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gstv4l2object: passing HDR10 information

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when playing some codec such as matroska with vp9 codec,
demuxer will save information like video_mastering_display_info
and video_content_light_level in caps that decoder need,
v4l2videodecoder can use it by calling V4L2_CTRL_CLASS_COLORIMETRY
ioctl.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/4403>
This commit is contained in:
HuQian 2023-04-12 08:22:17 +00:00 committed by GStreamer Marge Bot
parent 93e1bc94ae
commit fc7b776387
1 changed files with 93 additions and 0 deletions
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93
subprojects/gst-plugins-good/sys/v4l2/gstv4l2object.c
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@ -4050,6 +4050,99 @@ gst_v4l2_object_set_format_full (GstV4l2Object * v4l2object, GstCaps * caps,
if (format.fmt.pix.pixelformat != pixelformat)
goto invalid_pixelformat;
/* Passing HDR10 information
*
* TODO: should not configure capture of v4l2transform for HDR to HDR conversion.
*/
if (V4L2_TYPE_IS_OUTPUT (v4l2object->type)) {
GstVideoMasteringDisplayInfo video_master_display_info;
GstVideoContentLightLevel video_content_light_level;
struct v4l2_ext_control ext_control[2];
struct v4l2_ctrl_hdr10_mastering_display hdr10_mastering_display;
struct v4l2_ctrl_hdr10_cll_info hdr10_cll_info;
int count = 0;
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "Passing HDR10 medata");
memset (&hdr10_cll_info, 0, sizeof (struct v4l2_ctrl_hdr10_cll_info));
memset (&hdr10_mastering_display,
0, sizeof (struct v4l2_ctrl_hdr10_mastering_display));
if (gst_video_mastering_display_info_from_caps (&video_master_display_info,
caps)) {
GST_DEBUG_OBJECT (v4l2object->dbg_obj,
"video mastering display info: %d:%d:%d:%d:%d:%d:%d:%d:%d:%d",
video_master_display_info.display_primaries[0].x,
video_master_display_info.display_primaries[0].y,
video_master_display_info.display_primaries[1].x,
video_master_display_info.display_primaries[1].y,
video_master_display_info.display_primaries[2].x,
video_master_display_info.display_primaries[2].y,
video_master_display_info.white_point.x,
video_master_display_info.white_point.y,
video_master_display_info.max_display_mastering_luminance,
video_master_display_info.min_display_mastering_luminance);
hdr10_mastering_display.display_primaries_x[2] =
video_master_display_info.display_primaries[0].x;
hdr10_mastering_display.display_primaries_y[2] =
video_master_display_info.display_primaries[0].y;
hdr10_mastering_display.display_primaries_x[0] =
video_master_display_info.display_primaries[1].x;
hdr10_mastering_display.display_primaries_y[0] =
video_master_display_info.display_primaries[1].y;
hdr10_mastering_display.display_primaries_x[1] =
video_master_display_info.display_primaries[2].x;
hdr10_mastering_display.display_primaries_y[1] =
video_master_display_info.display_primaries[2].y;
hdr10_mastering_display.white_point_x =
video_master_display_info.white_point.x;
hdr10_mastering_display.white_point_y =
video_master_display_info.white_point.y;
hdr10_mastering_display.min_display_mastering_luminance =
video_master_display_info.min_display_mastering_luminance;
hdr10_mastering_display.max_display_mastering_luminance =
video_master_display_info.max_display_mastering_luminance;
ext_control[count].id = V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY;
ext_control[count].size =
sizeof (struct v4l2_ctrl_hdr10_mastering_display);
ext_control[count].ptr = &hdr10_mastering_display;
count++;
}
if (gst_video_content_light_level_from_caps (&video_content_light_level,
caps)) {
GST_DEBUG_OBJECT (v4l2object->dbg_obj, "video content light level: %d:%d",
video_content_light_level.max_content_light_level,
video_content_light_level.max_frame_average_light_level);
hdr10_cll_info.max_content_light_level =
video_content_light_level.max_content_light_level;
hdr10_cll_info.max_pic_average_light_level =
video_content_light_level.max_frame_average_light_level;
ext_control[count].id = V4L2_CID_COLORIMETRY_HDR10_CLL_INFO;
ext_control[count].size = sizeof (struct v4l2_ctrl_hdr10_cll_info);
ext_control[count].ptr = &hdr10_cll_info;
count++;
}
if (count != 0) {
struct v4l2_ext_controls ext_controls = {
.ctrl_class = V4L2_CTRL_CLASS_COLORIMETRY,
.count = count,
.controls = ext_control,
};
if (v4l2object->ioctl (fd, VIDIOC_S_EXT_CTRLS, &ext_controls) < 0) {
if (errno != ENOTTY) {
GST_WARNING_OBJECT (v4l2object->dbg_obj,
"Failed to set HDR10 metadata, err: %s", g_strerror (errno));
}
}
}
}
/* Only negotiate size with raw data.
* For some codecs the dimensions are *not* in the bitstream, IIRC VC1
* in ASF mode for example, there is also not reason for a driver to