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gst: Implement SPA_META_VideoTransform support

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Many Gstreamer elements support transforming buffers via the
`image-orientation` tag. Use it to implement support for the new
VideoTransform meta.

In order for Gstreamer pipelines to enable support for these tags
usually the rotate method has to be set to `auto` or `automatic`,
e.g. `videoflip method=automatic`, `glimagesink rotate-method=automatic`
or `waylandsink rotate-method=auto`.
This commit is contained in:
Robert Mader 2022-12-03 23:20:52 +01:00
parent fa799aac86
commit 2ed7afb76c
4 changed files with 52 additions and 2 deletions
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2
src/gst/gstpipewirepool.c
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@ -115,6 +115,8 @@ void gst_pipewire_pool_wrap_buffer (GstPipeWirePool *pool, struct pw_buffer *b)
data->crop = spa_buffer_find_meta_data (b->buffer, SPA_META_VideoCrop, sizeof(*data->crop));
if (data->crop)
gst_buffer_add_video_crop_meta(buf);
data->videotransform =
spa_buffer_find_meta_data (b->buffer, SPA_META_VideoTransform, sizeof(*data->videotransform));
gst_mini_object_set_qdata (GST_MINI_OBJECT_CAST (buf),
pool_data_quark,