FaSTTUBe/GST-Tensordecoder-ov_ep
37
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

v4l2object: Add support for colorimetry bt2100-pq and 1:4:5:3

Browse Source 
Colorimetry bt2100-pq is a variant of colorspace V4L2_COLORSPACE_BT2020
where the transfer function is SMPTE 2084 which is used by HDR content.

Colorimetry 1:4:5:3 is a full-range variant of colorspace
V4L2_COLORSPACE_470_SYSTEM_BG

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/9166>
This commit is contained in:
Pratik Pachange 2025-06-03 14:25:00 +05:30 committed by GStreamer Marge Bot
parent bc0324f862
commit 1f5dbbbd0b
1 changed files with 59 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

71
subprojects/gst-plugins-good/sys/v4l2/gstv4l2object.c
View File

@ -2598,19 +2598,66 @@ gst_v4l2_object_add_colorspace (GstV4l2Object * v4l2object, GstStructure * s,
else
colorspace = fmt.fmt.pix.colorspace;
if (colorspace == req_cspace) {
if (gst_v4l2_object_get_colorspace (v4l2object, &fmt, &cinfo))
gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
if (colorspace == V4L2_COLORSPACE_REC709) {
/* support for full-range variants of colorspaces V4L2_COLORSPACE_REC709
* (such as Apple's full-range bt709 variant 1:3:5:1) */
struct v4l2_format alt_fmt;
memcpy (&alt_fmt, &fmt, sizeof (alt_fmt));
if (colorspace != req_cspace)
continue;
if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
alt_fmt.fmt.pix_mp.quantization = V4L2_QUANTIZATION_FULL_RANGE;
else
alt_fmt.fmt.pix.quantization = V4L2_QUANTIZATION_FULL_RANGE;
if (gst_v4l2_object_get_colorspace (v4l2object, &fmt, &cinfo))
gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
if (colorspace == V4L2_COLORSPACE_REC709 ||
colorspace == V4L2_COLORSPACE_470_SYSTEM_BG) {
/* support for full-range variants of colorspaces V4L2_COLORSPACE_REC709
* (such as Apple's full-range bt709 variant 1:3:5:1) and colorspace
* V4L2_COLORSPACE_470_SYSTEM_BG */
struct v4l2_format alt_fmt;
enum v4l2_quantization quantization;
memcpy (&alt_fmt, &fmt, sizeof (alt_fmt));
if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
alt_fmt.fmt.pix_mp.quantization = V4L2_QUANTIZATION_FULL_RANGE;
else
alt_fmt.fmt.pix.quantization = V4L2_QUANTIZATION_FULL_RANGE;
if (gst_v4l2_object_try_fmt (v4l2object, &alt_fmt) == 0) {
if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type)) {
colorspace = alt_fmt.fmt.pix_mp.colorspace;
quantization = alt_fmt.fmt.pix_mp.quantization;
} else {
colorspace = alt_fmt.fmt.pix.colorspace;
quantization = alt_fmt.fmt.pix.quantization;
}
if (colorspace != req_cspace
|| quantization != V4L2_QUANTIZATION_FULL_RANGE)
continue;
if (gst_v4l2_object_get_colorspace (v4l2object, &alt_fmt, &cinfo))
gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);
}
}
if (colorspace == V4L2_COLORSPACE_BT2020) {
/* support for colorimetry bt2100-pq, variant of colorspace
* V4L2_COLORSPACE_BT2020 */
struct v4l2_format alt_fmt;
enum v4l2_xfer_func xfer_func;
memcpy (&alt_fmt, &fmt, sizeof (alt_fmt));
if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type))
alt_fmt.fmt.pix_mp.xfer_func = V4L2_XFER_FUNC_SMPTE2084;
else
alt_fmt.fmt.pix.xfer_func = V4L2_XFER_FUNC_SMPTE2084;
if (gst_v4l2_object_try_fmt (v4l2object, &alt_fmt) == 0) {
if (V4L2_TYPE_IS_MULTIPLANAR (v4l2object->type)) {
colorspace = alt_fmt.fmt.pix_mp.colorspace;
xfer_func = alt_fmt.fmt.pix_mp.xfer_func;
} else {
colorspace = alt_fmt.fmt.pix.colorspace;
xfer_func = alt_fmt.fmt.pix.xfer_func;
}
if (colorspace != req_cspace || xfer_func != V4L2_XFER_FUNC_SMPTE2084)
continue;
if (gst_v4l2_object_get_colorspace (v4l2object, &alt_fmt, &cinfo))
gst_v4l2_object_fill_colorimetry_list (&list, &cinfo);