NekoCWD/libcamera
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gstreamer: Add bayer8 support to libcamerasrc element

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Bayer8 support is useful on hardware such as Librem 5, as GStreamer
provides easy solution for debayering and display of the camera
data. Add necessary glue to libcamerasrc element.

Signed-off-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
Pavel Machek 2022-12-23 18:23:12 +01:00 • committed by Laurent Pinchart
parent 21a82ed8a5
commit e83d94915d
2 changed files with 31 additions and 1 deletions
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30
src/gstreamer/gstlibcamera-utils.cpp
View file

@ -20,6 +20,12 @@ static struct {
/* Compressed */
{ GST_VIDEO_FORMAT_ENCODED, formats::MJPEG },
/* Bayer formats, gstreamer only supports 8-bit */
{ GST_VIDEO_FORMAT_ENCODED, formats::SBGGR8 },
{ GST_VIDEO_FORMAT_ENCODED, formats::SGBRG8 },
{ GST_VIDEO_FORMAT_ENCODED, formats::SGRBG8 },
{ GST_VIDEO_FORMAT_ENCODED, formats::SRGGB8 },
/* RGB16 */
{ GST_VIDEO_FORMAT_RGB16, formats::RGB565 },
@ -228,6 +234,22 @@ gst_format_to_pixel_format(GstVideoFormat gst_format)
return PixelFormat{};
}
static const gchar *
bayer_format_to_string(int format)
{
switch (format) {
case formats::SBGGR8:
return "bggr";
case formats::SGBRG8:
return "gbrg";
case formats::SGRBG8:
return "grbg";
case formats::SRGGB8:
return "rggb";
}
return NULL;
}
static GstStructure *
bare_structure_from_format(const PixelFormat &format)
{
@ -243,6 +265,14 @@ bare_structure_from_format(const PixelFormat &format)
switch (format) {
case formats::MJPEG:
return gst_structure_new_empty("image/jpeg");
case formats::SBGGR8:
case formats::SGBRG8:
case formats::SGRBG8:
case formats::SRGGB8:
return gst_structure_new("video/x-bayer", "format", G_TYPE_STRING,
bayer_format_to_string(format), nullptr);
default:
return nullptr;
}

2
src/gstreamer/gstlibcamerasrc.cpp
View file

@ -161,7 +161,7 @@ G_DEFINE_TYPE_WITH_CODE(GstLibcameraSrc, gst_libcamera_src, GST_TYPE_ELEMENT,
GST_DEBUG_CATEGORY_INIT(source_debug, "libcamerasrc", 0,
"libcamera Source"))
#define TEMPLATE_CAPS GST_STATIC_CAPS("video/x-raw; image/jpeg")
#define TEMPLATE_CAPS GST_STATIC_CAPS("video/x-raw; image/jpeg; video/x-bayer")
/* For the simple case, we have a src pad that is always present. */
GstStaticPadTemplate src_template = {