On 02/06/2018 12:27 PM, Tim Harvey wrote:
From: Hans Verkuil hverkuil@xs4all.nl
Add the v4l2_hdmi_colorimetry() function so we have a single function that determines the colorspace, YCbCr encoding, quantization range and transfer function from the InfoFrame data.
Signed-off-by: Hans Verkuil hans.verkuil@cisco.com Signed-off-by: Tim Harvey tharvey@gateworks.com
drivers/media/v4l2-core/v4l2-dv-timings.c | 141 ++++++++++++++++++++++++++++++ include/media/v4l2-dv-timings.h | 21 +++++ 2 files changed, 162 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-dv-timings.c b/drivers/media/v4l2-core/v4l2-dv-timings.c index 930f9c5..0182d3d 100644 --- a/drivers/media/v4l2-core/v4l2-dv-timings.c +++ b/drivers/media/v4l2-core/v4l2-dv-timings.c @@ -27,6 +27,7 @@ #include <linux/v4l2-dv-timings.h> #include <media/v4l2-dv-timings.h> #include <linux/math64.h> +#include <linux/hdmi.h>
MODULE_AUTHOR("Hans Verkuil"); MODULE_DESCRIPTION("V4L2 DV Timings Helper Functions"); @@ -814,3 +815,143 @@ struct v4l2_fract v4l2_calc_aspect_ratio(u8 hor_landscape, u8 vert_portrait) return aspect; } EXPORT_SYMBOL_GPL(v4l2_calc_aspect_ratio);
+/** v4l2_hdmi_rx_colorimetry - determine HDMI colorimetry information
- based on various InfoFrames.
- @avi - the AVI InfoFrame
- @hdmi - the HDMI Vendor InfoFrame, may be NULL
- @height - the frame height
kernel-doc format for function parameters is like:
* @avi: the AVI InfoFrame
etc.
- Determines the HDMI colorimetry information, i.e. how the HDMI
- pixel color data should be interpreted.
- Note that some of the newer features (DCI-P3, HDR) are not yet
- implemented: the hdmi.h header needs to be updated to the HDMI 2.0
- and CTA-861-G standards.
- */
+struct v4l2_hdmi_colorimetry +v4l2_hdmi_rx_colorimetry(const struct hdmi_avi_infoframe *avi,
const struct hdmi_vendor_infoframe *hdmi,unsigned int height)+{
thanks,