Dufresne
d3c5fc815e v4l2codecs: Allow output caps to be updated
This change allow output caps to be updated even though we stay in
streaming state. This is needed so that any upstream updated to fields
like framerate, hdr data, etc. can result in a downstream caps event
being pushed.

Previously, any of these changes was being ignored and the downstream
caps would not reflect it.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3328>
2022-11-16 13:12:38 +00:00
Christopher Obbard
0c83ddcdf7 v4l2codecs: Warn user when no media devices are found
Currently if the user is not able to access the devices under /dev/media*,
either due to no media devices present on the system or simply no permission
to access the device, v4l2codecs initialises with no features or debug messages.

Since calling `GST_DEBUG="v4l2*:7" gst-inspect-1.0 v4l2codecs` is a typical way
to diagnose why element(s) failed to enumerate, we should be more verbose here
when the user is not able to access any /dev/media* device. So print a simple
debug message in this case to aid debugging.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3088>
2022-09-29 19:12:14 +00:00
Thibault Saunier
6a4425e46a meson: Call pkgconfig.generate in the loop where we declare plugins dependencies
Removing some copy pasted code

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/2970>
2022-09-01 21:17:35 +00:00
Nicolas Dufresne
316b182a86 v4l2codecs: h264: Reset the number of slices on picture start
This way, if we aborted a frame in the middle, we don't endup thinking
there is multiple slices to send.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1079>
2022-07-22 10:21:03 -04:00
Nicolas Dufresne
c2144ec586 v4l2codecs: h264: Fix initialization of the slice array
The function g_array_sized_new() leaves the len to 0, but the slice
implementation assumes it would be set to 4. Sending multiple slices is
not yet support for H.264 as no driver needed it yet, but if that code
was to be used it would have overflowed as the array would never grow as
multiple 0 by 2 always results in 0.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1079>
2022-07-22 10:21:03 -04:00
Nicolas Dufresne
a707d984ae v4l2codecs: h264: Rename count variable to num_controls
This is the counter for the used control slot. The term num_controls was
introduced in the HEVC decoder and felt like a better choice.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1079>
2022-07-22 10:21:02 -04:00
Nicolas Dufresne
a2b219c7e1 v4l2codecs: hevc: Add an API check
This adds an API check and bump recommended base kernel version to 5.20.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1079>
2022-07-22 10:21:02 -04:00
Benjamin Gaignard
0eb7028570 v4l2codecs: Add v4l2 stateless H265 decoder
Add v4l2 stateless H265 decoder.

Co-authored-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Co-authored-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1079>
2022-07-22 10:21:02 -04:00